baber/WOPTO huggingface dataset:
Patent GB-1478185-A (GB)
Title: Alpha-substituted benzhydrol derivatives and a process for the preparation thereof
IPC: C07C29/17
Filed: 1974-08-09
Abstract: 1478185 Substituted benzhydrol derivatives RICHTER GEDEON VEGYESZETI GYAR RT 9 Aug 1974 [15 Aug 1973] 35236/74 Heading C2C Novel compounds I (Z is ethyl or vinyl; R 1  and R 2  are H, halo, 1-6 C aliphatic hydrocarbyl, trihalomethyl, NO 2 , CN, optionally etherified or esterified hydroxy or hydroxyalkyl, optionally esterified carboxy, optionally acylated amino or 1-4 C aminoalkyl, 1-6 C alkylamino or optionally etherified or esterified mercapto; R 3 , R 4  and R 5  are as R 1  and R 2  or are cycloalkyl, aryl, aralkyl, dialkylamino, mono- or di-alkylaminoalkyl of 1-4 C, heterocyclic amino-alkyl or heterocyclic amino; with the provisos that (A) when Z is vinyl and four of R 1  to R 5  are H the fifth may not be H or 4-CH 3 ; and (B) when Z is ethyl and (i) four of R 1 -R 5  are H, the fifth may not be NH 2  or N(CH 3 ) 2  at positions 2 or 4, 2-pyrrolidinomethyl, 4-CH 3 O or 4-Br; or (ii) three of R 1 -R 5  are H the fourth and fifth may not represent 2,4- or 3,4-dimethoxy; or (iii) two of R 1 -R 5  are H the other three may not represent 2,4,5- or 2,4,6-trimethoxy; or (iv) two of R 1 -R 5  are H the others may not represent 3,5-dimethyl-4-methoxy; or (v) two of R 1 -R 5  are H, the others may not represent 2-amino-3,5-dibromo; or (vi) four of R 1 -R 5  are H the fifth may not be H or CH 3  other than 2-CH 3 ; or (vii) three of R 1 -R 5  are H, the others may represent 2,5-dimethyl) are prepared by (a) reaction of a compound II with an organometallic compound containing an ethyl or vinyl group; or (b) reaction of a compound III with a phenyl magnesium halide; or (c) reaction of a Grignard reagent IV in which X is halogen, with propiophenone; or (d) reduction of a compound VI or (e) reduction of a vinyl group Z to an ethyl group. Pharmaceutical compositions comprise a compound I together with a suitable carrier and/or diluent and are useful as enzyme inhibitors or inducers and CNS active agents.
Patent GB-950044-A (GB)
Title: Fast opening switch
IPC: H01H35/00
Filed: 1962-09-17
Abstract: 950,044. Cut-outs. UNITED STATES ATOMIC ENERGY COMMISSION. Sept. 17, 1962 [Dec. 6, 1961], No. 35258/62. Heading H2G. A device for rapidly interrupting a heavy current (the supply for a heating coil in a plasma research reactor) consists of a strip of aluminium (or copper or silver) foil 45 carrying the current, the foil having a hole 47 located above the end of a solenoid 34. The solenoid can be energized from a high energy source 61 through a thyratron 63, and the resulting rapid rise in magnetic field disrupts the foil 45 and so interrupts the main current. The solenoid 34 and the metal rods 23, 25 over which the foil is stretched are moulded into a plastics block. Nine alternative materials are suggested. Specifications 844,291, 850,821 and 866,544 are referred to.
