baber/WOPTO huggingface dataset:
Patent GB-967246-A (GB)
Title: Etching liquid for semi-conductor elements
IPC: C23F1/14
Filed: 1961-11-23
Abstract: An etching liquid for a semi-conductor material contains magnesium fluoride whereby the viscosity of the etching liquid, e.g. HNO3 and HF, is increased. The semi-conductor may be Si, Ge or an intermetallic compound of Group III and IV or II and VI.  The etching liquid, e.g. fuming HNO3 and 40% HF in a 1 : 1 ratio may be gelatinous and applied by spatula.  The magnesium fluoride may be added to the mixed acids, or a magnesium salt, e.g. nitrate or acetate, may be added to the nitric acid which is then mixed with the hydrofluoric acid to precipitate colloidal magnesium fluoride, or magnesium oxide may be dissolved in glacial acetic acid which is added to the nitric acid.ALSO:An etching liquid for a semi-conductor material contains magnesium fluoride whereby the viscosity of the etching liquid, e.g. HNO3 and HF, is increased.  The semi-conductor may be Si, Ge or an intermetallic compound of Group III and IV or II and VI.  The etching liquid, e.g. fuming HNO3 and 40% HF in a 1 : 1 ratio may be gelatinous and applied by spatula. The magnesium fluoride may be added to the mixed acids, or a magnesium salt, e.g. nitrate or acetate, may be added to the nitric acid which is then mixed with the hydrofluoric acid to precipitate colloidal magnesium fluoride, or magnesium oxide may be dissolved in glacial acetic acid which is added to the nitric acid.
Patent GB-1175351-A (GB)
Title: Improvements in or relating to Automatic Information Processing Apparatus.
Inventor: PARKINSON NOEL PERCIVAL
IPC: B07C3/00
Filed: 1965-10-04
Abstract: 1,175,351. Statistical apparatus. MOORE REED & CO. Ltd. 3 Jan., 1967 [4 Oct., 1965], No. 42084/65. Heading G4M. A coded signal derived from a document, e.g. postal mail, is compared with successive reference coded signals from a store, and on equivalence being detected, a corresponding destination code is gated out from the store, e.g. to control sorting equipment. The contents of a reader output store 16 are transferred to bi-stable circuits 18, the outputs of which are compared by equivalence gates 25 with corresponding digits of the sequence of reference coded signals. Gates 26, 27 detect complete equivalence and set monostable circuit 30 and bi-stable circuit 31, the equivalence signal being generated about halfway through a reference coded signal by means of a delay flip-flop 29 supplied with clock pulses from the store in synchronism with the reference coded signals. At the start of a reading operation, a letter present signal triggers flip-flops 21, 22, the former remaining on for a complete store cycle and the latter initiating a checking routine at the end of a store cycle. The setting of bistable 31 by the equivalence signal opens gates 35 by way of inverter 34 to enter the corresponding destination code into output bi-stables 36 from additional tracks on the store. At the same time, bi-stable 38 is set via gate 37 to indicate that a decision has been made. Bi-stables 18, 31 and 36 are reset when flip-flop 30 reverts to its stable state. At the end of a store cycle following detection of a letter, flip-flop 21 resets and the state of bi-stable 38 is interrogated at gate 52. Output 83 or 84 is produced if, with a letter present, there was no input code or if the code did not correspond to any of the reference codes, and these outputs may be used to enter special codes in output store 36. Checking routines.-Gates 58, 59 check that output store 36 has been reset, and the output PRI is used in conjunction with gates 44, 45, 60 and 61 to set a routine bi-stable if the input store 18 is also reset. Setting of bi-stable 63 sets the input store to the all 1's condition and initiates a search for a corresponding word in the store, which when completed, causes the output store 36 to be set to the all 1's condition and a consequent check output from gates 67, 68. The checking routine is repetitively carried out in the intervals between letters, an alarm being indicated if a check routine is not satisfactorily completed. Special code.-A letter having an all 1's code is recognized by gates 74, 75 detecting anticoincidence with the gaps between reference codes. Flip-flop 79 is triggered and prevents setting of bi-stable 31 and an output is obtained at 85 to set a special code in the output store.
