US1708128A - Device for sharpening pencils - Google Patents

Device for sharpening pencils Download PDF

Info

Publication number
US1708128A
US1708128A US208569A US20856927A US1708128A US 1708128 A US1708128 A US 1708128A US 208569 A US208569 A US 208569A US 20856927 A US20856927 A US 20856927A US 1708128 A US1708128 A US 1708128A
Authority
US
United States
Prior art keywords
plate
blade
sleeve
slot
cutting
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
US208569A
Other languages
English (en)
Inventor
Friedezky 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.)
Firm Rasierklingenfabrik "rivo" Hahn Richter & Volkmann
FIRM RASIERKLINGENFABRIK RIVO
Original Assignee
FIRM RASIERKLINGENFABRIK RIVO
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 FIRM RASIERKLINGENFABRIK RIVO filed Critical FIRM RASIERKLINGENFABRIK RIVO
Application granted granted Critical
Publication of US1708128A publication Critical patent/US1708128A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B43L23/08—Sharpeners for pencils or leads in which the pencils or leads are sharpened mainly by rotational movement against cutting blades

Definitions

  • This invention relates to improvements-in devices for sharpening pencils, in which aused safety razor blade is employed as a cutter, and it has for its object to provide means for supporting and holding the blade to se' cure an eilicient cutting action and to render possible the correct adjustment of the blades, which are not always of exactly the same size, and further to secure a firm clamping of the blade in position.
  • Figs. ⁇ 1 and 2 show in frontview and plan view respectively a pencil-Sharpener embodying my invention the tensioning plate being removed.
  • Fig. 3 illustrates in transverse section the Sharpener with the tensioning plate secured in position, the section being taken on line III-'III of Fig. 2.
  • Fig.4 is an inverted plan view of the tensioning plate
  • Fig. 5 is a transverse section through a portion of the Sharpener von an enlarged scale.
  • the bearing surface is arranged so as to dispose the outer face of the plate 3 outside of the tangential plane which passes through the ⁇ generatrix of the guidesleeve and above the cutting plane.
  • the two plates are connected with one another in such a manner by screws 5,- 5, passing through transverse slots 6 of the plate 2, that vthey can be moved withrespect toone another in the direction transverse to the sleeve.
  • the plate 3 is provided with two projections or raised parts 7 7', corresponding with the outer holes of a safety razor plate provided with three holes (Gillette type).
  • a blade placed upon the plate 3 is prevented from shifting with respect to the plate 3 in the direction of its adjustment, so that-the plate 3 and the blade form a unit.
  • the plate extends but slightly beyond the holes of the DEVICE FOR ySHAR'PENING- PENCIIS.
  • the tensioning plate is provided with a wedge-shaped extension 14, which bears upon the blade near its cutting edge and depresses the latter into the slot of the guide-sleeve, so that shavings or chippings are cut olf of the rotated pencil, the shavings passing out ot' the sleeve by way of its discharge slot.
  • the clamping of the blade whereby the latter is bent, effects an advantageous stiffening of the thin blade and its tensioning, as will be readily understood.
  • the arrangement is such, that, when the blade is correctly tensioned, the bottom face of the cutting kedge is disposed parallel with r'espect to the tangential plane passing through the generatrix of the sleeve-bore above the cutting edge.
  • the disposing of the plate 3 upon the plate 2 renders possible also the use of greatly worn blades, which have been rendei-ed irregular by frequent grinding. After sliding the blade against the bearing surfaces 9, the screws 5, 5 can be tightened, so that on applying the tensioning plate and fixing the same by means of the screws 13, the blade cannot be shifted in any way.
  • encil sharjener for use in connection with sa et razor lades providedwith two or more ho es, comprising a guide sleeve having a conlcal bore and a slot communicating therewith, an extension at one 'side of said sleeve and parallel with said slot, a bearing plate resting on the extension of the sleeve V and having a blade supporting surface lying outwardly beyond the tangential plane 'extending through the generatrix of the guide lying outwardly beyond the cutting plane,
  • bearing plate are provided with interengagin;r slots and proJeetions to permit adJustnient of the blade with relation to the slot.

Landscapes

  • Knives (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
US208569A 1927-03-31 1927-07-26 Device for sharpening pencils Expired - Lifetime US1708128A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT286954X 1927-03-31

Publications (1)

Publication Number Publication Date
US1708128A true US1708128A (en) 1929-04-09

Family

ID=3670859

Family Applications (1)

Application Number Title Priority Date Filing Date
US208569A Expired - Lifetime US1708128A (en) 1927-03-31 1927-07-26 Device for sharpening pencils

Country Status (7)

Country Link
US (1) US1708128A (fr)
BE (1) BE350128A (fr)
CH (1) CH129907A (fr)
DE (1) DE484726C (fr)
FR (1) FR636713A (fr)
GB (1) GB286954A (fr)
NL (1) NL21964C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2702022A (en) * 1951-10-09 1955-02-15 Carl I Fors Pencil sharpener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2702022A (en) * 1951-10-09 1955-02-15 Carl I Fors Pencil sharpener

Also Published As

Publication number Publication date
DE484726C (de) 1929-10-19
BE350128A (fr)
NL21964C (fr)
FR636713A (fr) 1928-04-16
GB286954A (en) 1928-03-15
CH129907A (de) 1929-01-02

Similar Documents

Publication Publication Date Title
US1100878A (en) Glass-cutter's board.
US2233497A (en) Envelope opener
US4066109A (en) Pencil sharpener with replaceable blades
US1708128A (en) Device for sharpening pencils
US1440649A (en) Plane
US2098159A (en) Cutting device
US2388695A (en) Letter opener
US3513548A (en) Extendible drafting compass
US591804A (en) Desk-ruler
US612120A (en) Paper-cutter
US510518A (en) Pencil-sharpener
US1801802A (en) Cutlery sharpener
GB422596A (en) An improved cutting tool for use with mill-board, wall-board and other like material
US1719714A (en) Pencil sharpener
US1281747A (en) Pencil-sharpener.
US1606802A (en) Glass cutter
US2158313A (en) Pick-off gauge
US56615A (en) Improvement in knife and scissors sharpeners
US2047439A (en) Scissors sharpener
US1154325A (en) Pencil-sharpener.
US1590031A (en) Cutting tool
US1645021A (en) Safety razor
US1087416A (en) Pencil-sharpener.
US402914A (en) Pencil-sharpener
US2819524A (en) Cutting device