baber/WOPTO huggingface dataset:
Patent GB-1147167-A (GB)
Title: Method and apparatus for separating a polymer from a solvent
IPC: C08J3/14
Filed: 1966-09-19
Abstract: 1,147,167. Separating polymers from solutions. PETRO-TEX CHEMICAL CORP. 19 Sept., 1966 [17 Sept., 1965], No. 41799/66. Heading C3P. A process for separating polymers from solvents comprises extending the polymer solution at a positive pressure into an area of reduced pressure so as to run said polymer into a filament and to partially volatilize said solvent and subsequently particulating said polymer filament by causing said filament to impinge against a surface in such a way as to volatilize further solvent. The surface may be an arcuate surface defining an arc of at least 45 degrees. The filament may be passed through an area of heated gas at reduced pressure to aid volatilization of the solvent, and may be accelerated before impinging on the surface. The polymer may be a polymer of propylene, butene, isobutylene, pentene, heptene, styrene, 3-phenyl propene-1, 3-phenyl butane-1, 4-phenyl butane-1, butadiene, isoprene, chloroprene, bicyclo (2,2,1-heptene-2) or cyclopentadiene prepared in the presence of a supported chromium oxide or "Ziegler" catalyst. The solvent may be a hydrocarbon or halogenated hydrocarbon, and may be excess monomer. Apparatus suitable for carrying out the process of the invention is described and illustrated, and examples describe the separation of particulate polymers from solutions of (1 and 2) polybutene-1 in butene-1, (3) isotactic polypropylene in propylene, (4) cis polybutadiene in butadiene, and (5) polystyrene in styrene, polyisoprene in isoprene, polyvinyl chloride in vinyl chloride and neoprene in chloroprene.
Patent GB-931726-A (GB)
Title: Method and apparatus for moulding heat-curable articles
IPC: B29C35/02
Filed: 1959-12-09
Abstract: 931,726. Rotary mould table machines. DUNLOP RUBBER CO. Ltd., and A. A. JOHNSON. Dec. 9, 1959, No. 41873/59. Class 87(2). An annular article e.g. a grommet, of thermoplastic material, is produced by feeding said material in strip form between a pair of axially separable dies which together form the profile of the article and a central die which forms the inner periphery of the article, assembling the dies, and thereafter separating them to release the article. Two parallel strips 15 formed by cutters 14 from a layer 13 are fed on either side of a central die D tangentially between heated pairs of forming dies 25, 26 on part 18 of drum 16. Die 25 is forced towards die 26, sections of strips 15 cut out under the action of cam follower 23 in cam 30, and the die cavity maintained resiliently closed by spring 35. The grommet R is formed with a recess around its periphery and after semicuring, die 25 is retracted and die D bearing the grommet is first moved horizontally away from die 26, and then radially to release the grommet under the action of cam follower C bearing on cams C 1 , C 2 . Alternatively the die D may first be retracted radially and the grommet removed on separation of dies 25, 26, and a washer &c. may be incorporated in the grommet by being located on die D before moulding, Fig. 7 (not shown).
Patent GB-858716-A (GB)
Title: Improvements in an accessory device for surface treating apparatus
IPC: A47L13/502
Filed: 1957-03-22
Abstract: 858,716. Floor polishing machines. ELECTROLUX Ltd. March 22, 1957 [March 29, 1956], No. 42173/58. Divided out of 858,712. Class 138(1). A cleaning device for the brushes of a floor polisher consists of a box 137 shaped to receive the outer contour of the machine. A dished member 139 has projections 141 with teeth 142 which clean the bristles as they are rotated. Inner member 139 may be provided with a handle or finger grips such as circular openings 144 and the beaded edge of box 137 may be used to support the weight of the machine.
Patent GB-1200194-A (GB)
Title: Relay latching circuit using transistors and fast and slow acting relays
Inventor: CALKIN EDWIN THEODORE
IPC: H01H47/04
Filed: 1967-09-19
Abstract: 1,200,194. Protective arrangements. WESTERN ELECTRIC CO. Inc. 19 Sept., 1967 [21 Sept., 1966], No. 42566/67. Heading H2K. [Also in Division H3] Faults in a load 30, of the type requiring a fast power cut-off in the event of such faults, are sensed by current-sensing network 31 which provides a short pulse to transistor 13 to turn it on and hence operate fast acting relay 11 to cut-off the power to the load. Operation of relay 11 also supplies latching current through concontacts 11-1 and transistor 18 for transistor 13, maintaining transistor 13 conductive even after the cessation of the pulse from network 31 so that slow acting relay 12 eventually energizes to close contacts 12-1, thus latching the circuit, and also operating contacts 12-2 . . . 12-5, to cut the current to power-on indicator lamp 32, complete the circuit to fault indicator lamp 33, and to perform other switching operations. The circuit is reset by momentarily opening switch 14. In Fig. 4 (not shown), a number of latching circuits are connected in parallel, each circuit having a slow relay, but there being a single fast relay common to all circuits. When an input signal is received at any one circuit, the fast relay and consequently the slow relay of the one circuit are energized, and operation of all the other circuits is inhibited, the inputs of all these circuits being connected to the negative terminal of the battery through the conductive emitter-collector path of the transistor 13 of the one circuit.
