baber/WOPTO huggingface dataset:
Patent GB-859299-A (GB)
Title: Improvements in or relating to oscillator circuits incorporating junction transistors
Inventor: HILBOURNE ROBERT ARTHUR
IPC: H03B5/32
Filed: 1958-04-14
Abstract: 859,299. Transistor oscillator circuits. GENERAL ELECTRIC CO. Ltd. April 14, 1959 [April 14, 1958], No. 11846/58. Class 40(6). An oscillator comprises a junction transistor amplifier with a bimorph piezo-electric crystal located in positive feedback path. The Figure shows an amplifier comprising a common collector stage 1 directly coupled to a common emitter stage 2 having a negative feedback resistor 10 in its emitter circuit. A bimorph crystal 13 is connected in a positive feedback path, the arrangement being such that the Q's of the amplifier input and output impedances are not appreciably less than that. of the crystal. The amplitude of oscillation is limited in one direction by the cut-off of transistor 2 which is arranged to occur before saturation in the other direction. Saturation is prevented by a silicon junction diode 14 which is biased to become conducting before saturation occurs, the conduction having the effect of increasing the loading and also of feeding a voltage to the base of transistor 1 which reduces the current in transistor 2. Resistor 8 swamps any changes of input resistance which occur when transistor 2 cuts off while capacitor 7 prevents operation of the crystal in a harmonic mode.
Patent GB-1498903-A (GB)
Title: Aromatic keto-acids and their derivatives
IPC: C07C59/86
Filed: 1975-03-21
Abstract: 1498903 Keto-acids PIERRE FABRE SA 21 March 1975 [25 March 1974 17 Feb 1975] 11888/75 Heading C2C [Also in Division A5] Novel compounds (I)  in which R 1  is H, halogen, phenyl, halophenyl or phenoxy and R 2  is H, OH, alkyl or alkoxy, or R 1  and R 2 , together with the carbon atoms to which they are attached, form a carbocyclic ring, Z is a group of Formula A or B: and R 4  is OH, alkoxy, morpholino or 3-trifluoromethylphenylamino, and, when R 4  is OH, salts thereof with bases, are prepared by reacting itaconic anhydride with an R 1 ,R 2 -substituted benzene in the presence of a Lewis acid catalyst to produce a compound I in which Z has the Formula (A) and R 4  is OH, if desired, rearranging this, e.g. by treatment with triethylamine in ether, to produce a compound I in which Z has the Formula B in which R 4  is OH, and, if desired, converting a resulting acid into an appropriate salt ester or amide. Pharmaceutical compositions having analgesic, anti-inflammatory and hypocholesterolaemiainducing properties, for oral, parenteral, rectal or topical administration, comprise a compound I or a physiologically tolerable salt thereof when R 4  is OH with a base, together with a pharmaceutical carrier or excipient.
Patent GB-1313972-A (GB)
Title: Servo-mechanisms
IPC: G05D3/18
Filed: 1971-04-28
Abstract: 1313972 Control of stepping motors YOKOGAWA ELECTRIC WORKS Ltd 28 April 1971 [30 April 1970 24 March 1971] 11924/71 Heading H2J [Also in Division H3]  A pulse motor is controlled to stop at a position corresponding to the value of input signal E i . Comparator amplifier 3 of linear integrated circuit type receives as input the signal E i  opposed by the signal E f  corresponding to actual rotor position. For one sign of the difference E i -E f , transistor Q 41  conducts, causing the signal level at a to have digital level unity and establishing a direction of rotation for motor 6 decreasing the value of | E i -E f  |. Transistor Q 42  also conducts, and, as | E i -E f  | tends to zero, Q 41  cuts off before Q 42 , the output b of NAND G 40  thus becoming zero and cutting off the pulse motor energization. For rotation in the opposite sense, Q 42  comes on before Q 41  to de-energize the motor. A subsequent change in the value of E i  will engender further motor movement causing E f  to follow E i . Motor energization.-Rectangular clock pulses are generated at CP and divided by two in frequency, by flip-flop FF. NAND gates G 51 -G 54  receive rectangular pulses at the flipflop frequency, and, depending upon the digital value of signal a, the pulses e lead or lag those at f by 90 degrees, respectively to establish the direction of motor rotation. Gates G 51 -G 54  are enabled only when signal b is unity. Development of actual motor position signal E f .-Two coils W b  in series aiding, and two coils W d  in series opposition are wound on both limbs of a saturable core T forming a balanced magnetic circuit which is completed through magnet M rotated by the motor, see Fig. 7 (not shown). Coils Wb, W d  are coupled to form an oscillator whose output is rectified, and via Darlington pair 24, produces a steady current in coils W f , in series opposition, on the core T. The voltage E f  across R L  in series with coils W f  thus corresponds to the magnet position, as does the amplitude of the oscillations. In an alternative driving circuit (not shown) the signal d may feed gate G 52  directly, signal f being fed to EOR 1 , and, in Fig. 8 (not shown), only two NAND gates (G 51 , G 52 ) are used, generator CP and flip-flop FF being reset whenever signal b attains zero. In the embodiment of Fig. 1 (not shown), the rotor drives the wiper of a potentiometer (R 20 ) to derive the signal (E f ) signals (E i ) and (E f ) being fed to the respective inputs of comparator (3), the breakdown voltage of a zener diode D 24  defines the magnitude of ( | E i -E f  | ) beyond which the enabling signal (b) is provided and the NAND gates G 51 -G 54  are in the circuits of the motor windings. The system is used in an automatic balancing recording meter.
