Note: Descriptions are shown in the official language in which they were submitted.
TITLE
[0001] Banjomatic: A Drywall Taping Tool For Applying Mud-Coated Tape to the
Joint Spaces of
Drywall.
FIELD OF THE INVENTION
[0002] There is a need for a drywall taping tool that is affordable to the
individual taper that can be
easily manipulated for the purpose of covering the joint spaces of abutting
boards of drywall with
mud-coated tape efficiently.
BACKGROUND OF THE INVENTION
[0003] It is well known in the construction industry the material used to
construct interior walls and
ceilings is known as drywall, gypsum board, sheet rock, wallboard and the like
depending on the
manufacture the product is purchased from. For the purpose of simplicity, the
same product will be
described as drywall within this description. Drywall typically comes in 4' X
8' boards. These boards
are installed by professionals well known in the construction industry as
Boarders. When the
installation of drywall takes place the 4' X 8' boards are typically screwed
onto, either a wooden or
steel, framework of wall studs and ceiling joists with drywall screws. Smaller
pieces are cut to
facilitate completely covering the framework of the wall studs and ceiling
joists to form the interior
walls and ceilings within a residential or commercial building. The spaces
between the abutting
boards of drywall is well known in the construction industry as a joint space.
It is then, a professional
well known in the construction industry as a Taper, will come in to apply an
adhesive compound,
well known in the construction industry as mud, over the joint space, then
apply a strip of paper, well
known in the construction industry as tape to cover the joint spaces to
eventually form a smooth wall
surface.
[0004] The process of forming a smooth wall surface is a multi-step process in
itself. Step one is
for the taper to apply a coat of the mud, then the tape or the mud-coated tape
to cover the joint space
of abutting boards of drywall. The second step is for the taper to use a putty
knife to thinly secure the
mud-coated tape to the joint space of the abutting boards of drywall. The
third step is for the taper to
allow the mud-coated tape to dry. The fourth step is for the taper to manually
apply a thin coat of mud
1
CA 2999659 2018-03-29
over the dried mud-coated tape. The fifth step is to let the fourth step dry
completely. The sixth step
is to repeat the fourth step. The seventh step is to repeat the fifth step.
The eighth step is to lightly
sand the dried mud-coated joint spaces of abutting boards of drywall to form a
smooth wall surface.
[0005]
It is well known in the construction industry there are four methods for the
taper to
accomplish step one, covering the joint spaces of abutting boards of drywall
with mud, then tape or
with mud-coated tape. These methods are: by a multi-step manual process of
applying the mud to the
joint space, then manually applying the tape over the mud-coated joint space;
by using a Mud Box to
manually coat a strip of tape for the taper to apply the strip of mud-coated
tape to the joint space; by
using a multi-piece apparatus known as a Bazooka, this apparatus is designed
to apply mud onto the
tape and continuously apply mud-coated tape to the joint spaces or by using a
single-piece apparatus
known as a Banjo, this apparatus is designed to apply mud onto the tape and
continuously apply mud-
coated tape over the joint space.
[0006] Today process of covering the joint space of abutting boards of drywall
is still primarily
preformed manually in the same multi-step, time consuming, labor intensive
process. Using this first
method, a taper accomplishes covering the joint spaces of abutting boards of
drywall by applying
mud to the joint space using a hawk, a specialized tool used to hold a pile of
mud on top of, in one
hand and a putty knife in the other. The taper loads his putty knife with some
mud off the hawk and
spreads the mud over the joint space. Then, he must put down his hawk, tear
off a strip of tape to
place on top of the mud-covered joint space. Then, use his putty knife to
apply enough pressure to
over the piece of tape, without stretching the tape, tearing the taping or
moving the tape off the joint
space while simultaneously removing any air bubbles behind the tape before the
mud begins to dry
to form a smooth surface between the abutting boards of drywall. Then,
repeating this process on all
the inside joint spaces within the building.
[0007] The second method for tapers to accomplish covering the joint spaces of
abutting boards of
drywall is by using a Mud Box. The Mud Box, such as CA patent number 2316427-
Sweeny 2001,
US patent number 8286681-Goldman 2012, and US patent number 8435377-Greenhalga
in 2013, are
among the most recent examples of prior art for the Mud Box. The Mud Box is
well known in the
construction industry. The purpose of a Mud Box is to coat tape with mud for
the purpose of manually
applying the mud-coated tape to the joint space of abutting boards of drywall.
