Abstract: A substantially pure benzoic acid ester of isostearyl (C.sub.18) alcohol. The composition of this invention has unique properties in that it is non-greasy, has a low cloud point and pour point, is practically odorless, has low toxicity, and is stable. These properties make such composition useful as a vehicle or carrier, emollient or solubilizer for toiletry and cosmetic formulations, e.g., hair cream, hand cleaner, bath oil, suntan oil, brilliantine, anti-perspirants, perfumes and colognes, cold creams, electric pre-shave, eye and throat oil, fingernail polish, topical pharmaceutical ointments, lipsticks, stick rouge, skin lotions and creams, skin moisturizers, cleansing creams and after bath splash and lotions.

Abstract: The benzoic acid ester of an alcohol which is selected from the group consisting of (A) at least one C.sub.2n branched primary alcohol, wherein n is 5 through 9; (B) at least one C.sub.2m+1 branched or linear primary alcohol, wherein m is 4 through 9; and (C) mixtures comprising at least 40% and preferably at least 60% by weight of the members of (A) and (B), with one or more linear primary alcohols of even carbon number chain length. The benzoic acid esters are useful in skin care compositions, e.g., hand cleaners, bath oils, suntan oils, anti-perspirants, perfumes, colognes, cold creams, electric pre-shaves, eye and throat oils, topical pharmaceutical ointments, lipsticks, stick rouges, lotions, skin moisturizers, cleansing creams or after bath splashes or lotions.

Abstract: A crystal plating device and method thereof in which a crystal to be plated and thereby set at a desired frequency is placed in an external removable holder or slug for insertion into a chamber of a plating device. The device is connected to a vacuum pump which is activated after the slug is loaded. Spring loaded filament posts carry a filament of precious metal such as gold or silver. The crystal is oscillated at a predetermined frequency prior to the filament being energized to evaporate or atomize the metal which plates the crystal and sets it frequency identical to that of the oscillator.The slug is externally loaded and can carry different size crystals. It is fitted with masks to accurately direct the deposit of the metal upon either or both sides of the crystal. After plating the slug is easily removed from the plating device.

Abstract: A substantially pure benzoic acid ester of a mixture of alcohols. The mixture of alcohols consists essentially of (A) at least one C.sub.12 or C.sub.14 primary alcohol and (B) at least one C.sub.13 or C.sub.15 primary alcohol. The weight ratio of the even carbon number alcohols (A) to the odd carbon number alcohols (B) is from about 0.25:1 to about 4:1, preferably from about 0.5:1 to about 3:1. At least 70% by weight of each alcohol is linear and substantially all of the remainder of each alcohol is branched at the two carbon position. The compositions of this invention have unique properties in that they are substantially non-greasy, lack oiliness and greasiness, have low cloud points and pour points, have a bland odor, low toxicity, and are stable. The properties make such compositions useful as a vehicle or carrier, emollient or solubilizer for toiletry and cosmetic formulations, e.g.

Abstract: An energy recovery device can be installed in the exhaust of heat producing equipment. The device includes a conduit having a main and bypass chamber. Also included are fluid conducting coils which are mounted within the main chamber for passing fluid therethrough. A relief device operates to connect in parallel the main and bypass chambers in response to a differential pressure therebetween exceeding a predetermined magnitude. Therefore it is estimated that approximately 50-85% of wasted energy through the flue pipe can be recovered and utilized for said system depending upon the size of the unit.

Abstract: A separating chamber for a magnetic separator is disclosed, which separating chamber includes a canister having at least one inlet and at least one outlet and a fluid-permeable magnetisable packing material within the canister. When feed material from which magnetisable particles are to be separated is supplied to the inlet(s), it passes into the packing material by way of a fluid-permeable partition which serves to distribute the feed material over a large area within the packing material. By virtue of an externally applied magnetic field, magnetisable particles within the feed material are magnetically attracted to collecting sites within the packing material. So as to mitigate the effect of fluid passing through apertures in the partition which tends to produce high velocity jets, thereby prejudicing the separation efficiency, the partition is double-walled, the two walls being spaced slightly apart and being apertured.

