US PATENT SUBCLASS 226 / 52
MEANS TO ENGAGE LONGITUDINALLY SPACED MODIFICATIONS IN MATERIAL

Current as of: June, 1999
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226 /   HD   ADVANCING MATERIAL OF INDETERMINATE LENGTH

52MEANS TO ENGAGE LONGITUDINALLY SPACED MODIFICATIONS IN MATERIAL {8}
53  DF  .~> Such means produces the modifications
54  DF  .~> Alternately selectable prongs
55  DF  .~> Prong operable intermittently to prevent longitudinal material movement (e.g., registration pins) {3}
59  DF  .~> With additional means to restrict material movement {1}
62  DF  .~> Reciprocating or oscillating claw or finger {6}
74  DF  .~> Pins on flexible belt or chain {1}
76  DF  .~> Rotating sprocket (e.g., pin-wheel) {6}
87  DF  .~> Including detail of prong shape or construction

DEFINITION

Classification: 226/52

(under the class definition) Device including means

(hereafter referred to, in the definitions of the indented subclasses, as a prong) to contact variations of indeterminate length* material, said variations recurring along the length-direction of said material.

(1) Note. In original patents placed in this and indented subclasses, the variations described above are usually perforations, holes, or notches in web material (the most common example being motion picture film), and the means contacting said variations comprises one or more claws, sprocket wheels, pin-belts, or other toothed members, the teeth of which enter into the perforations successively and are moved to feed the perforated web. For simplicity and brevity, the term "prong" (or "prongs") will be used hereafter where appropriate to refer generally to a toothed member described above.

(2) Note. To be placed as an original in this or indented subclasses, a patent must (1) disclose the material as having a modified surface such as perforations, and (2) claim the prong (or prongs) or equivalent term (for an exemplary listing of which, see (1) Note above). A patent which claims a prong or its equivalent will be originally placed into these subclasses only if it is clear from the disclosure that material is moved (or stopped, as in subclasses 55+) thereby. However, since material such as perforated film is sometimes handled and fed as ordinary strand or web without using such perforations (e.g., motion picture film passing a sound head by friction drive means), mere recitation of perforated film will not of itself warrant original placement into these subclasses of a patent including such recitation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

6, for analogous method.

116, for disclosure wherein a perforation is used to effect discontinuity in the contact between the feeder and the material, thus stopping movement of the material. SEE OR SEARCH CLASS

76, Metal Tools and Implements, Making,

35, for similar apparatus in a saw making machine.

83, Cutting,

423, for similar apparatus combined with cutting means.

242, Winding, Tensioning, or Guiding, for more than a nominal supply or take-up coil structure (e.g., a support for such a coil, a cooperative relationship between a tension or exhaust detector and reel driving or reel stopping means, etc.),

354, for a particular linear feeder* (e.g., capstan or sprocket, etc.) spaced from the supply or take-up coil.

352, Optics: Motion Pictures,

191+, for motion picture drive apparatus with claw film feed.

400, Typewriting Machines,

248.3, for similar apparatus combined with typewriting means.