baber/WOPTO huggingface dataset:
Patent GB-1257217-A (GB)
IPC: H05B6/76
Filed: 1969-02-14
Abstract: 1,257,217. Microwave ovens. VARIAN ASSOCIATES. 14 Feb., 1969 [16 Feb., 1968], No. 8262/69. Heading H5H. Leakage from the door of a microwave oven is prevented by a microwave seal comprising a transmission line structure 19 which consists of a plurality of serially connected sections e.g. 28a, 28b, 28c extending away from the door opening 23, each section is equal to an odd multiple of a # at the operating frequency, the even numbered sections counting from the periphery of opening 23 e.g. 28b have a higher characteristic impedance than their immediately adjacent sections e.g. 28a, 28c, and end 26 of the transmission linestructure 19 is terminated -to provide a low reflected impedance at the end 24 of the structure 19 nearest the oven opening. As shown, the transmission line structure comprises a pair of quarter wavelength conductor bars 34, 36 secured to oven wall 12<SP>1</SP> and spaced apart by a quarter wavelength to define three quarter wavelength sections 28a, 28b, 28c. A low loss polypropylene coating or tape 38 insulates the bars 34, 36 from the door 21. With an odd number of sections as shown the termination 26 is open circuited and with an even number of sections the termination 26 is shortcircuited to provide the low reflected impedance at the end 24. In a sliding door arrangement Fig. 7 (not shown), three # wide conductor bars secured to the oven wall are spaced apart by two # polypropylene bars which are slightly thicker than the conductor bars. The polypropylene bars are secured in place by spring loaded pins on the conductor bars which engage recesses in the polypropylene bars. The door is guided in L-section polypropylene guides secured adjacent the external periphery of the transmission line structure. The bars may be fixed to the door instead of the wall and the conductor bars may be embedded in insulating material. Instead of conducting bars secured to the oven wall or door, the door or wall may be undulated to provide the transmission line structure. If it is desired to operate the oven at several distinct frequencies, a plurality of transmission line structures, one for each structure may be connected in series. In Fig. 9 (not shown) a transmission line structure suitable for the two industrial frequencies 915 MHz and 2450 MHz is disclosed. This structure comprises two conductor bars equal to a # at 915 MHz with an interposed conductor bar equal to # at 2450 Mz, the spacing of the interposed bar from the other bars also being # at the latter frequency. The structure acts as a five section structure at the higher frequency and as a three section structure at the lower frequency. The door may be hinged.
Patent GB-1257326-A (GB)
IPC: F16L59/14
Filed: 1968-12-13
Abstract: 1,257,326. Pipe insulation shells. ROCKWOOL AB 13 Dec., 1968 [21 Dec., 1967], No. 59335/68. Heading F2P. A parallelepipedic body, intended for use as cylindrical, or part-cylindrical, pipe heat insulation shell and made. from compressed wool, or similar material, such. as mineral wool, is characterized in that the body is, in its preparatory state; compressed into parallelepipedic form, provided with a number of preferably string-like bonds 14-17 which are drawn through the pipe shell at, or close to, its peripheries which are to become inner and outer with respect to the tube. to which it is fitted, and has means 18 for preventing the bonds from unintentionally being released. The bonds, adjacent the potential outer periphery of the body, are cut before it is applied to a pipe and assumes a completely, or partial, cylindrical form. by the fanning out of its outer surface. The body is formed by a numberof strips (11, L2, 13 &c.), Fig. 1, not shown, cut from a crossorientated mat the strips being stacked one upon the other to form the rectangularlyshaped body which is compressed and maintained in this condition by means of the strings 14-17 and washers 18 sothat the body can be easily stored andtransported. A single shell would be large enough to completely surround a small pipe while three shells may be necessary to enclose a large pipe. The shell may be covered by a simple bandaging. The body may be. made of mineral, rook, glass wool, or the like and the strings may be sewn through the body or, as shown, drawn through holes. Craft paper may cover the body. Reference has been directed by the Comptroller to Specification 880,827.
