baber/WOPTO huggingface dataset:
Patent GB-1350439-A (GB)
Title: Circuit arrangement for generating a variable magnetic field
IPC: H04N3/233
Filed: 1971-04-19
Abstract: 1350439 Cathode-ray tube circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [7 March 1970] 23154/71 Heading H4T A dynamic convergence circuit for a multibeam C.R.T. is arranged to generate an adjustable amplitude parabolic current in a coil to produce a corresponding magnetic field, the coil being wound on of magnetic material together with an auxiliary coil which is fed with a direct current proportional to the peak-to-peak amplitude of the parabolic current by means of a potentiometer circuit, to clamp an extreme value of the magnetic field at a predetermined value. As shown, Fig. 1, a parabolic voltage at line frequency, e.g. from the S-correction capacitor, is differentiated by capacitor 5 and resistor 6 to produce a sawtooth voltage, an adjustable proportion of which is applied to the inputs of amplifiers 20 and 20<SP>1</SP> by means of amplitude control 7 and balance control 8. The outputs of the amplifiers are applied to " red " convergence coil 19 and " green " convergence coil 19<SP>1</SP> respectively in which the voltages are integrated to produce parabolic currents. Line frequency pulses are applied to terminal 21, the coils 19, 19<SP>1</SP> integrating these pulses to produce a sawtooth current in the coils. The value of this current is arranged to be that required by C.R.T.'s and circuit components of nominal value and fine adjustments are produced by pulses obtained from a winding 2 of the line frequency transformer and applied to the inputs of the amplifiers 20 and 20<SP>1</SP>. The convergence waveform is required to have a zero value at the centre of each line. Since the coil currents are fed through capacitors their mean values are automatically held at zero so that the sawtooth components are suitable without further correction. The parabolic currents however have extreme values at the centre of each line and this is corrected by means of direct currents passed through auxiliary coils 22, 22<SP>1</SP>, the magnitudes of these currents being adjusted by potentiometers 25, 26 ganged to potentiometers 7, 8 respectively so that they vary with the amplitudes of the parabolic currents in coils 19, 19<SP>1</SP>. The coils 22, 22<SP>1</SP> are mounted on the same magnetic core as coils 19, 19<SP>1</SP> respectively and may comprise the vertical convergence coils. The correct proportioning of the compensating circuit values is discussed. In a second embodiment, Fig. 3a (not shown), a sawtooth voltage is applied to the input of an amplifier feeding a convergence coil in which is produced the parabolic current, through a single potentiometer which also forms part of a correction circuit feeding a direct current to a separate auxiliary coil. In a modification, Fig. 3b (not shown), a transistor is used to drive the auxiliary coil. The transistor and auxiliary coil may form part of the vertical convergence circuit.
Patent GB-1473186-A (GB)
Title: Compositions for the simultaneous dry cleaning and hydrophobing of ready-made textile materials and the production and use of such compositions
IPC: D06M13/184
Filed: 1974-05-23
Abstract: 1473186 Textile treating composition CHEMISCHE FABRIK PFERSEE GmbH 23 May 1974 [30 May 1973 20 Sept 1973] 23198/74 Heading D1P Ready made textiles are simultaneously chemically cleaned and rendered hydrophobic using a composition having a good ability to pass through filters and comprising (a) the reaction product of an aluminium, zirconium and/or titanium monohydric aliphatic alcoholate (2-4C) with a branched-chain carboxylic acid (8-12C) optionally in admixture with a straight-chain carboxylic acid (at least 12C), (b) a complex-forming, volatile, organic compound as stabiliser for the reaction product, and (c) a water repellant. The composition may further contain a chemical cleaning solvent. The preferred alcoholates are the butylate and isobutylates of aluminium and the butylates and propylates of zirconium and/or titanium. The branched-chain carboxylic acids may be synthetic mixtures (9-11C) containing 10% secondary and 90% tertiary acids, or may be a pure acid e.g. 2-ethylhexanoic acid. The optional straight-chain acid may be saturated or unsaturated. The complex forming stabiliser may be diethyltartrate, acetyl acetone, ethyl aceto acetate, diethyl malanate an oxime or a nitrile. The water repellant compound may be a paraffin oil and/or wax, or a polysiloxane. The compositions may be formulated without the cleaning solvent as a paste or solid, or with the solvent, in a concentration of more than 30%, for treatment of textiles e.g. of natural or regenerated cellulose fibres and wool alone or in combination with polyesters, polyamides or polyacrylonitriles, in a dry cleaning machine, optionally together with conventional cleaning intensifiers. A small proportion (up to 6% owf) of water may also be present. There is no final rinse. An organic solvent solution of an oleophobic agent may be sprayed on the treated textile. Excessive dirt may be removed using a pre-wash bath. The composition may be prepared by reacting the alcoholate and fatty acid optionally under vacuum, for 10-30 minutes at 50-170‹C, the remaining components being added before and or after the reaction.
