baber/WOPTO huggingface dataset:
Patent GB-1512790-A (GB)
Title: Acoustic surface wave devices
IPC: H03H9/145
Filed: 1975-08-22
Abstract: 1512790 Surface wave filters MULLARD Ltd 22 Aug 1975 34931/75 Heading H3U A surface wave band-pass filter comprises first transducing means having one ore more variableoverlap transducers, and second transducing means having two or more interconnected transducers which have responses of uniform amplitude across their apertures and have mutually different amplitude-frequency responses, the combined amplitude-frequency response of the interconnected transducers having a main lobe of band-width substantially equal to that of the first transducing means and side lobes which are attenuated more than the side lobes of a In a first embodiment, Fig. 3, the first transducing means comprises identical variable-overlap output transducers 31, 32, centred on a frequency f 0 , which receive surface waves from respective uniform-overlap input transducers 21, 22 which constitute the second transducing means. Transducers 21, 22 have amplitude-frequency responses centred on slightly different frequencies on either side of f 0  so that a first side lobe of each is suppressed by a second side lobe of the other. More precise cancellation of the side lobes may be achieved by respectively increasing and decreasing the inter-electrode spacings of transducers 21, 22 from their centres towards their ends. In a modification, transducers 21, 22 may be arranged on each side of a single output transducer. The amplitude-frequency responses of input transducers 23, 24 in a second embodiment, Fig. 5, are rendered different (a) by omitting electrodes 5 from one transducer at positions corresponding to existing electrodes in the other input transducer, and (b) by providing in one transducer adjacent short electrodes 5 which do not overlap each other but each overlap an isolated electrode 5<SP>1</SP>. Alternatively adjacent short electrodes may overlap one of two or more isolated electrodes 5' which overlap each other. In modifications the transducers of each transducing means may be connected in series rather than in parallel. Also the aperture of the transducers on one path may differ from that of the transducers on another path.
Patent GB-810386-A (GB)
Title: Polymeric material containing a dispersion of metal particles
IPC: C08K3/08
Filed: 1955-12-06
Abstract: Solid polymeric materials containing dispersions of metal particles are prepared by mixing 1 to 15 per cent of a chloride, sulphate or nitrate of copper, silver or iron with aqueous solutions of polyvinyl alcohol, removing the water by evaporation and heating the remaining solid mixture at 75-200 DEG  C.  The polyvinyl alcohols may be partial hemiacetals, hemiketals, acetals or ketals, or hydrolysed or partially hydrolysed copolymers of vinyl esters, e.g. vinyl acetate, with allyl acetate, isopropenyl acetate, ethylene, styrene, acrylic esters, methacrylic esters, acrylonitrile, methacrylonitrile, maleic anhydride, maleic esters fumaric esters, vinyl chloride, vinylidene chloride and allyl chloride.  Heating may be effected in a reducing atmosphere of burning hydrocarbon gas.  The compositions may be used to form coatings, supported films, e.g. on copper, quartz, glass and plastics, unsupported films, fibres and filaments having electrically conducting, magnetic and optical properties, e.g. for recording and magnetic memory units, printed circuits, mirrors and band-pass filters.  Films containing silver iodide may be prepared by exposing films containing silver to iodine vapour.
Patent GB-1152253-A (GB)
Title: Thread Cutting Device
Inventor: GLOCKER PAUL LEO
IPC: B23G1/02
Filed: 1966-08-05
Abstract: 1,152,253. Thread cutting. P. L. GLOCKER. 5 Aug., 1966 [9 Aug., 1965], No. 35118/66. Headings B3B and B3T. In a lathe incorporating a thread cutting device a thread cutting tool 8 is mounted on the lathe cross slide 6 which in turn is mounted on a longitudinal slide 5 and an auxiliary tool 16 for producing the endmost thread turn on a workpiece is mounted on the cross slide 6 by way of longitudinal and transverse carriages 14 and 10 respectively. Roller followers 28 and 22 mounted on respective carriages 14 and 10 are adapted to contact the respective radial and peripheral faces 30, 23 of a cam member 24 mounted on the lathe spindle 2, the followers 22, 28 being supported on carriages 10 and 14 respectively by lever means 18, 19 and 21 and 27, 29, and the carriages 10 and 14 are spring biased towards the work spindle. In operation, the cutting tool 8 is brought into position by the slides 5 and 6 together with the auxiliary tool 16, the rollers 22, 28 engage the cam faces on the member 24 and hence the position of the auxiliary tool, by the action of carriages 10 and 14, in respect to the cutting tool 8 and the workpiece 4 is varied. When the tool 8 has almost completed a thread on the workpiece the roller followers 22, 28 which have been pre-positioned permit the auxiliary tool to engage the last remaining portion of the thread on the workpiece by moving the carriages in response to the profiles of the cam 24 and the cutting action of the auxiliary tool then produces a predetermined machined lead on the first turn of the thread produced by the tool 8. The action of the cutting tool 8 being effected by cams actuating the main slides 5 and 6 in a known manner. The path followed by the auxiliary tool is determined by the profiles on the cam member 24 and by the proportional pivoting action between the levers 21, 29.
