US2005534A

US2005534A - Wheel puller

Info

Publication number: US2005534A
Application number: US709160A
Authority: US
Inventors: Arthur L Cornwell
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-01-31
Filing date: 1934-01-31
Publication date: 1935-06-18
Anticipated expiration: 1952-06-18

Description

June 18;, 1935. A. L. CORNWELL WHEEL FULLER Filed Jan. .31. 1954 v F Wu Wlmm 66 F F .0 Z3, I o z 6 u 1 mm 2 J n 1 mw Ma v 4 M l W w u M IHIIIIIIIIIII l l Patented June 18, 1935 STATES TENT OFFICE Application January 31,

15 Claims.

This invention relates to pulling devices, and more especially to those adapted to pull vehicle wheels from their axles. The invention embodies several novel and important features which combine to provide a superior puller of stronger construction, faster, more convenient and more. efficient in operation, and yet relatively simple and of few parts.

The invention relates more especially to pullers for automobile Wheels having each hub thereof provided with a plurality of outwardly-extending wheel holding stud bolts located in a circle around the longitudinal axis of the hub. In wheels of different manufacture, these'bolts vary in number and the circular arrangements thereof are located atdifferent radial distances from the said axis, and such variations have heretofore required the use of different pullers to accommodate the different wheels. "This requirement has not only necessitated that automobile repair shops shall purchase and keep at hand a plurality of pullers, but has furthermore caused considerable confusion and loss of time in the determining and locating of the proper puller to be used for each job. One object of my invention is to provide an improved puller for this type of wheel which will not only accommodate all of said wheels of different manufacture, but which is furthermore of simple construction and more economical and efficient in use than like pullers heretofore known.

More specifically, my improved puller embodies a main body portion having attached thereto a plurality of arms adapted to engage over and be anchored to the said stud bolts. The arms are mounted for pivotal movement on the puller, whereby to accommodate bolts located at different radial distances from the axle, and certain of the arms are adjustable circumferentially in the puller whereby to accommodate bolts ofdifferent spacing oircumferentially. The puller is so constructed, however,. that. the adjustable arms are normally held from circumferential movement andby mechanism which causes all the arms to move simultaneously and in equal degree upon pivotal movement. of one of the arms, thus keeping the wheel engaging outer ends thereof equal distances from the central longitudinal axis of the puller. f Furthermore, one of the arms is permanently fixed against circumferential adjustment and indices are provided for indicating the circumferential position of the adjustable arms for proper engagement with the stud bolts. The said mechanism is so arranged and so cooperates with the arms puller.

1934, Serial No. 709,160

as to permit convenient adjustment thereof and thereafter securely hold the arms in adjusted. position, all as hereinafter more specifically described. The production of an improved wheel puller embodying such novel features is a further object of my invention.

These and other features of the invention will be best understood and appreciated from the following description of a preferred embodiment thereof, selected for purposes of illustration and shown in the accompanying drawing, in which Fig. 1 is an elevation of my improved puller in normal position, the body portion being shown in longitudinal section;

Fig. 2 is a like view showing the puller applied to a wheel hub;

Fig. 3 is a sectional view taken of Fig. 2; and

Fig. 4 is a fragmentary view in longitudinal section showing a modified form of my puller.

Fig. 5 is a fragmentary view in longitudinal section showing a further modified form of my on line 3-3 The puller illustrated in the drawing is particularly adapted to the pulling of wheel hubs i and like members having a plurality of outwardly-extending stud bolts located in a circle around the central longitudinal axis thereof, such as the stud bolts ii] in the hub l2 located around the driving axle M on which the hub is mounted. As illustrated in Fig. 2 of the drawing, the wheel has been removed from the hub and the puller applied to the bolts ID 'in lieu of the wheel.

The puller, shown in its normal position in Fig. 1, comprises a body portion including a body member l6 and a second member l3 cooperating therewith, a pluralityof arms 20 carried bythe body portion and a power screw 22 threaded axially into and through the member I 6. The member it is ofshell-like construction having an open front end with a peripheral overhanging annular ledge 24 and a sleeve 26 projecting forwardly from the member about its longitudinal axis. The said member I8 is mounted to slide on the sleeve and is normally forced forwardly by a spring 28 tending to expand against the sleeve and an angular surface 30 of the member l6.

