baber/WOPTO huggingface dataset:
Patent GB-836574-A (GB)
Title: Improvements in electromagnetic switches
IPC: H01H50/54
Filed: 1957-05-13
Abstract: 836,574. Electromagnetic switches. ARROW ELECTRIC SWITCHES Ltd. May 13, 1957 [June 14, 1956], No. 41426/58. Divided out of 836,571. Drawings to Specification. Class 38 (5). The armature and contact carrier of an electromagnetic switch may be retained in a position between the attracted and unattracted positions by engageable means between the carrier and a switch mounting plate. The invention is described in its application to the switch of the parent Specification. Specifications 836,572 and 836,575 also are referred to.
Patent GB-1234903-A (GB)
Title: Improvements in speed control means
IPC: F01D15/06
Filed: 1969-08-20
Abstract: 1,234,903. Valves. ATLAS COPCO A.B. 20 Aug., 1969 [27 Aug., 1968], No. 41453/69. Heading F2V. [Also in Division G3] The speed of a fluid powered, hand held, grinding or drilling machine, e.g. for dentistry is kept constant by controlling the fluid pressure by a valve responsive to the difference between an actual speed signal and an adjustable reference signal. The control valve is preceded by a pressure reduction valve (Fig. 3, not shown). The actual speed signal is a D.C. voltage derived from an A.C. signal produced in a pick-up coil associated with magnetic inserts in the rotor of the machine and it is compared with the reference signal from a potentiometer in an integrating operational amplifier whose output is connected through a servo amplifier to the control valve. As shown, this comprises a coil 43 whose energization progressively causes an armature 45 to uncover a bleed orifice 41, against the pressure of a piston 46 connected to the inlet 38, but in an alternative arrangement (Fig. 7, not shown) the coil is disposed in an annular magnetic field and is mounted on a member which is movable axially to throttle the fluid supply.
Patent GB-1513448-A (GB)
Title: Single-ended to push-pull converter
IPC: H03C1/54
Filed: 1975-10-10
Abstract: 1513448 Transistor amplifier PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 10 Oct 1975 [14 Oct 1974] 41627/75 Heading H3T To convert from a single-ended input to pushpull output, with a predetermined direct current level through each of the two output terminals, the input I is taken to a transistor T l  within its emitter circuit the high impedance output of a current mirror transistor T 4  shunted by a D.C.-blocking branch C, R 3 , while the low impedance input D 1  of the current mirror is connected with an impedance R 2  in the emitter circuit of a transistor T 3  of the same conductivity type as T 1 : the collector of T 1  taken via an impedance R 1  and a transistor T 2  provides one push-pull output 2, the base 4 of T 2  being held at fixed potential, while the collector of T 3  provides the second push-pull output 3. The transistor T 4  will normally be matched in emitter area to diode D 1 , which particularly in an integrated circuit may be a diode-connected transistor, to equalize their currents; a non-unity ratio may be adopted if required. The direct current component I o  through output 3 and diode D 1  is set by the voltage applied to terminal 4, dropped across the base-emitter junctions of T 2  and T 3  and across diode D 1  and impedances R 1 , R 2 ; through output 2, transistor T 2  and impedance R 1  the current is I u  which the current mirror holds equal to I o  (unless another ratio is enforced). Pure alternating signal voltage V i  applied to terminal 1 produces instantaneous current i through T 2 , R 1 , T 1  causing a change of voltage at the base T, of -iR 1 , and current through D 1  of -iR 1 /R 2 : if R 1  and R 2  are made equal the A.C. through output 3 will be equal and opposite to that through output 4. The two currents +i and -i combine as 2i through C and R 3 , the current i being determined by R 3  since i=Vi/2R 3 ; i.e. the signal gain may be controlled by R 3  independently of the D.C. level through the output terminals. Alternatively (Fig. 2, not shown) the input may be injected in series with R 3 , in which case any direct component in the input signal need not be blocked; the current i will then depend on both R 3  and the transconductance of T 1 . Some or all of the transistors may be FET's; all the resistors may be replaced by frequency dependent impedances. Resistance R 2  may be included with diode D 1 .
