Geometrical instruments – Scriber – Curved line
Patent
1995-02-06
1996-06-18
Will, Thomas B.
Geometrical instruments
Scriber
Curved line
33 27032, 83879, 30310, B43L 11055, B43L 904
Patent
active
055265731
ABSTRACT:
A device for circumscribing selectively both circles and also ellipses of variable proportions includes a housing in which is rotatably mounted an armature. The armature is constrained to move on two axes disposed at right angles to one another, so as to enable elliptical shapes to be generated. One such axis is provided by a rectilinear channel in the base of the device, in which is engaged a follower operatively attached to the armature; the other axis is provided by a rectilinear slot formed through the cover of the device. A hub is engaged in the cover slot and is assembled with the armature; it can be moved to any selected position along a rectilinear axis of the armature without disassembly, and can be secured in position by tightening of a clamping mechanism. In one position the axes of rotation of the hub and the armature are aligned, to thereby cause the device to circumscribe a circle; in other positions the axes are offset, thereby conditioning the device for circumscribing ellipses.
REFERENCES:
patent: 532155 (1895-01-01), Hottinger
patent: 695857 (1902-03-01), Bonner
patent: 696046 (1902-03-01), Hotchkiss
patent: 830784 (1906-09-01), Hanes et al.
patent: 884762 (1908-04-01), Risting et al.
patent: 905107 (1908-11-01), Schreiber
patent: 2039584 (1936-05-01), Dixon
patent: 2458208 (1949-01-01), Ruger
patent: 2512786 (1950-06-01), Borg
patent: 2595417 (1952-05-01), Scott
patent: 2762126 (1956-09-01), Shaw
patent: 4112793 (1978-09-01), Pierce
patent: 4244106 (1981-01-01), Pierce
patent: 4567927 (1986-02-01), Plamann
patent: 5099727 (1992-03-01), Kazyrski et al.
patent: 5233748 (1993-08-01), Logan et al.
patent: 5430946 (1995-07-01), Peters et al.
Kozyrski Vincent T.
Peters Alan R.
Dorman Ira S.
The Fletcher-Terry Company
Will Thomas B.
LandOfFree
Device for circumscribing circles and ellipses does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for circumscribing circles and ellipses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for circumscribing circles and ellipses will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-215431