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Publication numberUS1877273 A
Publication typeGrant
Publication dateSep 13, 1932
Filing dateOct 28, 1927
Priority dateOct 28, 1927
Publication numberUS 1877273 A, US 1877273A, US-A-1877273, US1877273 A, US1877273A
InventorsCowdery Robert H
Original AssigneeAmerican Fork & Hoe Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1877273 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Patented Sept. 13, 1932 ,PATENT" .o1-Fica Bonner n. coWDEn-Y, or GENEVA, omo, AssrGNoR Torna AMERICAN FORK COMPANY, or CLEVELAND, oHIo, A CORPORATION oF oHIo i & HOE


' ap*punitionV medvo'ctaierfzs, 1927.. seraiNo. 229,297.

My invention relates to bows and relates to bows adapted for use in the art fof archery. From prehistoric times the bow and arrow has been commonly known and as a weapon was made by prehistoric man from reed, and wood materials and in more recent times, bows yhave been commonlymade of yew`,`al though in oriental countries, bows have Abeen and are still commonly made of bamboo.

Although bowsv of metallic "material vhave from time to time been proposed for use, the use has not as yetattained any considerable degree ot success, since if the properties of vresiliency are sufficiently secured the bow will yield, since commonlythese bows are of undue weight or the diii'erent portions ofthe bow are improperly proportioned as' to ilexure and weight; also difficulty has been had from breakage of metallic and 'other bows.

An object of'my invention, therefore, is to provide a bow so constructed as'to possess the property `of p resiliency distributed throughout the differentpar'ts ofl the bow in such a manner as to' achieve the best results as,` to length or flight of the'arrow projected from Jghe bow and to secure accuracy of direction of tnother object of my invention is to provide a bow havingits resilientr portions so formed 'as to eliminate the danger of breakage of these portions` when theI bow is drawn, at the same time permitting the iiexure of vthese portions in such a way as toaccomplish the desired properties of flight, distance and accuracy to an unusually high degree.

Another object of my inventionl is to accomplish the production ofa bow which, may

be readilydisassembled into ltwo separate y parts during periods of non-use. A

Another object of'my invention is to produce a bow which willnot 'be subject to warping, in which the amountof yield of the various portions can be, during the manufacturing processof such bows in quantities, accurately predetermined, and to provide a bow which is relatively non-tiring, so that little attention need be given to the unstringing of the bow immediately 'after each use of the same; and so that the bow will always be ready for use having the same preliminary forni prior to Stringing, or expressed inv another way, whlchwlll exert the' same amount i -of tension upon the cord when strung.

Another object of my invention is to provide a novel method of making bows ofv steel apphcable to the efficient production of bows possessing uniform qualities, linlarge quantities. f r

Other objects of my invention andthe invention itself willbecome apparent by reference to the following description of Ya preferred embodiment ot" my invention, illustrated in theacconipanying drawing, Wherein:

Fig.` 1 is'an elevational view ot a strung bow so constructed as to embody the principles of my invention; 4

Fig. 2l is 'asimilar view enlarged ofthe bottoni end portion of the bow oit Fig. '1i

Fig. 3 is a view partly in longitudinal medial sect-ion of `a part ot the handle or paradox figures; y

Figlt is anend view ot. the paradox as viewedV from either end" with the. limbs of the bow removed therefrom; y f

F igs.` 5 to 12, inclusive,` are transverse vsections ta'lien on the lines 5-'-5, (L46, `of Fig.

portion'of 'the bowof the foregoing 11-11 and 12--l2, respectively, ais/indicated in Figi;

` Fig. 13 `is an enlarged view of one of the Fig. 14 is a section taken on tlie'line 14--14 of Fig. 3;

Fig. 15 illustrates an isometric View a fragment of the bow limbs receivingthe sleeve shown at 3 in Fig. 3, telcscoped within the paradox which receives the oppositely extendinglimbs of the Ybow;` and Fig. 16 is an isometric View ofthe ltube forming the supporting body of the paradox.


Referring now to the-different figures of drawing, in all of which where like reference characters occur they refer tothe saine parts7 comprising 'v to their tips, the tip for the limb 2 being shown at 5, each of thel limbs terminate at their tips in bow-string supporting` hooks 6.

