US403184A - Territory - Google Patents

Description

(No Model.)

P. G.-FORRESTER.

PINGH BAR.

No. 403,184. Patented May 14, 1889.

- INVENTOR,

UNITED STATES PATENT ()FFICE.

PETER O. FORRESTER, OF WVILKESON, WASHINGTON TERRITORY.

PlNCH-BAR.

SPECIFICATION forming part of Letters'Patent No. 403,184, dated May 14, 1889.

Application filed March 8, 1889.

To all whom it may concern.-

Be it known that I, PETER O. FORRESTER, of Wilkeson, in the county of Pierce, Territory of Washington, have invented a new and useful Improvement in Pinch-Bars, of which the following is a full, clear, and exact description.

This invention relates to pinch-bars mainly designed for moving or starting cars on railroads; and it consists in a speciallyconstructed adjustable fulcrum-piece made of or pointed with steel, that will not slip on the rail when the latter is made either of Bessemer or other soft steel or of iron, and that can be readily adjusted or be removed, sharpened, and replaced; also, that will strengthen the bar at the place of its greatest strain, and can be applied to the ordinary form of pinchbars now in use.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 represents a side elevation of the pinch-bar with its adjustable and removable fulcrum attachment applied to a car-wheel upon the rail of a railroad-track. Fig. 2 is a side View, upon a larger scale, of the forward portion of said bar with its fulcrum piece or attachment. Fig. 3 is a transverse section of the same upon the line 00 0c in Fig. 2, looking toward the front end of the bar; and Fig. 4 is a view similar to Fig. 2, showing a modified construction of the fulcrum piece or attachment.

Referring in the first instance to Figs. 1, 2, and 3 of the drawings, A is the bar proper, which may be in the form of an ordinary pinch-barthat is, of straight or tapering construction'in direction of its length, without intermediate crooks or projections, and that may be made of or pointed with steel at its nose end I), which bears upon the wheel B of the car to start or move the latter upon the rail 0.

D is the fulcrum piece or attachment of the bar, which bears upon therail. This at tachment is made in the form of a sliding block with an aperture or slot in it adapted to receive the bar A freely through it, and preferably having an extended base to form an enlarged bearing upon the under side of Serial No. 302,481. (No model.)

the bar A. It is made with a sharp tooth, c, on its under side and forward end, and is constructed of or pointed with steel to take a firm bite into or hold on the rail, so that it will not slip on the rail when the whole device is in use. Said fulcrum attachment may be readily slipped off the bar when it is required to sharpen it and may as readily be replaced, and when in position it will strengthen the bar at' the place of its greatest strain, the bar not requiring to be punctured or cut away to receive it. It may be fastened, when adjusted to its required position along the bar, by a set screw, d, passing through its top or one side and bearing down on the bar, or any other suitable and ordinary clamping or securing meanssucl1, for instance, as a wedge or ferrule, or both combinedmaybe used in place of the set-screw d, it only being necessary that the securing means, whatever it may be, can be operated conveniently to facilitate the adjustment or removal of the fulcrum-piece and hold it when adjusted on or along the bar firmly and secure.

- In Fig. 4 of the drawings, the tooth c of the fulcrum piece or attachment, instead of being made integral with the slotted and sliding block D, is constructed of a separate piece bent and sharpened to form the fulcrum, said piece being of, the same width as the bar A and held in position by clamping it to the bar within the slotted body of the sliding block.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The combination, with the pinch-bar proper, A, of the slot-ted and slidable fulcrum piece or attachment D, in block form, adapted to freely receive the bar A through it, and provided with a sharp tooth, c, on its under side pointed with or formed of steel, and means, substantially as specified, operating from the exterior of the bar to clamp or hold the fulcrum piece or attachment to its place of adjustment upon the bar, essentially as and for the purposes herein set forth.

PETER O. FORRESTER.

Witnesses:

OHAs. L. MANSON, W. W. Fonnnsrnn.

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