baber/WOPTO huggingface dataset:
Patent GB-934670-A (GB)
Title: Salinity indicating system with automatic temperature compensation including alarm
IPC: G01N27/04
Filed: 1959-09-11
Abstract: 934,670. Detecting impurities in fluids. McNAB Inc. Sept. 11, 1959 [Sept. 30, 1958], No. 31117/59. Class 37. Apparatus for measuring the conductivity of a liquid to determine its saline content and for operating an alarm when the salinity exceeds a specified value comprises a first circuit consisting of a conductivity cell 13, 15 in series with a resistor R2, a second circuit consisting of a temperaturesensitive resistor R3 in series with a resistor R4 and a potential-dividing network R6, R7 connected in parallel with the resistor R3, an alarm circuit including a relay R connected between the junction Z of resistors R6, R7 and the end Y of resistor R4 remote from R3 and a meter M to which the first, second and alarm circuits are connected. The apparatus is energized from -the secondary of a transformer TR having a ballast resistor VR in series in its primary circuit to maintain a constant-voltage output. The meter M operates to measure the ratio between the currents flowing in windings 67, 67A and thus the ratio between the currents flowing in the first and second circuits, the relay circuit being of such a high resistance that the current flowing through it may be ignored. The second circuit comprising the thermistor is proportioned so that the current flowing through it varies in the same way with temperature as that through the cell 13, 15; hence the meter reading is indicative of saline content only. The circuit is also proportioned so that the voltage between points Z and Y does not vary with temperature despite the change in current flowing through cell 13, 15 and the consequent change in voltage drop across resistor R5. Thus with increase in salinity the voltage drop across R5 increases that between points Z and Y decreases until eventually it is insufficient to hold relay R energized whereupon the circuit of the alarm bell BL is closed and the alarm is sounded. The value of voltage between Z and Y at which the alarm operates and hence the critical value of salinity are determined by the setting of resistor R8. Push-button switch 5 is used to restore the alarm to its non-operative condition once the saline content has been reduced below the alarm level, despite the existance of a differential between the operating and releasing voltages for the relay. Fig. 2 (not shown) illustrates the circuit modified to enable a large number of cells to be supervised. A visual alarm is associated with each cell, there being a common audible alarm and switching means is provided to permit the meter to be connected into the circuit associated with any one of the cells, while substituting appropriate resistances for the meter in the remaining circuits. The operation of the meter circuit may also be tested by switching in a resistance network in place of a cell to represent a predetermined value of salinity.
Patent GB-1147076-A (GB)
Title: Improvements relating to gas turbine installations
IPC: F02D25/02
Filed: 1966-07-11
Abstract: 1,147,076. Speed governors; fluid-pressure servomotor systems. M.A.N. TURBO G.m.b.H. July 11, 1966 [July 13, 1965], No.31117/66. Headings G3B and G3P. [Also in Division F1] The fuel supply to two or more gas turbine or other internal-combustion engines 1, 2 driving a common shaft 8 through freewheel or centrifugal clutches and gearing 6 and each of which has its own proportional controller 7 for speed adjustment is regulated through a servomechanism 15 as a function of the speed of the shaft 8 and the difference in the load on the two engines. This difference is communicated by torque responsive devices 10 to the servomechanism in which a piston and cylinder 19, 20 alters the length of a coupling rod 21 between a pair of levers 18 connected by rods or cables 23 to the controllers 7. Simultaneous adjustment of the levers 18 is effected by a second piston and cylinder 16, 16' under the control of a speed responsive device 9. Air is supplied to the latter and to the devices 10 through non-return valves 11, a filter 12, a drier 13 and a pressure regulator 14 from the compressors 3 of the engines.
Patent GB-451271-A (GB)
Title: A process of recovering and/or purifying aluminium and aluminium alloys
IPC: C22B21/00
Filed: 1934-10-30
Abstract: Waste or scrap aluminium or aluminium alloys are recovered or purified by melting with a flux consisting of magnesium chloride and a heavy metal salt such as antimony fluoride, antimony sulphide, cadmium chloride, copper chloride, or zinc chloride, with or without a small amount of magnesium fluoride.  The salt mixture may first be fused and solidified, and used in powdered form.  The treatment of an aluminium alloy containing 10 per cent of zinc and 2 per cent of copper is referred to.
