Abstract: A truss assembly apparatus for simultaneously rolling opposed toothed metal connector plates of V-webs onto both sides of vertically spaced horizontal wood chords. A prefabricated wood frame of such chords with end and intermediate spacers is fed between parallel vertical axis powered rollers with the V-webs manually applied to each side ahead of and as the frame is compressively driven through.

Abstract: A press for forming self-supporting bales of fibrous material from a pulpy mass of the same having a high liquid content wherein the inner sides of the fixed walls of the baling chamber are provided with parallel narrow grooves having holes in their bottoms extending through the walls to the outside of the chamber. The pulpy mass creates rib-like formations in the grooves which block loss of solids but permit escape of liquid from the chamber. The grooves are parallel to the movement of the press head so the grooves are self-cleaning.

Abstract: A method and apparatus is provided for printing games such as poker hands on two-piece frustoconical containers with four cards up and one down on the container sidewall and a hole card or draw card on the bottom of the container. The sidewalls are formed from blanks printed in a sequence by four, five, six and seven-around printing cylinders, all of which impress one card identity indicia on each printed cup blank on a strip of stock passed through the array of cylinders. A strip of bottom blanks each bearing a single card identity are printed in sequence by an eleven-around printing cylinder and the sidewall blanks and bottom blanks are assembled in the printed sequence to provide at least 4,620 cups all bearing poker hands with no two cups bearing identical hands. None of the card identity indicia on the several rolls is repeated. A total of thirty-three different indicia is used in the present method and apparatus.

Abstract: A printing control system includes a printing mechanism having settable print members. A gear is rotatably mounted and operably connected for selectively setting the print members. The gear is connected to control inhibiting the printing mechanism from being energized to print. The gear may also be connected to control inhibiting the selective setting of the print members.

Abstract: This disclosure is directed to an in-line, multi-station screen printer which has a first track for receiving a plurality of platen carriers. A series of printing heads are disposed above the first track and adapted to register with the carriers at pre-selected locations. Means are associated with each of the platens to hold the workpiece in a taut position on the platen. A drying station is located at the end of the printing stations and includes a silicone rubber heater which can be brought into direct contact or close proximity with the platen surface to dry the screening ink or dye. Once the drying cycle is completed, the carriers are discharged on a second, return track to be returned to the loading and unloading end of the machine where the operator can unload the carrier and replace the completed workpiece with a new workpiece.

Abstract: In a lithographic printing apparatus, the rollers that supply ink and/or water to form rollers have a surface with minutely intermixed hydrophilic and oleophilic areas. The amount of water retained by a roller is dependent upon the total of the hydrophilic areas, and the amount of oil-based ink retained by the roller is dependent upon the total of the oleophilic areas. A preselected ratio of oil to water is obtained by selecting the ratio of hydrophilic areas to oleophilic areas.

Abstract: Ink metering apparatus comprising a resilient surfaced roller urged into indented relation with a printing plate; a source of ink positioned to apply an excess of ink to the portion of the resilient roller surface which has applied ink to the printing plate; and a resilient metering member having a hard, smooth, polished, highly developed, flexible edge resiliently urged by adjustment screws into pressure indented relation with the resilient roller surface. The flexible polished edge is resiliently and adjustably urged into pressure indented relation along the length of the resilient roller surface by forces of sufficient magnitude to deform the flexible polished edge along the length thereof such that the edge and the roller surface conform with each other and cooperate to form an orifice which is adjusted to the imperfections of the metering member and the resilient roller surface to form a continuous uniform film of ink on the resilient roller surface.

Abstract: A power-and-free conveyor includes a number of pusher dog supporting members attached to a drive chain on a power line. Each pusher dog supporting member includes a pusher dog pivoted at an upper portion thereof and a stopper stopping the pusher dog in a vertical downwardly directed position, where the pusher dog can engage with the free trolley included in a carrier on a free line. The stopper has a pusher dog disengaging portion extending outward therefrom. A disengaging device is disposed on a conveyor line at a location where the carrier is to be brought to a stop. The disengaging device has a stopper raising member which projects into the path of travel of the pusher dog disengaging portion of the stopper. When the carrier reaches the location, the pusher dog disengaging portion of the stopper comes into contact with the stopper raising member which has already projected into the path and the stopper is raised, whereupon the pusher dog is released from the stopper and is disengaged from the trolley.