Patent GB-1077228-A (GB)
Title: Indirectly heated cathode
IPC: H01J9/04
Filed: 1965-08-17
Abstract: 1,077,228. Indirectly-heated cathode assemblies. SYLVANIA ELECTRIC PRODUCTS Inc. Aug. 17, 1965 [Aug. 17, 1964], No. 35276/65. Heading H1D. A cathode formed with an integral support structure comprises a seamless tubular inner sleeve 53 with two spaced outer metal lamina portions bonded to the sleeve, the said portions being formed of a metal having, compared to the metal of the sleeve, a high heat conductivity, low mechanical strength, good attachability to other metals, and good emission effects on potentially emissive materials, one portion 55 carrying a layer of emissive material 59, and the other 57 being formed for attachment to a support member. The inner sleeve 53 may be of an alloy having a Ni to Cr ratio of 80 : 20, while the outer lamina portions 55 and 57 may be of Ni or Ni alloys suitable as a base for an alkaline earth emissive layer 59 and for welding to a support. During manufacture, the inner sleeve is cladded or plated with an outer lamina, required end portions of which are masked with acid insoluble material while the intermediate portion is etched away in an acid bath. Specific dimensions are given. The cathode structure may be mounted in a triode valve, Fig. 1 (not shown).
Patent GB-1164561-A (GB)
Title: Improvements in or relating to Process for the Production of Organic Ketonic and Carboxylic Compounds
Inventor: HENRY PATRICK MARK
IPC: C07C51/58
Filed: 1967-08-01
Abstract: 1,164,561. Biphenyl. HERCULES Inc. 1 Aug., 1967, No. 35378/67. Heading C5E. [Also in Division C2] In Example 15, biphenyl is obtained in 18À7% yield by reacting CO with a mixture of PhHgCl, CuCl 2  and LiPdCl 3  in acetonitrile, at atmospheric pressure.
Patent GB-296935-A (GB)
Title: Improvements in or relating to the manufacture of highly sulphonated oils, fats, fatty acids, and waxes
IPC: C11C3/00
Filed: 1927-12-30
Abstract: 296,935. Erba Akt.-Ges. Nov. 22, 1927, [Convention date]. Addition to 294,621. Sulphonated oils &c.-The process of the parent Specification for sulphonating castor oils or allied fatty oils in the presence of bleaching agents is used for the sulphonation of other animal or vegetable oils, fats, fatty acids or waxes capable of sulphonation. The process can be applied to polybasic acids such as mucic, adipic or suberic acids and to waxes such as Japan wax, beeswax or carnauba wax. The sulphonation may be carried out with organic sulphonic acids such as #-naphthalenesulphonic acid with or without sulphuric acid. The products may be used for the treatment of textiles and possess a softening power for natural or artificial fibres and spun yarns. Specification 292,574 is referred to.
Patent GB-1159024-A (GB)
Title: Improvements in or relating to Transistor Circuit Arrangements.
Inventor: RICHARDSON ALLAN
IPC: H03K3/012
Filed: 1965-08-18
Abstract: 1,159,024. Transistor bi-stable circuits. PLESSEY CO. Ltd. 15 Aug., 1966 [18 Aug., 1965], No. 35390/65. Heading H3T. A bi-stable circuit comprises a pair of transistors connected as a principal bi-stable element, and a second pair of transistors connected as a memory element which detect the state of the principal element by differential emitter potentials. In a first embodiment, Fig. 1, if bi-stable circuit T1, T2 is in the state where transistor T1 is conducting and transistor T2 is cut off, then application of an input pulse at T7 will switch on transistor T4 to trigger the bistable circuit to its other state. The input pulse holds T4 conducting and T3 cut off as an indication of the previous state of the bistable circuit. The circuit can be reset from one state to the other if required by pulses on T5, or T6. In a modification, Fig. 2 (not shown) the coupling resistors are replaced by diodes. In a second modification, Fig. 3 (not shown), separate set and reset signals are applied to the cross-coupled transistors (T16, T17) in the memory circuit so as to form a pulse sequence detector. In a further modification, Fig. 4, the change over time is speeded by the inclusion of transistors T6, T7, which short out part of the collector loads of the bi-stable circuit transistors T2, T3 when they are being switched.