Patent GB-505595-A (GB)
Title: Improvements in feedwater heaters, economisers and like tubulous heat-exchangers
IPC: F22D1/10
Filed: 1937-11-15
Abstract: 505,595. Straight - tube heat - exchangers. RYLANDS, J. R. Nov. 15, 1937, No. 31306. Drawings to Specification. [Class 64 (iii)] In an economizer or like heater consisting of a bank of spaced corrugated, ribbed or spiked tubes, the ratio of the length of a gas passage between vertical rows of tubes to the hydraulic mean depth of the passages is less than 90. Specification 444,195 is referred to.
Patent GB-1274368-A (GB)
Title: Process for the manufacture of agents for rendering water-repellent the surfaces of solid materials
Inventor: DAVIS FRANCIS CECIL
IPC: C03C17/30
Filed: 1970-06-29
Abstract: 1,274,368. Coated products. STAUFFERWACKER SILICONE CORP. 29 June, 1970. No. 31321/70. Heading B2E. [Also in Divisions C3 and D1] Surfaces, e.g. of glass or masonry, are waterproofed by coating with a water-repellent agent obtained by partial hydrolysis of the reaction product from an organoalkoxysilane and a zirconium or lead salt of an organic acid. The silane preferably contains 0.9-3 'organo groups' per Si atom, and more preferably is obtained by alcoholysis of a mixture of tri- and di-halosilanes, in at least 2:1 molar ratio, with a C1-4 primary or secondary alcohol in an aromatic solvent at 0-50‹C. Suitable salts are those of C1-28 mono- and di-carboxylic acids, used in amounts of 0.25-4.5wt% of the silane (calculated as the corresponding chlorosilane), the silane/salt mixture being refluxed, e.g. in the solvent from the silane preparation. Water is added to obtain 50-80% hydrolysis e.g. by reflux in the same solvent as previously. The product may be applied as a 4-20wt% solution in an organic solvent of b.p. below 200‹C to the surfaces of solids to be made waterrepellent. In Examples methanol is refluxed with MeSiCl 3 , Me 2 SiCl 2  and n-PrSiCl 3  in 3:1:1 molar ratio in xylene; after neutralizing the solution with NaOMe, Zr(OAc) 4  or Pb(OAc) 2  is added and the mixture refluxed, then H 2 O is added and the mixture again refluxed. The product is diluted with ligroin to 5% resin content and applied to a glass plate or concrete cubes.
Patent GB-456697-A (GB)
Title: Improvements in or relating to locks and the like
IPC: E05B65/462
Filed: 1935-11-13
Abstract: 456,697. Fastenings. FAIRBROTHER, H., 30, Ludgate Hill, London.-(Simplex Locks, Ltd. ; 142, Fetherston Street, Welling- ton, New Zealand) Nov. 13, 1935, No. 31439. [Class 44] A fastening for drawers &c., comprises a cylinder I having an opening at one end through which passes one end 5 of a bolt 8, the other end of which passes through a closure plate 6 of the cylinder. The bolt is retracted by a spring 11 engaging a collar 10 on the bolt, and is forced into locking position by external means, such as a press button 21 engaging a plate 19 carrying a number of the bolts. The plate may be held in the locking position by a lock bolt 24. In other forms, the bolts are actuated (1) by cam-shaped striker plates, (2) by wedges on a movable rod, (3) by a lever rocked by a moving striker plate.
Patent GB-428195-A (GB)
Title: Improvements in and relating to rat and mouse traps
IPC: A01M23/08
Filed: 1934-11-03
Abstract: 428,195. Animal traps. PRESTON, T. E., 45, Gordon Road, Fleetwood, Lancashire. Nov. 3, 1934, No. 31603. [Class 5 (i)] A rat or mouse trap comprises two closed compartments one above the other and made substantially of wire, a sloping approach 7 from the outside to the floor 9 of the top compartment where the approach narrows to an opening 8 into the compartment, a mirror 10 and bait platform 12 facing the opening, and a trap door 11 in front of the platform 12 adapted to tilt under the weight of an animal applied at its back end. The door 11 has downwardly curved wires 14 on its under side at the front edge to prevent the escape of an animal as another enters. A door 13 is provided in the lower compartment and a similar door may be provided in the upper : also one or more mirrors may be provided in the lower compartment. The sides, bottom, and back of the lower compartment are preferably covered by wood or the like. Reference has been directed by the Comptroller to Specification 226,736, [Class 5 (i)].