Once the tape is
threaded through the first slot of the Mud Box, the tape enters the container
and is then threaded out
2
CA 2999659 2018-03-29
the second slot. The Mud Box is filled with mud. The taper pulls the tape that
is exposed out the
second slot, until the tape comes out of the Mud Box coated with mud. The
taper then pulls out the
desired length of mud- coated tape, cuts the desired length free from the Mud
Box, then manually
applies it over the joint space. The taper, then uses his putty knife to apply
enough pressure to over
the piece of tape, without stretching the tape, tearing the taping or moving
the tape off the joint space
while simultaneously removing any air bubbles behind the tape before the mud
begins to dry to form
a smooth surface between the abutting boards of drywall. Then, repeating this
process on all the inside
joint spaces within the building. While the Mud Box eliminates the first step
of the taper having to
coat the joint space with mud manually, then applying tape over the mud coated
joint space, this
process still remains multi-step, still time consuming and labor intensive.
[0008] The third method of for tapers to accomplish covering the joint space
of abutting boards of
drywall is by using an apparatus, well known in the construction industry as
the Bazooka. In 1939,
brothers' Robert and Stan Ames developed a newer method for finishing drywall
in Georgia, USA.
They called their invention the Corner Shoe. The Corner Shoe, was the first
invention in a long line
of apparatuses to come designed to continuously cover the joint spaces of
abutting boards of drywall
with mud-coated tape by way of air pressure and a long hose. The Ames Brothers
eventually
developed their Corner Shoe idea into the invention well known in the
construction industry today as,
The Combined Tape and Mastic Applicator in U.S. Patent number 2502499, 1950-
Ames, aka the
Bazooka.
[0009] This first drywall taping apparatus provided for the feeding mud by way
of air pressure to a
nozzle which applies a layer of mud to the tape and provides mechanisms for
tape cutting and creasing
the mud-coated tape into the inside joint space. This taping apparatus was
battery powered and
weighed more than one-hundred ponds when fully loaded. Robert Ames continues
improvement of
his Bazooka with the development of the Self-Contained Dry Wall Taper, U.S.
Patent number
4086121, 1978-Ames. This invention provides for an improvement over U.S.
Patent number
2815142, 1957-Ames whereas the spring-based tape advancing pin has been
changed to one that will
not drag on the tape to the tape on its return movement and will have no
tendency to move the tape
in a reverse direction in the tape guide. Ames also provides a novel means to
take up the slack the
tape cutting blade server experiences via normal wear and tear. While Ames
continues to improve his
original design, problems persist that negatively affect the maintenance
costs, ease of operation, work
effectiveness, and taping quality. Notably, a main drawback in the Ames design
resides in the cable
3
CA 2999659 2018-03-29
arrangement between the piston and the drive wheel resulting in the operator
having to exert increased
effort to continue the taping operation. If the taper allows any slippage of
the drive wheels to occur
on the drywall board it will leave a dry spot on the tape, which is
unacceptable. Additionally, U.S.
Patent number 4086121, 1978-Ames, wherefore in this design the cable
arrangement, which resides
between the piston and the drive wheels, is prone to twisting and/or wind up
over itself causing the
rate of delivery of mud to the head (nozzle) to be intermittent rather than
uniform. Nor is there a
mechanism that allows for control of the quantity of mud applied to the tape.
Additionally, it is well
known for the cable to break altogether, thereby causing productivity to cease
until repairs are
completed. Lastly, in order to activate and deactivate the corner creaser
mechanism, the taper has to
let go of his normal grip to grasp comer creaser lever.
[0010] Taping Tool having Improved Tape Advance, U.S. Patent number
9359777,2016- Jungklaus
et al. (aka AXIA Acquisition Corporation, a subsidiary of Ames Holdings),
addresses the problem in
the prior art U.S. Patent number 4086121, 1978-Ames. In the design of the Ames
Bazooka, a piston
is mounted within the elongated hollow tube (mud reservoir) and moves in
unison with the tape-
engaging drive wheels via a connection by a cable. As the taper moves the
Bazooka forward on the
tape-engaging wheel the compound dispensing front head (nozzle) applies mud
simultaneously to
tape and mud as the taper moves forward over the joint space. This Taping Tool
having Improved
Tape Advance, within claims what is described as "a simplified tape
advance/actuation assembly"
The tape advance/actuation assembly has a control member that forms part of
the elongated body and
functions in unison with the tape engagement member that is house in the tools
head (front). The tape
engagement member provides for engagement or disengagement of tape, through
the manipulation of
a single fastener, depending on the position and/or direction of movement of
the control member.
