US1543966A - Elevator - Google Patents

Description

June30, 1925. 1,5439% C. F. WILLIAMS ELEVATOR Filed Jan. 192

I 1N VEN TOR ATTORNEYS Patented June 30, 1925.

UNITED STATES PATENT. OFFICE.

CLINTON FRANK WILLIAMS, OF 'IONKAW.A, OKLAHOMA, ASSIGITOR OF ONE-HALF TO W. J'. BEAVEN, OF TONKAWA, OKLAHOMA.

ELEVATOR.

Application filed January 21, 1924. Serial No. 687,580.

T 0 all whom it may concern:

Be it known that I, CLINTON FRANK WIL- LIAMS, a citizen of the United States, and resident ofyTonkawa, in the county of Kay and State of Oklahoma, have invented certain new and useful Improvements in Elevators, of which the following is a specification.

This invention relates to elevators especially adapted for use in supporting oil well casings, tubing and drill pipes.

Briefly stated an important object of this invention is to provide an elevator having an improved locking means whereby the same may be positively held against openm It further object of the invention is to provide an improved elevator for oil well equipment having novel means whereby the elevator may be unlatched with a minimum expenditure of time and effort on the part of the operator.

Another object of the invention is to pro vide an elevator of the character described which is safe to use, durable and cheap to manufacture.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying drawing forming a part of the application and in which like numerals are employed to designate like parts through the same,

Figure 1 is a plan view of the improved elevator.

Figure 2 is a perspective view of the same.

Figure 3 is avertical sectional view through the elevator.

Figure 4: is a detail view illustrating the closing means for one of the lugs embodied in the invention.

Figure 5 is a detail view illustrating the latch for closing the elevators.

In the drawing wherein for the purpose of illustration is shown a preferred embodiment of the invention, the numerals 5 and 6 designate coacting semi-circular sections having apertured ears 7 for the reception of a pivot element 8 by means of which the sections 5 and 6 are joined.

The sections 5 and 6 have their terminal portions provided with flat connecting extensions 10 and 11 respectively, one of the sections being provided with a transverse groove 12 which receives a latch 13, pivoted as indicated at 14. The latch 13 is provided at one end with a locking shoulder 16 urged to its operative. position .as illustrated in Figure 2 by means of a coiled spring 17. It will be observed with reference to Fig. 5 that the coiled spring 17 is received in sockets 18 in the opposed sides of the latch 13 and the extension 10 of the section 5.

The depending lug or shoulder16 is engaged by a locking member 25 on the upper portion of a hand operated contact plate 26.

More specifically the member 25 is in the nature of a bell crank pivotally supported as indicated at 27 and when the hand contact member 26 is moved inwardly the upper branch of the bell crank 25 moves upwardly into engagement with the latch so as to re lease the same from its operative position.

In carrying out. the invention the hand contact plate 26 is received in a socket or recess 28 in the extension 11.

Figure 2 illustrates that the pivot pin 27 carries a coiled spring 32 which urges the contact plate 26 into operative position.

The attaching ears 35 have their outer ends normally closed by what might be said to be arms 36 pivoted to the ends of the ears as indicated at 39. When the arms 36 are swung up to their operative positions as illustrated in Figure 2 the latches 4O pivotally carried thereby are engaged with extensions 42 on the upper portions of the ears. More specifically the latches 40 are provided with upwardly extending branches 44 adapted to be received in notches 45 in the ends of the ears and when the parts are in the position illustrated in Figure 4 the openings 46 in the ears are closed and the loops 47 are positively prevented from moving out of the openings. The elongated loops 48 are connected to the loops 47 by means of rings 49 and the ring is of a size to permit the loop 48 to swing freely with relation to the loop 47. This permits the elevator to be conveniently manipulated and moved from place to place as the occasion requires.

lVith reference to the foregoing description taken in connection with the accompanying drawing it will be seen that an elevator constructed in accordance with this invention will be extremely safe and may be released from the drill pipe, a casing, tubing or the like without injuring the operator. c

Having thus described the invention, What is claimed is :-V

1. An elevator comprising a pair of hingedly connected sections having their terminals formed with flat extensions, a latch pivoted to one of the extensions and having its under side formed with a depending lug, one of said extensions being provided with a socket to receive said lug, a

hand contact member pivotally carried by one of said extensions and having a crank to engage said latch tomove the same to releasing position. i r

2. An elevator comprising a pair of hingedly connected sections having their terminals formed with extensions, a latch pivoted to one of the extensions and having with branches whereby to lock said arms to said means normally holding said crank in an inoperative position.

3. An elevator comprising a pair of sections having laterally projecting attaching ears formed with recesses, closure arms pivoted to said ears and extending over said recesses, latches pivoted to said ears and having branches, said ears being formed sockets adapted to receive said ears and spring means urging said-latches to operative position.

. CLINTON FRANK-WILLIAMS.

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