Patent GB-522026-A (GB)
Title: Improvements in or relating to trays for filing cards and similar records
IPC: A47B88/04
Filed: 1938-12-02
Abstract: 522,026. Filing papers; stays for hinged articles. MOORE'S MODERN METHODS, Ltd., and MOORE, B. Dec. 2, 1938, No. 35126. [Class 146 (i)] [Also in Group XXV] The end wall C of a filing tray or drawer is retained vertically by a pivoted locking-member F released by depression of an operating- member E mounted on wall C. Member F is slotted at F<SP>1</SP>, F<SP>2</SP> to engage a pin G on sidewall A1 which is doubled back at A2 to accommodate member F. This member is carried on a cranked rod E and the weight of member F normally retains it in locking-position so that the use of member E as a handle does not release the end wall.
Patent GB-507505-A (GB)
Title: An improved apparatus for the instantaneous preparation of ice-creams or freezing of other comestibles or potable liquids
IPC: A23G9/16
Filed: 1937-12-20
Abstract: 507,505. Ice - cream &c. freezers. GENOVA, A. F. Dec. 20, 1937, No. 35205. [Class 29] In a freezer of the type having a helical rotary scraper in a fixed freezing chamber, the material flows under manual or automatic control of supply from a funnel 15 and pipe 17 directly on to the upper surface of a vertical rotary helical scraper 13-and is thrown on to the wall of the freezing chamber 1, the frozen material being scraped off the wall by the edge of the worm and discharged at the bottom into a receptacle. The edge of the worm is provided with spaced semicircular notches 14, Fig. 3, and the outer surface of the wall of the freezing chamber is provided with annular or helical grooves to give an extended path for the freezing agent, preferably an evaporating refrigerant, which flows upwards in a narrow jacket 4 with enlargements, at 6, 7 and at the outlet 8. The jacket is surrounded by insulation in a further jacket space 10. The supply of material to be frozen is controlled by a manual cock 18 below the funnel 15, or by a float 22, Fig. 2, adapted to obstruct a supply passage 23.
Patent GB-953136-A (GB)
Title: Circuit arrangement for controlling a ferrite core matrix
IPC: G11C19/32
Filed: 1961-09-29
Abstract: 953,136. Magnetic core storage matrices. STANDARD TELEPHONES & CABLES Ltd. Sept. 29, 1961 [Oct. 15, 1960], No. 35244/61. Heading H3B. To compensate for variations in the supply voltage determining the amplitude of read or write pulses, the magnetic cores of a storage matrix are threaded with a common winding to which is fed a compensating current dependent upon the departure of the supply voltage from a standard value. The compensating current is derived from the supply voltage by a transistor circuit, Fig. 2. Terminals U1, U2 are maintained at fixed voltages negative with respect to ground. Terminal U3 is connected to the supply voltage. The emitter voltages of transistors Tr1, Tr2 follow the voltage in the tapping of potentiometer R1, R2, R3, which in turn depends upon U3. The compensating winding is connected across terminals K, U2. The potentiometer is set so that the compensating current is zero when the voltage on U3 is correct. To compensate for temperature change, resistor R1 may be a resistor with a positive temperature coefficient. Alternatively, resistor R3 may have a negative temperature coefficient. In each case, the compensating current increases with temperature.
