baber/WOPTO huggingface dataset:
Patent GB-1521505-A (GB)
Title: Preparations containing silicone elastomers and pharmacologically active substances
IPC: C08L83/07
Filed: 1975-09-23
Abstract: 1521505 Sustained release silicone preparations SCHERING AG 23 Sept 1975 [24 Sept 1974] 38945/75 Heading A5B [Also in Division C3] A composition comprises a pharmacologically active substance and an LTV (i.e. Ptcatalysed) organopolysiloxane moulding composition containing a polysiloxane of units (a) R 3 SiO 0À5 , (b) R 2 ViSiO 0À5 , and (c) SiO 2 , wherein R is an organic radical free of aliphatic unsaturation, at least 50% of the radicals R being -CH 3 , and the ratio (a)+(b) : (c) is 0.4-1.5 : 1 and (b) : (c) is 0.02-0.5:1. The presence of the defined polysiloxane renders the polysiloxane composition compatible with unsaturated pharmacologically active substances, particularly non-ionic lipoid-soluble substances, notably steroids. Preferably the moulding composition contains I 20-100 pbw of a vinyl-terminated polydi (alkyl and/or phenyl) siloxane of 200-1600 units and 500- 200,000 cS/25C, II 1-50 pbw of the defined polysiloxane, III 5-15 pbw of a hydrogen siloxane R a  H b  SiO 4-a-b/2 , wherein a : b is 0.5- 10:1 and a+b is 1-2.5 and the molecule contains at least 3 Si atoms bearing an H atom, and IV a catalytic amount of Pt or a Pt compound; the composition may be prepared from a two-part pack. The active substance may be 10-60% of the weight of the silicone moulding composition, and a retardant, e.g. 2-75 times the weight of Pt of Cu<SP>++</SP> may be present. In Examples compositions are prepared consisting of 10-60 wt. % of a steroid, 38-82 wt. % of a moulding composition and in some cases 5 wt. % of BaSO 4  and/or 8-31 wt. % of finely divided SiO 2 ; in Ex. 5 a cupric retardant is added; the moulding compositions consist of 75 or 85 pbw of a vinyl-terminated polydimethylsiloxane of 1000 or 50000 cS/25C and 25 or 15 pbw of a copolymer of Me 3 SiO 0À5  units (45%), Me 2 SiO 0À5  units (15%) and SiO 2  units (40%), plus 8 pbw of a copolymer of Me 3 SiO 0À5  (16.7%), MeHSiO (50%) and Me 2 SiO (33.3%) or 4.5 pbw of a copolymer of Me 3 SiO 0À5  (29%), Me 2 HSiO 0À5  (33%) and SiO 2  (38%) and 10-30 ppm of H 2 PtCl 6  or Pt(CO) 2 Cl 2 ; the steroids are: norethisterone acetate or oenanthate, D-norgestrel, ethinyl oestradiol, oestradiol, progesterone, megestrol acetate, and mestranol. The compositions are shaped into cylindrical and tablet-shaped implants (Exs. 1-6, 20 and 21); vaginal caps, fabrics and tampons (Exs. 8, 12 and 13); cylindrical, Y- shaped and annular intrauterine or vaginal medicament carriers (Exs. 11, 15-19 and 22); denture coatings (Ex. 9); cylindrical oral medicament carriers (Ex. 10); and skin plasters (Ex. 14).
Patent GB-1017346-A (GB)
Title: Production of polyalkyl methacrylates and alkyl methacrylates
IPC: C08F20/12
Filed: 1962-10-16
Abstract: Poly-(alkyl methacrylates) are made by polymerizing the alkyl methacrylate present in the mixture obtained by the partial dehydrogenation of the corresponding alkyl isobutyrate. The resulting polymer may be depolymerized thermally to produce pure monomeric alkyl methacrylate.  The process is preferably applied to the polymerization of the mixture obtained by dehydrogenating methyl isobutyrate by the process of Specification 952,833.  Prior to polymerization the dehydrogenation mixture is preferably freed from the isobutyric acid, formaldehyde and methyl acrylate present therein.  The mixture is polymerized by means of catalysts such as hydrogen peroxide, benzoyl, acetyl and benzoyl acetyl peroxides, urea peroxide, tert.-butyl hydroperoxide alkali metal and ammonium persulphates and azodiisobutyronitrite. The mixture may be polymerized as such, or as an emulsion in water containing a sodium alkane sulphonate emulsifier.ALSO:Alkyl methacrylates are made by polymerizing the alkyl methacrylate present in the mixture obtained by the partial dehydrogenation of the corresponding alkyl isobutyrate, separating the resulting poly(alkyl methacrylate) and then pyrolyzing it to form the alkyl methacrylate. The process is preferably applied to the polymerization of the mixture obtained by dehydrogenating methyl isobutyrate by the process of Specification 952,833, which is purified by the removal of the formaldehyde, isobutyric acid and methyl acrylate present therein.  An Example (11) describes the pyrolysis of polymethyl methacrylate.
