US833596A - Pulley. - Google Patents

Description

No. 833,596 PATENTED 0013.16, 1906.

J. GILBERT. PULLBY.

LPPLIUATIOK FILED JULY 6, 1903.

7n: mamas PETERS co., wasmuoron, 1:. c.

No. 833,596. PATENTED OCT. 16, 1906, H. J. GILBERT.

PULLBY. I, APPLIOATION FILED JULYs. 190s.

s SHEBT SSHEET z.

IIITIIIN fo /M" No. 883,596. PATENTED 001*. 16. I906.

- H; J. GILBERT.

.PULLEY.

APPLICATION FILED JULYB, 1903.

3 SHEETS-SHEET 3.

HENRY J. GILBERT, OF SAGINAW, MICHIGAN.

PULLEY.

Specification of Letters Patent.

Patented Oct. 16, 1906.

Application filed 1T nly 6, 1903. SerialNo. 164,428.

' To all whom, it may concern.-

Be it known that I, HENRY J. GILBERT, residing at Saginaw, Saginaw county, Michigan, have invented certain new and useful Improvements in Pulleys, of which the following is a specification.

My invention relates topulleys; and the ob ject thereof is to produce a rigid, eflicient, and durable pulley made from sheet-steel or the like pressed or formed into the novel and original structure illustrated in the drawings and hereinafter fully described.

In the drawings, Figure 1 is a side elevation of a pulley constructed according to my invention; Fig. 2, a diametrical section thereof, but with one-half of the spoke and hub structure in elevation; Fig. 3, a sectional elevation on the line 3 3 of Fig. 4; Fig. 4, a sectional plan on line 4 4 of Fig. 1; Fig. 5, a detail View of the hub structure; Fig. 6, a per spective of the hub-thimble; Figs. 7 and 8, detail views of a rim-clamp, Fi 8 being a section on line 8 8 of Fig. 7; an Figs. 9, 10, and 11 detail views of a modified form of construction of pulley.

As shown, my pulley comprises, essentially, a rim, a hub structure, a clamp, and a series of intermediate radial spokes, all formed and associated in the novel manner hereinafter explained. I

My invention is shown applied to a pulley of the split or sectional type, and consequently the description of one half of the pulley will apply to both halves.

Referring to the first two sheets of drawings, the rim 1, which maybe suitably formed or rolled from sheet-steel or the like, is in the present instance inwardly rolled at its central portion to form a web 2. However, any other character of web may be adopted.

Each half of the pulley has in the present instance a series of three spokes 3, which are made in two sections brought together face to face and secured together, as by means of the rivets 4. In the construction of pulley illustrated in Figs. 1 to 6 the spokes are made integral with the clamp 5, formed in the novel manner hereinafter explained.

The spokes 3 are provided with a longitudinal rib 3', having the marginal meeting faces or surfaces 3*, which fit the corresponding spokes or spoke-sections when the two halves or sections of the spoke structure are assembled and secured together. The outer ends of the spokes are secured to the web 2 of the rim in suitable manner, as by means of the rivets 6, and by preference the edge of the web immediately adjacent the spokes is swaged or flanged laterally in both directions to form the flanges 7, Fig. 2, which fit at the upper ends of the grooves, resulting in the spokes from the provision of the ribs described. The function of these flanges is to relieve the rivets 6 from the shearing strains caused by the rotarial and centrifu al forces, and thereby provide a rigid an eflicient connection between the rim and outer ends of the spokes, which feature is described and claimed in another application filed by me on June 8,1903, Serial No. 160,523. The inner ends of the spokes are joined by atriangular web 3, through which rivets 4. pass, whereby such ends of the spokes are materially strengthened.

As described, the spokes, hub, and clamp are formed integral from a single blank of sheet-steel or the like, and to this end the blank is flanged outwardly toform the hubflange 8, Figs. 2, 3, 4, and 5, and a'triangular portion is cut away from the corners of the side flanges 10 may be folded at substantially right angles to the flange 8, Figs. 3, 4, and 5. The curved flange 8 constitutes the hub portion, and the lateral straight or flanged portions constitute the clamp, the same being a box or bearing for the usual clamping-bolts 12, Fig. 3. Thus in the pulley being described the spokes, hub, and clamp portion of each section of each half of the pulley are formed in a single integral structurethat is, a complete pulley has four of these sections comprising spokes, hub, and clamp.

Within the combined spokes, hub, and clamp thus formed, as above explained, is arranged a hub-thimble 13, which in the present instance is made in two semicircular sections, one of which is illustrated in Fig. 6. In order to effectually brace or support the bolt flange or box, and thereby afford something for the bolts to pull against, I cut or stamp from the body of the thimble triangular tongues 14, which are bent outwardly in such manner that the straight edges 14 bear against the inner face of the flanges 11, and thereby support the same, as clearly indicated in Fig. 3. Each section of the thimble has four of these tongues, as shown, to support the four flanges or boxes 11 of each half of the complete pulley.

