baber/WOPTO huggingface dataset:
Patent GB-1168712-A (GB)
Title: Method of and Means for Analog to Digital Conversion of a Measured Value.
IPC: H03M1/40
Filed: 1967-04-19
Abstract: 1,168,712. Analogue-to-digital converters. BÍLKOW G.m.b.H. 19 April, 1967 [28 April, 1966], No. 18049/67. Heading G4H. [Also in Division H3] An analogue-to-digital converter comprises a first sample and hold unit to store the voltage to be measured, and a second sample and hold unit to store the voltage after comparison with a reference voltage, the second unit having means for subtracting the reference voltge from the input voltage, and means for multiplying by a factor the resulting voltage, the output of the second sample and hold unit being connected to the store of the first, through an amplifier and a switch. A control device controls a number of switches in the converter to cause the signal to circulate through the second unit several times to obtain the required number of digital bits. The first sample and hold unit comprises amplifier 1<SP>1</SP>, electronic switch 2<SP>1</SP>, storage capacitor 3 and output amplifier 4<SP>1</SP> with a very high input impedance. The switch 2<SP>1</SP> comprises a pair of transistors each having a series diode connected to the output of amplifier 1. The transistors are caused to conduct briefly by a pulse applied through a transformer, charging the capacitor 3 to the value of the output of amplifier 1. Amplifier 4 applies this signal to point 5 where it is compared (at 6) with the reference voltage U N  and, if greater a " 1 " appears at the output 23 and switch 15 closes to apply the reference voltage to the feed-back loop of the second sample and hold unit 7, 8, 9, 10. The reference voltage is thereby subtracted from the voltage U A  at point 5. Resistors 12, 13 also cause the difference to be multiplied by 2 and switch 7 closes briefly to store it. on capacitor 9. This signal U B  at point 11 is passed via amplifier 16 and switch 17 (closed by control unit 24) to be stored on capacitor 3 to form a new signal U A . The process repeats under the control of unit 24 to obtain the desired number of digits. In a modification the difference signal is doubled for the first three steps and for the fourth step it is multiplied by 1À25. This is repeated, each group of four digits then representing a binary coded decimal number. The range of the converter can be adjusted by adjusting the reference voltage U N  or the amplification factor of the first sample and hold unit.
Patent GB-1063232-A (GB)
Title: Process for dyeing cellulose materials
Inventor: OHME ROLAND
IPC: D06P3/66
Filed: 1964-04-30
Abstract: Quaternary ammonium compounds of formula <FORM:1063232/C2/1> in which one of R1, R2 and R4 is a hydroxyl group, the other two are hydrogen atoms or alkyl radicals and may be the same or different, R3 is a hydrogen atom or an alkyl radical or another group of formula <FORM:1063232/C2/2> the substituents R attached to the nitrogen atoms are alkyl radicals or cycloalkyl, hydroxyalkyl or aralkyl radicals or two such substituents R may be attached to the same nitrogen may be joined together to form a ring, and in which 2 is an anion are obtained by reacting phenol, cresols, xylenols or other alkyl-phenols alone or in mixture with formaldehyde and a secondary amine in aqueous solution and subsequently quaternizing in known manner with alkyl sulphates or halides, ethylene chlorohydrin or alkylene oxides.ALSO:Dyes are fixed on natural and regenerated cellulosic fibres by treating in alkali at temperatures of 80 - 150 DEG C preferably 130 DEG C. with a fixing agent which reacts with the hydroxyl groups in the cellulose and with an alkylatable group in the dyestuff e.g. amino, alkyl-amino, phenylamino, mercapto or sulphinate group, said fixing agent having the formula:- <FORM:1063232/D1-D2/1> in which one of the substituents R1 R2 and R4 is hydroxyl, the other two are hydrogen or alkyl radicals and may be the same or different, R3 is a hydrogen atom or alkyl gorup or another group of formula <FORM:1063232/D1-D2/2> and R is alkyl, hydroxyalkyl, cycloalkyl, or aralkyl and two of the R substituents joined to the same nitrogen atom may form a ring system and 2 is an amine.  The dyestuff and fixing agents may be applied together at 10 - 70 DEG C and the alkali is added preferably towards the end of the process after which fixation may be effected by heating the dyebath to 90 - 100 DEG C or by drying and heating at 80 - 150 DEG C by hot air, steam or infra red radiation. Diazotisable amines may be fixed to the fibre using the fixing agent followed by diazotisation and coupling. Alternatively the dyestuff may be applied to the fabric which is then dried and treated in an alkaline bath containing fixer and the dyeing is then fixed as above.
