US2560832A - Multicolor magazine pencil - Google Patents

Multicolor magazine pencil Download PDF

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Publication number
US2560832A
US2560832A US757974A US75797447A US2560832A US 2560832 A US2560832 A US 2560832A US 757974 A US757974 A US 757974A US 75797447 A US75797447 A US 75797447A US 2560832 A US2560832 A US 2560832A
Authority
US
United States
Prior art keywords
lead
tube
magazine
pencil
tubes
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
US757974A
Other languages
English (en)
Inventor
Votruba Vojtech
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.)
Koh I Noor Pencil Factory L &
Koh-I-Noor Pencil Factory L & C Hardtmuth
Original Assignee
Koh I Noor Pencil Factory L &
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 Koh I Noor Pencil Factory L & filed Critical Koh I Noor Pencil Factory L &
Application granted granted Critical
Publication of US2560832A publication Critical patent/US2560832A/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
    • B43K21/16—Writing-core feeding mechanisms with stepwise feed of writing-cores
    • B43K21/20—Writing-core feeding mechanisms with stepwise feed of writing-cores with writing-cores automatically replaced from magazines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/10—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units
    • B43K24/16—Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units operated by push-buttons

Definitions

  • This invention relates ⁇ to multi-lead magazine pencils of the type comprising a pressure cap which projects the leads and wherein the magazine tube has guide channels therein for the individual leads and is rotatably mounted within thepencil body so thatby positioning a particular guide channel in alignment with the usual main lead guide tube located in the longitudinal axis of the pencil the appropriate lead will automatically feed from its channel into or out of the main tube.
  • Pencil holders for a plurality of leads in the form of so-calledartists pencils, are known, in which a common magazine tube having partitions for separating the leads is employed, which tube is connected at its rear endby means of thin pinsl to a disc by which the casing of the holder is closed. Owing to these thin pins, the magazine tube can rock laterally to and fro inside the casing of the holder.
  • the desired lead is brought into a position opposite the central Aoutlet aperture in the point of the holderby a corresponding rotation and inclination of the holder, whereupon the lead advances by its own weight, if necessary assisted by a jerk excited on the holder.
  • the invention is applicable to any type of magazine pencil.
  • coloured leads of small calibre others hardly come into consideration for multicolour magazine pencils
  • arrangements Vknown per se which automatically ensure that theportion of lead protruding from the point cannever exceed a certain maximum length even if the pressure cap is most carelessly actuated. For this reason, such a type of magazine pencil has been selected for the diagrammatic illustration of the invention.
  • Figure 1 is a longitudinal section of a magazine pencil in accordance with the invention
  • Figure 2 is a section along the line II-II of Figure 1,
  • Figure 3 is a section along the line III-III of Figure 1,
  • Figure 4 is a section along the line IV-IV of Figure 1,
  • Figure v5 is an elevation of the tube carrying the magazine pencil
  • Figure ⁇ 6 is a section along the line VI--VI of Figure 5
  • Figure 7 is an elevation of the magazine tube of the magazine pencil
  • Figure 8 is a section along the line VIII--VIII of Figure '7,
  • Figure 9 is an elevation of the lead tube of the magazine pencil
  • Figure 10 shows a part of Figure 5 on an enlarged scale
  • Figure l1 is a section along the line XI-XI of Figure 10.
  • the guide tube 2 intended to receive the lead is displaceably mounted together with the gripping-,member 3 embracing the lead in the casing or kshank l vof the magazine pencil, while the clamping ring il is rigidly connected to the shank l.
  • the Vspring 5 between the upper end of ring il and shoulder 2a of tubeil serves only as a closing spring for the gripping member 3 and causes this gripping member to be drawn into the clamping'ring d and thus always. to be so compressed that the lead held therein cannotshift.
  • the displaceable guide :tube 2 is encircled by a further,
  • the pointed portion B has, at its lower end, two or more ngerlike extensions 6a ( Figure 6), with which it extends through the clamping ring 4.
  • the pointed portion B is secured to these extensions 6a, so that it can be moved together with the supporting tube 6.
  • the pointed portion 8 has in its forward part a channel 9, through which the lead passes with friction.
  • a spring 'I independent of the closing spring 5, between the upper edge of ring 4 and a shoulder in an upper portion of tube 6 urges the supporting tube and consequently the pointed portion 8 to the rear end'position.
  • a pressure cap I is mounted on the rear end of the supporting tube 6.
  • the magazine tube I4 rotatably mounted in the upper half of the supporting tube 6, contains, for accommodating and holding apart four different leads (colours), four lead tubes I5a to ld ( Figure 9), which extend divergently downward and are resiliently secured at their upper ends by steel ⁇ wires I'I in the disk IG and in the mag-azine tube I4.
  • the upper end of the magazine tube I4 is rigidly connected to the pressure head II.
  • the four lead tubes, ⁇ when the magazine tube I4 and supporting tube -B are locked, will be so positioned at their lower free ends that one of them terminates in the axis of the pencil, so that only the selected lead can slide into the guide tube 2.
  • the pencil is held by the shank l with its pointed portion 8 directed vertically downwards and pressure is exerted on the head II or on the pressure cap l0, so that this cap is moved downwards against the tension of the spring the pointed portion 8 secured to the supporting tube 6 is also pushed down, while the guide tube 2 with the gripping member 3 and the lead situated therein remains stationary. Not until a distance of the length d is covered will the guide tube 2 with the gripping member 3 also participate in the downward movement of the pressure cap I0, the supporting tube 5 and the pointed portion ⁇ 8, because after this lead has been traversed the supporting tube 6 is applied by the edge 6b ( Figures 1 and 5) against the collar 2a of the guide tube 2.
  • the gripping member 3 opens because it is forced out of the clamping ring 4 and frees the lead.
  • the lead situated in the guide tube 2 at the time then falls out of this tube through the gripping member 3 to the rear end (the upper end in the drawing) of the channel 9, which has also moved further downwards with the opening gripping member 3 and lies further away from this gripping member by the distance d at the end of the movement.
  • the pointed portion 8 will serve in this completely depressed position of the cap to catch the freely falling lead.
  • the head Il and the pressure cap I0 are rst pressed into the terminal position, the pencil being in the vertical position with the point directed upwards, whereby the lead hitherto in use falls out of the gripping member 3 through the guide tube 2 and back into the lead tube the free end of which is at this moment disposed -centrally with respect to the pencil.
  • the path is thus open for the selection of a different lead (colour).
  • the head Il is withdrawn with the magazine tube I4 and the lead tubes I5a to 15d from the body of the pencil, in which operation a small resistance caused by the sliding of the boss 6c of the supporting tube 6 out of a notch in the magazine tube I4 must be overcome.
  • the leads are inserted in their outlet apertures. Distribution of the leads can be facilitated by corresponding coloured signs on the lead tubes.
  • the boss 6c is reengaged in the corresponding recess in the magazine tube.
  • the pencil must be held approximately vertical with the point directed upwards, in order that the leads may not fall out of the tubes.
  • a multi-lead magazine pencil comprising a tubular casing, a main lead guide tube coaxially disposed within the lower end of the casing, a magazine tube within the casing above the main lead guide tube and adapted for rotation and axial movement relative to the casing, a pressure head carried by and movable with said magazine tube, a plurality of lead tubes Within the magazine tube and individually resiliently secured to the pressure head, a supporting tube within the casing enclosing the magazine tube, and complemental means on the supporting tube and on the magazine tube for successively presenting and holding a lead tube in coaxial alignment with the main lead guide tube.
  • a multi-lead magazine pencil according to claim 1 wherein the lead tubes at their upper ends are separately attached by means of stili, resilient wires to the pressure head and are so held by the magazine tube, which is connected with the pressure head, that each of the lead tubes has the tendency to pivot itself outwardly into a position in which the lead tubes lie at equal distances from the central axis of the pencil.
  • a multi-lead pencil according to claim 3 wherein the lead tubes extend beyond the inner end of the magazine tube and the supporting tube has a attened portion for so positioning the inner end of one of said lead tubes that it will be in axial alignment with the main lead guide tube.
  • a multi-lead magazine pencil according to claim 1 wherein the complemental means for successively presenting and holding the lead tube in alignment with the main lead guide tube com-l prises longitudinally extending channels on the magazine tube and within which channels the lead tubes are adapted to be guided, and a flattened portion on the supporting tube for so positioning the inner end ofthe one of said lead tubes that it will be in axial alignment with the main lead guide tube, and an inwardly projecting, resiliently mounted portion on the supporting tube adapted to engage in the longitudinally extending recesses in the magazine tube formed between adjacent channels in said magazine tube.
  • VOTRUBA VOTRUBA
  • VOJTECH VOTRUBA

