baber/WOPTO huggingface dataset:
Patent GB-465765-A (GB)
Title: Colour photography or kinematography
IPC: G03C7/30
Filed: 1936-09-23
Abstract: 465,765. Colour photography and kinematography. TRUECOLOUR FILM, Ltd., DOLGORUKI, E. SANDERS-, and REINDORP, J. H. Sept. 23, 1936, No. 25788. [Class 98 (ii)] Component dyestuff images produced by colour development, as for example with a developer containing alpha-naphthol or para-nitrobenzyl cyanide, are improved in transparency and rendered less grainy by treatment with a dilute solution of phenol, e.g. a 4 per cent solution, applied after removal of the silver in the images. A single component dyestuff image may be so treated, and also the colourdeveloped components of a multicolour multilayer picture produced either wholly by colour development, or partly by colour development and partly by other methods, e.g. dye toning, or selective dye destruction under control of the silver image.
Patent GB-415894-A (GB)
Title: Improvements in and relating to containers for compressed fluids
IPC: G01M3/32
Filed: 1933-09-18
Abstract: 415,894. Storing gases &c. under pressure. PYRENE CO., Ltd., and ZIESCHANG, R., Great West Road, Brentford, Middlesex. Sept. 18, 1933, No. 25815. [Class 8 (ii).] A Bourdon tube 7 is open to the pressure within a container 1, e.g. for fire extinction, and when the pressure is sufficient holds a saddle-shaped piece 10 against a skirt on the container ; this clamping action ceases when the pressure falls. The movability of the saddle 10 may be observed through an aperture 12 and its pressure condition deduced thereby. In a modification, the Bourdon tube or the like may, when the pressure is sufficient, hold the container rigidly in a support, fall of pressure causing the container to move in its support.
Patent GB-537649-A (GB)
Title: Improvements in spinners for airscrews
IPC: B64C11/14
Filed: 1939-09-14
Abstract: 537,649. Airscrew spinners. CHARLES, H. N. Sept. 14, 1939, No. 25871. [Class 114] The airscrew spinner 10 is detachably attached at its rear end to a back plate 11 carried by the air screw hub by means of dowels 35 which are resiliently mounted by means of rubber packing rings 31, 32 with terminal lips 33, 34 in thimbles 30 riveted to the back plate. The dowels are designed to take into dowel housings 45 carried by a flange plate 42 attached to the spinner. The dowels are locked by transverse pins 47 which partly engage with complementary recesses cut in the dowels. Each dowel is released by rotating the pin through 180 degrees by means of a screw driver, whereby the spring-pressed plunger 53 engaging the flat 50 on the locking-pin is pressed back into its cap 51. Locating dowels and housings without locking means may also be provided.
Patent GB-246897-A (GB)
Title: Improvements in space discharge tube systems for electric wave signalling
IPC: H02M1/14
Filed: 1924-10-30
Abstract: 246,897. Western Electric Co., Ltd., (Western Electric Co., Inc.). Oct. 30, 1924. Converting pulsating currents into steady continuous currents. -Relates to the supply of fila. ment heating and plate currents and of grid potentials to the valves of electric signalling systems from a source of rectified alternating currents. According to the invention, a filter is interposed, made in two parts 28, 41, Fig. 1, comprising capacities 52<1>, 51<1>. 55<1> in shunt, and impedances 53<1>, 54<1> in series, one impedance 53<1> being inductive and the other 54<1> non-inductive. The supply system comprises a source of alternating current 55, connected to the primary 49 of a transformer 32 provided with three secondaries 30, 31, 33; two of these 30 and 31 are connected as shown to a rectifying valve 29 and to the filter ; while the third secondary 33 supplies alter. nating current to the filaments 23, 47, 48 of the valves, two condensers 51, 52 being shunted in series with each other across this secondary, and the mid-point of the condensers connected to the cathodes 22 of the valves. A modified arrangement of filament-heating circuit is shown in Fig. 2, in which a single condenser 51a is connected on one side to the middle of the secondary 33, and on the other side by a lead 53 to the cathodes of the valves. The aerial circuit comprises a tuning condenser 11 in series with a loading coil 12 and the primary of a transformer 13, the secondary of which is tuned by a condenser 15 and connected at one end to the grid of the H.F. valve 21, at the other end to the anode of the same valve through a variable condenser 14, and at the middle to a filter 24 comprising a capacity 24<1> and a resistance 24a in conjunction with a resistance 25 shunted by a capacity 25<1>. The grid of the L.F. valve 42 is connected through the secondary of a transformer 37 to a similar filter 43. The resistance 25 common to these two filters is connected between the main filters 41, 28 and the cathodes of the valves, which are all connected to earth. The anodes of the H.F. and L.F. valves are connected through the primaries of transformers 26, 45 respectively to the point between the resistance 54<1> and the inductance 53<1> of the main filters. The anode of the detector valve is connected through the primary of the transformer 37 to the other end of the resistance 54<1>. Reference has been directed by the Comptroller to Specifications 241,944 and 241,946.
