baber/WOPTO huggingface dataset:
Patent GB-423521-A (GB)
Title: Azo dyestuffs and their manufacture
IPC: C09B35/40
Filed: 1933-08-04
Abstract: Polyazo dyes are made by coupling a dihydroxybenzene or a nuclear derivative thereof with one molecular proportion of p-nitro-or p-acylaminodiazobenzene and one molecular proportion of another nitro- or acylamino-diazo compound, or with two molecular proportions of a nitro- or acylamino-diazo compound other than p-nitro- or p-acylamino-diazobenzene, converting the nitro and/or acylamino groups into amino groups, and finally tetrazotizing and coupling with a coupling component (2 mols.). They dye leather in level brown shades.  In examples: (1) the dyestuff picramic acid \sQ resorcinol is reduced with calcium hydrosulphide, tetrazotized and coupled with m-phenylenediamine-4-sulphonic acid; (2) the dyestuff p-nitraniline-o-sulphonic acid --> resorcinol \sM picramic acid is reduced and coupled as above.  Other end components specified are 1-p-sulphophenyl-3-methyl-5-pyrazolone, R salt, H acid, a - and b -naphthol, 2-naphthol-6-, 8-, 5- or 7-sulphonic acid, 2-naphthol-3 : 7-, 4 : 8- or 6 : 8- disulphonic acids, 1- or 2-naphthol-3 : 6 : 8-trisulphonic acid, 1-naphthol-2-, 4- and 5-sulphonic acid, 1 : 6- or 1 : 7-Cleves' acid, naphthionic acid, 1-phenyl-3-methyl - 5 - pyrazolone, 1 - (4 - chlor - 3 - sulpho - phenyl) - 3 - methyl - 5 - pyrazolone, acetoacetic - anilide or o-chloranilide, a -methylindole, a -or b -naphthylamine, 1 : 5 : 7-, 2 : 8 : 6-, 1 : 8 : 4-, 1 : 8 : 6-, 2 : 3 : 6-, 2 : 5 : 7, and 2 : 7 : 3-aminonaphtholsulphonic acids, b -hydroxynaphthoic acid, J - acid urea, p - aminobenzoyl - J - acid, phenyl-J acid and salicylic acid.  Other middle components specified are b -resorcylic acid, 2 : 4-dihydroxybenzene - 1 - sulphonic acid, 1 : 3-dihydroxy-4-chlorbenzene, orcinol, catechol and dihydroxynitro-, bromo- or fluorobenzenes.  First and end components of the benzene, naphthalene, anthracene, diphenyl, phenylnaphthyl, dinaphthyl and carbazole series may in general be used and these may carry halogen, alkyl, alkoxy, hydroxy, nitro, amide, carboxy, sulpho, aryloxy and alkaryl groups.  The Specification as open to inspection under Sect. 91 comprises also the use of two equivalents of any diazotized monoacyldiamino or nitroamino derivative of an aromatic compound as first component and gives an example of the preparation of the dyestuff acetylamino-1 : 4 : 7-Cleves' acid --> resorcinol (hydrolysed) (2 mols.) \sQ resorcinol (1 mol.).  Dihydroxy anisidines and phenetidines are also specified as middle components.  This subject-matter does not appear in the Specification as accepted.
Patent GB-898990-A (GB)
Title: Improvements in or relating to the production of alkali metal cyanides
Inventor: GREEN CHARLES PERRY
IPC: C01C3/10
Filed: 1960-06-23
Abstract: The filtration of slurries of alkali-metal cyanides, obtained by evaporating alkali-metal cyanide solutions, is improved by controlling the iron content of the solution so that the filter cake contains a maximum of 22 p.p.m. of iron, thereby reducing the water content of the filter cake obtained.  The iron content may be controlled by using water which contains less than 1 p.p.m. of iron, or by employing stainless steel or non-ferrous equipment. The alkali metal cyanide solution may be obtained by reacting hydrogen cyanide and alkali-metal hydroxide in the presence of water.
