US1445822A - Wedge - Google Patents

Description

E. W. BULLARD WEDGE Fi led Apr. 20, 1922 new andusetul Improyement' in edges;

nnwrnwa BULLAnn, onwHrrnnY- vrrinn, connncrrcur.

Patented Feb. 2 h i923.

sra'ie Wear it I tantra WEDGE.

Application mama so, 1922. SerielNo. 555,785.

To all whom it may concern:

Be it known that l, EDWIN JV. BULLARD, a citizen of the United States, residing at VVhitneyville, in the county ct New Haven and State of Connecticut, have invented a and I do hereby declare the 'lollowing, when taken in. connection.,with the accompanying drawings andthe characters of reference marked thereon, to be a full, clear and or act description or the same, and whichsaid drawings constitute part ot this application, and represent in- Fig. 1 a View in side elevation of an ordi nary claw-hammer, the head oi? which 1S secured to the tenon of its wood handle by one.

'liormof my improved i nperforate seli'docting wedge shown bybrokenlines.

Fig.2 a View thereof in broken horizontal section on theline 22 of Fig. 1, the parts being shownon an enlarged scale. h Fig. 3 a detached plan 'view of the seli":- locking wedge.

Fig. 4 a face View thereof.

Fig. 5 an edge iew thereof. Fig. 6 a broken View'in vertical central section of the tenonof the hammer handle.

showing the impression made therein byonef face of my improved imperiorate wedge;

F g. 7 a ClGta-ChQClVIGW 1n s de elevation of one of the modified forms which my improved imperforate wedge may assume.

Fig. 8 an edge vlew thereof. p My invention relates to an improvement in self-locking metal wedges for securinghann nier-heads, hatchets, and the metal parts or kindred tools to the wood handlesthereof, notwithstanding the shrinkage of the same.

the object of my invention beingto produce a superior wedge of the character described. in so far as it avoids the cutting of the fibers of the wood and deflecting or lacing them through transverse openings in the wedge.

With these {ends in View, my invention consists in an imperforate self-lockingmetal wedge having one or both of its faces configurated for the insolation and deflection 0t fibers of the wood in the planes of the said face or faces and at an angle to the longitudinal axis of the handle of the tool.

My invention further consists in certain details of construction as will be hereinafter described and particularly pointed out in' the claims. 7

In carrylng out, my lTflVIlt-IOD, as herem shown, l

13 and the other in the use of the hammer.

. in Fig-33s. of the wedge 20 are formed with compleribs 13 having such a wedge is the wood handle '15. n'iounting' the clawhammer 16, the fibers of the wood forming the opposite walls of the mortise 0r cleft 17 in tliesaid tenon will be entered by the apex of the spreading point-13 and by the pointed lower ends of the ribs 13, andisolated in.

groups or handles 18 and deflected in opposite directions from the longitudinal axis 19 (Fig. 6) of the cleft or mortise 17 and hence of the handle 15, as shown in Fig. 6. in planes which are substantially parallel with the faces of the wedge. But the fibers, as I wish to particularly point out, are not transversely cut, as in the use of those wedges in whichthey are deflected or laced througlrholes or opening-sin the wedges. 611 the contrary he fibers of the bundles or cables ot fibers are compressed and condensed by the described swaging action of thepoint 13 and the ribs 13. Since the lie in the grooves 11 of the we'dgeat an angle to the longitudinal axis 12 thereof, they will lock and hold the same in place,

eventhough the wood shrinks, and thus prevent the hammenhead 16 from. flying; off In case the wedge, owing tothe shrinkage of the wood,

gets loose, it will not come out, butmayreadily be tightened by ablow driving it still further inward into the wood. A self-locking wedge constructedin accordance with my invention may assume a consideral'ilo variety of forms without de-' parting; from its principle. One of such 2 groups or bundles 18 of fibers thus deflected modified or alternative gtdrms is illustrated and 8. in which the opposite faces mentary, inwardly-diverging downwardly opening grooves 2]. separated by a triangular spreading-point 22 and merging at their upper ends into a wider common gi rooye 23. In this construction, theypoint ot the wedge consists of an integral leattplanes substantially (re-incident with the opposite faces of the wedge and produce, as llS'WGIQ, bundles of fibers standing at an angle to the longitudinal axis of the wedge, and hence of the handle, in which any tendency of the wedge to work outward will be effectively resisted by the engagement of the inner shoulders 25 of the grooves 21 with the inner edges of the bundles ot-fibers lying in such grooves.

I would, therefore, ha to it understor-nl' that I do not limit inysil't to the C()119tl\l"t.l( lif4 shown and described, my invention broadly comprehending wedges having their opposite faces formed with downwardly-openiup; grooves or otherwise configured for the deflection of bundles or sets or the fibers of a wood tool-handle in the planes of the 0pposite faces of the Wedge. so as'to stand at an angle to the longitudinal axis thereof and to constitute locking means for holdingthe same in place.

I claim:

1. An imperl'orate selt-loeking wedge for securing tools to wood handles, having one elf its faces formed with one or more downwardly-opening, ohliquely-disposed grooves for the oblique deflection of fibers of: the

.wood in the plane ol the said :tace at an Y and reception oi sets or hundles ol li'ners ol' the wood in the planes ol such l'aees and at an angle to its longitudinal axis, the lower ends of the ribs being shaped to enter the fibers ol the wood For the sidewise displacementthereof.

In testimony whereof, I have sign d this specification in the presence of two subscribing; witnesses.

EDWIN w. mini'iaizn.

\Vitnesses Fnnnnnic C. EARLE, h Lxnconw P. Niouons.

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