US1475810A - Puller implement - Google Patents

Description

Nov. 27, 1923; 1,475,810

G. IE. FRISZ FULLER IMPLEMENT Filed Nov. 2l. 1921 fsf- ix Il La lil' f" ff Ta EQ! Z L WWW Patented Novu 27, 1923.

UNITED STATES lGEORGE E. FRISZ, 0F INDIANAPOLIS, IN'DIANA.

FULLER IMPLEMENT.

Application led November 21, 1921. Serial No. 516,837.

To all whom it may concern.'

Be it known that I, GEORGE E. Fiusz, a citizen of the United States, residing at Indianapolis, in the counity of Marion and State of Indiana, have invented certain new and useful Improvements in Puller Implements, of which the following is a specifica.- tion.

The present invention appertains to improvements in pullin imp ements or tools, commonly known in t e trade as wheel pullers, and designed not only for easily and safely removing such objects as wheels of motor vehicles, gears, couplings, fiy wheels and cams, but also for straightening of bent shaffting or similar purposes.

The invention is of simple construction, embodying a pressure head and screw therefor, pulling arms, and a linkage connection between the arms and the h'ead such that the application of pressure in the iemoving operation tends to increase the gripping acti on upon the object engaged in ratio with the pressure force employed.

In addition to providing for 'the foregoing objective, the arrangement I employ is devised to readil adjust itself for application to objects to e removed of varying sizes, such adjustment being produced either by a relative movement of the pulling members about their connection with the head or by the variation of the position of said members on the connection means.

It is further an important object of this inventionl to provide a construction wherein the gripping 1action of the pulling members may be exerted in either an inward or an outward directionwith respect tothe object engaged or the line'of i-ressure force, according to the position oi the pulling members with respect to a transverse axis of said head.

rllhese and such other objects as may hereinafter appear are attained by the novel construction, combination and arrangement of parts to be hereinaiiter specifically described and claimed.

Reference will now be had to the accompanyingdrawings forming .a part of this specification, wherein:

Figure 1 is a front elevation of an implemenit constructed in accordance with the present invention.

Figure 2 is a side elevation thereof.

Figure 3 is a sectional view showing a reversal position of the pulling elements.

Figure 4 is an cud elevation of the device as shown in Figure 3.

Figure 5 is a modified form ot pressure head.

Throughoutl lthe following detailed description and on lthe several ii rui-es of the drawing, similar parts are rcel-red to by like reference charilters.

Referring to the drawings. 1 designates the body portion. or pressure head and 2 the pressure producing screw having threaded wlmection with said head and adapted to be placed against the suppont such as a shatt for an object to be ronuwed therefrom. ln the construction oi the device shown in. Figure l l employ a pair of pulling arms 3 having a hookedextremity 4 at one ond and connected adjacent their other ends with the pressuie head at opposite sides. 'lho connection between cach arm and the houd is iu the form of a pair ot' link members 5 spaced apart in parallelism, one pivotally connected to the extremity ot' the arm opposite the h'ook and the other pivotally mnnected to the arm yait a point intermediate the two extremities. While cac-li ot' |these links in the construction depicted is formed` by spaced plates 5 and 5, one arranged at each side of the pulling aum, it will be apparent that these links may be of solid or integral form. The links are each provided with. one or more openings 6 to receive thepivot bolts 7 and by means ot' these span-od. openings the arms may be positioned farther or .closer to the head according to the size of the object which ift is desired to remove.

l Passing now to the operation of the device, and speaking with refercnceto that form shown in Figure 1, it will be apparent that the connection of the arms to the head by the spaced link members 5 will impart to the arms a circulatory motion, throwing the hook end inwardly toward the axis of the screw when said arms are shifted in a direction forwardly. The degree ot such movement will enable the adaptability of ap lication of the device in engaging relation to objects of varying sizes or diameters and the motion which has just been referred to I term the gripping action of the pull arms as distinguished from that action produced by the pressure force of theeisv screw 2 which is actually the pulling stress.. This pulling stress, in other words, isin a direction longitudinally of the pressure screw, but the gripping action is in a direction inwardly toward the axis of said screw. As the pressure is applied by means of the screw, relative movement of the parts is produced in the manner suggested, and as the pressure is increased the gripping action is proportionately increased so long as the position of the links 5 is at an angle to one side of a vertical plane passing through a transverse axis oi the head. The o posite action, speaking with reference to t 1e gripping action, may be produced by positioning the links to the other side of this transverse axis, or as shown in Figure 3. When so positioned the tendency is to move the hook end of the pulling arms 3 outwardly with respect to the axis of the screw or substantially at ri ht angles to the said axis. Advantage is taen of this peculiar movement of the arms produced by the double link connection in adapting the implement to engagement about the periphery oi an object to be removed. or positioning the object to be removed exteriorly of the arms as shown in Figure 8. In other words, for removing ily wheels or discs the position of engagement of the pulling implement would be that shown in Figure l, while for the removal of sprocket gears or similar objects the engaging position of the implement shown in Figure 3 is preferable. In this latter position the arms may be reversed so that the hooked extremities will be positioned outwardly to facilitate coaction of the hooked ends with the object to be removed. It thus follows that in either of the positions the adjustment, to accord with the diameter or size of the object is substantially automatic, so to` speak, caused either by a shifting of thehead 1 toward the head of the pressure screw, as by means of rotation of the screw, or by shifting the arms 3 in the opposite direction as the case may be.

