baber/WOPTO huggingface dataset:
Patent GB-851517-A (GB)
Title: Process for the manufacture of plaster objects of high mechanical strength, and objects obtained by said process
IPC: C04B28/14
Filed: 1958-10-30
Abstract: Plaster objects, e.g. partition walls, of high mechanical strength, density, and impermeability and of homogenous crystalline texture, are made by mixing dry plaster powder containing up to half a molecule of water of crystallisation for every molecule of calcium sulphate with between 20 and 40% of water by weight of the dry plaster to form a thick paste, subjecting the paste to mechanical vibrations until it becomes fluid, and moulding said fluid. Alternatively the dry plaster may be mixed with 40-100% by weight of water and the water content subsequently reduced to 20-40% by filtration or centrifuging.  The paste may be subjected to kneading and/or pressure to facilitate the moulding operation.  In one example 15 kilograms of powdered CaSO4 1/2 H2O and 4,5 litres of water are mixed in a vat until the mass is homogenous, and the vat is then vibrated at 12000 cycles/min. by a vibrator.  The paste flows into a mould for 60 X 60 X 3cm. boards and said mould is placed on a table also vibrating at 1200 cycles/min., so that the material fills all the mould contours.  The mould is then removed from the table and the material allowed to set.
Patent GB-930609-A (GB)
Title: Improvements in or relating to devices for indicating the level and condition of oilin internal combustion engines
IPC: F01M11/12
Filed: 1961-09-29
Abstract: 930,609. Indicating liquid levels. STURDEVANT MANUFACTURING CORPORATION. Sept. 29, 1961 [Nov. 25, 1960], No. 35020/61. Class 123 (1). [Also in Group XXVII] An oil indicator for an I.C. engine which provides visual indication of the presence of oil in the crankcase above a certain minimum level and of its condition, comprises a transparent tubular member 38 which is screwed into the oil filler opening 30 and has vacuum producing means in the form of a resilient bellows 60 attached to the upper end, the lower end 44 being open and terminating at the minimum oil level. The bore 52 of the tube 38 communicates with the bellows 60 by means of a small orifice 56 in the upper end of the tube. When fitted to a crankcase which operates under slight vacuum the bellows 60 is collapsed automatically during operation of the engine but regains its normal form when the engine is stopped and in so doing draws up oil into the transparent portion of the tube unless the oil is below the minimum level. The orifice 56 serves to damp out the pressure fluctuations to which the bellows would otherwise be subject. Alternatively, when fitted to a crankcase which does not operate under vacuum the bellows may be depressed manually and then released to draw up oil into the tube and thus to provide the indication of the presence and condition of the oil.
Patent GB-909782-A (GB)
Title: Magnetic core memory systems
IPC: G06F12/02
Filed: 1960-12-13
Abstract: 909,782. High-speed data store. NATIONAL CASH REGISTER CO. Dec.13, 1960 [Dec. 15, 1959], No. 35052/61. Divided out of 909,781. Class 106 (1). [Also in Group XL (c)] A constant current source 19 connectible to any selected drive line of a matrix 43 of bistable magnetic elements is connected also to a biased diode 26, 27 in such a manner that the diode is conductive when and only when no drive line of the matrix is selected. When the memory co-ordinate select circuits 44 are non- conductive the diodes 26, 27 are biased by -ve potential at terminal 28 and all the current from transistor 19 is absorbed by a dummy load 3. However, when any one of the co-ordinate select current is energized the collector bias voltage on 19 falls due to -ve marking on the remote end of the selected drive line so that diodes 26, 27 become non-conductive and all the current from 19 flows through the selected core drive line. A pair of thermistors 11, 12 adjacent the matrix vary the base potential of transistor 19 and therefore the current inversely with the temperature of the matrix.