Patent GB-1258226-A (GB)
IPC: H01L21/223
Filed: 1970-09-02
Abstract: 1,258,226. Diffusing dopants into semiconductors. SIEMENS A.G. 2 Sept., 1970 [27 Feb., 1970], No. 41956/70. Heading H1K. Apparatus for diffusing dopants into semiconductor materials in vacuo comprises a sealed container 1 of quartz closed by a quartz stopper 15, fused in after introduction of an ampoule 2 containing semi-conductor wafers 3, and closed by a stopper with apertures of area small compared with the cross-section of the ampoule, and a vessel 8 containing dopant 9 e.g. A1, Ga; the ampoule being of the same substance as the wafers and held between the stopper and a support 13. Heating coils 11, 12 surrounding the container permit separate adjustment of the ampoule and dopant temperatures, and dopant vapour penetrates into container 1 for diffusion .into the wafers. The exterior wall of the ampoule is polycrystalline which preferentially accumulates part of the dopant and any trace heavy metals, whose concentration is thus reduced. The S/C wafers may be silicon, germanium, silicon carbide, pallium arsenide or other IIIBVB compounds.
Patent GB-1258326-A (GB)
IPC: F23G5/16
Filed: 1969-05-05
Abstract: 1,258,326. Burning refuse. IFB-INGENIEURBURO FUR BRENNTECHNIK G.m.b.H. 5 May, 1969 [31 May, 1968], No. 22790/69. Heading F4B. Apparatus for burning refuse has a conical portion 1, the lowest generatrix 7 of which rises from the narrow to the wide cross-section at an angle of 5 to 10 degrees to the horizontal. The rotating drum 4 has a cylindrical portion 11 coaxial with the conical portion and has grate bars 13 bent inwardly at the inlet opening 25. Obliquely disposed blades 18 disposed on grate bars 8 convey refuse to the wide portion 6 of the conical portion. The refuse is delivered by a shoot 37 and burnt by a burner 36 air being supplied from a tube 27 and through a duct 50 in a shaft 3 on the axis of the conical portion 1. Combustion gases rise into a chamber 28 and are burnt by another burner 40. A flared outlet 38 from chamber 28 has air openings 39. The drum 4 is mounted via columns 29 on a rotary ball-bearing mounting 30 driven by gearing 32 from a motor 33. A hand wheel 35 is provided for displacing a cap 26 to withdraw ash through the grate bars. An ash pit 34 is also provided.
Patent GB-1258380-A (GB)
IPC: C12R1/065
Filed: 1970-03-13
Abstract: 1,258,380. Producing L-lysine by fermentation. AJINOMOTO CO. Inc. 13 March, 1970 [20 March, 1969], No. 12125/70. Heading C2C. L-lysine is produced by culturing under aerobic conditions a lysine-producing strain, which belongs to one of the genera Brevibacterium, Corynebacterium, Microbacterium and Micrococcus and is resistant to s-(2-aminoethyl)-L- cysteine (AEC) in a medium containing at least one assimilable carbon source, a nitrogen source and the required inorganic and growth-promoting constituents, while maintaining the pH value of the culture medium from 5-9. Microorganisms exemplified are B. flavum ATCC 21475, C. acetoglutamicum ATCC 21491, M. ammoniaphilum ATCC 21490 and M. glutamicus ATCC 21492. An AEC resistant microorganism is defined as a strain which can grow and form colonies on a minimal medium established for the microorganism supplemented with 1 mg. / ml. of AEC. HC1 and 1 mg. / ml. of L-threonine.
Patent GB-1259222-A (GB)
IPC: C25B1/36
Filed: 1969-07-22
Abstract: 1,259,222. Welding by pressure and fusion. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 June, 1970 [22 July, 1969], No. 36832/69. Heading B3R. [Also in Division C7] Uniformly distributed A1 studs 2 are each friction welded at one end 3 to a steel plate 1 and rigidly connected at the other end, e.g. by friction or fusion welding, to a plate 4 of higher electrical conductivity than the steel plate (such as A1, Cu or A1 alloy) to secure the plates in parallel relationship and provide a base plate assembly for an electrolytic cell having a flowing mercury cathode (see Division C7). To make the assembly shown in Fig. 3, the A1 studs are friction welded to steel plate 1 and abutted against A1 plate 4 having holes in register with, but of smaller diameter than, the studs 2. A1 studs 6 of the same diameter as studs 2 are spun under increasing pressure against the opposite side of plate 4 to make a friction weld 7. In a modification of this method, tapered A1 studs 24, Fig. 8, secured by friction welding to a steel plate (not shown) protrude through tapered apertures in an A1 plate 23. A1 studs 25 are spun against the protruding ends and adjacent areas of the A1 plate to produce friction welds. In a further embodiment A1 studs 8, Fig. 4, secured by welding to a steel plate 1, are passed through apertures of the same diameter in an A1 plate 4 and secured by fusion welding 9, e.g. by argon arc welding.
