Abstract: Each alarm unit has a sensing circuit which supplies a signal in the presence of a particular problem such as smoke, heat, or equipment failure. The signal energizes an electronic switching device, to couple power to a horn which then produces an alerting tone. The output of the sensing circuit is also coupled by a resistor to electronic switching devices in the other alarm units in the system, so that the occurrence of a problem at one location activates the horn in each alarm unit.

Abstract: Apparatus for tracking a seam between two work members comprising a sensor including a housing with an insulating mounting board therein carrying two first ferrite cores and two second ferrite cores on the upper surface thereof, the two first ferrite cores being each curved in planes normal to the board and each having the faces at the ends thereof lying in a common plane with the first ones of the faces thereof in alignment along a longitudinal axis in the board, the two second ferrite cores being each curved in planes normal to the board and each having a first one of the faces at the ends thereof lying in the common plane and spaced laterally of the longitudinal axis equidistantly, two first coils wound around the first cores and connected in series aiding relation to two second coils wound around the second cores, a signal generator connected to the coils and means for comprising the combined permeabilities in the flux paths of each first core and associated second core with the other first core and its a

Abstract: A spring winder includes a base and a mandrel rotatably held against the base by a pair of mounting blocks which include aligned grooves in which the mandrel is seated. Each block is connected to the base by a pair of mounting screws which cooperate with associated compression springs for resiliently holding the mandrel between the mounting blocks and the base with a variable force. A length of spring wire is fed between a cam and washer rotatably mounted on the side of the base by means of an adjustment screw, the wire then being fed through an aperture in the adjacent end of the mandrel. The cam and washer are resiliently urged together by a compression spring for applying a drag to the wire which is variable by adjustment of the associated screw. A pin on the washer rides in a complementary groove in the cam for retaining the wire in position. As the mandrel is rotated the wire is wound thereon against the drag of the cam and washer to form a series of helical coils.

Abstract: An exercise pool for animals having an entry thereto and an exit therefrom with a hollow island mounted centrally thereof and extending upwardly therefrom, a filtering area and a solids pit in the island with a screen disposed therebetween, a skimming gutter at the upper end of the island having an inlet at the surface of the pool of water and an outlet to the solids pit, a pump for pumping water from the pool through the solids pit and the filtering area and back into the pool through the lower portion of the island, water filtering mechanism in the filtering area for filtering the current of water flowing therethrough, water treatment mechanism for treating the water flowing through the island to maintain the chlorine content and the pH thereof within predetermined limits, and a main drain in the lower portion of the island to draw water from the pool and upwardly to the solids pit when the water level within the island falls to a predetermined level; there also is disclosed a self-contained island for moun

Abstract: A system for cleaning large areas such as baseball parks and football stadiums and picnic areas and zoos, including a truck having a chassis, a refuse compactor mounted on the chassis for packing refuse into a small volume therein, a blower mounted on said chassis and constructed and arranged to draw air and entrained refuse into an inlet for the blower and to blow the refuse from the blower into the compactor, a substantial length of flexible hose having one end thereof connected to the inlet to the blower and a pickup nozzle connected to the other end of said hose, the pickup nozzle having an inlet end with an opening therein substantially greater in area than the internal area of the hose, the blower creating a stream of air entering the inlet end of the nozzle and carrying refuse therewith and along the hose and through the blower and into the compactor thereby rapidly to clean refuse from large areas and to compact the refuse into a small volume in the compactor.

Abstract: The torque of each club about its shaft measured with the club oriented at the angle at which it is used to address the ball is substantially the same as the corresponding torque of every other club in the set.

Abstract: The one-piece easel-support member comprises attachment means for attachment to the back of a picture frame, a stand hingedly connected to the attachment means, a flap, and a link hingedly interconnected to the attachment means and to the flap. The easel-support member also comprises latching structure which includes one latching element on the flap and two latching elements on the stand. The latching element on the flap is engageable with one of the elements on the stand to place the easel-support member in its storage position. The flap latching element is also engageable with the other latching element on the stand to place the easel-support member in its use position.

