US739782A - Elevator safety device. - Google Patents

Description

No. 739,782. 1 PATENTED SEPT. 22, 1903.

G. HAIL.

ELEVATOR SAFETY DEVIGE.

APPLmA'rxoN FILED JUNE 25, 1903.

N0 MODEL.

by the attendant on the car.- no

V UNITED STATES .Patented September 22, 1903.

' PATENT OFFICE.-

EL EVATO R SAFETY DEVICE.

SPEGIFIGA'IION forming part of Letters Patent N 0. 739,782, dated September 22, 1903.

Uriginal application filed November 13, 1902, Serial No. 131,096. Divided and this application filed June 25, 1903. Serial No. 162,985. (No model.)

To all whom it may concern:

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

This invention has relation to door-controlled elevator safety appliances of the type including a lock for preventing the movement of a car when a door is open, and has for its object the provision of supplemental means for Withdrawing the lock to an inactive position to permit a movement of the car while a door remains open-as, for instance, when the lock has moved to active position by the opening of a door remote from the car and it is necessary to release the lock in order to raise or lower the car to permit the attendant to close said door.

To this end the invention consists of the ing drawrngsfiescribed in the following specitication, and pointed out in the appended claims.

Referring to said drawings, Figure 1 representsa series of landing-doors opening into.

a well, a car, a valve-lever, door-controlled locking mechanism therefor, and supplemental means for freeing the lever from the lock. 7 Fig. 2 represents in perspective view the On the drawings, a a indicate the landing doors, which are normally closed, and b the elevator-car.

'0 indicates the rope, which may be actuated line 0 is connected to the lever 01 of the ordinary valve mechanism, (indicated at e in Fig. 3.) By raising or lowering the line the lever d may be shifted to cause the admission of fluid into the hoisting mechanism or tocut ofi the supply therefrom in the well-known way.

The locking mechanism, by which the lever d may be held against movement, includesa member f, (which for convenience in nomenclature maybe termed a bolt, although by lmprovements illustrated by the accompany-- The rope or that term there is no intention of limiting the member to any particularform or shape.) This bolt is reversible from end to end and is mounted in guides f on asupportiug-plate P. This bolt is caused to engage a locking member on the lever at when any one of the doors a is opened. For this purpose the lever (1 is provided with a bow at, having a notch d to receive the end of the bolt and with inclined surfaces 61 The notch is wide enough to allow the slight relative movement of the lever which is necessary to permit the requisite loose or idle movement of the valve when it is in a neutral position. When the bolt is projected and the lever is out of neutral position, the swinging of the lever-upon its fulcrum toward neutral or central position will force the bolt gradually backward until its end registers with the notch in the member d, whereupon the bolt will snap forward and enter the notch, as will be explained.

Pivoted upon the plate f is a T-shaped lethe pivot or fulcrum for which is indicated at g. One arm 9 projects downwardly between twostnds f f on the bolt, while to another arm g 'is connected the lower end of a line h, which extends upward through the well and is connected at its upper end to one arm of a three-armed lever 11. tioned lever 21 is pivoted at 11 to a bracket t and it has an arm i with a weight .6 adjvustably secured thereto. This weight .71 is sufficient to overbalance the line It, the T- shaped lever g, and the weight g, carried thereby, and to move the bolt ,7 to inactive position, as shown in Fig. 1. The lever :i is further provided with a third arm i adapted to play between stops i on the bracket 2?.

When the line 71 is pulled downward, the weight g swings the lever 9 about its ful- (arms and forces the bolt f yieldingly forward to active position, so as to engage the locking member on the lever d.- In proximity to ver 9,

This last-meneach door a there is a bell-crankj, flexibly .pivot and draw down the line it and permit the weight g to move the bolt to active position. I

Each door carries a projection lo, adapted to engage one arm of the bell-crank j and move it to the position shown in Fig. 1 so as to permit the weight 11 to raise the line hand swing the leverg into the'position shown. This particular form of operative means between the doors and the leverg is illustrated in Letters Patent No. 657,597, granted to Edward L. Hail and George Hail, September 11, 1900, and is not herein claimed as new;

In order to withdraw the bolt to inactive position either by the attendant on the car or by a person from any one of the landingdoors for the purpose hereinbefore described, the following mechanism is employed: A flexible line m is connected at its upper end to an eyebolt mat the upperend of the top of the elevator-Well, and it extends down from the well in position to be reached from any one of the landing-doors or from the car.

