Abstract: A metallic anti-intruder type gate, particularly adapted for use in windows offering access to a fire escape. The gate includes an outer frame element permanently installed within a window frame, and a hinged gate element supported by the frame and maintained in locked position relative thereto by a sliding bolt. The door is formed to include a rectangular peripheral frame and metal lattice which avoids adequate ventilation and light consistent with mechanical strength. The sliding bolt is shielded to permit access thereto for operation only from that side of the door facing the interior of the building in which it is installed.

Abstract: The grinding machine comprises a frame having an upper portion in the form of a stationary table for supporting a grinding-wheel carriage, and a bed provided with slideways for supporting the headstock and tailstock between which is mounted the workpiece to be ground. In order to facilitate drainage of water from the surfaces of the machine, the top uncovered edge surfaces of the bed are downwardly inclined towards the interior of the bed in which ducts are provided for collecting the water within a discharge chute.

Abstract: The invention relates to an apparatus for controlling a machine tool during the machining of a first workpiece to be matched with a second workpiece already machined. The purpose of the invention is that of solving the problem to obtain the desired play along the entire matching section. For grinding a shaft to be matched with a bore, the apparatus comprises two pairs of measuring heads which check corresponding diameters of the shaft and of the bore, near their ends, a control unit for correcting the shape error of the shaft, preferably after a spark-out phase and before finish-grinding, and a control unit which controls the finish phase for obtaining the desired play.

Abstract: An intricate profile is formed on the peripheral face of the grinding wheel of a surface grinder by moving two rotatable and differently shaped dressing wheels axially and sequentially across the face of the grinding wheel while shifting the grinding wheel vertically in timed relation with such movement to control the depth of cut of the dressing wheels into the grinding wheel. The dressing wheels are movable with the crossfeed carriage of the grinder while vertical movement of the grinding wheel during the dressing operation is effected by way of the wheelhead of the grinder. Both motions are controlled during the dressing operation by a computerized numerical control.

Abstract: For application to the working surface of a tool for grinding, lapping or polishing optical lenses; a base pad comprising a flexible carrier layer, an adhesive film on one side of the carrier layer by which the pad can be adhered to the working surface of the tool, and a friction-grip surface on the other side of the carrier layer adapted to frictionally grip the lower surface of a lens-working pad applied to it whereby the use of an adhesive between the two pads is avoided.

Abstract: A coordinated building layout which includes a restaurant and artist work/exhibit area is disclosed. The cooperation between the restaurant area and the artist work/exhibit area results in maximum efficiency and space utilization. The present system enables accommodation of a wide variety of art disciplines, including the performing arts, while contributing to enjoyment of the arts by the dining patrons of the restaurant.

Abstract: A double-wall greenhouse with flexible plastic walls is disclosed. The side walls and roof of the greenhouse form an integral tunnel-like shell about an unobstructed internal space. Opposite ends of the shell are closed by end panels. The inner and outer surfaces of the shell are formed by parallel inner and outer flexible plastic glazings which enclose the supporting framework of the shell. Similarly, each end panel has inner and outer flexible plastic glazings enclosing its supporting framework.The greenhouse can be built in any desired length simply by increasing the number of segments forming the shell. One segment includes two spaced-apart, parallel, upright archlike structural members whose lower ends are secured to opposite parallel sills. A sheet of plastic glazing extends along uninterrupted inner surfaces of the structural members from one sill member to the other. It is secured to the outer surfaces along its edges and ends and uniformly stretched between the members.

Abstract: A frame assembly for mounting between a pair of generally parallel members as four elongated frame elements each having two ends each having a longitudinally outwardly open recess. These elements are arrayed in a rectangle with two of the elements parallel to each other and lying against the members and the other two of the elements being parallel to each other and extending generally perpendicular to the members and forming corners with the other elements. Respective Y-shaped corner pieces are provided at the corners and each have a pair of generally perpendicular arms received in the respective recesses and a central leg. One of these arms of each piece is elastically deflectable toward and away from the other arm of the respective piece.

