baber/WOPTO huggingface dataset:
Patent GB-265652-A (GB)
Title: Improvements in or relating to current rectifiers
IPC: H01L21/16
Filed: 1925-10-09
Abstract: 265,652. Levy, L. Oct. 9, 1925. Static contact rectifiers, arrangements of.-A rectify. ing device comprises a contact between aluminium and a sulphide, such as cuprous sulphide, enclosed in a sulphuretting atmosphere to prevent oxidation of the aluminium. In the construction shown in Fig. 1 a copper cup 1 is closed by a " bakelite " or like insulating disc 3 with an air-tight packing ring 10. A plate 6 of aluminium, which should be carefully polished before insertion, is arranged beneath the disc 3 and the cup 1 is filled with a paste 7 of a cuprous sulphide, preferably formed by the direct action of sulphur on copper, and a sulphuretting liquid such as hydro. sulphide of ammonia. Several arrangements of such devices in electric circuits are described. That shown in Fig. 3 is designed for producing high and low tension rectified currents from an alternating current. A transformer 12 has two secondaries 14, 16. The secondary 14 gives low tension current and has a central tapping 15 which is connected to one terminal A of a filtering device A - - D. The other terminal B of the filtering device is connected to the two ends of the secondary 14 through rectifiers 17, 18, a condenser 19 being placed across the filtering device. One end of the. high-tension secondary 16 is connected through rectifiers 20, 21 to the terminals E, F of a second filtering device F - - H. Across the terminals E, F are connected two condensers 22, 3 between which is connected the other end of the secondary 16. An arrangement of several secondaries connected like 16 in series in also described.
Patent GB-151597-A (GB)
Title: An improved process for the manufacture of a mixed manure containing a variable amount of nitrogen and phosphate
IPC: C05C1/02
Filed: 1920-09-02
Abstract: A manure containing variable amounts of nitrogen and phosphate is prepared by treating a solution of free cyanamide with an acid to convert it into urea or salts thereof, and then with an insoluble phosphate, such as tricalcium phosphate, bone ash, basic slag, or natural phosphate, which is rendered soluble by the acid.  By evaporation there is obtained a mixture containing urea or salts thereof, soluble calcium phosphate and other calcium salts. According to an example calcium cyanamide in aqueous suspension is treated with carbon dioxide, filtered, sulphuric acid added, and the liquid heated to 70 DEG  C.; bone ash or other insoluble phosphate is then added and the whole evaporated to dryness.  Calcium cyanamide may also be decomposed by sulphuric acid and the phosphate added without previous filtration.  The Specification as open to inspection under Sect. 91 (3) (a) refers also to the isolation of urea as by-product.  This subject-matter does not appear in the Specification as accepted.ALSO:A manure containing variable amounts of nitrogen and phosphate is prepared by treating a solution of free cyanamide with an acid to convert it into urea or salts thereof, and then with an insoluble phosphate, such as tri-calcium phosphate, bone ash, basic slag or natural phosphate, which is rendered soluble by the acid.  By evaporation there is obtained a mixture containing urea or salts thereof, soluble calcium phosphate and other calcium salts.
Patent GB-1378839-A (GB)
Title: Isothiourea derivatives
IPC: C07C335/32
Filed: 1973-05-29
Abstract: 1378839 Isothioureas RHONE-POULENC SA 29 May 1973 [30 May 1972] 25390/73 Heading C2C [Also in Division A5] The invention comprises isothiourea derivatives of the formula wherein R is a C 1  to C 4  alkyl, R 1 , R 2 , R 3  and R 4  are H, C 1  to C 4  alkyl, or C 2  to C 4  alkenyl or alkynyl, and R 5  is H, C 1  to C 4  alkyl, C 2  to C 4  alkenyl or alkynyl or phenyl optionally substituted by one to five substituents selected from halogen or C 1  to C 4  alkyl or alkoxy radicals. They may be obtained by reacting a halogenated amide of the formula with a phenylthiourea of the formula Examples are given for the production of the compounds. They are useful as fungicides.
