Geometrical instruments – Scriber – Curved surface
Patent
1974-02-01
1976-11-02
Aegerter, Richard E.
Geometrical instruments
Scriber
Curved surface
33 26, 118503, B43L 1300
Patent
active
039888347
ABSTRACT:
Apparatus for marking eggs comprising parallel upstanding brace members fixed to a horizontal base; a rotatable element rotating in one of said brace members and operable to engage one end of an egg; another member yieldably urged against another end of the egg and operable to allow rotation of the egg with respect to the end of that member; a disc member fixed to said rotatable member; apertures near the peripheral edge of the disc member operable to pass over a corresponding aperture in said first brace member; a pin operable to pass through one of the apertures in said disc member therethrough into said corresponding aperture in said first brace member; a metal straight edge guide above and substantially parallel to the axis of the egg and substantially rigid; a sliding member operable to slide on said straight edge member along a line parallel to the central axis of the egg; an aperture vertically deposed in said slide member operable to hold a pencil; and a weight member having a central axis and an aperture along said central axis for engaging the top portion of the pencil; whereby pencilled marks on said egg can be selectively made by movement of the slide member and by movement of said disc with fixed positions determined by passing the pin through the disc to the corresponding aperture in the first mentioned upstanding brace member.
REFERENCES:
patent: 236432 (1881-01-01), Higbee
patent: 801795 (1905-10-01), Koelsch et al.
patent: 1763885 (1930-06-01), Fisher
patent: 1768615 (1930-07-01), Lane
patent: 1832255 (1931-11-01), Springstead
patent: 1982304 (1934-11-01), Holden
patent: 2270177 (1942-01-01), Vawryk
patent: 2727325 (1955-12-01), Jurinic
patent: 3358644 (1967-12-01), Greene
patent: 3484797 (1969-12-01), Barnett et al.
Aegerter Richard E.
Maxon David A.
Thaler Michael H.
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