Patent GB-315770-A (GB)
Title: Improvements in and relating to concrete hoisting and pouring plant and the like
IPC: B65D88/58
Filed: 1929-07-17
Abstract: 315,770. Wagener, T. July 17, 1928, [Convention date]. Skips.-A skip c for hoisting and pouring concrete is discharged through one or more pipes e pivotally mounted at f and normally held in the raised position by springs g, counterweights or other means. When the bucket is raised on the mast k, the pipes are turned down into the discharging position by rollers l on the mast engaging rails m. The pipes may be long enough to prevent any flow of concrete when in the raised position, or shorter pipes with sliding doors &c. may be used. As shown, the bottom of the skip is made wedgeshaped at d to direct the material towards an outlet pipe e at each side.
Patent GB-760177-A (GB)
Title: Process and apparatus for the manufacture of paper filter elements
IPC: B31D1/00
Filed: 1954-07-29
Abstract: 760,177. Filters. BINZER, C. H., [trading as BINZER PAPIERFABRIK, J. C.]. July 29, 1954 [Aug. 13, 1953], No. 22179/54. Class 46. [Also in Group VIII] Moisture-resistant filter discs 2 to which a silicone may have been applied during manufacture are impregnated at 6 with synthetic resinous materials, and are removed by, and drained on, a conveyer 7, excess resin being expressed at 8, 9 and the discs being conveyed to a compartment at a temperature of, e.g. 100‹C. for drying, and to a compartment 15 at a higher temperature for hardening the resin. They are then received by a funnel 17 which aligns and stacks them on a pin 21. The discs 2 may be provided with a replaceable ply of moisture-resistant or hygroscopically-acting filter paper.
Patent GB-1182645-A (GB)
Title: A Highly Fluorinated Dialkyl Ketone
Inventor: ROBINSON PETER
IPC: C07C45/00
Filed: 1967-05-12
Abstract: 1,182,645. Nonadecafluoro - 3,4 - dimethyl-4- ethyl - 3H - hexan - 2 - one and its derivatives. IMPERIAL CHEMICAL INDUSTRIES Ltd. 18 April, 1968 [12 May, 1967], No. 22182/67. Heading C2C. [Also in Division C3] The novel compound of the formula (nonadecafluoro - 3,4 - dimethyl - 4 - ethyl - 3H - hexan-2-one) is obtained by reacting tetrafluoroethylene pentamer (C 2 F 4 ) 5  with water in the presence of a tertiary organic nitrogen base and a polar organic solvent, neither of which reacts with the pentamer. The compound may be reduced with lithium aluminium hydride to the corresponding secondary alcohol, which may be converted to the corresponding acrylate by treatment with acryloyl chloride, or it may be converted to the corresponding cyanhydrin.
Patent GB-590564-A (GB)
Title: Electrical means for reproducing motion
IPC: G08C19/40
Filed: 1944-11-10
Abstract: 590,564. Telemetering. BENDIX AVIATION CORPORATION. Nov. 10, 1944, No. 22219. Convention date, May 28, 1943. [Class 40 (i)] The transmitter and receiver in a system for repeating the readings of, e.g. an altimeter are dissimilar instruments, one having tapped stator windings 5 fed with alternating or pulsating current and an unwound magnetized rotor 13, and the other having star-connected stator windings 14... 16 and a wound or unwound rotor 18, and the two instruments are interconnected through a transformer 19 which is such that the fundamental component of the supply frequency is balanced out and only the second harmonic is present in the star-connected stator windings. As shown, the instrument with the unwound rotor is the transmitter and the wound rotor is fed from the supply mains. In a modification, Fig. 2 (not shown), it is the receiver. In a further modification Fig. 3 (not shown), the wound rotor at the receiver, instead of being fed from the supply mains, acts as a transformer secondary and is driven by an induction motor into the position of zero output. The magnetized transmitter rotor in Figs. 1 and 3 may be replaced by a magnetic or earth inductor compass as described in Specification 565,277, and the wound rotor 18 and its counterpart in the modifications may be replaced by unwound rotors as described in Specification 580,850.