Patent GB-761743-A (GB)
Title: Cyclized rubber
IPC: C08C19/10
Filed: 1954-12-03
Abstract: Cyclized rubber is prepared by rapidly heating undissolved rubber in the absence of oxygen to a temperature of 70 DEG  to 150 DEG C. with a quantity of a rubber solvent containing a cyclizing agent sufficient to produce a solution of cyclized rubber containing more than 10 per cent of cyclized rubber, maintaining the temperature until substantially all the rubber has been cyclized and recovering the cyclized rubber from the solution.  The rubber solvent may be of any known kind, e.g. toluene.  The cyclizing agent may comprise sulphuric or hydrochloric acid, organic sulphonic acids, e.g. p-toluene sulphuric acid, or sulpho-halogenides such as p-toluene sulpho-chloride, or Friedel-Crafts catalysts, e.g. titanium tetrafluoride, aluminium chloride, tin tetrachloride, boron trifluoride, and addition compounds thereof with acetic acid or phenols.  Generally quantities of cyclizing agents of 3 to 25 per cent of the weight of the rubber produce the desired results.  Carbon dioxide, nitrogen, hydrogen, or sulphur dioxide may be used for excluding oxygen from the reaction mixture.  Solid cyclized rubber may be obtained from the solution by precipitation with methanol, acetone, or water, or by steam distillation of the solvent.  The cyclized product obtained has a light brown stain which may be removed by treatment with an inorganic or organic base, e.g. ammonia or pyridine.  In order to obtain a cyclized rubber product which is compatible with linseed oil, stand oils, and alkyd resins, a phenol may be included in the cyclizing reaction mixture, and may be added to the solution of the cyclizing agent in the rubber solvent.  In one of the described examples 300 parts by volume tetrachloroethane, 10 parts by weight concentrated sulphuric acid, and 50 parts by weight phenol are heated to 100 DEG C. and added to 100 parts crepe rubber in a reaction vessel from which the air has been removed and replaced by nitrogen.  When the reaction has been completed the solution obtained is diluted with 100 parts by volume tetrachloroethane, and the isomerized product precipitated with methanol.  Specification 754,350 is referred to.
Patent GB-1354174-A (GB)
Title: Thermostable polyamides
Inventor: RUSSO M
IPC: C08G69/42
Filed: 1971-07-27
Abstract: 1354174 Heterocyclic polyamides MONTECATINI EDISON SpA 27 July 1971 [29 Oct 1970] 35072/71 Heading C3R A polyamide (I) has structure where X is S or O and Y is a radical of a primary aliphatic or secondary cyclic diamine or of a diamine containing a cycloaliphatic, aromatic, or heterocyclic ring. (I) may be formed by polycondensing the acid halide of 1,2,5-thiadiazole-3,4-dicarboxylic acid (Ia) or 1,2,5-oxadiazole-3,4-dicarboxylic acid (Ib), with the appropriate diamine. Diamines specified have the general structures (1V) where Z is -CH 2 -, -(CH 2 ) 2 , -C(CH 3 ) 2 -, -O-, -SO 2 -, or -Si(CH 3 ) 2 -, and E is one or more aromatic 5 or 6 membered heterocyclic ring(s) containing O, S, N, or Se as heteroatom(s) Examples of (E) are optionally substituted thia- and oxadiazole, triazole, triazine and pyrimidine rings. Many diamines of each type are specified. The reaction may be performed interfacially, the diamine being dissolved or dispersed in an aq. phase, and the acid halide dissolved in a water-immiscible organic solvent. The solvent may be benzene, chlorobenzene, CH 2 Cl 2 , CHCl 3 , toluene, xylene, CCl 4 , cyclohexanone, tetramethylenesulphone, 2,4 - dimethyltetramethylenesulphone, tetrahydrofuran, or propylene oxide. The reaction may be performed with or without stirring. There may be excess of one reactant, e.g. the diamine. Preferably in the diamine phase there is an acceptor for the hydrohalic acid formed. This may be the diamine itself, or NaOH, KOH, Na 2 CO 3 , MgO, or (C 2 H 5 ) 3 N. An emulsifier may be added to the aqueous phase, or polycondensation may be performed in solution. The polyamides may have thermal decomposition peaks at >330‹ C. under dynamic vacuum, or >250‹ C. in air. The glass transition temperatures are usually below the degradation limit, and so moulding can be carried out at a temperature at which viscoelasticity is suitable. Inherent viscosity may be, e.g. 0À31-3.11, and M.W. (Mn) may be 30,000. The polymer is soluble in various solvents, and solutions may be cast into films or used to form fibres.
