GB675449A - Improvements in and relating to power-driven reciprocatory hand tools - Google Patents

Improvements in and relating to power-driven reciprocatory hand tools

Info

Publication number
GB675449A
GB675449A GB20735/50A GB2073550A GB675449A GB 675449 A GB675449 A GB 675449A GB 20735/50 A GB20735/50 A GB 20735/50A GB 2073550 A GB2073550 A GB 2073550A GB 675449 A GB675449 A GB 675449A
Authority
GB
United Kingdom
Prior art keywords
tool
pin
crank
rod
crank mechanism
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
GB20735/50A
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.)
Dentatus AB
Original Assignee
Dentatus AB
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 Dentatus AB filed Critical Dentatus AB
Publication of GB675449A publication Critical patent/GB675449A/en
Expired legal-status Critical Current

Links

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
    • B24B23/04—Portable grinding machines, e.g. hand-guided; Accessories therefor with oscillating grinding tools; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D67/00—Filing or rasping machines or devices
    • 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
    • Y10T74/18—Mechanical movements
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18208—Crank, pitman, and slide
    • 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
    • Y10T74/2142—Pitmans and connecting rods
    • Y10T74/2144—Yieldable
    • Y10T74/2146—Longitudinal springs
    • 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
    • Y10T74/2173—Cranks and wrist pins
    • Y10T74/2179—Adjustable
    • 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
    • Y10T74/2173—Cranks and wrist pins
    • Y10T74/2183—Counterbalanced

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

675,449. Reciprocatory filing. AKTIEBOLAGET DENTATUS. Aug. 22, 1950 [Aug. 23, 1949], No. 20735/50. Class 83 (iii). [Also in Groups XXIII and XXIV] A reciprocatory hand tool has a holder 13 for a file or grinding-block driven by a crank mechanism in which the length of stroke can be varied by adjusting the eccentricity of the crank-pin 8, balancing means being automatically adjusted at the same time so that the crank mechanism remains balanced. The balancing means may be a counterweight mounted in or on the rotating part of the crank mechanism or an eccentric flywheel. A shaft 5 is driven by a flexible shaft &c. and carries an eccentrically-mounted member 6 in which is journalled the crank-pin 8. The connecting-rod 12 is secured to the crank-pin andjoinedtothe tool-holder 13 by a ball and socket joint 21 so that the holder is reciprocated in a bush 14 but is free to adjust itself about its own axis in order that the tool secured in a socket 22 may adjust itself into the working plane. A spring 23 allows the tool to retract, if it should meet undue resistance. An enlarged bore 10 is formed in the member 6 and, as it is of such dimensions that the weight removed equals the weight of the rotating parts of the crank mechanism, the member 6 forms an eccentric mass which, adjusted to any angular position to vary the crank-pin eccentricity, always balances the rotating parts of the crank mechanism. The member 6 extends to the edge of the shaft on one side, to facilitate its adjustment, and is locked by a screw 7. If the tool is required to work in any particular angular setting, a collar 26 having a slot 27 to engage the tool-clamping screw boss 28 can be displaced along the bush 14 and locked by a screw 29. In the modification shown in Fig. 3, an additional circular motion is given to a tool such as a grinding-block 33 which is universally mounted on a rod 32 pivoted on the tool-clamping screw 25 and oscillated by an additional journal-pin 31 on the crank-pin. The inner end of the rod 32 may be connected to the pin 31 by a bearing, as shown, or by a slot, in which case the rod is clamped to the screw 25 and the tool can then retract against the spring 23 if undue resistance is met. The cap 16 can be turned through 180 degrees to align holes 17 and 37 with the appropriate connecting-rods and the enlarged bore 10 can be filled with oil to lubricate the crank-pin through holes 30.
GB20735/50A 1949-08-23 1950-08-22 Improvements in and relating to power-driven reciprocatory hand tools Expired GB675449A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE675449X 1949-08-23
SE2690081X 1949-08-23

Publications (1)

Publication Number Publication Date
GB675449A true GB675449A (en) 1952-07-09

Family

ID=26656312

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20735/50A Expired GB675449A (en) 1949-08-23 1950-08-22 Improvements in and relating to power-driven reciprocatory hand tools

Country Status (2)

Country Link
US (1) US2690081A (en)
GB (1) GB675449A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2029542A (en) * 1978-08-24 1980-03-19 Rau Swf Autozubehoer Power transmitting coupling for windscreen wipers
GB2137302A (en) * 1983-03-25 1984-10-03 Vending Machines Overload mechanism
CN110778857A (en) * 2018-07-27 2020-02-11 和硕联合科技股份有限公司 Lifting assembly

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2946503A (en) * 1957-05-22 1960-07-26 Gen Motors Corp Air compressor
SE424710B (en) * 1977-09-14 1982-08-09 Dentatus Ab CRAFTS TOOL WITH A FRONT AND RETURN PART INTENDED TO PREPARE A WORKING TOOL
US4512207A (en) * 1981-09-24 1985-04-23 Dancsik Josef J Reciprocating mechanism
DE3233386C2 (en) * 1981-09-24 1986-05-22 Josef Janos Mt. Clemens Mich. Dancsik Hand grinder with tool moved back and forth in a straight line
DE3336381C2 (en) * 1983-10-06 1986-07-03 Mümin 7128 Lauffen Öszüt Processing machine for the surface treatment of workpieces with a mass balancing device
DE3702937A1 (en) * 1987-01-31 1988-08-11 Eoc Normalien Gmbh & Co Kg Method for polishing and polishing device
US5212995A (en) * 1991-12-10 1993-05-25 Robinson Melvin E Profiler device
DE4236414C1 (en) * 1992-10-28 1994-03-31 Eoc Normalien Gmbh & Co Kg Polishing machine with central driving shaft - produces through eccentric pulleys and crank linkage an elliptical motion of polishing tool with superimposed oscillation giving overlapping paths
US5609515A (en) * 1994-11-23 1997-03-11 Takach; Thomas G. Hand-held reciprocating device with an improved tool guide system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US811426A (en) * 1905-05-15 1906-01-30 Arthur C Moulton Adjustable crank-disk.
US1813087A (en) * 1926-01-28 1931-07-07 Jacob R Sandage Impact tool
US2274448A (en) * 1940-06-24 1942-02-24 H And H Res Company Motor driven hand tool
US2331760A (en) * 1942-03-12 1943-10-12 Joseph Pentony Electric drilling, calking, chipping, and riveting tool
US2503907A (en) * 1945-07-04 1950-04-11 John R Hefler Mechanism for converting rotary motion to linear reciprocating motion
US2526976A (en) * 1946-07-12 1950-10-24 Duke Lanfre M Power-operated hand tool
US2561344A (en) * 1948-12-17 1951-07-24 United Shoe Machinery Corp Variable displacement drive
US2524207A (en) * 1948-12-29 1950-10-03 Int Harvester Co Large diameter crankshaft for motor compressors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2029542A (en) * 1978-08-24 1980-03-19 Rau Swf Autozubehoer Power transmitting coupling for windscreen wipers
GB2029542B (en) * 1978-08-24 1982-11-24 Swf Spezialfabrik Fuer Autozubehor Gustav Rau Gmbh Power transmitting coupling for windscreen wipers
GB2137302A (en) * 1983-03-25 1984-10-03 Vending Machines Overload mechanism
CN110778857A (en) * 2018-07-27 2020-02-11 和硕联合科技股份有限公司 Lifting assembly

Also Published As

Publication number Publication date
US2690081A (en) 1954-09-28

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