baber/WOPTO huggingface dataset:
Patent GB-862673-A (GB)
Title: Improvements in or relating to pipe couplings
Inventor: WHITE WILLIAM PAUL
IPC: F16L37/10
Filed: 1958-06-10
Abstract: 862,673. Pipe joints. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. June 26, 1959 [June 10, 1958], No. 18448/58. Class 99(1). In a remotely operated coupling for pipes carrying gases or liquid metals at elevated temperatures, a pipe 4 is held against rotation and limited in axial movement in a releasable pipe holder whilst a pipe 14 is located in the holder in axial alignment with the pipe 4 so as to be restrained against rotation but free to move axially, the pipe 14 being moved by means located on the holder relative to the pipe 4 to make and break a union between the pipes. As shown, the pipe holder consists of a chuck 1 having jaws 2 for holding the pipe 4 whose axial movement therein is limited by shoulders 5, 6. The pipe 14, having a conical head 17 and shoulders 18, 19, is keyed to a bearing housing 7 fixed to the chuck 1, the bearing 8 supporting a bevel gear 9 rotatable by a gear wheel 21 actuated through a tube 22 coaxial with a square-ended rod 20 which serves to operate the chuck 1. The pipe 14 is moved axially by screw-threads thereon engaging with an internally screw-threaded boss 13 of a cover plate 12 actuated by the bevel gear 9.
Patent GB-1497210-A (GB)
Title: Matrix memory
IPC: G11C29/00
Filed: 1976-05-05
Abstract: 1497210 Variable threshold FET memory; read out NCR CORP 5 May 1976 [13 May 1975] 18427/76 Heading G4C [Also in Division H3T] Binary data is read from a matrix array of variable threshold storage FETS by comparing the signal from a selected storage FET with that from a variable threshold reference FET set to a predetermined one of the two binary threshold values.  As shown a matrix array of MNOS storage FETS 20 has one MNOS reference FET 42, 44 per row, although it is stated that a single reference FET for the whole 'matrix could be used. The whole circuit may be formed as an integrated circuit. The comparison used on read out compensates for variations in transistor parameters. A storage FET, say 20a, is selected by decoder 32 energizing a row drive transistor 34a to connect an enabling voltage to the appropriate row, and by decoder 22 energizing a column select transistor, 28a, to connect a constant current source 52, Fig. 2 (not shown), to the appropriate column. Constant current source 52 drives a constant current through the column select transistor, the storage transistor 20a, and a conductive power supply transistor 30a. Depending on its threshold value the storage transistor 20a present a high or low impedance so that the voltage at the output of the column select transistor and the output of the constant current source, which acts independently of voltage, reflects the threshold value and hence the stored datum. Simultaneously with the selection of a storage FET the corresponding reference FET 42 is selected and is driven by an identical constant current source 54. The two voltage signals are connected to the two inputs of a bistable 50, except that the reference voltage is offset by circuit 56 so as to lie between the two voltages corresponding to the two threshold values obtained from a storage FET. The polarity of the voltage across the bistable 50 thus indicates the stored datum and sets the bistable accordingly. The constant current source Fig. 2 (not shown), includes two FETS, one of high and the other of low impedance, connected in series between power supply lines to provide a bias voltage to saturate a further FET which is connected to one of the power lines to provide a constant current independent of output voltage.