Patent GB-1266089-A (GB)
Inventor: BOCK W
IPC: B60Q1/14
Filed: 1970-09-10
Abstract: 1,266,089. Road traffic signals on vehicles. SWF-SPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU G.m.b.H: 10 Sept., 1970 [13 Sept., 1969], No. 43264/70. Heading G4Q. In order to dim rear flashing indicators BLh1 BLh2 and brake warning lights BrL1, BrL2 at night, a resistor W is connected into the supply line to the flasher unit BG on operation of the lights switch LSK, and the brake warning lights are connected together in parallel via brake switch BS directly to the supply lead to the flasher unit. The front flashing indicators BLv1, BLv2 are operated at full power by means of relays R1, R2.
Patent GB-1297802-A (GB)
IPC: C08K5/00
Filed: 1969-11-20
Abstract: 1297802 Hydrocarbon polymer compositions SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 20 Nov 1969 56795/69 Heading C3P Compositions comprise (1) a hydrocarbon polymer, (2) at least 10 weight per cent of talc, (3) 0À01 to 5 weight per cent of at least one antioxidant stabilizer and (4) 0À1 to 5 weight per cent of at least one non-volatile polar compound which is preferentially sorbed by the talc. The polymer may be polypropylene, poly- 4-methylpentene-1, homopolymers or copolymers of ethylene or styrene, or polypropylenes modified by block or random copolymerization of small proportions of other monomers. The talc may be fibrous, acicular, platy or micaceous. Specified antioxidants are phenols and dialkylthio dipropionates. Many suitable polar compounds are specified including epoxides, amides, acrylate polymers, aliphatic polyols, aminobenzoic acids, sulphides, aliphatic amines, esters, polyesters, ethers and polyethers. Examples describe compositions comprising polypropylene; talc; 1,3,5-trimethyl-2,4,6-tri(3,5- di - t - butyl - 4 - hydroxybenzyl) benzene and dialkyl thiodipropionates, optionally together with 4 - methyl - 2,6 - di - t - butylphenol; calcium stearate; and epichlorohydrin/bisphenol A condensates, N,N<SP>1</SP>-ethylene bisstearamide, diethanolamine/carboxylic acid condensates, mannitol, sodium benzoate/sodium dioctyl sulpho succinate mixtures, glycerine, polyethylene glycol, polymethyl methacrylate, N,N<SP>1</SP> - disalicylidene - 1,2 - propane diamide, aminobenzoic acids, bis-(dimethylthiocarbamyl) disulphide, an aliphatic polyepoxide, N,N<SP>1</SP>- di(#-hydroxyethyl)glycine, octyl epoxystearate, sucrose benzoate, stearylamine, polyethylene glycol dibenzoate, polyester, tetrakis (2-hydroxypropyl) ethylene diamine, oleamide and poly(propylene oxide/ethylene oxide).
Patent GB-1301330-A (GB)
IPC: C02F3/12
Filed: 1970-04-11
Abstract: 1301330 Treatment of effluents SIMON ENG Ltd 19 April 1971 [11 April 1970] 17327/70 Heading C1C A process for treating effluents comprises passing the effluent through an aeration tank for treatment by the activated sludge process and on to a settling tank, maintaining the dissolved oxygen level in the effluent in the aeration tank at a level sufficient to ensure oxidation of the carbonaceous impurity therein, and increasing, in a vessel of smaller capacity than that of the aeration tank the dissolved oxygen level in the effluent flowing from said aeration to the settling tank. The dissolved oxygen level may be increased from 1 to 2 p.p.m. to 7 p.p.m. in the smaller capacity vessel, this vessel preferably being equipped with a rotatable surface aerator. Such an arrangement is shown in the Figure which comprises an aeration tank 10 provided with a rotatable surface aerator 11, a subsidiary tank 12 and rotatable surface aerator 14, and a settling tank 15. An alternative to the use of the subsidiary tank, is a means for diffusing air through the effluent along a channel between the aeration and settling tanks.
Patent GB-1304229-A (GB)
IPC: F16L15/00
Filed: 1970-09-25
Abstract: 1304229 Waste fittings for baths basins etc McALPINE & CO Ltd and J E McALPINE 27 Sept 1971 45689/ 70 Heading A4N [Also in Division F2] A T-coupling 10 having aligned inlet branches 12, 13 for connection to the waste pipes of twin bowls, basins or sinks and an outlet branch 11 for connection to a discharge pipe or sealing trays, further includes a baffle or partition 16 located centrally over the outlet branch to prevent water surging from one inlet brach into the other. A gap 17 between the baffle 16 and a domed portion of the body 10 allows some of the water discharged from an inlet to cascade over the baffle thereby drawing in air from the other inlet which joins the discharge and prevents or reduces gurgling within the coupling. The coupling body 10 may be of rigid thermoplastics material having screw threaded sections of the inlet and outlet branches. The baffle or partition 16 is formed from centrally positioned depressions (14, 15) Fig. 6 (not shown), in opposite body sides, the inner ends of the depressions being joined.
