Note: Descriptions are shown in the official language in which they were submitted.
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This invention relates to the field of archery, more particularly to a method of winding
bow strings such as to enhance the flight characteristics of arrows. ~ ~ ~
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While the physical embodiment of the bow and arrow has undergone dramatic changes
over the centuries, the essence of the weapon remains that of a stick and string. The energy
created in the fle~ng limbs of the bow is imparted, upon release, to the string and thence to the ~ ~
arrow. ~ ~,
Not surprisingly, much in~entive engenuity has been applied to the development of ~ `
designsandmethodswherebytheenergy transfer to the arrowisrenderedmore efflcient, thus ~ ;
producing faster and straighter arrow llight paths.
The use of the bow and arrow, with the exception of hunting, is generally confined to
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; competitn~e sports such ~as target shooting. As with most competitive sporting events, partici-
pants are engaged in the, seemingly, never ending search for ways to improve their ;
performance. Whether by technique or by technology the difference between a winning
performance and a losing performance is usually so slight as to be undetectable without the use
of sensitive measuring devices.
Thus any competitive advantage, no matter how seemingly small, assumes significant -
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proportions when placed in the arena of competitive sports; and the sport of archery is no ~; ,
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exception . ~ I . ' " ' ' , "S
Inventions abound in this field - as may be readily attested to by a purusal of the patent
20 literature - yet the bow string itself has remained relatively unaltered for a decade or more.
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Surprising when one considers the critical role played by the string.
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The method of windingbowstrings of the present invention results in a stringwhich is
more dense than that of the known art, has greater wear characteristics, greater dimensional
accuracy and imparts significantly more energy to the arrow.
According to one aspectthepresent invention relates to a methodofwindingbow
strings comprising the steps of:
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Winding bow string material under tension to form a multi-strand, generally c*cular ~ ,
loop having a diameter substantially equal to the length of a standardized bow string; :
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forming a first serving at a tie-off end of said loop by inserting a first single string strand
10 transverselythrough a first strand bundle of said loop, maintaining one end of said first string
strand inlongitudinal contactwith said first strand bundle, lapping the other end of saidfirst
strand over and around said first strand bundle to form a first series of laps extending
longitudinally for a predetermined length of said first strand bundle, pulling said other end
of saidfirst stringstrand back underandthroughsaidfirst laps, exposing saidfirst string strand
$~theoutside of saidfirst laps at the p73 approximate mid-point ofthelength of saidfirstlaps -
and cutting said other end of said first string strand whereby said first string strand is
assimilated into said first laps;
forming a second serving at a second strand bundle of said loop 180 degrees from said
first serving by inserting a second single string strand transversely through said second strand
20 bundle of said loop, maintaining one end of said second string strand in longitudinal contact
with said second strandbundle, lapping the other end of said second strand over and around
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said second strand bundle to -form a second series o-f laps extending longitudinally for a length
of said second strand bundle substantially equal to the length of said first strand bundle laps,
pul]ing said other end of said second string strand back under and through said secondlaps,
exposing said second string strand to the outside of said second laps at the approximate mid-
point of the length of said second laps and cutting said other end of said second string strand
whereby said second string strand is assimilated into said second laps;
stretching said loop whereby said first and said second servings form a first and second
end loop 180 degrees opposed, attaching said first end loop to a f~xed anchor, attaching said
second end loop to a rotating means and rotating said loop under tensionwhereby the
lo multiplestrandsofsaidloop are tightly intertwined;
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forming a third sen~ing commencing at the point where the opposite ends of said first -
serving meet in said first end loop, overlapping said ends of said first serving and extending ~ :
longitudinally for a predetermined length of the tightly intertwined strands by inserting a third ~ ::
single string strand transversely through the intertwined strands, maintaining one end of said :
third string strand in longitudinal contactwith said intertwined strands, lapping the other end
of said third strand over and around said intertwined strands to form a third series of laps, . .
pulling said other end of said third string strand back under and through said third laps, exposing
said third string strand to the outside of said third laps at the approximate mid-point of the
length of said third laps and cutting said other end of said third string strand whereby said :~
20 third string strand is assimilated into said third laps;
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~orming a forth serving commencing at the point where the opposite ends of said second ~ .`
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servingmeetinsaidsecond end loop,overlapping said ends of saidsecond serving and '~,'!j`'''~'
extendir;g longitudinally for a length substantially equal to the length of said third laps by ` -: -
inserting a forth single string strand transversely through the intertwined strands, maintaining ;
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one end of said forth string strand in longitudinal contactwith said intertwined strands, lapping ~ ~;
the other end of said forth strand over and around said intertwined strands to form a forth
series of laps, pulling saidotherendofsaidforthstring strand backunder andthroughsaid
forth laps, exposing said forth string strand to the outside of said forth laps at the approximate ~`;
mid- point of the length of said forth laps and cutting said other end of said forth string strand ~ -
.......
