baber/WOPTO huggingface dataset:
Patent GB-1353516-A (GB)
Title: Polymeric impression materials
IPC: A61K6/90
Filed: 1971-05-03
Abstract: 1353516 Making dental moulds JAPAN SYNTHETIC RUBBER CO Ltd 3 May 1971 [1 May 1970 (2)] 12644/71 Heading B5A [Also in Division C3] Impressions of objects are obtained by contacting the object with an impression material comprising a mixture of (1) a natural or synthetic rubber latex, (2) an emulsion of a polycyclopentadiene or a "vinyl polymer" (defined), and (3) an inorganic electrolyte, and keeping said impression material in shape until it has been coagulated by the inorganic electrolyte. The impression material may also contain a mould release agent, e.g. liquid paraffin or undecene. In Examples the latex (1) is of SBR, natural rubber, polyisoprene, nitrile rubber or butyl rubber; the emulsion (2) is of polycyclopentadiene, polyvinyl acetate, polyvinyl chloride, polystyrene, polymethylmethacrylate, high styrene/butadiene copolymer or ABS; and the electrolyte (3) is calcium sulphate hemihydrate. Fillers, pH adjusting agents, tackifiers and colourants are also present in some cases. The main application is for dental impressions.
Patent GB-901292-A (GB)
Title: Protective coating for oxidisable metals
IPC: C25D5/10
Filed: 1960-04-08
Abstract: 901,292. Silver electro-plating. COMPAGNIE FRANCAISE THOMSON-HOUSTON. April 8, 1960 [May 12, 1959], No. 12648/60. Drawings to Specification. Class 41. Metal surfaces to be coated with silver to render the surface resistant to oxidation at high temperatures, are given an undercoat of rhodium into which the silver topcoat will not interdiffuse. For example, ferro/nickel/cobalt alloys is given a coating of rhodium of 1 to 2 Á thick, and then with silver 5 Á thick, both formed by electrodeposition.
Patent GB-900479-A (GB)
Title: Automatic stopper for fastener element stitching machine actuated by lower thread breakage
IPC: D05B51/00
Filed: 1961-04-07
Abstract: 900,479. Sewing machines. YOSHIDA, T. April 7, 1961, No. 12688/61. Class 112. In a machine for sewing together tapes 6, 10 and a spiral sliding clasp fastener element 9 by means of a pair of needles 7, stop motion means comprise a bracket 1 secured to the machine frame, an electrical switch 2 having an actuating tongue 5, and a leaf 4 constrained to slide on an inclined surface on bracket 1 by spaced guides 3, the upper end of leaf 4 being engaged with tongue 5 and its enlarged lower end being disposed adjacent the stitching point, whereby, on failure of one of the lower threads, subsequent feeding of the work by rollers 12 will move the associated upper thread 8 into engagement with the lower end of leaf 4 to slide the latter upwardly and thus actuate switch 2.
Patent GB-1292996-A (GB)
Title: Separation process for a multi-component effluent from a reaction such as olefenic oligomerization or aromatic alkylation
Inventor: BRIGGS TERRENCE MICHAEL
IPC: C07C7/04
Filed: 1970-03-17
Abstract: 1292996 Separating oligomerization or alkylation effluents UNIVERSAL OIL PRODUCTS CO 17 March 1970 [24 March 1969] 12734/70 Heading C5E A process for separating a reaction zone effluent comprising at least 3 components (A, B and C) comprises  (i) separating the effluent in a first separation zone into a first fraction comprising vapour A and a second fraction comprising B and C; (ii) absorbing A in a lean absorbent and passing the rich absorbent from the absorption zone to the reaction zone; (iii) separating the second fraction in a second separation zone into a third fraction comprising B and a fourth fraction comprising C; and (iv) passing at least part of B to (ii) as lean absorbent. The process is particularly applied to an olefin oligomerization process where A is the vaporous diluent (e.g. propane), B is partially oligomerized product and C is olefin oligomer (e.g. propylene trimer or tetramer). The process may also be applied to an olefin-aromatic alkylation where A is the vaporous diluent (e.g. ethane or propane), B is alkylable aromatic (e.g. benzene) and C is the alkylated product (e.g. ethylbenzene or cumene).
