US718230A

US718230A - Elevator.

Info

Publication number: US718230A
Application number: US10238102A
Authority: US
Inventors: William H B Teamer
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-04-11
Filing date: 1902-04-11
Publication date: 1903-01-13
Anticipated expiration: 1920-01-13

Description

No'. 718,230. PATBNTED JAN. la, 1903. L

w. H. B. TEAMBR.

ELEVATOR.

APPLIGATION FILED AP. 11, 1902.

No MODEL. z SHEETS-SHEET 1.

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WILLIAM H. B. TEAMER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF TVO-THIRDSTO JOSEPH RAMSEY AND ISAAC ALLOWAYS, OF PHILADEL- PHIA, PENNSYLVANIA.

SPECIFICATION forming part'of Letters Patent No. 718,230, dated. January 13, 1903. Application nel April 11,1962. serial No. 102,381. (No model.)

a citizen of the United States, anda resident of the city of Philadelphia, State of Pennsylvania, have invented lcertain new and luseful` Improvements in Elevators, of which the'following is a full, clear, and eXact description,

My invention relates" generally to an improvement in elevators, and particularly to an improved mechanism for automatically controlling thecar at landings.

One of the main objects of myinvention is to `provide means whereby the car Vwhen stopped at a landing or ioor lnay be alltomatically held in such position so long as the landing-door is open and movement due to any defective action of the/controlling mechanism compensated for automatically until the said door is closed.

A further object of my device is to provide means whereby the elevator is immediately and automatically made to return to its proper position at the landing should the controlling mechanism operate improperly or the valves leak sufficiently to cause the elevator to commence its movement either in an upward or downward direction.

Another object is toprovide mechanism in combination with that above referred to whereby the landing-door is locked in its closed position at all times other than those when the elevator is not at that particular landing or within a predetermined distance of the same.

For a detailed description of my invention reference may be had to the following speciiication and to `the accompanying drawings, forming a part of the same, in which- Figure 1 shows a side elevation of a car embodying my device, one side of the car being shown removed. Fig. 2 is a sectional view of the mechanism carried by the car and the coacting mechanism located at a landing, showing the same engaged and taken substantially on the line 2 2, Fig. 3, and looking toward the right. Fig. 3 is an elevation of the car and landing nlechanism, the operating-shaft be-l ing shown as shortened for convenience. Fig. 4 is a sectional view of the same parts,

shaft 5, carried by the car 1.

taken substantiallyk upon the line 2 2, Fig. 3, but looking toward the left. Fig. 5 is a sectional view taken substantially upon the line 5 5, Fig. 3, looking toward theright; and Fig. 6 is a sectional view of the lower end of the door-bar and locking-hook, taken substan- Itially upon the line 6 6, Fig.

reference being had to the accompanying drawings, forming part-of this specification.l

Similar reference-numerals indicate like part-s upon the several gures ofthe drawings. Referring to Fig. 1, the numeral l indicates the body portion of the car, having the usual controller-wheel 2 or its equivalent and the usual chain or belt 3, running to those parts yof the controlling mechanism carried by the car. 4 is an auxiliary sprocket-chain which connects the-mechanism for holding the car at the landing with the controller-Wheel 2. At the bottom of the car, near the edge of the same, is supported a shaft 5 in suitable bearings 6 and 7. This shaft 5 has fixed or keyed llpon it three parts-to wit, a sprocket-Wheel 8,a gear-wheel 9, and a cam or arm 10. The sprocket-chain 4 passes around the sprocketwheel 8 and so connects the .shaft with the controller wheel. The parts thus far described constitute those carried by the car.

Upon the vertical portion of the hatch, between the floor and the lower ceiling, is hinged or otherwise held the vertical rack 11 and is adapted to be thrown into and out of engagement with the gear-wheel 9, which is located in a vertical plane with the same upon the In this instance the rack carries the projections 12 12, which are pivoted to the standards 13 13, carried by the base-plate 1-1, which is fixed to the hatch; but said rack may be secured in any suitable way, provided it is free to move toward and away from the gear-wheel to engage the same. The rack carries a projection 15, within which is a diagonal or inclined slot 16. Said slot 16 is adapted to beengaged by a vertically-oscillating pin, hereinafter to be described, to move the rack inward and outward.

