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
GB2985964A
Inventor
Peter Arthur Lawson
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.)
Helix (universal) Co Ltd
Original Assignee
Helix (universal) Co Ltd
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 Helix (universal) Co LtdfiledCriticalHelix (universal) Co Ltd
Priority to GB2985964ApriorityCriticalpatent/GB1052767A/en
Publication of GB1052767ApublicationCriticalpatent/GB1052767A/en
B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
B43L9/00—Circular curve-drawing or like instruments
B43L9/16—Features common to compasses, dividers, and callipers
Abstract
1,052,767. Mathematical drawing-appliances. HELIX (UNIVERSAL) CO. Ltd. April 20, 1965 [July 24, 1964], No. 29859/64. Heading B6P. Compasses and dividers.-The legs 1, 2 carrying a spike 7 and pencil-holder 8, or each carrying a spike, are joined by a pivot screw or pin 5 passing through apertures 4 in upper extensions 3a, of circular form, the upper portion of each arm being cranked so as to be offset away from that of the other, but being of the same thickness as the rest of the arm. The arms are of mild steel. Alternatively, only one arm may be cranked. A finger-piece 9 is carried on a U- member 10.
GB2985964A1964-07-241964-07-24Improvements in drawing compasses and dividers
ExpiredGB1052767A
(en)
Some improvements in the mechanisms of activation and simultaneous retention of closures (Machine-translation by Google Translate, not legally binding)
Improved beater with reinforced profile in its angles and retention braces for doors and windows (Machine-translation by Google Translate, not legally binding)