Abstract: A feed hopper assembly particularly adapted for feeding particulate material which agglomerates has, end walls and side walls which define a storage chamber having a charging opening for the particulate material, and the side walls converge to form a discharge outlet for dispensing the particulate material. A pulsating diaphragm assembly including, an elastomeric member on the inner wall of the storage chamber, and pump means for causing the elastomeric member to expand the deflate. A transverse shelf or surface adjacent the discharge outlet can be provided for delivering the particulate material to a point of use. Bleed means can also be provided to bleed air from the pulsating diaphragm assembly in the event that pulsations terminate when the diaphragm assembly is in the expanded condition.

Abstract: The method of transporting an electrostatic strip wherein the strip on a supply roll is pulled from the supply roll which is normally freely rotatable and the strip having been pulled from the supply roll is returnable to the supply roll by driving the supply roll in reverse to rewind the electrostatic strip; the unspooling of the electrostatic strip from the supply roll is performed by a pair of feed rollers; after imaging the electrostatic strip, it is carried between a pair of longitudinally ribbed guides past a magnetic toner to an inspection station at which station it may be viewed and optionally severed from the remainder of the electrostatic strip, which remainder is returned toward the supply roll for neutralization, detoning, reimaging and refeeding to the viewing station, while the portion of the electrostatic strip at the viewing station is carried in a generally horizontal planar course to a fuser for making permanent the toned, unfused electrostatic image.

Abstract: A heat exchanger having an outer shell with an elongated, semi-circular fluid duct plate mounted in the shell. A tube bundle slidable between the duct plate and the shell is fixed at one end relative to the shell. The fluid inlet and outlet configuration, and transverse fluid flow pattern, are typical of those described in U.S. Pat. No. 3,532,160. The exterior of the tube bundle is partially covered with a shrouding to contain the fluid flow within the tube bundle by allowing the fluid to exit only through the outlet side. Sealing mechanisms running longitudinally between the shrouding and the upper duct plate, and between the shrouding and the shell, provide a seal which restricts the fluid flow to a transverse flow through the tube bundle. A seal between the supported end of the tube bundle and the shrouding confines the fluid flow in the bundle and allows for relative expansion of the shrouding and the bundle.

Abstract: A leader pin to securely hold the leading end of a strip for high speed unwinding wherein the end of a strip is inserted in a slot in a body and a keeper is inserted in the body embraced by the end of the strip; the keeper is provided with a resilient latch that is engageable with a channel on the body whereby the body and the keeper are strongly engaged together.

Abstract: A method and apparatus for separating particulate matter from a gas stream wherein dirty gas is moved first through a corona discharge zone, such as that provided by a plurality of rod-like electrodes each having a sharp-edged corona producing ribbon-like formation extending axially therealong, and then is moved through a plurality of mechanical filters of the cartridge type, each comprising a perforated, cylindrical, metal outer shell and an inner filter medium of foraminous dielectric material such as pleated paper. Each cartridge is closed at one end and open at the other from which cleaned gas flows out axially. The electrodes are located circumferentially of the filters with the filter and electrode longitudinal axes being substantially parallel.

Abstract: An electrostatic display, recall or print apparatus in which a magnetically toned latent electrostatic pattern or image on an electrostatic strip is inspected, and either advanced to a fusing station for being made permanent, or withdrawn to a detoning station for magnetic detoning, from which the strip may once more be advanced and reused for the application of a different electrostatic image and for retoning.

Abstract: The invention relates to a method of fastening electrical wire leads to each end of a ferromagnetic sleeve or core form in a manner whereby significantly greater bonding strength is provided between the leads and the core as compared to prior art methods. The core and wire leads are placed in a molding cavity into which molding material is injected so as to affirmatively fill the clearance between the lead ends and the core thereby resulting in a highly effective cementing of one to the other. The core body is hollow so that the molding material passes through each end to completely fill the central portion of the core. In this manner the central bore through the core body provides effective gating to the injected molding material. The ferromagnetic coil article so formed includes a molded flange on each of its ends which extend radially outward from the outer surface of the core body associated therewith.

Abstract: An electrostatic display, recall or print apparatus in which a latent electrostatic pattern or image is formed on a dielectric strip; the image is toned (made visible by dusting with an electrostatic powder) and is advanced to a display station where it is viewed; if the image is acceptable, the strip is advanced to a fusing station and made permanent; if the image is not acceptable, the strip is withdrawn, the electrostatic image is neutralized and the toner is removed.

Abstract: The invention relates to a method of fastening electrical wire leads to each end of a ferromagnetic sleeve or core form in a manner whereby significantly greater bonding strength is provided between the leads and the core as compared to prior art methods. The core and wire leads are placed in a molding cavity into which molding material is injected so as to affirmatively fill the clearance between the lead ends and the core thereby resulting in a highly effective cementing of one to the other. The core body is hollow so that the molding material passes through each end to completely fill the central portion of the core. In this manner the central bore through the core body provides effective gating to the injected molding material. The ferromagnetic coil article so formed includes a molded flange on each of its ends which extend radially outward from the outer surface of the core body associated therewith.

Abstract: Apparatus is provided for arranging a row of bundles, preferably tied or untied bundles of folded or unfolded corrugated boxes or blanks, into stacks which include a plurality of layers of one or more bundles. The apparatus includes a feeding conveyor for feeding a row of bundles to a loading conveyor. A worker is stationed at the loading conveyor and functions to arrange the bundles into a layer on the loading conveyor. The loading conveyor then operates to transfer the layer of bundles to a transfer station on a vertical conveyor. Alternatively, the worker can arrange the bundles directly at the transfer station.The vertical conveyor includes a plurality of carrier plates which each operate to lift a layer of bundles from the transfer station and transfer it to a delivery station on the other side of the vertical conveyor.