Patent GB-277029-A (GB)
Title: Resonance chamber for pianos
IPC: G10C3/06
Filed: 1927-09-05
Abstract: 277,029. Weihenmeyer, F., and Lieth, A. J. Sept. 6, 1926, [Convention date]. Soundboards and sound-intensifiers.-A soundboard f has associated therewith a resonance chamber formed by front and rear walls b, c, respectively, and vertical partitions d, l. The wall b is formed with apertures a and the reson. ance chamber is open at the top. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the construction shown in Fig. 6 (Cancelled), in which the frame m supporting the soundboard (not shown) is formed with vertical channels o leading to an opening k. The arched wall c is secured to the frame 'by segment-shaped ribs q. This subjectmatter does not appear in the Specification as accerted.
Patent GB-282498-A (GB)
Title: Improvements in trial frames for sight-testing
IPC: A61B3/11
Filed: 1926-09-22
Abstract: 282,498. Brown, S. C. Sept. 22, 1926. Sight-testing apparatus. - Trial frames for sight testing are constructed so that they rest on the wall or side of the nose or the orbit of the eye and are provided with means, preferably in the form of adjustable nose pads, whereby the lens cells may be adjusted with respect to the nose. The pads a are mounted on rods b screwed through bearings c' on the lens cells d and operated by knobs b<1>. Tie rods b<3> are also fitted to prevent twisting of the pads a. The distance between the lens cells d is independently adjusted by a pinion e and rack f as shown.
Patent GB-264761-A (GB)
Title: Improvements in air compressors for tyres and like purposes
IPC: B60C23/00
Filed: 1926-09-23
Abstract: 264,761. Williams, H. G., and James, R. R. Sept. 23, 1926. Separating oil from gases.-A breather passage 7 is formed in the crank-shaft of a compressor, the piston of which is driven by a pin 4 through a slipper 5, and oil is prevented from escaping by centrifugal action in an oblique passage 8.
Patent GB-331718-A (GB)
Title: Improvements in air filters for internal combustion engines
IPC: F02M35/16
Filed: 1929-07-31
Abstract: 331,718. Austin, Sir H. July 31, 1929. Filtering.-An air filter for an internal-combustion er.gine comprises a sheet F of felt or other thick fabric secured by its edges to the under surface of a tank A or other large under surface so that it hangs or is held apart from the surface to form a chamber in communication with the engine suction. The fuel tank A is carried by brackets D of the radiator C connected with the cylinder B and at its other end by a cross bearer E. The felt is folded at its edges, which are clamped by a frame G with bolts to the bottom of the tank. Transverse and longitudinal strips b, c limit the sagging of the fabric. The rear of the frame is curved down to space the fabric away from the tank and to engage a pressing J leading to the induction pipe M. The fabric may be pleated; distancing strips may prevent its collapse against the tank. The filter may be cleaned by causing back-firing, or it may be removed for cleaning.
Patent GB-952071-A (GB)
Title: Improvements in reinforced wire brushes
IPC: A46B13/00
Filed: 1960-07-05
Abstract: 952,071. Brushes. GENERAL TIRE & RUBBER CO. July 5, 1960 [Aug. 26, 1959], No. 23519/60. Heading A4K. [Also in Division B5] A reinforced wire brush 10 comprises a plurality of wire bristles 4 fixed to and extending from a support member, and a solid rubbery material substantially completely surrounding and reinforcing the sides of the bristles and filling the spaces between the portions of the bristles spaced from the support member, the rubbery material being a solid linear polyurethane formed by reacting a linear hydroxy-terminated polyester or polyether with a molecular weight of at least 500 with an organic polyisocyanate having 2 or 3 functional isocyanate groups. As shown, the hub portion 1 of the brush has a shaft-receiving opening and a series of locking rings 3 for retaining the bristles on the hub. Specification 896,198 and U.S.A. Specification 3,028,353 are referred to.
