baber/WOPTO huggingface dataset:
Patent GB-1283924-A (GB)
Title: Improvements in or relating to rapid bridge construction
Inventor: KNIGHT DEREK IAN
IPC: E01D19/00
Filed: 1968-09-20
Abstract: 1283924 Prefabricated portable bridge DEFENCE SECRETARY OF STATE FOR 18 Sept 1969 [20 Sept 1968] 44732/68 Heading E1G A bridge span 1 assembled from two or more prefabricated sections is installed across an obstacle, e.g. a river, by projecting the span completely or partially over the obstacle, operating jacks 21 to lower supporting piers through tubular hip members 12 which are connected to the span 1 at one or more positions therealong, the jacks 21 being mounted on the hip members 12 and having means for operatively engaging the piers, and finally securing the piers to the hip members to take the load of the span. The piers may each comprise a plurality of end-connected leg units 10, and are constructed downwardly from the span 1 by successively manhandling each leg unit 10 into its respective hip member 12, temporarily suspending it there by pins 24 engaging slots 14 in the hip member and holes 11 in the leg unit, pinning on the next leg unit above, extending the jack rod 26 carrying a support bracket 18b to engage further pins 24 in the leg unit, removing the temporary pins, and retracting the jack rod to lower the leg unit. When the pier is complete, the jack is extended, the bracket 18b is pivoted through 180‹ to engage pins 24, and the jack is retracted to lift the span 1 to remove sag. The hip member is then attached to the pier by a further bracket 18a. Whilst the first leg unit 10 is still in the hip member, a foot 16 may be connected thereto by a frangible link 28. In a modification, the completed pier is pinned directly to the hip member in a manner to allow limited angular displacement (Fig. 11, not shown). In the case of a wide obstacle, after partial projection of the span and construction of piers, fastenings 27 attaching the span 1 to a cross-beam 13 carrying the hip members 12 are released, and the span is slid further across. The span sections may be joined together by a device allowing angular adjustment thereof (Fig. 6, not shown).
Patent GB-1316559-A (GB)
Title: Transistors and production thereof
IPC: H01L27/00
Filed: 1970-04-23
Abstract: 1316559 Semi-conductor devices KOGYO GIJUTSUIN 23 April 1970 [18 Sept 1969] 44998/72 Divided out of 1313829 Heading H1K The active P-type base region 43-1 of a lateral bipolar transistor is formed by thermal redistribution of relatively fast diffusing P-type impurities from an N-type layer 41 produced in a P-type substrate 43 by the diffusion of relatively slow diffusing N-type impurities. The base region 43-1 forms in an N-type layer 42 epitaxially deposited into a recess etched completely through the layer 41 to the remaining P-type part of the substrate 43. The layer 41 provides the emitter of the transistor while the N- layer 42 provides the collector. The latter region contains anN <SP>+</SP> contact region provided by selective diffusion or by control of the epitaxial growth process of the layer 42. A gate electrode may additionally be provided over the insulating film 47 covering the active base region 43-1 to control the surface potential of the active base region.
Patent GB-1447684-A (GB)
Title: Method for producing a natural fertilizer and apparatus therefor
IPC: C05F3/00
Filed: 1973-09-26
Abstract: 1447684 Natural fertilizer B KRATZER 26 Sept 1973 [26 Sept 1972] 45068/73 Heading C1B Natural fertilizer is produced by a process comprising (1) treating animal excreta in liquid form with mineral acid until a pH of 0À1 to 2 is attained and maintaining such pH constant, (2) agitating the product of (1) for 24 to 60 hours to decompose same, (3) separating the liquid phase from the solids, (4) adding a base to achieve a pH of at least 5 and (5) separating any precipitate formed after step (4) and recovery the resultant liquid. Both liquid and solid excreta may be used as the starting material, e.g. poultry dung, horse, cow, sheep and pig dung and urine, or mixtures thereof. Water may be added prior to the addition of mineral acid. The product may be used as a liquid or as a solid after drying.
