baber/WOPTO huggingface dataset:
Patent GB-1144338-A (GB)
Title: Process and apparatus for molding cellular plastics articles
Inventor: LEACH IRBY HILLIS
IPC: B29C44/44
Filed: 1966-08-17
Abstract: 1,144,338. Moulding expanded plastics. DOW CHEMICAL CO. 17 Aug., 1966 [18 Aug., 1965], No. 36791/66. Heading B5A. [Also in Division C3] A steam expanded plastics, e.g. polystyrene, moulding produced from polymer granules which may be partially pre-expanded, is rapidly cooled by application of a vacuum to the mould whereby air is also drawn through the moulding to assist in removal of the steam condensate. The moulding is expanded by steam initially admitted to the mould to produce a pressure of the granules against the mould wall greater than twice the pressure to which the article is reduced at the termination of the steam heating process prior to the application of vacuum. The moulding apparatus comprises a mould A of two half-sections 15, 16 defining a rectangular section and pivotally connected at 18 to open, for article release, along diagonally cut side walls; top panel 28 is hinged at 29 to open for loading of granules from a metering apparatus (31) (Fig. 2, not shown). The mould is opened and closed by fluid cylinders. Steam and vacuum are alternately directed to the mould through a valve (V) (Fig. 6, not shown) and pressure of the article against the mould wall is recorded by a meter (80). The mould interior is lined with woven glass fibre (51), Fig. 5, (not shown) adhered to the mould with epoxy resin, whereby steam is admitted to or vacuum is applied to the granules via holes (57) therethrough opposite holes (45) in the mould walls opening from external manifolds 40 connected to headers 44. Air is drawn through holes (55, 56) in the external mould walls and the lining. Examples are given (see Division C3) of plastics materials to which the process may be applied and of suitable foaming agents, of which 3 to 25% by weight are employed.
Patent GB-835567-A (GB)
Title: Improvements in or relating to furnace chamber walls
Inventor: EVANS RICHARD HENRY
IPC: F22B37/10
Filed: 1956-12-04
Abstract: 835,567. Steam heaters. BABCOCK & WILCOX Ltd. Dec. 4, 1957 [Dec. 4, 1956], No. 36989/56. Class 123(3) [Also in Group XII] A steam generating and superheating natural circulation unit comprising a furnace chamber 1 with pulverized fuel burners 3 has a front wall 5 lined with suspended tangent steam generating tubes 11 extending between headers 13, 19, the latter being connected by circulators 21 to a steam and water drum 23 and a rear wall 7 lined with suspended tubes 25 extending between a header 27 and the drum 23. The chamber roof 17 is cooled by generating tubes 35 connecting headers 37 and 39. The floor of a gas pass 31 is lined with superheating tubes 45 connecting headers 47 and 51 whilst the chamber side walls are each - lined with a row of generating and superheating tubes disposed in an alternate arrangement. In a side wall 55 generating tubes extend from a header 65 to a header 67 connected to the drum 23 through circulators 69 whilst the superheating tubes connect headers 75, 77. Thus between adjacent suspended generating tubes 81, Fig. 2, are disposed two suspended superheater tubes 83 held in position by studs 89 welded to the tubes 81 to allow relative longitudinal movement therebetween. In a generator unit having a furnace chamber 301, Fig. 7, the lower zone 301A is lined with generating tubes 321, 325, 331, whilst the upper zone 310B is lined with alternately disposed generating and superheating tubes 341, 343.
Patent GB-794374-A (GB)
Title: Preparation of benzene hexachloride compositions
Inventor: JR CHARLES EVANS
IPC: C07C17/38
Filed: 1955-12-24
Abstract: A benzene hexachloride composition rich in the gamma isomer is obtained by forming an alcoholic solution of a mixture of at least the gamma and alpha isomers, in which the gamma: alpha ratio in the solution is at least 2 : 1 (preferably at least 2.4 : 1), adding water to precipitate part of the solute and separating the resulting gamma-rich precipitate.  Preferably the gamma isomer comprises less than 60 per cent of the total solute.  The solution may be formed by dissolving at least 90 (preferably 95-100) per cent of an isomeric mixture (in which the gamma : alpha ratio may be slightly under 2 : 1 if an alpha-enriched solid residue is left undissolved and removed before the addition of water to the solution).  Drawings showing the efficiency of the precipitation of gamma isomer when varying ratios of the gamma/alpha are present in the solution are provided.  A small dilution with water gives the purest product.  Curves show the variation in purity of the product with the time of precipitation. Any liquid mono- or polyhydric alcohol miscible with water may be employed.  The remaining aqueous - alcoholic solution obtained may be cooled to obtain a further precipitate which may have the advantage of being free from delta isomer.  In examples, the compositions of isomeric mixtures and the precipitates given by precipitation from methanolic solutions with water is given in tables.  In a further step of cooling the solutions, the product also contains an increased proportion of gamma isomer, as shown in a further table, comparing the results with the effect of further dilution.  A further table shows the effect of diluting solutions containing from 2.9 to 2.4 parts of gamma to one part of alpha isomer in various excess quantities of methanol.