Abstract: A vehicle adapted to be selectively operated with or without guide rails or tracks, the vehicle including a steerable vehicle axle means having steerable wheels mounted thereon and at least one non-steerable vehicle axle having non-steerable wheels mounted thereon. The non-steerable vehicle axle is mounted so as to be pivotable in its entirety about a centrally positioned vertically extending pivot axis. Springs are provided for suspending a superstructure of the vehicle with a spring bracket fixedly mounted to an axle body of the non-steerable vehicle axle for supporting the springs at the vehicle. A ring mount segment is provided for mounting the springs at outer ends of the spring bracket so as to be horizontally movable with at least two supporting rollers, each having an axis of rotation disposed approximately toward a pivot center of the non-steerable axis, being attached to an underside of the springs.

Abstract: This invention relates to a suspension railroad in mines, including a monorail having an elongated friction section and an elongated rack section located above the friction section, a car suspended on the monorail and driven for moving the car along the rail including a friction wheel in frictional engagement with the friction section, a gear wheel coaxial with the friction wheel, and a shiftable device for moving the gear wheel into and out of engagement with the rack section.

Abstract: The transverse coupling assembly for the end trucks utilizes a hollow shaft which is mounted via a bearing to a middle truck or vehicle body and connected via linkages to the two end trucks. In one embodiment, the shaft houses a torsion spring element which is pretensioned and which connects the shaft to a linkage. In another embodiment, the shaft can be provided with partitions to form a storage space for a fluid operating medium, diesel oil or the like.

Abstract: A railway car for carrying autos includes a loading end having lower folding and an upper swinging door which is actuated from the lower platform of the car. The upper and lower doors are opened and closed independently to provide a complete closure for loading end.

Abstract: The stops of a draft gear housing of a rail car central coupler have to meet relatively large tractive and compressive forces in service. Up to now the expense involved in the fastening of such stops has been very great. In many cases, where the stops or bearings were joined to the center or stub sill, cracks formed and/or the sill became deformed. This incurs considerable expense for repairs and means a loss of service while the vehicle is being repaired. In accordance with the instant disclosure, to avoid such problems the center or stub sill of the rail car is now made such that the front stop and the rear stop are integral parts of the sill.

Abstract: A tray is attached to the base of an over-the-bed table normally used by bed-ridden patients. This tray provides a convenient and readily available place for the patient to place his or her slippers to prevent them from being shoved under the bed or across the room. It also provides the patient with a convenient footrest when using the table either while sitting on the edge of the bed or in a chair. One version of the tray is pivotable in order that the patient may pivot it with his or her feet to the most comfortable angle. When the tray is pivoted, a method is provided for locking the table such that it will not move away from the patient due to the horizontal force vector resulting therefrom. Another version of the tray may be raised or lowered to suit the comfort of the patient.

Abstract: A pallet made of synthetic resin and including four corner posts, intermediate posts therebetween, a center post, with hollow edge boards connecting the corner posts and the intermediate posts, and hollow deck boards connecting the intermediate posts and the center post. The pallet is formed from four identical complementary elements combined along two crossed division lines, each element provided with the above described hollow edge boards and hollow deck boards, each of which have flat walls provided at both ends thereof to form a closed hollow space therein. Reinforcing ribs are provided in the hollow space in each of the edge boards such that the reinforcing ribs extend parallel to the side surfaces of the pallet and are disposed such that the ribs meet with one another at right angles in the four corners of the pallet. The pallet is assembled by butt fusing the reinforcing ribs and upper and lower flat walls of the elements together.