Patent GB-1294065-A (GB)
Title: Circuit arrangement with capacity diode tuning for displaying tuning frequencies
IPC: H03J3/18
Filed: 1971-04-19
Abstract: 1294065 Transistor oscillators; tuning receivers LOEWE OPTA GmbH 19 April 1971 [19 Feb 1970] 22252/71 Headings H3Q and H3T The output voltage of an oscillator circuit 1, provided with a capacity tuning diode 2, is conducted via a frequency dependent network 12 and after rectification is fed to the ends of a potentiometer resistor 21. The tap off M of the resistor 21 is connected mechanically to the pointer of a display scale 24 and can be adjusted to the required tuning valve and the tap off is fed back electrically via a D.C. amplifier 25 to the capacity tuning diode 2 of the oscillator circuit. The oscillator circuit may provide the oscillator for a radio or T.V. receiver. At the centre frequency of the oscillator 10 the frequency dependent bridge 13-16 provides oppsite polarity outputs from rectifiers 19, 20 to the ends of the potentiometer 21 so that there is zero voltage at the tap off M Movement of the tap off M from its central position in either direction causes a voltage to be applied via D.C. differential amplifier 25 to the variable capacity diode 2 which alters the oscillator frequency. The change in oscillator frequency alters the output from the frequency dependent network 13-16 so as to bring the voltage at the new setting of the tap off M near to zero. The circuit provides accurate tuning and display on a scale 24. The tuning knob, the pointer on the scale 24 and the tap off M may be connected by a pulling system. A high frequency amplifier may be inserted between the oscillator 1 and the RC network 12.
Patent GB-1417510-A (GB)
Title: Composition for preparing foamed polyethylene material with  mechanical properties
IPC: C08J9/06
Filed: 1973-08-06
Abstract: 1417510 Polyethylene compositions and foams IDEMITSU KOSAN CO Ltd 6 Aug 1973 [11 Aug 1972] 22366/75 Divided out of 1417509 Headings C3C and C3P Compositions for preparing polyethylene foams comprise (1) internally unsaturated polyethylene of density 0À95 to 0À97 g./cc. and melt index at least 4À0 and (2) at least 30 per cent by weight of the mixture of inorganic calcium compound filler material. The compositions may also contain foaming agents, e.g. azodicarbonamide, diphenyl sulphone-3,3<SP>1</SP>- disulphohydrazide or diphenyl hydrazide benzyl sulphonate; crosslinking agents, e.g. 2,5-dimethyl - 2,5 - di - (t - butylperoxy)hexene - 3, dicumyl peroxide, di-t-butylperoxide or 1,3-bis- (t - butylperoxyisopropyl)benzene; lubricants and colorants; and may be heated to form crosslinked foams. The polymer may be polyethylene or a mixture thereof with a polymer of propylene, butene or hexene. The calcium compound may be calcium sulphate, sulphite, carbonate, silicate or hydroxide. Examples describe the preparation of foams from compositions of polyethylene and calcium sulphite, sulphate and carbonate using azodicarbonamide and dimethyl di-t-butylperoxy hexene-3.
Patent GB-789536-A (GB)
Title: Spindle for use in a magazine phonograph
IPC: G11B17/16
Filed: 1954-07-30
Abstract: 789,536. Phonographs. HANSEN, H. C. July 27,. 1955 [July 30, 1954], No. 22381/54. Class 40 (2). An exterior of synthetic resinous material covering an interior rigid core providing mechanical rigidity forms the stationary centre spindle for a magazine phonograph of the type in which a stack of records is supported on the spindle which extends vertically from the centre of the turntable and has a shoulder to support the lowermost record which when laterally displaced to disengage it from the shoulder drops on to the turntable. As shown, the core is in two parts, a lower portion 10 having an annular recess 12 to key the resinous material and a bore to receive the lower end of a rod 14 which has a flattened portion 16 bent obliquely to the rest of the rod. Horizontal shoulders 22, 26 in the moulded resinous material 18, 24 are vertically spaced apart by a distance greater than the thickness of one but less than the thickness of two records. The lower end of the spindle is received in a stationary sleeve, not shown, about which the turntable rotates and is positioned by a projection 28 of the moulding in a notch in the sleeve. Suitable dimensions and materials for the spindle are described in the Specification.
