baber/WOPTO huggingface dataset:
Patent GB-795029-A (GB)
Title: Improvements in or relating to refrigerated cabinets
Inventor: WALLENBROCK RALPH EUGENE
IPC: F25D17/06
Filed: 1956-06-22
Abstract: 795,029. Refrigerators. WHIRLPOOL - SEEGER CORPORATION. June 22, 1956 No. 19442/56. Class 29 In a refrigerator cabinet closed by a lid 16 and divided into a storage compartment 33 and a smaller freezer compartment 34 by an evaporator 27, air is circulateci directly from compartment 34 through the evaporator to compartment 33 whence it returns to compartment 34 through a duct 41, preferably in the lid. The air is circulated by an electric fan 49 operated by a motor 45. A thermostat switches off the compressor unit and the fan below a certain temperature and the current supply to the fan motor is cut off when the lid is opened. Simultaneously, a light 52 attached to the underside of the lid is switched on. A sump 36 is provided below th freezing chamber to collect defrost water which is allowed to collect in a pan 38 over the motor compressor unit, the heat from which evaporates it.
Patent GB-779835-A (GB)
Title: Filter bodies
Inventor: DICKIE WILLIAM ALEXANDER
IPC: B01J20/22
Filed: 1954-07-02
Abstract: Particles of an organic substitution cellulose derivative, e.g cellulose acetate, are moistened in an enclosed space with a subsequently evaporated solvent so as to be formed into a porous coherent filter body for liquids which do not soften or dissolve the cellulose derivative.  Cellulose acetate-propionate, cellulose butyrate, ethylcellulose or a cellulose ester of a paraffinic monocarboxylic acid containing two to four carbon atoms may be used as the organic substitution cellulose derivative, with which activated charcoal or silica gel may be mixed.  The filter bodies may have densities of from 0,05 to 0,8 gram per cubic centimetre. Cellulose acetate used may have an acetyl value (expressed as acetic acid) between 51 per cent and 62,5 per cent and be plasticized with triacetin.  The particles are preferably substantially uniform in size and shape, e.g. approximately spherical, but irregularly shaped particles formed by grinding cellulose acetate flake and screening it for size may be used; or spun or extruded cellulose acetate fibres, which may be crimped, may be cut up, e.g. to less than four millimetres in length, and/or dry or wet ground or may be beaten to pulp and dried.  In making suitable cellulose acetate, precipitation should be carried out slowly, and methods to this end are described. Any solvents may be used in the main process which are capable of dissolving the particle surfaces at the maximum temperature reached, and they may contain up to 30 per cent of water; examples are dioxane, chloroform, methylene chloride, with or without ethanol or methanol, and acetone with or without ethanol. According to the first Provisional Specification, filter bodies may be formed merely by heating such cellulose acetate particles until melting just commences, e.g. by allowing them to fall through an upward air current in a heated space into a heated tray until they settle to a depth slightly exceeding the length of a cigarette tip, the resulting porous block having cylindrical blanks cut therefrom by a heated hollow punch device; reference is also made to blowing particles by hot air into heated split moulds and to intermittent or continuous extrusion of blanks when using solvents, including some not referred to above, to moisten the particles and, if necessary, produce porosity by sudden evaporation or evolution of gas.
Patent GB-130994-A (GB)
Title: Improvements relating to Pit Props.
Inventor: MUELLER HERMANN
IPC: E21D15/08
Filed: 1919-08-07
Abstract: 130,994. M³ller, H. March 5, 1918, [Convention date]. Mine props.-The prop is in two parts a, b fitting into sockets c of metal, reinforced concrete, &c., hinged together at e, the bottoms of the two sockets having contacting surfaces. The hinge c may be lateral as shown or be arranged centrally or off the centre but within the crosssection of the prop.
Patent GB-294240-A (GB)
Title: Improved method of coating articles of utility
IPC: C09D167/00
Filed: 1928-07-05
Abstract: 294,240. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). July 22, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Varnishes.-Articles of utility such as boilers, ice-machines, &c. are covered with coatings of the reaction products of polyvalent alcohols and polybasic acids with the addition of materials which may catalytically aid the reaction, with or without fillers such as kaolin, quartz, barite, mica-dust, asbestos, &c. As catalytic agents metallic oxides may be employed. The reaction products may be transparent and their elasticity may be increased by the addition of drying oils.