Patent GB-393496-A (GB)
IPC: D01H5/26
Filed: 1932-11-24
Abstract: 393,496. Drawing-apparatus provided with endless belts. GEGAUFF, C., 78, Rue de Verdun, Mulhouse, Haut-Rhin, France. Nov. 24, 1932, No. 33255. Convention date, Dec. 17, 1931. [Class 120 (ii).] In drawing apparatus pro vided with end less belts fo. machines used in spinning cotton wool, schappe artificial silk and other fibres, two rollers 3, 4 driven at the same speed effect the driving of the belt 2, the guide roller 1 being engaged by a spring-pressed hook 5 to maintain an effective drive. A curved guide 9 and tension roller 18 for the belt and floating rollers 11 .. 16 are employed.
Patent GB-1157382-A (GB)
Title: Improvements in or relating to Coke Ovens
IPC: C10B21/22
Filed: 1966-09-05
Abstract: 1,157,382. Coke ovens. SIMON-CARVES Ltd. 5 Sept., 1966 [6 Sept., 1965], No. 39562/66. Heading F4B. A horizontal chamber coke oven having a series of vertical heating flues and a series of regenerators has two lower inlets near the base of each heating flue and two further inlets at a higher level, the arrangement being such that, when the oven is heated with lean gas, gas is supplied to one of the lower inlets and air to the other lower inlet and similarly air and gas are supplied to the upper inlets and there is flow control means giving independent control of supply to both the lower and higher inlets. The control means may be perforated metal plates inserted in horizontal slots immediately above the sole flues, the plates being replaced by plates having a different gas flow rate or adjustments may be made to the existing plates. These adjustments can be made from a walkway situated above the waste gas flues in the lower cooler regions of the oven. During rich gas heating both the upper and lower inlets supply air, the rich gas being supplied through separate flues.
Patent GB-813942-A (GB)
Title: Improvements relating to aluminium refining cells
IPC: C25C3/16
Filed: 1956-12-31
Abstract: 813,942. Fused-electrolyte cells. L'INDUSTRIE DE L'ALUMINIUM S.A. POUR. Dec. 31, 1956 [Dec. 30, 1955], No. 39655/56. Class 41. A three-layer aluminium refining cell having in an outer wall of the cell one or more lateral channels of substantially constant cross-section in a plane perpendicular to the length of the channel, the channels communicating with the molten aluminium 1 in the cell, and conductors 8, e.g. of aluminium, contacting the molten metal in the channels, has each channel abruptly increased in width adjacent its outer end to provide a narrower portion 4 near the bath 1 ... 3 and a wider portion 5 remote from the bath 1 . . . 3, and the channels have a removable, heat-insulating cover 9 adjoining or connected to a cell hood, and a gate 11 at the entrance to the channel which allows the atmosphere 12 above the molten metal 1 in the bath to be separated from the atmosphere 13 above the metal in the channel to reduce heat losses due to convection. The average width of the portion 5 is 1.5 to 4 times, e.g. twice, the average width of the channel 4, which is narrower at the bottom than at the top, and in length is 1 to 3 times the average width of the portion 4, and the crosssection of the channel is such that the metal in it may be kept at a value above a certain critical value at which " pinch effect " takes place. By these measures the " pinch effect " is eliminated in the channels and a high temperature can be maintained in the cell without risk of melting of the solidified aluminium 7 in the portion 5. The cover 9 may be in separable sections or may be of the " roll-up " kind.
Patent GB-1000130-A (GB)
Title: Laminating method and apparatus
IPC: D21J1/16
Filed: 1963-10-08
Abstract: 1,000,130. Laminates and laminating. FMC CORPORATION. Oct. 8, 1963 [Dec. 26, 1962], No. 39663/63. Heading B5N. Sheets or films formed of or coated with thermoplastic material, for example regenerated cellulose films coated with a vinyl chloride/ vinylidene chloride copolymer, are laminated together by heating at least one of the surfaces to be contacted to within the softening range of temperature, pressing the surfaces together, removing the pressure, heating the sheets to the same or a lower temperature within the softening range, and cooling. As shown, webs 23, 25 are superficially heated by passage over an electric heater 11, are contacted by rollers 35 and pressed together between rollers 13, 15. The laminate so formed is then passed around an internally heated roller 17 and thence around cooled rollers 19, 21, and is rolled up at 43. In a modification, coated regenerated cellulose films 23, 22 are heated separately by the heater 11 and a heater 69 and are laminated to a film of polythene 79, fed between them.
