baber/WOPTO huggingface dataset:
Patent GB-571877-A (GB)
Title: Improvements in and relating to transformer systems
IPC: H01F29/04
Filed: 1943-03-12
Abstract: 571,877. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. March 12, 1943, No. 4046. Convention date, March 20, 1942. [Class 38 (ii)] In a polyphase transformer with tap-changers adapted to vary both the phase and the magnitude of the secondary voltage, there are two secondary windings for each phase and the windings are serially connected in a closed mesh, the vector voltages of which form a polygon or other figure, the corners of which lie on a circle and a pair of adjacent sides of the polygon have a shape identical with that of the pair on either side. Fig. 1 shows a threephase arrangement with primary windings 7, 8, 9, each of which has two secondary windings such as 7<1> and 7<11>. The secondary windings are arranged as shown with tap-changing switches 10, 11 ... 15. Fig. 3 is a vector diagram for one particular arrangement of the tap-changing switches. The points 4<1>, 5<1>, 6<1> representing the three secondary lines will be equally spaced round the circle and any point on the circle between, say, 4<1> and 5' will give the necessary 120 degrees between the vectors 7<1>, 8<11>. A point has been selected in which the number of turns of winding 7<1> is several times that of winding 8<11>. The number of turns of the other windings must be adjusted to correspond, thereby producing three-angled symmetry. The magnitude of the secondary voltage will depend on the size of the circle and the angle between, say, the phase of the line 4', which is represented by the dotted line proceeding to the centre of the circle, and the phase of line 7 or 7<1> will vary according to the point on the circle selected. The invention may be applied to an autotransformer, Fig. 11 (not shown).
Patent GB-972315-A (GB)
Title: Improvements in transducer systems
IPC: G01L9/00
Filed: 1962-02-02
Abstract: 972,315. Measuring electrically. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Feb. 2, 1962 [Feb. 17, 1961], No. 4100/62. Heading G1N. A system for measuring pressure or displacement consists of an oscillator circuit including a tunnel diode. The frequency of oscillation which is a function of the pressure exerted on the diode is measured by display on a cathode ray tube.
Patent GB-688347-A (GB)
Title: Method of and apparatus for coking coal
IPC: C10B25/06
Filed: 1951-02-20
Abstract: 688,347. Coke ovens. DIDIER-KOGAGHINSELMANN KOKSOFENBAU UND GASVERWERTUNG AKT.-GES. Feb. 20, 1951 [Feb. 20, 1950], No. 4118/51. Class 55 (i). The optimum yield of volatile products from coal carbonised in coke ovens is obtained whatever the shrinking power of the coal used, by maintaining the temperature conditions in the gas collecting space constant by charging and levelling the coal at a height depending on its shrinking power which will always give the same level of the coke mass, the collecting space thus being always at the same distance from the heating flues. The desired temperature is stated to be about 750‹C. To enable the invention to be carried out, the levelling bar 8 on the discharging machine is made adjustable for height and the position of the levelling aperture in the coke oven door 5 is adjusted by raising or lowering a sliding plate 6 which carries the levelling door 9. Alternatively as in Fig. 4, (not shown), the position of the levelling aperture is adjusted by inserting wedge-like members of different sizes in the mouthpiece of the levelling door.
Patent GB-868211-A (GB)
Title: An improved oil fired water heater
IPC: F24H1/16
Filed: 1959-02-06
Abstract: 868,211. Vapour burners. PALMER, H. A., and SMITH, C. D. Feb. 5, 1960 [Feb. 6, 1959], No. 4196/59. Classes 75(1) and 126. A water heater comprises a perforated drum oil burner b detachably secured to the base a<SP>1</SP> of a casing a and a coiled water pipe d through the coils of which the burner can be withdrawn upwardly. The burner has fuel supply pipes b<SP>3</SP> radiating from a ring b<SP>4</SP> clamped by an apertured screw c to a member a<SP>2</SP> secured to the base a<SP>1</SP> and to the end of a fuel supply pipe. The combustion gases are constrained to follow a sinuous path through the water coil d by a rib on the inner surface of the casing and by two vertically spaced discs mounted on a rod extending downwardly along the axis of the water coil from a lid mounted on the top of the casing.
