baber/WOPTO huggingface dataset:
Patent GB-1110990-A (GB)
Title: Noise nulling network for magnetic flowmeter
IPC: G01F1/58
Filed: 1967-04-04
Abstract: 1,110,990. Measuring fluid-flow electromagnetically. NEW YORK AIR BRAKE CO. April 4, 1967 [June 29, 1966], No.13596/67. Heading G1N. In an induction flowmeter, the output voltage, (the voltage induced in the fluid by the A. C. magnetic field between coils 16, 17, Fig. 1, and detected by electrodes 19, 21), across leads 13, 14 comprises a part proportional to the rate of fluid-flow together with a spurious noise voltage induced in the leads and fluid by the A. C. magnetic field. These latter voltages are nulled by including in one or both leads 13, 14 a circuit 23 comprising a tapped coil 25, preferably but not necessarily centre-tapped, in series with a capacitor 27 or inductor and a variable resistor 26, the two parts 13a, 13b of the lead 13 being connected to the top of the coil and the junction between the resistor and capacitor. With the fluid in the pipe 15 stationary and the flowmeter operating, the coil 25 and leads 13, 14 are so orientated in the magnetic field to provide a signal whose amplitude is equal to the noise signal and the resistor is adjusted until this signal is 180 degrees out of phase with the noise signal so that with a stationary fluid there is zero output on leads 13, 14. In a modification a voltage divider (28), Fig. 3 (not shown), may be connected between the lead 136 and the circuit 23 by which the nulling voltage amplitude may be adjusted.
Patent GB-914900-A (GB)
Title: Improvements in or relating to didactic counting devices
Inventor: TACEY CHARLES ARTHUR
IPC: G09B19/02
Filed: 1960-05-03
Abstract: 914,900. Educational appliances. PHILIP & TACEY Ltd. March 27, 1961 [May 3, 1960], No. 15471/60. Class 146 (2). An educational counting device comprises a number of pegs 14 the upper and lower halves of contrasting colours 14a, 14b and a board comprising, e.g. a shallow box 11 with a lid 12. The depth of the apertures 13 being such that only one colour shows when the peg is inserted. The pegs may be of moulded plastic, may be circular, and each end may be differentiated by shape.
Patent GB-502158-A (GB)
Title: Improved process for the preparation of alkali metal nitrates
IPC: C01D9/10
Filed: 1937-06-04
Abstract: 502,158. Alkali metal nitrates; ammonium chloride. SOC. D'ETUDES POUR LA FABRICATION ET L'EMPLOI DES ENGRAIS CHIMIQUES. June 4, 1937, No. 15556. Void. Convention date, June 5, 1936. [Classes I (ii) and 1 (iii)] In obtaining alkali metal nitrates by a double decomposition between alkali metal chlorides and ammonium nitrate, with the separation of ammonium chloride at elevated temperatures and the separation of the nitrates after cooling, the double decomposition is effected in mother liquors containing more than one alkali metal nitrate. The variation of the solubility of the required alkali metal nitrate or nitrates with temperature is thereby increased while that of the ammonium chloride is at the same time reduced. Sodium nitrate may be obtained by reacting sodium chloride and ammonium nitrate in mother-liquors saturated with sodium nitrate at the lowest temperature of the cycle and also containing potassium nitrate, and similarly potassium nitrate can be obtained while using mother liquors containing sodium nitrate. A mixture of sodium and potassium nitrates is produced by reacting a mixture of sodium and potassium chlorides, or sylvanite, and ammonium nitrate in a mother liquor saturated with potassium and sodium nitrates at the lowest temperature of the cycle. The nitrates obtained may be freed from residual ammonium chloride by washing with water.
Patent GB-218651-A (GB)
Title: Improvements in electric heating units
IPC: H05B3/16
Filed: 1924-06-30
Abstract: 218,651. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Woodson, J. P.). July 6, 1923, [Convention date]. Wire and ribbon resistances mounted on grooved surfaces.-An electric heater comprises a plurality of refractory bars 12 supported adjacent one another by means of angle-bars 25 made of suitable non-oxidizable material such as nickel-chromium alloy, plates 26 and bolts 28. Each bar 12 is provided with undercut grooves 13 as shown in Fig 3 for the retention of a resistance member 19. Bolts 22 and nuts 23 acting as terminals are mounted in insulating bars 16 placed at each end of the series of refractory bars 12. Ridges 18 substantially H-shaped are formed in the end-bars 16 as shown in Fig. 1 the depressions 15 so formed serving to retain the parts of the resistance member 19 leading to the terminals and from one groove to the next.
