US1261985A - Hall-button-cut-out switch. - Google Patents

Description

C. W. WHEELER.

HALL BUTTON CUT-OUT SWITCH.

APPLICATION FILED MAY21. 1915.

. Patented Apr. 9, 1918.

3 SHEETSSHEET WITNESSES I C. W. WHEELER.

HALL BUTTON CUT-OUT SWITCH.

APPLICATlON FILED MAY 21. 1915.

1 ,26 1 ,985. Patented Apr. 9, 1918.

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C. W. WHEELER. HALL BUTTON GUT-OUT SWITCH.

APPLICATION FILED MAY 21, 1915. 1,261,985. Patented Apr. 9,1918.

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v UNITED STATES PATENT OFFICE.

CLARENCE W. WHEELER, OF CHICAGO, ILLINOIS.

HALL-BUTTON-CUT-OUT SWITCH.

Application filed May 21, 1915 To all: whom it may concern:

Be it known that I, CLARENCE W. VVHEELER,1 citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Hall Button Cut Out Switch, of which the following is a specification.

My invention relates generally to cut-out switches for automatic electric elevators, but particularly to automatic electric passenger elevators of the push-button-control type; and has for its objects the production and manufacture of a device which, when an operator enters a car equipped therewith, and pushes a button corresponding to one of the other floors or landings served by the elevator, will automatically cut out all interference with the movement of the car through any of the hall buttons pending the attain this object by means of a mechanism illustrated in the accompanying drawings, of which Figure 1. represents a front elevation of a button-box or frame mounted inside the car, and with the near wall re moved; Fig. 2. a side elevation of the same, also with the near wall removed; Fig. 3. a view from above and down through, of a ClOSSSCtlOI1 taken horizontally through, or slightly above the middle of the device when in closed position; Fig. 4. is the same view of the device in open position; Fig. 5. is a view from above down about one third the length, the top wall being removed; Fig. 6 is a diagrammatic illustration of. the device mounted in a car and of the hatchway wiring including door-locks and floor control, and Fig. 7 is a continuation thereof with the addition of the motor control. The same reference characters refer to the same parts throughout the various views.

The box B, comprising two compartments, constitutes the framework or mounting of the device. \Vithin the near compartment, and with their inner ends extending loosely through and beyond the division wall, are mounted the push-buttons, the number cor responding, of course. to the number of floors or landings to be served by the elevator. Within the far or rear compartment. and mounted on a pair of hinges anchored to one of the side Walls, is a general or universal apron A, communicating and cooperating, at or near one end, with a doublenotchcd latch L, impelled by a spring; and at or near the other, by means of a right- Specification of Letters Patent.

Patented Apr. 9, 1918.

Serial No. 29,695.

angular projection or foot F, with a switch H, and having attached, at or near the middle, a relatively long L-shaped arm N, extending back into the hatchway through a relatively large opening in the wall of the car just back of the box B.

The device is mounted, as diagrammatically shown in Fig. 6, in a branch of an elevator electric circuit, which, together with its other branches, embraces a motor, a brake, a motor-control, a floor-control and a series of hatchway door-locks (ther bei1 1g one of the latter at each floor) and at a convenient height on the inner side of that wall of the car which is next to and generally parallel with the hatchway doors, and so that the arm, N, will take a horizontal position about midway between the wall of the car and the wall of the hatchway adjacent thereto, as shown in Fig. 3, where it will be held in position by the outer notch of the catch, L, as shown in Fig. 5, until it is displaced by pressing one of the floor buttons in the car. This is known as normal or closed position; for, it will be observed that this is the position of parts when the car is not in use, and that the switch, H, is closed, connectin wire 9 with wire 8, and making it possible, via wire 9, to complete a circuit from any one of the hall buttons, via wire 11, 12, 13 or 1 But it will also be observed that, when one of the floor buttons in the car is pressed, not only will wire 11, 1.2, 13 or 14 be directly connected with wire 8, and a circuit conipleted, but that the switch, H, will be opened, and wire 9, with all the hall buttons, will be entirely out out from all pos sible interference therewith; and this is known as open position,

To understand the operation of the device, assume that the car is at, say, the third floor, and that it is desired to descend to, say, the second. The passenger or operator enters the car, closes the door behind him, and then pushes the button of this device corresponding to the second floor. Owing to the limitations of a drawing in the matter of time sequence, Fig. 6 shows these two acts as being performed simultaneously, but in practice they are performed consecutively, and the hatchway door at the third floor (Fig. 6) should be thought of as completely closed when the second-floor button is pressed. This last operation not only closes switch, 0, connecting line 8 with line 12, thus closing the second-floor circuit, and sending a.

current of electricity, from one side of the line to the other, through the down magnet of the motor-control, (Fig. 7) via the lines 6, 7, 8, 12, switch D lines D, 2, 4 and 5, connecting the stator and als0 the brake with the line; and to the secondfioor magnet of the floor-control, via 6, 7, D 12, 10 and 5, maintaining the cirsuit until the car arrives at the second floor; and to the second-floor lock via 6, 7, D 12 and 5, preparing it to be unlocked by the arrival of the car; but also, by means of the inner end of said push-button, tilts the apron, A, With its arm, N, into open position, where it is held by the inner notch of the catch, L, until closed again, through the medium of the cam, Z, when the hatchway door is opened upon the arrival of the car at second floor. It will be observed that, pending these operations, and until the switch, H, is closed again, as above indicated, Wire 9, which is necessary to make a circuit from any of the hall buttons, is entirely cut out, making it impossible the while to interfere with the movement of the car from any of them.

It is, of course, possible to resort to changes, variations, and modifications of this construction, but in so far as they do or shall not materially or substantially depart from the scope, spirit and principle of this invention, they are expressly included therein.

Having thus described my invention, I claim:

1. A control switch for elevators comprising a casing in the car, a switch in the casing, an apron for opening and closing the switch, a series of push-buttons for shifting the apron to open position and closing the circuits, an arm for shifting the apron to closed position, and a catch for holding the apron in open or closed position.

2. A control switch for elevators comprising a casing in the car, a switch in the easing, an apron for opening and closing the switch, a series of push-buttons for shifting the apron to open position and closing the circuits, an arm for shifting the apron, to closed position, a catch for holding the apron in open or closed position, and a cam on the hatchway door for operating the arm.

3. A control switch for push-button-controlled elevators comprising a casing in the car, a switch in the casing connected with the hall buttons, a pivoted apron in the casing for opening and closing the switch, a series of push buttons in the casing for shifting the apron to open position and closin other switches, an arm through the wall 0 the casing and car for shifting the apron to closed position, a double-notched catch for holding the apron in open or closed position, and a cam on the hatchway door for operating the arm.

4. A hall-button-cutout control switch for push-button-controlled elevators comprising a casing in the car, a pair of contactpoints in the casing, one being connected with the hall buttons, a pivoted universal apron in the casing to connect said points and normally resting in a closed position a. series of floor push-buttons in the casing or shifting the apron to open position and directly closing circuit switches, a trip-arm through the walls of the casing and the car for shifting the apron to closed position, a cam on the hatchway door for operating the arm, and a pivoted, double-notched and spring-stressed catch in the casing for bolding the apron in open or closed position.

CLARENCE W. WHEELER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent, Washington, D. G.

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