Upon the base-plate 14 is pivoted the bellcrank lever 15', having one end weighted, as at 17, and its other end provided with a projection 18. A locking-bar 19 projects downwardly from the landing-door, and when the same is closed bears against the projection 18, holding the same at the limit of its move- IOO ment toward the right. A portion 20 projects from the hub of the bell-crank lever and carries a pin or projection 21, which is adapted to engage the slot 16 in the projection l5, carried by the rack. It will be seen that when the landing-door is opened the bar 19 will be moved toward the left, thus releasing the bellcrank lever and allowing it to turn about its pivot. This movement about the pivot will cause the pin 21 to travel upwardly in the inclined slot 16, and thereby move the rack 1l outwardly to engage the gear 9. The reverse movement of the bar 19 will canse the rack 11 to be disengaged from thc gear 9.

To the lower portion ofthe plate 14 is fixed a spring-arm 22, which is in a vertical plane with the arm 10 on the shaft 5. This arm 22 has a raised portion 23, which extends upward and downwardly a predetermined distance from a fixed line which represents the position when the ioor of the elevator is exactly level with the door at a landing. These distances are fixed by the municipal regulations of some cities to three inches. The spring-arm 22 is provided with a hooked or barbed portion 24 at its upper end, which is adapted to engage the lower end of the locking-bar 19 of the landing-door. The relation between the arm 10 and the car-controlling mechanism is such that when the said mechanism is in the position to stop the elevator the arm 10 will be in a horizontal position and will bear upon the spring 22 at its raised part 23, so as to disengage the hook 24 from the end of the door-bar 19. It will be seen that if the car stops in such a position as to bring the arm 10 within the space limited by the raised portion 23 the door may be opened. The opening of the door will release the bellcrank leverand so raise the rack 11 and cause the same to mesh with the gear-wheel 9. This will not only lock the controller-wheel 2, so that it cannot be turned by a person within the car, but should the controlling mechanism or valves leak and cause the elevator to creep the controlling mechanism would be automatically operated to compensate for the creeping motion, either by closing the valve or by reversing the controller to give a slight motion to the car in an opposite direction. This is made possible from the fact that the rack 11 is ixed,and any motion of the car causes the gear 9 to travel along the rack and rotate the shaft 5. For example, referring to Fig. 1, aclockwise motion of the controller-wheel 2 will start the car downwardly and an anticlockwise motion will start the car upward. Should the controlling mechanism be defective and cause the car to creep in an upward direction, the rack 11 being stationary, the shaft 5, and consequently the wheel 2, will be turned slightly in a clockwise direction, which will just compensate for the upward motion by bringing the car to a stop or give the car a slight downward motion, depending on the adjustment and relations of the various parts. In the latter case the downward motion after a slight limits depending upon the amount of leakage and the lost motion7 between the parts.

It will thus be seen that I have produced a device which will accomplish the objects above enumerated and by means of simple and efficient mechanism which is applicable to different forms of elevator-operating mechanisms now in use, including hydraulic, steam, electric, dac.

The shaft 5, which carries the sprocket 8 and gear 9, is preferably made in two sections and connected by a universal joint, so that the end which carries the gear 9 may be inclined outward toward the landing, so as to bring said gear in a position to be engaged by the rack ll. This construction is resorted to in practice because the gear 9 is much smaller in diameter than the sprocket-wheel 3. The gear 9 must necessarily be beveled in proportion to the incline of the shaft, in order that it may properly mesh with the rack 11.

Minor changes in details and arrangement of parts may be made without departing from the spirit of my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

l. In combination, an elevator-car, a landing, controlling mechanism, a controller member located upon the car, means at the landing to lock the controller member and to compensate for movement of the car while adjacent the landing at which it is desired to stop the car and connections between said means and controller member, substantially as described.

