baber/WOPTO huggingface dataset:
Patent GB-1036207-A (GB)
Title: A method for the manufacture of alkali metal orthophosphates
IPC: C01B25/46
Filed: 1963-07-09
Abstract: Alkali metal orthophosphates are made by reacting orthophosphoric acid with potassium chloride and/or sodium chloride in the presence of at least one amine selected from primary, secondary and tertiary amines, the amine or amines containing from 1 to 5 carbon atoms in each of its or their substituent alkyl groups. The amine may be unsubstituted or it may be an alkanolamine; it is preferably added to a mixture of the acid and the sodium and/or potassium chloride.  An alcohol, ether or ketone may be added to the reaction mixture. The orthophosphate product is filtered off and the mother liquor treated with alkali to recover the amine.
Patent GB-1014925-A (GB)
Title: Improvements in or relating to electrical storage batteries
IPC: H01M50/569
Filed: 1963-07-09
Abstract: 1,014,925. Counters. FRAKO KONDENSATOREN - UND APPARATEBAU G.m.b.H. July 9, 1963 [July 11, 1962], No. 27189/63. Heading G4D. [Also in Division H2] The number of times a battery is charged and discharged is counted and the state of charge is indicated. As the effective capacity of a battery reduces with the number of times it has been discharged the indication of the state of charge is appropriately adjusted either manually or automatically. The measuring and indicating apparatus may be secured to the battery holder. The number of ampere-hours which have passed through the battery may also be totalled.
Patent GB-209475-A (GB)
Title: Improvements in and relating to evaporators
IPC: B01D1/02
Filed: 1922-10-09
Abstract: 209,475. Fothergill, H. Oct. 9, 1922. Junction pieces.-In steam-heated evaporators wherein steam is passed through coils 20, 21 connecting a steam-inlet pipe 40 and a drainage pipe 50, the coils are connected in pairs at their ends to T-pieces 60, which are held against the pipes 40, 50 by bolts 70 passing through the pipes and through second T-pieces which connect a second pair of coils to the pipes.
Patent GB-242633-A (GB)
IPC: G01F1/36
Filed: 1925-10-30
Abstract: 242,633. British Thomson-Houston Co., Ltd., (Assignees of Bullock, C. F.). Nov. 8, 1924, [Convention date]. Flow meters, pressure-actuated.-In fluid-flow meters utilising a pressure-difference, the pressure difference is created by two or more devices 6, 7 spaced apart at a distance. of approximately five pipe, diameters. The devices 6, 7 may be simple apertured diaphragms.
Patent GB-297683-A (GB)
IPC: F16D69/02
Filed: 1928-09-24
Abstract: 297,683. Frings, C., Maltitz, L. E. von, and Braun, E., (trading as Holz-. industrie K³mmel & Co.). Sept. 22, 1927, [Convention date]. Blocks and shoes.-A brake shoe comprises a number of strips or veneers of wood secured together as shown in Fig. 3 and having their fibres running alternately radially and tangentially to the wheel rim. The strips are metallized by impregnating so as to be fireproof.
Patent GB-638319-A (GB)
Title: Improvements in or relating to electric control arrangements employing saturable reactors
IPC: G05B11/01
Filed: 1947-10-14
Abstract: 638,319. Inductive control of current. ELECTRO METHODS, Ltd., and BUTCHER, F. E. Oct. 14, 1947, No. 27479. [Class 38 (iv)] [Also in Group XXXIX] To improve the speed of response in the load circuit of a saturable reactor to changes of current strength in the D.C. control winding, a feedback winding (or windings) which has little or no effect on the core saturation under steady conditions of load current is arranged, during change of load current, to augment the action of the control current which has initiated the change. As shown in Fig. 1, reactors 1, 2 having A.C. windings 11, 21, D.C. control windings 14, 24 and self-magnetizing windings 12, 22 in series with a D.C. load 5, are provided with feedback windings 13, 23 connected across the load through a condenser 7 which, whilst normally preventing energization of these windings, allows positive feedback to occur whenever the load voltage is changing. If the load is in the A.C. circuit of the reactor the feedback windings may be energized through a condenser from the D.C. terminals of a rectifier bridge shunting the load. The feedback and self-magnetizing windings may be combined, for instance as shown in Fig. 3, wherein a feedback voltage is injected into the circuit of the self-magnetizing windings 13, 23 by a resistor 8 supplied through condensers 7, 71 from the D.C. side of a rectifier bridge 41 shunting the load 51 which is in the A.C. circuit of the reactor. In another arrangement the feedback circuit comprises two equal and oppositelyacting windings, one of which is in series with a choke, fed in parallel with D.C. from the selfmagnetizing circuit which also contains the load. Under steady conditions the M.M.F.'s of the two feedback windings balance each other, but under conditions of changing load current the choke introduces unbalance and allows feedback to occur. Fig. 5 shows a back-to-back arrangement of two reactors controlling a D.C. load 5, positive feedback when the load current varies being provided by windings 13, 23, 13<1> and 23<1> fed over condenser 7 from the load. To avoid hunting, particularly when the arrangement is used in connection with a closed-loop servo system, negative feedback, which is effective over only a narrow range of load current intensity, is provided by further windings 15, 25, 15<1> and 25<1> fed over a condenser 36 and a current limiter 33. The last may be a non-linear resistor, or a device such as an electric discharge valve controlled by a current-responsive device 34, such as a mechanical or thermionic relay, actuated by load current. In the case of a system employ-. ing a number of stages of cascaded reactors, the feedback winding of any stage may be energized from the output circuit of the same, or a subsequent stage.