Patent GB-1306326-A (GB)
IPC: G03G15/26
Filed: 1971-04-19
Abstract: 1306326 Electrostatic printing; optical projections LA CELLOPHANE 19 April 1971 [10 March 1970] 23644/71 Headings G2A and G2H A projection system including lamp 2, condenser 3 and objective 4 produces an enlarged image of micro-photograph 5 on either a screen 8 or an electro-photographic reproducer's exposure plate 10 via mirror 6 and pivotable mirror 7. The projection system produces a constant size image on the screen regardless of the film size and this may be achieved by use of an appropriately shaped condenser element, a number of such elements being slidably mounted for easy location in the projection axis. Constant exposure times in the electro-photographic reproducer may be achieved by varying the illumination provided by the lamp 2 by means of a switching diode and thyristor. As shown in Fig.3 the reproducer includes a supply reel of paper 21, a charge loading device 26, a perforated belt 30 passing over suction chamber 32 in the region of the exposure plate 10, a cutting device 34 permitting only the required length of paper i.e. sufficient to cover the plate 10, to advance, developer 35 and exit tray 36. The reproducer can be controlled to produce a given number of copies of any projected image.
Patent GB-733288-A (GB)
Title: Wooden girder with booms and lattice
IPC: E04C3/16
Filed: 1953-08-28
Abstract: 733,288. Wooden girders. GERLACH, H. Aug. 28, 1953 [Aug. 30, 1952], No. 23763/53. Class 20 (4). The compression and tension braces 1, 2 of a lattice structure connecting the upper and lower booms 4, 9 of a wooden girder are arranged in the same plane and are joined to each other at 5 in such a manner that the vertical and transverse components V, S, Fig. 3, of the compression and tensile forces induced in the braces 1, 2, intersect at the centres 3 of the joints and cancel each other, no secondary stresses being produced in the booms so that only the horizontal shearing force H need be taken into account when the truss is designed. The adjacent ends of the braces, joined by wedge-shaped tenons 7 which are glued into corresponding grooves 6, are secured by nails 8 to the booms 4, 9, each of which comprises two members (see the upper members 41, 4<SP>2</SP>, Fig. 5). In a modification, the booms are each composed of three members between which two lattice structures are arranged. The girder may be made to have the shape of a trapezium, triangle or arch.
Patent GB-615817-A (GB)
Title: Method and device for regulating, recording and indicating respectively the degree of dryness of fibre sheets
IPC: G01N25/56
Filed: 1946-08-10
Abstract: 615,817. Drying webs. STRATVEIT, N. N. S., and SCHIE, A. J. Aug. 10, 1946, No. 23765. Convention date, Aug. 11, 1945. Drawings to Specification. [Class 34(i)] The decrease in temperature of a web between two stationary located points in the last part of a drying section, is used to regulate, indicate or record the degree of dryness of the web. When the drying is performed by a series of drying cylinders the two points are between succeeding cylinders and adjacent thereto. The electrical impulse from thermo-elements placed at these points may operate measuring apparatus or regulate steam-inlet valves or the like.
Patent GB-988322-A (GB)
Title: Improvements in or relating to leaf rolling apparatus
IPC: A23F3/12
Filed: 1961-07-01
Abstract: 988,322. Tea leaf rolling. H, C. ANDREWS. July 1, 1961, No. 23828/61. Heading A2B. In a leaf rolling machine, the leaf is fed into the gap between two contra-rotating, circular, flat, horizontal plates 1, 9 having roughened or serrated surfaces facing each other, at least one of which, and preferably both, is provided with sliding, i.e. relatively smooth areas where build-up of the rolled leaf occurs. As shown, Fig. 1, leaf is fed into a hopper 18 and by means of a feed screw 16 working in a central aperture in the plate 9, which is extended upwardly to form a cylinder, is pressed on to a normally freely-rotatable stepped cone 7 on a spindle projecting upwardly through a central aperture in plate 1 the cone being set in motion, i.e. rotating in a direction opposite to that of plate 9, which, in conjunction with eccentric motion imparted to plate 1 by means of three equidistant cranks 4 pivotally connected to an annular member 2 supporting plate 1 by springs 3, causes the leaf to be forced between the plates 1, 9 where it is acted upon by alternate concentric projections, e.g. shaped as ratchet teeth seen in cross-section, and smooth zones, Figs. 3 and 4 (not shown). The processed leaf then passes outwardly through a gap between a stationary ring 20 in sliding contact with plate 1 and an adjustable annular battened edge 24 to plate 9, to enter a trough formed by a wall 22 on the ring 20 which has discharge openings through which the leaf is pushed by peripherally mounted paddles on the plate 9. The gap between plates 1, 9 is adjustable from a few thousandths of an inch to one inch by a set screw 28 on the lower plate, and the cranks 4 on the annular member 2 of plate 1 are rotated by a motor 5 through gearing 6. Plate 9 of smaller diameter to plate 1 is suspended on faces or ball races 10 from a supporting ring 11 which has a gearing ring 15 driven by a shaft from a motor 14. For cleaning, the upper plate 9 and parts of the machine frame can be raised by operating a hand-wheel 26.