Patent GB-700721-A (GB)
Title: Organic acid esters of cellulose
IPC: C08B3/22
Filed: 1951-08-03
Abstract: A secondary cellulose ester of an organic acid is obtained by esterifying cellulose by means of the appropriate acid anhydride in the presence of at least 7 per cent. of sulphuric acid (on the weight of the cellulose) as catalyst, and of a solvent for the cellulose ester in amount at least sufficient to form a homogeneous solution of the primary ester, neutralizing 75-85 per cent. of the sulphuric acid employed in the esterification, and maintaining the solution at above room temperature until substantially all the combined sulphuric acid, but substantially none of the combined organic acid, in the primary ester has been split off.  The sulphuric acid may be neutralized by means of a weak acid salt or other neutralizing compound of an alkali metal or alkaline-earth metal, or of magnesium, zinc, or aluminium. Magnesium acetate and carbonate, acetates of zinc, aluminium, calcium, strontium and barium, and oxides and hydroxides of strontium and barium are specified.  The neutralizing agent may be added with sufficient water to hydrolyse the acid anhydride or with an excess of this amount up to 4 per cent. on the weight of the cellulose, including any water liberated during the neutralization.  If desired, the esterification solution may be diluted with an inert diluent, e.g. acetone, or with up to 4 per cent. of water (on the weight of the cellulose) before the partial neutralization of the catalyst. The solution may be kept at 35-40 DEG C. for 30-75 minutes after the partial neutralization of the catalyst.  At the end of the required period, the remaining free sulphuric acid may be neutralized and the cellulose ester may be precipitated by means of water or other non-solvent.  The cellulose esters obtained may have 2.6-2.85 acyl groups per glucose unit of the cellulose.  Cellulose acetates, propionates, butyrates, aceto-propionates, and aceto-butyrates may be produced.
Patent GB-644957-A (GB)
Title: Improvements in method of manufacturing compressors of the so-called roots blower type
IPC: F01C1/12
Filed: 1948-07-09
Abstract: 644,957. Rotary compressors. AKTIEBOLAGET BOLINDER-MUNKTELL. July 9, 1948, No. 18558. Convention date, July 10, 1947. [Class 110(ii)] Sealing means for the rotors 12 of a Root's blower comprises narrow edges 12a, 12b, which are left proud of the rotor surfaces, and ground down by slowly running the rotors at higher temperatures than normally met under working conditions. Oil and carborundum may be used as grinding agents and electric driving means may drive the rotors. To prevent grinding paste getting into the shaft bearings or lubricating oil or air creeping into the blower, compressed air is blown into channels 22, 23, the shafts carrying sealing ledges 24. Recesses 15, 16 in the end covers 2, 3 contain air at atmospheric pressure.
Patent GB-116225-A (GB)
Title: Improvements in Cycle Hubs.
IPC: B60B27/02
Filed: 1917-12-14
Abstract: 116,225. Brampton Bros., and Easthope, J. Dec. 14, 1917. Hubs.-A cycle hub is formed from a length of tubing 1 having shoulders 2, 2a pressed &c. to fcrm abutments for the spokeflanges 3, 3<a>, the metal being of uniform thickness, and the cylindrical parts of uniform diameter throughout. In the construction shown, the flange 3<a> has a threaded boss to take the sprocket 9. Ball races 6 and caps 7, 8 are pressed on the hub ends.
Patent GB-839164-A (GB)
Title: Substituted dibenzo-cycloheptadienes and the preparation thereof
Filed: 1958-06-10
Abstract: The invention comprises 12,13,14-trimethoxy-3a  - acetamido - 4,5 - 6,7 - dibenzo - cycloheptadiene-10-carboxylic acid:  <FORM:0839164/IV (b)/1> and esters thereof, especially esters with alcohols containing 8 carbon atoms or less; and the preparation thereof by heating the sulphone of isothiocolchicine with an alkali metal alcoholate in alcohol and, if desired, esterification of the product with diazomethane or a homologue thereof.