Abstract: A high stiffness siding for use on the exterior surfaces of buildings, particularly houses, in an overlapping pattern, is formed of unitary structural foam plastic, preferably polyvinyl chloride, with integral reinforcing ribs on its internal surface. The thickness of the siding is about 55-85 mils, with the ribs being about 25-65 mils thick; the density of the foam is about 0.85 to 1.15, except in the vicinity of the ribs, the ribs having a density of about 0.75.

Abstract: A trim strip holder 10 includes a channel 18 defined by parallel opposed first and second ledges 28, 30 and includes elongated first and second recesses 24, 26 located adjacent to and coextensive with the ledges 28, 30. A raised ridge 22 extends the length of the channel 18 and is disposed between the recesses 24, 26. A surface of the first ledge defines a notch 36 coextensive with the ledge 28. A surface 40 of the notch 36 is spaced from and parallel to a wall 42 of the second recess 26. A flat elongated trim strip 20 is positioned to seat within the notch 36 and the second recess 26 and is held in place by the ridge 22.

Abstract: The efficient drainage of flat roofs is facilitated by the inclusion in the construction of a flat roof of a drainage board, preferably of a bead material. The drainage board is provided above a water barrier layer and below a thermal insulation layer. Water falling on a flat roof passes readily through a protective layer of gravel or like material, through the abutting joints of the thermal insulation layer and through the drainage board. The water then flows on the water barrier layer to conventional water gulleys and downpipes.

Abstract: This invention relates to a sheet metal structural shape for use in building construction having a generally box shape with outwardly extending flanges at one end of the substantially parallel sides and inwardly extending flanges at the other end of the parallel sides forming turned inward ends of the inwardly extending flanges and a closure between the ends of the outwardly extending flanges closing the space between the sides at that end. The sheet metal structural shape may be advantageously used as a structural shape in deck structures and in wall structures according to this invention. One deck structure of this invention uses the sheet metal structural shape as a sub-purlin, or purlin on short spans, supporting insulation on the bottom outwardly extending flanges and having roofing material fastened to the inwardly extending flanges at the top end of the structural shape. Thus, a deck is provided with at least a major portion of the insulation beneath the roof decking.

Abstract: A concrete floor slab constructed from several basic prefabricated slabs. This slab comprises at least three basic slabs 1, 2 and 3 of polygonal shape, set together and arranged around a central point, with at least three anchoring units located at the central point each at least partially embedded in a basic slab, a central junction component located at the central point between the basic slabs and mechanical assembly methods for the central junction component linking it with the anchoring units.The invention applies to the construction of all types of load bearing floors and in particular those of wide span which rest directly on pillars without the intermediate use of joists.

Abstract: Wood trusses used in building construction which have reinforced chord members. The reinforcing is made of sheet metal steel strips which have nail-like teeth punched from their surface, which are pressed into the wood chord members along their entire length. The steel strips overrun the length of the truss slightly and the ends are used as a tie down means. The continuous steel strips may also be used as connector plates to attach the chords to the truss webbing. The steel strips also serve to hold the trusses in a pre-cambered position.

Abstract: Building frame units and building structures using such frame units as load-bearing wall sections or wall panels are disclosed. The frame units comprise hollow metal sections providing longitudinal frame members, end frame members and intermediate pillar frame members interconnected to form a rectangular skeletal frame. The top and bottom longitudinal frame members and the intermediate pillars are each composed of a pair of flanged channel sections assembled mouth-to-mouth and connected by C-cleats. The end frame members are each formed by a single flanged channel section having its open mouth presented outwardly. At least some frame units incorporate fittings such as windows and doors, but all residual spaces between adjacent frame members are closed by a sheet-like infill of plastics foam material providing a sealing and insulating barrier.

Abstract: The present invention relates to the field of roof coverings, specifically laminated roof shingles formed of mineral granule covered, asphalt saturated felt material. The disclosed shingle when combined with other shingles on a roof deck simulates a tile covered roof. This simulation is accomplished by making a generally rectangular laminated shingle having a headlap portion and an exposed butt portion made up of a regular uniform series of substantially identically shaped tabs with spaces therebetween defining exposed portions of an underlay member attached to the lower surface of the tabs. The lower edges of these tabs and spaces define a butt edge having a generally continuously curving sinuous contour. The tabs have generally straight sides which taper from this butt edge to the lower edge of the headlap portion. A plurality of such shingles are placed on a roof deck such that the tabs are aligned vertically up the roof deck and the spaces between these tabs are also vertically aligned.