Abstract: A stud tensioner device which connects to a engaging member integral with or connected to a stud to be placed in tension to permit a nut on the stud to be tightened. The stud is usually in a high pressure application such as a pipe line or various types of pressure vessel. The device for connecting to the engaging member is a cam actuating and clamping assembly having multilayers and partaking of translatory motion wherein the motion of one component translates into a different motion in another component. The device includes an actuating sleeve helically slotted to receive cam pins which pass through an axially slotted stationary ring to be received in one of two inner camming rings which are axially shifted by the pins responsive to rotation of the sleeve. Rotation of the actuating sleeve will cause the camming rings to move into and out of engagement with cam followers formed on or attached to a four segment clamp which is thus moved into and out of locking engagement with the engaging member.

Abstract: A tubular valve for controlling the flow of fluids includes an outer tubular shell having pairs of ports on diametrically opposed surfaces and an inner coaxial transfer tube having pairs of openings which are selectively rotated into or out of alignment with the outer tubular ports. Deformable grommets enclose and seal the space between the outer shell and inner tube and provide lateral tubular extensions projecting through the outer ports for connection to external sources and apparatus. The inner transfer tube, which is rotatable within the grommets, provides communication for fluid flow between inlet and outlet ports and openings. Different fluids may be selectively controlled and supplied through separate outlets.During assembly, each deformable grommet is folded around an insertion device which is inserted into the outer tubular shell and twisted to release the tubular extension which projects laterally from the port.

Abstract: A system for pumping an abrasive or corrosive fluid at high pressure and with a variable delivery rate. The system comprises raising the pressure in a non-corrosive and non-abrasive liquid in a pressure raising means comprising pump means and at least two intermediate cylinders containing floating pistons. The pressure is transferred to the abrasive or corrosive fluid in pressure transfer vessels. A valve arrangement controls the flow of non-abrasive and non-corrosive liquid to the intermediate cylinders and return means are provided for returning the floating pistons after each stroke. The valve arrangement is controlled in dependence on the positions of the floating pistons in their intermediate cylinders.The system is particularly useful for supplying clay slurry to a high pressure plate filter press.

Abstract: A size-adjustable high performance slip-on plastic roller skate has an injection-molded sole support piece in the form of separable front and rear sections respectively provided with wheel assemblies secured thereto. The sections are slidingly interfitted for movement toward and away from each other to vary the longitudinal extension of said sole support piece and can be locked at a plurality of the adjusted interfitted positions to enable accommodation of a plurality of shoe sizes. A metal reinforcing frame member is molded into one of said front and rear sections and extends within at least the interfitted portion of said sections, to bridge said portion at all size-adjusted positions, whereby to provide rigidity for the skate, enabling use of same in high performance applications.

Abstract: A bag suitable for containing material in bulk comprises a side wall, a bottom panel and a cover, all of woven material. The upper part of the side wall is provided with at least three lifting loops attached to the side wall at locations where the material of the side wall is folded to provide at least two overlapping layers. Each lifting loop comprises an opening and two legs. The two legs are secured together contiguously to form a double thickness which is secured to the overlapping layers, and at least one leg of each of at least two of the lifting loops extends substantially to the bottom of the side wall.

Abstract: A tube pressure filter is provided with a filter element comprising a filter cloth sleeve which is tailored from a woven material so that the warp and/or weft filaments extend helically around the inner tubular body on which the filter element is supported whereby the filter cloth sleeve can be stretched transversely of the length thereof.

Abstract: A process for concentrating mica in a mixture of sand and mica is disclosed, which comprises introducing the feed mixture of sand and mica into an upper part of a density separating vessel in which is provided a rising current of an aqueous medium, the velocity of the current being uniform or substantially uniform over a horizontal cross-section of the vessel and being such that all but the least buoyant particles of the mixture are held in suspension as a bed which is gently displaced upwards in the vessel by incoming feed mixture; and passing a slurry which overflows from the vessel over a screen having an aperture size in the range from 210 .mu.m to 500 .mu.m (No. 72 mesh to No. 30 mesh B.S sieve), there being retained on the screen a mixture of sand and mica having a higher percentage content of mica, as calculated in the dry state, than the feed mixture.

