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US1990035A - Portable electrical tool - Google Patents

Portable electrical tool Download PDF

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Publication number
US1990035A
US1990035A US603133A US60313332A US1990035A US 1990035 A US1990035 A US 1990035A US 603133 A US603133 A US 603133A US 60313332 A US60313332 A US 60313332A US 1990035 A US1990035 A US 1990035A
Authority
US
United States
Prior art keywords
motor
spindle
casing
tool
handle
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
US603133A
Other languages
English (en)
Inventor
Kratz Franz
Baumgratz Ernst
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.)
Robert Bosch AG
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Application granted granted Critical
Publication of US1990035A publication Critical patent/US1990035A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
    • B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • H02K7/145—Hand-held machine tool
    • 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
    • Y10T29/00—Metal working
    • Y10T29/44—Filing
    • 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
    • Y10T74/21—Elements
    • Y10T74/2186—Gear casings

Definitions

  • the present invention relates to electrically needle roller-bearings 13 and carries a removdriven hand directed machines and more parable small grinding disc 14. On the rear side ticularly to an electrically driven hand grinding oi the extension '7 is fastened a handle 15, in machine.
  • the handle is thus secured or directly connected tools is limited.
  • the electric hand-motor grinding-machines point closely adjacent one end of the tool spindle hitherto generally used are indeed provided at and (IO- with e axis thereof w y the 5 one part with gearing by whi h in a k wn distance between the working end of the tool construction the speed of the tool spindle is spindle and the point where t e d of the brought up to about.12,500 revolutions per minp holds the ach (the handle) is reute.
  • the object of the invention is to produce a ehine- In the bottom of the p holes '19 2: small electrical machine which is equal to the are Provided, and in the twO a -b ackets compressed air tool in ma i ul tion d capac- 2 and 3 are passages 20, which enable the motor ity.
  • the .motor, 1 to b sufficiently Cooled y t a drawn in whilst being ofsmall diameter and weight, which by the fan e p 17 has t ll 21 Surenables it to be conveniently held with one hand, rounding the holder
  • the from the a 30 has a high speed when running u de no b d 6 emerging from the tube 21 cools the tool spindle of about 8,000-12,000 revolutions per minute, and 9, a the e time blows away t dust is so geared to the tool spindle that this latter which arises n grindinghas a speed of 30,000 to 50,000 and more revolu-
  • the motor has a speed When running w t ut A u l tri hand motor 1 of t usual load of about 10,000-l2,000 revolutions per min- 5 cylindrical construction has a diameter of about lite, which is increased by the belt gearing t 4" 5 cm. and a length of about 8.5 cm.
  • the motor about 40,000 to 50,000 revolutions D minuteshaft 4, mounted in the two bearing brackets Consequently, even when using small d g 2-and 3, carries a belt pulley 5, which is condiscs, 3 suflioiently high peripheral p ed can t t so as t t t, t Same time also as be attained for instance of 20 metres per second. a fan disc 6.
  • the bearing bracket 2 has on its g g g r g fim t 5 lower side an extension '7, in which is secured er 9 .1ame r w w a a holder or bearing sleeve or bracket 8 for a gg'gg i igf Instance m the mtental gnndmg of tool p dl 9 y m n f s p-n 0 and As will be seen from the drawing, the handle an ad ustlng screw 11.
  • the motor is of low weight, so'that the weight of the complete machineincluding theconducting cable isconsiderablybelow 1,000grams.
  • the machine is therefore easy to handle.
  • the motor can be easily connected by a cable to the electric lighting mains existing in any workshop. This cable is considerably lighter and more portable than the air-pipe which is necessary in known compressed air tools.
  • the machine can also be fastened by a supporting yoke-or the like on the slide-rest of a lathe, or other alterations may be made.
  • a belt pulley drive can be provided at both ends of the motor shaft, and correspondingly the tool spindle is then fitted with two belt
  • the grinding disc instead of the grinding disc other tools can be secured in the spindle 9.
  • one end of the motor shaft can be constructed as-a holder for a milling cutter, drill or other tool which does not requirev such a high speed of rotation.
  • An electrically driven hand directed machine comprising a casing, an electric motor mounted in said casing, a spindle, a housing for said spindle adjustably secured to said casing, a pulley on the shaft of said motor, a pulley on said spindle, a belt connecting said pulleys, and means to secure said housing in the adjusted position to maintain the correct tension on said belt.