Patent GB-1516856-A (GB)
Title: Shutter-diaphragm for a camera
IPC: G03B9/62
Filed: 1975-08-26
Abstract: 1516856 Shutter-diaphragm PRONTORWERK ALFRED GAUTHIER GmbH 26 Aug 1975 [7 Sept 1974] 35141/75 Heading G2A A shutter-diaphragm has opening blades 5, 6 which are opened by a spring device comprising a strong spring 11 which acts only during the initial movement phase to overcome the inertia of the system and a weak spring 12 which acts uniformly throughout the opening movement to provide a smooth opening characteristic. As shown, on depressing a release 25, a catch 24 frees a slider 20 which is moved to the right by a strong flat spring 11. The slider 20 rotates a pinion 15 which via a disc (17), Fig. 2 (not shown) rotates a cylinder (10) on which the opening blades 5 and 6 are pivoted. The slider 20 soon moves out of the operating range of the strong spring 11, but the pinion 15 is still rotated by means of the weak spring 12. After a photo-electrically timed period an electromagnet 32 operates closing blades 7, 8. By moving slider 20 to the left the blades 5, 6, 7, 8 are cocked. Preferably the exposure is timed by a photodiode (34, Fig. 2) located behind an aperture defined by further blades (35, 36) pivoted to the cylinder (10).
Patent GB-1301943-A (GB)
IPC: B23K9/10
Filed: 1970-07-21
Abstract: 1301943 Electric transformers INDUSTRIAS SIGMA S A DE C V 21 July 1970 [21 Nov 1969] 35381/70 Heading HIT [Also in Division H2] Arc welding apparatus includes a transformer having a magnetic core with three legs P1, P2, P3, the primary winding 3 being wound on leg P1, a secondary winding 4 being wound partly on leg P1 and partly on leg P2 and a further secondary or auxiliary winding 8 on leg P3, the winding P3 being controlled by an electronic device 11 so as to cause variable saturation of the leg P3 thus to control the magnetic linkage between the windings 3, 4 and hence the welding current. The current flowing in the winding 8 is controlled by a thyristor 14 which is gated by means of a unijunction transistor 23, the operating signal for which transistor is developed by a circuit including a capacitor 22 and a variable potentiometer P connected across terminals 17, 18. The thyristor may be replaced by a triac, and, if desired, two transformers may be used in parallel. Three-phase embodiments are also shown with the windings Scott connected or double three-phase with interphase transformers.
Patent GB-1426708-A (GB)
Title: Positive electrode for an alkaline accumulator
IPC: H01M4/32
Filed: 1974-08-12
Abstract: 1426708 Alkaline accumulator electrodes VARTA BATTERIE AG 12 Aug 1974 [13 Aug 1973] 35443/74 Heading H1B An electrode for an alkaline accumulator comprises an active mass which is a ternary mixture of Ni(OH) 2 , CO(OH) 2  and Cd(OH) 2 , the content of each of the CO(OH) 2  and Cd(OH) 2  being from 2-8 mol per cent. Various preferred mixture compositions are disclosed and indude from 88-92 mol per cent of Ni(OH) 2 , 4-8 mol per cent'of Cd(OH) 2  and 8-4 mol per cent of CO(OH) 2  and a particularly suitable mixture is 90 mol per cent of Ni(OH) 2 , 7 mol per cent CO(OH) 2  and 3 mol per cent Cd(OH) 2 . The addition of cobalt hydroxide is to improve the utilization of the active mass of nickel hydroxide and the addition of the cadmium hydroxide is to counteract a tendancy for swelling of the electrode material. These effects are stated to be produced only when CO(OH) 2  and Cd(OH) 2  are incorporated homogenously in the Ni(OH) 2  lattice and this is achieved by simultaneous precipitation of all three hydroxides by means of KOH solution from their nitrates or sulphates. The resulting precipitate may be compressed to tablet form, or the precipitation may take place on to a porous carrier.