Patent GB-209018-A (GB)
IPC: B23G5/06
Filed: 1923-05-05
Abstract: 209,018. Steinr³ck, H. Dec. 23, 1922, [Convention date]. Addition to 196,630. Taps; screw-cutting dies. -In a modification of the s.crew - thread cutters described in the parent Specification, the height of the teeth behind the cutting- edges is in all cases at least equal to the height at the cutting-edges. In a tap having three flutes, Fig. 1, the tooth c<1> which, if cut according to the eccentric core shown, would have a height decreasing from the cutting edge f to the trailing edge f<1>, has its height made uniform by cutting away the shaded portion x from the core. The tooth height may increase from f to f<1>. In a further modification, teeth cut on an eccentric core may alternate with teeth cut on a concentric core, some or all of the latter being cut below the concentric circular core to provide non-cutting guiding teeth. Turning.-The teeth are cut with the aid of a templet l, Fig. 6, which rotates with a tap blank a and controls a turning tool o through a tracer n and a lever mounted on the tool-carriage p.
Patent GB-310657-A (GB)
Title: Improvements in and relating to stands for laundry purposes
IPC: D06F1/00
Filed: 1928-04-26
Abstract: 310,657. Butterfield, C. April 26, 1928. Stands for wringers and wash-tubs.-The stand, which is preferably of metal, comprises a base frame B<1> of which a portion L<1> is formed with a flange L against which the wash-tub abuts. Vertical angle irons A are secured at their lower ends to the base frame and support, at their upper ends, a bar B to which a wringer W or, as shown, a table T can be clamped. Struts A' extend between the vertical supports A and the base frame and pivoted struts T<1> may extend from beneath the table to the struts A'. The struts T<1> may be folded back and held by clips under the table top when not required. A tray S may be supported by guides carried by the stand or, as shown, is secured directly to the supports A and struts A', the rivets T<2> between the tray and struts being extended to engage the slotted lower ends of the struts T'. The tray may be formed with a pocket S<2> to receive the wringer as shown when not in use, or the wringer may be laid on the transverse slats S<3> of which the tray is formed- A second tray D is pivoted to the tray S at C and may be held by catches, not shown. When not in use the tray D is folded to the position indicated in dotted lines. Soap dishes E may be secured to the wringer bar B. A foot piece P is provided for steadying the stand.
Patent GB-1087124-A (GB)
Title: Sintered zinc structure, method of making same, and battery
IPC: H01M4/02
Filed: 1966-03-21
Abstract: A porous sintered zinc body such as a battery anode is made by compacting a powder mixture of oxide coated zinc and ammonium halide and sintering the compact under reduced pressure below the melting point of zinc to effect sublimation of the halide.  The porosity is determined by the amount of ammonium halide in the mixture and porosities over 50% are obtained.  The reactive sintering is carried out at 1-5 mms. Hg pressure and is preferably effected in two stages, the first stage at a temperature from 200 DEG C. below the sintering temperature to the sintering temperature and finally at the sintering temperature.  The chloride, bromide and iodide are the preferred halides.  If the fluoride is used complete sublimation does not occur and the remaining fluoride is dissolved out by treating with water.
