baber/WOPTO huggingface dataset:
Patent GB-627167-A (GB)
Title: Improvements in and relating to the production of resinous compositions of matter, and the products resulting therefrom
IPC: C08G12/38
Filed: 1947-07-16
Abstract: An initial aqueous mixture of a first portion of urea and formaldehyde containing more than 2.25 (preferably not more than 10) of formaldehyde per mole of urea is heated under acidic conditions until equilibrium is reached (shown by the attainment of maximum viscosity); it is then neutralised with alkali, and a second portion of urea added in one step in sufficient amount to give the desired formaldehyde/urea ratio.  It is then heated further as desired, and dehydrated to give the product the desired water content.  Part of the first portion of urea and/or the whole or part of the second portion may be replaced by an equivalent amount of thiourea and/or melamine.  In examples (1) 1 mole. urea and 2.5 moles. formaldehyde, pH3, are refluxed for 30 minutes, the pH is then adjusted to 7.5 by sodium hydroxide, 0.25 mole. of urea is added and the mixture dehydrated under reduced pressure to a viscosity of 35 poises at 25 DEG  C.  Admixture with a hardener such as ammonium chloride provides an adhesive suitable for hot or cold press bonding of plywood.  In other examples: (2) 1 mole. of urea and 4 moles. of formaldehyde are initially reacted and 1 mole. of urea added later; (3) 90 gms. of urea and 30 gms. of thiourea reacted with 410 gms. of 37 per cent formalin and 30 gms. of urea added later; (4) 105 gms. of urea and 15 gms. of melamine reacted with 410 gms. of 37 per cent formalin and 30 gms. of urea added later; (5) 90 gms. of urea and 30 gms. of melamine reacted with 410 gms. of 37 per cent formalin and 30 gms. of urea added later; (6) 75 gms. of urea and 45 gms. of melamine reacted with 410 gms. of 37 per cent formalin and 30 gms. of melamine added later. The products may be used as glues, adhesives with the usual hardener, and in lacquers or moulding compositions.  Specification 345,935, and U.S.A.  Specification 2,019,453 are referred to.  The Provisional Specification describes also the inclusion in the reaction mixture of primary aliphatic alcohols having one to four carbon atoms, and the removal of water from the mixture by azeotropic distillation.
Patent GB-967352-A (GB)
Title: Production of unsaturated aliphatic acids
Inventor: GASSON EDWARD JAMES
IPC: C07C51/02
Filed: 1962-05-17
Abstract: Acrylic or methacrylic acids are prepared by heating the ammonium salt of the acid in solution or suspension in an inert liquid organic medium with a boiling point or minimum boiling point under the reaction conditions not lower than 80 DEG C.  Benzene, toluene, ethylbenzene or a xylene are mentioned as solvents, and the condensable distillate is refluxed during the heating. Ammonia is evolved and the free acid recovered by extraction or distillation.
Patent GB-1463705-A (GB)
Title: Sliding clasp fastener having thermoplastic resin component parts
IPC: E01C19/21
Filed: 1974-05-01
Abstract: 1463705 Sliding clasp fasteners YOSHIDA KOGYO KK 1 May 1974 [8 May 1973] 19007/74 Heading E2S In a sliding clasp fastener having a component part, or parts, comprising opposed rows of interlockable fastener elements or teeth and/or top end stop and/or bottom end stop and made of thermoplastic resin material, e.g. polyethylene, polypropylene, P.V.C. and the like, and which is, or are, disposed at corresponding one faces of a pair of oppositely disposed stringer tapes, such as 10, of a warp knitted structure including wales 15, the thermoplastic resin material, of which said part, or parts is, or are, made, extends into, and through, the interstices between adjacent threads of the structure and reaches the wales of the structure at the corresponding other faces of the tapes, thereby filling the interstices and creating a firm and stable bond between the tapes and the component part. As shown, each tape 10, with a thermoplastic edge strip 17, comprises a warp-knitted structure consisting e.g. of wale-forming threads or chain stitches and transverse laid-in stitches, a row of interlocking fastener elements E, made of thermoplastic material such as polyethylene, polypropylene, or P.V.C., being attached to the flat side of the tape by means of extrusion, or injection, so that the molten plastics material of the elements E and the strip 17 penetrates through, and fills, the interstices 13 between the knitted warp threads 14 and forms an integral bond with the wales 15 on the reverse side 16 of the tape 10. Conventional top and bottom end stops 18, 19, Figs. 3, 5 respectively, are secured to the tapes in a similar manner, the stops also being fused to the fastener elements E which are stitched to the respective tapes. In an alternative arrangement, Figs. 7, 8 (not shown) a conventional separable bottom end stop (20) including pin (20a) and a base member (20b) and a thermoplastic film (21) are secured to the tapes (10), in a manner similar to that described above, to effect a unitary bond between the thermoplastic material of the film and an end stop (20) with the tapes (10).
