US700619A - Elevator signal device. - Google Patents

Description

No. 700,6l9, I Patented May 20, |902.

S. D. CLLETT.

ELEVATR SlGNAL DEVlCE.

(Application med Fab. 1o, 1902.)

(No Model.)

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UNITED Str-iras n'rnnrr OFFICE.

SAMUEL D. OOLLETT, OF NEV YORK, N. Y., ASSIGNOR TO ELEVATOR SUPPLY du REPAIR COMPANY, A CORPORATION OF ILLINOIS.

ELVATOR SIGNAL DEVICE.

SPECIFICATION forming part of Letters Patent No. l?OO,619, dated May 20, 1902.

Application filed February 10, 1902. Serial No. 93,300- (lIo model.)

T LZZ wtont t may conceive:

Be it known that 1, SAMUEL D. COLLETT, a

citizen of the United States, residing at Newl York, State of New York, have invented certain new and useful Improvements in Elevator Signal Devices, of which the following is a clear, full, and exact description.

Myinvention relates to a signal mechanism for elevators; and my object is to provide a device by which the starter may give a signal to the operator in any of the elevator-cars and independently of the other cars.

My invention will be defined in the claims.

The drawing shows diagrammatcally one embodiment of my invention.

In tall buildings provided with a number of elevators it is customary to have an attendant at the ground-iioor to tell the operator of the carwhen to start the same upward, so that the cars will run at regular intervals. It often happens, however, after a car has started or when a car is at the top of the shaft that the starter wishes to recall the car or hurry the car on its way, and it is desirable that the starter should be able to communicate with each car, so that he can control their movement after they have left the starting-floor. In the embodiment of my invention shown in the drawing I have provided an electrically-operated signal in each car and a relatively independent normally open signal-actuating circuit to each car and a normally open switch in each signal-circuit located at the lower floor, by which the starter may close any one of these circuits at will and give prearranged signals to the operator of any car, preferably whenever the car may be in the shaft at that time.

In. thepreferred embodiment of my invention illustrated in the drawing I have shown a building provided with only two cars; but it will be obvious that its chief application will be in Abuildings having a greater number.

1 and 2 are the elevator-cars at rest at the starting-oor,usually the ground-flour. Each elevator-shaft may be provided with lights 3 L1 or 5'6 outside of the :shaft on each floor, and alnormally open push-button switch 7 on each floor controls the circuits to these lamps.

A lamp 8 may be provided in cach car to signal the operator to stop at the floor the car is then approaching.

The brush i) and stationary contact-plates lO to 21 indicate part ofa com m utator mechanism, which may be located at any convenient place for changing the circuits and making and breaking connections, as is well known in the art. This brush 9 may be provided with contact-blocks 22 to 7, (indicated in dotted lines)and electrically con nected,as shown. This brush is moved over the stationary contact-plates 10 to 15 correspondingly with the movement of the elevator in the manner well known in the art. The plates 16 to 2l are understood to be provided with a similar brush moving correspondingly with the car 2.

28 is a suitable source of elcctromotive force-a batteryof a low electromotive force, for example.

2O is a mercury-pot, and 30 is a pivoted switch-finger which makes and breaks connection with the mercury.

3l is a spring-actuated pivoted releasinglever which normally holds the lever 30 in its raised position, as shown.

32 is an electromagnet for drawing lever 31 to the left to release lever 30, and 33 isa magnet for drawing down the left end of lever 30 to the position shown. lVhen the button 7 is pushed, the circuit through the coils of magnet 32 is closed, energizing said magnet and releasing lever 30, the end of which falls and dips into the mercury-pot, partially closing the lamp-circuits.

It will be understood that contact-plates and switch devices will be provided for each door; but I have in the drawing shown only vthose for one floor and which are used when the car is moving upwardly.

As the car l passes the third floor, for example, the contact- blocks 23 and 24 contact with the plates 11 and 12, and if the up button 7 on the fifth floor has beenvpushed a circuit will then be completed from dynamo 34 through up lamp 3,plates 11, 12, and 15, mercury-pot29, and lever 30 back to the dynamo. Contactplate will not be engaged by block 27 until the car has reached the fourth floor, when a circuit is closed from the dynamo through lamp S in the car, plate 13, blocks and 27,

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and plate back to the dynamo through the mercury-pot. This will light the lamp 8 and cause it to signal the operator to stop the car at the next iioor above. Block 26 contacts with plate 14 as the car starts to move away from the fifth lioor, at which the passenger has been taken on, and closes a circuit from batteryiS through a normally closed transfer-button switch 35, plate l0, blocks 22 and 26, plate li, and coils of magnet 33. This energizes magnet 33, raising lever from pot 29 and breaking the lamp-circuits. If the transfer-button switch vis opened before and until after plate 14C and block 2G are in contact, the circuit through the coils ofmagnet 33 will not be closed and the lamp-circuits through the mercury-pot will remain partially closed, as before, and as the commutators for the other cars are suitably crossconnected-for example, as shown-the up lamps G and 8' of the next following' car will be lighted as that car approaches.

39 represents a liquid or other indicator for each car at the starting-floor for showing the starter the position of each car at all times in its travel. It will be understood that any wellknown device may be provided for actuating the same.

