US717632A - Pinch-bar. - Google Patents

Description

PATENTED JAN. 6,1903.

M. A. SHELDON.

PINGH BAR. APPLICATION FILED SEPT. 13, 1902.

UNITED STATES MARK A. SHELDON, OF DETROIT, MICHIGAN.

PiNCH-BAR.

SPECIFICATION forming part of Letters Patent No. 717,632, dated January 6, 1903.

Application filed September 18, 1902. $erial No. 123,216. (No model.) i

To all whom it may concern:

Be it known that 1, MARK A. SHELDON, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Pinch-Bars, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to that type of carmover commonly known as pinch-bar and used for shifting cars and locomotives by hand; and the invention particularly refers to improvements on the pinch-bar for which Letters Patent No. 335,389 were granted to me heretofore.

The present invention has for its object to improve the construction of various parts thereof, whereby its efficiency and durability are increased, while at the same time its weight and cost of manufacture are reduced, all as more fully hereinafter described, and more specifically pointed out in the accompanying drawings, in which Figure 1 is a side elevation; Fig. 2, a bottom plan of the handle portion detached; Fig. 3, an enlarged side elevation, partly in section, showing the device as in operation; Fig. 4, a side elevation of the fulcrum portion detached; Fig. 5, a bottom plan of Fig. 4. Figs. 6, 7, and 8 are cross-sections on lines 6 6, 7 7, and 8 8 of Fig. 1, respectively. Fig. 9 is a perspective view of the lower end of the handle portion; and Fig. 10 is a cross-section on line 10 10, Fig. 3.

A represents the operating-lever or handle portion of the pinch-bar, composed of a long arm CL and a short arm or nose (1', provided at the end of the nose with a wearing-plate b, of hard steel or other suitable material.

0 represents the fulcrum portion of the pinch-bar pivoted with its rear end to the handleportion A by a bolt c7. and carrying the fulcrum 6, preferably formed by a rectangular bar of steel. This fulcrum portion G is bifurcated and straddles the lower end of the handle portion A and the nose a; A lifting or working nosefis formed on the end of the fulcrum portion'and provided witha removable steel plate g. The handle portion A above the pivot-bolt is formed on both sides with cars It, adapted to bear against the under side of the rearwardlyextending arms a of the fulcrum portion 0 when the handle portion in the operation of the pinch-bar has been fully depressed.

In practice the pinch-bar is placed upon the rail under the car-wheel, the nose fbeing pushed under the face of the wheel, while the handle is held elevated to enter the nose at thereof between the arms 2' of the fulcrum portion. Then upon depressing the handle portion the nose f is first brought into contact with the periphery of the wheel, and

thence turning upon the pivot d the nose a of the handle portion is brought against the face of the wheel. The pinch-bar being new further depressed operates upon the face of the wheel at two points by means of the noses at and fand produces a jointturning and lifting force capable of pushing the heaviest loaded car along the track with great facility. The cars 72. form stops which prevent the fulcrum portion from dropping down when the pinch-bar is carried around and also prevent the handle portion from being depressed too far.

The foregoing description contains nothing new beyond What is shown and described in the aforesaid Letters Patent, and I will now proceed to describe in detail the subject-inatter of my presentinvention, which has reference to the construction of the handle portion of the pinch-bar and to that of the fulcrum c. a

The handle portion, which is integrally cast in one piece, is formed with a tapering tubular long arm a, which in casting it is given a substantially trough-shaped crosssection and is also provided with an interior central rib is, which, as shown, extends through a portion of the long arm in line with the short arm and forms a continuation of the short arm into the long arm a. After casting it in this manner of malleable iron the open ends formed by the flanges l are then bent inwardly and closed up, as shown, to give it the desired tapering tubular shape, for a portion of its length at least. Within a short distance of the hole for the fulcrumbolt d the central rib and the flanges Z are united by cross-webs m, and the flanges Z are continued a slight distance beyond and form the ears h, which constitute stops for the handle portion. By constructing the handle portion in this manner great strength is combined with lightness and at the same time the most desirable configuration is given to said handle portion, which enables the operator to use and handle the device with greater ease than heretofore.

