US624898A - Device for operating elevator landing-doors - Google Patents

Description

No. 624,898. Patented May l6, I899u E. G. AKEBS. DEVICE FOR OPERATING ELEVATOR LANDING DOORS.

(Application filed Feb. 8, 1899.)

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No. 624,898. Patented May 16, I899.

E, C. AKEBS. DEVICE FOR OPERATING ELEVATOR LANDING DOORS.

(Application filed Feb. 8, 1899,) (No Model.) 2 Sheets-Sheet 2.

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"ATENT OFFICE.

EARL O. AKERS, OF PORT HURON, MICHIGAN.

DEVICE FOR OPERATING ELEVATOR LANDING-DOORS.

SPECIFICATION forming part of Letters Patent No. 624,898, dated May 16, 1899. Application r ry 8,1899. Serial No. 704.903. (NomodeL) To all whom it may concern:

Be it known that I, EARL O. AKERS, a citizen of the United States, residing at Port Huron, in the county of St. Clair and State of Michigan, have invented certain new and useful Improvements in Devices for Operating Elevator Landing-Doors; and I do declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which it apperfor this purpose.

To this end the invention consists in the construction,combination, and arrangement of the several parts of the device, as will be hereinafter more fully described, and particularly pointed out in the claims.

In the accompanying drawings the same reference characters indicate the same parts of the invention.

Figure 1 is a perspective view with a portion of the front Wall of the well broken away to show my improved door-operating device. Fig. 2 is a front elevation of the landing-door. Fig. 3 is a similar View of the contiguous face of the elevator-car. Fig. 4 is a longitudinal section through the elevator-car. Fig. 5 is a transverse section through the same. Fig. 6 is a horizontal section through the car and well-shaft.

A denotes the landing-door, which is suspended by the grooved rollers a a on the track-rail B, fixed to the wall of the elevatorshaft, and the lower edge of the door projects below the guard-rail B, fixed below the shaft- S1 C denotes the latch-lever, fulcrumed on the stud-bolt c, fixed in the door A, and it is formed with a vertical arm 0, on which is fixed a laterally-projecting stud-screw 0 carrying a friction-roller c 0 denotes the strap-bracket, encompassing the latch-lever and fixedto the door to limit the play of the free end of the latch, and 0 denotes the usual keeper, fixed to the shaftwall and projecting into the path of the billhook on the latch.

D denotes the car, and E a plate vertically hinged thereto and normally held against the front of the car by the spiral spring d, and (1' denotes an arm fixed on one end of a shaft d fulcrumed in suitable brackets fixed to the bottom of the car, and the free end of said arm rest-s against the rear face of the hinged plate. The opposite end of the shaft d carries an arm d from which a rod (1 extends upward through the bottom of the car and terminates in a spring-actuated foot-knob 1), the operation being such that when the footknob D is pressed downward the'bell-crank lever (1 will force the free end of the hinged plate E a limited distance from the front of the car, and when the said foot-knob is released its spring d and the spiral spring 61 will restore these parts to their normal positions.

The front face of the plate E is provided with a grooved track 6, having flaring ends 6 e to engage the friction-roller c on the latch O as the elevator-car travels up or down. This track e is continuous from end to end and comprises two diverging counterpart sections e and c and when the plateE is in its normal position the track is drawn backward and out of the path of the latch-roller 0 but when the car is ascending and the track-plate E pressed outwardly from the car the tracksection 6 will encompass the friction-roller, release the latch, and slide the door open, and when the car is stopped at a landing the door will be held open by the V-shaped pocket formed at the meeting portion of the tracksections, and when the car continues its journey upward the track-section a will slide the door to, and as the car descends a like result takes place. The knob-rod passes through a guide-plate on the bottom of the car, and the rod is provided with a notch to engage the plate, if necessary, to retain the track-plate in an operative position.

Of course it will be understood that a landing-door is operated only when the conductor has his foot on the knob, and consequently when the track-plate is in its normal position against the car the latter will pass alanding without touching the door.

In the accompanying drawings I have shown my invention in the best form now known to me; but obvious modifications may be made in the details without departing from the spirit of my invention.

Having thus fully described my invention, What I claim as new and useful, and desire to secure byLetters Patent of the United States, 1s-

1. In combination, the landing-door, the lever-latch carrying the antifriction-roller, and the keeper, fixed to the Wall of the elevator-shaft, the car, the plate hinged to the car, and the diagonal, grooved track carried by said hinged plate, and means for projecting" said track into the path of said roller, substantially as shown and described.

EARL C. AKERS.

Witnesses:

BURT D. OADY, FRANK T. CARLETON.

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