baber/WOPTO huggingface dataset:
Patent GB-470846-A (GB)
Title: Improvements in apparatus for the remote detection or location of sources of radiantenergy
IPC: B63B51/00
Filed: 1935-12-21
Abstract: 470,846. Infra-red ray detectors. WOOD, R., MOSLEY, L., and DUNKLEY, H. Dec. 21, 1935, No. 35440. [Class 40 (iii)] [Also in Group XXXVI] An infra-red ray detector comprises a pair of thermo - electric current generators of minute mass, on to one of which rays from a distant radiator are focused by means of a parabolic mirror and /or lens, while the other is completely shielded from such rays by being mounted in a shielding enclosure, the currents generated by the two thermo - electric devices being normally balanced so as to compensate for ambient and background temperature effects and means being provided for detecting thermo-electric current generated when infra-red rays are focused on the unshielded generator. The device comprises a casing 1 having a hinged front shutter 2 and rotatably mounted upon a vertical pillar 6 which is itself rotatable about a vertical axis, being supported in a pedestal bearing 9 and provided with a hand wheel 10. Pointers and scales are provided for indicating the angular position of the casing. Within the casing there is secured a parabolic reflector 13 at the focus of which is arranged a thermocouple 14, while a second thermo-couple 15, also provided in the casing, is surrounded by a shield 16 formed with openings so as to expose the thermo-couple to the ambient temperature. The thermo-couples are reversely connected in the adjacent arms of a Wheatstone bridge network, the two opposite arms of which are formed by a potentiometer with a sliding contact. The current from the thermo-couples is taken from a diagonal of the network to a low-frequency valve amplifier, the current to the amplifier being rendered intermittent either by means of a commutator or by an electromagnetically-operated make-and-break in the circuit. The thermo-couple 15 serves to compensate for changes in the ambient temperature, but when infra-red rays from an obstacle such as an aircraft, iceberg or other object fall on the thermo-couple 14, a current is obtained in the output circuit of the amplifier which operates a telephone receiver, current meter or a lamp, bell or other indicator. The direction of the obstacle can be found by the use of one instrument and its position can be located when more are employed. To improve the range of the apparatus, the thermo-couples may be replaced by thermopiles or the absorption of a thermo-couple increased by blackening it. Fluorspar or rock salt lenses may be used for focusing the infra-red rays in addition to or in place of the reflector 13 and the directional effects of the detector may be enhanced by locating the thermo-couples at the end of a tube of length chosen in accordance with the accuracy required. The thermo-couple is preferably formed by beating a strip of Eureka wire to a thinness of less than <1>/500 mm. and copper plating the strip. Specifications 5887/13 and 147,482, [both in Class 97 (iii)], are referred to.
Patent GB-622847-A (GB)
Title: Improvements relating to circuits for providing stepped-up d.c. voltage
IPC: H02M7/10
Filed: 1946-11-29
Abstract: 622,847. Rectifying. RADIO CORPORATION OF AMERICA. Nov. 29, 1946, No. 35526. Convention date, Nov. 29, 1945. [Class 38 (ii)] A rectifying and voltage multiplying system such as may be used to produce high voltage D.C. from voltage pulses appearing across a cathode-ray beam deflection transformer during fly-back, comprises a number of stages each of a diode V<SP>1</SP>, V<SP>2</SP>, V<SP>3</SP> in series with a capacitor C<SP>1</SP>, C<SP>11</SP>, C<SP>111</SP>, an inductance L<SP>2</SP>, L<SP>4</SP> being connected in parallel with a capacitor C<SP>2</SP>, C<SP>4</SP> across each stage except the first, the capacitors C<SP>1</SP>, C<SP>11</SP>, C<SP>111</SP> being connected in series so that the voltages across them add. -The input voltage is shown as the sum E<SP>1</SP>+E<SP>2</SP> of the voltage impulses produced across the primary and secondary of transformer T, the output of n stages being nK(E<SP>1</SP>+E<SP>2</SP>), where K is the attenuation factor. The resonant frequency of parallel capacitor-inductance circuits L<SP>2</SP> C<SP>2</SP>, L<SP>4</SP> C<SP>4</SP> is equal to the frequency of the imput A.C. or to a frequency, half a period of which is equal to the duration of an input pulse. These circuits effectively connect the diodes in series to the load for D.C. and also act as energy storage devices for smoothing the D.C. output. The stages are connected to the preceding or to the transformer through series capacitorinductance connections, also resonant to the effective pulse frequency, and offer no im. pedance to the pulses. A resistance R<SP>1</SP> across capacitor C<SP>1</SP> completes the D.C. path. It is stated that the characteristic impedance of the network is so increased that proportion of each deflection cycle required for flyback is decreased. The circuit is suitable for use with R.F. input as well as pulse input. Specification 613,053 is referred to.
