US1420010A

US1420010A - Elevator

Info

Publication number: US1420010A
Application number: US474176A
Authority: US
Inventors: Clyde S Wright
Original assignee: Nat Supply Co
Current assignee: National Supply Co
Priority date: 1921-06-01
Filing date: 1921-06-01
Publication date: 1922-06-20
Anticipated expiration: 1939-06-20

Description

C. S. WRIGHT.

ELEVATOR. I

APPLICATION FILED JUNE 1. 192i.

Patented June 20, 1922.

'EAQQOIQB INVENTOR WTTN 255 p, A w

Y CLYDE s. WRIGHT, or ronnno, onro, assrenor. 'ro 'rnn NATIONAL snrrnr coiar an'v,

F TQLEDO, OHIO, A CORPORATIQN 0F OHIG.

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Specification of Letters Patent. Patentqgd June 2%), 1922.,

Application filed June 1, 1921. Serial No. 474,176.

To all "who-met may concern:

Be it known that I, CLYDE S. WRIGHT, a citizen of the United States, residing at T0- ledo, in the county of Lucas and State of Ohio, have invented new and useful Improvements in'Elevators, of which'the following is a specification.

My invention relates to elevators designed for the handling of'the casings of oil and other wells, but I do not limit it to that particular use.

-With elevators having a door or closure, difficulty is often experienced in closing the same when a pipe or casing isstanding up in the derrick. Sometimes the door is not entirely closed, so that the pipe or casing may accidentally drop down the well and the men around the well be injured. In many elevators there is a latch extending directly from the door into the body of the elevator, wherein heavy strains due to the pipe or casing suspended on the elevator areorne by the latch which is necessarily comparatively weak. It is the object of the pres ent invention to provide means whereby the elevator door may be readily operated with out liability of the same not being fully closed and of the latch breaking. Another object is to render the closing of the door easy, even when the casing is not fully in its seat in the body of theelevator when the door is to be closed. Other objects appearhereinafter.

Referring to the accompanying drawing,

Fig. 1 is a front elevation of my improved elevator with the links broken off and with a piece of casing seated in the body of the elevator, the elevator door or closure being open. Fig. 2 is a view similar to Fig. 1, but showing the door closed. Fig. 3.is a plan view of my elevator with the door open and Fig. 4, a plan view thereof with the door partially closed and with a portion of the body broken away, a casing being shown in cross-section in the elevator. Fig. is a plan view of my elevator with the door fully closed and parts broken away. I

On the drawing, 1 designates the body or bail member of my elevator. It has the open U-shaped opening 2, its inner portion being preferably semicircular. The body has, opposite the ends of the diameter connecting the extremities of the semi-circle, the two trunnions 3 for the reception of the ends of the usual bail 4.

The, member 1 has, on its side opposite the semi-circular opening therein, the two

lugs

5 and 6 forming the lateral walls for the outer or open end ofthe said U-shaped opening. The lug 5 is a tongue or hinge member to receive the forked members 7 of the -door 8, the hinge-pin 9 extending through the lug 5 and the members '5. .The face of the lug 6 opposite the lug 5 has the horizontal groove 10 to receive the reduced end 11 of the door.

The lug 6 has the slot 12 in which one end of the lever or member 13 is pivotally secured by'the pin 14. The lever 13 has its inner face provided with a lug 15 arranged to engage the outer face of the end 11 of the door when the latter is near its closed position, as shown in Fig. 4, and to force the door closed when the lever is swung into contact with the outerface of the door, as shown in Fig. 5. 16 is a handle on the

lever

13, and 17, a handle on the door.

When the lever 13 is nearing its closed position its free or outer end engages the outer end of the spring-actuated sliding latch 18 and presses it back until the said. end of the leverpasses the end of the latch, whereupon the latch is forced outwardly by its spring 19 so as to overlap the said end of the lever '13 and prevent it from accidentally opening. The latch slides beneath the edges of the lugs or guides 20 on the outer face of the door. It has, the slot 21 through which the screw 22 is passed into the door to limit the throw of the latch and to prevent the spring fromejecting it from its guides 20.

' When my elevator is swung so as to causethe slot or opening 2 to embrace a casing 23, as shown in Fig. 1, the part of the elevator being as best shown in Fig. 3, the operator seizes thehandle 17 and swings the door 8 toward closed position. If the casing is seated against the inner end of the opening 2, the door will'readily be swung to full closed position over the previously unenclosed part of the casing, Then the lever 13 will be swung to its closed position where it becomes locked, thereby locking the door closed, so as to prevent the accidental escape of the casing from the elevator. By pushin back the latch 18 and seizing the handle 16, the lever 13 may be opened, thereby releasing the door 8 which may be opened by means of the handle 17. If, however, the

casing 23 should not at first be fully seated in the opening 2, but should stand therein so as to be engaged by the door 8 before it is/ fully closed, as shown in Fig. 4, the'lever 13 may be swung toward its closed position and force the door entirely to its closed position by means of its inner face or the lug 15 engaging the end 11 of the door. The lever 13 operates with powerful force on the door 8 which is itself a lever, the two operating together as compound levers to fully seat the casingin the elevator. The latch'18 being over the outer end of the lever 13, whose working power is appliedclose to its fulcrum, is subjected to but little transverse or shearing strains, such as the latches are which directly lock the door to the bail members. I can use a very weak latch spring 19-,

which permits the latch to be retracted easily by the lever 13 or by the fingers of the operator.

I claim:

1. In an elevator, abody member having an open lateral slot to receive an-object, a door-hinged at one end to the body member to close the slot, a lever also pivoted to the body member for forcingthe door to its closed position and means for locking the lever in its closed position.

2. In an elevator, a body member having an open lateral slot to receive an object, a door hinged at one end to the body member to close the slot, a lever also pivoted to the body member for forcing the door to its closed position and a sprin actuated latch for locking the lever in its 0 osed position.

3.. An elevator having a body member with .an open slot, a door member hinged at one the remaining side of the slot, and arranged to force the door closed andhold it closed,

and means carried by one of the members for locking the lever member in its doorholding position.

5. An elevator having a body member .with

- an open slot, a door member hinged at one end to the body at one side of the slot, a lever member hinged at one end to the body at the remaining. side of the slot, and having a portion close to its pivot to engage the free end of the door and force the latter to its closed position, and means for releasably locking the lever in the position it has when it has closed the door.

Signed at Toledo, Ohio this 9th day of May, A. D. 1921.

CLYDE S. WRIGHT.