GB182535A - Improvements in reciprocating electric motors and percussive tools embodying such motors - Google Patents

Improvements in reciprocating electric motors and percussive tools embodying such motors

Info

Publication number
GB182535A
GB182535A GB955321A GB955321A GB182535A GB 182535 A GB182535 A GB 182535A GB 955321 A GB955321 A GB 955321A GB 955321 A GB955321 A GB 955321A GB 182535 A GB182535 A GB 182535A
Authority
GB
United Kingdom
Prior art keywords
core
casing
tool
sector
spring
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
GB955321A
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.)
ALBERTO BETTICA GUIDO MAZZA AU
Original Assignee
ALBERTO BETTICA GUIDO MAZZA AU
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 ALBERTO BETTICA GUIDO MAZZA AU filed Critical ALBERTO BETTICA GUIDO MAZZA AU
Priority to GB955321A priority Critical patent/GB182535A/en
Publication of GB182535A publication Critical patent/GB182535A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
    • H02K33/10—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the alternate energisation and de-energisation of the single coil system is effected or controlled by movement of the armatures

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

182,535. Bettica, A., Mazza, G., and Macchioni, A. March 31, 1921. Percussive h and tools. - In an electric motor forming part of a percussive tool, in which a magnet core is moved in one direct i o n electromagnetically and in the other by spring means, the casing for the coils 14, Fig. 1, is made of substantially C-shaped magnetic plates or strips 17 spaced around the coil, as shown in Fig. 2, and engaging radial grooves in the outer surfaces of end covers 16 made of insulating material. One pole of the magnet is made of a bundle of magnetic laminµ 19 and the tool-holder 18 and the other by the enlarged head of the core 23 composed of magnetic laminae riveted or otherwise secured together. The core is normally held up by a spring 27 engaging a flange 26 on its head and has a coned opening 25 for bringing together, by means of abutment pieces 33, two leaf springs 32, and thus closing the circuit. The springs are supported in an insulating block 43 and may be adjustably separated by a finger-operated wedge 53. One spring, as shown in Fig. 3, is connected to an insulated metal sector 39 and the other is connected through the coils 14 tn the supply. The connection to the other supply main 42 is made by a finger-operated segment 45 which connects the sector 39 to another sector 40. The circuit is made and broken at inside contact blocks 34, Fig. 1, and a protecting plate 55 prevents sparking to the tool frame. Lubricating ducts may lead from the bottom of the opening 25 to give oil access from inside the core-guiding sleeve 13 to the tappets 33. The tool holder carries a hard anvil piece 51 at one end and has an adjustable nut 20 at the other end in a recess in the framing 50 for limiting the stroke. The casing 15 may be made of aluminium sheets connected by bolts, and ventilating ducts may be provided in the casing, core and pole-piece. The casing is preferably earthed. In place of using a single core as shown, the cores of several magnets may be connected together.
GB955321A 1921-03-31 1921-03-31 Improvements in reciprocating electric motors and percussive tools embodying such motors Expired GB182535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB955321A GB182535A (en) 1921-03-31 1921-03-31 Improvements in reciprocating electric motors and percussive tools embodying such motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB955321A GB182535A (en) 1921-03-31 1921-03-31 Improvements in reciprocating electric motors and percussive tools embodying such motors

Publications (1)

Publication Number Publication Date
GB182535A true GB182535A (en) 1922-06-30

Family

ID=9874213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB955321A Expired GB182535A (en) 1921-03-31 1921-03-31 Improvements in reciprocating electric motors and percussive tools embodying such motors

Country Status (1)

Country Link
GB (1) GB182535A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5078416A (en) * 1989-12-07 1992-01-07 Keyes Kenneth S Drive-shaft driven bicycle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5078416A (en) * 1989-12-07 1992-01-07 Keyes Kenneth S Drive-shaft driven bicycle

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