Patent GB-560582-A (GB)
Title: Improvements in or relating to chucks for electrical coil winding machines
IPC: H01F41/06
Filed: 1942-12-31
Abstract: 560,582. Magnetic chucks. MILLER, J. W., and GOODMANS INDUSTRIES, Ltd. Dec. 31, 1942, No. 18580. [Class 60] [Also in Group IX] A chuck for an electrical coil winding machine comprises a fixed cheek or plate 5, shaped to conform to a diaphragm 6 having a conical portion 15, a former 20, adapted to receive a cylindrical portion 13 of the diaphragm on which one or more layers of coil are to be wound, the former 20 being located between the plate 5 and a removable cheek 29 and held in position by a nut 33, and a guide member 21 which positions the electrical coils on the portion 13 with respect to the conical portion 15. The guide 21 is divided diametrically into two parts and is drawn into position on the diaphragm by a tubular permanent magnet 4 positioned between plates 1, 2 of soft iron and aluminium respectively. Soft iron pins 11 in the plate 2 extend through holes in the plate 5, air gaps extending about the pins. Specification 559,531, [Group IX], is referred to.
Patent GB-471080-A (GB)
Title: Improvements in and relating to rotary valves for internal combustion engines
IPC: F01L7/02
Filed: 1936-07-06
Abstract: 471,080. Valves. SPROWL, A. R. July 6, 1936, No. 18696. [Class 7 (vi)] A rotary valve controlling inlets at 11 each common'to two cylinders, and exhaust at 12, is provided at the inlets and also at the cylinder ports with packing-members 27 extending substantially halfway round the valve. The packing-members are held in place by screwed rings 25 which carry springs 35 pressing the packing-members against the valve, and the extensions 31 of adjacent packing-members overlap circumferentially. Packing-rings may be fitted at 36, and if desired also around the outside diameter of the packing-members. The valve is formed with inlet and exhaust passages 39 and 40 respectively, for each cylinder. These passages 39, 40 may be tapered from one side of the valve to the other, and are preferably of rectangular crosssection with the longer sides parallel to the valve axis. The valve is made in sections connected by a coupling 16, around which is arranged a bearing 20 of slightly greater diameter than the valve, so as to provide a slight clearance between the valve and its housing. Lubricating-oil supplied at 41 flows through passages formed in the packing- members 27.
Patent GB-482879-A (GB)
Title: Improvements in or relating to electric systems for controlling the position of a controlled object
IPC: F15B9/09
Filed: 1936-07-06
Abstract: 482,879. Electric control systems. SPERRY GYROSCOPE CO., Inc. July 6, 1936, No. 18736. Convention date, July 5, 1935. [Class 40 (i)] In a system in which a rudder follows movements of a compass, two photocells controlled by movements of rudder and compass respectively maintain a circuit in balance, the rudder being moved to restore balance whenever the balance of the circuit is upset. Light from a source 5 passes through a slot 3 in a compass card 2 and illuminates photocell 17, the card being normally adjusted so that half the light from the lamp reaches the cell. Similarly, a shutter 42 associated with the rudder 45 is arranged to allow more or less light from lamp 5<1> to reach photo-cell 17<1>. The outputs from both cells are amplified and fed to transformer 58 so that movement of the ship from a set course causes one or other of valves 59, 60 to pass current and coil 50 or 51 is energized to move rod 54. The fluid motor 56 is operated and the rudder 45 is turned. Shutter 42 moves with the rudder 45 to adjust the illumination of cell 171 and rebalance the flow through transformer 58. The rod 54 is restored to normal by springs 65. In another embodiment the fluid motor is replaced by an electric motor. Half-wave rectifiers 80, 80<1> are connected in the supply to lamps 5, 51 so that the lamps pulsate at supply frequency. If the lamps are fed with D.C., alternating current would be supplied to the plates of valves 27, 271.
