US596198A - Fire-escape - Google Patents

Description

(No Model.) I' l f W. C. WILLIAMS.

PIRE ESCAPE. N0. 596,198.4 l Patented D60. 28,1897.

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Ni'rnn STATES WILSON C. VILLIAMS, OF UTIOA, NEW YORK.

FIRE-ESCAPE.

SPECIFICATION forming part of Letters Patent No. 596,198, dated December 28, 1897.

i Application filed April 12, 1897. Serial No. 631,678. (No model.)

To a/ZZ whom it may concern:

Be it known that I, WILSON C. VILLIAMS, of Utica, in the county of Oneida and State of New York, have invented certain new and useful Improvements in Fire-Escapes; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form part of this specification.

Figure l shows a sideelevation of my im- Fig. 2 shows parts ofthe device, partially in section, in perspective. Fig. 3 shows one of the parts of which the body of the device is formed, also in perspective, without being in section in any part. Fig. 4 shows a section taken on line A B of Fig. 5, showing the inner face view of the parts shown. Fig. 5 shows a section taken ou a vertical central line, omitting the friction-posts and bar in the lower end of the device. Fig. 6 shows a section of the completed device. Fig. 7 shows details of a sheave having projecting arms on one side. Fig. 8 shows the same as Fig. 7 on a quarter-turn from the position shown in Fig. 7. Fig. 9 shows a side elevation yis of a vibrating detent employed in the construction. Fig. 10 showsfa plan view of the same. Fig. 1l shows an end view.

Referring to the reference lett'ers and figures in a more particular description of the device, l and 2 indicate the two parts of the casing of the device. The upper portion of the casing part 2 is circular and provided with an internal serpentine groove 3, formed between the annularprojections 3 and 3h( This annular groove 3 is adapted to receive the projecting ends 4 4 of the vibrating detent 4.

The circular head portion of the device is adapted to receive the sheave 5 with its projecting arms 5, which projecting arms are adapted to receive the body portion of the detent 4. The'casing parts are held together at their upper ends by a transverse bolt 6, Which passes through an openin g in the sheave 5 and through the opening 4b in the detent 4. The opening 4b is rounded out at either side, as shown in Figs. 9 and lO, so as to allow the detent to vibrate freely in following the serpentine groove in the casing. The lowerpor- -tion ln of the casing part 1 furnishes an out- .cross-bars 7a, three being shown in the drawings. This friction device may be secured in position by rivet-like projections d on the ends of the cross-bar portions engaging in openings, as b, in the walls of the casing, and these rivet portions may be headed or not, as desired.

The rope or cord A employed in connection with the device is entwined through the friction device, as shown, and passed around the sheave 5 and out of the outlet portion of the device and through the friction device again, a double rope or cord being employed.

The device is provided with a bail 8, which may consist of two parts formed on each part of the casing, as E5a and S", as shown.

`In use the device operates as follows: The escape is suitably secured by the bail or otherwise in any desired position for use, as to the outside of a building or immediately inside of awindow of a building, where itwould be convenient for use. A person may then grasp one of the two parts of the cord or rope entering the device and throw his weight thereon, and as one part runs out the other runs in through the friction device, consisting of the bar 7 and the cross-bars 8a, and thence around the sheave and out again through the friction device and causes the sheave to revolve. The frictioncaused by the friction device is sufficient to cause the cord or rope to bite sufficiently on the sheave to cause it to revolve without Vany material slipping of the cord or rope. As the sheave 5 revolves it causes the vibrating detent 4 to move around with it by reason of the arms 5a 5ainclosing the detent, as shown. The detent following the serpentine groove in theshell retards the movement of the sheave and thus regulates the speed with which the rope will run out. The amount of weight or load on the rope does not make any material difference, for the reason that the friction between the inner sides of the arms 5a and the sides of the detent 4 increases as the weight on the rope increases, and as it has to vibrate in following the serpentine groove under the influence of this friction the speed is regulated without reference to the load.

In order to enable the detent Llto be introduced into the casing portion 2, there is provided in the shell an opening fr, through which one of the projections i niay be temporarily projected, while the other projection fl of the detent is gotten into line with the serpentine groove, when the detent is moved into its central position in the circular portion of the casing, and a bolt prevents it from at other times becoming engaged with or projecting through the opening w.

It is is evident that changes and inodiiications in and from the construction as illustrated and described may be inade Without departing from the equivalents of my con struction.

1What I claim as new, and desire to secure by Letters Patent, is-

I. In a re-escape device a casing having a serpentinel annular groove, a vibrating detent running in the groove and a slieave having arms embracing the detent, substantially as set forth.

2. In a fire-escape device a casing having an annular serpentine groove and an outlet,

scenes a vibrating detent ruiming in the groove, a sheave having arms receiving the detent, substantially as set forth.

8. In a fire-escape device a easinghaving a crooked channel around its interior face, a sheave, a vibrating detent and means for connecting the sheave and detent, substantially as set forth.

4t. In a fire-escape device, the combination of a shell havin a serpentine annular groove and an outlet portion, a vibrating detent hav ing projections engaging in the serpentine groove, a sheave having arms embracing the dctent and a friction device in the outlet portion of the casing, substantially as set forth.

5. The combination in a re-eseape device of a easing having a crooked groove 3, a vibratin g detent a having projections engaging in the groove, a sheave having projecting arms extending upon either side ofthe deent, and a rope friction device, substantially as set forth.

In witness whereof I have affixed my signature in presence of two witnesses.

VILSON C. WILLIAMS.

Witnesses:

l). ll. COLEYRONE, E. W. JONES.

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