US683709A - Controller for electrical apparatus. - Google Patents

Description

No. 683,709. Patented not. l, |901.

a. w. scHlLLlNG. CONTROLLER FDR ELECTRICAL APPARATUS.

, (Application led May 16, 1901) 4 2 Sheets-Sheet I.

(No Model.)

r f f WWW/ N A 1101683309. Patemed 0111.1,.1901.

EL SCH'ILLING.

CUNTROLLERi FHF? ELECTRICAL APPARATUS.

@pgn-mmm man1 my 16, 1901.)

` 2 Sheets'-Sheet 2.

I (No Model.)

.UNITE STATES.

PATENT OFFICE..

GEORGEW, SCHILLING, OF PHILADELPHIA, PENNSYLVANIA.

CONTROLLER FOR ELECTRICAL APPARATUS. i

SPECIFICATION forming part of Letters Patent No. 683,709, dated October 1, 1901.

Application inea May 1e, 1901. serial no. 60.471. cro model.)

To CLZZ whom, it may concern:

Be it known that I, GEORGE W. SCHILLING, a citizen of the United States, residing in the city and county of Philadelphia,State of Pennsylvania, have invented a new and useful Improvement in Controllers for Electrical Apparatus, of which the following is a specificati'on.

My invention consists of means applied to electrical apparatus for preventing the operator thereof from too rapidly applying the current or voltage.

Figure 1 represents a top or plan view of a controller embodying my invention. Fig. 2 represents a vertical section thereof on line a: Qc, Fig. 1. Fig. 3 represents a horizontal section on line y y, Fig. 2. Fig. 4 represents a vertical section of a portion on line .e z, Fig. l. Fig. 5 represents a top or plan view of a modification. Fig. 6 represents a vertical section of a portion on line a ct, Fig. 5.

Similar letters of reference indicate corresponding parts in the figures. Y

Referring to the drawings, A designates the cap or lid of the casing of an electrical controller, rising from the base B of which are the concentric anges C, forming the annular channel D. E designates shoulders which project inwardlyfrom the inner faces of said flanges C and alternate one with the other, forming a circuitous or zigzag passage in said channel.

F designates the lever or handle of the controller, the same consisting of separable parts F F2, which are fitted to each other telescopically, whereby the section F may be pushed in or drawn out on said section F2.

G designates a plunger whose stem H is movably iitted in the inner end of the section F of the lever, said stem extending in a vertical direction and being pressed downwardly by the spring .I within the box or guide K, which contains said stem H.

The upper faces of the shoulders E are inclined or slanted, as at L, and the sides of said shoulders are right-lined, as at M. It will nowbe seen that when the current is to be turned on, the lever,which is at rest at the no-load point, is moved, say, to the right. Then the plunger G meets an obstacle in the shoulder, which intercepts its path of motion. Therefore in order to pass the same the handle-scction of the lever is moved in so as to clear said shoulder, and the motion is continned when the adjacent shoulder presents a further,A obstacle, in which case the handlesection is drawn out, and so on, by which means the current may be regulated to the extent required, and provision is also made for preventing the lever from being abruptly moved to the full current or voltage point N. In order to reduce the current, the lever is returned in the direction of its startingpoint, when the plunger may ride over the inclined faces of the shoulders, said plunger readily yielding and dropping after it has passed a shoulder, owing to the action of the spring J. It is evident that the lever may be moved in the opposite direction for reversing the current.

The invention as thus far described is applicable to electrical machinery or apparatus that requires to be controlled by rheostatic` or multivoltage or other suitable method, but is also applicable to mechanical devices that require a slow movement on, but a quick movement off, or both.

In Fig. 5 I show substantially the saine construction of parts, with the exception of a slightly-different arrangement of the course of the channel D and the location ofthe plunger Gin the knob or handle G2 of the lever F3, the plunger in this case having also its under side slanted or inclined, as at G3, so as to more readily ride over the shoulders E2 in the channel D. In said channel D is a shoulder N', the same forming an obstruction adjacent to the lever F3 in the normal position'of the latter, the side P of said shoulder being perpendicular to the base of tle channel D', while the upper face Q of said shoulder is inclined or slanted, thus permitting the plunger G5 to ride over the same on the return motion thereof. It will be noticed that the side R of said plunger is also perpendicular to the base of said channel, whereby when said 'side strikes the side P motion of the lever, and consequently of the plunger, in the Wrong direction is prevented, the right direction being indicated by the arrow, Fig. 5.

As shown in Fig. 2, the plunger for a twoway or reversible controller has its opposite sides perpendicular to the base of the channel D; but in the one-way controller, Figs. 5

yand G, the under side of the plunger is inclined or slanted for conveniently riding over the inclined or slanted faces of the shoulders E2 N.

In the controller shown in Figs. 5 and 6 the plunger is formed, preferably, of steel, and an electromagnet S is connected with the cap A at the full current or voltage point N. In this case When the current is on said magnet attracts the plunger and holds it in position. When, however, the current is off, the magnet releases its attractive force on the plunger and allows the latter to drop to the no-load point of control.

Having thus described my invention, what I claim as new,and desire to secure by Letters Patent, is-

1. In a controller of the character stated, a channel in a member thereof, and a risingand-falling traveler carried by the lever or handle thereof, entering said channel, said traveler extending from said lever parallel with the shaft of the controller.

2. In a controller for an electrical appara tus, a channel in the member thereof, shoulders in said channel forming a circuitous passage, and a plunger which is adapted to intermittently traverse said passage, said shoulders having right-lined sides forming obstructions to the motion of said plunger in one direction and having inclined upper faces on which said plunger is adapted to ride freely, permitting the rapid return of said lever.

3. In a controller for an electrical apparatus, means for preventing rapid application of the current or voltage, consisting of a cir- 'cuitous passage in the casing of said apparaessence passage, said passage being formed of separated shoulders with sides forming obstructions to said plunger in the forward motion of the plunger.

4. In a controller of the character stated, a casing, a lever, a circuitous channel in said casing, and a plunger adapted to follow the course of said channel,said lever being formed of sections, one of which is slidable on the other section and carries said plunger, said plunger being adapted to rise and fall on the sliding section that carries it.

V5. In a .controller for an electrical apparatus, a circuitous channelin a member thereof, and a plunger having a side perpendicular to the base of said channel, and an inclined or slanted base.

6. In a controller for an electrical apparatus, a circuitous channel in a member thereof, a plunger adapted to traverse said channel, and an obstruction in said channel for preventing an improper motion of said plunger, said channel having therein, shoulders adapted to form stops at intervals for said plunger in its advance motion, and being further adapted to allow the rapid return motion of said plunger Without interference of said stops.

7. In a controller of the character stated having a circuitous passage, a lever provided l with a sliding member, a pin or plunger which is movable perpendicularly to said member and adapted to intermittently traverse said channel.

GEORGE XV. SCI-IILLING.

Witnesses:

JOHN A. WIEDERSHEIM, DAVID R. KNAPP.

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