Patent GB-1480224-A (GB)
Title: Line switching arrangements for telephone intercommunication systems
IPC: H04M9/00
Filed: 1974-06-20
Abstract: 1480224 Automatic exchange systems GTE INTERNATIONAL Inc 20 June 1974 27505/74 Heading H4K A relay contact tree for use in a key telephone system of the type described in Specification 1,480,223 utilizes a plurality of relays each of which has the same number of contact sets that are all used in the formation of the tree. As shown relays AT, BT, CT are operated selectively by actuation of keys T1-T7 so as to prepare routes, through the switching tree for connecting the extensions tip, ring and signal wires to the required line. The connection is completed by the operation of LT which follows any of AT, BT, CT. The properties of the tree are that each of the three relays contributes 5 contacts, that each branch contains at least one contact from each of the relays but the number of contacts of a particular relay differs from branch to branch, that two branches are symmetrical CT1, AT1, AT2, BT1, BT2 and CT2, AT3, AT4, BT3, BT4, and that the number of outlets of each tree to which the contacts of a particular relay give access is the same i.e. B's contacts give access to 4 outlets whereas A and C's give access to 6 outlets.
Patent GB-1013292-A (GB)
Title: Forming and solid-phase bonding
IPC: B21D53/04
Filed: 1961-10-19
Abstract: Clad wire is formed by rolling clean powdered metal or metal alloy from a hopper 6 on to a core 13 by means of grooved rolls, the compacted powder forming a bond with the core which can be improved by a subsequent sintering step.  A number of rolls may be positioned side by side, rounded ribs 3 on the rolls co-operating to form thin breakable webs between adjacent wires. The hopper 6 includes a central guide tube 7 supported by spokes 8.  The core to be rolled may be smaller, the same size, or even greater in size than the pass between the rolls, and the pass itself can be of circular or elliptical form.  The powder metal may be Fe, Mo or Cu. 1,013,292 <PICT:1013292/C6-C7/1> <PICT:1013292/C6-C7/2>
Patent GB-1425248-A (GB)
Title: Method for the manufacture of dry charged multi-cell storage batteries
IPC: H01M10/12
Filed: 1973-06-11
Abstract: 1425248 Dry-charged storage batteries VARTA BATTERIE AG 11 June 1973 [13 June 1972] 27639/73 Heading H1B A method of making dry-charged lead-acid batteries comprises the steps of: completely assembling the battery apart from the filling plugs and forming the plates within the battery container, washing the plates, removing the wash water e.g. by placing the battery in a vacuum chamber and inverting it to remove the wash water under atmospheric pressure, reducing the pressure in the vacuum chamber to 30-120 Torr to remove residual moisture, impregnating the plates with an impregnating solution, e.g. boric acid, inverting the battery to remove the impregnating solution under atmospheric pressure and then reducing pressure in chamber to 30-120 Torr to remove residual solution. Final traces of moisture may be removed by vaporizing a solvent at 60-90‹C e.g. octane, decane, pentanol, butanol or nonane, in the chamber whilst the chamber is under vacuum which solvent condenses on the moisture to evaporate it and the water and solvent vapour are removed.