Patent GB-961795-A (GB)
Title: Improvements in the production of crosslinked polyolefins
IPC: C08K5/33
Filed: 1962-11-07
Abstract: Polyethylene, polypropylene and/or polybutene or a copolymer thereof is cross-linked by incorporating 0.1-20% of an ester of p-quinone dioxime or (except for polypropylene) of the dioxime itself as the only cross-linking agent and heating the mixture at a temperature and for a time sufficient to cause cross-linking. 1-80% of a filler, e.g. carbon black, calcium carbonate, silica, alumina, oxides, hydroxides, silicates or clay, may be mixed with the polyolefine before curing. The ester may be formed in situ from the dioxime and an aliphatic or aromatic carboxylic acid, anhydride and/or ester of such an acid, and may be the benzoate, acetate, maleate, propionate, butyrate, dodecenylsuccinate or laurate. Polyethylene may be crosslinked at above 175 DEG C., oxidized polyethylene of carbonyl content at least 0.05% at above 150 DEG C., polypropylene at above 225 DEG C. and a copolymer of ethylene and propylene at above 200 DEG C.  The polymer may contain an antioxidant, e.g. 4-41-thiobis- (6t-butyl-m-cresol) or 2, 21-methylene-bis-(4-ethyl-6-t-butylphenol) and may be shaped at or not more than 20 DEG C. above, its melting point, e.g. 20-150 DEG C., before being cross-linked. The polymer may be used to form a pipe, wire, cable jacketing, film or tubing. Specification 471,590 is referred to.
Patent GB-1031728-A (GB)
Title: Improvements in or relating to methods of toughening glass articles and to toughened glass articles so produced
IPC: C03B27/06
Filed: 1962-11-07
Abstract: A method of toughening moulded glass articles having a main panel portion and a peripheral flange surrounding said portion, comprising heating the glass article to a temperature above the strain point of the glass and then subjecting both surfaces of the main panel portion to a chilling action, is characterized in that one surface of the panel portion is more strongly chilled than the other surface whereby, for a given general degree of toughening, the impact resistance of the said one surface of the panel portion is enhanced. One article toughened by this method is an implosion guard of toughened transparent glass for use in a television tube assembly, which has a main panel portion of a tray formation 2 (Fig. 1, not shown) which has a double curvature (convex-concave) matching the end formation of the tube, and a boundary wall 3 adapted to surround the end of the tube and forming a peripheral flange.  The guard 1 is placed on a rotary frame 5 (Fig. 2, not shown) which supports the guard between an upper set of blowing nozzles 8 forming the concave surface and a lower set 9.  A set of nozzles 9a face the corners of the guard.  The distance from the guard of the nozzles 8 and 9a is about half the distance from the guard of nozzles 9.  This method of toughening puts the line of maximum tension at a distance of about 40% of the thickness of the glass from the convex surface, see Fig. 4 (not shown).  The concave surface therefore has enhanced ability to withstand impact of flying fragments from an imploded tube, and the convex surface is more able to withstand bending pressures.  The method is also described with reference to other articles.
