baber/WOPTO huggingface dataset:
Patent GB-1273131-A (GB)
Title: Screw conveyor and/or mixing apparatus
Inventor: CHRISTIAN JOSEPH DENNIS
IPC: B01F7/00
Filed: 1968-05-21
Abstract: 1,273,131. Mixing apparatus. PACKAGED POWER TERMINALS Inc. 9 May, 1969 [21 May, 1968], No. 24127/68. Heading B1C. [Also in Divisions B8 and F4] A screw mixing and heat exchange apparatus has at least one helical ribbon screw (in the embodiment of Fig. 1, two which intermesh, only are being depicted) attached at the ends only to a tubular support shaft 11, the intermediate portion being supported by lugs 124 attached to the screw but free to slide on the shaft and providing a waking space between the screw and the shaft. The ribbon may be detachable. Within the shaft 11 is a tubular drive shaft 10. Heat exchange medium enters at 48 and passes along the annular space between the tubes 41, 50 to a chamber at the end of tube 10 defined by a plug 32, and thence divides into two streams one of which passes through passage 30 into the hollow helical ribbon and the other through passage 33 into the annular space 13 between tubes 10, 11 in which is a square section helical divider 12 to promote turbulence and cause the medium to follow a helical path. The medium is discharged into a chamber, at the other end of tube 10, defined by a plug 55, and passes back through tubes 54, 50 to an outlet 45B. The screw is rotated by sprockets 70, 71 on shaft 66 and rotates the other screw (not depicted) through gear 75. The screw depicted is also axially reciprocated; bevel gears 76, 77 rotate shaft 78 which reciprocates crank arms 79, 80 and hence shafts 81, 66. The screws may be fabricated from two plates 16, 17 welded together; the plates may be cut from discs and joined end-to-end, and the screw sections thus formed may have separate heat exchange medium supplies. The screw may be of various cross-sections (see Figs. 4-8, not shown), and preferably the space between the screw and the shaft is 6-20% of the radial width of the helical ribbon. In operation the screws flex axially like a spring; where one is reciprocated, the stroke may be such as to cause the faces of the screws to dwell in contact and thus be self-cleaning. Materials enter at 88 and leave at 89. Reference has been directed by the Comptroller to Specification 892,506.
Patent GB-1413719-A (GB)
Title: Aluminium/magnesium/silicon alloys
IPC: B23K35/02
Filed: 1973-05-21
Abstract: 1413719 Al/Mg/Si alloy CEGEDUR SOC DE TRANSFORMATION DE L'ALUMINIUM PECHINEY 21 May 1973 [23 May 1972] 24138/73 Heading C7A An Al/Mg/Si alloy of composition:- The alloy may be used in the production of brazed articles e.g. heat exchangers by homogenizing at 580‹C, hot and cold rolling to size, coating with brazing flux, brazing at 600 to 620‹C in an air, controlled atmosphere or vacuum furnace using an Al/Si brazing alloy, cooling under a gaseous fluid e.g. air at 1‹C/second, cleaning and heating to 150‹C to 245‹C for ten minutes to one hour. The brazing alloy may be disposed between layers of the alloy of the invention or an intermediate alloy of the same composition as the alloy of the invention but containing less than 0.1% magnesium may be located between the brazing alloy and the alloy of the invention.
Patent GB-908760-A (GB)
Title: Improvements in or relating to measuring vessels for laboratory use
IPC: G01F19/00
Filed: 1961-07-04
Abstract: 908,760. Measuring vessels. ETABLISSEMENTS R. AYMONIN ET R. DELOT. July 4, 1961 [Aug. 2, 1960; Dec. 14, 1960], No. 24152/61. Class 106 (5). A measuring vessel is composed of two detachable interfitting parts, a graduated tubular glass portion 1 and a polygonal plastic foot 3. The bottom of the tubular portion 1 preferably has an additional tubular element 2 welded or adhered to it and the element 2 fits either within a bore having resilient internal teeth 9 or over a spigot having external resilient teeth. A hole or slot 7 prevents any suction effect of the foot 3.
