GB236475A - Improvements in pencil cases - Google Patents

Improvements in pencil cases

Info

Publication number
GB236475A
GB236475A GB273625A GB273625A GB236475A GB 236475 A GB236475 A GB 236475A GB 273625 A GB273625 A GB 273625A GB 273625 A GB273625 A GB 273625A GB 236475 A GB236475 A GB 236475A
Authority
GB
United Kingdom
Prior art keywords
tube
lead
shell
projecting
sleeve
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
Application number
GB273625A
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
Priority to NL19802D priority Critical patent/NL19802C/xx
Priority to DE1924B0115424 priority patent/DE432836C/en
Application filed by Individual filed Critical Individual
Priority to GB273625A priority patent/GB236475A/en
Priority to DEP49830D priority patent/DE448931C/en
Priority to US12943A priority patent/US1567910A/en
Publication of GB236475A publication Critical patent/GB236475A/en
Priority to FR605510D priority patent/FR605510A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/10Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units
    • B43K24/14Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units operated by turning means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/10Mechanisms for selecting, projecting, retracting or locking writing units for selecting, projecting and locking several writing units

Landscapes

  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Abstract

236,475. Brynda, W. F. Jan. 30, 1925. Pencil holders. - In magazine pencil holders containing leads of different grades or colours, the leads are brought selectively into the writing position by longitudinal and rotary movement of one tubular member within another, the means for feeding a lead to compensate for wear consisting either of a simple pusher acting upon the lead, or a screw device for retracting the inner portion of the casing over the lead. As shown in Figs. 1 and 4, a tube 2 slidable within a tubular shell 1 is closed at its lower end by a slotted plug 3 - which forms a guide for resilient slidable arms 5 of wire or the like projecting therethrough and carrying the leads 8 within containers or clamping sheaths 7 at their ends. Longitudinal slots 10 extending to the lower end of the tube 2 are disposed in radial alignment with each arm 5, and in the normal writing position one of these slots is engaged by a guiding projection 11 on the inside of the sleeve 1. The projection 11 is disengaged from the slot 10 when the tube 2 is pulled out to its full extent, enabling the tube to be rotated until an indicating mark on its periphery corresponding to any particular lead is aligned with an index on the shell. In this position thelower end of the arm 5 carrying the required lead is in register with an inwardly projecting abutment 9 on the shell, so that when the tube 2 is again pushed into the, shell this arm is arrested, the arms carrying the other leads being moved downwardly owing to their frictional engagement with their guiding plug 3. The lead on the arrested arm is guided into the central position by a conical cap 21 screwed upon the tube 2, and projects through the slotted end 4<1> of a guiding tip 4, integral with or attached to the tube 2, being clamped in the writing position by screwing down the cap 21. A slotted tube 12, secured against rotation within the shell 1 by means of a transverse pin 13, forms a guide for a push rod 14, which is connected by a pin 15, extending through the slot 18 in the tube 12, to an actuating sleeve 16 upon the shell enabling the lead to be projected by pushing it from within its sheath 7 to compensate for wear, after first loosening the. clamping-cap 21. A spring 19 surrounding the tube 12, and between the plug 3 and the transverse pin 15, tends to hold the push rod in its inoperative position, and also facilitates the outward movement of the tube 2 when selecting another lead. In a modification, shown in Fig. 6, the lead carriers 5 comprise tubular sheaths provided at their inner ends with pins 23 projecting through longitudinal slots 24 in a sleeve 25 which is secured within the tube 2 and extends beyond its ends. The pins 23 permit a rocking movement, enabling a lead carrier to be guided through the axial aperture of the conical guide cap 26 when the lower end of the carrier abuts against a fixed projecting- pin 91, which is operative when the tube 2 is pushed within the shell. The tube 2 is provided with external screw threads for a nut 29 which is positioned to adjust the amount of projection of the tube 2 relatively to the shell 1 to vary the amount of lead 8 projecting. The projecting- pin 91 is secured in an eccentric position upon a plate 33 which forms one end of a refill chamber 31. In another modification of the leadadjusting device, shown in Fig. 12, the lower end of the inner tube 2 is provided with a tubular extension 36 having grooves or apertures 38 to receive teeth 37 on a nut 35 when the tube 2 is pushed within the shell 1 to project the leadcarrier aligned with the projection 9 on the wall of the shell. The coupling-nut 35 is carried on a screw 34 which is secured to a rotatable end cap 33. In another modification of the leadadjusting device, shown in Fig. 16, the lead carriers 44 which extend within longitudinal slots 43 in the reduced end 42 of a tube 41 fixed within the shell 39. The tube 41 is closed at its lower end by a disc 50 which forms an abutment for the head 49 of a screw 47 secured on the end cap 48. The screw 47 engages a nut or plug 46 at the lower end of a movable sleeve 45 which surrounds the reduced lower end 42 of the inner tube 41 and has an inward projection 51 which can be positioned to engage the lower end 44 of the lead carrier projecting through the slot 43. By pulling upon the cap 48, the sleeve 45 is moved longitudinally, beyond the end of the shell 39, the flange 46 at its upper end also retracting the projecting lead carrier, and in this rearward position the projection 51 of the sleeve enters a recess 43<a> at the bottom of the slot 43, allowing the sleeve to be rotated relatively to the shell to position its projection 51 beneath another lead carrier which is projected by pushing the sleeve in again.
GB273625A 1925-01-30 1925-01-30 Improvements in pencil cases Expired GB236475A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL19802D NL19802C (en) 1925-01-30
DE1924B0115424 DE432836C (en) 1925-01-30 1924-08-30 Exchange pen
GB273625A GB236475A (en) 1925-01-30 1925-01-30 Improvements in pencil cases
DEP49830D DE448931C (en) 1925-01-30 1925-02-20 Exchange pen
US12943A US1567910A (en) 1925-01-30 1925-03-03 Magazine pencil
FR605510D FR605510A (en) 1925-01-30 1925-09-24 Improvements to mechanical pencils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB273625A GB236475A (en) 1925-01-30 1925-01-30 Improvements in pencil cases

Publications (1)

Publication Number Publication Date
GB236475A true GB236475A (en) 1925-07-09

Family

ID=9744906

Family Applications (1)

Application Number Title Priority Date Filing Date
GB273625A Expired GB236475A (en) 1925-01-30 1925-01-30 Improvements in pencil cases

Country Status (4)

Country Link
DE (2) DE432836C (en)
FR (1) FR605510A (en)
GB (1) GB236475A (en)
NL (1) NL19802C (en)

Also Published As

Publication number Publication date
NL19802C (en)
DE448931C (en) 1927-10-03
FR605510A (en) 1926-05-28
DE432836C (en) 1926-08-18

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