US1782318A - Electrical turning gear for starting internal-combustion engines - Google Patents

Electrical turning gear for starting internal-combustion engines Download PDF

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Publication number
US1782318A
US1782318A US332970A US33297029A US1782318A US 1782318 A US1782318 A US 1782318A US 332970 A US332970 A US 332970A US 33297029 A US33297029 A US 33297029A US 1782318 A US1782318 A US 1782318A
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United States
Prior art keywords
combustion engines
turning gear
starting internal
shaft
pinion
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Expired - Lifetime
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US332970A
Inventor
Royce Frederick Henry
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Rolls Royce PLC
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Rolls Royce PLC
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Application filed by Rolls Royce PLC filed Critical Rolls Royce PLC
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/001—Arrangements thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/13—Machine starters
    • Y10T74/131—Automatic

Definitions

  • This invention has reference to electric turning gear for starting internal combustion engines, of the type in which a pinion fixed for rotation on an extension of the armature shaft of the starting motor, is caused to more axially into engagement with a toothed wheel geared to the engine shaft.
  • the pinion in turning gear of the type referred to as heretofore made, the pinion has been arranged in its normal (i. e, out of engagement) position either more remote from, or nearer to, the motor than the toothed wheel with which it engages.
  • T he object of this invention is to eliminate or minimize this disadvantageand to make other constructional improvements.
  • the relative diameter of the shaft, and the bearing in the end boss of the motor casing adjacent the pinion on the one hand, and of the pinion on the other hand, are such that the pinion (following the axial movement of the shaft) can be made to recede (when in its normal position) into the hollow of the hearing.
  • Fig. 1 shows a sectional elevation of the starter motor, and Fig. 2 a. portion of Fig. 1, to an enlarged scale.
  • a is a bracket forming part of the engine crankshaftcase, 0 the case containing the starter connected to such bracket, a an end cover of the case of the starter, a a flanged sleeve and a a bearing bush, 6 are poles of the starter motor, 6 the field windings, b is the armature and b the commutator, 0 is the shaft of the motor having an enlarged part a rotating in the hearing bush a and o is the pinion ri idly mounted on the shaft (for rotation) of the smaller diameter than the enlarged part 0 cl is the fly wheel of the engine.
  • the fly-wheel can be arranged in close proximity to the end of the motor and when the pinion is engaged therewith such pinion is in close proximity to the adjacent hearing of the shaft.
  • Electric turning gear for starting internal combustion engines of the type in which a pinion fined for rotation on an extension of the armature shaft of a starting motor is FREDERICK HENRY ROYCE.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

Nov. 18, 1930.
F. H. ROYCE 1,782,318
ELECTRICAL TURNING GEAR FOR STARTING INTERNAL COMBUSTION ENGINES Filed Jan. 16, 1929 n INVENTOR. twmyglfiw By M ATTORNEYf Eatented Nov. 18, 1930 UNETED STATES PATENT GFFICE FREDERICK HENRY BOYCE, OF WEST WITTERING, NEAR CHICI-IESTER, ENGLAND, AS-
SIGNOR TO ROLLS ROYCE LIMITED, OF DEE-BY, ENGLAND ELECTRICAL TURNING GEAR- FOR- STARTING INTERNAL-COMBUSTION ENGINES Application filed January 16, 1929, Serial No. 332,970, and in Great Britain February 14, 1928.
This invention has reference to electric turning gear for starting internal combustion engines, of the type in which a pinion fixed for rotation on an extension of the armature shaft of the starting motor, is caused to more axially into engagement with a toothed wheel geared to the engine shaft.
in turning gear of the type referred to as heretofore made, the pinion has been arranged in its normal (i. e, out of engagement) position either more remote from, or nearer to, the motor than the toothed wheel with which it engages.
The latter arrangement is often desirable to meet the exigencies of design of the engine, but has a comparative disadvantage, in that the over-hang or extended part of the shaft beyond its adjacent hearing, is at its maximum when the instrument is Working, thus throwing a great bending strain on the shaft and heavily loading the hearings.
T he object of this invention is to eliminate or minimize this disadvantageand to make other constructional improvements.
According to this invention the relative diameter of the shaft, and the bearing in the end boss of the motor casing adjacent the pinion on the one hand, and of the pinion on the other hand, are such that the pinion (following the axial movement of the shaft) can be made to recede (when in its normal position) into the hollow of the hearing.
An example of this invention is illustrated in the accompanying drawings.
Fig. 1 shows a sectional elevation of the starter motor, and Fig. 2 a. portion of Fig. 1, to an enlarged scale.
a is a bracket forming part of the engine crankshaftcase, 0 the case containing the starter connected to such bracket, a an end cover of the case of the starter, a a flanged sleeve and a a bearing bush, 6 are poles of the starter motor, 6 the field windings, b is the armature and b the commutator, 0 is the shaft of the motor having an enlarged part a rotating in the hearing bush a and o is the pinion ri idly mounted on the shaft (for rotation) of the smaller diameter than the enlarged part 0 cl is the fly wheel of the engine.
vVith apparatus as described the fly-wheel can be arranged in close proximity to the end of the motor and when the pinion is engaged therewith such pinion is in close proximity to the adjacent hearing of the shaft.
lVhat I claim is 1. Electric turning gear for starting internal combustion engines of the type in which a pinion fined for rotation on an extension of the armature shaft of a starting motor is FREDERICK HENRY ROYCE.
US332970A 1928-02-14 1929-01-16 Electrical turning gear for starting internal-combustion engines Expired - Lifetime US1782318A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1782318X 1928-02-14

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US1782318A true US1782318A (en) 1930-11-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772921A (en) * 1972-12-21 1973-11-20 Gen Motors Corp Engine starter
US4829195A (en) * 1987-03-12 1989-05-09 Mitsubishi Denki Kabushiki Kaisha Starter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772921A (en) * 1972-12-21 1973-11-20 Gen Motors Corp Engine starter
US4829195A (en) * 1987-03-12 1989-05-09 Mitsubishi Denki Kabushiki Kaisha Starter

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