Patent GB-1483631-A (GB)
Title: Transfer printing process for dyeing and printing organic material which can be dyed with cationic dyes
IPC: C09D11/03
Filed: 1974-09-25
Abstract: 1483631 Transfer printing CIBA-GEIGY AG 25 Sept 1974 [18 Oct 1973] 41787/74 Headings D1B and DIP Organic materials which can be dyed with cationic dyes are transfer printed using a carrier containing at least one disperse and/or cationic dye or fluorescent brightener, vapourisable at 150-220C at atmospheric pressure, and at least one organic cyanide as transfer promoter with a vapour pressure at 200C above 10<SP>-5</SP> Torr and optionally a binder. Preferred organic cyanides are optionally substituted alkyl cyanides or compounds containing two cyanoalkylene groups. The carrier is prepared by applying to the support, preferably made of paper, aluminium or steel, a printing ink containing the dye and organic cyanide. Preferred printing inks are either solvent based with a cellulose ether or ester as binder or water based with polyvinyl alcohol as binder. Materials which can be dyed are tannin treated cotton, leather, wool, polyamides, especially acid modified polyamides and polyesters, and preferably polyacrylonitrile and modacryl fibres. In example 30 polyacrylonitrile fabric is brightened.
Patent GB-1160737-A (GB)
Title: The Preparation of Aromatic Nitriles
IPC: B01J27/057
Filed: 1966-09-19
Abstract: 1,160,737. Aminoxidation catalysts. MONTECATINI EDISON S.p.A. 14 Sept., 1966 [22 Sept., 1965], No. 41788/66. Heading B1E. [Also in Divisions Cl and C2] Heteropolycompounds of the formulae Mx (Cey Mo 12 O w ) and Mx (Cey Mo 10 V 2 O w ) in which M represents a bismuth or tellurium atom, x is from 1 to 10, y is from 1 to 8 and w is from 38 to 82 are deposited on a carrier by impregnation of the carrier, e.g. silica gel or an aerogel, with a solution of the compound or by mixing the solution with a silica sol and drying the mixture. The deposited compound is made catalytically active by heating at 400-600C for 5-20 hours and is used in a fluidised or fixed bed to prepare aromatic nitriles from alkyl-sulbsitituted aromatic hydrocarbon, ammonia and oxygen.
Patent GB-1346209-A (GB)
Title: Preparation of ethylene-propylene copolymers
IPC: C08F210/16
Filed: 1971-09-08
Abstract: 1346209 Ethylene-propylene copolymerization catalyst PHILLIPS PETROLEUM CO 8 Sept 1971 [26 Oct 1970] 41939/71 Heading C3P 95 to 98% of propylene is copolymerized with 5 to 2% of ethylene at 115 to 145 F. in the presence of a catalyst comprising (a) titanium trichloride, (b) diethyl aluminium chloride and (c) 4 to 10 mole per cent based on (a) of triphenylphosphite.
Patent GB-1477343-A (GB)
Title: Digital timepiece
IPC: G04G5/00
Filed: 1974-09-26
Abstract: 1477343 Electronic watches SUWA SEIKOSHA KK 26 Sept 1974 [27 Sept 1973] 41964/74 Heading G3T In an electronic timepiece having a digital display e.g. of liquid crystal or l.e.d. type, and switches 17, 20, 21 which are respectively operable to set the hours, minutes and seconds, the switches 17, 20 produce stepwise advance of the hours and minutes while operation of the switch 21 causes the seconds display to return to and start from zero, a carry signal being generated in a case where the seconds display indicated 30 or more so as appropriately to advance the minutes and hours.