At 7, I show a bow paradox tubular body a metallic. tube, supporting at an intermediate portion, a handle sleeve 8, at its end caps 9; on its interior the tube 7 supports a tubular sleeve 15 telescoped within it and formed substantially alike in all transverse sections, as indicated inFig. 14

of substantially hollow T-shape. VThe sleeve 15 is wedged tightly in place in telescoped position within the tube 7 by a pair of strips 18 and 19 of wood or other material adaptable for the purpose of being tightly driven between the inner walls of the tube 7 and the opposing walls 20-21 and 22-23 of' the tubular sleeve. Each of the wood strips 18 and 1,9 are so formed in `transverse sections that when driven into the spaces as indicated in Fig. 14, between the tubular sleeve 15 and the inner walls of the tube 7, the sleeve 15 will be tightly wedged in place within the tube 7 and in its wall 24. which is substantially of the form of a segment of a cylinder pressed tightly into intimate engagement with the inner walls of the tube.

I preferablyA make the sleeve 15 from a cylindrical tube by pinching and pressing inwardly lateral portions of' one side of the tube to form` the portion which is substantially V-shaped in cross-section, shown at 25,

leaving the wall 24 to partake of' its original cylindrical form and the radius of curvature I preferably make slightly less than the radius of curvature ofthe inner walls of the tube 7, so as to permit a slight yielding of the Wall 24- when the wood wedging strips 18 and .19 are driven home, whereby intimate engagement of the lengaging cylindrical walls of the telescoped tubes will be had, as illustrated in Fig. 14. Having. tightly wedged the bow and receiving tube 15 of substantially hollow T-shaped section, as illustrated in Figs. 14 and 15, into the paradox tubular body 7, I then tightly press the end caps 9 over the ends ofthe tube 7. The caps 9 each contain a slot approximately T-shaped as indicated in Fig. 4 at 10. L.These slots are so formed as to be capable of alignment with the passage of similar crosssectional forms provided through the tubular sleeve 15 whereby the properly formed Shanks 4 of the bow ends may beV projected through the aligned slots 10 in the caps and into the interior of the tubulary sleeve 15, as shown I refer to the limbs 1 and 2 herein asbeing of approximately T-shaped sectional form, tapered from shank to tip and preferandV i tips.

ably with a reversely tapered shank, but preferably these limbs comprise an arcuate belly 11 having a conversely rounded outer surface and a concave back provide-d with a rib 12 extending rearwardly along the back from its longitudinal middle concave surface. This formation of bow limb effects the production of a metallic spring giving exceedingly good results used as a bow limb. The provision of arcuate back yand an integral longitudinalv rib extending medially f along its concave side accomplishes a reenforced spring construction receiving slight flexing efforts` and wherein the yield in the various portions is very readily predetermined by variations inl the dimensions of the rib 'and the width of the arcuatebelly as substantially illustrated in Figs. 5 to 12,'in-y elusive. The reenforcing rib 12 decreases in the amount of its projection from the concave surface of the bow limb towards the tipi and adjacent the tip, as illustrated in Figs. 9, 10 and11., is so reduced as to permit greater flexure of these tipl portions and terminates in the nocks or hooks 6 suitably formed as shown to receive the end loops 13 of the bow string-14. Y c y A hand grip is providedin the form of an annular sleeve 26 telescoped over the tubular paradox body 7 and kept in place in the position best indicated inFig. 1 by flanged collars 27 and 28 which are soldered or otherwise secured inplace on theexterior of the tube 7 in compressive contact with the, grip. The Shanks-4 of the two bow limbs extend into oppositeends lof the paradox through the slots l1() and into opposite ends of the tubular sleeve 15, and in order to accomplish a very tight fit of the limbs within the paradox, I preferably make the shank portions 4 tapered in cross-sectional shape in all transverse directions, and the relative transverse dimensions of the limb shanks and the passage way within the sleeve 15 are made so that a gradually tighter and tighter fit is had by the shanks within the tubular sleeve and whereby the s hanks when forced to their in-most` positions within the sleeve will be very tightly gripped by the slightly resilient metallic walls of the sleeve, compressed inwardly by the wedging woodpacking strips 18 and 19.