Patent GB-727797-A (GB)
Title: Improvements in and relating to valve amplifiers
Inventor: DANNAHY PATRICK THOMAS HENRY
IPC: H03F1/36
Filed: 1951-08-18
Abstract: 727,797. Valve amplifying circuits. FERGUSON RADIO CORPORATION, Ltd. Aug. 15, 1952 [Aug. 18, 1951], No. 19518/51. Class 40 (6). A negative-feedback amplifier includes a power-output stage comprising two valves V2, V3 having a common cathode circuit and connected to supply an output in push-pull to an output transformer T, the control grid of one valve, V3, being maintained at a substantially constant potential with respect to earth, and a preceding high-gain valve-amplifier stage comprising a valve V1 having a cathode, control grid, screen grid and anode, the input signal being applied to the control grid and the amplified signal at the anode being applied via a direct connection to the control grid of the valve V2, the screen grid of valve V1 being main. tained at a positive potential derived from the common cathode circuit of the power-output stage via a decoupled resistor R5 and thus providing considerable D.C. negative feed-back giving immunity from the effects of varying H.T. voltage and negative feed-back being applied from the secondary of the transformer T to the cathode of the valve V1. In a modification the common cathode circuit is replaced by an arrangement wherein each valve V2 and V3 has a corresponding cathode resistor, the cathodes also being interconnected by a circuit comprising a 1000. microfarad condenser in parallel with a 1000 ohm resistor. In this arrangement the screen grid of valve V is connected to a tapping point on one of the two separate cathode resistors and the resistor R4 is connected between the control grid of valve V3 and the cathode of valve V2. The gain of valve V1 is arranged to be in excess of 150, the anode resistor R2 being of the order of several megohms, and it is stated that the feedback may be of the order of 30 decibels. The Provisional Specification refers to Specification 482,740.
Patent GB-427018-A (GB)
Title: Improvements in or relating to radio receivers and like thermionic valve apparatus
IPC: H03G1/04
Filed: 1933-07-10
Abstract: 427,018. Valve circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Travis, C. ; 354, West Allen's Lane, Philadelphia, U.S.A.) July 10, 1933, No. 19557. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 10, 1934]. [Class 40 (v)] In a diode detector the anode is connected to a more positive point on the load circuit than the cathode to avoid distortion with high percentage modulation. The Figure shows a detector 1 coupled by a resistance R1 to an amplifier 15, a fixed potential being applied to the detector anode when switch 18 is on contact 22 and a potential variable with the input signal when the switch 18 is on contact 21. In the latter case amplified automatic control voltages are obtained between leads 19, 24. The bias of the detector results in a certain amount of " delay," in the automatic volume control since with the bias the change in voltage across R1 is not proportional to input signal strength.
Patent GB-932826-A (GB)
Title: Improvements in or relating to induction motor arrangements
Inventor: HOUSTON DAVID ANDREW
IPC: H02P5/747
Filed: 1961-05-31
Abstract: 932,826. Control of several A.C. motors. GENERAL ELECTRIC CO. Ltd. May 1, 1962 [May 31, 1961], No. 19658/61. Class 38 (3). Equal load-sharing on six induction motors which are mechanically inter-coupled is effected by arranging stator windings 1-6 in three parallel groups, each group comprising two windings in series. Rotor windings 11-16 are similarly arranged in series-parallel formation, the stator windings of the motors whose rotor windings are included in one series-connected pair being themselves included in different groups. In another arrangement, the stator windings are connected in two parallel groups of three, the rotor windings being arranged in three groups of two. The stator windings of the motors whose rotor windings are seriesconnected are again arranged in different groups, Fig. 2 (not shown). In a further embodiment, for three motors, a first stator winding is connected in parallel with a circuit including the other stator windings in series, the first rotor winding being connected in series with a circuit comprising the other rotor windings in parallel, Fig. 3 (not shown). The methods of connection are applicable to both single phase and polyphase arrangements.
Patent GB-147678-A (GB)
Title: Improvements in or relating to grinding machines
IPC: B24B47/04
Filed: 1920-07-08
Abstract: 147,678. Norton Co., (Assignees of Norton, C. H.). July 21, 1914, [Convention date]. Void [Published under Sect. 91 of the Act]. Splash-guards.-In a surface grinding-machine, the grinding-wheel W is carried by a slide mounted in ways in an horizontal convex-topped hood 12. A water-guard plate 50 is provided carried by a rod 51 adjustable in a clamp 52 pivoted to a link 54, which is pivoted at its other end 55 to a part 56 on the hood, the friction of the joints serving to maintain the guard in adjusted position.