Patent GB-957275-A (GB)
Title: Improvements in and relating to casting
IPC: B22D21/02
Filed: 1962-11-07
Abstract: 957,275. Casting processes. UNION CARBIDE CORPORATION. Nov. 7, 1962 [Nov. 15, 1961], No. 42037/62. Heading B3F. Copper and copper alloys are poured into a mould containing a pool of molten borax-silica slag which has been allowed to stand until a slag shell has formed on the mould walls, the pouring rate being such that only the inner surface of the shell is melted. The mould may be completely filled with molten slag so that a shell is formed on the entire inner mould walls surface, or only partially filled so that the pool of molten slag rises on the molten metal at a rate sufficient to form a thin shell on successive zones of the mould walls. In a specific example the temperature of the slag is 1300 C. and copper alloy is cast at 1200 C.
Patent GB-904010-A (GB)
Title: Improvements in or relating to drinking straws and drinking appliances
IPC: B65D77/28
Filed: 1960-12-07
Abstract: 904,010. Drinking straws. YAT CHUEN YUEN. Dec. 7, 1960, No. 42079/60. Class 14 (2). In an assemblage of a container 10 of a beverage, a closure 11 therefor, and a drinking straw 12 normally held down in the container by the closure, the straw comprises a plurality of parts 12<SP>1</SP>, 12<SP>2</SP> slidably mounted one on the other, one of the parts having an open end forming a mouthpiece. Projection of the straw from the container on removal of the closure 11 may be ensured by construction of the lower and upper parts 12<SP>1</SP>, 12<SP>2</SP>, respectively of the straw in material of density less than that of the beverage, provision of a sealed, lighter-than-water ring on the lower or upper part, entrapping air in the oblique-ended upper part with a disc or a flanged plug which disc or plug becomes detached by the upward movement of the upper part on removal of the closure, release of a spring compressed in the lower part 12<SP>1</SP> and bearing against the upper part 12<SP>2</SP>, release of pressure on peripheral corrugations in the resilient material of which the lower part is made, or entrapping air in the lower part 12<SP>1</SP>.
Patent GB-1005753-A (GB)
Title: A circuit arrangement for the operation of electro-magnetic switching matrices in telephone systems
IPC: H04Q3/00
Filed: 1961-11-24
Abstract: 1,005,753. Automatic exchange systems. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Nov. 24, 1961 [Dec. 14, 1960], No. 42094/61. Heading H4K. An arrangement for interconnecting a number of subscriber's lines and a small number of exchange lines, as in a concentrator system, comprises an electromagnetic cross-point switch for each exchange line, represented by relays I, II, the magnets being controlled by transistors x 1 , x 2  . . . y 1 , y 2  . . . which are common respectively to the columns and rows of the switches. The transistors x 1 , x 2  . . . are preferably of PNP-type while y 1 , y 2  . . . are preferably of NPN-type, and the latter may, if necessary, be controlled through further transistors z 1 , z 2  . . . acting as invertors. The armatures are released upon brief excitation of the controlling magnets and are retained until re-set by a common electromagnet. Specification 891,873 is referred to.
Patent GB-1219132-A (GB)
Title: Improvements in foot-operated control switches
IPC: H01H21/26
Filed: 1968-09-05
Abstract: 1,219,132. Retractive switches. DICTAPHONE INTERNATIONAL A.G. 5 Sept., 1968 [5 Sept., 1967], No. 42359/68. Heading H1N. In a foot-operated switch for a dictating machine a cam 1, Fig. 1, and spring-loaded detent follower 12 provide a changing resistance to motion of the pedal 3 whereby the various switch positions may be sensed by the foot. In the example of Fig. 1, the follower end 12 rests in a detent 16 (at the off position I) whereby a high initial force must be applied through lever 6 from pedal 3 to move the cam 1 to the first " on " position II at which a first set of contacts 14 are closed by a cam face 13. At this position the follower 12 rests on a flat 17 providing no further resistance to movement. Return spring 8 provides a small substantially constant return force which is less than the weight of the operators foot so that the switch remains stable. For switching to the second " on " position III at which contacts 15 are closed the follower 12 rides up a sloping cam face 18 whereby a high and increasing force must be applied and maintained by the foot. In an alternative embodiment the foot switch comprises a hollow spherical foot rest 33, Fig. 3, supported by a pair of T-shaped levers 29, 30 pivoting at 31, 32 and engaging a central cam 49 slidable vertically against the action of a return leaf spring 36. The detent spring 22 is U-shaped and has ends 23, 24 engaging detents on both sides of the cam 19. Pairs of contacts 39, 40 are actuated by movement of the levers 29, 30.
