US296605A

US296605A - Roller-grip for cable railways

Info

Publication number: US296605A
Authority: US
Publication date: 1884-04-08
Anticipated expiration: 1901-04-08

Description

(No Model.)

2 Sheets-Sheet 1.

w. H. PAINE.

ROLLER GRIP FOR CABLE RAILWAYS.

Patented Apr. 8, 1884.

H; PErERs. Pnwov-uxmgn her. Wmmon. Dc.

(No Model.) 2 Sheets-Sheet 2.

W. H. PAINE.

ROLLER GRIP FOR CABLE RA-ILWAYS. 4 No. 296,605. Patented Apr. 8, 1884. Y

N. PETERs PMO-Lilhcgraphzr. WashEng'Qu. n. c.

I UNr'rnn STAT S PATENT Orrrcso \VILLIAM H. PAINE, OF

BROOKLYN, NEW YORK.

ROLLER-GRIP FOR CABLE RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 296,605, dated April 8, 1884.

Application filed August 31, 1883. No model.)

To all whom, it may concern:

Be it known that I, WILLIAM HENRY Pnnvn,

a citizen of the United States, residing at Brooklyn, in the State of New York, have invented certain new and useful Improvements in Grips for Cable Railways, of which the following is a specification.

My invention relates'to an improvement in roller-grips for cable railways in which the gripping-rollers,whenbrought in contact with the rope, run thereon without friction, and are gradually locked to start the car, the griprollers continuing to turn until the car is in full motion at the same speed as the cable. By this means the car is started gradually without jerking, and friction between the rope and grip is avoided, the friction being wholly between the grip-rollers and the looking mechanism, by which their rotation is gradually retarded during the starting of the car. Letters Patent No. 173,329, granted to me on the 8th day of February, 1876, describe a device for accomplishing this purpose, and my present invention relates to improvements in the mode of mounting, operating, and locking the gripping wheels orrollers.

In the accompanying drawings, Figure 1 is aplan of the apparatus. Fig. 2 is a side elevation, partly in section. Fig. 3 is an end elevation. Fig. 4 is a transverse section on the lines 4,1?ig. 1.

Horizontal gripping-rollers 1 1, with flanged or concaved peripheries, are each journaled between a pair of levers. 2 2, suspended from the bottom of the car in position to engage the cable 3.

Fulcrumed to the ends of the levers 2 is a lever, 4, pivoted at5 to a block, 6, sliding on a connecting-bar, 7 which is bolted to the ends of the levers 2*. The sliding block 6 is formed with an internallyscrew threaded lug, 6, through which passes an adjustingscrew, 8, whose inner end revolves freely in a lug, 7, formed on the bar 7. The levers 2 2, carrying the griprollers, are by this means held at the proper distance asunder to engage or retain the rope, any wear being taken up by the ad justment of the screw 8. The end of the opcrating-lever 4 may beconnected to an endless rope passing over drums at either end of the car, operated by the hand-brake Windlass, as I have described in a contemporaneous application; or the said lever may be adjusted by hand.

9 9 are jointed locking-levers fulcrumed to the levers 2 2 at 10 10, respectively, and carrying shoes 9 9, bearing outward against the inside of the rims of the grip-rollers 1 1, which are made dish-shaped, or with spokes on one face only, so as to permit the bent lever 9 9 and the shoes 9" 9 to work within them, as illustrated in Fig. 2.

Bolted to the locking lever 9 is a connecting-bar, 11, which carries a sliding block, 12, havinga lug, 13, through which passes an adjusting-screw, 14-, whoga other end revolves in a lug, 11, on the lever 11, similarly to the adjusting-screw 8, already described in con nection with the main levers 2 2.