  • An electrically driven hand directed machine comprising a casing, an electric motor mounted in said casing, a tool spindle, a housing for said spindle, means for adjustably securing said housing to, said casing, needle roller bearing means supporting said spindle in said housing, a belt pulley connected to said motor constructed to operate as a flywheel and fan simultaneously, abelt pulley on said spindle, a belt connecting said pulleys, and a cover enclosing said pulley and said spindle housing to direct a blast of air upon said tool spindle.
  • a portable electrically driven machine for performing grinding and similar operations at high speed and which is light enough and small enough to be supported and operated by one hand,
  • said machine comprising a casing, an electric motor mounted in said casing and at one side thereof to rotate at 8,000 to 10,000 revolutions per minute when runing light, a tool spindle rotatably mounted in said casing at the other side thereof, gear transmission means connecting said motor to said spindle to rotate said spindle at 30,000 to 50,000 revolutions per minute when running light, and a handle secured to said casing at'a point colinear with the axis of said spindle and alongside of said motor.
  • a portable electrically driven machine for performing grinding and similar operations at high speed and which is light enough and small enough to be supported and operated by one hand, said machine comprising a casing, an electric motor mounted in said casing and at one side thereof to rotate at 8,000 to 10,000 revolutions per minute when runninglight, a tool spindle rotatably mountedin said casing at the other side thereof, and transmission means in said casa driving belt connecting said pulleys'to rotate I said spindle at 30,000 to 50,000 revolutions per minute, and a handle secured to said casing and alongside of said motor at a point closely adjacent one end of said spindle and co-linear with the axis thereof.
  • a portable electrically driven machine for performing grinding and similar operations at high speed comprising a casing, an electric motor mounted in said casing, a tool spindle mounted in said casing and along side of said motor, means in said casing connecting said tool spindle at a point closely adjacent one end of said tool spindle and co-linear with the axis thereof.
  • An electrically-driven hand directed machine comprising a mounting, a tool spindle rotatably mounted therein, a handle secured to said mounting closelyadjacent one end of saidtool spindle and in alinement with the axis thereof, an electric motor mounted in said mounting alongside of said tool spindle and'handle, and gear means connecting said motor and said tool spindle.
  • a portable electrically driven machine for performing grinding and similar operations at high'speed comprising a tool spindle, mounting means including a handle for rotatably mounting cent .one end of said tool spindle and in alinement with the axis thereof, and an electric motor for rotating said tool spindle, said motor being secured to said mounting means at one side of and out of alinement with the axis ,of said 11.
  • An electrically driven hand directed ma-- chine comprising a casing, an electric motor '25 to said motor, and a handle secured to said casing said tool spindle, said handle being closely adja-'- mounted therein, a motor bearing bracket provided with a lateral extension, a tool spindle, a bearing sleeve for said spindle secured to the exten:
  • a portable electrically driven machine for performing grinding and similar operations at high speed comprising a casing, an electric mo said casing, a motor in said casing. a spindle driven by said motor and extending along said bearing sleeve, a cooling fan driven by said motor,
  • An electrically driven portable tool com-- prising a casing, a bearing sleeve extending from said casing, a motor in said casing, a spindle 1o driven by said motor and extending along the bearing sleeve, an enclosing member arranged around and spaced from the bearing sleeve so as to form an air e, and a cooling fan driven by the motor and adapted to draw air through the motor and to discharge the same through the passage formed between said member and said sleeve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Gripping On Spindles (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Drilling And Boring (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US603133A 1931-07-27 1932-04-04 Portable electrical tool Expired - Lifetime US1990035A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE163074X 1931-07-27
DE167058X 1932-01-25

Publications (1)

Publication Number Publication Date
US1990035A true US1990035A (en) 1935-02-05

Family

ID=33553277

Family Applications (1)

Application Number Title Priority Date Filing Date
US603133A Expired - Lifetime US1990035A (en) 1931-07-27 1932-04-04 Portable electrical tool

Country Status (5)

