Abstract: A series of pumps for precise metering of ink to all zones of a web press. One set of the ink pumps is operated by a set of motors, one motor for every two zones. The motors are reversible, preferably with a toothed belt driving each pump. The other units include one motor for each pump, with the motor driving a shaft which drives a link arm, the link arm driving a pivot shaft with a variable stroke, ranging from zero to a full output. The link arms are driven individually or as a group, and each has its own stroke. In one case, the pivot shafts are operated by link arms which can be in or out of phase with each other. In another case, an eccentric on the drive shaft can be adjusted to produce a variable stroke of the link arms and the pivot shafts.

Abstract: An inking system for an offset printing press having a stationary portion and a movable portion that is movable toward and away from a roller. A plurality of hinge pins form a pivot axis between the stationary and movable portions. Each of the hinge pins having at least one hollow end portion communicating axially with one of the stationary and movable portions permitting ink flow. Each of the hinge pins also having a radial passage for ink, whereby the ink may pass from the stationary portion to the movable portion, and whereby the ink may be supplied to the movable portion during change of the relative positions of the stationary and movable portions.

Abstract: An apparatus and method for feeding U.V.-curable inks without causing them to cure prematurely. The apparatus includes plural Moineau style pumps each with an elastomeric stator and a rigid rotor. The pumps are driven by electric motors and flexible drive shafts enabling the stator and rotor to be slight offset from one another. The ink is fed to all of the pumps at the same time from a single trough with baffles therein.

Abstract: A series of pumps for precise metering of ink to all zones of a web press. One set of the ink pumps is operated by a set of motors, one motor for every two zones. The motors are reversible, preferably with a toothed belt driving each pump. The other units include one motor for each pump, with the motor driving a shaft which drives a link arm, the link arm driving a pivot shaft with a variable stroke, ranging from zero to a full output. The link arms are driven individually or as a group, and each has its own stroke. In one case, the pivot shafts are operated by link arms which can be in or out of phase with each other. In another case, an eccentric on the drive shaft can be adjusted to produce a variable stroke of the link arms and the pivot shafts.

Abstract: An inking system for an offset printing press having a stationary portion and a movable portion that is movable toward and away from a roller. A plurality of hinge pins form a pivot axis between the stationary and movable portions. Each of the hinge pins having at least one hollow end portion communicating axially with one of the stationary and movable portions permitting ink flow. Each of the hinge pins also having a radial passage for ink, whereby the ink may pass from the stationary portion to the movable portion, and whereby the ink may be supplied to the movable portion during change of the relative positions of the stationary and movable portions.

Abstract: A printing press having a number of identical inking systems for delivering ink to said press. The individual inking systems comprises an ink source including an ink reservoir held under a positive pressure. The ink travels from the manifold through a valve mechanism and to one or more piston mechanisms which undergo rotary and reciprocating motion, and thence to the ink outlets. Two piston and single-piston mechanisms are described.

Abstract: An inking system for alternately supplying ink in two overall widths to a web press. The system includes ink pumps, a series of outlet passages for the ink pumps, a set of intermediate passages connected to the ink pumps, two outlet passages for each of its intermediate passages and first and second supply passages for an inking roller. There is an ink flow control that selects either a first or a second array of supply passages, thereby supplying ink in a wider width or a narrower width. One ink flow control, preferably, consists of two flat apertured plates and the other ink flow control comprises a piston and cylinder arrangement in a block having plural passages.

Abstract: An apparatus for inking the fountain roller of a press. A main body has a longitudinal extent substantially equal to that of the fountain roller, a blade holder disposed beneath and attached to the main body. The main body and blade holder combine to provide several ink channels of narrow width, with the channels terminating in spreader portions. There is a blade in the blade holder which extends to a position adjacent but not touching the fountain roller.

Abstract: A valveless positive displacement pump having pistons that undergo both rotating and reciprocating motion. The assembly comprises a radially outer, ported first cylinder with an axially outer, closed off end, a radially intermediate combination element having outer surfaces serving as a first piston relative to the main cylinder and inner surfaces defining a cylinder for a second piston. The pistons are concentrically arranged, and each reciprocates and rotates within its own cylinder. The piston part of the intermediate element includes a first chordwise relief adjacent its axially inner end and a second chordwise relief in the middle of its shank portion. An access port extends through a wall of the second relief into the interior of the second element. The axially outer ends of first and second pistons each include means for connection to a drive unit with a rotational axis that intersects but is offset from the rotational and reciprocating pistons.

Abstract: A page pack for a printing press wherein the housing for the ink pump and motor assemblies also serves as a heat sink for the heat generated by the motor drive units. The housing comprises a body for receiving a plurality of positive displacement ink pumps each comprising a pump cylinder and at least one pump piston, with all such bores being arranged substantially parallel to each other and lying in a given plane. The housing includes openings for accommodating pump drive motors with their output shafts arranged so as to lie parallel to each other and in a plane slightly offset from an intersecting plane in which the pumps are positioned.

Abstract: A smoke alarm for responding to alarm conditions using electrical circuitry having a horn coil placed in series with rectifier circuitry. The series connection of the horn coil with the rectifier circuitry enables suppression of line transients and also eliminates the need for additional transient suppression circuits. An alarm condition causes generation of a short circuit which activates the horn and causes current to pass through the horn; but the high impedance of the horn coil in the rectifier circuit limits the amount of current drawn to low levels for more efficient and safe operation of the smoke alarm. Further, the current flow in the horn will be substantially AC as a result of the series connection of the horn and rectifier circuitry, thereby eliminating the need for an alternate reset current path.