US1090681A

US1090681A - Tire upsetter and shrinker.

Info

Publication number: US1090681A
Application number: US67768012A
Authority: US
Inventors: James F Boyd
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-02-15
Filing date: 1912-02-15
Publication date: 1914-03-17
Anticipated expiration: 1931-03-17

Description

J. F. BOYD.

TIRE UPSETTER AND SHRINKER.

APPLICATION FILED T11R15 191 2.

Patented Mar. 17, 1914.

3 SHEETS-SHEET l.

WITNESSES ATTORNEYS" COLUMBIA PLANOGRAPH co. WASHINGTON, D. c.

J. P. BOYD. TIRE UPSETTER AND SHRINKER. APPLICATION FILED FEBJS, 1912.

1,090,681., Patented Mar. 17, 1914.

3 SHEETS-"SHEET 3.

IIIIIIII/I ATTORNEYS JAMES E. BOYD, or BIGELOW, ARKANSAS.

TIRE UPSETTER AND SHRINKER.

Specification of Letters Patent.

Patented Mar. it, rare.

Application filed. February 15, 1912. Serial No. 677,680.

To all whom it may concern:

Be it known that 1, JAMES F. Born, a citizen of the United States, and a resident of Bigelow, in the county of Perry and State of Arkansas, have invented a new and Improved Tire Upsetter and Shrinker, of which the following is a full, clear, and exact description.

My invention relates to an improvementin apparatus for upsetting or shrinking metallic tires intended for the wheels of vehicles, and it comprises a pair of upsetting blocks which are mounted to be moved toward and from each other, and which carry gripping meansfor engaging the edge of the tire to crowd or compress the body thereof together, and thus reduce the circumference of the tire to the required extent, and make it it more tightly upon the wheel. The blocks are positively operated to be moved toward each other to cause the grips to perform the compressing operation, and means are also provided to return them after the operation of gripping, to their original positions.

Reference is to be had to the accompanying drawings forming a part of this specification, in which the same characters of reference indicate the same parts in all the views.

Figure 1 is a top plan of my improved upsetting and shrinking device, showing the gripping blocks at the limit of their movement toward each other; Fig. 2 is an end view thereof; Fig. 3 is a transverse vertical section on the line 3-3 of Fig. 1; Fig. 4 is a longitudinal vertical section on the line l l of Fig. 2; Fig. 5 is 'a side view of the gripping blocks, showing the lever for returning the same to starting position; Fig. 6 is a top plan of the machine, showing the parts in position to begin the compressing operation; Fig. 7 is a longitudinal sectional view on the line 77 of Fig. 6; Fig. 8 shows a perspective view of one of the gripping blocks; Fig. 9 is a perspective view of the other gripping block; Figs. 10 and 11 are views of the grips which are mounted upon the gripping blocks to engage the tire; and Fig. 12 is a perspective view of a support or spacing block which is designed to be mounted upon the tops of the gripping blocks and form rests upon which the grips are placed.

()n the drawings, the numeral 1 represents a framework mounted upon suitable supports 2, and having a horizontal portion 3 secured to the sides of the main framework 1, by means of bolts 4. Upon this framework are carried the

gripping blocks

5 and 6, which have interfitting engagement with each other and are movable toward and from each other to compress the body of the tire which is to be shrunk.

The

gripping blocks

5 and 6 preferably have the shape shown in Figs. 8 and 9. The block 6 has at one end a raised portion formmg a rest or support 7, upon which a portion of the other block 5 is arranged to slide. The rest or support 7 has recesses in its upper edges at one end of the block 6, which are indicated at 8 and 9, and the bottom of the block 5 has corresponding project-ions 10 and 11 at its adjacent end to fit into the

recesses

8 and 9, these lugs serving to control rhe movement of the

blocks

5 and 6 toward and from each other. The block 6 further has a recess 12 arranged centrally thereof, and this recess 12 receives a vertical portion 13 of the block 5, the thickness of this vertical portion being considerably less than the length of the recess 12. so that the portion 13 of the block 5 can move back and forth therein. The block 5 further terminates in a projection 14:, which is rabbeted along one edge to form a shoulder 15, and the reduced extremity of the pro ection 14 passes through an aperture 16 in a projection 17 at the opposite end of the block One face of the vertical portion 13 of the block 5 may be provided with a shoulder 5', and the ends of this shoulder may be inclined, as shown. The inner face of the projection 17 will be recessed in a manner corresponding to the shape of the shoulder to receive the same. The presence of this shoulder and the recess receiving it is not essential and both may be omitted if desired.

