baber/WOPTO huggingface dataset:
Patent GB-1330625-A (GB)
Title: Coating composition
IPC: C08G59/18
Filed: 1972-02-01
Abstract: 1330625 Epoxy resin composition INTERNATIONAL BUSINESS MACHINES CORP 1 Feb 1972 [1 March 1971] 4562/72 Heading C3B  A coating composition comprises: (A) 100 parts by wt. of a mixture of 70-95% by wt. epoxy resin (I) having epoxy value (number of epoxide equivalents per 100 g. resin) of 0À50- 0À64 and 3-12% by wt. of highly disperse fillers (II), the total mixture having an epoxy value of 0À46-0À50 and a viscosity at least 20,000 cp. at 25‹ C.; and (B) 30-80 parts by wt. of a precrosslinked mixture of 20-45% by wt. of aromatic amines, 30-70% by wt. of a polyglycidyl ether of bisphenol A having a mean M.W. # 20,000 and 1-5% by wt. of a BF 3 -amine complex dissolved in 5-25% by wt. of a volatile solvent. (A) may include a reactive diluent, e.g. a monoglycidyl ether. I may be a polyglycidyl ether of bisphenol A and/or an epoxy novolac resin. II may be silica, alumina or montmorillonite. The mixture (B) may comprise n - phenylenediamine and/or 4,4<SP>1</SP>- methylenedianiline and a complex of BF 3  with monoethylamine dissolved in 2-methoxyethyl acetate. Uses.-Printed circuits.
Patent GB-787110-A (GB)
Title: Improved process for the production of acrylonitrile
Inventor: KOONS RUSSELL EUGENE
Filed: 1956-02-14
Abstract: <PICT:0787110/IV (b)/1> In the production of acrylonitrile from acetylene and hydrogen cyanide in the presence of an aqueous acid solution of cuprous chloride (preferably containing an alkali metal or ammonium chloride or an amine hydrochloride), the catalyst is passed through the reaction zone in countercurrent to the flow of acetylene.  In the preferred method of operation the catalyst is continuously introduced at 6 at or near the top of the reactor by pump 2 and allowed to pass down over the surface of inert packing material providing a large surface area.  The reactants are mixed with water and introduced at 36 at or near the foot of the reactor. The gases pass out via 23 to a scrubber where the unchanged reactants are recycled via pipe 9.  Acrylonitrile is recovered from the stripper.  Preferred operating conditions are a temperature of 80-95 DEG  C. and a molar ratio of acetylene to hydrogen cyanide of between 5 : 1 and 7 : 1.
Patent GB-1011787-A (GB)
IPC: A01K63/00
Filed: 1963-11-20
Abstract: 1,011,787. Aquaria. E. LAUTENSCHLAGER. Nov. 20, 1963 [Nov. 21, 1962], No. 45771/63. Heading A1A. An aquarium has double walls 10, 11 which house heating and filtering means for the water. From the tank water flows through a setttling chamber 5 for grit and a conduit 3 through a riser 24 having a heating element 26 and a spill-hole 25 into a filter unit 33. Compressed air supplied from a pump 36 through conduit 37 to a tube 34 passes up the tube and through an opening 35 into the tank, thereby drawing water from the filter. In an alternative arrangement water is drawn through a sand covered sieve 7 into a riser 41 by air pumped into a further riser 40 and through an opening 40<SP>1</SP> into the tank. A thermostat 44 controls the heaters and a time switch 46 controls the feeding arrangements. The side walls and bottom may be made of a plastics material.
Patent GB-306038-A (GB)
Title: Improvements in lime or cement mortar
IPC: C04B24/14
Filed: 1929-02-13
Abstract: 306,038. Genairon, A. Feb. 14, 1928, [Convention date]. Concretes and mortars, lime and cement.-A mortar comprises lime or cement, with or without sand, and blood serum as distinct from blood itself. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of similar natural or artificial products instead of the blood serum. This subject-matter does not appear in the Specification as accepted.