Patent GB-807808-A (GB)
Title: Polyurethanes
IPC: C08G18/32
Filed: 1956-11-20
Abstract: A method of producing thermoplastic polymeric materials suitable for the production of flexible films comprises reacting a mixture containing primary and secondary aliphatic glycols, each of which contains at least 4 carbon atoms between the hydroxyl groups, with a compound from the group consisting of aliphatic diisocyanates, aliphatic diisothiocyanates and mixed aliphatic isocyanates, aliphatic isothiocyanates containing two groups of the formula -N=C=X separated by at least 4 carbon atoms and where X is oxygen or sulphur.  In one embodiment the glycol in a liquid medium in which the polyurethane product is insoluble is heated at 60 DEG  to 70 DEG C. and the diisocyanate is slowly added, the product being filtered off when capable of yielding a film having the properties desired. The products are insoluble in acetone, methanol, benzene, tetralene, xylene, mesitylene, chlorobenzene, o-dichlorobenzene and 1,3,5-trichlorobenzene and soluble in phenol, cresol or a 90 per cent phenol-10 per cent water mixture at room temperature and in hot dimethyl formamide, pyridine or cyclohexanol.  The products are thermoplastic and can be melt extruded or cast.  Suitable glycols are polymethylene glycols, polyether glycols of the formula HO(CH2)nO(CH2)nOH, where n is at least 2, such as 2,5-hexane diol, 2,6-heptane diol or 2,7-octane diol; mixed primary and secondary glycols of the general formula HOCH2(CH2)nCH(CH3)OH, where n is at least 2, such as 1,6-heptanediol, 1,6- or 1,7-octanediols or 1,7-nonanediol; and cyclic glycols such as 1,4-cyclohexylene glycol. Suitable diisocyanates are tetra-, penta- and hexa-methylene diisocyanates, cycloalkylene diisocyanates, e.g. cyclohexylene - 1,4 - diisocyanate, diisocyanates containing hetero atoms, e.g. OCN(CH2)2-O(CH2)2NCO and OCN(CH2)3O(CH2)3NCO, mixed isocyanate-isothiocyanates such as 1-isocyanato - 6 - isothiocyanato hexane, and diisothiocyanates corresponding to the diisocyanates mentioned above.  Up to 1.05 mols. of diisocyanate per mol. of total glycols can be used.  Examples describe preparations of polyurethanes by the above methods from various proportions of tetramethylene glycol, 2,5-hexanediol and hexamethylene diisocyanate.  The products are formed into films by melt casting.  They can also be formed into films or used to coat cloth, paper, metal, leather and other films.
Patent GB-1532623-A (GB)
Title: Ashtrays
IPC: A24F19/00
Filed: 1975-10-22
Abstract: 1532623 Ash tray L J SUTTON 22 Oct 1975 [10 Aug 1974] 35439/74 Heading A2M An ash tray 11 comprises an outer wall 13 and an inner wall 14, the upper edge of each wall being too narrow to balance a cigarette thereupon, and the inner wall having a plurality of recesses 15, 16, 17, 18 in which a cigarette may be biased. Such an arrangement is stated to make impossible for a burning cigarette to fall out of the ash tray.
Patent GB-1271506-A (GB)
Title: Improvements in or relating to fermenters
Inventor: SHEPHERD PETER GUY
IPC: C12M1/08
Filed: 1968-07-26
Abstract: 1,271,506. Fermenters. BRITISH PETROLEUM CO Ltd. June 24, 1969 [July 26, 1968], No. 35717/68. Heading C6F. A fermenter has a rotatable stirrer located in the lower half to stir liquid broth, and a rotatable paddle in the upper half for driving foam generated above the surface of the liquid broth back into the liquid broth. Stirrer and paddle may be of identical form and mounted on the same power-driven shaft. The paddle may be a flat bladed disc turbine type impeller having a diameter 0À25-0À5 that of the fermenter. The depth of the paddle in the liquid and the rotational speed determine whether the foam is returned to the body of the liquid through the central part of the paddle (i) in simple circulation or (ii) by a vortex action at the surface. The depth of the paddle below the liquid level (in use) should not be more than twice the paddle diameter. The required liquid level in relation to the position of the paddle may be maintained automatically. An example is directed to the use of the fermenter in the cultivation of the yeast Candida lipolytica in the presence of a mixed straight chain paraffin substrate.
