US1329790A - Pressed-steel pulley - Google Patents

Description

J. R. MARCHESSEAULT.

PRESSED STEEL PULLEY.

APPLICATION FILED JUNE 7, 1919.

1,329,790,. Patented Feb. 3,1920.

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nnnssnns'rnm. PULLEY.

Specification of Letters latent.

Patented Feb. 3,1920.

Application filed June 7, 1919. Serial No. 302,453.

To (ZZZ whom it may concern Be it known that I, JOSEPH Roi MAP.- orrnssnAuLr, a citizen of the United States, residing at lVorccster, in the county of lVorcester and State of Massachusetts, have invented new and useful Improvements in Pressed-Steel Pulleys, of which the :lollowing is. a specification.

This invention relates to the inanut'act iire of pulleys and wheels from sheet metal, and more particularly to sectional or split pulleys madeof pressed steel, and its object is to produce a pulley which will have maximum strengtl'i ith relatively small weight, which can be mounted on or removed from a shaft quickly and easily without the necessity of disturbing other pulleys adjacent to it on the same shaft, which will be clean and have no projecting parts to catch in anything and, generally, which will be a safety pulley to alhigh degree.

l Vhile certain features Oftllt) construction can be advantageously used in solid wheels and pulleys, the preferred form of the in vention is the split pulley in which all the advantages of the improved construction are fully realized.

The invention is illustrated in the accompanying drawing, in which. Figure 1 is a cross section of the preferred fornrof pulley, or it may be'considered as a front view of one half of a split pulley; Fig. 2 is a side elevation of the san'ie, with one half in I section; Fig. 3 is a view similar to Fig. 1 of a modified construction, suitable for small pull eys, and Fig. 4 is a similar view showing a construction suitable for a solid or nonsplit pulley or wheel. I

I will first describe the split pulley shown in Figs. land 2. The outer members co1nprise the rim. portions 1. 1, and the concave web portions 2, 2." The latter have a semicircular opening 3. inwardly flanged as at 4-, which fits around the haliibushing 5. Each inner member consists of a conical diskor web portion 6 which also has a semi-circular 0 Killing: 3 outwardlv flanged as at 9 to lit the bushing, a short radial porti on 7, and an outwardly extending flange 8 on the latter. The radial portions 7, 7, of the two in ner members are placed back to back and united by spot welding, riveting, bolting, or

the like, and the rim portions 1,1, of the two outer members are similarly secured to the two members each flanges 8, 8. Prongs 13 are formed on the clamps 10, which pass through holes in the flange and bushing and are riveted over on the inside of the latter. as shown in Fig. 1.

Fig. 2 illustrates a construction for a small wheel Ol' pulley, in which the inner members may be omitted. It consists 01 having a rim portion 15 and a web portion 16, the latter being centrally cutaway to fit over the bushing 5 and having a flange 17 around the said opening.

A ring 18 is placedinside the rim portions at their meeting edges and is secured thereby welding or equivalent means.

This form may be used in a split pulley or in a solid one. lVhen in the former, the same kind of clamps are used to clamp the pulley on the shaft as are used in Figs. 1 and 2, in which the, semi-circular clamp members are indicated at 10 and the clamp ing bolts at 11. The'bolts are socket wrench inserted through the openings'lSZ, formed in the rim portions of the outer members for that purpose.

A somewhat dilt'erent form of construction is shown in F ig, l, adapted tor asolid pulley, but more especially for wheels of trucks, such as are used in manufacturing shops. Here the rim' portion 20 of one outer member lies wholly within the rim member 20 of the other outer member. Each outer In ember comprises the web portion 21, which in ay-be concaved or not, as desired, and which has the inwardly flanged opening 22 fol-the hub or bushing 5. Eachinner membcrconr prises the conical portion cured to the inner rim portion 20. In this form the flanges 26 on the inner members 'eX- tend inwardly and conform to and fit in the flanges 27 of the webportions ofthe outer members.