Patent GB-580238-A (GB)
Title: Improvements in or relating to welding
IPC: B23K9/08
Filed: 1944-12-19
Abstract: 580,238. Uniting by fusion. JOHNSON- & PHILLIPS, Ltd., and OWEN, L. WYNNE-. Dec. 19, 1944, No. 25464. [Class 83 (iv)] In welding overhead or vertical seams a magnetic field is generated in the region of the weld to attract the weld'metal into the seam and/or attract the welding electrode towards the workpiece to relieve the operator of strain. Means for generating the field comprise an electromagnet having a laminated core 1 with coils 2 wound continuously over its length to produce a magnetic field with its axis through the breadth of the core, along the line I-I. The longitudinal edge of the core is covered by a copper shield 5 having a V- shaped ridge to fit the space between the plates 3 being welded. This shield is attached to side plates 7 which may be' of wood, or metal, the latter completing the magnetic circuit. The upper ends 7a are bent inwards to enclose the top of the magnet and provide a support for the handle 13. A protective layer 14 is included between the core and the bent in portion 7a of the side plates which are secured to the core by four bolts 8 having spacing sleeves 9. The magnet is placed on one side of the plate above the prepared seam with the apex of the shield 5 located in the V-slot prepared for weld metal. Welding is first carried out on the side opposite to that to which the magnet is affixed and then on the magnet side after the latter is removed. The shield will not adhere to the weld metal and therefore allows the magnet to be easily removed. A terminal block is mounted at one end between the side plates which may have rollers 12 affixed at each side at either end to transport the magnet along the weld seam. The coils may be in series with the arc supply so that the field is only generated during actual welding.
Patent GB-890848-A (GB)
Title: Improvements in or relating to electric power measuring devices
IPC: G01R21/00
Filed: 1959-07-24
Abstract: 890,848. Power measurement. COMPAGNIE INDUSTRIELLE DES TELEPHONES. July 24, 1959 [Aug. 1, 1958], No. 25493/59. Class 37. In a device for measuring the power absorbed by a load having a power factor cos y, and wherein the amplitude V of the applied voltage varies by up to Œ 20%; two ring modulators M1, M2 are fed by a current proportional to the current, i=I cos (wt - gamma), through the load; their control circuits are fed by respective voltages v1, v2 proportional to sin (wt - alpha) and sin (wt+alpha), the factor of proportionality being dependent upon alpha where tan a is proportional to V; and their output circuits are connected by way of low-pass filters 5, 6, passing only the direct modulation components which are proportional to I sin (gamma+alpha) and I sin (gamma - alpha), to a mixer; a direct current proportional to I cos gamma sin alpha, and hence proportional to the power absorbed by the load since sin alpha is substantially proportional to V, being derived from the mixer and fed to a measuring device 8. The voltages v1, v2 are respectively derived from two circuits, each fed with the same voltage V cos wt as is applied to the load, the one circuit comprising a passive limiter 1 and a filter 2 whereby a constant amplitude voltage Vo sin wt is produced, the other circuit comprising an alternating network 3 producing a voltage kV cos wt where kV is less than Vo. The two voltages Vo sin wt and kV cos wt are fed to pairs of opposite terminals of an eight-terminal differential network 4 whereby the sum and difference voltages, respectively equal to v2 and v1, are derived and fed to the control circuits of modulators M1, M2. The direct components, I sin (y - alpha) and I sin (gamma+alpha), of the modulator output currents are fed by way of filters 5, 6 to opposite diagonals of a bridge 7 having equal branches, in one of which the measuring instrument 8 is inserted to provide the required power measurement.
Patent GB-1480246-A (GB)
Title: Tape readers
IPC: G06K13/28
Filed: 1974-06-08
Abstract: 1480246 Perforated tape reader TELEVISION RESEARCH Ltd 9 June 1975 [8 June 1974] 25525/74 Heading G4M A reader for perforated tapes has a motor 3 driving a shaft 5 mounted in a support 4. The shaft drives a sprocket 6 and a toothed wheel 9. Pivotally mounted on a frame 1 of the reader is a cover 10 having an arcuate conducting surface 14 surrounding the sprocket 6. A support 7 is mounted on the shaft for rotation relative to the sprocket 6 and wheel 9. Support 7 carries a contact 4 spring loaded to engage the conductive surface of cover 10 through perforations in the tape. Support 10 has a leaf spring 20 engaging the teeth on wheel 9 to rotate with the wheel as the tape is advanced. A pin 23 on base 1 releases the spring 20 after a predetermined amount of rotation has taken place and a spring 22 returns the support to the rest position. The contact is arranged to travel over the predetermined rotation with a perforation in the tape and then to return to sense the next perforation position. Cover 10 and support 7 may carry an optical source and senser instead of a mechanical sensor.
Patent GB-260244-A (GB)
Title: Improvements in or relating to accumulators
IPC: H01M4/68
Filed: 1926-10-13
Abstract: 260,244. Sieg, E. Oct. 22, 1925, [Convention date]. Electrodes; supports for electrodes.-The soft lead electrodes of storage batteries are. suspended bv hooks or lugs made of hard lead such as an alloy of lead; and antimony containing from 5 to 11 per cent of antimony.