Patent GB-1331376-A (GB)
Title: Herbicidal composition
IPC: A01N37/22
Filed: 1971-07-06
Abstract: 1331376 Herbicidal compositions FARBWERKE HOECHST AG 6 July 1971 [10 July 1970] 31618/71 Heading A5E A herbicidal composition comprises a mixture of an acetanilide of formula: in which X represents chlorine or bromine, R 1  represents an alkyl group having from 1 to 3 carbon atoms or an alkoxy-methyl group having from 1 to 4 carbon atoms in the alkyl group, R 2  represents a hydrogen atom or an alkyl group having 1 or 2 carbon atoms, and R 3  represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms, and a phenyl urea of formula: in which R 4  represents a hydrogen atom or an alkyl or alkoxy group having 1 or 2 carbon atoms, R 5  represents a halogenoalkyl or halogenoalkoxy group having from 1 to 3 carbon atoms (the halogen being fluorine, chlorine or bromine), or a hydrogen atom, CH 3 , CF 3  or Cl, and R 6  represents a hydrogen atom or a methoxy, ethoxy, or vinyloxy group which may be substituted by fluorine or chlorine atoms.
Patent GB-334761-A (GB)
Title: Improvements in processes of reducing the quantity of sulphurous acid gas set free from copper glance on its roasting
Filed: 1929-10-18
Abstract: 334,761. Miyake, M. Oct. 18, 1929. Roasting.-With a view to reducing the amount of sulphur dioxide evolved when roasting copper glance, the ore is roasted in admixture with bone ash and red earth.
Patent GB-272969-A (GB)
Title: Improvements in or relating to oil engine power plants
IPC: B63H23/00
Filed: 1925-12-15
Abstract: 272,969. Baeur, G. Dec. 15, 1925. Driving arrangements for screw propellers.-A propeller shaft 9 is driven by two or more reversible internal-combustion engines 1, 2 or engine sets through gearing 5, 6, 7 and liquid clutches 3, 4. To reverse the direction of rotation of the shaft 9 the clutches are opened, the engines stopped, reversed and run up to speed, after which the clutches are closed again. Specifications 213,156 and 258,827, [Class 110 (iii), Turbines &c.], are referred to.
Patent GB-1529640-A (GB)
Title: Tow rope winch including a brake
IPC: B64D3/02
Filed: 1976-07-30
Abstract: 1529640 Centrifugal brakes for winches DORNIER GmbH 30 July 1976 [15 Oct 1975] 31843/76 Heading F2E  Centrifugal weight 50<SP>1</SP> acts through a spring 41 on a second weight 50 bearing brake shoes 20 to maintain the unwinding speed of drum 10 substantially constant and when winding is almost complete, a cam surface 45<SP>1</SP> (Fig. 3) of a member 40 is moved into supporting engagement with weight 50<SP>1</SP> to allow the force of spring 41 acting on the shoes to bring the drum to rest. Member 40 is integral with the drum and is brought into operation when removal of sufficient cable 4 allows a pin 35 to release the drum for limited rotation relative to the weight carrier 18.
Patent GB-1066573-A (GB)
Title: Machine milking plant
Inventor: BAUM ENGELBERT
IPC: A01J5/007
Filed: 1964-08-05
Abstract: 1,066,573. Milking installations. ALFA-LAVAL A.B. Aug. 5, 1964, No. 31896/64. Heading A1M. A machine milking plant comprises a vacuum line 1 maintained at a substantially constant pre-set first reduced pressure providing the milking vacuum, and a milk collecting pipe 11 subjected to a second further-reduced pressure and receiving milk from the teat cups 6 via a container 8 constituting or connected to a milk claw, the milk tubes 7 of the teat cups being connected to the vacuum line through the intermediary of the container. As shown the milking vacuum in line 1 is produced by a vacuum supply pipe 2 through an equalizing valve 3 and the deeper vacuum in the milk pipe 11 is generated by a pump 9. In a modification a single pump is used to produce the two vacuums valves being provided to ensure that the vacuum in pipe 11 is deeper than that in line 1. A pulsator 5 provides the pulsating vacuum and may be located on the container 8. The container 8 may be provided with a float valve whereby milk is discharged in dependence on the milk level in the container.
Patent GB-1474407-A (GB)
Title: Centralised warning apparatus for vehicles
IPC: G08B25/00
Filed: 1974-07-18
Abstract: 1474407 Selective signalling NIPPONDENSO CO Ltd and TOYOTA JIDOSHA KOGYO KK 18 July 1974 [28 July 1973] 31900/74 Heading G4H In centralized warning apparatus for a vehicle, a plurality of sensors for detecting conditions (e.g. engine oil level) at check points of the vehicle control respective indicators to indicate faults and, if any of the indicators is actuated, actuate a master warning device for a fixed time. The master device is an indicator to which pulses are fed from a pulse generator for a time determined by a timer, when the master device is to be actuated. Different sensors may use different timers, or connections from further sensors may by-pass the timer. Actuation of the vehicle (automobile) key switch causes the circuitry and indicators to be actuated to test them, this test actuation ending when the engine reaches idling speed, under control of the 3- phase A.C. generator, a timer, a vehicle running detector or an oil pressure meter.
