Abstract: An open-fronted refrigerated display case permitting shoppers direct access to goods displayed therein which also allows loading thereof by the movement of a loaded cart into a stationary location within the display case from the front direction or the rear direction, the case including a stationary housing which defines a refrigerated enclosure which further defines a front opening and a rear wall area and a case floor, the front opening having an air curtain extending thereover created by the passage of refrigerated air from air outlets along the upper edge of the front opening to air inlets along the lower edge of the front opening, also including an air circuit means to communicate the air from the inlet to the outlet and through the refrigeration device to form the air curtain from refrigerated air, also including a door means extending over at least a portion of the rear wall area with the remainder of the rear wall area covered by a curtain means, the door means being mounted within at least one track

Abstract: A neck-down bottle packing grid which eliminates glass to metal contact between the packing apparatus and the glass bottles which includes a plurality of partitions extending approximately parallel with respect to one another having guiding blocks, deflectors or doghouses of nylon or some other soft material equally spaced along the upper edges thereof, these deflectors being fixedly mounted upon deflector or doghouse mounts firmly secured to the upper edge of the partitions, also including a plurality of finger blocks extending downwardly on both sides of the partitions below each doghouse location, the finger blocks including two outwardly facing guide surfaces which taper downwardly and obliquely outwardly away from the partitions to define in combination with adjacent partition and guide surfaces a plurality of bottle receiving cells for sorting the downwardly moving bottles into an array for direct placement into a case or the like, in order to prevent glass to metal contact a plurality of covers of soft

Abstract: A boom is disclosed having an elongated flexible skirt confined between and secured to a series of floats arranged in pairs. The floats of each pair are identically formed, and are oppositely arranged at opposite sides of the skirt, to which they are secured in such fashion as to dispose the upper edge portion of the skirt above the water level. The lower edge of the skirt extends downwardly below the water level a suitable distance to confine pollutants, such as oil, floating upon the surface of the water. A tension member extends along the bottom edge of the skirt, in the form of a flexible cable. The tension member is retained in position through passage thereof within longitudinal bores provided in clamp assemblies regularly spaced along the length of the skirt. Each clamp assembly comprises complementary metal clamp elements, particularly shaped as to permit their being formed as extrusions.

Abstract: Articles having a non-skid surface of a roughened character and substantial thickness embody a base sheet having a roughened surface with particles of grit bonded thereto by metal which has been solidified in place in contact with the grit particles and base sheet and further bonded in place by an overlaying layer of solidified metal.

Abstract: A propulsion device is provided, designed especially for discharging tennis balls for practice purposes, at selected angles of inclination, and at a predetermined, selected velocity. Employed in the device is a distributor, which is disposed between a hopper and an air pressurizing drum, the distributor being designed to feed balls, one at a time, to the drum, at predetermined intervals.The distributor is disposed between the hopper and drum in such fashion as to cause the spherical objects to be efficiently agitated within the hopper, by passage over the exteriorly cylindrical surface of the drum while moving to the point at which the objects feed into the drum. Efficient agitation of the spherical objects within the hopper thus assures to the maximum extent that the distributor will be fully charged with said objects.

Abstract: A swimming pool is provided with side walls made up of a plurality of panels each embodying upper and lower receptor beams in the form of oppositely facing channels supporting the upper and lower horizontal edges of plywood sheets, with bracing members located between the vertical edges of the plywood sheets and secured at their upper and lower ends to the receptor beams so as to support each sheet about the entire peripheral edges thereof. The panels are secured together in selected arrangements by fasteners and splice plates at the adjacent ends thereof to establish a unitary structure of exceptional strength which may be made up of a limited number of inexpensive elements adapted to be assembled and erected with a minimum of labor.

Abstract: A board game having a board with an array of pockets or recesses in the upper surface thereof including magnetic bases located within the game board below each of the pockets, each magnetic base having a randomly selected magnetic polarity, the game including a plurality of round, magnetic playing pieces adapted to be placed in the pockets and having oppositely colored sides of opposite polarity, said pieces adapted to align themselves with either colored side oriented upward responsive to the particular polarity of the particular pocket in which located.

