GB492325A - Improvements in ignition timing devices for internal combustion engines - Google Patents

Improvements in ignition timing devices for internal combustion engines

Info

Publication number
GB492325A
GB492325A GB852337A GB852337A GB492325A GB 492325 A GB492325 A GB 492325A GB 852337 A GB852337 A GB 852337A GB 852337 A GB852337 A GB 852337A GB 492325 A GB492325 A GB 492325A
Authority
GB
United Kingdom
Prior art keywords
vernier
cam
shaft
coupling
discs
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
GB852337A
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
Priority to GB852337A priority Critical patent/GB492325A/en
Publication of GB492325A publication Critical patent/GB492325A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/02—Advancing or retarding ignition; Control therefor non-automatically; dependent on position of personal controls of engine, e.g. throttle position

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

492,325. Adjustably securing cams on shafts. EYRE, D., and ROBINSON, N. R. March 23, 1937, No. 8523. [Class 80 (ii)] In an ignition-timer for an internal-combustion engine, a vernier adjusting means for varying the angular relation of a contactbreaker cam D<1> on its shaft A comprises an intermediate disc B<1>, having on its opposed faces oppositely-directed ratchet teeth differing in number and engaging respectively with complementary teeth on a sleeve B, fixed to the shaft A, and on a sleeve B<2>, which latter drives the cam D<1> through facial teeth E, which are offset from a diameter so that the cam D<1> can be removed and replaced only in the same precise angular relationship without affecting the setting of the vernier-toothed coupling. The vernier discs are rigidly held together and the cam is held on the shaft by a screw D' threaded into an extension A<1> of the shaft A. A spring C, bearing on an expansible ring C<2>, permanently maintains the vernier discs in resilient engagement. After removal of the screw D<2>, vernier adjustment is effected by turning the cam D<1> alternately forwards and backwards so that the intermediate disc B<1> ratchets alternately over the driving and driven discs B, B<2>. The spring C permits this ratcheting, and also holds the vernier together if the cam D<1> is removed. In a modification, the cam is hollow and the vernier coupling is arranged inside it. The offset-tooth coupling is arranged between the lower vernier ring and the shaft, so that the vernier coupling stays with the cam when the latter is removed.
GB852337A 1937-03-23 1937-03-23 Improvements in ignition timing devices for internal combustion engines Expired GB492325A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB852337A GB492325A (en) 1937-03-23 1937-03-23 Improvements in ignition timing devices for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB852337A GB492325A (en) 1937-03-23 1937-03-23 Improvements in ignition timing devices for internal combustion engines

Publications (1)

Publication Number Publication Date
GB492325A true GB492325A (en) 1938-09-19

Family

ID=9854067

Family Applications (1)

Application Number Title Priority Date Filing Date
GB852337A Expired GB492325A (en) 1937-03-23 1937-03-23 Improvements in ignition timing devices for internal combustion engines

Country Status (1)

Country Link
GB (1) GB492325A (en)

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