The inner surface of the rest 7 and the adjacentsurface of the vertical section 13 of the block 5 have recesses '18 therein to receive wearing pieces 19. These wearing pieces are engaged by the ends of a cam 20 formed upon an operating shaft 21; and when this cam is turned, the vertical section 13 of the block 5 will be forced away from the rest 7, and over toward the projection 17 at the opposite end of the block 6, to cause the body of the tire to be compressed. The shaft 21 is mounted in hearings in the main frame 1, and carries adjacent one end a miter gear 22, which is engagedby apinion 23 keyed upon a shaft 24. The pinion 23 is located adjacent one end of the shaft 24 which is mounted in bearings 25 supported by brackets 25 connected to the framework 1 in any required manner; and it also carries a ratchet wheel 26 operated by means of a lever 27. This lever 27 carries a springpressed pawl 28, which engages the ratchet wheel as the lever 27 is moved downward.

The teeth on the gears 22 and 23 are large and heavy, and the shaft 21 will be mounted in roller bearings carried by the frame at its end adjacent the gear 21, and in bear ings formed of ant-i-frlction metal at its 0pposite end.

The top of the projection 17 from one end of the block 6, has overhanging portions 29, located on either side of the block and extending toward the rest 7. These overhanging portions terminate in guiding lugs 30, which extend past shoulders 31 in the block 5, these shoulders being located at the inner end of a trapezoidally shaped recess 32 in the top of the block 5. The guiding lugs have shoulders at their inner ends, as shown in Fig. 9, and the space between the guiding lugs 30 communicates with a trapezoidally-shaped recess in the top of the block 6, similar in all respects to the recess 32 in the other block.

The numeral 33 represents a depression 111 the bottom of the recess 32, between the shoulders 31, and in this recess fits a plate 34, this plate normally extending from the inner edge of the recess 33, across the cen tral recess 12 in the block 6, to the edge of the recess 35 in the end surface of the block 6, when the

blocks

5 and 6 are forced together. The plate 34 is secured to the block 5 by means of screws which pass into apertures in the bottom of the recess 33, as shown in Fig. 8.

The numerals 36 represent a pair of porting blocks having perforated lugs 37 extending from one end. These blocks have their lateral edges converging to enable them to fit into the

recesses

32 and 35, and their upper surfaces are concave to enable them to fit the curvature of a tire to be shrunk. When in position, the wide ends of these blocks, as well as the longer of the two parallel sides of the

recesses

32 and 35, will lie adjacent each other, and the inner ends of the pieces 36 will fit against the shoulders 31 in the block 5, and the shoulders at the inner ends of the guiding lugs 30 of the gripping block 6.

Upon the blocks 36 I place the gripping pieces 38. These gripping pieces are in the form of flat plates having one end rabbeted and having a lug 40 at the other end, and a lug 39 on one side adjacent the rabbeted portion aforesaid. The other side of the gripping pieces has teeth or serrations 41 formed thereon. These gripping pieces are so shaped that when they are mounted upon the gripping blocks, 5 and 6, their rabbeted ends will rest against the shoulders 31, and the shoulders atthe inner ends of the guiding lugs 30; and the serrated portions 41 of the several blocks will be opposed to one another, as shown particularly in Fig. 6. The tire to be shrunk is shown at 42, and when the tire is in position to be worked by the machine, it will lie between the edges of the gripping pieces 38 on which are formed the serrations or teeth 41,-and be engaged along its opposite edges by these gripping pieces. V

One end of the block 5 has lugs 43 on either side. These lugs 43 are connected by means of springs 44 to lugs 45 projecting from the frame 1. The opposite end of the block 6' has projections 46, and from these projections extend longitudinal bosses'which are surrounded by spiral springs 47 fitting in recesses 48 in the framework 1. The

springs 44 and 47 move the

blocks

5 and 6,

respectively, in opposite directions. When the cam 20 is turned from vertical to horizontal position, the

blocks

5 and 6 are forced together. After passing horizontal position the springs again move the

blocks

5 and 6 apart. Should, however, the

springs

44 and 47 fail to have this effect, I movethe blocks away from each other to their original position, by means of a lever 49. This lever49 is pivotally mounted 011 the framework 1,

and is connected by a link 50 to the block and a. link 51 to the block 6. When moved from full-line position to dotted-line position, referring to- Fig. 5, the lever 49 acts to move the blocks away from each other. The side of the block 5 may have a recess 50 to receive the link 50.

