US729575A - Elevator safety device. - Google Patents

Description

V UNITED STATES Patented June 2, 1903.

PATENT OFFICE GEORGE HAIL, OF PROVIDENCE, RHODE ISLAND.

ELEVATO R SAFETY DEVICE.

SPECIFICATION forming part of Letters Patent N 0. 729,575, dated June 2, 1903.

Application filed July 28, 1902. Serial No. 117,272. (No model.) i

T0 at whom it may concern:

Be it known that I, GEORGE HAIL, of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Elevator Safety.

the locking device is in operative condition,

for providing for the adjustment of the looking device to accommodate more or less idle play of the valve, and to increase the general efficiency of such appliances.

Of the accompanying drawings, Figure 1 represents an elevator-well with a car therein and illustrates one embodiment of the invention. Fig. 2 represents a rear elevation of the controlling-lever, which illustrates the magnetically-actuated lock for said lever. Fig. 3 represents aside elevation of the same.

On the drawings, the elevator-well is indicated at a, and the doors,which open from the various landings of the well, are indicated at b 5 19 The car is indicated at c. It is equipped with the controlling-lever cl, which is connected bysuitable mechanism with the valve-wheel.

e e indicate the conductors of an electric circuit which includes a generator ofany suitable type. Ordinarily the lighting-circuit of the building may beemployed. The safetycircuit includes a conductorf, which extends by means ofacable to the car from the conductor e. The conductorfis electrically connected with alampf and also with the coils ofa solenoid or magnet 9, said lamp and coils being in series in the circuitf. There is also located in the said branch circuita press-button switch 71, which may be pressed inward to break the circuit and which when released will return automatically and close the circuit. v

Extending from the solenoid by means of a cable from the car there is a conductor 6, which extends up the well to the doorswitches.

The return-wire t" is connected to It has forits ob-- the conductor e. The door-switches are indicated as a whole at j j, and they are arranged in multiple with the conductors 2' 2" of the safety-circuit. Thus there is provided a safety-circuit including the door-switches in multiple and the solenoid, the lamp, and the automatic switch 71 in series.

Provision is made for the automatic looking of the lever d when one of the doors is open and the door-switch permitted to close the safety-circuit.

The door-switches-are conventionally illustrated as being provided with the springpressed lever 3' adapted to engage the stationary contactf when the door is open, said lever being provided with a projection in the path of the door. This mechanism is usually inclosed in a casing which is inserted in the door-jamb, with the projection 7' extending a short distance from the surface of the frame or jamb.

Referring now to the solenoid or magnet locking device, it will be observed that the magnet is mounted in a frame 9, attached to the wall of the car in such position that its core or armature g will be moved upwardly when the coil is energized to cause said core to engage catches of a locking member on the lever d. The upper end of the core thus be comes effective as a bolt for locking the lever 62 against movement. The catches or stops of the locking member on the lever are adjustable.

By reference to Fig. 2 it will be seen that there is secured to the rear face of the lever a plate at, having a slot d through which the attaching-screws d are passed and which permit the vertical adjustment of said plate. Attached to said plate are two stops or catches 61 d each of which has a curved slot d, through which attaching-screws d may be passed into the said plate 61.

By means of the elongated slots d the stops may be adjusted bodily in one direction or the other to accommodate variations in the normal condition of the valve or the controlling-ropes or may be moved toward or from each other to accommodate a greater or a lesser idle play of the valve-wheel. These lugs are positioned by the screws d and by lugs 01 on the plate d.

When the circuit is cut off from the solenoid and the core 9 is allowed to drop, it rests upon a bracket g placed beneath the frame g, as shown in Figs. 2 and 3.

The lamp f is employed for three different purposes-first, to illuminate the floor ofthe car at the doorway and the edge of the landing at which the car has been stopped when the landing-door has been opened; second, to indicate whether or not the locking mechanism is in operative condition, and, third, to act as a rheostat or resistance for the electric safety-circuit. The said lamp is preferably employed in a casingf which is glazed in its front, so that the rays of light may be directed to the floor of the car at the doorway and to the edge of the landing. The light permits the passenger to see whether or not the floor of the car is at a level with the door of the landing, and thus prevents a person from stumbling or falling by reason of the difference of level in the doors. If the safetycircuit is out of order, there will be no illumination from the lamp when the door is opened, and the operator will know at once of the condition of the apparatus.

The invention may be embodied in other forms without departing from the spirit and scope of the invention.

I may denominate the lever 01 as a controller for the valve, so as to include thereby other forms of controllers with which the bolt may cooperate in holding the Valve against movement.

I do not herein claim the lamp arranged to reflect its light upon the car-floor and the sill of the landing-door, matter of an application, filed March 11, 1903.

Having thus explained the nature of the invention and described a way of constructing and using the same, although without attempting to set forth all of the forms in which Serial No. M2222,

- it maybe made or all of the modes of its use,

I declare that what I claim isl. The combination with a car and a controller, of a door-governed locking device including a bolt, and an adjustable locking member on the ear connected to said controlas it forms the subject-- ler, with which the said locking-bolt may engage.

2. The combination with a car and a controller,of alocking-bolt governed by the doors, and a locking member on the car connected to said controller and including stops between which the bolt may enter, said stops being adjustable bodilyin one direction or the other,

to accommodate variable normal conditions of the valve or controlling apparatus.

3. The combination with a car and a controller,of a locking-bolt governed by the doors, and a locking member on the car connected to said controller and including stops between which the bolt may enter, said stops being adjustable toward and from each other and also bodily in one direction or the other.

4. The combination with a car and a controller-lever on said car, of a locking-bolt on said car and controlled by the doors, and stops on said controller-lever between which the bolt may enter, said stops being adjustable transversely of the path of movement of said bolt, to accommodate variations in the normal condition of the controlling apparatus and the valve.

5. The combination with a car and a controller, of a door-controlled circuit including an electromagnetic lock for said controller and also including a lamp on said ranged to illuminate the car-floor at the doorway, and the edge of the landing at which the car has been stopped.

6. The combination with a car and a controller thereon, of a door-controlled circuit including an electromagnetic lock on said car for said controller and including a lamp on said ear in series with said magnet, and arranged to illuminate the car-floor at the doorway, and the edge of the landing at which the car has been stopped, upon the opening of a door.

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

GEORGE HAIL.

vitnesses:

HENRY A. GREENE, A. ALLEN.

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