Patent GB-820677-A (GB)
Title: A screw cap, stopper, or the like, with a safety ring
IPC: B65D55/02
Filed: 1957-07-16
Abstract: 820,677. Container closures. BRUNE, H. July 16, 1957 [Jan. 10, 1957 ; June 5, 1957], No. 22449/57. Class 125(3). A tamper-proof screw cap with threads 1a and flutings 11 has the lower edge provided with an external serration 2 which cooperates with teeth 5 on a safety ring 4 which has also internal teeth 6 to engage projections 9 on the container neck. The ring 4 is slipped over the neck 8 of the container and the cap 1 screwed into place, teeth 3 riding over teeth 5 ratchet fashion. Unscrewing of the cap causes the ring 4 to be broken and indicate tampering.
Patent GB-1008135-A (GB)
Title: Improvements in circuits for protecting electrical loads from an adverse condition
IPC: H02H7/085
Filed: 1964-06-01
Abstract: 1,008,135. Protective arrangements; control of motors. TECUMSEH PRODUCTS CO. June 1, 1964 [June 3, 1963], No. 22555/64. Headings H2J and H2K. [Also in Division H3] A protective control system, e.g. for a motor 12, comprises a contactor 16 and a relay having contacts 32 in series with the contactor coil 20 and a coil 36 in series with a three-electrode device, e.g. a silicon controlled rectifier 38, having its control electrode connected to a bias circuit including a condition responsive impedance, e.g. a negative temperature coefficient resistor 28 in the motor winding 10. A positive feed-back circuit provides a large differential between, e.g. the temperature at which the motor supply is interrupted and the temperature at which the supply can be restored. In the arrangement shown, with the motor running under normal conditions, the rectifier fires on alternate half-cycles to maintain the relay coil 36 energized, the necessary bias being provided by a circuit through resistors 48, 28, 34. This bias is supplemented by the positive feed-back provided by the contactor coil current flowing through the resistor 34. When the winding temperature becomes excessive the resistance of the resistor 28 falls, causing a reduction in the bias so that the rectifier 38 ceases to fire. The consequent opening of the relay contacts 32 removes the positive feed-back, so that a considerable reduction in winding temperature to suitably increase the resistance of the resistor 28 is necessary before the rectifier can fire. Figs. 2 and 3 (not shown) illustrate arrangements in which further resistors provide a " voltage " positive feed-back in addition to the " current " feed-back.
Patent GB-1010420-A (GB)
Title: Improvements in or relating to devices for compressing a gas and simultaneously producing a vacuum
Inventor: KUBAN ROBERT
IPC: A61M16/00
Filed: 1964-06-01
Abstract: 1,010,420. Bellows. PRESNA MECHANIKA NARODNY PODNIK. June 1, 1964, No. 22612/64. Heading F1N. A device for continuously compressing a gas and simultaneously producing a vacuum, comprises pairs of bellows 110, 111, 130, 131, etc. arranged symmetrically about an axis 26 and disposed between parallel baseplates 1, 2, each pair being separated by a swash plate 16 secured to the outer race 151 of a bearing 15 having an inner race inclined with respect to its axis of rotation 26. The inner race is secured to a hollow shaft 5 rotatable in a bearing 4 by a pulley 12 secured thereto and driven from a motor 6 via belts 8, 11 and a countershaft 9, 10. The volume of gas supplied and exhausted is adjusted either by varying the speed of the motor 6 or by adjusting the inclination of the bearing 15. The bearing 15 is pivoted on pins 14 to the shaft 5 and its inclination is adjusted by rotating a screw 22 whereby a pivoted lever 20 acting through a bearing 23 moves a tierod 19 which thereby moves a lever 18 pivoted at 25 to the shaft 5 to effect movement of a tierod 17 secured to the bearing 15. The swash plate 16 is provided with a fork 27 which engages a spacer 3 to prevent rotation of the plate with the bearing 15. The end of each bellows 110, 111, 130, 131... remote from the plate 16 is in communication through a hole 30 and a suction valve 31 with a suction tube 330, and through the hole 30 and a delivery valve 32 with a delivery tube 340.