Abstract: An aquatic exercise facility for animals including a pool of water having an animal entry area and an animal exit area in alignment with a portion of the pool therebetween of a depth sufficient to require the animal to swim thereacross, mechanism for pumping water to establish a current from the animal exit area toward the animal entry area, the pumping mechanism having an inlet and an outlet for water thereto and a control for controlling the amount of water pumped thereby, a return channel for water disposed on either side of the pool for returning water from the animal entry area to the inlet to the pumping mechanism, and adjustable flow control structure disposed between the deep portion of the pool and the return channels for adjusting the rate of flow of water therebetween; also disclosed are directing vanes at the outlets from the pumping mechanism to direct the current to provide a higher velocity along the sides of the pool than in the middle thereof; there further is disclosed an improved water filt

Abstract: A rooting media in the form of a resilient, integral body of spongy open-celled hydrophilic polymer forming a first essentially continuous phase extending throughout the body and having passages therethrough forming a second essentially continuous phase extending throughout the body, a quantity of particles of soil mixture distributed throughout the body of spongy polymer and held thereby with a substantial portion of the surface area of the particles of soil mixture exposed and in communication with the passages, the exposed particles of soil mixture providing colloidal contact exchange surfaces in communication with the passages and having collectively a porosity maintenance capacity and a water holding capacity and an ion exchange capacity and a pH buffering capacity; also disclosed is a method of making such a body of rooting media, as well as a release agent useful in that method; there further is disclosed a particular form of rooting media for use in propagation by air layering and a method of propagat

Abstract: A device for producing multidirectional visual displays in which a refracting member having a plurality of elongated lens elements and a design member generally parallel thereto are rotated with respect to each other to provide multidirectional visual displays. The refracting member may be flat or arcuate to form spheres or cylinders so long as the design member is complementary in shape. Rotation is generally provided to the design member.

Abstract: An exterior room for a trailer in which front, rear and side panels cooperate with an external frame connected to the trailer body to provide an external screen room. The front and side panels are joined at the junctures thereof by zippers to provide entry and exit to the screen room. The front panel is maintained under tension by means of a cable between supports for the side panels. Each of the front, rear and side panels is provided with an envelope at the bottom thereof which contains a watertight container. Water in the watertight container provide ballast to prevent the panels from flapping in the wind.

Abstract: A device for communicating in which a hollow frustum extending outwardly from a flat base has tabs at the ends thereof for holding a relatively rigid diaphragm having spaced apart apertures therein. A pair of these devices are interconnected by a cord or string, whereby conversation or sound projected into one of the devices is reproduced at the other device. Two devices are molded as a single integral unit and merchandised as an in-pack item with children's breakfast cereals.

Abstract: A door closure apparatus is provided for automatically closing a bifold door of a storage cabinet for combustible materials in the event of elevated temperatures. A guide assembly hingedly mounted on the free end of the folding door includes guide fingers which ride along a guide path in a channel guide track at the top of the cabinet. At one end of the track there is mounted a bracket slidably carrying a latch member movable between a latching condition in the guide path and a release condition out of the guide path. The latch member is normally held in its latching condition by a spring and fusible link combination which override a smaller spring urging the latch member toward its release condition. Upon melting of the fusible link the latch member is moved to its release condition by the smaller spring. The latch member is shaped to permit the guide member to cam past it as the door moves to its open position but prevents return movement of the guide member to hold the door in its open position.

Abstract: There is disclosed a trophy plaque comprising a slightly flexible plastic base adapted to be supported in an upright position and having an obverse surface with a recess formed therein. A decorative member is adapted to be press-fitted into the recess, the decorative member in turn having a second recess in its front face for receiving therein an adhesive-backed indicia label covered by a lens press-fitted into the second recess.

Abstract: A system for introducing a predetermined amount of particulate matter to a continuous flowing stream of material. The system consists of a hopper connected via a tube having a screw drive positioned therein to a flowing stream of plastic material to be injection molded or extruded. The hopper and tube are constructed and arranged so that dye material in the hopper contacts only the hopper and the inside of the tube, thereby facilitating easy changing of the hopper and tube to permit the introduction of a different colored dye to the plastic material to be injection molded or extruded. The motor mechanism used to drive the screw can be swung out of the way to permit motors to be changed and also to permit the easy changing of both the hopper and the tube containing the screw drive.

Abstract: A multisport practice device for defining a target for and arresting the flight of a ball or other projectile includes a base supporting a pair of laterally spaced-apart upright posts carrying a net closing the space therebetween. Adjustable crossbar members carry eyelet screws for removably hanging the crossbars from vertically spaced-apart hook screws on the upright posts to define a variable-height target area.