Patent GB-181604-A (GB)
Title: Improvements in apparatus for delivering measured quantities of liquids
IPC: B67D7/16
Filed: 1921-06-07
Abstract: 181,604. Moorhouse, A. H. June 7, 1921. Fired-chamber apparatus with open chambers; with counting &c. apparatus; valve systems for.-Apparatus for delivering measured quantities of petrol &c. comprises a calibrated vessel into which the liquid is pumped, provided with inlet, outlet, and overflow pipes, the inlet and outlet pipes being controlled by a two-way valve and the overflow pipe having a transparent part so that it indicates when the calibrated vessel is full. Means may be provided for dealing with more than one liquid. The calibrated vessel h, Fig. 1, is supplied through a pipe c by a hand-pump a; the overflow pipe d leads back to the supply tank and has a glass portion e; and the two-way valve f is adapted to cut off communication with the pump when turned so that a delivery-pipe g is put into communication with the calibrated vessel. A perforated tray i in the vessel enables displacers j to be inserted to adjust its capacity, and a filter k may be provided in the pump supply-pipe h. Fig. 2 shows how two liquids such as petrol and benzol contained in tanks n and o respectively may be supplied to the apparatus by pipes h and m, either pipe being put into communication with the pump by a valve p which simultaneously connects the corresponding overflow pipe g or r with the pipe d. Counting- apparatus t may be fitted to the handle s of the valve f.
Patent GB-1224692-A (GB)
Title: Knitted fabric
IPC: D04B21/04
Filed: 1969-03-26
Abstract: 1,224,692. Knitting. FARBWERKE HOECHST A.G. 26 March, 1969 [26 March, 1968], No. 15863/69. Heading D1K; A warp knitted product having a bouclÚ type surface on the purl side has the loops forming the bouclÚ type surface formed from a textured yarn of filaments of a synthetic .linear high polymer whereby the thickness of the textured yarn. is from 180 to 1200 denier and the individual filaments of the textured yarn are from 10 to 30 denier. The textured yarn may be a polyamide, a polyester, a polyacrylonitrile or a polyolyfin. Alternatively it may be polyethyleneterephthalate, polyethylene, polypropylene, or poly-e-caprolactum. The base fabric may be knitted from yarns in which the filaments .are made of a synthetic linear high polymer which may be any one of those used for producing the yarn for the bouclÚ type surface.
Patent GB-773434-A (GB)
Title: Dialkyl and trialkyl tin derivatives of thiomalic acid and processes for producing such derivatives
IPC: C07F7/22
Filed: 1955-06-02
Abstract: Halogenated vinyl resins with or without plasticisers may be stabilized against deterioration by heat by addition of thiomalates of dialkyl and trialkyl tins of formul  <FORM:0773434/IV(a)/1> where R is any alkyl radical, which radicals in the same molecule may be the same or different.  In Example 4 a composition comprising polyvinyl chloride, a high melting point octadecenamide and dibutyl tin thiomalate is described.ALSO:The invention comprises the thiomalates of dialkyl and trialkyl tin compounds in which the tin atom is bonded to a carboxylic acid group.  They may be prepared by reacting a dialkyl- or trialkyl tin halide (especially chloride) with neutral alkali metal salts of thiomalic acid, or by reacting the alkyl tin hydroxide with thiomalic acid.  The products are of formul <FORM:0773434/IV(b)/1> where R is any alkyl radical which radicals in the same molecule may be the same or different.  The products may be used as heat stabilizers in halogenated vinyl resins, both plasticised and unplasticised (see Group IV (a)).  In an example, di-hydroxy dibutyl tin is reacted with thiomalic acid.  If desired, the reacting materials may be added to the resin mix and caused to react in the pressing operation.
Patent GB-593988-A (GB)
Title: Improvements in or relating to sighting systems for use in the aiming of missiles
IPC: F41G7/00
Filed: 1945-06-21
Abstract: 593,988. Lamps. ROEBUCK, W. June 21, 1945, No. 15902. [Class 75 (iv)] [Also in Group XXI] In a sighting system, particularly for aiming torpedoes, a beam of light is shone on to a cylindrical mirror through which a line of sight to the target is taken, the spot of light on the mirror being movable to vary the aiming angle. To effect this the light source 5 is movable in a tube 4 by a cable 15 whose other end is connected to mechanism (see Group XXI), the tube being mounted substantially in the principle focal plane of the mirror. The tube 4 and lamp carriage 5 have contact strips 14, 13, the strips 14 leading to a terminal block 14a. The tube is slotted to permit passage of the light rays through a lens 11, and rotation of the carriage is prevented by a block 12 engaging in the slot.