Patent GB-312530-A (GB)
Title: Advertising and the like signs with adjustable characters
IPC: G09F7/08
Filed: 1928-07-06
Abstract: 312,530. Berry, H. H., and Markham, W. J. July 6, 1928. Name and number plates.-Letters &c. are attached to a. back plate 1 by means of safety-pin. fastenings, the pins 4 of which engage serrated flanges 2 on the plate 1.
Patent GB-776246-A (GB)
Title: An electrostatic spraying installation for coating articles
IPC: B05B5/16
Filed: 1953-07-29
Abstract: In an electrostatic spraying installation <PICT:0776246/III/1> for coating articles 414 wherein an electric potential difference is established between the article 414 and a spraying container 401 or 402, electrostatic or pneumatic means, e.g. electrodes 416 or a nozzle delivering compressed air, are positioned between the containers 401, 402 and the article 414 to influence the movement of the spray particles.  A pump 409 delivers liquid coating material to the container 401 having a sharp extended edge 403, excess liquid overflowing at 410 to the simillar container 402.  The positive of high voltage source 405 is connected to the containers 401, 402, a conveyer for the article 414 being earthed.  A single container and a single bar-shaped electrode, e.g. at the same potential as the container or supplied with a varying potential may be employed, or the electrode may be circular or rectangular and surround the spray stream.  The electrodes may be insulated from the container, becoming charged from the stream.  Where a single electrode is employed, it may be mounted to reciprocate towards and away from the stream, and where two electrodes are employed they may be positioned at intervals along the stream, or placed opposite each other with the stream between, alternating voltage being supplied to them.  Instead of electrodes, a fan or an annular nozzle surrounding the stream may be used, or a number of nozzles, e.g. grouped at each side of the stream may be emyloyed.  The fan or nozzles may be periodically operated, e.g. groups of nozzles at opposite sides of the stream may be alternately operated.
Patent GB-963599-A (GB)
Title: Pipe and similar supporting brackets
Inventor: FARRAR FRED ROBINSON
IPC: F16L3/10
Filed: 1961-06-02
Abstract: 963,599. Brackets. BOLIVAR STAMPING CO. Ltd. June 1, 1962 [June 2, 1961], No. 19923/61. Heading A4B. A pipe supporting bracket comprises three strip metal parts, one being contoured to form a semi-circular cradle 1 with radial arm 2 welded or permanently fixed at 8 to a wedge-shaped member 3 bent at points 4, 5, 6, and 7 which is built into a wall; the third member shaped to form a semicircular cap 9 with a short radial arm 10 which is screwed at 11 to the other two members. The cap and cradle may engage at notch 13. In another enbodiment, the member 3 is replaced by two bent arms which are screwed to the wall. Member 3 may be ragged.
Patent GB-1150183-A (GB)
Title: An Improved Pile Driving Crane.
Inventor: JOHANSSON PER EVALD
IPC: E02D7/16
Filed: 1967-05-01
Abstract: 1,150,183. Pile driving. P. E. JOHANSSON- 1 May, 1967 [13 May, 1966], No. 20024/67. Heading E1H. A stand 1 for use as part of a pile driving crane comprises a section 6 displaceable telescopically in a section 5 and pile gripping means 19 for raising and keeping the pile in vertical position is attached to the section 6 and comprises a rotatable disc 20 provided with two gripping arms 22, 23 movable to and from each other. In the embodiment described the gripping arms are operated hydraulically and the movable section 6 is operated by cog-wheels 28, 29 driven by motors 26, 27.
Patent GB-772804-A (GB)
Title: Improvements relating to cases for electrical accessories
Inventor: BUTCHER ERIC JAMES
IPC: B65D55/00
Filed: 1954-07-08
Abstract: 772,804. Boxes. TELEPHONE MANUFACTURING CO., Ltd. July 8, 1955 [July 8, 1954], No. 20036/54. Class 18. [Also in Groups XXXVI and XXXVII] An electric accessory box has a pair of fixing strips 6 for the cover (not shown) which strips are arranged loosely in slots 5 in the side or end walls of the box, the strips having tapped holes 8. The box may be wooden, metallic or plastic.
