US1769644A - Jig - Google Patents

Description

E. HENRICSON JIG Filed Oc t. 21. 1926 July 1, 1930.

Q J vIWiFWlQ; h J E; A I. L- v Patented July1,' 1930 STATES l EDWIN HENRICSON, or swam; MICHIGAN. A

JIG

Application filed October 21, 1925. se -mint, 143,052. v v parallel to the front faceof the standard My invention aims to provide a jig that may be advantageously used for holding various kinds of work to be drilled, bored or otherwise operated, the jig being designed so that material may be removed from the same to adapt the jig for other work than that for which it is specially designed.

. My invention further aims to provide a jig with a substantially guidedv jawand novel means for raising and lowering the jaw relative to a stationar'ybushing support. The adjusting means, under normal conditions ensures a positive and reliable clamp for apiece of work, but there are times when irregularities or inequalities of pieces of work necessitate a better clamping action.

For this purpose the jaw adjusting mechanism includesan auxiliary take-up device by which the throw or adjustment of the jig jaw may be regulated.

These improvements will be hereinafter specifically described and then claimed, and reference will now be had to the drawings, wherein 7 Figure 1 is a side elevation of the jig, partly broken away and partly in section;

Fig. 2 is a front elevation of the jig, partly in section; and r V Fig. 3 is a horizontal sectional view of the jig.

Reference will be had, to Figs. 1 to 3.inelusive showing a jig as comprising a base 1 having a standard 2 and detachably mounted on the upper end of the standard,

. is an overhanging bushing support 4 which projects from the front. side of the standard 1. The upper end of the standard has a surplus amount of material 5 which may be trimmed off or otherwise removed so as to place the support 4 in a lowered position from that shown in Fig. 1.

The base 1, under the support 4, hasibored bearings 6 and snugly fitted in these bear -ings are parallel posts 7 having the lower ends thereof flush with the lower face of the base 1 and provided with sockets 8, so that a tool may be mounted in said sockets to facilitate removal of said posts. These posts extend upwardly from the base 1 by screw bolts 3 or other fastening means,

toserve as guides fora 9 that confronts thesupport 4 and cooperateslitherewithffor gripping a piece of work. The jaw 9 ,has

.tubular end portions .10, to i eceive the' posts 7 and the tubular end portions lOlbear against the front face of the standard and thus cooperate with the jaw 9 in sliding against the'standard to press the jaw in its V movement relative to the post 7,. Connecting the tubular portions. 10 of the jaw 9 is a web 11 spaced from the from face of-the standard 2 so asto provide jalink'schamber orr'ecessi12. h a Y I Centrally of the standard 2 is' a transverse opening 13 communicating ,with a bearing 14 to permit 'of a rocksh aft l5being jourg naled in the bearing and standard, Suit:

ably'fixed on the outer end of the rock shaft 15 is a crank or lever 16 normally horizontal, as shown in Fig. 2 and adapted tobe swung from the position shownin Fig. 2'upwalidly to a reve'rs'e position, at :the, opposite-side of the jig. One position of the crankbn lever 16'is for an open condition of thejaw,

9 relative to (the support 4and theopp osite 7 position of the crank or lever represents a closed position of the jaw 9. 1 On "the inner endo'ff thef rock f'shaft -is, a concentricheacl 17 provided withan eccen' trically disposed-pin 18 journaled in the upperend of a link 19 slidable between the" head 17'fand the web 1110f the jaw struc:

ture; jOn'the lower end of the link" 19 is a:

pin20. jpurnaled in' an eccentrically disposed socket21fof a rotatable bearing 22 journaled in; the lower"port ion of the web 111 The bearing 22' may be rotated andfixed relatlVB 'tO the web. 11 bya jam-nut 2 3, and nut audits bearing constitutes angauxiliary take-up connection between the link 19 and the'slidable jaw structure.

i There may be irregularities or inequalities in the pieces, of work to 'b e held iii ,th e jjig, If 'so,fthe auxiliary takeup, device maybe quickly'adjusted so that there will be a ppsitive and reliable clamping action of the aw 9 for holding a piece of work under the suport '4. However, theremay be pieces of work that could not be firmly held by the lim ited action'of the edjustable' jaw,'theree 10: i o 't pp r l d' f-.thQ QW idZ- r withithis surplus material embodied in the fore this jaw has a surplus of material 24 v which can be removed when thejig is to be {adapted for work other than that for which -it-is originally designed. -AS shovvnapiece of Work within certain limits can be vfirmlg heldl Ifa, largerpiece of work is to behel material mayhe'lremoved from the gripping n face of the jaw-9; If a; smaller piece of Work is to be held material may be removed jig it is possible to convert the jig into 9;

- understood thetflthe 'st ueti ral elements; are susceptible to such variations and modifica-j 'holdingdevic'e for work of different dimensions thari that for which it is originally a designed. l i t V t itiis; thought, that the. utility offmy in; vention will be eigjparent without further is 'illflstratedfi' prefer ed embodiment of the g1. .A-jig comprising a base/3e stander-don said base, an overhanging support mounted r on" the upper veiidbf Said standard posts earried by s z id basl e a, jaw elidable on sajid'posts egz iiiet saifl' sta idard, a rook shaft ournalie din said. 'Stiiildflld, 1a b bearing mounted trangvers'elyin' saidjaw for rotative adjustmentthereiria dhav ir g an'eccenti ie socket, and a link connection between said shaft and socket,

i A jigeompriing sta e; stand'aicl o seidflbafse; anoyerhangiiig support mounted i ppeiien of sai St hdard,p0sts car ried by ,saidbas'e, a jaiw slidableon said posts aggainstisaid'stairdard, ai ock shzift'joiltnaledj in fsaid bmndaiid, a link ponnecti'on between said rock shaft aiid said jaw so that roeki ig of said shaft adjusts said'jaw, a nd anvecee itrio take-up l dviee; between "said Iiiik and "W y ,edii d 9 5 s aid basefan overha nging sl port mounted against said standard; aiocks ha ft journaled H in sz ici g taiidard g a bearing mounted trans-- i verseiy salidjaw ;f0 1}f rotative adjustment there n and having an eceentrie socket and an exposed:portio iideptedfor engagement by a wrench, a linkeXtehding from said rock. i shaft tosaid bearin membenand ,apin ex tending froirt 'saidfl pkjinto said socket. t

" n; testi i o iy whereof efiix my signature. 1

' ;v pwmpiiNmosonr j iii: in the diawing there

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