Patent GB-1083307-A (GB)
Title: Laminates
Inventor: HALE EDWARD CHALONER
IPC: B32B27/00
Filed: 1964-10-20
Abstract: 1,083,307. Laminates. DOMTAR Ltd. Oct. 20, 1965 [Oct. 20, 1964], No. 42639/64. Heading B5N. A laminate comprises a plurality of resinincorporating plies pressed together under highpressure laminating conditions, and a protective polypropylene film overlying a surface of the laminate, the polypropylene film being strippably adhered to the surface during pressing to form the laminate. The resin-incorporating plies may comprise phenol-formaldehyde impregnated core sheets, e.g. of Kraft paper, and at least one melamine-formaldehyde impregnated cover sheet, e.g. of alpha-cellulose paper. A polypropylene film may be provided on each side of the laminate. To form laminates a polypropylene film is applied to the surface of a laminating layup comprising the resin-incorporating sheets, and a plurality of such layups is placed into a press with caul plates between adjacent layups. The layups are then pressed at a pressure in the range 300 to 200 p.s.i., preferably 750 to 1400 p.s.i., and at a temperature in the range 100‹ to 180‹ C., preferably from 120‹ to 160‹ C. If desired a textured surface may be provided on the laminate by placing a suitable formation sheet between the caul plate and the polypropylene film. In an alternative method of pressing no caul plates are used. Instead of using phenol-formaldehyde or melamine-formaldehyde as resin in the core sheets, other resins, e.g. urea-formaldehyde resins, epoxy resins, polyester resins and polyvinyl chloride, can be used. Since the polypropylene film tends to shrink during laminating the film used is slightly larger than the laminate being produced.
Patent GB-1271811-A (GB)
Title: Process for obtaining helium and hydrogen by permeation
IPC: C01B3/50
Filed: 1969-08-28
Abstract: 1,271,811. Separating helium and/or hydrogen by diffusion. MESSER GRIESHEIM G.m.b.H. 28 Aug., 1969 [12 Sept., 1968], No. 42891/69. Heading B1L. Helium and/or hydrogen are separated from a gaseous mixture by contacting the mixture with bodies each having an external diameter of from 100Ám to 1mm and comprising a hollow porous support coated externally with a glaze of non-porous glass. The glass allows diffusion of the helium and/or hydrogen into the bodies whence the gases are collected. The bodies may be in the form of capillaries or spheroids. As shown the bodies are parallel capillaries 2 closed at 9 and having their open ends projecting through an intermediate ceramic plate 1. Warm crude gas enters at 7 and flows past deflectors 8 to contact the capillaries 2 whereupon the helium and/or hydrogen diffuse through the glaze into the capillaries and are withdrawn via the open ends by means of suction. Crude waste gas exits at 10.  In another form the bodies are hollow spheres enclosed in a chamber. Warm crude gas contacts the spheres with the resultant diffusion. The chamber is blown out, rapidly cooled, e.g. by a helium-containing cooling gas, and evacuated. The bodies are then rewarmed so that the helium and/or hydrogen can be desorped and collected. The porous support may be a glass ceramic or a porous sinter ceramic. The glass glaze may contain at least 75% of one or more of silicon dioxide, aluminium: oxide, boron trioxide or phosphorus trioxide.
