baber/WOPTO huggingface dataset:
Patent GB-959406-A (GB)
Title: Improvements in or relating to ferromagnetic materials and processes for producing the same
IPC: C03C10/00
Filed: 1961-08-17
Abstract: A ferromagnetic material includes a b -eucryptite phase and a ferrite phase.  A glass batch to be melted and devitrified is so chosen as to include b -eucryptite constituents (SiO2 56.12; Al2O3 40.41 and Li2O 3.47 in weights per cent) and such that ferrite nuclei are formed during the meeting, or the batch may have added ferrite powder. Glass and ferrite powders may be mixed, fused and the resulting glass subsequently devitrified.  Small additions of Li2CO3; Na2O; K2O, B2O3 may be mixed with the glass and small quantities of T1O2 to assist crystallization of the glass.
Patent GB-445786-A (GB)
Title: Improvements in or relating to hydraulic power transmission systems
IPC: F16D33/02
Filed: 1934-10-18
Abstract: 445,786. Hydro-mechanical transmitting-arrangements. SINCLAIR, H., 28, De Vere Gardens, Kensington, London.- (Kiep, J. N.; 22, Reichskanzlerstrasse, Altona, Hochkamp, Germany) Oct. 18, 1934, No. 29784. [Class 80 (ii)] [See also Group XXIX] In a power transmission system in which the driven shaft of a hydraulic coupling is journalled at one end in the engine shaft or in the driving part adjacent to the engine shaft, and at the other end in or on a part of the driven apparatus, said driven shaft supporting a transmission element, an unobstructed radial clearance is provided between the driven shaft and the portion of the driving part remote from the engine shaft. In the form shown in Fig. 1, the coupling driven shaft 9 is journalled at 10 in the driving member and has a hollow friction clutch body 14 with a boss 9<1> journalled at 15 in the casing 3 of a variable-speed gear. The input shaft 16 of the gear is splined to the clutch member 20, and journalled at 17, 18. In another form, the friction clutch is dispensed with, and a throttling valve 25, Fig. 2, provided, and the driven shaft 9a is provided with a brake 36, 37 engaged when the valve 25 is inserted into the circuit. The shaft 9a is journalled at 10a, 15a, and the input gear shaft 16a splined at 29 to the shaft 9a and journalled at 17a.
Patent GB-1063053-A (GB)
Title: Improvements in or relating to colour testing apparatus
Inventor: SPURR RONALD FREDERICK
IPC: G01J3/46
Filed: 1963-07-26
Abstract: 1,063,053. Loudspeakers. A. J. LARGE. Jan. 22, 1964 [Oct. 23, 1962], No. 40063/62. Heading H4J. An apertured member of expanded synthetic plastics material is mounted within the cone of a sound reproducing device and at low audio frequencies vibrates in unison with the cone. A loudspeaker 10 (Fig. 2) has a frusto-conical main diaphragm 13, the edge 14 of which is supported by a frame 15 and the narrow end of which is driven by a moving coil unit 16. At the narrow end of the cone frustum is a convex rigid head 17. A rigid secondary member 18 of expanded polystyrene or polyurethane in the form of a plug of complementary shape to diaphragm 13 is secured by adhesive strip 20 to diaphragm 13 along continuous edge portions. Formed in the member 18 are ducts 24 which may be of circular cross-section of constant diameter but are preferably in the form of exponential horns the medial longitudinal axes 25 of which diverge. In order that the rear ends of the ducts 24 may be disposed opposite the front face of the main diaphragm 13 in as many different radial and circumferential positions as possible the rear ends of the ducts are disposed in a somewhat spiral manner, Fig. 3 (not shown). A central duct 26 of circular cross-section has eight transverse radially disposed ducts (27) of rectangular cross-section and their outer ends open on to the rear face 19 of the member 18. A button 28 assists in directing sound waves from the head 17 into the ducts (27). Lightening holes 30 may be provided. Member 18 may be made in three portions 31, 32, 33 adhesively secured together. At high audio frequencies the member 18 remains stationary, the high frequency sounds passing through the ducts 24, 27 and being projected through the front. Interference of sound waves from different ducts tends not to occur. Sound dispersion is improved and is assisted by the convex front face 21 of member 18. Stabilizer pads (41) of foamed polystyrene, Fig. 3 (not shown) cemented only to member 18 prevent diaphragm 13 and member 18 contacting each other. The pads (41) are not equi-angularly spaced and are also spaced at different radial distances from the diaphragm centre. Alternatively, the diaphragm 13 and member 18 are adhesively secured together along continuous edge portions by foamed polystyrene cushions (37), Fig. 4 (not shown). An extension 38 prevents overshoot of member 18 in a forward direction. Three separate foamed polystyrene cushions (40), Fig. 1 (not shown) may alternatively be provided, such cushions not being equiangularly spaced apart.
