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GB144157A - Improvements relating to ellipsographs and to apparatus for cutting elliptical holes - Google Patents

Improvements relating to ellipsographs and to apparatus for cutting elliptical holes

Info

Publication number
GB144157A
GB144157A GB2228119A GB2228119A GB144157A GB 144157 A GB144157 A GB 144157A GB 2228119 A GB2228119 A GB 2228119A GB 2228119 A GB2228119 A GB 2228119A GB 144157 A GB144157 A GB 144157A
Authority
GB
United Kingdom
Prior art keywords
arm
ellipsographs
pivoted
slot
improvements relating
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
GB2228119A
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 GB2228119A priority Critical patent/GB144157A/en
Publication of GB144157A publication Critical patent/GB144157A/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
    • B43L11/00—Non-circular-curve-drawing instruments
    • B43L11/02—Non-circular-curve-drawing instruments for drawing conic sections
    • B43L11/04—Non-circular-curve-drawing instruments for drawing conic sections for drawing ellipses

Landscapes

  • Knives (AREA)

Abstract

144,157. Hartley, G. E. Sept. 10, 1919. Ellipsographs.-The trammel plate f is secured to an arm e having extensions e<1> pivoted at c so that the plate can be turned up for setting the parts and turned down for use, as shown in full and dotted lines respectively in Fig. 1. The scribing-arm n is pivoted on the block m, which slides in the slot g, and has a slot n<2> through which passes the adjustable block l sliding in the slot h. The arm n also carries a guide-member n<4> through which a graduated arm o can slide The arm o has an upturned end o' in which is mounted a pivot-pin o<2> on which is pivoted a lever arm p carrying a pen &c. p<1>.
GB2228119A 1919-09-10 1919-09-10 Improvements relating to ellipsographs and to apparatus for cutting elliptical holes Expired GB144157A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2228119A GB144157A (en) 1919-09-10 1919-09-10 Improvements relating to ellipsographs and to apparatus for cutting elliptical holes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2228119A GB144157A (en) 1919-09-10 1919-09-10 Improvements relating to ellipsographs and to apparatus for cutting elliptical holes

Publications (1)

Publication Number Publication Date
GB144157A true GB144157A (en) 1920-06-10

Family

ID=10176834

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2228119A Expired GB144157A (en) 1919-09-10 1919-09-10 Improvements relating to ellipsographs and to apparatus for cutting elliptical holes

Country Status (1)

Country Link
GB (1) GB144157A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494557A (en) * 1944-05-16 1950-01-17 Haden R Irick Adjustable ellipse compass
US2841873A (en) * 1954-04-06 1958-07-08 Leroy V Bell Ellipsograph

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2494557A (en) * 1944-05-16 1950-01-17 Haden R Irick Adjustable ellipse compass
US2841873A (en) * 1954-04-06 1958-07-08 Leroy V Bell Ellipsograph

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