baber/WOPTO huggingface dataset:
Patent GB-1254233-A (GB)
Title: Linearization of a phase control power amplifier
Inventor: KOCH ALBERT FREDERICK
IPC: H02P29/00
Filed: 1969-11-24
Abstract: 1,254,233. Control of D.C. motors. GENERAL ELECTRIC CO. 24 Nov., 1969 [16 Dec., 1968], No. 57446/69. Heading H2J. [Also in Division G3] In a system in which A.C. power to a motor is regulated in response to a speed error signal by phase angle control, non-linearity of the system (due, e.g. to the A.C. supply being sinusoidal) is compensated for by passing the error signal through a digital amplifier 6 whose gain varies at at lest one predetermined value of the error signal. Thus, the inherent non-linearity, which approximates to curve 13<SP>1</SP>, is balanced by the response of the amplifier, curve 15<SP>1</SP>, to produce the desired linearity 14<SP>1</SP>; A 1  represents the error signal at which the gain is is varied. In the motor speed control system shown the actual speed from a pulse generator 5 and the required speed are expressed in digital form, the error being supplied to the amplifier 6 as a binary number. The amplifier (Fig. 4, not shown) comprises logic circuits; the error is entered into a six bit shift register (five bits for the binary number and one to indicate sign), which is examined to determine whether it is above or below the prescribed value. If below, the register is connected directly to the output, but if above a mathematical operation, based on theoretical considerations, is performed in which a constant is subtracted by a serial subtractor, the result is shifted one step in the register (to divide by two) and another constant is added in a serial adder. This is fed back to the shift register and hence to the output To compensate also for non-linearity due to the back e.m.f. of the motor, positive feedback is provided by adding a speed signal, from a tachogenerator 7, to the output of amplifier 6; for this purpose the signals may be in analogue form. The result is used to adjust the firing angle of thyristors in power amplifier 3 (and Fig. 1A, not shown).
Patent GB-1405637-A (GB)
Title: Production of 1-amino-4-hydroxyanthraquinones substituted in the 2-and or 3-positions
IPC: C07C227/16
Filed: 1972-12-15
Abstract: 1405637 Preparation of 2- and/or 3-substituted-1-amino-4-hydroxy anthraquinones BADISCHE ANILIN- & SODA-FABRIK AG 15 Dec 1972 [18 Dec 1971] 57932/72 Heading C4P Anthraquinone compounds of the general formula wherein (a) X and Y are each H, carboxy or alkoxycarbonyl of 2 to 7 carbon atoms or (b) X is chlorine, bromine or hydroxy and Y is chlorine, bromine or H or (C) X is C 1 -C 6  alkyl and Y is H, chlorine, bromine, C 1 -C 6  alkyl, carboxy or alkoxycarbonyl of 2 to 7 carbon atoms are prepared by heating a 3<SP>1</SP>-nitrobenzoyl-benzoic acid of the general formula wherein X and Y are as above in 90-100% strength sulphuric acid or in oleum containing up to 15 weight per cent of free sulphur trioxide in the presence of boric acid, boric acid esters, boron trihalides or boron trihalide complexes to 120-200 C. The reaction mixture preferably contains a reducing agent and the 31-nitrobenzoyl-benzoic acid compound may be produced by nitration in sulphuric acid and introduced into the reaction in the form of the nitration mixture. The products are dyes giving red shades on linear polyesters, polyamides and cellulose acetate or are dye intermediates.
Patent GB-1327188-A (GB)
Title: Can body making machine
IPC: B21D24/00
Filed: 1971-12-16
Abstract: 1327188 Making can bodies; capping STOLLE CORP 16 Dec 1971 [11 Jan 1971] 58512/71 Headings B3A and B3Q A can body making machine comprises a stripping and doming punch within a drawing punch both of which are carried by rams which are driven by tracks on a barrel cam, the tracks providing a dwell when the rams are retracted, a constant speed advance of both rams as a unit, a forward dwell for the doming and stripping punch, a rapid return for the drawing punch and a rapid return for the doming and stripping punch as soon as the drawing punch has cleared the formed can body. As shown, the machine also includes a device 11 for trimming the formed cans to length before they are discharged into a shoot. The machine is driven by an electromotor 19 and gearing 18 to a shaft 17 for the barrel cam 16, which has separate tracks 14, 15 for the rams 12, 13 carrying the punches 25, 26, Fig. 4. Air is supplied through the hollow stem of punch 26 and escapes past a seating 28 to prevent collapse of a can when the punch 25 is withdrawn from the can. Coolant enters the punch 25 through a passage 32 and is discharged through a passage 35. Feeding and restoring to form.-Cup shaped blanks from a shoot 40, Fig. 3, are fed by a lever 41 against a stop 47 aligned with the punches. The lever and stop have semi-cylindrical surfaces 46, 48 for re-rounding the blanks, and the lever is driven by a cam 20 on the shaft 17. Cups drawn through a die pack 37 fall on to a conveyer which advances them in steps to the trimming mechanism 11, the conveyer and trimming mechanism being driven by a chain 22 from the shaft 17.  Relief mechanism.-A shear pin (39), Fig. 2 (not shown), connects the drawing punch 25 to its ram 12.
