baber/WOPTO huggingface dataset:
Patent GB-1197092-A (GB)
Title: Improvements in Gas Turbine Engine Afterburner Fuel Control and Ignition
IPC: F02K3/10
Filed: 1967-09-19
Abstract: 1,197,092. Gas turbine jet engines. GENERAL ELECTRIC CO. Sept. 19, 1967 [Dec. 22, 1966], No.42614/67. Heading F1J. [Also in Division G1] In a gas turbine engine, e.g. a jet or turbofan engine, in which fuel is ignited primarily in a combustion chamber 18, an afterburner is also provided to which fuel is optionally supplied, for combustion, by nozzles 22, the fuel flow being controlled manually, e.g. by the pilot, dependent on the position of a lever 38, and supplied at the controlled rate after the fuel has been ignited at an initial minimum flow rate. The fuel is supplied to the nozzles 22 via a valve 24, pump 26, and metering valve 28 comprising two displaceable parts 30, 32, the former being mechanically positioned dependent on the pressure of the air discharged at 34 from a compressor 16 and the latter by a torque motor 48. The input to the motor is a reference signal which is such that the element 32 is maintained in its minimum flow position, or by the difference in outputs from a thrust demand signal generator 42, indicative of the fuel-to-air ratio demanded by lever 38 and therefore of the required thrust, and from a transducer 50 indicative of the actual fuel-to-air ratio. Generator 42 is controlled by a transducer 40 sensing the position of the lever for positions beyond position y. Between positions x and y the engine is operated in its "dry" mode with no fuel supplied to the nozzles 22, there being no output from the transducer 40 and the valve 24 being maintained closed, the valve part 32 being maintained in its minimum flow position with the motor connected via contact 46 to the reference signal source. When the lever 38 is moved past the position y so that there is an output from transducer 40, the relay controlled valve 24 is opened if the speed of the rotor, sensed by transducer 54 is greater than a set speed, determined by zener diode 55. The fuel is ignited by closing contact 60 provided that the output from transducer 50 does not exceed a predetermined value set by diode 63, indicating the valve part 32 is in its minimum flow position and that the fuel is not already ignited which latter is sensed by photosensitive bridge 70. Finally when the fuel is ignited the contact 46 is moved to connect the motor 48 to the servo system for positioning the valve part 32 dependent of the position of lever 38. In the event of a flame-out resulting in the output from the bridge 70 becoming zero the motor 48 will immediately be connected to the reference signal but the igniter 58 is re-energized when the output from generator 42 is reduced to zero, due to the use of AND latch circuit 74. Thus the fuel can be re-ignated if the pilot moves the lever 38 past y and then back again or alternatively if he opens and subsequently closes switch 75, either of which operations will restart the above cycle of operations.
Patent GB-932673-A (GB)
Title: Improvements in or relating to methods of manufacturing articles bearing an engraved design of a decorative or informative nature
IPC: B44C1/22
Filed: 1960-12-12
Abstract: 932,673. Ornamenting. GENERAL ELEC. TRIC CO. Ltd., and J. H. W. SMITH. Sept. 28, 1961 [Dec. 12, 1960], No. 42708/60. Class 93. An article bearing an engraved design of a decorative or informative nature is made by adhering a metal foil to a non-metallic backing member, treating it to remove part of the foil in order to define the design, the method including the steps of forming a pattern in a resist on the outer face of the foil so that all but said part of the foil is covered by the resist, chemically removing said part of the foil, coating with paint at least part of the surface of the backing member which is exposed when said part of the foil is removed, and removing any surplus paint from the outer face of the remainder of the foil after the paint has dried. As described, a copper foil is stuck to a rectangular sheet of laminated paper board impregnated with a phenolic resin, and the exposed surface is sprayed with a resist designed to harden on exposure to ultra-violet light. A photographic positive of the desired design is prepared and placed on the resist coating and the assembly subjected to ultraviolet radiation. The unhardened parts of the resist are removed by a vapour degreaser e.g. trichloroethylene, and the unprotected parts of the copper foil etched with ferric chloride. The remainder of the resist is removed by rubbing with a cloth soaked in trichloroethylene, and the parts of the backing member exposed by the etching is coated with paint e.g. a cellulose paint. Any paint which overlaps on to the surface of the copper foil is removed, and the treated sheet immersed in a solution of ammonium hydrosulphide to form a protective coating of copper sulphide on the foil. Other treatments include treatment with selenious acid, or electroplating. The sheet is then treated e.g. by spraying with a transparent lacquer.
