Abstract: A selectively removable block and pusher assembly is provided for a feed chain comprising a plurality of links. At least some of the links are provided with a pair of parallel spaced pins extending transversely therefrom from which the block and pusher assembly is removable. Each block and pusher assembly comprises a block and a pusher removably attached to the block. The block includes a first pair of parallel, spaced bores extending therethrough parallel to its transverse axis for receiving the pins extending from the links, and a retaining member positioned in the block for releasably retaining circumferential grooves formed adjacent the free ends of the pins. The retaining member comprises a flexible and resilient U-shaped spring clip having a pair of spaced legs received in a second pair of spaced bores in the block and an intermediate portion which releasably retains the circumferential grooves in the pins.

Abstract: A bonded unitized envelope stack, manufacturing apparatus, and manufacturing method are provided in which envelopes in a stack are inter-connected by application of two spots of adhesive on the front panel of each envelope to engage the lower panel of the next above envelope. In one embodiment of the present invention, a conventional folding machine including a seal folder flap trap is modified to enable the application of the two spots of adhesive on the front panel of each envelope, and to produce bonded envelope stacks having a given fixed quantity of envelopes. When an envelope enters the seal folder flap trap, a photocell detects and triggers one counter of a dual counter system. A first counter increments each time an envelope enters the trap, until a count termed "preset 1" is reached. When "preset 1" is reached by the first counter, the glue applicator is deactivated. A second counter is then incremented.

Abstract: Method for forming an envelope having a tear strip or a tear-off flap portion for aiding in opening the envelope, comprising the steps of providing an envelope blank formed of a material capable of being weakened by the application of ultrasonic frequencies, forming the blank into a finished envelope, and applying ultrasonic energy to the finished envelope to form either a pair of closely-spaced, elongate distress lines or a single, straight distress line at which the fibers forming the material are weakened, thus defining a tear strip or a tear-off flap portion capable of manual separation form the remainder of the envelope. An envelope formed according to the above method comprises a body portion having a front panel, a back panel, and a seal flap extending outwardly from and formed integrally with a side of the front panel.

Abstract: A two-way reusable envelope useful for commercial mass-mailings is disclosed. The envelope includes a window aligned along the bottom right-hand edge of the front envelope panel, thereby enabling standard Postal Service zip code bar code markings to be visible during both trips of the two-way envelope. The envelope additionally includes a two-portion closure flap which enables Facing Identification Marks and appropriate postage to be visible from the front of the envelope only during one trip as appropriate.

Abstract: A modular electrical conductor system for electrical wiring including one or more discrete elongated generally rectilinear track or carrier members and a plurality of modular electrical elements which are selectively connectable with the carrier members to establish a selected electrical circuit, the various carrier members and modular elements having preassembled electrical conductors carried therein such that ends of the conductors are adapted for mating electrical connection while being continually shielded from contact by an installer.

Abstract: An improved method and apparatus for use in photometric testing of high intensity discharge lamps and luminaires is disclosed. The improved apparatus includes the creation of a mock high intensity discharge lamp having an incandescent emitting element replacing the arc plasma of the subject high intensity discharge lamp while carefully duplicating all other structural and electrical details of the lamp. The improved method incorporates the use of the mock high intensity discharge lamp to obtain accurate testing of the photometric qualities of the regular high intensity discharge lamp.

Abstract: An envelope forming machine includes frame means supporting envelope blank feed means for feeding envelope blanks from an upstream end serially past aligner means, a printer transfer roller positioned adjacently above selectively operable printer means, scoring means and folding means to an envelope delivery station, with a release paper patch applying means being positioned above the transfer roller to apply a patch of release paper to adhesive on a flap of each envelope as each envelope flap passes over the printer transfer roller which serves as a backup roller against the flap during the application of the patch of release paper to the envelope flap.

Abstract: An improved flood lighting fixture for a horizontally mounted HID lamp is disclosed. Relamping is accomplished by removing an access cover to expose an access opening, pivoting a reflector to a relamping position, exchanging the lamp through the access opening, pivoting the reflector back to its normal position and replacing the access cover.

Abstract: A stiff rectangular panel is placed centrally on an adhesive coated rectangular sheet of covering material with marginal edge portions of the sheet extending beyond the panel edges. The panel and sheet are conveyed on a first pass through a roller press and on such pass a leading edge portion of the sheet is engaged by weighted pivoted folding plate segments which fold or turn the edge portion of the sheet upwardly and around the leading edge of the panel and down onto the top face of the panel where the tack of the adhesive holds the folded edge portion of the covering sheet temporarily in place. Immediately following this, a stationary stiff brush engages the folded edge portion of the sheet and presses it tightly against the top face of the panel while the brush bristles simultaneously tuck the opposite end portions of the folded sheet snugly against the advancing longitudinal edges of the panel.

Abstract: A device for mounting and supplying electrical power to a luminaire. The device includes two connectors mounted on opposite sides of a housing which is mounted on the luminaire. The connectors on the device are wired to electrically interconnect two cables and a lighting circuit in the luminaire. Power is applied from one cable through the device to the luminaire and to the other cable which supplies power to another luminaire. A bracket on the top of the housing for mounting the luminaire in a building structure is adjustable in a direction extending linearly between the connectors to compensate for fixture balance and the weight of the cables connected to the device.

Abstract: A device for mounting and supplying electrical power to a luminaire. The device includes three connectors mounted in a housing. The connectors on the device electrically interconnect two cables and a lighting circuit in the luminaire. Power is applied from one cable through the device to the luminaire and to the other cable which supplies power to another luminaire. A bracket on the top of the housing for mounting the device to a building structure is adjustable to compensate for fixture balance and the weight of the cables connected to the device. When the luminaire is releasably attached to the device, one of the connectors on the device engages a mating connector on the luminaire for energizing the lighting circuit. The luminaire can be detached from the device without interrupting power to other luminaires in the same circuit.