US358654A - Automatic elevator-gate - Google Patents

Description

2 Sheets-Sheet 1.

(No Model.)

G. T. FALLIS. -AUTOMATIO ELEVATOR GATE.

Patented Mar. 1,1887.

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WITNESSES:

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GEORGE T. FALLIS, OF ST. JOSEPH, MISSOURI.

AUTOMATIC ELEVATOR-GATE.

SPECIFICATION forming part of LettersPatent No. 358,654, dated March 1, 1887.

Application tiled May 1'29, 1886. Serial No. 203,606.

To all whom it may concern:

Be it known that I, GEORGE T. FALLIS, of St. Joseph, in the county of Buchanan and State of Missouri, have invented a new and Improved Gate for Elevators. of which the following is a full, clear, and exact description.

The object of myinvention is to provide a new and improved gate for elevators which is simple and durable in construction.

The invention consists of a sliding gate hung on ropes having weights, of a device for rais ing the weights, of a device for locking the gate in an open or a closed position controlled by the movement of the clevatoncarriage, and of the construction for securing the gate in the guides.

The invention also consists of various parts and details and combinations of the same, as will be fully described hereinafter, and then pointed out in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a perspective View of an elevator-shaft provided with my improvement, showing the gate raised and closed. Fig. 2 is a front elevation of the same, showing the gate lowered and open. view of the guide and part of the gate on the line a: a: of Fig. 2, and Fig. 4 is a perspective view of one of the tripping-blocks attached to the elevator-carriage.

The elevator-shaft A is provided at the opening on each floor B with a gate, 0, having the top and bottom rails, G and O, which are flattened on each end, and are connected with each other by the vertical end bars, 0", which slide in the guides D, secured to the shaft A, and having slots D, through which pass the flattened ends of the rails O and G". The gate G is provided with the intermediate rods or pickets (3*, or may be provided with wire-netting instead of the pickets 0. As the guides D are tubular and the slots D are narrower than the end bars, 0 the gate is thus prevented from being sprung out of the groove.

To the upper end of each of the vertical bars Fig. 3 is a sectional plan (No model.)

C is attached one end of a rope, E, which passes over a pulley. E, mounted in the upright A of the shaft A, and carrying on its other end a weight, F, which isa trifle heavier than the gate 0, and has, therefore, atendency to lift the gate 0 upward. To each weight F is also secured the end of a rope, G, which passes over pulleys H and under a doublegrooved pulley, I, mounted in a framehaving a handle, I, and the ropes pass then upward and are secured to the ceiling.

The upper and lower ends of each of the bars 0 are provided with notches or teeth 0 which engage with the bell-crank lever J,fnlcrunied in a bracket, K, attached to the side beam of the shaft A below the floor B. The

teeth C at the upper end of the bars 0 face oppositely to those on the lower end. The upper end, J, of each bell-crank lever J is provided with a frictioirroller, L, and the lower arm, J, is provided on its lower end with a spring-catch, J". The ends'of the upper and lower arms, J and ,J", engage with the teeth 0 through apertures formed in the guides D.

Each side of the elevator-carriage is provided with a tripping-block, M, (shown in Fig. 4,)having the inclines M and Mhwhich come in contact with the friction-roller L on the bell-crank lever J when the elevator carriage is ascending or descending.

The operation is as follows: The gate is held in its closed normal position, as shown in Fig. l, by the weights F,which are heavier than the gate 0, and the latter is held locked by the upper ends of the arms J of the hell-crank levers J engaging the teeth in the lower parts of the vertical bars G. Then the elevator-carriage ascends or descends the tripping-blocks engage the frictionrollers L, and move the upper arms, J, of the bell-crank levers J outward,so as to disengage the teeth C on the vertical bars 0, while the spring-catches J at the lower ends of the lower arms, J", permit the same to have reduced frictional contact with the vertical bars 0 The operator in the elevator then pulls on the handle I, so as to lift the weights F, whereby the gate 0 descends and frees the opening to the carriage ata level with the floor B. The lower spring ends, J, of the bell-crank lever J engage with the teeth parts of the vertical bars 0 formed in the upper ends of the vertical bars 0 as shown in Fig. 2, andthus hold the gate locked in its lower or open position. If it is not desired to open the gate, then the levers J simply swing back when the carriage passes, but the gate remains in position. As soon as the elevatorcarriage again ascends or descends its tripping-blocks depart from the friction-wheels L, whereby the heavier upper arms, J, of the bell-crank levers J fallinward, and thus disengage the spring ends J from the teeth on the upper ends of the vertical bars 0 The gate 0 then ascends by the action of the weights F to its normal position, and is locked by the arms J of the bell-crank levers J engaging with the teeth 0 on the lower Thus the gate closes automatically, but must be opened at will by hand. The end bars, 0 may extend above the gate 0 sufficiently to be pressed downward by hand, so as to bring the gate to the tloor-level,thus dispensing,if desired,with

the ropes G and pulleys H and I.

Having thus described myinvention,what I claim as new, and desire to secure by Letters Patent, 'is- I 1. In a gate for elevators, the combination of a vertically-sliding gate with ropes and weights,which ropes are passed over end pulleys and connected to the weights, said ropes also passing over additional pulleys and under an intermediate pulley having a handle, substantially as and for the purpose setforth.

2. In a gate for elevators, a vertically-sliding gate having vertical end bars and guides in which slide the end bars, in combination with ropes and weights counterbalancing the gate, a rope for lifting the said weights, and a device for locking the gate controlled by the action of tripping-blocks attached to the elevator-carriage, substantially as shown and de scribed.

3. In combination with a gate for elevators, the double-armed trip-levers J, the upper arm terminating in a pawl adapted to engage a notch in the end bar, 0 and to lock the gate when closed, and the lower carrying a springcatoh, J adapted to engage a notch in the end bar to hold the gate when lowered or open, the upper arm carrying also a pin or frictionroller operated by trip-blocks on the elevatorcarriage to unlock the gate, substantially as described.

4. In a gate for elevators, the gate 0, provided with the end rods, 0 having the teeth 0 in combination with the bell-crank levers J, having the arms J and J and provided with the friction-rollers L, operated by tripping-blocks M, attached to the elevator-carriage, substantially as shown and described.

5. In a gate for elevators, the gate 0, having the vertical bars C and the stationary guides D, in which slide the vertical bars or rods 0 in combination with the ropes E, passing over the pulleys E, the weights F, attached to the said ropes E, the ropes G, attached to the weights F, and the pulley I, having the handle I, substantially as shown and described.

6. In a gate for elevators, the gate 0, provided with the rods or bars 0 having teeth 0 the ropes E and G, the Weights F, and the stationary guides D, in combination with the bell-crank levers J, having arms J and J", and the friction-rollers L, attached to the arms J, and operated by the tripping-blocks M, fastened to the side of the elevator-carriage, substantially as shown and described.

GEORGE T. FALLIS.

I Witnesses:

THos. B. WEAKLEY, ISAAC H. GASTON.

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