Patent GB-746284-A (GB)
Title: Process for the recovery of solid substances from dispersions thereof in gases
IPC: C03B13/16
Filed: 1953-06-30
Abstract: Solid particles e.g., carbon black in colloidal suspension in a gas ore recovered by passing the suspension through chambers at a turbulent flow speed of at least 10 metres per second wherein coagulation without deposition is effected and then passing the suspended coagulated particles through a conventional cyclone separator.  The colloidal suspension traverses the chambers in a whirling or serpentine path effected by baffles and the temperature is maintained above the dew point.
Patent GB-145792-A (GB)
Title: Improved process for casting by means of compressed air
IPC: B22D18/04
Filed: 1920-07-02
Abstract: 145,792. D÷hle, F. Nov. 22, 1917, [Convention date]. Casting - machines.-Metal is cast under pressure by forcing the metal from a crucible b into a mould d by air pressure produced in a cylinder c by a crank-operated piston h. The mould is clamped in a swinging arm e by a screw and the crucible is carried by the cylinder which slides on guides g. The air pressure in the cylinder may be allowed to rise before it reaches the crucible, by inserting a control cock in the pipe connecting the cylinder to the enclosed crucible, the cock being operated by an adjustable cam and tappet rod from the piston. A valve in the piston admits air to the cylinder when the piston is at the lower end of its stroke. The crucible and cylinder are lowered from the mould during the downward stroke of the piston.
Patent GB-112041-A (GB)
Title: Improvements in or relating to Boots or Shoes.
IPC: A43B9/12
Filed: 1916-12-19
Abstract: 112,041. British United Shoe Machinery Co., (United Shoe Machinery Co.). Dec. 19, 1916. Connecting uppers to insoles and soles.-In the manufacture of rubbersoled boots or shoes, and particularly shoes with fabric uppers, commonly termed " sneakers," a shoe upper 2, Figs. 3 and 5, of leather or canvas or other fabric, provided with a fibre heelstiffener 3 and with its toe portion also stiffened either by a toe-stiffener or by liquid materials, and an insole 6 of leather or other fibrous material are assembled on a metal last 5, preferably made of aluminium alloy, and the upper is then lasted, as by the hand-method type of machine, and secured by tacks 8. In turn, a filler 9 of vulcanizable composition, a foxing 15 of high-grade rubber, a binder 16 of friction fabric, and an outer sole 18 of calendered rubber or rubber-like composition are applied to the shoe, and the materials are consolidated as by rolling pressure. If the shoe is to have a heel, it is preferably provided with a shank stiffener comprising a strip 12, Fig. 6, of spring metal placed between sheets 13 of friction fabric. The heel 20, Fig. 5, preferably consists of the same fibre stock as the insole, and is fastened to the shoe by nails 21; it is preferably provided with a rubber top lift 22, and, after being attached, is covered with a sheet 23 of rubber, which is preferably extended to cover a part of the upper so as to form substantially a continuation of the foxing 15. The shoe thus formed is then placed in a vulcanizing apparatus and cured. In some cases the covering 23 is omitted from the heel, which is then attached by nailing after the shoe has been vulcanized. Specifications 3711/95 and 9293/00 are referred to.
Patent GB-949035-A (GB)
Title: Improvements in methods of and apparatus for controlling the heating of wire which is being provided with an insulating or other covering or coating
Inventor: MASON DONALD JOHN
IPC: B29C48/05
Filed: 1959-05-28
Abstract: Apparatus for the heat treatment of wire which is passed through at least one heating zone in which it is heated by means of an electric current comprises control means responsive to changes in the speed of the wire for varying the heating current in order to reduce variations in the temperature of the wire leaving the heating zone due to changes in the wire speed.  As shown, wire 2 passes through an annealing and reheating machine 1 before it enters an extruding machine 3 which provides the wire with a covering, e.g. of insulating material.  During its passage through the machine 1 the wire passes over sheaves 8 to 14 as illustrated, sheave 9 being electrically connected to a supply line 24, sheave 10 to a supply line 25 and sheave 11, 13 and 14 to a return line 28.  The sections 30, 31, 32 of the wire constitute a pre-heating zone, the section 33 which passes through a pipe 34, containing non-oxidizing atmosphere and terminating in a quenching bath 35, constitutes an annealing zone, and sections 36, 37 constitute a re-heating zone. <PICT:0949035/C3/1> <PICT:0949035/C3/2>
Patent GB-1138508-A (GB)
Title: Photographic gelatino compositions
IPC: G03C1/81
Filed: 1966-04-26
Abstract: 1,138,508. Gelatin composition. EASTMAN KODAK CO. 26 April, 1966 [27 April, 1965], No. 18311/66. Heading C3H. [Also in Division G2] A gelatine coating composition contains a norbornane compound which contains at least two hydroxy groups each of which is attached to a carbon atom which is either part of, or is attached directly or indirectly to, the norbornane nucleus, e.g. wherein R and R 1  each represents hydroxyl, hydroxy alkoxy, or hydroxy cyclo-alkoxy such as 5-(2-hydroxy)-norbornoxy, as gelatine plasticizer.
