baber/WOPTO huggingface dataset:
Patent GB-639928-A (GB)
Title: Improvements in electrical calculating circuits
IPC: G06G7/16
Filed: 1946-08-21
Abstract: 639,928. Valve multiplying circuits. SCOLES, G. J., MILLER, C. W., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Aug. 21, 1946, No. 24917. [Class 40 (vi)] In a circuit for multiplying together two electrical quantities x and y, the first quantity x is applied in push-pull between a grid of a main valve V1 and a grid of a compensating valve V2 and the second quantity y is applied in push-pull between another grid of the main valve and either a grid of a further compensating valve V3 or another grid of the first compensating valve (Fig. 2, not shown). The anode circuits of the valves are connected in parallel. Thus the output current from the main valve is k1(a+x)(b+y)=k1(ab+ay+bx+by), (where a and b account for the initial bias on the grids), and the output currents from the compensating valves are k2(a-x) and k3(b - y). If k2=k1b and k3=k1a, then the combined output current is k1xy together with some constant terms, the other terms containing x and y having been eliminated, In the arrangement using only one compensating valve the output current from the compensating valve is k1(a - x)(b - y)= k1(ab - ay - bx+xy) and the combined output current 2k1xy+2k1ab.
Patent GB-1154372-A (GB)
Title: Improvements relating to Aircraft Automatic Pilots
Inventor: CALWELL ARTHUR JOHN
IPC: G05D1/00
Filed: 1965-06-12
Abstract: 1,154,372. Automatic control of aircraft. ELLIOTT BROS. (LONDON) Ltd. June 9, 1966 [June 12, 1965], No. 24924/65. Heading G3R. In an aircraft speed control system, two separate controllers responsive to airspeed error are provided one of which automatically takes over throttle control from the other upon detection of a fault in the latter. In Fig. 1, electrical signals constituting an airspeed reference for an aircraft, e.g. during an automatically flared landing, are produced by each of four signal generators 12, 13, 12<SP>1</SP>, 13<SP>1</SP> adjusted by a common knob 11. The airspeed reference signal from generator 12 is compared in a unit 16 with a signal corresponding to indicated airspeed produced by a meter 18. Any difference is effective, through an amplifier 33, to run a servomotor 34, having integrated velocity feedback, in the appropriate direction to correct the airspeed by simultaneous adjustment of engine throttles 39 through clutches 38. A signal compensating for changes in aircraft pitch attitude is added from a gyro-vertical 30. In the event of faults, detailed hereinafter, of sufficient magnitude to cause, through units 24, 28, the operation of an indication and relay unit 29, an electromagnetically operated clutch 36 is disengaged and another 36<SP>1</SP> engaged so that a similar throttle control system including generator 12<SP>1</SP>, an airspeed meter 18<SP>1</SP> and a servomotor 34<SP>1</SP> is substituted for the faulty one. The faults which produce such changeover are (a) excessive airspeed error detected by a comparator 22 associated with a duplicate airspeed meter 18a and reference generator 13 (b) excessive error detected by a comparator 26 between airspeed meter 18 and its duplicate 18a (c) excessive signal from gyro-vertical 30 detected by a unit 31 or (d) incorrect operation of servomotor 34 indicated by a comparison in a unit 32 between the output of tachometer generator 35 and the output of an amplifier-RC network, simulating the servomotor, to which signals from airspeed comparator 16 and gyro-vertical 30 are applied. In a similar manner, if the second control system is in control initially, a fault causes changeover to the first. A detailed relay circuit is described for initially selecting either throttle control system, indicating faults and/or arranging for automatic changeover e.g. prior to landing. The latter operation may be delayed sufficiently to ensure sufficient speed correction to prevent false operation. The throttles are closed automatically when the aircraft descends to a low altitude above the runway.
Patent GB-657068-A (GB)
Title: Improvements in or relating to trousers supports
IPC: A41F3/00
Filed: 1948-09-23
Abstract: 657,068. Shirts; braces for personal wear. WHITE, J. A. Sept. 23, 1948, No. 24929. [Class 141] A brace link comprises a cord a with looped ends at or adjacent which are provided hooks d adapted to engage the edges of apertures i in a shirt or other garment through which the loops b pass to engage the trouser buttons. The hooks d may be formed integrally with the metal sockets c which retain the ends of the cord. The shirt may be provided on the inside with a strap e depending from each shoulder at the front, the lower end being turned back and stitched to form a number of slots k through one of which the link can be threaded. A similar arrangement is provided at the back. Specification 657,059 is referred to.
