US1783961A - Tool-securing device - Google Patents

Description

9, 1930. I AL 1,783,961 ,TOOL SECURING DEVICE F116;: Feb. 10, 1923 I i v handle. -As shown clearly injjFig. l lthe legs 1 32am connected by. narrow neck 35 at the outer extremity of-thejvedge and the inner edges of the legs approach each other closely ata point spacedsomewhat belowthe-neck- 35 defining the; opening -'36;- The Width of the'neck35 is made substantiallyless than t th 3 averag dth th i vin e l nd 01 the opening 36 the'inner edges of'the legs diverge gradually to thepointedglovver ends of I the legs. The formation and, relative arf he leg .3 between as the'wedge 30'is driven into place Below r-angement of the neck35 and; the opening 36,

. andth'e gradual divergence o'frthe inneredges of the 'legs particularly a'daptathelegs to bie spread apart 7 the Wedge is being driven into place in the handle. Furthermoreg the neck 35 "being lbcated attheouter extremity from a hammer or other implement used for inserting the Wedge" and the blow will he received atsuch a; point relatively to the rest 3 of the 'vve'dge that itwill'have a tendency to spread apart the legs of the wedge' 'and tolock-=them inplace. V While for conven ence may be completely insertedffirst, and then a c c i s e fi ia i e mai terial of theneck will y1e1-fdor break1as may g be necessary to'permit' the legsto spread apart or' illustration both f f M 'ivedges' are'shown partlyfinserted in Figure '2, it is to be understood that the ridden Wedge edges which approach eachotherclosely at a point beyond the neck and diverge gradually from said point'to form extremities ofthe legs.

2.1A device for. securing a tool'head on a handle comprising a ridden Wedge, and a Y rider Wedge having legs ofsubs'tantia-l width conne ted by v a na row neck portion and, ex-

tendingatji'ght angles to-the ridd en Wedge, the edges ooeope-rati lgto exert a; jquartering action onthe liandle'jthroughout their'entire lengths',,the ridden Wedge being provided 0f the wedge'isadapte'd to receivea blow points at the free,

the rider wedge driven home to assume the positionshown in Fig. 4. The rider and ridden Wedges are of substantially equal lengths and' are' so shaped thatthey are adapted to be driven into the tool handle to equ'ail depths exerting a quartering action throughout their lengths.

It is to be noted that it 'is not important I itE aYfin connects the legs: :32: below hole 86,

as it Willbe split by 'yvdg ti n c Moreover, since the locking action ofon l g 32 is entirely independent of that of the ;other,fit"iis-not important the ridervvedge I 30 splits entirely in two as it isfinally seated. Y

- For these reasons the Wedges may be made of iron oroth'er meta'l by casting; and are ise than by thefterms of 'much less expjensi-vethan previous spreading Wedges; in which high elasticity is essential,

pensive methods; usually from steel.

necessitating their manufacture by'more exmachining or; other finishing" is necessary, j

the'wedgesbeing ready-forfluseaseast. c

While the: invention described as embodiedinya shoe hammehit is not our intention to Ii-mitfitsfiscopethereb'y; anotherf ases-a yvidth "the [appended 1 to? exert a; splittiangfacti ofii on the part into Which itjis 'inserted, the wedge beingbi-fure I 'eatedqto' provide?tweidependingflegs con 7 m me. by: narrow neckiiand having'inner i we a V "at

Images