Patent GB-1438937-A (GB)
Title: Name strip holder for filing pockets
IPC: B42F21/06
Filed: 1972-06-26
Abstract: 1438937 Index tabs RONEO VICKERS Ltd 13 June 1973 [26 June 1972] 29821/72 Heading B6E An index tab for holding a label 11 comprises a flattened tube 7 having a window extending substantially the whole length thereof, or the tube being of transparent synthetic resin, a first longitudinal slot 9 being provided in one side face of the tube and a second (10), Fig. 2 (not shown), in the opposite face so that a label 11 can be passed into one slot and out of the other and then pivoted to lie within and parallel to the tube, and be visible from the front. The tab is T-shaped in cross-section, the stem 1 of the T having flaps 3 with projections 4, 16 for clipping on to a filing pocket (2), Fig. 5 (not shown), with apertures (5) (17). The bottom end 8 of the tube is closed and ribs 13, 14 are provided in one slot to retain the label, which may be a paper covered wood veneer strip. The front of the tube may be lenticular.
Patent GB-355563-A (GB)
Title: A process for the manufacture of cellulose ethers
IPC: C08B1/06
Filed: 1930-10-06
Abstract: Cellulose ethers are prepared from material such as cotton, wood-cellulose, or sulphite-or sodium cellulose by subjecting the raw material to a short preliminary treatment with alkali lyes so as to remove oxycellulose, hemicellulose, pentoses, mannan, and xylan, washing with water till neutral, repeating this preliminary treatment if desired, drying, preparing alkali cellulose without introducing any ripening process, and etherifying with an ester of an inorganic acid.  The alkali lye for the preparation of the alkali cellulose, and the etherifying agent are used in about or slightly above the theoretical amount.  An example is given of the preparation of ethyl cellulose, the preliminary treatment with the caustic soda of 20-25 DEG  B<\>e being repeated 4 to 5 times.  The ethyl cellulose possesses a high viscosity and may be used in the preparation of films, insulating materials, lacquers, and plastic masses. Specifications 229,678, 249,173, 278,767 and 288,997, [all in Class 2 (ii), Cellulose &c.], are referred to.  The Specification as open to inspection under Sect. 91 (3) (a) of the Acts comprises also the use of benzyl chloride as an etherifying agent.  This subject-matter does not appear in the Specification as accepted.
Patent GB-824347-A (GB)
Title: Improvements in or relating to thermoelectric devices
Inventor: BAKER PETER DONALD
IPC: H01L35/34
Filed: 1956-10-01
Abstract: 824,347. Thermoelectric devices. GENERAL ELECTRIC CO. Ltd. Sept. 30, 1957 [Oct. 1, 1956], No. 29848/56. Class 37. A thermoelectric device comprises a coplanar assembly of P-type and N-type elements 1 arranged alternately between two metallic plates 2 and 3 which have been divided at 4 into small strips so that the P and N elements are connected in a desired relationship. Fig. 1 shows only the top plate 2, and the elements are all connected in series. The plates may be of aluminium and may be divided by spark erosion. The semi-conductor may consist of bismuth telluride, and the device may be adapted for use as a cooling unit for a refrigerator.
Patent GB-190327-A (GB)
Title: Improved attachment to facilitate the gripping of a wheel of a motor lorry or other vehicle
IPC: B60B15/26
Filed: 1921-11-10
Abstract: 190,327. Pinder, E. C. Nov. 10, 1921. Stands or supports for vehicles. - An appliance for extricating vehicle wheels from soft ground consists of a member secured to the side of the wheel and having a surface eccentric to the tread and adapted to bear upon such ground. Plates G, Fig. 4, are secured by metal straps g to similar plates on the opposite side of the wheel and by chains H to the wheel. In a modified form, the appliance consists of a cam-shaped member J, Fig. 5, secured to the wheel by bolts band plates e on opposite sides of the webs of the spokes. The member J consists of a channel filled with wood. In a further modification, a plate L, Fig. 8, carrying a cam-shaped plate K on brackets k is secured to the wheel by bolts p and has gripping strips m extending across the tread. A plank may be used between the appliance and the ground, as shown in Fig. 5. The appliances shown in Figs. 5 and 8 may be secured to the hub, and one or more appliances may be used at one or both sides of the wheel.