Patent GB-1279007-A (GB)
Title: Apparatus for coating or impregnating webs of sheet material
IPC: D04H1/64
Filed: 1969-07-15
Abstract: 1279007 Coating apparatus FELDMUHLE ANLAGEN-UND PRODUKTIONS GmbH 15 July 1969 [15 July 1968] 35572/69 Heading B2L [Also in Division D1] In apparatus for applying a coating or impregnating material from a plurality of outlets spaced across the width of a travelling web, the distributor for the material is constructed so that the path length to each outlet from a common supply point is substantially the same. As disclosed the distributor 3 comprises a branched symmetrical pipe which depends on halving, the total cross section of all the outlets equalling the cross section of the supply pipe. The outlets may be of widening flattened construction with their ends in abutment. Two rows of such outlets may be placed in parallel with their abutment points staggered. The distributor may be oscillated transversely. The bonding of fibrous fleeces by applying a synthetic plastics foam is specified.
Patent GB-894059-A (GB)
Title: An improved apparatus for deriving electrical signals representative of physical pressure
Inventor: STONOR CHARLES RICHARD PAUL
IPC: H04M11/00
Filed: 1959-10-21
Abstract: 894,059. Electric selective signalling systems. SOUND DIFFUSION (SALES) Ltd. Jan. 23, 1961 [Oct. 21, 1959], No. 35703/59. Class 40 (1). A system for transmitting the value of a pressure to a remote station includes a mercury manometer B and spaced contacts E1-E6 corresponding respectively to pressures of 6-1 p.s.i., contacts E2, E4, E6 being connected through a resistor RX, RY, RZ to the same terminals of a uniselector CS1 as contacts E1, E3, E5. The wiper of CS1 scans the contacts in the direction shown by the arrow and relay M operates when the first terminal which is marked with a positive potential is reached. If this terminal carries the full positive potential relay SA operates when contact P1 is subsequently closed and contacts SA1 open to prevent relay M from operating again. If the first marked terminal carries a low positive potentialdenoting that the highest immersed contact is E2, E4 or E6-relay SA does not operate when contacts P1 close, so that relay M is again operated when CS1 steps to the next terminal, this being at the full positive potential so that further operation of M is then prevented. Contact M1 controls a verbal announcement unit which is arranged to transmit a verbal message over lines PL to indicate the pressure. When M1 is operated twice, two successive messages are transmitted, e.g. " 6 p.s.i." followed by " 4 p.s.i.", this being interpreted as " 5 p.s.i." Specification 868,768 is referred to.