Thus, improving upon the action of tape advancement for the taper running this
taping tool. In
addition, the corner creaser can now be activated without the taper having to
move his hand from the
normal grip position.
[0011] The Ames team is making progress with improving the short-comings of
their original
design, as well as other inventors as found in the prior art of U.S. Patent
number 6513562, 2003-
Trout. Trout's design focuses improvement of the head of the Ames design.
Trout calls his invention,
Drywall Taping Tool. The prior art of the Ames design shows the head (nozzle)
of the Bazooka is
comprised of multiple metallic components, precision machined parts, assembled
together with
screws. Over time, the pressurized mud and normal wear and tear of the Bazooka
weaken the overall
4
CA 2999659 2018-03-29
effectiveness of the screws to maintain uninterrupted use for the taper. With
prolonged use of the
Bazooka, these screws often become loosened, especially along the side walls
and mud can leak in
this area. It is known for taper to attempt to plug-up these spaces with a
silicon sealant, or attempt
adjustments of these screws to minimize the leakage. Trout's solution for the
improvement of the
Ames design of the multi-component head (nozzle) is to provide the Bazooka
apparatus a unitary
nozzle (head). The unitary nozzle features a cradle section adjacent a tube
receiving section and a
flange for sealing receiving a mastic tube. A mastic (mud) is extruded and
contained along a path
extending along one side of the tape and between a front and rear end of the
nozzle. This invention
addresses the problem of the leakage of mud into the undesired sections and
out of the nozzle (head)
of the previously patented Ames Bazooka.
[0012] The above referenced prior art of the apparatus well known in the
industry as the Bazooka
are a multi-component system the Taper must put together each day. At the
beginning of the day the
Taper affixes a one end of a component called the goose neck to the rear of
the Bazooka and the other
end of the goose neck is affixed to a pump. The pump is placed into a bucket
of mud. Then the taper
grabs the handle on the pump and by moving the handle in and up and down
motion the mud is pushed
through the goose neck into the rear of the Bazooka thereby filling up the mud
reservoir. Once the
reservoir is full, the taper disconnects the goose neck from the rear of the
Bazooka, prepares for the
application mud-coated tape to the joint space of the abutting boards of
drywall. When the mud
reservoir is empty, the taper must stop to reattach the goose neck to the rear
of the Bazooka, repeat
the pumping process to refill the mud reservoir, and disconnects the goose
neck from the rear of the
Bazooka to continue applying mud-coated tape to the joint space. It is well
known in the construction
industry the Bazooka is prone to breakdowns, as previously noted. These
breakdowns are costly in
terms of the cost of new parts and the unproductive time. Lastly, due to the
multi-component system,
the lengthy time it take to clean at the end of each day diminishes the tapers
daily productivity.
[0013] In the next example of prior art the Pneumatic Drywall Taper-2009, U.S.
Patent number
7628295 Mondloch et al. The Mondloch et al. claims to provide a system for
permitting substantially
continuous flow of drywall compound (mud) to be delivered to wallboard
(drywall), while having
improved control over the rate of drywall compound (mud) that is delivered to
the tape. Thus,
eliminating the need to continually refilling the mud reservoir of the Bazooka
with a goose neck/pump
system. Mondloch et al, design provides for a delivery system for a continuous
flow of drywall
compound (mud) to the wallboard joint (drywall joint) utilizing a delivery
tube that is connected to
CA 2999659 2018-03-29
the drywall compound (mud) supply assembly, the delivery tube has a second end
that communicates
with the drywall pressure sensitive dispensing head, the flow rate is
controlled by a valve
arrangement. The valve arrangement includes a pinch valve having a flexible
diaphragm for
controlling the flow of pressurized drywall compound (mud). This design also
provides for a tape
advancing mechanism, a tape severing device and a creaser wheel assembly.
While improvements to Ames original design make the Bazooka slightly easier to
use the overall
functionality remains cumbersome due to its multi-part design. Whether using
the Bazooka, with the
goose neck and the pump design or the improved continuous flow design of
Mondloch et al. design,
for the application of mud-coated tape to the joint space of drywall, the
overall design of the Bazooka
is very large, heavy and cumbersome and all-day use is difficult. Each day
time must be taken to
assemble, fix problems that arise and clean-up is time consuming as well due
to the multi-component
=
design. Thus, diminishes the actual daily productivity of the Taper. In
addition, the Bazooka is very
expensive to purchase and additional down-time can be expected due to repair
issues as noted.