Patent GB-651332-A (GB)
Title: Improvements in or relating to the manufacture of fruitcontaining products
IPC: A23L25/00
Filed: 1947-07-16
Abstract: The nut meat and fruit paste made in accordance with Specification 647,894 is dried, and the dried paste is then broken by cutting, cracking, or stamping.  Before drying, the paste may be sheeted through rollers, the sheets cut into strips, the strips dried in a tunnel drier, and then broken in a rotary hammer mill to irregular glass-like fragments.  When dispersed in bakery products, the particles do not ferment, lose colour, streak when cut or become detached from the dough base.  Examples are concerned with mixtures of coconut meat from which at least 70 per cent of the oil and the flavour have been removed with dried white figs, or the fig product according to U.S.A. Specification 2,157,485, sugar, cherry jam, salt and colour, and with fig jam, raisin jam, sugar and invert sugar.
Patent GB-250450-A (GB)
Title: An improved vehicle course indicating device
IPC: B60Q1/34
Filed: 1925-07-27
Abstract: 250,450. Grassi, R. July 27, 1925. Order apparatus. - An electrically-operated direction indicator for vehicles comprises a metal box 1 housing a spring 2 geared to an indicating arrow 12 on a shaft 11 also carrying fast therewith a cam-disc 57 having a projection coacting with teeth 32, one tooth on each armature 28, 29. 30, 31 of fixed electromagnets 24 - - 27 corresponding to " left," " stop," " right," and " rest " positions of the arrow 12. The magnets are operated from inter-connected electric circuits which include four contact buttons, so that on depression of any button all the magnets are energized, lowering their teeth 32, except that one corresponding to the sign on the contact button depressed, whereby the arrow rotates until arrested in the required position by the unlowered tooth 32 on the armature of the unenergized magnet. The arrow is illuminated by a lamp 18. When the arrow is in a position other than " rest " one of three lamps is lit as a checksignal to the driver.
Patent GB-646010-A (GB)
Title: Improvements in or relating to electrical servo systems
IPC: G01S13/68
Filed: 1946-06-26
Abstract: 646,010. Automatic control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 26, 1946, No. 19167. Convention date, Dec. 30, 1944. [Class 38 (iv)] In an electrical servo system for producing and utilizing an A.C. displacement signal, hunting is prevented by combining the signal with a replica thereof which has been delayed by n/2 cycles, n being an integer. A C.W. or modulated signal produced at 1 is switched by a synchronous motor 15 to alternate between left and right directive aerials 7, 5 with 60- cycle frequency. The aerials 7, 5 are driven into line with a target by a motor 13 energized by the same 60-cycle supply and by the 60- cycle component of the reflected signal received at 23, detected at 21 and amplified at 19. The output from the detector 21 is passed through a phase invertor 33 and one component of it is applied to the grid of a valve 37 and a second component, 180 degrees out-of-paase, is fed through a one-cycle delay network 45 and mixed with the first component, the resultant being applied to the grid of a valve 41. One or more further resultant signals may be obtained by using further invertors 42 and delay networks 451, the outputs from all the valves 37, 41, 49 being combined to provide the signal fed to the amplifier 19. To avoid the use of valves 37, 41, 49 and the further phase invertors, the delay networks may be connected in series, Fig. 7 (not shown), and the output from the anode of the invertor and from each delay network passed direct to the amplifier 19 through a variable resistance. In a further modification, Fig. 8, the output from the detector 21 is added to a component which is delayed at 61 by half a cycle, the resultant being fed to the amplifier,
Patent GB-1007694-A (GB)
Title: Device for grinding a group of lens-like quartz resonators
IPC: B24B13/02
Filed: 1964-05-08