The puller is shown as provided with three like arms it, each arm having its rear end mounted in the circumferential channel formed between the member l8 and the ledge 24 and anchored to the body portion of the puller and its front end flanged outwardly at 32 and provided with perforations 34 or the like to engage over the bolts ill. The rear end of each arm is provided with an outwardly-extending hook at 36 and with an inwardly-extending lug or fulcrun 38, and these ends are anchored within the member 66, the hooks 35 engaging the overhanging ledge 25 and the lugs 38 engaging within an annular groove 39 in the member 58. Forward movement of the member is under the action of the spring 28 pivots the arms outwardly in equal degree and to the extreme position of Fig. 1, in which position shoulders 32 on the arms engage against a flange ts on the member 13, thus limiting such movement of the member and arms.

The hooked ends of the arms are slotted at 16 and one of the arms is held against circumferential movement or adjustment by a pin 48 extending through the wall of member l6 and into this slot. The other two arms are normally held against such circumferential movement by the frictional engagement of the members I6 and i8 thereagainst caused by the spring 28. Wheels of different manufacture have different numbers of stud bolts in, these numbers ordinarily being t, 5, 6 or '5, and, by making two of the three arms circumferentially adjustable, I provide for the accommodating of my puller to any and all of such wheels. It willbe noted that the front face of the member Iii, adjacent to each of the adjustable arms,.is provided with four index marks l, 5, 6 and l, and the adjacent face of each arm is given a cooperating index mark 50. These numbers correspond to the number of stud bolts on the wheels to be pulled. Thus, if the wheel to be pulled has seven stud bolts, the two adjustable arms are adjusted circumferentially to positions bringing their index marks 59 into alignment with the adjacent 1 index, etc.

The puller is normally held in the position of 1, wherein the arms are fully extended outwardly and wherein the two circumferentially adjustable arms are held against circumferential movement by the frictional engagement thereagainst. To adjust these arms circumferentially, the operator presses one of such arms and the fixed arm inwardly, which action forces the member 58 rearwardly and thus releases the frictional engagement on the third arm. This arm can then be freely adjusted to bring its index 59 into alignment with any one of the four cooperating indices. When thus adjusted, this arm is brought and held inwardly and the other adjustable arm released and adjusted in like manner and, when the arms are thereafter released, they are securely held in their adjusted positions by the said frictional contact thereagainst.

Any suitable power means maybe provided on the puller for engaging the end of the axle and forcing the wheel hub therefrom. For convenience, and preferably, I utilize a screw 22 for this purpose. This screw is threaded into and through the body member H3 along its longitudinal axis and preferably has provided on its outer end a hammerhead handle 5'3, of the nature described and claimed in my Reissue Patent No. 18,556 and my Patent No. 1,895,448.

The operation of my improved puller on the automobile wheel hub shown in Fig. 2 is briefly as follows. First, see that the two adjustable arms 29 are adjusted to positions corresponding to the number of stud bolts on the wheel to be pulled. The three arms are then surrounded with both hands and compressed to a position wherein the flanged portions 32 are slid over the bolts l9, it being understood that the mounting of the arms in the puller is such that the arms move radially in equal degree, thus at all times keeping their flanged ends 34 in a circular arrangement coaxial with the axis of the screw 22, whereby to fit stud bolts arranged in circles of different diameters. The nuts H! are then applied to the bolts and the power screw rotated forwardly against the end of the axle M with sufficient force to draw the puller and hub rearwardly therefrom. The pulling operation is facilitated by the vibration and screw rotating movements effected by striking the hammerhead end portions 56 of the handle 54, as will be understood.

The form of my invention illustrated in Fig. 4 is similar to that shown in Figs. 13 and already described. The body member 15, arms 20, power screw 22 and spring 23 are the same and are indicated by the same reference characters. The member 69, slidably mounted on the sleeve 26, has an annular shoulder 52 opposed to a washer 36 extending freely about the member and between the spring 23 and arms 20. The expanding action of the spring normally forces the washer into contact with the adjacent curved portions of the arms and outward pivotal movement of the arms is limited by the engagement of shoulders E6 thereon with the outer edge of The puller is assembled as follows. The spring 28, washer 64 and member 60 are firstplaced inside the member HS. The member is then forced to its maximum rearward position, this being done by placing a bushing against the outer end of the member and then placing the member I6 and bushing between the jaws of a vise. All three arms 20 are then hooked into the puller and their lugs 38 placed within the groove 68. When the vise is released, the spring 28 forces the member 60 forwardly to a position wherein the arms are securely held between the members It and 69.. The relatively heavy spring It is then snapped into placein the groove 68 for the purpose of taking up all looseness between the arms 20 and member 60.