Therefore, some Tapers have opted for a less expensive apparatus well known in
the industry as the
Banjo for the application of mud-coated tape to the abutting joint space of
drywall.
[0014] The fourth method of for tapers to accomplish covering the joint space
of abutting boards of
drywall is by using an apparatus, well known in the construction industry as a
Banjo. The Banjo is
well known in the construction industry used for the application of applying
mud-coated tape to the
joint space of abutting boards of drywall. The design of a typical Banjo
consists of an area in the rear
of the machine that holds a roll of tape on a spool, the tape is threaded
through a rear tape slot into
the mud reservoir, along the top of the reservoir, out the front tape slot,
through the front guide rollers
and over the front guide wheels. The door to the mud reservoir is opened,
filled with mud and the
door is latched closed. The taper then pulls the tape forward from the front
tape slot until the tape
comes out the front tape slot coated with mud. The taper pulls forward enough
mud-coated tape to
cover over the front guide wheels. Then the taper presses the Banjo onto the
joint space of the drywall
to be covered, moves in a forward direction to the end of the joint space
being covered. In less
sophisticated Banjo models, the taper would than get ahold of his putty knife
to cut the tape from the
machine, while simultaneously holding the Banjo against the end of the joint
space. The more
sophisticated models have a mechanism can be slid, pulled or squeezed,
depending on the design of
that model, to activate a cutting blade that will cut the tape free the joint
space being covered with the
Banjo by the Taper. These models, typically have a corner creaser that can be
activated by the taper
to "tuck" the mud-coated tape onto the inside joint spaces of abutting sheets
of drywall.
6
CA 2999659 2018-03-29
[0015] In 1880, Prior art U.S. Patent number 225860 by R.R. Patterson, titled
Automatic Paper
hanger claims, "it will be observed that the feeding, trimming, pasting, and
fixing to the wall are
performed mechanically by one machine," was novel for its time. In 1943, Prior
art U.S. Patent
number 2328571 by Merle Meyer, as well as in 1958, Prior art U.S. Patent
number 2858953 by G.
W. Harrell both used Paterson's design as inspiration for their own
inventions' of what is well known
in the industry as the Banjo. In 1963, U.S. Patent number 3116195 was granted
to Lathrop et al. This
prior art, while technically a Bazooka, demonstrates a slide action mechanism
similar to Moree's slide
action handle he incorporated into his Banjo's design.
[0016] In 1975, Billy Moree was granted U.S. Patent number 3880701 for his
invention he called,
Apparatus for Applying Tape. Moree describes his invention's design as, "An
elongated frame
includes a tape roll mounting means, a mastic mud reservoir through which the
tape passes, wiper
means, and application rollers for pressing tape into place. Tape holding
mechanism and tape cutting
means are individually actuated by a slide actuator." Moree's Banjo allows the
taper to apply mud-
coated tape to the drywall joint space, a cutting mechanism to cut the tape
away from the machine,
and a corner creaser to "tuck" the mud-coated tape into the inside joint
space. Like the Ames design
of the Bazooka, Moree's design sets the standard of a typical modern design of
what is well known
in the industry today as the Banjo. U.S. Patent number 4003781 to Holsten in
1977, U.S. Patent
number 4196028 to Mill et al. in 1980, and U.S Patent number 4452663 to Heaton
in 1984 provide
examples of prior art relating to the present invention. Holsten's invention
provides for a pivotally
mounted tape cutter assembly that he considers solves the problem of the tape
cutter being too closely
adjacent to the cement (mud) container in Moree's design, thereby solving the
issue of the leading
tape needing to be extracted and restnmg over the front guide wheels after
each cut. Holsten's design
claims for more continuous taping after each cut. Mill et al. also notes the
issue of Moree's design of
the tape cutter being too close to the dispensing chamber outlet at the main
rollers, "the taper must
manually advance and restring about the main rollers after each cut." Mills et
al. focus was for
providing for a taping tool, "...that will enable the operator to accurately
cut the tape at the end of the
wallboard section and begin taping a new section without having to manually
restring the freshly cut
tape about the rollers." Additionally, the invention of Mill et al. claims
their corner roller "squares"
the tape into the corners of the inside corners and ceiling joints rather than
merely creasing the tape
into the said corner joint space. Heaton's invention, while does not provide
for an automatic cutting
mechanism, it does provide a breaking mechanism that when activated, "The
application of the brake
7
CA 2999659 2018-03-29
holds the tape so that it may be maintained in tension as a knife is used to
cut the tape below the
roller." The taper then utilizes his putty knife to cut the mud-coated tape
free from the Banjo. The
inventors goal of the above referenced prior art of Moree, Holsten, Mill et
al. and Heaton provide
example of design modifications of what is well known in the industry as the
Banjo to facilitate ease
of the application of applying mud-coated tape to the joint space of abutting
boards of drywall. These
modifications have yet to be inclusive on one tool. This invention is
considered to be a Banjo within
the construction industry.
