US17738A - Tjpsettiktg tires - Google Patents

Description

UNITED STATES PATENT OEETCE.

ROCKWELL HAZEN AND YOLNEY GIBBS, OF HOMER, MICHIGAN.

UPSETTING- TIRES.

Specification of Letters Patent No. 17,738. dated July 7, 1857.

To all whom it may concern.'

Be it known that we, RooKwELL HAZEN and VoLNEY GIBBs, of Horner, in the countyT of Calhoun and State of Michigan, have invented a new and lmproved Device for Upsetting Circular Bars of lron, as Wheel- Tires, and also for Upsetting Straight Bars; and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure 1 is a longitudinal vertical section of our improvement (x), (x), Fig. 3, showing the plane of section. Fig. 2 is a transverse vertical section of ditto (y), (y), Fig. 3, indicating the plane of section. Eig. 3 is a plan or top view of ditto.

Similar letters of reference indicate corresponding parts in the several figures.

Our invention consists in the employment or use of two jaws and a clamp, arranged and operated as will be hereinafter fully shown and described, whereby the iron bars may be upset in an expeditious and perfect manner.

The invention is particularly applicable to the upsetting of tire for wheels, whereby the same may, when of too great diameter, be shortened without cutting and rewelding.

To enable those skilled in the art to fully understand and construct our invention, we will proceed to describe it. j

A represents a fiat bed or plate, which may be constructed of cast-iron and supported a suitable height by pedestals (a).

On the upper surface of the plate A, guides (b) are placed, between which ledges on the underside of blocks B, B, are fitted and allowed to slide freely. To the back sides of the blocks B, B, inclined oblique projecting ledges (d), are formed. These edges extend from the top to the bottom of the blocks and are tted in oblique grooves (e), which are made in a sliding late C, which is operated or moved up and own by means of a screw D, the lower end of which passes through a projection on the lower end of the sliding plate. The upper part of the screw passes through the center of a curved bar E, which has a screw-thread cut on it, in which the screw D works.

F represents a plate which is attached permanently to the bed A. This plate has a slot (g), made longitudinally through it, and a head G is placed on this plate, the lower end of the head having a tenon on it, which tenon is tted in the slot (g). The head G is allowed to slide freely on the plate F and is moved back and forth by a screw H, which passes through an upright (h), attached permanently to the plate F. The inner side of the head G has a vertical dovetail projection (t) on it, and a curved plate l is secured to the head G by having ledges (j) formed on the back side of said plate; the dove-tail projection being fitted between the ledges, which form a dove-tail recess.

To the ends of the plate F and directly between the two blocks B, B, an upright (lc), is secured. This upright has a vertical dovetail projection (Z), on it, and a curved late J is fitted or secured to said upright by iaving ledges or cleats (m) attached to or formed on the back side of said plate J. The

late J is curved so as to correspond enltirely with the plate l, as plainly shown in The blocks B B are attached to or formed on horizontal plates (a), which are in the same plane with the plate F. These plates (n), are slotted longitudinally .as shown at (0); three parallel slots are shown in each plate but more or less may be employed as desired. In the outermost slot of each plate (n), two upright heads K, K, are fitted. The inner sides of these heads are grooved vertically and a wedge L, is fitted in the grooves between the two heads on each plate (n). The innermost head K, on each plate (n), has a vertical knife or a sharp-edged jaw (p), attached, and a corres onding knife or jaw (g) is placed on each b ook B, near its outer end. These knives or jaws are fitted in dove-tail grooves formed in the blocks and heads so that they can readily be removed when necessary. It will be seen by referring to Fig. 3, that knives or jaws (q), are placed on the jaws B, B, directly opposite to the knives or jaws (p).

The operation is as follows: Suppose a tire is to be u set. The thinnest portion of the tire whiclli is shown in red Eig. 3, is heated and placed between the two curved plates l, J, the heated portion being at the centers of the plates. Ihe plate I is then moved up to the tire a requisite distance by turning the screw H. The wed es L, are then driven downward and the ves or jaws (f p) are forced toward the tire, and both knives (p), (g), are forced into the tire. These knives serve as clamps or jaws, and they are beveled on their outer sides only.

The blocks B, B, previously to the clamping of the tire are distended or forced outward by depressing or forcing down the plate C, by turning the screw D; and when the tire is clamped by the knives or jaws (p), (g), the blocks Vare forced together by raising the plate C; the blocks being moved as described in consequence of the oblique projections (d) fitting in the oblique recesses or'grooves (e), in the plate C. As the blocks B, B, are

forced together or toward each other, theA Vplacing the heads K, in the inner slots (o),

short bars may be upset. I

We do not claim upsetting iron tire, or other bars, or rods, by means of sliding blocks B, B, which are made to move toward and from each other, the blocks being so connected with the tire, rod, or bar, as to upset or contract it as they are forced toward each other; for blocks thus operated have been previously used on what is known as R. W. Gates Machine. In this machine, however, the sliding blocks are actuated directly by a right and left screw, and the objection to this mode of operating the blocks is this: If the threads of the screw are made fine, to economize power,

they will soon "stripf or wear out, on account of thepressure or strain to which they are subjected while upsetting the iron; and if the threads be made sufficiently coarse to render the screw durable, great power is required to operate the machine. In our improvement the power of the screw D, being transmitted to the blocks B, B, through the medium of the oblique ledges (d) and groove (e), the thread of the screw may be made of any proper size and the speed of the blocks regulated as desired, by giving the ledges (d) and grooves (e) a greater or less inclination commensurate with the power required, and the required strength of the screw, D.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is:

The sliding blocks B, B, with knives (p), (il), attached, and the heads L, L, tted in s ot's in the plates (n), to which the blocks B, are attached the inner blocks (lc), having knives (p) attached, which knives are actuated by the wedges L; the above arts being used in connection with the p ates l, J, and the whole combined and arranged as described, for the purpose set forth. It being understood that we do not claim separately either of the parts described, but the whole when arranged to operate conjointly as specified.

RocKwELL HAZEN. voLNnY enses.

Witnesses:

C. W. STRONG, P. S. WILSON.

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