GB250379A - Improvements in drilling machines - Google Patents

Improvements in drilling machines

Info

Publication number
GB250379A
GB250379A GB789925A GB789925A GB250379A GB 250379 A GB250379 A GB 250379A GB 789925 A GB789925 A GB 789925A GB 789925 A GB789925 A GB 789925A GB 250379 A GB250379 A GB 250379A
Authority
GB
United Kingdom
Prior art keywords
drill
drilling
spindle
sleeve
screwed
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
GB789925A
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 GB789925A priority Critical patent/GB250379A/en
Publication of GB250379A publication Critical patent/GB250379A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping On Spindles (AREA)

Abstract

250,379. Wade, F. R. March 24, 1925. Drilling-machines; attachments for drilling; chucks.-In a vertical spindle drilling-machine the spindle is either wholly or partly hollow and is of polygonal cross-section so as to rotate with but be vertically slidable in a driven sleeve. The sleeve p may be cylindrical internally for the greater part of its length, one or both ends being swaged down to fit the octagonal &c. drill spindle r. The lower'end of the drill spindle is tapered and split, to constitute a tool chuck, the. jaws being closed by a screw cap 7 and the drill being positively driven by the engagement of a flat on its shank, with a pin 9 passing through the drill spindle and a collar 8 screwed thereon. The driving pulley q may be cast on to the sleeve p and forms a seat for a spring y, Fig. 1, which retains the drill in its uppermost position. The frame of the machine may be of aluminium or aluminium alloy, and is provided with screwed lugs in its base for attachment to a bench or lathe bed &c. The work table 10 has a hollow stem which may be provided at its upper end with a recess to receive a disc or headed plug for use when drilling small articles.
GB789925A 1925-03-24 1925-03-24 Improvements in drilling machines Expired GB250379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB789925A GB250379A (en) 1925-03-24 1925-03-24 Improvements in drilling machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB789925A GB250379A (en) 1925-03-24 1925-03-24 Improvements in drilling machines

Publications (1)

Publication Number Publication Date
GB250379A true GB250379A (en) 1926-04-15

Family

ID=9841936

Family Applications (1)

Application Number Title Priority Date Filing Date
GB789925A Expired GB250379A (en) 1925-03-24 1925-03-24 Improvements in drilling machines

Country Status (1)

Country Link
GB (1) GB250379A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604127A (en) * 1948-04-20 1952-07-22 Grzybowski John Rotary and reciprocating tool operating machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2604127A (en) * 1948-04-20 1952-07-22 Grzybowski John Rotary and reciprocating tool operating machine

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