Patent GB-1377332-A (GB)
Title: Pilot-operated relief valve
IPC: F16K17/10
Filed: 1973-01-26
Abstract: 1377332 Fluid-pressure servomotor systems ANDERSON GREENWOOD & CO 26 Jan 1973 [26 Jan 1972] 4199/73 Heading G3P A pilot valve has a port 16 supplying control pressure to a main relief valve from an inlet 14 and a vent 18 controlled by a closing member 80 associated with a diaphragm 70 having a large effective pressure area to give the member 22 a snap action. The snap action is further assisted by a baffle ring 68 which converts kinetic energy in the flowing fluid into a static pressure to assist upward movement of the diaphragm 70 against an adjustable spring-load 24. A back-up plate 32 co-operates with a shoulder 90 to limit this upward movement and the pressure at which the pilot valve again closes is adjusted by a throttle 92 in the vent. The closure member consists of an O-ring assembled in a compressed state between outer and inner members 72, 82 the outer member having a hexagonal outer edge through which pressure fluid may reach the diaphragm 70. In a second embodiment, the valve is made insensitive to pressure changes at the port 18 by providing a second diaphragm in fluid communication with the port, the diaphragm being interposed between the spring and the back-up plate.
Patent GB-825467-A (GB)
Title: Improvements in sight-feed lubricating apparatus
Inventor: HERD JAMES FITCHIE
IPC: F16N13/10
Filed: 1958-02-10
Abstract: 825,467. Reciprocating pumps. HERD, J. F., POUNDER, C. C., and REBBECK, Sir F. C. Feb. 10, 1958, No. 4214/58. Class 102(1). [Also in Group XXXIV] Light feed lubricating apparatus, particularly for use with emulsified lubricating oils, comprises a pump housing 1 which is fitted to a cylinder lubricator oil container 2 and accommodates a reciprocatory differential pump plunger, the larger and smaller diameter pistons 3, 5 of which sweep respectively cylinder spaces 4 and 6. A passage 9 opening below oil level into the container 2 communicates through a non- return valve 10 with the cylinder space 4, the upper end of which communicates through a passage 11 with a non-return valve 12 with an adjustable needle valve 13. The latter controls fluid passing to the lower end of a drip feed pipe 14 which enters the upper part of a sight glass vessel 15. The valve 13 has a spindle 16 which is screw-threaded into a valve casing 17 and has a hand wheel 18 graduated to read in conjunction with a fixed pointer 19, an overflow passage 20 interconnecting the container 2 and the passage 11 through a spring-loaded overflow valve 21. The sight vessel 15 is secured over a passage 22 leading to the cylinder space 6 which also communicates, through non-return delivery valves 23, 24, with an outlet 25. When the differential pump plunger 3, 5 is retracted by a spring 8, oil is drawn from the container 2 through the passage 9, and past the valve 10, to enter the space 4. At the same time the smaller diameter piston 5 uncovers the passage 22 so that oil flows into the space 6. When the cam 7 pushes the pump plunger forward the piston 5 forces oil from the pump chamber 6 through the valves 23, 24 to the distribution opening 25 and also closes the passage 22. The larger diameter piston 3 forces oil in the space 4 through the passage 11, the non-return valve 12, and the regulating valve 13 and into the sight feed vessel 15 through the drip pipe 14. The differential pump plunger may be operated by a normally-operated lever or, by lever-andratchet mechanism.
