GB756988A - Improvements in or relating to an electric hammer - Google Patents

Improvements in or relating to an electric hammer

Info

Publication number
GB756988A
GB756988A GB8967/54A GB896754A GB756988A GB 756988 A GB756988 A GB 756988A GB 8967/54 A GB8967/54 A GB 8967/54A GB 896754 A GB896754 A GB 896754A GB 756988 A GB756988 A GB 756988A
Authority
GB
United Kingdom
Prior art keywords
springs
casing
frame
shaft
slide
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
GB8967/54A
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 GB756988A publication Critical patent/GB756988A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2211/00—Details of portable percussive tools with electromotor or other motor drive
    • B25D2211/003—Crossed drill and motor spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

756,988. Percussive tools. MACCHIONI, P. A., and MACCHIONI, L. March 26, 1954 [March 27, 1953], No. 8967/54. Class 124. An electrically driven hammer tool comprises a main casing and a hammer head in the form of a rectangular frame reciprocably mounted in the casing on a connecting rod by means of double acting springs, the other end of the connecting rod being driven by an electric motor through a crank. As shown an electric motor 2 mounted in a casing 1 drives, through belts 7, a shaft 9 having an eccentric pin 13 on which is pivotally mounted one end of a connecting rod 21 the other end of which is resiliant and horse-shoe shaped and is connected to a slide 23 mounted in a frame 24. The frame 24 is mounted in guideways 25 in a cylinder 26 rigidly secured to the body 2. The slide 23 is held in the frame by two springs 28 and 30 and a rubber buffer 31, the spring 28, in a stressed condition, being fitted between the slide 23 and an outside flange on a tumbler 29, and the spring 30 between the frame 24 and the inner side of the tumbler 29. The springs may be replaced by a rubber buffer or by springs encased in rubber and the buffer 31 may be replaced by springs. A pulley on the shaft 9 drives by a belt a shaft 34 carrying a bevel gear 36 engaging a gear 37 on the drill chuck for rotating the drill. A fan 14 on the shaft 9 drives air into the motor casing and a fan 18 on the motor extracts air from the casing.
GB8967/54A 1953-03-27 1954-03-26 Improvements in or relating to an electric hammer Expired GB756988A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT756988X 1953-03-27

Publications (1)

Publication Number Publication Date
GB756988A true GB756988A (en) 1956-09-12

Family

ID=11315811

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8967/54A Expired GB756988A (en) 1953-03-27 1954-03-26 Improvements in or relating to an electric hammer

Country Status (2)

Country Link
DE (1) DE1685713U (en)
GB (1) GB756988A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136722A (en) * 1983-03-21 1984-09-26 Hilti Ag Electro-pneumatic hammer drill
DE3417735A1 (en) * 1983-05-14 1984-11-22 Toshio Tokio/Tokyo Mikiya ELECTRICALLY ACTUATED MULTI-NEEDLE DRIVING TOOL
DE3500397A1 (en) * 1984-03-24 1985-10-03 Matsushita Electric Works, Ltd., Kadoma, Osaka Electric percussion drilling machine
EA028705B1 (en) * 2015-09-14 2017-12-29 Эмиль Самудинович Абдраимов Concrete breaker

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1146228B (en) * 1959-07-27 1963-03-28 Werner & Mertz G M B H Chemisc Applicator for liquid and pasty masses

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136722A (en) * 1983-03-21 1984-09-26 Hilti Ag Electro-pneumatic hammer drill
DE3417735A1 (en) * 1983-05-14 1984-11-22 Toshio Tokio/Tokyo Mikiya ELECTRICALLY ACTUATED MULTI-NEEDLE DRIVING TOOL
DE3417735C2 (en) * 1983-05-14 1989-07-27 Toshio Tokio/Tokyo Jp Mikiya
DE3500397A1 (en) * 1984-03-24 1985-10-03 Matsushita Electric Works, Ltd., Kadoma, Osaka Electric percussion drilling machine
EA028705B1 (en) * 2015-09-14 2017-12-29 Эмиль Самудинович Абдраимов Concrete breaker

Also Published As

Publication number Publication date
DE1685713U (en) 1954-10-28

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