Patent GB-393258-A (GB)
Title: Improvements in the introduction of chemically active substances into vacuum tubes
IPC: H01J9/395
Filed: 1931-08-28
Abstract: 393,258. Electron-discharge tubes. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Aug. 28, 1931, No. 24253. Convention date, Nov. 15, 1930. Void [Published under Sect. 91 of the Acts]. [Class 39 (i).] An active metal, e.g. an alkali or alkaline earth metal, suitable for use as an electronemitting cathode coating or as a getter is introduced into an electron discharge tube in the form of an electrically insulating mixture of the metal with an insulating material or in the form of a mixture of a compound or alloy from which the metal may be developed with a quantity of the insulating material such that the mixture remains electrically insulating even after the metal has been developed. Any tendency to set up electrical connection between the electrodes through portions of the mixture which may become detached is thus avoided. In an example an electrically insulating mixture of barium with magnesia or zirconia is introduced into a pocket 5 formed on the anode 2 of a thermionic tube provided with a cathode 4 and grid 3. Such a mixture may be obtained by beating a mixture of barium azide (1 part) with magnesia or zirconia (15 parts) in a vacuum or in an inert atmosphere, e.g. in the discharge tube itself, to a temperature sufficient to drive off the nitrogen while retaining the barium. Alternatively a mixture of an excess of barium oxide with a reducing agent may be used. The pocket 5 may communicate with the inside of the anode through a network or grating. After exhausting the tube the mixture is heated e.g. by a high frequency magnetic field, to vaporize barium on to the cathode.
Patent GB-1349903-A (GB)
Title: High pressure centrifugal pump assembly
IPC: F04D1/06
Filed: 1971-04-19
Abstract: 1349903 Seals SUNDSTRAND CORP 19 April 1971 [23 April 1970] 24260/71 Heading F2B A centrifugal pump assembly comprises a main centrifugal pump having an impeller 100, Fig. 2, an axial inlet 22 and a generally tangential outlet 24. Seal means 32, 34 are provided for the main pump, and centrifugal seal means 36 are provided between the seal means 32, 34 and the impeller 100, the seal means 36 being constructed to deliver fluid towards the impeller at a pressure above the fluid pressure at the inlet 22.  As described the main pump constitutes the second stage unit 14 of a two stage pump the first unit 12 of which is shown in Fig. 1. The two units are driven from a gear-box by a common shaft 16 on which are mounted impellers 52, 100, centrifugal seal 36, and mechanical seals 26, 28, 32, 34. Each mechanical seal comprises a fixed part 65, 68, 120 or 122 and a part 66, 72, 121 or 125 which rotates with the shaft 16. Passages 74 and 114 are provided in the pump bodies for introducing seal flush fluid to the mechanical seals. The centrifugal seal comprises rotary impellers 128, 129, 130 having vanes 136 which cooperate with fixed radial vanes 138 to urge fluid along the shaft 16. In the operation of the embodiment fluid enters the unit 12 via inlet 20 and is pumped by impeller 52 into a cross-over pipe which leads it into inlet 22 of unit 14. Then it is pumped by impeller 100 into outlet 24. Fluid leaking along a sleeve 76 in the unit 12 is bled via passages 79, 80 in that unit and passages 82, 142, 143 in unit 14 to one end of the seal 36. The impellers of that seal then pump the fluid towards the impeller 100 at a greater pressure than that of fluid entering via inlet 22. In a second embodiment for pumping corrosive fluid passages 80 and 82 are plugged and a buffer fluid is supplied via passages 151, Fig. 1, and 160, Fig. 2. In the unit 12 the buffer fluid is pumped by an additional impeller 156 to the sleeve 76 at a pressure greater than the pressure of fluid in inlet 20. In the unit 14 the buffer fluid is pumped by the impellers of seal 36 towards the impeller 100 at a pressure greater than that of the fluid in inlet 22.