It will be noticed that these pulleys present unbroken smooth external surfaces. whereby the danger:of'catchingones clothingis obviated, the placing of abelt is ren deredeasier and safer. and the pulleyscan even be cleaned while running actuated by a 23. the radial pOl tron and the peripheral 'flange25. se-

The absence ofall external sea1ns,joints.

or gaps, as in the ordinary split'pulley, makes a cheaper. truer running, better bal anced andstronger pulleythan any heretofore on the market, as far as I am aware. The meeting edges of the run portions may portions and welded cess to said clamps. I

sists of: two rim members external semi-circular webs With nwardly be spun into the groove between the radial so that the surface of the rim is left perfectly smooth.

The pulley, although light, is extremely strong.

Having thus described what I claim is:

1. A sheet metal wheel or pulley comprising two outer member iC'll consisting of a rim portion and an external web portion, the latter having a flanged central aperture, and two inner members, each consisting of a conical. web portion having a short radial portion and a flange at its periphery and also having a flanged central aperture, and a bushing fitted in said apertures, all said my invention,

parts being permanently united at meeting points.

A split pulley, each half oil which cointo circular pressed steel members, each comprising a run portion and an external web prises semi-circular bushi and two so portion, the meeting edges or" said rim portions being united together and the web portions being apertured to fit over said bushing and connected thereto, and clamps fitting over the bushing to attach the two halves of the pulley together, said rim portions being apertured to permit access to said clamps.

.3. A split pulley, built up 01 two pressed steel members having integral rim and web portions, two inner pressed steel conical members placed back to back and united to said rim portions, and a half bushing, said web portions and conical members being apertured to fit said half bushing and connected thereto, and clamps fitting over the bushing to attach the two halves of the pulley together, said rim portions being apertured to permit aceach half of which coni. A'split pulley,

having integral flanged semi-circular central apertures; two

conical disk spoke members having outwardly flanged semi-circular central apertures andL peripheral flanges united to said rim neinbers; and a half bushing secured within said apertures, said rim members provided with openings to enable the halves to be assembled on a shaft.

A split pulley, each half of which is built up of two outer members, two inner members, and a half bushing, each outer member comprising a rim portion and. an external web portion, and each inner member comprising a conical portion, a pcripheral flange, and a short radial portion connecting said flange to said conical portion, said web and conical portions being recessed to fit said haltbushing, and clamp between said web and like, two of said parts each half of which is said half bushing conical portions to connect he two half pulleys together, said rim portions having openings to give access to said clamps.

6. A split pulley, each half of which consists of four pressed steel parts and a half bushing, all united by spot welding or the constituting the outer or rim members and the other two the inner or spoke members, each outer member consistingoi a rim portion and an external web portion, the latter being recessed to fit over said halt bushing, and each inner member consisting oi a conical web portion, recessed to fit over said half bushing, a short radial portion and a flange on the latter, said flanges fitting within the meeting edges of said rim portions and said radial portions of the two inner members contacting with each other, and said rim portions having openings to permit access to means to clamp the two half pulleys together on a shaft.

7. A wheel or pulley built up of two outer and two inner pressed steel parts and a bushing, each of the outer partsco-nsisting oi a rim portion and a concave web portion, having an inwardly flanged central opening to receive said bushing, and each of the inner parts consisting of a conical portion, having an outwardly flanged central. opening to receive said bushing, a short radial portion, and a peripheral flange on the latter, said flanges being permanently connected to the meeting edges or s: d rim porti ns and said radial portions being permanently connected together. 7

S. A split pulley comprising pressed steel outer members, each havin a rim portion and an external. web portion,and pressed steel inner members comprising web 'por tions supporting said rim portions, and clamps to unite the halves of the iiulley located between theweb portions of the outer .iembers and the web portions of the inner members, whereby they are concealed and protected, said rim portions being apertured to permit actuation of said clamps.

9. A split pulley each half of which consists of a semi-cylindrical hub member, two pressed steel, semi-circular web members, having constituting rim portions, fitted on the ends of said hub member, a reinforcing member between said web memmembers fitting around bers and securec portions, and clamping 11163115011 said hub member to secure the two half pulleys together, said rim portions being apertured to permit access to said clamping means.

In testimony whereof I have h reunto set my hand. 1 v I JOSEPH ROI MARGHESSEAULT,

\ on the inside of said rimlit

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