GB352755A - Improvements in drafting instruments - Google Patents

Improvements in drafting instruments

Info

Publication number
GB352755A
GB352755A GB2267730A GB2267730A GB352755A GB 352755 A GB352755 A GB 352755A GB 2267730 A GB2267730 A GB 2267730A GB 2267730 A GB2267730 A GB 2267730A GB 352755 A GB352755 A GB 352755A
Authority
GB
United Kingdom
Prior art keywords
casing
graduations
window
openings
roller
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
GB2267730A
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.)
OTTO EDWARD SODERMAN
Original Assignee
OTTO EDWARD SODERMAN
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 OTTO EDWARD SODERMAN filed Critical OTTO EDWARD SODERMAN
Priority to GB2267730A priority Critical patent/GB352755A/en
Priority to FR699926D priority patent/FR699926A/en
Publication of GB352755A publication Critical patent/GB352755A/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
    • B43L7/00—Straightedges
    • B43L7/04—Straightedges with rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)

Abstract

352,755. Parallel rulers. SODERMAN, O. E., 235, East 40th Street, and NELSON, A. R., 2090, Bryant Avenue, both in New York, U.S.A. July 28, 1930, No. 22677. [Class 97 (iii).] In a parallel ruler comprising a casing enclosing a rubber covered roller marked with graduations adapted to be read through an opening or openings in the casing, the openings are provided with indicators with which the graduations are adapted to register. In the form shown, the upper part 12 of the casing 10 has curved sides 13 forming fingerrests and merging into the scales 14, 15. The roller 19 is mounted in endplates 20, 21 by screws 22 and carries graduations 26 adapted to be viewed through a window 27 in the casing. A wire 28 stretched across the window is provided as an indicator.
GB2267730A 1930-07-28 1930-07-28 Improvements in drafting instruments Expired GB352755A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2267730A GB352755A (en) 1930-07-28 1930-07-28 Improvements in drafting instruments
FR699926D FR699926A (en) 1930-07-28 1930-08-01 Instrument for drawing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2267730A GB352755A (en) 1930-07-28 1930-07-28 Improvements in drafting instruments

Publications (1)

Publication Number Publication Date
GB352755A true GB352755A (en) 1931-07-16

Family

ID=10183313

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2267730A Expired GB352755A (en) 1930-07-28 1930-07-28 Improvements in drafting instruments

Country Status (2)

Country Link
FR (1) FR699926A (en)
GB (1) GB352755A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789355A (en) * 1951-07-28 1957-04-23 Priess Hans Parallel ruler fitted with rollers
US4283861A (en) * 1979-11-16 1981-08-18 Timmis William W Plotting device
GB2213947A (en) * 1987-12-23 1989-08-23 Keith Wah Chan Drawing instrument

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2645076A1 (en) * 1989-03-30 1990-10-05 Rouault Jean Claude Graduated ruler with cylinder essentially for drawing parallel and perpendicular lines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789355A (en) * 1951-07-28 1957-04-23 Priess Hans Parallel ruler fitted with rollers
US4283861A (en) * 1979-11-16 1981-08-18 Timmis William W Plotting device
GB2213947A (en) * 1987-12-23 1989-08-23 Keith Wah Chan Drawing instrument

Also Published As

Publication number Publication date
FR699926A (en) 1931-02-21

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