US1139570A - Elevator safety device. - Google Patents

Description

F. PASTOR.

ELEVATOR SAFETY DEVICE.

APPLICATION FILED SEPT. 8. 1944.

1 139,,57@o 1 Patented May 18, 1915.

THE NORRIS PETERS C0. FHOTO-LITHO.. WASHINGTON, D. c

WETED TATE PAEM FRANK PASTOR, 0F CLEVELAND, OHIO, ASSIGNGR OE ONE-HALF TO JOHN PATI'NKA, OF NESQUEHONING, PENNSYLVANIA.

ELEVATOR SAFETY DEVICE.

Specification of Letters Patent.

Patented May 18, 19115.

Application filed September 8, 1914. Serial No. 860,631.

To all whom it may concern Be it known that I, F RANK Pas'ron, subject of the Emperor of Austria-Hungary, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Elevator Safety Devices, of which the following is a specification.

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

The primary object of the invention is to provide an automatic means for supporting the elevator car within the shaft in the event of a severing of the hoisting cable therefor, and thus preventing the drop or fall of the car to the bottom of the shaft and likewise obviating injury to the contents of the car, either passengers or merchandise.

A further object is to provide shiftable abutments at spaced distances within an elevator shaft, and automatic means within the shaft for shifting the same into operative positions beneath the car in the event of a breaking of the hoisting cable.

A still further object is to provide a complete automatically operable car catching device solely carried by the shaft, and without any additional mechanism carried by the car.

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

In the drawings forming a part of this application and in which like designating characters refer to corresponding parts throughout the several views, Figure 1 is a side elevation of the elevator shaft guiding frame with a car therein and illustrating the device, a portion of the frame being broken away, the device being in its inoperative position Fig.2isasimilar view showing the hoisting cable as broken, and the de vice in its operative position. Fig. 3 is a horizontal transverse sectional view through the side frame of the shaft and showing the device and the car in top plan view, and Fig. 4 is a perspective view of the catch operating device with the side rods thereof broken away.

Referring more in detail to the drawing, the guiding frame for the elevator car 10 is illustrated consisting of the upright timbers 11 which are positioned upon the opposite sides of the elevator shaft being supplied with guiding strips 12 with which the brackets 13 which arecarried by the car have a sliding engagement. A hoisting table 14: is secured to the top of the car and passes over a central pulley 15 within the shaft and thence over a side pulley 16 and downwardly to the hoisting motor, (not shown).

The timbers 11 are provided upon their alternate sides with vertically extending rods 17 which are journaled in brackets 18 carried at spaced distances upon the said timbers, the said rods being also capable of slight vertical movements. Each of the rods 17 is provided with a plurality of abutments or rest blocks 19 secured thereto and normally positioned outwardly of the path of travel of the elevator car as shown in Fig. 1, while a spring 20 is provided encircling the rods 17 so as to engage the lower faces of the abutments 19, the said springs having their lower ends seated upon fixed brackets 21 carried by the said timbers 11, whereby any downward movement of the said abutments is slightly cushioned.

The rods 17 are each provided adjacent the tops thereof with triangular actuating plates 22, the said plates being positioned slightly out of horizontal alinement with each other and projecting slightly inwardly of the shaft, one of said plates having its oblique edge 23 extending upwardly and inwardly while the corresponding face of the other plate extends downwardly and inwardly, the last named plate being arranged upon a plane slightly beneath the plane of the other plate.

The top cross timber 24 of the shaft frame is provided with a central depending bracket 25 having an angular lever 26 pivoted there to. An arm 27 is carried by the said lever and is supplied with a grooved pulley 28 at the free end thereof, which pulley is adapted to ride upon the cable 1% at a point between the pulleys 15 and 16 over which the cable passes, the cable being normally stretched taut by the weight of the car, this positioning of the pulley 28 in engagement therewith, normally retains the lever 26 horizontally and with its oppositely extending angular portions 29 resting in contact with the rod 17 and in engagement with the plates 22 thereof, at the point where the inclined faces 23 thereof merge with the saidrods.

An expansion spring 30 is interposed be tween the cross-beam 24: and the upper side of the pulley arm 27 of the lever whereby V partial revolution on the part of the rod 17 carries the abutments 19 inwardly to positions directly beneath and within the line of travel of the car 10. It will therefore be apparent that a severing of the hoisting cable 1 1 releases the lever 26 which results in the operativepositioning of the abutments 19, upon which the car falls and is suspended asillustrated in Fig. 2, the springs 20 slightly'cushioning the car when so caught by the abutments.

While the form of the invention herein shown and described is what is believed to be the preferred embodiment thereof, minor changes may be made in the details of the invention without departing from the spirit and scope thereof as set forth in theclaims. What I claim as new 1. An elevator safety device comprising in combination with the shaft timbers and a car with its hoisting cable arranged in connection therewith, vertically shiftable rods journaled. upon alternate sides of said tim- Gopies of this patent may be obtained for matic actuating means for said rods pivoted to said timbers and engaging said cable 7 when the latter is unsevere v 2. An elevator safety device, comprisingoppositely positioned rods journaled for partial rotation, a car vertically shiftable between said rods, a hoisting cable for said car, abutments carried by said rods nor-' mally outwardly of the path of travel of the car, a pivoted levernormally engaging said cable with said lever z-horizontally positioned, triangular actuating plates carried by said rods and turned slightly inwardly out of horizontal alinement with each other and shiftably engageable with the opposite 7 end portions of the said lever, and an ex pansion spring engaging said lever whereby said lever is tilted upon a severing ofthe said cable. r r

3. A safety device solely carried by elek abutments, engaging plates adjacent theupper ends of said rods, apivoted angular lever normally horizontal and contacting said plates, and an expansion means'engaging said lever whereby the latter is tilted upon a severing of the hoistingcable of the elevator whereby the said abutments inwardly project withinthe line of movement of the elevator car.

In testimony whereof I my signature in presence of two witnesses. t.

FRANK PAST R. Witnesses r Tom MALISKA, JUSTA' PASTOR.

five cents each, by addressing the Gommissioner of- Patents,

Washington, D. G. V

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