GB179059A - Improvements in or relating to instruments for drawing parallel and radial lines - Google Patents

Improvements in or relating to instruments for drawing parallel and radial lines

Info

Publication number
GB179059A
GB179059A GB1029221A GB1029221A GB179059A GB 179059 A GB179059 A GB 179059A GB 1029221 A GB1029221 A GB 1029221A GB 1029221 A GB1029221 A GB 1029221A GB 179059 A GB179059 A GB 179059A
Authority
GB
United Kingdom
Prior art keywords
rollers
ruler
roller
rulers
needles
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
GB1029221A
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 GB1029221A priority Critical patent/GB179059A/en
Publication of GB179059A publication Critical patent/GB179059A/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)
  • Drawing Aids And Blackboards (AREA)

Abstract

179,059. Harter, G. April 7, 1920. Rulers; centrolineads.- Consists of a parallel or radial ruler comprising a straight-edge or body 2 provided with bearings for a spindle on which are mounted rollers 1, the rollers being provided with peripheral needlelike points to grip the paper, as described in Specification 164,065. As shown in Figs. 5 and 7, each roller is composed of rings 12, 13 filled in with cement &c. 14 in which the needles 11 are embedded. One or both of the rings are made cylindrical to bear on the paper, or a separate bearing-roller independent of the wheel may be mounted in close proximity to it. One or more circles of needles may be provided on each wheel. Fig. 8 shows a ruler for drawing radial lines, the rollers 1, 1<a> being mounted on separate spindles which are connected by gearing 22 - - - - 28. the gear ratio being variable by moving the idler 27. The roller 1<a> is splined on its spindle 21 so as to be axially adjustable thereon. This device may be adapted for describing circular arcs by the attachment of a pencil point or pen. Rollers as described may be used in rulers having two sets of rollers at an angle to each other and with those having means for indicating the displacement and/or locking means for preventing displacement. A straight edge may be adjustably secured to the body of the ruler.
GB1029221A 1921-04-07 1921-04-07 Improvements in or relating to instruments for drawing parallel and radial lines Expired GB179059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1029221A GB179059A (en) 1921-04-07 1921-04-07 Improvements in or relating to instruments for drawing parallel and radial lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1029221A GB179059A (en) 1921-04-07 1921-04-07 Improvements in or relating to instruments for drawing parallel and radial lines

Publications (1)

Publication Number Publication Date
GB179059A true GB179059A (en) 1922-05-04

Family

ID=9965171

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1029221A Expired GB179059A (en) 1921-04-07 1921-04-07 Improvements in or relating to instruments for drawing parallel and radial lines

Country Status (1)

Country Link
GB (1) GB179059A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810197A (en) * 1954-07-01 1957-10-22 Robert C Sherry Drafting instruments
US4823475A (en) * 1988-03-21 1989-04-25 Hoegh Poul E Drafting device
US4914824A (en) * 1989-05-04 1990-04-10 Lee Otis M Parallel rule
USRE33654E (en) * 1988-03-21 1991-08-06 Drafting device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810197A (en) * 1954-07-01 1957-10-22 Robert C Sherry Drafting instruments
US4823475A (en) * 1988-03-21 1989-04-25 Hoegh Poul E Drafting device
WO1989009139A1 (en) * 1988-03-21 1989-10-05 Hoegh Poul E Drafting device
USRE33654E (en) * 1988-03-21 1991-08-06 Drafting device
GB2245979A (en) * 1988-03-21 1992-01-15 Poul E Hoegh Drafting device
GB2245979B (en) * 1988-03-21 1992-12-02 Poul E Hoegh Drafting device
US4914824A (en) * 1989-05-04 1990-04-10 Lee Otis M Parallel rule

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