Patent GB-1017935-A (GB)
Title: Copolyamides and a method for the preparation thereof
Inventor: KOHNO TAKUYA
IPC: C08G69/36
Filed: 1962-11-12
Abstract: A method of preparing a copolyamide comprises reacting a dibasic acid and an equimolar amount of piperazine, 2:5-dimethyl piperazine and/or 2-methyl piperazine with epsilon-caprolactam, the ratio by weight of acid and diamine to lactam being 5:95 to 20:80.  Specified acids are adipic, terephthalic and/or isophthalic acid.  Organic dyestuffs may be added to the products.
Patent GB-1075576-A (GB)
Title: Improvements in machines for building pneumatic tyres
IPC: B29D30/24
Filed: 1964-10-21
Abstract: 1,075,576. Tyre building apparatus. PNEUMATIQUES, CAOUTCHOUC MANUFACTURE ET PLASTIQUES KLEBERCOLOMBES. Oct. 21, 1964 [Oct. 29, 1963], No. 43027/64. Heading B7C. A tyre building drum comprises a fixed and a movable end plate 12, 13 each having an external diameter less than the internal diameter of the beads 63, 64 of the tyre to be assembled and holding the edges of superposed flexible diaphragms 15, 16 which, when the end plates are spaced apart, form a cylindrical tyrebuilding surface. The inner diaphragm 15 is reinforced by inextensible circumferential elements which limit the diameter of the cylindrical surface and encloses an inner chamber having an air inlet 54, and the diaphragm 16 is radially expansible and encloses an outer chamber having a set of fluid inlets 55. The circumferential elements may be in the form of separate rings or the turns of a cylindrical coil. The diaphragm 15 may be reinforced by longitudinal elements along the whole of its length or in its shoulders 15 only. The shoulders 15 may alternatively be reinforced by bias-cut fabric or with extra rubber. Radial expansion of the diaphragm 16 may be limited by axially inextensible reinforcing elements. Operation.-After a carcass has been built up on the cylindrical surface air is admitted through inlets 55 to expand the diaphragm 16. If the carcass shaping so effected is insufficient, plate 13 is moved towards plate 12 by a doubleacting pneumatic or hydraulic jack 14 whose movement is limited by an adjustable stop member 46. After shaping a ring 51 may be rotated to allow fingers 50 to enter holes 53 and fluid is then admitted through inlet 42 to retract the jack 14 until the plates 12, 13 are at their maximum spacing (Fig. 3, not shown). Removal of the finished tyre is thus facilitated. Alternatively, air may be evacuated from the inner and outer chambers while the plate 13 is in the dot-dash position of Fig. 1 to facilitate tyre removal.
Patent GB-1080059-A (GB)
Title: Device for transforming vibration measurements particularly in dynamic balancing machines
IPC: G01M1/22
Filed: 1964-10-23
Abstract: 1,080,059. Measuring rotary unbalance electrically. W. & T. AVERY Ltd. Oct.23, 1964 [Feb.8, 1964], No.43243/64. Heading G1NA rotary unbalance transducer 2 supplies a signal which is amplified at 3 and multiplied in Hall plate devices 4, 5, with two signals of the same frequency, which are displaced in phase by 90‹, from a reference generator 1 on the rotor shaft, the output of the multipliers 4, 5, being stored at 6, 7, to give two D. C. signals which are amplified at 11, 12, and fed to a second pair of Hall plate devices 8, 9 controlled by two auxiliary signals offset by 90‹ from an auxiliary signal generator 10, (the frequency of which may be selected irrespective of the frequency of rotation of the rotor), the output of these multipliers 8, 9 being vectorially added to indicate at 18 the magnitude of the unbalance. A body 20 under test, is aligned with the measured unbalance by having its angular position measured, in terms of the rotor output signal of a resultant field device 13 the two field windings of which are excited from the auxiliary frequency generator 10, the rotor output being compared in a phase sensitive detector 16 with the unbalance signal 18, obtained from the signals stored at 6, 7. Any angular difference between the position of the body 20 and the measured unbalance produces an output 19 which drives a motor 14 to reposition the body 12. The extent of the drilling subsequently carried out may be controlled by the magnitude of the signal measured at 18.