[0017] In taking into account the design features and design shortcomings of
the prior art currently
on the market for the Banjo tool, I have designed and constructed a drywall
taping tool that includes
the features to facilitate ease of use by the taper. This invention provides:
an ergonomic, durable
lightweight, balanced design, easy set-up, a mud flow control mechanism, an
automatic fallback
preventer mechanism, an automatic tape cutter mechanism, an automatic corner
creaser mechanism,
an extended rear handle, a comfort grip, a grip handle, a T-base, tethered
hitch pin, four key-hole
slots, a hook, a stationary knife and easy to clean at the end of the day. I
call this invention the
Banjomatic.
SUMMARY OF THE INVENTION
[0018] This invention, the Banjomatic, was invented by a taper for tapers for
the use of applying
mud-coated tape to the joint space of abutting boards of drywall. It is the
goal of this invention to
provide a Banjo, for ease of use for the taper that is ergonomic, durable
light-weight, and has a
balanced design for all day use. This invention provides for: easy set-up;
provides a mud flow control
mechanism to regulate the quantity of mud that is applied onto the tape that
is applied to abutting
joint space of drywall; provides an automatic fallback preventer mechanism to
prevent the mud-
coated tape from retracting backward after activating the tape cutting
mechanism that cuts the mud-
coated tape at the end of the joint space being covered; and provides an
automatic corner creasing
mechanism that tucks and embeds the mud-coated tape into the inside corner
joint space of abutting
boards of drywall. The Banjomatic also provides: an extended rear handle
designed, for the average
height taper to reach eight-foot ceilings without the use of stilts or
scaffolding equipment; a comfort
grip on the rear handle; a T-base design that allows for the drywall taping
tool to be put on a level
surface without falling over; a hitch pin, used to secure the tape housing
spool, that is tethered to the
Banjomatic preventing loss of the hitch pin; a rubberized grasp handle for
extra grip; the tape guide
8
CA 2999659 2018-03-29
assembly wheels are chamfered to provide extra grip during the application of
the mud-coated tape
to the joint space of abutting boards of drywall; and has four key-hole slots
and a hook that can be
used to hang the Banjomatic on a drywall screw or scaffolding to free up both
hands while working.
The Banjomatic provides stationary knife allowing for the taper to pull out
and cut small strips of
mud-coated tape for application to the smaller joint space of abutting boards
of drywall. The
Banjomatic provides for quick and easy clean up at the end of the day.
In the drawings, which form part of this specification
[0019] FIG. 1. Is the Left Side View of the Banjomatic, an apparatus for
applying mud-coated tape
to the joint spaces of abutting boards of drywall.
[0020] FIG 2. Is the Right Side View of the Banjomatic, an apparatus for
applying mud-coated tape
to the joint spaces of abutting boards of drywall.
[0021] FIG. 3A. Is the Bottom View of the Banjomatic, an apparatus for
applying mud-coated tape
to the joint spaces of abutting boards of drywall.
[0022] FIG. 3B. Is the Close-Up Bottom View of the Banjomatic, an apparatus
for applying mud-
coated tape to the joint spaces of butting boards of drywall.
[0023] FIG. 4A. Is the Top View of the Banjomatic, an apparatus for applying
mud-coated tape to
the joint spaces of hutting boards of drywall.
[0024] FIG. 4B. Is the Close-Up Top View of the Banjomatic, an apparatus for
applying mud-
coated tape to the joint spaces of abutting boards of drywall.
