US259593A - And hermann a - Google Patents

Description

UNITED STATES PATENT EErcE.

HENRY B. SHERIDAN, OF CLEVELAND, OHIO, AND HERMANN A. GORN, OF NEW YORK, N. Y.

ELECTRIC SAFETY-ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 259,593, dated June 13, 1882.

Application filed December 2, 1881. (No model.)

Reference is to be had to the accompanying drawings,formin g part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1, Sheet 1, is a sectional elevation of our improvement, taken through the line w x, Fig. 2. Fig. 2, Sheet 1, is a plan view of the saine, the worm bars and guide bars being shown in section. Fig. 3, Sheet 2, is a sectional elevation taken through the line y y, Fig. 4. Fig. 4, Sheet 2, is a sectional plan View of the same, taken through the line ze, Fig. 3. Fig. 5, Sheet 2, is a sectional plan view of the flanged guide-bar andtheinsulated flan ged conductingbar, and showing a guide-roller and an electric brush and screw-post. Fig. 6, Sheet 2, is a side elevation of the same.

The object of this invention is to promote sccurity in elevators.

The invention consists in the combination,

with the well provided with racksin diagonally- Y opposite corners and the electric motor, of the car, the vertical shaft provided with worms F, pinions H, and journaled in bearings in diagonally-opposite corners, thehorivzon tal sh aft, and the gearwheels; also, in the combination, with the car, the electric motor, and the drivinggearing, of the clutch, the operating-levers, and connecting-rods, as hereinafter described.

A represents the well, and B the car, of an elevator. The ear B is centered in the well A, and caused to move up and down freely by the anged guide-rollers C, which are pivoted to supports attached tothe diagonally-opposite corn ers ofthe said car and roll upon the flanges of the bars D, secured in the opposite diagonal corners of the well A. In the other diagonal corners of the well A are secured racks E, having screw or worm teeth formed upon them to receive the threads of the endless screws or worms F, attached to the ends ofthe shafts Gr,

which revolve in bearin gs secured to diagonal- 1y-opposite corners of the car B.

To the upper ends of the shafts Gare attached beveled-gear wheels H, the teeth of which mesh into the teeth of the beveled-gear wheels I, attached to the ends of the sh aft J. The shaft J crosses the upper part of the car B diagonally and revolves in bearings attached to the said car. Upon the middle part of the shaft J are placed two loose beveledgear wheels, K, which have clutch-teeth formed upon the inner ends of their hubs, and the teeth of which mesh into the teeth cf the beveled-gear wheel L, attached to the shaft M, carrying the armature N. The armatureN is revolved by the power of the magnets O, engendered by an electric current passing through the said magnets.

Upon the shaft J, between the two loose bevi @led-gear wheels K, is placed a sliding` clutch, l?. which can be thrown into gear with either of the two gear-wheels K, so that the car B can be run up and down by the continuous revolution of the gear-wheel L. The middle part of the clutch P is grooved to receive the forked end of the upper arm of the three-armed lever Q. The arms of the lever Q meet at right angles, and the said lever, at the point of intersection of its arms, is pivoted to a support attached to the car B.

To the ends of the lower or cross arms ofthe lever Q, which are made of equal length, are attached the upper ends ot' two rods or chains, R, the lower ends of which are attached to the lever S upon the opposite sides of and equally distant from its fulcrum. The lever S is pivoted to a support attached to the car B in such a position that the said lever can be conveniently reached and operated by the attendant. One end of the lever S projects for convenience in operating it to start and stop the car and reverse the direction of its movement.

The conducting-wires T for the electric currentare connected at one end with the electric motor M NO in the ordinary manner. The other ends of the conducting-wires T are con nectcd with the insulated screw-posts U, attached to diagonally-opposite corners of the top of the car B.

To the screw-postsllare attached the brushes VIs V, which are made in U form, are attached at their centers to the screw-posts U, and their arms are so bent as to fit and press against the opposite sides of the flange of the bars W, so as to form a sure electric connection with the said anged bars as they slide up and down upon the said bars. The flanged bars W are insulated from the anged bars D, and are secured to the said flanged guide-bars D.

With this construction, the car is raised and lowered by the opera-tion of the worm-gearing, and is also supported by the said'gearing, so that it cannot fall, but will be held securely in any position in which it may be when stopped.

Having thus described our invention, We claim as new and desire to secure by Letters Patent 1,'In an electric elevator, the combination, with the Well A, provided with the racks E in diagonally-opposite corners, and the electric motorM N 0, of the car B, the vertical shafts G, provided with Worms E, pinions H, and journaled in bearings in diagonally-opposite corners, the horizontal shaft J, and the gear-wheels I K L, substantially as and for the purpose set f forth.

2. In an electric elevator, the combination,

with the car B, the electric motor M N 0,and

the drivinggearing K L K, of the clutch P, 1evers Q S, and connecting-rods B B, substann tially as herein shown and described, whereby

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