US810169A - Elevator-cage-door opener. - Google Patents

Description

No. 810,169. PATBNTED JAN. 16, 1906.

E. & w. B. MURRAY.

ELEVATOR GAGE DOOR OPENER. APPLICATION FILED MAY 31.1905.

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WITNESSES: [/VVE/VTORS. 44 j Of/.

No. 810,169. PATENTED JAN. 16, 1906. E. 6: W. B. MURRAY.

ELEVATOR GAGE DOOR OPENER. APPLICATION FILED MAY 31.1905.

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Aitomey UNITED STATES PATENT UFFICE.

OF COLUMBIA.

ELEVATOR-CAGE-DOOR OPENER- Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed May 31, 1905. Serial No. 263,084.

To all whom it may concern.-

Be it known that we, EUGENE MURRAY and WILLIAM B. MURRAY, citizens of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Elevator- Cage-Door Openers, of which the following is a specification.

()ur' invention relates to door-opening devices and to that particular class used in connection with elevator well or shaft doors.

The object of our invention is to provide reliable means for opening elevator-well doors adapted to be operated by the ascending or descending car.

It is a further object of our invention to provide means for unlockingthe well door adapted to be operated by the door-opening means.

It is a further object of our invention to provide means for preventing the car from leaving a floor without closing the door if the same is opened.

Vith these and other object in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims.

In the drawings, Figure 1 is a sectional view of an elevatorcar and well-door equipped with our device Fig. 2 is a view of the inside of a well-door. Fig. 3 is a view of the cam-plate attached to the car. Fig. 4 is a detail sectional view of the cam-groove and the roller.

Referring to the drawings, in which like numerals of reference indicate corresponding parts, 1 is an elevatorcar provided with an operating-wheel 2. Beneath the car-floor 3 are secured mountings 4 and 5 for rod 6 and bell-crank 7. One end of rod 6 is connected to a sliding member 8, mounted in a socket 9, located in the framework of the elevator-car. To the outer end of member 8 is secured a plate 10, provided with a earn-groove. 11, having inwardly-disposed flanges 12 for purposes which will be hereinafter described. Bell-crank 7 has one of its arms connected to the end of rod 6 and its other arm connected with the plunger 13, which passes up through the floor of the car. The connections just described are loose connections adapted to be adjusted to regulate the extent of movement of member 8. Springs 14 and 15 are arranged in connection with mounting 4 to normally hold the cam-plate 10 close against the car.

Referring now to that portion of our device secured to the shaft and door, 16 is the door of an elevator well or shaft, and 17 the floorjoist forming part of the shaft. Secured to joist 17 by fulcrum 18 is a lever 19, connected at its upper end by a link 20 to lock-releasing rod 21. The link 20 is secured to the door by a bolt passing through slot 20, provided in the link, said slot permitting a limited longitudinal movement of the link. The rod 21 passes through the lock-casing and connects with an arm 22, which operates to raise latch 23 out of engagement with hook 24, secured to the wall of the well. A coilspring 25, mounted on rod 21, presses against a collar on said rod to force it forward in order to keep the latch 23 normally in a locking posi tion. To the lower end of lever 19 a roller 26, provided with flanges 27, is secured by a bolt 28, as shown in Fig. 4.

The operation of our device is as follows: The elevator-car, ascending or descending, will leave the welldoors undisturbed unless the operator forces cam-plate 10 outward by pressing on plunger 13. When plun er 13 is forced downward, the lower arm of bell-crank 7 forces the rod 6 forward against the opposing force of springs 14 and 15. This forward movement of rod 6 pushes outward sliding member 8 and cam-plate 10 is moved away from the car to the position shown in Fig. 1. As the car continues in its course the roller 26 is engaged by the cam-groove 11, which operates to drive said roller to the right, as viewed in Fig. 2, and with it lever 19, to which. it is attached. The first movement of the lever after the roller has been engaged by. the groove is lost by the well-door through DiSTRICT slot 20, the result being that the latch 23 is lifted by the rod 21 through link 20 before any pull is exerted on the door. The camplate 10 is so located on the car that when the floor of the car is on a level with the floor supported by joist 17 the roller 26 is at the end of its travel in one direction and the door is open and when the car moves either up or down the roller 26 is forced in the opposite direction and, the door is closed.

We have provided rod 21 with a slot 21, through which a pin passes to connect it with arm 22, the object being to enable the latch 23 to be raised without operating the dooropening mechanism and for the further purpose of allowing the latch to slide over hook 24 when pressure is exerted on rod 21 in the direction of the lock, as is the case when the door is being closed by cam-plate 10.

It will be observed that when once the roller 26 is engaged by the cam-groove it will retain the cam-plate 10 against lateral disengagement by the flanges 12 engaging with the flange 27 on the roller. This prevents the car from leaving the floor without closing the door.

Having thus described our invention, what we claim as novel, and desire to secure byLetters Patent, is

1. The combination with an elevator-car, of a laterally-movable member with a camgroove and flanges projecting over the same a door to the elevator-well; and means operating to open said door adapted to be engaged by the cam-groove, and held from lateral disengagement by the flanges.

2. The combination with an elevator-car of a movable cam carried thereby; a welldoor, a lever having a fixed fulcrum connected to the door in the path of movement of the cam to be engaged thereby, means for preventing accidental disengagement of the members, and means for operating said cam.

3. The combination with an elevator-car, of a laterally-movable member having a cam groove therein, of a lever having a fixed fulcrum and provided with a member to engage said groove, means for preventing accidental disengagement of the parts, door-releasing means operated by the lever, and means for operating the cam.

4. The combination with an elevator-car, of a well-door and a pivoted latch thereon, a rod connected to said latch, and a slotted link connected to the rod, a pin in the door located in the slot, an operating-lever connected to the link, and means on the car adapted to engage said lever to release and open the door. I

5. The combination with an elevator-car, of a well-door and a pivoted latch thereon, a

rod connected to said latch, and a slotted link connected to the rod, a pin in the door located in the slot, an operating-lever connected to the link; a cam member on the car and means on the operating-lever to engage said cam to release and open the door.

6. The combination With a Well-door and a lever connected to open the same, of an elevator-car and a laterally-movable member to engage said lever, an angular plunger integral with said member having bearings in the car-frame, a connecting-rod attached to the plunger, and means to operate said rod.

7. The combination with a well-door and a lever connected to release and open the same, of an elevator-car and a laterally-movable member to engage said lever, an angular plunger integral with said member having earings in the carframe, a connecting-rod attached to the plunger, a connecting-rod, a bell-crank lever, and a depressiblefoot-plunger.

8. The combination with a well-door and a lever connected to release and open the same, a roller on the lever; an elevator-car and a laterally-movable member having a camgroove therein to engage said roller, a plunger integral with said member having bearings in the carframe, a connecting-rod attached to the plunger, and means to operate said rod.

9. The combination with a well-door, of a lever connected to release and open the same, a flanged roller on the lever, a laterallymovable member adapted to engage said roller, said member having a cam-groove formed therein, flanges overhanging said groove, a plunger on the member having bearings in the car-frame, a connecting-rod attached to thg plunger, and means for operating said r0 In testimonv whereof We aflix our signatures in presence of two witnesses.

EUGENE MURRAY. WILLIAM B. MURRAY.

Witnesses:

STANLEY C. VEIRs, ASHER TRAIN.

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