Patent GB-324716-A (GB)
Title: Improvements in or relating to display devices for advertisements and like purposes
IPC: G09F7/00
Filed: 1928-11-02
Abstract: 324,716. Gee, G. Nov. 2, 1928. Cylinders, rotatting.-A display device for advertising and like purposes comprises a rotary cylinder provided with helical lines or bands &c. 6. The cylinder is enclosed in a sleeve-like fixed casing 3 having a longitudinal slot 5 through which part of the cylinder is directly seen, giving the effect of straight-line motion. The cylinder may be internally illuminated.
Patent GB-1362024-A (GB)
Title: Process for preparing a spun stra'd a spun strand and a network of staple fibres produced thereby
IPC: D01D5/42
Filed: 1971-07-07
Abstract: 1362024 Fibrillated structures HERCULES INC 7 July 1971 [10 July 1970] 31997/71 Headings D1F DIR and D1W A net comprises parallel, longitudinallyoriented relatively thick thermoplastic fibres extending diagonally and continuously across the net, the fibres having a constant length, thickness and cross-section and being interconnected by relatively thin fibrils having their ends connected to adjacent fibres. The fibres may be from 2 to 30 inches long, and may extend at an angle of at least 45 to the nets' transverse axis. The net may be twisted to form a span strand in such a manner that at least some of the fibre ends protrude from the strand. The strand may have 1 to 10 twists per inch. A plurality of strands may be plied. The net is formed by passing extruded sheet 9 between grooved embossing rolls and backup roll 7 to produce diagonal sheet ribs joined by their webs. The sheet is then stretched from two to eight times between draw rolls 11, 13, while allowing the sheet to neck down, is slit, and the webs are partially fibrillated in pneumatic fibrillations 21. Sheet 9 may alternatively be formed by an annular extrusion die having notched lips, the die either revolving and the resulting tube being cut longitudinally, or the die being stationary and the tube being cut on a helical path. The net is formed to strand by pneumatic twisters 23. The net webs may be completely fibrillated, the resulting structure being stabilized prior to twisting, e.g. by applying an adhesive which is removed after twisting. Polymers such as polyolefins, polyamides, polyesters and acrylics may be used.
Patent GB-902081-A (GB)
Title: Method of removing hydrogen sulphide from gaseous mixtures by means of arsenical solutions
IPC: C10K1/12
Filed: 1958-10-07
Abstract: In a modification of the process of Specification 833,451 [Group III] wherein hydrogen sulphide is removed from gases by scrubbing with an alkaline solution containing an arsenite, an arsenate and a monothioarsenate and wherein used scrubbing liquid is regenerated by a "digestion" reaction the partially regenerated solution is in the last stage of the regeneration oxidized with oxygen or an oxygen-containing gas at a temperature of at least 50 DEG  C. to convert arsenite to arsenate, the pH of the solution being oxidized being at least 8 and preferably between 9 and 11.  The oxidation may be carried out at super-atmospheric pressure and in the presence of a catalyst such as a polyvalent oxygen-carrying phenol, e.g. hydroquinone, pyrocatechin, pyrogallol, oxyhydroquinone, hydroquinone-sulphonic acid, chlorohydroquinone, bromohydroquinone, parabenzoquinone or orleobenzoquinone.
Patent GB-682165-A (GB)
Title: Improvements in or relating to electric accumulators
IPC: H01M50/489
Filed: 1948-12-10
Abstract: 682,165. Batteries. YARDNEY INTERNATIONAL CORPORATION. Dec. 10, 1948 [July 28, 1948], No. 32076/48. Class 53. A zinc-silver accumulator of the kind described and claimed in Specification 680,793 is provided initially with the negative active material in a finely-divided form. The positive active material may also be in a finely-divided form and may consist of silver or silver peroxide, the negative material consisting of zinc oxide or metallic zinc. The active materials may be carried on grids enclosed in envelopes 7, 8, of regenerated cellulose and provided with terminal wires 1, 2, as shown in Fig. 1B, one envelope being laid on the other and the two folded into U-shape. Specification 682,164 also is referred to.