52 is a lug carried by the frame 1 adjacent the center of the apparatus, and on this lug is pivotally mounted a locking lever 53. This locking lever has a projection 54, which presses down upon the tire 42, and holds it in a given position. The outer end of the lever is receivedbetween the arms of a plvoted yoke 55, mounted in a lug 56, op-

posite the lug 52. The arms of the yoke 55 r have apertures t-herethrough, and through these apertures passes a pin 58, which is arranged to engage the upper edge of the lever 53, and lock this lever .and the tire on which it presses in position.

WVhen the parts are assembled, the .guiding lugs 30 of the block 6 will pass between the shoulders 31 of the block 5, to insure that the blocks will always be in line with each other when the tire is being worked. The outer 7 ends of these lugs will of course'be arranged to clear the inner ends of the gripping pieces 38, carried by the block 5; and when a tire is put in position, this tire will rest upon the top ofthe supporting pieces 36, between the gripping pieces 38, and be engaged by the teeth or serrations 41 on the four gripping pieces along its opposite edges, to be compressed by crowding the metal of the body of the tire together whenever the block 5 moves toward the block 6. The movement of the blocks toward each other is obtained by pressing down upon the lever 27. This will rotate the shaft 24, and through the gearing 22 and 23, the shaft 21, turning the cam 20. As this cam rotates it will enage the wearing pieces 19 and force the vertical portion 13 of the block 5 away from the rest 7 of the block 6.

The gripping pieces 38 are designed for tires which are to be shrunk while hot, and the tire will of course be handled with pincers to bring every part of it in turn in position to be engaged by the gripping pieces 38, until it has been compressed over its entire circumference. For cold work I may employ a gripping piece 59 having the same general shape as the gripping pieces 38, and provided with a perforated ear 60 at one end and a serrated portion 61.

It is to be understood that the embodiment of my invention shown in the accompanying drawings and described herein is intended as illustrative only, and I do not wish to be restricted to the details thereof, except in so far as is indicated by the accompanying claims.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent:

1. In a tire shrinker and upsetter, the combination of a pair of movably-mounted members having opposed surfaces, gripping means carried upon said members to engage the body of a tire to be shrunk and compress the same, means engaging the opposed surfaces of the members to move the same to cause the gripping means to compress the tire, and means engaging said members to move the same in the opposite direction.

2. In a tire shrinker and upsetter, the combination of a pair of movably-mounted members, gripping means carried by said members to engage and grip the body of a tire and compress the same, means for moving said members in one direction, means for moving said members in the opposite or return direction, and a lever for returning said members in the opposite direction in case the first-named returning means fails to operate.

3. In a tire shrinker and upsetter, the combination of a pair of blocks, one of said blocks having a rest at one end and a projection at the opposite end, the said rest and the said projection being separated by a recess or depression, and the other of said blocks being received by said recess and having a portion supported by said rest on the first block, the said block also having a guide which passes through an aperture in the projection at the other end of said first block.

4:. In a tire shrinker and upsetter, the combination of a pair of movably-mounted members each having a recess therein, said recesses having shoulders, gripping means carried in said recesses and engaging said shoulders, to grip the body of the tire and compress the same, and guiding lugs carried by one of said members and extending from the shoulder-forming portions of said member past the shoulder-forming portions of the other member.

5. In a tire shrinker and upsetter, a pair of movable members having opposed surfaces, each of said members carrying gripping devices to engage a tire and compress the same, a shaft having a double cam thereon to engage said opposed surfaces and move the members to cause the gripping devices to make their working strokes.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JAMES F. BOYD.

Witnesses:

W. E. Guam, 1?. S. BODDEKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.