DETAILED DESCRIPTION OF THE INVENTION
[0025] The Banjomatic, a drywall finishing tool, as seen in FIGS. 1, 2, 3A and
4A, comprises of a
rear handle 1, which is attached to the T-base 5_ On the rear handle 1 is a
grip 3 that is secured by a
9
CA 2999659 2018-03-29
ring 2. The ring 2 is secured to the rear handle 1 via a set screw 2A. The T-
base 5 is attached to the
left housing assembly panel 7A and right tape housing assembly panel 7B.
[0026] The tape housing assembly is comprised of parts: as seen in FIGS. 1,2,
3A and 4A, the left
tape housing assembly panel 7A, the right tape housing assembly panel 7B, the
tape housing assembly
cable to tether spool 8, tape housing assembly rear tether cable crimp sleeve
8A, tape housing
assembly front tether cable crimp sleeve 813, tape housing assembly ring pin
9, tape housing assembly
hitch pin 10 and tape housing assembly spool 11. One end of the tape housing
assembly cable to
tether the spool 8 is looped and the loop is secured by the tape housing
assembly rear tether cable
crimp sleeve 8A and that loop is riveted into the precut hole on the rear of
the left tape housing
assembly panel 7A and the other end of the tape housing assembly cable to
tether the spool is looped
around the tape housing assembly pin ring 9 and secured by the tape housing
assembly front tether
cable crimp sleeve 8B. The tape housing assembly pin ring 9 is inserted into
the tape housing
assembly hitch pin 10. The tape assembly hitch pin 10 in slid into the precut
hole in the middle of the
left tape housing assembly panel 7A through the precut hole in the center of
the tape housing assembly
spool 11 and through the precut hole in the center of the right tape housing
assembly panel 7B. The
left tape housing panel 7A is attached to the left mud reservoir side panel
12A. The right tape housing
panel 7B is attached to the right mud reservoir side panel 12B via welds.
[0027] The mud reservoir is comprised of parts: as seen in FIGS. 1, 2 and 3A,
left mud reservoir
side panel 12A, right mud reservoir side panel 12B, top mud reservoir panel
17, bottom mud reservoir
panel 21, mud reservoir door 13, piano hinge 14, mud reservoir door latch 15
and mud reservoir hinge
16. The mud reservoir door 13, is attached to the left mud reservoir side
panel 12A via a piano hinge
14. The mud flow control mechanism control plate 44C is attached to the front
end of the bottom mud
reservoir panel 21 by lining up of the precut holes and secured by rivets. The
tape tensioner 42 is
riveted into the precut holes of the bottom mud reservoir panel 21. The bottom
mud reservoir panel
21, and he top mud reservoir panel 17, is attached left mud reservoir side
panel 12A and the right
mud reservoir side panel 12B to comprise the mud reservoir and secured via
welds. Once the mud
reservoir is affixed together the length of the bottom mud reservoir panel 21
allows for the rear tape
slot 46 and the front tape slot 47. A spring wire mud reservoir door latch 15,
is connected to the hinge
16, the hinge 16, is welded the right mud reservoir panel 12B.
CA 2999659 2018-03-29
[0028] The grip handle is comprised of parts: as seen in FIGS. 1,2, 3A and 4A,
the front grip handle
base 18A, the rear grip handle base 188, the left grip bar 19A and the right
grip bar 19B. The left grip
bar 19A and the right grip bar 19B are inserted onto pre-cut holes in the
front grip handle base 18A
and the rear grip handle base 18B, then the bases are attached to the top mud
reservoir panel 17. The
hook 20, is attached to the front of the front grip handle base 188 and to the
top mud reservoir panel
17 via welds.