Patent GB-1316594-A (GB)
Title: Vinyl phosphates and phosphonates process for their preparation and pesticidal preparations containing them
IPC: C07F9/653
Filed: 1970-05-18
Abstract: 1316594 Pesticides containing vinyl phosphates and phosphonates CIBA-GEIGY AG 18 May 1970 [19 May 1969 22 July 1969] 23865/70 Heading A5E [Also in Division C2] Compounds of formula I: where (a) Y is chlorine, X is -C(O)- or -SO 2 -, R 1  is C 1-4  alkyl or alkoxy, R 2  is C 1-4  alkyl, R 3  is C 1-4  alkyl or is phenyl which may be substituted by one or more halogen atoms or C 1-4  alkyl groups and R 4  is C 1-4  alkyl or is phenyl which may be substituted by one or more halogen atoms, C 1-4  alkyl groups or nitro groups, or when X is -C(O)-, R 4  may be hydrogen, provided that when R 3  is alkyl, R 4  is not hydrogen or alkyl, or, when X is -C(O)-, R 3  and R 4  together with X and the adjacent nitrogen atom form a 5 to 7 membered heterocyclic ring which contains at least one further -C(O)- group or which is fused to a cyclohexyl or benzene ring, or (b) Y is hydrogen, X, R 1  and R 2  are as defined above, R 3  is C 1-4  alkyl, C 3-6  cycloalkyl or phenyl which may be substituted by one or more halogen atoms and R 4  is C 1-4  alkyl, C 3-6  cycloalkyl or phenyl which may be substituted by one or more halogen atoms or alkyl groups, or when X is -C(O)-, R 4  is hydrogen or R 3  and R 4  together with X and the adjacent nitrogen atom form a 5 to 7 membered heterocyclic ring, are used as pesticides, either alone or as the active ingredients in conventional pesticidal compositions, and optionally together with synergistic agents, several of which are specified.
Patent GB-1142627-A (GB)
Title: Improvements relating to printed circuit boards
IPC: H05K3/00
Filed: 1966-05-27
Abstract: 1,142,627. Printed circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 27 May, 1966 [1 June, 1965], No. 23947/66. Heading H1R. In a printed circuit board 1 provided with lines of local weakness, such as perforations 7, to facilitate the division of the board into separate parts 3 ... 6, the printed circuitry on the separate parts is connected together by thin printed wires 8 which cross the rupture lines to form a functionally unitary arrangement, and enlarged, preferably circular, contact areas 9 are provided at each end of each wire 8 on either side of a rupture line. Associated components (not shown) are mounted on the board 1 and the entire circuit is tested before the board is divided. After division, and before or after the mounting of the parts 3 ... 6 in an assembly, connections broken by the severing of wires 8 are restored by bonding conductors between the relevant contact areas 9, which may be apertured. The board 1 is formed by conventional techniques from a metal-clad paper-based insulating laminate and may be double-sided. Instead of lines of perforations, the rupture lines may be delineated by grooves in the boards; and the wires 8 may be weakened at the line or rupture, by scratching or nicking. Figs. 3, 4 (not shown) depict a printed circuit board in which a portion (16) to be removed is defined by a slot (13) and a single line of perforations (7); after division, the two parts (16, 17) of the board are mounted perpendicular to one another on a radio chassis, and are mutually connected by fly leads (12).
