GB544335A - Positively and progressively acting speed varying device - Google Patents

Positively and progressively acting speed varying device

Info

Publication number
GB544335A
GB544335A GB25574/39A GB2557439A GB544335A GB 544335 A GB544335 A GB 544335A GB 25574/39 A GB25574/39 A GB 25574/39A GB 2557439 A GB2557439 A GB 2557439A GB 544335 A GB544335 A GB 544335A
Authority
GB
United Kingdom
Prior art keywords
wheels
shaft
driving
elliptical
spiral
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
GB25574/39A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB544335A publication Critical patent/GB544335A/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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/42—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion with gears having teeth formed or arranged for obtaining multiple gear ratios, e.g. nearly infinitely variable

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)

Abstract

544,335. Variable-speed gearing. BESCHKINE, L. Sept. 11. 1939, No. 25574. Convention date, Sept. 9, 1938. [Class 80 (ii)] The. driving-shaft is provided with elliptical or like wheels gearing continuously with similar wheels mounted on the driven shaft and adapted to be successively coupled thereto during equal arcs of movement, change of speed being effected by adjusting the. relative angular position of each pair of wheels. The pairs of wheels may constitute epicyclic trains. In the mechanism shown in Fig. 1. elliptical wheels 1, 2, 3, 4 on the driving-shaft P, connected to the motorshaft M, engage similar wheels 1<SP>1</SP>, 2<SP>1</SP>, 3<SP>1</SP>, 4<SP>1</SP> on the driven shaft R. The wheels 1, 3 and 2, 4 are secured to 'sleeves m<SP>1</SP>, m<SP>2</SP> having helical grooves co-operating with helical ribs h<SP>1</SP>, h<SP>2</SP>, respectively, on the driving-shaft. The wheels 1' .. 4' are loose on the driven shaft and are provided with magnetic clutches e<SP>1</SP> . . e<SP>4</SP> in circuit with brushes b<SP>1</SP> . b<SP>4</SP> which engage successively a segment 9 on the motor-shaft. During each revolution of 'the driving-shaft, the wheels 1<SP>1</SP> . . 4<SP>1</SP> are coupled during successive quarter- 'revolutions, and the driven shaft is driven at a substantially uniform speed. To change speed, the driving shaft is moved longitudinally by means of a lever L, and the ribs h<SP>1</SP>, h<SP>2</SP> rotate the wheels and thereby adjust the relative angular position of 'each pair thereof. The wheels are provided with counterweights 12. The pairs 3, 3<SP>1</SP> and 4, 4<SP>1</SP> of wheels may be replaced by fly-wheels. To suppress slight periodical variations in the speed of the driven shaft, spiral wheels and spiral intermediate wheels may be employed. In the mechanism shown in Fig. 4, a single spiral-wheel a' on the driving-shaft M engages spiral wheels a2, a<SP>1</SP>2 on sleeves i2, i<SP>1</SP>2 mounted on shafts I, I<SP>1</SP>. Other sleeves i3, i<SP>1</SP>3 are provided with spiral wheels a3, a<SP>1</SP>3 engaging spiral wheels a4, a<SP>1</SP>4 on a sleeve 13 which is coupled by an epicyclic train V to the driven shaft R. Reversal can be effected by the epicyclic train. The wheels a4, a<SP>1</SP>4 are provided with magnetic clutches 14, 24 arranged to 'couple the wheels 'to the sleeve 13 during successive half-revolutions. The shafts I, I' are provided With straight splines j2, j<SP>1</SP>2 and helical splines j3, j<SP>1</SP>3 co-bperating with corresponding groves in the associated sleeves. The shafts I, I' are moved longitudinally to adjust the relative angular positions of the wheels, and thereby change speed from neutral to that of the shaft M. For this purpose, a gear-lever is coupled to forks 35, 36 which engage resiliently the shafts I, I<SP>1</SP>. The gear-lever can also be moved into position for engaging a clutch 37 with the sleeve 13 to provide direct drive. In a modification shown in Fig. 8, elliptical wheels A4, A<SP>1</SP>4 on the driving shaft M engage intermediate elliptical wheels A3, A<SP>1</SP>3, in connection with other intermediate elliptical wheels A2, A'2 engaging on elliptical wheel A1 which is secured to the annulus of an epicyclic train V for driving the driven shaft R. The wheels A4, A'4 are each provided with a mechanical clutch consisting of spring-urged, pivoted jaws 57 co-operating with a flange 62. The jaws are automatically opened during successive half-revolutions by means of a rocking cam 54 in connection with a sleeve 51 which is reciprocated by means of a rock-arm 50 and a grooved sleeve 48 on the shaft I. Alternatively, the clutch-cams 64 can, as shown in Fig. 11, be operated by means of rock-arms 63, 70 mounted on the wheels a4, a'4 and co-operating with tracks 65, 71 containing spring-urged slides 66, 71<SP>1</SP> which are retracted by means of cams 73, 68. on the wheels. In the mechanism shown in Fig. 12 planetary elliptical wheels A2, A<SP>1</SP>2, A3, A'3 are mounted on a carrier Y on the driving- shaft M. The wheels A2, A<SP>1</SP>2 co-operate with a wheel A' on the driven-shaft R, and the wheels A3, A<SP>1</SP>3 co-operate with wheels A4, A<SP>1</SP>4 which are locked during alternate half-revolutions by means of electromagnets 74, 75 in circuit with contacts on the carrier Y.
GB25574/39A 1938-09-09 1939-09-11 Positively and progressively acting speed varying device Expired GB544335A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR544335X 1938-09-09

Publications (1)

Publication Number Publication Date
GB544335A true GB544335A (en) 1942-04-09

Family

ID=8932211

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25574/39A Expired GB544335A (en) 1938-09-09 1939-09-11 Positively and progressively acting speed varying device

Country Status (1)

Country Link
GB (1) GB544335A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473157A (en) * 1945-03-15 1949-06-14 Packard Motor Car Co Transmission mechanism
US3295393A (en) * 1964-05-06 1967-01-03 Boeing Co Transmission
US3659479A (en) * 1970-01-09 1972-05-02 Laszlo J Kiss Positive continuously constant gear-mesh speed change system for planetary drive systems and the like
EP0424752A2 (en) * 1989-10-25 1991-05-02 Riemscheid, Helmut, Dipl.-Ing. Stepless variable speed drive

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2473157A (en) * 1945-03-15 1949-06-14 Packard Motor Car Co Transmission mechanism
US3295393A (en) * 1964-05-06 1967-01-03 Boeing Co Transmission
US3659479A (en) * 1970-01-09 1972-05-02 Laszlo J Kiss Positive continuously constant gear-mesh speed change system for planetary drive systems and the like
EP0424752A2 (en) * 1989-10-25 1991-05-02 Riemscheid, Helmut, Dipl.-Ing. Stepless variable speed drive
EP0424752A3 (en) * 1989-10-25 1992-05-27 Gkn Automotive Aktiengesellschaft Stepless variable speed drive

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