US922620A - Elevator. - Google Patents

Description

J; P. ODONNELL,

ELEVATOR;

APPLICATION FILED MAY 29,4908.

Patented May 25, 1909.

3 SHEETS-SHEET 1.

I r (If! zll J. P. O'DONNELL. ELEVATOR. APPLICATION FILED MAY 29, 1908.

922,620. Patented May 25, 1909.

3 SHBBTB-SHEET 2.

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I; 5 I i UNTTED TATES hjgTENT OFFTCE.

JOSEPH P. ODONNELL, OF CLEVELAND, OHIO.

ELEVATOR.

Application filed May 29, 1908.

To all whom it may concern:

Be it known that i, Josnrn P. ODoNNnLL, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in lllevators, and do declare that the follmving is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in elevators, and the invention consists in automatically controlled foldable gates located at elevator landings and adapted to be opened and closed by the elevator car when it passes a landing, all substantially as shown and described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a front perspective view of an elevator landing, showing the gates and hatches closed. Fig. 2 is afront perspective view of the parts shown in Fig. 1 with gates and hatches raised half way by the ascending elevator car, and Fig. 3 is a front perspective view showing the gates and hatches wide open and the elevator at the landing.

The idea of the invention as thus shown is plainly indicated in the several views, and has as its object and novelty the automatic control of the elevator gates at the respective landings, such control being from and by the elevator car E initially, so that when the car has left a landing and gone in either direction, the said gates will be positively and mechanically closed, but when stopped at a landing, or when passing the same in either direction, they will be as positively and mechanically opened. This eliminates the elevator man or other personal attendant, and brings the gates within the certainties of an unfailing automatic mechanical operation that can be implicitly relied upon at all times. To these several ends the said gates are dual or in pairs at each landing, meeting at the center of the landing front to rear, substantially as shown. Each gate comprises a fixed post a or equivalent support of suitable elevation, say three feet high, an inner post 0 on one of the hatclndoors, and a top cross connecting bar or rail 1) jointedly engaged at its ends in any suitable way with both said posts a and c.

The hatch doors, H, are hinged as usual to be opened by the elevator car and to close when the car has passed in either direction, and as said gates are partially supported on Specification of Letters Patent.

Patented May 25, 1909.

Serial N0. 435,635.

said doors or covers, as shown, they will also operate as indicated in the several views and fold and unfold with the opening and closing of said doors Furthermore, the top of the elevator car is shown herein as adapted to contact with and raise the doors H, Fig. 2, and it may have any suitable top construction to serve this purpose, a bow J being shown in this instance, and thus it follows that the car can not pass a landing upward without at the same time lifting its hatch coverings and opening the gate bars G, and said hatch doors or coverings H are so arranged that they close by gravity when the car has passed out of their way, up or down. This accounts for the operation of the gates G in connection with the hatch doors, but, obviously, said gates might be operated in like manner by any suitable substitute for said doors and which would respond, as they do, to the contact of the ear or platform E, and hence any hinged or pivoted parts which are the equivalent of said doors and arranged to operate with the ele vator car substantially as they do, may be employed and be entirely within the spirit and purpose of my invention. In the descent of the elevator car the closed doors H are automatically opened by mechanism comprising the several parts designated by 2, 3, 4 and 5, respectively, and which are designed to be actuated when contacted by the bottom of the car in its descent. Thus, 2 represents a pivotally suspended or hanging fulcrum bar, having its upper end provided with a pivotal or rocking confinement in one of the side posts or run ways in the elevator shaft, while its lower end has a lever 3 hinged at about its middle thereon which is pivoted at its lower end on the corres onding hatchdoor, or door at that side. link or rod 4 connects the upper end of lever 3 with a contact arm 5 adapted to contact with the bottom of the car and which is pivotally engaged at its outer end near the upper end of hanging bar 2 and has link 4 connected therewith nearest its inner end. Both hatch-doors are alike provided with an actuating or opening equipment of this kind; It follows that when said parts are in their normal position, which they take by gravity through the hatch-doors, they are positioned as seen in Fig. 1 and the hatch-doors are closed. Then as the car descends it strikes the inner eX- tremities of arms 5 through its bottom curved or bowed parts at, and this depresses the free upper ends of lower inclined levers 3 through the long links 4 and a fulcrum of hanging bars 2 to lift'the doors. The doors H are thus first raised into position Fig. 2, say half Way open, and then as a completed operation they are swung into wide open position, Fig. 3, before the car can reach the doors, and all the parts are out of the way for the descent. In this latter operation all the strain would come on the several parts 2, 3, 4 and 5 if there were no help to lift the hatch-doors, and to relieve such strain I have provided each door with a counter weight W, which is supported by an arm 8 rigid with the outer end of the top-bar b of the gate and behind or outside of posts a. Said arms are shown as slightly curved toward their extremity and are engaged at their ends with supporting stem or rod 9 on which the counter weights W are engaged, but any equivalent supports for said weights may be employed, such as a chain. However, the weight is so disposed in respect to said arm that it will act only during the first part of the lift of the hatch-doors when help is especially needed, after which it will rest on the floor. Then as the door closes it will come into action again to promote easy and noiseless closing. Said weights furthermore are differential in each grou and are slidably carried by a differentia core 12 on rod 9, so that in seating the weights will come to rest successively and not all at once, and they are picked up one at a time in like manner.