Abstract: A furniture assembly, such as a knock-down work station, desk or table, which may be easily assembled without the use of tools. The furniture assembly comprises a table top, a pair of I-shaped leg members, and a modesty panel which are interfitted and attached together to form a rigid furniture unit. The table top has secured thereto a pair of elongated metal channel-shaped members depending from the bottom surface of the table-top and having a plurality of slots therein into which are inserted tabs secured to the leg members for suspending said leg members from said table top. The panel is formed with side and end panels which abut opposing surfaces of the leg members when the panel is assembled, to hold said leg members from movement. Assembly is completed by insertion of snap fastening elements into registering apertures in the leg members and panel flanges.

Abstract: A fluidized bed coal reactor includes a combination nozzle-injector ash-removal unit formed by a grid of closely spaced open channels, each containing a worm screw conveyor, which function as continuous ash removal troughs. A pressurized air-coal mixture is introduced below the unit and is injected through the elongated nozzles formed by the spaces between the channels. The ash build-up in the troughs protects the worm screw conveyors as does the cooling action of the injected mixture. The ash layer and the pressure from the injectors support a fluidized flame holder combustion zone above the grid which heats water in boiler tubes disposed within and/or above the combustion zone and/or within the walls of the reactor.

Abstract: The invention relates to an apparatus for lining the inner walls of industrial furnaces with a plurality of insulating blocks, each block comprising an insulating mat which is folded in corrugated manner and possibly stitched in this shape, the insulating mats being made of highly heat-resistant material, especially ceramic fibrous material, with carrying elements arranged on the outside of the corrugations, the carrying elements being equipped on the outside of the insulating blocks with fixing means to allow each individual insulating block to be fixed to the furnace wall.

Abstract: A wheel-like device enables a looped-strand drum lacing to be made thereon from two lengths of rope for use when forming a tree root ball of soil during transplanting of the tree. The device has a central hub with a plurality of outwardly projecting posts mounted thereon in a circular arrangement. A plurality of equally circumferentially spaced legs extend radially outwardly in a spoke-like fashion from the hub. Each of the legs have a peg mounted on the leg at a predetermined distance from the hub. A first piece of rope is looped about the hub posts and leg pegs to form a plurality of outwardly extending closed end loops. A second piece of rope is wrapped in an overlapping manner with the individual strands of the previously formed loops into a circular configuration about the hub posts to form a circular drum lacing base. The two pieces of rope are stapled together at alternating overlapped locations.

Abstract: The application discloses a method and apparatus for cutting bed sheets and the like from a large, continuous length of fabric, forming hems on the cut edges of the fabric panels, and then sewing the hems. The fabric is fed "wrong side out", and one of the hems is formed upside down while the other is formed right side up. One hem is formed more or less directly above the other. A pair of sewing machines are mounted one above the other, and the entire fabric panel, with the just-formed hem folds, is advanced laterally through the sewing machines, simultaneously sewing both hems. By arranging for the mounting of both sewing machines, one above the other, servicing of the machines by a single operator is readily accomplished. Moreover, the substantial amount of fabric between the two hems is accommodated in a generally vertically oriented loop of the fabric providing for highly efficient utilization of factory space.

Abstract: Sewing apparatus for automatically feeding individual belt loops to a folding mechanism where opposite transverse ends of each of the belt loops is folded back upon itself. The loops are then delivered in tandem to a tacker where the folded ends are automatically stitched to a garment.

Abstract: A sewing machine composed of a drive motor, an upper shaft with detector, a motor speed control and a motor starting and stopping control. The motor speed control has a bistable device to start and stop the machine in response to signals from a switch and an extreme lower speed control to drive the motor at an extreme low speed in response to a signal from a switch. Motor speed control also has counters which when set and actuated by a switch execute a predetermined finite number of stitches. Motor control device also has circuits allowing the motor to operate in response to a variable speed control switch.

