US527896A - southgate - Google Patents

Description

(No Madel.)

L. W. SOUTHGATE.

ELEVATOR CONTROLLER- No. 527,896. Patented Oct. 23, 1894.

LOUIS W. SOUTHGATE, OF WORCESTER, MASSACHUSETTS, ,ASS IGNOR TO THE OTIS BROTHERS & COMPANY, OF NEW YORK, N. Y.

ELEVATOR-CONTROLLER.

SPECIFICATION forming part of Letters Patent No. 527,896, dated October 23, 1894.

Application filed December 22, 1891. Serial No. 415,932. (N model.)

new and improved elevator controller which.

shall be very simple and of few parts.

To this end the invention consists of the device described and claimed in this specification and illustrated in the accompanying drawings, in which Figure 1 is a side elevation of an elevator with my device applied thereto. Fig. 2 is a front view of the car or cage. Fig. 3 is a front View of the mechanism in the well, and

Fig. i is a front View of the means employed to attach the controlling rope to the hoisting cable or cables.

The broad features of my invention consist in attaching a running controlling rope to the hoisting cable or cables, so that the running rope will not have to be carried to the top of the well; in the arrangement of counter-balancing weights so that only one rope is needed to move the controlling element in either direction and-further in the arrangements and combinations hereinafter de scribed and claimed.

Referring now to the said drawings and in detail A represents an elevator car or cage, B the hoisting cable or cables and O the usual overhead sheave wheel or wheels over which the cable or cables are passed at the top of the well. The cable or cables B then are shown as passing downthe side of the elevator Well, then under sheave wheel or wheels D to the motor. The motor is not shown as the same per se forms no part of this invention and the same may be either a hydraulic, steam, electrical, mechanical or other motor. By this arrangement of car, hoisting cable or cables and motor the car or cage may be raised and lowered in the usual manner.

1 The pulley or pulleys D are shown as mounted on a shaft whichis journaled in a suitable frame E, which may be secured at the bottom of the well or at any other convenient point.

A controlling rope F is fastened to the hoisting cable or cables and passed around a pulley G located preferably at the bottom of the well and then to the operating mechanism on the car.

One edge of pulley G is preferably set substantially in line with the cable or cables B and the other vertical edge in substantially the same line as the point of attachment of the running rope to the car so that the rope F will stand in two parallel lines. By this arrangement the rope F will run very easily on the pulley G and will not kink or snarl.

Where two cables are used and this is the usual, and preferred construction the controlling rope may be fastened to a blockH through which the cables pass and the block H is rigidly fastened to the cables B by the set screws a. Passing loosely through the center of this block is the shank of the eye bolt I and the same is held to the block H by the check nuts I) as shown. These nuts 1) form a convenient andaccurate means for adjusting the controlling rope.

y The pulley G under which the controlling rope passes at the bottom of the well is mounted or j ournaled in or on an arm 0 which has an adjustable weight at mounted thereon. This arm 0 is fastened on a short shaft 6 which may be journaled in bearings formed in the frame E and on one endof this shaft is fastened the lever f which connects by link or rod g to the motor controlling element. By mounting the levers directly on the frame E a cheap construction of parts is obtained although of course theycould be mounted in a separate frame.

From the pulley G the controlling rope extends up to the car or cage.

The mechanism on the carmay be of any suitable kind that will take up or payout the cable. The particular mechanism shown consists of a shaft h mounted. in suitable bearings i fastened to the bottom of the car. A handle L extends up into the carat a convenient point and by vibrating this handle the rope may be taken up or let out. The handle L may have a suitable guiding device arranged to hold the same position.

On the other end of the shaft his mounted or fastened the double armed lever k and to one arm of the same is fastened the rope F and on the other arm is mounted the adjustable weight m. The weights m and d are set so as to pull in opposite directions on the cable F and the weights and their respective arms or levers are proportioned and adjusted so that the two weights will counterbalance each other so that the operator will not have to work against either weight.