Pivoted to theblock 12 at 15 is a bent lever, 15, whose shorter end is fulcrumed at 16 to a similar bent lever, 16, whose shorter end is fulcrumed at 16 to the other locking-lever, 9. The longer ends of the levers 15 16 are connected to the oppositely-moving portions of an endless rope, 17, as fully set forth in the application above referred to. This construction is such that when the levers 15 16 are separated, as represented by dotted lines in Fig. 1, and the lever 4 in the position shown in full lines, the cable 3 will be held between the rollers 1 1, while the latter run freely I thereon, so as not to impart motion to the car. The first movement of the levers 15 16 toward one another will cause the locking-beams 9 9 to be quickly drawn together, thus placing the shoes 9 9 in contact with the grippingrollers 1 1, and a continuation of such movement, the fulcrum-

points

15, 16, and 16 having been brought nearer in line, will cause the ends of said levers to press the lockingshoes in contact with the rollers with any necessary force. 7

The levers 2 2 and locking-beams 9 9 may be so adjusted by the screws 8 14, respectively, that the foregoing result may be accomplished by very slight movements of the operatinglevers.

I To insure the stopping ofthe car or train of cars at the station, and avoid danger of their being carried too far, the lever 4 projects beyond the side of the car, and is tripped at the proper distance from the end of the route. by a projection from the bed of the track, or other automatic means resulting in combination, with the lockingshoes mounted the certain and instantaneous detachment of the car from the cable.

In practice the levers 2 .2 are extended, as indicated at 2 and 2"", to carry a second pair of gripping-rollers, similar to those shown at 1 1, the other extremities of the said levers being suspended from the car-body by lugs, similar to those shown at 18 on the levers 1 1, and connected by a similar bar, 7, lever 4, and their described accessories, or being pivoted to the body, as preferred. The

members

2 and 2" are connected bya knuckle-joint, to,

bending freely outward, but inflexible in the other direction, so that the bar 7, lever 4, and their connections may draw the entire lever 2 2 toward the lever 2 2 as one rigid member, but on the release of the connections 4 7 will instantly relievethe pressure of the rollers 1 I on the cable, the lever 2 turning on the joint 00 and carrying with it the fulcrum 10 of the locking-lever 9. The locking-shoes of the second pair of rollers are connected to duplicate locking-levers 9 and 9*, the levers 9 and 9 being jointed together at 16 to the lever 16, and the levers 9 and 95 being jointed together to a connecting-bar, 11, common to both, as clearly shown in Figs. 1 and 2.

Having thus described my invention, the

following is what I claim as new therein and desire to secure by Letters Patent:

1. The combination, with a roller-grip for cable railways, of locking-shoes mounted on suitable beams,'and bearing outward against the interior of the rim of the grip-roller, substantially as described.

2. In a roller-grip for cable railways, the combination of apair of levers0ne fulcrumed on the otherand locking-shoes moved by the said levers in opposite directions, substanumnmmtially as set forth.

3. In a roller-grip for cable railways, the

on suitable levers, of a system of levers flexibly connecting said locking-levers, and having means for adjustment, as described.

4:. In a grip for cable railways, the combination, with the gripping-rolls mounted in a pair of levers fulcrumed to the bottom of the ism, substantially as described, for adjusting,

the levers carrying the rollers to and from each other, for the purposes set forth.

6. In a roller-grip for cable railways, the combination, with a pair of gripping-rolls mounted in a pair of levers, of a pair of le vers fulcrumed to the ends of the aforesaid levers, and connected together through the medium of a sliding block mounted on one of the levers, and carrying an adjusting-screw having a fixed bearing in a lug on the other one of said levers, as and for the purpose specified.

-7. In a device for gripping a moving rope or cable, a pair of gripping rolls or sheaves, and a locking device applied to one or more of the said gripping rolls-orsheaves at a point or points nearer the moving rope or cable than the axles of the said gripping rolls or sheaves. 8. In a roller-grip for cable rail\vays,means for applying locking-pressure to one or more of a pair of gripping rolls or sheaves at a point or points nearer their opposing surfaces than are their axles.

WILLIAM H. PAINE.

Titnesses:

BERNI-IARD G. LINGEMAN,

ERNEST AUKENER.