Patent GB-1179670-A (GB)
Title: Improvements in or relating to Friction Clutches
IPC: F16D13/69
Filed: 1968-07-26
Abstract: 1,179,670. Friction clutches. FICHTEL & SACHS A.G. 26 July, 1968 [29 July, 1967], No. 35786/68. Heading F2C. In a spring-engaged twin plate friction clutch in which two driven friction discs 7a, 7b are axially spaced between a flywheel 3 and pressure plate 6 by an intermediate plate 8 rotationally connected to the flywheel/housing assembly 1, 2, 3 by tangentially arranged laminated spring straps 11, and clutch disengagement is effected by the usual throw-out bearing 4 acting through the usual release levers 5 fulcrumed on the clutch housing 1, the intermediate plate 8 is moved, on clutch disengagement, by clutch release springs 20 to effect complete release of the friction discs 7a, 7b, the spring release movement of the plate 8 being restricted to half the disengaging movement (h/2, Fig. 3) of the pressure plate 6 by stop members 21-23 frictionally mounted in peripheral holes in the plate 8 and acting between the flywheel 3 and stop faces 16 formed on an intermediate clutch housing ring 2. The stop members comprise headed pins 22, connected by a core sleeve 23, with their heads forming stop faces and their shanks arranged within a split expansion sleeve 21 frictionally engaged in a hole in radial projections 14 of the plate 8, the total frictional grip of the stop members in the plate 8 being greater than the release springs 20 but less than the main clutch springs 31 whereby the intermediate plate is automatically ad justed towards the flywheel to counteract wear on the driven disc 7a, spacer bolts 17 serving to limit the movement to the maximum permissible wear on the friction disc 7a whereby damage to the flywheel and intermediate plate by overworn friction discs is avoided.
Patent GB-818912-A (GB)
Title: Improvements in or relating to diazotype materials
IPC: G03C1/60
Filed: 1954-09-15
Abstract: 818,912. Diazotype materials. OZALID CO. Ltd.. MURRAY, H. D., TANENBAUM, A., and ROYER, R. P. Dec 15, 1955 [Sept. 15, 1954; Dec. 15, 1955], Nos. 35933/55 and 35972/55. Divided out of 818,911. Class 98(2) A light-sensitive diazotype material comprises a support coated with a mixture of a water-soluble diazonium compound and a finely divided water-insoluble particulate substance carrying groups capable of cationic exchange, and a substance which is capable, on heating, of reducing the acidity of the light-sensitive layer, so as to permit coupling between the diazonium compound and a coupling component. The cation exchange substance may be an aluminium silicate such as bentonite, or a synthetic resin such as sulphonated phenolic resin, a polycarboxylic resin, a unifunctional cross-linked sulphonated polystyrene or a unifunctional cross-linked polymethacrylic resin containing only carboxyl groups capable of cationic exchange. Resins specified are Amberlite and Zeo- Karb (Registered Trade Mark). The substance capable of reducing the acidity on heating may be urea, N-methyl urea or thiosinamino, and it may be added to the sensitizing solution or applied ta the dried coated support before or after exposure, e.g. in powdered form or on a separate support. The azo coupling component may be included in the sensitizing composition or applied to the dried coated support prior to or subsequent to its exposure, e.g. in powder form or on a separate support. The sensitizing solution may contain a thickener or binder, such as dextrin, and the usual inhibitors. After exposure and if necessary, treatment with the coupling component, the materials are developed by heating at temperatures from 115 to 175‹C. Specifications 817,001 [Group IV(b)] is referred to.
