US937749A - Die for pressing wheels and like shapes. - Google Patents

Description

A. K. ANDREWS. DIE FOR PEESSING WHEELS AND LIKE SHAPES.

Patented Oct. 26, 1909.

Hamwfi H main/sews UNITED STATES PATENT o FIoE.

AARON K. ANDREWS, OF BURNI'IAM, PENNSYLVANIA, ASSIGNOR TO THE STANDARD STEEL WORKS COMPANY, OF BURNI-IAM, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

DIE'FOR PRESSING WHEELS AND LIKE SHAPES.

Specification of Letters Patent.

Patented Oct. 26, 1909.

Application filed October 7, 1908. Serial No. 456,618.

To all whom it may concern:

Be it known that I, AARON K. ANDREWS, a citizen of the United States, residing in Burnham, Pennsylvania, have invented certain Improvements in Dies for Pressing Wheels and Like Shapes, of which the following is a specification.

My invention relates to certain improvements in apparatus for pressing, dishing and truing car wheels, although the invention may be used for pressing other shapes if found desirable. I

The main object of the invention is to improve the construction of the dies so that the wheel blank, after being pressed,can be readily removed from the dies; and a further object is to provide means to make that portion of the die, which forms the rim of the wheel, detachable so that sections of different contour can be readily applied.

In the accompanying drawing :Figure l, is a vertical sectional view of the mechanism for pressing a car wheel and illustrating my invention, the dies being shown closed; and Fig. 2, is a View similar to Fig. l, with the upper die removed and the ring die lowered so that the wheel can be readily removed from the lower die.

A is the base.

B is the lower die mounted on the base and secured thereto by T-headed bolts (1 adapted to slots 1) in the lower die and to undercut slots a in the base A.

B is a detachable rim section of the lower die B, being held from turning on the die B by a series of pins 6. The rim section B is shaped to conform to the rim 0 of the wheel blank 0 while the upper portion of the lower die is shaped to receive the hub a and to shape the web 0 of the wheel blank to give it the proper dish.

D is the upper die having a rim section D shaped to conform to a portion of the rim of the wheel and secured to the die D by a series of clips 03 having pins 01, one pin entering a cavity in the die D and the other entering a cavity in the rim section D. The underside of the die D is shaped to receive the projecting portion of the hub 0 and also shaped to dish the web 0 E is a ring die extending entirely around the lower die B slightly beveled at e to give the proper shape to the tread of the wheel and notched at the upper end to true the flange of the wheel. The die E has a rim 6 and surrounding the die is a ring E recessed to receive the rim 6. Pins f extend into the ring E and the ring is suspended from chains F linked to the pins 7 so that the ring die E can be raised in position and held there until the blocks 9 are placed on the base A under thering E, as indicated. These blocks have handles g so as to provide an easy means for placing the blocks in position or removing them from under the die.

Inthe present'instance the wheel blank is first pressed into approximate shape between suitable dies, then it is taken to the rim rolling machine and the rim 0 rolled to the proper contour, but it is impossible to make the rim absolutely cylindrical by rolling and my improved dies are for the purpose of not only dishing the wheel but also truing it by forcing out the rim against the ring die so as to make the tread of the wheel absolutely cylindrical. The web of the wheel, when mounted on the die B, is flat, the blank being introduced into the dies while hot so that on the movement of the die D the web 0 of the wheel is dished, as shown in Fig. 1, and the rim 0 is forced into the ring die E and expanded by the upper and lower dies, so as to bring all portions of the periphery of the wheel blank in contact with the ring die, making the tread of the wheel absolutely true. During this process the ring die E is held in its raised position by the blocks 9, but as soon as the wheel blank has been pressed the upper die is raised and the blocks 9 are removed from under the ring die E, which then falls, resting upon the base A. This will bring the upper surface either on a line with or below the lower edge of the rim 0 of the finished wheel, so that either with a slight hammering or prying the wheel can be readily removed from the lower die.

If it is desirable to change the rim sections B, D of the dies toconform to the shape of other forms of wheels, the change can be quickly made by simply detaching the clips d and the pins 7), removing the, rim sections from the dies and substituting others for them.

i I claim 1. The combination in dies for pressing wheels and the like, of an upper die, and a lower die for pressing the body portion of the wheel, with a vertically movable ring die encircling the lower die and, when raised, forming a die against which the tread of the wheel is pressed, said ring die being capable of being lowered to expose the tread of the wheel and to allow for the ready removal of the wheel.

2. The combination in dies for pressingwheels, of an upper die, a lower die for pressing the body portion of the wheel, a

vertically movable ring die encircling the encircling the lower die and forming the die for the tread of the wheel, blocks for holding the ring die in its elevated position, aring engaging the ring die, and chains connected to the ring for lifting the ring and the ring die so as to allow the blocks to be placed under the ring die.

4. The combination in dies for pressing flanged wheels, of an upper die and a lower die for pressing the body portion of the:

wheel, a vertically movable ring die encircling the lower die and recessed at itsupper edge to receive the flange of the wheel, and means for retaining the ring die in its raised position to form a die' against which the tread of the wheel is pressed, said die being capable of being lowered to clear the flange and expose the tread of the wheel.

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

. AARON K. ANDREWS.

Witnesses: r

J. IRA MUssE J. S. YOUNG.

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