US957807A - Door attachment for elevator freight-compartments. - Google Patents

Description

B. A. SNYDER & M. A. GUSTIS; DOOR ATTACHMENT FOR ELEVATOR FREIGHT GOMPARI'MENTS.

APPLIOATION FILED JULY 30, 1909.

Patented ay 10, 1910.

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BRADLEY A. SNYDER, OF HYATTSVILLE, MARYLAND, AND MARVIN A. CUSTIS, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIG'NORS TO SAID MARVIN A. CUSTIS.

DOOR ATTAOHMENT FOR ELEVATOR FREIGHT-OOMPARTMENTS.

To all whom it may concern:

Be it known that we, BRADLEY A. SNYDER and MARVIN A. CUs'rIs, citizens of the United States, residing, respectively, at Hyattsville, county of Prince George, State of Waryland, and at Washington, District of Co lumbia, have invented certain new and useful Improvements in Door Attachments for Elevator Freight-Compartments, of which the following is a specification.

This invention relates to the subject of elevators, and has special reference to that type of elevators carrying separate compartments respectively for passengers and for freight. In this class of elevators, the freight compartment is a frequent and constant source of danger by reason of the-fact that it is ordinarily underneath the passenger compartment entirely out of sight of the operator, and is also always, so far as we are aware, unprotected by doors or closures of any kind. Hence, it is the purpose of the present invention to provide a reliable and safe door attachment for elevator freight compartments of the kind referred to, and which compartment is under the ready and convenient control of the elevator operator within the passenger compartment.

Various forms of construction may be utilized in carrying out the invention, but for illustrative purposes, certain embodiments thereof are shown in the accompanying drawings, in which:

Figure 1 is a side elevation illustrating a combined passenger and freight elevator equipped with the present invention, showing one form of the latter. Fig. 2 is a similar view showing another form of the invention.

Like references designate similar parts in the separate views.

The invention is applicable to any of the well known form of combined passenger and freight elevators, that is an elevator having superposed passenger and freight compartments.

For illustrative purposes, there is shown in the drawings the general outline and form of an elevator car 1 having the separate passenger and freight compartments 2 and 3 respectively, the latter being adapted, ac cording to the present invention, to be protected at the front open side thereof by the hinged grating 4L or equivalent front wall and a sliding door or equivalent closure 5 Specification of Letters Patent.

Application filed July 30, 1909.

Patented May 10, 1910.

Serial No. 510,474.

As shown in Fig. 1, the door opening means may consist of an operators draw element or its mechanical equivalent 8 having a handle or equivalent member 9 exposed to the operator within the passenger compartment '2. The closing means may consist of a weighted or equivalent pull connection 9 connected with the door 5 at a suitable point, and exerting stress in a direction to close the door. The operators draw element consists of a cable, chain, or equivalent flexible connection guided about the suitable direction pulley or pulleys 10 and so connected with the door as to provide for opening the latter when the element 8 is pulled by the operator.

An auxiliary feature which may be used, is that of a latch device for securely holding or fastening the door in its closed position. This latch device is intended to be released by the operators draw element and may consist of a fixed shouldered keeper element 11 and a pivotal latch lever 12. The latch lever 12 is pivotally mounted on the door 5 and is provided with a beveled catch hook 13 for engagement with the keeper element 1.1 and normally held or restrained in an operative position by a retractile spring 1 1. One arm of the lever 12 has connected thereto one end of the draw element 8 which operates through a suitable guide 5 15 and carries an adjustable button or equivalent stop 16 which is drawn against said guide or other fixed member on the door when the latch lever is released by the initial pull on the draw element 8. Thus, the draw element 8 has an initial limited play to release the latch device before pulling upon the door to open the latter.

A starting buffer spring 17 may be arranged in the path of the door 5 so as to be engaged and placed under tension by the latter when fully opened. When the operator releases his pull 011 the element 8, the spring 17 will exert an initial starting impulse in the direction of closing the door. When the door is closed, the operators draw element 8 may be hooked onto a hook or equivalent holding element 18, and likewise when the door is open, may hook onto another hook or equivalent holding element 19,

both of said, hooks 18 and 19 being arranged vention described, and is in effect an endless cable, or equivalent flexible connection arranged about suitable direction pulleys 21. The other features herein described may or may not be used with the modification shown in Fig.2, but in the latter form of the in-- vention it will be observed that the pull connection 20 may be provided with handles or equivalent elements 22 adapted to be engaged with holding means 23 when the door is respectively open and closed.