Abstract: A device intended primarily for removable connection to a vaulting pole as an aid in training athletes in the proper techniques of pole vaulting is adjusted longitudinally on a vaulting pole to a selected location in the area in which the vaulting pole would be grasped by the athlete. When the device has been properly positioned, it is secured fixedly, in the selected location, defining abutments spaced longitudinally of the vaulting pole to deter the user from sliding his hands together out of their proper, hands-apart relationship. The device is also adapted to be extended adjustably to a selected length so as to predetermine, in an adjustable manner, the longitudinal spacing of the abutments defined by the opposite extremities of the training device, thus to accommodate the device to the physical characteristics of the particular user. Calibrations are utilized on the device, so as to facilitate in a determination as to the most effective spacing of the abutments or extremities thereof.

Abstract: A refrigeration system including at least one compressor, a condenser for receiving hot gaseous refrigerant from the compressor and condensing same, a discharge line for supplying hot gaseous refrigerant from the compressor to the condenser, a plurality of expansion valves associated with a plurality of evaporators, a liquid line for passing condensed refrigerant from the output of the condenser to the expansion valves and evaporators, a return line extending from the evaporators to the input of the compressor to supply refrigerant thereto, a receiver for holding a reservoir of refrigerant, a bypass line connecting the receiver to the liquid line, a hot gas defrost means for selectively passing hot gaseous refrigerant through one or more of the evaporators for defrost and a balancing line operable during defrost responsive to a pressure within the receiver greater than within the discharge line to provide fluid flow communication therebetween to equalize refrigerant pressure between the receiver and discharge

Abstract: A method of making a bowling pin is disclosed, incorporating both injection molding and compression molding. The pin is formed in a split cavity, into which a core pin is extendable. The disclosed method includes the steps of first injecting a quantity of high density plastic material through a gate in such fashion as to cause it to strike a specially formed, concave distal end of a core pin while the core pin is slightly retracted. The molding operation is "programmed" in such fashion as to further insert the core pin following injection of a predetermined quantity of the plastic material, whereby the core pin compresses the previously injected material.

Abstract: A temperature sensing device including a conduit or tubular section acting as a condenser extending throughout the interior of a refrigerated environment such as a refrigerated food case with an evaporator section extending to a collection pot located remote from the condenser tube such as under the shelving of freezer cases, the entire tubular section being hermetically sealed with respect to the ambient and filled with refrigerant in fluid flow communication with the collection pot which serves as a reservior for the refrigerant, the refrigerant in the condenser section acting to assume the average temperature reading in the case environment and communicating the reading to the collection pot which has therein a sensing well located below the level of liquid refrigerant in the pot so that a temperature sensing probe, such as a thermistor device, when placed in the well will remotely and accurately monitor the refrigeration requirements of the food case to maintain a predetermined desired average temperature

Abstract: A ball projecting machine is provided with ball deflector for controlling the direction in which balls are projected from the machine. The deflector is movable from one position to another and is actuated by a ball being projected so that the direction of travel of successive balls discharged from the machine may be varied. The deflector has a mechanism for holding the deflector in a predetermined position until engaged by a discharged ball.

Abstract: A metallic fastener or insert of the type adapted to thread itself into a recess formed in a plastic work piece has a multiplicity of uniformly angularly spaced, longitudinally extending flutes, each of which is formed with a flat bottom surface and with flat side walls angularly related to define between them an included angle of about 60.degree. . The flutes are each formed to a depth greater than the root diameter of the external threads of the insert, that is, the flat bottom surface of each flute lies in a plane tangential to an imaginary circle of a diameter smaller than the root diameter of the external thread of the insert.In accordance with the invention, the opposite end portions of the insert are tapered frustro-conically. The external diameter of the insert at each of its tapered ends is smaller than the diameter of the mentioned imaginary circle, such that the opposite ends of each flute merge into the tapered end portions of the insert short of the extremities of the insert and there disappear.

Abstract: A rollable device, designed to be pushed by a blind person, has a plurality of sensors so spaced and so located upon a wheeled mount as to detect the presence of an object, step, or depression in the path of the user, and in so doing actuate electrical means designed to instantaneously inform the user of the presence of the potentially dangerous condition.The electrically actuated means includes vibratory devices in the handle of the device, so located as to acquaint a blind person with the locaton and nature of the dangerous condition in his or her path. Means is also incorporated in the device, in the form of a buzzer or other electrically actuated audible device, signifying the presence of objects such as automobile bumpers which are elevated above the ground surface and would therefore otherwise go undetected.Incorporated in the device, also, is a means actuable by the user for sounding a horn or the like for the purpose of seeking help or for warning others of his approach.

