GB174217A - Improvements in or relating to coal cutting implements - Google Patents

Improvements in or relating to coal cutting implements

Info

Publication number
GB174217A
GB174217A GB3072820A GB3072820A GB174217A GB 174217 A GB174217 A GB 174217A GB 3072820 A GB3072820 A GB 3072820A GB 3072820 A GB3072820 A GB 3072820A GB 174217 A GB174217 A GB 174217A
Authority
GB
United Kingdom
Prior art keywords
chisel
coal
relating
tool
compressed air
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
GB3072820A
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 GB3072820A priority Critical patent/GB174217A/en
Publication of GB174217A publication Critical patent/GB174217A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D7/00—Picks

Landscapes

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

Abstract

174,217. Fachinger, W. Oct. 30, 1920. Percussive hand tools. - A coal-cutting chisel driven by compressed air is mounted on a handle at right-angles to the tool, to be used as a lever for removing the lump of coal. In the form shown in Fig. 3, a hammer piston 17 transmits blows to a chisel 4 through intermediate members 21, 23, which may be replaced by a curved member suitably guided. Alternatively, the piston 17 may reciprocate in line with the chisel, a cushioning space 13 being provided and supplied with compressed air by a passage 11. A relief port 20 is provided to accommodate an idle blow. Fig. 6 shows another form of the tool.
GB3072820A 1920-10-30 1920-10-30 Improvements in or relating to coal cutting implements Expired GB174217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3072820A GB174217A (en) 1920-10-30 1920-10-30 Improvements in or relating to coal cutting implements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3072820A GB174217A (en) 1920-10-30 1920-10-30 Improvements in or relating to coal cutting implements

Publications (1)

Publication Number Publication Date
GB174217A true GB174217A (en) 1922-01-26

Family

ID=10312209

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3072820A Expired GB174217A (en) 1920-10-30 1920-10-30 Improvements in or relating to coal cutting implements

Country Status (1)

Country Link
GB (1) GB174217A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684839A (en) * 1947-09-22 1954-07-27 Rice Charles John Hand operated pick

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684839A (en) * 1947-09-22 1954-07-27 Rice Charles John Hand operated pick

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