Patent GB-1021517-A (GB)
Title: Process for printing textiles
Inventor: SCHMIDT WOLFGANG
IPC: D06P1/66
Filed: 1962-11-29
Abstract: Textile printing pastes contain water-soluble anionic dyestuffs which are converted before the fixing process into difficulty soluble or insoluble compounds and these compounds are subsequently converted, on the fibre, to a form which is capable of dyeing the fibre, said conversion being effected by a heat treatment in the presence of water.  The said difficulty soluble or insoluble compounds may be obtained by reaction of the dyestuffs with organic nitrogen bases and/or their salt-like compounds (other than unsubstituted guanidine and unsubstituted guanyl urea) which contain at least one grouping of the formula <FORM:1021517/D1-D2/1> wherein X1 and X2 which are the same or different are H atoms or alkyl or aryl groups.  The specified nitrogen bases are methyl isourea, benzamidine, 2-methyl-phenyl-guanidine, 1,1-dimethylbiguanide, phenyl-biguanide, 1,3-or 1,4-phenylene-bis-guanide, nitro-guanyl-urea, benz-oxazolyl-, imidazolyl- and thiazolyl-guanidine, hydrochlorides thereof, methyl isourea methyl sulphate, and 1,1-dimethyl-guanidinium chloride.  The dyestuffs may be substantive, acid or metal complex dyestuffs.  An after-metallizing step may be introduced after fixation-see Example 3.  Three particular embodiments are described as follows: (I) A print paste is applied which contains the dye compounds and the textile is dried, padded, printed all over, sprayed or sprinkled with an aqueous bath and then heated with steam at 100-120 DEG C, by passing over hot metal surfaces or through hot metal or oil baths. (II) A print paste containing the water-soluble dye is applied and, after drying, the aqueous bath which now also contains the nitrogenous base is applied followed by the heat treatment and (III) a print paste which contains both the dye and the nitrogenous base added separately is applied, dried and treated as above.  The print pastes may also contain known thickeners, acids, acid-reacting salts, bases or basically-reacting salts, hydro-tropic and/or hygroscopic agents, oxidation agents and surface active agents of various kinds. In the case of printing synthetic polyamides a swelling agent, e.g. phenol or resorcinol, may also be used.  The said aqueous baths may contain neutral electrolytes and/or buffer mixtures as well as the other additives listed above.  The process may be applied to textiles of cotton, viscose, silk, wool and synthetic polyamides.  Optical brightening agents may also be applied either in the print paste or from the aqueous bath.  Examples are given.
Patent GB-1362483-A (GB)
Title: Telephone switching equipment
IPC: H01H67/24
Filed: 1972-10-03
Abstract: 1362483 Electromagnetic selector switches; electric components STANDARD TELEPHONES & CABLES Ltd 3 Oct 1972 45471/72 Headings H1L H1N and H1R A co-ordinate matrix of sealed reed contact relays includes two boards 1, 2 of insulating material arranged parallel to each other with the relays 4, 9, between them and each mounted by one of its ends, some on one board and some on the other board in alignment with a hole 8 in the board on which it is not mounted so that a relay or a contact unit thereof can be removed via the hole 8 after it has been detached from the board on which it is mounted. The boards 1, 2 carry printed circuit wiring 7 for relays mounted thereon and further separate wiring is connected to the unmounted ends of the relays. The further separate wiring is in the form of a flexible printed circuit member 11 having a flap 13 which can be folded back when its connectors are uncoupled from the relay and area 24 is severed.
