US1113233A - Wheel for oil-well derricks. - Google Patents

Description

L. G. MOORE.

WHEEL FOR OIL WELL DBRRIGKS.

APPLLGATION FILED APRA, 1913.

Patented Oct. 13, 1914.

2 SHEETS-SHEET 1.

3 INVENTOR- a if WITNESSES W% M WW L. G. MOORE.

WHEEL FOB- OIL WELL DERRICKS.

APPLICATION FILED'APBA, 191s.

Patented Oct. 13, 1914,

2 SHEETS-SHEET 2.

. INVENTOR fig; M 44 WITNESSES Fig.

- which may LEE C. MOORE, 0F PITTSBURGH, PENNSYLVANIA.

WHEEL FOR OIL-WELL DERBICKS.

Specification of Letters Patent.

Application filed Apri14, 1913. Serial No. 758,895.

To all whom it may concern:

Be it known that dent of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Wheels for Oil-Well Derricks, of which the following is a specification.

This invention relates to wheel construction, and more particularly, to bull-wheels for drilling derricks orrigs.

The object of the invention is to provide an improved construction of wheel which can be readily and cheaply manufactured, which is made mainly of standard sizes and shapes of ordinary stock material, which can be shipped in knock-down state and erected in the field, and which can, therefore, be readily transported long distances over rough or uneven ground.

A further object of the invention is to provide a wheel which can be utilized in connection with a shaft formed of a metal tube, and wherein means is provided for se-, curely fastening the wheel to the shaft without liability of the wheel becoming loose thereon.

Further objects of the invention are in partobvious and in part will appear more in detail hereinafter.

In the drawings Figure 1 represents a side elevation, partly in section, showing awheel embodying the invention; Fig. 2 is an end elevation, partly in section, of the same; Fig. '3 is a sectional view on the l1ne 33,

44, Fig. 2, looking in the direction of the arrows; Fig. 5 is a section on the line 5-5, Fig. 4; and Fig. 6 is a detail view of a modification.

The bull-wheel shown in the drawings comprises a shaft 1, which may be solid, as in Fig. 6, but which preferably is formed, as shown in Fig. 2, of a standard wrought iron or steel pipe or tube, the opposite ends of be provided with suitable trunnions (not shown), upon which the shaft is journaled. Near the opposite ends of the shaft are located a tug wheel 2, and a brake band wheel 3. Both of these wheels are of substantially the same construction and are secured in like manner to the shaft 1, the only difference between said wheels being in the details of construction of the rim. The tug wheel 2 comprises a hub 4, spokes 5 and a rim 6. The hub 4 is preferably formed of cast metal, such as iron or steel, while the I, LEE C. MOORE, a resi- 2; Fig. 4 is a detail section on the line spokes 5 are rods or bars of wrought metal. Preferably, the spokes are secured at their inner ends to the hub 4 by castmg the hub around the spokes, although this is not essential. Specifically, the several spokes 5 are laid in the mold in the proper positions," their inner ends'6 prqecting into the mold cavity. The hub 4 is then cast in the ordinary manner, as a complete ring, thereby firmly securing all of the spokes to the rim. After the hub is cast, it is cut or sliced in a plane through its axis, at the points 7. The end portions of the hub are'thicker than the intermediate portion thereof, as indicated in Fig. 5, and are provided with pockets or notches 8, forming oppositely disposed flat faces 9 on the two hub members. Before slicing or dividing the hub, holes 10 are bored through the hub between the oppositely disposed faces 9, said holes being provided to receive clamping bolts 11 for securing the hub about the shaft.

