US2052534A - Combination gear puller and press - Google Patents

Description

Aug. 25, 1936'. I

T. w. QUARLE'S COMBINATION GEAR FULLER AND PRESS Filed De. 24, 1934 2 Sheets-Sheet 1 u mmuu .1 37' ll zq.

Aug. 25, 1936. T. wf uARLEs 2,052,534

- GOMBINATION GEAR FULLER AND PRESS Filed Dec. 24, 1934 2 Sheets-Sheet 2 INVENTORV W WWW Patented Aug. 25, 1936 I UNITED STATES PATENT OFFICE COMBINATION GEAR PULLERVAND PRESS lfhomas William Quarles, Larned, Kans.

Applioation'December 24, 1934, Serial No. 758,906

4 Claims.

My inven ion rela es t an mp v t vin a combination gear-puller and press useful to maine shens, factories and in t trades r vin g ars, s rocket and the ike m shaftaend or th fu ther pu p s f'p e sing bushinesand the lik fr m whee hu s; and for Such her uses as eear pullers nd. the ind pen presses are us a l adapted;

Que o the obieetsof myinve ion s to maintain a desired applicationof power requisite for t e. pur s s intendedand a s to a s m eent of the part parall sm with its prior posit on on the shaft or sur ac from which it isto. be remo ed. 'erfurther b ct s. to cr e 15 a clamp vise-like grip'up n the pu l mea and to overcome any tendency of the parts to dis n a e-a d fa l ofi theass mblae A u t e obj ct is to nablehamme bl w o e st k and d eteduronther end of t e sc w sh zdwitheutdamae to he thre ds t s w einent of the device. 'These and-other objects will "Ila-11 in Fig. 1 and looking in the direction of the arrows. Fig. 3 shows a side view of the mechanism seen inFig. 1. Fig. 4 shows a cross-section view taken along the vertical plane IVIV Q\-in Fig. 3 to show the operative parts of the mechanism. Fig. 5 shows a sectional view taken through the parts I02:- and Na in Fig. 7. Fig; 6 representsa view taken along the line VI-VI in Fig. land'lookin'g in. the direction of'the ari,- rows. Fig. 7' shows a view taken along the line VII'TVI'I in Fig. 1 and looking in the direction of the arrows. Fig.8 shows an end view of the sleeved bushing used in the combination with" parts Ibrokeh away for convenience of illustra- 'tion; Fig. Qrepresents a side view of the sleeved bushing seen in Fig. 8. Fig. showsa sideview of the view shown in Fig. 9 as turned at an angle of'90 degrees, with the swedged portions 'of the sidebars-of the frame combination in allied as-. soc'iation i therewith and retaining screws. through the. side frame members in operative relationship within the slots of the. bushings as illustrated in Figs. 8 and 9. H

Referring-to the 'dmwmgst'awo" and I l are seen the main side frame members of the device, spaced apart by the end members l2 and I3 and the central members [4 and I5 and rigidly connected and held as a unit frame by such rivet means as I6 and in a manner readily understood. As seen in Figs. 1 and 4 the members l4 and i5 extend below the side members I!) and H. These members are swedged outwardly as at I050 and Ila: between the members l4 and I5 providing a bearing space 'for a slidable bushing IT. This bushing has a head l8 and as seen in Figs. 7, 8, 5 9 and 10 the opposite faces of the head l8 are flattened out so that they bear between and contact the extended parts [4 and I 5, Fig. 1, and prevent turning'of the bushing IT in its bearing while permitting the head l8 to bear against the under 10 portion of the parts Illa: and I la: as in Fig. 7. The bushing I! in length is equivalent to the depth of the parts Ila: and Illa: and is. threaded at l'lzr to receive the screw element IS. A hexagonal nut 20 is integral'with the screw element H], but the portion of the element 19 above the nut 20 is not threaded, instead 'itextends as a shaft portion 2|; for purposes. later explained. Intermediate the side members I0 and I l are shown the pulling members 22 and 23 pivotally hinged upon bolts 24.:and which pass through the holes 24 and 25 in the side members l0 and II and secured in place by means of the nuts 25.13. Other holes 24" and. 25'! "are provided in the members 22 and 23 whereby thepivot points may be changed for'accommodat'ingwork ofcdifierent diameter from that disclo'se'din Fig. 1. It will be noted that the members 22 and 23 have inwardly positioned hooked ends 22a: and 231:, While their opposite ends are also hooked as at 22y and 2331 but arranged'in opposite outwardly directions. Thus by interchanging the pulling arms from the position seen in Fig. 1' to that. disclosed in Fig. 4, an internal gripping of the parts is accomplished in-' stead of the outward grippingas seen in Fig. 1. Now i't'will be understood that for gear pulling and the like that the hooks in Fig. I would engage directly upon the gearor the sprocket that is to be removed from its shaft.