Patent GB-643088-A (GB)
Title: Pistons for engines using a compressible fluid
IPC: F16J1/02
Filed: 1947-10-16
Abstract: 643,088. Pistons. SANDERS, A. F. Oct. 16, 1947, No. 27701. [Class 122(i)] In a piston for an engine working with a compressible fluid, the whole of the surface of the skirt 11 (i.e., the portion below the main ring grooves), except for two relieved areas which are in the vicinity of the gudgeon pin bosses 17, provides a plurality of small bearing areas 21 of a size in relation to the skirt metal that they will crush down during the running in period of the piston to provide the skirt 11 with a fit having a minimum of clearance in the cylinder when the piston is well run in. The piston shown is of cast iron having an axial length of about 4 inches, a diameter of about 3 inches and each of the relieved areas subtends an angle of about 100 degrees at the piston axis and each has an axial length x of about 1.75 inches. Cavities 20 between the bearing areas 21 form wells for oil distribution.
Patent GB-971547-A (GB)
Title: Improvements in or relating to a locking mechanism for securing a mineral-cutting bit in a bit holder
Inventor: ELDERS GERALD WAYNE
IPC: E21C35/19
Filed: 1961-08-01
Abstract: 971,547. Mineral-mining pick securing means. E. & E. MINE SERVICE CO. Aug. 1, 1961, No. 27866/61. Heading E1F. A pick is secured in a pick box by a pin 27, 30 engaging in a detent 32 in the shank 15 of the pick, the pin 27, 30 being press fitted into an apertured, resilient, flanged plug 24 secured in an opening of complementary shape to the plug and extending laterally from the pick shankreceiving bore in the pick box.
Patent GB-280875-A (GB)
Title: Improvements in the cylinders and frames of internal combustion engines
IPC: F02B75/00
Filed: 1927-10-20
Abstract: 280,875. Sulzer FrÞres Soc. Anon. Nov. 22, 1926, [Convention date]. Cylinders, covers for and mounting; frames. - The cylinders, particularly of double-acting engines, are mounted on the frames by two systems of tie bolts. One system 6, 7 serves to connect the upper part of the cylinders to the upper part of the frame 1 and the second system 8, 9 the foot of the cylinders to the lower part. Where the bed plate 5 is separate from the frame, the lower system of bolts may be used to connect it to the frame. The upper system may be used to hold down the cylinder covers. The upper system may comprise four holding down bolts, two on each side. Each complete system is used for two adjacent cylinders.
Patent GB-892155-A (GB)
Title: Improvements in or relating to radar receiving systems
Inventor: MOZLEY ROBERT F
IPC: G01S13/70
Filed: 1953-10-09
Abstract: 892,155. Pulse radar. SPERRY RAND CORPORATION. Oct. 9, 1953, No 27903/53 Class 40(7).  In a radar ranging unit having search and track circuits the search circuit is operated until there is coincidence between the tracking gate and echo signal, when the tracking gate servo loop is automatically switched into operation by a circuit which is insensitive to noise. Tracking servo loop. A pulse, in phase with the transmitted pulse, is applied at 36 and produces early and late gate pulses at 52 which are compared with the echo pulse from 46 for time coincidence to produce a control D.C. error voltage, 57, which is applied as a bias at 38 to maintain the coincidence of the early and late gates with the echo. Automatic search in range. The early and late gates are formed at 44 into a narrow gate which is applied, with the echo signal, to the difference circuit 49, the output from which controls the operation of the sawtooth generator 58 applying the sweeping bias to 38, and thereby causes the narrow gate to sweep in range until an echo signal is intercepted.  Switching from search to track. In circuit 49, Fig. 5, the echo pulse is applied simultaneously to the anodes of valves 65, 66. The narrow gate is applied to the grid of 65 and a noise gate, produced later than the echo signal, to the grid of 66. When the echo and narrow gates coincide, valve 65 conducts in accordance with both noise and echo while the signal at the anode of 66 is a measure of noise only. The resultant signal at 80 corresponds to the echo signal only and operates relay 62 to disconnect the sweeping oscillator 58.
Patent GB-776425-A (GB)
Title: Method of correcting symbols or other characters recorded on a perforated tape or other recording medium
IPC: H04L17/08
Filed: 1955-09-30
Abstract: 776,425. Selective punching machines. CREED & CO., Ltd. Sept. 30, 1955 [Oct. 1, 1954], No. 27903/55. Class 31 (2). [Also in Groups XVI and XL (b)] For the correction by back-spacing of a tape perforated according to the information to be recorded, the perforations are overperforated, i.e. holes at all element positions, during the back-spacing steps. In the cases in which the characters corresponding to the recording are printed on the tape the printed characters are, during the back-spacing operation, over-printed with an erase sign or a suitable letter, such as a capital " X ". The actuation of the back-spacing key may simultaneously operate the letter-shift key to effect the over-perforation, and also a lever operating a type-head member to print " X " or the erase symbol.