Patent GB-745504-A (GB)
Title: Method of purifying concentrates containing vitamins of the b group
IPC: A61K31/00
Filed: 1953-12-21
Abstract: Vitamin B12 concentrates are purified by extracting said concentrates with a solution of m- and/or p-halogenated phenols in a hydrocarbon or halogenated hydrocarbon solvent or in carbon disulphide or in a mixture of these solvents.  In the case of aqueous concentrates the extracting solution contains 6-10 per cent of halogenated phenols. Further purification is effected by adding a small quantity of an oxygen-containing polar substance, whereby the solubility of the vitamins of the B12 group in the solvent is depressed or completely eliminated, thus enabling said vitamins to be extracted from the organic solvent in turn by adding water either prior to or subsequent to the addition of the oxygen containing polar substance.  Vitamins of the B12 group are obtained from the concentrate thus obtained by precipitating said vitamins in the form of a phenolic complex by adding to said concentrates a small quantity of a phenol or of a derivative thereof containing one or more nuclear substituents alkyl, aryl and halogen, and decomposing the resulting precipitate with an alcohol.  Separation of the precipitate is aided by the use of a filter aid, e.g. kieselguhr or cellulose powder.
Patent GB-177226-A (GB)
Title: Improvements relating to the delivery of ammunition charges from ships' magazines orlike places
IPC: F42B39/14
Filed: 1920-12-17
Abstract: 177,226. Luck, R. J. Dec. 17, 1920. Magazines. - A flashproof double-door device for delivering ammunition from the inside of a ship's magazine to the outside comprises a box 1 attached to the bulkhead 2 and having an inner or receiving door 3, and an outer or delivery door 4 to which is linked a pivoted counterweighted tray 6. The doors are connected so that when one door is open the other is shut and retained against movement, the closing of the inner door releasing the outer door, which is opened by the counterweighted tray while the weight of the charge falling on the tray automatically closes the outer door and frees the inner door. For this purpose, brackets 12 on the doors carry pins 13 which engage slots 15 in a vertically sliding plate 14, the doors being free to open and close when the slots are concentric with the door hinges. When, for example, the door 3 closes, its pin 13 passes into an end eccentric portion 15<a> of the slot 15, moves the plates 14 downward, and brings the slot 15 of the other door into concentric position to permit this door to open. In a similar manner, the closing of the door 4 causes the plate 14 to rise and release the door 3. Ammunition is first placed on the inclined bars 5 of the door 3 so that, when this door is closed, the door 4 is automatically opened by counterweighted levers 11, 8, 9, 10, and the ammunition rolls on to the tray 6 carried by the lever 11. Under the weight of the ammunition, the tray return to the full line position, closing the door 4 and allowing the door 3 to open and receive another charge.
Patent GB-1499628-A (GB)
Title: Heather yarns
IPC: D02J1/00
Filed: 1976-08-27
Abstract: 1499628 Forming composite yarns E I DU PONT DE NEMOURS & CO 27 Aug 1976 [29 Aug 1975] 35742/76 Headings D1F and D1W Heather e.g. pile fabric, yarn made of bulked continuous filament yarns having different colour and/or dye receptivity is produced by subjecting two or more component yarns having a total denier of 400 or more to a tension of 0.5-1.25 grms per denier in order to straighten-out the crimp therein (but without attenuation of the yarn material) and thereby disentangle and parallelize the filaments; the yarns (thus freed of entanglements and, optionally, wetted with water) are then fed through a fluid-jet entangling zone wherein they are randomly entangled and combined: the resultant heather yarn is withdrawn from the zone at a slower rate (4-30% overfeed) than the feed rate thereto so that the yarns are free of tension during intermingling. The initial (polyamide or polyester) yarns are previously crimped (bulked) e.g. by intermeshing gears, stuffer-box, hot-jet or by differential shrinkage between the elements of bicomponent filaments thereof, and are "twistless". As shown in Fig. 1, crimped component yarns 8, 10 and 12 supplied from bobbins 2. 4 and 6 converge through a guide 11 and are tensioned by repeated passage around draw rollers 14 and 18 and associated separator rolls 16 and 20 the disentangling action of which being augmented by use of snubbing pins 24. The yarns pass through water sprays emanating from nozzles 26, through a fluid jet 28 for intermingling (without twist) the filaments thereof and the final yarn 29 is withdrawn by wind-up roll 30. The jet, Fig. 2. comprises a body 31 traversed by yarn and fluid passageways 32 and 34, the former partially covered on the entry side by a yarn gate 36 having a smooth and a curved surface 38 to support and guide the yarns.