Patent GB-384007-A (GB)
Title: Improvements in or relating to electric switches with arc extinction by self-generated vapour
IPC: H01H33/76
Filed: 1931-09-15
Abstract: 384,007. High-tension switches. SIEMENS - SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Sept. 15, 1931, No. 25889. Convention date, Sept. 18, 1930. [Class 38 (v).] In liquidbreak switches instead of the arc being drawn under the surface of a conducting or semiconducting liquid it is drawn in the neighbourhood of bodies steeped in liquid in which they are immersed so that the contacts themselves are not immersed. In the arrangement shown in Fig. 1, the arc 12 is drawn between the contacts 10, 11 and is controlled by a magnetic field due to the coil 13 so as to impinge upon a porous body 15 one end of which dips into the quenching liquid, which may be water. Sufficient vapour pressure is developed to ensure the deionization of the gases in the arc path..The arc is extinguished at the zero point of the A.C. cycle. In the construction of " expansion " , switch shown in Fig. 2, an inner are chamber is formed by substances permeated with capillaries such as a wick 23 dipping into the liquid 21. When the contact 30 is moved from the fixed contact 22 spring-pressed plates 24, 25 restrict the inner arc chamber to confine the arc more closely to the liquid-impregnated material. The arc is extinguished when the contact 30 leaves the container.. In a modification, Fig. 3 (not shown), the upper end of the chamber is closed by a spring-pressed cover which opens only when sufficient vapour pressure has been developed to ensure, on expansion, the complete deionization of the arc path.
Patent GB-488245-A (GB)
Title: Improvements in the manufacture of multi-coloured rubber mixings
IPC: B29C48/475
Filed: 1937-09-24
Abstract: 488,245. Variegated rubber. FROLICH, E. Sept. 24, 1937, No. 25946. [Class 70] Variegated rubber or like material with any desired marble or grain effect is produced by superimposing variously coloured sheets of natural or synthetic rubber or plastic materials such as synthetic resin and pressing the heated assembly, rolled into the form of a cylinder, through a wire lattice or perforated metal sheet, the holes of which correspond in shape and size to the required variegated pattern. The mixing so obtained is then moulded and vulcanized in any desired manner. The apparatus used consists of a steel cylinder surrounded on its exterior with heating channels b, which is provided at one end with a wire lattice or perforated metal plate f, a piston d forcing the assembly through the holes in the lattice or plate.
Patent GB-173020-A (GB)
Title: Improvements in locking devices for securing spare tyres to automobiles and for other like purposes
IPC: E05B67/00
Filed: 1920-09-09
Abstract: 173,020. Johnson, C. L. Sept. 9, 1920. Securing reserve tyres on vehicles.-One end 8 of an armoured cable 10 is secured in an aperture in a block or bar 5, the other end being passed round the tyre-carrier, and through a second aperture 13. The cable is formed at this end with a screwed terminal 9, engaged by a tightening nut 14, a spacing locking-member 18, riding over ratchet-like recess 19 in the top face of the nut, allowing it to be screwed up, but preventing it from being unscrewed. The bolt is controlled by a pin-tumbler lock, the cylinder of which carries a follower 25 to withdraw the bolt, a snap spring 29, bearing upon the follower, retaining it in that position. The nut 14 is formed with a groove 17, in which engages an underhung flange 16 formed on a V-shaped piece carried by the bar. The nut is thereby held up against the bar 5, and cannot be removed until it is screwed completely off the terminal 9. The terminal 8 of the cable may be inserted in either a vertical aperture 11<a> or an horizontal aperture 12 in the bar, according to whether one or two tyres are to be carried. The rim 2 bearing the tyre 1 is supported by a circular member having an upturned edge 4.
