US696994A - Electric elevator. - Google Patents

Description

Patented Apr. 8, I902.

ATTORNEYS A. M. MODRY. ELECTRIC ELEVATOR;

(Application filed Apt 10, 1901.) (No Model.)

Patented Apf. 8, 1902.

No. 696,994. A. M. MODRY.

ELECTRIC ELEVATOR. (Application fllmiApr. 10. 1901 (III) Modal.)

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Patented Apr. 8, I902. A. M. MOIJRY.

ELECTRIC ELEVATOR.

(Application flied Apr. 10, 1901.)

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(No Model.)

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UNTTT STATES PATENT OFFICE.

AUGUST MARTIN MODRY, OF BROOKLYN, NE\V YORK ELECTRIC ELEVATOR.

SEEGIFIGATION forming part of Letters Patent No. 696,994, dated April 8, 1902.

Application filed April 10, 1901. Serial No. 55,130. (No model.)

To all whom it may concern:

Be itknown that LAUeUsr MARTIN MonRv, a citizen of the United States, and a resident of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Electric Elevators, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof, in which similar letters of reference indicate corresponding parts.

This invention relates to improvements in electric elevators.

The nature and object of the invention will be fully understood from the following general description and the annexed drawings and will be subsequently pointed out in the claims.

Figure 1 of the accompanying drawings is a vertical sectional view of my newly-invented elevator, taken on the line y y of Fig. 2. Fig. 2 is a horizontal sectional view of the same, taken on the line a: 00 of Fig. 1. Fig. 3 is a view of details of a modification more fully hereinafter described. Fig. at is a diagram illustrating the electrical connections, also more fully hereinafter described.

A designates the walls of the elevator-well. This well is to be approximately of square transverse section, as illustrated in Fig. 2. In-each corner of this well are placed two vertical rows of rollers, (designated, respectively, by A and A These are arranged so that one row is on each side of the angle formed bythe corner of the well, as illustrated in Figs. 1 and 2.

B designates the elevator carriage. On each of the four corners of this is mounted a screw 0, each of which is journaled in bearings b and with its threads 0 engages the rollers A and A Upon the lower end of each of these screws is mounted a bevel-wheel c, which is fastened rigidly thereon, so that when it turns it will carry the screw O with it.

F designates the electric motor. This may be of any approved and adaptable construction. It is fastened to the bottom of the elevator-carriage by a sufficient support, as K. On the upper end of the shat'tf of this motor is mounted the bevel-wheel f.

E and E designate shafts running in the bearings g g and g g, which are firmly fastened to the bottom of the elevator-carriage. There are four of these shafts, which are set diagonally on the bottom of the carriage and extend from the motor in the middle to the screws on each corner. On the inner end of these shafts are mounted bevel-wheels f f which engage the wheelf of the motor. On the outer ends of these shafts are mounted bevel-wheels 6 6 which engage the wheels 0 on the lower ends of the screws 0.

N designates the electric generator, and H the switch for breaking, closing, and reversing the current. From the generator N the current runs through the conductor n to the plate '5. On either side of this plate 1' are placedthe plates '5 and 11 The plate 2" is connected by the conductor 7' to one side of the motor F. The plate 2' is connected with the other side of the motor by the conductor 0. The motor itself is connected with the generator N by the conductor 3, so that the circuit from the generator through the switch to the motor, through the motor, and back to the generator is complete. The plates 11, '5, and i are so insulated that the current will not pass from one to the other until the circuit is closed by the closer H 1-1. This closer consists of a bifurcated plate H H, which is pivoted at h and is worked by the handle h. The distance between the two ends H and H is such that when the mechanism is in the position illustrated in Fig. at neither side will touch the plate 2', and so the circuit is not closed; but if the handle h, which is rigidly attached to the closer H H, be moved in the direction indicated by the arrow the end H moving upward, will extend across the space between the plates 2' and i, and so close the circuit. This will allow the current to pass through the conductor 1' and the motor and back through the conductor 3 to the generator. When the current passes in this way, the motor will move and on account of the connection of the mechanism hereinbefore described turn the screws 0. These, engaging the rollers A A with their threads, will carry the carriage upward. When the carriage has reached the desired height, the handle is returned to its original position. This returns the closer to its original position, the circuit is broken, and the mechanism stops moving. If the handle h be moved in a direction contrary to the arrow, it will cause the end H of the closer to move downward and close the connection between the plates t' and 2' Then the current running through the connection 0 will enter the motor F on the other side and cause it to turn in the opposite direction. This will cause the carriage to move downward, and so the carriage may be raised, lowered, or stopped at pleasure. The conductors n, 0, a", and 3 should be made of sufficient length to reach through the whole extent of the excursion of the carriage. The carriage should be provided with a proper door, as'm. If it be desired, it may also be provided with a counterweight, which may be attached by a rope, as D, in any common and well-known way.

Fig. 3 illustrates a modification of my invention. In Figs. 1, 2, and 4 the mechanism is illustrated as having two vertical rows of rollers in each corner of the elevator-well; but in Fig. 3 the angle of the elevator-well is truncated, and upon the surface so produced there is set only one row of rollers for each corner to engage the screws on the carriage; otherwise the mechanism is the same as is illustrated in Figs. 1, 2, and 4.

To use my invention, all the various parts are to be assembled substantially as illustrated. The operator must also take care that the motor will produce acurrent of sufficient strength to actuate the mechanism satisfactorily. Then apart from what has been hereinbefore set forth this elevator is to be used in the common and well-known way. It will be, however, found more safe than the elevator usually drawn up by a rope,

' for no matter where the carriage is stopped the threads of the corner-screws, resting on the corner-rollers will prevent it from falling. It will also be found to work easily, smoothly, and noiselessly.

lVhat I claim as my invention, and desire to secure by Letters Patent, is- 1. The combination with an elevator-well; pairs of vertical rows of rollers j ournaled upon the walls thereof near the corners of said well,

i one row of each pair, having its journals arin both rows of one of said pairs of rows; and mechanism for actuating said screws, to move said carriage, substantially as shown and specified.

2. The combination with an elevator-well; pairs of vertical rows of rollers journaled upon the wall thereof, one row on each side of a corner thereof,nearsaid corner, and arranged so that the journals of the row on one side of the corner will be at right angles to the jou rnals of the row on the other side of the corner; of a carriage adapted to move in said well; vertical screws journaled on said carriage, and each screw adapted and arranged to engage the rollers in both rows of one pair of said rows of rollers; an electric motor fastened on the bottom of said carriage; mechanism connecting said motor with said sc1'ews,whereby it is enabled to turn said screws, and move said carriage; and connections whereby said motor is supplied with an electric current, all substantially as and for the purpose set forth.

3. The combination with an elevator-well; pairs of vertical rows of rollers journaled upon the wall thereof, one row on each side of a corner thereof, near said corner,and arranged so that the journals of the row on one side of the corner will be at right angles to thejournals of the row on the other side of the corner; of a carriage adapted to move in said well; vertical screws journaled on said carriage, and each screw adapted and arranged to engage the rollers in both rows, of one of said pairs of rows of rollers, an electric motor mounted upon the bottom of said carriage and moving therewith; mechanism comprising shafts and wheels, as specified, connecting said motor with said screws, and enabling itby turning said screws to move said carriage;

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