Patent GB-1488708-A (GB)
Title: Fluid pressure monitoring device for mechanisms such as hydrostatic fluid bearings
IPC: F15B20/00
Filed: 1974-09-16
Abstract: 1488708 Pressure indicators STANDUN Inc 16 Sept 1974 [17 Sept 1973] 37337/74 Heading G1L [Also in Divisions B3 and F2]  A machine fluid system, e.g. for pressurizing hydrostatic bearings, is provided with a fluidpressure monitoring device comprising a housing 74 having a chamber 76 in which is a plunger 78 normally held in a first position Fig. 3 at least partly by the pressure of fluid admitted at an inlet 84; if the fluid-pressure drops below a critical value, a monitoring pressure (e.g. exerted by a spring 88) pushes the plunger to a second position Fig. 4 where it actuates a proximity sensor 90. The housing and the sensor are mounted one on a moving part of the machine and one on a stationary part such that the sensor detects plunger movement when the sensor and housing are adjacent. The fluid is exhausted through outlet 86. To prevent the plunger hunting, a further outlet 92, normally closed by one end 82 of the plunger is provided.
Patent GB-1494265-A (GB)
Title: Pool tables
IPC: A63D15/00
Filed: 1975-09-12
Abstract: 1494265 Pool table K H ELLIOTT 12 Sept 1975 37574/75 Heading A6H A pool table comprises oppositely-directed delivery and return chutes 2, 3, and simultaneously-moveable retaining means 6, 4 at the ends of the return chute so that all playballs roll down the chute 2 into the chute 3 whereas the smaller cue ball falls down onto a retaining means, rolls partly down it and then drops out through a hole 8, except that, when all play-balls have been pocketed, the presence of the last play-ball causes it to be retained. Insertion of a coin in the mechanism causes the barriers 6 and 4 to lower and rise thus releasing the play-balls. A second operation of the coin mechanism causes the barriers to be returned, allowing the cue-ball to drop free.
Patent GB-846557-A (GB)
Title: Improvements in or relating to the moulding of phenolic and epoxy resins
Inventor: PHILLIPS LESLIE NATHAN
IPC: B29C33/66
Filed: 1956-12-10
Abstract: A parting agent solution for use in moulding phenol-aldehyde and epoxy resins comprises 5-20% by weight of cellulose acetate butyrate, having a butyryl content of 15-30% by weight, and a solvent for the cellulose acetate butyrate.  The solvent may comprise a major proportion by weight of a low-boiling solvent, e.g. acetone, a minor proportion of a high-boiling solvent, e.g. diacetone alcohol, and an intermediate proportion of a medium-boiling solvent, e.g. ethyl acetate.  The solution may also contain one or more solvents selected from industrial methylated spirits, butyl alcohol, ethyl lactate, and toluene, and may also comprise up to 20% by weight of a metallic stearate, e.g. aluminium stearate.  Specification 762,462 is referred to.ALSO:A parting agent solution for use in moulding phenol-aldehyde and epoxy resins comprises 5 to 20% by weight of cellulose acetate butyrate, having a butyryl content of 15 to 30% by weight and a solvent for the cellulose acetate butyrate.  The solvent may comprise a major proportion by weight of a low boiling temperature solvent, e.g. acetone, a minor proportion of a high boiling temperature solvent, e.g. diacetone alcohol, and an intermediate proportion of a medium boiling temperature solvent, e.g. ethyl acetate.  The solution may also contain one or more solvents selected from industrial methylated spirits, butyl alcohol, ethyl lactate, and toluene, and may also comprise up to 20% by weight of a metallic staerate such as aluminium stearate.  The solution may be applied to a mould wall or lining and the solvent allowed to evaporate.  Specification 762,462 is referred to.
