US1852842A - Cat-head for drilling apparatus - Google Patents

Description

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April 5, 1932. E. E. GREVE CAT HEAD FOR DRILLiNG APPARATUS Fi led May 25, 1928 Patented Apr, 15, 1932' f ATZ'NTY'VO T OIL WELL "SUPPLY GOMIEANY, OF

TION OF NEW JERSEY CAT-HEAD Eon-DRILLING APPARATUS Ap lication filed May 25, 1928; Serial No. 280,522.

This inventionrelates to improvements in cat-heads designed for usein connection with drilling apparatus employed in" the oil and gasfields, andfthe present invention isespecially directed to a cat-head that may be readily'applied to and removed from a fly wheel of an engine of the character used in the oil fields. When rigging up a well, the engine is usually the first unit installed; but, heretofore, theengine has not been equipped with a cat-head, and the handling of heavy parts of the rigging, etc. has necessitated considerable unnecessary work due to theabsence of a cat-head or its equivalent onjthe engine. The prime object of the present invention is to provide a simple and efficient cat-head construction that may be readily applied to and removed from the fly wheel of an engine,

and utilized for handling different parts of the well rigging, etc.

A further object of the present invention is to provide a cat-head construction including integral brackets or arms having means particularly designed for applyingand securing the cat-head structure to the spokes of a fly wheel; 2

In the accompanying I drawings, which illustrate an application ofv my invention Fig. 1 is an elevational view of a fly wheel of anengine, showing my invention applied.

' beris designed to cooperate with the head thereto; Fig. 2, a detail sectional view of a portion of an engine fly wheel and the cat-head embodying my invention applied thereto, the section being taken'on line IT1I of Fig. 1; and I c Fig. 3, a detail view particularly showing the manner of connecting the cat-head construction to the spokes .of the flywheel, the .view being taken on iine IIIIII of Fig. 1. Referring tothe'drawings, 5 designates a fly wheel of the character employed on single cylinder steam engines of the type employed in the oil and gas fields. This wheel 5 is designed to be mounted on an end of the engine drive shaft 6 and secured thereto by a key Tenteredin thegrooves of the shaft and the hub portion '8 of the wheel, respectively. 9.

PITTSBURGH, PENNSYLVANIA; ACORPQRA- designates a nut on the threaded end of the key, and 10 the spokes of thewheel.

The cat-head embodying my invention, and

as illustrated and as preferred, comprises a hollow body portion ll open at-the end "12, and is formed with flange portions13 and 14 located at the opposite ends of the ropereceiving portioniof the head. At one end,

the head is provided 1 with an outwardly bulged portion 15, the latterhaving a flat face 16 which is adapted to be centered. on

the end of the enginedrive shaftbymeans of a headedscrew bolt 17 passedthrough an opening 18 of the portion. 15 orthe face 16 thereof, and entered ina threaded recess formed in the shaftfi. In addition to the opening 18, -portion.;-15is formed with an,

As illustrated, each bracket at its outer end is formed jwith a head 21 having a recess 22 3 therein, adapting the head 21 to be fitted upon a spoke of the fly; wheel. Head 21 is also formed with a'pair of apertured lugs 23 lo- I cated adjacent the spoke-receiving recess 22..

24edesignates a clamp member. This mem- 21 for locking the cat-head structure to the wheel and, for this purpose, is formed with bolt-receiving lugsI25r-having the openings. thereof, when the clamp is applied, adapted to register with the openings of the aperturedv lugs 23 in order to receive the headed clampingbolts 26.

i i It will be noted that the cat-head may be applied to the fly wheel withslight labor by simply positioning it on the end of the shaft and clamping the heads of the brackets to the spokes by means of the clamp members 24 and the cooperatingbolts 26-, and turning thebolt 17 into locking engagement; and, of course, it may be easily removed from the wheel.

I claim:

1. Acat-head comprising a hollow, gener-.

ally cylindrical body having outwardly extending rope-confining flanges at the ends thereof, a rearwardly bulged end wall integral with one of said flanges, said wall being centrally apertured for coaction with a centering member, and brackets integral with the body extending from the junction of the wall therewith and to a point beyond the same for attachment'to afly-wheel.

2. The combination with driving means having a central element and spokes, said central element having a central opening, of a cat-head provided with a projection for engaging said central opening in said central element for centering the cat-head, a bracket formed with a spoke receiving recess and means for'clamping the bracket and a spoke together.

3. The combination with driving means having a central element and spokes, of a cathead provided with arms, each formed with a spoke'receiving recess, clamping means cooperating with each arm for clamping a spoke in said recess, and a securing device engaging the cat-head and said central element for centering the cat-head.

4. A cat-head comprising a hollow generally cylindrical body portion open at one end and having a transverse wall at the other end, and brackets adapted to be attached to the spokes of a flywheel, said brackets being formed integral with the body portion and extending a greater radial distance from the axis of the cat-head than the periphery of the c lindrical body portion thereof.

5. he combination with driving means havin a central element and spokes, said centra element having a central threaded o ening, of a cat-head provided with a t neaded projection for engaging said threaded opening in said central element for centering the cat-head, a bracket formed with a spoke receiving recess andmeans for clamping the bracket and :1 spoke together.

In testimony whereof I affix my signature.

EDGAR E. GREVE.

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