Patent GB-1067237-A (GB)
Title: Improvements in or relating to frequency multiplier arrangements
Inventor: VOLZ HORST
IPC: H03B19/00
Filed: 1964-09-01
Abstract: 1,067,237. Pulse frequency multiplying circuits. DEUTSCHE AKADEMIE DER WISSENSCHAFTEN ZU BERLIN. Sept. 1, 1964, No. 35746/64. Headings H3P and H3T. In a circuit for doubling the frequency of a rectangular waveform signal, the signal is displaced in phase by 90 degrees by integrating and amplifying, a rectangular waveform signal of double frequency being obtained from the phase displaced signals by means of a logic circuit. As shown, a rectangular waveform is integrated at 10, 11, the resulting triangular waveform being amplified at 12 and clipped at 14 so as to provide a rectangular wave displaced in phase by 90 degrees. Positive and negative half-cycles of the respective waves are fed by diodes 9 to a phase-splitter 7, the two outputs of which are combined by diodes 8 to provide a double frequency component. In Fig. 4 (not shown) an inverted version of the input signal is also fed to the logic circuit. A plurality of such frequency doublers may be connected in cascade.
Patent GB-1353225-A (GB)
Title: Process for oxidising cyclohexane
IPC: C07C409/14
Filed: 1971-07-29
Abstract: 1353225 Oxidation of cyclohexane E I DU PONT DE NEMOURS & CO 29 July 1971 [31 July 1970] 35750/71 Heading C2C The invention comprises a process for oxidation of cyclohexane to provide a liquid product containing cyclohexane, cyclohexanol, cyclohexanone and cyclohexyl hydroperoxide by passing a stream of liquid cyclohexane containing dissolved therein 0À1-5 p.p.m. of a soluble cobalt oxidation catalyst downwardly through a zoned reactor 22 (supplied from 24) in countercurrent contact with an upwardly flowing gas stream containing molecular oxygen (supplied at 42), wherein the liquid passes initially through at least one oxygen clean-up zone at 130-180‹ C./60-350 p.s.i.g. in which the molecular O 2  content is reduced to a level below that at which the subsequent removal of cyclohexane vapour produces an explosive mixture, and the liquid then passes through a series of oxidizing zones at 140-170‹ C./60- 350 p.s.i.g. wherein the molecular O 2  content is maintained in excess of the stoichiometric amount required by introduction of additional amounts of said molecular O 2  containing gas into each of said zones, the overall amount of molecular oxygen consumed in the oxidizing zones being not more than 95% of the total amount fed to the reactor, The liquid stream is withdrawn from the reactor from below the lowest oxidizing zone (via line 44), the amount of cyclohexylhydroperoxide in the product being at least 15% wt. based on the combined weight of cyclohexanol, cyclohexanone and cyclohexylhydroperoxide. In the illustrated apparatus zones are formed by the introduction of perforated trays 1-21, regions 26-41 are preferably oxidizing zones to which oxidizing gas may be admitted and off gas from 25 may be recycled to 42 to provide mild oxidizing conditions and strip cyclohexane from the product. Cobalt naphthenate is a specified catalyst.
Patent GB-965984-A (GB)
Title: Improvements relating to end-winding support devices for electrical machines
IPC: H02K3/50
Filed: 1962-09-20
Abstract: 965,984. Securing coils for dynamo-electric machines. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. Sept. 20, 1962 [Sept. 25, 1961], No. 35850/62. Heading H2A. An end-winding support device 1 for an electrical machine, e.g. a motor, comprises an annular member 2 from whose inner and outer peripheries extend a plurality of arms 3, 4, capable at least partially of embracing the end winding 12 to secure the member to the latter. The device may be of either magnetic or non- magnetic metal, e.g. punched sheet metal or wire, and covered with a surface layer of deformable, e.g. electrically insulating, material. The arms may be resilient and preshaped to the winding contour, or corrugated, or extended to form partial closures of the winding slots, or fastened together by e.g. hook and eye connections.
