US404500A - pendleton - Google Patents

Description

(No Model.) J. H. PENDLETON, A. BRYSON, Jr., 0. TIERS 8u L. MOSS. BNDLESS BELT FOR GRIPS FOR'GABLE RAILWAYS.

No. 404,500. Patented June 4., 1889.

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N. PETERS. PhaltrLthogr-Aphnr, Washington, n.6,

UNITED' STATES vPATENT OFFICE.

JOI-IN H. PENDLETON, OF BROOKLYN, AND ANDREV BRYSON, JR., CORNELIUS TIERS, AND LINCOLN MOSS, OF NEIV YORK, ASSIGNORS TO THE RAPID TRANSIT CABLE COIWIPANY, OF NEW YORK, N. Y.

ENDLESS BELT FOR GRIPS FOR CABLE RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 404,500, dated June 4, 1889.

Application led November 13, 1888. Serial No. 290, '740. (No model.)

T0 all whom. it may concern.-

Be it known that we, JOHN H. PENDLETON, of Brooklyn, in the county of Kings and State of New York, and ANDREW BRYsoN, JR., CORNELIUS TIERS, and LINCOLN Moss, ot the city, county, and State of New York, have invented an Improvement in Endless Belts for the Grips of Cable Railroads, of which the following is a specification.

In an application for patent for grips'for cable railways, filed July 2l, 1888, by J. H. Pendleton, A Bryson, Jr., and Cornelius Tiers, Serial No. 280,658, there is shown and described, but not of itself claimed therein, an endless belt against which the cable is pressed when the grip is clamped to the cable.

The present application for patent relates to the construction of said endless belt.

,The object of our present invention is to provide an endless belt for a cable-grip which will not injure the cable by contact therewith, and which in its turn will not be rapidly Worn and injured by the cable. We accomplish this by making the endless belt of a band or bands of leather, or leather and canvas combined, or of canvas alone, or of a steel band` or bands, havin-g blocks of leather or other yielding material secured thereto for the cable to come into contact with. Said blocks form the outer portion of the belt, and each block is composed of a number of pieces of leather or other yielding material riveted together and placed upon the band or body portion of the belt, so that the end grain of the leather or theedges of the strips of yielding material form the outer face of each block. The end grain of the leather gives a yielding surface, in which the cable embeds itself when the grip is applied; but thissurface is not quickly worn by .the contact of the cable. The outer faces of the blocks are grooved in line with each other, so that there is a nearly semicircular groove extending entirely around the belt, and the cable occupies this groove in the portion of the belt that is below the supporting-drums of the belt when the grip is applied, and said groove prevents the cable moving sidewise in the grip. The back of the endless b elt is provided with metal plates y to protect said back from wear against the stationary portion of the grip.

In the drawings, Figure l is an elevation of the'endless belt and its supporting-drums and a portion of the grip. Fig. 2 is a section at the line a; .fr of Fig. l. Fig. 3 is a longitudinal section of a portion of the belt. Fig. 4 is an elevation of one of the metal plates for the back of the belt. Fig. 5 is a crosssection. Fig. 6 is a longitudinal section, and Fig. '7 an elevation of modifications in the belt.

As this endless ,belt is especially designed for usewith a grip for cable railways, we have shown said belt in connection with a cablegrip, so that the object of the peculiar construction of the belt will be fully understood; but we remark that said belt may be used with other forms of grip than thatrepresented inthe drawings, and that it may be used for other purposes than in a cable-grip.

The body portion f of the endless belt may be a chain, or it may be of wire ropeor of a single thickness of leather or of canvas, or a steel band or bands may be used; but we prefer that it be made of two or more thicknesses of leather with a band of canvas f5 between each two thicknesses of leather.

f4 are the blocks which form the outer portion of the endless belt. Each block is composed of a number of layers of leather, or of leather and rubber canvas alternating with the leather. These layers arecut out by a suitable cutter to the proper shape, and then the desired number of layers are brought together and secured by rivets f8.

The blocks f4 are placed upon the' band f side by side with a slight space between the blocks, and the layers of leather or other material f 12 stand crosswise of the belt, as shown in Figs. 2 and 5, and upon `their edges, as seen in Figs. 3, 6, and 7, so that the end grain of the leather will be at the outer surfaces of the blocks and form yielding and elastic surfaces for the endless cable C to come in contact with.