Abstract: An apparatus and method for feeding sheet film material longitudinally from a roll and for forming and sealing the sheet into tubes comprising roller means for supporting a supply roll of film and for feeding the film, folding means at the edge of the film for folding an edge portion, forming means for forming the film into inner and outer tubes, bullet shaped shaping means for shaping the tubes and overlapping the sheet edges, and anvil and ultrasonic stylus means for engaging and fusing the overlapped sheet edges. The method includes feeding and shaping the sheet into tubes, overlapping the sheet edges, feeding the overlapped sheet edges between an anvil and an ultrasonically energized stylus and energizing the stylus to fuse and seal the sheet edges.

Abstract: A checkout counter for use in a retail merchant store or the like comprises a frame having a bagging station in which goods are deposited in bags, a bag making machine is located in the frame for making self supporting open bags from a web of self supporting bag making stock and a transfer mechanism is provided for transferring open bags from the bag making machine to the bagging station in an open configuration.

Abstract: An interchangeable mouthpiece bit for use with horses or the like includes a pair of spaced apart shank members adapted at one end thereof for connection to a structure for attachment to a horse's head and adapted at the other end thereof for connection to reins. A mouthpiece is attached to an intermediate portion of each of the shank members for insertion into the mouth of a horse. A connection for selectively detaching and re-attaching the mouthpiece to the shank members is provided so that one pair of shank members can be used with a plurality of different mouthpieces. The mouthpiece connection includes a post attached at one end thereof to an intermediate portion of each of the shank members. A post receiving member is connected to the ends of the mouthpiece for being slideable onto the post and extending around the post far enough to allow only slideable movement between the post and the post receiving member when the post receiving member is disposed on the post.

Abstract: A hay-type crop harvester has a chassis supported on the ground on wheels and normally displaceable along the ground in a predetermined travel direction. A crop cutter is mounted ahead of the wheels on the chassis and extends transversely substantially the full width of the chassis so as to cut a swath of crop and pass it backward. A central crop conditioner is provided on the chassis between the wheels thereof and two outer crop conditioners are each provided on a respective side of the chassis to respective sides of the wheels. An auger provided with oppositely directed screwthread formations at each of the conditioners transports the crop laterally so that after being cut in a single wide swath it is subdivided into three portions each of which is fed to a respective conditioner. Thereafter the portions may be laid down in windrows between and outside the wheels of the harvester.

Abstract: A hay harvesting machine contains a rake wheel whose housing is formed by an upper housing portion non-rotatably connected with a vertical upright shaft and a lower driven housing portion rotatably mounted at such upright shaft. In bearing bushings rotatably mounted at the lower housing portion there are retained tine supports provided with raking tines or prongs. These tine supports extend in an essentially horizontal plane and, by rotating the bearing portions, can be selectively shifted from a first operating position into a second operating position. In the first operating position the tine supports extend approximately in tangential direction and in the second operation position they protrude essentially in radial direction from the upright shaft. Each tine support is connected with a control lever engaging, by means of a control head or follower, into a control track or cam. This control track is located in a plane extending essentially perpendicular to the upright shaft, i.e. horizontally.

Abstract: A hay harvesting machine containing a rake wheel having a housing formed by an upper housing portion connected non-rotatably with a vertical upright shaft and a lower housing portion rotatably mounted at the upright shaft. The lower housing portion is revolvingly driven by means of a gear drive, typically bevel gearing. In the lower housing portion there are mounted tine supports so as to be pivotal about their lengthwise axis, these tine supports additionally being pivoted about a pivot shaft or axis extending transversely with respect to their lengthwise axis. This pivot axis is located in a plane which is approximately perpendicular to the upright shaft. The tine supports extend in tangential direction and, viewed in the direction of revolving motion thereof, extend rearwardly. For swath formation the tine supports are retained in a pivotal position where they are guided by means of a control head or follower in a control track or cam at the upper housing portion.