Patent GB-942115-A (GB)
Title: Organotin derivatives
IPC: C08G18/24
Filed: 1962-06-25
Abstract: The invention comprises organotin methane-and thiomethane-sulphonates of formula: (R)x-Sn-(Z-SO2-CH3)4-x where each R is a C1-C12 alkyl group, a phenyl or naphthyl group, Z is oxygen or sulphur and x is 2 or 3.  They may be prepared by reacting a mesyl derivative of formula M-Z-SO2-CH3 where Z is as defined above and M is hydrogen, ammonium or an alkali metal with an organotin derivative of one of the following formulae: (a) (R)4-Sn (b)  (R)2-Sn=O (c) (R)3-Sn-Cl and (d) (R)2-Sn-Cl2 where R is as defined above. Using (a) or (b), the mesyl derivative is used in its acid form, and using (c) or (d) the mesyl derivative is used as the ammonium or alkali metal salt.  An inert organic solvent such as an aromatic hydrocarbon (benzene, toluene or xylene) or a polyalkylene glycol ether (diethylene glycol dimethyl or diethyl ether) may be used as reaction medium.ALSO:Polyurethane foams may be made by reacting isocyanates with glycol intermediates such as polyetherglycols in the presence of an organotin compound of formula: (R)x-Sn-(Z-SO2-CH3)4-x wherein each R is a C1-C12 alkyl group, a phenyl or naphthyl group. Z is oxygen or sulphur and x is 2 or 3. Typical compounds are di-n-propyltin bis-methane-sulphonate and tri-n-butyltin methanethiolsulphonate.ALSO:Organotin methane- and thiomethane-sulphonates of formula (R)x-Sn-(Z-SO2-CH3)4-x where R is C1-C12 alkyl, a phenyl or naphthyl group, Z is O or S p  and x is 2 or 3, may be used as insecticides, herbicides and fungicides.
Patent GB-774415-A (GB)
Title: An improved air conditioning plant
Inventor: BARR JOHN CHARLES
IPC: F24F5/00
Filed: 1954-08-20
Abstract: 774,415. Drying air; refrigerating. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Aug. 19, 1955 [Aug. 20, 1954], No. 24371/54. Classes 29 and 34(1) In the production of a supply of air of controlled humidity and temperature air inhaled by a compressor 1 from the atmosphere is discharged through a water-cooler 2 and a heat exchanger 3 to a turbine 4 where expansion causes freezing of at least part of the water content the ice crystals being removed by a separator 5 and the air being reheated in the heat exchanger 3. The compressor 1 and turbine 4 are on a common shaft with a steam turbine 7 and a water separator between the heat exchanger and the turbine removes suspended condensate produced by cooler 2 and heat exchanger 3. The turbine 4 has its blades internally heated by steam bled from turbine 7, to prevent ice deposition thereon.
Patent GB-534224-A (GB)
Title: Improvements in and relating to gas blast electric switches
IPC: H01H33/16
Filed: 1939-08-24
Abstract: 534,224. Gas-blast switches. FLURSCHEIM, C.H., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Aug. 24, 1939, No. 24389. [Class 38 (v)] A gas-blast circuit-breaker employing a pneumatically-retracted contact 2 mounted on a piston in an interrupting head 1, has a resistance 9 connected between an auxiliary contact 6 and the metal arm 3 supporting the head 1 so as to be fixed relatively to the latter. The arm 3 is mounted on an insulator 4 which is rotatable about its longitudinal axis to provide an isolating gap and carries a gas-supply pipe 5 leading to the head from a source on the base (not shown). The resistance may comprise a wire wound on an arm 7 on an extension 8 of arm 3, or the arm may be formed of a resistance-liquid containing tube or of carbon. The co-operating contact may be mounted in a similar, but oppositely-rotating, structure 10, 11, 12 which may also have a resistance, but the Specification refers also to a form in which contacts in a pair of fixed heads are bridged by a pivoted conducting bar and in which a separate isolating switch is employed. In a modification. Fig. 2 (not shown), the arm is attached to a cylindrical insulating weather casing forming an extension of insulator 4 and housing the resistance, so reducing the rotational inertia of the arrangement. Specification 530,338 is referred to.