I find that it is often desirable to form the limbs ofthe bow in portions approaching the tip with the belly made gradually more and more of flattened form so as to gradually increase the flexibility of lthe tipv portions to secure the beneficial effect of flexure 'ofl Although both of the bow limbs may be made capable of removal, I sometimes refer to so tightl wedge one of the limbs, fbr instance the imb 2, within the tubular sleeve 15, thatl any ordinary ull will not remove this limb of lthe bow rom the paradox or handle. This may be done in a number of ways, but a ready way to accomplish this is to interpose a thin sheet of acking material intermediate the shank 4 of t e limb 2 and the inner walls of the sleeve 15, so as to make a much tighter engagement, as is the case between the limb 1 and the sleevel.

A. bow constructed as described I find can v be made in quantities of uniforml good quality and without any reasonable hability of its being broken in use. The outer metallic surfaces of the bow comprising surfaces of the limbs and the 'tubular paradox may be suitably coated or oxidized so as to prevent rusting of the limbs.

Having thus described my invention I am aware that numerousA and extensive departures may be made from the invention herein illustrated and described but without departing from the spirit'of my invention.`

' I claim:

1. A bow for archery comprising a pair of' oppositely-extended bow limbs and an intermediately'disposed handle joining the Shanks of said limbs, said limbs each provided with an integrally formed reenforcing rib on its back side, extending longitudinally thereof, said rib being progressively tapered from the handle towards the tip of the limb.

2. A bow for archery comprising a pair of I y oppositely-extended bow limbs and an intermedi ately disposed handle joining the Shanks of said limbs, said limbs being of substantially T-formfinapproximately all transverse sections, the stem portion of saidsections constituting va longitudinal extending reinforcing rib for the back of the limb, the divergently extending arm portions 'of said sections together making a substantially U shaped belly for the bow limb, from the intermediate concave face of which the rib extends.

3. A bow `for archery comprising a pair of oppositely-extended bow limbs and an intermediately disposed handle joiningthe Shanks of said limbs, said limbs ,each provided with an integrallyformed reenforcing rib on its back side, extending longitudinally thereof,

, said `rib being progressively tapered from the handle towards the tip of the limb, and a bow-string supporting horn integrally formed with said rib, projected there longitudinally from the tip end thereof.

In testimony whereof- I hereunto aliix my signature this 14 day of October, 1927.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2617402 *Mar 21, 1950Nov 11, 1952Roemer Benjamin CString mounted bow deflector
US2664079 *Jan 19, 1949Dec 29, 1953Lake Harry FMetal archer's bow
US4669445 *Apr 16, 1984Jun 2, 1987Grand Slam Archery, Ltd.Archery bow limb
US5099819 *Oct 2, 1989Mar 31, 1992Bear Archery Inc.Compound bow having tubular risers
US6067974 *Mar 4, 1999May 30, 2000Islas; John J.Compound bow
US6105564 *Apr 23, 1998Aug 22, 2000Suppan; HerbertBow with limbs
US6932071 *Dec 30, 2003Aug 23, 2005Sop Services, Inc.Method for manufacturing ribbed archery bow limb portions and the ribbed archery bow limb portions produced thereby
US7311096 *Oct 21, 2004Dec 25, 2007Bear Archery, Inc.Method for manufacturing ribbed archery bow limb portions and the ribbed archery bow limb portions produced thereby
US20050139199 *Dec 30, 2003Jun 30, 2005Gallops Henry M.Jr.Method for manufacturing ribbed archery bow limb portions and the ribbed archery bow limb portions produced thereby
US20050139200 *Oct 21, 2004Jun 30, 2005Gallops Henry M.Jr.Method for manufacturing ribbed archery bow limb portions and the ribbed archery bow limb portions produced thereby
US20110253120 *Oct 20, 2011Colin William RobertsonArchery recurve bow limb
U.S. Classification124/23.1
International ClassificationF41B5/00
Cooperative ClassificationF41B5/0026
European ClassificationF41B5/00A4