Patent GB-418640-A (GB)
Title: Improvements in direction finding by wireless
IPC: G01S1/02
Filed: 1934-05-29
Abstract: 418,640. Directive wireless signalling. MATHESON, G., Upper Gills, Canisbay, Via Wick, Caithness. May 29, 1934, No. 15954. Addition to 380,209. [Class 40 (v).] To compensate for quadrantal error, the direction-finding equipment described in the parent Specification is fitted with a scale b, marked in equal subdivisions, and a scale c in which the subdivisions are unequally spaced in such a way as to indicate directly the "corrected bearing.
Patent GB-1186005-A (GB)
Title: Improvements in Fitments for Loose Leaf Binders
Inventor: BROADHURST CHARLES JOHN
IPC: B42F13/06
Filed: 1967-04-07
Abstract: 1,186,005. Filing papers &c. C. J. BROADHURST. 8 March, 1968 [7 April, 1967], No. 15990/67. Addition to 1,103,353. Heading B6E. The loose-leaf filing device as described in the parent Specification 1,103,353 is modified to vary the capacity of the loose-leaf binder (not shown) by providing a loose-leaf supporting base-plate A, Fig. 2, with a number of longitudinally spaced, transversely aligned pairs of arcuate slots C through respective ones in each pair are passed resilient filing post strips B, Fig. 1, having a permanent partcylindrical configuration extending longitudinally of the strip. The free ends of the strips are passed through the other slot in each pair and the height of the loops thus formed is adjusted to the height of the stack of filed loose-leaves by pulling the free ends of the strips a required amount through the associated slots C. In a further embodiment (Fig. 5) the baseplate A is associated with a box in which are accommodated the free ends of the strips.
Patent GB-185835-A (GB)
Title: Improvements in weighing scales
IPC: G01G23/20
Filed: 1921-06-10
Abstract: 185,835. Marks, E. C. R., (Toledo Scale Co.). June 10, 1921. Computing-apparatus; indicating-mechanism. -Relates to weighing-scales of the type having means to change the weighing-capacity of the scale and consists in printing the chart with a number of differently coloured sets of figures corresponding to the different weighing-capacities of the scale, colour screens controlled by the capacity-changing means being provided to bring into prominence the required set of figures. The invention, although of general application, is shown applied to a scale of the rolling sector type. The capacity-changing means comprise a lever 23, Fig. 1, pivoted at one end on a bracket 24 and suspended at the other end from a sector 20 on the load-balancing pendulum 9 by a flexible ribbon 21. Knife-edged pivots 25 adapted to carry a weight 26, Figs. 1 and 4, extend from the suspended end of the lever. The weight 26 may be raised off the pivots 25 by two bent arms 29 also pivoted on the bracket 24 and actuated by an external crankhandle 27. The chart 15 is printed with two differently coloured sets of figures, one set being superimposed on the other as shown in Fig. 9. The numerical difference between any two corresponding graduations is the same, and equal to the lower capacity of the scale. The sets of figures are selectively rendered legible by coloured screens 41, 42, Fig. 2, carried by an X-shaped frame 40 pivoted on the axis of the - chart and provided with a pinion 39. A rack 37 connected to the arms 29 through a rod 35 and link 34 engages the pinion 39 and moves either the screens 42 or the screens 41 into reading position according as the weight 26 is on or off the lever 23.
Patent GB-329844-A (GB)
Title: Improvements relating to stentering machines
IPC: B65H23/028
Filed: 1929-05-24
Abstract: 329,844. Bentley & Jackson, Ltd., and Simpson, A. E. May 24, 1929. Tentering.-To allow for expansion and contraction of a tentering chain, the chain wheel a is carried by a spring-pressed slide e the spring h being loaded by means of a floating screw b.
Patent GB-1424858-A (GB)
Title: Flow distribution for heat exchangers
IPC: F28F27/02
Filed: 1973-04-04
Abstract: 1424858 Tubular heat exchangers FOSTER WHEELER CORP 4 April 1973 [1 May 1972] 16072/73 Headings F4S and F4A In a shell and tube heat exchanger 10 comprising a bundle of tubes 38 extending between upper and lower tube sheets 22 and 32, shellside fluid, e.g. liquid sodium, entering an annular chamber 54 surrounding the tube bundle through an inlet 46 leaves the upper end of the chamber 54 via a perforated plate 60 of inverted frusto conical shape to flow downwardly over the tubes. The size and number of perforations varies around the plate 60 in dependence of distance from the inlet 46 and is such that the area of the perforations per unit area of the plate 60 is substantially inversely proportional to the distance of the unit area from the inlet inlet 46. An end plate 68 extends across the annular chamber 54 at a location directly opposite the inlet 46. The annular chamber is defined by a cylindrical shroud 50 and a horizontally extending ring 52. The shell-side fluid after passing over the tubes 38 flows outwardly through openings 62 in the shroud 50 into an annular space 56 before finally leaving the shell through a bottom outlet 66. The tube-side fluid enters the lower header chamber 36 through a central conduit 30 and then flows upwardly through the tubes into the upper header chamber 40 before leaving through an outlet 42; support plates 61 are provided for the tubes 38.
