US1648002A - Elevator - Google Patents

Description

1 H. V. MCCORMICK ELEVATOR Filed Dec. 2. 1926 2 Shets-Sheet l Svwmtoz LEVATOR Filed Dec. 2, 1926 2 shew-shew 2 wemtoz Patented Nov. it

HAROLD V. MCCORMICK, F LONG BEACH, NEW YORK, ASSIGNOR, BY MESNE ASSIGN- MENTS, T0 SHUR LGC ELEVATOR SAFETY CORPGRA'IION, 0F NEWARK, NEW JER- SEY, A CORPORATION OF NEW JERSEY.

ELEVATUR.

Application filed December 2, 1926. Serial No. 152,133.

The invention is concerned particularly with means whereby movement of the elevator car is prevented ,when the shaft door is opened and the particular object is to provide means for operation by the door opening devices, whereby a switch mounted on the car and interposed in the electrical control system is opened so as to prevent the starting of the car when the shaft door opposite which thecar has been brought to rest, is opened or starts to open, notwithstanding the possible movement of the controller from {the neutral position.

The invention will be explained more fully hereinafter with reference to the accompanying drawings in which the invention is illustrated in a convenient and practical embodiment.

In the drawings:

Figure l is a partial view in' elevation, as seen from the inside, of a triple shaft door and its actuating devices.

Figure 2 is a view in elevation of the parts shown in Figure 1, together with a portion of the car and the devices (partly broken out) which coact with the devices directly associated with the door.

Figure 3 is a diagrammatic view illustrating particularly the relation of the switch, the controller and the electrical connections mounted on the car.

The shaft door, in association with which the devices hereinafter described are employed, may be of any usual or suitable construction. As shown, the door has two movable members a and a operated, for opening and closing, by a toggle system, which comprises a member I) pivoted as at h on one of the door parts, a member 5 pivoted as at b on one of the door parts and a member 6 connected through a plate lever Z with the fulcrum mounted upon the shattway. The toggle member 6 is pivotally connected at one end with the member 5 and at the same end is provided with an operating handle 6. Its other end is pivotally connected with the member I). The plate lever Z) is suitably connected with a pneumatic check 5'. All of these parts may be constructed and arranged in any suitable manner, the toggle arrangement of the door opening and closing devices being preferred because of the rapi movement of the door from its wide open position and slow movement as it approaches its extreme position of door closure, with consequent prevention of impact, and the locking of the door When fully closed. In operative relation with the toggle system, preferably through the plate lever, 6 is a member adapted to be projected toward the car when the door is in other than a fully closed or nearly closed position.

In the construction shown,a link a is pivotally connected to the plate lever b at its upper end and at its lower end is pivotally connected with a bell crank d, suitably mounted on a bracket cl fixed on the sill of the shaft opening, the bell crank carrying at its free end a roller (Z which, in the opening movement of the door, is projected tot ward the car. The car, which is sufiiciently represented by a portion of the floor at e in Figure 2, carries the usual controller f i which is provided with contacts and electrical connections through which the movement of the car by a motor, not necessary to be shown, is controlled, such connections includmg connections 7 and F, in which is interposed a switch 9, which may be of anycon- Q venient construction.

In the arrangement shown, the movable switch members g and g are operatively connected through crank arms g and a link 9*, with a shoe it supported on the car by bell cranks it connected by a link k for movement together. The shoe is preferably shaped at its ends,to avoid collision in the movement of the car and is in such position on the car that when the car is brought to rest the shoe shall stand opposite the roller d When, therefore, the shaft door is opened and the roller d is projected against the shoe h, the latter will be moved in a direction away from the shaft door and the switch a supp y of current to the car motor even though. the controller f should be moved from the neutral position indicated. It will be understood that the shoe h is normally will be opened and thereby prevent held by its own weight in the osition shown I claim as my invention:

1. In an elevator, the combination of a shaft door, a car, electrical car controlling devices mounted on the car including a switch, a shoe mounted upon the car in operative relation with the switch, a toggle lever system for opening and closing the door, means in operative relation with the toggle lever system to beprojected in the movement of the door into the path of the shoe on the car to effect movement thereof and of the switch, to prevent movement of the car.

2. In an elevator, the combination of a shaft door, a car, electrical car controlling devices mounted on the car and including a switch, a shoe mounted on the car in operative relation with the switch, a toggle lever system for opening and closing the door, a lever in operative relation with the toggle lever system and carrying a roller to be projected in the movement of the door into the path of the shoe on the car to effect movement thereof and the opening of the switch.

This specification signed this 30th day of November A. D. 1926.

HAROLD V. MCCORMICK.

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