US287560A - Joseph a - Google Patents

Description

(No Model.) I

. J. A. MILLER.

FIRE ESCAPE. V No. 287,560. Patented Oct. 30,1883.

' WITNESSES: 3 IN TOR a 6M BY v ATTORNEY UNITED STATES JosErH A. MILLER, OF New YoRK, N. Y. 7

Fl RE-IESQAPE.

SPECIFICATION forming part. of Letters Patent No. 287,560, dated October 30, 1883. Application filed Apri130,1883. (No model.)

To all whom it may concern:

Be it known that I, J OSEPH A. MILLER, of the city, county, and State of New York, have invented certain new-and useful Improvements in Fire-Escapes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates, especially, to that class of fire-escapes secured within the building at or near the windows, and arranged to below ered therefrom in case of fire, and has for its object the production of a device which shall be cheap and simple to construct, not liable to get out of order, and which may be put out of sight when not in use, atthe same time requiring but an instant for adjustment to place when required.

My invention consists, essentially, in the combination, with the side chains or ropes, of rungs having pins and clamping-nuts, the two lower rungs being provided with a bolt for drawing the side chains or ropes rigid; and my invention also involves certain other novel and useful combinations or arrangementsof parts and peculiarities of construc tion and operation, all of which will be hereina'fter first fully explained, and then pointed out in the claims.

In the drawings, Figure 1 is a view'in elevation of my improved fire escape ladder. Fig. 2 is an enlarged View of one style of rung, showing the method of securing it to the side chains. Fig. 3 isia view in elevation of the tightening mechanism. Fig; 4 is an enlarged view of a round rung, and Fig. 5 is a vertical sectional longitudinal view thereof.

Like letters of reference, wherever they occur, indicate corresponding parts in all the figures.

A are the side chains of the ladder or escape.

B are the rungs, made of any approved material. Fig. 2 illustrates the method of securing the rungs to the side chains, where they are made flat. An oblong perforation, C, is made in each extremity of the rung, and the s1de chains are passed therethrough, being securely held in place by a bolt or pin,'D. Figs. 4 and 5 illustrate a round rung. In this construction a pin, E, is passed through the rung, forming a shoulder against which the chainlink A finds a bearing. The extremity of the rung is screw-threaded, and the whole is securedtogether by a clampingnut, F, engaging with said screw-thread. I

G arerings attached to the lower extremi- I ties of the side chains, and Hare hooks affixed to the sidewalk or other convenient point be. neath the window.

Between'the two lower rungs of the ladder is placed a bolt, I, having a head, J, and screw-thread K. The lower end of the bolt passes through a perforation in thelowermost rung, and the screw-threaded end of the bolt engages with a correspondinglygscrew-thread- 'A,'of the rungs B, having pins E and clamping-nuts F, scribed.

2. In a fire-escape of the characterv herein substantially as shown and derungs of the ladder, secured to the side chains, as set forth, of the screwithreaded bolt I, having head J and handle M, said bolt being adapted and arranged to draw the side chains taut, substantially as shown and described.

3. Side chains, A, rungs B, bolt I, bearing a handle, M, rings G, and hooks H, the whole 8o specified, the combination, with the two lower combined and arranged to operate substan- I tially as shown and described.

' JOSEPH A. MILLER. Witnesses:

GEORGE W. MORRILL, ALONZO G. OHIcHEsTER.

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