Patent GB-445883-A (GB)
Title: Improvements in or relating to carbonising chambers retorts and the like especially for use in the low temperature distillation of carbonaceous material
IPC: C10B49/00
Filed: 1934-10-19
Abstract: 445,883. Carbonizing-apparatus. THOMAS, O., 196, Erith Road, Bexley Heath, Kent, and KEMP, A. V., The Red Cottage, Pinner, Middlesex. Oct. 19, 1934, No. 29963. [Class 55 (i), Apparatus for the low-temperature carbonization of coal and other carbonaceous materials comprises an outer chamber 6, and a movable inner chamber 7, between which is a space 8 containing the charge, an abutment 14 on the inner chamber serving to compress the charge, and to discharge the treated material when the inner chamber is moved relative to the outer chamber. The charge is introduced through an inlet 18, and is distributed by a conical device 19 into a chamber 17 when it is preheated and stirred by a plough 20. When the inner chamber is raised by the shaft 12, the abutment 14 lifts an annular valve ring 15, and allows the charge to fall into the space 8 between the chambers. After carbonization, the inner chamber is lowered, and with it a cylinder 23, 26 until an abutment 25 rests on a supporting member 27, when, with further movement of the inner chamber, the abutment 24 ploughs off the treated material from the inner chamber on to a shoot 28, the abutment 14 acting as a ram. Distillates from the preheating chamber 17 are removed through an outlet 21, and those from the chamber 8 escape through radial slits between the sections of the chamber 7, which slits are cleared by blades 31 secured to the top of the outlet pipe 29. A rod 33 carries scrapers 34, 35 for clearing the pipe 29, the lower scraper 35 closing the outlet 36, when the inner chamber is in its lowest position, a hood 32 also closing the top of the pipe 29. Heating is provided by combustion gases which enter by an inlet 4, circulate through conduits 2, and escape through an outlet 5.
Patent GB-883580-A (GB)
Title: Fluid flow control valve
Inventor: LEE LEWIS ROBERT
IPC: F15B13/06
Filed: 1960-09-01
Abstract: 883,580. Hydraulic apparatus. FORD MOTOR CO. Ltd. Sept. 1, 1960, No. 30124/60. Class 69 (2). An hydraulic directional control valve comprises flow control devices 3, 4 arranged to control the quantity of fluid delivered to two or more services, and means 6 for selecting the delivery to each service, all the services utilizing a common dump valve 5 to exhaust fluid in excess of requirements. The control valve which may be used in a tractor hydraulic system for operating a single or double-acting motor in addition to the main tractor-lift system, consists of a spool 6 slidable in a bore connected by ports 7, 8 to a line 2 connected to a source of fluid pressure, ports 12, 13 which are connected to ports 22, 23 leading to the ends of a double-acting jack, a port 9 connected to valve gear controlling the tractor-lift system, and ports 37, 39 connected to a return line 38. Between the line 2 and each port 7, 8 is a throttle valve 3, 4 which may be of the needle valve, fixed orifice or, as shown, eccentric-type adjustable by a lever. The line 2 is also connected to one side of the dump valve 5 so that pressure in the line acts to move the spool thereof to an open position in opposition to a spring 20. The side of the spool on which the spring acts is joined by a passage 35 to the bore of the control valve. Between ports 12 and 22 and between ports 13 and 23 are check valves 15, 15<SP>1</SP> controlled by a shuttle 14. When the spool 6 is in its central position, fluid pressure from the line 2 passes through the throttle 3 and ports 8, 9 to the valve gear of the tractor lift system, the flow being controlled by the throttle 3. The pressure between ports 8, 9 is transmitted by passages 28, 29 in the spool of the control valve to the passage 35 so that the pressure differential across the throttle 3 acts on the valve to control the flow of excess fluid to the exhaust line 38. Since the port 8 is closed, fluid does not flow past the throttle 4 to the double-acting jack. When the spool 6 is moved in one direction or the other against the pressure of a spring 24, the port 9 is disconnected from port 8, so that the throttle 3 is inoperative, and the supply is connected by the throttle 4 and port 7 to one or other of ports 12, 13, the pressure at the high-pressure port acting to open its associated check valve to pass fluid to the jack, and move the shuttle 14 to open the check valve associated with the low-pressure port to permit exhaust fluid to pass from the jack to the port 37 or 39 and the return line 38.. The movement of the spool 6 moves a land 6b on the spool away from the passage 35 to enable the pressure downstream of the throttle to act on the dump valve 5 in opposition to the pressure upstream of the throttle. If the double-acting jack is replaced by a single-acting jack, the latter is connected to one or other of ports 22, 23, the remaining port being plugged.