Patent GB-1080692-A (GB)
Title: Improvements relating to sliding door mechanism
IPC: E05F15/56
Filed: 1963-05-11
Abstract: 1,080,692. Sliding door mechanisms. C. J. WATKINS. May 11, 1964 [May 11, 1963], No. 18754/63. Heading E2M. A door operating mechanism for sliding and sliding-folding type doors consists of an elongated inverted channel shaped housing 2 having inwardly extending tracks, hangers 11 travelling on rollers 14 on the tracks, and a two way ram cylinder 26 with piston rod 28 attached to one of the door hangers 11 and positioned above the tracks to allow passage underneath the ram cylinder of the door hangers, the piston having a movement parallel to the track and of approximately half the housing length. The height of the door may be varied by adjusters, the bottom of the door having guide pins 22 running in a groove 24 in the floor. The mechanism may be operated pneumatically or hydraulically and is arranged such that when the door is at rest both end valves of the cylinder are at exhaust, to allow the door to be operated by hand if necessary. A trigger mechanism 58 is employed which may take the form of photo-electric cell or treadle mat,
Patent GB-1314644-A (GB)
Title: Process and coating agent for the production of coatings
IPC: C08L15/00
Filed: 1971-06-03
Abstract: 1314644 Electro-deposition coating compositions GLASURIT-WERKE M WINKELMANN GmbH 3 June 1971 [4 June 1970] 18847/71 Heading C7B [Also in Division C3] Coating agents suitable for the production of an electrically deposited coating, which will dry at room temperature, on a metal or other electrically conducting object, connected as anode, comprise an aqueous dispersion of cyclo-rubber and a binder mixture consisting of (I) 10-50 per cent by weight of at least one phenolic resin and (II) 50-90 per cent by weight of a copolymerisate, which is at least partially in the form of a salt with an inorganic alkali (e.g. ammonia) and/or a water-soluble volatile amine, of (A) 50-85 per cent by weight (based on the copolymerisate) of at least one ester of acrylic or methacrylic acid and α C 1 -C 10  alcohol, (B) 5-20% of at least one definically unsaturated fatty acid - containing oil, (C) 5-15% of at least one C 3 -C 5  α, #- definically unsaturated carboxylic acid, (D) 3-20% of acrylamide or metharylamide and/or the methylol derivative thereof and/or an ether with a C 1 -C 8  alcohol of the methylol derivative, and optionally (E) up to 20% of a further copolymerisable compound. If desired the cyclo-rubber may be dispersed in an organic solvent, e.g. isodenyl alcohol and petrol. The conductive object may be pretreated or untreated sheet iron or sheet steel, sheet aluminium, or metal-coated materials such as timber, rubber or plastics. The phenolic resin I is the condensation product of a phenol and formaldehyde, suitable phenols including phenol, cresol, xylenol and 2, 2-bis (p-hydroxyphenyl)- propane. Component (B) of the copolymerisate II may be soya bean, linseed, isomerized linseed, tall, castor or dehydrated castor oil. The acid monomer (C) may be acrylic, methacrylic, itaconic, citraconic, mesaconic or maleic acid, maleic ahydride, or a semi-ester of the specified dicarboxylic acids. Optional monomers (E) include vinyl esters, styrene and derivatives, acrylnitrile, methacrylonitrile, butadiene and styrene. The coating agents may optionally include additives such as pigments, e.g. titanium dioxide, additional phenolic resins, maleinised alkyl resins, maleinised oils, additional acrylate or methacrylate polymers, anti-froth agents, flow improvers, stabilizers and anti oxidants. Electro-deposition is suitably conducted in steel tanks, connected as cathode, and the bath temperature is generally between 20‹-50‹C. The coatings obtained harden in air at room temperature but the process can be accelerated by heating at up to 85‹C.
Patent GB-1108912-A (GB)
Title: Improvements in or relating to electric switchgear arrangements
Inventor: POLLARD ARCHIBALD HAYWARD
IPC: H01H33/666
Filed: 1964-05-06
Abstract: 1,108,912. Switchgear structures; vacuum switches. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 4 June, 1965 [6 May, 1964], No. 18850/64. Heading H1N. A metal-clad switchgear comprises for each phase a busbar chamber 1; a cable connection chamber 21; a circuit-breaker chamber 25 containing a vacuum circuit-breaker 27; and two further chambers 29, 30 having a common wall 31 in which is mounted a pivoted bushing isolator 35. The circuit-breaker 27 consists of a plurality of series-connected vacuum switches 51 operated simultaneously by a double-armed lever 54. The switches are connected together by spring members (81) (Fig. 3, not shown); their envelopes are mounted upon rods (83), (Figs. 4, 6, not shown) and their movable contacts are operable by rods (87) acting on stirrups (91) attached to the movable contacts. Each of the metal chambers is filled with oil or sulphur hexafluoride (SF 6 ). In a polyphase arrangement the chambers of the phases are stacked one above the other with vertical busbars 3, 5, 7. In a modification (Fig. 7, not shown) a single row of switches 51 is operated by a linkage (155). An earthing switch (161) is included in chamber 29 and an isolating and earthing switch (43) in chamber 21.