Patent GB-401290-A (GB)
Title: Oil-soluble artificial resinous materials and the use thereof
IPC: C08G8/28
Filed: 1932-04-28
Abstract: Oil soluble synthetic resins are prepared by condensing together in acid medium formaldehyde or a polymer thereof and a substituted phenol containing in the para position an alkyl group containing more than one carbon atom and in one ortho group a hydrogen atom, an alkyl group or an oxygen free aralkyl group.  In examples p-isobutylphenol, p-benzylphenol, 2 : 4-dibenzylphenol and p-tertiary amylphenol is condensed with formaldehyde in the presence of hydrochloric acid. The products may be dissolved in oils such as tung, linseed, china wood oils and solvents with or without cobalt linoleate to give a varnish.ALSO:Oil soluble synthetic resins are prepared by condensing together in acid medium formaldehyde or a polymer thereof and a substituted phenol containing in the para position an alkyl group containing more than one carbon atom and in one ortho group a hydrogen atom, an alkyl group or an oxygen free aralkyl group.  In examples, (1) p-isobutylphenol and formaldehyde are condensed in the presence of hydrochloric acid and the product may be heated with tung oil and diluted with white or mineral spirits to form a varnish.  (2) p-Benzylphenol and formaldehyde are condensed in the presence of hydrochloric acid and the product may be heated with a mixture of tung and linseed oils and dissolved in high-flash naphtha containing cobalt linoleate to yield a varnish.  (3) 2 : 4-Dibenzylphenol is condensed with formaldehyde in the presence of hydrochloric acid. (4) p-Tertiary amylphenol is condensed with formaldehyde to yield a product soluble in tung and linseed oils. The product is heated with china wood oil and dissolved in white spirit containing cobalt linoleate to yield a varnish.  The Provisional Specification describes also the condensation of 1 : 2 : 4-xylenol with formaldehyde in the presence of hydrochloric acid to give a product soluble in linseed, tung or soya bean oils.
Patent GB-1262395-A (GB)
Title: Construction of prefabricated building
Inventor: MCGARRY JAMES GERARD
IPC: E04B1/20
Filed: 1970-03-13
Abstract: 1,262,395. Prefabricated buildings; wall panels. J. G. McGARRY. 13 March, 1970 [13 March, 1969], No. 12324/70. Headings E1A and E1B. In a prefabricated building consisting of corner columns 1 and intermediate columns 2 each slotted to receive rising wall panels 8 and wall panels 3 each column is provided with an integral pedestal or footing 10 shaped as shown. The columns are provided with bolt holes 21 whereby the roof rafters and bracing straps may be bolted thereto. The members 1, 2, 3 and 8 are made of re-inforced concrete, assembled on a prepared base and used in association with window, sill and door components, see Fig. 1 (not shown). Each wall panel is provided with an upwardlydirected flange 37, a downwardly-directed flange, moisture sealing lips such as 38 and interfit with one another to exclude water, a sealing compound being used therebetween. An angle-iron 11 with a wooden packing strip 12 is bolted to the column 1 to define the grooves 14 therein. For minor details consisting erection, sealing, reinforcing the Specification and remaining drawings, (not shown), should be referred to.
Patent GB-679585-A (GB)
Title: Process for the manufacture of foam fire extinguishing liquid
IPC: A62D1/02
Filed: 1950-05-17
Abstract: In the preparation of alkaline hydrolysates of fish waste the glutinous substances are separated from the rest of the base material and subjected to a milder or briefer hydrolysis than the other protein substances, both the glutinous and other protein substances being hydrolysed to give maximum foaming properties, and the two hydrolysed substances are mixed together.  The glutinous substances may be separated by boiling the starting material in water or dilute acid, preferably acetic acid, solution and filtering from other protein substances.  The two constituents may be hydrolysed separately or the glutinous substances may be added to the alkaline hydrolysis of the other protein substances after hydrolysis has started and so that on neutralization after combined hydrolysis maximum foaming properties are obtained.  Other materials, e.g. hair waste from tanneries and waste blood, may be added to the fish waste at a predetermined stage in the process so that products with maximum foaming properties are obtained.  The addition of from 5 to 50 per cent of hair waste is mentioned.  The products are foam fire extinguishing liquids.  In an example glutinous substances are removed from fish waste by treatment with aqueous acetic acid and during the hydrolysis of the residue with caustic soda waste hair and the glutinous solution are added the final hydrolysate being neutralized with hydrochloric acid and aluminium sulphate added thereto.ALSO:In the preparation of alkaline hydrolysates of fish waste the glutinous substances are separated from the rest of the base material and subjected to a milder or briefer hydrolysis than the other protein substances, both the glutinous and other protein substances being hydrolysed to give maximum foaming properties, and the two hydrolysates are mixed together.  The glutinous substances may be separated by boiling the starting material in water or dilute acid, preferably acetic acid, solution and filtering from other protein substances.  The two constituents may be hydrolysed separately or the glutinous substances may be added to the alkaline hydrolysis of the other protein substances after hydrolysis has started and so that on neutralization after combined hydrolysis maximum foaming properties are obtained. Other materials, e.g. hair waste from tanneries and waste blood, may be added at a predetermined stage in the process so that products with maximum foaming properties are obtained.  The addition of from 5 to 50 per cent of hair waste is mentioned.  The products are foam fire extinguishing liquids.  In an example, fish waste is boiled with aqueous acetic acid to remove glutinous substances and during the hydrolysis of the residue with caustic soda, waste hair and the glutinous solution are added, the final hydrolysate being neutralized with hydrochloric acid and aluminium sulphate and a preservative added.