Patent GB-1141428-A (GB)
Title: A.c. motor starting arrangement
IPC: H02K17/30
Filed: 1967-03-17
Abstract: 1,141,428. Control of motors; induction motors. BUCYRUS-ERIE CO. 17 March, 1967 [18 March, 1966], No. 12754/67. Headings H2A and H2J. In a starting arrangement for an induction motor of the type having two wound stators which are angularly movable in equal opposite directions to vary the torque of the motor, the stator windings cannot be connected to the supply until the stators are rotated to a " null " position where the currents induced in the single rotor winding cancel. A switch 73 is arranged in the starting circuit and is operated only when the stators are in the " null " position to give the required protection. In operation, with switch 73 closed, start button 104a is pressed to energize coil 91 and close the main supply contacts 87 and hold on contacts 105 so that coil 91 remains energized when button 104a is released and the stators are rotated away from the " null " position allowing switch 73 to open. The motor is stopped in the normal way by de-energizing the circuit with stop button 111. The stators may be rotated manually by means of a crank handle, Figs. 1, 2 (not shown), or by a servo motor which is connected in the simple servo loop 121 and drives the stators through gearing, Fig. 3 (not shown). In this latter case provision is made for the stators to be returned to the " null " position automatically and close switch 73 when the start button is pressed. In normal operation the position of wiper 137 commands the amount of rotation of the stators required and this signal is connected to amplifier 129 through contacts 115 on the start button. When the start button is pressed blade 119 moves to close contacts 117 which connects a " null " position command signal to amplifier 129 and the stators are accordingly moved into the " null " position thus closing switch 73 and allowing the motor to start. The start button may then be released and normal control of stator rotation is regained. In a further modification, Figs. 6-8 (not shown), an hydraulic actuator is used to operate a linkage which rotates the stators, the fluid supply to the actuator being controlled by a solenoid operated valve. Springs in the actuator and valve ensure that when the motor is switched off the stators are returned to the " null " position to close switch 73.
Patent GB-623683-A (GB)
Title: Coal washing apparatus
IPC: B03B5/24
Filed: 1947-05-12
Abstract: 623,683. Coal-washing apparatus. AUTOMATIC COAL CLEANING CO., Ltd., and COLLINS, A. May 12, 1947, No. 12780. [Class 82(ii)] In coal washing apparatus of the kind in which washing is carried out in compartments by the pulsatory action of water operating through a grid that supports a washing bed, the products being classified into different grades according to specific gravities, a non-floating member rests on the surface of the layer of shale and serves, in combination with an upright rod or tube, directly to indicate the thickness of the shale bed. This non-floating member may be formed of a plurality of horizontal rods a, spaced apart to permit the passage of material. The member is attached by straps e to an upright rod or tube c.
Patent GB-568081-A (GB)
Title: Improvements in the manufacture of ears for buckets, cooking vessels and other like articles
IPC: A47J45/06
Filed: 1943-08-07
Abstract: 568,081. Ears for buckets &c. WOOD, T. G. Aug. 7, 1943, No. 12790. [Class 66] [Also in Group XXII] Ears for buckets or cooking vessels &c., to receive the handle &c., are made by forming a back. plate 1 with a countersunk aper. ture 2, and a hook 3 of mild steel bar, one end of the hook being welded to the apertured part of the back-plate and the other end left free as illustrated.
Patent GB-419147-A (GB)
Title: Improvements in or relating to electrical heat-radiating panels
IPC: F24C7/04
Filed: 1933-05-02
Abstract: 419,147. Electric radiators. YOUNG, E. M., 100, Parkway, and UNITY HEATING, Ltd., (formerly YOUNG, OSMOND, & YOUNG, Ltd.), Unity Works, both in Welwyn Garden City, Hertfordshire. May 2, 1933, No. 12796. [Class 39 (iii).] A high-temperature panel radiator, in which the radiating panel 9 is detachable without disturbing the heating element and its connections, is supported in a downwardly inclined position by brackets 12. The panel 9 has a ridge 10 for retarding convection currents and is secured to the radiator by bolts 11 which also secure the radiator to the brackets. The panel 9 may be reversed. The heating element comprises a crimped resistance wire arranged between mica sheets and is backed by asbestos wool or magnesite 8.
Patent GB-494970-A (GB)
Title: Improvements in or relating to electric water heaters
IPC: F24H1/10
Filed: 1937-05-05
Abstract: 494,970. Valve accessories. CHURCH, G. T. May 5, 1937, No. 12814. [Class 135] [Also in Group XI] The spindle 13 of a valve in the inlet pipe 18 of an electric water heater carries a drain plug 15 and a cam 14 for operating a switch. When the inlet valve is closed the drain plug is opened. The valve may be a screw-down valve.