Abstract: 1,007,694. Grinding. M. N. KOGAN and S. N. KIBIREV. May 8, 1964, No. 19208/64. Heading B3D. [Also in Division H1] A device for grinding a group of lens-like quartz resonators 16 with a double-convex or plano-convex surface comprises a rotatable lap 2 having a concavo-spherical grinding surface exposed upright, and a holder which maintains the blanks in contact and consists of an eccentric ring 4 loosely placed on the grinding surface, a cylinder 11 in the opening in the ring for pressing the blanks against the surface by means of an annular part 13, and a control rod 14 within the cylinder and resting on the grinding surface for preventing the blanks from emerging from under the annular part, the holder being movable in a hole 21 in a mount 17 disposed above the lap. The grinding surface 3 has a radius of curvature equal to that to be formed on the resonators 16. The ring 4 has a surface 5 having the same radius of curvature as the grinding surface and has an eccentric bore for receiving the cylinder 11, the lower portion of which has an annular part 13 of low abrasive material for pressing the blanks 16 against the grinding surface. The rod 14 extends through a bore in the cylinder 11 to retain the blanks beneath the part 13. The ring 4 is loosely received in the hole 21 in the mount 17 which is vertically and horizontally adjustable. The surface of the lap may be of soft metal, such as bronze, and is automatically lapped with the surface 15 of the ring which is of harder material such as steel. In operation, a number of blanks, e.g. eight, are placed under the part 13 and a pump is started to deliver a grinding suspension to the surface of the lap. During rotation of the lap, ring 4 rotates in the hole 21 of the mount, cylinder 11 rotates at a lower speed in the ring, and the blanks 16 rotate about their own axes because of the speed difference at opposite points of the blank. Upon grinding one surface, the blanks are provided with a piano-convex form. The blanks may then be inverted and a cylinder having an annular part formed with a concave form used to press the blanks against the lap to provide them with a double-convex form.
Patent GB-997815-A (GB)
Title: Improvements in lift bridges
IPC: F16D63/00
Filed: 1962-05-21
Abstract: 997,815. Bascule bridges. V. E. MACY and E. F. ALLEN. May 21, 1962 [May 29, 1961], No.19471/62. Heading E1G. [Also in Divisions F1 and F2] A bascule bridge 2, Fig. 1, is raised and lowered about a pivot 3 on an abutment 5 by a hydraulic drive system (Division F1) having a pair of piston and cylinder devices 7, 10 connected to a pivot 11 on the bridge and a fixed pivot 8. A brake is associated with each device and is normally engaged to retain the bridge in its raised or lowered position and is released by hydraulic pressure when the bridge is to be raised or lowered. A counterweight 6 is provided to reduce the effort required to move the bridge. In another embodiment, a bridge 103, Fig. 7, without a counterweight, may be raised or lowered by a pair of hydraulic cylinders 100, 101 connected together at a pivot 106 and to a pivot 102 on the bridge and a fixed pivot 104. A third hydraulic cylinder 105 is connected to the pivot 106. One or other of the cylinders 100 or 101 may be replaced by a solid linkage. Specification 997,816 is referred to.
Patent GB-813061-A (GB)
Title: Driving mechanisms for lathes or other like machine tools
Inventor: FIRTH ARTHUR JOSE
IPC: B23Q5/14
Filed: 1956-06-25
Abstract: 813,061. Lathe-details. COLCHESTER LATHE CO. Ltd. June 17, 1957 [June 25, 1956], No. 19566/56. Class 83 (3). A driving mechanism for a lathe or like machine tool comprises a power input shaft 3 parallel with the work spindle 2, a countershaft 9, a speed-reduction gear 10 slidable on the countershaft and engageable with pinions 5, 11 on the input shaft and spindle respectively, and a pulley 12 secured to the main spindle connected by a belt with a pulley 6 on the input shaft, this pulley being engaged with the shaft by a clutch 7. The latter also engages the gear drive when moved in the opposite direction. A belt drive and a toothed drive are also provided for transmitting motion from the above mechanism to a feed gear-box 14. The former includes a pulley 21 on the spindle, a belt 24 and pulley 22 engageable with the gear-box by a clutch 27, and toothed wheels 23, 25. The gear drive is from a wheel 15 on the countershaft, through gears 16-20 and clutch wheel 25.
Patent GB-348442-A (GB)
IPC: B01D3/10
Filed: 1930-06-27
Abstract: <PICT:0348442/III/1> Liquids easily decomposed by heat are distilled at low temperatures under vacuum in an air-tight receptacle 1 containing a coiled tube or channel 2 along which the liquid flows while being heated by heating media circulated through a pipe 5, the vapours evolved passing through perforations 4 and being condensed on the surface of a condenser 3 the superficial area of which is larger, preferably to the extent of five or six times, than the area of the evaporating surface.
