Improvements in or relating to on-off recorders

Abstract

Abstract 729,663. Pens for recording instruments. ROBINSON & PARTNERS, Ltd., F. C., and ROBINSON, F. C. Nov. 16, 1953 [Sept. 3, 1952], No. 22177/52. Class 146(3). [Also in Group XIX] Each pen 15 of an on-off recorder associated with a plurality of machines (see Group XIX) is of sheet metal, having a "point" one sixteenth of an inch square and each pen is rivetted to one end of a spring 38 whose other end is riveted to the armature 39 of an associated electromagnet 31 for controlling its movement to and from a heat sensitive record sheet. Each pen is electrically heated for recording through resistance wire 44 wound on a sheet of mica 43 between two further sheets of mica 42, 45 all held to the pen by a sleeve 46 of aluminium or other metal to which one end of the wire 44 is connected the other end being connected to a copper lead wire 48. A mica washer 49 thermally insulates the pen from the spring 38.

Inventors

No inventors recorded.

Bibliographic Details