Geometrical instruments – Area integrators – Electrical
Patent
1978-05-01
1979-05-22
Haroian, Harry N.
Geometrical instruments
Area integrators
Electrical
G01B 520
Patent
active
041551745
ABSTRACT:
An improved pattern marker for producing patterns of irregular surfaces or articles is provided which greatly facilitates pattern making in connection with such things as seat cushion covers, other upholstery items, or irregular wall configurations. The pattern maker preferably includes a central frame supporting a plurality of laterally shiftable, pivotal, outwardly extending, axially adjustable rods. Elongated web means (preferably in the form of a pair of separate webs each secured to the frame and having separate pickup reels) is slidably carried by the outermost ends of the rods and defines a substantially enclosed region. A marking instrument is also provided and includes a web-engaging roller, so that a tracing of the final web pattern can be produced. In use, the pattern maker is placed over a seat cushion or the like, and the respective rods are shifted laterally and pivotally within the frame, and longitudinally relative to the latter, so that the webs carried by the rods are correspondingly shifted to approximate the desired shape. The webs are then drawn up by the takeup reels in order to closely follow the outline of the cushion. The pattern maker is then placed on a sheet of pattern paper, and an outline of the web is traced onto the paper to complete the pattern.
REFERENCES:
patent: 923875 (1909-06-01), McDonald
patent: 1141640 (1915-06-01), Huguenin
patent: 1579702 (1926-04-01), Gottschalk
patent: 2101478 (1937-12-01), Reich
patent: 2222407 (1940-11-01), Gobel
patent: 2285582 (1942-06-01), Human
patent: 2519508 (1950-08-01), Schnorbus
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