[0029] The corner creaser mechanism is comprised of two assemblies: as seen in
FIGS. 1, 2, 4A
and 4B. The corner creaser handle assembly and a comer creaser wheel assembly
that is connected
together by the corner creaser mechanism cable and corner creaser mechanism
spring to form the
corner creaser mechanism_ The comer creaser handle assembly is comprised of
parts: corner creaser
handle assembly base 43, corner creaser handle assembly guide rod 22, corner
creaser handle
assembly handle 23 and the corner creaser handle assembly rubberized grasp
handle 24. The corner
creaser handle assembly rubberized grasp handle 24, is attached to the corner
creaser handle assembly
base 43, which is attached to the top mud reservoir panel 17 via a weld. The
corner creaser handle
assembly handle 23 is slid horizontally through the pre-cut slot on the corner
creaser handle assembly
base 43. The corner creaser handle assembly guide rod 22 is inserted into the
pre-cut hole within
comer creaser handle assembly rubberized grasp handle 24, and through the pre-
cut hole in the corner
creaser handle assembly handle 23 and stopping at the end of the pre-cut hole
in the corner creaser
handle assembly base 43. The corner creaser handle assembly guide rod 22 is
then secured into place
by a set screw 24A in the corner creaser handle assembly rubberized grasp
handle 24. The corner
creaser mechanism cable 25 is connected to the comer creaser handle assembly
handle 23, and is
secured to the corner creaser handle assembly base 43 by the rear corner
creaser mechanism cable
clip 27B, the cable is thread through the pre-cut holes in rear left corner
creaser mechanism cable hole
26B located on the left side of the rear grip handle base 18B and through the
front left corner creaser
mechanism cable hole 26A located on the left side of the front grip handle
base 18A, then is secured
to the front portion of the left mud reservoir side panel 12A with the front
corner creaser mechanism
cable clip 27A, and attaches to the comer creaser assembly/tape guide wheel
assembly shaft 28 and
secured to the shaft by the front corner creaser cable mechanism crimp sleeve
25A.
[0030] The corner creaser wheel assembly is comprised of parts: as seen in
FIGS. 1 and 2, the left
corner creaser wheel assembly arm 29A, the right corner creaser wheel assembly
arm 29B that have
precut holes on both ends of the arni, the corner creaser wheel assembly wheel
30 and the corner
11
CA 2999659 2018-03-29
creaser wheel assembly wheel connecter bolt 31. Place the left corner creaser
wheel assembly arm
29A against the one side of the corner creaser wheel assembly wheel 30 and the
right corner creaser
wheel assembly arm 29B against the other side of the corner creaser wheel
assembly wheel 30,
matching the precut holes in the corner creaser wheel assembly arms 29A and
29B to the precut hole
on the center of the corner creaser wheel assembly wheel 30, then slide the
corner creaser wheel
assembly wheel connector bolt 31 starting from the left, slide through exiting
the right side and secure
the corner creaser wheel assembly connecting bolt 31 in place.
[0031] The guide wheel assembly is comprised of parts: as seen in FIGS. 1,2,
4A and 4B, the left
tape guide hub 34A with a precut hole on the rim for insertion of a set screw,
the left tape guide wheel
with a chamfered outside edge 33A, the center tape guide hub 34C, the right
tape guide wheel with a
chamfered outside edge 33B, right tape guide hub 34B with a precut hole on the
rim for insertion of
a set screw.
[0032] The corner creaser wheel assembly and the guide wheel assembly is
attached to the
Banjomatic by placing the center precut hole of the left corner creaser wheel
assembly arm 29A,
against the left tape guide assembly hub 34A, then place the Left tape guide
assembly wheel with a
chamfered outside edge 33A against the opposite side of left tape guide
assembly hub 34A, then
placing the center tape guide assembly hub 34C against the left tape guide
assembly wheel with a
chamfered outside edge 33A, then placing the right tape guide assembly wheel
with a chamfered
outside edge 33B against the opposite side center tape guide assembly hub 34C,
then place the right
tape guide assembly hub 34B against the right tape guide assembly wheel with a
chamfered outside
edge 33B, then place right corner creaser assembly arm 29B against the right
tape guide assembly
hub 34B, all the while lining up to all the center precut holes in parts 29A,
34A, 33A, 34C, 33B, 34C,
29B, then while holding those seven parts in alinement place the corner
creaser assembly/tape guide
wheel assembly parts between front of left mud reservoir side panel 12A and
right mud reservoir side
panel 12B, then take corner creaser assembly/ tape guide wheel assembly shaft
28 and slide it through
the front precut hole on the left mud reservoir panel 12A, through the center
hole on parts 29A, 34A,
33A, 34C, 33B, 34C, 29B, through front precut hole on right mud reservoir
panel 12B. Parts 29A,
34A, 33A, 34C, 33B, 34C, 29B are secured to the corner creaser assembly/ tape
guide wheel assembly
shaft 28, by placing set screws into the precut hole on the rim of the left
tape guide assembly hub 34A
and the right tape guide assembly hub 34B thereby, securing the corner creaser
assembly and the tape
guide wheel assembly to the Banjomatie.
12
CA 2999659 2018-03-29
[0033] The mud flow control mechanism is comprised of parts: as seen in FIGS.