Patent GB-586754-A (GB)
Title: Catalytic oxidation of ketones
IPC: C07C45/33
Filed: 1944-03-15
Abstract: Aliphatic and cycloaliphatic monoketones having at least four carbon atoms, and in which the carbonyl carbon is directly linked to a methylene group are oxidized to diketones with oxygen at a temperature of 150-450 DEG  C. in the presence of an oxide of a heavy metal capable of existing in the form of more than one oxide such as copper, vanadium, tungsten, lead, molybdenum, cobalt, thallium, manganese, iron, chromium, titanium, uranium, columbium or tantalum. The catalyst may be used in the form of a powder or may be supported on a carrier like silica gel, silicon carbide porous aggregates or pumice.  The monoketones, which may contain substituents such as halogen are converted by the process to the corresponding glyoxal, in which the keto groups are vicinal, and include diethyl ketone, cyclohexanone methyl propyl ketone and methyl benzyl ketone.  The oxidation is preferably carried out under such conditions that only 5-15 per cent conversion is obtained.  In the examples: (1) methyl ethyl ketone, oxygen and steam are passed over a cuprous oxide/silicon carbide catalyst at 275 DEG  C. to give diacetyl; (2) several catalysts are used for the reaction as in (1) and the results are compared; (3) amyl ketones, air and steam are passed over a cuprous oxide/silicon carbide to give methyl ethyl glyoxal; (4) methyl isopropyl glyoxal is obtained similarly from methyl isobutyl ketone.
Patent GB-340167-A (GB)
Title: Process of moulding articles in pure fused silica
IPC: C03B23/07
Filed: 1930-02-13
Abstract: 340,167. Fused silica. QUARTZ ET SILICE, 8, Rue d'Anjou, Paris. Feb. 13, 1930, No. 4889. Convention date, April 18, 1929. [Class 56.] A method of moulding an article of fused silica consists in attaching a silica blank to a mould with an airtight joint between them, and producing suction between the mould and one face of the blank while heat is applied to the other face. In the arrangement shown in Fig. 1, a plane blank 1 is fixed on the mould 2 by the aid of a packing which may consist of powdered graphite with a binder. The mould 2 may be of graphite or nickel, and it is provided with a tube 5 for connection to a vacuum pump. The exposed surface of the blank 1 is heated by an arc 6 or by an oxy-hydrogen blowpipe, and as soon as the silica begins to soften, the pressure of the atmosphere causes it to take up the shape of the mould. The blank need not be flat but may be of any shape, a cylindrical blank, for example, can be enclosed in a mould and softened by an are arranged in its interior.
Patent GB-702069-A (GB)
Title: Improvements relating to pressure butt welding
IPC: B23K11/14
Filed: 1951-02-28
Abstract: 702,069. Welding by pressure. OHIO CRANKSHAFT CO. Feb. 28, 1951 [Feb. 28, 1950], No. 4906/51. Class 83 (4) The surfaces of two solid members to be pressure butt welded are prepared for welding so that one surface includes at least one recess and the other surface includes at least one projection to enter the recess, the relative dimensions of recess and projection being such that when they are engaged prior to welding the remaining parts of the opposed surfaces are held spaced apart by a distance greater than the spacing between the end of the projection and the bottom of the recess. In an embodiment a frusto conical projection 15 is formed on a surface 12 of a rod 10 and a frusto conical recess 20 is formed on a surface 13 of a rod 11. The apex angle and the width of the projection 15 are greater than those of the recess 20 so that on bringing the rods 10, 11 together initially the corner 24 of the recess 20 engages the wall 16 of the projection 15 while the distance s between the surfaces 12, 13 is greater than the distance d between the top of the projection 15 and the bottom of the recess 20. Heating by high frequency, low frequency or direct current supplied longitudinally of the rods 10, 11, which may be supplemented by high frequency induction, combined with pressing the rods 10, 11 together effects welding. A duct 28 is provided from the recess 20 to allow escape of trapped air. A number of projections and recesses may be provided and they may be e.g. shaped sphericaliy. In a modification parallel ribs and troughs are formed across the opposite surfaces of two rods, the ribs of one surface engaging in the troughs of the other while as in the first embodiment the tops of the ribs do not initially reach the bottom of the troughs. The ribs and troughs may be arranged circumferentially. Heating by low frequency alternating or direct current supplied along the rods is employed. Specifications 702,068 and 702,070 are referred to.
