US1987393A - Propelling pencil - Google Patents

Propelling pencil Download PDF

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Publication number
US1987393A
US1987393A US646526A US64652632A US1987393A US 1987393 A US1987393 A US 1987393A US 646526 A US646526 A US 646526A US 64652632 A US64652632 A US 64652632A US 1987393 A US1987393 A US 1987393A
Authority
US
United States
Prior art keywords
lead
tube
pencil
slot
pin
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
US646526A
Other languages
English (en)
Inventor
Dillier Alfred
Gabler Joseph
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 US1987393A publication Critical patent/US1987393A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/56—Making tipping materials, e.g. sheet cork for mouthpieces of cigars or cigarettes, by mechanical means
    • A24C5/58—Applying the tipping materials
    • A24C5/583—Applying the tipping materials to a continuous web of cigarette paper
    • 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
    • B43K21/08—Writing-core feeding mechanisms with the writing-cores fed by screws
    • 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
    • B43K21/16—Writing-core feeding mechanisms with stepwise feed of writing-cores

Definitions

  • the present invention relates to a mechanical a guide piece 8a which operates in the tube '7.
  • pencil with a lead holding sleeve ⁇ containing the The key 8 is arranged to bear on the upper end lead and surroundedby a threaded sleeve and of the lead holding tube '7.
  • an adjusting pin sliding in the lead holding sleeve ⁇ tube '7 is placed above the lead M thepushing with a toothed cheek engaging in the thread of pin 9.
  • Thelead holding tube '7 is provided opposite the to the invention, by the lower end of the lead slot '7a with a second short slot 7b through which holding sleeve being slotted and carrying on its the key 8 also extends, as shown.
  • the threaded circumference conical pressing segments on to sleeve 11 surrounds by its lower end part of the 15 which is pressed the threaded sleeve by thev acbottom end of the tube '7 constructed as a triple -15 tion of a pressure spring supported in the pencil slotted pincer, and lwhich by means of conical sleeve so that the lead is clamped at this point pressing segments 12 with which it is provided and on the displacement of the threaded sleeve is pressed inward-1y radially on to the lead and against this spring by pressure on the head of holds this fast. In the centre of the case 1 is the pencil, is released.
  • Fig. l is a longitudinal section of the pencil, and thus effects the holding of the lead in the Fig. 2 is a partial longitudinal section on a lead containing sleeve '7 and prevents the interlarger scale, mediate tube 11 from turning. 25
  • Fig. 3 is a cross-section on the line III-III
  • the pincers of Fig. 1, 12 of the lead holding sleeve '7 pressed round the Figs. 4 and 5 show a cross-section on the line lead are released and the head 5 is then manu- V--V of Fig. l in different positions, ally rotated until the toothed cheeklO comes
  • Fig. 6 shows a further cross-section on the line into the slot 11a of the threaded sleeve 11, the 30 VI--VI of Fig. 1, loosened lead M can be moved by hand as de- Fig. '7 is a partial longitudinal section o'f a sired. second form of construction.
  • Fig. 8 is a further partial longitudinal section quired, when writing, the head 5 is depressed 011 a plane dSplaCed by 90 t0 that aCCOdi'g t0 and turned manually, so that the adjusting pin 6 35 Fig. '7. by means of the key 8 which it carries pushes Fig. 9 ShOWS l2i CI'OSS-SSC'GOD 0f this 011' the the intermediate tube 11 downwardly, to release line IX-IX 0f Fig- 7, and the lead, and also causes the lead receiving tube Fig. 10 is a crossse ⁇ ction on the line X-X.
  • adjusting pin 6 has a transverse slot in which ts
  • the example according to Figs. '7-10 has for a key 8, on the lower edge of which is fitted its object a simplification of the adjustment of 55 the lead by hand.
  • the pencil in itself is made the same as for the rst example.
  • a lateral projection 19 which carries a cam 20 with two inclined sides.
  • the roller 18 strikes on the tip of the cam 2O and runs down on one of the faces, so that the bush 17 together with the threaded sleeve l1 is rotated by an angle suiiicient to again bring the toothed cheek 10 out of the range of the slot 11a.
  • the lead can be instantaneously held fast by spring pressure so that in writing and drawing no pressing back on the lead takes place. No breakage of lead can take place by this lead being too rmly gripped.
  • no two-part guide cone is used as with previous constructions, no lateral displacement of the lead can take place in drawing in consequence of want of accuracy of the cone.
  • the jaws which hold the lead fast have movement only in a lateral direction, and they are entirely invisible to the eye.
  • a mechanical pencil comprising a casing tube l having a conical tip 2a at one end, a head 5 slidably and revolubly mounted on the other end of the casing tube, an adjusting pin 6 secured to and movable with said head and having a radially projecting key 8 at its inner end; a lead-receiving tube 7 fixed against longitudinal movement and revoluble in the casing tube and in the inner end of which said adjusting pin is movable, said lead-receiving tube having radially movable lead gripping members at its outer end provided on their outer sides with cams 12, an intermediate tube 11 through which the leadreceiving tube extends and which intermediate tube is revoluble and is longitudinally movable on said lead receiving tube, said intermediate tube having means at its outer end to coact with said cams to release said members of the leadreceiving tube from the lead when said intermediate tube is moved outwardly by said key, a spring to resist out
  • a mechanical pencil comprising a casing tube, a lead-receiving tube xed against longitudinal movement and revoluble therein, a longitudinally movable, non-revoluble internally screw threaded intermediate tube through which said lead-receiving tube extends, a spring to resist movement of the intermediate tube in one direction, said lead-receiving tube and said intermediate tube having means to cause the former to grip the lead while the intermediatetube is in normal position and to release the lead when the intermediate tube is moved against the resistance of the spring, a pushing pin in the lead-receiving tube having means to engage the screw thread of the intermediate tube and thereby cause said pin to move axially when the lead receiving tube is revolved and means to operate the intermediate tube and the pushing pin.
  • a pencil as claimed in claim 2 including means to at will axially move the pushing pin or to engage the same with the thread of the intermediate tube and thereby revolve the lead receiving tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US646526A 1931-12-14 1932-12-09 Propelling pencil Expired - Lifetime US1987393A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE391075X 1907-07-31

Publications (1)

Publication Number Publication Date
US1987393A true US1987393A (en) 1935-01-08

Family

ID=6377742

Family Applications (1)

Application Number Title Priority Date Filing Date
US646526A Expired - Lifetime US1987393A (en) 1931-12-14 1932-12-09 Propelling pencil

Country Status (5)

Country Link
US (1) US1987393A (is")
BE (1) BE393010A (is")
FR (2) FR391075A (is")
GB (1) GB391075A (is")
NL (1) NL36324C (is")

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2606939C3 (de) * 1976-02-20 1980-10-02 Gebr. Schmidt, Fabrik Fuer Feinmechanik, 7742 St Georgen Schreibgerät für dünne Bleiminen

Also Published As

Publication number Publication date
GB391075A (en) 1933-04-20
NL36324C (is")
BE393010A (is")
FR747417A (fr) 1933-06-17
FR391075A (fr) 1908-10-22

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