Patent GB-1403776-A (GB)
Title: Method of making miniature layer resistors and other components  on insulating chips
IPC: H01C17/065
Filed: 1972-08-14
Abstract: 1403776 Resistors COMPULINE CORP 14 Aug 1972 [12 Aug 1971] 37764/72 Heading H1S A system for producing miniaturized components on a chip 10 comprises a plunger-type dispenser 14 holding a supply of e.g. resistor ink, 15, having a spout 13, and means for dispensing a predetermined amount of this ink onto the chip. As shown, a ceramic substrate 10 is mounted on a movable table 11. The ink is dispersed through the spout by means of a piston 16 driven by a thread 19 turned by stepping motor 17. The table is moved by a stepping motor 22. The value of the resistor is determined by its cross-sectional area and length, and the type of ink used which can be changed by using different dispensers. The length of resistor is determined by the presettable counter 28 which controls the number of pulses fed to the motor 22. The counter 26 controls the number of movements of the piston 16 (which is typically moved in ten micron steps). The film thickness is accurately determined by counter 27 which adjusts the ratio of number of table movements to number of piston movements. Control system.-An electronic control system (Fig. 7, not shown) carries out a sequence of operations upon pressing a "start" button. The dispenser and spout are lowered on to the substrate; the table moves and the ink is discharged; at the end of a present length the carriage stops; the capsule lifts; the table returns; and the caspule stops rising. The on/off and forward/reverse or up/down commands are controlled by bi-stable circuits, and the motor controlled by bi-stable circuits, and the motors are set in operation by clock pulses passing through AND gates whose other inputs are from the bistable circuits.
Patent GB-1147937-A (GB)
Title: Production of high molecular weight polymers of vicinal episulfides
IPC: C08G75/08
Filed: 1966-08-23
Abstract: 1,147,937. Polymers of vicinal episulphides. THIOKOL CHEMICAL CORP. 23 Aug., 1966 [2 Sept., 1965], No. 37820/66. Addition to 1,068,952. Heading C3R. Normally solid, granular, high molecular weight polymers of vicinal episulphides having a high bulk density are prepared by compacting a polymer-free episulphide polymerization catalyst to a bulk density of at least 300 grams per litre and polymerizing a monomer charge containing a major amount of a vicinal episulphide in the presence of said compacted catalyst. The resulting polymer has a bulk density approximately equal to that of the compacted catalyst. Ethylene sulphide is particularly suitable as the vicinal episulphide monomer. Preferred catalysts are the reaction products of zinc, cadmium and mercury alkyls and aryls with electron donor compounds, e.g. the reaction product of diethyl zinc and water. The resulting polymers may be mixed with fillers, colouring pigments, antioxidants, thermal and ultraviolet stabilizers, flame retardants or nucleating agents before being used as thermoplastic moulding materials. Reference has been directed by the Comptroller to Specification 1,034,346.
Patent GB-1404196-A (GB)
Title: Object recognition systems
IPC: G06K9/74
Filed: 1972-08-14
Abstract: 1404196 Pattern recognition systems KOMBINAT ROBOTRON VEB 14 Aug 1972 37889/72 Heading G4R The system employs a binary filter mask in the Fourier plane of an optical processing path. The filter has light-transmissive and lightopaque regions. The intensity of the Fourier spectrum integrated over the light-transmissive regions is compared with a given value to determine whether a pattern in the path belongs to one or another of two sets of patterns, each set consisting of at least two distinct classes of patterns. The given value may be the integral of the intensity from a second filter mask. By the use of n masks 2<SP>n</SP> patterns may be distinguished. For example, to distinguish between patterns, A, B, C, D two masks are required, one mask indicating whether or not the unknown pattern lies in a set A, B and the other whether or not it lies in a set B, C. These masks may be paired with other masks. For example the mask for set A, B may be paired with a mask for set C, D, and the mask B, C, with a mask A, D. In this case the intensity integral of one mask of a pair is compared with the intensity integral of the other mask, the latter integral representing the given value referred to above. The unknown pattern is then identified as being that pattern which is present in both of the sets in the masks which provided the greater (or alternatively the lesser) value of the integral. The light transmissive regions belonging to different masks may be provided with diffracting, refracting, or reflecting members to deflect the light to the appropriate photodetectors.