Patent GB-1184197-A (GB)
Title: Resin Compositions
IPC: C08G8/10
Filed: 1967-08-01
Abstract: 1,184,197. Resin compositions; foundry mixes. ASHLAND OIL & REFINING CO. 1 Aug., 1967 [1 Aug., 1966; 12 July, 1967], No. 35289/67. Headings C3N and C3R. Non-aqueous resin compositions comprise in admixture a resin component, a hardener component, and a curing agent, the hardener being a liquid polyisocyanate containing at least two isocyanate groups, the curing agent being a metal salt which will provide uncomplexed metal ions in the non-aqueous system, and the resin component being an organic solvent solution of a benzylic ether resin which has repeating units of the formula wherein A, B and C are hydrogen, hydrocarbon radicals, oxyhydrocarbon radicals, or halogen, and wherein R<SP>1</SP> is hydrogen or a hydrocarbon radical of 1 to 8 carbon atoms and has been prepared by condensation of a phenol of formula with an aldehyde of the formula R<SP>1</SP>CHO. In a modification the resin component may be a liquid benzylic ether resin of low molecular weight which is not used in organic solvent solution. The compositions are suitably made available as a two-package system comprising the resin component and curing agent in one package and the hardener component in the other package. Exemplified resin components are the condensation products of phenol and paraformaldehyde, the condensation reaction having been carried out in the presence of zinc naphthenate catalyst, which catalyst is retained in the resin and acts as the curing agent in the compositions. Additional catalysts may, however, be added to the resin component. Such catalysts are, for example, lead neodecanoate, zinc neodecanoate, lead naphthenate, manganese naphthenate, zinc naphthenate, calcium naphthenate, stannous octoate, zinc lactate and dibutyl tin dilaurate. The preferred polyisocyanates are aromatic polyisocyanates and particularly 4,4<SP>1</SP>-diphenylmethane diisocyanate, 4,4<SP>1</SP>,4<SP>11</SP> - triphenylmethane triisocyanate and mixtures thereof. It is preferred to employ mixtures of aromatic and polar solvents. The compositions are suitable as binders admixed with sand to form a foundry mix. Apart from sand such mixtures may contain iron oxide, ground flax fibres, wood cereals, pitch, refractory flours and particularly a silane of the formula wherein R<SP>1</SP> is a hydrocarbon radical and preferably an alkyl radical of 1 to 6 carbon atoms and R is an alkyl radical, alkoxy-substituted alkyl radical or alkylamino-substituted alkyl radical in which the alkyl groups have 1 to 6 carbon atoms, to improve the adhesion of the binder to the sand. '
Patent GB-487606-A (GB)
Title: Improvements in the recovery of pure sodium cyanide
IPC: C01C3/10
Filed: 1936-12-24
Abstract: Sodium cyanide is recovered from its ammoniacal aqueous solutions by removing the ammonia from the solution whereby sodium cyanide containing water of crystallization separates, and then recovering the solid sodium cyanide from the mother liquor.  The ammonia may be expelled by passing an inert gas through the solution (e.g. carbon dioxide-free air) and/or by the application of reduced pressure.  The temperature should not exceed 40 DEG  C. during the removal.  The cooling effect of the removal of the ammonia promotes the crystallization and this effect may be increased by the use of heat-insulating vessels.  The NaCN.2H2O may be converted into the anhydrous salt, preferably by treatment with anhydrous or gaseous ammonia which produces a pulp consisting of the anhydrous salt and its saturated ammoniacal aqueous solution which can be separated from each other.  The solution may be returned to the process.
Patent GB-1472164-A (GB)
Title: Printing telegraph machine
IPC: H04L13/08
Filed: 1975-08-27
Abstract: 1472164 Telegraphy: control of printers ITT CREED Ltd 27 Aug 1975 35346/75 Heading H4P A serial printer speed is adjusted in accordance with arrival rate of characters. Incoming characters to a receiver B pass to queue store D and the number of characters increments a reversible counter F. As characters pass to a printer L a down count decrements F. Output of the counter is decoded to provide control signals H-J representing stepped increments of speed, the top speed of printer slightly exceeding maximum arrival rate of characters, whilst lowest rate (excluding zero) causes deceleration followed by acceleration to place the printhead in correct position to print next character as head reaches constant velocity.
Patent GB-1179315-A (GB)
Title: Method of attaching Metal Components to Coated Metal Panels
Inventor: SWEENEY THEODORE JOSEPH
IPC: B23K9/20
Filed: 1967-08-01
Abstract: 1,179,315. Stud welding. WARREN FASTENER CORP. 1 Aug., 1967, No. 35391/67. Heading B3R. [Also in Division E2] A metal stud 10 has at least one projection 16, Fig. 1, so that when it is forced against a painted panel 20, Fig. 2, the paint coating is pierced, and the stud is welded to the panel by a gun 22. An electrical arc is formed between the stud and panel, the stud is withdrawn while maintaining the arc to form a molten pool of metal, and the stud is then pressed home. The stud is covered with a primer and sealer coat 24 which forms a corrosion inhibiting seal 26. When several projections (32), Fig. 3 (not shown), are provided the welding gun accomplishes a rotation of the stud so that the paint is scraped off, Fig. 4 (not shown). An arrangement of a trim strip 50 held on to the panel by an adaptor 52 and a series of the studs, Fig. 6, is described.