Patent GB-440577-A (GB)
Title: Improvements in or relating to optical systems
IPC: G03B41/04
Filed: 1934-09-05
Abstract: 440,577. Optical systems. BAIRD, J. L., and BAIRD TELEVISION, Ltd., 58, Victoria Street, Westminster. Sept. 5, 1934, No. 25551. [Class 97 (i)] A condenser lens system for a kinematograph projector comprises a first lens 3 which forms an image of the light source 1 in the plane of a second lens 4 ; the lens 4 forms an image of the lens 3 in a plane 5 adjacent a third lens 6 and the lens 6 forms an image of the image 5 on the projector lens or lenses 7. The film-gate 8 is in proximity to the lens 6 and between this lens and the lens 7. Where the lens 7 comprises relatively movable parts, as in Specification 432,635, the image formed by the lens 6 is of such an area as to cover the whole of the lens 7 in all of the positions of its parts. The light source 1 is provided with a condensing reflector 2. Specification 439,434 also is referred to.
Patent GB-257434-A (GB)
Title: Improvements relating to the manufacture of hydrogen
IPC: C01B3/06
Filed: 1925-10-14
Abstract: 257,434. Beaumont, J. H., (Metal Research Corporation). Oct. 14, 1925. Hydrogen.-In a process for the production of hydrogen, ferrous oxide is reduced by producer gas to pyrophoric iron at a, temperature below 600‹ C. in the upper of two chambers, and the iron obtained treated with steam, at a temperature below 700‹ C. to prevent formation of the magnetic oxide, in the lower chamber, the hydrogen produced being collected. The ferrous oxide produced may be re-used to obtain more hydrogen. The process is preferably continuousely operated. The reduction of the ferrous oxide is preferably carried out between 400-550‹ C., and the oxidation of the iron with steam between 500-650‹ C. The temperatures in the chambers may be controlled by hand-operated means.
Patent GB-1222969-A (GB)
Title: Plating process
Inventor: STRICKLAND GORDON ROBERT
IPC: C25D5/34
Filed: 1967-06-03
Abstract: 1,222,969. Successive electroless and electrolytic plating from the same bath. GEIGY (U.K) Ltd. May 31, 1968 [June 3, 1967], No. 25708/67. Headings C7B and C7F. Metal is deposited on to a substrate which is substantially free from grease and other contaminating material by immersing the substrate in an aqueous bath containing per litre 0.002 to 0.6 moles of a source of metal ions, 0.0015 to 6 moles of a complexing agent for said metal ions, and 0.002 to 2.5 moles of a reducing agent to effect electroless plating and thereafter while still immersed in the same bath effecting electroplating on to the substrate. Preferably the plating solution is agitated during the electroless plating stage which lasts for 10 to 40 minutes to produce a metal film of sufficient thickness to carry the electro-plating current without damage to the film and the specified range of proportions of the metal ions and of the reducing agent is maintained by periodic additions. The substrate may be a metal such as copper, nickel, steel, brass chromium, tin or silver or a non-metallic material such as glass, ceramic or a synthetic resin such as an epoxy, amide, vinyl, styrene, ethylene, propylene or acrylic polymer, which material is treated successively with acid solutions of stannous chloride and an acid noble metal salt e.g. palladium chloride before immersion in the plating bath. Preferably the metal complexing agent is in excess of that required to complex all the metal in the solution. Specified types of complexing agents are aminocarboxylic or polyaminopolycarboxylic acid or their alkali metal salts or alkylene or polyalkylene polyamines, while specified reducing agents are formaldehyde, alkali metal hypophosphites, alkali metal borohydrides or aminoboranes. In examples the substrate is stainless steel or sensitized activated ABS resin and the plating metal is copper or nickel. Reference is made to the subsequent electro-plating of copper with nickel or chromium. Preferred baths for copper contain copper sulphate, disodium EDTA, sodium hydroxide and formaldehyde together with either sodium cyanide and optionally thiourea, used at pH 12À1 to 12.7 and 23‹C., or with sodium cyanide or carbonate and mercaptobenzthiazole used at pH 11.8 to 12.4 at 50‹C., while for nickel the baths contain nickel chloride, disodium EDTA, sodium hypophosphite and lead chloride, used at pH 4.5 and 70 or 85‹ C. Reference is made to including arsenic in the nickel baths e.g. added as arsenate ions or arsenic pentoxide. To avoid electroless deposition on the anodes, which preferably are of the metal to be deposited, during the initial electroless step either the anodes are removed from the bath or they are made slightly anodic relative to inert cathodes. Reference is made to applying the invention to the deposition of silver, gold, cobalt, platinum or palladium.