Patent GB-1113221-A (GB)
Title: Improvements in or relating to formant-tracking equipment
Inventor: HOLMES JOHN NICHOLAS
IPC: G10L25/48
Filed: 1964-06-17
Abstract: 1,113,221. Vocoders. MINISTER OF TECHNOLOGY. 15 July, 1965 [17 June, 1964], No. 25045/64. Heading H4R. In a formant locating equipment speech is applied to a set of contiguous band-pass filters, arranged to divide up that portion of the speech spectrum in which the formant is expected to occur into a number of parts, the outputs of the filters are fed via a similar number of gate circuits to a maximum selector circuit which determines which gate circuit is feeding through the maximum signal, and operates to enable that gate circuit and at least one adjacent gate circuit. In order that the circuit will operate correctly after a silence interval the maximum selector inputs may be switched by the absence of speech straight to the outputs of the band, pass filters cutting out the gate circuits which # re connected back in circuit shortly after speech recommences, Fig. 2 (not shown). In addition, to guard against capture by, e.g., a high first formant when trying to locate the second formant, the inputs to the maximum selector may be weighted to favour the middle parts of the, e.g., middle formant region, the weighting preferably being a non-linear function of the signal amplitude, also some band-pass filter outputs which are in spectrum regions which may be occupied by two adjacent formants may be gated out of one formant locating loop when the bands are occupied, or adjacent those occupied, by the other formant. Fig. 5 shows an arrangement for locating two formants one of which may occupy a position anywhere in the frequency spectrum covered by the band-pass filters, not shown, whose outputs are fed on lines a to j, while the other may occupy a position in the spectrum covered by the filters whose outputs are fed on lines e to n. Each set of inputs is applied via a set of gates 1 or 11 to a maximum selector 10 or 13 which gives one output on a line, e.g. 10e, corresponding to the line, e.g. e, on which the signal level is maximum. The outputs of the maximum selectors 10 or 13 are fed via a diode matrix 3 or 12 to open the gates corresponding to that line carrying the maximum signal and the lines on either side of it. In addition the outputs of maximum selector 10 are connected via a matrix 15 to a set of gates 14, and the arrangement is such that an output on one of leads 10d to 10i of the maximum selector 10 causes one or more of the respective gates 14e to 14k to be inhibited to prevent a high first formant causing incorrect operation of the second formant locating loop. The gate circuits may be as described in Specification 1,058,277 and the maximum selector circuit as described in Specification 1,067,366. Reference has been directed by the Comptroller to Specification 986,520.
Patent GB-469160-A (GB)
Title: Improved means for silencing and extinguishing the flame of the exhaust gases of internal combustion engines
IPC: F01N13/20
Filed: 1936-09-14
Abstract: 469,160. Cooling and silencing exhaust. SOC. ANON. DES APPAREILS G. A. L. Sept. 14, 1936, Nos. 25062 and 25063. Convention dates, Dec. 24, 1935 and April 29, 1936. [Class 7 (ii)] In a device for silencing and extinguishing the flame of exhaust gases in which the gases are expanded in a chamber 3 and cooled in hollow fins 5 by external air, a perforated plate 12, the orifices of which may be dished, causes uniform dispersion of the gas. The fins are each made from a pair of undulating sheets of metal, e.g. copper, welded or riveted together and their ends are bent over as shown at 35 to obscure the flame in the chamber 3. They extend in planes perpendicular to the plane of the paper and are gradually reduced in length to produce an ejector effect on the gas by the air flowing past the device. Additional cooling-fins 36 cool the chamber 3. A separate device may be provided for each cylinder. Alternatively, separate pipes cooled by fins may be led to a common chamber 3 and the hollow fins may lead to a common exhaust manifold also cooled by fins. A passage 37 for collecting heated air for external use may be placed at the rear of the chamber 3, the heated air being conveyed away by a pipe 38.