Patent GB-639868-A (GB)
Title: Process for the production of porous products from bonded organic matter
IPC: C04B2/10
Filed: 1947-08-29
Abstract: Porous products made by cementing together vegetable chips or fibres, such as wood wool, at their points of contact by a binding agent are prepared by using as binding agent calcination products containing magnesium oxide and calcium carbonate, especially semi-calcined dolomite, in conjunction with magnesia-cement forming solutions, especially magnesium sulphate solution, the calcination product having been produced by a blast-roasting process.  Specifications 258,731, [Class 70], and 639,228 are referred to.
Patent GB-221650-A (GB)
Title: Improvements in or relating to the windscreens of motor road vehicles
IPC: B60J1/04
Filed: 1923-09-27
Abstract: 221,650. Motor Equipments, Ltd., and Ransom, G. H. Sept. 27, 1923. Wind-screens.-In a motor vehicle wind-screen of the kind such as in described in Specification 168,822, comprising two separate sections mounted independently on the sides of the vehicle and adapted to be connected along their inner edges to form a single screen by means of fast'enings c, d at the upper and lower ends of the meeting edges a, b, the lower fastening d is formed of two elements having upwardly and downwardly pointing extremities 3 adapted to ride into and out of retentive engagement with each other. The elements are connected to the screen sections by the shanks 1 and each has a concave portion 2 corresponding to the shape of the extremity of the other element. The upper fastening c is preferably of the kind described in Specification 192,603.
Patent GB-621630-A (GB)
Title: Hydraulic shock absorber
IPC: F16F9/54
Filed: 1946-08-14
Abstract: 621,630. Hydraulic shock-absorbers. FOCHT, N. S. Aug. 14, 1946, No. 24165. Convention date, Oct. 22, 1945. [Class 108 (iii)] In a hydraulic shockabsorber of the kind comprising a piston 11 and cylinder 10, expulsion of liquid from the cylinder into a reservoir c, through a port 26 in a head 14 of the cylinder being controlled by a metering pin 24, which extends through the port and is movable into opening position under liquid pressure in the cylinder against a spring or other control, the metering pin has a piston portion 31 disposed in a well 30 in the head, forming a dash-pot, and a valve 36 is adapted to be opened by pressure of the liquid in the cylinder against spring or other control, to admit liquid from the cylinder into the well on the outer side of the piston portion 32. The reservoir c is formed between the cylinder 10 and an outer tube 12 and is in communication with a lower cylinder space b through ports 23 controlled by a valve 25 and the port 26 controlled by a valve portion 27 on the metering pin 24. A hollow bore 33 in the metering pin 24 contains a plug 36 which is acted on at its inner end by pressure of the chamber b acting through a port 34 in the stem 24, and at its outer end by a spring 39 adjustable by a screw plug 38. In the closed position of the valve 27 (as shown), corresponding to noload conditions, the plug 36 covers a second port 35 in the metering pin 24. On compression due to a normal load the increased pressure in space b acts on the inner end of the metering pin 24 to open the valve 27, thus permitting flow to the reservoir c. Pressure on the plug 36 causes the port 35 to be slightly uncovered and liquid flows from the bore 33 into the well 30 and past a clearance 32 surrounding the piston 31. On increased compression, throttling of liquid through the clearance 32 causes inward displacement of the metering pin 24 to re-close partially the valve 27. The cylinder head 14 comprises a body portion 15 and a superimposed head portion 16. Specifications 593,954 and 621,625 are referred to.
Patent GB-1201205-A (GB)
Title: Improvements in or relating to cable, wire or rope drums, reels or the like
Inventor: HILL JOHN
IPC: B65H75/38
Filed: 1967-07-25
Abstract: 1,201,205. Cable drums. J. HILL. 24 Oct., 1968 [25 July, 1967], No. 24292/67. Heading B8M. A cable, wire or rope drum of the kind comprising either a barrel 10 and a pair of end flanges 19 forming part of a supporting structure for the barrel 10 between which the barrel is rotatable relative to the flanges, or a barrel and a pair of end flanges forming a unitary structure and a pair of spaced wheels constituting the supporting structure between which the unitary structure is rotatable relative to the support, is characterized in that a motor 24 or like prime mover is mounted on the supporting structure for driving transmission means in operative engagement with the barrel or the unitary structure so as to effect rotation of the barrel or unitary structure relative to the support. The motor 24 is pivotable on the stationary flange 19, in the embodiment of Fig. 1, and moves a pinion 22 between an inoperative position and an operative position in which it meshes either with a rack 21 internally of the barrel 10 or with a rack 28 externally of the central shaft 12 of the drum.