Patent GB-897722-A (GB)
Title: Improvements in or relating to methods of producing aromatic sulphones
IPC: C07C317/14
Filed: 1958-08-11
Abstract: Aromatic sulphones are produced by heating an aromatic compound RH or a mixture of compounds RH and R1H where R and R1 each represents a phenyl, naphthyl, or thienyl residue, substituted by at least one halogen atom or by at least one hydrocarbon radical, or by at least one ether or thioether group, or represents an unsubstituted thienyl residue, in presence of a halide of ortho-, meta-, or pyro-phosphoric acid or mixture of these acids, and a metal salt of sulphuric acid with the exception of a salt of an alkali or alkaline-earth metal. The metal salt may be a sulphate of manganese, silver, zinc, cadmium, copper, mercury, tin, or lead.  The preferred halide is phosphorus oxychloride.  The phenyl, naphthyl, or thienyl residue of the starting material may carry 1-3 hydrocarbon radicals, which may be alkyl, aralkyl, or aryl radicals, e.g. methyl, benzyl, or phenyl.  It may carry alkyl groups of 1-18 carbon atoms, e.g. ethyl, butyl, hexyl, octyl, or decyl groups.  Benzene, naphthalene, or thiophene derivatives containing 1-3 ether or thioether groups, e.g. ethoxy, propoxy, butoxy, or other alkoxy, aralkoxy, or aryloxy groups, may be used.  Thiocoumarone may also be used as starting material.  The reaction takes place under substantially though not absolutely anhydrous conditions.  It may be carried out in presence of a diluent such as benzine, chlorobenzene, nitrobenzene, dibutyl ether, butyl acetate, nitromethane, or nitropropane.  Temperatures between 80 DEG C. and 180 DEG C. may be used.  The reaction results in the production of monosulphone with substantially no disulphone whatever the relative proportions of the reactants.  Examples describe: (1) the preparation of 4,41-dimethoxydiphenylsulphone from a mixture of methoxybenzene, copper sulphate, and phosphorus oxychloride; (2) the preparation of 4,41-dichloro-diphenylsulphone from a mixture of chlorobenzene, silver sulphate, and phosphorus oxychloride; (3) the preparation of 4,41-dimethoxy-diphenylsulphone from a mixture of methoxybenzene, phosphorus oxychloride and mercuro sulphate.
Patent GB-399016-A (GB)
Title: Improvements in and relating to signal receiving systems
IPC: H04R3/00
Filed: 1932-09-15
Abstract: .399,016. Loud-speakers; circuits for magnetic instruments. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Whelan, D. O.; 504, Avondale Avenue, Haddonfield, New Jersey, U.S.A.) Sept. 15, 1932, No. 25723. Convention date, Sept. 15, 1931. [Class 40 (iv).] The output of a loud-speaker is controlled by varying the flux density of an auxiliary gap forming a magnetic shunt to the main gap. Fig. 1 shows a moving-iron loud-speaker unit comprising magnet energizing coils 12, 13, and speech coils 17, in which the main air-gap in which the armature 14 works is shunted by an auxiliary gap 21 associated with a winding 22. The winding 22 constitutes the output choke of the final amplifier 24, Fig. 2, of a receiver, so that the current through the winding will increase with increasing signal input and vice versa. The flux across the auxiliary gap 21 will thereby increase, shunting the main gap and reducing the loud-speaker output, so that the arrangement constitutes an automatic volume control. In Figs. 3 and 4 the same principle is applied to a moving-coil loudspeaker, the auxiliary coil 38, associated with an auxiliary air-gap 37, being in this case connected in series with the primary of the output transformer 41. Manual control is additionally provided at 43, and the winding 38 may be made to assist the main coil 34 by a reversing switch 42 to give added sensitivity. The invention is also applicable to loudspeakers having permanent field magnets. Specification 240,528, [Class 40 (iv), Telephones &c.], is referred to. The Specification as open to inspection under Sect. 91 states that instead of using an auxiliary field coil for control purposes the current through the whole field winding may be controlled e.g. by shunting or reversing part of the winding. This subject-matter does not appear in the Specification as accepted.