Patent GB-855123-A (GB)
Title: Improvements in or relating to fluid flow control means
Inventor: DUBOIS ROBERT CLARK
IPC: F16K5/12
Filed: 1957-06-11
Abstract: 855,123. Regulating fluid flow; valves. MANNING, MAXWELL & MOORE Inc. June 11, 1957, No. 18393/57. Class 135. A flow restrictor device comprises two relatively movable elements defining a chamber having at least one inlet and outlet between which is located a dam or barrier member which co-operates with a groove in one of the elements to define a restriction, the groove being of varying cross-section so that relative movement of the two elements varies the size of the restriction. In the first example, Fig. 15, a block 402 rests on a rigid base 400. A chamber 404 has an inlet 412 which communicates with an outlet 411a via a restriction 409a and the bore 410a of a ring member 413. The restriction 409a is formed by the top of the barrier member 413 and a longitudinal groove 406 in the member 402. A resilient 0-ring 414 urges the ring member 413 upwardly. The groove 406 may be of constant or varying width and depth with the base straight or curved to give a desired linear or non-linear response. In another example, Fig. 1, the rigid base 50 and the block 52 are of circular form, the block being rotatably mounted on the base by a shoulder screw S. Circular 0-rings 53, 54 define an annular chamber 55 having an inlet 56 and an outlet 57. The dam or barrier 60, Fig. 3, has a central core and is urged upwardly by a resilient 0-ring 59 to co-operate with a spiral groove 62 of increasing size on the underside of the knob or block 52 rotation of which varies the restriction formed by the groove and the dam member 60. The groove 62 ends in a rectangular recess so that maximum unrestricted flow may be obtained. A casing 64 containing a bellows 65a is secured to the base 50. The inlet 56 communicates with the interior of the casing and the outlet 57 with the bellows 65a. There may be provided two chambers 55, two spiral grooves, two inlets and two outlets and two barrier members. If the groove is of spiral form, Fig. 10, the barrier member 96 is guided by a rib 99. In a modification the groove of varying size is formed on a cylindrical plug 72a, Fig. 9, rotatable within a cylinder 70a. In another example, Fig. 4, the base 50a has three ports 56a, 56b, 57 communicating with the chamber 55. The ports 56a, 56b communicate with the chamber 55 through the central bore of barrier members 60a 60b which co-operate with separate oppositely tapering spiral grooves. If the ports 56a, 56b are used as inlets for fluids of different pressures the outlet pressure will vary in accordance with some of the restriction areas. In a modification of this embodiment the grooves are formed on a cylindrical plug member.
Patent GB-1065687-A (GB)
Title: Pneumatic single beat lift valve
IPC: F16K31/36
Filed: 1964-05-04
Abstract: 1,065,687. Valves. S. T. DUPONT. May 4, 1964 [May 13, 1963], No. 18397/64. Heading F2V. A vent valve has the moving closure 5 urged on to its seat 13 by a spring 15 and the fluidpressure in the inlet 2. The valve has an operating button 22 between which and the closure 5 is a spring 25 that is stronger than the other spring 15. The first part of the depression of the button 22 compresses the spring 25 and displaces a rod 11 slidable in the closure 5 so compressing the spring 15 and preventing it from acting on the closure 5; continued movement of the button physically unseats the closure 5 and connects the inlet 2 to a vent port 60, the spring 25 causing the closure 5 to move rapidly to the right until it abuts the stop 16 on the rod 11.