Patent GB-942541-A (GB)
Title: Method and apparatus for fabricating structural panel and core therefor
IPC: B21D47/00
Filed: 1959-12-11
Abstract: 942,541. Welding by pressure. J. R. CAMPBELL. Dec. 11, 1959, No. 42193/59. Heading B3R. In welding core elements to spaced sheets to form a reinforced panel, an electrical conductor is positioned in contiguity to the margins of one core element at a time which element is located with its margins engaging the inner surfaces of the sheets and electrodes are engaged with the external surfaces of the sheets to weld together the margins of the one core element and the sheets and the margins of an adjacent core element. The machine shown is for welding a panel having a honeycomb core as described in Specification 832,069, the core consisting of corrugated strips 74 having flanged edges which interfit at their apices. The external sheets 42, 44 are clamped at the required spacing to a carriage 28 movable vertically by a weighted lever 40. Each corrugated strip 74 is in turn secured by suction on the insulated surface of a corrugated conductor 56 mounted on a bar 54 having locating projections 64 engageable with corresponding recesses 66 on the machine frame 20 to locate the bar 54 in either of two positions spaced apart by the horizontal distance between the upper and lower apices of the conductor 56. When the sheets 42, 44 have been lowered into position the flanges of adjacent strips 74 are welded to each other and to the sheets by a pair of roller electrodes 96 mounted on arms 84 to which pressure is applied by an adjustable toggle linkage 120. The arms 84 are supported on a table 12 by rollers 82, 106 and together with the electrodes 96 are moved horizontally to effect the weld by a rack 140 and pinion 146 driven by a motor 150. Cooling water is sprayed on to the outside of the sheets 42, 44 by nozzles 107 of cooling spray may also be directed between the sheets. Current supply circuits are described in which the conductor 56 is or is not connected to the supply. In all cases the greater part of the current passes through the conductor 56 and not through the webs of the strips 74.
Patent GB-1365883-A (GB)
Title: Valve actuating mechanisms
IPC: F16H1/32
Filed: 1971-08-25
Abstract: 1365883 Valves; slip clutches; epicyclic gearing MAXSEAL Ltd 25 Aug 1971 [3 Sept 1970] 42272/70 Headings F2V F2C and F2Q A mechanism for actuating a valve, comprises an electric motor 16 driving an output shaft 62 to the valve (not shown) via epicyclic reduction gear. The motor shaft 22 drives, via a torque limiting coupling, a shaft 44 having eccentrically mounted gearing 52, 56 thereon respectively meshing with a ring gear 54 in a normally stationary block 34 and with a ring gear 60 of the output shaft 62. Latching means 38 may be released so that block 34 is free to rotate, thereby permitting manual actuation via shaft 69. The torque limiting coupling comprises a cap 70 fitted on the end of shaft 22 and having a projection 74 normally biased by lever and spring means 80, 86 into engagement with both recesses 76, 78 in the ends of shafts 22, 44, excessive torque causing the projection to ride up the sloping sides of the recesses to disengage the coupling. The resulting axial movement of the cap causes end 88 of lever 80 to actuate a cut-off switch 92 for the electric motor. One or both recesses can be extended around its shaft to permit some free play. A single recess could instead be provided in the cap and co-operate with projections provided on the ends of the shafts. The coupling may be rotationally fixed to one shaft and make a torque limiting connection with the other shaft.
Patent GB-1439908-A (GB)
Title: Till tray having a currency note holder
IPC: G07G1/00
Filed: 1974-09-30
Abstract: 1439908 Tills N C R CORP 30 Sept 1974 [18 Oct 1973] 42330/74 Heading A4T A till tray has a currency note holder comprising a support 18 detachably mounted in the tray 14 and a lever 20 for engaging the notes (54), Fig. 3 (not shown), the lever 20 having a cam portion 48 for engaging a leaf-spring 40 incorporated in the support 18 so that the lever 20 is urged against the notes (54). The support 18 comprises spaced members (36), (38), Fig. 1 (not shown), with apertured lugs (39), the lever 20 having rods (50) which pivotally engage in the apertures, with the cam portion 48 engaging a central portion 56 of the leaf-spring 40. As shown, the lever 20 is urged downwardly, but it may be pulled beyond a centre position so as to be urged upwardly, Fig. 4 (not shown), and the support 18 has a leg portion 22 engaged in a recess 24 of the tray wall, an aperture 34 enabling insertion of a releasing tool. The support 18 is preferably of acetal plastics material, and the lever 20 of nylon.