I/Vhat I claim is: V

1. In elevators, a counterweight comprising a series of separate weights, a core of differential size separately supporting said weights and means carrying said core adapted to seat and raise said weights successively, in combination with hatch-doors operatively connected with said weights.

2. A counterweight for elevator gates having a differential core and separate differential weights supported slidably on said core, a rod carrying said core, a folding gate carrying said rod, and a hatch-door connectedwith said gate.

3. In elevator hatch coverings, a pair of doors adapted to fold inward over the hatch, in combination with a pair of folding gates com rising two standards for each gate, one of w ich is supported on the corresponding door, a gate rail pivotally engaged at its ends with said standards and having an arm rigid with its outer end, and a counterweight attached to said arm.

4. The combination of the folding hatch doors with the gates at the front thereof comprising one fixed standard for each gate and one pivoted standard at the inner edge of each door, a cross rail pivotally connected with each set of standards and provided with a lateral projection at one end and a counterweight comprising a plurality of separate parts adapted to be picked up and to be deposited successively.

5. The hatch doors adapted. to fold inwardly and hinged at their outer edges, in combination with folding gates comprising a standard pivoted on each door and a fixed standard outside the door and cross rails supported on said standards and having each a lateral arm at its outer end, a differentially sized core suspended from each arm and separate weight members slidably mounted on said core.

6. The hatch doors and the folding gates therefor, in combination with a counter Weight for each door comprising a core of differential cross section'and a fixed standard on which it is slidably mounted, a series of weight members slidably mounted on said core and operating connections between the said core and the corresponding gate.

7. The hatch doors and the elevator car and a folding gate for each door, in combination with means to open said doors when the car descends consisting of curved bearing parts on the bottom of the car and mechanism connected with each door to raise the same comprising a lever 5 to engage said bearing part, the lever 3 for the door and the operating links 2 and l, and means to assist in initially lifting said doors comprising a counter weight engaged with the gate for each door having a series of weight members adapted to be deposited successively as opening proceeds.

8. The combination of the folding hatch doors and the folding gates, the elevator car and the means for opening the doors from contact with the bottom of the car comprising the levers 3 and 5 and the links 2 and 4 constructed and arranged as shown, the said folding gates each having a cross bar I) with a lateral projection at its outer end and a counter weight suspended from said arm and adapted to assist in lifting the folding doors from their rest across the hatch.

In testimony whereof I sign this specification in the presence of two witnesses.

JOSEPH P. ODONNELL.

Witnesses E. M. Frsnnn, F. O. MUssUN.

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