Abstract: Each of a plurality of message terminal units (10, 12, 14, 16) has a keyboard (20) for entry of data, a visual display (22) for display of entered and received data, and a logic system (FIG. 4) for processing received and transmitted messages. Each unit stores in a CPU (52) a dedicated user terminal identification. Each transmitted message is annexed to a destination terminal identification and said user terminal identification (FIG. 5). Only a unit with a stored user identification identical to the destination identification in a transmitted message can receive and display transmitted messages. Upon receipt of a message, a terminal sends an automatic response to the sending terminal, which provides an appropriate indication to the sender. The receiver can send a manual acknowledgement (42) to the sender, which causes the message to be cleared from the sender's display.

Abstract: A fastening device (14) consisting of a plate bent to form what is essentially a U profile. The shanks (32) of this plate each comprise a narrow section (34), the end of which widens to form a pair of hooks (36, 38). The hooks are provided in order to allow attachment of the device to a vertical supporting rail (12) through the introduction of the shanks into corresponding parallel slots (20) in the rail, by which means a corresponding mounting device (26) on a screen or wall panel (10) can be hooked in between the rail (12) and the rib (30) of the fastening device itself. In order to prevent the fastening device from coming loose and falling out when a screen or wall panel is removed, at least one hook (36) of each shank (32) is provided with a projection (40) directed towards the rib of the fastening device.

Abstract: A tool cartridge to be fastened to a boring bar for line boring operations comprising a pair of split legs on the tool cartridge. Each leg has an insert with a threaded bore having a different pitch. A differential screw comprising two threads on the shaft corresponding to the two different threaded bores on each insert effects a micro-adjustment of the radially moveable leg on the cartridge holding the cutting tool when the differential screw is rotated.

Abstract: A circulating sub is provided which is adapted for connection in a production tubing string of a flowing well and which defines a flow passage through which production fluid is enabled to flow. The body structure of the sub defines an equalizing port in communication with the annulus between the tubing and casing of the well, which port is normally closed by means of a sleeve valve. An actuating plug is dropped through the production tubing after shutting in the well and descends to the level of the circulating sub where it seats on the closed valve. Application of fluid pressure through the tubing develops sufficient pressure differential across the valve and plug to force the valve to its open position to thus communicate the tubing and annulus for pressure equalization. The plug member incorporates a check valve which permits accurate balancing of kill fluid to well pressure to thus permit emergency killing of the well without causing damage to the production formation.

Abstract: A control system for elecctronic discharge machine includes an automatic relay control and a current cutoff control of particular interest.The automatic relay control controls the energy level of machining pulses as a step function of machining cycle period by cutting in or out resistors in a power circuit through the machining gap. Higher frequency pulses are held to a lower current level to avoid power transistor overload.The relay control circuit includes multivibrators, energized at progressively higher values of pulse period by the counters, and an output circuit for each multivibrator which controls one of the relays which vary the gap circuit resistance.The relay control circuit also includes a threshold responsive circuit which senses any change in the several relay controlling output signals and acts to interrupt machining pulses briefly to allow time for relay operation.The current cutoff control circuit detects abnormally low voltage across the machining gap and reduces gap discharge energy level.

Abstract: A polyurethane RIM system has at least two molding stations. The reactants are brought to the mixheads as three separate streams. One stream contains the isocyanate, the second stream contains some of the polyol, the chain extender and crosslinker and a third stream contains additional amounts of the polyol, along with what additives might be desired. At each mixhead the proportions of ingredients are controlled to give an isocyanate index of about 100, but the ratio of one polyol stream to the other is regulated to control the flex modulus and other properties of the molded product as may be desired. In this way, one source of supply can be used to feed several molding stations, each of wich may produce a product of different physical properties and thus of different costs.

Abstract: A drive mechanism for rotating the sweep arm of a bottom silo unloader. The silo, which contains a stored material, is mounted on a foundation and a trough is located in the foundation and extends from the center of the silo to the exterior. A sweep arm is mounted for rotation with respect to the center of the silo and acts to dislodge stored material and convey the dislodged material to the trough where a discharge conveyor mounted in the trough conveys the dislodged material to the exterior of the silo. The drive mechanism for rotating the sweep arm about the silo includes a drive shaft extending within the trough, and the inner end of the drive shaft carries a sprocket which is engageable with a plurality of circumferentially spaced drive pins mounted on a turntable that carries the inner end of the sweep arm. Rotation of the sprocket will correspondingly rotate the turntable and sweep arm about the center of the silo.

Abstract: A process for producing a margarine-type food product includes the steps of: blending a dairy substance such as skim milk with a hydrogenated vegetable oil in approximately a 60/40 ratio; processing the skim milk/oil mixture through a homogenizer to obtain an oil globule size range essentially similar to a fat globule size range found in dairy cream; blending a dairy cream with the homogenized skim milk/oil mixture; and processing the mixture of dairy cream and skim milk/oil through a butter churning process.

Abstract: A suspension system for protective headgear comprising a plurality of straps of a relatively inextensible material extending up in the headgear toward but stopping short of the crown of the headgear secured to the headgear at spaced intervals around the inner surface of the headgear. Each strap is formed with transversely extending pockets and has elastically deformable tubes in the pockets enabling extension of the strap within a limited range of extension upon tensioning of the strap, whereby with the headgear worn by a wearer and upon application of an impact load on the top of the headgear, the headgear moves down toward but stops short of engagement with the wearer's head and the tubes in the straps deform to attenuate the shock upon the wearer from the applied load.

