GB810183A - Lead sharpening machine - Google Patents

Lead sharpening machine

Info

Publication number
GB810183A
GB810183A GB21634/57A GB2163457A GB810183A GB 810183 A GB810183 A GB 810183A GB 21634/57 A GB21634/57 A GB 21634/57A GB 2163457 A GB2163457 A GB 2163457A GB 810183 A GB810183 A GB 810183A
Authority
GB
United Kingdom
Prior art keywords
lead
cutter
channel
parts
holder
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
GB21634/57A
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
Publication of GB810183A publication Critical patent/GB810183A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43LARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L23/00Sharpeners for pencils or leads
    • B43L23/02Sharpeners for pencils or leads with gearing

Landscapes

  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Drawing Aids And Blackboards (AREA)

Abstract

810,183. Pencil sharpeners. DAHLE, W., [trading as DAHLE, W. [Firm of]]. July 8, 1957 [July 10, 1956], No. 21634/57. Class 146(3) A machine for sharppening pencil leads in adjustable lead holders has a housing consisting of two parts 1, 2 rotatable in relation to each other wherein the part 2 has a channel 6 in an eccentric position into which a lead 8 may be inserted and a milling cutter 3 laterally adjacent to the inner end of said channel and driven, when the parts are relatively rotated, by gearing comprising one internally toothed gear wheel 11 secured to the part 1 and another gear wheel 9 secured to the cutter. The parts 1, 2 are fastened together by a bolt 13 passing through tubular portions formed centrally on the inner sides of parts 1, 2 respectively and engaged by a nut where it projects beyond the part 2. The cutter 3 is rotatably mounted on a bolt 5 carried by an inner extension 4 of the housing part 2 in which the channel 6 is also formed, the axis of the cutter being inclined at an angle to the axis of the channel. The lead holder is inserted in a tubular extension 7 of the channel 6 so that the lead engages the cutter, and the holder is used as a crank to rotate the part 2 of the housing in relation to the part 1, the gearing 9, 11 causing the cutter to rotate and sharpen the lead. To accommodate lead holders of different diameters adapters such as 26 may'be fitted on the tubular extension 7. Sockets 19, 20 are formed in the part 2 to ensure that the correct amount of lead is exposed from the lead holder before the sharpening operation: the lead holder is rested on the outer edge of a socket and the lead is fed downwards e.g. by depression on the feed knob, until it engages the bottom of the socket. Apertures 23 are provided in the part 1 for inserting clamps to secure the machine to a table. Alternatively or additionally a sheet 24 of material such as rubber, having a high coefficient of friction may be fastened to the underside of the part 1 to keep that part stationary on the table. In a modification the machine may be secured to a heavy base which has a sheet similar to 24 on its underside, and in place of the sockets 19, 20 suitable grooves may be provided on the outside of the tubular extension 7.
GB21634/57A 1956-07-10 1957-07-08 Lead sharpening machine Expired GB810183A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED23322A DE1006311B (en) 1956-07-10 1956-07-10 Sharpening machine with a sharpener housing formed from two mutually rotatable parts

Publications (1)

Publication Number Publication Date
GB810183A true GB810183A (en) 1959-03-11

Family

ID=7037778

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21634/57A Expired GB810183A (en) 1956-07-10 1957-07-08 Lead sharpening machine

Country Status (3)

Country Link
US (1) US2991757A (en)
DE (1) DE1006311B (en)
GB (1) GB810183A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090358A (en) * 1961-07-27 1963-05-21 Robert S Condon Sharpening device for pencil leads

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1272173B (en) * 1962-08-08 1968-07-04 Ardis S P A Lead sharpener for conical sharpening of pencil leads held in a lead holder
US3289641A (en) * 1966-04-29 1966-12-06 Royal London Ltd Pencil sharpener
US4879844A (en) * 1987-07-15 1989-11-14 Giles John E Apparatus and methods for sharpening points
US7004032B2 (en) * 2003-08-08 2006-02-28 Taiwan Semiconductor Manufacturing Company Pressure gauge measuring multiple pressure values
US7546858B2 (en) * 2005-06-22 2009-06-16 Acme United Corporation Pencil sharpener

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE18205C (en) * C. A. MAYRHOFER in Paris Hydraulic air compressor with pneumatic self-reversing
US530018A (en) * 1894-11-27 Richard d
GB189712218A (en) * 1897-05-17 1897-07-03 John Lee Love Improvements in Pencil Sharpeners.
US831753A (en) * 1905-09-29 1906-09-25 Frank J Stutesman Pencil-sharpener.
US1038112A (en) * 1911-10-25 1912-09-10 Frederick A Fricker Pencil-sharpener.
DE257510C (en) * 1912-01-29
US2540320A (en) * 1949-03-22 1951-02-06 Edward L Cayo Pencil pointer
US2615426A (en) * 1950-06-05 1952-10-28 Gilbert N Fryer Pencil sharpener
US2618240A (en) * 1951-05-23 1952-11-18 Charles F Haase Lead sharpener for draftsmen's pencils
US2785657A (en) * 1953-05-22 1957-03-19 Wolfson Walter Adjustable pencil sharpener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090358A (en) * 1961-07-27 1963-05-21 Robert S Condon Sharpening device for pencil leads

Also Published As

Publication number Publication date
US2991757A (en) 1961-07-11
DE1006311B (en) 1957-04-11

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