GB839843A - Improvements in templets - Google Patents

Improvements in templets

Info

Publication number
GB839843A
GB839843A GB14405/56A GB1440556A GB839843A GB 839843 A GB839843 A GB 839843A GB 14405/56 A GB14405/56 A GB 14405/56A GB 1440556 A GB1440556 A GB 1440556A GB 839843 A GB839843 A GB 839843A
Authority
GB
United Kingdom
Prior art keywords
curves
templates
template
profile
curvature
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
GB14405/56A
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 GB839843A publication Critical patent/GB839843A/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

Abstract

839,843. Drawing instruments. JAMIN, R. A. May 9, 1956 [May 11, 1955], No. 14405/56. Drawings to Specification. Class 97(3) [Also in Groups XXII and XXIII] In a set of templates each has a curved profile which is one of a family of curves defined by a relatively simple relation between the arc length and curvature or radius of curvature, each having indicated on it the informaton required to enable the user to determine such characteristics of the profile as will allow another template of the set to be readily selected and located adjacent the first template to form a continuous curve. The profile curves of the family may be Cornu curves or involutes of circles. The templates are used for plotting or drawing curves. In one embodiment the indications are the values of the parameters which determine the two ends of the arc. The templates may bear two graduations one on each side of the template the one being of the parametric kind and the other in units of length, Two or more reference marks may be provided such as drilled, spaced holes.
GB14405/56A 1955-05-11 1956-05-09 Improvements in templets Expired GB839843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR839843X 1955-05-11

Publications (1)

Publication Number Publication Date
GB839843A true GB839843A (en) 1960-06-29

Family

ID=9299731

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14405/56A Expired GB839843A (en) 1955-05-11 1956-05-09 Improvements in templets

Country Status (1)

Country Link
GB (1) GB839843A (en)

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