Abstract: A composite bulky fabric of narrow width having lengthwise extensibility and widthwise dimensional stability in which the fabric is made up of a plurality of flattened tubular-knit components disposed in edge-to-edge juxtaposed position and interconnected by seams extending along the junction and formed of a zigzag line of stitching, the knitted tubular components being formed of a non-run stitch comparable to a tricot stitch formation. The tubular knit components are preferably knit on a small diameter knitting machine having a reciprocating feed for each of the needles so that the feed reciprocates between a pair of adjacent needles, and is supplied from a creel or other stationary supply.The products made in accordance with the invention are useful for thermal and electrical insulating, gasketing, padding, sealing and similar purposes.The novel method for producing the fabric is diagrammed in FIG. 6.

Abstract: A sailing craft is provided which has the ability to limit heeling under various headings, and which includes a deck assembly mounted for lateral movement between two outrigger type hulls. The deck assembly may be moved toward the windward side of the craft, and so that its weight and that of the crew serve to counteract heeling resulting from the wind forces. A third hull is mounted adjacent the bow portion of the deck assembly, and the three hulls are disposed in a triangular, highly stable arrangement. Also, apparatus is provided whereby the crew may selectively rotate the third hull about a vertical axis to effect steering of the craft.

Abstract: An applicator 15 deposits a solvent-carried adhesive intermittently along a moving strip 10. A sump 26 is arranged below strip 10 to contain a quantity of the solvent 27, and an adhesive wheel 16 rotates with its lower region immersed in the solvent. Adhesive wheel 16 has a continuous periphery on which adhesive is continuously applied, and an applicator wheel 17 rotates against the adhesive wheel and the bottom of the strip above the sump. Applicator wheel 17 a as an intermittent peripheral surface 18 that receives adhesive from the adhesive wheel and applies it in an intermittent pattern to the bottom of the moving strip. The sump, the adhesive wheel, the applicator wheel, and the region of contact between the applicator wheel and the strip are enclosed to retain a substantially saturated solvent vapor atmosphere within the enclosure 25 to inhibit the evaporation of solvent from the adhesive.

Abstract: Apparatus for distributing lining material in cap shells where the apparatus has a lining material extrusion means including an extrusion passage positioned above a path of cap shells moving through the apparatus and a rotatable knife positioned above the exit end of the extrusion passage for cutting lining material as it is extruded from the passage. A drive means is provided for rotating the knife and is connected to the knife by means of a transmission means. The transmission means includes at least two sets of non-circular gear pairs with the relative angle between the sets being adjustable whereby the rotational speed of the knife may be varied.

Abstract: Apparatus for manufacturing epitaxial Ga.sub.1-x Al.sub.x As:Si films via liquid-phase epitaxy, using a boat in a quartz tube. The Ga, which is contained in a graphite boat, open at the long side, is baked out first. The Ga-melt is allowed to run onto GaAs substrate wafers, on which Si is deposited, and to be drawn into the gap between the GaAs-substrate wafers and the plane graphite surfaces. The thin Ga-melt formed above the GaAs substrate wafers is then brought into contact with the melted Al and is allowed to cool.

Abstract: A method and apparatus for protecting the underface of ceramic or refractory tiles and the refractory rollers forming the advancing plane of a roller tunnel kiln during the firing and cooling of the tiles, in which to at least part of the underside of the tiles is applied a protective layer of a refractory material in suspension by an applicator, such as rollers, during advancement of the tiles by a conveyor into the kiln so that the protective layer is interposed between the underface of the tiles and the refractory rollers of the kiln preventing the tiles when heated and cooled from adhering or being welded to the refractory rollers.

Abstract: A magnetic brush developing apparatus for use in a toner powder image transfer type electrophotographic copying machine which includes an outer cylinder fixedly disposed at a position to confront a photosensitive member or photoreceptor, a magnet roller rotatably accommodated in the outer cylinder for being rotatably driven, a toner tank or hopper containing therein electrically conductive and magnetically attractive toner particles having high resistance and disposed above the outer cylinder for supplying the toner particles onto the outer cylinder, an excessive developing region for developing an image portion of an electrostatic latent image formed on said photosensitive member with sufficient density, and a toner removing region for removing toner particles adhering at least to non-image portion of the electrostatic latent image.