Patent GB-607755-A (GB)
Title: A process for the manufacture of moulded synthetic resin articles
IPC: B29C48/03
Filed: 1946-02-11
Abstract: Moulded articles are prepared from compositions consisting wholly or mainly of polymethyl methacrylate and a copolymer of methyl methacrylate with a vinylidene halide.  The process of manufacture is preferably that in which a mixture of monomeric methyl methacrylate and the copolymer is introduced into the mould which is then heated thereby polymerizing the monomer.  An example describes a copolymer of methyl methacrylate with vinylidene chloride, prepared in emulsion, which is ground, mixed with colouring matter and benzoyl peroxide and made into a paste with monomeric methyl methacrylic which is then moulded (see Group V). The articles, such as dentures, may finally be ground or polished.ALSO:Dentures are moulded from compositions consisting of monomeric methyl methacrylate and a copolymer of methyl methacrylate with a vinylidene halide.  The mixture is worked into a mass containing a little colouring matter and benzoyl peroxide and introduced into a plaster dental mould the surface of which has been treated with waterglass solution.  The mould is closed and pressed and excess filling is removed on opening. The mould is then closed again and heated to 100 DEG C. in water thereby polymerizing the monomer and forming the article which may finally be ground and polished.
Patent GB-1465501-A (GB)
Title: Prosthesis
IPC: A61L27/30
Filed: 1974-01-30
Abstract: 1465501 Making bone implants COMPTOIRLYON-ALEMAND-LOUYOT 30 Jan 1974 [31 Jan 1973] 4256/74 Heading B3A [Also in Divisions A5 and C7] A bone implant formed of a single metal which is compatible with bone tissue is made by welding to a core a porous covering formed by welding together perforated foil layers each of a thickness between 0À05 and 0À5 mm. so that the perforations together form passages of which the minimum transverse dimension is 50 Á, the covering having a thickness between 5 and 50% of the maximum dimension of the core, placing the core so covered in a suspension comprising ethyl cellulose, ethylene glycol and particles of a hydride of the same metal as the core and having a maximum transverse dimension less than 10Á, withdrawing the immersed body and removing excess suspension, and vacuum sintering for about two hours. Typically the core is # inch diameter screw-threaded titanium rod which is held in a lathe chuck and the lathe rotated by hand to wind around it a foil of ¢ inch width expanded titanium sheet welding being effected at intervals along lines parallel to the axis of the screw threaded rod. When the expanded foil covering is of the desired thickness the covered core is immersed in a suspension containing titanium hydride particles and vacuum sintering is thereafter effected at 1100 C. Reference is made to the alternative use of tantalum, base alloys of titanium or tantalum, or a chromium-cobalt-molybdenum alloy.
Patent GB-562935-A (GB)
Title: Improvements relating to deckchairs, garden armchairs and the like
IPC: A47C4/30
Filed: 1943-03-16
Abstract: 562,935. Deck chairs &c. CATER, R. B. March 16, 1943, No. 4265. [Class 52 (ii)] A canvas seat for deck chairs, garden armchairs, &c. is detachably mounted on the top rail C by spring hooks D, the top hook F of which passes through holes G in a clip H placed over the rail C, the lower hooks E being placed in holes in the cross-bar A passing through the hem B of the canvas. The bottom end of the canvas could be secured as in Specification 502,659.
Patent GB-248166-A (GB)
Title: Improvements in name plates or the like
IPC: G09F7/08
Filed: 1925-02-17
Abstract: 248,166. Smith & Davis, Ltd., and Davis, F. H. Feb. 17, 1925. Name plates and the like are formed with a back plate on to which letters &c. are slid and secured in position on the back plate and also to a support by means of a surrounding frame member. The back plate 1 has turned over edges 2 forming grooves into which the letters 4 and spacing pieces 8 are slid. or the letters &c. may have turned over edges engaging with the back plate. The ends of the grooves may be bent in to serve as stops for the end letters. A rectangular frame 9 with chamfered edges is arranged so that its inner edge secures the letters and back plate and the frame is fixed to a support by means of screws 6.