Patent GB-1347409-A (GB)
Title: Semiconductor device junction temperature monitor
IPC: G05D23/24
Filed: 1971-06-15
Abstract: 1347409 Protective arrangements GENERAL ELECTRIC CO 15 June 1971 [23 June 1970] 27952/71 Heading H2K [Also in Divisions G1 and H1] Apparatus for measuring the temperature of a P-N junction 19 of a thyristor assembly 7, 8 (see Division H1) comprises a temperature sensor 27 mounted on a fin 21 of a heat sink and providing a first signal to an adder 41, a second signal representing current flow through the junction being supplied, from a current transformer in a sensor 22, to a function generator 39 which produces a third signal representing the power dissipated in the junction due to current flow which third signal is fed to a simulator 37 including an RC network representing the transient thermal impedance of the thyristor assembly between the junction and the mounting point of the temperature sensor, the resultant signal V 1  representing the temperature difference between the junction and the mounting point, which signal V 1  is combined with the first signal to provide a signal V 4  representing junction temperature. The signal V 4  is fed to a level detector, which for temperatures above a predetermined level actuates a gate control circuit for the thyristors of a three phase A.C. circuit breaker, or to an alarm. The temperature sensor is a P.T.C. thermistor 32 in an aperture 33 in a copper block 34 encapsulated in a mass 36 of potting material, the thermistor wires connecting to a coaxial cable 35.
Patent GB-1043928-A (GB)
Title: Improvements in or relating to filters
IPC: B01D35/16
Filed: 1964-09-17
Abstract: 1, 043, 928. Cleaning filters. HOLSTEIN & KAPPERT MASCHINENFABRIK PHOENIX G.m.b.H. Sept. 17, 1964 [Sept. 20, 1963], No. 37962/64. Heading B1D. Sludge cake which has formed on the rectangular filter elements 3 which are disposed vertically and parallel to one another within a closed casing 1, 2 is removed by means of jets of fluid under pressure issuing forth from apertured pipes 9, the pipes being movable between the elements 3 to allow the jets to play on all of each filter. A hydraulic piston 14 joined by a hollow, connecting, fluid carrying rod 12 and by a cross pipe 8 to the pipes 9 causes the pipe system to be vertically reciprocable. During normal filtering the pipes are held by means of a holder 18-20 above the level C-D of the unfiltered liquid which has entered through 6. On clogging the holding device is disengaged and fluid is introduced through a valve 22 to the space above the piston, the fluid passing through the pipes at the upper region of the elements. By opening valve 25 fluid is let out of the space below the piston allowing the pipe system to be lowered, so cleaning all of each filter. To raise the piston, valve 22 is closed, valve 23 opened, valve 25 closed and valve 24 opened. An observation socket 27 and an internal light 30 are provided. Fluid within the casing is released through valve 32 . Sludge is removed through socket 7, or if in dry form through a discharge screw, and filtrate through outlet 5.
Patent GB-380072-A (GB)
Abstract: 380,072. Interrupters. ELECTRIC AUTO-LITE CO., Champlain Street, Toledo, Ohio, U.S.A. March 5, 1931, No. 18564/32. Convention date, March 20, 1930. Divided on 380,040. [Class 38 (v).] The relatively fixed interrupter contact 76 is mounted on an upstanding arm 77 of a bracket 78 which is adjustable about a pivot screw 80 to vary the distance of separation of the contacts 75, 76 when the pivoted contact arm 70 is operated by the rotating cam (not shown). The adjustment of the bracket 78 is effected, as shown in Figs. 2 and 3, by rotation of a screw 82 fitted with an eccentric shank 83 which engages a slot in the bracket, the bracket being locked in its adjusted position by a further screw 86 passing through a curved slot 85 concentric with the pivot 80. In cases where, as shown in Fig. 1, two interrupters are mounted on the same base the second interrupter may be adjustable as a whole about the cam axis by being mounted on a plate 91 having downturned projections 92 engaging the central bore of the interrupter plate. On loosening the securing screws a screwdriver may be inserted in and pivoted within a slot 96 formed in the baseplate so as to engage the sides of a slot 94 in the plate 91 and move it, together with the interrupter, around the cam.
Patent GB-902636-A (GB)
Title: Method for accelerating the bleaching of fibrous materials
IPC: D06L4/18
Filed: 1959-11-10
Abstract: Fibrous materials, e.g. cotton and paper, are bleached by treating them with an acidic mixture containing an alkali metal chlorite and an organic salt of phosphoric acid obtained by the reaction of orthophosphoric acid with a nitrogen containing organic base, e.g. triethylamine, xylidine, pyridine and isopropylamine phosphates. Compositions for use in the preparation of the bleaching bath comprise the organic phosphate and alkali metal chlorite in a crystalline condition.  The pH of the bath which may also contain orthophosphoric acid or an inorganic phosphate may be adjusted by the addition of formic acid.  Instead of using the organic salt of orthophosphoric acid a similar reaction product of, for example, phosphorus acid or in the presence of water pyrophosphoric acid which is converted into the orthophosphate in situ may be used.  Bleaching may be carried out in the vapour phase.