Patent GB-1311473-A (GB)
Title: Desulphiding of hydrocarbons
IPC: C10G45/08
Filed: 1969-03-31
Abstract: 1311473 Desulphurisation catalyst GAS COUNCIL 12 June 1970 [31 March 1969] 16650/69 Heading B1E [Also in Division C5] A catalyst comprises 4 to 10% of molybdenum, 1 to 5% of nickel or of cobalt or of mixtures thereof, and from 1 to 5% of uranium, the percentages being by weight of the metal in the total catalyst. The catalyst may be support, supports specified being alphaalumina, gamma-alumina, silica, natural clays, alumino-silicates, molecular sieves, silicon carbide and zirconium silicate. Preferred are alpha alumina microspheres. The catalyst may be produced by impregnating the support with a solution of soluble salts of the metals which are decomposable to the respective oxides on heating and then calcining, e.g. impregnating α-alumina with aqueous citric acid solution of nickel nitrate, uranyl nitrate and ammonium paramolybdate and then calcining at 500- 550‹C for 12 hours. The Example describes an alpha-alumina, molybdenum, uranium, nickel oxide composition.
Patent GB-1312466-A (GB)
Title: Information storage unit
IPC: H04Q3/42
Filed: 1970-10-02
Abstract: 1312466 Data storage PLESSEY CO Ltd 27 Sept 1971 [2 Oct 1970] 46873/70 Heading G4C [Also in Division H4] Information (e.g. from a number generator of a communications exchange) is routed alternately to two stores A1, A2 by a control unit 17 which provides three stages of control in which (i) the information is routed to one store and then a route to the other store is set up for a subsequent information item; information once having been stored for a predetermined time at this stage cannot subsequently be lost, e.g. as a result of the arrival of subsequent information; (ii) an indication as to which of the contents of stores A1, A2 is to be processed next is given and the inputs to the stores are inhibited when both stores are occupied; (iii) the store whose contents are to be processed next is selected in dependence on the nature of the stored information, e.g. whether it originates from a subscriber's line circuit or an incoming junction supervisory relay set, and the control unit further can inhibit the progress of the information through the three control stages prior to each stage in dependence on the nature of the stored information. Lines 3, 3a from a subscriber's line and superviscry relay set are threaded through appropriate core transformers 1 arranged in digit rows R1, R3, R5. Duplicate rows R2, R4, R6 and a further pair of stores, identical to A1, A2 but not shown, are provided for use in the event of component failure. Each core 1 has an output amplifier 5 connected to the write windings of a conbination of cores 7 in stores A1, A2 so that each digit is stored, for example in two out of five code, in one of the stores as determined by control unit 17 and selector 9. The stores are selestively read out by windings 11, 12 to output circuits 16 which may include further storage, e.g. S.C.Rs, and from which the information is transferred to a register. Additional cores 1a- 1d provide indications to control unit 17 of the type of information being entered into stores A1, A2. The control unit, Fig. 2, includes an input gate G1 which is inhibited for the predetermined interval by a monostable B1 following registration of a pulse in a bi-stable B6 or B7 via G4 or G5 and monostable B2, outputs 18, 20 selecting stores A1, A2. The gates G4 and G5 are normally selected atlernately by a bi-stable B3. Input gate G1 is also inhibited by gate G3 if both stores are at control stage (i) (bi-stables B6, B7 both set) or by gate G13 or G19 if one store is at control stage (i) and the other store is being read out (monostable B10, B14) when a call arrives. A subscriber originated call enters control stage (ii) via G14, G21 provided the other store is not already at stage (ii) or has not received a call from a supervisory set, the latter being registerd by a bi-stable B11, B15. Thus an incoming junction call takes priority over a subscriber originated call and is processed first. Stage (iii) is entered via G16, G23 provided the other store is not already in that state.
