US142409A - Improvement in fire-escape ladders - Google Patents

Description

w. w. PARSONS,

Fire-,Escape Ladders.

N0. 142,409. PatentedSeptem|uer2,873.`

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WALTER W. PARSONS, OF STA'NS'IEAD, CANADA.

IMPROVEMENT `IN FIRE-ESCAPE LADDERS.

Specification forming part of Letters Patent No. 142,409, dated September 2, 1873 application led July 19, 1873.

To all whom it may concern:

Be it known that I, WALTER W. PARSONS,

. of Stanstead, Province of Quebec, Canada,

have invented a new and Improved Fire-Es cape, of which the'followin g is a specification: The invention consists in the improvement of nre-escape ladders, as hereinafter described and pointed out in claim, to wit, of a novel mode of fastening the bars to the ropes by which they are suspended.

Figure lis a front elevation of my improved refescape ladder. Fig. 2 is a sectional elevation on the line wm of Fig. l. Fig. 3 is an enlarged detail sectional view of the bar and mode of fastening taken on the line y y, Fig. l, and Fig. 4. is a section on the line z z of Fig. 3.

Similar letters of reference indicate fcorresponding parts. p

A represents a pair of suspending ropes, With cross-bars B at intervals, constituting a ropeladder. At the lower end of the ladder a hook, C, is attached for fastening it to the ladder to the Window-sill I or other suitable part of the building, in the manner indicated in Fig. 2. The crank K is jointed to the roller D, as shown at L, and the project-ing part of the roller is grooved, as indicated by the dot-V ted line. M, so that the crank can be folded down in the roller compactly for storing the ladder.

For securing the cross-bars B to the ropes cheaply, Ihave a hole, N, bored through them near each end, and a slot, O, extending from the ends to said holes, so that the latter can be contracted a little to bind the rope so as to be held fast; and Iv drive slightly-conical ferrules P on the bars, which are slightly tapered from the holes to the ends to so bind the bars upon the ropes, whereby the said bars will be firmly held in their places. This mode of fastening the bars is very effective, and at the same time simple and cheap.

These fire-escape ladders can be constructed cheaply. space in a room, and they can be readily adjusted when required for use.

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

The method of fastening the bars to the ropes by the holes N, slits O, and tapering ferrules P, substantially as specified.

' W'ALTER YV. PARSONS.

Witnesses:

L. K. BENTON, F. S. A. PELLETIER.

They can also be stored in a small

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