US255050A - Elevator-stop - Google Patents

Description

j UNITED STATES lPATENT OEErcE. i

GEORGE (l. TEWKSBUIi-Y, 0F LYNN, MASSACHUSETTS.

E LEVATO R-STO P.

SPECIFICATION forming part of Letters Patent No. 255,050, dated March 14, 1882.

Application tiled July 14, 1881. (No model.)

To all whom it may concern:

Beit known that I, GEORGE C. TEWKsBUnY, a citizen of the United States, residing atLynu, inthe county of Essex and Commonwealth of Massachusetts, have invented a new and useful AImprovement i nElevator-Stops,of which the following is a specification.

My invention relates to that class ot' elevators used in transporting merchandise; and the objects of my improvement are, first, to provide means whereby the ascent or descent of the elevator may be automatically stopped at any given point or apartment between the two cxtreme ends of its journey; and, secondly, to afford facilities whereby the operator at the place and timeof shipping the elevator may determine and fix thepointorapartmentat which it shall automatically stop. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a front elevation of an elevator embodying my invention. Fig. 2 is a sectional plan of the stopping mechanism. Fig. 3 is a front elevation of the shipping-indicator.

The elevator-box A, cord B, drum C, Worm D, pulleys E F G, shaft H, and shippinglevers I J are all constructed and combined to op crate in the usual manner.

Connected with the leverJ is a vertical rod, K, which extends the entire length of the elevator-well, and by this means communication with the driving-belts attached to the pulleys E F G may be had at any and every point throughout the entire journey of the elevator. Said rod K slides in suitable bearings secured to the walls of the building, and is swiveled to the lever J, so as to admit ot' the rotary movementhereinafterdescribed. Amovement of the rod K upward or downward changes the position of the belts upon the pulleys E F G, and in this manner the elevator is set in motion or the movement thereofis arrested whenever occasion requires. To avoid binding, the rod K is provided with a link, a, and joints c c. The weight of the rod K is balanced by counter-weight M, arranged upon lever J Attached to the elevator-box A is a dog, b, which, by coming in contact with the pin 4, moves the :rod K up or down, according to the movement of the said elevator-box, and in this manner thc driving-belts are shifted off the pulleyF onto pulleys E G, whereupon the elevator stops.

Pius 4 are arranged at dit'erent points upon the rod K, one at each oor or apartment by which the elevator passes, and whenever the elevator is to be stopped at a given apartment the pin at that point has only to be arranged in direct line with the dog b.

Upon the rod K are handles 5, arranged one at each apartment, by which the elevator passes, and by grasping this handle the operator (in order to set the elevator in motion) has only to slide the rod K up or down. By moving the handle horizontally he may turn the rod Kso as to bring the pin of any particular apartment into line with the dog b, thus insuring a cessation ol movement whenever the elevator reaches that point.

Each of the handles 5 is provided with an indicator, which consists of a semicircular case, 6, secured to the wall of the building by means of screws 7 and perforated with slots l 2 3, as shown in Fig. 3. A horizontal slot, 8, enables the handle 5 to be brought into communication with each of the slots 1 2 3. The number of vertical slots l 2 3 are made to correspond with the number of apartments or point-s at which it is desired the elevator should be allowed to stop.

The pins et upon the rod K are numbered to correspond with the vertical slots upon the indicator, and each pin is arranged upon the rod K so that when the handle 5 is in a given slot of the indicator, which brings vthe pin of that station or floor into line With the dog l), the pin whose number corresponds with the uumber of that slot is at that moment in direct line with the dog b.

From the foregoing it must be evident that if the operator desires the elevator to stop at a l given point-for example, at the second story he has only to turn the handle5 into line with the slot which bears that number upon the indicator, and then push the rod K up or down, according to the direction in which he desires the elevator should go, and when the elevator reaches the given point the dog b, operating upon the pin at that point, will move the rod, shift the belts to the loose pulleys, and stop the elevator. i This may be done at any iioor or stat/ion for any other oor or station, so that IOC a person on anyoor can send the box to any other loor and 'cause it to stop there until moved to some other.

Having described my invention, what I claim as new, and desire to secure by Letters Patent,

1. In combination with an elevator, a shift ing device adapted to change the direction of the box, or to arrest the same, and an automatic stop mechanism adapted to be set for any given ,station or'iloor and to be acted on by the box to arrest the same when it reaches that point, all substantially'as described.

2. The combination of the lever I J, pivoted as shown, the pulleys E F G, and the intermediate belt-shifting devices, the verticallysliding rod K, and the handles 5 5 5, arranged at different points on the shaft and provided with suitable locking mechanisms, substantially as described.

3. In combination with a connecting-rod, K, provided with handles 5, and suitable projecting pins, 4, an indicator, substantially as set forth, whereby Athe position of said pins may be regulated,as and for the purposes described. 25

In testimony whereof I have signed my name to this specification in presence oftwo subscribing Witnesses.

v GEO. C. TEWKSBURY. Witnesses:

G. B. TUTTLE, GEO. E. GooDING.

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