US1633453A - Pulling device for gears and the like - Google Patents

Description

June 9 7 J. w. MILLER PULLING DEVICE FOR .GEARS 'AND' THE LIKE 2 Sheets-Shee t 1 Filed April M 1926 1,6 ,4 June 21, 1927. JAM MlLLER 33 53 PULLING DEVICE FOR GEARS AND. THE LIKE Filed April 24, 1926 I 2' Sheets-Sheet 2 m. 5 7:; Y I v-U /7 I Patented June 2 1, 1927.

'LUZNJTiED JQHN w II,L R,,;OF EKIEDOBADO, p-R-KANSAS.

' LQULLING nnv'ronron enansnmnmnn mxn.

work,- wherein 1 the jaws are .et liciently" held,

agga-inst accidental detachment although reyersible, and wherein the c,ons trt 1ction is ene al y serrated, simp i ed;al w i e te 1 .'eefii ie the more p cifi ebie sand ad a ta will become apparent from a. consideration .e ilm-al martian. el evine take ie eli tion with accompanying drawings illustratnsta l opera embod In said drawings:-'

Figure 1 isa View of the device in front elevation;

Figure 2 is a View thereof in end elevation; Figure 3 is a sectional view taken on the line 33 of Figure 1;

Figure 4 is a plan view'olt the device, with the upper portion of the pulling screw shown in section.

Figure 5 is a vertical sectional view show ing a different form of jaws in place;

Figure 6 is a detail sectional View taken on the line 6-6 of Figure 1;

Figure 7 is a detail sectional view taken on the line 7-7 of Figure 1, and

Figure 8 is a detail sectional view taken on the line 88 of Figure 5.

Referring specifically to the drawings, a suitable plate or stock is provided as at 10, being generally of H-shape in'that it has a central hub 11 and pairs of spaced longitudinal arms 12 with longitudinal slots 13 therebetween. A pulling screw of any appropriate form is shown at 14 as screw threaded in the hub 11 and as having ahead 15 for engagement by a wrench or tool to impart rotation thereto. The free end of the screw may directly engage the work or it may engage a butter block 16 as shown in Figure 5 and which is first applied against the work.

The upper surfaces of the arms 12 are corrugated or provided with notches 14 which are occupied by cross heads 15 of puller jaws 16. In order to prevent possibility of accidental turning of the jaws 16 in the slots 13, such jaws at the slots are preferably square or otherwise polygonal in cross secengagement with the stock.

The jaws 16 at their free ends are pref-' t-lQII jQSi bQSt shown in ,Figure. 6. Such aws 1;nay :be secured 111 any pair. of the notches 14 according to the adustment desired dependent on the sizeofthe, parts to be pulled ,gmgdsuch ,jaws a nay ,also be reversible from a wa ehe id In ,order v,to holdh the head .15 against danger of accidental detachment. ,fro1 n tl 1e notches, 1 4, ,a resilient holder ,plate v1 7 is provided, which plate has depending hooks 1.8, resiliently, ,elipping into notches 19, in the stock .10, thereby holding the plate ,17 ,in

place. Such ,plate 17 is nade' of resilient vlnetal and ,has outwardly extending wing; 20, rhi h y el ins 1 be 9 th I tos he =1 tS l -iw it i tie enab es th viaw l be readily lifted against .the tension (of. the

springs 2O in reversing the jaws or changing the position of the cross head 15 from one pair of notches 14 to another.

The said jaws may be arranged at any desired angle and have further means so as to prevent danger of displacement, partic'ularly when the jaws are in engagement with work. To this end, each jaw has a lug 21 extending laterally therefrom and, in which a screw 22 is threaded. Such screws bearagainst blocks 23 bifurcated at 24 to embrace the jaws, as best shown in Figure 6. By means of the screws 22, the blocks 23 may be screwed to the desired position for erably deflected slightly inwardly as'at 25 and they terminate in lugs 26. The reversal of the jaws would permit the lugs 26 to extend away from each other rather than toward each other as shownin Figure 1. Such formation of the jaws, is of course optional since the same will vary according to the work. For instance in the modified form of jaws shown in Figure 5, they are straight throughout and have lugs or heads 27 at their lower ends notched'as at 28 and provided with project-ions 29 opposite thereto. This form of jaws, namely that of Figures 5 and 8, primarily adapt the tool for use on Ford automobiles. I

It is obvious, that in use, theljaws at the lugs 26 or 27 engage the work to be pulled and that the screw 14 is placed against a part to remain in place, and operated, so as to move the stock longitudinally of the screw and thereby remove the gear orother art.

It will be obvious that no limitation is to be implied as to the work which may be accomplished. For instance, the device may pull the drive pinions, drive shaft sleeve, transmission clutch drum, main transmission drive gear, the timing gear from a crank shaft or the like, and that where one pair of jaws will not accommodate the work, that the other pair may be substituted without material loss of time.

Various changes may be resorted to pro vided they fall within the spirit and scope of the invention.

I claim as my invention 2- 1. A pulling tool of the class described having a head, a pulling screw carried by the head, jaws carried by the head capable of swinging movement thereon, lugs on said jaws, screws threaded in said lugs, and blocks carried by said screws and engaging the head to limit the swinging movement of said jaws.

2. A pulling tool of the class described having a head including spaced arms notched on their outer sides, jaws to engage the work having cross heads engaging the notches,

lugs on said jaws, screws threaded in said lugs, and blocks carried bysaid screws and engaging the heads to hold the cross heads in the notches and limit the swinging movement of said jaws. I

3. A pulling tool of the class described comprising a head,plates having hooks detachably engaging said head, resilient wings extending from the plates, and jaws to engage the work fastened against the head against accidental displacement by said wings. 4. A pulling toolofthe class described having a head of id-shape, thereby providing a hub, and arms extending therefrom in parallel relation with slots therebetween, the out er surfaces of said arms having notches, said head having slots, a plate having hooks detachably engaging said slots, resilient wings extending from said hooks, ascrew threaded in the hub of said plate, and workengaging aws extending through said slots, said jaws having crossheads engaging said notches and in turn engaged by-said wings.

In testimony whereof I afiix my signature.-

JOHN w. MILLER.

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