US804982A - Facing for pulleys and the like. - Google Patents

Facing for pulleys and the like. Download PDF

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Publication number
US804982A
US804982A US22653704A US1904226537A US804982A US 804982 A US804982 A US 804982A US 22653704 A US22653704 A US 22653704A US 1904226537 A US1904226537 A US 1904226537A US 804982 A US804982 A US 804982A
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Prior art keywords
facing
strip
pulley
pulleys
rings
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Expired - Lifetime
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US22653704A
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Jesse T Sappenfield
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H55/38—Means or measures for increasing adhesion

Definitions

  • This invention relates to pulleys, and has for its object to provide an improved facing therefor, so as to prevent slipping of a belt and to permit a material looseness of the belt, with a consequent reduction in wear upon the pulley and the belt.
  • a further object of the invention is to arrange for applying the facing to any ordinary form of pulley without removing the same from its shaft and without changing the pulley in any manner whatsoever.
  • Figure 1 is a side elevation of a pulley equipped with a facing of the present invention.
  • Fig. 2 is an edge view thereof.
  • Fig. 3 is a cross-sectional view on the line 3 3 of Fig. 1.
  • Fig. 4 is a detail cross-sectional view on the line 4: 4 of Fig. 2.
  • Fig. 5 is a fragmentary perspective view of one end of the improved facing-strip.
  • Circular metallic plates or rings 4 are applied to opposite sides of the rim, so as to project a suitable distance beyond the periphery thereof, and are connected by means of a plurality of bolts 5, which pierce the plates or rings and lie across and in contact with the periphery of the rim.
  • the facing of the present invention consists of a single strip of material 6, which is cut to a thickness sufi icient to project beyond the outer edges of the rings 4: when applied to the periphery of the pulley with the opposite ends of the strip skived or tapered, as at 7, the inner edge of the strip being provided with transverse notches or grooves 8 to receive the bolts 5. While the material of i this strip may be varied considerably, leather has been found to be the most eifective, the leather strip being thoroughly soaked and then wound around the pulley between the rings or flanges 4 in spiral form, the extremities of the strip being secured to the next adjacent coil thereof by means of screws or other suitable fastenings 9, which are set through the flanges or rings 4:.
  • the strip After the strip becomes dry the contraction thereof draws the same into very snug engagement with the rim sufficient to prevent creeping thereof.
  • the strip After the strip has been applied to the pulley it may be turned and trued, and as the strip is disposed edgewise it does not become glazed and slack under the action of a belt as when the covering or facing is placed flat upon the rim.
  • Another advantage is produced by the spiral coil of the strip, which disposes portions of the latter oblique to the periphery of the wheel, thereby disposing the grain of the facing oblique to the grain of the belt, which insures an effective gripping of the belt upon the pulley, and thereby obviates slipping.
  • a pulley having rings applied to the opposite ends and projecting beyond the periphery thereof, fastenings piercing the projecting portions of the rings and lying against theperiphery of the pulley, a facing-strip spirally wound around the periphery of the pulley between the projecting portions of the rings and projecting beyond the peripheral edges of the latter,the inner face of the strip having notches to receive the respective fastenings and the ends of the strip being skived With their skived