Patent GB-477427-A (GB)
Title: Improvements in rotary numbering boxes
IPC: B41K3/12
Filed: 1936-09-08
Abstract: 477,427. Number-printing apparatus. SUESS, P. W. Sept. 8, 1936, No. 24454. Addition to 443,595. [Class 100 (ii)] In a numbering-box of the kind in which ratchet - actuated wheels are mounted on a spindle which can be moved axially to free the wheels, the axial movement is sufficient to free the entire set of wheels and means are provided to hold the spindle against rotation during such axial movement. In one form, the spindle 11 is provided with a groove 19 in which engages a spring-pressed pin 23 such as that described in the parent Specification. The spindle is moved axially as shown by an auxiliary spindle 29 moved into position completely within the set of wheels by a pusher 31. The wheels with the spindle 29 can then be removed from the box. When the wheels and spindle 11 are in normal position the spindle is locked by the pin 23 engaging a hole 24. Instead of or in addition to the hole 24, the spindle may be provided with a circumferential slot into which the pin 23 may enter by a slight rotary movement of the spindle when in axial position. In a modification, the drop - cypher groove in the spindle may serve instead of the groove 19, a projection being integral with or secured to the end wall of the box to engage the groove. In a further modification the spindle may have a flat surface extending for most of its length, the hole in one end wall of the box being correspondingly shaped.
Patent GB-791943-A (GB)
Title: An electrically operated instrument for the control of mechanism
IPC: G04F8/08
Filed: 1954-08-24
Abstract: 791,943. Electricity supply, condenser arrangements. CUSS, T. P. C., EASTWOOD, L., and SMITH, T. H. BEVIS-. Aug. 11, 1955 [Aug. 24, 1954], No. 24565/54. Class 38 (4). An instrument for controlling mechanism such as a stop-watch comprises a solenoidoperated arm positioned to strike against the control spindle of the watch, for example, so as to start and stop the watch. A control system for the solenoid-coil 8 comprises a relay RA which is energized when terminals. Ta, Tb are connected so that contacts RA1, RA2 disengage contacts 2, 5, and engage contacts 3, 6. The capacitor C2 (previously charged through rectifier W1) discharges through the solenoid 8 and the watch is started by the arm striking against the control spindle. At the same time, a capacitor C3 is charged. Disconnection of the terminals Ta, Tb causes the contacts RA1, RA2 to return to their former positions whereby the capacitor C3 discharges through the solenoid 8 and the watch is stopped. In another arrangement,. momentary connection of terminals 44, 45 causes a surge of charging current to pass through relay A/1 from the supply battery to capacitor 43. The change-over contact A1 then connects capacitor 52 to the solenoid and almost immediately is returned to the charging position. The terminals 44, 45 are then disconnected to allow capacitor 43 to discharge into resistor 46. A further connection between the terminals will cause the watch to be stopped. A combined circuit may be provided having selector switches for modifying the circuit so that operation in either of the two methods described above may be afforded, Fig. 6 (not shown).
Patent GB-289699-A (GB)
Title: Improvements in or relating to fire escapes
IPC: A62B1/20
Filed: 1927-09-19
Abstract: 289,699. Sokal, S., (Espinheira & Co., L.). Sept. 19, 1927 S h o o t s; portable wheeled escapes. - A fire-escape shoot has at its upper end a framework by which it is mounted on a ladder or other fireman's lifesaving apparatus in such a way as to be brought automatically to the " ready " position. A rrope secured to the shoot throughout its length co-operates with guides on the ladder to hold the shoot in service position. The shoot A has secured to it a rope R and has at its mouth a frame K to which is pivoted a framework comprising side rods and cross pieces E. L, Fig. 6. As applied to a mechanical ladder, Fig. 3, pins D, D' on the side rods of the framework rest in hooks e on the ladder when the latter is at rest. The rope R of the shoot is guided by rolls P, P<1>, Fig. 8, mounted on the lowest stage of the ladder at the point marked c, Fig. 3. The lower end of the shoot is coiled on a reel J with the shoot stretched. For service, the reel J is released so that the shoot becomes slack, allowing the framework E, L to swing about the pivot points e until the cross-bar E of the framework engages at points F, F<1> in hooks B at the top rung of the ladder. The mouth of the shoot then hangs from the top of the ladder in the position shown in Fig. 6, and the ladder is elevated to the window from which escape is to be made. Finally, the rope R is jammed against the rolls P, P<1> by means of a shaft M, Fig. 8, eccentric M, rod 0, and hand-lever, fixing the shoot rigidly at this point to take the shock of descent from the upper stages of the ladder. The shoot may be similarly mounted on telescopic extensible columns. After use, the shoot may be disengaged from the head of the ladder by a rope and pulley.