Patent GB-638744-A (GB)
Title: Improvements in or relating to handles for carrying bags or containers
IPC: B65D33/10
Filed: 1946-08-23
Abstract: 638,744. Handles. STRANDBERG, M. O. Aug. 23, 1946, No. 25238. Convention date, Aug. 24, 1945. [Class 133] Handles for bags or other containers 'are manufactured by folding one length, or several lengths arranged one upon the other, of paper, fabric or like flexible material a number of times longitudinally to form a multi-layered strip, the folded parts thus obtained being folded against each other, and thereafter slitting opposite end portions to form flaps which are attached to respective sides of a bag or container. As shown a paper strip 4 is coated with paste and folded along the lines b, b with the outer edges facing to the middle line a, a. The double parts obtained are coated with paste and folded along the lines c, c with the outer edges against the middle line a, a and the parts thus obtained are then coated with paste and finally folded against each other along the middle line. A length is cut off and the ends slit at 5 to form two flaps 6 which may be glued to each side of the bag after folding to form two vertical parts 3 and a horizontal part 6<SP>1</SP>, and which may have a strengthening strip 7 of paper glued over them or one part of each may be glued to a strengthening strip which is glued to one side of the bag, the other side of the flaps being glued to the other side of the bag. A cross-piece 8 of wood may be arranged in the horizontal part 6<SP>1</SP>.
Patent GB-996745-A (GB)
Title: Self-copolymerizable resinous compositions
IPC: C08G63/676
Filed: 1963-06-25
Abstract: A self-copolymerizable resinous composition comprises a mixture of a linear monoester or polyester obtained by condensing (a) at least one a ,b -unsaturated dibasic acid and (b) at least one 6-hydroxy-3a,4,5,6,7,7a-hexahydro-4,7-methanoindene of formula <FORM:0996745/C3/1> with one or more peroxides, the molar ratio of components (a) and (b) being in the range 1 : 10 to 10 : 1.  In the Examples: (1) the methanoindene is reacted with maleic anhydride and propylene glycol and the polyester formed is cured with benzoyl peroxide or di-t-butyl peroxide; in the latter case the resin may then be further cured with methyl ethyl ketone peroxide; (2) a monoester formed from the methanoindene and maleic anhydride is cured in two stages, first using di-tert-butyl peroxide and then methyl ethyl ketone peroxide in the presence of cobalt naphthenate, (3) and (4) polyesters are formed from the methanoindene and maleic anhydride and either (a) propylene glycol and 3,6-endomethylene tetrahydrophthalic acid or (b) coconut oil fatty acids, adipic acid and diethylene glycol.
Patent GB-286173-A (GB)
Title: Paper perforating devices
IPC: B26F1/36
Filed: 1927-09-24
Abstract: 286,173. Kilne, F. J. Sept. 24, 1927. Reciprocating-punch machines.-A paper punching machine has a base 1 with a punch bearing bracket 4 in which slides a punch 3 coacting with a die plate 5. An operating lever 6 carries a fulcrum pin 90 slidable in slot 12 in the bracket, and has the punch jointed to it by a pin 13. The head of the punch is rounded and bears on the underside of the lever 6. A graduated split gauge-bar 20 bears resiliently in a slot in the base. Ribs for locating the centre of the sheet may be provided.
Patent GB-749203-A (GB)
Title: Improvements in and relating to vehicles
Inventor: SMITH WALTER ARTHUR
IPC: B60P1/38
Filed: 1953-09-14
Abstract: 749,203. Vehicles equipped with conveyers for unloading material. CHARROLD, Ltd. Sept. 14, 1954 [Sept. 14, 1953], No. 25295/53. Class 78 (4). A scraper conveyer 23, Fig. 3, running over the base 3 of the hopper body of a vehicle to deliver material to a discharge opening is housed within a chamber 11, 12 within the body and receives the material through its sides 11. As illustrated the material is fed to the conveyer through doors 13 biased to the open position shown at the right-hand side of Fig. 3 by springs 36 acting through linkages 34, 33, 32 and closed independently by hand levers (not shown) grouped at a common operating point on the vehicle and acting through cables 37 passing over pulleys 30 within the chamber 11, 12. The doors 13 may open as described in Specification 667,057. The upper portion 12 of the chamber 11, 12 may be removed for servicing. The conveyer 23 comprises pusher bars joining endless chains 22, the upper run of which is carried by brackets 25 on the chamber while the lower run is protected from material by plates 26. The chains are driven from a motor 24, Fig. 1, on the vehicle and deliver the material to an aperture 5 which may be closed by a hinged or sliding flap 6. The body 1 may be divided into compartments for receiving different materials and may be provided with articulated lids 40. An upwardly folding catwalk 43 may be provided on the body.
Patent GB-765210-A (GB)
Title: Improved method of and means for filling high explosive shell and the like
Inventor: STEELE ARTHUR ROBERT VICTOR
IPC: F42B33/02
Filed: 1945-09-29
Abstract: A hollow former for the pour-filling of shells &c. (see Group XXI) is made from a fabric or paper-laminated phenol formaldehyde resin.
