US1780581A - Pencil having a sharpening device for the lead - Google Patents

Pencil having a sharpening device for the lead Download PDF

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Publication number
US1780581A
US1780581A US350653A US35065329A US1780581A US 1780581 A US1780581 A US 1780581A US 350653 A US350653 A US 350653A US 35065329 A US35065329 A US 35065329A US 1780581 A US1780581 A US 1780581A
Authority
US
United States
Prior art keywords
lead
casing
sharpening
conical
pencil
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
US350653A
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English (en)
Inventor
Alfred Dillier
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
Application granted granted Critical
Publication of US1780581A publication Critical patent/US1780581A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K29/00—Combinations of writing implements with other articles
    • B43K29/06—Combinations of writing implements with other articles with sharpening devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47H—FURNISHINGS FOR WINDOWS OR DOORS
    • A47H1/00—Curtain suspension devices
    • A47H1/04—Curtain rails

Definitions

  • sharpening devices which are housed in the rontpart of the Z0 pencil casingV andconsistof niovably arranged cutting or sharpening'blades, a spe- ⁇ i cial devicebeing provided to move these blades into ⁇ their ,operativev position.L ...In or-y der to move the lead rinto a position for 25 sharpening it is necessary to retract the saine from its position for. writing by screw means.
  • Figs. 7 and 8 show a further. embodiment of the invention inwriting and sharpening po.. j
  • Figwl is alsoa longitudinal sectionjshow- ⁇ Xviii inFliggtvlif ⁇ Y Refer-rin tothe drawings, .l denotes in all the embodiments ofthe :invention the out,- ⁇
  • l.-5 .e is: threadedly ⁇ connectedl te' a coupling member 3 which isadaptedto beppullediout ot the casing and moved intoan inclined position relatively to the l lead l, l pr thisfpur-k 9e lnig.
  • the inner side of the conical sleeve is provided with an abrading surface 9 which, as shown in Fig. 3, may have sharp indentations but, alternatively, this surfacemay also be coated with emery.
  • the abrading surface is preferably arranged to be exchangeable.
  • the supporting member 5 is further provided with an interior tubular extension 10 which on its frontv end carries an interior screw thread 11.
  • the lead holding tube 12 is guided which is Hattened on two opposite sides to non-rotatably hold the lead 4 of a corresponding cross-section.
  • the lead holding tube 12 in its front part is rotatably mounted in the tubular extension 100i the supporting'member 5 and in its rear part in an annular bearing member 13 which isconnected to the casing by a cross armed support 14.
  • Tothe rear end of the casing 1 a ferrule 15 is screwed in which a part 17 provided with milled surfaces 16 is rotatably mounted, andthe part 17 carries a square head 18 which engages in the lead holding tube 12.
  • the abrading surface trims a "sharp point onto the front portion of the lead.
  • the length of this point can be regulated at will, depending on the extent to which the lead is screwed out of the tubular guide 10. As ⁇ soon as ythe end portion of the tubular guidelO bears on the inner wall surfa-Ceof the guide member, the sharpening operation is ceased evenif the parts are further turned relatively to each other. i
  • abrading surface 9 is liXed to a cylindrical coupling member 3l which is adapted to be slid off the supporting member 5a rigidly ixed in the easing 1. If sharpening of the lead is required the parts 2a and 3iL are slid oli the supporting member 5a and moved to an inclined position relatively to the casing 1 on the front end of the conical part 19 of the supporting member 5a, as indicated in dotted lines.
  • the shoulder 20 formed by the dilerence in the diameters of the part 5a and the rear portionofthe part 19 serves as an abutment guide member for 3Z1 to bear on when the lead is being sharpened.
  • the conical front part or sleeve 2b provided with an abrading surface 9 is screwed to a cylindrical sleeve 3b and the latter is connected to a further cylindrical Asleeve member 22 by means of a coil spring 21.
  • the supporting member 5b is againV provided with a tubular eX tension 10b which is i'ormed with an external thread as at 23 and which serves as a stop for the sleeve member 22 when the latter together with the conical sleeve 2h is slid outward in the position for sharpening.
  • Fig. 9 shows a modified form of a lead holding. tube 12b thel one end portion orA which is open on one side as at 24 and which when inserted into the pencil ez;- tends alongside of the magazine 'i'or the leads.
  • each ico lead is equipped with a metal sleeve 4 (see Fig. 11) within which it is loosely contained.
  • the sleevey 4 together with the-lead 4 can 'ente-r'the lead holding tube12b, but -it is proportioned so, that 1t is prevented from Lzcircular cross-section or the like.
  • the rear iend of the coupling' member 3C is formedwith a hollow spherical portion 25 and guided in afcorrespondingly shaped re- Vsleeve 28 bears in its foremost position, as
  • 12C denotes thel lead holdingy tube and 11 the in terior threaded portion of the tubular guide 1() for the lead.
  • rllie lead holding tube 12c is flattened on two opposite sides to non-ro'- tatably hold thelead 4 of a corresponding cross section.
  • a square head ⁇ 18 serves wliichzprojects in the rlead holding tube and to which is screwed the plug ⁇ 15 provided with milled surfaces 16.
  • the leads may be. provided with ya coatingk of paper or paint or sonie other material which facilitates cutting the threads therein.
  • tlieymight have any other cross section in order to be non-rotatably held inthe 'errule
  • the conical sleeve may also serve as a protecting device for the lead, in which case the llead need not beretracted atl all,it always remainsrin writing position, whereby thesleeve is slid forward to cover the lead entirely.
  • a casing having a conical front part, sharpening means,arranged'inside said conical front part, Vsharpening means arranged inside said conicaly frontpart, means to hold the lead inside the casing, coupling means between said front part andv casing permitting a relative ldisplacement of the ⁇ partsr longitudinally and aL relative vtilting of the two lparts into the sharpening position, while the position ofthe lead remains unchanged.
  • a casing having a conical front ⁇ part, sharpening means arranged inside said conical front part, inean'sto hold the lead K- inside the casing, a coupling member rigid-V ly fixed to said conical front part and "f guidedv and longitudinally displaceable in said casing, and means connecting'said'coupliiig nieniberto other parts fixed yto said casing, said connecting means permitting a f tilting of said 'conical front part into the sharpeningposition against the lead while the position of the lead after withdrawal of the coupling member. from ⁇ the casing re-k mains unchanged.
  • combinatioma having a conical front y part, ⁇ sharpening means arranged inside said conical' irontfpart, means to hold the lead kinside the casing, acoupling member rigidly lined toy said conical front part and guided and longitudinally displaceable in said casing, a tubularguide member.
  • a pencil ofthe type describedfin combination a casing having a conicalfront part, sharpening means arranged ,inside said? conical -frontV part, means to hold they lead upcomingde the rcasing, a coupling membersrigidly Xedto saidconical rontpart and guided and longitudinally displaceable in said casing, 'a tubular guide memberl in rigid connection-withthe casing, a further sleevezslidable on said tubular guide member, and a flexible' connection between 1 rsaid coupling ⁇ memberjand said Jfurther sleeve comprising a p hollow spherical portion ontherear endfoflilaoy Isaid coupling member and a correspondingly kshaped' recess vprovided on said further sleevewithzwliich that portion engagesto permitatilting of said conical frontjpart lfromv the casing and the position of the lead remains unchanged.
  • sharpening means arranged inside said con- Ying of said conical front part against vthe lead into the sharpening'position while the coupling member is withdrawn from the casing and the position of the lead remains unchanged, aiid means to limit the longitudinal -displacement of said conical sleeve relatively to said casing.
  • a casing having a conical front part, sharpening meansv arranged 'in the front part, lead supporting means in the casing, coupling means between the front part Yin 'eosei portion o n the guide member and an outwardly ilared edge on the sleeve and permitting a tilting of said conical front part against the casing into the sharpening position in which theposition of the lead remains unchanged.
  • a casing having a conical front part, sharpening means arranged inside said conical vfront part, means to hold the lead inside the casing, a sleeve guided and loiigitudinally displaceable relatively to said casing, and a coilspring interconnecting said Vconical front part and said sleeve and permitting a tilting of said conical front part against the casing into the'sliarpening position in which tlie ⁇ .position of the lead re- Vmains unchanged.
  • aV pencil ofthe type described in combination, a casing having a conical iront part,”sliarpening means arranged inside said conical front part,y means to hold the lead inside the casing, a guide member rigidly iixed to said conical front part and Y guidedy andA longitudinally displaceable insaid casing, a sleeve rigidly fixed in said casing,and a flexible connection between said sleeve and vsaid guide .member and comprising a beaded l

