Abstract: A guard for the circular saw blade of a circular sawing machine whose sawing unit has a horizontally supported saw spindle and is disposed on a frame of the machine so as to be vertically movable, the guard being arranged to cover the circular saw blade from above and at least partially on an accessible end face thereof and on the circumferential portion on an operating side, the guard forming a housing arranged to be mounted on the machine frame so as to be fixed relative to the circular saw blade and being open at its bottom only and, in its starting position, completely accommodating the circular saw blade, a downwardly extending elongate opening being disposed in a side wall of the housing to accommodate the saw spindle and being associated with a covering element arranged to move between a covering position, in which the covering element covers at least one region having disposed therein the circumference of the circular saw blade and being associated with the part of the elongate opening disposed beneat

Abstract: Control apparatus 24 for use with a pressure-flow compensated variable displacement pump assembly 10 for saving energy by limiting the power output of the pump 12 to the load requirements, or to the pump drive capacity, comprising a pressure regulated variable orifice means 52 through which the pumped fluid to load flows, the orifice means being responsive to changes in pressure of the pumped fluid from the pump assembly to vary inversely the effective area of the orifice means, the flow compensator 28 of the pump assembly functioning to hold the pressure drop across the orifice means constant so that the flow across the orifice means also varies inversely with the pressure to limit to a preselected value the horsepower supplied by the pump assembly to load.

Abstract: An adjustable hinge for an automotive vehicle seat assembly having a backrest member and a seat member and actuatable to incline the backrest member and a seat member about a pivot axis to any of a plurality of adjusted positions. The hinge comprises a pair of substantially coaxial and relatively rotatable members in which non-parallel slots are formed. A control member is mounted for movement axially of the coaxial members and has a projecting pin member extending into the non-parallel slots. Axial movement of the control member causes the pin member to move through the slots to pivot the coaxial members about a pivot axis to tilt the backrest member to an adjusted position relative to the seat member.

Abstract: A pallet consisting of a substantially flat body, a plurality of slots in the body and feet positioned in the slots. Each of the feet is readily molded from a suitable plastic and has an open upper end and a downwardly tapered cavity in which an internal support surface is formed. In stacking of pallets, the foot of the top pallet telescopes downwardly into the foot of the bottom pallet to a supported position on the internal support surface in which the pallet bodies are maintained in a spaced relation so that they can readily be separated when desired.

Abstract: Machining apparatus for machining a workpiece with a work-performing tool comprising a frame on which a tool carrier is mounted for reciprocal movement toward and away from the workpiece and a feed unit for moving the tool carrier between a partially retracted position and a fully retracted tool change position and for moving the tool carrier from the partially retracted position reciprocally through a machining stroke to machine a workpiece. The feed unit includes a drive transmitting assembly which is reciprocally mounted on the frame and which comprises extensible and contractible means connected to the tool carrier. A first drive means reciprocates the drive assembly while the extensible and contractible means remains fixed so as to move the tool carrier reciprocally through a machining stroke and a second drive means actuates extensible and contractible means to move the tool carrier between its partially and fully retracted positions.

Abstract: A remailable envelope having an envelope body formed of front and rear panels, a first closure flap on the front panel and a return closure flap on the rear panel which is folded upon itself and inserted into the envelope body during the first mailing of the envelope. A perforated line divides the front panel into upper and lower panel portions, address information for the first mailing being exhibited by the lower panel portion. The upper panel portion is detachable at the perforated line by the addressee to expose the second closure flap for its expeditious removal from the envelope pocket. The second closure flap is large enough to substantially cover the lower panel portion during remailing and exhibits the address of the second addressee. The detachable upper panel portion can have advertising imprinted thereon or form a response document such as an order form for use by the addressee in return mailing to the sender.

