US620940A - lefebvre - Google Patents

lefebvre Download PDF

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US620940A
US620940A US620940DA US620940A US 620940 A US620940 A US 620940A US 620940D A US620940D A US 620940DA US 620940 A US620940 A US 620940A
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Prior art keywords
pulley
ears
lefebvre
webs
rim
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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
    • F16H55/02—Toothed members; Worms
    • F16H55/30—Chain-wheels

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  • My invention relates to a split belt-pulley constructed entirely of sheet metal and possessing the advantages of great lightness and strength, the pulley being made in separable halves united diametrically by means of bolts.
  • FIG. 1 represents an elevation
  • Fig. 2 a side view, of one-half of the pulley
  • Fig. 3 is a section on line A B, Fig. 2
  • Fig. 4 is a side view of a complete pulley.
  • Each half of the pulley is composed of two semicircular dishes or concave webs a a, stamped out of sheet metal and having their circular edges stamped up into flanges a, which abut continuously against the rim 1), which may be made of suitable form.
  • the rectilinear diametrical or abutting edges a of the webs a a have also ears or projections c stamped up at a right angle at, or near the rim, and also ears or projections d stamped up at an angle near the middle of the edge (L
  • the portions so stamped up are perforated to receive the bolts by which the two halves of the pulley are united.
  • the rim 1) are disposed angle-irons e e, which are connected both to the ears 0 c of the webs a a. andto the stampedup flanges a of the latter for the purpose of strengthening the ears.
  • Each half of the boss is formed of a semicylindrical shell f, the edges of which are turned outward fromthe center to form ears f for the purpose of being bolted to the ears cl d of the webs a a, to strengthen the same.
  • the two halves of the pulley, constructed as hereinbefore described, are united by bolts, as usual in the case of split pulleys.
  • pulley described presents' the advantage of being very economical, while at the same time affording great strength both in the rim and web or body of the pulley, which is capable of supporting considerable strains for a considerable period without getting out of shape.
  • a two-part pulley consisting of semicircular pulley-sections secured together and each comprising two semicircular dished Webs a stamped up from thin sheet metal with raised peripheral edges or flanges a secured to the rim 1) of the pulley, and provided with integral ears c c d d bent away from the web a at an angle, whereby the halves of the pulley may be united by bolts passing through the ears.
  • a two-part pulley consisting of semicylindrical pulley-sections secured together to constitute a pulley, each comprising a pair of dished webs a formed of sheet metal provided with turned -over circular edges or webs a secured to a rim 1), integral ears 0 at or near the circular edges turned over at an angle to the web a, integral ears d at or near the middle of the abutting edge of the web and turned over at an angle to the web and an eared semicylindrical shell f adapted to be secured to the bent-over ears d cl whereby two pulley-sections may be secured together by bolts passing through the ears 0 c and d d to constitute a split pulley.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pulleys (AREA)

Description

Patented Mar. l4, I899. C. LEFEBVRE.
SPLIT BELT PULLEY.
(Application filed Sept. 10, 1898.)
(No Model.) 2 Sheets8heet .L
in: upynqs PETERS co PHOTO-LUNG" WASHINGTON, n, c.
No. 620,940. Patented Mar. l4, I899.
Y C. LEFEBVRE.
SPLIT BELT PULLEY.
(Application filed Sept. 10, 1898.)
2 Sheets-8heet 2.
(No Model.)
THE Norms PETERS c FHOTO-LITHQ, WASHINGTON, o. c.
NITED' STATES Fries.
PATENT SPLIT BELT-PU LLEY.-
SPECIFICATIONforming part of Letters Patent No. 620,940, dated March 14, 1899. Application filed September 10, 1898. Serial No. 690,612. (No model.)
To all whom it may concern.-
Be it known that I, OARLos LEFEBVRE, civil engineer, of 1 Place des Nantiers, in the city of Valenciennes, Republic of France, have invented an Improved Split Belt-Pulley, of which the following is a full, clear, and exact description.
My invention relates to a split belt-pulley constructed entirely of sheet metal and possessing the advantages of great lightness and strength, the pulley being made in separable halves united diametrically by means of bolts.
The invention is illustrated by way of example in the accompanying drawings, in which Figure 1 represents an elevation, and Fig. 2 a side view, of one-half of the pulley. Fig. 3 is a section on line A B, Fig. 2; and Fig. 4 is a side view of a complete pulley.
Each half of the pulley is composed of two semicircular dishes or concave webs a a, stamped out of sheet metal and having their circular edges stamped up into flanges a, which abut continuously against the rim 1), which may be made of suitable form. The rectilinear diametrical or abutting edges a of the webs a a have also ears or projections c stamped up at a right angle at, or near the rim, and also ears or projections d stamped up at an angle near the middle of the edge (L The portions so stamped up are perforated to receive the bolts by which the two halves of the pulley are united. Next the rim 1) are disposed angle-irons e e, which are connected both to the ears 0 c of the webs a a. andto the stampedup flanges a of the latter for the purpose of strengthening the ears. Each half of the boss is formed of a semicylindrical shell f, the edges of which are turned outward fromthe center to form ears f for the purpose of being bolted to the ears cl d of the webs a a, to strengthen the same. The two halves of the pulley, constructed as hereinbefore described, are united by bolts, as usual in the case of split pulleys.
The construction of pulley described presents' the advantage of being very economical, while at the same time affording great strength both in the rim and web or body of the pulley, which is capable of supporting considerable strains for a considerable period without getting out of shape.
What I claim, and desire to secure by Letters Patent, is-
1. A two-part pulley consisting of semicircular pulley-sections secured together and each comprising two semicircular dished Webs a stamped up from thin sheet metal with raised peripheral edges or flanges a secured to the rim 1) of the pulley, and provided with integral ears c c d d bent away from the web a at an angle, whereby the halves of the pulley may be united by bolts passing through the ears.
2. A two-part pulley consisting of semicylindrical pulley-sections secured together to constitute a pulley, each comprising a pair of dished webs a formed of sheet metal provided with turned -over circular edges or webs a secured to a rim 1), integral ears 0 at or near the circular edges turned over at an angle to the web a, integral ears d at or near the middle of the abutting edge of the web and turned over at an angle to the web and an eared semicylindrical shell f adapted to be secured to the bent-over ears d cl whereby two pulley-sections may be secured together by bolts passing through the ears 0 c and d d to constitute a split pulley.
The foregoing specification of my improved split belt-pulley signed by me this 27th day of August, 1898.
CARLOS LEFEBVRE. Witnesses:
ARMAND LEE, HENRI METTE.
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