Patent GB-1158404-A (GB)
Title: Improvements in or relating to Electrochemical Devices
IPC: H01M8/02
Filed: 1966-09-23
Abstract: 1,158,404. Electrochemical cells. LEESONA CORP. 23 Sept., 1966 [30 Sept., 1965], No. 42459/66. Heading H1B. An electrochemical cell comprises an anode, a cathode, and an electrolyte chamber between the anode and cathode and formed, in part, by the anode and cathode, the electrolyte chamber being filled, at least partly, by an electrolyte resistant refractory metal oxide consisting of thorium oxide, cerium oxide, zirconium oxide, aluminium oxide, mixtures thereof, or mixtures thereof with silica. The refractory metal oxide may be in the form of a porous sintered body in the electrolyte chamber, free-flowing particles filling or substantially filling the electrolyte chamber or an inert layer on an electrochemically reactive metal layer of at least one of the anode and cathode, the inert layer being located in the electrolyte chamber. In an example, cerium oxide powder is compacted and sintered in the form of a ring, and is used as an electrolyte matrix in a fuel cell in the presence of an aqueous potassium hydroxide solution.
Patent GB-1045083-A (GB)
Title: Improvements relating to the guiding of textile yarns
Inventor: MACKIE JOHN KAY PRINGLE
IPC: D01H7/18
Filed: 1962-11-12
Abstract: To ensure that the twist will extend up to the nip of the delivery rollers, above each spindle of a ring-spinning frame is mounted a yarn guide comprising a body with a cylindrical bore with an air-passage leading into it tangentially, whereby the yarn is kept out of contact with the sides of the passage, and if desired, additional twist can be imparted to the yarn.  The device is used particularly when a head surmounts the spindle to collapse the balloon.  The bore is formed of portions 3, 4 Fig. 3, (not shown), of different diameters, the air tube 8 joining it just below the neck 5, whereby the air is given a combined circular and downward movement. By raising the pressure of the incoming air, additional twist is given to the yarn.  The device may be carried by a guide which is rotatable for ease of doffing about a pivot which is a supply tube for the air, Fig. 4, (not shown).  An inclined threading slot 2 may be provided in the block with a curved guide 14 to one side of it.
Patent GB-1042885-A (GB)
Title: Improvements relating to catalysts and their use for isomerisation
IPC: G01N30/00
Filed: 1962-11-13
Abstract: C4 and higher paraffins boiling up to 200 DEG  C. are isomerized by contacting in the presence of hydrogen at below 400 DEG  F. with a catalyst prepared by contacting an alumina having a reversible benzene adsorption (specified conditions) of 10 m  moles/gm. with a compound of formula <FORM:1042885/C4-C5/1> (where X and Y are the same or different and may be H, Cl, Br, F or SCl, or where X and Y together are O or S) under non-reducing conditions and a temperature such that free aluminium chloride is not formed.  The preferred feedstock comprises a major proportion of pentane and/or hexane and preferred conditions are 50-400 DEG  F. and 0-2000 p.s.i.g. Preferred catalysts contain hydrogenating metals of Periodic Groups VIa and VIII, e.g. 0.01-5% by wt. Pt or Pd.  In examples, a C6 cut of stated composition and containing 0.01% wt. of CCl4 was isomerized using catalysts prepared using carbon tetrachloride as the above compound and containing platinum, at 270 DEG  F. and 250 p.s.i.g. whereby products containing an increased proportion of 2:2-dimethyl butane were obtained.ALSO:Alumina is prepared by hydrolysis of aluminium isopropoxide (a) by addition of powdered isopropoxide directly to a 6% aq. hydrogen peroxide solution and (b) by addition of half the desired quantity of hydrolysing solution (deionized water, 5% aq. ammonium hydroxide, or 6% aq. hydrogen peroxide) to a solution of isopropoxidoe in benzene, stirring, decanting the benzene layer and adding the remainder of the hydrolysing solution to the slurry.  The products are centrifuged, washed with deionized water repeatedly, and samples thereof dried at 120 DEG  C., followed by conditioning at 500 DEG  C. in dry nitrogen prior to testing for use in catalyst composition (see Division B1).ALSO:Alumina is tested to determine its suitability for use in catalysts of specified type by determining the reversible adsorption of an aromatic hydrocarbon therein under specified conditions.  The apparatus and method of determination is that described in Specification 1,026,723 in relation to determination of organic sulphide adsorption.