Patent GB-1455255-A (GB)
Title: Textile process
IPC: D05B81/00
Filed: 1972-12-22
Abstract: 1455255 Folding edges of and seaming non- metallic sheet material ILCOR GmbH 20 Dec 1973 [22 Dec 1972] 59352/72 Heading B5K [Also in Division Dl] The seam allowances 11a, 12a of a seam formed from fabrics 11, 12 presenting their face sides to each other and folded back, each to lie against the reverse side of the fabric. The seam may be a welded seam and the allowances caused to lie against the fabric by heat or steam pressing, thermoplastic deformation or by adhesive or other bonding. In a seaming machine a folder 14 secured to a fixed plate 16 folds the allowances back over seamed fabric lying above and below a plate 15 pivoted at 17 to plate 16. A portion of the folder 14 comprises parts 24a, 24b urged towards each other by a spring 27 and heated by a coil 28 to set the allowances in their folded back position before the seam is opened out. In another embodiment (Fig. 5, not shown) pressing arrangements including a steam jet and heated pressing members are provided, the seam being drawn therethrough by rollers (77, Fig. 6, not shown).
Patent GB-1433499-A (GB)
Title: Bottle filling control device
IPC: B65B3/30
Filed: 1973-12-21
Abstract: 1433499 Filling control system L'OREAL 21 Dec 1973 [21 Dec 1972] 59389/73 Heading B8T When a container 2 is raised up into a dispensing head 17 of a bottle filling machine a conduit 22 is closed by a valve plate 20. A gas shut-off valve 24 is then operated momentarily by a cam (not shown) so that compressed air from a conduit 29 is connected to conduits 22, 33. If the conduit 22 is closed then the pressure in conduit 33 is large enough to move the slide of a pneumatic distributer 30 to a position which connects the compressed air source to a conduit 32. This air acts on a piston 14 in a ball valve 7 acting as a liquid shut-off valve such that a ball 10 is unseated allowing liquid to flow through the valve from a supply conduit 8 to the filling duct 6. A supply of air from a flow throttle 37 is introduced to the container during filling by a liquid detection probe 16. This air normally escapes through the top of the container but when the liquid level reaches the orifice of the probe 16, which is located at the point where the container is regarded as being full, the air is prevented from escaping. This builds up pressure in the pilot conduit 38 of a servovalve 36 which results in a membrane 46 closing an orifice 47. Thus compressed air, which has been entering the servo-valve 36 through an inlet 35, is prevented from venting to atmosphere through the orifice 47 and holes 49 and the pressure builds up above a second membrane 51, thus breaking a seal 53, 54 and connecting the inlet 35 to an outlet 39. The resulting flow from the outlet 39 will push the slide of the pneumatic distributer 30 back to its original position so breaking the connection to to the conduit 32. The valve 7, by virtue of a spring 12, then closes and filling ceases. Following the removal of the filled container from the dispensing head 7 a control arm 41a of a twoway pneumatic valve 41 is operated by another cam so a blast of compressed air enters the probe 16 and blows out any drops of liquid entrained during the filling.
Patent GB-1339728-A (GB)
Title: Butadiene oligomers and production thereof
IPC: C08F4/78
Filed: 1970-12-17
Abstract: 1339728 Butenyl-substituted cyclic oligomers of butadiene MITSUBISHI PETROCHEMICAL CO Ltd 17 Dec 1970 [24 Dec 1969] 59884/70 Heading C5E [Also in Division B1] Cyclic oligomers of butadiene containing a butenyl or isobutenyl substituent are prepared by contacting butadiene with a catalyst comprising (1) at least one compound of Co or Fe (2) at least one compound of Cr or Ni and (3) at least one trialkylaluminium or trialkenylaluminium. Preferred components are (1) a diketone or naphthenic acid salt of Co; (2) a chloride or oxychloride of Cr. 3 - (1 - methyl - 2 - propenyl) - cyclooctadiene is claimed per se, and other products are butenylsubstituted cyclododecatrienes, 3-methyl undecatriene is formed as a by-product.