Patent GB-530613-A (GB)
Title: Improvements in and relating to apparatus for evaporating liquids
IPC: B01D1/16
Filed: 1939-06-28
Abstract: 530,613. Spray evaporators. ZAHN, O. June 28, 1939, No. 18874. Convention date, June 28, 1938. [Class 32] In spray evaporators of the kind in which a solution or emulsion is delivered to a rapidly rotating disc within a closed casing through which is passed a current of warm evaporating agent, preferably hot-air, and wherein currents of secondary air are introduced into the drying chamber above and below the disc, the currents of secondary air are supplied by fans or blowers which are independent of the gun or blower for the main current whereby drying conditions may be regulated according to the material treated. As shown, material is supplied by a pipe F to a rapidly rotating disc Z within a chamber T and a main current of warm air is supplied by a fan I through a heater L, the air and dried material being withdrawn through a conduit 2 by a fan II. Currents of secondary air are supplied through pipes 3, 4 by fans III, IV and may be introduced at a temperature, e.g. considerably higher, than that of the main current. The fans may be electrically driven and controlled in common from a switchboard S, or the fans III and IV may be controlled in common, the fans I, II being regulated independently, A thermostat fitted in the outlet pipe may regulate the supply of material.
Patent GB-692400-A (GB)
IPC: B41C1/04
Filed: 1949-07-21
Abstract: 692,400. Copying by scanning. FAIRCHILD CAMERA & INSTRUMENT CORPORATION. July 21, 1949 [July 24, 1948], No. 18888/51. Divided out of 692,349. Drawings to Specification. Class 40 (iii). The description is identical with that of Specification 692,349, but the claims relate to a machine for producing a screened relief pattern from an original image by employing electrooptical scanning means and a plate-deforming tool with a periodic electrical screen generator connected to modulate the output of the pick-up system and incorporating means for adjusting the output of the generator to adjust the minimum deformation corresponding to the black level of the image sheet and/or means for adjusting the output of the pick-up system to vary the maximum deformation of the plate corresponding to the white level of the image sheet. Subordinate claims refer to the relations between the maximum and minimum penetrations of the plate, a stroboscopic monitoring device and to means responsive to the failure of the screen generator for actuating the tool to an inoperative position.
Patent GB-761706-A (GB)
Title: Improvements in or relating to the production of solid guanidine carbonate
Filed: 1954-06-28
Abstract: Guanidine carbonate is prepared by reacting a soluble guanidine salt with a soluble carbonate in aqueous and/or organic solution, ammonia being added to said solution in order to precipitate the guanidine carbonate.  Specified guanidine salts are the thiocyanate, sulphate and chloride.  Specified carbonates are potassium and ammonium carbonates and ammonium bicarbonate.  The ammonium carbonate may be prepared in situ from ammonia and carbon dioxide in presence of water.  Specified organic solvents are methanol, ethanol, cyclohexanol, methoxyethanol, acetone, butanone, cyclohexanone, methyl acetate and pyridine.  The guanidine thiocyanate starting material may be prepared by thermal treatment of ammonium thiocyanate, and by employing ammonium carbonate or bicarbonate as the soluble carbonate, the evaporated mother lye yields ammonium thiocyanate as a by-product available for conversion into further amounts of guanidine thiocyanate. Gaseous or concentrated aqueous ammonia may be employed as the precipitating agent and may be recovered from the mother liquors by distillation under vacuum, the cooling produced in the recovery stage being employed to lower the temperature during the initial reaction step.  Specification 681,198 is referred to.
