US426675A - Split pulley - Google Patents

Description

` (No Modem C. MGNEAL/ SPLIT PULLEY.

Patented A131229, 1890.

@mW/meow UNITED STATESv PATENT EEicE.

CHARLES MCNEAL, OF MISHAVAKA, INDIANA.

SPECIFICATION forming part of Letters Patent No. 426,675, dated April 29, 189.0.

Application filed June 2l, 1888, Serial No. 277,162. (No mocleh) To all wiz/0m t may concern:

Be it known that I, CHARLES MONEAL, of Mishawaka, in the county of St. Joseph `and State of Indiana, have invented certain new and useful Improvements in Split Pulleys; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specilication, in which- Figure l. is a side view of my improved pulley. Fig. 2 is a vertical central section through the same in the plane of the spokes. Fig. 1s a transverse section, enlarged, of the spokecap fastenings. Fig. 4 is a detail view of one of the hub-sections. Fig. 5 is a detail sectional view of the spoke-cap fastening' to the rim.

This invention is an improvement in split pulleys, and its objects are to provide a sectional hub and improved attachments of the spokes to the rim. To these ends the invention consists in the hereinafterdescribed novel construction and combination of parts hereinafter described, illustrated in the drawings, and particularly specified in the appended claims.

Referring to the drawings by letters, A designates the hub, composed of tour similar metallic sections B. Each section has a semicylindrical out-standing portion C, on the opposite edges of which are formed lugs c c, transversely perforated, as shown, for a purpose hereinafter described. At the base of portion C each section has an outwardly-liaring semicircular flange D. On the inner face of flange D, or the face opposite portion C, are formed grooves or channels E c, respectively, as shown, channel E running nearly parallel with the straight inner edge of the section, but to one side of the inner concave face of portion C, and channel e running at right angles to channel E centrally of flange D, as shown.

CZ is a lateral extension of flange D to permit the lengthening of channel c.

F F are openings in llange D, near the ends of channel E, and f is a similar opening in channel e. The channels E c form sockets or seats for the spokes, as shown, and hereinafter referred to.

G G are the similar rim-sections of the pulley, which are constructed alike, so that a description of one will explain both.

Il is a transverse rod connecting the opposite ends of section G, and 7L is a spoke extending` inward from the center of section G, as shown. The rod andspoke are preferably made of gas-pipe or metallicrods, and their outer ends are threaded, as shown, and on these ends are engaged screw-threaded caps I, which have a hollow cylindrical split head t' i, connected to the body of the cap byanecl; i', as shown.. These caps I are secured to the rim by building them therein as follows: The rim is made of wood preferably, and of a number of pieces, as is usual in constructing wooden pulleys. I build the central portion J of the rim-sections first. Then at proper points therein I make internal recesses or bores ,j of a size to receive the cylindrical heads t', which are put in transverse to the rim. Before inserting the heads, however, I make counterbores or hey-openings k', which are transverse to the rim and at right angles to recesses j. The split heads /L' of caps I are then inserted in recesses j, and conical pins K are driven through openings Y.; into the split heads, the bores of which are preferably conical, as shown. Openings k are of larger diameter than heads t', and consequently when pins K are driven into the heads the latter are expanded and securely seated in the rim. The side finishing-.pieces L L of the rim can then be secured in place..