The shaft 1, if tubular, is provided at the place where the wheel 2 is to be secured thereto with a longitudinal slot or opening 12. If the shaft is solid it is provided with a groove 12. One member-of the hub & is provided on its inner surface with a longitudinal slot or key-way 13 adapted to receive a key 14, which 1n cross section is in the shape of a blunt wedge. One or more set screws '15 are threaded through said hub member from the outside opposite the keyway 13, two such screws being shown. In assembling the wheel and securing the hub about the shaft, the key 1& is first placed in position with its wedge-shaped side projecting into the longitudinal slot, groove or opening in the shaft. The hub members are then placed about the shaft, and over the,

key 14 with the latter in position in its keyway 13. Bolts 10 are then tightened up to securely clamp the hub about the shaft. Set screws 15 are thenscrewed in to force the key 14 into the slot, groove or opening in the shaft, thereby preventing the possibility of the hub turning upon the shaft.

Patented Oct. 13, 1914.

The outer ends of the spokes 5 support the 1 Q rim 6. This in general is the ordinary form of rim, consisting of a plurality of common curved wood cants 16 placed side by side and arranged to break joints, as illustrated in Figs. 1 and 2. These cants may be purchased in the open market in stock sizes and have inner and outer edges curved in the arcs of circles of the desired radii. Certain referred to.

of these cants, in the case of the tug wheel 2, are'provided on their outer edges w th circumferential grooves 17 toreceive a driving rope or cable, (not shown) the grooves bemg shaped in accordance with the particular kind of rope or cable being used. The outer ends of spokes 5 are threaded to receive nuts 18. Said nuts are first threaded up so that they are all at substantially the same distance from the axis of the shaft 1. Upon the nuts 18 of each pair of oppositely disposed spokes 5 are laid U-shaped bindlng members 20, formed of strips or bands of rolled metal provided with apertures to receive the spoke ends. The outer ends or arms 22 of said binding members 20 are bent outwardly, so that said members are of U-shape with the arms embracing the rim, thereby enabling the cants to be clamped between the arms of said members. U on the ends of spokes 5 are located circum erential bands or strips 19, formed of ordinary fiat rolled metal bars punched at regular intervals with holes through which the ends of the spokes project. These strips 19 will preferably be punched or bored by means of a templet so that the holes will be spaced the proper distance apart, and can either be bent to the proper curve in the field or before being shipped. Spokes 5 are sufiiciently flexible so that if the holes in strips 19 are not exactly spaced, or if the spokes are improperly placed they can be sprung slightly to enable the strips to be placed over the ends of the spokes. Strips 19 may extend entirely around the circumference of the rim, but preferably are made of a length substantially half the circumference, with the ends at two spokes on Preferably, spokes 5 are arranged in the same manner as the spokes of a bicycle wheel, that is, there are two series of spokes, as shown in Fig. 1, spaced lengthwise of the axis of the shaft. The inner ends of said spokes are farther apart than the outer ends,

so that the spokes are inclined, longitudr' nally of the wheel axis, to a transverse plane. As shown in Fig. 1, the angles of inclination of the spokes are such that they are in line with the grooves 17 in the cants 16, where the power is applied to the wheel. The wheel is accordingly considerably stronger. Preferably, four strips or hands 19 are used, two strips for each of the series of spokes just After the strips or bands 19 are laid in-position over the binding members 20 on the ends of the spokes, 21 are threaded upon the ends of the spokes to secure the bands thereto. The wood cants 16 are then laid in position side by side between the outer projecting arms 22 of the outer nuts U-shaped binding straps 20, said cants being first cut out on their inner surfaces to provide pockets or recesses 21 to receive nuts 21. Said cants are bored with transverse apertures, preferably formed with a templet, so that when the cants are placed in position, the bores in the several cants are in line with each other. Securing bolts 23 are then passed through the alined apertures in the cants and through the arms 22 of the binding straps 20. Nuts 24: are then threaded upon said bolts to tightly clamp the cants together, the arms 22 of the binding straps 2O yielding or bendin inwardly to effect this clamping action. A ter the rim has been assembled in the manner described, side cover plates or members 25, also formed of ordinary stock wood cants, are secured to the side faces of the rim. Said members are cut away to form pockets or recesses 26 to receive the side arms 22 of the members 20, the nut 24 and the head of the bolt 23. Preferably, the recesses 26 extend clear through the side plates so the nuts 24 can be readily tightened up when desired. Said side members are secured by nails or screws driven through said members into the inner cant members 16.