Patent GB-780086-A (GB)
Title: Improvements in and relating to electromagnetic wave radiators
IPC: G01S7/02
Filed: 1954-12-08
Abstract: 780,086. Waveguides. FOSTER, K., and THIELE, A. P. C. Nov. 28, 1955 [Dec. 8, 1954], No. 35530/54. Class 40 (8). [Also in Group XL (c)] The invention relates to a horn for radiating circularly polarized wave energy and feed means therefor. The horn 10 is constructed with a rectangular cross-section which differs in shape along its length and is so dimensioned that for wayes of a given wavelength A a wave polarized parallel to one edge of the throat is delayed an odd number of quarter wavelengths relative to a wave polarized perpendicular to that edge. It is preferred to make the throat end of the horn square. To feed the horn with the required orthogonal plane polarized waves feedguide 11 may be coupled by transition guide 12 to circular guide 13 itself coupled to the horn by transition guide 14. The guide 11 may carry an H 11  wave and be orientated so that energy reaches the throat of the horn with its E vector at 45 degrees to the edges and is there resolved into the two waves required. In a different arrangement section 13 may contain a phaseshifter by means of which two H 11  waves polarized at right angles are produced which combine to give a wave polarized with its E vector at 45 degrees to the throat edges as before. Suitable phase shifters consist of a correctly orientated strip of dielectric (Fig. 3a, not shown), a pair of diametrically opposite metal fins (Fig. 4, not shown) or a metal plug 18 against the guide wall (Fig. 5). The central part of the section 13 can also be made elliptical to produce the same effect. The phase shifters are preferably stepped or otherwise shaped to match them to the approaching and outgoing waveguide sections.
Patent GB-909296-A (GB)
Title: Improved seal
IPC: F02F11/00
Filed: 1961-10-04
Abstract: 909,296. Joint-making packing. FORD MOTOR CO. Ltd. Oct. 4, 1961 [Oct. 9, 1960], No. 35733/61. Class 122 (3). Sealing means between the rear main bearing cap 19 and the oil sump 13 and cylinder block 11 of an internal-combustion engine comprises a gasket 28 housed in a peripheral groove 33 in a flange 25 integral with the cap 19 and extending into a recess 15 in a flange 12 of the block 11, the gasket having projections 35 at each end compressed in the recess between the flanges 12 and 25. The gasket has ridges 36 that engage the bottom of the groove 33 and end flanges 30, Fig. 6, each having a recess 31 engaged by a tab portion 34 of the oil sump gasket 32. When the oil sump bolts 14 are tightened the gasket is compressed by the sump flange 38.
Patent GB-901352-A (GB)
Title: New or improved means for connecting bracing and guard rail elements to scaffold tubes
IPC: E04G7/30
Filed: 1957-11-16
Abstract: 901,352. Scaffolding. BURTON, J. Nov. 17, 1958 [Nov. 16, 1957], No. 35771/57. Class 20 (2). [Also in Group I] A brace 10 is secured to a scaffold pole 12 by engagement of a hole 17 in its end with a projection 13 on the pole and is retained by a member 14 pivoted to the projection 13 and adapted to to be aligned therewith when engaging the brace with the projection 13, the member 14 being raised into alignment from a distance by means of the brace 10 after engaging the latter with a hook 16 on the member 14. Specifications 901,346, 901,347 and 901,348 are referred to.
Patent GB-367904-A (GB)
Title: Improvements in or relating to carburetting apparatus for internal combustion engines
IPC: F02M7/12
Filed: 1930-11-28
Abstract: 367,904. Spray carburetters. TONDEUR, R., 25, Denbigh Terrace, and BOWDEN WIRE, Ltd., Bowden Works, Victoria Road, Willesden Junction, both in London. Nov. 28, 1930, No. 35859. [Class 7 (iii).] To minimize variations of fuel supply due to centrifugal and inertia forces, a reserve chamber 2 is provided alongside the main nozzle 11 and opposite the float chamber 1, the passage connecting the float and reserve chambers being restricted at the float-chamber end, as at 9, or at both ends. The reserve chamber communicates at 6 with the atmosphere and, through a tube 23, with a chamber 13 which is in communication through ducts 14, 16 with a pilot nozzle 7. After this nozzle has gone out of action air entering at 21 reaches orifices 17 and prevents the formation of a too rich mixture, and atomizes the fuel issuing from the restricted orifice 9. The restrictions in the communicating passage may be removable and adjustable. The Specification gives suitable capacities of the reserve chamber and diameters of the communicating passage and restrictions therein for certain diameters of choke tube.