Abstract: Apparatus for supporting a plurality of wafer-like substrates so as to be treatable in a plasma environment. At least three plate-like electrically conductive electrodes are provided. They are parallel to and spaced from one another along an axis. A support adjacent to each electrode supports a wafer-like substrate against at least one of the faces of at least one electrode of a pair of adjacent electrodes. A first conductive bus is conductively connected to a first set of alternate ones of the electrodes, and a second conductive bus is also provided. An individual capacitative coupling is respective to each member of a second set of the electrodes and is connected to the second bus so that each pair of adjacent electrodes and the respective capacitative coupling are in series connection, and all of the pairs of electrodes are in parallel connection.

Abstract: This disclosure is concerned with novel, submersible cover designs for pools containing fish, such as salmonoids and the like, including vertically separated and stacked light-opaque covers that divide the pool into dark zones in which the fish are trained to rest in stacked formation with accelerated feeding habits and with a plurality of openings in the covers to provide a plurality of feed regions along the surfaces of the covers.

Abstract: A milker has a lower base with a concave bottom and a lower exit under vacuum that can be closed by a float with valve until the milk level pivots and/or raises the float to open the exit. An enclosure body is fitted on the base and includes a main vacuum inlet and a milk inlet nipple positioned and angled to direct milk inflow at the side and/or below the float. An enclosure cap is releasably fitted on the top of the enclosure body and mounts an air valve, pulsation nipples and a further vacuum inlet. A central stem from the bottom extends up through a central passageway in the float and also through the cap to afford a fulcrum or support for an arm that pivots or slides to close the main vacuum inlet when the air valve is opened. The float can pivot and rise to a limited extent when milking or when the milker is inverted for washing. The assembled cap, enclosure body and base are interfitted and sealed when the inlets and milk outlet are in alignment.

Abstract: A cage construction for use in breeding fur-bearing animals such as mink, comprises a plurality of cages arranged on a stand, whereby each cage is provided with a breeding coop with an opening giving access to the cage. Each breeding coop is formed by a vertical plastic pipe open at both ends and having a substantially rectangular cross section, the pipe wall being formed by a central foam plastic layer and an outer and an inner solid surface layer. These layers are integrally connected.

Abstract: A farrowing pen is provided for accommmodating and confirming a sow or the like within a given space wherein the confined sow is permitted limited movement within the space without causing accidental injury or death to her piglets. At least one of the elongated side walls of the pen is provided with a plurality of longitudinally spaced elements. The elements are mounted for adjustment to selected positions relative to the remainder of the side wall to provide maximum nursing space for the piglets.

Abstract: This invention relates to Rankine cycle engines and to improved methods of operation whereby catalytic oxidation of a major proportion of the fuel takes place in the boiler section of the engine.In order to improve the operation of a Rankine engine, the engine is modified to include a combustor having a thermally stable and oxidation resistant monolith containing a multiplicity of flow paths or channels, the monolith being made from a catalyst material or supporting a catalyst material for the catalytic combustion of the combustible gases and injected fuel.

Abstract: A compact burner-boiler combination having an improved heating cycle for effecting substantial fuel saving and maximum boiler and combustion efficiency in a relatively simple and expedient manner. This is attained by a compact boiler construction utilizing an improved burner construction and method of combustion in which a liquid fuel is gasified by the heating products of combustion to form a homogeneous fuel gas-air mixture prior to combustion so as to effect a substantially stoichiometric burning of the fuel so as to result in a high velocity and a very high flame temperature (approx. 4100.degree. F.) and to cause the breakdown of a portion of the hydrocarbons into their basic component elements so as to make them available for diffusion burning.