Patent GB-1364815-A (GB)
Title: Preparation of microcapsules
IPC: C09B67/08
Filed: 1972-12-29
Abstract: 1364815 Microcapsules TOYO JOZO CO Ltd 29 Dec 1972 [30 Dec 1971] 59941/72 Heading B8C Microcapsules are prepared by dissolving or dispersing a core substance in a solution of a film-forming polymer, emulsifying the product in a liquid vehicle which is poorly miscible with the polymer solvent and adding to the emulsion a non-solvent for the polymer which is miscible with the solvent but only poorly miscible with the vehicle, whereby solvent is removed from the emulsified particles thereby to cause encapsulation of the core material in the polymer. Various core materials are mentioned, specific examples relating to pancreatin powder, phosphatase, lipase, glycolysis enzymes, urease, activated carbon and dried micro-organisms (Fusarium solani), the physiologically active substances thereby being converted into enteric forms. Many polymers are mentioned including cellulose derivatives, shellac, polyurethanes, polyacrylates, polyvinyls, gelatine, gum arabic, polystyrene, polyesters and co-polymers. The vehicle may be lipophilic (e.g. paraffin or silicone oil) or hydrophilic (e.g. ethylene glycol, aqueous gelatine solution or formamide), the solvent and non-solvent being chosen according to the nature of the polymer and the vehicle (e.g. benzene as solvent) and nhexane or petroleum ether as non-solvent with an ethylene glycol vehicle and polystyrene or polyester polymer. A finely divided solid, e.g. silica may be present to facilitate formation of a stable emulsion, this becoming incorporated into the microcapsule walls.
Patent GB-1341409-A (GB)
Title: Electrical barrier systems
IPC: H02H9/00
Filed: 1970-12-29
Abstract: 1341409 Intrinsically safe supply systems SYBRON CORP 29 Dec 1970 [11 Feb 1970] 61673/70 Heading H2H An intrinsic safety barrier assembly comprises a plurality of individual barriers 5, an electrical selector connected to all the individual barriers 5 for selecting the barrier transmitting the highest energy level, a master barrier n + 1, the selector being arranged to connect the barrier 5 which is transmitting the highest energy level to the master barrier n + 1 so as to prevent the barrier from transmitting energy above a predetermined level. Each of the individual barriers 5 is placed in a system supplying a load in a hazardous area from a supply 1 and is effective to prevent more than a certain amount of energy being transmitted to the load. A plurality of diodes 8, one in each individual barrier 5, effectively forms a selector functioning as an OR circuit, each of the diodes 8 being connected to an input terminal 9 of the master barrier n + 1, the other terminal 10 of which is connected to earth by way of a conducting rail GB. If, for example, the barrier 15 designated as n is transmitting a higher level of energy than the remaining barriers 5, it will have a voltage at the intersection of the resistors R 1 , R 3  which is higher than that at the corresponding points in each of the other barriers 5. Thus the barrier 5 marked n will be connected by its diode 8 to the terminal 9 and all the other diodes 8 will be back biased to prevent the other barriers 5 being connected to the master barrier n + 1. Should the energy level being transmitted by the barrier 5(n) tend to rise above a predetermined level the voltage at the intersection of R 1 , R 3  will rise to a value which causes the Zener diode Z 2  in the master barrier n + 1 to break down thereby connecting the intersection of R 1 , R 3  to earth causing a fuse F to rupture to safeguard the load in the hazardous area. A thyristor 11 is provided in shunt with the Zener diode Z 2  to be made conductive for protection of the diode Z 2 . If the voltage at the intersection of R 1 , R 3  reaches the rated voltage of a Zener diode Z 1  in the individual barrier 5(n) then the diode Z 1  breaks down and the intersection is connected to earth by way of terminals 2, 4. In other embodiments the components of the individual barriers include transistors.
Patent GB-1292660-A (GB)
Title: A process for producing phthalocyanine pigments
Inventor: KUBIAS JIRI
IPC: C09B47/04
Filed: 1969-12-24
Abstract: 1292660 Preparing phthalocyanines VYZKUMNY USTAV ORGANICKYCH SYNTEZ 24 Dec 1969 [25 April 1969] 62963/69 Heading C4P Phthalocyanine pigments stable in solvents are prepared by reacting together (a) substances capable of reacting to form a phthalocyanine pigment and including essentially phthalic acid or a derivative thereof and (b) an additive including essentially a phenyl-substituted aliphatic polycarboxylic acid or a derivative thereof. The additive is used in amounts of 1-10% by weight of the phthalic acid or derivative thereof and includes as derivatives a salt, ester, anhydride, amide, imide, nitrile or an isoindolenine. The examples describe the preparation of copper phthalocyanines from phthalic acid anhydride or dinitrile using as additives diphenylmaleic acid anhydride or dinitrile, diphenylsuccinic acid dinitrile or triphenylglutaric acid dinitrile or mixtures thereof in presence of urea, copper (I) chloride, ammonium molybdate and trichlorobenzene.