Abstract: A tool having an interchangeable insert includes a body with a recess for receiving the insert. The body is further provided with alignment means whereby the insert and body may be operatively positioned with respect to a work piece. A wedge positioned between the insert and the body forces the insert into operational contact with the alignment means. A step abuts a portion of the edge so as to force the wedge against the insert in substantial line contact therewith so as to prevent opposite surfaces of the body and insert from fully contacting the wedge in a manner which could result in frictional blocking, i.e. taper lock, and accordingly subsequent improper hang up of the wedge.

Abstract: A forming tool generally having a dove-tail shaped machine connector provided with an integral outwardly extending front support which in cooperation with the front surface of the tool is adapted to receive a forming insert. The front support is provided with a slot for receipt of locking wedges as to lock the insert in position with respect to the tool. The front support is positioned below the working edge of the insert and the tool is further provided with means for positioning the insert laterally with respect to the slot.

Abstract: A method and apparatus for separating particulate matter from a gas stream wherein dirty gas is moved through an electrostatic charging zone such as an electrostatic precipitator and then is moved through a filter of foraminous material such as a fabric filter of the bag type. The filter is in fluid communication with the charging zone and electrically insulated therefrom. Collected particulate material on surfaces of the charging zone or precipitator and on the filter is removed by introducing a controlled quantity of high pressure gas at predetermined times adjacent the outlet of the charging zone or precipitator and in a direction toward the inlet thereof in a manner inducing a substantial flow of the cleaned gas through the apparatus in a reverse direction.

Abstract: A kit for adapting a flame-producing lamp to electrical use by mounting on the lamp a fiber optic bundle having a portion shaped to simulate a flame and a lamp for illuminating that bundle at a position remote from its shaped portion.

Abstract: A steel door fabricated of sheet steel and having inner and outer end panels retained in spaced relation by inwardly-bent vertical edge portions has a plurality of inwardly-swaged recesses spaced along one edge of the door for the flush reception of hinge plates securable in place by the use of sheet metal screws received in bent sheet metal hinge support plates fixed within the door behind each of the recesses. The hinged edge of the door is formed along its length with a central, outwardly-extending portion of rectangular cross-sectional configuration along which the hinge plate recesses are formed and which, at the inside of the door, define side-wall portions within which complementary side wall portions of the bent metal hinge support plates are snugly received.

Abstract: An arrangement which connects a pair of valve mounting manifold blocks in end-to-end abutment includes each block having an opening in oneend thereof, the respective end openings in the pair of blocks being in registry with one another when the respective ends of the pair of blocks are aligned and abut one another. A fastener extends from the opening in one block into the opening in the other block, and the opposite ends of the fastener are respectively fixed to the blocks such that the fastener is contained substantially entirely within the blocks. The openings may be defined by slots in the bottom of each block and the fastener may be a screw extending within the slots in threaded engagement with a nut.

Abstract: An apparatus is provided for organizing and arranging bundles, preferably bundles of folded or unfolded corrugated boxes or blanks, into stacks which include a plurality of layers. The apparatus includes a vertical conveyor for supplying bundles to a loading station, at which one or more operators or mechanical arms are located, which function to remove the bundles for the loading station and to position them in a desired pattern on a horizontally movable support to form a layer. After a complete layer is formed, the support is removed from beneath the layer so that the layer of bundles is deposited on a stack-forming device which includes a vertically movable platform which is incrementally actuated downwardly each time another layer is deposited thereon to form the stack. The formed stack is then discharged from the stack-forming device and straps are applied thereto.

Abstract: A dust collector has a dirty air chamber arranged to receive a flow of dirty air containing suspended solid particulate material, a clean air chamber communicating with exhaust, and a plurality of filter bags arranged to have their interior surfaces communicate with the dirty air chamber and operative to separate solid particulate material from cleaned gas passing therethrough. The improvement includes an elongated venturi-like member arranged to service a number of such filter bags, and a conduit arranged to deliver high energy pulses of reverse air through the venturi-like member countercurrent to the normal flow of dirty gas therethrough. Such pulses of reverse air momentarily create a reduced pressure within the serviced filter bags, and induce cleaned gas to flow back through the serviced filter bags to dislodge and remove accumulated solid particulate material from the interior surfaces of such bags.

Abstract: In order to provide intrinsically safe operation of an electromagnetically operated device, such as a pneumatic or hydraulic valve, a circuit in accordance with the invention includes electrical energy storage means, such as a capacitor, which is charged from a source at an intrinsically safe energy level and is subsequently at least partially discharged via switching means through an operating coil of the electromagnetic device. The capacitor is preferably charged from an intrinsically safe d.c. supply via a diode which inhibits discharging of the capacitor back into the d.c. supply. The switching means preferably operates to connect the capacitor to the operating coil when the charge on the capacitor reaches a predetermined level, as determined by a voltage sensitive device which responds to the capacitor voltage.

Abstract: An all ports in body, solenoid operated valve assembly includes a valve body and a valve operator mounted on the body with an electromagnetic core featuring a center leg projecting axially beyond the solenoid coil. A plunger and seal assembly is mounted for reciprocation along a path of movement aligned with the core center leg. The plunger and seal assembly is remotely located from the coil and all flow passages are formed in the assembly such that fluid flow through the center of the coil is excluded to minimize heat transfer to the confined fluid being controlled when the valve is electrically energized and to prolong the orifice seal life of the assembly.