Abstract: Two piston plates are mounted for rotation and axial reciprocation in the bore of a cylindrical housing, and at right angles to each other. Each plate carries on opposite ends thereof a pair of pistons which reciprocate in spaced bores formed in a pair of rotary cylinder plates located in opposite ends of the housing. Each cylinder plate has an integral shaft projecting therefrom to the exterior of the housing. A plurality of roller cam followers project from opposite sides of the piston plates into a sinusoidally shaped cam track formed in the bore of the housing, so that when fuel is fed into the piston bores and properly ignited, the reciprocation imparted to the piston plates causes the cam followers to roll in the undulating cam track to impart rotation to the cylinder plates and to the shafts which project therefrom.

Abstract: A two-stroke cycle gasoline engine including at least one two-stroke cycle power cylinder-piston assembly adopting uniflow scavenging and incorporating two horizontally opposed pistons, and at least one scavenging pump cylinder-piston assembly of the reciprocating type with or without having crankcase compression, wherein the total stroke volume of the scavenging pump means is 1.35 to 1.85 times as large as that of the power cylinder-piston assembly, and the operational phase of the pump cylinder-piston assembly is shifted from that of the power cylinder-piston assembly by an angle of 180.degree. or a little more.

Abstract: A two-cycle engine of the crank chamber preloading type of the construction in which a crankcase, a cylinder head and a cylinder are clamped together by a plurality of clamping members penetrating the cylinder includes a suction port formed in a wall of the cylinder, an exhaust port formed on a side of the cylinder opposite the suction port, at least one main scavenging port disposed between the suction port and the exhaust port and directed toward the suction port, and at least one ancillary scavenging port disposed above the suction port and juxtaposed against the exhaust port. At least one ancillary scavenging passage branching from at least one main scavenging passage and communicating with the ancillary scavenging port extends around an opening for one of clamping members on the suction side.

Abstract: In a reciprocating internal-combustion engine, a power unit comprises cylinders 1, cylinder heads 2, pistons, connecting rods, a crankshaft and crankshaft bearings. Soundproofing supporting members mount the ends of the power unit in an outer pan 7 which is connected to a flywheel housing 8. Soundproofing supporting members 12, 12a, 13 are coaxial with the crankshaft and center the power unit and hold it against substantial axial movement in the outer pan. An oil seal 14 is fitted between the power block and the top rim of the outer pan.

Abstract: In the ignition system of the internal combustion engine, a preignition control circuit is further provided. The preignition control circuit includes a high voltage generator which supplies a high voltage to the spark plug to produce a preignition spark between the electrodes of the spark plug. The preignition spark is timed to appear as the engine nearly concludes its suction stroke so that radicals are produced from the air-fuel mixture around the electrodes thereby to ensure reliable ignition and complete burning of the air-fuel mixture.

Abstract: An emission control method is disclosed for the current, conventional, piston type, spark ignition, gasoline or equivalent fueled internal combustion engine having at least one cylinder. The method of the present invention increases the engine's fuel economy upwards of 70% from its current level. The emission control method being accomplished by engine modifications including a dual induction system adapted to provide to the engine a relatively low (lean) fuel content and therefore a relatively low power fuel-air mixture. This accomplishes an increased fuel economy and a substantially emission free exhaust, as pertains to the fuel alone. The dual induction system includes a heated intake supplying all of the fuel to the engine in a highly-heated state and a small percentage of the total inducted air, equally as highly heated. The dual induction system also includes an unheated and relatively much larger capacity cold air intake adapted to supply all of the unheated air inducted by the engine.

Abstract: An air-fuel ratio control device characterized by the fact that an electromagnetic valve which controls the air bleed quantities for both high- and low-speed fuel systems simultaneously has a pin inserted in a valve disc so as to prevent the rotation of the valve disc but allow it to move axially for open-close operation, so that the valve disc and the seat always contact at the same contacting portion and maintain a perfect seal therebetween. This enables an accurate control of the air bleed quantitiy and therefore of the air-fuel ratio.

