baber/WOPTO huggingface dataset:
Patent GB-960335-A (GB)
Title: Method for reducing the ash content of olefin polymers and copolymers
IPC: B01J19/18
Filed: 1962-11-15
Abstract: The ash-content of solid homo- and copolymers of mono-1-olefins prepared by bulk polymerization in the presence of a Ziegler-type polymerization catalyst is reduced by a process which comprises mixing the polymer or copolymer containing effluent from the polymerization with a diketone under such conditions that the unreacted monomer in the effluent is maintained in the liquid phase, washing the treated effluent by countercurrent flow with a low-boiling hydrocarbon liquid under such conditions that the unreacted monomer and hydrocarbon remain in the liquid phase, and recovering the solid polymer The process is preferably effected in a continuous manner, and such a process is described in the Specification and illustrated by a flow diagram. The 1-olefin may be ethylene, propylene, 1-butene, 1-pentene, 3-methyl-1-butene, and mixtures. The Specification contains long lists of conventional catalysts, and diketones. Exemplified catalysts are a mixture of diethyl aluminium chloride and a TiCl3 complex made by reacting TiCl4 and Al. The exemplified diketone is acetylacetonate.  The wash liquor may be propylene, n-pentane, 1-butene, 3-methyl-1-butene, or a mixture of propylene and n-pentane.
Patent GB-1306628-A (GB)
Title: Device for pulsating a liquid in a column
IPC: B01J19/18
Filed: 1971-09-20
Abstract: 1306628 Hydraulic pulse generating apparatus STAMICARBON N V 20 Sept 1971 [29 Sept 1970 10 April 1971] 43744/71 Heading F1P Liquid-filled columns 1, 2 Fig. 1 containing solid packing 3, 4 are subjected to pulsations by connecting their bases by lines 17, 18 to ports 33, 34 of a rotatably driven valve 19 having ports 30, 31 respectively connected by lines 23, 24 to the delivery and inlet sides of a pump 21. Thus when the valve rotor may be an elliptical plate is in the full line position pump delivery is connected through line 18 to column 2 whilst pump suction is connected through line 17 to column 1. Each column has light and heavy liquid inlets 9, 10 and corresponding outlets 13, 14 and the pumped liquid may comprise the heavy liquid or a liquid immiscible therewith. For use with a single column valve port 34 is connected to the head of the column. In a modification the inlet and delivery side of a pump 206 Fig. 5 are selectively connected through air vessels 204, 205 and mechanically connected rotary valves 202, 203 to the base of a pulsation column 201.
Patent GB-1118890-A (GB)
IPC: E04G17/00
Filed: 1966-09-30
Abstract: 1,118,890. Shuttering. WALTER BARR PTY. Ltd. 30 Sept., 1966 [16 Dec., 1965], No. 43855/66. Heading E1S. Horizontal beam &c. shuttering 12 is temporarily supported, while the props are being removed when the concrete has set, by heads 7 on plastics rods 6 which pass through holes 11 in the shuttering and are embedded in the concrete, the rods having parts 10 of reduced cross-section which a pull on the shuttering will break to release the shuttering. The non- headed end 8 of the rod is notched to anchor this support in the concrete.
Patent GB-1420512-A (GB)
Title: Pneumatic transportation of goods
IPC: B65G51/22
Filed: 1973-09-20
Abstract: 1420512 Pneumatic shuttle conveyers SPETSIALNOE KONSTRUKTORSKOE BJURO "TRANSNEFTAVTOMATIKA" 20 Sept 1973 44080/73 Heading B8A A pneumatic shuttle conveying plant includes devices for temporarily halting shuttles, the devices being mounted in the tube line at predetermined spacing from one another, the sections thus defined accommodating a single shuttle or train of shuttles. Each device is opened via a by-pass valve to direct gas from the tube line to halt the shuttle, and sensors mounted downstream of each device produce signals which effect opening of the by-pass valve of the adjacent device and closing of the by-pass valve of the preceding device. The Figure shows the initial position of the system, by-pass valves 36 of devices 35 being closed, sluice gate 17 and valves 23, 10 and 14 being open and sluice gate 16 and valves 15 and 11 being closed. On entry of a shuttle into unloading station 2, switch 4 connects line 6 with line 3 and valve 23 is closed. Valve 11 is then opened and valve 10 simultaneously closed. Pressurized air from source 9 forwards the shuttle into line 6, and sensor 43 signals that a shuttle or train of shuttles has left station 2. Valve 10 is then opened and valve 11 simultaneously closed, switch 4 connects line 5 with line 3, valve 23 then opens and station 2 is ready to receive another shuttle. The shuttle in line 6, meanwhile, passes the first device 35 without being halted. Sensor 40 acts on passage of the shuttle to effect opening of valve 36 of this device 35. Only when this valve is completely open and the portion a of the tube is unoccupied, may a new shuttle enter line 6. Sensor 42 reacts to passage of the first shuttle to cause closure of sluice gate 17 and valve 23 of portion b of the tube. Sluice gate 16 and valve 15 are then opened, valve 14 is then closed, the shuttle moves on and actuates sensor 41, to indicate that the second device 35 is unoccupied. Valves 14, 15, 23 and sluice gates 16 and 17 are operated in reverse order to return them to their previous state. The second shuttle also passes the first device without being halted and operates the sensors in the same way as the first device. A plurality of shuttles may thus be conveyed with a predetermined spacing between each pair.
