US729344A - Elevator safety device. - Google Patents

Description

'PATENTED MAY 26, 1903.

J.- HOSLER-J ELEVATOR SAFETY DEVICE.

APPLICATION FILED I'BB. 18. 1903.

2 BEEETB-SHEET 1.

2 mvemog ATTORNEY WITNESSES.

JW/L a i PA'TENTED MAY 26,1903,

J. HOSL'ER. ELEVATOR SAFETY DEVICE.

APPLICATION FILED r23; 16. 1903.

2 s'n ETE-sHEET- 2.

WITNESSES:

ATTORNEY UNITED STATES v f Patented May 26,1903 PATENT OFFICE.

JOSEPH HOSLER, OF CANTON, OHIO, ASSIGNOR OF ONE-THIRD TO LOUISA L. HOSLER, OF CANTON, OHIO.

"ELEVATO R SAFETY DEVICE.

' SPECIFICATION forming part of Letters Patent No. 729,344, dated. May 26,1903.

Application filed February 16, 1 90s. Serial miisn'sv'. (Noimodeh) To all whom it may concern:

Be it known that I, JOSEPH HOSLER, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented certain new and useful Improve ments in Elevator Safety Devices; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the-figures of reference marked thereon, in

whichv Figure 1 is a perspective view showing por tions of the car-guides and illustratingthe governor and its different parts, also showing portions of theelevating-oables and the counterbalance-cable. Fig. 2 is a sectional View of the friction-clutch, alsoshowing'the different devices of the governor. Fig. 3 is a top View of the winding-drum and the different pulleys, also showing the friction-diskoperating bar. Fig. 4 is a detached view of the grip-lever in proper relation with the fric tion-disk-operating rod or cable.

The present invention has relation to elevator safety devices; and it consists in the novel arrangement hereinafter described.

The object of the present invention is to prevent the elevator-car from dropping in the event the car-elevating cables become broken or disarranged in any way.

Similar numerals of reference indicate corresponding parts in all the figures of the draw- 1ngs.

In the accompanying drawings,1 represents the car guides or ways, which are arranged to properly hold the car so that it will move up and down in a true vertical position.

v The guides 1 are of course formed of a length to correspond with the distance the car is designed to travel. These guides 1 may be of any desired construction, inasmuch as they form no particular part of the present invention, except that the car-guides must be employed to properly control or guide the elevator-car in its upward and downward movements.

To the upper ends of the guides 1 or their equivalents are connected suitable cross-bars 2, to which cross-bars are securely attached the plates 3 and 4, which plates are formed of sufficient length to provide a means for properly holding the various'shafts 5, 6, 7, and 8, upon which shafts are properly mounted the cable-elevating pulleys 9 and 10, the drum 11, and the co unterbalance-cable pulley 12. The counterbalance-cable and the elevating-cable drum 11 is securelymounted upon the shaft 7, which shaft is properly journaled in the plates 3 and 4 or their equivalents.

It will be understood that I do not desire to be confined to the exact arrangement of the plates 3 and 4 nor to the exact arrangement of the various pulley-shafts, owing to the fact that these particular features form no particular part of the present invention, except that they must be employed and properly arranged to operate an elevator-car.

In the drawings I have illustrated the plates 3 and 4 secured in position by suitable clamprods 13, which clamp-rods are hooked at their upper endsand secured to the cross-bars 2 at their lower ends; but this construction is simply mechanical and may be varied without departing from the nature of my invention;

The shaft 7 is formed of a length greater than the distance between the plates 3 and 4 and upon which shaft is sl'idably mounted the friction-disk 14, the periphery of which is tapered for the purpose hereinafter described. To the plate 4 or its equivalent is securely attached the stationary friction-socket 15, which socket is arranged to receive the friction-disk 14, substantially as illustrated in Fig. 2. 1 The friction-socket and the frictiondisk are each tapered,-so that the friction-disk 14 will be properly bound in the socket or held in frictional contact with the tapered flanges 16 of the friction-socket 15. I

' Itwill be understood that as the shaft 7 r0 tates the disk 14 will rotate with said shaft, and when said disk is out of contact with the flange of the friction-socket it will be free to rotate and there will be no frictional contact upon the periphery of the friction-disk; but when the friction-disk 14 is moved toward or into the friction-socket 15 the rotation of the 7 flanged hub 17, to which flanged hub are pivotally attached the arms 18, said arms being curved outward from a common center and thence extending substantially parallel with the shaft 7 and their outer ends provided with the balls or weights 19. To the arms 18 are pivotally attached the links 20, which links are also pivotally attached to the friction-disk 14, substantially as illustrated in Fig. 2. Beyond the flanged hub 17 and around the shaft 7 is located the spring 21, one end of said spring pressing against the outer face or end of the hub and the opposite end of said spring pressing against the sliding collar or plate 22, which sliding collar or plate is mounted upon the shaft 7 ,substantially as shown in Figs. 1 and 2. To the collar or plate 22 are attached the rods 23, which rods are also connected at their opposite ends to the friction-disk 14.

