US391855A - Charles e - Google Patents

Description

(No Model.)

G. E. ONGLEY.

CIRCUIT CLOSING- MECHANISM. No. 391,855. Patented Oct. 30, 1888.

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UNITED STATES PATENT @Erica CHARLES E. ONGLEY, OF N FllV YORK, N. Y.

CIRCUIT-CLOSING MECHANISM.

SPECIFICATIGN forming part of Letters Patent No. 391,855, dated etoher SO, 1888,

Application filed November 21, ISSY.

with appliances for controlling electrically the4 operating mechanism of an elevator in the manner shown and described in my companion application for Letters Patent, filed November 22,1887, Serial No. 255,857, it being the obzo ject of the invention to increase the number of possible electrical contacts and also to secure the automatic breaking of the circuit whenever the hand of the operator is removed.

ln the accompanying drawings, Figure 1 is a view of one of my improved electric switches, shown partly in section to disclose the switchlever. Fig. 2 is a sectional view on the lineX of Fig. l, and Fig. 3 is a sectional view on the line Y of Fig. l.

Referring to said figures, A denotes the switch-plate, preferably made of ain insulating material, in which the short spindle B is journaled. rilhe upper end of the spindleB is bifurcated at O to receive the end of the switchlever D, which is pivoted to the spindle B by a pin, a, upon which the switch-lever is capable of a motion at rightangles with the switchplate A. It will thus be seen that the lever D is arranged te vibrate in two planes, one parallel with the plate A and the other at right angles to the plate.

To the lower end of the spindle Bis attached an arm, E, to which is connected an equalizing-spring, preferably made in two parts, as shown, with their opposite ends attached to the under side of the switch-plate. This equalicing-spring serves to normally hold the lever vin the mid-position shown in Fig. l.

Upon the. switch-plate A are two metallic contact-plates, F F, placed at the opposite ends of a short are concentric with the axis of Serial No. 255,718. (Xo model.)

the spindle E, and a guide-plate, G, is attached bythe screws c to the switch-plate A. Upon the side of the switch-lever D next the switch-plate is a projecting contact-point, d, and upon the under side of the guide-plate is an elastic blade, e, attached at its center to theguide-plate, with its free ends curved downward in order to press the switch-lever downward and secure a certain contact of the point d with the plates F F.

In the center of the are described by the point d as the lever D is moved about the axis of the spindle B, and in the normal position of the switch-lever D as held by the equaliZing-spring, is a contact-block, H, capable of a slight sliding motion in ways in the plate A, and held in its normal position with its upper surface in the same plane with the plates F F by means of a spring, j', attached by a screw, g, to the underside of the plate A.

Beneath the lower end of the block H are two springs, j, attached to the plate A and acting as electrical brushes iu making an electrical contact with the block ll when in its depressed position.

The wire 0r wires leading from the generator or generators is or are connected to the spindle B. A line-wire, 2, is connected by a screwJu, to the contact-plate F. A second linewire, 3, is similarly connected to the plate F, and a third line-wire, Ll, is connected to one or both of the brushes j. ln the normal position of the switch the leverD is held in the center of its are of motion by means of the equalizing-spring b, and it is also held against the under side of the guide-plate G by means of the springf, acting through the sliding block H, which block is thereby held from Contact with the elast-ic brushes j.

The operation of the switch apparatus is as follows: Vhen the lever D is moved by the operator until the contact-point d is in contact with the plate F,the wires l S will he connected, thereby closing the circuit through these wires and (assuming the switch to be applied to au elevator mechanism) energizing the motor to cause the car to ascend, and this will continue as long as the switch-lever is held in position; but as soon as thelever l) is released the equalizing-spring t will immediatelyY rcturn and maintain the lever in its central po- IOO sition, as shown in Fig. l. By moving the lever D in the opposite direction, so as to carry the point d into contact with the plate F', the circuit through the wires l 2 will be closed and the motor energized to cause the car to descend. By depressing the lever D when in its central position, so as to force the sliding block H into contact with the elastic brushesj, the circuit through the wires 1 4 will be completed, so as t0 stop the car. I have herein described and shown in the accompanying drawings only one sliding block H, by which a third line-wire is added lto the capacity of the switch; but it will readily be seen that a larger number of similar blocks could be interposed in the arc between the two contactplates F F. The use of three contacts, F, F, and H, as shown, allow either one of the linewires to be brought into the circuit by a single movement of the switch-lever D, and each contact is immediately and automatically broken as soon as the hand is removed from the switchlever D.

XVhat I claim is- 1. The combination, with a switch -lever 25 forming part of an electric circuit and pivoted to vibrate in two directions, of the electrical contacts F, F, and j, and the sliding block H, placed between said contacty and said switchlever and actuated by the latter, substantially 3o as described.

2. The combination, with the pivoted switchlever D, forming part of an electric circuit, of the sliding block H, actuated by said pivoted switch-lever, and the brush or brushes j, forming a part of said circuit and lying in the path ot' said sliding block, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing wit- 40 ncsses.

CHARLES E. ONG LEY.

Witnesses:

T. H. PALMER, J. J. KENNEDY.

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