Patent GB-941344-A (GB)
Title: Improvements in or relating to a centripetal turbine
IPC: F01D5/14
Filed: 1961-11-06
Abstract: 941,344. Turbines. R. BIRMANN. Nov. 6, 1961, No. 39666/61. Heading F1T. A centripetal elastic fluid turbine has the inlet edges of the blades rounded and the blade passages shaped so as to provide acceleration faces in the direction of flow, radial inward components of which at least balance the centrifugal forces acting outward on the flow. The blades 57 are highly bulbous at their entrance edges 120 to provide shockless flow entrance throughout a large range of inlet angles. The hollows regions 128 within the blades are open to the clearance between the blades 57 and the housing 20 and reduce leakage between the blade passages. Cooling air from a compressor mounted on the shaft 58 may be supplied through passages 130. The turbine housing is formed of prestressed ceramic material 20, 22 surrounded by a metal cylinder 12. The driving gases enter a whirl chamber 24 through tangential nozzles (not shown) and exhaust through a vaneless annular diffuser 32 which enables the turbine exit pressure to be sub-atmospheric. Specification 941,342 is referred to.
Patent GB-1102480-A (GB)
Title: Improvements in or relating to telephone exchange systems
Inventor: BROWELL LESLIE JAMES
IPC: H04M7/10
Filed: 1965-09-17
Abstract: 1,102,480. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. 12 Sept., 1966 [17 Sept., 1965], No. 39699/65. Heading H4K. In a system employing cross-barswitches operating on the self-steering principle, such as that described in Specification 890,235, bothway junctions are provided and the relay sets terminating such junctions are arranged to avoid " clash " between incoming and outgoing calls and to give preference to the former. Idle junctions are marked by negative potential on wire RR. When a junction is selected by a junction marker JMKR for use on an outgoing call, connections are made over the switch train to the relay group BWRG, and relay K energizes over the P wire, followed by switching relay JG, the junction BWJ being disconnected from the incoming transmission group ITRG. On an incoming call, relay PK is energized from ITRG and connects up K in a local circuit, thus completing a direct incoming path independent of rectifiers MR1, MR2. If, however, the junction has already been selected for an outgoing call, the operation of K is delayed by earth on wire KS and the earth on the P wire is diverted over wire BW to JMKR to initiate the selection of a fresh junction. The removal of earth from wire KS allows K to operate.
Patent GB-1064142-A (GB)
Title: Improved mass spectrometer
IPC: H01J49/32
Filed: 1963-10-09
Abstract: 1,064,142. Mass spectrometers. LEYBOLD HOLDING A.G. Oct. 9, 1963 [Oct. 9, 1962]. No. 39902/63. Heading HID. A mass spectrometer for analysis and leak detection is in the form of a cylindrical capacitor immersed in a uniform, constant, axial magnetic field, is provided with means for introducing ions of the gas to be analysed into both fields at a place spaced from the inner electrode, and is operated with the inner electrode as the cathode. Cylindrical electrodes 3, 4 are provided with end plates 2, 22, and screen electrodes 5, 6, 51, and 61, maintained at potentials appropriate to their diameter. Ions are either introduced from an external source through a window in the outer electrode, or are produced in the latter's immediate vicinity by an electron beam directed parallel to the capacitor axis just within the outer electrode. The fields are arranged such that all ions heavier than that which it is desired to detect hit the central electrode, secondary electrons produced by the latter being removed by a small potential difference maintained between the screen electrodes 5 and 51. Ions of desired masses pass out through windows, disposed at corresponding angular positions in the outer cylinder, to collector electrodes and D.C. amplifiers. In an alternative construction (Fig. 3, not shown) the screen electrodes extend the whole length of the capacitor and have apertures aligned with the windows in the outer electrode. In an alternative method of operation, orbiting ions of desired mass accumulate until deflected by collision or space charge, their pressure being detected by a high-frequency amplifier connected across the capacitor electrodes: a highfrequency signal corresponding to the resonance frequency of the desired ions is employed to modulate the ion source or ion-producing electron beam, or is applied across a pair of supplementary electrodes located near the outer electrode. To permit separation of the signal arising from heavier-than-desired ions from the modulated ion source or electron beam striking the inner electrode, the latter is formed in two separate portions (Fig. 2, not shown), facing towards and away from the ion source respectively, the current flowing in the latter portion permitting measurement of the ions of desired mass.