Patent GB-1365614-A (GB)
Title: Centering of lenses
IPC: G01B7/312
Filed: 1972-09-15
Abstract: 1365614 Grinding lenses ERNST LEITZ GmbH 15 Sept 1972 [27 Sept 1971] 42917/72 Heading B3D A method of manufacturing a lens 20 comprises centring the lens between two components 1, 2 of a rotary work-holder by urging the components toward one another and applying mechanical vibrations at an ultrasonic frequency to at least one of the components in dependence upon the pressure exerted by the components upon the lens. In apparatus for carrying out the method, the components are in the form of holders 1, 2, the holder 2 being movable along its rotational axis by a screw or hydraulic cylinder, and the holder 1 being formed with a piezoelectric element 3 of ceramic material which is activated by a source 4 having an ultrasonic frequency generator. The source drives the element through an amplitude modulator 6 and coupling capacitor 7. The modulator is connected to a control voltage U 1  controlled by a switch 14 in a line from a charge amplifier 13 connected by a low-pass filter 11, 12 to the element 3 and through a discriminator 15 to a relay 16 controlling the switch 14, a switch 17 or a contact 18 actuated when the holder 2 is lowered resetting the bi-stable switch of the discriminator. The element 3 acts both as a vibrator and pressure sensitive pick-up to convert pressure forces into proportional electrical signals. Initially, the holders 1, 2 are apart and switch 14 is closed and as the element is not under pressure the control voltage is zero. As the lens is raised by holder 2 to contact the holder 1, the element applies a voltage to amplifier 13 so that a proportional voltage U 1  is applied to the modulator 6 to actuate the element 3 which applies vibrations to the holder 1 to set on the lens and centre it with respect to the axis of the holders. As the pressure between the holders increases, so do the vibrations until, at a predetermined pressure, the amplifier 13 switches the discriminator 15 to open switch 14. In another embodiment, two discriminator switches are provided, one actuated in response to the pressure and the other by a time control circuit which controls the rate of increase of the control voltage U 1 . In a further embodiment, each holder 1, 2 has a piezoelectric element, one of which acts as a vibrator and the other as a pressure sensitive pick-up.
Patent GB-1491950-A (GB)
Title: Moulding apparatus
Inventor: SAKA YOSHIMI
IPC: B22C25/00
Filed: 1975-04-18
Abstract: 1491950 Foundry moulding HITACHI METALS Ltd 18 April 1975 [19 April 1974] 42949/76 Divided out of 1491949 Heading B3G A truck 7 on rails 9 carries two machines each producing flaskless moulds which are transferred by pushers 6, 6a, one for each machine, to pouring lines 1, 1a extending at right angles to the rails. The machines alternately make and deliver the moulds to the lines in succession. When a row of moulds have filled the length of the non-power-driven conveyer of a line the addition of a new mould forces a mould off the other end of the line. The truck may move from one pair of pouring lines to an adjacent pair.
Patent GB-1115219-A (GB)
Title: Flexible shield for safety razor
IPC: B26B29/00
Filed: 1966-09-27
Abstract: 1,115,219. Shield for safety razor. B. A. BLOOMFIELD. 27 Sept., 1966, No. 43168/66. Headings A4F and A4V. A deformable cup-shaped shield 18, Fig. 2, for enclosing the head of a safety razor as shown in Fig. 4, shaped like the razor head but larger than it, consists of an upper arcuate wall 22 bounded by end walls 24, and inwardly extending walls 26, having a centrally disposed longitudinal slit 28 and may also have a pair of adjacent complementary notches 30 which describe a hole for holding the handle 14 of the razor. Venting holes 32 and 33 are provided on the walls to facilitate drying of razor blades. The slit is opened by pressing on the end walls and closes on release. The shield is dimensioned to allow partial opening of the razor head while in place thus facilitating drying of the blade. A modification of the shield including a tab projecting from one end wall and a longitudinal rib to confer rigidity on the shield is also described.
Patent GB-1120716-A (GB)
Title: Control of fluid-fuel-fired heaters especially space heaters
Inventor: DAVIES JOHN GARFIELD
IPC: F23N1/08
Filed: 1965-10-12
Abstract: 1,120,716. Space heaters. PARKINSON COWAN Ltd. 12 Oct., 1966 [12 Oct., 1965], No: 43197/65. Heading F4S. In a gas-fired space heater a heat exchanger 9 is enclosed in a casing 12 through which room air to be heated is forced by a fan 13. Air for combustion is provided by an electrically driven blower 11. An external control device (e.g. room thermostat or manual temperature setting control, not shown) acts on a switch 14 which when opened connects resistors 15 and 16 in series with the fan motor 13 and thus reduces the fan speed, conversely when the switch 14 closes, the resistors are out out of the circuit and the fan motor speed is increased. A thermostat phial 17 senses temperature changes in the air emerging from the heater and acts on valve 7 to regulate the gas supply to the main burner 8 accordingly. When, e.g., the fan speeds up, the temperature of the room air emerging from the exchanger 9 falls, the phial 17 acts on the valve 7 to increase the gas supply. When switch 14 is open the resistor 16 acts as an accelerator, current through resistor 16 assisting the room air to heat up the phial 17, thereby speeding up the response of valve 7 in controlling the gas supply to the main burner 8.