The brake band wheel 3 is of the same construction as wheel 2, except that the cant members 16 are not provided with grooves 17, thereby providing an outer cylindrical surface of wood to receive the brake band. Both tug and brake band wheels can, if desired, be provided with suitable handles for turning the wheel by hand. These handles may consist of ordinary wooden pins driven into apertures bored through the side cover plates} 25 and the inner cants 16.

The wheel described, has the following advantages: In the first place, it can be shipped in knock-down condition, that is, with the two halves of the hub and the spokes carried thereby separated from each other. The rim is formed of a number of standard curved cants, which can be shipped separately from each other, or can even be purchased'in the field. The other members of the wheel consist of the shaft, the circumferential bands or strips 19, the binding members 20 and the several nuts and bolts. It is, therefore, possible to readily convey or transport the wheel long distances over rough and broken ground, such as is usually encountered in oil fields. The Wheel in general is of the same construction as the ordinary wheels now in use. Ithas the same woodenrim, and the sidefaces of said rim are of wood without sharp angles or projecting bolt heads or nuts so that the fiber rope used is not damaged when it slips off from the side face of the rim. Moreover, the parts of the entire wheel are securely joined together so that the wheel is practically a single integral piece. The key construction described, together with the split arrangement of the hub, securely fastens the hub to the shaft. The spokes are in efiect integral with the hub. The sep rate cants forming the rim are arranged to break joints and are secured to each other by the transverse bolts 23. They are supported on the" be secured to a shaft, spokes secured at their prising segments lying side .15

inner'ends to said hub, a built-up rim, comby side, U-shaped binding members secured to said spokes and embracing said rim, and circumferential bands-rigidly connected to said spokes and supporting said rim.

2. A wheel comprlsmg a hub arranged to be secured to a shaft, spokes secured at their inner ends to said hub, a built-up rim comprising segments lying side by side, U-shaped binding members secured to said spokes and embraclng said rim, and circmn'ferential bands lying between said U-shaped binding members and said rim and supporting the latter.

'3. A wheel comprising a'hub arrangedto be secured to a shaft, a plurality of sets of spokes secured at their inner ends to said hub, a built-up rim comprising segments ly-' ing side by side, U-shaped binding members within said rim and secured to said spokes and having side arms embracing said rim, and a plurality of circumferential bands for supporting said rim, each band being rigidly secured to the outer ends of the spokes of one of said sets.

4. A wheel comprising a hub arranged to be secured to a shaft, spokes secured at their inner ends to said hub, circumferential bands on the outer ends of said spokes, a built-u rim supported by said bands, and circum erentially spaced U -shaped binding members lyingwithin said bands and having their side arms connectedto said rim.

5. A wheel comprising a hub arranged to be secured to a shaft, two series'of oppositelg disposed: spokes secured at their inner en to said hub, each pair of spokes converging toward their. outer ends, l J-shaped binding members each secured to a pair of oppositely disposed spokes, and a rim located between V the arms of said binding members.

' 6. A wheel comprising a hub arranged to be secured to a shaft, two series of oppositely disposed spokes secured at their inner ends to said hub,- a-plurality of binding members one secured to each pair of oppositely disposed spokes, a rim located between the arms of said binding members, and bolts passing through the arms of said members and through said rim.

7 A wheel comprising a hub arranged to be secured to a shaft, two series of oppositely disposed spokes secured at their inner ends to said hub, a plurality of binding members, one secured to each pair of'oppositely disposed spokes, a rim located between the arms of said binding members, bolts passin' through the arms of said members and through said rim, and side plates secured to said rim and having pockets to receive the projecting ends of'said bolts.

In testimony whereof I have hereunto set my hand. a LEE 0. MOORE. Witnesses:

WILLIAM B. WHARTON,

WILLIAM P. LARKIN.

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