US3094102A - Lead holder or the like - Google Patents

Lead holder or the like Download PDF

Info

Publication number
US3094102A
US3094102A US830517A US83051759A US3094102A US 3094102 A US3094102 A US 3094102A US 830517 A US830517 A US 830517A US 83051759 A US83051759 A US 83051759A US 3094102 A US3094102 A US 3094102A
Authority
US
United States
Prior art keywords
casing
holder
lead
plunger
lead 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 - Lifetime
Application number
US830517A
Other languages
English (en)
Inventor
Schwarzaugl Josef Maria
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.)
Faber Castell AG
Original Assignee
AW Faber Castell GmbH and Co
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 AW Faber Castell GmbH and Co filed Critical AW Faber Castell GmbH and Co
Application granted granted Critical
Publication of US3094102A publication Critical patent/US3094102A/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
    • B43K21/00—Propelling pencils
    • B43K21/02—Writing-core feeding mechanisms
    • B43K21/04—Writing-core feeding mechanisms with the writing-cores brought into position by gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00—Propelling pencils
    • B43K21/02—Writing-core feeding mechanisms
    • B43K21/22—Writing-cores gripping means, e.g. chucks

Definitions

  • the tapered shaft consists of a tubular casing of a light material, for example, wood or plastic, which contains lead which is inserted into lighter rear part of the holder projecting from the tapered shaft gives the holder the even stepped upon.
  • the principal object of the present invention to improve the lead holder or similar implement as above described by encasing the part of the plunger which projects toward the rear of the tapering shaft so as to protect the plunger from being accidentally depressed or damaged.
  • This has the further advantage that at least this rear part of the plunger may be made of a very light material and, if desired, of a tubular shape so as to permit pencil leads to be inserted into the holder which may have a length as great as the length of the entire holder.
  • the rear end of the tubular plunger is preferably closed to form a small knob which only needs to project from the tubular casing for a distance suflicient to allow the plunger to be depressed far enough so that the collet will be 7 opened.
  • This tubular construction also has the advantage that the rear part of the holder is of a much lighter weight so that the center of gravity of the entire holder will be placed still more forwardly toward the writing end.
  • the same may be made either of a round or angular cross section and, if desired, its outer surface may be provided with longitudinal or transverse grooves, indentations or small projections.
  • the shaftlike lead holder consists of a thicker front part 3, which tapers from a point near or below the center toward both ends, and a slender rear part which primarily consists of a substantially cylindrical tubular extension or casing 4, the front end of which may be secured to the rear end of part 3 by being pressed or screwed into it.
  • the tapered front tip 2 which is secured to the main body of part 3 by being screwed upon a threaded sleeve 8 which, in turn, is screwed into part 3.
  • a collet l of a construction known as such is connected by screw threads 1' to a tribe 5 which extends through the rear end of the threaded sleeve 8.
  • the two parts of the shaft of the lead holder that is, the thicker tapered front part 3 and the cylindrical rear casing 4 may be made of plastic, or the trout part may be made of plastic or wood and the tubular rear casing 4 may be made of a light metal, for example, aluminum.
  • a mechanical lead holder or the like having a lead clamping mechanism the combination which comprises: a tubular front section and a tubular rear section together forming a. casing, a plunger guided in the longitudinal opening of said casing and having a relatively short portion projecting out of the rear section of the casing so that the major portion of said plunger is within the confines of and thereby protected by the rear section of said casing, a collet guided within the front section of said casing, a collet guided within the front section of said casing and connected to said plunger for gripping and releasing a lead piece or the like, spring means within said front section, said spring means surrounding said plunger with one end thereof abutting against said casing and the other end thereof abutting against said plunger,
  • the front end of said front section being conical and a front portion of said collet being pressed against the forward edge of said front end by said spring means, the front section of said casing having a double-conical outer surface convering from a point near the longitudinal center thereof toward both ends so that the largest diameter of the front section of said casing is at its longitudinal center, said rear section of said casing having a length substantially equal to the length of said front section of said casing and having a smaller diameter than the narrowest portion of the front section of said casing, said rear section of said casing being slightly tapered rearwardly, and said lead holder having its center of gravity within said tubular front section of said casing.

