GB452294A - Improvements in and relating to toothed gearing - Google Patents

Improvements in and relating to toothed gearing

Info

Publication number
GB452294A
GB452294A GB535535A GB535535A GB452294A GB 452294 A GB452294 A GB 452294A GB 535535 A GB535535 A GB 535535A GB 535535 A GB535535 A GB 535535A GB 452294 A GB452294 A GB 452294A
Authority
GB
United Kingdom
Prior art keywords
drawn
gear
pinion
teeth
arc
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
GB535535A
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.)
Timken Detroit Axle Co
Original Assignee
Timken Detroit Axle 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 Timken Detroit Axle Co filed Critical Timken Detroit Axle Co
Priority to GB535535A priority Critical patent/GB452294A/en
Publication of GB452294A publication Critical patent/GB452294A/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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/08—Profiling
    • F16H55/0846—Intersecting-shaft arrangement of the toothed members
    • 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
    • F16H48/00—Differential gearings
    • F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
    • F16H48/28—Arrangements for suppressing or influencing the differential action, e.g. locking devices using self-locking gears or self-braking gears

Landscapes

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

Abstract

452,294. Toothed gearing. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Timken-Detroit Axle Co. ; 100, Clark Avenue, Detroit, Michigan, U.S.A.) Feb. 19, 1935, No. 5355. [Classes 80 (i) and 80 (ii)] In a variable. leverage pinion and gear having pitch circles of radii in the ratic of the numbers of teeth, the profiles of the pinion and gear are arcs of circles of radii substantially equal to the pitch radii. In designing the teeth of a seven-tooth pinion and twelvetooth gear of pressure angle 25‹, the method shown in the Figure is adopted. The centres 1, 2 of the wheels are connected by a line divided at 3 in the ratio 7 : 12. The touching circles 41, 42 passing through 3 are the pitch circles. Lines 1, 4 and 2, 4 are set off at angles 360‹/7 Î 4 and 360‹/12 Î 4 respectively to the line 1, 2. From the point 4 a circle D is drawn touching the line 1, 2. A line E is drawn at 25‹ to the perpendicular H so as to touch the circle D. With 4 as centre and 4, 1 as radius an arc F is drawn cutting E at 6. With centre 6 and the radius 1, 3 of the pinion pitch circle an arc G is drawn, which forms the tooth profile of the pinion. The other side of the tooth G<1> is drawn symmetrically to G<1> about the line 1, 2. To get the gear tooth profile, an arc I is drawn with centre 4 and radius 4, 2 to cut E at 9. With centre 9 and a radius equal to that of the gear arc J is drawn, which is tangent to G at 7. The portion 7, 8 of the arc J inside the circle D is the profile of the gear tooth 47. The opposite arc J<1> is obtained by symmetry. The invention may be applied to bevel gearing by making the distances 1, 3 and 3, 2 equal to the back cone radii. A twopinion bevel differential for automobiles, in which the planetary pinions have seven teeth and the side gears each twelve teeth is described. One side gear is thus subjected to maximum torque while the other is subjected to minimum torque. Spinning of one driving wheel thus does not result in a complete loss of the power supplied to the gripping wheel. The tops of the teeth are flattened. In a three-pinion differential the side gears preferably have a number of teeth divisible by three.
GB535535A 1935-02-19 1935-02-19 Improvements in and relating to toothed gearing Expired GB452294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB535535A GB452294A (en) 1935-02-19 1935-02-19 Improvements in and relating to toothed gearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB535535A GB452294A (en) 1935-02-19 1935-02-19 Improvements in and relating to toothed gearing

Publications (1)

Publication Number Publication Date
GB452294A true GB452294A (en) 1936-08-19

Family

ID=9794529

Family Applications (1)

Application Number Title Priority Date Filing Date
GB535535A Expired GB452294A (en) 1935-02-19 1935-02-19 Improvements in and relating to toothed gearing

Country Status (1)

Country Link
GB (1) GB452294A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2317180A1 (en) * 2008-12-31 2011-05-04 Viktor Mihailovich Kuzevanov Abik differential

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2317180A1 (en) * 2008-12-31 2011-05-04 Viktor Mihailovich Kuzevanov Abik differential
EP2317180A4 (en) * 2008-12-31 2011-10-12 Viktor Mihailovich Kuzevanov Abik differential

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