Patent GB-1489491-A (GB)
Title: Frequency or speed determining means
IPC: G01P3/489
Filed: 1975-02-06
Abstract: 1489491 Measuring frequency digitally ASEA AB Feb 1975 [7 Feb 1974] 5054/75 Heading H3H To obtain an immediate representation of the frequency of a pulse train Fx, a counter 10 is preset in response to a pulse of Fx to a value corresponding to the highest frequency to be measured and after elapse of a time interval corresponding to the period of this highest frequency the counter is decremented at a rate F3 proportional to the square of its contents F, obtained by multipliers 12, 13, the contents of counter 10 being gated into a register 11 on detection of the next Fx pulse to give the required digital representation F L
Patent GB-511508-A (GB)
Title: Improvements in or relating to earthing devices for use with electrical systems
IPC: H01R4/66
Filed: 1938-02-18
Abstract: 511,508. Earth-rods. LONDON ELECTRIC WIRE CO. & SMITHS, Ltd., and STARLING, J. Feb. 18, 1938, No. 5106. [Class 36] [Also in Group XXII] To prevent buckling and distortion of the upper end of an earthing device in the form of a ribbed rod, such as the rods described in Specifications 423,385 and 430,040 a reinforcing means which tightly engages both the sides and the edges of the ribs is provided on the end of the rod, said reinforcing means consisting of, or comprising, a metal collar, preferably of mild steel, which is fitted over the rod and then forced into close engagement with the ribs. The collar may form a cap for the rod. As shown in Fig. 2, the reinforcing means comprises an internally threaded collar 2 and high carbon steel pins 4, which latter are driven into the spaces between the collar and the ribs of the rod 1 so as tightly to engage the sides of the ribs and also to distort the collar so that the screw-threads thereof bite into the edges of the ribs. Fig. 4 shows a modified construction wherein the pins are dispensed with and the collar is swaged around the sides of the ribs so that the screw-threaded surface of the collar bites into both the sides and edges of the ribs. In a further construction an unthreaded collar is swaged around the ribs, in a similar manner to that shown in Fig. 4, and tightly secured thereto by crimping.
Patent GB-1196551-A (GB)
Title: Improvements in or relating to Monitoring and Control Systems
Inventor: HOOK BRYAN HEDLEY
IPC: G07C3/00
Filed: 1968-02-01
Abstract: 1,196,551. Frequency discriminators. QUEST AUTOMATION SALES Ltd. 31 Jan., 1969 [1 Feb., 1968], No. 5114/68. Heading H3A. [Also in Division G1] A circuit in a system for monitoring and controlling a machine (see Division G1 has a terminal A<SP>10</SP> to which an A.C. signal from a speed sensor is applied and then passed through a monostable circuit 41 from which pulses are passed to an integrator 42 which transforms the pulses to a voltage level which is passed to a trigger circuit 43. The voltage level is proportional to the speed sensed and determines which of two transistors in the circuit 43 passes current, one passing current to terminal A<SP>1</SP> and the other to A<SP>3</SP> according to whether the level is below or above the voltage level at terminal A<SP>2</SP> which is preset to represent a desired rate of production.