Patent GB-1597275-A (GB)
Title: Distance measuring system
IPC: G01S17/14
Filed: 1978-05-25
Abstract: This device operates in accordance with the principle of measuring the transit time of a light pulse. The light beam (j1) emitted by a transmitting diode (14) fed by a laser pulse generator (10) passes to a transmitter lens (12). The greatest proportion of the light beam is directed to a target object. The light rays (j3) reflected from the target object pass to a receiving diode (23) of a measuring channel (I). A small proportion of the light beam (j1) emitted by the transmitting diode is dispersed at the transmitter lens and conducted as reference beam (j2) to a receiving diode (15) of a reference channel (II). Each of the receiving diodes is allocated one parallel resonant circuit (17; 16) each as load impedance. The emitted laser pulse triggers the reference and the measuring channel in optical manner. To obtain the time-significant signal edges, the first sinewave zero crossing is detected in the reference channel and the second sinewave zero transition of the sinusoidal oscillation started in the relevant parallel resonant circuit is detected in the measuring channel. The sensitivity of the device can be increased by the galvanic isolation between the transmitter and receiver. Using a parallel resonant circuit as load impedance has the further advantage that the optical filters previously required are no longer needed. <IMAGE>
Patent GB-998828-A (GB)
Title: Improvements in or relating to the preparation of alpha-3,4-dichlorophenyl-alpha-methoxyacetic acid and intermediates in the production thereof
IPC: C07C49/80
Filed: 1962-06-13
Abstract: The invention comprises: (1) 1-dichloroacetyl -3,4-dichlorobenzene and its preparation by reacting dichloroacetylchloride with o-dichlorobenzene in the presence of an equimolar amount of a Friedel-Crafts catalyst in an excess of o-dichlorobenzene, followed by hydrolysing the reaction mixture; (2) the preparation of a  - 3,4 - dichlorophenyl - a  - hydroxyacetic acid by hydrolysing 1-dichloroacetyl-3,4-dichlorobenzene with an alkali metal hydroxide solution, followed by acidifying the reaction mixture; (3) the preparation of a -3,4-dichlorophenyl-a -methoxyacetic acid by the above two processes followed by methylation of the hydroxy compound.
Patent GB-188115-A (GB)
Title: Improvements in machines for slicing meat and the like
IPC: B26D1/16
Filed: 1921-08-26
Abstract: 188,115. MarÚe, J. A. E., and Unger Akt.-Ges., Geb. Aug. 26,1921. Cutting slices in succession.-In a slicing-machine wherein the table is stationary and the disc knife 2 is journaled in a frame 3 which is oscillated by a handle 7, the knife is rotated by mechanism operated by the oscillation of the frame. The frame 3 is secured to a hollow shaft 4, journaled in the base 1, to which is attached a counterweight 5 connected to a horizontally movable rack 8, which rotates, by means of gearing, a shaft 11 passing through the shaft 4. A sprocket wheel on the shaft 11 is connected with a sprocket on the knife 2 by a chain 9. The knife 2 and frame 3 are counterbalanced by the weight 5 and a spring 6, and the knife rotates continuously, a free wheel being provided in one of the gear wheels. Buffer springs 20 for the weight 5 are provided. The chain tension is adjusted by a member 21 regulated by a sleeve 22 and spring 25, holes 23 being provide for a set screw 24. A handle 47 disengages the table from the feed mechanism. The meat tray 50 is adjustable by means of screws 51, and a drain 58 for the juices is provided.