Patent GB-666527-A (GB)
Title: Improvements in or relating to television pick-up tubes or the like
IPC: H01J31/34
Filed: 1949-07-26
Abstract: 666,527. Cathode-ray tubes. CINEMATELEVISION, Ltd.; and FREEMAN, G. S. P. July 24, 1950 [July 26, 1949], No. 19600/49. Class 39 (i). A television pick-up tube comprises in combination a target electrode in the form of a thin semi-conducting layer which carries on one side thereof a photo-sensitive mosaic and is adapted to be scanned on the other side thereof with a low velocity scanning beam and a planar capacitative electrode in the form of a substantially transparent conducting film, positioned in close proximity to said target on the mosaic side thereof. As shown, a pick-up tube comprises an envelope 1 containing an electron gun 2, a solenoid 3 for focusing, and scan coils 4. The target consists of a diaphragm 5 of a semiconductor, such as glass or aluminium oxide suitably treated, which is sufficiently thin to enable electrical charges to leak from one face to the other in less than one frame period. One face of the target is scanned by the scanning beam and on the other face is deposited a mosaic 6 of photo-sensitive material which receives illumination through the flat window 7 at the end of the tube. On the inner face of the window, and mounted in close proximity to the target assembly is a capacitative electrode 8 consisting of a transparent conducting film. When light is focused on the mosaic elements, which will be the action of the low velocity scan have reached a potential near to that of the electron gun cathode, photo-electrons are emitted and are collected on the electrode 8, which is maintained slightly positive with respect to the gun cathode. It is stated that by a suitable choice of voltage for electrode 8 it can be ensured that even under the brightest illumination the secondary emission caused by the impact of the scanning beam never reaches a value greater than unity, and the unstable condition arising when a tube suddenly receives brilliant illumination is prevented. The position of the target relative to the electrode 8 may be adjustable by mechanical means, as described in Specification 666,526.
Patent GB-1140902-A (GB)
Title: Flow control valve and fuel injection system
IPC: D04H1/00
Filed: 1965-02-26
Abstract: 1,140,902. Valves. PETROL INJECTION Ltd., and H. E. JACKSON. 18 Feb., 1966 [26 Feb., 1965], No. 19632/68. Divided out of 1,140,901. Heading F2V. [Also in Divisions F1 and G3] The disclosure corresponds with that of Specification 1,140,901 but the claims relate to a fuel metering valve actuated by a vacuum pressure under the control of a pilot valve responsive to variations in the pressure level at the vacuum source.
Patent GB-351255-A (GB)
Title: Improvements relating to sound reproducing instruments
IPC: H04R11/00
Filed: 1930-06-27
Abstract: 351,255. Loud-speakers. WILLSON, H. C., Walton, Beckminster Road, Wolverhampton. June 27, 1930, No. 19658. [Class 40 (iv).] A magnet system for a telephone receiving - instrument comprises polepieces which are rigidly cast or moulded in position in a non-magnetic support, the polar faces being formed by a cutting operation through the polepieces after the latter are fixed in position. The polepieces consist of two steel stampings, Fig. 3, bent in opposite manner and secured in a die-cast base a of non-magnetic material by means of dovetailed feet b, b<1>, h, h<1> and countersunk recesses. The bent stampings comprise portions c, c<1> .. g, g<1>, the central vertical portions e, e<1> being cut through to leave air gaps l, l<1>, thus producing four poles between which the speech coil k, Fig. 2, is mounted. Two permanent magnets are clamped against the parts c, c<1>, f, f<1> by means of screws in tapped lugs projecting upwards from the base a. The reed o consists of a stamping which is reduced in thickness at a slotted part r to produce the required natural frequency. Near its fixed end the reed o is clamped by means of a nut x and screw w on a plate u, which rests on the upper convex end of a pillar v, so that the position of the reed may be adjusted, under the control of a compression spring z, by means of a screw y.