Patent GB-1187959-A (GB)
Title: Improvements in or relating to Telecommunications Exchange Systems.
IPC: H04Q3/00
Filed: 1967-09-28
Abstract: 1,187,959. Automatic exchange systems. SIEMENS A.G. 28 Sept., 1967 [29 Sept., 1966], No. 44154/67. Heading H4K. In the event of a subscriber wishing to speak to a party engaged in an existing connection a call to that party causes an audible tone to be injected into the connection the wanted party being signalled that the intrusion concerns him. The wanted party may be signalled by announcing the number of the wanted party or by temporarily breaking the existing connection and injecting the audible tone into the wanted party's line circuit. Since charges accrue to the calling party of the existing connection only he may effect transfer of the connection by dialling the digit 1. Should the calling party in the existing connection be the party wanted for the intrusion he can effect transfer for an interim conversation with the intruder the called party in the original connection being held until the intruder hangs up when the original connection is restored. Should the caller party in the existing connection be the party wanted by the intruder the calling party effects transfer of the connection by dialling 1 and the original connection is released. The audible tone warning of an intrusion may be applied automatically or may be applied at the instance of the intruding party only if he wishes to override the busy condition. The arrangement may be applied to a PBX using rotary selectors, Fig. 1, not shown, or to a PBX comprising a multistage marker controlled switching network and in which exchange conditions are recorded in line state stores and in storage compartments related to junctor terminals, Fig. 2, not shown. In the marker controlled system the connection to a temporarily discarded party to an original connection is not held but is newly established as and when the interim conversation is completed. Break-in by parties having the appropriate class-of-service may be immediate without the need for consent.
Patent GB-1204498-A (GB)
Title: Improvements in multi-channel feedback signalling apparatus
Inventor: ESCOBOSA ALFONSO SOTO
IPC: H03F1/52
Filed: 1967-09-28
Abstract: 1,204,498. Fluid-pressure servomotor systems. NORTH AMERICAN ROCKWELL CORP. Sept.28, 1967 [Sept.28, 1966], No.44273/67. Heading G3P. [Also in Division H3] A redundant multi-channel feedback signalling apparatus comprises an amplitude-limiting means, such as 43a, interposed between an output of each signalling channel and the common output 40. The means consists of a piston 47 mounted with a radial clearance and between centering springs 51, 52 in a housing 44 which has its inlet 45 connected to an electro-hydraulic servovalve 31a and its outlet 46 in communication with a summing manifold 37 supplying an actuator 39. Valve faces 48 on the piston close the inlet or outlet in response to excessive fluid-flow caused by a signal channel failure. Housing 44 is non-magnetic and provided with an excitation winding 49 and pick-off windings 50a, 50b to provide a feedback signal having a phase and amplitude corresponding to the displacement of the piston 147 which is magnetic. A lineal position pick-off 41a, preferably of the A-C type, provides a further feedback signal corresponding to the position of the actuator 39, both feedbacks being fed into an amplifier 36a which also receives the input signal to the system and energizes the excitation winding 32 of the servovalve through a commutated A-C electric signalling stage 35.