Patent GB-1117933-A (GB)
Title: Polyol compositions and polyurethanes produced therefrom
IPC: C08F8/42
Filed: 1965-06-16
Abstract: A polyol/polymer complex composition having reactive hydrogen atoms as determined by the Zerewitinoff test contains from 0.5 to 50% by weight of a preformed polymer, a minor proportion of which has been reacted with the polyol by generation of free radicals within the mixture of the polyol and preformed polymer or in a component of such a mixture before mixing thereof.  The preformed polymer is natural or synthetic and the polyols specified include polyether and polyester polyols.  The free radicals may be generated by a peroxy or azo catalyst, radiation, ultrasonics or shearing forces.  Polyurethanes are produced from the polyol/polymer complex by reacting it with an organic polyisocyanate or polyisothiocyanate. In Example 1, polyacrylonitrile is reacted with a polyol (Polyol A) made by addition of 1,2-propylene oxide to glycerol or with a tris(polypropylene-glycol)phosphite, a triol produced by addition of 1,2-propylene oxide to an ethylene oxide-glycerol adduct, a polyester polyol produced from methyl epsilon-caprolactone, epsilon-caprolactone and trimethylol ethane, or the adduct of 1,2-propylene oxide with diethylene triamine or a phenol/aniline/formaldehyde condensate. In other examples, Polyol A is reacted with (2) to (4) polyvinyl chloride, (5a) vinyl chloride - vinyl acetate - vinyl alcohol terpolymer, (6) a butadiene-styrene rubber, (7) a vinyl chloride - acrylonitrile copolymer, (8) gum arabic, (9) natural rubber, (10) hydroxyethyl cellulose, (11) a vinyl chloride - vinyl acetate copolymer, (12) polyvinyl formal, (13) a polycarbonate resin based on 2,2-bishydroxyphenyl propane, (14) polyvinyl acetate, (16) a polychloroether having repeating units of formula <FORM:1117933/C3/1> (17) polystyrene, (18) a phenol-formaldehyde resin of structure <FORM:1117933/C3/2> (19) polypropylene, (20) a polyhydroxyether resin having units of formula <FORM:1117933/C3/3> or (21) carbon black loaded reclaimed natural rubber, and (15) a polyester triol made from methyl epsilon-caprolactone, epsilon-caprolactone and trimethylol methane is reacted with an acrylonitrile - vinyl chloride - vinylidene chloride terpolymer. Cast polyurethane elastomers are produced from the complexes of Examples 1 to 21 by reaction with tolylene diisocyanates and polyurethane foams are similarly produced from the complexes of Examples 1, 6, 17 and 20.
Patent GB-1176293-A (GB)
Title: Acoustic Well Logging Tool
IPC: G01V1/52
Filed: 1968-05-28
Abstract: 1,176,293. Acoustic well-logging. MOBIL OIL CORP. 28 May, 1968 [29 May, 1967], No. 25523/68. Heading H4D. An acoustic well-logging tool 10 (Fig. 1) comprises a transceiver support 30 (Fig. 3) having a chamber 52 formed therein, a plate 54 bridging the chamber, and a transceiver 32 mounted on the plate, there being several staggered chambers 56 formed in the plate to provide intorted paths which attenuate acoustic energy travelling between transceiver 32 and support 30 so that the transceiver and support are effectively isolated from each other acoustically. Transceiver mounting.-The chambers 56 may extend partially or wholly through the plate 54 and may be filled with acoustically attenuating material, e.g. neoprene. In preferred embodiments epoxy resin bonds a lead zirconate titanate transceiver disc to metal plate 54, an aperture 60 behind the transceiver is filled with epoxy resin or natural rubber or neoprene, and chamber 52 is filled with an acoustically attenuating material (e.g. P.T.F.E. or compressed neoprene or natural rubber). Support 30 is mounted for rotation about shaft 26 in an oilfilled compartment defined by a rubber acoustic " window " 28. Well-logging.-For detecting anomalies in the wall of the well by a pulse-echo method, 1-2 MHz pulses are emitted at. a repetition rate of 2000 per second while support 30 is rotated at 100-400 r.p.m. and the logging tool is moved along the well. Angular position signals transmitted uphole control the horizontal sweep of oscilloscope 18: depth signals from measuring sheave 37 control the vertical sweep: echo signals intensity modulate the oscilloscope beam. For investigating earth formations surrounding the well the transmitted frequency is lowered to 50-100 kHz, the pulse repetition rate is 50 per second and the transceiver rotation rate is 1 r.p.m.