Patent GB-1277762-A (GB)
Title: Apparatus for obtaining a percutaneous and digital blood sample
IPC: A61B5/151
Filed: 1969-07-16
Abstract: 1277762 Blood sampling apparatus MICROMEDIC SYSTEMS Inc 16 July 1969 [26 July 1968] 35716/69 Heading A5R Apparatus is provided for obtaining a blood sample from a patient's finger using a collector device 15, Fig. 11, of the type disclosed in Specification 1277761 having a tube 32 and a resilient funnel member 35 with incisor lancets 38a, 38b, the apparatus having a mounting 12, Fig. 2, having a through passage 12c in which the collector 15 is supported, a striker mechanism having a releasable member 17 adapted to strike a lower end of tube 32 to force lancets 38a, b into a patients' finger placed over funnel 35, a finger holder 8, and means for periodically varying the intensity of clamping of said holder. Holder 8 is pivoted at 7 and has a pin 8c which during pivoting of the holder engages member 17, to pivot the latter against springs 14, and then releases member 17 which consequently strikes tube 32. Holder 8 is retained in its clamping position by engagement of teeth 8f with a grooved rod 29 on a lever 25, the degree of clamping being varied by a massaging-type movement of a finger support 6 on a lever 19 driven through an eccentric by a motor. The first drops of impure blood are absorbed by a pad 40 in funnel 35, the remaining sample passing into tube 32 until a light beam, passing through tube 32 from a source to a photo cell in mounting 12, is interrupted, whereupon a solenoid coil 23 is energised and attracts an armature 22 on a lever 21, the end of which lever thus becomes engageable with a projection 19a on lever 19 to move levers 21 and 25 thus releasing holder 8 which is acted on by a return spring 11, the actuation of the solenoid also stopping the motor. Holder 8 may alternatively be released and the motor stopped via a push button 4. In an alternative embodiment, Figs. 13-16 (not shown) the finger is clamped and massaged between a fixed swell (45) on a casing (42) and a sponge pad (46) secured to a stirrup (41) pivoted on an eccentrically driven pin (43).
Patent GB-745506-A (GB)
Title: Improvements in or relating to cupboards, cabinets and similar devices
Inventor: MACLEOD PETER JOHN
IPC: E06B5/00
Filed: 1953-12-24
Abstract: 745,506. Cabinets. BRITISH TABULATING MACHINE CO., Ltd. Oct. 29, 1954 [Dec. 24, 1953], No. 35894/53. Class 52(1). [Also in Group XXV] The front face of a cabinet has a frame member 16 to which is hinged a minor door 12 overlying the edge of a major door 3 to hold it closed. The minor door is maintained closed by the cross piece 25 of a handle 17 slidable in the member 16 and in a guide 22 secured to a shelf 27, the handle being retained in the inner position by a lockable detent 21 engaging a notch 20 and being slidable outwards a greater distance than the breadth of door 12. As shown, the member 16 is central and two sets of doors are provided. The major doors may be omitted, the minor doors then serving as retaining means only for broad articles placed on the shelves 27.
Patent GB-181754-A (GB)
Title: Improvements in or relating to machines for moulding and pressing concrete and similar material into block form
IPC: B28B7/00
Filed: 1920-12-23
Abstract: 181,754. Sabulite (Great Britain), Ltd., Bellingham, J., and McCandlish, W. H. Dec. 23, 1920. Moulds.-In downwardly-discharging moulds of the type comprising movable side walls pivotally supported within a casing, a shaft extending through the mould is adapted to operate the walls and also the cores, when employed. The shaft 42, Fig. 5, extending through the mould, and formed with a squared portion 43 to receive an operating key &c., is furnished near each end with a screwed portion engaging a nut 44 furnished with pins 4 5 engaging slots 46 in a pair of arms 47 which are pivoted at 48 to the casing 1<a> and carry at their lower ends a T-bar 49 adapted to engage a bracket 2<c> on the mould wall 2b and collars 50 c the core pins 38. A pin 51 engages a groove in the nut 44 to prevent rotation thereof, and flat or spiral springs are mounted between the wall 2b and the casing, such springs holding the wall in its closed position until the core pins 38 have been withdrawn The ends of the bar 49 are bent to embrace the end walls, which are opened by springs and are closed by the ends of the bar 49 engaging cam surfaces thereon. Fig. 7 shows a modification in which the end walls are operated by eccentrics 58 on the shaft 42 adjustably connected to the wall by links 60, and eccentric pins 62. The core pins are engaged by a member 56 on the bar 49 movable through a pin-and-slot connection 56<a>, 56<b> to bring cut-away portions 56<c> into alignment with the pins to permit of their withdrawal and insertion into any of a number of apertures 57.