'Forcertain work, such for instance as the removal of bushings from wheels, it is desirable to" maintain a more constant pressure against the hub'of the wheel. Thisis accomplished by inserting the arms 22 and 23 through the spokes of the wheelfor so that theh'ooked ends engage within "recessed portions of a'r'ing-like' collar 26 as shown at 26m and 26y. The collar 26, as will be understood then bearsagainst the full contour of the hub and face; eliminating the hazards of hub breakage common to most tools employed for this purpose.

One of the most valuable features of my invention consists in the vise-like clamp I am able to impart to the hinged pulling members 22 and 33. ficrew means such as 21 and 28 are employed the casemay be, and so as to bear against the hinged members 22 and 23 in proper manner, I am able to center the end 193: upon the shaft,

either concentric with its axis thereof or off cena ter as the case may be, the part clamped by the gripping means of the member 22 and 23 moving in parallelism with its prior aflixedposition-,- as

pressure is applied at the screw nut 20, by means of a Wrench.

In removing a gear, sprocket or the like-, very frequently the full power of gear pullers has been absorbed Without starting the. frozen part from screws '27 and 28 upon the pulling members 22 v and 23 I am able to strike heavy blows with a hammer uponthe projecting end 2| of the screw member I 9 without dislodging the gripping means 22a: and 23x and thus start or break the frozen connection of the gear or the like and thus perform an easy removal of such part. This is likewise true for the removal of a frozen bushing and the like, in which case the ring 26 is employed end of the bushing or so that the pressure "on" the bushing would be properly applied around its periphery; Now the reason I am able to strike heavyblows .upon the end 2| of'the screw l9 without damageito the threads becomes again '9.

major feature of 'thisnew inventio'np In Figs. 8, '9 and 10 is seen the sleeved'bushing I! having a head I8 normally contacting the members I09: and I In: of the frame. Midway between the ends of this bushing 11 are seen indentations or slots Fly and H2. Retainingiscrew pins 35 and 36 threadedthrough theportions vIlla: and l lzc enter the slots H y and I 12 and maintain the bushingl'lfamiliar with the damage usually done to the threaded shaft of gear pullers as customarily built and used. 'At 3'l and 38. are holes, through the: frame members which :are used to pass bolts for fastening the device rigidly upon a bench when so desired. Since the'bushing, I1 is equivalent to-the depth of the side members. I03: and H93 and the bushing is to more or less extentflexibly'sleeved and slidable within the. bearing surface included between the adjacent walls-of the parts l4| D:L'--

is no. tendency of projecting ;,I5-'-.l in: there threaded parts of the-screw l9,.,to come into possi' ble contact .with such bearing surface under cross. pulls commonly experienced in devices of thischaracter. .iJamming therefor of the threads on.

the screw I9 is obviated. The swedging of parts I0.1:l Ia: materially increases the strength of the device. The reversible feature of the jaws and the possibility of adjustment taken into consideration with the possibility of the varied uses and combinations for which tools of this character are commonly used make the device practical for machine shop usage and fills a wide range of application without disengagement of the parts and without damage to the screw threads.- I Such modifications may' be. employed as lie within the scope of the appended claims. Having fully; disclosed my invention, what I now desire to secure by Letters Patent and claimras new is:

- 1. In a device of the class described, an integral frame comprising a pair of centrally and'outwardly swedged side members, spaced apart by a pair of end blocks and a pair of intermediate blocks; said latter blocks being arranged adjacent said swedged portions and extending below the v lower edges ofsaidside members; saidswedged the shaft;rby reason of the vise-like clamp of the portions and said intermediate blocks forming on their adjacent surfaces a' bearing as a receptacle 7 for a slidable bushing; said bushing being internally threaded and of alength equivalent'to the depth of' the sideframe'members and having a head portion normally bearing against the lowe'r edge portion of said side members and against the adjacentfaces of theze'xten'dedlower portions of said intermediate 'blocksr" I 7 2. In a device as'described in claim 1','charac'- f terized by the further factthat thebushing has indentations for receiving" pinelements detachably' secured to said side members for flexibly supporting the bushing Within th'e bearlng space I of the frame.

3. In a device as describedin claim 1; charac-f terized by the further fact that a screw member is adjustably'threaded'through said-bushing.

4:. Ina device of thecla'ss described: an integral i V 1"40 frame comprising a. pair of centrally and outwardly swedged side members} spaced apart by. i a pair of endblocks and a pair of intermediate blocks';"said intermediate blocks being arranged adjacent said swedged portions and extending below the lower edges of said side members; said" swedged f portions andsaicl intermediate blocks forming a bear'ing for a"slidable bushing; said] bu'shingbeing internally threaded andof a length equivalent to the depth of the side frame members" in said bushing and screw means engaging the side members and arranged within said inde'nta tions; a screw elementpassing said'bushing; 'each end block having threaded holes horizontally dis-i... posed for selectively receiving screw elements; a

pair of reversible and adjustable pulling members pivotally arranged intermediate said side members and supported thereby; said screw elements adjustablycontacting. the back edges of; the

pivotally depending pulling members for positioning said'members in aworking position" towards a screw member; said screw member passing and engaging said'threade'd bushing;

THOMAS-WILLIAM QUARLns;

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