Patent GB-1314730-A (GB)
Title: Process for the production of aluminium
IPC: C22B21/02
Filed: 1970-05-05
Abstract: 1314730 Producing aluminium SHOWA DENKO KK 5 May 1970 21597/70 Addition to 1198293 Heading C7D Aluminium is produced by reducing alumina with carbon in an arc furnace, first heating the charge to 2100-2500‹C. to form a molten Al-Al 4C 3  mixture (high temperature zone), alllowing the molten mixture to cool to 1900-1400‹C. to solidify the Al 4 C 3  (low temperature zone), withdrawing molten Al from the furnace for recovery, adding further alumina and C to the solidified Al 4 C 3 , and repeating at least the heating, cooling and withdrawing steps. The weight ratio of alumina to carbon in the charge is preferably 74À5À25À5 to 78:22. The charge may be a briquetted mixture of alumina and petroleum coke powder using an aqueous polyvinyl alcohol solution as binder. Contraction of the high temperature zone and concomitant constitution anew of the low temperature zone, which alternate with expansion of the high temperature zone, may be effected by a decrease in the amount of heat supplied to the zone by interruption or decrease in power supply, or regulating the voltage and/or feeding rate of the charge. The furnace may be provided with a plurality of electrodes (e.g. six) in excess of the number of phases of A. C. (e.g. three), a combination of electrodes in a number corresponding to the number of phases being supplied with power to constitute therebelow the high temperature zone, after which in turn another combination is supplied with power. Alternatively, the number of electrodes may correspond to the number of phases, all being supplied with power, and the furnace body alone tilted in alternation to constitute the alternate and successive high and low temperature zones.
Patent GB-1328499-A (GB)
Title: Dies for use with compacting presses
IPC: B22F3/03
Filed: 1969-10-14
Abstract: 1328499 Compacting press die UNITED KINGDOM ATOMIC ENERGY AUTHORITY 7 Oct 1970 [14 Oct 1969] 50520/69 Heading B5A Particles of coated fission product retaining nuclear fuel particles which have been overcoated with a deformable layer of matrix forming carbon powder, are compressed between opposed annular plungers 2, 3, actuated by platens P2, P1, within an annular cavity defined between annular inner and outer die members 4, 5, the upward movement of plunger 3 simultaneously effecting upward movement of the inner die member 4, and the downward movement of plunger 2 simultaneously effecting downward movement of outer die 5 (by abutment with platen P2) until a flange 11a of a member 11, which is resiliently urged against the die 5 by a spring 10, abuts a member 7 thereby also to prevent further movement of the platens P2, P1 and plungers 2, 3 towards each other.
Patent GB-1339548-A (GB)
Title: Video mappers
IPC: G01S7/40
Filed: 1970-10-22
Abstract: 1339548 Video mapper SOLARTRON ELECTRONIC GROUP Ltd 12 Oct 1971 [22 Oct 1970] 50325/70 Heading H4F In a flying spot scanner inaccuracies in the map plate drive means, e.g. lead screws 18 and 20, Fig. 1, can cause a position indication produced by the drive means, e.g. digital pick off 22, 26 and 24, 26, not to be in aggreement with the true plate position. The invention thus seeks to calibrate and compensate for these errors wherein a test plate 10 carrying reference points 12 at known positions is substituted for the map plate and is driven such that each mark is visually positioned in turn, and the centre of the scan and the position co-ordinates produced by the digitizers compared, in subtractors 42, 22, with the actual position co-ordinates as stored at 46 and read out by sequential actuation of gates 48. The position errors are sequential stored at 52. When the map plate is replaced and a required position thereof produced by 68, the nearest reference point positioning to this required position is determined by sequentially reading out the contents of store 46 under the control of sequenced gate 78, converting each X, Y co-ordinate into a search area (XŒ#X) by (YŒ#Y) by means of adders and subtracts 80/86, and comparing the required position coordinates therewith at 88/94. AND gate 96 is enabled when the required position falls within the search area. The sequencer 76 controlling gate 78 is then stopped and the corresponding errors read out from store 52 for correctors at 70, 72 of the desired position co-ordinates.
Patent GB-1341558-A (GB)
IPC: F04B33/00
Filed: 1970-07-22
Abstract: 1341558 Vacuum pump N D McCULLOCH 21 June 1971 [22 July 1970] 35479/70 Heading F1N A vacuum pump for evacuating produce containing bags comprises inner and outer telescoped cylinders 2, 3 closed by valved end pieces 5, 9 to define a pumping chamber 14 therebetween. In use a bag is sealingly held around the outer cylinder 2 whereafter partial withdrawal of the cylinder 3 draws air from the bag through a perforation in a further end piece 4 and the valve in the end piece 5 into the chamber 14. Air sucked into the chamber 14 is prevented from reentering the bag during the return stroke by the flap valve 7, a flap valve 9 allowing exhaustion of the chamber.