Patent GB-1476988-A (GB)
Title: Forming unit for machines for manufacturing welded pipes
IPC: B21D5/12
Filed: 1974-08-16
Abstract: 1476988 Pipe skelping apparatus OME OFFICINE MECCANICHE EMILANE SpA 16 Aug 1974 [8 March 1974] 36240/74 Heading B3E A roll forming unit in a pipe skelping machine comprises a standard 3, 5 slidable laterally of the machine and mounting a fixed shaft support and drive sleeve 9 and a vertically movable such sleeve 9, and a standard 15 rotatable about its vertical centre line and mounting two fixed elements supporting roll-mounting shafts 17, 177 in asymmetrical cantilevered fashion and two vertically movable elements supporting roll-mounting shafts 19, 199 in asymmetrical cantilevered fashion, with means for vertically adjusting the movable sleeve 9 and at least one of the shaft-mounting elements simultaneously. Thus either shafts 17, 19 may be in the operative position shown in Figs. 1 and 2, or the sleeves 9 may be withdrawn by jack 4, standard 15 may be raised by jack 12 to clear locking elements 14 on base 1, rotated through 180 degrees, and lowered again, and sleeves 9 engaged with shafts 177, 199. A change of rolls at each station may thus be prepared while the machine is running, and the change over effected quickly. The mechanism raising and lowering the upper sleeve 9 is driven by motor 31, and those raising and lowering shafts 19, 199 are driven by respective hand wheels 37, 38 and respective drive shafts 33, 34 engageable in a splined drive coupling 32 driven by motor 31.
Patent GB-534725-A (GB)
Title: Improvements in or relating to temporary couplings for fractured gas mains or water mains
IPC: F16L55/16
Filed: 1938-12-14
Abstract: 534,725. Pipe joints. HAMMOND, S. W. and COLBRAN, H. J. Dec. 14, 1938, No. 36385. [Class 99 (i)] A tubular connector f is inserted in the ends of a broken main and sealing tubes c surrounding the ends of the connector are inflated through the connections g and inflating tubes h. Bladders a which temporarily stop the main are withdrawn through openings e.
Patent GB-1013618-A (GB)
Title: Improved process for recovery of adipic acid precursors
IPC: C07C67/00
Filed: 1963-09-16
Abstract: <PICT:1013618/C2/1> In the manufacture of adipic acid by oxidizing cyclohexane with molecular oxygen in the liquid phase and further oxidizing the primary oxidation products so obtained, the primary oxidation products are mixed with water and then separated into an organic phase and an aqueous phase before they are further treated to produce a product suitable for further oxidation to adipic acid. The further oxidation is preferably effected in two stages with nitric acid.  As shown, cyclohexane is oxidized in a vessel 2 with air supplied through a pipe 3 and the oxidation products are treated with water fed through a pipe 4.  The mixture is separated in a decanter 6 into an organic layer and an aqueous layer, which pass to vessels 7, 8, respectively. The organic layer passes to a dry stripper 10, from which unoxidized cyclohexane is passed back to vessel 2 by pipe 13. The distillation residue from the dry stripper 10 passes to a wet stripper 18 to which water is supplied from a concentrator 35 (see below), and the distillate from the wet stripper is separated in decanter 14 into cyclohexane, which is returned to the vessel 2, and an aqueous layer which is sent to waste, wholly or in part, through pipe 15.  The distillation residue from the wet stripper passes to the adipic acid precursor storage vessel 25.  The aqueous portion of the cyclohexane oxidation produce collected in the vessel 8 passes to a concentrator 35, the distillate from which is fed to the wet stripper 18 (see above).  The residue from the concentrator 35 passes to a crystallizer 27, from which the crystals pass to a filter 30, the filter cake being transferred to the vessel 25. Comparative experimental results are given.  Specifications 1,013,617 and 1,013,619 are referred to.