Patent GB-959752-A (GB)
Title: Improvements in devices for bending bars
IPC: B21D5/02
Filed: 1962-11-15
Abstract: 959,752. Angular bending. H. WIRTH. Nov. 15, 1962 [Nov. 18, 1961], No. 43305/62. Heading B3E. A device for bending flat bars comprising two abutment members 1 against which the flat bars 6 bear and which are disposed at a distance from one another with their axes 4 parallel to one another and which are rotatable each around its respective axis 4, and a ram 2 adapted to move in the plane of symmetry of the said two axes is characterized in that the ram 2 has an edge 3 extending parallel to the said axes 4 and the abutments 1 are in the form of prisms of triangular or square cross-section. The ram 2 may be moved by an hydraulic cylinder 7. By fitting a flat cap 9, Fig. 4, on the ram 2 the device may be used to straighten a bent bar 6. The distance between the axes 4 may be adjustable. In a modification, Fig. 5, a head 8 carrying the prisms 1 is mounted on a plate 11 extending from a base 10 and is further held by a cross-beam 13 mounted on side members 12 pivoted to the base 10 at 14 swung up by a handle 16 and locked in position by a rod 15. A pump 18 for the cylinder 7 may be hand or motor driven. A scale 20 on one prism 1 may be provided.
Patent GB-992890-A (GB)
Title: Box for dispensing pastilles and the like
IPC: B65D83/04
Filed: 1963-11-04
Abstract: 992,890. Boxes for dispensing pastilles. CHIMIE ET ATOMISTIQUE. Nov. 4, 1963 [Nov. 14, 1962], No. 43392/63. Heading B8P. A box for dispensing pastilles comprises a wheel 6 having pastille receiving notches 7 which are brought successively into alignment with an aperture 13 as the wheel rotates. The wheel is controlled by a knob 10, the spindle 9 of which extends through a hole 11 in the bottom of the box and a hole 8 in the wheel 6 and is then burred over. The knob 10 has a boss 15 which engages recesses 16 in the bottom of the box so that the wheel 6 can be rotated stepwise and to prevent reverse rotation of the wheel The lid 3 of the box is preferably transparent.
Patent GB-902324-A (GB)
Title: Reversing mechanism for type impression machines
IPC: B41J33/516
Filed: 1960-12-16
Abstract: 902,324. Ink-ribbon mechanisms. VERWALTUNGSGESELLSCHAFT DER WERKZEUGMASCHINENFABRIK OERLIKON. Dec. 16, 1960 [Dec. 16, 1959], No. 43426/60. Class 100 (4). An automatic ink-ribbon reversing mechanism comprises a pair of spools 15, 16 with associated gears 10, 11 mounted on a two-position holder 13 rockable by the action of cams 25, 26, so that the gears 10, 11 are alternatively in engagement with the worms 7, 8 on a continuously rotating shaft 5 which effects the changeover by an axial movement caused when the spools and gears are unable to rotate. The exhaustion of the ribbon prevents rotation of the gears 10, 11 and the drive to the axial shaft 5 causes it to axially move, and by means of detent arrangement 19-22, it moves into a second position where the other cam engages the stop surfaces 26, 27 to rock the holder 13. In an alternative embodiment to shaft 5 may rock and the holder 13 remain stationary.
