US327029A

US327029A - Pinch-bar

Info

Publication number: US327029A
Authority: US
Publication date: 1885-09-29
Anticipated expiration: 1902-09-29

Description

1-. J. SMITH.

PINGH BAR.

(No ModeL) Patented Set. 29, 1885.

Zv g'Zgaesses Md %WW Nirnn ST TES ,FREDRICK J. SMITH, OF CHICAGO, ILLINOIS.

PlNCH-BAR.

SPECIFICATION forming part of Letters Patent No. 327,029, dated September 29, 1885.

Application filed March it, 1885. (No model.)

To all whom i2: may concern:

Be it known that I, FREDRIOK J. SMITH, of Chicago, county of G ok, and State of Illinois, have invented certain new and useful Improvements in a Pinch-Bar, of which the following is a full, clear, and exact description that will enable others to make and use the same, reference being had to the accompanying drawings, forming a part of this specification.

Thisinvention relates to that class of pinchbars more especially intended to be used in moving railway-cars; and the same consists of certain novel features in the construction and combination of parts, as will be hereinafter more fully set forth.

Figure 1 is a view in perspective, showing a practical application of my device; Fig. 2, a vertical longitudinal section; Fig. 3, a horizontal longitudinal section in the plane 3 3, Fig. 2, Fig. 4, a view in perspective of a detachable fulcrunrblock, and Fig. 5 shows a detachable forked guide or guard.

Referring to the drawings, A represents the handle, and B the head end of the bar, both being forged in one solid piece. The toe a may be of the form or shape shown, or of any other form or outline that will afford a better result. The under side of the head is enlarged with a downward curve to form the heel a, and at the same time to give the bar the necessary strength required at this point.

The bar is provided with the recess C,which starts in from the under side of the head and passes upward until a sufficient depth is secured, and then stops short in the bar.

The fulcrum-block D is beveled at both ends to provide the sharp bitiugedge a", and is adapted to be inserted in the recess 0 in the manner illustrated in Fig. 2, one end of the block projecting far enough below the bar to form the fulcrum bearing or bite on the surface of the rail E.

The flattened head a of the guide or guard F is also adapted to be inserted in the recess 0, and bears against one side of the fulcrumblock, as shown in Fig. 2. The forked ends a a project downward and embrace each side of the rail, and serve to prevent the bar from slipping off from the rail as the car is moved forward and the bar shifted to a new position.

It is generally a well-known fact that it is a very ditficult matter to keep a pinch bar on the rail and obtain a bite quickly enough to prevent the car from running back, and thus losing a great part of the labor expended. By the construction and arrangement shown and described it is impossible for the bar to slip off from the rail, and the wheel of the car is closely followed and blocked against a back move ment.

The head of the bar is provided on one side of the recess 0 with the aperture b, which passes entirely through from side to side and opens into the recess. In this aperture is inserted the tapering locking-pin b. This pin is of a semicircular form in cross-section, and is inserted so as to bring the fiat side to bear against the flat surface of the fulcrum-block, I

and thus wedge the block and guide-fork firmly in place.

WVhen one end of the fulcrum-block has become dulled, it may be turned end for end, and if worn so as to be a little too short to do good service, the same may be lengthened by placing a lining or backing in the bottom of the recess. A numberof these fulcrum-blocks may be provided with each bar, so that a dulled one may be instantly replaced by a serviceable one and no time lost in waiting for a dull one to be dressed.

By this construction it will be observed that there is no strain on the locking-pin, but all strain must be on the bar proper and the fulcrum-point.

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

1. A pinch-bar consisting of a handle and an enlarged head forgedin one piece, and provided with a recess starting in from the under side of said bar and stopping short therein, substantially as and for the purpose set forth.

2. A pinch-bar provided in the head end with a recess starting in from the under side and an aperture passing through said head 9 from side to side and opening on one side into said recess, substantially as and for the purpose set forth.

3. The combination, with a pinch-bar provided with a recess starting in from the under side and an aperture extending clear through the head of said bar, of a fulcrum-b1ock removably inserted in said recess and a tapering pin having one side flattened and inserted in said aperture, whereby said fulcrum-block is locked in place, substantially as described.

4. The combination, with a pinch-bar provided with a recess and aperture, as described, of a fulcrun1-bl0ck, and a guide-fork removably inserted in said recess, and a locking-pin inserted in said aperture and bearing on one side against the flat surface of said fulcrumblock, whereby the latter and the guide-fork are firmly secured in place, substantially as and for the purpose set forth.

' 5. The combination, with a pinch-bar provided with a recess in the heel, of a guidefork having the flattened head end inserted in said recess,whi1e the forked ends extend down on each side of the rail, and the means de- 20 scribed for removably securing said guide-fork in relation to said bar, substantially as and for the purpose set forth.

FREDRICK J. SMITH.

\Vitnesses: I

L. M. FREEMAN, V. STANWOOD.