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Toys (AREA)
US830517A 1958-05-10 1959-07-30 Lead holder or the like Expired - Lifetime US3094102A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEF25729A DE1209911B (de) 1958-05-10 1958-05-10 Schreibstift od. dgl. mit einer ein auswechselbares Minenstueck haltenden Spannzange
DEF0016166 1959-01-31

Publications (1)

Publication Number Publication Date
US3094102A true US3094102A (en) 1963-06-18

Family

ID=43014168

Family Applications (1)

Application Number Title Priority Date Filing Date
US830517A Expired - Lifetime US3094102A (en) 1958-05-10 1959-07-30 Lead holder or the like

Country Status (5)

Country Link
US (1) US3094102A (fr)
CH (2) CH373666A (fr)
DE (1) DE1209911B (fr)
FR (2) FR1223868A (fr)
GB (2) GB861168A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2817119A4 (fr) * 2012-02-20 2015-03-04 Anca Pty Ltd Adaptateur pour pince de serrage
CN108819564A (zh) * 2018-09-17 2018-11-16 彭子涵 一种铅笔加长笔筒

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4468146A (en) * 1982-05-13 1984-08-28 Talbot Toys Ltd. Crayon holder
US5221151A (en) * 1992-05-28 1993-06-22 Jun-Lian Kuo Mechanical writing apparatus with a mechanism for retracting presharpened pencil lead elements

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US223513A (en) * 1880-01-13 Joseph hoffman
US240712A (en) * 1881-04-26 Dorfee
US294317A (en) * 1884-02-26 Hackee
US364220A (en) * 1887-06-07 Jesse a
US654989A (en) * 1900-04-09 1900-07-31 Harvey Longenecker Duplex penholder.
US779082A (en) * 1904-10-22 1905-01-03 Eagle Pencil Co Penholder.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7168C (de) * J. RECKENDORFER in New-York Neuerungen an Bleistifthaltern
US1868951A (en) * 1931-11-24 1932-07-26 Jr William C Sanford Pencil
DE934516C (de) * 1953-11-19 1955-10-27 Kautt & Bux Kg Schreibhalter mit Spannzange zum Fassen von doppelseitig gespitzten und auswechselbaren Griffel-, Blei- und Farbminen und einem Hohlraum zur Aufnahme von Reserveminen
DE1740728U (de) * 1956-12-24 1957-02-28 Staedtler Fa J S Klemmzange fuer schreibstifte.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US223513A (en) * 1880-01-13 Joseph hoffman
US240712A (en) * 1881-04-26 Dorfee
US294317A (en) * 1884-02-26 Hackee
US364220A (en) * 1887-06-07 Jesse a
US654989A (en) * 1900-04-09 1900-07-31 Harvey Longenecker Duplex penholder.
US779082A (en) * 1904-10-22 1905-01-03 Eagle Pencil Co Penholder.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2817119A4 (fr) * 2012-02-20 2015-03-04 Anca Pty Ltd Adaptateur pour pince de serrage
US9586268B2 (en) 2012-02-20 2017-03-07 Anca Pty Ltd Collet adaptor
CN108819564A (zh) * 2018-09-17 2018-11-16 彭子涵 一种铅笔加长笔筒
CN108819564B (zh) * 2018-09-17 2019-08-20 彭子涵 一种铅笔加长笔筒

Also Published As

Publication number Publication date
DE1209911B (de) 1966-01-27
FR1223868A (fr) 1960-06-21
GB861410A (en) 1961-02-22
GB861168A (en) 1961-02-15
CH373666A (de) 1963-11-30
CH399950A (de) 1965-09-30
FR76199E (fr) 1961-09-22

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