Patent GB-1473196-A (GB)
Title: Method of producing forms suitable for airline ticketing
IPC: B41L1/24
Filed: 1974-10-21
Abstract: 1473196 Continuous business forms D J STEIDINGER 21 Oct 1974 45479/74 Heading B6A To reduce the amount of edge trimmings from continuous business forms, only exterior plies have margins provided with transport perforations. A bottom web 210 is fed continuously, and narrower intermediate webs 220-222 and 232-235 are superposed thereon between the margins thereof. A top web 219, which may be narrower than, or as wide as the bottom web, is also superposed and all the webs are registered by pin belts engaging register openings 244, Fig. 1, punched in the webs prior to advancement and superposition. The webs are adhered by adhesive, e.g. 226, which passes through adhesive openings (228) provided in some of the webs prior to advancement. At least some of the webs are also provided with printing, carbon coating and transverse lines of perforation 223, 224 prior to advance. The superposed webs are slit along transverse lines 214-216 which terminate inside the margins of the bottom web. These slits and the perforation lines 223, 224 define stubs.
Patent GB-1428148-A (GB)
Title: Pulse generator in a metal-working spark erosion machine
IPC: B23H1/02
Filed: 1973-09-29
Abstract: 1428148 Electro-erosion KHARKOVSKY ORDENA LENINA POLITEKHNICHESKY INSTITUT IMENI VI LENINA 29 Sept 1973 45636/73 Heading B3V A pulse generator in a spark erosion machine capable of producing power pulses and protective pulses comprises a power supply 3 connected to a first resistor 2, an oscillatory circuit 12 including a storage capacitor 7 and the spark gap 4 and a controllable gate device 6 connected in series with a second resistor 5 and in parallel with the circuit 12. In one embodiment, a thyristor 8 is switched on by a pulse from a control system (not shown) to cause the capacitor 7 to be charged. Thereafter, a thyristor 9 is switched on to initiate a power pulse across the spark gap 4, at the end of which a thyristor 6 is turned on to initiate a protective current pulse passing from a power supply 14 through the gap 4. When the thyristor 8 is turned on again, the capacitor 7 is recharged, after which the thyristor 9 is turned on to cause the voltage across the capacitor 7 to be applied to the thyristor 6 to switch it off. In other embodiments, two pairs of thyristors (8-11) (Fig. 1, not shown) are used and the spark gap 4 is connected directly to the power supply 3 (Figs. 1 and 2, not shown). Thyratrons may alternatively be used.
Patent GB-1377076-A (GB)
Title: Optical stabilizer having hydraulically moved light deflecting  lenses
IPC: G03B19/18
Filed: 1971-10-29
Abstract: 1377076 Stabilized optical systems OPTICAL RESEARCH & DEVELOPMENT CORP 29 Oct 1971 45896/71 Heading G2J To stabilize an optical system, a lens C 1  (and in the embodiment illustrated a further one C 2 ) is arranged in a fluid filled cavity B and is of neutral transparency. It is biased by ring magnets 90 acting on the magnetic ring 70 (additionally extra magnets 91 and the "tethers" 94 may be provided for wind restraint). The optics are such, formulae are given in the Specification, that the optical path through the assembly is independent of the deviation from the horizontal, the initial movement of the fluid in the chamber acting as a compensating force.
Patent GB-1348330-A (GB)
Title: Clutch system
IPC: F16D23/14
Filed: 1971-10-05
Abstract: 1348330 Clutch-brake combinations; fullface disc brakes; cooling FICHTEL & SACHS AG 5 Oct 1971 [9 Oct 1970] 46289/71 Headings F2C F2L and F2E A clutch-brake combination for a motor vehicle comprises a clutch having a driven disc 2 which is normally clamped between a presser plate 4 and a driving flywheel 3 by a diaphragm spring 6 which is acted upon by a release mechanism 7, 8, 9 for clutch disengagement and a brake 11 which is arranged on the opposite side of the release mechanism and engaged thereby during clutch disengagement to brake the driven shaft 1 and facilitate ratio shift in a following change speed gear. A rotatable brake disc 14 between non-rotatable discs 15, 16 is integral with a sleeve 13 having radially inwardly directed teeth 18 engaging splines on the driven shaft 1. An axially slidable clutch and brake operating sleeve 8 has a flange 12 which acts on the disc 16 to clamp the rotatable brake disc 14 against a spring biased reaction plate 15. Cooling oil may be supplied to both the clutch and brake through ducts 28, 25.
