US244597A - James b - Google Patents

Description

(No Model.)

J. B. HAM-B-LIN. APPARATUS FOR STRAIGHTENINGY RAKE TEETH.

Patented July L9, 1881.

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" UNITED- ST TES PATENT OFFICE.

JAMES B. HAMBLIN, OF J AGKSON, MICHIGAN, ASSIGNOR OF ONE-HALF TO WILLIAM L. HOBART, OF SAME PLACE.

APPARATUS FOR STRAIG HTENING RAKE-TEETH.

SPECIFICATION forming part of Letters Patent No. 244,597, dated July 19, 1881.

Application filed April 21, 1881. (No model.)

To all whom it may concern:

Be it known that I, JAMES B. HAMBLIN, of Jackson, Jackson county, Michigan, have invented an Improvement in Machines for Straightening Cast-Steel Rakes, of which the following is a specification.

The nature of this invention relates to the construction of a deviceparticularly designed for pressing and straightening the teeth of cast-steel garden-rakes; and the invention consists in the peculiar construction and arrangement of the various parts, all as more fully hereinafter set forth.

Figure 1 shows the upper and lower diesin their relative positions as when attached to a power-press. Fig. 2 is a cross-section of the same.

In the accompanying drawings, which form a part of this specification, A represents a bedpiece, of cast-iron, and is fastened by bolts passing through slots a, therein to the base of the power-press, the slots allowing of adj ustment.

B is a dowel-plate, of wrought-iron.

O is the lower die-plate, of cast-steel, and is fastened to the bed-piece A, together with dowel-plate B, by the bolts a passing up from the bottom of the bed-piece A.

D represents a series of small dies in front of the die-plate (J, and they are held in place by dowels or pins 0 passing downward through tenons d of the dies into the bed-piece.

E is a wing-die, similarly secured to place,

' the movement of the win g-die being limited by the pin 0, while the movement of the dies D is limited between said wing-die and the projectionf of the bed-plate.

An arm, F, projects from the front of the bed-plate, to which-arm is secured the comb G.

A recess, H, is formed in the bed-plate A, immediatelybeneath the dies D, through which the-scale pressed from the rake falls, and in each end of the die is formed a'flaring slot, I,

1 to receive the tang or shank of the rake while being pressed.

The upper die or head-piece is bolted to the working head of the power-press by bolts 9 passing through the plate J.

the back of the teeth as possible. can nowbe introduced, one between each of To the lower face of the plate J are attached the steel dies K and. L, the latter one being adjustable, shim-pieces M of the desired thickness being interposed between them. The die tending below the face of the die, is bolted at its upper end to the vertical spring-arm O of the adjustable arm P.

In practice the parts are properly secured to a power-press, the spring-blade B being in such a position that it will impinge, in descending, against the outer face of the wingdie E, which is beveled upon such outer face, as at h, thereby causing such wing-die E to be pressed laterally the desired distance. I

, The rake to be operated upon is heated at little more than half its length, andvis placed flatwise upon the lower die, with the shank downward and in the slot 1, as shown in dotted lines, Fig. 1, and one operation of the upper die is given upon it, so as to bring all the teeth operated on to the same horizontal plane. When this is done, and should the teeth be too crooked to be introduced between the dies D,they can easily be straightened by drawing them through'the comb G, beginning as near The teeth the dies D and a. Sin gle downward movements of the press being given, the springR, descend ing, will, by striking the wing-die E, exert a lateral pressure upon the dies D, forcing them toward the rigid proj ectionsf, and thereby flatten the teeth inserted between them to any desired degree, and at the same time the face of the die K will straighten the back of the rake edgewise. I

Byheating the remaining portion of the rake, reversing its position, and repeating the oper ation above described the other portion of the rake may likewise be straightened.

What I claim as my invention is 1. In a device for straightening and press ingrake-teeth, the swaging-dies D, in combination with the wing-die E and spring It of the upper die, substantially as described.

4. A device for straightening and pressing rake-teeth, consisting of the bedpiece A, dies 0 D E K L, andeoinb G, arm F, spring R, slot I, and recess H, substantially as and for the purposes described.

JAMES B. HAMBLIN.

Witnesses:

SPENCER GALKINS, LEWIS D. WELLING.

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