Patent GB-1049210-A (GB)
Title: Titanium base alloys
IPC: C22C14/00
Filed: 1964-10-16
Abstract: An alloy has the following percentage composition:- .Al.5.5-6.5 .Sn.1.7-2.3 .Zr.0.7-3 .Mo.0.7-3 .O.up to 0.16 .Ti.and impurities, the remainder
Patent GB-945076-A (GB)
Title: Improvements in or relating to buckles
Inventor: ORNSTIN MAURICE
IPC: A44B11/28
Filed: 1961-11-28
Abstract: 945,076. Buckles; hook fastenings. A. ORNSTIN Ltd. Feb. 14, 1962 [Nov. 28, 1961], No. 42496/61. Heading E2A. A buckle comprises a frame 1 including an intermediate cross member 5 and a locking plate 2 having socket forming means 9 adapted to engage releasably about the cross member at least partially, the socket forming means being resilient so that the locking plate can be sprung on and off. The plate 2 has a C- or D-shaped end 10 to which the belt 11 is attached, e.g. by rivets 12. The tongue 14 of the belt is passed through the frame 1 where it is bent into an S-bend by the front edge of the plate, the tongue then passing below the opposite edge of the frame against which it is pressed by an upstanding part 13 on the plate, this part being tooled as desired.
Patent GB-1406840-A (GB)
Title: Transistor inverter
IPC: H02M7/5387
Filed: 1972-09-13
Abstract: 1406840 Automatic voltage control TOKYO KEIKI KK 13 Sept 1972 [22 Sept 1971] 42556/72 Heading G3R [Also in Division H2]  In an inverter of the type in which a pair of emitter followers Q1, Q2 feed opposite ends of the primary winding of an output transformer T1, the emitter followers are driven by a push-pull driver 21 the magnitude of signal from which is controlled by an auxiliary transistor Q5 in dependence on the output voltage from the output transformer T1. As described, a trigger pulse generator 41 periodically switches a flip-flop 42 so as to drive transistors Q3, Q4 alternately into conduction. The resulting waveform Fig.2 (not shown) is made trapezoidal by capacitor 19 so as to prevent simultaneous conduction of the output transistors Q1, Q2. The output voltage in winding 3 of transformer Tl is rectified at 31 and compared at 33 with a Zener diode reference voltage 32 and the conductivity of transistor Q5 thereby controlled so as to maintain substantially constant voltage across load 4. In Fig. 4, the emitter followers Ql, Q2 form part of a bridge with two other transistors Q1', Q2' and are driven by three windings of the driver transformer T2. In Fig.3 (not shown) transistors Q1', Q2' are PNP, the four transistors being driven by four windings of the driver transformer T2. Sine-wave inverters. In Fig. 5 (not shown) series and shunt resonant circuits are included between the secondary winding of T2 and the bases of transistors Q1, Q2 so that the emitter followers provide a sine-wave output.
Patent GB-1074114-A (GB)
Title: Dihydropyran derivatives in perfume compositions
IPC: C11B9/00
Filed: 1964-10-20
Abstract: Cleansing and detergent compositions contain for example, a soap, and as a perfume, 2 - (2 - methyl - 1 - propenyl) - 2,4,6 - trimethyldihydro - 4,5 - pyran, which has the structure <FORM:1074114/C4-C5/1> The compound may be used in other perfume compositions (see Divisions A5-A6).ALSO:The invention relates to 2-(2-methyl-1-propenyl) - 2,4,6 - trimethyldihydro - 4,5 - pyran, of structure <FORM:1074114/C2/1> or the structure isomeric therewith, when prepared by reacting 2-methyl-2,4-pentanediol with mesityl oxide, preferably by direct reaction in homogeneous aqueous solution. The reaction is suitably performed by refluxing the solution, with sulphuric acid as a catalyst, and recovering the pyran, after cooling and neutralizing the mixture, by distillation.  The compound is a perfume and may be used in perfume compositions (see Division A5-A6).ALSO:Perfume blends contain, as one of the perfume components, 2-(2-methyl-1-propenyl)-2,4, 6-trimethyldihydro-4,5-pyran, which has the structure:  <FORM:1074114/A5-A6/1> or structures isomeric therewith.  The compound imparts a rose top note to perfume compositions, which may comprise 1 to 50 parts of the compound, with 100 parts of other known perfumes such as citronellyl formate, citronellol, labdanum resin, nerol, rhodinol, menthone, geraniol, trans-decahydro-b -naphthol, benzophenone, artificial musk, phenyl ethyl acetate, benzyl acetate, eugenol, ionone, and phenyl ethyl alcohol.