whereby said forth string strand is assimilated into said forth laps; ~
forming a fifth serving substantially centrally located on the length of said interwined ~ ;
strands and extending along said intertwined strands for a predetermined length by inserting
a fifth single string strand transversely through the intertwined strands, maintaining one
10 endof saidfifth string strand in longitudinal contactwith said intertwinedstrands, lapping the
other end of said fifth strand over and around said intertwined strands to form a fifth series of
laps, pulling said other end of said fifth string strand bark under and through said fifth laps,
exposing said fifth string strand to the outside of said fifth laps at the approximate mid-point
ofthelengthof said fifthlaps and cutting saidotherendofsaid fifth string strandwhereby
said fifth string strand is assimilated into said fifth laps; and
rela~ing tension.
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Themethodofthepresentinventionwillbedescribedingreaterdetailhavingreference ;~:
to the drawing figures wherein; ~ .
Figure 1 is a schematic view of the initial wlnding process.
20 Figu~e LA isaschematicviewofthe initial winding processshowingthe applicationofthefirst
serving.
Iiigures 2 to 2C show the method by which the various servings are applied. ~ -
Figure 3. illustrates the dual end loops formed from the intitial servings. ~
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~igure 4 shows the method by which the string is braided.
Figure S illustrateis the positioning of additional end loop servings.
Fijgure 6 illustrates a completed string showing the relative positioning of the various servings.
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Conventional bow string material 10, such as Dacron, is fed from a string roll 8 under
tension applied by pinch rollers 9 to a winding device 14 comprised of two diametrically
opposed and longitudinally adjustable semi-circular members to form a multi-strand, generally ~ ~ -
circular loop 12 having a diameter substantially equal to the length of a standardized bow string;
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A first serving 16is formed at the tie-off end of the loop 12by inserting a sinjgle string ~;-
strand 16'transverselythrough a strand bundle of the loop 12,maintaining one end of the
lo strand 16' in longitudinal contact with the strand bundle, lapping the other end of the strand
16' over and around the strand hundle to form a series of laps 16 extending longitudinally for
a predetermined length L(approximutely 1.5 inches) of the strandbundle,pullingthe other
end of the strand 16' buck under and through the laps 16, exposing the strand 16' to the outside
of the laps 16 ut thei approximate mid-point of the length of the laps 16 and cutting the strand ,~
16' such thae the strand 16' is flush with and forms a part of the laps 16; -
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A second serving 16" at a second strand bundle of the loop 12 is formed 180 degrees ~ ~
from the first serving 16 by repeating the process described above in respect to the forrnation -~ `
of the first serving 16 and extends for a length substantially equal to that of the first serving 16. ~ ;
The loop 12isstretched such thatth~e firstand said second servings 16 and l6"
2 o respectivelyformafirstand second endloop 18and 1~'respectively, 180degreesopposed.The
secondendloop 18' is attached toafixedanchoræwhich is slidablyadjustableinthe ~`
horizontal plane by means of an adjustment bed 24 affixed to a support structure 26 and the first
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end loop 18is attached to the shaft of an elctric mo~or 20. The loop 12 is tensioned by adjusting , -
the anchor 22, and the loop 12 rotated such that the multiple strands of the loop 12 are tightly
intertwined or braided. ~;
A third serving 28is formed by the method described herein in respect to the formation
of the first serving 16 commencing at the point where the opposite ends of the first serving 16
meet in the first end loop 18, overlapping the ends of the first serving 16 and extending
longitudinally for a predetermined length of the tightly intertwined strands (approximately 3
hlches). ~;
A foIth serving ~8' is formed by the method described herein in respect to the formation
lo of the first serving 16 commencing at the point where the opposite ends of the second serving
16" meet in the second end loop 18', o~verlapping the ends of the second serving 16" and ~ ~
extending longitudinally for substantially the same length as the third serving 28. - --
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A fifth serving 30isformedbythemethod describedherein in respect tothe formationofthefirsSserving 16 substantiallycentrallylocated uponthebodyoftheloop 12and extending
for approximately 6 inches along its length. ~
~ Tension on the completedstringisreleased by reversing theadjustmentonthe anchor - ~;
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An object of the method of the present invention is to provide a finished string more
accurately dimensioned than that of the known art. Another object is to provide a string
20 wherein each individual strand is tensioned substantially equally thus reducing the tendency
to individual strand breakage inherent to the strings of the known art. A further object is to ~ -
proYide a more dense bow string that those currently available thus imparting greater speed ~;
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to the arrow's flight.
It should be clear that the above description is intended merely to disclose the prently
preferred embodiment of the method of the present invention and should not be construed as
limiting the scope of the invention. According the scope of the present invention should be
os determined by the appended claims and their legal equivalents.
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