Abstract: A system for cleaning dust collecting filter bags with pulsed air includes a plurality of rectangular channels positioned below a tube sheet supporting rows of filters. A short length of pipe connects the channels through the tube sheet to the top of a venturi within the open end of each filter bag. A source of compressed air periodically supplies pulses of air through the channels and openings in the pipes to force air through the center of the venturis and bags in a reverse direction to clean the filters. The channels are preferably positioned between pairs of filters to clean two rows at the same time for greater efficiency, while providing permanent added structural support for the tube sheet.

Abstract: A method is disclosed for processing a natural calcitic ore to yield a finely divided calcium carbonate particulate of very high brightness characteristics. The natural calcitic ore is initially coarse-milled to produce a product wherein no more than 5% by weight of the particulate is +325 mesh, and no more than 35% by weight of the particles are of less than 2 microns E.S.D. This coarse-milled product is then subjected as an aqueous slurry containing less than 40% and preferably less than 30% solids by weight, to a froth flotation, which separates with the froth the relatively coarse colorbodies liberated in the initial grinding. Preferable compositions for use in the froth flotation comprise 1-substituted-2-alkyl imidazolines or the salt derivatives thereof, with such compounds being utilized in admixture with a substantially non-polar aliphatic compound having from 10 to 20 carbon atoms in its longest straight chain.

Abstract: Fluid or semi-fluid compositions of matter are disclosed for functional application to the human body as toiletries, cosmetics, topical pharmaceuticals and the like. The said compositions include as a vehicle or carrier, the benzoic acid esters of a mixture of C.sub.12, C.sub.13, C.sub.14, and C.sub.15 linear primary alcohols together with a functionally effective quantity of a substance carried by the said vehicle, which substance is either dissolved or emulsified with the vehicle. The alcohol mixture may comprise by weight from about 13 to 31% of said C.sub.12 alcohol, 28 to 44% of the C.sub.13 alcohol, 17 to 40% of the C.sub.14 alcohol, and 12 to 19% of the C.sub.15 alcohol. The compositions of the invention, when applied to or spread upon the skin, produce a dry, non-greasy, lubricating and satiny feel.

Abstract: A composition which is hydrophobic but possesses excellent wettability comprising a copolymer of a polysiloxane and an ester of glycidyl alcohol and an organic acid. This copolymer is suitable for the manufacture of ocular membranes worn in contact with the eye which present excellent oxygen permeability and which can be worn for extremely long periods of time and then disposed of.A method of preparing the ocular membranes is disclosed, in which the composition is placed between disposable molds and cured therein. The cured, mechanically and optically finished ocular membranes are recovered by the destruction of said molds and without secondary operations.The ocular membrane is a flexible, oxygen-permeable, membrane, adapted to be inserted on the eye and worn thereon continuously for periods of more than one month.

Abstract: Magnetic separator apparatus is disclosed including means for establishing a magnetic field in a predetermined zone, a separating chamber provided with an inlet and an outlet for fluid, fluid-permeable and magnetisable packing material disposed within the separating chamber, a compensating element incorporating ferromagnetic material coupled to said separating chamber, and means for moving the separating chamber and the associated compensating element between a first position in which the separating chamber is within the predetermined zone and a second position in which the separating chamber is outside the predetermined zone. The magnetic field interacting with the compensating element generates balancing forces reducing the force required to move the separating chamber between its two aforesaid positions.

Abstract: In order to determine the proportion of particles of less than a predetermined size in a fluid suspension, the fluid suspension is placed in a vessel (1) and is thoroughly mixed therein by mixing means (36,37). A sample of suspension is then withdrawn from a predetermined level within the vessel (1) by means of a sampling tube (9) and is transferred by way of a flexible tube (22) to a container (15). The particle concentration of this sample is then monitored by passing x-rays from a source (17) through the container (15) and detecting the emerging x-rays with a detector (18). The sample is then drained from the container (15). After allowing the suspension in the vessel (1) to settle for a time sufficient to enable particles of said predetermined size to sink from the surface of the suspension to said predetermined level within the vessel (1) according to Stokes' law, a further sample of suspension is withdrawn from said predetermined level and transferred to the container (15).