Patent GB-394396-A (GB)
Title: Improvements in and relating to reservoir pens
IPC: B43K5/00
Filed: 1931-12-30
Abstract: 394,396. Fountain pens ; pen stands. WELD, H., 13, Arlington Street, London. Dec. 30, 1931, No..35982. [Class 146 (iii).] A reservoir pen comprises a reservoir carried by a standard and connected to the pen proper by a length of flexible tubing, a needle valve or the like being provided to control the flow of ink from the reservoir. The standard is preferably formed by a base a to which is attached a flexible upright b formed by coiled wire ; alternatively a rigid upright may be employed or the flexible upright may be rendered rigid by insertion of lengths of rod. A pin is inserted in the upper end of the standard and carries a reservoir c by means of a band e or other means. The lower end of the reservoir is provided with an outlet tube c<1> which can be closed by a needle valve c<3> movable in the upper closure of the reservoir. A pointer and scale may be provided to enable the flow of ink to be regulated as desired. The tube c<1> is connected by a flexible tube f which may be reinforced, to a tube carried in the handle of the pen, the tube communicating with the duct in the feed-bar. When not in use, the pen is supported in a holder formed on the base. An arm may be attached to the upright to support the tube f and prevent wear. The reservoir may be permanently or detachably mounted on, or be embodied in the standard of a table lamp, or the device may be secured to a writing desk. Duplicate reservoirs and pens for differently coloured inks may be employed, or a number of reservoirs may be connected to a single pen through a multiple way valve.
Patent GB-1025264-A (GB)
Title: Improvements in or relating to ceilings or walls
Inventor: BLOOD PETER BINDON
IPC: B44C7/02
Filed: 1961-10-06
Abstract: 1,025,264. Ceilings walls. ISORA ILLIMINATING CEILINGS Ltd. Jan. 4, 1963 [Oct. 6, 1961], No.36039/61. Heading E1V. A ceiling or wall comprises one or more lengths of flexible sheet material 14 detachably secured along two opposed edges 16 to rigid girders or strips 10. The sheet 14 may be of transparent, translucent or opaque plastic, fabric or rubber and be formed with thickened bands either integral or bonded to the sheet to engage channels 18 formed in the girders 10 suspended by ties 12 from a roof or true ceiling. Where two sheets abut, a capping strip may cover the joint and a radiused cone cover an edge to wall joint. A second girder 12 may be placed above the first girder 12 to provide for spaced sheets where diffused lighting is required.
Patent GB-849649-A (GB)
Title: An improved apparatus for performing arithmetical processes
IPC: G09B19/02
Filed: 1958-11-11
Abstract: 849,649. Educational appliances. MAIDMENT, L. Nov. 11, 1958, No. 36155/58. Class 146(2). An educational appliance for teaching arithmetic comprises a board A having groups A, B, C of numbered positions, and a plurality of elongated counters, e.g. F, G, H, each representing a number and of lengths corresponding to the distances between the numbered positions, so that with the placing of a mathematical process indicator e.g. E, L, M, O, various processes such as, multiplication, Fig. 1, subtraction, Fig. 3, addition and division can be performed. To perform additions a start indicator E is plugged in the top row of group B and the counters representing the numbers to be added together and which may be extendible, are horizontally placed end-on-end along the row with a small " and " or " plus " sign plugged between the counters. A " make " or " equals " sign process indication may terminate the row. Division is performed in a manner similar to the multiplication shown in Fig. 1 except that a division indicator replaces the indicator L and extends into the lower group positions D. A lamp may be illuminated when the number of that position is the answer of the process being performed.
Patent GB-834112-A (GB)
Title: Improvements in and relating to tubular heat exchange elements
IPC: B21C37/15
Filed: 1957-11-20
Abstract: 834,112. Making tubes; rolling. HUET, A. Nov. 20, 1957 [Nov. 26, 1956], No. 36165/57. Classes 83 (2) and 83 (4). [Also in Group XIII] A heat-exchanger tube a, the wall of which is formed into a plurality of hollow fins forming part of the flow cross-section of the tube, is given an increased wall thickness at its more highly stressed zones by a method which comprises heating a preformed tube of uniform wall thickness and then applying pressure, e.g. by means of rollers b in the direction F towards the tube axis to compress the wall at predetermined points and thereby to provide the zones of increased thickness, a mandrel c being positioned in the tube during the compressing operation. Fig. 2 shows such a tube in which the increased thickness is provided at points f and h.