Patent GB-922739-A (GB)
Title: Improvements in or connected with fishing reels
Inventor: YOUNG EDWARD EMLYN
IPC: A01K89/01
Filed: 1960-05-25
Abstract: 922,739. Fishing reels. J. W. YOUNG & SONS Ltd. Aug. 21, 1961 [May 25, 1960], No. 18402/60. Class 48. In a fishing reel having a flyer for winding the line on to a reciprocating non-rotatable line drum, the flyer is connected to the handle shaft b by a one-way clutch c of the type which allows the flyer to overrun freely in either direction and rotation of the flyer in the line unwinding direction is controlled by an adjustable brake. The one-way clutch c connects the handle shaft b to a worm wheel d meshing with a worm e<SP>1</SP> rotating the flyer. The adjustable brake comprises a thumb wheel j acting on a coil spring j<SP>1</SP> to transmit pressure through a member k and an eccentric k<SP>1</SP> to a disc i which frictionally engages the worm wheel d. The shaft b is prevented from rotating in the line unwinding direction by a spring f wound around the driving member of the one-way clutch c, one end of the spring f being attached to the reel casing. The eccentric k<SP>1</SP> is coupled to a shaft m to reciprocate the line drum. A spring h secured to the worm wheel d engages slots in the disc c to make a clicking noise when the line is unwinding.
Patent GB-636759-A (GB)
Title: Filter assembly for coffee makers
IPC: A47J31/043
Filed: 1947-07-11
Abstract: 636,759. Filter assemblies for coffee-makers. DEHN, S. G. (Sunbeam Corporation). July 11, 1947, No. 18433. [Class 46] [Also in Group VI] A filter assembly for a coffee maker of the vacuum type comprises a filter element 29 arranged between a pair of frames 43, 22 which may be releasably locked together, the filter assembly being pressed in position against the bottom of the upper bowl 2 by a spring 20 mounted on the rod 9, the hooked lower end 13 of the rod engaging the lower end of the liquid displacement tube 5 so that the filter assembly will be upwardly displaced in the event of excessive pressure in the lower vessel 1. The lower frame 22 of the filter assembly is formed with two resilient struts 26 having horizontal L-shaped extensions 261, the inner edges 27 of which may engage a circumferential groove 28 in the sleeve 17 to which the upper frame 43 is attached, thereby clamping the filter element in position. The sleeve 17 is freely slidable on the rod between the abutments 11, 12, the spring 20 being interposed between the upper end of the sleeve and the upper abutment 11. Specifications 625,797, 636,756, [both in Group VI], and 636,757 are referred to.
Patent GB-155865-A (GB)
Title: Improvements in or connected with trucks, transporters and the like
IPC: B62B3/06
Filed: 1919-07-25
Abstract: 155,865. Vickery, F. W. July 25, 1919. Hand-trucks.-Relates to a hand truck with a. lifting-platform of the type in which the platform can be raised in a number of stages by successive operations of the handle and disengaged from the handle at any stage, the platform being then sustained by catch-devices and the handle free for steering and manipulating, the truck. On. a shaft 4 carried by the platform 1 are mounted hooked bars 2 for raising the platform and another, hooked bar 5 which engages with a cut-away portion on a shaft 8 for holding the platform in its raised position. When it is desired to raise the platform from its lowest position the bars 2 are pressed down by a pedal 16 so that the uppermost hook engages with a projection 15 on the handle 11. By depressing the handle the platform is raised until the uppermost hook on, the bar 5 engages with the shaft, 8. The handle can then be raised for the projection 18 to engage the second hook on the bar. 2, and the platform thus raised in a series of stages. When it is desired to lower the platform the shaft 8 is turned by a pedal 18 to disengage the bar 5. A check appliance is provided consisting of a cylinder containing liquid in which works a piston 24, the end 22 of the piston rod being prolonged through the end of the cylinder opposite to that at which it is connected to the platform. To disengage the bars 2 automatically when the platform reaches its highest point, a projection 19 on the bar 2 engages with a slotted link 20 attached to a spring 21. As: the platform rises the projection 19 travels up the slot in the link 20 until the platform nears its highest position, when it reaches the end of the slot and puts the spring 21 in tension. The guides in which the platform travels may so be arranged as to support a greater portion of the weight of the platform when this, is' in its higher position.
Patent GB-530491-A (GB)
Title: Improvements in thermionic electrodes, more particularly for electric discharge lamps
IPC: H01J61/067
Filed: 1939-06-26
Abstract: 530,491. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., BOWTELL, J. N., and JENKINS, H. G. June 26, 1939, No. 18553. [Class 39 (i)] Thermionic electrode, particularly for gas filled discharge lamps, comprises a hollow perforated metal member 1, a surrounding sheath 6 of insulating material, and thermionically active material in the intervening space. The member 1 may be a perforated tube, as shown. or a wire helix and is fitted over a block 41 on the end of a supporting wire 4 which is supported by a glass sheath 5 sealed to the pinch 2. The sheath 6 is of quartz, closely surrounds the sheath 5, and is constricted at 7 to bear on the block 41. It is secured on the pinch by a wire 13 attached to a glass hook 14 and wound about the lower part of the pinch. The electrode may be de-gassed by eddy-current heating of a sleeve 10 on the outside of the sheath 6, by heating the metal member 1 by passing a current therethrough, particularly if the electrode is of the independently heated type, by heating by the discharge or by other means, the perforated construction of the member 1 facilitating the de-gassing process. Specification 503,250 is referred to.