Patent GB-364318-A (GB)
Title: Improvements relating to electron discharge tubes and similar vacuum devices
IPC: H01J5/32
Filed: 1930-12-19
Abstract: 364,318. Thermionic valves ; electric incandescent lamps &c. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Dec. 19, 1930, No. 38339. Convention date, July 19. [Class 39 (i).] The supporting wires for the electrodes of electron discharge tubes, thermionic valves and incandescent lamps are arranged in the pinch in two or more rows, glass members being inserted between adjacent rows and the pinch being of the usual approximately rectangular shape. Fig. 4 shows in plan the pinch of a thermionic valve in which the supporting wires 8, 14 are arranged in two rows, with an intervening glass member 15. The pinch may be made by mounting the wires in a stem and inserting a glass rod 15 between the two rows. The end of the stem is then pinched, the rod 15 becoming incorporated therewith. Another method consists in surrounding the wires with glass tubes 13, as shown in Fig. 6, which become incorporated with the stem during the pinching operation.
Patent GB-303366-A (GB)
IPC: C01D1/20
Filed: 1928-12-29
Abstract: 303,366. I. G. Farbenindustrie Akt.- Ges. Dec. 31, 1927, [Convention date]. Alkali hydroxides; ammonium nitrate; ammonium compounds containing metals. - Alkali hydroxides are produced by treating under superatmospheric pressure an alkali salt which is soluble in water and also in liquid ammonia with a mixture of water and liquid ammonia containing at least 50 per cent of the latter. In examples (1) saturated aqueous sodiuam chloride is added at room temperature to liquid ammonia under a pressure of 7-8 atmospheres, sodium hydroxide being precipitated; (2) water is added at room temperature and a pressure of 8 atmospheres to a solution of sodium chloride in liquid ammonia, sodium hydroxide being precipitated. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the production of metal compounds in general by treating a solution of a metal compound with liquid or gaseous ammonia, additional examples being, the precipitation of sodium hydroxide from a mixed aqueous solution of sodium hydroxide and sodium nitrate by treatment with gaseous ammonia; the precipitation of an ammonium compound of calcium chloride by the action of liquid ammonia on an aqueous solution of this salt, or by the action of liquid ammonia on a mixed aqueous solution of calcium nitrate and ammonium chloride, calcium chloride being obtained by heating the precipitate. This subject-matter does not appear in the Specification as accepted.
Patent GB-1035258-A (GB)
Title: Spark erosion machines
Inventor: LYAS CECIL ALBERT
IPC: B23H1/00
Filed: 1963-10-01
Abstract: 1,035,258. Spark erosion. AGEMA S.A. Jan. 1, 1965 [Oct. 1, 1963], No. 38660/63. Heading B3V. A spark erosion machine comprises a worktable 1 mounted on a central pillar 2, and a tank 4 for working liquid mounted on a sleeve 7 which is slidable on the lower portion 2b of the pillar. The working liquid may be paraffin. A key 11 prevents rotation of the tank whilst it is moved vertically by an electric motor 15 through a worm 13 and rack 12.
Patent GB-1314292-A (GB)
Title: Prostaglandins and the preparation thereof
IPC: C07C405/00
Filed: 1971-08-18
Abstract: 1314292 Prostaglandins UPJOHN CO 18 Aug 1971 [14 Sept 1970] 38782/71 Heading C2C Novel optically active prostaglandins of the formulµ or racemic compounds of those formulµ and the mirror images thereof, wherein R 1  is H, C 1-8  alkyl, or a pharmacologically acceptable cation, R 2  is CH 3  or CH 3 CH 2 , and X is -CH 2 CH 2 - or trans-CH=CH-, and both Y and Z are -CH 2 -CH 2 -, or X is trans-CH=CH-, Y is cis-CH=CH- and Z is -CH 2 -CH 2 - or cis-CH=CH- are prepared by the neutral dehydration of 15 - methyl - (or 15 - ethyl)- PGE 1 , -PEG 2 , -PGE 3  or -dihydro-PGE 1  or the C 1-8  alkyl esters thereof. Pharmaceutical compositions, suitable for parenteral administration, contain the above novel compounds together with pharmaceutically acceptable carriers. The novel compounds possess hypotensive activity and the ability to reduce and control gastric secretion and increase the flow of blood to mammalian kidney.