Patent GB-849056-A (GB)
Title: Respiratory apparatus
IPC: A62B9/02
Filed: 1958-12-11
Abstract: 849,056. Respiratory appliances. BENDIX AVIATION CORPORATION. Dec. 11, 1958 [Dec. 23, 1957], No. 40015/58. Class 81(2). Open circuit breathing apparatus comprises a face mask 21, a demand regulator 25 including a diaphragm 57 actuated in response to pressure in the mask, and a separate pressure breathing control section 87 through which gas is supplied to the mask and including means which expands responsive to decrease in ambient pressure with altitude and exerts a biasing force on the diaphragm above a predetermined altitude. The regulator comprises an exhaust section 72 to which the mask 21 is secured, the demand regulator section 25 and a section 87 which may be attached to enable the regulator to be used at high altitudes. Gas under pressure is supplied to the demand regulator section through an inlet 48 and flows to a main valve opening chamber 47 on one side of a piston 36 comprising a main valve and between the piston 36 and its cylinder 33 to a main valve closing chamber 46 on the other side of the piston. The main valve is normally spring-urged to closed position in which the piston 36 engages a seat 38 and thus cuts off a passage 40 from the gas supply. On inhalation, reduction in pressure in the breathing chamber 23 of the mask 21 causes the opening of slits in a diaphragm 67 which is normally spring-urged against a valve seat 82 to form an exhalation valve in the exhaust section 72. Gas behind the diaphragm 67, in gas supply passages 64 arranged around the main valve and on the downstream side of the main valve then flows into the mask breathing chamber. A demand diaphragm 57 downstream of the main valve then moves rearwardly in the regulator and, through a rod 56, lifts a pilot valve 52 from its seat 51 to permit gas in the main valve closing chamber 46 to pass through a relief passage 50 disposed centrally in the piston 36. Gas pressure in the main valve opening chamber 47 then lifts the piston from its seat 38 so that gas is supplied through the main valve, the supply passages 64 and the diaphragm slits 76 (not shown) to the mask. Supply of gas to the mask continues until the pressure in the breathing chamber is sufficient to close the slits 76 against a perforated cup 73 inside the exhalation diaphragm 67 and press this diaphragm against its spring 24 (not shown) away from its seat 82. Exhalation then takes place, the exhaled gas passing to atmosphere through an exhaust passage 85. The downstream side of the main valve is thus cut off from the mask and the resulting rise in pressure moves the demand diaphragm 57 forwardly so that the pilot valve 52 closes and the resulting increase in pressure in valve closing chamber 46 causes the main valve to close. A lowered shield 58 between the main valve and the demand diaphragm ensures that the diaphragm is responsive only to pressure changes downstream of the valve. The front section 87 which includes an aneroid chamber 89 may be fitted on the rear of the regulator to control the demand diaphragm 57 in accordance with altitude.
Patent GB-1526983-A (GB)
Title: Method and apparatus for repositioning an anchor
IPC: B63B27/36
Filed: 1976-09-27
Abstract: 1526983 Retrieving and launching anchor marker bouys BROWN & ROOT Inc 27 Sept 1976 [8 Jan 1976] 40038/76 Heading B7A To move an anchor during offshore work, e.g. with a pipe laying barge, its marker bouy 4 is picked up by a catching unit 7 and moved to a position 12 on board a vessel where the buoy is firmly held for its associated pendant line to be attached to a winch before raising, moving and relaying the anchor. As described the catching unit 7 comprises a fork-like member 73 for engaging the underside of a buoy 4 and a part 71 slidably mounted in a frame 99. The frame 99 is slidably mounted in a pivotable mounting 91 located on the stern 11 of the vessel 1, e.g. a tug. Upon hauling in a cable 86 on a winch 87, the unit 7 moves upwardly on the frame 99 to pick the buoy 4 from the water. Upon its upper ends engaging locking mechanisms on the frame 99 the frame 99 is also lifted through and pivoted about the mounting 91, these movements being effected by a cable 82, 83 rove around a sheave 84. Upon the frame 99 pivoting to adopt a horizontal position on the vessel's deck, the locking mechanisms are released and the unit 7 hauled by the cable 86 on to a track 14 until the buoy 4 is clamped between posts 15 and the fork member 73. The buoy is relaunched after its anchor has been repositioned by moving the vessel 1 away and slacking on cable 86. Hydraulic dampers 182, 184 may be connected between the vessel and the frame 99 and the unit 7 may carry electromagnets for holding a buoy more firmly.