The blocks ft* are connected to the band f by the same pins or rivets f6 that connect the metal plates f7 to said band. These metal plates fT form the back or inner portion of the endless belt, and they are preferably of malleable cast-iron, and there is one of these metal plates at the back of the band f immediately opposite each block f4, the plates and blocks being of the samelength and breadth. Each plate has four pins f, that maybe east With said plate, and these pins are passed through holes made in the band f and in the blocks f4, and the ends of said pins f are spread or riveted up, as shown, after the pins have been passed through the band and block, so that they iirmly secure both the plate and the blocks to the band.

Each block f4 has a nearly-semicircular groove in its outer face, and this groove is central of the block and longitudinally of the belt, so that a groove is formed that extends entirely around the belt of blocks. y This groove may be formed in the blocks by a suitable cutter before the blocks are secured to the band f; or the layers of leather forming the blocks may be cut With the proper opening to form the groove when the layers are put together. The endless belt, when used with a grip like that shown in said 4application Serial No. 230,65S, is mounted upon drums f f on shafts f2 f 2, and the belt is to be put in motion when the grip is to be applied, so as to have the endless belt inc ving at about the same surface speed as the traveling1 cable, as set forth in said application, and to which application reference is hereby made for a more detailed description of the operationA of the grip and belt.

`When the cable O is lifted by the hook cl3 of the moving part of the grip, said cable is brought into contact with the grooved portion of the endless belt and lifts the belt as it travels below the drums, so that the back of said belt is brought into contact with and slides on the shoe Z5, secured to the stationary part c of the grip. The endless belt continues to move with the cable until its motion is arrested by the pressure of the back of the belt against said shoe, caused by the hook d pressing against the cable, and the latter in its turn pressing the belt against the stationary shoe Instead of riveting up the ends of the pins f to secure the block f4 and plate fT to the bandf, the same result may be accomplished by passing a wire f3 through each two pins f*i and through the block f4, as shown in Fi g. 5, the ends of the Wires being bent over outside the block to confine them in place. By

this arrangement a block f1,if injured, can be quickly removed by simply withdrawing the wires j, and then removing said block from the pins fi t To prevent the blocks fAl being' spread by the pressure of the cable, each block maybe inclosed at its sides by a metal case f, said case heilig secured to the block by screws or by the pins j, that may pass also through said case and be bent down outside thereof.

In Fig. G We have shown metal bandsf9 as forming part of the body portion f ot' the endless belt. These bands are preferably of steel, and when these bands are at the inner portion of the belt, as shown, the plates f7 are dispensed with.

IVe claim as our inventionl. The combination, with the band f, forming the body of the belt, of the blocks f4, of

vlayers of leather or similar material, secured to the same and forming the outer portion of the endless belt, substantially as and for the purposes speciiied.

2. The combination, with the bandf, forming the body portion of the belt, of the blocks f4 upon the outer portion of the band, metal plates at the inner part or back of said band, and means for securingthe blocks and plates to the band, substantially as set forth.

The combination, with the band f and blocks f* upon the outer portion of the same, of the metal plates f7 at the inner part of said bandf, and pins passing through the band and 'blocks for securing the plates and blocks to the band, substantially as set forth.

a. The combinatiomwith the band j', blocks f4, and plates f7, having pins passing through the band and blocks, of Wires f, passing through said pins and blocks, substantially as and for the purposes set forth.

5. The combination, with the bandf, blocks 4, and plates f7, having pins passing through the bandv and blocks, of the metal case j around the sides of each block, substantially as specified.

G. The combination, with the band f, forming the body portion of the belt, of the blocks f4 upon the same, each block being composed of layers of leather or other yielding material riveted together and secured to said band with the layers perpendicular to the band, substantially as and for the purposes set forth.

7. The combination, with the endless band f, forming the body portion of the belt, of metal plates fT at the inner part of said hand, and blocks f4, of leather or similar material, upon the outer portion of said band, each block having a semieircular groove in its outer face, substantially as and for the purposes set forth.

Signed this 10th day of November, ISSS.

J. Il. PENDLETON. ANDRET IERYSON, Jn. CORNELIUS TIERS. LINCOLN MOSS. Tituessesz Guo. T. PINCKNEY, WILLIAM G. Mori?.

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