In pulleys of the class herein descrlbed great strain is exerted upon the rim-clamps,

blank, as at 8, so that the end flanges 9 and Ice and consequently the provision of proper clamps of this character is of vital importance. In the present instance I have devised a simple and efficient form of rim-clamp, the same comprising, in general terms, two telescoping members secured, respectively, to the meeting ends of the rim and held or clamped together in suitable manner. Referring to Figs. 7 and 8, one of the rim-clamping members consists of two plates 15 and 16 of metal transversely folded at the middle to form a tubular portion and arranged to fit upon and be secured to opposite sides of the web 2 of the rim by means of rivets 17 or otherwise. The extreme ends of these strips or plates are bent laterally and secured to the inner face of the rim on opposite sides of the web by rivets 18, as seen in Fig. 8. The strip or plate 16 is the inner one, and the same slightly projects beyond the outer edge of the other plate in such manner as to lap beyond the joint formed between the plate or strip 15 and the corresponding plate or strip of the other clamping member, as seen in Fig. 7. To form the tubular portion of the clamp the strips or plates 15 and 16 are riveted together byarivet 19. The other clamping member consists of two strips or plates 20 and 21, formed similar to the other member but the plate 21 is as much less in width as the plate 16 exceeds plate 15 in width, with the result that the plate 16 projects or telescopes within the tubular portion formed by the plate 20. The plates 20 and 21 are secured to the web by a rivet 22, to the rim by rivets 23, and to each other by a rivet 24. When the meeting ends of the rim are brought together, the plates 15 and 20 abut, while the plate 16 telescopes Within the plate 20, and thus breaks the joint between the clamps proper. The parts are then held together by a clamping-bolt 24, passing through the tubular portions of the clamping members.

In Figs. 9, 10, and 11 is illustrated a modified form of construction similar to the one hereinbefore described, excepting that the clamp is made separate from instead of integral with the spoke and hub structure. As shown, the inner ends of the spokes are flanged laterally to form the semicircular flange 8. The separate clamp consists of a plate 25, having alternating straight and curved edges to fit into or interlock with the spokes, as seen in Fig. 10. This clampingplate is provided with a curved flange 26, fitting upon the semicircular flange 8, and with lateral flat flanges 27, forming the bearing surfaces or boxes for the clamping-bolts 12. The same rivets 4 which secure the spokesections at their inner ends together also serve to secure the plates 25 upon opposite sides of the spoke structure. If desired, a hub ,thimble or sleeve 13 may be used; but this is not essential.

I claim 1. A split pulley formed of sheet metal, each half or section thereof being composed of a rim half or segmentand of a plurality of radial spoke-arms and a hub portion, the several spoke-arms of each pulley-half being formed in two integral sections which meet at their inner faces and are secured together along their entire len th.

2. A split pulley formed of sheet metal, each half or section thereof being composed of a rim half or segment and of a plurality of radial spoke-arms and a hub portion, the several spoke-arms of each pulley-half being formed in two integral sections and each hub portion being extended longitudinally and transversely of the axis of rotation.

3. A split pulley formed of sheet metal, each of whose halves is composed of half rim, spokes, and hub, said spokes and hub being formed in two separate sections each of which consists of connected radially-ribbed spoke-armswith meeting faces 3 and an integral hub portion.

4. A split pulley formed of sheet metal and each of Whose halves is composed of a half rim and of spokes and hub formed in two separate sections, each section consisting of a series of ribbed spoke-arms with meeting faces 3 and connectin -webs 3 and 9 an integral hub portion, each 0 said sections being formed in a single piece and arranged to be secured together at such meeting faces and said webs to form hollow spokes with integral hub. i r

5. A pulley comprising a rim in combination with a plurality of spoke-arms, hub and clamping portion made in corresponding sections secured together, each section consisting of a component part or portion of the spokes, hub and clamping portion formed in a single integral structure with the hub portion extended longitudinally and transversely of the axis of rotation.

6. A split pulley each half of which comprises a rim portion and spokes, hub and clamp portion formed in two integral sections secured together and to the rim, the clamp portion of each section consisting of two lateral flanges 11 provided with the end flanges 10 and side flanges 9.