Patent GB-1477654-A (GB)
Title: Output control device for a hydraulic pump
IPC: F04B1/26
Filed: 1974-09-13
Abstract: 1477654 Fluid-pressure servomotor systems TOKYO KEIKI CO Ltd 13 Sept 1974 [20 Sept 1973] 40041/74 Heading G3P The output of a variable displacement pump is controlled by a valve 21 responsive to pressure in a passage 12d to open an inlet 16a in a sleeve 16 and allow fluid to enter a cylinder 13 and displace a piston 11 controlling the pump yoke 7. A cam 14 which moves downwardly with the piston may displace the sleeve until the inlet 16a is once more closed. The cam may be replaced by a cylindrical cam to provide constant pressure control or by a cam having upper and lower portions which are, respectively, cylindrical and hyperbolic to provide combined control of pressure and output. The load on the valve may be adjusted by a screw 18 and a spring 19 and the valve may be provided with an internal passage (21c) Fig. 3 (not shown) so that fluid-pressure acts on both of its ends. The yoke 7 does not rotate but is tilted by the piston 11 to adjust the displacement of the pump pistons which are mounted in a rotating cylinder block (6) Fig. 1 (not shown).
Patent GB-1023695-A (GB)
Title: A ropeway conveyor
IPC: B61B12/00
Filed: 1962-10-23
Abstract: 1,023,695. Rope railways. G. DUSTERLOH FABRIK FUR BERGWERKSBEDARF G.m.b.H. Oct. 23, 1962 [Oct. 25, 1961], No. 40134/62. Heading B7L. A ropeway conveyer comprises an endless rope 3 which may be driven in one direction or the other by a driving pulley 1 through a reversing pulley 2 of a winch (not shown). A rail-confined car 8 coupled to the rope 3 is thus transported between a loading and an unloading station. Tension pulleys 5, connected by a rope 10 passing round a pulley 6 loaded by a spring 7, guided in guides 11 transfer tension from the upper to the lower run of the rope 3, by forming a loop round a lower pulley 4 when the drive is as shown by arrow-heads, and from the lower run to the upper run when the driving pulley 1 is reversed.
Patent GB-1407181-A (GB)
Title: Polymerization
IPC: C08F299/04
Filed: 1973-08-24
Abstract: 1407181 Polymerization initiator PPG INDUSTRIES Inc 24 Aug 1973 [28 Aug 1972] 40163/73 Heading C3P The polymerization of ethylenically unsaturated monomers is effected in the presence of an initiator comprising in combination a carboxylic anhydride, a percarboxylic acid and an alkaline buffering agent. A further free radical initiator may be present, especially a peroxydicarbonate ester. Examples relate to the suspension polymerization of vinyl chloride.
Patent GB-1121912-A (GB)
Title: Improvements in or relating to the continuous hydrolysis of fats or oils with water
IPC: C11C1/04
Filed: 1965-09-22
Abstract: A process for the continuous hydrolysis of fats or oils with water to produce fatty acids and glycerol is carried out at a temperature not exceeding 245 DEG  C. and under a pressure which is sufficiently high to prevent the formation of a vapour phase above the reaction mixture, the reactants being conducted in counter-current relation through at least two stages, in both or all of which the pressure and temperature are kept at substantially the same levels and in each of which the glycerol-water mixture is recirculated at a rate which is a multiple of the fatty phase throughput rate in the stage, the fat-fatty acid mixture being substantially completely withdrawn from each stage, and fresh water or glycerol-water mixture is admitted to each stage into the rising fatty acid or fatty acid-fat mixture above the inlet through which the recirculating liquid is supplied into the rising fatty acid or fatty acid-fat mixture. Apparatus for carrying out the process is described.
Patent GB-1017622-A (GB)
Title: Stabilised cellulose ester compositions
Filed: 1962-10-26
Abstract: 1,017,622. Cellulose ester spinning solutions. EASTMAN KODAK CO. Oct. 26, 1962 [Oct. 26, 1961], No. 40515/62. Heading B5B. Cellulose ester spinning solutions contain 0À1-5% by weight, based on the weight of cellulose ester, of zinc monoethyl phosphate. The compositions, and filaments or films made from them, are thereby rendered more resistant to ultra-violet radiation. In examples, yarns are spun from acetone solutions of secondary cellulose acetate containing zinc monoalkyl phosphate and, in some examples, titanium dioxide.