US1165916A - Safety elevator device. - Google Patents

Description

l. SPIRADEK, S. KALISZ 64 W. WILKOSZ.

SAFETY ELEVATOR DEVICE.

APPLICATION FILED JUNE 8, WM.

Patented Dev. 28, 1915.

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. ILLINOIS.

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Specification of Letters Patent.

Patented Dec.;?8,il915.

Application filed June 8, 1914. Serial No. 343,850.

To all whom it may concern I Be it known that we, IGNACY SPIRADEK, STEFAN KALIsz, and WLADYSLAW WILKosz, subjects of the Emperor of Austria-Hungary, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Safety ElevatorDevices, of which the following is a specification.

This invention relates to certain new and useful improvements in elevator safety devices.

For the purpose of preventing accidents in connection with elevators, it is now designed to provide means whereby the electric power circuit for running the elevator cars is completely broken whenever any one of the doors of the elevator shaft is in its open position, or in other words, the opening and closing of each individual shaft door results automatically in simultaneously opening and closing the electric circuit of the system.

A further object is to provide a second electric circuit for the system which is normally open but may be held closed by the operator upon the car whenever it is desired to move the car while a shaft door is openedand the main circuit broken.

A still further object is to provide a box inclosed normally open contact switch at each floor landing of the elevator shaft and adapted to be closed and retained in that position for completing the electric circuit of the system upon the closing and engagement thereby of the shaft door of that particular landing.

With these general objects in view an others that will appear as the nature of the invention is better understood, the same consists in thenovel combination and arrangement of parts to be hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the appended claims. I

In the drawing forming a part of this application and wherein like designating numorals refer to corresponding parts throughout the several views :Figure 1 is a Sldfl elevation of the door-actuated switch portions thereof and the casing therefor being shown in section. Fig. 2 is a top plan view of the switch with the casin removed and parts thereof broken away. ig. 3 is a perspective view of the insulated switch arm connection detached. 1

in its path of movement to engage andoperate an electric switch 18. The electric switch 18 positioned within a casing 19 is mounted interiorly of the elevator shaft at each floor landing and is so positioned at the side of each door-way as to allow the door 16 when closed to engage and depress the operating switch arm 20 of the switch positioned at that particular landing. The switches 18 each consist of a blade 21 pivoted-at one end to a post 22 which post is electrically-connected with the line wire 23 leading to the main electric cable. The blade is provided adjacent its free end with a circular boss 24 having a cylindrical contact block 25 secured therein and having a and by means of which bracket the switch is positioned at the. desired point upon the shaft wall. The block 28 is electrically-connected with an end of the line wire 23, the switch being positioned within a break in said line wire and between the broken ends thereofand theswitch is thereby adapted to break and complete the circuit of the line wlre.

The switch casing 19-is mounted upon the di-electric block 30 and is provided with 0pposite perforations 32 for the passage of the ends of the line wire 23. V The free end of the blade 21 outwardly of the boss 24 is provided with a bracket 33 of the form illus: trated in Fig. 3 and formed of di-electric material, the same being rigidly secured to said blade. The switch arm 20 has a square portion 34 slidably-mounted within the rectangular opening 35 of said bracket while an encircling spring 36 of said arm bears between the upper face of the blade 21 and the arm shoulder 37, thus normally holding the arm projecting as illustrated in dotted lines in Fig. 1. A leaf spring 38 carried by the boss 22 engages beneaththc blade 21 and normally positions the same inclined as also illustrated by dotted lines in Fig. 1, and in which position the contact blocks 25 arm 20. It will be seen that an inward.

longitudinal impulse imparted to the rod by the door slightly compresses the spring 36 during the sliding of the arm within the blade openin 35 while the engagement of the spring with the blade moves the blade against the leaf spring 38- and moves the contacts 25 and 26 into flat seating engagement with each other.

The complete operation of the device will be apparent from this description in that the closing of the door closes the electrical switch of the system at each floor landing,-

so that the car may freely operate and this closing of the circuit is automatically broken when anyone of the doors 16 is opened, as at such times the switch automatically returns to the dotted line position illustrated in Fig. 1, and the circuit being broken when any door of the shaft is open, it will be evident that the elevator will be unable to run at such times and must necessarily therefore, be positioned at such open door whenever the circuit is so broken and thus preventing persons from falling down the open shaft, it being impossible for the car to operate when any shaft door is opened, and also impossible to open any of the said doors from the outside of the shaft.

The present device is a protection to the public in preventing accidents incident to the elevator service.

What we claim as new is 1. A device of the class described, compost and blade adapted for normally separating said contacts, a di-electric bracket seswitch arm slidable within said opening, a projection spring encircling said arm and engaging the same and said blade, and a roller in the outer free end of said arm.

cured to the free end of said blade and hav ing a rectangular opening therethrough, a

2. A device of the class described comprising a support, a di-electric base secured to the said support, acasing upon said base provided with an opening therein opposite the base, a post supported by the base, a

switch plate pivoted through the said post, a stop lug upon the said post beneath the rear extension of the plate, an elevating normally positioning spring carried by the said post and in engagement with the lower surface of the said plate, a cylindrical contact supported by the base and spaced from the said post, a second cylindrical contact secured to the'lower face of the arm, a di-' electric block secured to the free end of the plate and having an opening therethrough, and an arm resiliently mounted and slidably positioned within the said bracket opening and extending outwardly through the said casing opening.

In testimony whereof we affix our signatures in presence of two witnesses.

IGNAGY SPIRADEK. STEFAN KALISZ. WLADYSLAW l VILKOSZ.

Witnesses:

Pro'ro SPIRADEK, Mrcnon'r Wrsmownm.

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