US925462A - Elevator. - Google Patents

Description

G. DEVOS.

ELEVATOR.

APPLIOATION FILED SEPT. s, 1907. 925,462.

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Inventor. 8,26 00 6 Patented June 22, 1909.

G. DEVOS.

ELEVATOR. APPLIUATION FILED SEPT.6, 1907.

Patented June 22, 1909.

2 SHEETS-SHEET 2.

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- sides with ears 3, which bear on the side faces UNITED s ATEs PATENT, oEEroE.

CHARLES DEVOS, OF EAST ST. LOUIS, ILLINOIS.

ELEVATOR.

To all whom it may concern:

; Patented June 22, 1909.

jranged transversely thereon, between the Be it known that I, CHARLES Dnvos, a citi-- j plates 4, is a timber 8; and arranged-for verzen of the United States, and resident of East St. Louis, Illinois, have invented certain new and useful Improvements in Elevators, of

which the following is a specification contain-,

ing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part thereof.

My invention relates generally to improvements in elevators, and more particularly to a safety device for elevators, which device is automatically thrown into action whenever the hoisting cables of the elevator break, thereby instantly stoppin the elevator cage and preventing accidents rile to the dropping of a cage to the bottom of the shaft.

To the above pur oses, my invention consists incertain nove features of construction and arrangement of parts, which will be hereinafter more fully set forth, ointed out inthe claim, and illustrated in t e accompanying drawings, in which c Figure 1 is a front elevation of an elevator cage equipped with my improved safety device; Fig. 2 is a plan view of an elevator cage constructed in accordance with m invention; Fig. 3 is a side elevation of t e upper portion of the cage, and showing the gripping devices of the safety device; Fig. 4 is an enlarged transverse section taken on the line 4-4 of Fig. 2; Fig. 5 is an enlarged transverse section taken on the line 5-5 of Fig. 2.

Referring by numerals to the accompanymg drawings :1 designates the upright timbars or guides which are arran ed on opposite sides of the shaft or hatoiway, which guides are preferably constructed of wood and arranged for operation between said guidesis the elevator cage 2, provided on its ofthe guides 1 while the elevator is in operat'ion.

of, are plates 4, in which are formed'the alined pairs of journal bearings 5, and arranged in said bearings are the parallel rock shafts 6, the ends of '-which project beyond the sides of the elevator cage 2, adjacent the guides 1, and fixed on said 'proj ecting ends by,

means of set screws and projpctinig downwardly therefrom are wedge s ape adjust- 1 able and removable gripping members 7, the lower ends of which are pointed and provided with teeth 7.

Fixed to thetop of the cage Q and arj Fixed on top of the cage, at the sides there-o tlcal movement through theopening in the center of said timber is the lower portion of a vertically disposed bar 9, on the ower end" bles 12. site sides of the upper are the upper ends of lin 13, the lower ends of which are pivotally connected to the outer ends of arms 14, the inner ends of which are rigidly fixed in any suitable manner to the central ortions of the rock shafts 6.

Fixe in each shaft, adjacent the plates 4,

are the outwardly pro eating arms 15, and fixed on top of the tim er 8 are leaf springs 16, the free outer ends of which are bent '75 downward and bear immediately upon the.

outer ends of the arms 15. j While the elevator is in use, the bar 9 is' maintained at its up er limit of movement y reason of the weight of the cage suspended from the cables 12" relative the timber 8 which pass around the pulleys 11, andby reason of the connecting links and arms 13 and 14, the rock shafts 6 are held in such po-- sitions as that the lower ends ,of the gripfping members are held away from the side of the guides 1; and, while so held, the arms 15 bear against the under. side of the springs 16.

Should the hoisting cables 12 break, the

upper pull on the bar 9 is re1iev'ed,'and the gravity thereof, together with the ressure of the ends of the springs-16 against the 1' arms 15 causes said ar 9' to move down-- ward; and by reason of the connecting links 13 and arms 14, the shafts 6 are rotated in such a manner as to cause the pointed lower H ends of the grippingmembers 7 to engage the op osite si e faces of the upright uides 1;

an as soon as this action takes-place, the 0 cage 18 supported and held against further downward movement.

A safety attachment for elevators constructedin accordance with the foregoing description is sim le, inexpens1ve,- oompr1ses 0 a minimum num er of parts, .and eanbe easily ap lied to all formsof elevators'or ho sts ut izing cables, and thedevice is 'instantly and automatically thrown into opera tion wherever the hoisting cable is broken. H

I claim v The combination with a pair of vertlcallydisposed guides and an elevator cage arranged for operation between said guides, of

' a timber transversely arranged on top of the elevator cage, bearings fixed on top of the.

cage on opposite sides of the timber, a pair of rock shafts mounted in said bearings, adjustabie gripping members mounted on the ends of the s alts adjacent the side faces of the ings, fiat springs fixed to the timber and bearing on the outer ends of said arms from above, a block arranged for vertical movement through the center of the transverse timber and to which block the elevator cables are connected, links pivotally connected to the block, and arms fixed to the shafts, the outer ends of which arms are pivotally connected to the lower ends of the links.

In testimony whereof, I have signed my name to this specification, in presence of two subscribing witnesses.

CHARLES DEVOS. Witnesses M. P. SMITH, E. L. WALLACE.-

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