GB188272A - Improvements in devices for drawing parallel lines - Google Patents

Improvements in devices for drawing parallel lines

Info

Publication number
GB188272A
GB188272A GB352522A GB352522A GB188272A GB 188272 A GB188272 A GB 188272A GB 352522 A GB352522 A GB 352522A GB 352522 A GB352522 A GB 352522A GB 188272 A GB188272 A GB 188272A
Authority
GB
United Kingdom
Prior art keywords
straight
edge
parallel lines
pins
devices
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
GB352522A
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
Publication of GB188272A publication Critical patent/GB188272A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/02—Draughting machines or drawing devices for keeping parallelism
    • B43L13/04—Guides for rulers
    • B43L13/048—Guides for rulers with T-squares

Abstract

188,272. Kvasnicka, V. Feb. 7, 1922. Squares.-A device for facilitating drawing parallel lines comprises a straight-edge K forming a guide for a T-square B and adapted to be secured to a drawing-board &c. 2 at any desired position and inclination. The straight-edge has at one end a single hole 8, and at the other end a series of holes 9, to receive drawing-pins, the roles being formed with recesses 5 to receive the heads of the pins. The blade is off set at 6 to clear the straight-edge. In a modification, Fig. 5. the straight-edge has a shoulder 3 forming a guide for the T-square, the head of which is formed with a recess 4 to clear the heads of the pins.
GB352522A 1921-02-04 1922-02-07 Improvements in devices for drawing parallel lines Expired GB188272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS94592X 1921-02-04

Publications (1)

Publication Number Publication Date
GB188272A true GB188272A (en) 1922-11-09

Family

ID=5444788

Family Applications (1)

Application Number Title Priority Date Filing Date
GB352522A Expired GB188272A (en) 1921-02-04 1922-02-07 Improvements in devices for drawing parallel lines

Country Status (4)

Country Link
AT (1) AT94592B (en)
DE (1) DE379380C (en)
FR (1) FR546788A (en)
GB (1) GB188272A (en)

Also Published As

Publication number Publication date
DE379380C (en) 1923-08-21
FR546788A (en) 1922-11-23
AT94592B (en) 1923-10-25

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