The feature of novelty as to the fulcrum 6 consists in making the same sidewise removable instead of endwise, as heretofore. This is accomplished by forming upon the under .side of the fulcrum portion a V-shaped recess closed at the ends and adapted to form a bearing for two sides of the rectangular bar of steel of which the fulcrum e is formed. In this recess the fulcrum e is removably held by a short leaf-spring 11, secured in a recess on the under side of the nose of the fulcrum portion C and bearing with its free end against the adjacent side of the fulcrum e in such manner as to press it into its recess. To prevent any accidental displacement, a small lip 0 may be formed adjacent to the recess, and to facilitate removal of the steel e when desired a headed pin 19 is placed beneath the spring at right angles thereto and adapted to lift the spring by pressing against the projecting end of the pin suflicient to permit the removal of the steel for the purpose of reengaging itanew to present a new corner after the one exposed has become inoperative by wear. In the former construction where the fulcrum e was secured endwise removable in a socket it was apt to become fast in the socket by rust; but the present construct-ion obviates this, and the operator without the use of tools or loss of time can without much delay secure a new bite for the fulcrum whenever it becomes necessary.

Having thus fully described my invention, what I claim is- 1. In a car-mover an operating lever or handle portion integrally formed of malleable iron with a short arm or nose, along arm cast in the shape of a trough and formed tubular for a portion of its length at least by the edges of the trough being bent inwardly, and with a central interior rib extending at least through a portion of the long arm adjacent to the short arm, said short arm being in line with and forming a continuation of said rib.

2. In a car-mover, an operating lever or handle portion integrally formed of malleable iron with a short arm or nose and a long arm cast in the shape of a trough with a central longitudinal rib in line with and forming a direct continuation of the short arm into said long arm, said long arm made rounding for a portion of its length at least by the edges of the trough being bent inwardly and closed over the rib.

3. In a car-mover, an operating lever or handle portion integrally formed of malleable iron with a short arm or nose and a long arm cast in the shape of a tapering trough with a central longitudinal rib in line with and formin g a continuation of the short arm extending for some distance at least into the long arm and further united thereto by cross-webs at or near the junction with the short arm, said long arm formed rounding for a portion of its length by the edges of the trough being bent inwardly and closed together over the rib.

4. In a car-mover, an operating lever or handle portion integrally formed of malleable iron with a short arm or nose, a long arm cast in the shape of a tapering trough which for a portion of its length at least is closed up and made rounding by the edges being drawn together, and with a centralinterior rib extending at least through a portion of said long arm adjacent to the short arm, said short arm forming a continuation of said rib beyond the end of the long arm.

5. In a car-mover comprising a fulcrum portion and a handle portion operating as described, the handle portion integrally cast of malleable iron and formed with a short and a long arm, the long arm being cast troughshaped with a central interior rib extending at least through a portion of the long arm adjacent to the short arm and in line therewith and united to the walls of the trough by crosswebs near the junction with the short arm, the walls ofthe trough extending beyond said cross-webs and forming stops for the fulcrum portion.

6. In a car-mover comprising afulcrum portion and a handle portion operating as described,the combination with the fulcrum portion, of the rectangular fulcrum-block, the V- shaped bearing in the under side of the fulcrum portion adapted to seat the fulcrumblock cornerwise, and a clamping spring pressing against one of the exposed sides of the fulcru m-block and removably holding the fulcrum-block against its bearings.

7. In a carmover comprisingafulcrum portion and a handle portion operating as described,the combination with the fulcrum portion of the rectangular fulcru m-block e, the V- shaped bearing for said block in the under side of the fulcrum portion and adapted to seat the block cornerwise and prevent endwise removal, the spring n recessed into the under side of the fulcrum-block and pressing with its free end upon one of the exposed sides of the f ulcrum-block and the headed pin 10 for raising the spring out of engagement with the fulcrum-block.

In testimony whereof I affix my signature in presence of two witnesses.

MARK A. SHELDON.

Witnesses:

OTTO F. BARTHEL, OLIVER E. BARTHEL.

IZC

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