Marking apparatus
OwnerJohn E. Hannainventor
Life of this patent
Estimating the term…
Abstract
A spool of pervious material impregnated with a marking medium, such as ink, is carried within a drum. The material extends from the spool through a passageway in the drum, such a segment of the material extends longitudinally along the exterior surface of the drum. As the drum is rolled along a surface, marks are made at predetermined, regularly spaced intervals. The supply of marking medium is replenished by drawing a successive segment of material from the spool.
Claims12
An apparatus for making marks at predetermined intervals by periodically impressing a marking medium upon a layout surface and especially adapted for convenient replenishment of the marking medium, said apparatus comprising:
- a. a drum having a cylindrical outer surface and rollable along said layout surface;
- b. an elongate marking member carrying said marking medium;
- c. engagement means releasably securing said marking member to said drum, at least a segment of said marking member extending substantially longitudinally along the outer surface of said drum for contact with said layout surface;
- and
- d. storage means within said drum for carrying a replenishment supply of said marking member and said marking medium.
Dependencies are inferred from the claim text.