Patent GB-914921-A (GB)
Title: Therapeutic compositions for the treatment of macrocytic anemias
IPC: A61K31/505
Filed: 1959-12-31
Abstract: Pharmaceutical compositions for the treatment of megaloblastic macrocytic anemias comprise histidine or a salt thereof in admixture with one or more of folic acid, serine and p-aminobenzoic acid or salts thereof.  The compositions may also comprise conventional pharmaceutical excipients and may be in forms suitable for oral or parenteral administration.
Patent GB-1000483-A (GB)
Title: Improvements in transistor oscillator and amplifier circuits
Inventor: ARMER HERBERT LESLIE
IPC: H03B5/12
Filed: 1960-12-28
Abstract: 1,000,483. Transistor amplifying and oscillating circuits. M.S.S. RECORDING CO. Ltd. Dec. 27, 1961 [Dec. 28, 1960], No. 44451/60. Heading H3T. In a transistor amplifying or oscillating circuit at least one transistor is caused to operate in its saturation state for a major part of the period when it is conducting by connecting two inductors to the transistor, one of the inductors being in parallel with a capacitor, such that for alternating current purposes the transistor acts as a short circuit connecting the two inductors in parallel with each other. In an oscillator circuit, Fig. 1, a transistor T has two inductors L1, L2 connected as shown with capacitor C3 connected between collector and earth, feedback being provided by phase shifting network L3 and C2. When the transistor conducts it acts as a switch to connect for A.C. purposes the inductor L2 in parallel with the parallel combination of inductor L1 and capacitor C3, the impedance of the D.C. source being negligible. Thus the difference in potential between the collector and emitter electrodes of the transistor will remain small and the transistor will operate in its saturation state, for any variations in the oscillatory voltage produced by the circuit are closely followed by the emitter and collector together. In a further embodiment, Fig. 2 (not shown) the earth and negative supply terminals are reversed and the emitter of the transistor is connected to the positive supply line which is no longer at earth potential. In Fig. 3 (not shown) the collector of the transistor is directly connected to the negative supply line and the two inductors are connected between the emitter and positive supply line, the junction points of the two inductors being earthed. Fig. 4 shows a push-pull oscillator comprising two transistors T1, T2 operated in their saturated state, the circuit including a centretapped collector inductor L1 tuned by capacitor C1 and a centre-tapped emitter inductor L4. During each half cycle of operation the transistor which is conducting connects two inductors in parallel as described in the first embodiment so that the difference in potential of the emitter and collector electrodes remains small. Diodes MR1 and MR2 provide temperature compensation to the circuit. In the circuits of Fig. 5 and Figs. 6, 7 (not shown) a tuned amplifier includes inductors L1, L2 which for A.C. purposes are connected in parallel with each other by transistor T when the latter conducts, so that the collector and emitter follows together the variations in output voltage and allow the transistor to operate in its saturation state.
Patent GB-961509-A (GB)
Title: Polyether polyester resin
IPC: C08G63/676
Filed: 1962-11-26
Abstract: Curable, flexible polyether polyester resins are obtained by reacting a dihydric alcohol of formula: <FORM:0961509/C3/1> where A is a 2-alkylidene radical having 3 or 4 carbon atoms, R is an alkylene radical having 2 to 4 carbon atoms, x and y are each at least one and the average sum of x and y is at least 10 and not more than 20, with an equimolar quantity of dicarboxylic acid or anhydride, at least the major portion of which comprises an alpha unsaturated dicarboxylic acid or anhydride. The resins may be copolymerized with an aromatic vinyl compound, e.g. styrene, and/or blended with a rigid polyester resin. In examples resins are prepared by reacting polyoxypropylene isopropylidene diphenols where the sums of x and y are 16 and 10, and a polyoxyethylene isopropylidene diphenol where the sum of x and y is 20, with fumaric acid and maleic anhydride; the resins obtained are blended with styrene and with a mixture of styrene and a polyester obtained from fumaric acid and a polyoxypropylene isopropylidene diphenol where the sum of x and y is 2.2, and the blends are cured by heating with benzoyl peroxide catalyst. Specifications 722,264 and 722,265 are referred to.
