US486953A - Means for operating elevator-doors - Google Patents

Description

(No Model.)

R. W. HABE. l MEANS POB. 40EERAIIl\(3r BLEVATOR DOORS. No. 486,953. Patented Nov. 29, 1892.

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@2 9 M www? VUNITED STATES v PATENT Ori-loaf ROBERT WV. HARE, OF ALLEGHENY, PENNSYLVANIA.

MEANS FOR OPERATING ELEVATOR-DOORS.

SPECIFICATION forming part of Letters Patent N o. 486,953, dated November 29, 1892. Application filed February 8, 1892. Serial No. 420,771. (No model.)

T0 all whom, it may concern:

Be it knownthat I, ROBERT W. HABE, a citizen of the United States, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useothers skilled in the art to which it pertainsy to make and use the same, reference being had to the 'accompanying drawings, which form a part of this specilication.

My invention relates to devices for operating elevator-well doors; and it consists in certain peculiarities in the construction, arrangement, and combination of the several parts, substantially as hereinafter described, and particularly pointed out in the subjoined claims.

In the accompanying drawings, Figure 1 is a side sectional elevation of an elevator provided with my improved safety-doors and means for operating the same by the movement of the said elevator-platform. Fig. 2 is an enlarged side elevation of one of the devices for opening and closing the safety-doors.

Fig. 3 is a side elevation of the sliding block.

Figs. 4 and 5 are detail views, respectively, showing the manner in which the springpieces are disengaged from the counter- Yweights and spring-blocks when the doors have been raised to close the hatchway. Fig. 6 is a sectional view showing springs 17 and 18, taken on line a; x, Fig. 1.

16 designates the platform, 1 the verticalcentral guide-post, and 16a inclined bars of an elevator-car, which may be of any suitable construction.

2 and 3 designate vertical posts arranged parallel with each other and with the central Vpost 1.

10 designates the well-doors, which are hinged at their outer ends to the platforms or landings A B, two doors for each landing being shown in the drawings. Connected at its lower end with the central portion of each of these doors 10 by means of a pivoted rod 11 is a block 8, and connected. with the upper end of said blocks by a rope 15, passing over a sheave 12, is a counterweight 14. Each of the blocks 8 has a tongue 8, which is received and slides in a vertical recess formed in the adjacent post 2. The inner side of each of said blocks is also formed with a recess 23, and one of its outersides has a vertical rib or projection 9, the purposes of which will hereinafter appear. A lever 4, which is pivoted at about its center to the adjacent post 2, is provided near its lower end with a catch 5, which extends through an opening 23a in said post and is normally engaged with the recess 23 in the block 8,V thereby holding'the latter in position to keep the door which is connected to it closed. A lever 7 is pivoted near its upperend to the contiguous post 2, and its extreme upper end engages the inner side of the lower extremity of the lever 4. The upper ends of the levers 4 are held outward or away from the posts 2, and the catches at the lower ends thereof thereby normally keptin their innermost position in engagement with the blocks by coiled springs 6, and said upper ends of the levers 4 and the lower ends of the levers 7 are located in the path of rollers 20, which are pivoted to the frame of the elevator and are brought into engagement with said ends of the levers on the downward and upward travel, respectively, ofthe elethe blocks and allowing the doors to fall by gravity when the elevator has reached a certain point relative to the respective blocks.

Attached to the frame of the elevator are two outwardly-projecting pieces 17, each of which is made of spring metal and is adapted to engage the under side of the projections 9 of the blocks S to one side of the elevator, being brought into engagement therewith successively by the elevator in its upward travel, and carries said block upward a su'liicient distance to close the door which is connected with it, at which point the block is locked and further movement thereof prevented by the adjacent catch 5. Plates 19 are attached to the posts 2 opposite the points where the sliding blocks are locked and project outward into the path of the pieces 17. Said plates 19 are angular in shape, and as the pieces 17 are of spring metal it will be seen that when said pieces are brought into engagement with the IOO plates they will ride over the inclined edge thereof and be disengaged from the projections 9 and that they will reassume their no1'- mal position upon passing said plates, so as to be in position to engage the projection of the neXt block when brought thereto by the continued movement of the elevator.

On the downward movement of the elevator the doors passed by the elevator are successively closed by means of spring-pieces 18, which are attached to the elevator-platform 16 and project beyond the same into position to engage the upper ends of the counterweights 14 and force the same downward, and consequently the blocks 8 and their attached doors upward. When the doors to which the respective counterweights are secured have been closed, the pieces 18 are in position to engage the inclined surfaces of plates 13, which are secured to the posts 3, riding over said inclined surfaces and being forced there'- by out of engagement with the counterweights.