As Fig. l is a more or less conventional illustration of the doors and the car, the line is shown to one side to prevent confusion; but it will be understood that it may pass through the car, if desired.

The lowerend of the line on passes around a grooved pulley m and through an eye m and is attached to the rear end of the boltf. In virtue of this construction the attendant on the car or the janitor at any one of the landingdoors may draw upon the line on and retract the boltf, so that the lever d may be actuated tocause the car to travel upward or downward in the elevator-well. This is a desirable feature, for, as previously explained, a door might be accidentally opened While' the car is at rest' opposite another landing-door. So long as the door remains open it would be impossible tostart the car without sending some one to close it. With this construction the lever may be freed to permit the car to travel to the open door. This freeing mech- .anism is of great benefit to elevator repairers and janitors by enabling them to move the car from the car itself or from the landing, as they desire, while working upon or around the car, regardless as to whether the doors are open or closed.

The valve-lever may be referred to-as the fcontroller and the valve as the motorcontrolling mechanism, whereas the line m may be referred to as means operable independently of the means for'actuating the lock for rendering said lock inoperative or inactive. I

This is a division of application Serial No. 131,096, filed November 13, 1902.

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 it may be made or all of the modes of its use, I declare that what I claim is- 1. A safety appliance for elevators com prising a controller, motor-controlling mechanism to which said controller is connected, a car, a door, a locking device in juxtaposition to said motor-controlling mechanism, operative means whereby said locking device is actuated to lock the said motor-controlling mechanism when the door is open, and independent mechanical means for rendering said locking device inoperative.

Asafetyapplianceforelevatorscomprising a controller, motor-controlling mechanism to which said controller is connected, a car, a series of landing-doors, a locking device in juxtaposition to said motor-controlling mechanism, operative means whereby said locking device is actuated to lock the said motor-controlling mechanism when any one of said landing-doors is open, and means independentof the'aforesaid operative means, extending to the topmost landing-door and adapted to be operated to render said looking device inoperative.

4. Asafetyappliance for elevators comprising a controller, motor-controlling mechanism to which said controller is connected, a

car, a series of landing-doors, a locking device in juxtaposition to said motor-controlling mechanism, operative means whereby said locking device is actuated to lock the said motor-controlling mechanism when any one of said landing-doors is open, and means independent of the aforesaid operative means and adapted to be operated from any one of said landing-doors to render said locking device inoperative.

5. Asafety appliance for elevators comprising a car, a door, a controller, valve mechanism connected with the controller, a lock con taining a bolt, operative means whereby said bolt is actuated to lock the valve mechanism when the door is open, and means unconnected with and independent of the aforesaid operative means for moving said bolt to inoperative position.

6. A safety appliance for elevators comprising a car, a door, a controller, valve mechanism connected with the controller, a lock containing a bolt, operative means whereby said bolt is actuated to lock the valve mechanism when the door is open, and independent mechanical means for moving said bolt to inoperative position.

7. A safetyappliance for elevators comprising a car, a door, a controller, valve mechanism connected with the controller, a lock conunconnected with and independent of said actuating means and operable from the carfor moving said bolt to inoperative position. 9. A safety appliance for elevators comprising a car, valve mechanism, a lock therefor containing a bolt, a door, operative means whereby the said lock is actuated when the door is open, and means unconnected with and independent of the aforesaid operative means, connected to said bolt and adapted to be manipulated from the car. a

10. A safety appliance for elevators comprising a car, valve mechanism, a look therefor containing a bolt, a door, means whereby the said lock is actuated when-the door is open, and independent mechanical means connected to said bolt and adapted to be manipulated from the car.

11. A safety appliance for elevators commg a car, a door, a controller, valve mechan-' prising a car, valve mechanism, a look therefor containing a bolt, a door-actuating means whereby the said lock is actnated'when the door is open, and means in the well unconnected with and independent of said actuating means, connected to said bolt and adapted to be operated to move said bolt to inoperative position. I

12. A safety appliance for elevators comprising a car, valve mechanism, a look therefor containing a bolt, a door,actuating means whereby the said lock is actuated when the door is open, and independent mechanical means in the well, connected to said bolt and adapted to be operated from the car.

13. A safety appliance for elevators comprising a valve mechanism, a lock therefor containing a bolt, a landing-door, operative means whereby the said lock is actuated when the landing-door is open, and means in the well independent of the aforesaid operative means, connected to said bolt and adapted to be manipulated from the said landing-door.

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

GEORGE HAIL.

Witnesses:

I WALTER S. REYNOLDS,

THOMAS J. HALLER.

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