US56006A - Improved fire-escape - Google Patents

Description

lUNITED STATES PATENT OFFICE IMPROVED FIRE-ESCAPE.

Specification forming part of Letters Patent No. 56,006, dated July 3, 1866.

To all whom it may concern.-

Be it known that I, JAMES A. CHAMBERS, of Ogdensburg, in the county of St. Lawrence and State of New York, have invented a new and useful Improvement in Ladders known as Fire-Escapes; 7 and I do hereby declare that the following is a full, clear, and exact description ofthe same, reference being had to the annexed drawings, made part of this specication, in which- Figure l is a perspective View. Figj2 is a detached section, showing the mode of arranging the springs and catches for securing they sections. .EL

The same letters in both figures refer toi; identical parts.

A represents a box as the bed of wagon, Ste., in which the ladders are carried. To the sides of the box timbers B are attached firmly and stayed by guy-rods B. The door of the box or bed A is formed ofa series of rollers, the journals of which are inserted in the sides of the box, which is represented in Fig. l as broken away. On the face of these rollers the sliding frame D is laid7 moving freely from end to end of the box. The ladders rest on this frame. The ladder is composed of a number of sections, E E, hinged together by the hinges L, which are attached alternately on the front and back, so that the ladder maybe folded section on section in the box and on the frame D. The ladders are raised by a winch operating the ruiter-wheels G and G. The shaft of G' passes through t-he timber B, and has on its center the spurwheel H, working in a slot cut for the purpose in the timber B. This spur-wheel is geared into the rackF on the sides of the section E.

K is a brace by which the axle of the Wheel G supported. O O are hooks by which the ing. By turning the winch I the upper section will be raised, the second and third sections being more or less raised, and the frame D slid on the rollers to conform to the movement of the sections. When the foot of the first section has passed the flanges P (of which there are'four on the edge of the timbers B) in front and rear, the second one, followin these anges, forces it at once to assume direction in line with the first, the frame D yielding easily to the movement.

M is a catch,shaped as shown in Fig. 2, actuated by a spring, which forces the notched a. Kend over a pin, N, passing through the base of the next section above, as shown. rllhis catch secures the ladders and prevents their falling over. Thus the several sections similarly constructed are successively elevated. They are lowered by reversed means.

Having fully explained the construction and operation of my improved tire-escape, what I claim as my invention, and seek to secure by Letters Patent, is-

l. The combination of the rollers C, sectional ladder E, hinged as described, and sliding frame D, substantially as and for the pur pose set forth.

2. The supports B, with the flanges l?, in .combination with the sectional ladder E and the gearing for elevating the same, the parts being severally constructed and arranged for use substantially as and for the purpose set forth. A

In testimony whereof I have signed my name to this spccication in the presence of two subscribing witnesses.

J. A. CHAMBERS.

top of the ladders may be secured to the build- D. P. HoLLowAY.

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