Patent GB-591323-A (GB)
Title: Improvements in and relating to the manufacture of oxazole derivatives
Filed: 1945-05-16
Abstract: Oxazole derivatives of the general formula <FORM:0591323/IV/1> wherein R represents an alkyl radical, and R1 and R11 represent lower alkyl radicals, are manufactured by treating a dialkyl ester of an acylaminomalonic acid (wherein the alkyl groups are R1 and R11 and the acyl group is the residue of an aliphatic acid) with a phosphorus halide as condensing agent.  In an example, diethyl n-caproylaminomalonate is refluxed with phosphorus pentachloride in chloroform to produce ethyl 5-ethoxy-2-n-amyloxazole-4-carboxylate. Acylaminomalonic esters employed as starting materials are obtainable by treating the corresponding dialkyl esters of aminomalonic acid with acylating agents.
Patent GB-808620-A (GB)
Title: Free flowing ammonium nitrate
Inventor: JR PAUL O MARTI
IPC: C01C1/18
Filed: 1954-04-28
Abstract: 808,620. Explosive compositions. STANDARD OIL CO. April 28, 1954, No. 12382/54. Class 9(2) Ammonium nitrate particles are coated with a comminuted "H 2 S treated ironferrocyanide" to inhibit caking at atmospheric humidity, the '"H 2 S treated ironferrocyanide" being prepared by contacting iron-ferrocyanide with hydrogen sulphide gas at a temperature between about +20‹C. and about +65‹C. to produce a solid reaction product containing between about 2 and 7 weight per cent of sulphur. Soluble or insoluble Prussian blue is used. The nitrate particles are mixed with the ferrocyanide before or during grinding, which is thereby facilitated.
Patent GB-1390456-A (GB)
Title: Protection of electronic switch devices
IPC: H03K17/082
Filed: 1972-03-16
Abstract: 1390456 Protective arrangements G WEBER 16 March 1972 [16 March 1971] 12385/72 Heading H2K An over-current arrangement for protecting a thyristor 3 connected in series with a load 1 comprises a control resistor 2, an electronic store, such as a flip-flop 4 or transductor, responsive to the voltage drop at the resistor, and a transistor 5 connected to the store and controlling the conduction of the thyristor.
Patent GB-796089-A (GB)
Title: Improvements in or relating to means for controlling the winding of filaments or webs
IPC: B65H23/198
Filed: 1953-05-05
Abstract: 796,089. Automatic speed control systems for web winders. CROWTHER, Ltd., KIMBER, R. A., and COLEMAN, P. E. R. Aug. 5, 1954 [May 5, 1953], No. 12420/53. Drawings to Specification. Class 38 (4). In a system for maintaining a constant linear speed of a filament or web being wound on a roll, a tachometer generator is driven by drum held against the periphery of the roll, and the difference between the generator output and a reference voltage, controls a grid-controlled rectifier supplying the roll-drive-motor. To provide a wide speed control range, changespeed gears may be used in the tachometer generator drive, or with an A.C. tachometer generator, a tapped transformer.
Patent GB-835143-A (GB)
Title: Improvements in or relating to statistical machines
Inventor: EDEN REGINALD RAYMOND
Filed: 1957-04-16
Abstract: 835,143. Selective punching machines. INTERNATIONAL COMPUTERS & TABULATORS Ltd. March 12, 1958 [April 16, 1957], 12463/57. Class 31 (2). [Also in Group XVI] The type-selecting elements 15 of a tabulator control an electrical contact device 28-34 to operate an electrically-operable punch selector connected thereto, operation of the punches being effective through a scanning device, so that upon a total taking operation of the tabulator, electrical energy is passed through active contacts to electrically operate the punches column-by-column. The type-elements 15 are each connected to the contact device through an interposer 16 which is stepped at 17 to co-operate with a stud 18 extending from a support 19 freely pivotal on a rockable spindle 20 in a frame 21. The supports are normally urged into anti-clockwise position by a restoring bail 24. During a total-taking cycle, an interposer restoring member 23 is rocked by a cam actuated by a one-revolution clutch to allow the studs 18 to engage the steps 17 thereby positioning a double contact arm 28 to engage a common conductor 33 and one of the contacts 31. Electrical connection is thereby made to select an appropriate punch solenoid 5, Fig. 5B, to be rendered active for that column. Further cams in the tabulator control scanners 39, 66, 67, 68; scanner 66 is a control scanner which is pulsed by a solenoid 41 and advances the scanner 67 to render a clutch of the tabulator inactive. Scanner 39 is also advanced to actuate the solenoids 5 for each column and scanner 68 is advanced to effect operation of a solenoid 12 which moves the card carriage stepwise to permit setting of punches column-by-column. Specifications 328,255 and 405,666 are referred to.