Patent GB-1239884-A (GB)
Title: Improvements in or relating to high pressure rubber hoses
Inventor: KIKUKAWA RYOSUKE
IPC: F16L11/08
Filed: 1969-06-02
Abstract: 1,239,884. Hoses. BRIDGESTONE TIRE K.K. 2 June, 1969, No. 27912/69. Heading F2P. A high pressure rubber hose comprises at least two helically-wound metal wire layers, the metal wires of each layer each having a crosssection defined by a pair of opposed flat, parallel sides and a pair of semicircular sides. The ratio of the dimensions d to D is in the range of 1: 2 to 1: 5.
Patent GB-152601-A (GB)
Title: Gas valves
IPC: B64B1/60
Filed: 1920-10-01
Abstract: 152,601. Goodyear Tire & Rubber Co., (Assignees of Maranville, A. G.). Oct. 16, 1919. [Convention date]. Aerostats. -For forming a gas-tight closure between the fixed and movable parts 11. 20 of a balloon valve, two annular gaskets 23<a>, 23<b> of soft vulcanized rubber or other flexible material, having thin sharp-edged lips 27, 28, are secured to the parts 11, 20 so that, when the valve is closed, the lips 27, 28 are just in contact. The gasket 23<a> is secured to the member 20 by a binding 24, which is prevented from slipping by a bead 25, and the gasket 23<b> is secured to the ring 11 by a dovetailed portion 29 which enters a corresponding recess in the ring. Shoulders 23<1> may be formed on the gaskets to prevent the lips from contacting along their whole surface. In the Specification as open to inspection under Sect. 91 (3) (a), the gaskets are described applied to a valve as described in Specification 152,599. secured to a balloon by means as described in Specification 152,600. This subject-matter does not appear in the Specification as accepted.
Patent GB-637646-A (GB)
Title: Improvements in or relating to loud speakers
IPC: H04R1/30
Filed: 1946-09-18
Abstract: 637,646. Loud-speakers. LEAVIS, J. E. Sept. 18, 1946, No. 27934. [Class 40 (iv)] The emitters 10, 11 of a loud-speaker are arranged on opposite sides of the throat of a trumpet 12 and are axially disposed at a right angle or at least at a substantial angle of more than 30 degrees to the axis of the trumpet, a baffle member 15 being provided to divide the trumpet over part of its length into two portions each associated with one of the emitters. The radiations from the back of the emitters are caused to travel along relatively long paths formed by partitions of sound - absorbing material 24 in boxes 20 having opposed outlets 21, 22. The baffle member 15 is made of a hollow framework surfaced with plaster of Paris, cement or other non-resonant material.
Patent GB-753443-A (GB)
Title: Improvements in automatic control apparatus
Inventor: GROUT JOHN ARTHUR MUNFORD
IPC: F16K31/126
Filed: 1951-11-29
Abstract: 753,443. Fluid-pressure servomotor-control systems; valves. KENT, Ltd., G. Feb. 27, 1953 [Nov. 29, 1951], No. 28072/51. Class 135. In a control system operable either manually, or, with an integral control effect, in response to change in the value of a variable, a smooth transfer from manual to automatic operation is obtained by automatically comparing the potential automatic control effect with the active manual control effect and automatically adjusting the integral action of the automatic control to make the automatic control effect substantially equal to the manual control effect. In an embodiment, the pointer 1, Fig. 1, of an instrument measuring the variable is connected through links 2, 3, 5 to one end of a curved link 6, and the movement of this latter is applied through an adjustable radial link 7 to a lever 8 which constitutes a valve controlling the flow of fluid from a nozzle 11. The latter is supplied with fluid under pressure from a pressure regulator 12 through a capillary resistance 13, and the nozzle back pressure produced by lever 8 is applied through a volume-amplifying relay 14, past a selector valve 25, to a regulating unit R. The output of relay 14 is also applied through an adjustable needle valve 15 to one side of a bellows 16, and through a further needle valve 23 to the other side of the bellows. The movable end of the bellows is connected through a link, a bell-crank 19 and a further link 22 to the free end of link 6 so that the back pressure from nozzle. 11 will include components proportional to the value of the variable, the first differential, and the time integral thereof. The datum value of the variable is set by adjustment of a further pointer 4 connected to link 3. As shown, unit R is being controlled by the variable but, by reversing valve 25, it can be controlled manually by applying pressure fluid to the unit from a regulator 24. To ensure a smooth change-over when it is desired to change from manual control to control by the variable, the pressures in the two output lines 143, 241 are compared and the pressure on the " integral " side of bellows 16 is adjusted until the pressure in line 14<SP>3</SP> is the same as that in line 24<SP>1</SP>. This is done continuously by applying these two line pressures to the opposite sides of a bellows or diaphragm 26, Fig. 3, the resultant movement of which either opens a valve 34 to bleed off pressure from the " integral " side of bellows 16 via a line 37 or opens a valve 33 to supply the bellows with pressure fluid from a line 38.
