US1768119A - Electric drilling apparatus - Google Patents

Electric drilling apparatus Download PDF

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Publication number
US1768119A
US1768119A US257980A US25798028A US1768119A US 1768119 A US1768119 A US 1768119A US 257980 A US257980 A US 257980A US 25798028 A US25798028 A US 25798028A US 1768119 A US1768119 A US 1768119A
Authority
US
United States
Prior art keywords
pinion
shaft
disk
drilling apparatus
frame
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 - Lifetime
Application number
US257980A
Other languages
English (en)
Inventor
Contal Camille
Krettly Pierre
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
Application granted granted Critical
Publication of US1768119A publication Critical patent/US1768119A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19293—Longitudinally slidable
    • Y10T74/19353—Pin or crown gears

Definitions

  • the present invention relates to an electric breast drill which can be operated at several speeds, and is so arranged as to have a small size and weight; the said apparatus is of a very responsive character, and is of a most convenient use, and we are enabled to employ a motor of small power.
  • the said apparatus comprises an electric motor whose shaft is situated in the direction of the drilling, and transmits its motion by means of bevel gearing to a transverse shaft upon which we may slide by hand a pinion provided with pointed members, thus bringing it into gear engagement, according to the desired speed, with any one of the circular and concentric rows of holes in a disk which is connected with the member holding the chuck in such manner that it may be axially displaced to allow the change of position of the said pinion provided with the pointed members, whereby the speed of the apparatus may be suitably changed.
  • Fig. 1 is a vertical section of the drilling apparatus.
  • Fig. 2 is a vertical section on a plane perpendicular to the section shown in Fig. 1.
  • Fig. 3 is a half plan view of the frame alone.
  • Fig. 4 is a partial vertical section analogous to Fig. 2, relating to a modified construction.
  • the motor shaft 5 carries at the upper part the cooling flanges 6 and at its lower part the commutator 7 coacting with the brushes mounted on the support 8 which is interposed between the frame 2 and the main body of the machine 9, which has the form of an incompletely closed frame.
  • a bevel pinion 10 engaging a pinion 11 keyed to the shaft 12 whose section is not circular, and may have a square or like shape.
  • the shaft 12 is provided with journals No. 257,980, and in. France March 5, 1927.
  • the disc 15, which projects upon the opposite sides of the frame 9, is provided with an axle 16 which is bored in its center for the insertion of a spring 17 which acts on a. key 18 having the form represented in Fig. 1 and engaged in the diametrically opposite slots in the said axle and of the member 19 which carries the chuck 20 and surrounds the said axle.
  • the member 19 is mounted in a ball bearing which is fitted into the lower part of the frame 9 and is rotatable in a socket 21.
  • the sa d member is provided at the upper part with a cap 22 which is secured by two screws and against whose end the key 18 is urged by the spring 17 In this manner the rotation of the disk 15 is imparted to the chuckcarrymg member 19 through the medium of the axle 16 and of the key 18.
  • the pinion 14 being in the position herein represented, which corresponds to the slowest speed of the said chuck, if the operator desires to use another speed, he presses down the disk 15 in such manner that its axle 16 will descend in the bore of the member 19,
  • the disk 15 and the chuck 20 are mounted in combination on the same axle n3 rotatable in the ring 2a which may be raised or lowered with reference to the support 9.
  • connection between the said ring and the support may be effected as herein represcntedby screw thread, or by a bayonet device or like arrangement.
  • the disk 15 when the disk 15 is in the upper position, it engages the pinion 14: (not snown); when the disk is lowered by unscrewing the said ring, whose thread is contrary to the one screwing upon the chuck 20, the pinion l fmay be moved so as to change the speed.
  • the said drilling apparatusvis provided with two handles 23 which may be variously inclined with reference to the main body and may be held in any chosen position; said handles are pivoted to the member 8, but it is obvious that they might be pivotedto the frame 9.
  • This latter preferably consists of pressed steel, and it is properly centered on the intermediate member 8, but it is evident that this centering can be dispensed with and themain body can be upwardly extended so as to form a sort of closed frame carrying the motor.
  • the transverse shaft 12, and the chuck-holding member preferably consists of pressed steel, and it is properly centered on the intermediate member 8, but it is evident that this centering can be dispensed with and themain body can be upwardly extended so as to form a sort of closed frame carrying the motor.
  • an electric breast drill the combination of a frame having at one end a seat adapted to receive an electric motor and at the oppo site end a socket, the axis .ofwhich is in line with the axis of the electric ;motor. a pinion secured to the shaft 'of. the electric motor, a transverse shaft journaled: in the frame a bevel gear secured to this shaft on one side of the axis of the said socket, and adapted to be engaged by said pinion of the electric motor a pinion-wvith pointed teeth slidableonqthe said shaft on the opposite side relatively to the said axis.
  • the said bea ring and'the said socket having threaded parts adapted tobe screwed together, a tool-holdingshaft and a disc securedtot-his tool-holding shaft and provided with several rows of holes-adapted to engage the pointed teeth-,;t;hesaid-toolholding ishaft being-journaledgin the said hearing so as to rotate but not to slide inthe axial direction relatively to theisume.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US257980A 1927-03-05 1928-02-29 Electric drilling apparatus Expired - Lifetime US1768119A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR493234X 1927-03-05

Publications (1)

Publication Number Publication Date
US1768119A true US1768119A (en) 1930-06-24

Family

ID=8904615

Family Applications (1)

Application Number Title Priority Date Filing Date
US257980A Expired - Lifetime US1768119A (en) 1927-03-05 1928-02-29 Electric drilling apparatus

Country Status (5)

Country Link
US (1) US1768119A (enrdf_load_stackoverflow)
BE (1) BE349096A (enrdf_load_stackoverflow)
DE (1) DE493234C (enrdf_load_stackoverflow)
FR (1) FR630343A (enrdf_load_stackoverflow)
GB (1) GB286600A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418766A (en) * 1979-07-25 1983-12-06 Black & Decker Inc. Compact multi-speed hammer-drill
CN104668657A (zh) * 2013-12-02 2015-06-03 苏州宝时得电动工具有限公司 一种手持切割机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418766A (en) * 1979-07-25 1983-12-06 Black & Decker Inc. Compact multi-speed hammer-drill
CN104668657A (zh) * 2013-12-02 2015-06-03 苏州宝时得电动工具有限公司 一种手持切割机

Also Published As

Publication number Publication date
DE493234C (de) 1930-03-06
BE349096A (enrdf_load_stackoverflow)
FR630343A (fr) 1927-12-01
GB286600A (en) 1928-06-07

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