US148808A - Improvement in belt-tighteners - Google Patents

Improvement in belt-tighteners Download PDF

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Publication number
US148808A
US148808A US148808DA US148808A US 148808 A US148808 A US 148808A US 148808D A US148808D A US 148808DA US 148808 A US148808 A US 148808A
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Prior art keywords
belt
improvement
tighteners
arm
tightener
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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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • 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
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0889—Path of movement of the finally actuated member
    • F16H2007/0893—Circular path

Definitions

  • WrILLlAM B. (ELEVES, OF SAVANNAH, GEORGIA.
  • Figure l is a sectional view of my improved belt-tightener, taken through the line x x, Fig. 2.
  • Fig. 2 is a top view of the same.
  • My invention has for its object to furnish an improved belt-tightener designed especially for sewing-machine belts, which shall be simple in construction and convenient in use, enabling the belt to be readily tightened or slackened, as may be required.
  • the invention consists in the belt-tightener formed by the combination of the base-plate, the pivoted arm, the concaved roller, and the hand-screw with each other, as hereinafter fully described.
  • A is a circular plate, which is made with an upwardly-proj ecting dan ge, a', three-eighths of an inch (more or less) in depth.
  • the nange a is designed to enable the plate to be attached to the under side of the table of those sewingmachines in which the machine is secured to the table by bolts and nuts.
  • an arm, B which is notched or slotted, or has lugs formed upon it, to which is pivoted an arm, C, to lugs formed upon thc outer end of which is pivoted the journals of a roller, D.
  • the face of the roller D is concaved, as shown, to prevent the belt from running off the pulley when pressure is applied toit.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Description

fw. LEvEs.
Belt-Tghteners.
Patented March 24,1874.
UNITED STATES ATENT GEEIGE.
WrILLlAM B. (ELEVES, OF SAVANNAH, GEORGIA.
IMPROVEMENT IN BELT-TIGHTENERS.
Specification forming part of Letters Patent No. 1L1,80S, dated March 24, 17874; application filed May 17, 1873.
To all whom it may concern:
Be it known that I, WILLIAM B. GLEvEs, of Savannah, in the county of Chatham and State of Georgia, have invented a new and useful Improvement in Belt Tightener, of which the following is a specication:
Figure l is a sectional view of my improved belt-tightener, taken through the line x x, Fig. 2. Fig. 2 is a top view of the same.
Similar letters of reference indicate corresponding parts.
My invention has for its object to furnish an improved belt-tightener designed especially for sewing-machine belts, which shall be simple in construction and convenient in use, enabling the belt to be readily tightened or slackened, as may be required. The invention consists in the belt-tightener formed by the combination of the base-plate, the pivoted arm, the concaved roller, and the hand-screw with each other, as hereinafter fully described.
A is a circular plate, which is made with an upwardly-proj ecting dan ge, a', three-eighths of an inch (more or less) in depth. The nange a is designed to enable the plate to be attached to the under side of the table of those sewingmachines in which the machine is secured to the table by bolts and nuts. Upon the plate A is formed an arm, B, which is notched or slotted, or has lugs formed upon it, to which is pivoted an arm, C, to lugs formed upon thc outer end of which is pivoted the journals of a roller, D. The face of the roller D is concaved, as shown, to prevent the belt from running off the pulley when pressure is applied toit. rlhe outer end of the arm B projects beyond the pivoting-point of the arm C, and has a screw-hole formed in it, to receive the hand-screw E, the rounded forward end of which rests against the pivoted arm C, so that by turning the screw E in, the arm U will be forced forward, pressing the roller D against A WILLIAM B. cLEvEs.
Witnesses:
W. H. DooNEn, F. G. RYAN.
US148808D Improvement in belt-tighteners Expired - Lifetime US148808A (en)

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US148808A true US148808A (en) 1874-03-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2555733A (en) * 1946-05-15 1951-06-05 Stacom Process Corp Roller press
US4689025A (en) * 1985-07-03 1987-08-25 Outboard Marine Corporation Power steering system
US6615809B1 (en) 2000-07-27 2003-09-09 Allen L. Martin External drive supercharger

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2555733A (en) * 1946-05-15 1951-06-05 Stacom Process Corp Roller press
US4689025A (en) * 1985-07-03 1987-08-25 Outboard Marine Corporation Power steering system
US6615809B1 (en) 2000-07-27 2003-09-09 Allen L. Martin External drive supercharger
US20050016509A1 (en) * 2000-07-27 2005-01-27 Martin Allen L. External drive supercharger
US7028677B2 (en) 2000-07-27 2006-04-18 Martin Allen L External drive supercharger

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