Patent GB-743089-A (GB)
Title: Improvements in upholstered chairs
Inventor: JARVIS ALBERT STANLEY
IPC: A47C31/02
Filed: 1953-09-07
Abstract: 743,089. Seats; upholstery. LEA BRIDGE INDUSTRIES, Ltd. Aug. 23, 1954 [Sept. 7, 1953], No. 24672/53. Classes 52(2) and 52(4). An upholstered chair with a wooden base A and frame of tubular metal consisting of side frames joined by cross rails has a bulged formation such as a head-rest 16 formed by pleating the outer covering 11 on a line lying across the general direction of tension when in use, the material 13 of the pleat 12 being tucked into the padding and anchored to a rear frame element 9 by tension springs 15 attached to eyelets 14 inserted at each side of the folded material. The arrangement may also be applied to arm rests 17 or a back-of-the-knee bulge 18.
Patent GB-878728-A (GB)
Title: Aldose derivatives
IPC: C07H15/12
Filed: 1959-07-17
Abstract: The invention comprises an aldose derivative of the formula: <FORM:0878728/IV (b)/1> inclusive of the a  and b  forms and wherein R1 represents a carboxylic acyl group, R2 and R3 are the same or different and represent hydrogen atoms or organic radicals or with the adjacent nitrogen atom constitute a heterocyclic radical, the said radicals containing no acidifying group and n is an integer from 3 to 7.  Preferred compounds are those in which n=5 or 6 and R1 an unsubstituted carboxylic acyl group, e.g. of a fatty acid containing at least 11 carbon atoms, R2 is preferably a hydrogen atom and R3 is preferably a b -hydroxy ethyl, p  carbamoyl, thiocarbamoyl, ureide, amine or amide group (including an amide in which the nitrogen forms part of a second aldose derivative of the above formula).  The novel compounds are made by reacting an aldosimine (in which R1 is H) with an ester of the formula R5OR1, where R5 is derived from an alcohol R5OH containing not more than six carbon atoms.  It is preferable to use an inert solvent, e.g. dimethyl formamide, pyridine or morpholine, at 20 DEG  to 100 DEG C. for 20 to 2 hours, operating under reduced pressure to remove R5OH and passing an inert gas through the mixture.  A base may be used as catalyst, e.g. potassium carbonate, calcium oxide or calcium hydride.  As additional catalyst an oxide or carbonate of a metal of Atomic Number from 24 to 30 may be used, e.g. zinc oxide may be used with potassium carbonate. Specified products include 6-stearoyl-N-b -hydroxyethyl glucosimine, 6-oleoyl-glucose ureide, 6-palmitoyl-glucose ureide, 6-lauroyl-glucose ureide, 6-stearoyl-galactose ureide, 6-stearoyl-arabinose ureide, 6-stearoyl-glucose semicarbazone, 6-stearoyl glucose thioureide, 6-stearoyl glucosimine, 6-stearoyl-N-phenyl-glucosimine, 6-stearoyl-piperidine glucoside, and di-(6-stearoyl-xylose) ureide.