Patent GB-989690-A (GB)
Title: Box files
IPC: B42F7/14
Filed: 1963-02-07
Abstract: 989,690. Filing papers. C. TAYLOR. April 6, 1964 [Feb. 7, 1963], No. 46382/63. Heading B6E. A box file having a spring retaining clamp 121 is characterized in that the free ends 126 of the clamp and the ends 134 of the springs engage in vertical slideways 111 and 112, respectively, in a pair of blocks 11. The slideways 11 are cutaway at 113 to form shoulders engageable with the cranked portions 127 of the clamp. The blocks 11 are formed separately from the box, or, moulded in situ. The two springs 13 may be replaced by a single duplex torsion spring.
Patent GB-1482553-A (GB)
Title: Television field deflection circuit
IPC: H04N3/16
Filed: 1974-10-28
Abstract: 1482553 Field deflection circuit PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 28 Oct 1974 [31 Oct 1973] 46559/74 Heading H3T A sawtooth deflection current generator for field deflection coils Ly, has a separate sawtooth generator connected to the first input of an amplifier, possibly via a height control 7 whose output 3 is connected to the coils from the other side of which a D.C. feedback path R s  is taken to a second separate input 2 of the amplifier, a second feedback path R p , C f  to pass A.C. is taken to the same input and a third feedback path C s , R n  passing A.C. is clamped to ground via a field rate operated clamp. Feedback is taken from a capacitor C b  in series with the deflection coil to provide a parabolic voltage to the first and second inputs by the 3rd and first paths respectively. Alternatively the third path may also go to the second input. The clamp may be a series resistor R n  with a diode D, or a series resistor R n  with a transistor (T, Fig. 6, not shown). A transistor and a diode may be used (Fig. 7) and there may be an inverting stage with the feedback fed to the second input of the amplifier (Fig. 8). The clamp S in the generator may be used, avoiding the need for a second clamp (Fig. 9, not shown). Feedback of the parabolic component is passed via a capacitor (C s ) to appear across sweep capacitor (C c ) in the generator and the component is passed to the first input of the amplifier A. The parabolic component is also passed to the second input by the resistance capacitance network (R s , C f , R p ). For compensation the feedback capacitor must have a value such that where V in  and V gen  allow for the change in amplitude between the signals on the sweep capacitor (V gen ) and at the first input (V in ).
Patent GB-920605-A (GB)
Title: Improvements in or relating to magnetic dictation appliances
IPC: G11B25/06
Filed: 1961-12-29
Abstract: 920,605. Magnetic sleeve recorders. PHONO-ELECTRIC A.G. Dec. 29, 1961 [Feb. 9, 1961], No. 46586/61. Class 40 (2). A machine using foldable, grooved, sleeve-form records, has a radially-expandible drum 9, comprising four quadrants 55 normally expanded to grip the sleeve by means of springs 63 and cones 57, 58, the whole drum rotating about a fixed cantilever spindle 38 to enable the sleeves to be loaded over the L.H. end of the drum. A layshaft 34, driven by a motor (Fig. 2, not shown) contacts either of two solenoid-disengaged rollers 90, 91 to produce a slow forward or a fast, back-spacing drive by engaging the diameters 88, 89 of the R.H. drum-cheek 60. A release-knob 14, connected to a cross-pin 74, engaging a face-cam 75, as shown developed in Fig. 5, withdraws the L.H. drum-cheek 59 and at the same time actuates a pull-rod 53 and linkage 49 to rock the head 47 about its upper guide-rail 42 to clear the drum. Finger-pressure at 12 may also release the head for sideways movement without releasing the grip of the drum on the sleeve.