Patent GB-686823-A (GB)
Title: Urethanes of aryl j acids
IPC: B30B15/18
Filed: 1948-02-20
Abstract: Alkyl urethanes of N-aryl-J-acids, of the general formula <FORM:0686823/IV (b)/1> wherein Ar represents aryl or substituted aryl (e.g. phenyl, naphthyl, alkylphenyl such as tolyl, alkoxyphenyl such as anisyl, or halogenophenyl such as chloro-, bromo-, iodo- or fluoro-phenyl) and R represents an alkyl group of at least 8 carbon atoms (e.g. octyl, decyl or octadecyl), are manufactured by agitating an N-aryl-J-acid with an alkyl chlorocarbonate in which the alkyl group contains at least 8 carbon atoms, at low temperatures in the presence of an acid-binding agent, e.g. an inorganic alkali such as sodium or potassium hydroxide, sodium alcoholate or sodium carbonate (in which case the reaction may be effected in an aqueous medium) or an organic base such as pyridine or quinoline (in which case it is preferable to use an organic solvent for the N-aryl-J-acid, e.g. formamide or its dimethyl or diethyl derivative).  An example describes the production of the octadecyl urethane of N-phenyl-J-acid.  The Specification as open to inspection under Sect. 91, comprises also the manufacture of compounds of the general formula above in which the alkyl group R contains less than 8 carbon atoms. Additional examples describe the preparation of the ethyl and butyl urethanes of N-phenyl-J-acid and the ethyl urethanes of N-p-anisyl-, N-p-tolyl- and N-p-chlorophenyl-J-acid, whilst reference is also made to the use of methyl, propyl and amyl chlorocarbonates. This subject-matter does not appear in the Specification as accepted.ALSO:As coupling components for the manufacture of azo dyes may be employed alkyl urethanes of N-aryl-J-acids, of the general formula <FORM:0686823/IV (c)/1> wherein Ar represents aryl or substituted aryl (e.g. phenyl, naphthyl, alkylphenyl such as tolyl, alkoxyphenyl such as anisyl, or halogenophenyl such as chloro-, bromo-, iodo- or fluorophenyl) and R represents an alkyl group of at least 8 carbon atoms (e.g. octyl, decyl or octadecyl).  The Specification as open to inspection under Sect. 91 comprises also the use of compounds in which R represents an alkyl group of less than 8 carbon atoms, e.g. methyl, ethyl, propyl, butyl or amyl.  This subject-matter does not appear in the Specification as accepted.
Patent GB-556762-A (GB)
Title: Improvements in electrical signal converting circuits
IPC: H04L27/08
Filed: 1942-04-17
Abstract: 556,762. Signalling by alternating current. WATSON, S. N., and WORSWICK, T. April 17, 1942, No. 5157. [Classes 40 (iii) and 40 (v)] An electrical circuit for coverting A.C. signals into double-current D.C. signals includes two electron-discharge devices the anode circuits of which carry respectively the two D.C. signal currents, means for applying to them biasing potentials such that in the absence of an A.C. signal their anode currents are substantially different, and rectifying means so associated with the biasing means as to change the sign of the difference in the anode currents when an A.C. signal is being received. In the circuit shown, the ends of the winding 1 of a teleprinter magnet are respectively connected to the anodes of two valves V1, V2. In the absence of a signal V1 passes a current controlled by the grid bias due to a resistance R 1 in the cathode circuit, and V2 is biased to cut-off point by the resistances R1 and R2 in series. When a signal is received in the input transformer T voltages are produced across the output resistances R3, R4 of two rectifiers 5, 6 in the grid circuits which increase the negative bias on V1 to cut-off point, and decrease that on V2 so that it passes an anode current about equal to that previously passed by V1, thus reversing the D.C. current in winding 1. Should incoming signals of large amplitude tend to produce a bias on V2 greater than the voltage across R2 a diode D becomes conductive, and holds the bias potential substantially to that of the junction between the resistances R1, R2.