Country Link
US (1) US1990035A (de)
AT (2) AT135972B (de)
CH (2) CH163074A (de)
FR (1) FR738754A (de)
GB (2) GB384511A (de)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517882A (en) * 1947-08-11 1950-08-08 Johnson Moses Illuminated hand held motor tool
DE884300C (de) * 1940-12-13 1953-07-27 Karl Hack Federendenschleifmaschine
US2700115A (en) * 1950-10-10 1955-01-18 Walt Inc De Air-cooled electric motor
US3244031A (en) * 1961-10-31 1966-04-05 Rockwell Mfg Co Power tool improvements
US3368090A (en) * 1965-05-28 1968-02-06 Chicago Wheel & Mfg Co Portable motor driven power tool
US3718193A (en) * 1971-02-18 1973-02-27 Bosch Gmbh Robert Cooling system for portable impulse transmitting machines
US5083620A (en) * 1989-12-28 1992-01-28 Makita Electric Works, Ltd. Cordless power driven tool
US20040226731A1 (en) * 2002-02-08 2004-11-18 Heinz-Werner Faatz Drilling and/or hammering tool
US20060144603A1 (en) * 2004-12-23 2006-07-06 Klaus-Dieter Arich Power tool housing
US20060144602A1 (en) * 2004-12-23 2006-07-06 Klaus-Dieter Arich Power tool cooling
EP2066472A2 (de) * 2006-10-06 2009-06-10 Black & Decker, Inc. Balkenbohrer
US20110203821A1 (en) * 2010-01-07 2011-08-25 Black & Decker Inc. Power screwdriver having rotary input control
US8418778B2 (en) 2010-01-07 2013-04-16 Black & Decker Inc. Power screwdriver having rotary input control
USRE44311E1 (en) 2004-10-20 2013-06-25 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
USD703017S1 (en) 2011-01-07 2014-04-22 Black & Decker Inc. Screwdriver
US20150014013A1 (en) * 2011-12-23 2015-01-15 Robert Bosch Gmbh Electrically Operable Machine Tool
US9266178B2 (en) 2010-01-07 2016-02-23 Black & Decker Inc. Power tool having rotary input control
US9475180B2 (en) 2010-01-07 2016-10-25 Black & Decker Inc. Power tool having rotary input control
US9505119B2 (en) * 2015-02-19 2016-11-29 X'pole Precision Tools Inc. Electric handheld sanding tool providing improved cooling efficiency
US10589413B2 (en) 2016-06-20 2020-03-17 Black & Decker Inc. Power tool with anti-kickback control system
US11059139B2 (en) 2016-10-04 2021-07-13 Wto Vermoegensverwaltung Gmbh Drilling-milling device having a device for evening out the torque and the rotational speed of the spindle
US11375610B2 (en) * 2019-11-21 2022-06-28 Milwaukee Electric Tool Corporation Insertable wireless communication device for a power tool
US11665519B2 (en) 2019-02-06 2023-05-30 Milwaukee Electric Tool Corporation Power tool with shared terminal block
US11869288B2 (en) 2017-08-07 2024-01-09 Milwaukee Electric Tool Corporation Power tool with compartment for receiving another device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436540A (en) * 1944-08-31 1948-02-24 Casco Products Corp Hand-held power tool
DE1016153B (de) * 1954-10-30 1957-09-19 Duss Maschf Elektro-Handschleifgeraet mit Luefterrad
DE1214818B (de) * 1963-04-19 1966-04-21 Helmut Bock Dr Verfahren zur Raffination von Fetten und OElen
US8628380B2 (en) * 2009-07-14 2014-01-14 Tai-Her Yang Direct motor-drive portable angle grinder
CN107584383B (zh) * 2017-10-20 2019-08-23 蔡雅婷 一种输电线路手持式电力铁塔角钢打磨机
CN112207912B (zh) * 2020-09-24 2021-11-12 中南林业科技大学 一种人造木质纤维板自动化切割机

