GB117505A - Improvements in or relating to Electric Drilling Apparatus. - Google Patents

Improvements in or relating to Electric Drilling Apparatus.

Info

Publication number
GB117505A
GB117505A GB1069417A GB1069417A GB117505A GB 117505 A GB117505 A GB 117505A GB 1069417 A GB1069417 A GB 1069417A GB 1069417 A GB1069417 A GB 1069417A GB 117505 A GB117505 A GB 117505A
Authority
GB
United Kingdom
Prior art keywords
gear
relating
pinion
wheel
drilling apparatus
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
GB1069417A
Inventor
Harry Scholey
Frank Knight Woodroffe
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 GB1069417A priority Critical patent/GB117505A/en
Publication of GB117505A publication Critical patent/GB117505A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/008—Gear boxes, clutches, bearings, feeding mechanisms or like equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Structure Of Transmissions (AREA)
  • Gear Transmission (AREA)

Abstract

117,505. Scholey, H., and Woodroffe, F. K. July 25, 1917. Drilling-machines.-Relates to machines driven by self-contained electric motors through variable-speed gear, and consists in placing the gear in'a casing B which is attached to, and supported solely by, the motor casing A. Fig. 1 shows a machine with a 2-speed gear. The motor spindle carries a pinion C in permanent gear with a reducing train D, D<1>, E. On the machine spindle I is feathered a wheel H which can be put in gear with the pinion C or with the wheel E or can be fixed in an intermediate position, by an arm L provided with operating and locking means.
GB1069417A 1917-07-25 1917-07-25 Improvements in or relating to Electric Drilling Apparatus. Expired GB117505A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1069417A GB117505A (en) 1917-07-25 1917-07-25 Improvements in or relating to Electric Drilling Apparatus.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1069417A GB117505A (en) 1917-07-25 1917-07-25 Improvements in or relating to Electric Drilling Apparatus.

Publications (1)

Publication Number Publication Date
GB117505A true GB117505A (en) 1918-07-25

Family

ID=32248181

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1069417A Expired GB117505A (en) 1917-07-25 1917-07-25 Improvements in or relating to Electric Drilling Apparatus.

Country Status (1)

Country Link
GB (1) GB117505A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462251A1 (en) * 1979-07-30 1981-02-13 Hilti Ag STONE DRILLING DEVICE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2462251A1 (en) * 1979-07-30 1981-02-13 Hilti Ag STONE DRILLING DEVICE

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