7. A split pulley each half of which comprises a rim portion and spokes, hub and clamping portion formed in two integral sections secured together and to the rim, the clamping portion of each section consisting of two lateral flanges 11 provided with the end flanges 10 and side flanges 9 in combination with a hub-thimble provided with tongues for supporting the said flanges 11, and bolts passing through such flanges 11 for plamping together the two halves of the pul- 8. A split pulley each half of which comprises a rim portion and spokes, hub and clamp portion formed in two integral sections secured together and to the rim, the clamp portion of each section consisting of two lateral flanges 11 provided with the end flanges 10 and side flanges 9 in combination with a hub-thimble having outwardly pressed from its sides tongues 14 for supporting the .said flanges 11, and bolts 12 passing through such flanges 1 1 for clamping together the two halves of the pulley.

9. A rim-clamp device for split pulleys consisting of clamps secured to the respective meeting ends of the pulley-rim, each clamp comprising two plates arranged to telescope with the plates of its adjacent clamp with which it engages.

10. A rim-clamp device for split pulleys consisting of two clamps secured to the respective meeting ends of the pulley-rim on the same line as the oint between such meeting ends, each clamp comprising an inner plate and an outer plate folded upon itself and secured to the rim, the inner plates of said clamps breaking joint with the outer plates, and means for securing the two clamps together.

11. A rim-clamp device for split pulleys consisting of two clamps secured to the respective meeting ends of the pulley-rim, each clamp comprising two plates folded together at the middle to form a tubular portion and secured to the rim but the inner plate 16 of one clamp projecting beyond the outer edge of its outer plate and the inner plate 21 of the other clamp being of less Width corresponding substantially to the excess width of the plate 16, and a bolt 24 for securing the two clamps together.

12. A split pulley each half of which comprises a rim, spokes connected therewith at their outer ends and having .a combined hub and clamp portion at their inner ends extending longitudinally and transversely of the axis of rotation, and a split hub-thimble each half of which is provided with means for sup orting said hub and clamp portion.

13. split pulley each half of which comprises a rim, spokes connected therewith at their outer ends'and having a combined hub and clamp portion at their inner ends, and a hub-thimble provided with lateral pro ections for supporting said hub and clamp portion.

14. A split pulley each half of which comprises a rim, spokes connected therewith at their outer ends, and having a combined hub and clamp portion at their inner ends, and a hub-thimble rovided with projections or wings stamped out from its body for supporting said hub and clamp portion.

15. A split pulley each half of which comprises a rim, spokes connected therewith at their outer ends and having a hub provided with lateral extensions to form a clam ing portion, and a split hubthimble, each alf of which is provided with wing-like lateral projections arran ed adjacent the said lateral extension of the 1ub for supporting the latter.

16. A pulley comprising a rim, spokes and clamping portion at the inner ends of the spokes, in combination with a hub-thimble provided with lateral projections for supporting the said clamping portion of the pulley.

17. A pulley comprising a rim, spokes and clamping portion at the inner ends of the spokes, in combination with a hub-thimble provided with wings stamped out from its body and extended outwardly to support said clamping portion of the pulley.

18. A pulley comprising a rim, spokes and clamping portion at the inner ends of the spokes, in combination with a hub-thimble provided with triangular shaped wings stamped out from its body and extended outwardly to support said clamping portion of the pulley.

19. A pulley comprising a rim, spokes secured at their outer ends to the rim and outwardly flanged at their inner ends to form a hub portlon 8 and clamping portions of flanges 11, in combination with a hubthim ble provided with lateral projections for supporting the clamping portions 11. of the pulley.

20. A pulley comprising a rim, spokes secured at their outer ends to the rim and outwardly flanged at their inner ends to form a hub portion 8 and clampin portions or flanges- 11, in combination Wit a hub-thinlble provided with wings stam ed out from its bodyand extended outward y to support said clamping portions 11 of the pulley.

21. A rim-clamp device for split pulleys consisting of clamps secured to the respective meeting ends of the pulley-rim, each clamp com rising an inner and outer plate secured to t 1e rim, the inner plates of two engaging clamps breaking joint With the outer plates,

, comprising, in combination with a splitpulley rim having an inturned web, two clamps, each of which consists of an inner and an outer plate folded at the middle and secured together intermediate of their length to form a tubular portion, the plates of each clamp being of unequal width and arrangedto telesc'o e into each other, said plates of each clamp being secured to opposite sides of said Web, and a bolt received by such tubular portion for securing together two cooperating clamps.

24. A rim-clamp device for split pulleys comprising, in combination with a splitpulley rim having an inturned Web, two clamps, each of which consists of an inner and an outer plate folded at the middle and secured together intermediate of their length to form a tubular portion, the plates of each clam being of unequal width and arranged to te escope into each other, saidplates of each clamp being secured to opposite sides of said Web with their extreme ends bent to conform to the pulley-rim itself and secured thereto, and a bolt passing through said tubular portion for securing together two cooperating clamps.

HENRY J. GILBERT. Witnesses:

EDWARD REITER, LoUIs B. ERWIN.

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