Patent GB-2027529-A (GB)
Title: Improved method of evaporative cooling and device
IPC: F25B39/04
Filed: 1978-08-10
Abstract: An evaporative cooling device eg for condensation of a refrigerant comprises a tube nest (I) for holding a fluid to be cooled, the tubing (I) of said tube nest (I) being arranged for permitting the passage of a gas flow induced by a fan 5 through a cooling liquid surrounding the tubing (I) for cooling of the circulating fluid by evaporation of said cooling liquid characterised in that transversely adjacent sections of said tubing (I) are arranged in sufficiently close proximity to each other so that in use of the device the cooling liquid is turbulently maintained by the upward gas flow substantially within a space extending from a level through the tube nest (I) to a level above the tube nest (I) whereby the cooling liquid is continually carried up through the tube nest (I) to a level above the tube nest whereupon the cooling liquid which has not been evaporated falls back into the tube nest (I). <IMAGE>
Patent GB-2007269-A (GB)
Title: Racking Device
IPC: D04B15/94
Filed: 1978-09-22
Abstract: A racking device for rotating a drum 7 in a circular knitting machine, e.g. a patterning drum or a guiding drum within the drum a ratchet 12, a pawl 13 for co-operation with the ratchet and driveable from the knitting machine, and an electromagnet 15 for controlling the pawl. <IMAGE>
Patent GB-2008228-A (GB)
Title: Liquid Flow Valve
IPC: F16K25/04
Filed: 1978-11-02
Abstract: A liquid flow valve has a radially inwardly extending annular valve seat which co-operates with a movable valve closure member having a conical tip (29) and a frusto-conical elastic membrane portion (30). The portion (30) is thin and stretched in that the closure member is stretched over a disc (27) of a valve-operating plunger (34). The membrane portion (30) not only seals against the inner rim of the valve seat, but moves in contact with it during opening and closing of the valve, thus keeping the valve aperture free of deposit of solids, for example lime from hot water. An annular vent 22 communicates with the flow passage immediately downstream of the valve seat to prevent cavitation when the valve is opened. An upstanding flange extends from the outer periphery of the valve seat, the free extremity of the flange being inclined with respect to the valve seat so that its higher portion is adjacent the valve inlet 42.   <IMAGE>
Patent GB-2033640-A (GB)
Title: Bell volume control
IPC: G10K1/064
Filed: 1978-11-02
Abstract: The movement of the clapper 19 in an electromechanical bell can be restricted in order to vary the volume of the sound of the bell. The restriction takes the form of a plastics ribbon 32 or cord, which is looped around the capper rod 18. By tightening the loop of ribbon or cord the movement of the capper rod is reduced and hence the bell volume is reduced. The movement of the clapper is also absorbed by the loop and thus no rattle is transferred to the case of the bell assembly. <IMAGE>
Patent GB-2035774-A (GB)
Title: Apparatus for growing bean sprouts
IPC: A01G31/02
Filed: 1978-12-14
Abstract: A self watering apparatus for home growing bean sprouts includes a housing 10 divided into an upper compartment and a lower compartment by a horizontally positioned divider plate 11 provided with orifices 12. An open top sprout container tray 13 is placed within the lower compartment of the housing, the bottom of the tray 13 being provided with a drainage opening 17. A tilting water container 25 is pivotally mounted in the upper compartment of the housing 10 and collects water from a water supply line at a controlled rate. Each time the volume of water collected in the tilting water container 25 reaches an established amount, the tilting water container 25 discharges the collected water on the divider plate 11 and water drains through the orifices 12 into the open top sprout container tray 13. <IMAGE>
Patent GB-2039306-A (GB)
Title: Method of forming pleated textile material
IPC: D06J1/12
Filed: 1978-12-21
Abstract: A method of forming pleated textile material, which includes pleating the material 10 together with a backing paper 12 in such a manner that some portions 14 of the pleats overlie other portions 16 and 18 of the pleats when the pleats are pressed flat, and applying dye, e.g. by brushing or spraying, to the exposed surfaces of the reverse side of the material whilst the pleats are pressed flat. The dye is selected so that it penetrates the portions 14 of material to which it is applied, thereby to colour the front surface of those portions, whilst not penetrating the material overlain by those portions, to give a decorative effect. In a modification, Figure 3 (not shown), a small gap is left between the folded edges of adjacent portions 14 so that a decorative stripe is formed on each portion 16. <IMAGE>