Patent GB-1440207-A (GB)
Title: Method of and apparatus for combustible fluid analysis
IPC: G01N31/12
Filed: 1973-09-14
Abstract: 1440207 Method of and apparatus for combustible fluid analysis ITT INDUSTRIES Inc 14 Sept 1973 [10 Oct 1972] 43278/73 Heading G1B The total elemental sulphur and/or the combustible compounds thereof in a fluid e.g. natural gas or liquefied petroleum gas is monitored by supplying oxygen and the fluid to the inlets of a combustion chamber at respective predetermined rates, the chamber having an outlet conduit sealed thereto and being everywhere sealed to prevent any air from entering thereinto, igniting the fluid in the chamber to form products of combustion, and analyzing the combustion products. The analysis is preferably performed by bubbling the combustion products through the electrolyte in the cell of a coulometric titrator, and indicating the amount of SO 2  titrated thereby. Apparatus when used for monitoring the sulphur content of a sample fluid includes a housing having a wall defining a combustion chamber 10 therein, the chamber having inlet means and an outlet 21 and being sealed except for the inlet means and outlet, first means 11, 12, 13 to supply oxygen under pressure at a first predetermined rate to the chamber through the inlet means, second means 14, 15, 16 to supply the sample fluid under pressure at a second predetermined rate to the chamber through the inlet means, third means 17 sealed through the wall to ignite the fluid in the chamber, and fourth means 25 to analyze the products of combustion of the fluid connected from the chamber outlet. The fourth means preferably includes a coulometric titrator 25 having an electrolyte-containing cell 26 connected from the chamber in a manner to cause the combustion products to be bubbled through the electrolyte. A water trap 22 may be connected between the chamber outlet and the cell, the trap including a hollow body 30 having an inlet 31, an outlet 29 and a vent 23 below the body inlet and outlet, the body inlet being connected from the chamber outlet, the body outlet being connected to the cell, and means 32 to pump the combustion products through the body outlet at a rate less than that at which the combustion products enter the body through the body inlet.
Patent GB-884784-A (GB)
Title: Improvements in or relating to a process for the preparation of organometallic compounds
IPC: C07F7/24
Filed: 1959-12-21
Abstract: A polyvalent metal (which term includes arsenic, boron and silicon) is reacted with an organic ester of an inorganic acid and a bimetallic organic compound in which one metal is a Group Ia or IIa metal (Doming) and the other is a Group IIb or IIIa metal (including boron).  The organic ester of an inorganic acid is of formula <FORM:0884784/IV (b)/1> where either R or R1 is an organic radical (preferably alkyl and the other is hydrogen or an organic radical, a is 1 or 2 and Z is an anion, preferably sulphate, phosphate or halide. Specified polyvalent metal include beryllium, magnesium, calcium, mercury, zinc, boron, aluminium, gallium, silicon, lead, tin, arsenic and antimony.  It is preferred to use these metals in a finely divided state.  The bimetallic organic compound is of formula M(M1YaY1b)c where M is a Group Ia or IIa metal, M1 is a Group IIb or IIIa metal, Y is an organic radical preferably a hydrocarbon radical having up to 18 carbon atoms, Y1 is an electron donating ligand such as halogen, an organic radical (especially C1-C18 hydrocarbyl), an alcohol residue or hydrogen.  a is 1 to 4 inclusive, b is 0-3 inclusive and c is the valency of M.  Typical such compounds are sodium tetraethyl aluminium, sodium tetraoctyl aluminium, sodium triethylaluminium hydride, sodium diethyl aluminium dichloride; a list is given.  The reaction is usually carried out at a temperature between -20 DEG C. and 200 DEG C. at a pressure not above 1000 psi. Diluents or solvents are not essential but may be used when the bimetallic organic compound is a solid.  Specified solvents include hydrocarbons, ethers and amines, particularly tertiary amines.  If desired, the process may be modified by using a hydride of a Group Ia or IIa metal and an olefin in the presence of a compound of a metal capable of forming a complex with said metal hydride, thus producing the bimetallic organic compound in situ.
