US283580A - George o - Google Patents

Description

(No Model.)

G. 0. DAW, a MBGEANISM POR RAISING LINES To THB UPPER PARTS or, BUPLDINGS. No. 283,580. Patented Aug. zii, 188s,

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GEORGE o. naw, or NEW YoEK, v r.

MECHANISM'FOR RAISING LlNES T0 THE UPPR PARTS OF BUlLDlNGS.

SPECIFICATION forming part of Letters Application filed April 6, 1833.

Patent No. 283,580, dated August 2.1, 1883.

(No model.)

To alt whom it may concern:

,Be it ,known that I, GEoReE O. Daw, of the city, county, and'State of New York, have invented a new and kImproved Mechanism for Raising Lines to the Upper Parts of Build ings, of which the following is a full, clear, and exact description.

Reference is to be had to the accompanying drawings,foriningapart of thisspeciiication, in

which similar letters of reference indicate corresponding parts in all the ligures.

Figure lis afront eleva-tion of my improvement shown as applied to a ladder.` Fig. 2 isa side elevation of the same. Fig. 3 is asectional plan view of the saine, taken through the line a" x, Fig. 5. Fig. 4 is asectional plan view ot' apart of the same, taken through the line 'y y, Fig. 5.' Fig. 5 is a sectional side elevation of the improvement, and upon alarger scale. Fig. 6 is aface view of the clamp-plate. The object of this invention is to facilitate the raising of lines to theupper parts of buildings, whereby knotted ropes, rope ladders, or

other escape mechanism can be drawn up to the said parts of buildings to provide means of descent when the ordinary passages havebeen rendered impassable.

A represents a plate, of any convenient shape and size, and which is provided with bolts B and yokes C, or` other suitable clamps, for connecting the plate A to a ladder, a telegraph-pole, or other suitable or availablesup- To the middle part of the plate A is attached a stud, D, to serve as a pivot for connecting a second plate, E, with the said plate A. In the upper part of the plate A is formed v a slot, F, which is curved upon the arc of a circle having its center in the axis of the pivot D, and which is designed to receive a pin, G, attached to the plate E, to limit the movement of the said plate E upon the plate A.

To the rear part of the outer side ofthe plate E is attached a tube, H, to receive and serve as a guide for a pole, I, which is made in sections, connected by i'errules J or other suitable couplings, so that the said pole may be made of any required length by using more or fewer sections.

To the lower forward part of the plate E is attachedv ashort tube, K, to serve as a guide to the hoisting-cord L, the lower end of which is attached to the lower end of the pole I. The upper end of the cord L is attached to and wound upon a spool, M, secured to a small crankshaft, N, which is pivoted to the plate E and to a support, O, attached to the plate E. One flange, I, ofthe spool M is toothed, to adapt it to serve as a ratchet-wheel, and the other flange, Q, is made smooth, to ada-pt it to serve as a brake-wheel.

To the plate E and support O is pivoted a pawl, R, to engage with the ratchet-wheel l?, and which is held down upon the said ratchetwheel by vits own weight. To the plate E and support O is also pivoted, by the same pin that carries pawl R, a brake-lever, S, to be applied to the brake-wheel Q, and which is held up from the brake-wheel Q Aby a spring, T,attachedto the said lever Vand to the plate E.

attached an arm, U, which is bent to one side to pass beneath the pawl R, so that the operation of pressing down the brake-lever S to apply the brake will raise the pawl R from the ratchet-wheel P.

In using the improvement, the plate A is clamped to the upper part of a side bar of -a ladder, V, raised against the building, to a telegraph-pole, or to some other available support, a rod, I, of the required length is inserted in the tube H,the free end of the cord L is attached to thelower end of the rod I, and the end ofthe cord YV to be raised is attached to the upper end of the said rod I. Then, by turning the crank N the cord L will be wound upon the spool M and the rod I will be forced upward through the tube, carrying the end of the cord XV to the desiredheight, where it is taken by the people in that part of the building and drawn upward, raising a larger rope or a rope ladder, or other suitable means for descending from the building, the end of the said ro'peor ladder being attached to the lower end of the cord XV; The pivot D enables the plate E to be so adjusted that the upper end of the rod I can be guided 'past cornices and other obstruc tions, and then swung inwardwhen the proper height has been reached.

The cord XV isdesigned to be connected with the upper end of the pole I by a loose To the forward end of the brake-lever S is IOO l scarico socket, so that it can be readily detached, and

the pole I lowered out of the way, the descent of the pole being controllcdby the brake S Q.

The loose connecting-socket may be made 5 with a hook upon its upper end, to be hooked upon the window-casing or other support to prevent the cord WV from escaping from the hands of those drawing it upward to raise the rope or ladder in their haste and excitement.

i o Having thus described my invention, I claim as new and desire to secure by Letters Patent* l. A mechanism for raising lines to the upper parts of buildings, constructed substantially as herein shown and described, and coni 5 sisting of the plate A, provided with clamps B C, the pivoted plate E, provided with the tubes I-I K and windlass M N, the pawl and ratchet-wheel R I), and the brake S Q., as set forth.

2o 2. In a mechanism for raising lines to the upper parts of buildings, the combination,

with the plate A, having clamps B C, and the pivoted plate E, having tubes H K, the windlass M N, the pawl and ratchet-wheel R l?,

25 and the brake S Q, of the hoisting-cord L and the rod I, substantially as herein .shown and described, whereby the said rod can be raised to raiseia line, and can be quickly lowered out of the way, as set forth.

3. In a mechanism for raising lines to the upper parts of buildings, the combination, with the pawl R and the brake-lever S, of the, spring T and the bent arm U, substantiallyvas herein shown and described, whereby the operation of applying the brake will raise the 35 pawlv from the ratchet-wheel and the release ofthe brake-lever will allow the pawl to again engage with the ratchet-wheel, as set forth.

4. In a mechanism for raising lines to the upper part of buildings, the combination, with the clamp-plate A, having curved slot F, of the ladder, the mechanism for raising the pole, and the pivoted plate E,having pin G, substantially as herein shown and described, whereby the movement of the said pivoted 45 plate is limited,.as set forth.

GEORGE O. DANY.

IVitncsscs JAMns T. GRAHAM, G. SEDGwrcK.-

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