p In setting up a pulley one hub-section B is placed centrally on rod II of one rim-section, which rod rests in channel E, and the inner end of spoke 7L is seated in channel c. Bolts M M are passed through openings F F of section B and through corresponding perforations in rod Il, and a bolt m is passed through opening f anda corresponding perforation in the end of spoke h. Anotherbut oppositelyfacing section B is then placed on the rod and spoke, the bolts M M and m passing through the openings F and fthereol", and securely fastened by proper nuts, as shown. It will be seen that the rod H and spoke are securely clamped between two hub-sections and seated in the corresponding channels thereof. The other rim-section and remaining hub-section are similarly united, so that ICO tWo completed pulley-sections are produced ready for attachment to eachA other upon a shaft. The two pulley-sections are placed on opposite sides of the shaft on which the pulley is to be mounted, With the cylindrical portions C of the hub-sections inclosing thc shaft, as shown. Bolts N N are then passed through the perforated lugs c of the hubsections, on opposite sides of the shaft and forcibly tightened by proper nuts, so that the hub is bound tightly on the shaft and the pulley thereby centered thereon. Tie-rods O'O are then passed through openings in the caps I of rods II of opposite rim-sections, the ends of said rods being screw-threaded for the engagement of nuts 0 o, which when tightened forcibly draw the rods II II toward each other and close the joints between the rim-sections, as shown, and increase the binding of the hub A on the shaft. The opposite ends of each rim-section are provided, respectively, with a mortise P and a tenon p, so that when drawn together the tenon of one section enters the :mortise of the other section, thus insuring accurate joints. The sectional hubs are made Wit-h different bores, so that When the pulley is to be mounted on a different size of shafting the hub can be removed and another hub of proper bore substituted. Thus the hubs of diiferentbores are interchangeable and applicable to the same pulley.

vrlhe hub -sections, spokes, and rods are preferably bolted together before they are attached to the rim, as it Would be difficult to put them in place after the expansion-heads are expanded in the rim. I thus have a split pulley provided with a sectional detachable hub which can be mounted on varying sizesv of shafting, and can be readily and truly centered thereon. The pulley can be readily taken apart for transportation by removing bolts N and tie-rods O, and by removing` bolts M m the hub-sections can be detached from the spoke and rods, and, if desired, the rods and spokes could be unscrewed from their caps. Preferably, however, the rods II are not removed, as they keep the pulley-sections properly bent.

It is obvious that more than one channel e might be formed in the hub-sections, so that more than one short spoke could be employed, Without departing from the spirit of the invention, and the rods II might be sectional; but I prefer making them continuous for the purpose of increased strength.

Having described my invention, I claiml. In a split pulley, the combination, with the opposite rim-sections, the transverse rods connecting the opposite ends of the same ri1nsection and the spokes, of the four-part sectional hub, and the uniting-bolts and tie-rods,

-all constructed and arranged substantially as and for the purpose described.

2. In a pulley, the combination of the rim and spokes, and the transverse rods connected to the rim, with the hub A, composed' of four similar sections B, each having a semi-cylindrical portion G, and fiange D, channeled on its inner face to form seats for the spokes and rods, and the uniting-bolts, all constructed and arranged substantially in the manner and for the purpose described.

3. In a pulley, the combination, With the rim, of the caps having expanding split heads seated in recesses in the rim, and the pins for expanding said heads, all constructed and arranged substantially as and forthe purpose described.

4. The combination of the pulley-sections, each section having a rim-section provided with a tenon and socket, a transverse rod and spoke, and a pair of opposite hub-sections having semi-cylindrical portions C, and channeled flanges between Which the rods and spokes are clamped and secured with the uniting-bolts and tie-rods for t-he pulley-sections, all constructed and arranged substantially as and for the purpose described.

5. In a split pulley, the combination of the rim-sections, the rods I-I I'I, spokes 7L, and caps I I, substantially as described, With the hub A, having four sections B, and the unitingbolts and tie-rods, all constructed and arranged substantially in the manner and for the purpose described.

6. In a pulley, the combination of the rimsections, and the transverse rods and spokes connected thereto, with the herein-described hub A, composed of four sections B, each having a semi-cylindrical portion C, provided with perforated ears, and a semi-cylindrical flange D, having channels E and e, for the rcception of the spokes of the pulley, and the uniting-bolts for said sections, all constructed and arranged substantially in themanner as and for the purpose described.l

7. The herein-described split pulley composed of the opposite rimesections G G, the caps I I, having expanding heads i, and pins K, and the transverse rods II and spokes 7L, with the hub-sections B, having semi-cylindrical portions C, channeled iiangcs D, bolts M M m and N N, and tie-rods O and nuts 0, all constructed and arranged substantiallyin the manner andl for the purpose described.

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

CHARLES MCNEAL.

Witnesses:

ALBERT GAYLOR, JNO. S. CHRISTOPH.

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