Where the diameter of the object to be `removed is greater than is easily accommodated by the osition of the pivot connections between t e links and the respective arms in the innermost openings of the links, the arms may be shifted outwardly of the links with thepivot members 7 in the outermost openings. Obviously any number of such openings may be provided in the links within a reasonable range to permit the device to be used in connection with objects with a very large range ot sizes.

While in the preferred form I have employed but two arms 3, it will also be apparent that a greater number of such arms may be utilized, in which event thehead 1 is suitably formed with the proper number of flanges or ribs l, referring toiFigure 5 of the drawing, wherein three such ribs are depicted. In implement of this character 'a very diliicult removing operation may be perfor-ined because oi the extent of pressure which can be applied without mutilating injuring the parts operated upon.

llaving thus described my invention, what l claim as new and desire to secure by Letters Patent is:

l. In a nilling implement of the class described, the combination of a head and a pressure member engaging therewith, pulling arms, and means connecting the arms to the head, said means imparting to the arms a gripping movement incident to the operation ol the pressure means in a direction other than that ot the line of movement of the object.

2. In a pulling implement of the class described, the combination of a head and a pressure member engaging therewith, pulling arms, and means swingingly connecting the arms to the head such that said arms have imparted thereto upon operation of the pressure member a grippin action consonant withthe pressure pro uced by the said ressure member.

3. n a pulling implement of the class described, the combination of a head and a pressure member engaging therewith, pulling arms, and linkage means connecting the arms to the head and arranged to impart gl'ipl'iing action through operation of the pressure member to said arms as an incident to movement of the head thereby with respect to the object engaged.

4. In a pulling implement of the class described, the combination of a head and a pressure member engaging therewith, pulling arms, and linkage means havin pivotal connection with the head and with ie arms, said1 pressure member imparting gripping action to the arms in a direction substantially at right angles to the line of pressure force simultaneously exerted on the object engaged through said ressure member.

5. In a pulling imp ement of the class described, the combination of a head and a pressure screw engaging therewith, pulling means adapted to be engaged with an object to be removed, and link members arranged in parallelism between the head and pulling means.

6. In a pulling implement of the class described, the combination of a head and a pressure screw engaging therewith, pulling means adapted to be engaged with an object to be removed, and link members connecting each arm to the head and arranged in spaced parallel relation to each other.

7. In a pulling implement of the class described, the combination of a head and a pressure screw engaging therewith, pulling means adapted to be engaged with an object to be removed, and link members connecting each arm to the head and arranged in spaced parallel relation to each other, one of the links being connected to an end of the arm while the other of said links is connected to the arm intermediate its length.

8. In a pulling implement of the class described, the combination of a head, a pressure screw having threaded connection therewith, oppositely arranged pulling arms, a pair of link members connecting each of said arms to the head, and means whereby saidarrns may be adjusted with respect to said links.

9. In a pulling implement of the class described, the combination of a head, a pressure screw having threaded connection there` with, pulling arms adapted to be engaged with an object to be removed, spaced parallel link members connecting each arm to the head, Said link members having a plurality of openings therein whereby said arms may be adjusted with respect to the h ead to accommodate objects of-varying slzes.

10. In a tool of the kind described `the combination of a nut-block, a screw passing through the nut-block, a pair of parallel jaws at opposite sides of the block, parallel links connecting said jaws to said block, and a lug on each jaw for engaging a part to be removed from a shaft.

In testimony whereof I affix my signature.

GEORGE E. FRISZ.

Images