Patent GB-1443740-A (GB)
Title: Marine engineering assemblies
IPC: E02D27/00
Filed: 1973-09-12
Abstract: 1443740 Offshore structures SEA TANK CO 12 Sept 1973 [22 Sept 1972] 42838/73 Heading E1H An offshore structure comprises a plurality of foundation elements in the form of reservoirs as claimed in Specification 1300071 each element having an upwardly projecting portion which supports a platform structure. Each upwardly projecting portion comprises a hollow column which preferably extends downwardly to the base of the reservoir and is stopped at the bottom end to form a flotation unit during submersion. Drilling equipment may subsequently extend through one of the columns.
Patent GB-1426497-A (GB)
Title: Pressure-sensitive adhesives comprising a block copolymer and a tackfier
IPC: C09J7/38
Filed: 1973-09-12
Abstract: 1426497 Polymer blends as adhesives MINNESOTA MINING & MFG CO 12 Sept 1973 42929/73 Heading C3P A tacky, pressure-sensitive adhesive composition comprises (1) an A-B block copolymer with a number average molecular weight of at least 50,000 in which: the A block is thermoplastic and glassy and has a Tg above 75 C. as determined by torsion pendulum, a number average molecular weight of at least 15,000 and comprises 20-50 wt. per cent of the total block polymer molecular weight, and is polymerized from monomers having the group, and: the B block is elastomeric and amorphous at temperatures above - 20 C., has a Tg below -20 C. as determined by torsion pendulum, has a number average molecular weight of at least 35,000 and comprises 80-50 wt. per cent of the total block polymer molecular weight and is polymerized from conjugated dienes; and (2) 10-150 parts by wt. per 100 parts of the block copolymer, of at least one compatible tackifying resin. The A block may be polystyrene, poly-t-butyl styrene, poly-alphamethyl-styrene, poly-2-vinyl pyridine or polymethylmethacrylate. The B block may be polybutadiene, polyisoprene, and hydrogenated derivatives of these. Examples of tackifying resins are coal tar hydrocarbon resins, petroleum hydrocarbon polymers, polyterpenes, and condensation products of aromatic hydrocarbons with formaldehyde. A multiblock polymer may also be present, having two poly(vinyl aryl) end segments and a polydiene central segment.
Patent GB-1345925-A (GB)
Title: Reaction products of an n-3-oxohydrocarbon-substituted 3-alkoxy-, 3-thio- or 3-amino-propionamide and a polyamine or polyamide  and their use as low-viscosity epoxy curing agents
IPC: C08L63/00
Filed: 1971-09-16
Abstract: 1345925 Diacetone 3-alkoxypropionamide derivatives LUBRIZOL CORP 16 Sept 1971 [28 Sept 1970 10 March 1971] 43289/71 Heading C2C [Also in Division C3] Novel compounds of the formula wherein Y is or a polyamide radical; Z is OR<SP>8</SP>, SR<SP>8</SP> or and each of R<SP>1</SP> to R<SP>5</SP>, R<SP>7</SP>, R<SP>9</SP> and R<SP>11</SP> is hydrogen or a substituted or unsubstituted hydrocarbon radical; R<SP>6</SP> is hydrogen, halogen, alkyl or substituted alkyl; R<SP>8</SP> is substituted or unsubstituted hydrocarbon radical; R<SP>10</SP> is a divalent substituted or unsubstituted hydrocarbon radical and n is an integer from 1 to 100, are prepared by reacting a compound of the formula with a compound of the formula in a molar ratio of from 1 : 1 to 5 : 1 at a temperature of from 25‹ to 150‹ C. The reactants are suitably a diacetone 3-(aloxy)(thio) or amino)propionamide and an alkylene polyamine. The novel compounds may be used as epoxy curing agents.