1, 3A and 3B, mud
flow control mechanism square shaft 44A, mud flow control mechanism thumb
screw 448 and the
mud flow control mechanism control plate 44C. The mud flow control mechanism
thumb screw is
attached to the mud flow control mechanism square shaft 41A by screwing it
into a precut threaded
hole on the mud flow control mechanism square shaft 41A. The mud flow control
mechanism square
shaft 41A is secured into the pre-cut square hole located on the left mud
reservoir side panel 12A and
the right mud reservoir side panel 12B via welds. The mud flow control
mechanism thumb screw 44B
makes contact on the mud flow control mechanism plate 44C. By tightening the
thumb screw 44B,
the screw applies pressure to the mud flow control mechanism plate 44C, which
decreases the amount
of mud flowing onto the drywall tape. Inversely, =tightening the mud flow
control thumb screw 4411
decreases the pressure to the mud flow control mechanism plate 44C which
increases the amount of
mud flowing onto the drywall tape.
[0034] The fallback preventer mechanism is comprised of parts: as seen in
FIGS. 3A and 3B, the
fallback preventer shaft 41A, the fallback preventer pin 418 and the fallback
preventer spring 41C.
The fallback preventer mechanism shaft inserted 41A into the precut holes on
the front top area of
left mud reservoir panel 12A and the right mud reservoir panel 12B. The
fallback preventer
mechanism pin 41B is inserted into the precut hole on the fallback preventer
mechanism shaft 41A.
The fallback preventer mechanism spring is attached to the fallback mechanism
shaft 41A and secured
to the right mud reservoir panel 12B.
[0035] The tape cutting mechanism is comprised of parts: as seen in FIGS. 3A
and 313, the lever 4,
tape cutting mechanism cable 6, tape cutting mechanism cable housing 6A, tape
cutting mechanism
cable clip 6B, tape cutting mechanism cable crimp sleeve 6C, tape cutting
mechanism blade 35, tape
cutting mechanism housing 36, tape cutting mechanism shaft 37A, tape cutting
mechanism eye bolt
37B, tape cutting mechanism spring 37C, tape cutting mechanism ejector pin 38.
The tape cutting
mechanism cable 6 is threaded though the tape cutting mechanism cable housing
6A. The lever 4 is
secured onto the rear handle 1. The ferruled end tape cutting mechanism
housing covered cable 6/6A
is inserted into the lever 4, the tape cutting mechanism housing covered cable
6/6A is secured to the
rear of the right tape housing panel 7B by a tape cutting mechanism cable clip
6B, the tape cutting
mechanism housing covered cable 6/6A continues through pre-cut holes rear
right tape cutting
mechanism cable hole 26D located on the right side of the rear grip handle
base 18B and front right
13
CA 2999659 2018-03-29
tape cutting mechanism cable hole 26C located on the right side of the front
grip handle base 18A,
and then is secured, via stringing the tape cutting mechanism housing covered
cable 6/6A through the
precut hole the tape cutting mechanism shaft 37A and securing the tape cutting
mechanism cable 6
with a tape cutting mechanism cable crimp sleeve 6C. The tape cutting
mechanism shaft 37A is then
inserted into the precut holes on the left mud reservoir panel side panel 12A
and right side reservoir
panel 1213, then the tape cutting mechanism eye bolt 37B is screwed into the
tape cutting mechanism
shaft 37A and secures it into place. Then the tape mechanism spring 37C is
attached to the tape
mechanism eye bolt 37B and secured to the precut hole on the left mud
reservoir side panel 12A.The
tape cutting mechanism blade 35 is inserted into the tape cutting mechanism
housing 36, then is
inserted to the front bottom area, lining up to the precut holes between the
left mud reservoir side
panel 12A and the right mud reservoir side panel 1213 and securing the tape
cutting mechanism blade
35 and tape cutting mechanism housing 36 with screws. The tape cutting
mechanism ejector pin 38
inserted through the precut slot of the tape cutter mechanism blade 35 and the
tape cutter mechanism
housing 36 and screws into the precut threaded hole on the tape cutting
mechanism shaft 37A.
[0036] The stationary knife 40, as seen in FIGS. 2, 4A and 4B, is attached to
the stationary knife
housing 39 by rivets, then is welded between the front top angled area of left
mud reservoir side panel
12A and the right mud reservoir side panel 12B.
14
CA 2999659 2018-03-29