Patent GB-1446977-A (GB)
Title: Degradable plastics compositions
IPC: C08L33/02
Filed: 1974-10-29
Abstract: 1446977 Degradable polymer compositions BAYER AG 29 Oct 1974 [31 Oct 1973 (2)] 46674/74 Heading C3P Degradable compositions comprise (A) conventional thermoplastics materials and (B) transition metal complexes comprising transition metals bound in complex form through 1,3- dicarbonyl groups attached to polymers. The complexes may be prepared by reacting polymers containing 1,3-dicarbonyl groups with transition metal compounds, which polymers may be obtained by reacting diketene with polymers containing hydroxyl, mercapto, primary or secondary amine, hydrazide, acid amide or acetal groups or aromatic ring systems, or with monomers containing such groups or systems and then polymerizing the reacted monomer, optionally with monomers free from 1,3-dicarbonyl groups. In examples diketene is reacted with (1) hydrolysed ethylene/vinyl acetate copolymer, (2) hydrolysed ethylene/ vinyl acetate copolymer esterified with rnercaptoacetic acid or (3) polystyrene, or with hydroxy-propyl methacrylate and the product (5 and 6) polymerized or (4) copolymerized with styrene, and (7) hydrolysed ethylene/vinyl acetate copolymer and (8) hydroxypropyl methacrylate are transesterified with ethyl acetoacetate and the latter product copolymerized with styrene; copolymers (1) and (4) are reacted with iron chloride, stearate, naphthenate, ethyl acetoacetate or acetylacetonate; manganese stearate; cobalt octoate; copper chloride, stearate, oleate or naphthenate; nickel chloride; chromium chloride or zinc chloride, and polyethylene, polypropylene and polystyrene are rendered degradable by incorporation of complexes or their precursors, optionally with other prodegradants, e.g. isopropyl benzophenone.
Patent GB-1490739-A (GB)
Title: System for reading acoustic images
IPC: H04N3/10
Filed: 1974-10-30
Abstract: 1490739 Acoustic image converter THOMSON-CSF 30 Oct 1974 [31 Oct 1973] 47051/74 Heading G1G [Also in Division H3-5] An acoustic energy distribution I(x) is analyzed by a device comprising a Piezo-electric substrate 11 having spaced along one surface thereof an interdigital electrode array 12 and at least one transducer 13 or 14. A pump signal of frequency αp is applied to the array 12 or transducer 13 (or 14) to produce substrate surface strains which interact non-linearly with the incident acoustic energy of frequency α s  to produce surface waves at the sum or difference frequency. These surface waves are picked up by the transducer or array, band-pass filtered to extract e.g. the sum frequency, then applied to a utilization device. The analyzing device is operable in three modes. In the first, the pump signal is a pulse applied to array 12 to generate surface strains simultaneously over the whole area of the device. Providing the electrode spacing of the array is matched to the sum or difference frequency a surface wave at that frequency propagates towards transducer 13 or 14. The transducer output represents the incident intensity I as a function of time; i.e. the device effectively scans the incident energy distribution linearly in the x dimension. In the second mode, the pump signal is a CW one whose frequency α p  is changed in steps. This is applied to transducer 13 or 14 and the duration of each step equals the time T for a surface wave to propagate the length of array 12. The non-linear interaction signal is picked up by array 12 and represents the intensity of the acoustic energy incident from a first direction throughout the first step, a second direction throughout the second step, and so on. In the third mode the CW frequency α p  applied to transducer 13 or 14 is varied step-wise or in a continuous linear sweep, at a rate such that several values of α p  occur in the time T. This has the  effect that the array 12 output signal represents the intensity at a given focal distance from the array, the focal point scanning in the x dimension. The focus is real or virtual, depending on whether the frequency α p  is increased or decreased with time. A semi-conductor layer, (21) Fig. 2 (not shown), spaced from array 12 by a dielectric (e.g. air) film, may be used to enhance the device output signal through non-linear electrical effects. Substrate 11 may be both Piezo-electric and a semi-conductor.