Patent GB-1497881-A (GB)
Title: Process for the electrographic recording of images
IPC: H04N1/29
Filed: 1975-05-13
Abstract: 1497881 Electrostatic image recorder AGFAGEVAERT AG 13 May 1975 [14 May 1974] 20083/75 Heading H4F [Also in Division G2] A halftone electrostatic image is recorded on an insulating substrate I by charging the carrier through a slit 4 in a diaphragm 3 with part of the discharge current produced by a corona discharge assembly 6, the image signal being fed to a linear array of recording electrodes 2 which contact the side of the substrate remote from the slit and make electrical contact with the substrate via a conductive contact liquid supplied to the point of contact. The corona discharge is produced between the needle electrode 6 acting as cathode and the slit diaphragm 3 as anode, with the insulating housing 5 being preferably filled with nitrogen via aperture 8. The recording electrodes 2 comprise wires of noble metals, e.g. platinum, gold or refined steel, within a glass holder which is placed in a vat 12 of contact liquid 14 which is applied to the undersurface of substrate 1 by a roller 15, excess liquid being removed by strippers 16 and 17, a conductive layer of liquid being left which is sufficient for subsequent electrical treatment of the substrate and development thereof with toner particles.
Patent GB-1440168-A (GB)
Title: Polymer dispersions shearing machine
IPC: C08L7/00
Filed: 1974-05-07
Abstract: 1440168 Polymer dispersions and their preparation ROHM GmbH 7 May 1974 [7 May 1973 14 March 1974] 20093/74 Heading C3P A polymer dispersion comprises a continuous organic phase which is not completely miscible with water, and an aqueous phase comprising a water-soluble polymer dissolved in, or swelled with, water, the dispersion containing a waterin-oil emulsifying agent which is soluble in the organic phase and which comprises (a) a vinyl polymer consisting of: (i) 10-50% by weight of at least one vinyl monomer containing a basic nitrogen atom; and (ii) 90-50% by weight of at least one vinyl monomer containing a side chain comprising an alkyl group of at least 6 carbon atoms, or a mixture of such a monomer with less than 50 wt. per cent (of the mixture) of one or more further water-insoluble vinyl comonomers; and, optionally (b) one or more other surface-active compounds; the emulsifying agent having a resulting HLB value below 6 at a pH above 4, and above 8 at a pH below 2. The monomer (i) may comprise a vinylpyridine, a vinylimidazole or an amide or dialkylaminoalkyl ester of acrylic or methacrylic acid. Monomer (ii) may be an ester of acrylic or methacrylic acid and an alkanol having 6 or more carbon atoms. Monomer (ii) may also comprise less than 50 wt. per cent of styrene and/or a C 1 -C 4  ester of acrylic or methacrylic acid. The vinyl polymer, which may have a molecular weight above 10,000, preferably constitutes 2-20 wt. per cent of the organic phase. The water-soluble polymer may have a molecular weight above 1,000,000, and may comprise units of acrylamide, vinylpyrrolidone, vinyl alcohol, a (hydroxyalkyl)-acrylate or -methacrylate, (methacryloxy ethyl)-trimethylammonium chloride, or the sodium salt of vinylsulphonic or styrenesulphonic acid. Preferably the aqueous phase comprises 50-60 wt. per cent of the water-soluble polymer. The organic continuous phase is preferably a mineral oil, forming, e.g. 15-20% by volume of the dispersion. The dispersion, which may have a viscosity of 1000-20,000 cp., may also include a water-soluble acid. The dispersion may be made by dispensing in the organic phase an aqueous solution comprising the appropriate monomers, and polymerizing in the presence of an initiator.
Patent GB-297189-A (GB)
Title: Improvements in fastening or clamping devices for the telescopic joints of extensible stands or the like having triple tubular frames
IPC: F16M11/34
Filed: 1927-07-29
Abstract: 297,189. Bruce, J. S. July 29, 1927. Pedestal and like stands.-The telescopic joints of a multiple tubular extensible frame stand are simultaneously locked or released by adjustment of a single screw disposed transversely of the frame. The Figures show a triple frame wherein the sliding rods b are clamped by adjustment of the screw f which bears on one rod b and carries a nut i which forces pins h into contact with the other rods b. A bracliet d carries the screw and pins and connects the tubular rods a in which the rods b are telescopically mounted.