Patent GB-937457-A (GB)
Title: Apparatus for separating blanks from the bottom of a stack
IPC: B65H3/12
Filed: 1960-12-19
Abstract: 937,457. Feeding sheets. UNIVERSAL CORRUGATED BOX MACHINERY CORPORATION. Dec. 19, 1960 [June 10, 1960], No. 43598/60. Class 100 (1). The bottom blank of a stack of blanks S of corrugated board is separated by a perforated conveyer belt 34 arranged to travel over a suction chamber 37, the front portion of the blank being sucked against the belt and moved under an adjustable gauge means 123 to abut a registration stop 86 which is raised by means actuated from an associated printing &c. machine to allow the blank to be removed by the belt. The feeding unit is mounted on a frame 31, and comprises spaced rollers 32, 33 carrying the perforated endless belt 34 which is encompassed by the suction chamber 37, the latter being connected through a duct to a suction unit 39. The major part of the upper run of the belt 34 is supported by a plate 30, and the part adjacent the gauge and stop means is supported by idler rollers 36, whereby only the front portion of the bottom blank can be sucked against the belt. As shown, the stack of blanks 5 is staggered, and only the front part of the stack rests on the belt 34. The rear ends 64 of the blanks rest on rollers 63 carried in units 53 which are adjustably secured to an elongated rectangular member 52 which can be adjusted along the frame 31, by rack and pinion means 41, 46 operated by a hand wheel, to suit the length of blanks. There are three units 53, comprising two end ones which carry guides 65 to hug and register the sides of the stack, and a centre one which, in the case of box blanks, may have a forwardlyprojecting finger which engages in slots in the rear edges of the blanks to assist registration. The front edges 64<SP>1</SP> of the blanks S abut two spaced members 71 supported on two crossrods 66, 67. Each member 71 comprises a triangular frame which can be adjusted vertically by a knob 121, and the lower edge 123 of the frame forms a gauge which allows only one blank to be separated by the belt 34. An endless belt 131 mounted on pulleys is guided along the rear face of the frame so that it can engage the edges of the uppermost blanks; the belt is driven from a shaft 142 in a direction to urge the blanks towards the belt 34. Each member 71 carries a pivotally mounted lever 85 which has a depending stop 86 normally urged into contact with the belt 34 by a spring. The lever 85 and stop 86 is lifted periodically from the belt 34 to allow the passage of a blank, by an air cylinder and piston arrangement 93 which is controlled by a switch 158 operated by a cam 156 mounted on the shift of a printing roller 155<SP>1</SP> associated with the feeder unit. The separated blanks are fed to the printing machine by rollers 154, 155. In a modification (Fig. 11, not shown), the lever 85 and registration stop 86 is lifted by a mechanical linkage operated by a cam which is driven by gearing from the shaft of the printing roller.
Patent GB-1255450-A (GB)
Title: Improvements in and relating to brakes
Inventor: KLAUE HERMANN
IPC: F16D55/14
Filed: 1970-09-15
Abstract: 1,255,450. Multiple-disc disc brakes. H. KLAUE. 15 Sept., 1970 [27 Dec., 1969], No. 43914/70. Heading F2E.  In a disc brake where two pairs of (semicircular) brake shoes 9 1 , 9 2 , 11 1 , 11 2  are forced outwards, on braking, into contact with the inner annular surfaces of two portions 6, 7, of a ring secured to a drive flange 4, rotating with a wheel (not shown), the brake shoes co-operate with one or more fixed members which permit axial movement but prevent circumferential movement, and the brake - shoe operating means include bearings 17 on both sides through which the brake clamping forces are transmitted. As shown, the brake shoes, with respective friction linings 10 1 , 10 2 , 12 1 , 12 2 , are forced apart by relative rotation of rings 18, 19, having ramps co-operating with balls 20. Each ring 18 or 19 accommodates, in a track formed in it, a row of ball bearings 17. Preferably outside each ring 18 or 19 is located a thrust ring 15 or 16 which provides the outer track for the ball bearings and is in contact, respectively, with the adjacent brake shoes. The thrust rings are interconnected by pull-off springs 27, Fig. 1. Each brake shoe and each thrust ring has a shoulder engaging part of one of two brackets 2, 3, fixed to the axle casing 1 of the wheel assembly, Figs. 2 and 1; shoes 9 1 , 9 2 , are coupled by shackles 13 1 , 13 2 , Fig. 2, and shoes 11 1 , 11 2  similarly. Actuation of rings 18, 19, for brake application is by a pair of hydraulic piston and cylinder devices 21, 22, which co-operate with lugs 19 2 , 18 2 , on rings 19, 18, respectively, Fig. 2. Alternative, mechanical, actuation (e.g. from a handbrake lever) is by cable 25, toggle lever 26 and pull rods 27, 28, Figs. 4 and 2. To enable rings 18, 19 to be withdrawn or inserted radially, each may be made in halves, e.g. 41, 42, Fig. 8, abutting on a diameter, and in this embodiment both radially outer and radially inner sets of ball bearings 47, 48, are provided. Also each thrust ring is made in halves, e.g. 43, 44, Fig. 8, the diameter on which they abut being angularly offset from that for the halves 41, 42. Each thrust ring half has shouldered projections 43 1 , or 44 1  to engage fixed flange 39 or 40 respectively. Pull-off springs 45 are anchored where shown on thrust-ring halves 43, 44. Instead of ball bearings 17, 47, 48, roller bearings (not illustrated) may be provided.
