US679484A - Elevator. - Google Patents

Description

Patented July 30, I90], 0. L. STABTUP.

ELEVATOR.

(LApplimfinn fllad Apr. 5, 1901,)

(No Model.)

7/2 JIM/E ran 1 B) ATTORNEYS WITNESSES UNTTED STATES PATENT OFFICE.

CHARLES L. STARTUP, OF ELLENVILLE, NElV YORK.

ELEVATOR.

$PECIFICATION forming part of Letters Patent No. 679,484., dated July 30, 1901.

Application filed April 5, 1901.

T ctZZ whom it may concern:

Be it known that I, CHARLES L. STARTUP, a citizen of the United States, residing at Ellenville, in the county of Ulster and State of New York, have invented certain new and useful Improvements in Elevators, of which the following is a full and complete specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to elevators; and the object thereof is to provide an elevator-car with attachments which will operate in the case of an accident or if the rope or cable breaks to prevent the falling of the car.

With this and other objects in view the invention consists in the construction, combination, and arrangement of parts hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawings form apart, in which the separate parts of my improvement are designated by the same reference characters in each of the views, and in which Figure 1 is a side view of an elevator-car and the vertical corner guide-post thereof constructed according to my invention; Fig. 2, a bottom plan view of the car, the corner guide-post between which the car moves being shown in section.

In the drawings forming part of this specification I have shown at 5 the corner guideposts, between which the elevator-car moves, and at 6 the elevator-car, and the bottom of this car is provided at a predetermined distance from each side thereof with a transverse bar '7 and at each sidelwith a laterallymovable locking-bar 8, and these lockingbars 8 are provided at each end with a pin 9, and said pins operate in connection with ratchet-teeth 10, formed on or secured to the post 5. Between each of the stationary bottom bars 7 and the corresponding laterallymovable locking-bars 8 is placed a strong plate-spring 11, and these springs operate to force the lockingdoars 8 outwardly, and at the ends of the bars 8 are transverse guidepieces 12, between which and the bottom of the car the locking-bars 8 move. Pivoted to each of the bars 7 at 13 are two levers 14,

Serial No. 5 1,432. No model.)

and the outer ends of these levers are pivotally connected with links 15, which are pivoted to the locking-bars 8 at 16, and connected with the inner ends of each set of the levers 14: is a flexible device 17, with each of which is connected a rope, cord, cable, or other flexible device 18.

The elevator-car 6 is provided at its opposite side, centrally thereof, and at the top and bottom thereof with pulley-wheels 19, and the ropes or other flexible devices 18 are passed upwardly around these pulley-wheels and connected with the car-supporting cable 20 at 21, and said car-supporting cable 20 passes over pulleys 22 in the top of the elevator-shaft in the usual manner. The cable 20 is also connected with the top of the car, centrally thereof, as shown at 23, and that portion of said cable between the points 21 and 23 whichis designated by the reference character 20 is of such length that in the operation of the car the ropes or cables 18 are drawn tight against the operation of the springs 11 before said part 20 of the cable 20 is drawn taut. In other words, a portion of the weight of the car in the operation thereof is placed on the ropes or cables 18, so as to withdraw the locking-bars 8 out of engagement with the ratchet-teeth 10, and in this position of the parts the car will move up and down in the elevator-shaft between the corner guideposts 5 in the usual manner. If in this operation the cable 20 should at any time be broken, the springs 11 will at once operate to throw out the locking-bars 8, and the latter would engage with the ratchet-teeth and stop the descent of the car; but as long as the cable remains in working order, to gether with the ropes or cables 18, the lockingbars 8 will be held in the position shown in dotted lines in Fig. 2 and will not operate to prevent the downward movement of the car.

It will thus be seen that I provide a safety attachment for elevator-cars which is simple in construction and operation and which is particularly designed to prevent the falling of the car if the cable which supports it should break, and by means of this construc* tion I prevent the serious and sometimes fatal accidents which frequently accompany the breaking of the elevator-cable.

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

1. The combination with an elevator-car, provided with the usual supporting-cable, of laterally-movable spring-operated lockingbars mounted on the bottom of the car, levers pivotally supported beneath the bottom of the car and connected with said locking-bars and flexible devices connected with said 1evers and passing upwardly around the car and connected with the supporting-cable, substantially as shown and described.

2. The combination with an elevator-car, provided with the usual supporting-cable, of laterally movable spring operated lockingbars mounted on the bottom of the car, levers pivotally supported beneath the bottom of the car, and connected with said locking-bars and flexible devices connected with said levers and passing upwardly around the car and connected with the supporting-cable,said

locking-bars being adapted to operate in connection with corner-posts in the elevatorshaft provided with ratchet-teeth, substantially as shown and described.

3. The combination with the vertical guideposts of an elevator-car, which are provided with ratchet-teeth, of an elevator-car,lockingbars adapted to be brought into connection with said ratchet-teeth, springs actuating the locking-bar, levers for actuating the lockingbar, and flexible devices connected with said levers passing up around the car and connecting with The supporting-cable of the car, substantially as shown and described.

In testimony that I claim the foregoing as my invention 1 have-signed my name, in presence of the subscribing witnesses, this 21st day of January, 1901.

CHARLES L. STARTUP.

WVitness'es:

J OSEPH RosoH, J r., ISAAC A. Coon.

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