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Description

Witnesse I W No. 804,982. PATENTED NOV. 21, 1905. J. T. SAPPENFIELD. FACING FOR PULLEYS AND THE LIKE.
APPLICATION FILED SEPT. 29, 1904.
tjqsseja p zwiafzkfinventr Y b9 4e JESSE T. SAPPENFIELD, OF MILAN, KANSAS.
FACING FOR PULLEYS AND THE LIKE.
Specification of Letters Patent.
Patented Nov. 21, 1905.
Application filed September 29, 1904. Serial No. 226,537.
To all whom it 7?!1017/ concern:
Be it known that I, J nssn T. SAPPENFIELD, a citizen of the United States, residing at Milan, in the county of Sumner and State of Kansas, have invented a new and useful Facing for Pulleys and the Like, of which the following is a specification.
This invention relates to pulleys, and has for its object to provide an improved facing therefor, so as to prevent slipping of a belt and to permit a material looseness of the belt, with a consequent reduction in wear upon the pulley and the belt.
A further object of the invention is to arrange for applying the facing to any ordinary form of pulley without removing the same from its shaft and without changing the pulley in any manner whatsoever..
\Vith these and other objects in view the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanyingdrawings, and particularly pointed out in the appended claim, it being understood thatchanges in the form, proportion, size, and minor details may be made within the scope of the claim without departing from the spirit or sacrificing any of the advantages of the invention.
In the accompanying drawings, Figure 1 is a side elevation of a pulley equipped with a facing of the present invention. Fig. 2 is an edge view thereof. Fig. 3 is a cross-sectional view on the line 3 3 of Fig. 1. Fig. 4 is a detail cross-sectional view on the line 4: 4 of Fig. 2. Fig. 5 is a fragmentary perspective view of one end of the improved facing-strip.
Like characters of reference designate corresponding parts in each and every figure of the drawings.
To illustrate the application of the present invention, an ordinary pulley has been shown inthe accompanying drawings made up of a hub 1, a rim 2, and a web 3, connecting the hub and the rim, it of course being understood that the rim may be connected to the hub by means of arms in lieu of the solid web shown. Circular metallic plates or rings 4: are applied to opposite sides of the rim, so as to project a suitable distance beyond the periphery thereof, and are connected by means of a plurality of bolts 5, which pierce the plates or rings and lie across and in contact with the periphery of the rim. The facing of the present invention consists of a single strip of material 6, which is cut to a thickness sufi icient to project beyond the outer edges of the rings 4: when applied to the periphery of the pulley with the opposite ends of the strip skived or tapered, as at 7, the inner edge of the strip being provided with transverse notches or grooves 8 to receive the bolts 5. While the material of i this strip may be varied considerably, leather has been found to be the most eifective, the leather strip being thoroughly soaked and then wound around the pulley between the rings or flanges 4 in spiral form, the extremities of the strip being secured to the next adjacent coil thereof by means of screws or other suitable fastenings 9, which are set through the flanges or rings 4:. After the strip becomes dry the contraction thereof draws the same into very snug engagement with the rim sufficient to prevent creeping thereof. After the strip has been applied to the pulley it may be turned and trued, and as the strip is disposed edgewise it does not become glazed and slack under the action of a belt as when the covering or facing is placed flat upon the rim. Another advantage is produced by the spiral coil of the strip, which disposes portions of the latter oblique to the periphery of the wheel, thereby disposing the grain of the facing oblique to the grain of the belt, which insures an effective gripping of the belt upon the pulley, and thereby obviates slipping.
While the present invention has been shown and described as applied to a pulley, it is of course apparent that it is applicable to wheels of any character and may be applied thereto without altering or changing the wheel in any manner, and where there is room to work it is not necessary to remove the wheel to permit of the application of the present facing.
Having fully described the invention, what is claimed is A pulley having rings applied to the opposite ends and projecting beyond the periphery thereof, fastenings piercing the projecting portions of the rings and lying against theperiphery of the pulley, a facing-strip spirally wound around the periphery of the pulley between the projecting portions of the rings and projecting beyond the peripheral edges of the latter,the inner face of the strip having notches to receive the respective fastenings and the ends of the strip being skived With their skived In testimony that I claim the foregoing as faces lying against the adjacent coils to promy oWn I have hereto affixed my signature in duce flush ends for the coil, and fastenings the presence of two Witnesses.
piercing the projecting portions of the rings JESSE T. SAPPENFIELD. 5 and the skived ends of the facing-strip, the Witnesses:
periphery of the facing-coil being free from GEO. R. WAI'IE,
fastenings. W. O. COLLYER.
US22653704A 1904-09-29 1904-09-29 Facing for pulleys and the like. Expired - Lifetime US804982A (en)

Priority Applications (1)

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US22653704A US804982A (en) 1904-09-29 1904-09-29 Facing for pulleys and the like.

Applications Claiming Priority (1)

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US22653704A US804982A (en) 1904-09-29 1904-09-29 Facing for pulleys and the like.

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