In practice the above-described sliding blocks, levers, and counterweights are arranged and combined to operate doors at each door or landing and will at all times keep thel said doors closed, whether the elevator-platform is at the top or bottom or between any of the landings.

In operation the platform moving upward causes the rollers 20 to engage the lower ends of the lowerlevcrs 7, moving the same toward the posts 2, thereby operating the upper levers 4 to disengage the catch 5 from the sliding block 8, which will permit the doors 10 to drop by gravity to allow the platform to pass through. When the said platform has reached the level of the floor A, the spring-pieces 17 engage with the outwardly-proj ectin g portions 9, formed on the sliding blocks 8, thereby elevating said blocks and drawing the doors upward until the said blocks have been made fast by engagement therewith of the catches 5. After this has been accomplished the spring-pieces 17 are disengaged from the block 8 by moving over the angular pieces 19. The elevator-platform moving upward opens and closes each set of doors 'l0 at each landing or fioor in the same manner as above described. These angular pieces may be sunk in the posts 2, so that their surfaces will be flush with the surfaces thereof, as shown in the lower part of Fig. 1, or they may be secured to the faces of the post so as to project therefrom, in which case the ribs 9 will terminate away from the post a sufficient distance to allow them to pass the angular pieces, as shown in the upper part of Fig. 1. At the downward movement of the elevator the rollers 20 operate on the upper set of levers 4 to release the catch 5 and thereby allow the doors to open by gravity, and in passing downward the spring-pieces 18 engage with the counterweights 14, moving the same downward, and thereby closing the doors 10 by drawing the sliding blocks Supward. These spring pieces 18 are disengaged from the weights by the same passing over the angular blocks 13, arranged at suitable positions on the outside posts. This angular piece 13 also serves to prevent the springpieces' 18 from connecting with the weights while the elevator is moving upward.

Having thus described my invention, what I claim, and desire to secure by Letters Patcnt, is-

1. The combination of the doors 10, adapted to close the openings at the various landings of an elevator, locking and releasing devices for said doors,consisting of sliding blocks connected to said doors, a catch for locking said blocks at certain points, levers for releasing said blocks to permit the doors to drop by gravity, and means for moving said blocks upwardly a limited distance by the movement of the elevator-platform to close the said doors, substantially as and for the purpose described.

2. The combination of an elevator-car, the horizontal doors closing the opening at each landing, slidingl blocks connected with' said doors, levers, catches operated by said levers andA designed to engage said blocks, means operated by the elevator-car for engaging said levers and automatically disengaging the catches from the blocks, pieces 17, projecting from the elevator and serving to engage and raise the sliding blocks in the upward motion of the elevator and when the catches are disengaged from the slidingblocks, means for disengaging said pieces from the sliding blocks when the catches are re-engaged' with the latter, and means for raising said sliding blocks when the elevator is moving downward and has passed beyond the doors.

3. The combination of an elevator-car, the doors adapted to close the openings at the various landings, sliding blocks connected with said doors, catches adapted to engage said blocks and hold the doors in closedv position, means for forcing said catches into and out of engagement with said blocks, counterweights connected with said blocks, and means for engaging said cou nterweights when the elevator is traveling downward and has passed beyond said doors, said means serving to force the counterweights downward a predetermined distance and thereby close the doors.

4. The combination of an elevator-car, the doors adapted to close the openings at the various landings, sliding blocks connected with said doors, catches adapted to engage said blocks and hold the doors in closed position, means operated by the movement of the elevator-car for forcing said catches into or out of engagement with saidblocks, counterweights connected with said blocks, means moving with the elevator for engaging said IOO IIO

counterweights in the downward' movement to close the openings at the various landings of an elevator hatchway or well, sliding blocks connected with said doors, means for holding said blocks normally in position to keep said doors closed, means for releasing said blocks to allow the doors to open, and means for automatically raising said doors When the elevater-car has passed beyond them.

6. The combination of the doors adapted to close the openings at the various landings of an elevator hatchway or Well, sliding blocks connected with said doors and having recesses in their under sides, and two levers for each of said sliding blocks, one of said levers carrying ROBERT W. HARE. [L

In presence of- M. E. HARRISON, CHARLES LARGE.

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