Patent GB-1437792-A (GB)
IPC: G02B6/30
Filed: 1973-06-25
Abstract: 1437792 Light guides BELL-NORTHERN RESEARCH Ltd 25 June 1973 [26 June 1972] 30136/73 Heading G2J [Also in Division H1] An apparatus for coupling a laser beam 10 to an optical fibre 14, 15 comprises a planar waveguide 12, a coupler for coupling the beam 10 into the waveguide, e.g. a grating 11 or a prism, means for focusing the coupled beam at an exit of the waveguide, and means for mounting the fibre with its core 15 coaxial with the optic axis of the focusing means and near the exit. The focusing means may comprise a taper in the waveguide extending towards the exit and/or a thin film lens (17) on the waveguide, see Figs. 2 to 5 (not shown), and the mounting means may comprise a channel (21, 22) in a substrate 16 which supports the waveguide, see Fig. 6 (not shown). The substrate may be of silicon, with an interlayer 19 of silica or epoxy resin.
Patent GB-890392-A (GB)
Title: Metal strip having rounded edges and method of and apparatus for producing the same
Inventor: HEDGECOCK DURWOOD JACOB
IPC: B21D19/00
Filed: 1959-09-03
Abstract: 890,392. Making electrical conductors; rolling. REYNOLDS METALS CO. Sept. 3, 1959, No. 30159/59. Classes 83 (2) and 83 (4). In a method of shaping the edge of a metal strip the strip is moved under tension between and in edgewise contact with tapered rolls, the inner boundary of contact between the strip and the rolls being progressively displaced towards the centre line of the strip and the strip being simultaneously and progressively widened and also reduced in thickness at the extreme edge. An aluminium strip 11, Fig. 1, is drawn by a driven spool 20 from a coil 10 through guide rolls 12, through roll-stands 14 and 15 and then after optional treatment of the edge by a revolving bush 16 through a conventional anodizing bath 18. The roll stand 14, Figs. 2 and 5, comprises resiliently-urged carriages 29, 30 slidable on guide rods 27, 28 each carriage mounting housings 42, 52 for a pair of tapered rolls 46, 56, the rolls being secured to the housings by bolts 48, 58. The pass between the rolls is adjusted by a bolt 50 passing through each pair of housings. Each pair of rolls 46, 56 and 47, 57 engage a respective edge of the strip and roll it to a taper as shown in Fig. 12, where the tapered portion adjacent the upper and lower surfaces of the strips is formed by the rolls of the stand 14, which have a surface tapering at 22 degrees to the roll axis. The following stand 15 is similarly constructed but the rolls have a taper angle of 45 degrees to form the remaining tapered surfaces 64, 65. In a modification, four roll-stands may be used to produce an edge-profile as shown in Fig. 13. The rolls stands may be driven or idle.
Patent GB-1109208-A (GB)
Title: Improvements in or relating to power supply circuit arrangements for printing machines
IPC: B41J9/44
Filed: 1966-07-05
Abstract: 1,109,208. Selective signalling. SOCIETE INDUSTRIELLE BULL-GENERAL ELECTRIC. 5 July, 1966 [27 July, 1965], No. 30221/66. Heading G4H. [Also in Division H3] In a circuit for charging a plurality of capacitors C1, Fig. 2, each associated with a printing hammer solenoid EAM (only the circuitry for one solenoid being shown to the right of line YY), firstly a negative pulse applied to a control terminal 16 fires a thyristor TH1 which causes a common line 15 to fall towards - 80 V (lead 13) via a diode D4, and secondly when line 15 has fallen to - 48 V a Schmitt trigger 17 changes its state and via a transistor T5 and a further thyristor TH2 cuts off the first thyristor TH1. The line 15 is then brought to - 14 V by a potential divider 21, 32 and a conducting transistor T2 if printing is about to take place immediately, otherwise the transistor T2 is cut-off and a Zener diode DZ1 maintains the line 15 at - 48 V. Actuation of a print hammer is achieved by applying a negative pulse to a transistor T7, line 15 having previously been raised to - 14 V which causes the capacitor C1 to discharge through the associated solenoid.