Patent GB-2012893-A (GB)
Title: Improvements in or Relating to Control Means for Elongate Members
IPC: B62M25/04
Filed: 1979-03-01
Abstract: Apparatus for moving a cable for changing gear in a bicycle hub gear comprises a drum 26 for supporting a cable, a lever 15 movable to an adjusted position against spring 18 to rotate the drum against spring 31 through pawl 24 and teeth 29, 30, and a detent 43 holding the drum in the new position, while the lever 15 returns to its initial position in readiness for a further actuation. The drum can be released to return, one step at a time, to the datum position on depression and release of button 60. <IMAGE>
Patent GB-2044161-A (GB)
Title: Windshield wiper
IPC: B60S1/38
Filed: 1979-03-21
Abstract: In manufacturing a windshield wiper with a blade (3, 4) and a carrier (1) of generally flat rectangular cross-section with a single continuous longitudinal undercut channel to house a rectangular section (3) of the blade, the carrier (1) is moulded, preferably in polypropylene, in situ using the rectangular section (3) of the blade as a core. <IMAGE>
Patent GB-2022361-A (GB)
Title: A telephone set
IPC: H04M1/02
Filed: 1979-03-28
Abstract: A telephone set has two flanges (6, 9) protruding from a cover (1) of the set and positioned on opposite sides of part of the handset (2) when the latter is disposed in the on-hook state of the set. By seizing hold of the two flanges by the hand, the set can be lifted and moved from one place to another. <IMAGE>
Patent GB-2014073-A (GB)
Title: Container top unscrewing tool
IPC: B67B7/44
Filed: 1979-03-29
Abstract: A tool particularly for opening bottles and such like comprises a housing (14) defining a recess (16) for insertion of a bottle cap and a lever handle pivoted to the housing and having a gripping portion (28) which moves progressively across the cross-section of the recess (16) in response to pivoting of the lever handle (10). In use, the bottle cap is gripped clamp-wise between the portion (28) and the opposite side wall portion of the recess (16) and the effort applied in pivoting the lever handle then becomes effective to apply a torque to the bottle cap to overcome the resistance to unscrewing. <IMAGE>
Patent GB-2028083-A (GB)
Title: Machine for harvesting fruit and vegetables
IPC: A01D25/04
Filed: 1979-04-19
Abstract: A beet harvest has two pairs of lifter belts, two adjustably mounted shares 14, a separator device, a herbage discharge belt 8, a sieve chain, a fingered separator belt 10 and a loading elevator. <IMAGE>
Patent GB-2020006-A (GB)
Title: Cabin ventilators
IPC: B60H1/00
Filed: 1979-05-29
Abstract: A force-flow ventilator unit for fitting to a cabin, for example externally of a roof panel (1) of the cab of a dumper truck, comprises a casing (3) with an inlet aperture within which is fitted a coarse first-stage filter (6) of woven metal form and an outlet aperture (9) formed in a baseplate (7) bolted to the panel (1). A self-supporting polypropylene filter bag (10) housed within the casing provides fine second-stage filtration of the air flow through the casing. Two centrifugal blowers (8) disposed within the filter bag (10) draw air through the two filters (6 and 10) and deliver to the outlet aperture (9). From there the filtered air is delivered into the truck cab through an outlet nozzle assembly (11) comprising two directional nozzles (12) of adjustable eyeball type. <IMAGE>
Patent GB-2023787-A (GB)
Title: Electric arc furnace pot
IPC: F27B3/10
Filed: 1979-06-25
Abstract: An electric arc furnace pot which is provided with one tapping lip 6 and at least one clinkering door 8 and a pot upper part 2 and a pot lower part 1 is divided along a parting line 3', 3, 3', the parting line being disposed above the tapping lip 6 to prevent flooding of the parting line in the area of the tapping lip. <IMAGE>
Patent GB-2024911-A (GB)
Title: Buildings
IPC: E04B1/24
Filed: 1979-07-09
Abstract: A building comprises a metal framework (1) concealed in the thickness of the outer walls (6, 9) of the building which comprise opaque or transparent outer panels (6) fixed to the framework (1) by clamping them on elastic joint members (5) by means of adjustable fasteners (8), and opaque inner panels (9) clamped to the framework (1). The building may also include movable transparent outer panels (7) mounted on the framework (1), and internal cladding frames (10) for the glazed openings, which frames are pressed against the framework by a flexible joint (5) acting on the inner face of the glazing. <IMAGE>