Patent GB-746412-A (GB)
Title: Stapling pliers
IPC: B25C5/02
Filed: 1954-02-15
Abstract: 746,412. Stapling pliers. LIGHTNING FASTENERS, Ltd. Feb. 15, 1954 [Feb. 17, 1953], No. 4343/54. Class 89 (3). In a pliers for attaching staple-like end stops to sliding clasp fasteners, the upper jaw 1 is provided with a spring tongue which engages under the cross-bar of the end stop 21 to hold it in position, while the lower jaw 3 is provided with an anvil 15 and a recess 13 to receive the fastener members. The end stop is positioned by shoulders 19 on the tongue 9 and a pin 17 limits the insertion of the fastener members into the pliers. The pliers may be of the pivoted jaw on sliding jaw type.
Patent GB-1320478-A (GB)
Title: Visable recorder with integration channel
IPC: G01N30/86
Filed: 1972-01-31
Abstract: 1320478 Recording apparatus HONEYWELL Inc 31 Jan 1972 [2 Feb 1971] 4362/72 Heading G1J Integrating recording apparatus, in which an integrator 20 is fed with an input signal and, each time its output reaches a predetermined value, is re-set and generates a pulse, comprises a bi-directional counter 30, which counts the pulses, counting alternately upward and downward between its maximum and minimum counts, and recording means 35 recording for each pulse a mark on a uniformly moving record medium at a transverse position corresponding to the count of the counter. As shown, an input signal applied to a terminal 10 feeds an integrating circuit 20 and, each time a threshold detector 24 produces an output signal exceeding a predetermined value, a pulse shaping circuit 25 feeds back a pulse to close a switch 26 across a capacitor 23, thus re-setting the integrating circuit. The pulses from the circuit 25 are also fed to a bi-directional counter, which may be a bi-directional shift register 30, via one or other of two AND gates 31, 32 according to the state of a flip flop 34 which reverses at the maximum and minimum counts of the register 30. The counts from the minimum to the maximum correspond to the positions across a band of the strip 13 of print elements uniformly spaced in a print head 35 and each element is driven by the corresponding count to produce a mark when that count is reached, thus producing the zig-zag trace 36 representing the integral. A single printing element may be used and may be mechanically moved across the band. Marking may be by ink stylus or spark and a trace 14 of the input signal may also be recorded. To facilitate counting the dots or dashes forming the trace 36, the number of counts corresponding to each traverse may be one or more than a multiple of five e.g. 6 or 11.
Patent GB-826017-A (GB)
Title: Improvements in or relating to circuit arrangements including reflex klystrons and reflex klystrons for use therein
IPC: H01J25/24
Filed: 1956-02-13
Abstract: 826,017. Velocity-modulated tubes. TELEFUNKEN G.m.b.H. Feb. 13, 1956 [Feb. 12, 1955], No. 4377/56. Class 39(1). In a reflex klystron the collector 6, 8 closely surrounds the beam entering the resonator so that for a beam perveance such that the ratio of the diameters of the beam leaving and entering the reflectory space is from 1À5 : 1 up to 3 : 1, substantially all the electrons strike the collector. This avoids hysteresis due to multiple electron transits in the resonator the transit time in the reflector space is 1À5#, 3À5# or 5À5# radians. 6 and 8 may be separate electrodes and the aperture in 6 or 8 surrounds the beam as closely as possible. Only the electrons in the centre of the beam can return to the cathode space and to minimise this, the cathode can produce a beam with a smaller current density at the centre, e.g. an annular beam. The beam spread on reflection is due to space charge repulsion which is greater than the focusing effect of the reflector. The diameter of the beam on entry to the reflector space is 1/10 the diameter of the resonator, or less, to decrease the capacitive loading of the resonator by the electron beam, and the tube is tuned electronically. The height of the cylindrical wall of the reflector is “ its diameter.