Patent GB-1138126-A (GB)
Title: Solution dimerization
Inventor: CIER HARRY EVANS
IPC: C07C2/50
Filed: 1967-08-04
Abstract: 1,138,126. Dimerization. ESSO RESEARCH & ENG. CO. 4 Aug., 1967, No. 35868/67. Heading C5E. C 4-6  conjugated dienes are dimerized, or are co-dimerized with an ethylenically unsaturated compound, by a continuous process in which the feed is introduced into a gas-liquid reaction zone maintained at conditions of temperature and pressure such that the diene is gaseous within the zone, an inert liquid solvent being passed countercurrent to the feed, and the desired dimer being recovered as a solution in said solvent, from which it may be separated. Suitable reaction zones are gas absorption towers and distillation columns. The solvent preferably boils at least 15‹ F. above the b.p. of the desired dimer to facilitate separation, a paraffinic wash oil of b.p. 420‹ F. being mentioned. The process is illustrated by the dimerization of butadiene to vinyl cyclohexene (plus some 1,5-cyclooctadiene), and the codimerization of butadiene and ethylene to cyclohexene. Other monomers mentioned are the dienes piperylene, isoprene and cyclopentadiene, and the ethylenic compounds propylene and maleic anhydride.
Patent GB-1142735-A (GB)
Title: Process for electrodepositing metal on semiconductors
IPC: H01L21/288
Filed: 1967-08-04
Abstract: 1,142,735. Electro-depositing metals on semi-conductors. CSF-COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Aug. 4, 1967 [Aug. 12, 1966], No. 35889/67. Heading C7B. A metal, e.g. Cu, Zn, Ni or Pt, is deposited on a semi-conductor body e. g. a Si plate by immersing the body as a cathode in an electrolytic bath comprising an aqueous acid solution, e. g. of HF with a pH of 3, which dissolves oxide coating of the semi-conductor and inhibits reoxidation by the liberation of hydrogen, and then adding to the solution ions of the metal to be deposited, preferably in the form of a salt of the metal in a further acid solution. Thus Cu may be deposited by adding a solution containing 25 g/1 CuCl 2 , 195g/l NaCl and 25 g/l HCl. Surfaces of the semiconductor not to be covered with metal may be protected with a 1 micron thick SiO 2  layer.
Patent GB-1496256-A (GB)
Title: Halogenation of metal phthalocyanines
IPC: C09B47/10
Filed: 1975-09-01
Abstract: 1496256 Preparing polyhalogeno metal phthalocyanines IMPERIAL CHEMICAL INDUSTRIES Ltd 6 Aug 1976 [1 Sept 1975 10 Nov 1975] 35947/75 and 46359/75 Heading C4P Polyhalogeno metal phthalocyanines are prepared by adding chlorine and/or bromine to a metal, e.g. Cu, phthalocyanine in titanium chloride medium containing aluminium chloride. The reaction takes place at 60-170‹ C, under atmospheric or super-atmospheric pressure. The titanium tetrachloride is used in amounts of 0À5 to 20 times the weight of metal phthalocyanine. Halides or oxyhalides of sulphur or phosphorus may be present in amounts up to 15 times the weight of aluminium chloride and the total weight of halides or oxyhalides and aluminium chloride is from 0À16 to 34 times the weight of metal phthalocyanine. A catalyst, e.g. iodine, sulphur, SbS 3  or SbCl 3  or SbCl 5  may be present. Bromination precedes chlorination in the preparation of polychlorobromo-compounds, and the titanium tetrachloride may be recovered by distillation.
Patent GB-1241038-A (GB)
Title: Polyurethanes
IPC: C08G18/38
Filed: 1968-07-29
Abstract: 1,241,038. Polyurethanes. SCHERING A.G. 29 July, 1968 [29 July, 1967], No. 36045/68. Headings C3C and C3R. Polyurethanes are prepared by reacting (a) an alkanolamide containing free hydroxyl groups, that has been obtained by the condensation of (i) a polymerized fatty acid or an ester thereof with (ii) a dialkanolamino in a molar ratio of (i) to (ii) of from 1: 2 to 1: 4, the alkanolamide not being freed by washing from the by-products formed during its preparation and (b) a polyisocyanate. Cellular materials are formed by including a blowing agent and optionally emulsifiers, foam stabilizers and catalysts in the reaction mixture. Conventional polyols, for example, N,N,N<SP>1</SP>,N<SP>1</SP> - tetrakis - (2- hydroxypropyl) - ethylene diamine, polyethers and dimeric fatty acids - bis - monoalkanolamides may also be included in the reaction mixture. In examples the alkanolamides are prepared from commercial dimeric tall oil fatty acid containing varying proportions of monomeric, dimeric, trimeric and higher polymeric fatty acids and diethanolamine. Conventional polyisocyanates, especially aromatic diisocyanates may be reacted with the alkanolamides. Reference has been directed by the Comptroller to Specification 1,032,873.