Patent GB-1093493-A (GB)
Title: Improvements in or relating to apparatus for measuring the mass flow of fluids
Inventor: MATTHEWS ROBERT BARRY
IPC: G01F1/80
Filed: 1963-06-21
Abstract: 1,093,493. Rotary mass-flowmeters. PLESSEY-UK Ltd. June 10, 1964 [June 21, 1963], No.24739/63. Heading F1F. A rotary mass-flowmeter comprising a stationary deflector means 10 imparting a swirl to the fluid to be measured, a speed rotor 4 having axially extending blades 11 for measuring the rate of swirl thus produced, and a torqueresponsive rotor 5 having axially extending blades 12 for measuring torque produced by the swirling movement, wherein the mass-flow is determined by the quotient of the two measurements, includes surfaces at the inlet and outlet end of each rotor outside the main flow-path equal in area to the cross-sectional area of the flow-path so that the axial thrusts acting on each rotor are substantially balanced. Stationary fairing sections 2, 3 and a stationary flanged partition 7 between the rotors are formed with recesses to provide chambers 14, 15, 16, 17 to which pressure fluid is admitted. Chambers 14, 17 are subjected to the pressure between the rotors conveyed through a duct 18 and the chambers 15, 16 to the pressure upstream and downstream of the rotors respectively conveyed through ducts 21, 22. The rotors are supported in sapphire bearings.
Patent GB-1504378-A (GB)
Title: Process for preparing concrete and prefabricated masonry structures
IPC: C04B28/02
Filed: 1975-06-10
Abstract: 1504378 Latex-modified cementitious compositions DOW CHEMICAL CO 10 June 1975 [12 June 1974 (2)] 24865/75 Heading C1H A concrete or prefabricated masonry structure is prepared by heating, at 38‹ to 121‹ C. under less than 80% relative humidity for from 4 to 24 hours, a non-cured cementitious composition or a structure comprising a non-cured cementitious composition, the composition comprising a portland cement or a portland cement mortar containing a vinylidene chloride polymer latex (defined) in an amount to provide from 5 to 22 wt. per cent, based on the cement, of polymer solids. The term "vinylidene chloride polymer latex" is defined as any aqueous colloidal dispersion of an organic interpolymer, the interpolymer being composed of 35 to 90 parts by weight vinylidene chloride, and 65 to 10 parts by weight of at least one other interpolymerized monomer of the general formula wherein R is H or Me and X is -CN, -F, -Cl, -Br, or -COOY wherein Y is a primary C 1 -C 18  alkyl or a secondary C 1-18  alkyl group. The composition may contain mineral aggregate, e.g. stone, gravel, pebbles, granite, carborundum, aluminium oxide, emery, marble chips, cinders, sand or lightweight aggregate and a workability agent, e.g. calcite, dolomite, and magnesite. Formulations used in the examples contain, besides the cement and latex, workability agent, sand, silicone antifoamer and nonionic surfactant (Example 1); pea gravel and sand (Example 2-Mix B) and sand and lightweight aggregate (Example 2-Mix D).
Patent GB-1166329-A (GB)
Title: Pneumatic Vehicle Tyre.
IPC: B60C9/28
Filed: 1967-05-31
Abstract: 1,166,329. Pneumatic tyres. CONTINENTAL GUMMI. WERKE A.G. 31 May, 1967 [15 June, 1966], No. 24991/67. Heading B7C. A pneumatic tyre comprises a carcass ply 3 of parallel cords, threads or wires extending from bead to bead, which cords in tread region 7 form an acute angle with the circumferential direction and in the side walls form an acute angle (substantially but not exactly a rightangle) with said circumferential direction, one or more parallel cord tread-reinforcing plies 21... 23 whose cords extend at equal and opposite acute angles to be symmetrical together with ply 3, and each sidewall having an additional ply 25 of parallel cords &c. extending from the associated bead to the adjacent shoulder, the cords making an acute angle with the underlying carcass cords 3. The cords of each ply 3, 25 make an angle of between 5 degrees and 15 degrees with the radial and are symmetrical with respect thereto.