Patent GB-1426800-A (GB)
Title: Smokeless flare using liquid water particles
IPC: F23G7/08
Filed: 1973-09-14
Abstract: 1426800 Flare stacks JOHN ZINK CO 14 Sept 1973 43298/73 Heading F4T A smokeless flare comprises a flare stack within which a gas stream is conducted to the outlet tip for burning thereabove, and means adjacent said outlet tip for directing, into the flame of said burning gas stream, liquid water particles of size less than 200 microns. A plurality of water atomizers 10 are located around and/or within the outlet tip of the stack, each atomizer comprising a pipe 32 feeding water to a plenum 30 around the outlet end portion of a pipe 20 to which part of the gas to be flared is supplied, the gas issuing from an orifice 28 at substantially sonic velocity to atomize the water, liquid water droplets of predominantly around 10 microns diameter issuing from an outlet 24 into regions of the flame whereat the gas is not completely burnt.
Patent GB-1186624-A (GB)
Title: Method for Producing Cardioactive Glycosides
IPC: A61K36/00
Filed: 1967-09-22
Abstract: 1,186,624. Extraction of Adonis vernalis L. SOLCO BASEL A.G. 22 Sept., 1967 [23 Sept., 1966]; No. 43350/67. Heading A5B. A cardioactive glycoside or a cardioactive glycoside-containing material is prepared by extracting leaves of Adonis vernalis L. with water or with water containing a water-miscible alcohol e.g. ethanol, separating the extract and removing solvent therefrom, extracting the residue with a water-miscible alcohol or ketone e.g. ethanol or acetone, removing solvent from the. extract, extracting said extract with a water-miscible ketone if a water-miscible alcohol was used in the preceding extraction step or vice versa, removing solvent from the resulting extract, dissolving the residue in an aqueous medium, successively extracting the resulting aqueous solution with a plurality of mixtures of chloroform or trichloroethylene and an alkanol having up to 4 carbon atoms e.g. ethanol or butanol, said mixtures having volume ratios in the range 9:1 to 2:1, chromatographically separating the extract or extracts obtained at volume ratios within the range 8:1 to 3:1, eluting the chromatographically separated constituents of the extract or extracts and evaporating said eluates to dryness. The leaves may be extracted in a nitrogen atmosphere at a temperature of not more than 100C. and the solvent may be removed from the separated extract by concentrating the resultant solution in vacuo to obtain a residue. The chromatographic procedure may be carried out on a carrier containing silicates, e.g. kieselguhr, diatomaceous earth or sea sand, by using a water-saturated butanol/toluene mixture of a ratio 1:1.
Patent GB-1236436-A (GB)
Title: Grid assembly for concrete reinforcing steel
Inventor: SCHWARZ ALFRED VITEZSLAV
IPC: E04C2/42
Filed: 1968-09-13
Abstract: 1,236,436. Metal reinforcements. A. V. SCHWARZ. 13 Sept., 1968, No. 43623/68. Heading D1K. [Also in Division E1] A frame for supporting and spacing the longitudinal and transverse rods 16, 18 used for reinforcing concrete comprises longitudinal and transverse spaced frame members 13, 14 suitably slotted where they cross to permit interengagement, there being part circular openings in their top edges in which the rods 16, 18 engage and are supported at their respective hights. The frame mambers may have feet 25 secured thereto to support them or the feet may be constituted by separate slotted members located in any desired position. U- shape members 30 may be provided on the base of the members to locate a second layer of reinforcing rods spaced from those supported on the upper surfaces.