GB724522A - Improvements in tensioners for chains, belts and the like - Google Patents

Improvements in tensioners for chains, belts and the like

Info

Publication number
GB724522A
GB724522A GB3033751A GB3033751A GB724522A GB 724522 A GB724522 A GB 724522A GB 3033751 A GB3033751 A GB 3033751A GB 3033751 A GB3033751 A GB 3033751A GB 724522 A GB724522 A GB 724522A
Authority
GB
United Kingdom
Prior art keywords
plunger
cylinder
chain
groove
pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3033751A
Inventor
Onissim Burawoy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renold Ltd
Original Assignee
Renold Chains Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renold Chains Ltd filed Critical Renold Chains Ltd
Priority to GB3033751A priority Critical patent/GB724522A/en
Priority to ES0206985A priority patent/ES206985A1/en
Publication of GB724522A publication Critical patent/GB724522A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
    • F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
    • F16H7/1254—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means
    • F16H7/1263—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially straight path
    • F16H7/1272—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley without vibration damping means where the axis of the pulley moves along a substantially straight path with means for impeding reverse motion
    • 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
    • F16H2007/0802—Actuators for final output members
    • F16H2007/0806—Compression coil springs

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

724,522. Belt, rope and chain gearing. RENOLD CHAINS, Ltd., [formerly RENOLD & COVENTRY CHAIN CO.]. Dec. 4, 1952 [Dec. 28, 1951], No. 30337/51. Class 80 (1). A tensioning device com prises rollers 2 bearing agains a chain and carried on the end of a plunger 10 in a bore of a fixed housing 12. The plunger 10 is passed outwardly by a spring 20, the other end o which bears against a cylinder 18 sliding within a bore of the plunger. A helical groove 24 is formed on the surface of the cylinder 18 the upper wall 26 of which is plain whilst the lower wall 28 is serrated. A radially disposed pin 30 on the plunger 10 engages in the groove 24 whereby free move ment outwards of the plunge 10 under the spring pressure is allowed owing to the pin 3( running along the plain wall 26 of the groove 24 and rotating the cylinder 18 whilst inward movement of the plunger is pre vented by the pin 30 engaging in the serrations of the lower wall 28. In order to draw the plunger back into its housing 12 when required, for replacing a chain, for example, the cylinder 18 can be rotated by means of a key inserted through the bottom of housing 12, the pin 30 running out of the groove 24 and engaging behind the end face of the cylinder 18 to hold the spring 20 in compression. The action of the spring 20 can be assisted by oil fed through a spigot 35 which can also pass through a passage 36 to the bearings of the rollers 2. The rollers 2 may be replaced by a single wide roller for a belt, a toothed wheel for a chain or a grooved pulley for a rope or a pad for bearing against a chain may be provided. The cylinder 18 may surround the plunger 10 instead of working inside it and the pin 30 may be provided on the cylinder 18 and the groove 24 in the plunger 10. Both surfaces of the groove 24 may be smooth and the respective surfaces of the engaging pin may have different coefficients of friction, for example one surface might be of rubber. To allow some return movement of the plunger 10 to compensate for temperature expansion and unevenness of the chain the groove 24 may be of greater width and separate pins or projections can be provided for engaging the opposite walls. Specification 724,523 is referred to.
GB3033751A 1951-12-28 1951-12-28 Improvements in tensioners for chains, belts and the like Expired GB724522A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3033751A GB724522A (en) 1951-12-28 1951-12-28 Improvements in tensioners for chains, belts and the like
ES0206985A ES206985A1 (en) 1951-12-28 1952-12-27 Improvements in tensioners for chains, belts and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3033751A GB724522A (en) 1951-12-28 1951-12-28 Improvements in tensioners for chains, belts and the like

Publications (1)

Publication Number Publication Date
GB724522A true GB724522A (en) 1955-02-23

Family

ID=10306029

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3033751A Expired GB724522A (en) 1951-12-28 1951-12-28 Improvements in tensioners for chains, belts and the like

Country Status (2)

Country Link
ES (1) ES206985A1 (en)
GB (1) GB724522A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152859B (en) * 1956-03-06 1963-08-14 Index Werke K G Chain tensioner for chain transmission
EP1022488A1 (en) * 1999-01-25 2000-07-26 Hutchinson Tensioner for drive belt, kinematic circuit and engine comprising such tensioner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152859B (en) * 1956-03-06 1963-08-14 Index Werke K G Chain tensioner for chain transmission
EP1022488A1 (en) * 1999-01-25 2000-07-26 Hutchinson Tensioner for drive belt, kinematic circuit and engine comprising such tensioner
FR2788825A1 (en) * 1999-01-25 2000-07-28 Hutchinson TENSIONER FOR BELT, KINEMATICS CIRCUIT AND MOTOR COMPRISING SUCH A TENSIONER
US6422964B1 (en) 1999-01-25 2002-07-23 Hutchinson Belt tensioner, and a drive system and engine including such a tensioner

Also Published As

Publication number Publication date
ES206985A1 (en) 1953-02-01

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