Recorders – Markers and/or driving means therefor – Stylus feature
Patent
1974-03-28
1976-02-17
Hartary, Joseph W.
Recorders
Markers and/or driving means therefor
Stylus feature
33 18R, 118 7, 118 76, G01D 1524
Patent
active
039394824
ABSTRACT:
An apparatus that may be used in an automatic drawing system for recording, for example, with pencil lead or ink. In one embodiment using a pencil lead, a push rod connects to a piston which is slideable in a cylinder which has a retaining tube for the lead extending therefrom. Air pressure may be selectively applied to the piston for urging the rod against the lead which is in turn contacting the medium for recording thereon. Retraction of the lead from contact with the medium is performed by a mechanism that moves the cylinder and retaining tube toward the medium after the air pressure has been removed so that the lead slides into the tube, and thereafter moves the cylinder and tube away from the medium to retract the lead from contact with the medium. Detection means are also provided to detect the expending of the lead and a multi-lead holder is indexed so that a new piece of lead is registered with the push rod.
REFERENCES:
patent: 2316906 (1943-04-01), Wait
patent: 2361049 (1944-10-01), Oakes
patent: 2375267 (1945-05-01), Wise
patent: 2484298 (1949-10-01), Krahulec
patent: 2811101 (1957-10-01), Devol
patent: 2865330 (1958-12-01), Swank
patent: 3058220 (1962-10-01), Eary
patent: 3145070 (1964-08-01), Miller et al.
patent: 3293658 (1966-12-01), Sicking
patent: 3578897 (1971-05-01), Stock
patent: 3643334 (1972-02-01), Gelb et al.
patent: 3857525 (1974-12-01), Gerber et al.
LandOfFree
Writing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Writing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Writing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1749435