Abstract: A greenhouse structure (No. 1 or No. 2) having a curved roof wall formed of two spaced-apart plastic layers (30 and 34) with troughs (32) at the lower sides thereof, and a circulation system including blowers (42,42') connecting the top of the wall and the ends of the troughs to an insulation storage receptacle (A) by means of ducts (38, 39, 40, 41, 43 and 44), whereby the roof wall chamber is selectively filled and emptied.

Abstract: A novel elastomeric composition of matter comprises a suitable elastomer, a masterbatch consisting of a silicone compound in an amount of from about 10 to about 50 parts by weight based upon the weight of the elastomer, titanium dioxide, and clay. A process for the preparation of a silicone-containing elastomeric composition of matter is provided and includes the steps of masterbatching a silicone compound, clay and titanium dioxide to form a dispersion, adding the dispersion to the elastomer and thereafter forming and curing a desired product therefrom. The composition is useful in the manufacture of rubber goods such as surgical and medical products which can be single or multi-layered.

Abstract: A novel elastomeric composition of matter comprises a suitable elastomer, a masterbatch consisting of a silicone compound in an amount of from about 10 to about 50 parts by weight based upon the weight of the elastomer, titanium dioxide, and clay. A process for the preparation of a silicone-containing elastomeric composition of matter is provided and includes the steps of masterbatching a silicone compound, clay and titanium dioxide to form a dispersion, adding the dispersion to the elastomer and thereafter forming and curing a desired product therefrom. The composition is useful in the manufacture of rubber goods such as surgical and medical products which can be single or multi-layered.

Abstract: A chlorinator (10) for chemically treating with tablets (T) water in a swimming pool having a water recirculating system with a pump with output and input sides including, a cannister (11) having a bottom (12), a top (13) with an opening (15) and connecting sides (14), a lid (20) for effecting fluid-tight sealing of the top opening of the cannister, an inlet (25) supplying water to the cannister from the output side of the pump, an outlet (40) transferring treated water from the cannister to the input side of the pump, a support (75) angularly disposed between the bottom of the cannister and the connecting sides to submerge a substantially uniform quantity of the tablets in the water, and a controller (45) adjustable relative to the cannister to establish the water level (L) in the cannister and supply uniformly treated water through the outlet.

Abstract: A radio signaling system (10) provides advanced warning of an approaching transportation vehicle to passengers within a plurality of predesignated pickup regions, thereby minimizing or eliminating the necessity of spending significant amounts of time at roadside pickup points awaiting the arrival of the vehicle. Radio signaling system (10) includes transmitting system (11) on the vehicle broadcasting a radio-frequency signal modulated with a plurality of low-frequency modulation signals having a code of unique frequencies and sequence for each predesignated pickup region. Radio signaling system (10) also includes receiving system (12) selectively adjustable to provide an alarm output signal only upon receipt of the unique low-frequency modulation code for the predesignated pickup region to which receiving system (12) is proximate.

Abstract: A combined lens cover (15) and sunshade (14) for a camera (10) having a generally tubular mount (11) extending around and outwardly of the lens (12) includes a ring (20) attachable to the tubular mount (11). The sunshade (14) is movable from a first position around the mount (11) to a second position outward thereof. The lens cover (15) is movable from a first position covering the lens (12) to a second position exposing the same. Means (34) are provided to connect the ring (20) to the sunshade (14) to maintain the lens cover (15) in its first and second position. Additional means (26) are provided to connect the ring (20) to the lens cover (15) to move the lens cover (15) from the first to the second position.

Abstract: A hold-down system for a membrane (10) covering a rigid framework and having catenary cables (11 and 12) secured to the bottom edges of said membrane between bays, said system having a retainer sleeve (19) comprising spaced-apart plates (21) connected by inclined side bars (22) and a wedge-shaped keeper plate slidable therein to wedgably hold overlapping loops (11' and 12') of the end portions of two contiguous cables (11 and 12) and flexible linear means (16) detachably connecting said keeper plate to a foundation anchor (15).

Abstract: The present invention relates to FRP members, the apparatus and process for making same. The FRP members are reinforced with helical strands of reinforcing material disposed in expanded helices of opposite hand, the helices of each hand being contained in discrete layers. The lead angle of each helix may be constant or varied along the length of the member independently of whether the member is cylindrical or tapered in order to provide the desired structural characteristics. The process comprises impregnating the reinforcing strands with resin and wrapping those strands onto a mandrel by apparatus in which relative rotational as well as relative translatory movement between the mandrel and a winding head may be effected to wrap the strands onto the mandrel. At least one relative movement may be selectively varied to effect the desired lead angle to the helically disposed reinforcing strands along the length of the mandrel.

Abstract: A hydraulic accumulator system comprising an accumulator tank (22) for storing hydraulic fluid supplied by a pump (P) from reservoir (10), the stored fluid being pressurized by gas from gas tank (28), a control tank (35)connected at one end to the fluid supply (10) and at the other end to the gas supply (28), and a piston (36) in said control tank (35) having differential areas exposed to said fluid and said gas, said piston having means (41) for actuating a switch (43) to control said pump (P).

Abstract: A die (12) for extruding an elastomeric ribbon (14) reinforced with laterally spaced longitudinal filaments (13), said die having mating die blocks (17 and 18) enclosing mating die plates (15 and 16) embracing a filament guide insert (25), and said insert being undercut at (38) to form a flat surface (39) having exposed grooves (42) which are extensions of the filament guide passageways (26), whereby the exiting portions of the filaments (13) are partially encapsulated with elastomeric material while in said grooves (42).

Abstract: Transporter or material handling apparatus for the controlled movement of goods includes two pairs of intersecting rails, a pallet for supporting the goods, a first group of wheels mounted on the pallet for rolling on one pair of intersecting rails, a second group of wheels mounted on the pallet for rolling on the other pair of intersecting rails, and a directional interchange in each of the intersecting rails permitting movement of the pallet in two angularly disposed directions therefrom. The movement of the pallet may be effected by a drive which engages the pallet for selectively propelling it in either of the two directions.

Abstract: A second stage building drum assembly (10) mounted on a rotatable drive shaft (15) for the application of belts and the like to a carcass includes a drum (12) rotatably carried by the drive shaft (15) for mounting a carcass (143) and first and second belt guide ply rings (13 and 14) reciprocably movable with respect to the drum. Further provided are means (30) for reciprocably moving one side (32) of the drum (12) with respect to the other (33) and, means (22, 23 and 96) for moving the first and second belt guide ply rings into engagement with the drum (12) for the application of at least one belt (154) to a carcass (143) mounted thereon.

Abstract: A bowling ball according to one embodiment of the present invention has a hollow member, or a member of less specific gravity than the mass of the bowling ball, disposed therein with its centroid displaced from the geometric center of the ball. The lighter weight member in the ball permits the use of a dense polymerizable composition for the basic mass of the ball. The ball is molded without the usual shell so that it has a resilient striking surface for maximum impact and pin carry. In another embodiment, a member of a higher specific gravity than that of the polymerizable mass is added generally on the same axis as the lighter weight member to increase the eccentricity of the ball and give it even more driving power upon impact with the pins. The member of higher specific gravity may be provided with pin members extending therefrom to the surface of the ball.