Patent GB-1275181-A (GB)
Title: Ester ofhydroxyethylpiperazinylpropylidenetrifuoro-methyl-thiaxanthene
IPC: C07D409/04
Filed: 1970-06-22
Abstract: 1275181 Ester of hydroxyethylpiperaziny propylidene-trifluoromethyl thiaxanthene KEFALAS AS 22 June 1970 [20 June 1969] 30254/70 Heading C2C A novel α-isomer of the decanoic acid ester of 10 - [3 - (4 - hydroxyethyl - 1 - piperazinyl)- propylidene]- 2 -trifluoromethyl thiaxanthene (I), and non-toxic acid addition salts thereof, are obtained by reacting 10-[3-(4-hydroxyethyl-] - piperazinyl) - propylidene] - 2 - trifluoromethylthiaxanthene in the form of its α-isomer or a mixture of isomers, with a reactive derivative (e.g. acid chloride) of decanoic acid and isolating the ester in the form of the free base or of a non- toxic acid addition salt, and if necessary isolating the α-isomer from a mixture of isomers. Pharmaceutical compositions useful for treatment of psychotic disorders comprise (I) or a non-toxic acid addition salt thereof, together with a pharmaceutically acceptable carrier in forms suitable for oral or parenteral administration.
Patent GB-831109-A (GB)
Title: Improvements relating to drawer and like slides
Inventor: GUSSACK NATHAN ABRAHAM
IPC: A47B88/04
Filed: 1958-09-23
Abstract: 831,109. Drawer runners. GRANT PULLEY & HARDWARE CORPORATION. Sept. 23, 1958, No. 30293/58. Class 52(1) A fixed rail 11 has central and lower flanges 15, 12 between which run a rear roller 40 carried by the rail 20 mounted on the side of a drawer, an upper flange 22 on the rail 20 riding over a roller 30 mounted at the front upper corner of the rail 11. Stops 17, 27 struck from the rails prevent complete withdrawal of the drawer unless it is tilted as in Fig. 2 and a dwell 25 in the flange 22 holds the drawer closed. The rollers are preferably of nylon or nylon tyred.
Patent GB-323828-A (GB)
Title: Improvement in screw propeller
IPC: B64C11/06
Filed: 1928-10-19
Abstract: 323,828. Caldwell, F. W. Oct. 19, 1928. Addition to 305,454. Screw propellers.-In screw propellers with blades mounted on sockets on the boss as in the parent Specification the socket is tapered and the blades are held by a common piece tending to force them on the sockets. The blade a is tapered at the root b and fits over a socket e. Half couplings i are employed the edges m of which take over shoulders g on the blades and hold them against centrifugal force, and the two halves are held together by bolts.
Patent GB-859055-A (GB)
Title: Improvements in or relating to aircraft flight control systems
IPC: B64C13/24
Filed: 1957-09-27
Abstract: 859,055. Controlling aircraft. GENERAL ELECTRIC CO. Sept. 27, 1957 [Oct. 1, 1956], No. 30336/57. Class 4. [Also in Group XXXV] An aircraft flight control system comprises means operable manually by a human pilot and an automatic pilot that are alternatively effective to apply a command signal to the input of a servo system arranged to control the position of a movable control surface of the aircraft in dependence upon the command signal developed by either the said manually operable means or the automatic pilot, wherein both the said manually operable means and the automatic pilot are connected to the input of the servo system through common limiter means, whereby the command signal applied to the input of the servo system, whether it be by the said manually operable means or by the automatic pilot, is precluded from exceeding a predeterm ined magnitude. A control column 12 pivoted at 34 on the aircraft, has a rigid internal connection 13 for a flexible control stick 10 which may be manually deflected within the column 12. The stick carries a contact 18 which wipes over a potentiometer 14, energised by a voltage source 16, to derive a signal of magnitude and polarity determined by the position of the stick. The signal is amplified at 22 to operate a motor 24 controlling the movement of elevators 26, the motor being provided with mechanical connections 30 and 30a to a feedback signal generator 28 and an anti-hunting tachometer 32 respectively. The control signal may be derived from an auto-pilot 70 which connects with amplifier 22 through an automatic switch 72 comprising a contact 75 on stick 10 which upon movement of the stick engages either of spring mounted contacts 76 or 77 to energise a solenoid 78 to open contacts 73 and close contacts 74. With the auto-pilot in operation and the stick in mid-position switch 72 would be deenergised and the circuit from 70 to 22 completed through contacts 73. The signal derived at the control column or the auto-pilot may impose excessive elevator deflection at high speed with consequent structural overloading and a signal strength limiter 40 is provided. This consists of a pair of oppositely-poled rectifiers 44 and 46 connected across the input to amplifier 22 and biased by resistors 48 and 50 so that the rectifiers are non-conducting to any signal of less strength than the bias voltage. This bias voltage to resistors 48 and 50 is provided by the voltage drop across a potentiometer 52 energised from voltage source 16, the bias voltage being varied by a slider 54 moved over potentiometer 52 by the action of a mach meter 56 so that as aircraft speed increases, machmeter 56 moves slider 54 to pick off a smaller bias voltage from potentiometer 52, which must be wound to suit the aircraft characteristics and operating conditions. Specification 849,307 is referred to.