US451399A - Safety device for elevators - Google Patents

Description

(No Model.) 2 SheetsSheet 1.

J. COLLIER.

SAFETY DEVICE FOR ELEVATORS. NO. 451,399. I Patented Apr. 28, 1891.

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A TTORNE K 2 Sheets-Sheet 2.

(No Model.)

J. COLLIER. SAFETY DEVICE FOR ELEVATORS.

No. 451,399. Patented Apr. 28, 1891.

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ATTORNEY.

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NITED STATES ATENT FFICE.

JOSEPH COLLIER, OF PIGEON RUN, OHIO.

SAFETY DEVICE FOR ELEVATORS.

SPECIFICATION forming part of Letters Patent No. 451,399, dated April 28, 1891.

Application filed January 12, 1891. Serial No. 377,472. (No model.)

To aZZ whom it may concern:

Be it known that I, JOSEPH COLLIER, a citizen of the United States, residing at Pigeon Run, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Safety-Catches for Elevators; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters of reference marked thereon, in Which- Figure l is an isometrical View of the car and its different attachments, showing portions of the guide-bars. Fig. 2 is a view of the elevating-head, showing the elevatingchains attached thereto, together with the spring-bars and portions of the rock-bars. Fig. 3 is a view showing the end of the elevatinghead, together with its different attachments.

The present invention has relation to safety-catches for elevators; and it consists in the different parts and combination of parts hereinafter described, and particularly pointed out in the claims.

Similar letters of reference indicate corresponding parts in all the figures of the d rawings.

ill the accompanying drawings, A represents the guide-bars, which extend the entire length of the elevator-shaft or that portion of the elevator-shaft where it is designed to operate the car or cage.

The bottom or lower ends of the guide-bars A may be securely attached to the bottom 13 or to other suitable frame-work.

The car C may be of the form shown in the drawings, or it may be of any other desired form, reference being had to the style or kind of elevator designed to be used. The elevating-head D is located a suitable distance above the car and is adjusted to slide on the guide-bars, suitable grooves being formed in the ends of said elevating-head to receive the inner portions of the guide-bars A. To the elevating-head D are securely attached the top or upper ends of the bars a, which bars diverge as they extend downward, and to the bottom or lower portions of these bars Ct is securely attached the car 0, thereby securely attaching the car 0 and the elevating'head D together. For the purpose of strengthening the connection of the elevating-head D to the car 0 the center bars I) are provided, said center bars being securely attached to the elevating-head and to'the car.

The cross-bars c or their equivalents are attached to the bars Ct and b and are for the purpose of providing a means for piyotally connecting the grip-bars E, which grip-bars are located substantially as illustrated in Figs. 1 and 3, and are so located and ad uSted that the inner ends of said grip-bars will press the sides of the guide-bars when the elevating rope or cable breaks, the in ner ends of said grip-bars being held away from and out of contact with the guide-bars A when the car 0 is being elevated or lowered, as hereinafter described. Y

The rock-bars F are pivotally attached to the top or upper ends of the bars a, or their equivalents, and are located on the top or upper side of the elevating-head D; but it will be understood that said rock-bars F may be located at any other desired point and the object hereinafter described accomplished. The ends of the rook-bars F are provided with the arms (I, and to the outer ends of said arms are pivotally attached the connecting-bars cl. These connecting-bars d are pivotally attached to the outer endsof the grip-bars E, and are located substantially as shown in the drawings.

The rock-bars F are provided with the arms f, which arms are securely attached to said rock-bar in any convenient and well-known manner. The outer ends of the arms fare attached to the yokes g, and to the lower portions of these yokes g are hooked or otherwise attached the bars g',the bottom or lower ends of the bars g being connected to the spring-arms g The springs h are attached to the elevating-head D by means of the clamps G, said clamps being securely bolted or otherwise attached to the elevatingdiead D. It will be understood that arms extend from the springs h and are located between or within the clamps, as illustrated by the dotted lines, Fig. 1.

In Fig. 1 but one clamp is shown; but it Wlll be understood that one clamp is to be located upon each side of the elevating-head D. To the elevating-head D are securely attached the chains It by means of the eyes II or their equivalents. The top or upper ends of the chains II are attached to the ring I, to which ring is securely attached, in any convenient and well-known manner, the elevating rope or cable, which elevating rope or cable is operated in the ordinary manner. The center chain .I is attached at its top or upper end to the ring I and its bottom or lower end attached to the elevating-head D by means of the eye J or its equivalent.

The center chain .I is provided with the bar 7.1, which bar is attached to the center chain by being passed through one of the links of said chain or in anyotherconvenicnt or well known manner. To the bar k are attached the top or upper ends of the chains 7a, which spring-chains extend downwardly and their bottom or lower ends attached to the yokes g.

The chains II, the center chain J, and the chains 7;. are so adjusted as to length that when the elevating rope or cable is held tight by the weight of the car or cage the chains it" will elevate the free ends of the arms], and thereby elevate the outer ends of the grip-bars E by means of the rock-bars I and the connecting-bars (1, thereby holding the inner ends of the grip-bars E away from and out of contact with the guide-bars A.

In the event the elevating rope or cable breaks, the springs 7L will cause the armsf to be drawn down by means of the spring-arms g and the bars g, which causes the arms (Z to move downwardly, and thereby force the outer ends of the grip-bars E downward and elevate the inner ends of said grip-bars,whieh causes the inner ends of the grip-bars to come in contact with the faces of the guide-rails A, and thereby lock the car or cage.

For the purpose of preventing" the grip-bars from turning so as to bring their inner ends above a horizontal line with their pivotal point, the stops L are provided, which stops are securely attached to the bars a or their equivalents.

In the drawings chains are shown connecting the elevating-head; but it will be understood that the equivalents maybe used without departing from the nature of my invention, as it will be understood that any other flexible connection may be used; or independent rods might be used and the same object acconuiilished.

It will be understood that chains maybe used in the place of the bars q, if desired.

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

1. The combination of the guide-rails A, the car or cage 0, the elevating-head D, fixed to said car, the rock-bars E, provided with the arms (.7. and f, the chains II, the center chain 3, the chains is, the springs 71/, provided with the arms 9 the bars 9, the connecting-bars d, and the pivoted grip-bars E, substantially as and for the purpose specified.

2. The combination of the guide-rails A, the car or case (I, the grip-bars E, the connectingbars at, the rock-bars F, provided with the arms (Z and f, the springs h, the chains II and .I, and the chains In, and the stops L, substantially and for the purpose specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

JOSEPH COLLIER.

lVitnesses:

.TonN COLLIER, Cans. M. S'ITANDS.

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