Patent GB-1309669-A (GB)
Title: Lincomycin derivatives and the manufacture thereof
IPC: C07B61/00
Filed: 1970-09-08
Abstract: 1309669 Lincomycins UPJOHN CO 8 Sept 1970 [17 Oct 1969 6 May 1970] 42947/70 Heading C2C  Compounds of the formula wherein R is H, an organic radical capable of forming R<SP>111</SP>CHO especially an alkyl group of two or more carbon atoms, phenyl, hydroxy-, methoxy-, nitro- or methyl-phenyl, Me is alkyl, X is Cl, Br, I, or OH and Ac is H or a carboxy acyl group especially a radical of the formula where R<SP>1</SP> is H or 1-8C-alkyl and R<SP>11</SP> is 1-8C- alkyl; and their acid addition salts are prepared by reacting a compound  where Ac<SP>1</SP> is H or a protective carboxyacyl group with R<SP>111</SP>CHO to give a compound reducing the product with LiAlH 4  to give a compound and if desired acylating the amino group, and replacing X = OH by X = Br, Cl or I. Methyl - 2,3,4 - tri - O - acetyl - 6 - deoxy- 6 - nitro - 1 - thio - α - D - galactopyranoside is prepared from D-galactose by forming D-galactose dimethyl thioacetal, then methyl 1-thio-α-D- galactopyranoside, the 6 - O - tosyl derivative, the 2,3,4 - tri - O - acetyl - 6 - O - tosyl derivative, the 6-iodo-derivative and reacting the last named with NaNO 2 . Pharmaceutical compositions useful as antibiotics contain the compounds of the invention (lincomycins) and a carrier.
Patent GB-1162687-A (GB)
Title: Method and Apparatus for Video Signal Recording and Playback
IPC: H04N5/781
Filed: 1966-09-27
Abstract: 1,162,687. Video recording and playback. SONY CORP. 27 Sept., 1966 [27 Sept., 1965], No. 43001/66. Heading G5R. Video signals are recorded on a magnetic disc by a radially driven head whose drive may be disengaged to allow radial movement by an independent drive. The apparatus is used to play back still or slow motion signals by rerecording on the same disc the signals picked up by the head and repetitively playing them back until the occurrence of the next sorecorded signals. The head 20 scans a magnetic sheet 12 held taut on a support 14 while stationary recording heads 22, 24 and a playback head 26 scan a circular track. The head 20 is fed by a cam-follower device 32, 30, coupled 36 to the drive motor 18 during recording but may be moved by a hand wheel 46 when clutch 44 is disengaged. Magnetic transducers 50, 52 co-operate with a magnet 56, each to generate a pulse for every revolution of the shaft 16, while cam wheels 66, 68 trip switches to actuate pulse generators 62, 64 in like manner. The gearing 36 is an 8 : 1 stepdown, and the wheels 66, 68 each have eight cams. Recording.-The video signal at 80 (Fig. 3) is frequency or phase modulated at 84 and recorded in a spiral track on the sheet 12 by head 20, the motor 18 being driven by a servo 89 actuated by timing pulses P 1  from generator 50 and sync. pulses separated from the video signal at 90 so that one complete frame is recorded per revolution. Normal playback.-The head 20 is returned to its outer position by spring 42 (Fig. 1) when a solenoid 40 disengages the follower 30, and with the switches 100, 88 (Fig. 3) in normal (N) and playback (P) modes, the recorded signal is played back through limiter 98, demodulator 102 and amplifiers 96, 104. Slow-motion and still playback.-With switch 100 in position S, clutch 44 disengaged and sheet 12 driven, the head 20 is moved at will by the hand wheel 46 and the signal so picked up is fed through gate 106 and recorded by the heads 22, 24 for playback by head 26, the gate 106 being controlled in the following manner: pulses P 1 , P 2  at 30 c/s. (frame frequency) from the generators 50, 52 are combined in OR gate 111 to form a 60 c/s. signal P 3  which is applied to the reset side of a bi-stable 112 and to a delay 114. Pulses P 5 , P 6  from the generators 62, 64 trigger monostables 116, 118 to open gates 120, 122 controlling the passage of the pulses from the generators 50, 55, the latter pulses first passing through gates 124, 126 arranged to be closed while there exists an output R 5  from a bi-stable 128. The gates 120, 122 supply pulses P 7 , P 8  to the set side of bistable 112 which is arranged to trigger a monostable 132 to close gate 130 when R 4  falls.