In a building havinga large numberof cars a starting attendant is usually posted at the ground-floor to keep the cars running regularly, and it is desirable that he be able to communicate with each car operator independently of the others, preferably at all times, so that the starter can hurrya car down or recall it or start it from the top iioor, so as to keep the service uniform. In order to accomplish this, I have provided a signal on each car-such, for example, as a buzzer40- and a circuit to each, independent of the buzzer-circuits to the other cars, and means located at the starting-floor for controlling these independent circuits. In the embodiment of my invention shown in the drawing I have provided a connection 37 from battery 2S running to the starting-floor and branch circuits in parallel to each car through the buzzers therein. These relatively independent circuits preferably have in each a normally open spring-actuated push-button switch t at the starting-Hoor by which the starter may close any one of the buzzer-circuits, and thus operate the buzzer in any car at will and independently of the buzzers on the other cars. The buzzer is an audible signal, and the operator will therefore not confuse it with the signal-lamp 8, and his attention will be called by it whether he is in the car or not. The buzzer obviously makes the signal only so long as its circuit is closed. I preferably complete the buzzer-circuit back to the battery by tapping it into the transfer-button circuit, as shown, so that in this embodiment only one additional wire in each car-cable need be provided.

It will be obvious that many variations from the construction illustrated may be made without departing from my invention as claimed, and I therefore do not limit myself to the embodiment heretofore shown and described.

IVhat I claim isl. In a building having a plurality of floors in combination, a plurality of elevator-cars passing said floors, a relatively independent circuit to each car, a signal on each car controlled by the circuit to that car, and means located at the starting-floor and contro1- ling said independent circuits, whereby the signal on any car maybe operated from said floor and independently of the signals on the other cars.

2. In a building having a plurality of floors in combination, a plurality of elevator-cars passing said vfloors, a relatively independent and normally open circuit to each car, a signal on each car controlled by the circuit to that car and operative on the closing of its circuit, and means located at the startingiioor and controlling said independent circuits, whereby the signal on any car may be operated from said door and independently of the signals on the other cars.

3. In a building having a plurality of floors in combination, a plurality of elevator-cars passing said iioors, a relatively independent and normally open circuit to each car, a signal on each car controlled by the circuit to that car and operative on the closing of its circuit, and a switch in each circuit located at the starting-floor for closing said independent circuits, whereby the signal on any car may be operated from said tloor and independently of the signals on the other cars.

Ll. In a building having a plurality of iloors in combination, a plurality of elevator-cars passing said floors, a relatively independent and normally open circuit to each car, a signal on each car controlled by the circuit to that car and operative on the closing of its circuit, said signal being made only so long as its circuit is closed, and a switch in each circuit located at the startingf1oor for closing said independent circuits, whereby the signal on any car may be operated from said floor and independently of the signals on the other cars.

5. In a building having a plurality of iioors in combination, a plurality of elevator-cars passing said floors, a relatively independent circuit to each car, an audible signal on each car controlled by the circuit to that car, and means located at the starting-door and controlling said independent circuits,where by the signal on any car may be operated from said loor and independently of the signals on the other cars.

6. In a building having' a plurality of floors in combination, a plurality of elevator-ears passing said floors, a source of electromotive force, a relatively independent circuit to each car in parallel from said source of electromotive force, a signal on each car controlled by thc circuit to that car, and means located at IDO IIO

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the starting-Hoor and controlling said independent circ uits,whereby the signal on any car may be operated from said floor and independently of the signals on the other cars.

7. In a building having a plurality of floors in combination, a plurality of elevator-cars passing said floors, a relatively independent circuit to each car, a signal on each car controlled by the circuit to that car, and means located at the starting-floor and controlling said independent circuits, whereby the signal on any car may be operated from said door Wherever said cars may bein their travel and independently of the signals on the other cars.

8. In a building having a plurality of floors in combination, a plurality of elevator-cars passing said floors, a relatively independent circuit to each car, a signal on each car controlled by the circuit to that car, and means located at the starting-licei"7 and controlling said independent circuits, whereby the signal on any car may be operated from said iloor and independently of the signals on the other cars, and signal devices also at the starting-door automatically indicating the location of the dilerent cars in their travel.

9. In a building having a plurality of floors in combination, a plurality of elevator-cars passing said iioors, each of said cars being provided with a signalto indicate an intending passenger,l means located at different ldoors to cause said signals to be operated, a relatively independent and normally open circuit to each car, a second signal on each car controlled by the circuit to that car and operative on the closing of its circuit, said latter signal being made7 only so long as its circuit is closed, and means located at the starting-door and controlling said independent circuits, whereby a signal may be transmitted from said floor to any of said cars independently of the other cars.

l0. In abuildinghavinga plurality ol' floors in combination, a plurality of elevator-cars passing said floors, each of said cars being provided with a signal to indicate an intending passenger, means located at different floors to cause said signals to be operated, a relatively independent and normally open circuit to each car, a second signal on each car controlled by the circuit to that car and operative on the closing of its circuit, said latter signal being made only so long as its circuit is closed, and means located at the starting-floor"7 and controlling said independent circuits, whereby a signal may be transmitted from said ioor to any of said cars independently of the other cars, and signal devices also located at the starting-floor and Visible to the starter, for visibly indicating at all times the location of each car.

Signed at New York, N. Y., this 6th day of February, 1902.

SAMUEL D. COLLETT.

IV itn esses:

EMERSON R. NEWELL, M. P. TORMEY.

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