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US757974A 1942-01-27 1947-06-30 Multicolor magazine pencil Expired - Lifetime US2560832A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE237015X 1942-01-27

Publications (1)

Publication Number Publication Date
US2560832A true US2560832A (en) 1951-07-17

Family

ID=5902870

Family Applications (1)

Application Number Title Priority Date Filing Date
US757974A Expired - Lifetime US2560832A (en) 1942-01-27 1947-06-30 Multicolor magazine pencil

Country Status (6)

Country Link
US (1) US2560832A (ru)
BE (1) BE463117A (ru)
CH (1) CH237015A (ru)
FR (1) FR889723A (ru)
GB (1) GB628558A (ru)
NL (1) NL65684C (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334615A (en) * 1962-10-20 1967-08-08 Frank T Johmann Writing instrument

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1275408B (de) * 1959-03-25 1968-08-14 Walter Naegele Wechselschreibstift
DE3910546C1 (en) * 1989-04-01 1990-10-11 J. S. Staedtler Gmbh & Co, 8500 Nuernberg, De Fillable pencil with resiliently mounted lead clamping device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US256802A (en) * 1882-04-18 Joseph illfeldee

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US256802A (en) * 1882-04-18 Joseph illfeldee

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3334615A (en) * 1962-10-20 1967-08-08 Frank T Johmann Writing instrument

Also Published As

Publication number Publication date
FR889723A (fr) 1944-01-18
BE463117A (ru)
NL65684C (ru)
GB628558A (en) 1949-08-31
CH237015A (de) 1945-03-31

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