Patent GB-258025-A (GB)
Title: Improvements in and relating to telephone systems
IPC: H04M3/12
Filed: 1925-06-22
Abstract: 258,025. Marks, E. C. R., (American Telechronometer Co.). June 22, 1925. Manual and automatic exchange systems.- A timing-device is set in operation by the reply of the called subscriber and, after a predetermined interval, opens the connection and sends a tone signal to the calling subscriber, who 'may, by moving his switchhook , re-close the connection and re-start the timing-device. Each depression of the switchhook by the calling subscriber during or at the end of the connection causes operation of his meter. The invention is described with reference to a manual exchange system in which contacts 42, 43 controlled by the subscriber's switch hook normally short-circuit his microphone 6 and the setting-winding 27 of the meter magnet. When the called subscriber replies, supervisory relay 64<1> connects up reversing relay 66 which causes start relay 101 to energize, starting the driving motor 103 and removing a locking detent 99 from the time-disc 92, clutch magnet 107 having been previously energized by supervisory relay 64. After an interval, a cam 94 on the disc 92 closes contacts 95, 96 to energize interrupting relay 82, which opens the connection and applies tone to the calling line. To prolong the conversation, the calling subscriber momentarily depresses his switchhook, releasing relay 64 and clutch maget 107, so that the disc 92 is returned to normal by a spring 98, and interrupting relay 82 is released. Raising of the switchhook thus re-starts the timing-device. When reversing-relay 66 energizes, the reversal of current causes the windings of bell 7 to open the short-circuiting contacts 22, 23, so that the setting winding 27 of the meter maget is effective, closing contacts 24, 25 and 35, 36. When the switchhook is subsequently depressed, the operating winding 28 is closed over contacts 16, 17 and the meter is actuated. Winding 27 re-operates when the switchhook is raised. The invention may be applied to measuring the service over a trunk line to a private branch exchange. In an automatic exchange system, means may be provided to prevent release of the automatic switches for an interval after the energization of interrupting relay 82 in order that the call may be prolonged if desired.
Patent GB-729383-A (GB)
Title: Improvements in or relating to the method of operating a reciprocating internal combustion engine
IPC: F02B3/02
Filed: 1953-06-11
Abstract: 729,383. Supplying fuel by direct injection ; cycles. TEXACO DEVELOPMENT CORPORATION. June 11, 1953 [June 23, 1952], No. 16106/53. Classes 7(2) and 7(3). The invention relates to a method of operating an engine, and to the construction thereof, the engine having an inlet valve 35 which is provided with a semi-circular shroud 35A so that the incoming air is swirled about the cylinder axis, the swirl rate having a substantially constant ratio, such as 6 : 1, to the engine speed. During the compression stroke a small boss 47 on an engine driven cam. 45 operates a fuel valve 42 and causes a pilot fuel injection through a nozzle 40 ; the fuel is entrained in the swirling air and forms a pilot patch which continues to swirl around the cylinder as the piston continues to rise, the cetane number of the fuel being chosen so that the patch ignites by compression as it completes one or more swirls. At this instant the main boss 48 on cam 45 operates the valve 42 so that the first increment of the main fuel injection is ignited by the pilot patch and establishes a flame front which tends to burn towards the injector and consumes the additional combustible mixture that is formed as the main fuel injection continues for a time slightly less than one air swirl. The pilot injection which may be made from a different position to the main jet and has an adjustable duration may commence at any time during the compression stroke ; the main injection may begin at either side of T.D.C. depending on engine load, and it is preferable to throttle the main fuel rather than the air. In a modification, the pilot and main injections are effected through separate nozzles, the main nozzle being above the pilot nozzle and parallel thereto, each nozzle being supplied from a separate fuel system comprising a tank, high-pressure pump an accumulator tank and a check valve ; the pilot fuel may be different from the main fuel and have a high cetane number. After the engine has started the pilot fuel system is shut off and the main fuel is ignited by a glow plug which has been raised to ignition temperature by engine operation. The main fuel may be any combustible fluid such as natural gas, gasoline, kerosene, diesel fuel or heavier hydrocarbons. The engine may operate on a two or four stroke Otto cycle. Specification 596,846 is referred to.