Abstract: A process and arrangement for the covering of a spinning carrier or foundation, in particular yarn, threads, filaments with fiber material, in particular wool, cotton, synthetic fibers, in which the spinning carrier is pulled past a collector drum for the fiber material at a spacing therefrom and into rotation. As the collector drum there is directly employed the pickup of a carding device, and the spinning carrier is pulled past in an axial direction at a distance from the surface of a pickup carrying the fiber nap of the fiber material.

Abstract: Methods of making network structures include forming on one side of a sheet of thermoplastic polymer a plurality of parallel continuous main ribs and forming on the other side of the sheet in a different direction a plurality of parallel discontinuous tie ribs. The tie ribs are discontinuous in the areas where they cross over the main ribs to eliminate any increased thickness at the cross-over points of the main ribs and tie ribs. The ribbed sheet thus formed is drawn in either one direction or in two preferably perpendicular directions to open the sheet into a network structure and to orient the main ribs and preferably also to orient the tie ribs.

Abstract: A novel swivel locking device is described comprising a swivel portion having a means for joining two members wherein at least one of said members includes two portions extending to form part of a loop, a detachable loop portion having two ends that fit together with said extending portions of said swivel member to form a closed loop, a rod member extending through holes in said extending portions and detachable loop portion to join said extending portions of the swivel with said detachable loop portion, and a fastening means for securing the position of said rod with respect to the extending portions and the detachable loop portion.

Abstract: A recuperated gas turbine engine control and method which provides improved idling and limits both turbine inlet temperature and recuperator inlet temperature to different, preselected maximum levels.

Abstract: A recuperated gas turbine engine fuel control valve and method which controls fuel flow during engine acceleration as a preselected empirical function of combustor gauge pressure and combustor inlet temperature, and which can also control fuel flow during deceleration without interruption of the combustion process.

Abstract: A closed loop control for starting a gas turbine engine is disclosed. Upon engine ignition, fuel flow is adjusted as a function of the difference between a desired torque and actual torque so as to provide an optimum schedule to accelerate the engine to the idle speed condition.

Abstract: A combined gas/steam turbine power plant is disclosed including a gas turbine having a combustion chamber and a steam turbine driven by steam generated with heat from the combustion gases of the gas turbine. The steam is utilized in a technological process downstream of the steam turbine. Relatively small fluctuations in back pressure are compensated by varying a delivery of fuel to the combustion chamber. Relatively large fluctuations in back pressure are compensated by supplying live steam directly to the technological process downstream of the steam turbine. Various devices are provided for conditioning the steam prior to being supplied to the technological process.

Abstract: A control system is disclosed for a hydrostatic transmission of the type including a prime mover driven variable displacement pump, the displacement of which is controlled by a pair of strokers (28, 30). Flow of pressurized control fluid from the charge pump to one of the strokers, and from the other stroker to tank, is controlled by a main control valve (34). The control system includes an auxiliary control valve (44) defining passages (98, 100, 102) communicating between the lines connecting the main control valve and the strokers. The auxiliary control valve includes an on-off, electro-hydraulic valve (46) which prevents flow through the auxiliary valve in response to an electrical signal in one condition, and permits flow in response to an electrical signal in another condition.

Abstract: A dust-boot for a vacuum booster, which is partly protruded into the driver's room, characterized in being provided with a noise preventing wall firmly formed in such a mode, that it covers the air-sucking hole(s) to prevent the air-sucking noise from directly reaching the driver's ears, through the formation of an air flowing passage between the wall and the outer surface of the dust-boot main body, which air flowing passage is different in the direction of the air flow from that at the air-sucking hole(s) and bent or wound at least once on the way.

Abstract: A desuperheater is disposed in a steam supply line supplying superheated steam to a shell and tube reheater.

Abstract: A method and apparatus for regulating a steam turbine comprising at least one resuperheater arranged between a high pressure section and a low pressure section and in which a reference-actual value comparison of the rotational speed is performed to produce an adjustment signal derived from the reference value actual-value difference which is delivered from the difference between the impeller casing pressure of the high pressure section and the output pressure of the resuperheater which feedback signal is coupled into the regulation circuit opposite to the adjustment signal.

Abstract: A power unit consisting of contrarotating axial flow compressor and turbine rotors in a closed cycle helium turbine engine with a centrally located scroll between the compressor and turbine sections (to duct the working medium into and out of the heat source) forms a compact, rugged engine providing lower weight and smaller envelope size for a given power.

