GB433708A - Improvements in pneumatic percussive tools for expanding hollow bodies - Google Patents

Improvements in pneumatic percussive tools for expanding hollow bodies

Info

Publication number
GB433708A
GB433708A GB4949/34A GB494934A GB433708A GB 433708 A GB433708 A GB 433708A GB 4949/34 A GB4949/34 A GB 4949/34A GB 494934 A GB494934 A GB 494934A GB 433708 A GB433708 A GB 433708A
Authority
GB
United Kingdom
Prior art keywords
tool
percussive
valve
muff
withdraw
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
GB4949/34A
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.)
Henschel and Sohn GmbH
Original Assignee
Henschel and Sohn GmbH
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 Henschel and Sohn GmbH filed Critical Henschel and Sohn GmbH
Publication of GB433708A publication Critical patent/GB433708A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/08—Means for driving the impulse member comprising a built-in air compressor, i.e. the tool being driven by air pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

433,708. Percussive drills. HENSCHEL & SOHN AKT.-GES., 2, Henschelstrasse, Cassel, Germany. Feb. 14, 1934, Nos. 4949, 4950, and 4951. Convention dates, Feb. 20, 1933, May 13, 1933, and July 31, 1933. [Class 124] [See also Group XXII] A percussive tool 1 has a muff 3 secured to its front end which encloses a tool 5 used for expanding tube ends. To withdraw the tool 5 from the work the percussive tool 1 is pulled in that direction, thus bringing the collar 9 of the tool against the outer face of the muff. The reciprocating piston strikes the anvil plate 2 producing blows to withdraw the tool. The throttle valve 12 has two springs 19, 20 the first of which acts against the normal travel of the valve, the second part acting against the valve when it is pressed further to open the channel 18 supplying extra air for the return blows. A handle 24 is pivotally attached to the front end of the tool body. The expanding punch has a conical shoulder b c, the angle of which is steep enough to expand the tube end temporarily and so loosen the part a.
GB4949/34A 1933-02-20 1934-02-14 Improvements in pneumatic percussive tools for expanding hollow bodies Expired GB433708A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE433708X 1933-02-20

Publications (1)

Publication Number Publication Date
GB433708A true GB433708A (en) 1935-08-14

Family

ID=6501417

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4949/34A Expired GB433708A (en) 1933-02-20 1934-02-14 Improvements in pneumatic percussive tools for expanding hollow bodies

Country Status (1)

Country Link
GB (1) GB433708A (en)

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