Patent GB-529469-A (GB)
Title: Improvements in or relating to windscreen wipers for rail or road vehicles
IPC: B60S1/06
Filed: 1939-06-01
Abstract: 529,469. Windscreen cleaners. PETERS & CO., Ltd., G. D., and CARDWELL, C. H. June 1, 1939, No. 16142. [Class 138 (i)] [Also in Group XXVI] A compressed-air motor for operating a windscreen-wiper has manual control means adapted to ensure that the wiper-blade is always stopped in the same position and at a particular end of the stroke regardless of its position when the control means is operated. The shaft 9, Fig. 1, of the wiper 10 is operated by a quadrant 8 and a rack 7 formed on a rod 6, which connects two pistons 4, 5 working in single-acting cylinders 1, 2, compressed air is admitted to the cylinders alternately by an oscillating disc-valve 12, Fig. 9, having a recess 37 and a port 39 for admitting air to the cylinders alternately, and recesses 36, 38 for connecting them to exhaust. The valve is operated by a shaft 41, Fig. 4, carrying an arm 13, which forms one member of a toggle, the other member of which is formed by a spring telescoping rod 15. The arm 13 is engaged alternately but studs 47, 48 on the piston-rod, to carry the toggle past the dead-point, and its stroke is completed, so as to reverse the valve 12, by the spring rod 15. The shaft 41 has on its end a transverse rib, which engages a slot 43 in the valve so shaped as to permit considerable movement of the shaft before the valve is operated. The wiper can be stopped by a spring plunger 52, which moves into the path of the toggle-arm 13 when turned by means of a knob. The plunger is so located as to intercept the arm 13 when the wiper is at the left-hand end of its stroke, and just before the arm acts on the valve to reverse the stroke of the motor. If the arm 13 is in its extreme left-hand position when the plunger is operated, the plunger descends on to it. The arm 13 then makes another stroke and is intercepted on its return. To restart the wiper, the plunger is withdrawn, and the arm 13 then completes its stroke and shifts the valve.
Patent GB-365950-A (GB)
Title: Improvements in or relating to closures for bottles, jars and the like containers
IPC: B65D41/04
Filed: 1931-06-04
Abstract: 365,950. Caps for bottles. ARMSTRONG, J. J. V., 12, Church Street, Liverpool.-(Phoenix-Hermetic Co. ; 2444, West 16th Street, Chicago, U.S.A.) June 4, 1931, No. 16183. [Class 125 (iii).] A cap for bottles &c. comprises an outer metal cover 4 having a depending flange 5, an inner non-metallic sleeve 6 having a thread on the inner face thereof, and a non-metallic packing disc 8. The sleeve 6 is secured by bending the lower edge 9 of the flange 5. The sleeve 6 is cut from a tube of internally threaded non-metallic material.
Patent GB-754589-A (GB)
Title: Combustion or roasting furnace, especially for roasting sulphur ore
IPC: C22B1/10
Filed: 1954-06-01
Abstract: 754,589. Fluidized bed furnaces REYMERSHOLMS GAMLA INDUSTRI AKTIEBOLAG. June 1, 1954 [June 4, 1953], No. 16198/54. Classes 51(1) and 51(2). A fluidised bed furnace 2 intended particularly for ore-roasting or similar processes but applicable also to the combustion of fuel comprises a central cylindrical shaft 1 and an outer annular shaft 20, the shaft 20 being provided with charging and discharging pipes 9, 10 respectively and with a perforated chargesupport 4 through which combustion air delivered by fans 11, 12 through valve-controlled pipes 22 is supplied, the shaft 1 and furnace 2 being connected at their upper ends by tangentially-arranged openings 3. The shaft 1 acts as a cyclone separator for particles entrained in the combustion gases and is provided with a gas outlet 8, the solid particles being removed at the bottom of the shaft. Cooling elements 7 are provided in the lower parts of the walls of the shafts 1, 20.
Patent GB-112960-A (GB)
Title: New or Improved Means for Supplying Ozonized Air and Liquids for Inhalation.
Inventor: RAY JOHN FLETCHER
IPC: A61M15/02
Filed: 1917-01-30
Abstract: 112,960. Ray, J. F., and Littler, G. W. Jan. 30, 1917. Frictional and influence machines.-An apparatus for ozonizing air comprises a static generator A driven from a hand-wheel d by bevel gearing f and comprising horizontal plates a, brushes b in contact with the plates, and collecting brushes c connected through conductors g to an adjustable spark gap in a chamber B having a glazed inspection aperture b<1>.