Abstract: A thermoelectric cooler includes a base unit having an internal heat exchanger located on the upper surface of the base unit and an external heat exchanger disposed in a duct which is located in lower compartment of the base unit. A thermoelectric module transfers heat from the internal heat exchanger to the external heat exchanger. A fan located in the duct blows outside air through the fins of the external heat exchanger. The internal heat exchanger supports a pair of vessels containing liquid to be cooled. An insulated cover unit has a lower peripheral edge which contacts the peripheral lip of the base unit to completely seal the compartment in which the jugs are contained. Each vessel has a spigot which extends through a respective opening in the base unit from the lower portion of that vessel. A pair of stirring mechanisms extend through the top of the cover unit through the lids of the respective vessels to permit stirring of the fluid.

Abstract: A continuously refrigerated, automatically ejected block ice machine having means to measure and supply a specified amount of water to a water distributor which appropriately directs each measured amount of water to each of a plurality of product cells in which the ice is formed, the product cells, being an integral part of the evaporator of a refrigeration system. The water which is permitted to enter the bottom of the product cell forcing up the frozen block of ice where it is harvested. Upon the completion of the water entering the product cell, means are provided to remove water proximate the cell to prevent freezing. The operation is automated through each of the product cells, each cell filled with new water and ejecting the frozen ice block, the new water permitted to be frozen and the operation repeated.

Abstract: A control means is disclosed that is used with a closed refrigeration system having a chiller and a condenser to provide refrigeration to chill the fluid medium and a refrigerant pump for pumping the refrigerant through the system with refrigerant capacity control means determining the capacity of the refrigerant, the control means for the system using signal inputs representative of outside air temperature, return chilled water temperature, supply chilled water temperature, and condenser temperature, in which settable controllers are used to determine the optimum temperature signals for controlling the system at any given time. A timer is also connected to the control mechanism for alternately interrupting an optimum temperature signal to reduce the overall change in the control signal. Additional control may be obtained through the use of signals representative of humidity, strong solution temperature and cooling water output pressure.

Abstract: In a car-mounted air-conditioner driven by a mechanical power source provided on a car and capable of starting the operation for cooling or warming the air in the car room or cabin at a preset time under the control of a microcomputer, the microcomputer is interrupted at the preset time to be caused to compare the air temperature of the car room with a preset temperature and only when the air temperature is found to be outside a suitable temperature range, the microcomputer actuates the mechanical power source to start the operation of the air-conditioner.

Abstract: A system for directing a water spray onto the condenser unit of an air-cooled air conditioner in response to the operation of an air actuated valve when the air conditioner is energized; the air actuated valve is disposed in the exhaust air stream of the motor driven fan which normally creates a cooling air flow through the condenser unit of the air conditioner. The air actuated valve directs a stream of water from a line connected to a controlled pressurized water source to a water manifold provided with a plurality of branch conduits, fitted with spray nozzles, positioned to direct a water spray onto the condenser coils.

Abstract: A refrigerated horizontal drink box for merchandising soft drinks and the like is disclosed as including movable transparent doors covering individual compartments and brand name indicia carried closely beneath the transparent door disposed at such an angle to the door and to drink containers stacked horizontally in the compartment that positive brand name identification may be had without opening the door whereby advantageous advertisement positioning of the product is achieved and unnecessary opening of the door is avoided.

Abstract: A universal joint between a pair of members provides for transmitting torque between the pair of members when the pair of members are oriented at varying angles relative to each other. One of the members terminates in a cavity which is substantially cylindrical. The other member extends into the cavity and a pair of sockets cooperate with the other member to secure the latter within the cavity. The pair of sockets includes outer surfaces which substantially match the wall of the cavity to enable the pair of sockets to rotate in a first plane relative to the one member. The pair of sockets include projections which are received in an opening on the other member to enable the other member to pivot relative to the pair of sockets and the one member in a second plane substantially perpendicular to the first plane. At least one spring clip cooperates with the other member and the pair of sockets to bias the pair of sockets into engagement with the wall of the cavity.