Patent GB-647879-A (GB)
Title: Improvements in or relating to hasps for locks
IPC: E05B65/50
Filed: 1948-11-10
Abstract: 647,879. Hasp locks; hinges. LILLIE, A. E., and HIRD, H. Nov. 10, 1948, No. 28078/49. Divided out of 647,623. [Classes 44 and 65 (H)] A hasp for use with a lock for an attachÚ case or the like comprises an attachment plate 1 and a hasp plate 2 connected thereto by a pin 9 on which is mounted a torsion spring 11 the pin engaging pairs of lugs 6, 7 on the attachment and hasp plates. The lugs 6 on the attachment plate are bridged by an outwardly shaped hood 14 and the lugs 7 on the hasp plate 2 are formed with arcuate slots 10 permitting turning movement of the hasp plate, the outer face of which rocks on the edge 15 of the hood 14. The hood serves to exclude rain &c. from the hinge.
Patent GB-937915-A (GB)
Title: Turbo-propeller engine
IPC: F02C6/20
Filed: 1961-08-02
Abstract: 937,915. Gas turbine propeller engines. M.A.N.-TURBOMOTOREN G.m.b.H. Aug. 2, 1961 [Aug. 2, 1960], No. 28105/61. Class 110 (3). A gas turbine propeller engine comprises a compressor, one or more combustion chambers, a turbine driving the compressor and a separate power turbine which drives the propeller through reduction gearing, the output shaft or shafts of the gearing driving a hollow shaft which extends around the engine for at least part of the length thereof and is connected to the hub of the propeller, the hollow shaft being provided adjacent the propeller with inlet openings for air passing into the compressor. The reduction gearing is disposed in part at least between the compressor and turbines. The engine shown comprises a compressor 1 which is driven by means of a turbine 3 through a shaft 2, the air delivered by the compressor passing to a chamber 4 and thence by way of ducts 5, 5<SP>1</SP> to the combustion chamber 6. The combustion gases act first on the compressor driving turbine 3 and then on the separate power turbine 8, the gases then discharging through outlet 9. The power turbine 8 drives the hollow shaft 10, the pinion 11 of which meshes with three gears 12 which drive shafts 13. Pinions 14 on the shafts 13 engage with an internal ring gear on a sleeve 16 which is secured to a hollow shaft 15 mounted in a bearing 21, the shaft 15 extending over the engine compressor 1 for part of the length thereof. The shaft 15 is connected by means of struts 17 to the hub 18 of the propeller 19, the hub being mounted on a bearing 20. The annular space between the shaft 15 and hub 18 affords an air inlet to the compressor.
Patent GB-279258-A (GB)
Title: Improvements in and relating to percussion, descaling and like hand tools
IPC: B25D15/02
Filed: 1926-11-09
Abstract: 279,258. Thompson, G. H. Nov. 9, 1926. Percussive hand tools.-A percussive scaling or like hand tool is driven by a flexible shaft n connected to a bevel wheel j which is mounted in a casing arranged to swivel on a ring flange r coaxial with the tool spindle c driven by the bevel wheel. The swivelling movement may be limited by stops.
Patent GB-819109-A (GB)
Title: Devices for producing linear movement
Inventor: ELLIS PETER JAMES
IPC: F16H25/20
Filed: 1957-09-06
Abstract: 819,109. Screw and nut gearing. MULLARD Ltd. Sept. 6, 1957, No. 28208/57. Class 80 (3). [Also in Groups XL (a) and XL (b)] A mechanism for producing linear movement between a housing 3 and a rod 7 comprises a two-part rotary member 1, 2 screw-threaded into the upper part of the housing 3 and coupled by ball bearings 8 to transfer axial motion to the rod 7. Rotary motion of.the rod is prevented by stop pins 4 which engage slots 32 in the side of the housing. The two portions 1, 2 of the rotary member provide respectively upper and lower annular outer bearing surfaces 14, 21, the tightness of the bearing being determined by the setting of screws 13 connecting the two parts. A compressible fibre washer 5 or other resilient spacing member is interposed between the parts. The inner bearing surfaces 16, 26 are formed on a spindle 6 which is rigidly screwed into the end of the rod 7. A hexagon socket 12 or other form of connection is provided on the member 1.