Patent GB-234558-A (GB)
Title: Improvements in photographic projection devices
IPC: G03B27/54
Filed: 1924-02-29
Abstract: 234,558. Montigny, A. Sept. 28, 1923, [Convention date]. Addition to 222,431. Enlarging, copying, and reducing.-In the projection apparatus described in the parent Specification, the lighting circuit for the opaque body, comprising a luminous source 10 and rheostat 11, may be independently controlled by a switch 5<a>, or it can be connected by means of a contact plug 7 in parallel with the lighting circuit 1 of the transparent body and controlled by the switch 5 of that circuit.
Patent GB-470711-A (GB)
Title: Improvements in and relating to electric motor control systems
IPC: H02P3/20
Filed: 1936-02-21
Abstract: 470,711. Control of A.C. and D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., and BENNS, H. V. Feb. 21, 1936, No. 5288. [Class 38 (iii)] Dynamo-electric braking.-A motor is connected to its supply by operating a switch c1 to energize the coil a of a contactor A, the coil d1 of a magnetic induction time delay relay also being energized over contacts a2 of the contactor A to close contacts d3. When it is desired to stop the motor the switch cl is opened, the contactor A de-energized, and the coil b of the reverse contactor B energized over back contacts al of the contactor A and the contacts d3. When the contactor A opens contacts a3 are closed, and contacts a2 opened so that the coil dl of the time relay is de-energized and short-circuited. After a predetermined time this relay opens its contacts d3 and de-energizes the reverse contactor B, so that the motor is disconnected. Similar control in the reverse direction of rotation is effected by a switch c2 and a time relay el. The time relays are supplied through a bridge connected full wave rectifier F. The system is applicable to star-delta and auto-transformer starting arrangements. Specification 345,785 is referred to.
Patent GB-1153805-A (GB)
Title: Rectifiers
Inventor: GORODETSKY IGOR YAKOVLEVICH
IPC: B01D3/10
Filed: 1967-02-03
Abstract: 1,153,805. Distillation columns. GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY I PROEKTNY INSTITUT AZOTNOI PROMYSHLENNOSTI I PRODUKTOV ORGANICHESKOGO SINTEZA. 3 Feb., 1967, No. 5300/67. Heading B1B. A liquid mixture is submitted to fractional distillation under reduced pressure in a vertical column 1 surrounded by a heating jacket 2, the vapours being condensed on a cooled pipe 10 provided, at different heights, with a plurality of conical surfaces 14 each having a flanged opening 17 for ascending vapour and a netted rim 15 which distributes partial condensate onto the internal surface of the column. The liquid to be fractionated is vaporized, and the mixture of vapours is introduced into the column through inlet 3. Partial condensation on tube 10 and re-evaporation on the internal surface of the column take place; and the vapour rises in crisscross fashion owing to the disposition of the openings 17 in the conical surfaces 14. Vapour leaving the top of the column, through outlet 4, flows to a reflux condenser. The reflux is returned to the column through pipe 5, and is distributed by cone 20 onto the uppermost conical surface 14. The liquid reaching the base of the column is returned to the feed evaporator through outlet 6. When the fractionation is to be carried out continuously, the feed liquid is introduced into the column through inlet 7. An apparatus of large capacity is described, this apparatus being assembled from six columns, of the type described, arranged in two sections, one above the other, each section comprising three columns. (For Figures see next column)
Patent GB-1237701-A (GB)
Title: Improvements in or relating to metering pumps of the reciprocating type
Inventor: JARDINE ROBERT WILLIAM
IPC: G01F11/02
Filed: 1968-02-02
Abstract: 1,237,701. Reciprocating pumps. SIMON HANDLING ENGS. Ltd. Jan.28, 1969 [Feb. 2, 1968], No. 5372/68. Heading F1A. In a variable capacity reciprocating pump the piston 8 is actuated by an air motor 10 controlled by a solenoid provided with reed switches operated by a magnetized motor piston. On its forward stroke piston 8 expels liquid through an outlet 4 until it abuts a second piston 7 of equal crosssectional area biased towards the chamber 2 by, for example, air pressure acting through a port 9, or a spring, the piston then moving with piston 8 until the solenoid reverses the stroke. The volume between the two pistons determines the volume of liquid delivered and is variable by means of a threaded rod 13 attached to piston 7 and provided with an internally threaded sleeve 14 and locknut 15. The Specification states that an electronic counting device controlled by a punched card system controls and counts the number of strokes of piston 8.