Patent GB-354074-A (GB)
Title: Improvements in and connected with submersible electric motors
IPC: H02K3/44
Filed: 1930-08-29
Abstract: 354,074. Motors. SURJANINOFF, M., 112, Hauptstrasse, Stammersdorf, near Vienna. Aug. 29, 1930, No. 25876. Convention date, Sept. 3, 1929. [Class 35.] Coils; insulation; cores.-In a submersible motor in which both the stator and rotor are covered by the liquid, the stator winding is composed of former wound coils which are impermeable to the liquid. In the form shown, the former wound stator coils of a squirrel cage motor comprise an assembly of insulated and impregnated conductors 20, Fig. 4, surrounded by a layer of impregnated tow or soft rubber 21 and a layer of cotton insulation 23, and the whole is enclosed by a shell of insulation 24 which resists the action of the liquid, and is preferably of vulcanized rubber. The interconnections between coils may be insulated in a similar manner. To facilitate the mounting of the coils, the teeth or the tops thereof may be detachable from the core. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a watertight terminal box, Fig. 6 (Cancelled), in which the cable passes through a gland 33 to the terminal board 38, a watertight joint being obtained by deforming the rubber pad 36 by screwing down the nut 35. This subject-matter does not appear in the Specification as accepted.
Patent GB-154048-A (GB)
Title: Economizer for coke-fired crucible furnaces and the like
IPC: F27B14/08
Filed: 1919-10-22
Abstract: 154,048. Batty, G. Oct. 22, 1919. Flue covers. - A pivoted cover adapted to close the top of the flue of a crucible furnace or the like and prevent cold air from passing through the furnace when operations are temporarily suspended, consists of a refractory block k which is detachably held in a metal frame h by means of bolts i bearing against tension plates j, the plates having bosses l which engage with recesses in the refractory block.
Patent GB-1469715-A (GB)
Title: Ultraviolet absorbing lenses
IPC: G02B5/22
Filed: 1974-06-12
Abstract: 1469715 Ophthalmic lenses WESLEYJENSSEN Inc 12 June 1974 [20 June 1973] 25961/74 Heading G2J A spectacle or contact lens for correcting aphakic vision comprises a polymeric lens-shaped body within which is uniformly dispersed an ultraviolet absorber. Non-polymerizable and copolymerizable benzophenones are used as U-V absorbers. Dyes may be added to absorb selected wavelengths of visible light.
Patent GB-1328421-A (GB)
Title: Syringe filling apparatus
IPC: A61M5/00
Filed: 1971-04-19
Abstract: 1328421 Syringe filling apparatus SHERWOOD MEDICAL INDUSTRIES Inc 19 April 1971 [8 April 1970] 26068/71 Headings B8T65 T68A T68D T68E T68J T69 and T72 A medicament filling device 10 for a syringe of the type having a barrel member 22 and a plunger (26) comprises frame sections (36), (38), a syringe filling station 110 for supporting a syringe to be filled, means (119) for filling the syringe barrel and means (20) for inserting the plunger after filling. After loading the medicament dispenser 14 and depressing power button 183 the empty syringes are loaded into the turret 12 at location 270. Valve 140 is opened for the purpose of inserting the tube 142 therein by pressing button 278 which actuates solenoid (153). The turret 12 is indexed to the next station by pressing index button 272 and another syringe barrel 22 and plunger (26) can be loaded. Manual depression of button 272 continues until the first empty syringe arrives at the syringe loading station 117. The presence of a syringe barrel is sensed by a switch (308) at filling station 110, and an indication that the syringe is unfilled is provided by a photo-cell 188 causing energization of solenoid (153) opening valve 140 to allow filling of the syringe. When the level of medicament is at the correct level in the syringe a signal from photo-cell (188) ceases and causes the control circuit to de-energize solenoid (153) and close valve 140 to terminate the flow of medicament. In response to the filling of the first syringe the index motor (92) energizes rotating turret 12 to the next station placing the first syringe at plunger station (216) and the second syringe at station 110. After indexing, motor (223) drives tool head (218) downward and releases plunger assembly 25 in the aligned syringe barrel 22. The piston (27) then engages with syringe barrel 22 and the entrapped air builds up sufficient pressure to captivate piston (27) and permits all but a small amount of residual air to escape. Upon completion of rotation of the plunger cam (239), a switch (244) in the control circuit is opened allowing indexing to occur when another cylinder barrel 22 is filled. The first syringe is then indexed to the camming station (20) and enters cam channel (252) after a further index. After two subsequent indexing movements the first syringe is through the cam member (252). and the filling and plunger inserting operation of the machine is complete and the filled syringe can be unloaded at station 275. Operation is discontinued as required by pressing power button 183 which terminates all functions of the filling device 10.