Abstract: A closed loop engine control system for internal combustion engines is described. The control system includes a comparator which is responsive to signals indicative of the presence or absence of oxygen in the exhaust gas of the engine and a set point or reference and is operative to generate an output signal for receipt by a fuel delivery controller which will cause that fuel delivery controller to increase fuel delivery in the presence of oxygen molecules in the exhaust gas and to decrease fuel delivery in the absence of oxygen molecules in the exhaust gas in order to maintain the fuel delivery at the predetermined, and preferably the stoichiometric, air/fuel ratio mixture point. An oscillatory stabilization signal is also applied to the comparator to reduce the amplitude of the limit cycle.

Abstract: An exhaust gas recirculation system for an internal combustion engine has an exhaust gas recirculation passage, a constant pressure chamber disposed in the exhaust gas recirculation passage, a pressure regulating valve operative in response to the exhaust gas pressure in the constant pressure chamber, a first flow-rate control valve adapted to be actuated by the vacuum regulated by the pressure regulating valve so as to open and close the exhaust gas recirculating passage and a second flow-rate control valve disposed at the upstream side of the constant pressure chamber and adapted to change the cross-sectional area of the exhaust gas recirculating passage in response to the vacuum generated by the internal combustion engine. The exhaust gas recirculation system further has an atmospheric-pressure introduction passage attached to the constant pressure chamber or disposed in a pressure transmitting passage through which the constant pressure chamber is communicated with the pressure regulating valve.

Abstract: An archery bow having a riser capable of being gripped by an archer from which is centilevered upper and lower spring members. Bow limbs are pivotably suspended from the free end of each spring member at the midsection thereof so that each limb hangs on the archer's side of the bow. A bow string is attached to upwardly extended tips of the limbs. Cams, which are rotatably supported from the top and bottom sections of the riser, are connected to the lower portion of each limb by means of a control cable that is reeved to the working profile of the cam. One end of the control cable is secured to the base of the associated limb while the opposite end is secured to the limb's midsection to hold the control cable taut against the working surface of the associated cam. Accordingly, as the bow is drawn, the pull weight delivered to the bow string is controlled by the cam system to provide maximum pull weight at an intermediate draw position.

Abstract: An arrow rest, movable to clear fletching on an arrow released from a bow includes a pivotal arrow rest pivoting to an upright arrow holding position for drawing the bow, and lowered to arrow clearing position, having a triggering control attached to an end portion of the bow responsive to movement of the bow limb after arrow release for moving the arrow holding assembly from the upright position to the lowered position. The triggering control includes a controllable counterweight, for adjusting the timing of arrow holding release.

Abstract: A cutting process in which a blade under tension is moved relative to a workpiece. The blade has a longitudinally-extending abrasive-holding portion defined by blade material that is softer than the workpiece to be cut and overlies a high tensile strength core. The abrasive-holding portion defines a cutting surface extending between opposite sides of the blade and defining less than one-half the total outer surface of the blade, and abrasive particles are partially embedded into a longitudinally-extending segment of the cutting surface but not into the sides of the blade.

Abstract: An indoor barbecue cooking device comprises a grill and a removeable oven cover so that the device can be used either as a barbecue grill or a barbecue oven. The device includes an electrically powered air blower which is selectively and automatically activated by either a thermostat or a photocell. When the device is used as a grill, the blower is automatically activated in response to the detection of an open flame by the photocell to blow the flame out so that the food is prevented from being burned. When the device is used as an oven, the blower is automatically activated by the thermostat when the selected temperature is exceeded, so that cooling air is blown into the oven to maintain the selected temperature.

Abstract: An efficient zero clearance fireplace, space heater is disclosed which is adaptable for installation in either mobile homes or permanent structures. The fireplace unit consists of a stainless steel firebox with an opening for access to the interior thereof. The firebox is surrounded by a first metal skin spaced therefrom which mounts glass doors across the opening. The outer surface of the top, bottom, sides, and back of the first skin are sheathed with an insulating felt. A second metal skin surrounds the first on the sides, back, and top. Outside air is circulated between the firebox and first skin, and heated thereby as the sole source of combustion air. This heated air is also circulated into the room through vents in the front of the first skin. Cool room air from the floor circulates upwardly between the first and second skins only to cool the unit. An optional damper and combustion air control is provided.