Abstract: A ballcock assembly adaptable for use in a variety of sizes and type of toilet flush tanks. The ballcock assembly comprises a standpipe having a ballcock valve at its upper end and having an adjustable height mechanism for varying the height of the ballcock valve in a toilet flush tank. The ballcock valve is a positive closing valve which includes a valve element movable to an open position against the pressure of the supply water by means of a valve actuating member that is pivotally connected to the standpipe and that is also connected to a float unit which surrounds the standpipe unit. The standpipe includes a hush tube which conveys water to the bottom of the toilet flush tank. The hush tube carries water distribution control means which functions to control the proportion of water delivered to the toilet flush tank and to the bowl refill.

Abstract: A swivel chair having a main screw connected to the chair seat and rotatably supported in a mounting assembly on the chair base enabling rotation of the seat relative to the base without varying the height of the seat. Height adjusting apparatus provides for the selective adjustment of the height of the chair seat and includes a nut member threadably mounted on the screw member. The nut member has a thread that is deformed into frictional engagement with the screw thread and when a seating load is applied to the nut member, the magnitude of the frictional resistance of the nut to turning on the screw is increased. As a result, rotation of the chair seat and the screw member will cause the nut member to rotate relative to the mounting assembly and remain fixed relative to the screw member to prevent an unintended varying of the height of the chair seat when it is rotated during use, while still enabling manual intended rotation of the nut when the chair height is to be adjusted.

Abstract: A trash collection, management and disposal system for an office area including covered trash collector containers positioned at heights substantially equivalent to the height of a standard desk top and adapted to receive trash generated in the area. Some of the trash collector containers are mounted on wheels and are equipped with tongue-and-hitch assemblies enabling a plurality of these trash collector containers to be coupled together in a train for towing to a dump site. Dump mechanisms at the dump site pick the trash collector containers up and invert them to empty the trash contained therein. The cover on each collector container is pivotally mounted by a hinge assembly enabling the cover member to be moved to an over center position when it is opened to inhibit its return movement to the closed position. Also, the hinge assembly operates to maintain the cover in an upright position when it is opened, allowing the cover to serve as a backstop for deflecting thrown trash into the container.

Abstract: A spring deck for supporting padding material in seating structures in which an open rigid frame is covered by a sheet of polypropylene fabric so as to provide both a cover for the frame and spring means to accommodate yieldingly loads that are applied to the surface of the sheet.

Abstract: The invention relates to a method wherein thin wires are three-dimensionally embedded in a uniformly finely undulating manner in the intermediate film of laminated glass by filaments of the same base material as the intermediate film with wire wound around them in stretched helical coil configuration being pressed into the film and made to disappear during the pressing procedure to form the laminate. Manufacture is simplified, economical and efficient. Also, better visibility conditions are obtained. The method is specially suited for the manufacture of heated panes for all kinds of transportation.

Abstract: A pallet having a generally rectangular body consisting of a honeycomb core enclosed within top, bottom, and side walls. Each of the side walls has at its upper end an upwardly and inwardly inclined portion and at its lower end a downwardly and inwardly inclined portion. Hollow tapered legs are provided at the corners of the pallet facilitate stacking of the pallets in a minimum space.

Abstract: A combination light fixture and acoustic conditioner assembly particularly useful in modular room enclosures wherein the ceiling is spaced above the enclosure walls. The invention provides for indirect lighting means and means for masking external sounds in the vicinity of the light fixture assembly. The assembly includes a reflector positioned so that light and sound waves contacting the reflector are dispersed in a plurality of directions due to the concavity of the reflector and undulations therein and eventually contact the ceiling where they are further reflected and spread. Dispersion of sound waves in this manner provides a pleasant, unintelligible sound which masks external sounds that might otherwise distract occupants of the modular room enclosures.

Abstract: Water is fed into a high temperature pressurized vessel containing hydrated large-port mordenite having a high Si/Al ratio and containing a cation that is selected from a specified group of metals and that is in its highest oxidation state. The high temperature causes an endothermic redox reaction that produces oxygen gas and, as a solid reaction product, a large-port mordenite wherein the metal cation is in a lower oxidation state. The solid reaction product is passed through a heat exchanger, where it is cooled and then into a second pressurized reaction vessel at low temperature whereby there occurs an exothermic redox reaction that produces hydrogen gas and which oxidizes the cation back to its highest oxidation state. The large-port mordenite generated in the second reaction vessel is passed through the heat exchanger, where it is heated, and then back into the first reaction vessel for recycling.

