GB188762A - Improvements in or relating to pencil-sharpening apparatus - Google Patents

Improvements in or relating to pencil-sharpening apparatus

Info

Publication number
GB188762A
GB188762A GB21657/21A GB2165721A GB188762A GB 188762 A GB188762 A GB 188762A GB 21657/21 A GB21657/21 A GB 21657/21A GB 2165721 A GB2165721 A GB 2165721A GB 188762 A GB188762 A GB 188762A
Authority
GB
United Kingdom
Prior art keywords
pencil
spindle
cams
block
plate
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
GB21657/21A
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
Priority to FR538516D priority Critical patent/FR538516A/en
Application filed by Individual filed Critical Individual
Priority to GB21657/21A priority patent/GB188762A/en
Publication of GB188762A publication Critical patent/GB188762A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L23/00—Sharpeners for pencils or leads
    • B43L23/008—Sharpeners for pencils or leads with rotating cutting bodies

Abstract

188,762. Dandrieux, A. Aug. 15, 1921. Pencil - sharpeners.- Relates to pencil-sharpeners of the kind in which a plate bearing radial blades is revoluble about a normal axis not intersecting the axis of the pencil, and comprises a device for centring and rotating the pencil driven continuously from the plate-spindle by means of special gear ing. Preferably, the plate 1 formed with blades 2 is mounted on an inclined spindle 4 revoluble in a block 10 and provided with a handle 17. The plate engages flats on the spindle and is urged towards the block by means of a spring 8. For receiving the pencil, the block is formed with a vertical hole arranged at one side of the spindle and terminating at the bottom in a conical hole having a lateral opening over which pass the blades. The spindle 4 is provided with a gearwheel 11 meshing with a gear-wheel 20 on the casing 31, Fig. 3, of the pencil-centring device, arranged at the top of the vertical hole in the block. The wheel 11 has a peripheral flange formed with one or more cams 11<a>, each of gradually increasing radius, and the wheel 20 is formed with teeth tangential to the cams. The pitch of the teeth is equal to the difference between the extreme radii of the cams, and a gap equal to the thickness of the teeth is left between the cams. The cams may be formed as arcs of circles struck from the corners of an equilateral triangle or polygon having its centre on the axis of the spindle 4. When the wheel 11 is formed with a single cam, a curve such as a logarithmic spiral may be employed. The pencil-centring device consists of rollers 21, Fig. 3, mounted on finger-levers 26 which are pivoted at 27 to a frame 29 secured to the casing 31. The rollers consist of double cones formed with circumferential ridges. The rollers are urged together by means of springs 27a, links 23 maintaining the rollers equidistant from the axis of the device. The pencil-point is adjusted by means of a slide which can be set to place either of two steps therein position for engaging the point. The slide passes through an opening 39, Fig. 2, and is formed with a finger-piece. Debris can be removed from the conical hole in the block 10 by vibrating the slide. The apparatus shown in Fig. 2, is enclosed in a casing which may be provided. over the plate 1, with a window. A drawer fits in the space 14<x>.
GB21657/21A 1921-07-20 1921-08-15 Improvements in or relating to pencil-sharpening apparatus Expired GB188762A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR538516D FR538516A (en) 1921-07-20 1921-07-20 Pencil sharpening machine
GB21657/21A GB188762A (en) 1921-07-20 1921-08-15 Improvements in or relating to pencil-sharpening apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR538516T 1921-07-20
GB21657/21A GB188762A (en) 1921-07-20 1921-08-15 Improvements in or relating to pencil-sharpening apparatus

Publications (1)

Publication Number Publication Date
GB188762A true GB188762A (en) 1922-11-15

Family

ID=10166605

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21657/21A Expired GB188762A (en) 1921-07-20 1921-08-15 Improvements in or relating to pencil-sharpening apparatus

Country Status (2)

Country Link
FR (1) FR538516A (en)
GB (1) GB188762A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078512A1 (en) * 1981-10-29 1983-05-11 Hiroo Hayashi Pencil sharpener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0078512A1 (en) * 1981-10-29 1983-05-11 Hiroo Hayashi Pencil sharpener

Also Published As

Publication number Publication date
FR538516A (en) 1922-06-10

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