Patent GB-658987-A (GB)
Title: Improvements in or relating to disposable venoclysis equipment
IPC: A61M39/08
Filed: 1948-05-10
Abstract: 658,987. Tube joints. ABBOTT LABORATORIES. May 10, 1948, No. 12839. Convention date, May 24, 1947. [Class 99(i)] A fitting for use in venoclysis equipment and for attaching a hypodermic needle or other device to an elastic tube 1, which may be a synthetic plastic composition comprising a translucent vinyl-chloride and vinyl-acetate copolymer thermoplastic or preferably a copolymer of vinyl-chloride and ethylidene chloride, has stem and skirt portions 7, 8, coaxially disposed relaive to the bore 6 of a body part 5 and forming an annular space receiving the tube end into which a tapered portion of the stem is inserted. A cylindrical portion 11 of the stem provides a backing that cooperates with an inwardly crimped skirt portion 15 securing the tube. The body part may have a grooved tapered portion 9 to fit into a socket of the needle body, Fig. 2. Secured to the other end of the tube may be a fitting 3, Fig. 3, over which fits a rubber tube 4 that is anchored to the fitting by the resilient gripping action of the tube, the interlocking effect between the tube and a groove 15a of the fitting, and the contraction of the tube end 17 over the free end of the skirt 8a. The tube 4 is applied to the outlet of a container. Specification 629,041, [Group XXIX], is referred to. The Specification as open to inspection under Sect. 91 describes a manner in which a venoclysis set may be packaged. This subject-matter does not appear in the Specification as accepted.
Patent GB-394793-A (GB)
Title: Improvements in the treatment of artificial silks
Filed: 1932-05-04
Abstract: To avoid the necessity for sizing and to permit of the employment of the usual twisting-machines, viscose artifical silk, previous to the hard twisting necessary for creping, is subjected to a shrinking by treatment with a swelling agent so that the breaking elongation is increased, or the process of manufacture is conducted so as to produce a thread of similarly high elongation by avoiding tension during the spinning operation, that is, by reducing the speed of winding relatively to the speed of extrusion and by avoiding bending at guides during the travel of the thread. For the shrinking a solution of caustic soda may be employed, and to this may be added sodium sulphide to effect desulphurization at the same time.  The shrinking may be carried out either on the hank, on the cake, or any form not liable to tension when drying. Specification 393,712 is referred to.
Patent GB-430118-A (GB)
Title: Improved apparatus for facilitate the introduction and removal of the cotter pins or rings of spring-controlled valves
IPC: B25B27/26
Filed: 1934-04-28
Abstract: 430,118. Valve-spring compressors. SCOTTISH MOTOR TRACTION CO., Ltd., 29, East Fountainbridge, and BRACKEN, A., 7, Morningside Park, both in Edinburgh. April 28, 1934, No. 12857. [Class 61 (ii)] Work benches; cramps.-Apparatus for removing or replacing engine valve spring cotters comprises a table A on which the cylinder head H is located by pins K, a shaft E rotatable by arms F, links C and foot levers B and pressure arms G adjustably fixed along the shaft and adapted to engage pressure plates L provided with holes M to clear the valve stems when the plates L are pressed down. The pressure arms and plates may be replaced by forked arms N, Fig. 4, one for each valve.
Patent GB-1363234-A (GB)
Title: Receivers for communications systems
IPC: H04W88/02
Filed: 1971-05-04
Abstract: 1363234 Selective signalling D W HANNA 4 May 1971 [4 May 1970] 12880/71 Heading G4H A receiver for a communication system ineludes a premable detector, a pseudo-random generator with an EXCL-OR circuit for determining bit match, and a threshold detector to determine the existence of a complete bit match. The received signal triggers an oscillator to drive a counter and enable parts of the receiver. The preamble (which is a sequence of ones and zeros alternately) is shifted into a shift register where it is recognized by logic to set a flip-flop which is subsequently reset by the counter. While the flip-flop is set, a shift register, preset with a reference pattern, is shifted with EXCL-OR feedback from stages selected by another reference pattern, to produce the address of the receiver. This address is compared in the first-mentioned EXCL-OR circuit with an address received, the EXCL-OR output being integrated and thresholded to set a flip-flop on equality of the two addresses to gate pulses from the oscillator to a loud-speaker. Alternatively, a machine or transmitter may be controlled.