Patent GB-683511-A (GB)
Title: Process for the production of hydrocyanic acid
IPC: C01C3/02
Filed: 1950-07-26
Abstract: Hydrocyanic acid is produced by reacting a mixture of a volatile nitrogen compound and a volatile carbon compound, with or without oxygen, in the presence of a metal alloy or metallic mixture catalyst containing at least 5 per cent by weight of ruthenium based on the metallic content of the catalyst.  Ammonia and hydrocarbons, especially methane, say 1 : 1.05 by volume, may be passed at 800-1200 DEG C over alloys of platinum with say up to 35 per cent ruthenium, which may contain palladium, iridium, or osmium, as foils or wire gauze, or over mixed catalysts deposited from salts solutions on to ceramic carriers.  Nitrogen oxygen compounds may be used in place of or together with ammonia.
Patent GB-1254091-A (GB)
Title: The preparation of mono-(2-cyanoethyl)-acetonimines and of 5-oxocapronitrile
IPC: C07C255/45
Filed: 1970-04-20
Abstract: 1,254,091. Mono - (2 - cyanoethyl) - acetonimines; 5-oxocapronitrile; cyclohexylamine. STAMICARBON N.V. 20 April, 1970 [25 April, 1969], No. 18699/70. Heading C2C. Mono - (2 - cyanoethyl) acetonimines are obtained by reacting acetonimines with acrylonitrile in a molar ratio of at least 1À5 : 1, the non-converted acetonimines being recovered from the reaction mixture. 5-Oxocapronitrile may be obtained by hydrolysis of one of the above acetonimines and the primary amine liberated, e.g. cyclohexylamine, may be recovered.
Patent GB-804580-A (GB)
Title: Glass bending moulds
IPC: C03B23/027
Filed: 1956-05-23
Abstract: 804,580. Bending glass sheets. PITTSBURGH PLATE GLASS CO. May 23, 1956 [July 2, 1955], No. 18719/57. Divided out of 804,578. Class 56. In a skeleton-type glass-bending mould wherein the moulding surface 26 is formed by a thin bar 30, a portion of the bar has an increased cross-section so as to have a higher thermal capacity per unit length than the thermal capacity per unit length of the neighbouring portions. As shown the increased cross-section is imparted by the shaped portion 29 of the arm 28 by which the extreme end portion 4 is pivoted to the intermediate end portion 3 of the mould described in Specification 804,578. This has the effect of preventing overheating and overbending of the tips of the glass sheet.
Patent GB-775188-A (GB)
Title: Improvements relating to fluorescent materials
Inventor: DOHERTY MARY TERESA
IPC: C09K11/71
Filed: 1954-06-25
Abstract: 775,188. Luminescent materials. SIEMENS BROS. & CO., Ltd. June 3, 1955 [June 25, 1954], No. 18733/54. Class 39(1). Luminescent material, luminescing red in response to radiation of 2537Š, comprises calcium pyrophosphate activated by thallium and manganese in which phosphorus pentoxide is present in excess of stoichrometric proportion, e.g. there may be present 1À2-1À25 gram mols. of phosphorus pentoxide for 2 gram mols. of calcium oxide. The material can be prepared by mixing calcium hydrogen phosphate, diammonium hydrogen phosphate and compounds of thallium and manganese, such as the oxide, nitrate or carbonate, and firing the mixture in air at a temperature between 800‹C. and 1100‹C. preferably 900‹C. The proportion of thallium lies between 0À0075 and 0À0225 gram atoms, of manganese between 0À015 and 0À025 gram atoms and of diammonium hydrogen phosphate between 0À2 and 0À25 gram mols., per gram mols. of calcium hydrogen phosphate. The calcium pyrophosphate may be prepared by igniting a mixture of calcium carbonate and diammonium hydrogen phosphate or by igniting calcium hydrogen phosphate alone. The calcium hydrogen phosphate can be prepared by precipitation from solutions of calcium chloride and diammonium hydrogen phosphate. The excess of phosphorus pentoxide can be obtained by adding diammonium hydrogen phosphate to the calcium pyrophosphate obtained by igniting calcium hydrogren phosphate or by increasing the amount of diammonium hydrogen phosphate above that in the stoichrometric formula when the calcium hydrogen phosphate is obtained by precipitation.