Patent GB-477921-A (GB)
Title: Improvements in connection with electrically driven erasing machines
IPC: B43L19/00
Filed: 1936-07-15
Abstract: 477,921. Erasers. HALL, B. F., and HALL & CO., Ltd., B. J. July 15, 1936, No. 19667. [Class 146 (iii)] An erasing-device comprises an electric motor D in a casing A, a fan B mounted on the rear end of the motor spindle E within the casing, an annular opening a<1> in the rear of the casing through which the spindle projects to permit air to be sucked therethrough by the fan, and an annular opening a<2> at the front of the casing, through which the chuck F carrying the eraser f<1> projects, and which is sufficiently large to permit the current of air drawn into the motor to be blown out through the opening, and thus blow away debris from the eraser.
Patent GB-238378-A (GB)
Title: Improvements in or relating to the grinding of cutlery
IPC: B24B19/00
Filed: 1924-08-20
Abstract: 238,378. Atkins, H. F., and British Cutlery Research Association. Aug. 20, 1924. Cutting-edges, shaping and treating.-Cutlery blades having a straight main cutting edge and a curved edge at the point, for example, the blades of pen knives, are ground by the flat face of a grinding-wheel g, the blade e being moved by a slide a in the direction of the edge to grind the body of the blade, and being swung about the axis k of a spindle k<1> to grind a conical form at the point, the base of the conical part being tangential to the edge, and the curved surface of the cone being tangential to the surface of the body of the blade. The slide a is movable on guides a<1> until it reaches a stop h, the slide being moved by a bar d through a spring f. The blade e is mounted on a holder b pivoted by the spindle k to a carrier c on the slide, and when the slide encounters the stop h the bar d moves, with extension of the spring, relatively to the axis k and by its connection with an arm l on the spindle K<1> and the holder b, moves this about the axis k which is inclined and situated to give the required conical form to the point of the blade. The carrier c may be adjusted about a longitudinal axis to vary the angle at which the blade is presented to the grinding-wheel, and the blade may be ground of concave or convex cross-section by grinding on the outer or inner edge of the grinding-wheel.
Patent GB-275960-A (GB)
Title: Improvements in and relating to coating by deposting emulsified japan ingredients
IPC: B05D1/36
Filed: 1927-07-26
Abstract: 275,960. British Thomson-Houston Co., Ltd., (Assignees of Chislet, H.). Aug. 16, 1926, [Convention date]. Coating processes.-The disperse phase of an aqueous emulsion of japan forming ingredients is deposited on the surface of a solid by forming a drv film of electrolyte on the solid and bringing it into contact with the emulsion, as by dipping. The process is particularly applicable to coating metal or other objects with a water japan such as is described in Specification 121.533. In a preferred method a solution of alkali such as caustic soda or potash, or of various salts such as sodium chloride, is allowed to dry on the surface, and the surface dipped into the emulsion, whereby the disperse phase of the emulsion deposits on, and adheres to, the surface.
Patent GB-1064345-A (GB)
Title: Process of lubricating and sealing roller bearings
IPC: F16C33/76
Filed: 1965-05-11
Abstract: 1,064,345. Bearings; lubricating. FARBWERKE HOECHST A.G. May 11, 1965 [May 11, 1964], No. 19822/65. Heading F2A. Roller bearings are lubricated and sealed by introducing powdered P.T.F.E. therein. The P.T.F.E. powder may be mixed with molybdenum disulphide or with graphite. The bearing elements may be roughened mechanically or chemically and may be coated with nickel, phosphates or oxides, for example.
Patent GB-1009631-A (GB)
Title: Improvements in or relating to methods of brazing
Inventor: HARRISON GRAHAM ALFRED
IPC: C22C19/00
Filed: 1964-05-13
Abstract: A brazing alloy comprises .Si.0.25-1.8% .Cu.1.0-20.54% the balance being nickel and manganese in the ratio of 2.12-3 parts by weight of Ni per one part by weight of Mn.  The alloy may be homogenized at 1600-1800  DEG F. prior to hot and/or cold working to form a brazing wire or foil.
Patent GB-1219657-A (GB)
Title: Apparatus for spinning fibres
Inventor: OSKIN LEV IVANOVICH
IPC: D01H4/10
Filed: 1968-04-26
Abstract: 1,219,657. Break spinning. VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT LEGKOGO I TEXTILNOGO MASHINOSTROENIA. 26 April, 1968, No. 19845/ 68. Heading DID. The base of a break-spinning chamber 2 is provided with an integral boss 4 inside the chamber and having the form of a solid of revolution. The end-face of the boss is provided with teeth or grooves inclined in the direction of rotation. The end face of the boss may be concave and the teeth or grooves may be skew.