US651562A - Elevator. - Google Patents

Description

No. 65|,562. Patented lune I2, |900.

y C. M. BARTHDLO'MEW.

E L E V A T'0 R.

(Appncaeion maa .my 2 9, 1899.

2 Sheets--Sheet 2.

(No Model.)

A TTUHNEYJ/ OASSIUS M. BARTHOLOMEVV,

STATES arnNfr nuten,

OF OOLUMUS,OIIIO, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO VILLIAM F. LEONARD AND TOLLEN F.

KIRKPATRICK, OF SAME PLACE.

ELEVATOR.v

SPECIFICATION forming part of Letters Patent No. 651,562, dated J' une 12, 1900. Application filed July 29, 1899. Serial No. 725,467. (No model.)

To all wil/0711, it may concern:

Be it known thatI, CAssIUs M. BARTHOLO- MEW, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Elevators; and I do hereby declare the following to be afull,clear, and exact description of the invent-ion, such as will enable others skilled in the art to which Io it appertains to make and use the same.

In passenger-elevators many accidents occur through a tardy or premature operation of the door or through undue haste of passengers to get into or out of the car regardless of whether the carisin motion. In some cases when the motor apparatus is faulty and the operator has temporarily absented himself from the car the car will automatically drop away from the landing,involving trouble zo and danger.

One object of my present invention is to provide improved mechanism whereby the door cannot be opened until the car has been stopped properly at the landing and whereby z 5 the car cannot be moved to another floor until the door has been closed; and, further, it is my object to provide means whereby the car cannot move any considerable distance from a landing in the absence of the operator.

3o In the annexed drawings, in which I have shown one embodiment of my invention, Figure l is a vertical sectional view of an elevator-shaft and a car therein equipped with an embodiment of my present invention.

Fig. 2 is a view in elevation looking from the exterior of the shaft toward the door thereof, showing the door closed; but the door-closing lever is in the position to which it is thrown by the movement or passing of the car. Fig.

4o 3 is a view in perspective, parts being broken out to show cams for automatically controlling at a floor the motor-controlling lever. Fig. -i is a perspective view illustrating in detail the door-closing lever and door-latchiug devices. Fig. 5 is a perspective view illustrating in detail, on a scale larger than that of Fig. 1, the parts operated by the motor-controlling lever. Fig. 6 is a perspective view illustrating in detail the devices for wilh- 5o drawing the door-closinglever from the closed door.

On t-he several views like characters of reference mark corresponding parts.

1 designates the walls of an elevator-shaft, 2 a sliding door suspended on rollers for closing an opening from the floor into said shaft, and 3 a car or carriage to move in said shaft.

`In the instance shown the apparatus for operating the door 2 comprises a weighted cord l2, attached to the upper portion of the door and passing over a pulley in the side of the shaft, said weighted cord tending to pull the door to its open position, and a lever 5, pivoted inthe floor and furnished with a spring 5, tending to close the door. Attached to the lever 5 is one end of a cord b,while the other end of said cord is attached to block 5, sliding on a bar 5, arranged vertically at the side of the shaft. The cord 5" passes between a pair of stationary rollers 5', so that if the sliding block 5 be drawn up or down from it-s middle or normal position the lever 5 is removed from the door and the weighted cord left free to pull'the door open as. soon as unlatehed, as hereinafter explained. It may be herek stated that a spring for the lever of greater power than the Weighted cord is employed, so that normally the door is held closed. The devices for moving the block 5 consist of two boot-shaped dogs 6, pivoted on the outer side of the car, said dogs having springs 6 to hold their toes normally protruded, so that they shall strike the block 5c and carry it up or down, according to the directionin which the car is moving. In order that the dogs may belibera-ted from the block 5c when the lever has been drawn the re-` quired distance from the door, a bar 7, hav-y ing cam projections 7, is arrangedin the elevator-shaft parallel to the path of the motion of the dogs, so that the cam projections7 shall act on studs 6 to draw the dogs from engagement with the block.

Arranged in the shaft adjacent the lever 5 is a frame S, having a horizontal portion 8, provided with a notch S", (see Fig. 4,) into which a pivoted pawl 5f on the lever 5 drops to hold the lever in its withdrawn position. (See Fig. 2.) In this frame also is arranged a bar 9, having at its end near the door-opening an elongated eye 9, into which projects the end of a bell-crank lever 10, constituting IOO 111 and a spring 11" a latch that is journaled in the floor near the corner of the door-opening, so that when said bar 9 is moved toward the door-opening the latching end of said crank-lever will be raised to abut against a shoulder on a bar 2b, extending across the door to prevent the opening of the door, and when said rod 9 is moved in the opposite direction the said latching end shall be lowered and permit the opening of the door. The opposite end of the rod 9 is furnished with roller-studs 9b, for the purpose hereinafter explain ed, and with agravitydog il, the upper end of which is formed to lift the pawl 5f out of the notch 8" when the rod 9 is moved toward the door.