Abstract: A pressure control test apparatus which provides a simulation of various ambient operating conditions to a test unit such as an internal combustion engine and the like, the apparatus including a plenum chamber having air therein under closely controlled temperature and pressure limits, an intake blower for supplying air into said plenum chamber and an intake valve operable to modulate flow of air between the intake blower and the plenum chamber, an exhaust blower operative to exhaust gas from the plenum chamber and an exhaust valve positioned between the exhaust blower and the plenum chamber operable to modulate flow of gas therebetween, the plenum chamber further defining an inlet and an outlet, the inlet being connected to an intake conduit to supply air to the air intake of a test unit and the outlet communicating with an exhaust conduit for receiving exhausted gas from the test unit and returning same to the plenum chamber, also further including an exhaust gas cooler positioned within the exhaust conduit

Abstract: A heat transfer system including a thermally insulated tank defining a chamber therein which contains eutetic salt material for retaining high volumes of heat, the chamber inside of the tank is airtight with respect to the atmosphere, a conduit such as a pipe passes through the walls of the tank at two locations to provide a winding within the chamber such that as heated fluid is passed through the conduit, heat is retained by the eutetic salt material within the chamber, a portion of the walls of the tank having protruding sections which extend inward into the eutetic salt solution, the system including a heat sink adapted to be placed in thermal communication with the walls of the protrusions to withdraw heat selectively from the eutetic salt solution, a pump and sump system for recirculating the heated fluid from the conduit through a solar panel for heating and a blower and plenum area for passing air over the heat sink to provide a source of heated air.

Abstract: A method and apparatus for processing strip material including feeding a supply of unprocessed strip material from a coil thereof, passing the strip material through bending means for forming the strip material about small diameter bending angles to remove non-resilient materials from the surface thereof, stripping the sides and edges of the material by applying reversely rotating steel brushes to the sides thereof, scraping the sides and edges of the strip material by the use of abrasion surfaces such as sandpaper and the like which may be rotated in the opposite direction to the movement of the strip material through the processing equipment, apparatus for straightening the strip material by stretching and pulling it while extended about a group of rollers, and a winding station for pulling the strip material through the processing system and for rolling the processed strip material onto insulated conductor coils.

Abstract: Solvent-free hot melt compositions for use as sealants, adhesives, caulking compounds or the like are produced by intimately blending elastomeric polymers with tackifying resins and plasticizers to obtain products having a hardness at room temperature of at least about 5 on the Shore A Durometer scale while being sufficiently soft at temperaures of about 150.degree.F or higher to permit them to be easily extruded or otherwise applied. Adhesion promoters, lubricants, fillers and the like are preferably added to the composition to improve the properties thereof. The products are characterized by their stability over a wide range of temperatures, their resistance to oxidation and weathering, and their low moisture vapor transmission properties.

Abstract: A one-piece rectangular box having double reinforced corners at opposite ends thereof is formed from a single rectangular sheet of material having opposite end portions provided with sections which are doubled and folded inward and secured in overlying relation with respect to the central base portion of the sheet. The double portions extend upward from the inwardly folded sections to form reinforced end walls of the box. Side portions of the sheet extend upward from the base portions to hold the ends and sides of the box in place eliminating the need for dunnage or packing and cushioning means for protecting corners of the box and its contents.

Abstract: A burner for burning gasified liquid fuel such as oil, in which the fuel is gasified by being mixed with hot burned gases drawn from the combustion chamber, is provided in which the normal thermal stresses found in such burners due to the return of the hot burned gases for gasifying are substantially reduced and, at the same time, start-up time is reduced. Minimization of the thermal stresses is accomplished by utilizing the heat of vaporization of the oil or other fuel to cool the hot returning gases, and so limit thermal expansion, by having the gasification of the fuel commence at a pre-selected adjusted distance from the hot gas outlet of the burner, according to the particular application and ambient conditions in which the burner is installed. This permits elimination of a gasification chamber, which in some cases has been required to provide a preheating area for the oil, and so further reduces stresses.