Patent GB-868555-A (GB)
Title: Improvements in or relating to the production of boron iodide and boron compounds ofgroup v elements of the periodic system
IPC: C01B35/06
Filed: 1958-04-21
Abstract: <PICT:0868555/III/1> Boron iodide is produced by the reaction of an alkali metal borohydride with iodine in an inert solvent in the absence of moisture.  LiBH4 or NaBH4 is added to a solution of iodine in dry n-hexane, in excess of the stoichiometric amount required. The reaction may be carried out at room temperature or be accelerated by boiling under reflux.  After reaction the residual alkali metal hydride together with the alkali metal iodide formed in the reaction is removed by filtration.  Thus the reaction mixture is introduced into a spherical flask 1 connected by connection piece 3, bearing a sintered glass filter disc 3A, to a lower receiving flask 2.  Boron iodide solution passed, by gravity or under vacuum by applying suction at 4, through 3A and collects in the receiver 2 leaving the alkali metal hydride and alkali metal iodide in the connector 3.  The boron iodide solution is concentrated by evaporation preferably in vacuo and the residue crystallised.  Use of the boron iodide so produced in the preparation of semi-conducting boron compounds of the Aiii-Bv-type, where A is boron and B is nitrogen, phosphorus, or arsenic, by the vapour growth process, e.g. <FORM:0868555/III/1> is referred to.
Patent GB-415985-A (GB)
Title: Improvements in the manufacture of cement
IPC: C04B7/42
Filed: 1934-04-26
Abstract: In the manufacture of white cement, the raw materials are mixed with calcium chloride or fluoride or a mixture of the two, the clinker is removed from the hottest zone of the kiln and the clinker immediately cooled either by immersion in water or by steam in a closed vessel screening it from the air.  The proportion of chloride or fluoride may range from 2 to 5 per cent or for a mixture from 2 to 6 per cent.
Patent GB-994667-A (GB)
Title: Improvements in or relating to electric heaters
Inventor: SHARP FREDERICK GEORGE
IPC: F24C7/00
Filed: 1962-04-03
Abstract: 994,667. Imitation solid fuel fires. W. WIGLEY & CO. Ltd. April 3, 1963 [April 3, 1962; Jan. 1, 1963], Nos. 12648/62 and 174/63. Drawings to Specification. Heading F4W. [Also in Division H5] The casing of an electric fan space heater (see Division H5) contains an imitation solid fuel fire and has side walls which slope inwardly towards the back so that the heater can be used in a fireplace opening having either inwardly sloping or parallel sides.
Patent GB-1504854-A (GB)
Title: Photodetectors and thin film photovoltaic arrays
IPC: H01L31/0336
Filed: 1974-03-21
Abstract: 1504854 Photovoltaic devices INTERNATIONAL RESEARCH & DEVELOPMENT CO Ltd 20 March 1975 [21 March 1974] 12648/74 Heading H1K A photovoltaic heterojunction device is formed by selective chemical conversion of a portion of a layer 3 of a first semiconductor material into a second semiconductor material 4 using a mask 5 of photoresist. In the embodiment an n-type layer 3 of CdS is deposited, partly on base metallization layer 2, on a substrate 1, e.g. of glass or high temperature plastics or comprising a glass-resin printed circuit board. A layer 5 of photoresist is deposited and selectively illuminated and removed, and the thus exposed area of layer 3 is subjected to treatment with cuprous chloride, applied by vacuum deposition, spraying or immersion optionally followed by heating, to convert it to p-type Cu 2 S 4 . The photoresist mask 5 is retained as an insulating coating beneath upper metallization 6, which may extend down on to the substrate 1 to contact a conductive strip 7 connected to other devices of a photovoltaic array. Finally a glass layer 8 is attached to the device by transparent resin 9. Other basic semiconductor materials referred to are CdTe and CdSTe, these being convertible to the corresponding chalcogenides of Cu or Ag.