US427003A - Charles mcneal - Google Patents

Description

O. MONEAL.

SPLIT PULLBY.

Patented Apr. 29, 1890..

(No Model.)

UNITED ST TES PATENT OFFICE.

CHARLES MONEAL, OF GOSHEN, INDIANA, ASSIGNOR OF ONE-HALF TO I EDWARD SKILLMAN, OF SAME PLACE.

' SPLIT PU LLEY.

SPECIFICATION forming part of Letters Patent No. 427,003, dated April 29, 1890.

Application filed November 29, 1839- Serial No. 331,928. (No model.) A

split pulley. Fig. 2 is a sectional view through one half thereof in the plane of the spokes. Fig. 3 is a detail View of one of the hub-sections,

This invention is an improvement in split pulleys, and its object is to simplify and cheapen the construction of the pulley shown in my patent, No. 415,920, of December 26, 1889, and to so form the hub or metallic parts thereof that they can be used direct from'the castings without boring or drilling thereof; and the invention consists in the novel construction of the hub proper, and in certain other novel details of construction and combination of parts, hereinafter fully described and claimed.

Referring to the drawings by letter, A A designate the opposite similar hub-sections, E E parallel spoke-bars secured to the respective sections, and GG the opposite rim-sections, each constituting a semicircle and respectively attached to bars E E, as indicated in the drawings. The hub is parted longitudinally and parallel with the shaft, and the rim is parted in line with the plane of parting of the hub. Each hub section consists of a nearly semi-tubular portion B, partly embracing the shaft W, upon which the pulley is mounted, and having near its ends and on opposite sides perforated ears I) b, as shown. At the center and on the outer face of each portion B is a cross-piece O, which is formed integral with portion B and projects equally on each side thereof, and lies at right angles thereto, as shown, and parallel with the line of parting of the hub, and on the sides of piece 0 are flanges c 0, parallel with the plane of the pulley, and near the opposite ends of said piece are transverse ribs d 01, extending from flange to flange at right angles to piece 0, and exterior to said ribs the pieces 0 are perforated, as at D D, for the passage of bolts.

The bars E E are set edgewise to the shaft W, and are centrally supported by and secured to pieces 0 O of the respective sections A A, their edges resting on said pieces between the flanges 0 thereof, and being notched transversely, as at e e, to fit over ribs cl of the pieces 0, and F F are bolts passing through placement of bars E, and ribs 01 prevent lon-j gitudinal movement of said bars on the hubsections, while bolts F F only have to sustain the centrifugal strain exerted when the pulley is in motion.

The rim-sections G G are built up or made,

as usual, of strips of wood, and are mortised at g g to receive the tenoned ends of bars E E, which bars are secured in the mortises by means of pins II H and keys 7th, pins H passing centrally through the tenons on the ends of the bars, and keys h h passing through notches in the sides of the-tenons and in the rim, as shown in Fig. 2.

I I designate spokes rising centrally from bars E E, being secured thereto by mortiseand-tenon joints and pins, or in other suitable manner, the outer ends of said spokes being secured to the rim-sections G, like bars E, as described. Y

J J designate angle-irons on opposite sides of spokes I, and resting on the edges of bars E, the said angle-irons being flanged on their sides, as at j, to partly embrace the spokes and bars, and they are secured to spokes I by means of bolts K, which pass transversely through the spokes and proper openings in the irons J, and are secured by clamping-nuts 7c is, as shown, while the bolts F pass through openings in the portion of irons J, resting upon bars E, and thereby clamp the irons to the bars, as indicated. This construction rig idly connects both spoke-bars and spokes to the hub-sections, and is useful in large wheels to insure proper strength and rigidity, but in small wheels irons Jmay be omitted; It will be observed that the pulleys thus made are formed in two similar opposite halves, which can be united or separated Without disconnecting the hub-sections from the rim or spokes.

In placing the pulley on a shaft the opposite halves of the pulley are brought on opposite sides of the shaft and the portions B B of the hub placed thereagainst directly opposite each other. Then threaded bolts LL are passed through the opposite ears I) of the opposite sections, and clamping-nuts Z Z are placed thereon and tightened, thereby drawing the sections together and clamping the shaft firmly between them, as in the drawings, the rim-sections being brought together simultaneously, and tie-bolts M M may be employed to bind the rim-sections more closely together, said bolts passing through the bars E E, near the rim-sections, and being bound by nuts in m, as indicated. served that each hub-section supports its halfrim section and the spoke-bar and spoke independently of the other half-section, and that the rim-sections part in the same plane as. the hub-sections, so that the pulley can be forcibly clamped upon the shaft Without distortion thereof or undue strain on the spokebars and rim.

The hub-sections are preferably of iron, and as the openings therein are all at right angles to the plane of parting or shaft they can be cast ready for use Without requiring any finishing or drilling tools or machine work ,The hub-sections are interchangeable and can be used in two, four, six, or eight armed pulleys, and hubs of different sized bores can be substituted for the hubs built in the pulley without taking the rim and spokes and bars of the respective pulleysections apart, if desired. lVhen a very wide-faced pulley is to be made, the spokes and spokebai's can be duplicated-that is, arranged in pairs side by side, as is obvious.

In my patent referred to thehub is divided at right angles to the parallel spoke-bars or parting-line of the rim, and it is necessary to It will be oh- I separate the hub-sections from the other portions of the pulley when removing the pulley from the shaft.

Having thus described my invention, I claim-- 1. In a split pulley, the combination of op posite 1ll11-SGCl3lOI1S, each having a transverse spoke-bar, with the hub-sections respectively connected to said spoke-bars, and each having a semi-tubular portion B engaging the shaft, bolt-openings in its ends on opposite sides, and a piece C, lying at right angles to and across piece B and parallel with the parting-plane of the hub, pieces 0 being secured to the spoke-bars, and the bolts passing through the openings in portion B to unite the hub-sections, substantially as described.

2. In a split pulley, a hub composed of opposite sections each having a semi-tubular portion B to engage the shaft, and a crosspiece 0, lying at right angles to and formed with portion B, and the said portion B being perforated at its ends on opposite sides for the passage of the uniting-bolts of the sections, which bolts are at right angles to pieces 0, in combination with the rim-sections and spokes, substantially as specified.

3. The combination of the hub composed of opposite similar sections, each having a portion B to engage the shaft, a piece 0 at right angles to and across portion B, and perforatedlugs bat the ends of portion B, with the spoke-bars E fastened to pieces 0, the spokes I, angle-irons .I J, the rim-sections, and the uniting bolts and nuts of the parts, all substantially as and for the purpose de' scribed.

In testimony that I claim the foregoing as own I affix my signature in presence of two witnesses.

. CHARLES MGNEAL. WVitnesses:

EDWARD SKILLMAN, CHAS. D. SHULTZ.

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