Abstract: A flexible mechanical coupling for torque transmission is capable of being connected and disconnected by only manual manipulation. The collar of the coupling has diametrically opposed cutouts in its sidewall for loosely receiving complementally shaped resilient locking members which in turn are held in place by a sleeve telescopically disposed over the collar. Flats formed in the shaft beneath each cutout are engaged by the respective members for locking the shaft and the collar against relative rotation. A removable roll pin passing through the shaft and the resilient members restricts axial movement between the collar and shaft. The sleeve is releasably restrained in position over the locking members by a pair of manually removable elastic bands on the collar. One embodiment of the invention provides the manual connection feature for both shafts in the coupling, while in the preferred embodiment only one shaft in the coupling has this feature.

Abstract: An apparatus for stretching an animal hide, such as a beaver hide, to allow the hide to dry, the stretcher including a frame of four tubular members of equal length secured at a common point and extending in a common plane and spaced about 90.degree. from each other, a stretcher member for each of the frame tubular members, each stretcher member extending radially from the frame, each stretcher member having an arcuate outer circumferential portion, a plurality of spaced prongs extending from each of the arcuate portions adaptable to engage the periphery of an animal hide, and means of radially extending outwardly the stretcher members so that the hide is stretched and retained in a stretched position while drying.

Abstract: A device for locking a safety helmet to a vehicle such as a bicycle or motorcycle. A post extends from the motorcycle and has a pin-tumbler cylinder lock secured to it for receipt of the limbs of a clevis which extend through holes in the helmet so as to lock the helmet to the post when assembled together.

Abstract: Mechanical digital lock operable through a series of mechanical operations actuated by the depression of digital keys comprises an intellectual combination of essential mechanisms including a plurality of keys, digital selectors, identifiers, locking means and automatic resets. The lock cannot be opened unless the predetermined digitals are sequentially depressed. Once the lock is opened, it is automatically reset. A change of combination of digitals can easily be manually effected without any tool. With its novel structure, it is highly reliable.

Abstract: A method for controlling the temperature of a workpiece in a hot strip mill includes calculating temperature changes of the strip at each mill stand location by determining changes in workpiece deformation resistance and correlating the changes in deformation resistance to changes in temperature. Error corrections are made for changes in rolling speed. The calculated temperature change at each mill stand is used to control water sprays positioned adjacent the mill stands. A temperature sensor is placed downstream of the last mill stand to act as a check on the desired delivery temperature of the workpiece. Temperature discrepancies from the temperature sensor are fed upstream to modify temperature corrections.

Abstract: The frame (2) of a rolling mill has a U-shaped mounting (12) for receiving and locating rolling stands (8). A pivoted limb (12a) of the mounting can be swung down to form a bridge between the frame (2) and a change-over trolley (5) for the purpose of transferring the stands between the frame and the trolley by means of draw-and-thrust-rods 15.

Abstract: A method of producing a corrugated annulus is disclosed which has substantially radial folds therein, the method consisting essentially of forming in one continuous straight piece of metal a curved or arcuate head for a reel or the like which method consists in forming a number of radial folds extending from one edge of the strip to the other, the radial folds being of variable depth decreasing from the inner to the outer periphery of the formed annulus.

Abstract: A method for making a centrosymmetrical spider of a universal joint by extrusion molding involves pressing both end faces of a cylindrical blank the same distance towards the center of the blank to force the blank material radially outwards from the center of the cylindrical blank in a stream which is symmetrical relative to the two end faces and into a cavity of a split mold.Also disclosed is a molding apparatus for practicing the method. The apparatus includes a floating mold. One end of the apparatus can be rigidly fixed to a press for operating the punches which provide the extrusion pressure.

Abstract: Metal stock is forged into a blank consisting of a rod-like shank joined at one end to the inner ends of a pair of forks having enlarged flattened outer ends projecting laterally of the forks in the same direction and provided with pin-receiving openings. One fork is aligned with the shank and the other fork extends laterally away from the shank and then outwardly, with its enlarged end projecting toward the other fork. Both forks are then twisted in the same direction to turn their flattened ends approximately 45.degree. into spaced parallel planes, and the longer fork is bent to move its flattened end into a position in which its opening is axially aligned with the opening in the other enlarged end.