Patent GB-1336830-A (GB)
Title: Floating anti-pollution barrier
IPC: E02B15/06
Filed: 1972-06-02
Abstract: 1336830 Floating booms PNEUMATIQUES CAOUTCHOUC MANUFACTURE ET PLASTIQUES KLEBER-COLOMBES 2 June 1972 [2 June 1971] 25964/72 Heading E1H A floating anti-pollution barrier comprises a skirt of flexible material, e.g. rubber-coated woven material, formed with air pockets 15 which have an opening located in use, below the surface of the water. The skirt comprises a folded strip of material forming walls 10a, 10b which are bonded together at regions 14 to define the pockets 15, and are fastened together at folds 20 by pins 19, or rings, Fig. 6 (not shown), which also support a ballasting chain 21, a towing cable 12 also being provided. The pockets 15 are expanded by helical springs 11 which are attached to one wall to permit collapsing of the spring, Fig. 5 (not shown), when rolling up or folding the barrier for storage, and to permit automatic expansion of the pockets when deploying the barrier. Springs 11 may be replaced by hoops fixed to both walls for a non-collapsable barrier. One wall 10a or 10b may extend below the other wall to form a skirt and be secured thereto by straps.
Patent GB-1513313-A (GB)
Title: Semiconductor heterostructure devices
IPC: C30B19/06
Filed: 1975-06-19
Abstract: 1513313 Liquid phase epitaxy WESTERN ELECTRIC CO INC 19 June 1975 [20 June 1974] 26079/75 Heading B1S [Also in Division H1] A semiconductor heterostructure device includes an epitaxially deposited layer comprising a first zone of a narrow bandgap composition, a second zone of a wider bandgap composition, and therebetween a transition zone thicker than the first and second zones and grading between them as regards composition and bandgap. The device is formed by liquid phase epitaxy using a conventional sliding contact solution growth method, modified in that one well 2' Fig. 2 of graphite solution holder 10' is divided longitudinally by a partition 2.3, different growth solutions being placed on opposed sides of the partition. As the seed crystal 12 slides beneath the well the first and second zones deposit from the two solutions and the thicker transition zone deposits below the partition 2.3, the lower temperature produced there by the high thermal conductivity of the material of the partition 2.3. The partition 2.3 may be made of carbon or BN and its lower edge is preferably beveled. Separation of the two solutions, resulting in greater compositional difference between the first and second zones, is achieved by the use of separate "saturating seeds" 16.1, 16.2 Fig. 3 in the slider 14, the seeds 16.1, 16.2 being located so that one aligns with each of the divisions in the well 2' of solution holder 10'.
Patent GB-1349190-A (GB)
Title: Image-transmission
IPC: H04N1/23
Filed: 1971-04-19
Abstract: 1349190 Colour facsimile FUJI TELECASTING CO Ltd 19 April 1971 [4 April 1970] 26082/71 Heading H4F In a colour facsimile system, Fig. 1, the reproducer comprises a set of different coloured pens 26, 27, 28, 29 arranged around the reproduction web-carrying drum 31 and bearing on the web, with a pressure controlled by the respective colour video signal, to deposit their inks in amount dependent on said pressure. The pens are described as ball point pens 44, Fig. 2A, mounted on the flexible diaphragm of a moving coil speaker type solenoid, the moving coil 40 receiving the video signal and moving in the air gap of a permanent magnet assembly 37, 38. The pen moves through P.T.F.E. bearings 42, 43. In the facsimile system, the original document 2 on drum 1 is illuminated by source 5 and 6 and red, green, blue and luminance (or cyan, magenta, yellow and luminance) components are detected by photo-electric transducers 7, 8, 9, 10. The colour video signals are time division multiplexed at 15 and transmitted over link 19 (radio or line) to the receiver station. After demultiplying at 21, the colour video signals and the luminance signal are fed to the respective ball-point pen assemblies 26, 27, 28, 29. The pens are kept at a constant distance from the web by roller 45. Synchronizing signals are generated at the transmitter by wheel 16 and pick up 17 and after extraction at the receiver stations are phase compared at 34, with similarly generated sync. signals from the receiver drum. The result of the phase comparison is used to control the drum motor 35. The web is underlaid with a resilient sheet, e.g. rubber, to allow movement of the pens. A felt bar on the drum surface is provided to wipe excess ink from the pens.