Landscapes

  • Drawing Aids And Blackboards (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US350653A 1928-04-22 1929-03-28 Pencil having a sharpening device for the lead Expired - Lifetime US1780581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED55519D DE485586C (de) 1928-04-22 1928-04-22 Fuellbleistift mit einer im kegeligen vorderen Teil der Bleistifthuelse untergebrachten Schaerfvorrichtung fuer die Mine

Publications (1)

Publication Number Publication Date
US1780581A true US1780581A (en) 1930-11-04

Family

ID=7056595

Family Applications (1)

Application Number Title Priority Date Filing Date
US350653A Expired - Lifetime US1780581A (en) 1928-04-22 1929-03-28 Pencil having a sharpening device for the lead

Country Status (6)

Country Link
US (1) US1780581A (en, 2012)
BE (1) BE359014A (en, 2012)
DE (1) DE485586C (en, 2012)
FR (1) FR671583A (en, 2012)
GB (1) GB310026A (en, 2012)
NL (1) NL24176C (en, 2012)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507089A (en) * 1945-12-11 1950-05-09 Richard W Bridges Mechanical pencil with lead sharpening means
US2941508A (en) * 1955-08-29 1960-06-21 Walter B Spatz Marking pencil
US3288113A (en) * 1965-05-26 1966-11-29 Gabler Josef Self-sharpening pencil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507089A (en) * 1945-12-11 1950-05-09 Richard W Bridges Mechanical pencil with lead sharpening means
US2941508A (en) * 1955-08-29 1960-06-21 Walter B Spatz Marking pencil
US3288113A (en) * 1965-05-26 1966-11-29 Gabler Josef Self-sharpening pencil

Also Published As

Publication number Publication date
FR671583A (fr) 1929-12-14
GB310026A (en) 1930-01-16
NL24176C (en, 2012) 1930-11-15
BE359014A (fr) 1929-04-30
DE485586C (de) 1929-11-06

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