2. In combination, an elevator-car, a landing, controlling mechanism, a pivoted controller member located upon the car, means at the landing to lock the controller member from rotation while the car is stationary and to compensate for movement of the car due to defective action of the controlling mechanism, and connections between said means and controller member, substantially as described.

3. In combination, an elevator-car, a landing, a door therefor, controlling mechanism, means for locking the landing-door when the car is more than a predetermined distance from the landing, and means operated by the door-locking means, to lock the controlling mechanism and to compensate for movement of the car while adjacent the landing at which it is desired to stop the car, substantially as described.

4. In combination, an elevator-car, alanding, a door therefor, controlling mechanism, a controller member located upon the car, means for locking the landing-door when the car is more than a predetermined distance from the landing, and means operated by the door-locking means to lock the controller IOO IIO

member and to compensate for movement of the car While adjacent the landing at which it is desired to stop the car, substantially as described.

5. In combination, an elevator-car, a landing, a door therefor, controlling mechanism, means located at the landing for lockingthe landing-door, means carried by the car for operating said locking means, and means operated by said door-locking means for locking the controlling mechanism, and to compensate for movement of the car While adjacent the landing at which it is desired to stop the car, substantially as described.

6. In combination, an elevator-car, a landing, a door therefor, controlling mechanism, a controller member located upon the car, means located at the landing for locking the landing-door, means carried bythe car for operating said locking means, and means operated by said door-locking means for locking the controller member, and to compensate for movement of the car, While adjacent the landing at Which it is desired to stop the car, substantially as described.

7. In combination, an elevator-car, a landing, a door therefor, controlling mechanism,

means located upon the car and connected With the controlling mechanism for locking thelatter and for giving the same a movement to compensate for a movement of the car due to defective action of the controlling mechanisni and means located at landing for locking the landing-door and for actuating said means for operating the controlling mechanism, substantially as described.

8. In combination, an elevator-car, a landing, a door therefor, controlling mechanism, a gear, a rack, means connecting said gear and rack with the controlling mechanism, means for giving said lgear and rack a relative movement to cause the same to mesh and unmesh, and means for operating said latter means when the car is within a predetermined distance of a landing, substantially as described. v

9. In combination, an elevator-car, a landing-door, controlling mechanism, a gear, a

rack, means connecting said gear and rack.

with the controlling mechanism, means for giving said gear and rack a relative movement to cause the same to mesh and unmesh, and door-locking means, said door-locking means being connected with said gear and rack meshing means to operate the same, substantially as described.

l0. In combination, an elevator-car, alanding, a door therefor, controlling mechanism, a shaft carried by a car and operatively connected with said controlling mechanism, a cam or arm carried by said shaft, a gear also carried by said shaft, means for locking the door located at the landing and adapted to be operated by said arm, a rack also located at the landing and adapted to engage said gear, and connections between said rack and said door-locking means to operate the former to cause the same to mesh and unmesh With said gear, substantially as described.

1l. In combination, an elevator-car, alanding, controlling mechanism, a shaft carried by the car and operatively connected with said controlling mechanism, a cam or arm carried by said shaft, a gear also carried by said shaft, a door at the landing, a lockingbar projecting from said door, means to engage said bar to lock said door and adapted to be operated by said arm, a bell-crank lelever having one weighted arm and a second arm adapted to engage said door-loci; ing bar, a projection carried by said bellcrank lever, a rack located at the landing and adapted to,move transversely to engage said gear, a part having a diagonal slot carried by said rack adapted to engage said projection, whereby the oscillation of the bell-crank lever Will operate said rack and cause the same to mesh and unmesh with said gear, substantially as described.

In Witness whereof I have hereunto set my hand this 5th day of April, 1902.

WILLIAM I-I. B. TEAMER.

Witnesses:

JNO. T. CRoss, CEAS. K. BENNETT.