The use and operation of this form of my puller is the same as that shown in Figs. 1-3 except that the arms 20 are not normally thrown to their outermost position. The spring 28 forces the washer 64 into contact with the adjacent rounded portions of the arms, causing sufiicient equal degree, whereby to keep the wheel engaging outer I ends thereof equal distances from the central longitudinal axis of the puller. When adjusting the arms circumferentially, as described in reference to Figs. 1-3, inward pressure on two of the armsforces the member 60 rearwardly and its shoulder 62 engages and access;

forces the washer 6i rearwardly, thus releasing the pressure of the washer on the third arm, which may thereupon be freely adjusted circumferentially.

It will be understood that my improved puller may be considerably modified within the scope of the appended claims. For instance, the body member is not necessarily constructed in one piece, as illustrated in Figs. 1-4, but may be formed of independent pieces, as shown in Fig. 5. In this form of the invention, the body member comprises an outer piece 8t having an inner sleeve portion 82 which maybe threaded thereinto at at. The piece 8% forms a housing for the inner ends of the arms 3! and the portion 82 has an overhanging ledge 83 at its forward end for cooperating with the arms. The inner ends of the arms are engaged with a second member 88 slidably mounted on the sleeve portion 32. A spring 99 and washer 5 2 are provided rearwardly of the arms and function in the manner already described in reference to Fig. 4. It is believed that the construction and operation of this form of my invention will be clear without further description herein.

their outer ends projecting beyond the body portion and constructed to engage the member to be pulled, power means carried by the body portion for engaging the end of an axle on which the wheel is mounted and forcing the wheel from the axle, means carried by the body portion for causing all the arms to move simultaneously and in equal degree upon pivotal movement of one of the arms whereby to keep the wheel-engaging outer ends thereof equal distances from the central longitudinal axis of the puller, and means including the lastnamed means normally and irictionally binding the arms against circumferential movement in said channel, certain of the arms being adjustable circumferentially along the channel when said binding engagement thereon is released by forcing other of the arms inwardly.

2. A puller for a wheel or the like, comprising a body member, a second member cooperating therewith, a plurality of arms supported for radial pivotal movement and circumferentially adjustable movement by and between the members and having their outer ends constructed to engage the wheel to be pulled, resilient means acting on one of the members in a direction normally pivoting the arms in equal degree in one direction, and power means carried by the body member for engaging the end of an axle on which the wheel is mounted whereby to force the wheel from the axle.

3. A puller for a wheel having a hub provided with a plurality of outwardly-extending stud bolts located around the longitudinal axis thereof, comprising a shell-like body member open at its front end and having a sleeve projecting forwardly from the member about its longitudinal axis, a second member mounted to slide on the sleeve, a plurality of arms supported for radial pivotal movement and circumferentially adjustable movement by and between the members and having their outer ends constructed to engage over said bolts, means for sliding the second member on the sleeve in position to engage the arms between the members, and power means carried by the body member for extending through the sleeve and engaging the end of an axle on which the wheel is mounted whereby to force the wheel from the axle.

4. A puller for a wheel or the like, comprising a shell-like body member having an open and overhanging front end and having a sleeve projecting forwardly from the member about its longitudinal axis, a second member mounted to slide on the sleeve, a plurality of arms supported for radial pivotal movement by and between the members and having their outer ends constructed to engage the member to be pulled, means for moving the parts to position wherein the engaged with the said overhanging portion of the body member, and power means carried by the body member for extending through the sleeve and engaging the end of an axle on which the wheel is mounted whereby to force the wheel from the axle.

5. A puller for a wheel or the like, comprising a body portion, a plurality of arms having their outer ends projecting beyond the body portion and constructed to engage the member to be pulled, means providing a circumferential channel mounting the arms for radial pivotal movement within the body portion and permitting circumferential adjustment of certain of the :1

arms along said channel, means one of the arms against such adjustment while permitting said pivotal movement thereof, and power means carried by the body portion for engaging the end oi an axle on which the wheel is mounted whereby to force the wheel from the axle.