Patent GB-1110810-A (GB)
Title: Apparatus for reproducing recorded information by beam scanning
Inventor: PEARS DAVID ASHLEY
IPC: H04N5/76
Filed: 1965-11-22
Abstract: 1,110,810. Recording and playback. MINNE SOTA MINING & MANUFACTURING CO. 22 Nov., 1965, No. 47109/67. Divided out of 1,110,809. Heading G5R. A record member having a track recorded thereon is driven so that an energy beam (e.g. an electron beam) scans the track which is thereby caused to emit energy to provide a playback signal, and a synchronizing signal which controls the speed of the record member also causes adjustment of the direction of the beam so as to move its point of impingement on the record member in the direction of the track. The system described is the same as that shown in Fig. 2 of Specification 1,110,809.
Patent GB-1179750-A (GB)
Title: Preparation of Imidazole Carbamates
Inventor: KOLLONITSCH JANOS
IPC: C07D233/94
Filed: 1967-10-23
Abstract: 1,179,750. Imidazole carbamates. MERCK & CO. Inc. 23 Oct., 1967 [27 Oct., 1966], No. 48101/67. Heading C2C. 1 - Methyl - 5 - nitroimidazole - 2 - ylalkyl or alkylidene carbamates of the formula wherein R is a C 1-3  alkylene or C 2-3  alkylidene group, and R 1  and R 2  are each hydrogen or methyl, are prepared by reacting at elevated temperatures in the presence of a catalytic amount of a di-(C 1-8  alkyl) tin oxide or a di- (C 1-8  alkyl) tin di-(C 1-8  acylate), the corresponding 1 - methyl - 2 - hydroxyalkyl (or alkylidene) - 5 - nitroimidazole with the appropriate carbamic ester of the formula wherein R 3  is C 1-3  alkyl. 1 - Methyl - 2 - hydroxymethyl - 5 - nitroimidazole is made by reacting dimethyl sulphate with 2 - hydroxymethyl - 4(5) - nitroimidazole resulting, together with imidazole-2-carboxaldehyde, from the nitration of the acetate salt of 2-acetoxymethylimidazole, which is obtained by treating 2-hydroxymethylimidazole with acetic anhydride. 1 - Methyl - 2 - (11 - hydroxyethyl) - 5 - nitroimidazole is prepared by reacting 1-methyl-2- formyl-5-nitroimidazole with methyl magnesium iodide.
Patent GB-951585-A (GB)
Title: Spray-painting plants
IPC: B05B14/46
Filed: 1962-12-20
Abstract: 951,585. Coating-apparatus. SVENSKA FLAKTFABRIKEN A.B. Dec. 20, 1962 [Dec. 22, 1961], No. 48216/62. Heading B2B. [Also in Division F4] A plant for spray painting objects intermittently or continuously conveyed through the plant includes a drip separator in which cleaning liquid after mixing with ventilating air is separated together with accompanying paint particles by flow along thebottom of the separator which extends for the purpose at an inclination the whole length of the plant whence the liquid passes to a paint separation tank which extends in the opposite direction towards the other end of the plant for recirculation of the cleaned liquid, an endless conveyer dipping into the tank for removal of the paint particles. As shown, a closed channel I is supplied with ventilating air through apertures 4 and 5. The channel has a V-shaped bottom 6 terminating in an opening 7 for discharging ventilating air to a drip separator 8 from which the air is discharged by suction means. Cleaning liquid is supplied through pipes 10 to channels 11 and from there sweeps over the walls of the V- shaped bottom 6 in the form of a covering liquid film. The liquid is then conveyed along channels 13 towards one end 14 of the plant, where the channels 13 have an outlet 15 to a liquid cleaning tank 16 directly beneath the drip separator. The liquid in the tank flows back toward the other end of the tank where an endless conveyer 19 projects downwards into the tank to take up paint particles carried along by the liquid.