The operation of my device is apparent and is as follows! As the operator moves the handle the rope F is either taken up or paid out. If the rope is taken up the arm 0 will be raised and the lever f positively moved to the right in Fig. 1. If the rope is paid out the arm 0 will fall and the lever f will be moved to the left by the weight 0?, and as the lever f connects to the motor controlling element the motor may be stopped or started in either direction to raise orlower the car or cage, at any desired rate of speed. It will also be seen that the weights at and m balance each other and that as one is raised the other is lowered and vice-versa so that the operator has only to exert force enough to move the motor controlling element and overcome the friction of the parts. Further it will be seen that the rope F does not run around any unnecessary pulleys and that the same is not kinked or given any short turns and the rope always stands in a natural position so that the friction of the same is almost nothing.

In most instances the distance between the sheave wheels 0 and D is greater than the run of the car but where this is not the case, provision may be made for the extra runby arranging the parts so that the block H and the rope F will run over the pulleys at the top of the well. The only point to be observed is that the rope F must always travel exactly the same distance as the hoisting cable or cables.

In some instances the motor and controlling devices may be arranged at the top of the well instead of the bottom as shown.

As I believe that the idea of attaching the controlling rope to the hoisting cable or cables is broadly new, I consider it within the scope of my invention to use two controlling ropes attached at their ends to the hoisting cable or cables or to a compensating device carried by the said cables the other ends being attached to the car, though of course the compensating device could be carried by the car as well as by the cables. The second rope in this construction would be used instead of the weights shown in the particular device illustrated, the two ropes being arranged to move the m0- tor controlling element in opposite directions.

Modificationsof the device herein described and claimed may be made by a skilled me. chanic without departing from the scope of my invention.

in any convenient Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The combination with an elevator car, and the hoisting cable therefor, of the operating mechanism carried by the car, a running shifting rope connected atone end with the hoisting rope, and arranged to be operated by the said operating mechanism, and a pulley connected to the motor-controlling element around which pulley the shifting rope is passed, whereby the motor can be controlled from the car, substantially as set forth.

2. The combination with an elevator car, and a hoisting cable, of the operating mechanism on the car, a running rope arranged to be operated by the said operating mechanism and connected with the said hoisting cable and passing around a pulley connected to the motor controlling element and means as a weight for moving this pulley in a direction opposite to that by which the said pulley may be positively moved by the said running rope, substantially as described.

3. The combination with an elevator car, and a hoisting cable, of the operating mechanism on the car a running rope attached to said operating mechanism and to said hoisting cable, a pulley around which said running rope passes, a Weight arranged to move said pulley in one direction and another weight carried by the car and arranged to pull on the said running rope against the pull of the first of said weights, substantially as described.

4. The combination with an elevator car,

and a hoisting cable, of the operating mechanism on the car a running rope attached to said operating mechanism and to said hoisting cable, a pulley around which said cable passes, said pulley being connected to the motor controlling element, and means for adjusting said rope between said car and its point of attachment to said cable, substantially as described.

5. The combination with an elevator car, a hoisting cable, of a controlling rope attached at one end to the said hoisting cable, a pulley over which said rope runs, said pulley being connected to the motor controlling element, a weight arranged to move said pulley in one direction, and a double armed lever carried by the said car to one arm of which the other end of the rope is attached and a weight arranged on the other end of the said lever, substantially as described.

6. The combination of car A, the operating mechanism carried by the car, hoisting cable B, the controlling rope fastened at one end to the said operating mechanism and at the other end to the hoisting cable, and a pulley G on V tially two parallel vertical lines, for the purpose stated.

7. In an elevator controller as described, the combination with the elevator car, and the operating mechanism carried thereby, of the two hoisting cables and the block fastened to the same, the eye bolt passing through the said block and adjustable relatively to the same, and a running cable attached to the said eye bolt and to the said operating mechanism and connected to move the motor controlling element, substantially as described.

8. The combination with car A, the operating mechanism thereon hoisting cable B, sheave wheel D over which the said cable witnesses.

LOUIS W. SOUTHGATE.

Witnesses:

JAMES J. RAFFERTY, FREDERICK B. HARLOW.

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