Patent GB-583520-A (GB)
Title: Improvements in mechanical copying machines
IPC: B23Q35/128
Filed: 1944-03-23
Abstract: 583,520. Photo electric control of copying-machines. LINDE AIR PRODUCTS CO. March 23, 1944, No. 5420. Convention date, Feb. 19, 1943. Addition to 561,171. [Class 40 (iii)] [Also in Group XXXV] The contour reproducing means described in the parent Specification is modified by replacing the mechanical switch for controlling the electric feed motors by an electronic switch which provides a more constant tracking speed. The switch includes electron tubes 144-147, the anodes of which are fed from a four-phase circuit comprising the tapped secondary windings 119, 120 of Scott-connected transformers 117, 118 supplied through lines 91-93. The control grids of the tubes are paralleled and controlled by a further tube 116 which amplifies the output of the photo-electric cell 33 used as the tracer. The windings 62-65 of the Ward- Leonard generators 53, 54 are arranged in the anode circuits of tubes 144-147 and the windings 60, 61 of the feed motors 19, 20 are energized by rectifiers 98, 99 supplied through a Scott connection 94-97, the rectifiers also providing excitation for the synchronous motor 196 driving the shutter associated with the photo-electric cell, as well as energizing potentiometers 132, 138, whereby the gain of tube 116 and cell 33 may be adjusted. Switches A-D permit connection of the anodes of any of tubes 144-147 to the rectifiers, so as to provide an over-riding control whereby the tracer may be driven into position on the contour. A modified form of shutter is also described.
Patent GB-1173971-A (GB)
Title: An Improved Joint Assembly
Inventor: BUSCHOW HERMAN FRED
IPC: F16L23/12
Filed: 1967-02-06
Abstract: 1,173,971. Welding by fusion. HYDRO-CARBON RESEARCH Inc. 6 Feb., 1967, No. 5613/67. Heading B3R. [Also in Divisions F2 and G1] A joint assembly for coupling a pipe 10 of a first metal, such as aluminium, to a pipe 12 of a second metal such as stainless steel comprises a first flanged annular member 14 of said first metal adapted to be welded at 22 to said pipe 10, a second flanged annular member 18 of said second member adapted to be welded to said pipe 12, and a composite gasket 32 formed by integrally-united rings 25a and 25b of said first and second metals respectively, each welded around its periphery at 34 and 35 to the respective annular member 14 or 18 of the same metal, said rings being integrally united by casting the metal of one ring on the other to form interface alloy layer therebetween. As shown, the flanged member 14 is provided with a loose collar 16 which is bolted to the other flanged member 18. Alternatively, both flanged elements may be provided with loose collars or both collars may be omitted, Fig. 4 (not shown). In a further embodiment, Fig. 8 (not shown), the flanged members are locked together by a C-shaped clamp. As described, the aluminium ring 25a is cast on to the stainless steel ring 25b which has been pre-heated and dipped in a hot fluoride flux, the resulting assembly being cooled to give the desired aluminium/stainless steel alloy bonding interface layer. As shown, the rings 25a and 25b are provided with annular lands and projections 37, 36, whilst Figs. 2-8 (not shown), illustrate modifications of the ring forms. The composite gasket is preferably formed with a recess 32 around the periphery to give flexible annular flanged portions which are welded to the associated first and second flanged annular members. The members of aluminium may be alternatively of copper or other non-ferrous metal and the stainless steel members may be of austenitic steel or other ferrous metal.