Abstract: A relatively light weight, low cost compact safety light which may be worn or carried by athletes such as joggers, runners, cyclists, etc. is provided. The safety light is comprised of a light source coupleable to a battery power supply by a position sensitive switch which is sensitive to movement of the athlete and provides intermittent bursts of light which are highly visible to oncoming cars. In one embodiment, the light source is comprised of a light emitting diode coupled to one or more pen light batteries by a position sensitive switch such as a mercury switch. One or more lense members are provided to increase the visibility of the light generated by the light source. A first reflective means located within the safety light housing is utilized to reflect the light generated by the light source through the lense member while a second reflective means located on the outside of the housing provides additional reflectivity for the light generated by oncoming cars.

Abstract: The drawings and description disclose a flat top end closure for a liquid carrying container, which does not include the usual, well-known gable top characteristics. The flat top end closure includes two oppositely disposed outer closure panels which are adapted to lie flat on top of the underlying fold-in panels and wherein one is longer and overlaps the edge portion of the other shorter one, with the longer one including a lift tab for lifting a portion of the pour spout from its flat attitude during the opening process, and two oppositely disposed, three-segment fold-in panels, one of which serves as the pour spout when opened and includes a lift tab on one of its segments for first lifting a portion of the pour spout from its flat attitude during the opening process, and then opening the full pour spout in such a manner that the pouring lip need not be handled.

Abstract: An electro-mechanical control system for controlling all of the movements of one or more slides on a single workhead grinding machine. A programmable controller is interfaced with a digital to analog converter or feed control which in turn controls a drive motor that is directly connected to a screw actuator means that directly controls the movements and positions of a slide. The positioning accuracy of the control system is derived from the accuracy of the electronic control components and the stability of the machine. The control system can control the operative movements of each slide in a compound slide assembly, simultaneously or independently, for a part of a grinding machine cycle. The compound slide assembly may alternatively carry a rotating grinding wheel or a workhead that is reciprocated at high speed for a grinding operation on a workpiece.

Abstract: An apparatus for agitating and pumping a liquid slurry, such as liquid manure slurry. The apparatus includes a pump which is adapted to be positioned within the lower end of a pit that contains the slurry, and the pump is operably connected to a motor which is located above the pit. The motor-pump unit is mounted for sliding vertical movement on a fixed column and can also be rotated horizontally relative to the column to vary the position of the outlet of the pump during agitation of the slurry. The apparatus also includes a means for tilting the motor-pump unit with respect to the fixed column. When the pump is raised to a location adjacent the top of the pit, the motor-pump unit can be tilted in a vertical plane to move the pump out of the pit to a position where it can be repaired or maintained.

Abstract: A flat bed side assembly including a barrier portion, a socket portion, a support portion and a holder portion; the barrier portion including a plurality of generally rectangular panels disposed generally vertically in an end to end relationship around the periphery of a flat bed; the socket portion including a plurality of pocket sections arranged around the periphery of the flat bed adjacent the lower edges of the panels, each of the pocket sections extending downwardly from a plane through the flat bed; the support portion including a plurality of elongated bar members having cross-sectional configurations substantially the same as those of the pocket sections, each bar member having its lower end disposed within one pocket section, the bar members extending upwardly from the pocket sections generally vertically; the holder portion including a plurality of bracket members with at least one bracket member engaging each of the bar members, each bracket member including a plate section, a strip section having

Abstract: A tool and method for pressure forming teeth on the periphery of a cylindrical work piece wherein each of the teeth has a predetermined crown formed thereon. The tool includes a body having a leading edge and a trailing edge. The trailing edge of the tool body has an undercut surface thereon supportingly receiving a tooth crowning section having the side edges thereof shaped outwardly of the undercut surface on the tool to shape transversely formed insert teeth to form a predetermined crown on the teeth of the part being formed by the tool.

Abstract: A plasma-arc furnace comprises a casing with plasma torches, particularly ree torches, mounted therewithin in symmetrical relationship relative to the vertical axis thereof. Each of these torches comprises a body provided with a nozzle and an axial conduit for feeding a plasma-forming gas therethrough, and a cylindrical electrode disposed within said conduit. According to the invention, the distance between the centers of working ends of electrodes disposed within adjacent plasma torches is not more than 15 diameters of the electrode.

Abstract: A cold water pour-in beverage brewer having a generally C-shaped body with the upper and lower leg portions extending forwardly from an upright interconnecting leg portion. The body houses an integral inverted L-shaped receptacle formed by an elongated shallow cold water basin from adjacent the bottom of one end of which a relatively deep hot water tank depends. The cold water basin sets in the top of the upper leg portion of the brewer body and has an out-turned flange on its top edge which rests for support on an in-turned flange on the edge of the top opening in the body. A cover fits over and completely covers the cold water basin and rests thereon. The cover has a pour-in opening adjacent the front of the brewer. A pair of top beaker warmers are supported in tandem on a heater unit mounted on the cover rearwardly of the pour-in opening. The hot water tank is housed mainly within the upright leg portion of the body.

Abstract: Ice cream lollies of complex shapes are produced by a die pressing operation, whereby a prefrozen and deformable lolly body is placed between a pair of die tools. The bodies to be die shaped may be either conventionally produced bodies as prefrozen about a stick, in which the body is held during the shaping operation, or they may be lumps of extruded prefrozen material, whereby a preparatory conventional mold freezing can be avoided. The die tools may be used additionally for concurrently providing and sealing an envelope about the final product, thus finishing it as a sales product.

Abstract: Process of preparing a solid controlled release urea-formaldehyde fertilizer composition comprising preparing an aqueous mixture of urea, formaldehyde and ammonia, heating the mixture, acidifying the mixture to initiate methylene urea polymerization and heating to complete methylene urea polymerization and dry the reaction products. The process is carried out under conditions such that the majority of polymeric nitrogen present in the final product consists of short chain methylene urea polymers selected from the group consisting of methylene diurea, dimethylene triurea and mixtures thereof.