GB510878A - Improvements in drawing instruments - Google Patents

Improvements in drawing instruments

Info

Publication number
GB510878A
GB510878A GB376238A GB376238A GB510878A GB 510878 A GB510878 A GB 510878A GB 376238 A GB376238 A GB 376238A GB 376238 A GB376238 A GB 376238A GB 510878 A GB510878 A GB 510878A
Authority
GB
United Kingdom
Prior art keywords
constructed
spline
weight
drawing instruments
firman
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
GB376238A
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.)
REGINALD ARTHUR N FA
Original Assignee
REGINALD ARTHUR N FA
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 REGINALD ARTHUR N FA filed Critical REGINALD ARTHUR N FA
Priority to GB376238A priority Critical patent/GB510878A/en
Publication of GB510878A publication Critical patent/GB510878A/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
    • B43L13/20—Curve rulers or templets
    • B43L13/22—Adjustable curve rulers

Landscapes

  • Mechanical Operated Clutches (AREA)

Abstract

510,878. Curve-describing instruments. FIRMAN, R. A. Feb. 7, 1938, No. 3762. [Class 97 (iii)] A spline weight a is constructed so that the whole of its mass bears directly on the drawing board and has its undersurface so constructed, e.g. by attaching a friction producing material b, as to have a great resistance to sliding. The spline is resiliently attached to the weight a by a locating member c at the end of a spring loaded shaft d.
GB376238A 1938-02-07 1938-02-07 Improvements in drawing instruments Expired GB510878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB376238A GB510878A (en) 1938-02-07 1938-02-07 Improvements in drawing instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB376238A GB510878A (en) 1938-02-07 1938-02-07 Improvements in drawing instruments

Publications (1)

Publication Number Publication Date
GB510878A true GB510878A (en) 1939-08-08

Family

ID=9764473

Family Applications (1)

Application Number Title Priority Date Filing Date
GB376238A Expired GB510878A (en) 1938-02-07 1938-02-07 Improvements in drawing instruments

Country Status (1)

Country Link
GB (1) GB510878A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607119A (en) * 1946-11-02 1952-08-19 Henry E Walker Drafting instrument

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607119A (en) * 1946-11-02 1952-08-19 Henry E Walker Drafting instrument

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