Note: Descriptions are shown in the official language in which they were submitted.
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This invention relates to door shoes, and more
particularly, relates to door shoes for securement to the
bottom and top of glass doors.
Door shoes for supporting latching and locking
hardware at the base or the top of glass doors having no
vertical reinforcing components such as stiles are well known.
Conventional door shoes are formed from a single U-shaped
extrusion or comprise a pair of opposed members which are
joined together by means of recessed screws or the
like securing means to grip the bottom and top edges of the
glass doors. Gasket material such as silicone plastic
is applied to the contacting surfaces between the glass
and shoe component necessitating a fairly lengthy curing
period after application before the doors can be transported
and installed. Assembly of the shoes with application of
the gasket material usually has to be carried out by skilled
or semi-skilled tradesmen under optimum working conditions
such as provided in a shop.
The door shoe of the present invention is a mechani-
cally simple apparatus which permits facile installation of
the shoes on the glass doors at the building site by relatively
unskilled workmen. A lengthy time for curing of plastic gasket
material is not required and the user can select his own source
of glass door panels for the installation with significant
savings in costs. It is therefore a principal object of
the present invention to provide a simple door shoe apparatus
which permits installation of door shoes on glass door
panels by relatively unskilled workmen.
It is another object of the present invention to
provide a door shoe apparatus which is positive and reliable
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in operation and which will accommodate variances in glass
panel thickness.
The door shoe of my invention for securement
to an edge of a glass panel comprises, broadly, a pair of
elongated mating members having opposed faces defining a
recesss therebetween for receiving said glass panel edge,
said mating members having interlocking means for securing
said members together whereby lateral separation of said
members is prevented and the width of the recess can be varied
for entry and positive engagement of the glass edge therein,
said interlocking means comprising a longitudinal rib
terminating in an elongated cylindrical bulbous portion
extending inwardly from one of said members, and an internal
elongated cylindrical cavity adapted to receive the
cylindrical bulbous portion of the said rib formed in the
other member, for pivotal movement of the mating components
relative to each other about the bulbous portion; and closure
means formed in opposed surfaces of said members to the side
of the elongated rib remote from the opposed faces defining
the recess for biasing the said opposed faces together. The
elongated cylindrical bulbous portion of the rib and the
elongated cylindrical cavity have longiLudinal axes which
are substantially coaxial with each other when assembled
together, said common axis being located on the central
plan of the door shoe. The closure means preferably
comprise aligned recesses formed in opposed surfaces of the
two members and a pin or tube adapted to be inserted into
said recesses to urge the opposed surfaces apart to pivot
the opposed faces of the recess towards each other.
These and other objects of my invention, and the
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manner in which they can. be attained, will become apparent
from the following detailed description of the following
drawings in which:
Figure 1 is a perspective view of a door shoe
of the present invention in its assembled
form;
Figure 2 is a sectional view taken along line 2-2
of Figure 1 indicating the pivotal action
of the said door shoe for ease of
installation;
Figure 3 is a perspective view of an end closure
member adapted to be secured to each end
of a door stop; and
Figure 4 is an end view of the closure member shown
in Figure 3.
The door shoe 10 of the present invention comprises
a pair of opposed interlocking elongated, mating components
12,14 adapted to be secured together to frictionally engage
a glass panel 16 indicated by ghost lines in Figure 1.
Mating door shoe components 12,14 preferably are
formed by extrusion of aluminum or magnesium alloys. Components
12,14 have exterior planar faces 20,22 respectively
terminating at faces 24,26 usually perpendicular thereto.
Component 12 has an elongated rib 28 extending inwardly perpen-
dicular to inner face 30 in proximity to but preferably closer
to end face 24 than the edge 32 of thin~wall section 34 for
reasons which will become apparent as the description proceeds.
Rib 28 terminates in an elongated cylindrical bulbous portion
40 with the centre of bulbous portion 40 located substantially
on the central longitudinal plane 42 of the door shoe when
assembled, as illustrated in Figures 1 or 2.
Component 14 has an upset portion 44 with an elongated
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slot 46 formed therein with an internal cylindrical cavity 48
adapted to receive cylindrical bulbous edge portion 40
of rib 28 by longitudinal axial insertion of rib 28 within
- recess 40 such that lateral separation of component 12
from component 14 is prevented. The sides 50,52 of slot
46 diverge outwardly away from each other from cylindrical
cavity 46 to permit component 12 to pivot about the central
axis of bulbous portion 48 up to an angle ~ of about 10
from the plane 42 to permit pivotal movement of component
20 relative to component 22 as indicated by the ghost
lines of Figure 2.
The upper face 56 of upset portion 44 is planar and
extends transversely of the space defined between opposing walls
58,60 of components 12,14, respectively which together define
longitudinal slot 59 for receiving the marginal edge 62 of
glass panel 16. Each of faces 58,60 preferably is covered
with a thin layer 61 of a resilient material such as a
cork-plastic composition to permit compression and to enhance
frictional and sealing engagement between the opposed faces
of the door shoe and glass panel 16.
Component 12 has an elongated arcuate recess 70
extending along its inner face preferably in proximity to
outer face 20 on the side of rib 28 remote from face 58.
Recess 70 is in alignment with arcuate recess 74 formed
along the edge of upset portion 76 formed on the inner
face of component 22 to define cylindrical cavity 72.
In operation, door shoe 10 is placed over the marginal
edge 62 of glass panel 16 such that the edge of the panel abuts
face 52 of upset portion 44 of component 14 while component 12
is pivoted to its open position, as shown by the ghost lines in
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Figure 2. A cylindrical pin or tube, such as a steel pin 80,
is i~serted into cylindrical cavity 72 forcing the edges
32,84 of components 12,14 away from each other and
biasing upper opposed faces 58,60 towards each other about
the axis of bulbous portion 40 to the configuration shown
by solid lines in Figure 2 thereby securely gripping the
marginal edge 62 of glass panel 16 therebetween. The
diameter of pin 72 must be sufficient to cause faces 58,60
into tight fitting frictional engagement with marginal
panel edge 62 by compression of gasket material 61.
Figures 3 and 4 illustrate a closure plate adapted
to be frictionally secured to each end of door shoe 10.
Closure plate 90 comprises an extrusion of aluminum or
magnesium alloy or of a rigid plastics material having an
elongated convex outer surface 92 and a planar inner surface
94 adapted to span the width of the door shoe between outer
faces 20,22. An upstanding longitudinal rib 96 perpendicular
to the plane of surface 94 is adapted to be inserted into
kerf 98 formed at each end of door shoe 10, upstanding rib
96 having small protuberances 100 formed thereon to assure
strong frictional engagement within kerf 98. A portion
of rib 96 is extended as indicated by numeral 102 beyond
the depth of kerf 98 for reception within cavity 104 such
that closure plate 90 cannot move in a vertical direction
once installed in place. Longitudinal rib projection 106
extending from face 94 is spaced from the edge 110 of plate
90 a distance equal to the thickness of wall 32 such that
rib 106 engages the inner surface 112 of wall 34 when
closure plate 90 is secured to the door shoe.
It will be understood that modifications can
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be made in the embodiment of the invention illustrated and
described herein without departing from the scope and
purview of the invention as defined by the appended claims.
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