The elevator-car is shown to be provided with an ordinary handled lever l1 for controlling the motor that operates the car; but this lever has longitudinally movable upon it a bar 11, with a laterally-projecting pin connecting a handle 11ll on bar l1 with the lever 11, so that said pin is normally depressed. The handle 11 extends through a longitudinal slot in the lever 1l. By taking the handle of the lever and the handle of the bar 11n in the hand the pin llb can be raised or lowered at will.

Secured to the wall of the eievator-car adjacent the motor-controlling lever 11 and in a plane parallel to the plane of oscillation of the said lever is a plate 12, having a slot 12 concentric with the fnlcrum of said lever; but the wall of said slot is open at its upper side, as indicated at 12b, such opening being located opposite that positiouof the pin 1lb when the motorcontrolling lever is in position for stopping the operation of the motor.

Pivoted to the wall of the car at the left of the plate 12, as seen in Fig. 1, is a bell-crank lever 13, having pivoted to the end of its upper or horizontal arm a link 13, having a closed slot, preferably concentric with the Slot 12, in which projects and remains the pin 1lb. The vertical or dependent arm of the bell-crank lever 13 is bifurcated to straddle a pin 14: on a horizontally-sliding bar 14:, arranged on the wall of the car below the plate l2. This plate carries a vertically-arranged bar 14;, having its ends beveled or pointed. This bar 149 is placed to stand beyond the side of the car, and its path of inotion lies between the roller-studs 9b on the bar 9.

Pivoted in the door of the car between the lever 1l and plate 12 is a bar 15, havinga recess or notch 15a at its upper end. The bar 15 is pivoted, so as to oscillate in a plane parallel to the plane of oscillation of the motor-controlling lever, and its recess 15 coincides horizontally with the slot 12n in the plate 12. Therefore When the pin 1lb, and with it the link 13, is depressed, so that the pin rests in the recess 15, the leverll and the bar 12 oscillate together, the said pin moving in the slots of both the lilik and plate. The pin 11b cannot, therefore, be let into or removed from said recess until lever 1l is brought to its motor-stopping position-tl1at is, until the ing 12b.

To hold the bar 15 normally, but yieldingly, with its recess 15 under the opening 12", itis linked by means of arod l5",of properlength, to the end of a spring 15C, secured under the Hoor of the car, the bent end of the rod pass ing through a slot 3 in the tloor of the car. (See Fig. 3.) Connected to this bent end of the rod 15b is the arm of a bell-crank lever 15d, while the other arm of the bell-crank lever has its end protruding beyond the side of the ear. fulcrumed horizontally to the under side of the car, as seen in Fig.

Secured to the side of the elevator-shaft, so as to lie in the path of motion of the protruding end of the bell-crank lever l5, are camblocks 16. These blocks are arranged one a little above and the other a little below the plane of the iioor, so that their adjacent camsuriaces when acting on the end of the bellcrank lever 15l shall throw the lever 15 (and also lever 11 when connected therewith) to a position to reverse or stop the motor.

In connection with the bell-crank lever 13 there is employed a device for automatically locking the same while the car is in motion, comprising a bolt 17, upon which is aspringsupported collar17, adapted to be depressed bythe centrifugal action of balls 17", whirled bythe looped portion 1S of fixed cord 1S, passing through the car, said looped portion running over stationary pulleys 19, fixed to the side of the car, and around a pulley 17, to which the balls are hinged. This bolt 17 and the centrifugal device are supported in a bracket 20, secured to the wall of the car, so that the bolt shall be thrown into a recess in the bell-crank lever 13 to lock said lever in the running position of the pa1ts-tl1at is, when the link 13 is raised and the door latched-and draw the bolt 17 from the recess when the ear is at rest.

The operation, which may be readily understood by those skilled in the art from the foregoing description, is as follows: Letit be supposed that the car shown in Fig. 1 is ascending. In this case the upper dog 6 will strike the block 5c and draw the door-closing lever 5 tothe position indicated in Fig. 2, where it will be held by the engagement of the pawl 5f with the notch 8l. After the dog G is withdrawn from the block 5C by the cam 7iL the block may drop by gravity to the position indicated in Fig. 2. By moving the lever 11 to the middle of the link 13 the car can be stopped at the landing, and when so stopped the bolt 17 is ot' course withdrawn from the notch in the lever 13. Then by releasing the handle 11d the pin 1l" drops into the notch 15, the lever 13 throwing the bars 14 and 9 to the left as viewed in Fig. 1, and consequently the latch 10 down, allowing the weighted cord to draw the door open. In this position of the parts the operating-le- This bell-crank lever is also bestV pin is brought opposite the open- IOO IIO

ver 11 is free to be oscillated; but the car cannot be moved any considerable distance either above or below the landing because of the cam-blocks 16, which will automatically re verse the operating-lever. Therefore in order to move the car to a landing above or below the pin 11b must be lifted entirely outof the slot 12, and this lifting carries with it the link 13, and therefore throws the bar 9,with its gravity-dog 9c, to the. right as viewed in Fig. 1, thus lifting the latching-pawl 5f of the lever 5 and allowing said lever to close the door; 'but the pin 11b cannot be lifted entirely out of the slot 12 until the door is closed, because of the contact of the latch with the bar 2b, so that it will be impossible to put the car in motion to take it to a floor above or below until the door is entirely closed and latched. It will be noted that after the pin 11" has been lifted out of the notch 15 the lever 15 is free to be oscillated by either of the cams 16 without affecting the motoroperating lever11 and that at all times, except when affected by said cams 16, the lever 15 is held by the spring 150, so that its notch 15 stands directly under the opening` 12b.

