Disclosed is a sheet feeder device including means for supporting a generally vertical stack of sheets. The supporting means include endless belts having an upper belt run position to extend across the bottom of the stack of sheets. A stationary gate forming member is provided which is positioned above the upper run of the belts and adjacent the forward side of the stack to define a nip which forms a gap between the gate forming member and the upper run for permitting the lowermost sheet of the stack to pass forwardly from the stack through the nip. The gate forming member is a cylindrical roll defining a central axis and an outer peripheral surface which is concentric to the central axis. The roll has a groove extending axially along the length thereof. An elastomeric bar is disposed in the groove, and the bar has a coefficient of friction which is higher than that of the material of the roll. Also, the bar is sized so as to extend radially beyond the peripheral surface. This portion of the bar includes a rearwardly facing edge surface which extends generally along a tangent to the outer peripheral surface of the roll. In operation, the lowermost sheet is fed by the endless belts through the nip without engaging the bar and without significant frictional resistance, while the sheet immediately above the lowermost sheet engages the bar and is retarded in its advance by its engagement with the material of the bar.

Paper sheet feeding apparatus

A machine comprising a stack of cards, a stripping feeder for stripping the bottom card from the stack and moving a series of such cards with an intermittent motion to a series of feed rollers which convert such intermittent motion into a constant velocity and for spacing the cards one from another. A tape coated with magnetic material is laid on the surface of each card by a guiding device after the card has passed through the feed rollers and the combination is fed between a heated roller and a reaction roller which are driven synchronously with the cards. The heated roller is pressed against the cards at a constant pressure exerted by an air cylinder to seal a portion of the magnetic coating to each card. The tape, carrying the sealed cards, is driven, pulling the cards along a track, allowing for cooling time until they are stripped off the tape by a stripping station which deposits the completed cards upon a belt moving at right angles to the tape-card combination in such a way that one card overlaps another, allowing the operator to view for inspection that part of the card to which the magnetic material has been applied.

Machine for applying magnetic strips

Printed circuit printing machine

An adjustable guide member for maintaining a parallel relationship between the planar surface of a platen and the printing surface of an indicium, or printing, plate. The platen is normally spaced from, and is rockable in a vertical path toward, the printing plate to press mail matter to be printed, such as envelopes, against the printing plate to receive an impression.

Reciprocating platen printer with spring biased platen control arms

Card marking device

Feeding device for printing-machines.

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Feeding device for printing-machines.