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE884300C (de) * 1940-12-13 1953-07-27 Karl Hack Federendenschleifmaschine
US2517882A (en) * 1947-08-11 1950-08-08 Johnson Moses Illuminated hand held motor tool
US2700115A (en) * 1950-10-10 1955-01-18 Walt Inc De Air-cooled electric motor
US3244031A (en) * 1961-10-31 1966-04-05 Rockwell Mfg Co Power tool improvements
US3368090A (en) * 1965-05-28 1968-02-06 Chicago Wheel & Mfg Co Portable motor driven power tool
US3718193A (en) * 1971-02-18 1973-02-27 Bosch Gmbh Robert Cooling system for portable impulse transmitting machines
US5083620A (en) * 1989-12-28 1992-01-28 Makita Electric Works, Ltd. Cordless power driven tool
US7308950B2 (en) 2002-02-08 2007-12-18 Black & Decker Inc. Drilling and/or hammering tool
US20040226731A1 (en) * 2002-02-08 2004-11-18 Heinz-Werner Faatz Drilling and/or hammering tool
USRE44993E1 (en) 2004-10-20 2014-07-08 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
USRE44311E1 (en) 2004-10-20 2013-06-25 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
USRE45112E1 (en) 2004-10-20 2014-09-09 Black & Decker Inc. Power tool anti-kickback system with rotational rate sensor
US7331408B2 (en) 2004-12-23 2008-02-19 Black & Decker Inc. Power tool housing
US7705497B2 (en) 2004-12-23 2010-04-27 Black & Decker Inc. Power tool cooling
US20060144602A1 (en) * 2004-12-23 2006-07-06 Klaus-Dieter Arich Power tool cooling
US20060144603A1 (en) * 2004-12-23 2006-07-06 Klaus-Dieter Arich Power tool housing
EP2066472A2 (de) * 2006-10-06 2009-06-10 Black & Decker, Inc. Balkenbohrer
EP2066472A4 (de) * 2006-10-06 2011-02-02 Black & Decker Inc Balkenbohrer
US9211636B2 (en) 2010-01-07 2015-12-15 Black & Decker Inc. Power tool having rotary input control
US10160049B2 (en) 2010-01-07 2018-12-25 Black & Decker Inc. Power tool having rotary input control
US8418778B2 (en) 2010-01-07 2013-04-16 Black & Decker Inc. Power screwdriver having rotary input control
US8286723B2 (en) 2010-01-07 2012-10-16 Black & Decker Inc. Power screwdriver having rotary input control
US9199362B2 (en) 2010-01-07 2015-12-01 Black & Decker Inc. Power tool having rotary input control
US20110203821A1 (en) * 2010-01-07 2011-08-25 Black & Decker Inc. Power screwdriver having rotary input control
US9266178B2 (en) 2010-01-07 2016-02-23 Black & Decker Inc. Power tool having rotary input control
US9321155B2 (en) 2010-01-07 2016-04-26 Black & Decker Inc. Power tool having switch and rotary input control
US9321156B2 (en) 2010-01-07 2016-04-26 Black & Decker Inc. Power tool having rotary input control
US9475180B2 (en) 2010-01-07 2016-10-25 Black & Decker Inc. Power tool having rotary input control
USD703017S1 (en) 2011-01-07 2014-04-22 Black & Decker Inc. Screwdriver
US20150014013A1 (en) * 2011-12-23 2015-01-15 Robert Bosch Gmbh Electrically Operable Machine Tool
US9505119B2 (en) * 2015-02-19 2016-11-29 X'pole Precision Tools Inc. Electric handheld sanding tool providing improved cooling efficiency
US10589413B2 (en) 2016-06-20 2020-03-17 Black & Decker Inc. Power tool with anti-kickback control system
US11192232B2 (en) 2016-06-20 2021-12-07 Black & Decker Inc. Power tool with anti-kickback control system
US11059139B2 (en) 2016-10-04 2021-07-13 Wto Vermoegensverwaltung Gmbh Drilling-milling device having a device for evening out the torque and the rotational speed of the spindle
US11869288B2 (en) 2017-08-07 2024-01-09 Milwaukee Electric Tool Corporation Power tool with compartment for receiving another device
US11665519B2 (en) 2019-02-06 2023-05-30 Milwaukee Electric Tool Corporation Power tool with shared terminal block
US11963079B2 (en) 2019-02-06 2024-04-16 Milwaukee Electric Tool Corporation Power tool with shared terminal block
US11375610B2 (en) * 2019-11-21 2022-06-28 Milwaukee Electric Tool Corporation Insertable wireless communication device for a power tool
US11570888B2 (en) 2019-11-21 2023-01-31 Milwaukee Electric Tool Corporation Insertable wireless communication device for a power tool
US11871509B2 (en) 2019-11-21 2024-01-09 Milwaukee Electric Tool Corporation Insertable wireless communication device for a power tool
US12133324B2 (en) 2019-11-21 2024-10-29 Milwaukee Electric Tool Corporation Insertable wireless communication device for a power tool

Also Published As

Publication number Publication date
GB384511A (en) 1932-12-08
CH167058A (de) 1934-01-31
GB387982A (en) 1933-02-16
AT138350B (de) 1934-07-25
FR738754A (fr) 1932-12-29
AT135972B (de) 1933-12-27
CH163074A (de) 1933-07-31

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