Patent GB-1263789-A (GB)
Title: Key controlled pulse generator
Inventor: SELDEN OTTO CARL
IPC: H03K3/45
Filed: 1969-07-17
Abstract: 1,263,789. Reciprocating generators. O. C. SELDEN. 17 July, 1969, No. 36073/69. Heading H2A. In a dynamo-electric pulse generator, a coil 8 is wound on one limb of a magnetic circuit which includes a permanent magnet 12 and a movable armature 20, the armature being pivoted about a point 33 in the magnetic circuit and having two stable positions, movement from one position to the other being initiated by operation of a key 28, 29 and causing a change in the size of an air gap in the magnetic circuit so as to generate a pulse in the coil. The air gap is formed between the end 24 of a core 6, on which the coil is wound, and the end 25 of the armature 20. The armature has a projection engaging a slot 38 in the key slide 29 so that depression of the key causes the armature to snap down on to the core end 24 under the toggle action of spring 23, and thus cause a pulse to be generated in the coil. The key is automatically returned under the action of spring 36, thereby returning the armature to its first stable position. A brass shim 41 on the armature prevents complete closure of the air gap. A shield 17 slidable on the permanent magnet enables the magnitude of the output pulse to be adjusted. The key may be part of the keyboard of data processing equipment, in which case the output pulse may be supplied to a coding circuit to produce a required combination of binary digits. In Fig. 1 a significant pulse is generated in the coil only on depression, not on the return, of the key. In a modification (Fig. 4, not shown) a second coil and associated core is provided, forming a further air gap between this second core and the armature so that a pulse is generated in this second coil during the return action of the key.
Patent GB-366195-A (GB)
Title: Clamp and guide for fitting scarfed piston rings
IPC: B25B1/24
Filed: 1930-12-01
Abstract: 366,195. Reciprocating filing-apparatus. McCARTHY, A., 142, Hampstead Way, London. Dec. 1, 1930, No. 36140. [Class 83 (iii).] A clamp has the upper parts 2 of the plates 1 turned out at right-angles and provided with angular extensions 3 serving as guides for use in filing or grinding down the scarfed ends 9 of piston rings 8 held in the clamp. The plates 1 are hinged at 4 and held together by a sleeve spring 5 engaging grooves 6.
Patent GB-416914-A (GB)
Title: A method of frequency conversion of alternating currents by means of vacuum apparatus
IPC: H02M5/00
Filed: 1932-12-21
Abstract: 416,914. Changing frequency. SIEMENS - SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Dec. 21, 1932, No. 36234. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 23, 1933]. Drawings to Specification. [Class 38 (ii).] In a frequency changer in which two polyphase grid-controlled rectifiers are used respectively to build up the positive and negative half waves of the lower frequency, at least two anodes are associated with each secondary phase of the transformer connected to the network of higher frequency, and are connected to different points on the transformer winding, the grids controlling the anodes of lower voltage being rendered positive earlier than those controlling the anodes of higher voltage thus enabling the wave form of the lower frequency to be made substantially sinusoidal without introducing limitation to a fixed ratio between the two frequencies.
Patent GB-344387-A (GB)
Title: Improvements in flyer mountings for spinning and like textile frames
IPC: D01H7/40
Filed: 1929-11-28
Abstract: 344,387. Spinning spindle-apparatus. BENSON, A. L., 28, Cowgate, Dundee, Nov. 28, 1929, No. 36409. [Class 120 (ii).] In spinning, twisting, doubling, roving, and like frames wherein the flyers are mounted in bearings concentric with the spindles, the flyers are mounted in pivoted members so that they may be lowered on to, or lifted away from the spindle. The flyer 1 is supported by the inner race 2 of the ball bearing, the outer race of which is secured to the lever 5, 6. The flyer may be provided with a transverse pin 4 which engages a notch in the spindle 3, or with a boss having a polygonal recess adapted to engage the correspondingly shaped end of the spindle.
Patent GB-1117363-A (GB)
Title: Polyamides
Inventor: NEWPORT JOHN PRESCOTT
IPC: C08G69/40
Filed: 1965-08-25
Abstract: The invention comprises polyamides having a major proportion of recurring units of formula <FORM:1117363/C3/1> where x is an integer and y = 0, 1 or 2; x may be 2-5.  They may be prepared from the corresponding diamine and dicarboxylic acid or amide-forming derivatives thereof by an interfacial technique. A base, e.g. an alkali or alkaline earth metal oxide, hydroxide or carbonate or a tertiary amine may be present. Minor amounts of other diamines, dicarboxylic acids and tri-functional compounds may also be present. The product may be filtered off, washed and dried and used as a size or antistatic material or made into films, fibres or moulded articles.  In examples, pentamethylene diamine and NaOH are dissolved in water and reacted with bis-(p-carboxyphenyl) ether, 1,2- bis - (p - carboxyphenoxy) ethane or 1,4- bis - (p - carboxyphenoxy) butane in CH2Cl2.