Patent GB-1474777-A (GB)
Title: Process for producing flame retardant shaped articles of thermoplastic synthetic resins
IPC: C08J7/00
Filed: 1974-10-16
Abstract: 1474777 Flame retardant articles TOKUYAMA SODA KK 16 Oct 1974 [29 Oct 1973 31 Oct 1973] 44835/74 Heading C3P Flame retardant shaped articles are prepared by incorporating in 100 parts by weight of a thermoplastic synthetic resin (1) 0À01 to 500 parts by weight of a surfactant and (2) 100 to 500 parts by weight of an inorganic metal compound capable of forming a hydrate by reacting with water or aqueous acid solution, forming the resulting composition into a shaped article and contacting the shaped article with water or aqueous acid solution thereby converting the metal compound into a hydrate. The article may be a sheet or filament, which may be subjected to drawing and further treatment with conventional flame proofing agents. The resin may be a polymer of an olefin, styrene, vinyl chloride, vinyl acetate, methyl acrylate or acrylonitrile, or a polyester, polyamide or polyacetal. The metal compound may be an oxide, hydroxide or salt. Many examples are given using resins selected from polypropylene, polyethylene and polyvinyl chloride; surfactants selected from polyethylene oxide octylphenol/ formaldehyde condensates, cetyl alcohol/ethylene oxide/propylene oxide condensates, polyethylene oxide/alkylamine condensates, polyoxyethylene oleate and sodium dodecylbenzene sulphonate; metal compounds selected from calcium carbonate, calcium hydroxide, tricalcium phosphate, gypsum, cement, magnesium sulphate, basic magnesium carbonate and magnesium hydrogen phosphate; treating agents selected from water, aqueous sulphuric acid solution and aqueous oxalic acid solution; and conventional flame-proofing agents selected from aqueous solutions of ammonium dihydrogen phosphate, ammonium sulphate and ammonium molybdate.
Patent GB-448751-A (GB)
IPC: C10B57/18
Abstract: 448,751. Gaseous mixtures. NON- POISONOUS GAS HOLDING CO., Ltd., Vaduz, Liechtenstein. Oct. 18, 1935, No. 28865. Convention date, Sept. 26. [Class 55 (ii)] In the manufacture of non-poisonous gas from town gas by passing the gas charged with steam at elevated temperature over a suitable contact substance the resulting gas, which contains excess steam, is dried simultaneously with the cooling of the gas by direct irrigation with cold water absorbing liquids such as calcium chloride solution, glycerine, or thiocyanate solutions. The hot, water-containing liquids obtained may then be regenerated by using them for pre-heating the poisonous gas and charging it with steam before the catalysis. Specification. 361,476 is referred to.
Patent GB-1375087-A (GB)
IPC: G06K7/08
Filed: 1972-09-29
Abstract: 1375087 Identity card: key REMVAC SYSTEMS CORP 29 Sept 1972 44987/72 Headings B6A A42A and A42D An identity card or a key 10 contains conductive plates in a plastics coating. A central plate 15 is joined to smaller plates 20 arranged in rows by strips 22 which may be broken or left complete to represent bits of data. A reader for the card has a slot receiving the card such that the card can only be inserted one way round to operate a voltage supply switch S. The reader has a central plate 28 corresponding to plate 15 and connected via the switch to a voltage source with smaller plates 33 in rows corresponding to plates 20 each being connected to a detector. The two pairs of plates 28, 15 and 33, 21 form two capacitors in series and if strip 21 is complete a voltage applied to strip 28 charges the capacitors and the charging current and voltage at plate 33 is detected by MOSFET 85 to operate S.C.R. 86.
Patent GB-1026749-A (GB)
Title: Closure apparatus for pressure chamber
IPC: E06B5/12
Filed: 1962-08-24
Abstract: 1,026,749. Pressure-resisting doors. WILMOT CASTLE CO. Sept. 20, 1962 [Sept. 21, 1961; Dec. 8, 1961], No. 51216/65. Divided out of 1,026,741. Heading F2P. [Also in Division E2] The subject matter of this Specification is ' substantially the same as that of Specification 1,013,693 but the claims differ.
Patent GB-1031409-A (GB)
Title: Process for the purification of 2, 2, 2-trifluoro-1-chloro-1-bromo-ethane
IPC: C07C17/395
Filed: 1964-11-06
Abstract: 2,2,2 - Trifluoro - 1 - chloro - 1 - bromo - ethane containing one or more fluorinated halogen butenes as impurities, is purified by treatment with an alcoholic solution of an alkali metal hydroxide or alcoholate.  It is preferred to use at least 2 mols. of alkali metal hydroxide or alcoholate per mol. of halogen butene.  Suitable solutions are those containing 1-20 by weight of, e.g. potassium or sodium hydroxide, methylate, ethylate or propionate in methanol, ethanol or propanol.  The purification may be effected by allowing the mixture to stand at 0-25 DEG  C. and then separating the fluoro-chloro-bromo-ethane, e.g. by distillation.