What I claim, and desire to secure by Letters Patent, is-

l. In combination with an elevatoreshaft, a door in an opening to said shaft, means for automatically opening the same, a device for latching said door in closed position, a carin said shaft, means on the car for operating said latching device, and a governor on the car operated by the motion of the car to lock the door-latch-operating devices, substantially as described.

2. In combination with an elevator-shaft, a carin said shaft, a door in an opening to said shaft, means for automatically opening the same, a device for latching the same in closed position, 'means on the car for operating said latching device, and means on the car operated by the motion of the car to lock the door-latch-operatin g devices while the car is in motion and unlocking said lock when the car stops, substantially as described.

3. In combination with an elevator-shaft,

a carin said shaft, a door in an opening to said shaft, means for automatically opening the same, a device for latching the same in closed position, means on the car for operating said latching device, a lock operated by the motion of the car to 'lock the door-latchoperating devices, a motor controller and means on the motor-controller for operating the door-latch-operating devices when the car has stopped, substantially as described.

4. In combination with an elevator-shaft, a car in said shaft, a door at a landing to said shaft, devices in the car for controlling the motor for said car, cams 16 arranged in said shaft, a device 15 arranged to be actuated by said cams, and means for connecting and dis connecting the motor-controller and the device 15, substantially as described.

5. In combination with an elevator-shaft a car to move in said shaft, a door in an opening to said shaft, means for automatically opening the same, adevic'e vfor latching the same in closed position, means on the c ar for operating said latchngdevice, a motor-controlling device in said car, cams 16 arranged in said shaft, a device 15 arranged to be actuated by said cams, means on the motor-controller for actuating` the door-latch-operating devices and connecting said motor-controller with the device 15, substantially as described.

6. In combination with an elevator-shaft, a car to move in said shaft, a door in an opening to said shaft, means for automatically opening thesame, a device for latching the same in closed position, means on the car for operating said latching device, a motor-controller in said car, cams 16 arranged imsaid shaft, a device 15 arranged to be actuated by said cams, means on the motor-controller for actuating the door-latch-operating devices, and means for permitting the connection of the motor-controller with the device 15 only when the motor-controller has been brought to stopping position, and permitting the operation of the same after the connection has been made, substantially as described.

7. In combination, an elevator-shaft and a car to move therein, a door in an opening to said shaft,'a weighted cord to open the same,

a preponderating device for closing the d0or,-

means operated by the car for entirely disengaging said preponderating device from action on the door, and means in the shaft for holding the same so disengaged, a latch for holding the door closed, means for operating the same, means in the car for releasing the door-closing device and restoring the doorlatch to its latching position, a motor-controller in the car, a device thereon for operating the means for releasing the door-closin gand latch-restorin g devices, substantially as described.

8. In combination, an elevator-shaft and a car to move therein, a door in an opening'to said shaft, a weighted cord to open the same, a preponderating lever for closing the door, means operated by the car for disengaging said lever from action on the door, and means in said shaft for holding the same so disengaged, a latch for holding the door closed, means in the car for releasing the door-closing lever and restoring the' door-latch to its latching position, a motor-controlling device in the car, and a device for operating the means for releasing the door-closing and latch-restoring devices, substantially as described.-

9. In combination with an elevator-shaft,

and a car to move therein, a door in an open-v ing to said shaft, means for opening the door and preponderating means lfor closing the door, a latch for holding the same closed, means operated by the motion of the car to relieve the door of the action of the closing IOO IOS

device, a motor-controller in said car, a device on said controller operative in the stopping position only of the said controller to release the door-latch, and means compelling the restoration to action of the door-closing device and the restoration of the latch to latching position prior to the movement of the car away from said door, substantially as described.

10. In combination with an elevator-shaft, a door in an opening to said shaft, means for automatically opening the same, a latch for holding the door closed, a carin said shaft, a motor-controller in said car, means in the car for operating the latch, a device on the motor-controller for actuating the means for operating the latch, and means to prevent the operation of the said device until the motorcontroller is brought to stopping substantially as described.

position,

2O l1. In an elevator mechanism of the kind described, the combination of a motor-controlling device 1l, a movable pin 1lb thereon, a. plate 12 with a slot motor-stopping position of ver 15, a spring l5, and lever 15d, a link-connecting lever 15 and the spring and lever 15", and cams 16 to actuate the lever 15d, substantally as described.

12 open only at the the pin' 11", a le- 25 In testimon i whereof I aiix m i sifnature o in presence of two witnesses.

CASSIUS M. BARTHOLOMEVV.

Witnesses:

GEORGE M. FINCKEL, GEORGE W. ALFRED.

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