GB493908A - Improvements in or relating to cyclically variable speed driving mechanism - Google Patents

Improvements in or relating to cyclically variable speed driving mechanism

Info

Publication number
GB493908A
GB493908A GB732637A GB732637A GB493908A GB 493908 A GB493908 A GB 493908A GB 732637 A GB732637 A GB 732637A GB 732637 A GB732637 A GB 732637A GB 493908 A GB493908 A GB 493908A
Authority
GB
United Kingdom
Prior art keywords
shaft
cut
driving
speed
lever
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
GB732637A
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.)
THRISSELL ENGINEERING Co
Original Assignee
THRISSELL ENGINEERING Co
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 THRISSELL ENGINEERING Co filed Critical THRISSELL ENGINEERING Co
Priority to GB732637A priority Critical patent/GB493908A/en
Publication of GB493908A publication Critical patent/GB493908A/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
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H35/02—Gearings or mechanisms with other special functional features for conveying rotary motion with cyclically varying velocity ratio

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

493,908. Cutting paper board &c. MORRISON, J. L. M., and THRISSELL ENGINEERING CO., Ltd. March 12, 1937, No. 7326. [Class 31 (i)] [Also in Group XXIV] A cyclically variable speed driving-mechanism comprises two four-bar kinematic chains arranged in series and is particularly applicable to cut-off mechanism in which lengths of fibre board &c. are cut from a moving web, means being provided for varying the length of cut. In one form having concentric driving and driven shafts 1, 3, Fig. 2, the driving lever 4 is connected by a link 5 to an arm 6 of a bell-crank lever. the other arm 7 of which is connected to the driven lever 8. The bell-crank lever is fixed to a shaft 2 which is out of alignment with the concentric shaft. The distance between the axes may be varied by adjusting the pivoted support 10, to determine the position of the axis of the shaft 2 along an arcuate path. When the mechanism drives cutters 15, 16, the length of cut is varied by altering the speed of the driving shaft 1, the position of the shaft 2 being adjusted so as to arrange that at the time of cutting the speed of the cutters is the same as that of the constant-speed web. In a modification the intermediate shaft 2 is adjustable along a straight path, its bearing 112, Fig. 5 being moved by a screw and nut 116, 117 and wormgearing 118. The levers 6, 7, 8, 9 are in the form of crank discs. British Specifications 412,127, 437,029, and U.S.A. Specification 2,059,412 are referred to.
GB732637A 1937-03-12 1937-03-12 Improvements in or relating to cyclically variable speed driving mechanism Expired GB493908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB732637A GB493908A (en) 1937-03-12 1937-03-12 Improvements in or relating to cyclically variable speed driving mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB732637A GB493908A (en) 1937-03-12 1937-03-12 Improvements in or relating to cyclically variable speed driving mechanism

Publications (1)

Publication Number Publication Date
GB493908A true GB493908A (en) 1938-10-12

Family

ID=9830972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB732637A Expired GB493908A (en) 1937-03-12 1937-03-12 Improvements in or relating to cyclically variable speed driving mechanism

Country Status (1)

Country Link
GB (1) GB493908A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2434314A1 (en) * 1978-08-21 1980-03-21 Jagenberg Werke Ag IRREGULAR TRANSMISSION

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2434314A1 (en) * 1978-08-21 1980-03-21 Jagenberg Werke Ag IRREGULAR TRANSMISSION

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