Patent GB-708658-A (GB)
Title: Improvements in or relating to the manufacture of vinyl copolymers
IPC: C09D125/14
Filed: 1951-08-13
Abstract: Aromatic vinyl compounds are copolymerised with blown, non-conjugated, drying or semi-drying oils by heating at a temperature between 225 DEG F. and 500 DEG F. in the presence of 0.02 to 1 per cent. by weight of the oil, of a heavy metal drier and 0.5 to 2 per cent. of a metal free peroxide.  The aromatic vinyl compounds include styrene, divinyl benzene, vinyl naphthalene, and halogen-, alkoxy-, hydroxy-, or alkyl-substituted compounds such as, mono-, di-and trichloro or trifluoromethyl styrenes, in particular m- and p-trichloro and trifluoromethyl styrenes, methoxystyrenes, a -methylchloro-, and fluorostyrenes, a -methyl styrene, p-chloro- and p-fluorostyrenes, om- and p-methyl styrenes, m-chlorostyrene, and dichlorodifluoro- and dimethyl-styrene derivatives.  Vinyl acetate and butyrate, allyl acetate, vinyl ethyl and propyl ethers, methyl and ethyl acrylates, ethylene, acetylene, propylene and isobutylene may also be present.  The oils may be linseed, soya bean, safflower, sunflower, chia, perilla, menhaden and sardine oils or the synthetic esters prepared from the drying oil fatty acids with, e.g. glycerol, pentacrythritol, sorbitol and mannitol, and dehydrated castor oil may be present in addition.  The driers comprise one or more heavy metal, e.g. Pb, Zn, Co, Mn, Fe, Cu, and Ni soaps or salts of high molecular weight organic acids, e.g. those of oleic, linoleic, linolenic, fish oil acids, naphthenic acids with formulae, CnH2nO\ 2(n=6-7),CnH2n-2O2 (n=8-12) and CnH2n-4 O2(n=12-13), hydrogenated or disproportionated rosin acids, 2-ethyl hexoic acids, and p  oilsolates (capryl alcohol and monochloracetic acid condensed in the presence of a base).  A calcium soap may also be included as an additional drier.  Metal free peroxides include hydrogen, benzoyl, and di-t-butyl peroxides, ozone and cumene hydroperoxide, and they may be added in aliquot portions, or dropwise during the copolymerization which may be carried out in bulk or in an inert solvent such as benzene, toluene, xylene, mineral spirits, hexane and heptane and which may be partially replaced by dipentene, pinene or d-limonene.  Coating compositions, e.g. varnishes or enamels, formed from the products may include alkyd, phenol-, melamine-, or urea-aldehyde resins, and pigments such as titanium dioxide, zinc oxide and iron blue.
Patent GB-202136-A (GB)
Title: Improved steam jet oil burner
IPC: F23D11/44
Filed: 1922-07-12
Abstract: 202,136. Cooper, R., and Champion, CJuly 12, 1922. Spray burners.-A spray burner comprises an outer tubular casing a, a<1> having a connection a<2> to a steam supply pipe i<3>, a sinuous, corrugated, or indented copper inner tube c connected to an oil supply pipe g<3>, a nozzle d screwing on the tube c and formed with convergent steam orifices d<3> and oil orifices d<1>, and a cap e securing the nozzle to the casing a, a<1>. The orifices d<1> terminate in a recess d<2> in the outer face of the nozzle. A spirally-grooved conical disperser j may be secured in the recess d<2>. The steam and oil enter the burner through filters i<2>, g<2>. A drain cock k for condensation water is provided. The Provisional Specification states that the nozzle and cap are of copper.