Patent GB-1138512-A (GB)
Title: Improvements in or relating to sterilizing apparatus and method
IPC: A61B17/06
Filed: 1966-03-23
Abstract: 1,138,512. Sterilizing with gases. H. W. ANDERSON PRODUCTS, Inc. 23 March, 1966 [14 April, 1965], No. 12901/66. Heading A5G. Sterilizing apparatus comprises an enclosure for articles to be sterilized which is constructed at least in part of a semi-permeable membrane through which a gaseous sterilant can pass to the surrounding atmosphere at a slow rate and means for releasing a gaseous sterilant into the enclosure. In the embodiment described, the enclosure is a plastic bag which may be contained in a rigid, vented receptacle. The gaseous sterilant (ethylene oxide) is contained as a liquid or as a gel with polystyrene in a glass ampoule which may itself be contained in a semi-permeable envelope from which the gas escapes gradually into the enclosure, the ampoule optionally having a plastic sheath, so that fracture thereof does not endanger the semi-permeable membranes.
Patent GB-684174-A (GB)
Title: Improvements in an apparatus for permanently waving hair
Inventor: CIPOLLA JOSEPH SALVATORE
IPC: A45D2/10
Filed: 1950-05-23
Abstract: 684,174. Hair curling appliances. HALE. F. T. May 23, 1950, No. 12912/50. Class 131 A hair curler comprises an elongated curler rod engageable in an aperture in a thin disc so as to be axially rotatable against the frictional resistance of the walls of the aperture, the disc having a slit to receive a tress of hair wound on the curler rod which, in the region where the hair is wound, is of constant diameter or tapers towards the disc. As shown, the smaller end of a tapered, ribbed curler rod 112 is received in an aperture in a flexible resilient disc 114. In carrying out a method of cold - permanent waving the hair . is moistened with a softening solution and spirally wound on the curler rod as shown in Figs. 4 and 5, the root end of the tress being received in a slot 126 in the disc, an elastic band 130 being stretched on the underside of the disc and held in slots 132, 134, 136, 138 to maintain the coiled tress in position. The hair is then rinsed by spraying with warm water and neutralizing solution applied. The coiled tress is loosened, by rotation of the curler rod, and pushed down the curler rod to rest flat against the disc, the rubber band being stretched on top of the tress, and secured in slots 132 and 134. The coiled tress is allowed to dry in this ringlet form, eliminating a step in the subsequent hair-setting operation.
Patent GB-1149833-A (GB)
Title: Objective changing device
Inventor: SPERLICH HORST
IPC: G02B7/14
Filed: 1967-03-20
Abstract: 1,149,833. Objective mounts. CARL ZEISS JENA VEB. March 20, 1967, No. 12980/67. Heading G2J. An objective changing device, particuarly for a microscope, comprises a rotatable turret 2 carrying a plurality of objectives 1 which are selectively brought into the optical axis of the microscope, and means for accurately aligning the selected objective including a member 6 fixed with respect to the microscope and spring biasing means for urging the objective against the fixed member 6. As shown in Fig.2 the turret 2 rotates about a fixed axis 4 and each objective 1 is urged radially outwards by a spring 3. The fixed member 6 defines a groove 5 so that as the turret is rotated an objective 1 is carried over the member 6 and is urged by the associated spring 3 into the groove 5. In a modification, the objectives 1 are radially fixed in the turret 2, the turret being rotatable on a shaft which is biased towards the member 6. For positioning an objective at precisely the desired height when it is moved into the optical axis of the microscope, the member 6 has an axial stop surface which engages a flange or collar on the outer cylindrical part 1' of the objective.