Patent GB-908577-A (GB)
Title: Improvements in or relating to tear strips
IPC: B31B1/90
Filed: 1960-12-15
Abstract: 908,577. Packages; making wrappers. SCHMERMUND, A. Dec. 15, 1960 [Dec., 24, 1959], No. 43172/60. Classes 94(1) and 94(2). A web of wrapping material comprises a tear strip formed by overlapping and seaming two webs. Separate webs may be fed from rolls, overlapped and glued or welded, Fig. 4 (not shown). Alternatively a web may be cut into two webs by a rotary cutter 9 and counter roller 10 and overlapped. A U-shaped extension 3 may be provided on the overlap to form a tear tab.
Patent GB-1097616-A (GB)
Title: New reactive monoazo dyestuffs and processes for their manufacture and use
IPC: C09B62/006
Filed: 1965-10-13
Abstract: The invention comprises azo dyes that contain a fibre-reactive group, the residue of a coupling component capable of coupling vicinal to an enolizable or enolized keto group and the residue of the formula <FORM:1097616/C4-C5/1> wherein X is halogen or a C1-C4 alkyl or alkoxy group, which residue is between an azo bridge and an acylamino group, the free valencies each being directly attached to a nitrogen atom.  Preferred dyes have the general formulae (i) <FORM:1097616/C4-C5/2> wherein X is as above, m and n are each 1 or 2, Y is a fibre reactive acyl group including halogenated heterocyclic groups, and R is the residue of a component coupling vicinal to an enolizable or enolized keto group, and (ii) <FORM:1097616/C4-C5/3> wherein Q is a barbituric acid residue or a 5-pyrayolone residue bound to the azo bridge in the 4-position, n is 1 or 2 and Y1 is a monochloro 1,3,5-triazine, a di- or tri-chloro-pyrimidine, a 2-chlorobenzthiazole SO2- or CO- or a chloroquinoxaline CO residue.  Q preferably contains a sulphonic acid group.  The dyes may be prepared by coupling appropriate diazo and coupling components and the dyes obtained may be further reacted (a) with ammonia or an amine to replace a chlorine atom, or (b) with a tertiary amine or an hydrazine to quaternate the dye.  The dyes give yellow and greenish yellow tints on cellulosic materials.
Patent GB-1429399-A (GB)
Title: Method for the wet removal of dust from gases
IPC: C23F14/02
Filed: 1974-10-08
Abstract: 1429399 Treating water GOTTFRIED BISCHOFF BAU KOMPL GASREINIGUNGSUND WASSERRUCKKUHLANLAGEN KG 8 Oct 1974 [11 Oct 1973] 43458/74 Heading C1C Water used to remove CaO dust and CO 2  from gases is treated by adding an alkali metal carbonate or hydrogen carbonate into the washwater circuit in which the water after the solids have been removed as mud is recycled with the addition of fresh make-up water and additive, the additive preventing the CaCOH 2  derived from the CaO particles from going into solution. Alkali metal hydroxide may replace part of the carbonate or bi-carbonate.