Patent GB-1528168-A (GB)
Title: Hydrodipyrano-phthalazine compounds
IPC: C07D491/16
Filed: 1975-10-27
Abstract: 1528168 Dipyranophthalazines CHEM PHARMAZ FABRIK DR HERMANN THIEMANN GmbH 27 Oct 1975 [5 Nov 1974] 44019/75 Heading C2C The invention comprises compounds of the formula where R 1  is H or alkyl, R 2  is H, Cl or Br, R 3  is H, Cl, Br, alkoxy or benzyl with the provisos that R 3  is H or benzyl if R 2  is H, R 3  is Br or alkoxy if R 2  is Br and R 3  is Cl or alkoxy if R 2  is Cl, or R 2  and R 3  together form the substituent where R 4  is H, halogen, CF 3 , alkyl, alkoxy, alkylenedioxy, nitro or optionally substituted amino, the 4,4<SP>1</SP> bond is saturated or unsaturated, and acid addition salts thereof. The term alkyl in the substituents R 1  and R 4  and as a moiety in the substituents R 3  and R 4  means a group having 1-6 carbon atoms. The compounds are prepared by reacting a compound of the formula with hydrazine or an acid addition salt thereof to yield a compound of the formula  after which the substituents R 2  and R 3  may be introduced by chlorination or bromination to give the tetrahalo compounds which may be reacted with a metal alkoxide to give the dihalo dialkoxy compounds, or the compound of Formula IV may be reacted with an optionally substituted benzaldehyde to give the dibenzylidene compounds and/or the 4,41- unsaturated bond may be reduced, after which the phthalazine compounds may be converted into acid-addition salts thereof. Compounds wherein R 3  is benzyl may be prepared by reduction of the corresponding benzylidene compounds. The compounds may be used in pharmaceutical preparations and have activity on the cardiovascular and central nervous system.
Patent GB-928656-A (GB)
Title: Process of preparing cellular materials
IPC: C08K5/14
Filed: 1961-12-11
Abstract: A process for preparing cellular material from normally solid thermoplastic aliphatic olefin polymers comprises homogenizing the polymer with at least one normally solid blowing agent and a cross-linking agent and heating the homogeneous composition in a mould at a temperature of from 80 DEG  to 250 DEG C. at which the blowing agent decomposes to liberate the gas producing the blowing action. Preferably the polymer is a polyethylene of molecular weight 50,000 to 300,000, obtained by the lowpressure process, or 10,000 to 40,000 produced by the high-pressure process. p,p1-Oxy-bis(benzene-sulphohydrazide, azodicarbamide or dinitrisopentamethylene tetramine are preferred blowing agents. The cross-linking agents are defined as peroxides, hydroperoxides or their esters or mixtures thereof.  A pressure exerted from outside by an inert gas or vapour can be used to prevent the gas developed by the blowing agent from leaving the material.  Zinc, magnesium, calcium, cadmium and butyl stearates are specified as additives to retard the expansion and give more homogeneous cell distribution.ALSO:A process for preparing cellular material from normally solid thermoplastic aliphatic olefin polymers comprises homogenising the polymer with at least one normally solid blowing agent and a cross-linking agent and heating the homogeneous composition in a mould at a temperature of from 80 DEG C. to 250 DEG C. at which the blowing agent decomposes to liberate the gas producing the blowing action.  Preferably the polymer is a polyethylene of molecular weight 50,000 to 300,000 obtained by the low pressure process or 10,000 to 40,000 by the high-pressure process p, p1- oxy-bis (benzene-sulphohydrazide), azodicarbamide or dinitrosopenta-methylene tetramine are preferred blowing agents. The cross-linking agents are defined as peroxides, hydroperoxides or their esters or mixtures thereof.  A pressure exerted from outside by an inert gas can be used to prevent the gas developed by the blowing agent from leaving the material.  Stearates of zinc, magnesium, calcium and cadmium and butyl steorate are specified as additives to retard the expansion and give more homogeneous cell distribution.