Patent GB-738085-A (GB)
Title: Improvements in air-cooled four-stroke internal combustion engines with rotary valve control
IPC: F01L7/02
Filed: 1952-08-12
Abstract: 738,085. Rotary valves; cooling cylinders. N.S.U. WERKE AKT.-GES. Aug. 12, 1952 [Aug. 27, 1951], No. 20247/52. Classes 7(2) and 7(6). A rotary valve m housed in the cylinder head of an air-cooled engine with its axis of rotation extending in the direction of the cylinder axis, is is of cylindrical shape at the end adjacent the piston and is insulated with respect to the cylinder head by an air gap a, and the valve is rigid with a shaft o the smallest diameter of which is between 0À5 and 1 times the cylinder diameter. The valve may be cylindrical in shape or, as shown in Fig. 1, it may have a cylindrical lower portion n sealed by piston-type rings e and a hemispherical upper portion m, the valve port being sealed by a loose bush f forced by cylinder pressure against the valve casing. The valve shaft o, mounted in roller bearings d, p, may have a passage g therein through which cooling air is drawn by fan blades c carried by a hub b shrunk on to the valve shaft, the cooling air flowing through the valve body to passages i, j, k in 'the fan which also forces cooling air over the cylinder cooling ribs u. Vanes v on the cylinder head form guide vanes for the fan. The valve is driven by a shaft q and intermediate gear wheel r.
Patent GB-612702-A (GB)
Title: Seats for vehicles
IPC: B60N2/54
Filed: 1946-07-06
Abstract: 612,702. Vehicle seats, spring supports for. METALASTIK, Ltd., TURNER, R. P., and BROWN TRACTORS, Ltd., D. July 6, 1946. No. 20260. [Class 52 (i)] A seat is mounted on a vehicle by means of a pair of links, movable in parallel, with a rubber unit disposed between the links so that in the normal loaded position of the seat the rubber unit is loaded mainly in shear but, with increasing deflection, the manner of loading changes increasingly from shear to compression and the stiffness rate of the rubber therefore increases: The seat 10 is pivoted to a plate 12 by a pivot 11 and adjustably held by a screw 13. The plate 12 has adjustably secured thereto a bracket 14 which is linked to a bracket 15, fixed to the vehicle, by a pair of links 17 between which pair a rubber unit 40, 41 is secured. The links are of channel section with their channels facing one another the channel section being provided with pairs of ears having inner and outer sleeves 24, 23 to which a rubber bush 25 is bonded. The links are mounted in the forks of the brackets 14, 15 by bolts passing through the inner sleeves 24 and forks of the brackets, relative rotation of these sleeves and the forks being prevented by means of dogs so that pivoting of the links 17 is resisted by the tension of the rubber bushes 25. The rubber unit shown comprises two rubber pads 40, 41 preferably bonded to outer plates and an inner plate 42, the outer plates being secured to the webs of the channel through eyes 37, 45 and 38, 46.
Patent GB-220457-A (GB)
Title: Improvements relating to coal cutting and like machines
IPC: E21C31/00
Filed: 1923-08-09
Abstract: 220,457. Cannock Chase Colliery Co., Ltd., and Poynton, H. J. Aug. 9, 1923. Endless-chain machines, of the kind wherein the cutter chain is mounted on a movable radial arm, at one end of the machine, and the hauling gear is arranged at the other end, while the hauling drum is operated mechanically from a driving motor through ratchet and pawl mechanism and the arm is manoeuvred by hand operated ratchet and pawl mechanism, have lever and links connected to the ratchet and pawl device which actuates the haulage drum whereby motion can be transmitted to the arm actuating mechanism from the same source of motion as actuates the hauling mechanism. The arm is moved about its pivot c by a quadrant or wormwheel d engaged by a worm on the spindle e, on which is mounted a lever f replacing the usual hand-lever and carrying a pawl g co-operating with a ratchet h on the spindle e. A link i and lever j, pivoted to a pin k which replaces the lifting bolt, are connected by a link l to a lever m carrying a pawl n, which engages a ratchet o on the hauling drum p. The lever m is operated by a connecting-rod q from a crank disc driven by the main or a subsidiary motor, the throw of which crank disc, or the length of the lever f being variable to vary the rate of operation of the arm. The latter is operated' by putting the pawl n out of action and when motion of the arm is not required the mechanism is disconnected. The lever has a hole j<1> for connecting to the link l when the link i is on the opposite side of the machine, and, according to the Provisional Specification., the usual lifting bolt may serve as fulcrum of the lever j.