US2190798A - Pressure operated magazine pencil - Google Patents

Pressure operated magazine pencil Download PDF

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Publication number
US2190798A
US2190798A US292463A US29246339A US2190798A US 2190798 A US2190798 A US 2190798A US 292463 A US292463 A US 292463A US 29246339 A US29246339 A US 29246339A US 2190798 A US2190798 A US 2190798A
Authority
US
United States
Prior art keywords
gripping element
tube
tongues
longitudinal
pressure operated
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
US292463A
Other languages
English (en)
Inventor
Morlock Heinrich
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 US2190798A publication Critical patent/US2190798A/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
    • B43K21/22—Writing-cores gripping means, e.g. chucks

Definitions

  • a connecting tube enclosing the rear gripping element is connected with 5 the front gripping element by two longitudinal tongues formed on the front edge of the connecting tube, which tongues have bent front ends which are hooked into the tubular rear end of the front gripping element which has' an annular bead open in inward direction and in which the outwardly bent front ends of the longitudinal tongues of the connecting tube engage.
  • a braking device is preferably arranged in the point of the pencil, which device acts on Y a thickened portion of thetube of the front grip- 1 ping element, for example, by means oi resilient arms, so that this element only participates in the longitudinal displacement of the connecting tube which surrounds the rear gripping element when the thickened portion of the tube is located outside the range of the braking device, or when the ends' of the longitudinal tongues on the front or rear end bear against the bead.
  • Fig. 1 shows the magazine pencil in longitudinal section
  • Figs. 2, 3 and. l show the front end of the magazine pencil in longitudinal section, and each snows the gripping element in a different position.
  • the pressure operated magazine pencil comprises a tubular front gripping element l and a reartubular gripping element il. These elements are arranged in a tube lll whose rear end is rigidly connected to a lead magazine tube il and pressed in rearward direction by a pressure spring 23.
  • the tube l0 has two longitudinal slots It through which two outwardly bent flaps 32 on the rear edge of the rear gripping element ,Il project and serve for guiding this element.
  • a pressure spring it acts on these iiaps 32 through the intermediary of a sleeve 3i.
  • the tube ill has also on its front end two longitudinal tongues il ⁇ displaced through an angle of relative to the longitudinal slots I 6, the front ends 8 of these tongues 9 being bent outwardly.
  • front ends 8 engage from the inner side in an annular bead 50 formed ona tube section 5 and open in inward direction, this tube section 5 having a narrowed front end fitting tightly on the rear end of the front gripping element l. In this manner the front gripping element l is connected with thelead magazine tube Il.
  • the sleeve 25 has'an inturnedV bottom ange with two radial slots 28 through which the two longitudinal tongues 9 of the tube il! extend.
  • a tube section 29 is xed, whose rounded inner front ⁇ edge 30 acts as clamping ring on the tapered.
  • the above mentioned internal parts are enouter surfaces of the clamping jaws i8 of the gripping element I1.
  • a metal casing sleeve di surrounding the whole rear part of the magazine pencil has a portion clamped between the sleeve 36 and the point 38.
  • the annular bead 50 is vof cylindrical shape and has in its interior so much clearance for the front ends 8 of the longitudinal tongues 9, that these can freely shift longitudinally therein. Consequently, the front gripping element l does not move along the entire path of movement of the lead magazine tube Il, the connecting tube lll and the longitudinal tongues t.
  • the path of movement of the front gripping element l can be shorter than the displacement of the longitudinal tongues 9 by the distance which these tongues can shift freely in the bead till.
  • the front gripping element l will no longer project from the aperture in the front a distance equal to the path of movement of the longitudinal tongues 9.'
  • the clamping cone on the front gripping element I is'shorter so that,
  • a braking device 53 is arranged in the point 33 of the pencil and re siliently bears against the tube ofthe front gripper ⁇ element i with at least two oppositely situated arms 5d.
  • the aiect of this br device is .assisted by a thickening 55 on the element i.,
  • the front gripping element i does ⁇ not continue its forward displacement.4 Only when the front en 9 bear against the front wall of the bead 50, does the front gripping element i continue, its forward movement. This -element allows the lead, which in the meantime is pushedforward by the jaws l@ of the rear gripping element H, to slip partly through it and also. moves partly-with the lead the above mentioned distance in forward direction, the

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US292463A 1938-09-23 1939-08-29 Pressure operated magazine pencil Expired - Lifetime US2190798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE532194X 1938-09-23

Publications (1)

Publication Number Publication Date
US2190798A true US2190798A (en) 1940-02-20

Family

ID=6555329

Family Applications (1)

Application Number Title Priority Date Filing Date
US292463A Expired - Lifetime US2190798A (en) 1938-09-23 1939-08-29 Pressure operated magazine pencil

Country Status (3)

Country Link
US (1) US2190798A (fr)
FR (1) FR859062A (fr)
GB (1) GB532194A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448356A (en) * 1945-03-05 1948-08-31 Samuel M Cleveland Mechanical pencil with step-by-step feed
US2486663A (en) * 1946-03-01 1949-11-01 Moore Pen Company Barrel collet for mechanical pencils

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2981226B1 (fr) 2011-10-06 2014-08-29 Converteam Technology Ltd Systeme de conversion d'un courant continu en un courant alternatif comportant un organe de correction de la tension delivree comprenant un organe de mesure d'une composante basse frequence de ladite tension, et procede de commande d'un tel systeme

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448356A (en) * 1945-03-05 1948-08-31 Samuel M Cleveland Mechanical pencil with step-by-step feed
US2486663A (en) * 1946-03-01 1949-11-01 Moore Pen Company Barrel collet for mechanical pencils

Also Published As

Publication number Publication date
FR859062A (fr) 1940-12-10
GB532194A (en) 1941-01-20

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