Patent GB-448943-A (GB)
Title: Improved process and apparatus for the mass production of nails and similar articles
IPC: B21G3/24
Filed: 1934-12-17
Abstract: 448,943. Nail - making machines. MILLINGUE, L., 34, Rue de la Republique, Puteaux, Seine, France. Dec. 17, 1934, No. 36182. [Class 83 (iv)] A nail-making plant involves the use of two separate machines 2, 4 driven in positive synchronism with one another as by the use of a common driving shaft 6. Wire of square cross-section is fed from a drum 1 to the machine 2 which comprises a four-jaw press for producing the preliminary shaping of the work to the form shown in Fig. 2. The part 3a remains unreduced for forming the head and the part 3b is reduced for forming the shank. The finished nail is shown in Fig. 3 and the strip material 3 is passed continuously from the machine 2 to the machine 4 by a feeding device 5. The machine 4 severs and upsets and may operate for severing as indicated diagrammatically in Figs. 4, 6 and 8 the knives 13, 14 forming stops for limiting the forward movement of the strips. After severing, the knives separate as in Fig. 8 and an upsetting tool 15 comes into operation. The chain of blanks is gripped by spring jaws 9, 9<a> which reciprocate as shown by the arrows in Fig. 4, jaws 11, 12 holding the work in position to allow of the feed.
Patent GB-976124-A (GB)
Title: Improvements in compressor or turbine guide vanes
Inventor: BOURQUE THEODORE EDMOND
IPC: F01D5/18
Filed: 1962-09-24
Abstract: 976,124. Turbine and compressor blades. GENERAL ELECTRIC CO. Sept. 24, 1962, No. 36226/62. Heading F1T. A hollow compressor or turbine guide vane has a longitudinally extending cavity divided by an elongated member into leading and trailing edge regions, the elongated member having a portion of reduced cross-sectional area adjacent to or at its radially inner end to form a passage inter-connecting the two regions, and bleed apertures being provided in the concave wall of the trailing cavity region for exhausting heating or cooling fluid introduced into the radially outer end of the leading cavity region. A hollow guide vane 30 has leading and trailing edge regions 52, 53 formed by a hollow elongated member 51 contiguous with the side walls 54, 55 and having a reduced portion 56 defining a fluid passageway connecting the regions 52, 53. The vane 30 is supplied with heating or cooling fluid from a duct 3 in the casing 2 through an aperture 41, the fluid exhausting through apertures 35 to 38 in the concave side wall 33.
Patent GB-1465098-A (GB)
Title: Electrical connector
IPC: H01R13/703
Filed: 1974-08-19
Abstract: 1465098 Two-part couplings WALTER PREH GmbH 19 Aug 1974 [18 Aug 1973] 36467/74 Heading H2E A switching socket for mating with a plug comprises contacts 2, 3 disposed in housing 1. Separate contacts with solder eyes 8 are mounted in a recessed member 11 disposed on the housing. Insertion of the plug displaces the member which itself displaces one of the contacts therein thus altering the switching state of these contacts.
Patent GB-1111304-A (GB)
Title: Improved torque motor
IPC: F15B13/043
Filed: 1965-12-23
Abstract: 1,111,304. Electromagnets. WEATHERHEAD CO. 23 Dec., 1965 [15 March, 1965; 1 Dec., 1965], No. 36542/66. Divided out of 1,111,303. Heading H1P. [Also in Division G3] A torque motor comprises side plates 101, 102 separated by spacer blocks 103, 104 and U-shaped block 106 in which armature 120 is pivoted by pin 121. The side plates are spaced apart by permanent bar magnets 116, 117 (Fig. 4, not shown) normal thereto which are polarized along the edges adjacent the side plates so that the latter are of opposed magnetic polarities. A solenoid coil 123 surrounds the armature within the side plates and permanent magnets, and below the spacer blocks with connection to terminal block (Fig. 4, not shown) carrying further connections over cable 131 emerging through loss and gland 136 retaining rubber bush 134. U-shaped pole pieces 138, 139 are screwed to side plates 101, 102 to define a gap permitting lateral movement of the free end of the armature between spring loaded screwadjusted plungers 146, 147. The pole pieces are normally magnetized in opposition, and excitation of coil 123 polarizes the free end of the armature in a sense dependent on the current direction, so that deflection is substantially linearly proportional to the current, and controls a hydraulic pilot valve 78 over rod 76 to operate a main valve 40 in accordance with the magnitude and sense of the energization current, with mechanical feedback to the armature over rod 160, coil spring 166, and button 163 as described in Specification 1,111,303. Manual, hydraulic, or pneumatic over-rides are applicable to the armature.