Patent GB-878372-A (GB)
Title: Improvements in or relating to proximity switches
Inventor: FIELDEN JOHN ERNEST
IPC: G01F23/26
Filed: 1959-07-30
Abstract: 878,372. Determining levels of fluent materials. FIELDEN ELECTRONICS Ltd. July 14, 1960 [July 30, 1959], No. 26145/59. Class 37. A proximity detector in which an oscillatory circuit oscillates or is quiescent dependent upon the value of the capacitance between an electrode and a body, includes a high-frequency cable transformer-coupled to the electrode and the oscillatory circuit. Auto-transformers 9 and 15 couple cable 13 to electrode 5 and oscillatory circuit 1, the oscillatory condition of which controls circuit 3 and is itself dependent upon the capacitance between electrode 5 and fluent material 8 in conductive container 7. The turns ratio of transformer 9 and 15, arranged to reduce the effect of the cable capacitance compared with that of the electrode, are preferably the same. Circuit 3 may control the rate of supply of material to or from container 7, or operate an alarm.
Patent GB-518892-A (GB)
Title: Airplane screw propeller
IPC: B64C11/00
Filed: 1938-09-07
Abstract: 518,892. Screw propellers. BENJAFIELD, W. O. Sept. 7, 1938, No. 26148. Convention date, Sept. 29, 1937. [Classes 4 and 114] A screw propeller is formed with a number of rearwardly inclined spiral blades having their outer edges inclined to the rear away from the inner edges, the latter being increasingly spaced from the axis of the shaft. Propellers 18 are driven by motors 16 spaced on either side of the longitudinal axis of a biplane being supported therefrom by a framework 22. At the front are shields 23, which can be moved to mask or unmask the flow to the propeller. The engine 16 drives a shaft 17 and upon a sleeve 25 thereon are mounted spiral blades 26. Spaced therefrom and surrounding them are spiral blades 28 which are supported by arms 33 from an outer casing 31. - On the inner periphery of the casing are short blades 32 pitched slightly behind the main blades 28. Further spiral blades 34 may be provided on the outer surface of the cylinder 31. The cylinder may have an access opening 38 in its wall which is normally closed by a cover 39. In place of the parallel sleeve 25, the blades may be mounted upon a conical sleeve 36 and such sleeve may have notches 35. In addition the sleeve may have intermediate cut-away portions which are joined by bars. In front of the sleeve 31 is a 2-part head member 23 which can be moved to close or open the fore end of the sleeve either by manual means or by automatic means depending upon control from a speedometer.
Patent GB-261818-A (GB)
Abstract: 261,818. Samuels, J., Slade, P., and Ward, J. F., July 28, 1925. Non-conducting coverings for heat.-Materials which may be used as non-conductors of heat are made of waste pieces of buckram and allied fabrics, such as stiffened net and oparterie, obtained especially in hat making;' these are dipped into a liquid containing a filling-material, with or without a binding agent, and the pieces are built up into a layer or block, and subjected to heat and pressure. The stiffening normally present in buckram may serve as binding-agent, or additional binders, such as glue may be used. Sawdust, silver sand, powdered glass, kieselguhr, or china clay may be used as fillers, and may be sprinkled or spread upon the buckram. Silk, paper, felt, or similar surfacing materials may be applied to one or more surfaces of the layers or masses before treatment with heat and pressure. As an example, a waste piece of buckram is coated with glue, sawdust and sand is sprinkled over it, and a second piece of buckram is superposed. The procedure is repeated until the requisite thickness is obtained, and the material is then subjected to a pressure of 80 to 100 lbs. per square inch, and the temperature of a hatshaping machine. The material may be moulded prior to or during the pressure and heat treatment. In another example, small cuttings, dipped in glue, are spread upon a piece of damp buckram, and spread with sawdust, and a further layer of cuttings is added. This is continued, as necessary. A pieoe of buckram is placed over the whole, which is treated by heat or pressure. In another example, a, fine cotton fabric is covered with waste buckram pieces which have been dipped into a bath of glue and china, clay, and treated with heat and pressure as before. Specification 776/76, [Class 42, Fabrics, Dressing &c.]. is referred to. According to the Provisional Specification, fabrics other than, buckram, such as canvas, may be utilized, and other binding- agents, such as tarry matters, resins, cements, and plaster of Paris.
Patent GB-534935-A (GB)
Title: Improvements in and relating to the preparation of compounds of morpholine
IPC: C07D295/023
Filed: 1939-09-19
Abstract: 534,935. Morpholine compounds. HARRISSEYBOLD-POTTER CO. Sept. 19, 1939, No. 26202. Convention date, April 29. [Class 2 (iii)] Compounds of morpholine with sulphur dioxide are prepared by passing sulphur dioxide into morpholine at a temperature below 120‹ C. until an amount of sulphur dioxide equivalent to ¢ mol. per mol. of morpholine has been absorbed. The product is a clear colourless liquid which can add on ¢ mol. of water to form white crystals of morpholine sulphite of the probable formula M  2 H  2 SO  3 , where M represents morpholine. By continuing the introduction of sulphur dioxide, but at a temperature below 60‹ C., a further ¢ mol. becomes absorbed. This product is a white powder at ordinary temperature which will take on 1 mol. of water to give white crystalline morpholine bisulphite of the probable formula MH 2 SO  3 . Both the sulphite and bisulphite may be purified by washing with ether or crystallizing from alcohol. The products are useful as photographic developers, local anaesthetics and anti-oxidants.