Patent GB-452960-A (GB)
Title: Improvements in or relating to magnetron circuit arrangements
IPC: H03C5/04
Filed: 1935-11-20
Abstract: 452,960. Valve modulating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Nov. 20, 1935, No. 32211. Convention date, Nov. 30, 1934. [Class 40 (v)] In a split-anode magnetron, signal voltage is applied simultaneously to modulate (a) the anode voltage and (b) the anodecathode emission, the two modulations being applied in phase-opposition. The object is to increase the modulated power output without either overheating the anode, or, on the other hand, stopping the carrier-oscillations. As shown in Fig. 4, one secondary winding of the microphone transformer T is used to modulate the voltage applied from a high-tension source Ua to the split anodes Al ... A4. The other secondary winding is applied across the cathode K and a negatively-biassed electrode H set inside the cathode, so as to control the electron emission. The back-coupling through the transformer T may be utilized to produce intermediate-frequency oscillations, which may serve either as a self-modulating note frequency or as a " quenching " frequency for producing a super-regenerative effect. Specification 452,355 is referred to.
Patent GB-1512047-A (GB)
Title: Pistons
IPC: F02F3/28
Filed: 1975-08-01
Abstract: 1512047 Pistons MAHLE GmbH 1 Aug 1975 [16 Aug 1974] 32230/75 Heading F2T Movement of the connecting rod relative to the skirt 3 of a piston produces relative rotation of the head 1 and skirt 3. The skirt is in halves along its longitudinal axis to allow assembly of a circular flange 5 on the head in a circular recess formed by a hook section 4 on the skirt. The head is rotated relative to the skirt by levers 7, pivotted on plates 11 bolted to the skirt, engaging pins 14 on the gudgeon pin 13 and having panels 8 engaging ratchet teeth 9 formed in the piston head. Thrust on the head is transmitted to the skirt by flange 5 and by face 20 engaging flange 30 on the skirt.
Patent GB-479745-A (GB)
Title: Improvements in and relating to resistance controllers for electric motors
IPC: B60L15/00
Filed: 1936-11-17
Abstract: 479,745. Controllers. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 17, 1936, No. 32235/37. Convention date, Nov. 18, 1935. Divided out of 479,384. [Class 38 (iii)] Combinations of resistances.-For controlling the running and braking operations of electric motors, a regulating resistance - R is connected in parallel with sections I, II of a main resistance in succession, to shortcircuit these sections gradually in turn, and at the first step of control the resistance R is connected in parallel with the first resistance section I to be gradually short-circuited, so that the resistance R may be made smaller in value than would be necessary if it were connected across the resistance section I only at the second step. After the section I has been gradually short-circuited, a switch a is closed across this resistance and a switch b moved to the right to connect the resistance R across the next section II of resistance.
Patent GB-945188-A (GB)
Title: Front gripper drive in a sheet-printing machine
IPC: B41F21/05
Filed: 1961-09-08
Abstract: 945,188. Feeding sheets. MASCHINENFABRIK AUGSBURG-NURNBERG A.G. Sept. 8, 1961 [Sept. 9, 1960], No. 32401/61. Heading B6B.  In a cylinder printing machine in which the sheets are transferred from a feed table to grippers on the cylinder or on a transfer drum by oscillated grippers carried on shaft 7, the shaft 7 is turned in the feed and return directions by pull rods 5, 8, respectively, actuated through roller levers 3, 4 by cams 1, 2 located on the same side of the machine. A spring 9 between rod 8 and shaft 7 so influences the linkage as to maintain the rollers in contact with their cams and to take up play. An adjustable return stop 13 is provided.
Patent GB-1287446-A (GB)
Title: Improvements in or relating to screw-threaded fastener assemblies
Inventor: BROWNE HAROLD DOUGLAS
IPC: F16B37/04
Filed: 1969-06-27
Abstract: 1287446 Nuts FIRTH CLEVELAND FASTENINGS Ltd 21 Sept 1970 [27 June 1969] 32496/69 Heading F2H A nut 10 having a step 13 on one face thereof is provided with an adhesive material 14 on the land of the step. The nut may be formed of two square or rectangular body sections 11 and 12, the former being of smaller dimensions and the step may be formed on all four sides (Fig. 5, not shown). The adhesive layer which may be protected by a non-adhesive backing strip may be of methyl-cyanoacrylate and may be used to hold a plurality of nuts together in a row. Grooves or corrugations (Figs. 7-9, not shown) may be provided on the lands to enhance the sticking of the adhesive.