It will be understood that by the action of the spring 21 the collar or plate 22 will be pushed away from the outer end of the hub 17 which in turn withdraws the friction-disk 14 from its socket-plate, and owing to the fact that the hub 17 remains in a fixed position upon the shaft 7 the arms 18 will be forced toward a common center, carrying with them the weights 19.

In the operation of the elevator proper the normal speed of the shaft 7 is such that the centrifugal force will not overcome the resistance of the spring 21, or at least not to any great extent, and hence the friction-disk is free to revolve without any frictional contact upon its periphery.

To the plate 3 or its equivalent is attached the plate 24, which is extended a short distance above the top of said plate 3, and upon the outer face thereof is located a block or head 25, to which block or head is pivotally attached the outward-extending lever 26. To the outer end of the lever is attached the rod or cable 27 which rod or cable is formed of a length to correspond with the elevator-shaft proper, and of course is to be connected at its bottom or lower end in any convenient and well-known manner.

The rod or cable 27 extends through the floor 28 of the elevator-car, substantially as illustrated in Fig. 1.

Upon the floor of the elevator is located a flanged plate 29, to which flanged plate is pivotally attached the grip-lever 30, which grip-lever is so arranged that when in its normal position it will not grip the rod or cable 27, but when the outer end of the lever-3O is pressed down the lower inner end of the lever will grip the rod or cable 27, and when the rod or cable is so gripped it will pull said rod or cable down with the downward movement of the elevator-car, which in turn pulls the outer end of the lever 26 down.

The upper edge of the lever 26 is provided with an upward-extended projection or arm 31,- to which arm is attached a rod 32, which rodis connected to the slide-bar 33, which slide-bar is formed of such a length that it will extend beyond the friction-disk 14, and i the end thus extended provided with a rightangled portion 34, which right-angled portion overlaps the outer face of the friction-disk 14, so that when the cable or rod 27 is pulled downward it will move the friction-disk longitudinally upon the shaft 7, independent of the centrifugal action of the weights of the governor-balls 19, and thereby lock the shaft 7 against rotation and stop the downward movement of the elevator-car.

It will be understood that should the car take a rapid downward movement the centrifu gal force of the governor-balls 19 will, by means of the various connections between said balls and the friction-disk 14, automatically force the friction-disk into the socket, and thereby retard the downward movement of the elevator-car, this retarding being done automatically. For the purpose of holding the right-angled portion 34, formed upon the sliding bar 33, out of contact with the frictiondisk 14, the spring 35 is provided, which spring pushes against the plate 24 and the pin 36 or its equivalent.

For the purpose of holding the sliding bar 33 in proper relative position the guide-arm 37 is provided, which guide-arm maybe attached to the plate 4, or it may be differently attached, as its only object is to hold the bar in such a position that it will be in position at all times to pull the friction-disk 14 into its socket by means of the right-angled portion 34, which right-angled portion is preferably formed integral with the sliding'bar I have not illustrated in the drawings the mechanism for operating the elevator-car, as such parts form no part of the present invention; but have simply illustrated the arrangement of the operating-cables and the counterbalance-cable.

The devices for starting and stopping the elevator-car are not shown, except the devices for stopping the car in case of accident.

Under the grip-lever 30 is located a spring 38, which spring is for the purpose of normally holding the grip-lever out of contact with the rod or cable 27, said lever being so constructed that when its outer end is elevated its inner end will be out of contact with the rod or cable 27; but when the outer end of the grip-lever is pressed down its inner end will bite against the cable 27 and for the purpose of preventing the cable from yielding at the point where it is to be gripped the flanged plate 29 is elevated, so that it will hug the cable directly opposite the grip-lever.

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

1. The combination of a shaft having mounted thereon a car and counterbalancecable-winding drum, a friction-disk, said friction-disk slidably mounted upon the shaft, a friction-socket adapted to receive the frictiondisk, a hub fixed to the shaft provided with the drum and sliding friction-disk, weighted arms pivotally attached to the hub, links connected to said weighted arms and to the friction-disk, a sliding plate or collar located upon the drum-shaft, a spring interposed between the fixed hub and sliding collar and rods connected to the sliding collar and friction-disk, substantially as and for the purpose specified.

2. The combination of a car, a fixed frictionsocket, a friction-disk movable in and out of contact with the friction-socket, a drum-shaft having connected thereto a drum, a sliding bar provided with an angled end adapted to engage the outer face of the friction-disk, a lever having connected thereto a cable or rod, said cable or rod extended through the floor of the elevator-car, a link connectedto an extended arm formed upon the lever and to the sliding bar, and an actuating-spring located upon the sliding bar, and a grip-lever adapted to grip the rod or cable fixed to the sliding-bar-operating lever, substantially as and for the purpose specified.

3. In a safety device for elevators the com bination of an elevator-car held inguideways, arod or cable formed of alength to correspond substantially with the length of the travel of the elevator-car, a grip-lever normally held out of contact with the rod or cable, a fixed friction-socket, a shaft provided with a drum,

of two witnesses.

JOSEPH HOSLER.

Witnesses:

J. R. BOND, F. W. BOND.

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