Abstract: A material handling system comprising a plurality of material-transporting lorries adapted to be pivotally connected end-to-end and a towing vehicle adapted to pull a train of connected lorries. Each of the lorries has a load-carrying body portion, end portions extending transversely of the body, and ground-engaging wheels arranged in substantially spaced pairs supported on the end portions. The towing vehicle has a low-profile rear section which can be moved under one of the end portions of the lorries between the wheels to releasably connect the towing vehicle and the first lorry. A projection extends upwardly from the rear section of the towing vehicle, into a recess formed in the front side of the lorry end portion and is maintained therein by a spring actuated abutment member which engages the back side of the lorry end portion. The projection and the abutment member thus cooperate to restrict relative horizontal movement of the towing vehicle and the lorry.

Abstract: An apparatus and method for converting standing trees to bolt length logs in which a tree-severing unit is mounted on a vehicle having an upright mast assembly extending upwardly from the severing unit. Tree-gripping and feeding assemblies are mounted on the mast and are operable to grip a severed tree and drive it downwardly. A tree cutoff unit is located below the gripping and feeding assemblies and is positioned above the severing unit a predetermined distance corresponding to the bolt length. Tree-delivery assemblies support and drive a severed tree rearwardly into engagement with the cutoff unit to first remove a bolt log from the lower end of the severed tree. The gripping and feeding assemblies are then operated to drive the remainder of the tree downwardly past a tree cutoff means on the mast assembly which cuts additional bolt length logs from the lower end of the tree. A conveyor removes the logs to a storage area on the vehicle.

Abstract: Ice skate-sharpening apparatus including a housing assembly carrying a vertically extending drive shaft on which a grinding wheel is mounted. Adjustable mounting means supports the housing assembly on a work table for vertical movement with respect to the work table to position the grinding wheel at a predetermined work-performing position above the work table. Drive transmission means connects the grinding-wheel drive shaft with a motor that is fixedly mounted at a position adjacent to the work table. The drive transmission means provides for the rotation of the grinding wheel in any of a plurality of vertical positions spaced above the work table. The housing assembly also carries a wheel-dressing tool which is simply moved to a wheel-dressing position.

Abstract: A portable shelter assembly adapted to be mounted in a folded condition for transportation purposes preferably on the top of a motor vehicle, and to be unfolded and distended while supported either on the vehicle or on the ground to provide a tent for shelter purposes. The assembly includes a pair of rigid base sections hingedly secured together at inner edges and foldable to define a container in which the remainder of the tent can be stored, and unfoldable to define a planar platform with upturned forward and after edges on which a flexible cover and frame members can be supported to provide accommodations. A simplified hinge arrangement for the base sections and the associated pivotally supported frame members is provided, and the flexible cover, when distended, provides for interior ventilation and improved exterior drainage.

Abstract: A filler insert for a wall baseboard assembly in a space divider system comprised of a plurality of interconnected upright wall panels. The baseboard assembly includes a plurality of side cover members arranged end to end along the lower edges of the wall panels with the side cover members each having a length substantially equal to the length of its associated wall panel. An opening is formed between adjacent side cover members at the juncture of two interconnected panels. The filler insert comprises a main body positionable in the opening so as to be flush with the adjacent side cover members. Coacting means on the main body and on the side cover members cooperate to maintain the filler insert in the opening.

Abstract: An acoustical-reflective ceiling panel for directing incident light from a remotely positioned light source toward a selected area and for attenuating ambient noise. The panel includes a plurality of pyramidal reflector units arranged in an array of rows and columns and a plurality of acoustical holes which trap the ambient noise to thereby reduce the noise level in the vicinity of the panel. The pyramidal reflector units each have reflective surfaces facing in different directions and are located in staggered rows in which the pyramidal reflector units in alternate rows form the columns. Light emitted from a light source positioned laterally with respect to the pyramidal reflector units is reflected off those reflective surfaces that face the light source onto the selected surface area.