Patent GB-1305806-A (GB)
IPC: F16J15/34
Filed: 1970-09-25
Abstract: 1305806 End-face seals R HEINRICH 25 Sept 1970 [25 Sept 1969 (3)] 45713/70 Heading F2B  The seal ring 2 of an end-face seal, Fig. 3, is urged into sealing contact with, for example, the end face of a pump impeller 14 by means of an elastomeric 0-ring 3 which is subjected to stress by the relative axial movement of the seal ring and its housing 1, the seal ring being inserted into its housing to cause it to roll about its cross-sectional centreline through an angle between 0 and 180 degrees to produce the stress and the arrangement being such that the seal ring is urged into sealing contact solely by this stress in addition to the action of any fluid pressure to which the seal is exposed. Preferably the 0-ring is installed by rolling it by approximately 90 degrees to produce the pressing force required for operation of the seal ring 2. If desired, the pressing force produced by the 0-ring may be increased by the fluid pressure of the pump. In Fig. 6, two 0- rings of different material are employed, the ring 120 which is subjected to oil being made of nitrile rubber while the ring 130 subjected to water is made of ethylene propylene rubber. In Fig. 8, two 0-rings 140, 150 are employed coaxially. In Fig. 5 (not shown), the gap in which the 0-ring (90) rolls is tapered and formed by oppositely directed cone surfaces, the cone angle of the seal ring bore (70) being 4 degrees while that of the housing flange (40) is 6 degrees.
Patent GB-954619-A (GB)
Title: A device for opening and closing sliding roofs of vehicles
IPC: B60J7/057
Filed: 1962-12-05
Abstract: 954,619. Sliding roofs. WEBASTO-WERK G.m.b.H. Dec. 5, 1962 [Dec. 11, 1961], No. 45928/62. Addition to 923,270. Heading B7B. A tube 10 which is connected by the eye 12 to a sliding roof panel is housed in a fixed guide 11 and is operated by the cable 8. Two such units are preferably housed in the rain gutters adjacent the panel.
Patent GB-1219892-A (GB)
Title: Vehicle suspension
Inventor: CATTERALL JOHN DONALD
IPC: B60G11/12
Filed: 1967-01-21
Abstract: 1,219,892. Tandem wheel suspensions. J. D. CATTERALL, and R. A. S. MOSS. 11 April, 1968 [21 Jan., 1967; 4 Oct., 1967; 9 Oct., 1967], Nos. 3235/67, 45156/67 and 46044/67. Heading B7D. A tandem wheel suspension for a caravan or a motor vehicle comprises a pair of swinging arms pivotally connected to suspension mounting means, a pivoted balance beam interconnecting the swinging arms and coil spring means connected to the balance beam so as to allow spring movement of the swinging arms. In Fig. 2, the balance beam 25 is pivotally connected to a post 23 secured to one of transverse chassis members 12a, one of trailing arms 10 is connected to the balance beam through a coil spring 31 and a coaxial hydraulic damper 32, and the other trailing arm 10 is connected to the balance beam through a rod 29. In Fig. 4, the balance beam 49 is pivotally connected directly to one trailing arm 40 and through a shackle 47 to the other, and a coil spring 60 and damper 47 connect the balance beam to a gantry structure 54 on the chassis. In Fig. 5 (not shown), the balance beam is connected to both trailing arms through shackles.
Patent GB-1157660-A (GB)
Title: Heat Exchangers
Inventor: EDGE DENNIS ALBERT
IPC: F28F21/08
Filed: 1966-10-14
Abstract: 1,157,660. Copper alloys. IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd. Oct. 13, 1967 [Oct. 14, 1966], No.46069/66. Heading C7A. Heat exchange elements, e.g. for a motor car radiator, are formed from an alloy consisting, by weight, of Al 0À02 - 0À5% Cu and impurities - balance. The impurities may be Zn and P. Strip suitable for fabrication into heat exchange elements may be made by pre-heating slab ingot at 800‹C., hotrolling, cold-rolling twice and annealing at 500‹C., and finally cold-rolling to a thickness of 0À001 - 0À01 inch.