GB351747A - Improvements in or relating to propelling pencils - Google Patents

Improvements in or relating to propelling pencils

Info

Publication number
GB351747A
GB351747A GB2032830A GB2032830A GB351747A GB 351747 A GB351747 A GB 351747A GB 2032830 A GB2032830 A GB 2032830A GB 2032830 A GB2032830 A GB 2032830A GB 351747 A GB351747 A GB 351747A
Authority
GB
United Kingdom
Prior art keywords
tube
guide
sleeve
rod
carrier
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
GB2032830A
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
Priority to GB2032830A priority Critical patent/GB351747A/en
Publication of GB351747A publication Critical patent/GB351747A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K21/00Propelling pencils
    • B43K21/02Writing-core feeding mechanisms
    • B43K21/08Writing-core feeding mechanisms with the writing-cores fed by screws

Landscapes

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

Abstract

351,747. Pencil holders. JEFFREYS, R. W., 42, Herongate Road, Wanstead, and CANNON, F., 125, Ardgowan Road, Catford, both in London. July 4, 1930, No. 20328. [Class 146 (iii).] In a screw-propelling pencil of the kind in which the lead or crayon is inserted in a carrier 1, as shown in the Figure, slidable, under the influence of a spring 4 and a lead-extruding rod 3 which engages with a helical track 6, along a slotted guide-tube 9 stationarily mounted in the point section 14 of the pencil, the carrier 1 is provided with an enlargement 2 which is arrested in its travel by an internal abutment 17 in the guide-tube 9 while the leadextruding rod 3 advances further, and the point-section 14 is provided with a nose 15 which is detachable to expose the carrier 1, but which only functions when attached to resist lateral pressure exerted upon the lead. A slotted tube 16, adapted to slide in the guide-tube 9, contains the spring 4 and the rod 3, the latter having a cranked end 5 adapted to protrude through the slotted tube 16 and guidetube 9 to engage with the helical track strip 6. The helical strip 6 is clamped intermediate of its ends within a split sleeve 7 and is rotatable between an abutment 8 on the guide-tube 9 and a washer 10 which is seated upon an inturned rim 11 of the sleeve 7 and is also in contact with a sleeve 12 fixed to the guide-tube 9. The sleeve 7 is frictionally held in the main case section 13 of the pencil and the sleeve 12 is similarly held in the section 14 so that one can be rotated in relation to the other. When the case-parts 13, 14 are rotated relatively to one another the cranked end 5 of the leadextruding rod 3 rides in the track 6 and the carrier 1, 2 is either propelled or retracted. Continued rotation to retract the lead causes the cranked end 5 to ride off the extreme end of the track 6 and re-enter it by forcing a path between the end of the strip and the abutment 8, this action causing a clicking noise to denote the end of the travel of the rod 3. A similar action takes place at the other end of the helical track 6.
GB2032830A 1930-07-04 1930-07-04 Improvements in or relating to propelling pencils Expired GB351747A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2032830A GB351747A (en) 1930-07-04 1930-07-04 Improvements in or relating to propelling pencils

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2032830A GB351747A (en) 1930-07-04 1930-07-04 Improvements in or relating to propelling pencils

Publications (1)

Publication Number Publication Date
GB351747A true GB351747A (en) 1931-07-02

Family

ID=10144153

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2032830A Expired GB351747A (en) 1930-07-04 1930-07-04 Improvements in or relating to propelling pencils

Country Status (1)

Country Link
GB (1) GB351747A (en)

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