From the foregoing description, it is to be understood that in referring to elevators carrying separate compartments respectively for passengers and for freight, the term freight compartment is intended to mean any compartment supplemental to the main passenger compartment and employed for carrying servants, freight, and as a general utility compartment, except for regular passengers. Also, it is to be understood in this connection that the invention is intended to apply to and comprehend any form of closure for the supplemental compartment, and which closure is controllable through operating mechanism which is operable absolutely from the main compartment of the elevator. Also, the auxiliary latch device which is employed is entirely automatic in its action and is preferably designed to be placed entirely out of the reach of the occupant of the supplemental or freight compartment.

Various changes in the form, proportion, and minor details of construction may be resorted to without departing from the scope or sacrificing any of the advantages of the mventlon.

We claim:

1. In combination with an elevator car having a freight compartment, of a movable closure for said compartment, and operating mechanism exposed for manipulation to the operator in the passenger compartment and comprising means for opening and closing said closure. 2. In an elevator, the car having passenger and freight compartments, a closure door for the freight compartment, and door operating mechanism having an operators element exposed to the operator in the passenger com partment.

3. The combination with an elevator car having passenger and freight compartments, of a closure door for the freight compartment, and door operating mechanism having opening and closing means for the door, said mechanism being exposed for manipulation by the operator within the passenger compartment.

4. The combination with an elevator car having passenger and freight con1partments, of a closure door for the freight compartment, a latch device for the door, and a releasing connection with the latch device, said connection having an operators element exposed to the operator in the passenger compartment.

5. The combination with an elevator car having passenger and freight compartments, of a closure door for the freight compartment, and door operating mechanism including an operators draw element exposed to the operator in the passenger compartment, and holding means for securing said element when the door is in either an open or closed position.

(3. The con'ibination with an elevator car having passenger and freight compartments, of a closure door for the freight compartment, door operating mechanism having opening and closing means for the door, and a buffer spring arranged to exert a starting impulse to the door in the direction of closing.

7. The combination with an elevator car having passenger and freight compartments, of a closure door for the freight con1 partment, an operators draw element con neeted with the door to provide for the opening thereof and having its operated portion exposed within the passenger compartment, and a weighted pull connection with the door for closing the same.

8. The combination with an elevator car having passenger and freight compartments, of a closure door for the freight compartment, an automatically locking latch device for the door having a pivotal latch lever, an operators draw element having a limited initial play and connected with said latch lever, said element being exposed in the passenger compartment for manipulation by the operator in the latter, and closing means for the door.

9. The combination with an elevator ear having a supplemental compartment, of a movable closure for said compartment, and operating mechanism adapted to be manipulated by the operator in the main compartment and comprising means for controlling the opening and closing of the said closure and for locking the same against manipulation by the party in the said supplemental compartment.

10. The combination with an elevator car having a supplemental compartment, of a movable closure for said compartment, and

operating mechanism adapted to be manipulated by the operator in the main compartment and comprising means for opening said closure.

11. The combination with an elevator car having a supplemental compartment, of a movable closure for said compartment, and operating mechanism adapted to be operated by the operator in the main compartment and comprising means for locking said closure against manipulation by per sons in the supplemental compartment.

12. The combination with an elevator car having a supplemental compartment, of a movable closure for said compartment, and operating mechanism adapted to be operated by the operator in the main compartment and comprising means for locking said closure against manipulation by persons in the supplemental compartment, when said closure is in a closed condition.

13. The combination with an elevator car having main and supplemental compartments, of a movable closure for the supplemental compartment, means operable solely from the main compartment for operating said closure in one direction, and yieldinglyacting means for operating said closure in the other direction.

1-4. The combination with an elevator car having a main and supplemental compart ment, of a movable closure for the supple mental compartment, means operable from the main compartment for operating said closure in one direction, and yieldingly-acting means for operating said closure in the other direction and locking the same against manipulation by the occupant of the supplemental compartment.

15. The combination with an elevator car having a supplemental compartment, of a movable closure for said compartment and means adapted to be manipulated by the op movement for unlocking the latch and its further movement for opening the said closure, said means being adapted to be manipulated by the operator in the main compartment.

17. The combination with an elevator car having a main and a supplemental compartment, of a movable closure for the supplemental compartment, means operable from the main compartment for operatin' said closure in one direction, and yielding y-acting means for operatingsaid closure in the other direction.

18. The combination With an elevator car having a main and a supplemental compartment, of a movable closure for the supplemental compartment, means operable from the main compartment for unlocking said closure and for operating the same in one direction, and yieldingly-acting means for operating said closure in the other direction.

In testimony whereof we hereunto afiiX our signatures in the presence of two Witnesses.

BRADLEY A. SNYDER. MARVIN A. CUSTIS.

WVitnesses R. C. BRADDOCK, EMORY L. Gnorr.

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