US667430A - Elevator-controller. - Google Patents

Description

Patented Feb. 5, I901.

B. DUBINSKI. ELEVATOR CONTROLLER.

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B. DU'B'INSKI.

ELEVATDR CUNTROLLER.

(Application 11 d June 21, 1899.)

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(No Model.)

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UNITED STATES BENJAMIN DUBINSKI, OF SAN ANTONIO, TEXAS.

ELEVATOR-CONTROLLER.

SPECIFICATION forming part of Letters Patent No. 667,430, dated February 5, 1901.

Application filed June 21.1899. Serial No. 721,287. (No modeld To all whom it may concern:

Be it known that I, BENJAMIN DUBINSKI, a citizen of the United States, residing at San Antonio, in the county of Bexar and State of Texas, haveinvented certain new and useful Improvements in Elevator-Oontrollers, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to a hand-power ropeelevator equipped with electrical operating mechanism and means whereby the elevator may be quickly and eifectually controlled either automatically or manually.

My invention consists in features of novelty hereinafter fully described, and pointed out in the claim.

Figure I is a view mainly in side elevation, but partly in vertical section, of my elevator mechanism. Fig. II is a View in elevation looking toward the left-hand side of Fig. I. Fig. III is an enlarged detail view of the shipper-rope cam-wheel and the brake-operating trip-lever actuated by said wheel, the parts being shown in lowered position. Fig. 1V is a similar view to Fig. III, the parts being shown in elevated position.

1 designates the electric motor, which may receive its current-supply from any suitable source. The armature-shaft of said motor receives a belt 2 upon its pulley, the said belt being arranged upon a drive-pulley 3, the shaft 4 of which is mounted in hangers 5. (See Fig. I.) On the shaft 4 beside the drivepulley 3 is a grooved pulley 6, that receives a driving-rope 7. The driving-rope 7 passes under a guide-sheave 8, mounted on a shaft supported by a frame 9.

1O designates uprights, and 11 is a movable cross-piece seated between the uprights 10, on which a guide-sheave 12 is mounted upon a suitablejonrnal. This guide-sheave 12, like that 8, is adapted to receive the driving-rope 7. The uprights 10 are provided with vertical slots l0 near their upper ends (see Fig. II) that receive the bolts 13, by which the cross-piece 11 is secured to said uprights. By this arrangement the sheave 12 is rendered adjustable vertically to provide for the tightening or loosening of the driving-rope 7, according to any slackness existing therein.

19 designates a brake-beam pivoted at 20 to the framework 16. This brake-beam is supplied with brackets 21, that carry brakeshoes 22, of hard wood or other fibrous material, adapted to bear against the fiat surface 15 of the grooved wheel 14. The free'end of .the brake-beam 19 is provided with an adjustable weight 23, containing a set-screw 24, said weight: being designed to increase the downward pressure of the brake-shoes 22 on the wheel 14 when the brake-beam is in lowered position. When the elevator mechanism is at rest, the brake-beam 19 is in lowered position, as seen in Figs. I and II, thereby holding the wheel 14 anddruin 17 from movement.

25 is a trip-lever the free end of which extends beneath the free end of the brake-beam 19, while the opposite end of said lever is pivoted at 26 to an arm 27, supported by the crossbar 16 of the frame 16.

28 designates a cam-wheel mounted on a shaft supported by the cross-bar 16 and provided with a cam 29. This cam-wheel is located beneath the trip-lever 25, and its cam 29 is adapted to strike said trip-lever when turned into the elevated position seen in Fig. IV, thereby elevating said lever and raising the brake-beam 19 to carry the brake-shoes 22 away from the wheel 14. The cam-wheel 28 is grooved (see Fig. I) and receives the shipper-rope 30, having its ends attached to the wheel 28, said shipper-rope extending to the bottom of the elevator-shaft, where it passes around a guide-pulley 31. Connected to the shipper-rope 30 is a rocking arm 32, the opposite end of which is pivoted at 33 to a switchboard 34. This switchboard is provided with contacts 35, 36, and 37, adapted to receive the connected contact- arms 38 and 39, operated by the rocking arm 32. The contact-arm 39 is pivoted at 40 to the switchboard and is joined to the arm 38, extending from the rocking arm by a link 41. The arms 38 and 39 are confined with guides 42.

Suitable Wiring connection is provided between the switchboard 34 and its parts and the motor 1, through means of which the said motor may be stopped, started, or reversed by swinging the contact- arms 38 and 39 into engagement with the various contacts 35, 36, and 37 under the action of the rocking arm 32. The shipper-rope 30 is provided with buttons 43, secured thereto, one near the upper end of the elevator mechanism and the other near the lower end. These buttons 43 are designed to be engaged by an arm or projection carried by the elevator-car, whereby the shipper-rope 30 may be automatically moved when the car reaches the limit of its n pward or downward travel.

44 designates a hand-rope joined by chains 45 and clips 46 to the shipper-rope 30. This hand-rope is adapted for use by the operator to stop the elevator mechanism at will by simply pnlling upon said hand-rope and turning the cam-wheel to break the electrical circuit to the switch and apply the brake to the wheel 14, thus bringing the parts to a standstill.

In starting the elevator mechanism the shipper-rope 30 is grasped and pulled upon according to the direction in which it is desired to convey the elevator-car. The movement of the shipper-rope turns the cam-wheel 28 from the position seen in Fig. III to the position shown in Fig. IV, thereby elevating the trip-lever 25 and carrying the brake-beam 19 upwardly. This action removes the brakeshoes 22 from contact with the wheel 14 at the same time the rocking arm 32 is moved by the shipper-rope, and the contact'arms 38 and 39 are carried to the contacts 35 and 36 or 36 and 37, thereby completing the circuit through the motor and putting the motor into operation to impart movement to the belt 2, drive-pulley 3, and driving-rope 7 to move the hoisting-rope and the car carried thereby. The elevator-car will be carried until the en gaging parts carried thereby contact with one of the buttons 43 on the shipper-rope or the hand-rope 44 is manipulated to move the shipper-rope 30 and turn the cam-wheel 28 to retract the cam 29 from its elevated position, thereby allowing the trip-lever 25 to fall into the position seen in Figs. II and III and permitting the brake-beam to descend and carry the brake-shoes into frictional contact with the circumference of the Wheel 14. When this occurs, the rocking arm 32 is simultaneously moved, and the switch-contacts are cut out of circuit with the motor. The switch is connected through a resistance-case to the motor in series.

I claim as my invention In an elevator, the combination of hoisting mechanism, a brake adapted to control said hoisting mechanism, a ca m-wheel adapted to control said brake through an interposed triplever, said trip-lever, a shipperrope connected to said cam-wheel, a switch, buttons carried by said shipper-rope, and a hand-rope connected to said shipper-rope, substantially as described.

BENJAMIN DUBINSKI. In presence of J. H. ARCHIBALD, G. ROBINSON.

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