Patent GB-1526419-A (GB)
Title: Static storage elements for electronic data stores
IPC: G11C11/412
Filed: 1975-09-05
Abstract: 1526419 Semiconductor storage element SIEMENS AG 5 Sept 1975 [26 Sept 1974] 36566/75 Heading H3T A static storage element for an electronic data store substantially as shown consists of complementary-channel FETS, two T 1  T 3  of one type and two T 2  T 4  of the opposite conductivity, the gate of the first transistor T, being connected to a word line 15 and its source or drain connected to a bit line 15. The inherent circuit capacitances are shown as 17, 18 while lines 13 and 14 are first and second supply lines, the latter connected only to the drain or source of the third transistor T 3 . In two different embodiments the second supply line may be connected to the bit line 16 (Fig. 2, not shown) or to the word line 15 (Fig. 3, not shown). In operation, to read-in data present on the bit line 16, the word line 15 is actuated passing the data to the circuit capacitor, charging it to, say, 4 volts for a "1" and to 0 volts for a "0". In the case of a logic 1, transistor T 3  is turned on and capacitor 18 is charged to zero volts, thus turning T 2  on and charging C 17  to the supply voltage, say 5 V. In the case of a logic 0, transistor T 4  is turned on and capacitor 18 is charged to the supply voltage turning T 2  off and ensuring that C 17  remains at zero voltage. To read-out the stored data the word line is actuated, and the bit-line capacitance (not shown) is charged via T 2  if a "1" is stored, or left at zero volts for a "0" to compensate for any charging current that might raise the voltage on C 17  above zero. A compensation current between point 19 and earth is produced by one of the following elements (not shown): a resistor, a diode in the blocking direction, a transistor having a small channel length. Alternatively this current can be produced by the first transistor T, by arranging that when neither write-in nor read-out is taking place, the bit line is connected to earth and either T, has a small channel length or the voltage on the word line does not fall below the threshold value of the transistor T 1 . When the bit line is used also as the second supply line (Fig. 2, not shown) a diode clamp (20) has to be provided to prevent the static state of the store being lost during read-out of a logic "1". The diode can be in the form of a MIS transistor.
Patent GB-619577-A (GB)
Title: Process for making 1:4-dicyanobutene
Filed: 1946-12-13
Abstract: 1 : 4-Dicyanobutene is prepared by the reaction in the presence of a copper compound of hydrogen cyanide and a compound of the formula CH2R-CHR1CH=CH2 where R and R1 may be OH, CN, halogen or together may be oxygen and may be the same or different provided both are not halogen or CN.  The product 1 : 4-dicyanobutene may be reduced to hexamethylene diamine.  In examples (1) 1 : 2-epoxybutene-3 reacts with hydrogen cyanide in the presence of cuprous chloride to give 1 : 4-dicyanobutene and (2) 1 : 2-dihydroxybutene-3; (3) 1-cyano-2-hydroxybutene-3; (4) 2-cyano-1-hydroxybutene-3 and (5) 1-chloro-2-hydroxybutene-3 or 1-hydroxy-2-chlorobutene-3 react as in (1) to give the same product.  1-Cyano-2-hydroxybutene-3 is prepared by the reaction of hydrogen cyanide on 1 : 2-epoxybutene-3 in an aqueous suspension of calcium hydroxide.  2-Cyano-1-hydroxybutene-3 is prepared by the action of sodium cyanide on 2-chloro-1-hydroxybutene-3 in aqueous alcohol.  The Provisional Specification states that R and R1 may be -O Acyl groups.