Patent GB-941537-A (GB)
Title: New complex compounds and processes useful in the production of nitrosyl fluoride
IPC: C01B21/084
Filed: 1961-12-04
Abstract: Nitrosyl fluoride complexes NOF.3HF boiling at 95 DEG  C. and NOF.6HF boiling at 68 DEG  C. at atmospheric pressure are prepared by reacting together nitrosyl chloride and hydrogen fluoride under anhydrous conditions.  The reaction may be batchwise or continuous, in the gas or liquid phases, at reduced or superatmospheric pressures between - 25 DEG  C. and 250 DEG  C.  The NOC1 may be replaced by a mixture of chlorine and nitric oxide with an activated carbon catalyst. The mol. ratio of HF : NOC1 is between 3 : 1 and 8 : 1. The complexes may be dehydrofluorinated by alkali metal fluoride, e.g. NaFn HF or KFn HF where the mol. ratio of KF to HF is preferably between 1 : 2 and 1 : 4 with the complex in the liquid phase below 95 DEG  C. or in the gas phase in the range 100-150 DEG  C. in a batchwise or continuous process.
Patent GB-1447971-A (GB)
Title: Builders scaffolding
IPC: E04G7/30
Filed: 1972-09-21
Abstract: 1447971 Scaffolding joints BURTON, DELINGPOLE & CO Ltd 8 Nov 1973 [21 Sept 1972] 43682/72 Heading F2M [Also in Division E2] A clamping assembly for use in scaffolding comprises a one-piece forging 12 of rectangular form having a plain or ribbed surface 13 and a concavely shaped seating 24 for the reception of a ledger tube 10, a clamping jaw 19 being hinged to a lug 17 and for clamping engagement with the tube 10; the upper part 25 of the seating provides a locating surface for the underside of a putlog tube 11 which is located by arcuate ribs 15 and welded to the forging.
Patent GB-916257-A (GB)
Title: A ramp structure for vehicles
IPC: B65G69/00
Filed: 1960-12-20
Abstract: 916,257. Ramps; substructures for oil well derricks. MOORE CORPORATION, LEE C. Dec. 20, 1960 [May 10, 1960], No. 43727/60. Classes 78 (3) and 78 (4). A ramp structure for raising a vehicle 14 adjacent an oil well drilling mast 1 comprises a pair of tracks 15, connected by cross-members 16, 17 and supported by braced links 21, which are pivoted at 25 to the base 4, and rollers 37 running on fixed tracks 36. The inclination of the tracks 36 is such that, on raising the tracks 15 by a cable 28 and winch 34 from the position shown, the tracks 15 are substantially horizontal in their fully raised position, Fig. 2 (not shown). In the raised position, the links 21 are slightly over-centre and lugs 41 on the tracks 15 may be connected to lugs 42 on the mast 1 by pins.
Patent GB-1102702-A (GB)
Title: Improvements in high pressure vessels
Inventor: CAMPBELL WILLIAM HENRY
IPC: B21C27/00
Filed: 1965-10-15
Abstract: 1,102,702. Extruding. VICKERS Ltd. 30 Sept., 1966 [15 Oct., 1965], No. 43880/65. Heading B3P. A high-pressure vessel, particularly for use in hydrostatic extrusion, comprises concentric cylinders 1, 2 defining therebetween an annular stepped gap 3 sealed at its ends and filled with non-gaseous fluid, whereby a build-up in pressure in the bore 8 of the inner cylinder is accompanied by an increase in pressure in the gap. The inner cylinder is slidable within the stepped bore of the outer cylinder and any increase in hydraulic pressure produced by the ram 5 in the bore 8, tends to lower the inner cylinder 1 thus increasing the fluid pressure in the gap 3. The end closure 4 may be an extrusion die. More than two concentric cylinders may be used and their interface gap supplied by one or more external pressure sources. The cylinders 1, 2 may be of compound construction.
Patent GB-919039-A (GB)
Title: Anti-tussive compositions comprising glycyrrhetinic acid and related compounds
Inventor: GOTTFRIED SIEGFRIED
IPC: A61K31/225
Filed: 1959-12-30
Abstract: Antitussive compositions comprise glycyrrhetinic acid and/or a derivative thereof in admixture with one or more compounds selected from expectorants, known antitussives and antihistaminics.  The glycyrrhetinic acid derivatives may be a hemiester, salt of a hemiester, acyl derivative, xanthoglaboral or a derivative containing additional double bonds and/or keto groups as described in Specification 887,011.  Other specified components of the compositions are cocillana and ipecacuanha (expectorants), codeine, pholcodeine and dextromethorphan hydrobromide (antitussives), mepyramine maleate, diphenhydramine hydrochloride, antazoline sulphate and pheninolamine tartrate (antihistaminics) and Friar's balsam (a constituent of an inhalation composition).  The compositions may be in conventional pharmaceutical forms e.g. tablets, lozenges, syrups, suspensions, injections, suppositories, aerosols and inhalations. Specifications 843,132, 843,133 and 843,135 also are referred to.  Reference has been directed by the Comptroller to Specifications 843,133, 843,135, 843,136 and 870,651.