Patent GB-502459-A (GB)
Title: Improvements in or relating to the production of hydrogen peroxide from solutions
IPC: C01B15/013
Filed: 1938-08-31
Abstract: 502,459. Distilling hydrogen peroxide. SCHMIDT, H. Aug. 31, 1938, No. 25526. [Class 32] Solutions which liberate hydrogen peroxide on heating are distilled by atomizing them, preferably into an evacuated heated distilling chamber, with a superheated liquid heat carrier; which remains wholly or largely liquid during distillation. The heat carrier is preferably under excess pressure, produced by means of a stabilizing gas such as oxygen. Suitable heat carriers are inactive liquids such as the distillation residue of the process, which may be used cyclically, preferably with the addition of a stabilizer such as phosphoric acid, benzoic acid, lauric acid, or urea. Additional heat may be supplied to the. atomized solution by means of heating surfaces, or by injecting heated gas or vapour, e.g. superheated steam, into the chamber.
Patent GB-259761-A (GB)
Title: Method of applying non-corrosive coatings to metals
IPC: C25D5/50
Filed: 1925-10-13
Abstract: 259,761. HõrdÚn, J., and Tillquist, H. T. Oct. 13, 1925. Cased or compound forms.-A metal is provided with a non-corrosive surface by first depositing electrolytically a layer of chromium and then heating in a non-oxidizing atmosphere to a temperature which need not exceed 1200‹ C., such that any layer of saline solution, moisture, or gas occurring between the metal and the coating is expelled; the metal after cooling to a suitable temperature such as 500‹ C., preferably with air excluded, is then subjected to a rolling, pressing, or other mechanical treatment to promote surface alloying of the metal and the coating. 259,837. Gauld, D. M. April 6, 1926. Railway vehicle details.-A buffer plunger tube is pressed from a flat metal plate in one completepiece and comprises a plain tubular body a of uniform diameter, a flanged open end c, and a closed end b, the closed end afterwards being removed. The flanged end of the tube may be enlarged to take a buffer spindle socket, or the closed end may have the flanges 17b, Fig. 17, left on to engage with a retaining socket 17e. A buffer case, socket, or guide is constructed in a similar manner, the flange being shaped and bent back on to the end of the tube to form a base as at c, Fig. 13. Flutes may be formed in the sides of the tube which may act as guides for the buffer plunger and a neck bush 13n formed from a flat plate may be pressed on the tube so that it seats on the shoulder 13d ; it may also be provided with a projection 13p which acts as a stop for the shunter's pole.
Patent GB-703670-A (GB)
Title: Improvements in or relating to blowpipes or cutting torches for flame cutting or removal of metal
IPC: F23D14/46
Filed: 1951-11-01
Abstract: 703,670. Blowpipe burners. BUCKLE, L. G., and BOOCOCK, R. Oct. 29, 1952 [Nov. 1, 1951], No. 25584/51. Addition to 625,074. Class 75 (1) The cutting torch described in the parent Specification is modified in that the valve or control block is formed as a unit separate from the head of the torch and is joined to the latter by flexible tubing for supplying fuel gas and oxygen to the said head.
Patent GB-823677-A (GB)
Title: Improvements in the purification of hydrochloric acid
IPC: C01B7/00
Filed: 1957-08-13
Abstract: Hydrochloric acid is separated from fluorine compounds by contacting the acid with a depressant agent in solution in an aqueous hydrochloric acid liquor and volatizing HCl from the liquor, the depressant agent consisting of aluminium chloride or an aluminium-chloride, fluoride complex in an amount sufficient to retain a substantial amount of fluorine associated with aluminium in the residue.  The complex which is produced after aluminium chloride is used as the depressant has the probable formula AlF3.5AlCl3.38H2O. Distillation is effected at not less than 180 DEG F. and preferably at 190-225 DEG F.  In a typical example, 500 mils. of 31.5% HCl containing 0.147% of fluorine were added continuously by means of a dropping funnel to a solution of 10 grams of AlCl3.6H2O in 500 mils. of 20% fluorine free hydrochloric acid and the whole heated to maintain a pot liquor temperature of about 230 DEG F.  Distillation was controlled to produce anhydrous HCl which was dissolved to produce a 20 DEG  Be hydrochloric acid solution containing 51 parts per million of fluorine.