US PATENT SUBCLASS 271 / 157
.~.~.~ With means to replenish pack or retract advancer platform

Current as of: June, 1999
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271 /   HD   SHEET FEEDING OR DELIVERING

8.1  DF  FEEDING {8}
145  DF  .~ Pack holders {7}
147  DF  .~.~ Advancer {5}
157.~.~.~ With means to replenish pack or retract advancer platform {1}
158  DF  .~.~.~.~> Using plural platforms during continuous operation of feeder {1}

DEFINITION

Classification: 271/157

(under subclass 147) Device provided with means to cause or to permit a stack of sheets to be placed or replaced in position for feeding, or provided with a support for a stack of sheets, which support normally urges the stack toward a sheet-removal position but is provided with means to withdraw said support away from the sheet-removal position.

(1) Note. The title and definition of this subclass have been written to accommodate the various ways in which the patents of this and indented subclasses have been disclosed and claimed. The intent of these subclasses is to provide a locus for patents disclosing "continuous" feeders, that is, devices wherein sheets may be individually separated from the top of a stack while a new stack of sheets is added to the bottom of the stack. The claims of some of the patents sometimes recite the replenishment in terms of function and sometimes recite the structure inherently capable of performing the function, but the intent is the same.

(2) Note. Due to the nature of the arrangement of sheets on edge, a device feeding sheets from an on-edge advancer is inherently capable of having the stack of sheets replenished. Search in the referenced subclass below for structure similar to that of this subclass is sometimes advisable.

SEE OR SEARCH THIS CLASS, SUBCLASS:

149, for structure similar to that of this subclass (157),

and see (2) Note above.