Patent GB-1111526-A (GB)
Title: Improvements in and relating to water heating apparatus
IPC: F24H9/20
Filed: 1965-05-28
Abstract: 1,111,526. Water heaters. KENDON DEVELOPMENTS Ltd. 28 May, 1965 [29 May, 1964], No. 22721/65. Heading F4A. The sensor of a thermostat controlling the electric element of a storage heater used to supply boiling water, is situated in either the supply or the draw-off conduit of the heater. In the Figure 3 embodiment the sensor 33 in pocket 34 is situated in inlet conduit 23 leading from float-controlled supply tank 24 to the insulated metal heater 21 through feed valve 26. The heater 21 is provided with a U-shaped expansion pipe 35, draw-off tap 38 and valvecontrolled drain 39. In use, after heater 21 has been filled from tank 24 and element 22 switched on, the silicone rubber diaphragm 27, Fig. 4, of valve 26 is normally closed by spring 29 against pipes 30, 31, despite the pressure of the supply head of water from tank 24 transmitted through pipe 30 and the pressure developed in the heater 21 transmitted through the pipe 31, to stop communication between the heater and the supply tank. As vapour pressure builds up in heater 21 on heating, the steam passes out over pocket 34 and sensor 33, thereby switching off element 22, and the increased pressure forces open valve 26 to allow the steam to pass back up inlet conduit 23 to the supply tank 24, if its pressure exceeds that of the supply head of water. With element 22 switched off, pressure in heater 21 decays, till the supply head pressure is sufficient to feed water from tank 24 through conduit 23, pipe 30, valve 26 and pipe 31 to the heater 21. Eventually the heater pressure will decrease to a point where spring 29 can again close off valve 26 to break communication between tank 24 and heater 21. Around this time the cold feed water flowing over pocket 34 on its way to heater 21 will cause element 22 to be switched back on. In this way the rate of supply of cold water to the heater even after draw off of hot water, is regulated to be insufficient to cool the surface of the stored water to below atmospheric boiling point, so that the supply of boiling water may always be maintained. The U-shaped expansion pipe 35 is provided with an upper air bleed hole 40 and a lower hole 41 to prevent the formation of a head of water in the pipe limbs 36, 37. In the Figure 1 embodiment the sensor 7 controlling the heating element 4 is located in pocket 15 in outlet conduit 8, which also acts as an expansion pipe. On heating a steam/water mixture expands over pocket 15 causing sensor 7 to switch off element 4. On cooling condensed water from pipe 14 flows back into pocket 15 causing sensor 7 to re-energize element 4. On draw off of hot water by opening valve 10 in pipe 9 to allow a cold water inflow, hot water flowing past pocket 15 causes de-energization of element 4 for a short time, till the water in the pocket again cools down. In a modification (Fig. 2) the sensor may be horizontally located in front of the water pocket.
Patent GB-682330-A (GB)
Title: Improvements in or relating to electric switches or switch-fuse units
IPC: H01H9/10
Filed: 1949-09-02
Abstract: 682,330. Snap-action switches. SHARP, W. Aug. 17, 1950 [Sept. 2, 1949; Nov. 12, 1949], Nos. 22737/49 and 29029/49. Class 38 (v) The movable contact carrier A is rotatably mounted by trunnion pins 8, 18 in the lid of the switch box and consists of two parts 5 which clamp between them a number of cartridge fuses 3 and are themselves held in position by socket members or end caps 6, 7. The cap 7 is permanently rotatably mounted in the right hand side of the lid, Fig. 1, and is controlled by a dead-centre snap spring 14. The cap 6 has a trunnion 8 slidably engaging the left hand side of the lid and is controlled by a spring 11 so that it may be moved to allow the carrier A to be detached and the fuses replaced. The trunnion 18 of the cap 7 carries a pin 21, engageable with lost motion by a notch 20 in the operating lever 19. The lever 19 also has a flange 23 co-operating with a pin 22 on the switch box to prevent removal of the lid when the switch is "on". The fuses 3 each bridge two spring contacts 2.