6. A puller for a wheel or the like, comprising a body member, a plurality of arms having their inner ends anchored thereto for radial pivotal movement and circumferentially adjustable movement and having their outer ends projecting beyond the member and constructed to engage the member to be pulled, means acting resiliently on the arms to pivot them in equal degree in one direction, and power means can riedby the body member for engaging the end of an axle on which the wheel is mounted whereby to force the wheel from the axle.

'7. A puller for a wheel or the like, comprising a body member, a plurality of radially pivotal arms extending thereinto and having their outer ends projecting beyond the member and com structed to engage the member to be pulled,

hooks on the inner ends of the arms anchoring the arms to the body member whereby to sustain the wheel pulling force, means within the body member for causing the arms to pivot simultaneously and in equal degree, and power means carried by the body member for engaging the end of an axle on which the wheel is mounted whereby to force the wheel from the axle.

8. A puller for a wheel or the like, comprising a shell-like body member having an open and overhanging front end integral with a portion thereof, a plurality of arms extending into said open front end of the member and having hooklike ends engaging said overhanging portion thereof in a manner permitting radial pivotal movement of the arms, the arms projecting outwardly beyond. the member and having the outer ends thereof constructed to: engage the member to be pulled, and power means carried by the body member for engaging the end of an axle on which the wheel is mounted whereby to force the wheel from the axle.

9. A puller for a wheel or the like, comprising a body member, a second member cooperating therewith, a plurality of arms supported for radial pivotal movement by and between the members and having their outer ends constructed to engage the member to be pulled, means including resilient means acting independently of said second member to force the arms toward and hold them in cooperating relation with a portion of the body member, and power means carried by the body member for engaging the end of an axle on which the wheel is mounted whereby to force the wheel from the axle.

10. A puller for a wheel or the like, comprising a body member, a plurality of arms having their inner ends anchored thereto for radial pivotal movement and having their outer ends projecting beyond the member and constructed to engage the member to be pulled, means carried by the body member and acting to cause the arms to move simultaneously and in equal degree upon pivotal movement of one of the arms whereby to keep the wheel engaging outer ends thereof equal distances from the central longitudinal axis of the puller, power means carried by the body member for engaging the end of an axle on which the wheel is mounted whereby to force the wheel from the axle, and resilient means carried by the body member and acting to cause frictional engagement on movable parts of the puller to prevent free pivotal movement of the arms.

11. A puller for a wheel or the like, comprising a shell-like body member open at its front end and having a sleeve portion projecting forwardly from the member about its central longitudinal axis, a second member mounted to slide on the sleeve portion and having an annular groove formed within its outer surface, a plurality of arms mounted for radial pivotal movement between the members and having their outer ends constructed to engage the member to be pulled, each arm having a portion of its inner end engaged within said groove of the second member and having an oppositely-disposed portion engaging and anchored to the body member, and power means carried by the body member for engaging the end of an axle on which the wheel is mounted whereby to force the Wheel from the axle.

12. The puller defined in claim 11, in which the said annular groove is wider than the portions of the arms extending thereinto, and means within the groove for locking the said portions in predetermined position therein.

13. A puller for a wheel or the like, comprising a shell-like body member open at its front end and having a sleeve portion formed of an independent piece and rigidly connected thereto at its rear end and projecting forwardly within the member about its central longitudinal axis, a second member mounted to slide on the sleeve portion within the shell-like member, a plurality of arms mounted for radial pivotal movement between the members and having their outer ends constructed to engage the member to be pulled, each arm having'a portion of its inner end engaging the second member and another portion thereof engaging and anchored to the body member whereby to permit pivotal movement of the arms and hold the arms connected to the body member, and power means carried by the body member for engaging the end of an axle on which the wheel is mounted whereby to force the wheel from the axle.

14. A puller of the class described, comprising a body having an outer portion and a hub portion, the hub portion being disposed axially of the body and located within the outer portion, a plurality of work-engaging arms projecting outwardly beyond the body and having their inner ends extending thereinto between the said portions thereof and hooked into engagement with one of said portions, and a member slidable on the hub portion and engaged with the arms to pivot them simultaneously upon sliding movement of the member on the hub portion.

15. The puller defined in claim 14, wherein said arms are adjustable circumferentially of the body without disturbing said hooked engagement thereof, and spring means normally acting to hold the arms in frictional contact with the body and against circumferential movement.

ARTHUR L. CORNWELL.