Patent GB-708362-A (GB)
Title: Optical cement
IPC: C08L93/00
Filed: 1951-11-08
Abstract: An optical cement comprises a solventless methacrylic ester cement together with an amount of Canada balsam which is between 2 and 30 per cent. of the mixture.  The methacrylic ester constituent may be methyl, butyl, or cyclohexyl methacrylate and may contain a catalyst such as benzoyl peroxide, and an inhibitor such as hydroquinone. Also present may be cross-linking agents such as methacrylic anhydride, unsaturated alkyd resins, or partially polymerized drying oils.  The methacrylic ester may be used either in partially polymerized form or as a mixture of monomer and polymer.  The Canada balsam used is preferably of the hard type which has been heated to free it from volatile components.  The cement is hardened by heating, part of the Canada balsam reacting during this process.
Patent GB-652505-A (GB)
Title: Improvements in apparatus for holding workpieces to be riveted
IPC: B21J15/38
Filed: 1948-10-09
Abstract: 652,505. Riveting. TATE LOCOMOTIVE ENGINEERING CO., Ltd., and AMES, W. H. Oct. 9, 1948, No. 26346. Convention date, March 24. [Class 83 (iv)] In a device for manipulating locomotive boilers during riveting by jaw-type riveters, the work is suspended by a flexible swivelling member from a vertically-adjustable bracket. The top of the flexible member comprises a shackle C for engagement by the hook of a crane with which the work is carried to the bracket N and which rests by an integral flange G3 on a thrust-race H<SP>1</SP> in a spherical seat-pad H the brackets N having a spherical seat N<SP>2</SP> therefor and a slot to permit insertion of the hook C. The lower end of the flexible member comprises a beam A to which the work A<SP>1</SP> is bolted and which is riveted to a shackle B. The intermediate portion of the member comprises a member E having slotted ends E<SP>1</SP> containing antifriction seatings D<SP>2</SP> for hemispherical pieces F and D screwed to the crane hook C and shackle B respectively. The work may be rotated by an electric motor M on the bracket N through bevel gears K, pinion J<SP>1</SP> and spur gear J on the lower part of the hook C and may be raised and lowered by a hydraulic cylinder P or equivalent mechanical or electrical device to which the bracket N is attached.
Patent GB-1388443-A (GB)
Title: Selective reduction of 9,15-dioxoprostanoic acids
IPC: C07C405/00
Filed: 1972-06-06
Abstract: 1388443 Prostanoic acids G D SEARLE & CO 6 June 1972 [11 June 1971] 26351/72 Heading C2C [Also in Division C3] The invention comprises the reduction, using metallic cyanoborohydrides, of protonoic acids containing aliphatic oxo groups and alicyclic oxo groups to prostanoic acids containing aliphatic hydroxy groups and alicyclic oxo groups or of prostanoic acids containing an alicyclic oxo group to prostanoic acids containing alicyclic hydroxy groups and the novel compound, 3 - hydroxy - 2 - hydroxymethyl - 5 - oxo - 1- cyclopentene - 1 - heptanoic acid, which is obtained by reducing 2-formyl-3-hydroxy-5- oxo-1-cyclopentene-1-heptanoic acid with metallic cyanoborohydrides. The following starting materials are prepared: 2 - formyl - 3 - hydroxy - 5 - oxocyclopentaneheptanoic acid, dl-11α (and 11#)-hydroxy- 9,15 - dioxoprost - trans - 13 - enoic acid, dl- 9,15 - dioxoprosta - 10, trans - 13 - enoic acid, dl - 11α - hydroxy - 9,15 - dioxo - 12 - epiprost - trans - 13 - enoic acid and 11 - hydroxy- 14 - methyl - 9,15 - dioxo - prosta - 8(12), trans- 13-enoic acid. Reference has been directed by the Comptroller to Specifications 1,097,533, 1,120,243, 1,198,071, 1,260,828 and 1,292,661.