Patent GB-766677-A (GB)
Title: Production of alcohols
Filed: 1954-05-05
Abstract: Primary or secondary alcohols having at least 4 carbon atoms in the molecule are produced by the Guerbet reaction, in which an alcohol having the group -CH2CH(OH)- is condensed with itself or with another alcohol which may or may not have such a group, and there is used as condensation catalyst an alkali metal or alkaline earth metal phosphate, which in 1 per cent aqueous solution has a pH greater than 9.  The preferred catalysts are the ortho- and pyrophosphates of potassium and sodium.  It is desirable to use also a dehydrogenation catalyst, e.g. copper, nickel, or copper chromite.  It is preferred that water should be removed from the system as it is formed and for this reason a dehydrating agent for alcohols, e.g. calcium oxide or magnesium oxide, should be present in the mixture.  Examples of alcohols, having the -CH2CH(OH)- group, which may be used are ethanol, n-butanol, n-hexanol, n-octanol, propanol, i-propanol, octanol-2, 4-methyl-pentanol - 2, b  - phenyl ethanol and cyclohexanol.  Alcohols, not containing the reactive group -CH2CH(OH)- but which may be condensed with alcohols containing it are, for example, i-butanol, benzyl alcohol, 2-ethylhexanol-1, 2-ethyl butanol-1, cinnamyl alcohol, and p-methoxybenzyl alcohol.  A mixture of n-butanol and ethanol, for example, react according to the process to give 2-ethylhexanol (from 2 molecules of n-butanol), n-butanol (from 2 molecules of ethanol), n-hexanol and 2-ethylbutanol (from 1 molecule of each alcohol).  In the examples: (a) n-hexanol and tripotassium phosphate are condensed to give 2-butyloctanol; (b) n-butanol is condensed with tripotassium phosphate to give 2-ethyl-hexanol; (c) n-butanol is condensed with tetrapotassium pyrophosphate to give 2-ethyl-hexanol; (d) n-butanol is condensed with dipotassium orthophosphate to give 2-ethyl-hexanol; and (e) cyclohexanol is condensed with tripotassium phosphate to give 2-cyclohexyl-1-cyclohexanol and a by-product which is presumed to be dicyclohexyl-1-cyclohexanol.
Patent GB-474788-A (GB)
Title: Improvements in or relating to apparatus for discharging depth charges and the like from ships
IPC: F41F5/04
Filed: 1936-05-08
Abstract: 474,788. Laying depth-charges. DIXON & CO., Ltd., T. H., and COOK, H. T. May 8, 1936, No. 13102. [Class 9 (ii)] [Also in Group XXX] Apparatus for discharging depth-charges from ships comprises cradles carried by an endless conveyer and adapted to support a series of the charges, a framework supporting the conveyer and formed to act as a guide for the charges and means under distant control for progressing the conveyer rearwardly and for releasing the charges one at a time over or through the stern of a ship. As shown, depth charge containers h rest on cradles formed by dogs g attached to parallel endless sprocket chains forming the endless conveyer d. The containers and conveyer are mounted in a framework disposed below the ship's deck a and consisting of upright members b interconnected by transverse members c<2> which carry further members c, c<1> extending fore and aft. Flanges are provided on the members c, c<1> to assist in holding the containers in position whilst the two lower transverse members c<2>, Fig. 2, carry tracks i and supports i<1> for the upper and lower stretches of the conveyer chains respectively. These chains, which pass over pairs of sprocket wheels e, f at the forward and rear ends of the framework, are driven by an electric motor j operating through gears k and l to drive the shaft m of the sprocket wheels f. The motor is actuated by a distant control device, operation of which causes the conveyer d to be moved through a distance corresponding approximately to the diameter of each container h. A watertight door n normally closes the rear of the passage in the framework and, when opened, gives access to a downwardlyinclined shoot o projecting over or through the ship's stern. This door is opened simultaneously with the starting of the motor and closed again as soon as one charge has been released. The door is operated independently but a cut out switch is provided which prevents the conveyer from being operated unless the door is opened. The charges are loaded on to the conveyer through a hatch p.
Patent GB-1034497-A (GB)
Title: Improvements in or relating to trimethylol-phenol reaction products and their application
IPC: C07F11/00
Filed: 1965-03-29
Abstract: The invention comprises reaction products of 2,4,6-trimethylolphenol and water-soluble chromic salts, which are obtainable by mixing aqueous solutions of the two reagents.  The preferred chromic salt is chromic acetate, but reference is made also to the use of chromic bromide, chloride, nitrate, phosphate and sulphate.  An example is given of the use of chromic acetate. The products are useful as waterproofing additives for vinyl resins (see Division C3).ALSO:As waterproofing additives for adhesives based on emulsions of vinyl polymers, use is made of reaction products of 2,4,6-trimethylolphenol with water-soluble chromic salts (see Division C2).  The preferred chromic salt is chromic acetate, but chromic bromide, chloride, nitrate, phosphate or sulphate may also be used.  The reaction product is preferably taken as such but may also be formed in situ by adding aqueous solutions of the two reagents to the adhesive composition.  The invention is particularly applicable to adhesives comprising emulsions of vinyl acetate or of co-polymers of vinyl acetate with other ethylenically unsaturated monomers, a number of which are specified.  A number of substrata to which the adhesives may be applied are also specified.  Comparative experimental results are given.