US116818A

US116818A - Improvement in electro-magnetic car-brakes

Info

Publication number: US116818A
Authority: US
Publication date: 1871-07-11
Anticipated expiration: 1888-07-11

Description

ing parts.

J NITE fifi HENRY S. DAGGETT, 'OE LA FAYETTE, INDIANA.

Specification forming part, of Letters Patent No. 116,818, dated July 11, 1871.

To all whom it may concern:

Be it known that l, HENRY S. DAGGETT, of La Fayette, in the county of Tippecanoe and State of India-na, have invented a new and useful Im.- provement in Electric Carlrake, and l do hereby declare that the followin g is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this speciiication.

My invention consists in improvingcar-brakes, as hereinafter fully described and subsequently pointed out in the claim.

1n the accompanying drawing, Figure 1 represents a sectional side view of a railroad car, showing the mode of applying the brakes. Fig. 2 is a vertical crosssection of Fig. l taken on the line .w .n i

Sii nilar letters of reference i1 i dicate correspond- A represents the car, B, the wheels; C, the brakes. l) are the brake-bars, which extend transverselyy across and under the car, each with a brake or shoe on each end. These bars are suspended by means of hooks from the bottom or lower portion of the car. The shoes are drawn in contact with the wheels, so as to pro! duce the necessary friction for braking up the train by the levers E, which are connected with the central brake-bars by the rods F F, andwith the bars at the ends of the car by short screweyes G. The levers E are connected by chains H H to the transverse shaftl. (See Fig. 2.) This shaft is supported by the hangers J and K. It passesthrough a box in J, which box is hung on pivots which allow the shaft to vibrate. In the hanger K the shaft is confined in a slot, L, andthe vibration allows this portion of the shaft to move from the bottom to the top of the slot. M is a pulley on this shaft, andNis a belt which passes from the pulley N to a pulley on one of the car-axles, as seen in Fig. 1. Then this belt is drawn tightly the shaft l is revolved. The chains H H are so connected with the shaft that when it revolves they are both wound around it, and the two levers E are drawn together, which applies the brake. It will thus be seen that to apply the brake the belt must be tightened so as to revolve the shaft I. This I do by means of electricity supplied from a battery on the bagga ge-car or tender, or in any convenient posit-ion on the train, so that the fireman or engineer can apply the brakes throughout the whole train by simplypulling a cord or wire so as to connect the conducting-wires with the poles of the battery. O represents the conductingwire, which is supported by stands l) where it is insulated by the non-conductors lt. S is the magnet connected with the conducting-wire O, as seen in Fig. 1. The magnet is supported from the bottom of the ar over the end of the shaft I, and so as to attract and raise that shaft from the bottom to the top of the slot L. This action of the magnet tightens the belt which revolves the shaft'and applies the brake. T is a weight on the outer end of the shaft- I for balancing the shaft or supporting a portion of its weight. The brake is disonga ged by breaking the connection with the battery.

It is not deemed necessary to show a battery or mode of making or breaking the connection with it. u i

The system of brakes here shownkniay be eX- tended throughout the ent-ire train. The conducting-wires may be so connected from one car to another that they will pull apart when the cars are separated.

' Having thus described my invention, I claim as new and desire to securezby Letters Patentl. The magnet S, combined with a brake-shaft, I, working in the slotted bearing K L, to raise or allow the shaft to fall, as and for the purpose speciiied.

2. A fast pulley, M, on the rotary brake-operating shaft I, combined with a fast pulley on one of the car-axles, and a belt, N, upon and be tween them, tightened to enable the car-axle to apply power to the brake mechanism, and loosend we'th is ntse v Witnesses: H. S. DAGGETT.

MARK J oNns, S. T. STALLARD.