US228647A - Fire-escape ladder - Google Patents

Description

(ModeL) 2 Sheets-Sheet, '1.

J. P. H- KING.

Fire-Escape Ladder. v No. 228,647. Patented June 8,1880.

WITNESSES: g VENTOR:

ATTORNEYS.

(MadeL) 2 Sheets-Sheet 2.

J. F. H." KING. Fire-Escape Ladder.

No; 228,647. Patented Jun- 8,1880.

f TNESS'ES: INVENTOR:

f/w/m, 7 'dd wio/V" I BY I ATTORNEYS.

mPErEns. PnomLmloGflAPuER, wtsummon. 04 Q UNITED STATES PATENT OFFICE.

JOHN F. H. KING, OF PORT RICHMOND, NEW YORK.

FIRE-ESCAPE LADDER.

SPECIFICATION forming part of Letters Patent No. 228,647, dated June 8, 1880.

Application filed March '2, 1880.

To all whom it may concern:

Be it known that I, JOHN F. H. KING, of Port Richmond, in the county of Richmond and State of New York, have invented a new and Improved Fire-Escape, of which the following is a specification.

My invention relates to the class of portable fire-escapes which are moved from place to place upon a truck and elevated at the place of use.

The invention consists in a mast mounted upon a truck, so as to be raised and supported in a vertical position ,for sustaining a swinging ladder when the escape is in use, and to be lowered with the ladder into a horizontal position on the truck for transportation.

The details of construction are more fully set forth hereinafter.

In the accompanying drawings, Figure 1, Sheet 1, is a sectional elevation of my fire-escape in position for use. Fig. 2 is a section transversely of the truck, showing the connection of the mast-slide to the truck and the truck-braces. Fig. 3 is a View showing the connection of the ladder to the mast. Fig. 4, Sheet 2, is an elevation, showing the fire-escape in position for transportation.

Similar letters of reference indicate correspondin g parts.

The supporting-truck a is mounted on wheels and carries a sliding block, b, fitted to move in grooves c in the sides of truck a, to which block bis connected one half of the platform (I. The other half of d is fixed to the truckc, and when in position, as shown in Fig. 1, the mast 6 passes through the center of platform (I, through block b and truck a, to the ground, where its end rests in a step, f.

g 9, Fig. 2, are braces hinged to d, and extending to the ground at each side of the truck to steady it. h h are ropes or chains from braces g to step f, for retaining the braces in position. 2' is a ladder fixed to mast e, extending from platform cl to the cross-tree 7c of the mast, and having fitted to its lower end the shafts of barrels Z m, that are used for elevating the ladder and raising and lowering the basket, at hereinafter described. it is the main ladder, hung by trunnions 0 on cross-tree k, so that about two-thirds of its length will be (ModeL) above the mast when elevated. It is raised into the position shown in Fig. l by ropes p, which are connected to the mast a by alink at q, pass through links at the lower end of ladder n, and from thence around barrel l, so that by winding ropes p on the barrel l the ladder n will swing on its trunnions to a more or less elevated position.

At the lower end of ladder n is a ladder, q, hung upon a bar, 4", that is fitted to slide in grooves in the sides of ladder a, so as to be drawn down to rest on the ground when the escape is elevated. At the upper end of ladder n is a sheave, 8, through which passes a rope, t, from barrel m, and u is a basket hung on rope t, which can be used to lower persons from windows.

The ladder n is braced by guy-ropes attached at its ends and passing through stretchers c, that extend from the trunnions 0, which stretchers may be turned down by hand parallel with ladder at when it rests on the truck. When the mast is raised clear of the truckfloor the hoisting-rope is slacked and the foot of the mast started in the right direction by suitable mechanism.

To lower the mast c and ladder n, I make use of a Windlass, w,journaled on truck a and carrying a rope, 10, that passes down through block b and mast e, and is connected to the fixed portion of platform 61 above block b. By winding rope w the mast and ladder are raised until the end of the mast is above the lower side block, b, when rope w is slacked to permit the block b and one half of platform at to slide upon the truck, the foot of the mast moving with them, and its other portion lying upon the fixed part of platform d. At the same time the Windlass l is turned to slack ropes 19 until the mast and ladder lie upon the truck in the position shown by Fig. 4. The braces g g are then to be raised upon the truck-platform, pushed inward, and the apparatus is ready for transportation, and can be elevated by a reversal of the operation.

I am aware that the swinging stretchers for guy-ropes and the Windlass-rope and basket are not new in fire-escapes; but

-What I claim as new and of my invention 1s-- 1. The combination, with mast e, of the ladder n, trunnion at top of said mast, and the ladder q, sliding in said ladder n, as and for the purpose specified.

2. In a fire-escape, the combination, with a truck a, of a mast c, swinging ladder 02, Windlass l, and rope 19, arranged for operation substantially as described.

3. The combination, with the mast 0, ladder n, and truck a, of the sliding block 1), platform (I, Windlass w, and rope 20, substantially as and for the purposes set forth.

4. The braces g, step f, and ropes or chains h, in combination With the truck a and mast a, substantially as and for the purposes de- 15 scribed.

5. The combination of the mast e and fixed ladder i, having Windlass w, with the ladder n, having top pulley, s, a rope being made to pass from Windlass and over said pulley, as 20 and for the purpose specified.

JOHN F. H. KING.

Witnesses O. SEDGW'ICK, GEO. D. WALKER.

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