Patent GB-889147-A (GB)
Title: Improvements relating to electrode structures
Inventor: WATKINS RONALD JOHN
IPC: C25B11/04
Filed: 1959-02-09
Abstract: 889,147. Electrolysis. IMPERIAL CHEMICAL INDUSTRIES Ltd. Feb. 5, 1960 [Feb. 9, 1959], No. 4413/59. Class 41. An electrode for use in electrolysis, e.g. for oxidizing H2SO4 or for producing per compounds, comprises an anodically polarizable metal, i.e. Ti, Nb, Ta, or alloys of Ti with Nb and/or Ta, or Ti-based alloys, which, when made anodic, forms an insulating film of comparable or greater electrical resistance than that formed on Ti under identical conditions, a noble metal of the Pt group in wrought and reticulate form being secured to the surface of the polarizable metal. Pt group metals are Ru, Rh, Pd, Os, In, Pt, and alloys of two or more of these metals, and Pt, Rh or an alloy of Pt, Rh are preferred, this metal, which may be a mesh or perforated foil, being spot-welded to the polarizable metal, which may be porous, e.g. being compacted Ti powder, and may have a Cu core. Specification 877,901 is referred to.
Patent GB-1489071-A (GB)
Title: Shoe upper conforming machines
IPC: B05C5/00
Filed: 1974-01-31
Abstract: 1489071 Coating apparatus BRITISH UNITED SHOE MACHINERY CO Ltd 30 Jan 1975 [31 Jan 1974] 04455/74 Heading B2L In apparatus for spreading adhesive on a shoe insole and wiping the uppers the adhesive nozzles 20 are moved towards the insole and pushed apart to an extent determined by a stop. The apparatus is generally similar to that of Specification 1476431 and comprises nozzle carriers 22 swung sideways about axle 24 by a piston and cylinder arrangement 52. The nozzles are lowered on arms 26 by a piston and cylinder arrangement 30 when the nozzles are lowered and swung apart a piston rod (136 Fig. 3 not shown) is projected from arrangement 134. It strikes a plunger (140) of a fixed abutment (143) so limiting the nozzle spacing to the narrow width of the insole shank. Pressure in arrangements 52, 134 is thus relieved so that counterweights 150 hold nozzle guides 86 against the edge of the insole during subsequent relative movement.
Patent GB-696600-A (GB)
Title: Suspension means for endless track vehicles
IPC: B60G21/05
Filed: 1951-02-23
Abstract: 696,600. Endless-track vehicles. ACIERIES DU NORD. Feb. 23, 1951 [Feb. 27, 1950], No. 4484/51 Class 79 (1) An endless track vehicle has a pair of track frames rotatable about the driving axle, and a longitudinally disposed suspension spring on each side having one end pivotally secured to the body and the other end bearing on the track frame. The two pivots of the suspension springs may be interconnected so that the track frames are constrained to move in opposite directions, and a guiding device may be provided between each track frame and the vehicle body to restrain the frame to move in a vertical plane only. As shown in Fig. 1 a bulldozer is fitted with endlesstrack frames 4 pivoted to the body about the axis of the track-driving sprockets. The frames are sprung by laminated springs 1 extending longitudinally, see also Fig. 2. The front end of each spring bears on a yoke 6 fixed to the track frame, and the rear end is clamped to a transverse axle 2 or 3. The axles are interconnected at each end so that they, and hence the track frames, are constrained to rotate in opposite directions. Each interconnection, Fig. 5, comprises camshaped members 9, 10 fixed to the axle 2, 3 and formed with shoulders 11, 12. A link 13 is pivoted to member 9 so that one end thereof is held in contact with shoulder 11, whilst a spring-loaded plunger 14 keeps the other end in contact with shoulder 12, so that a rotation of axle 2 in one direction results in a rotation of axle 2 in the opposite direction. To maintain the track frames 4 in their correct paths, a guiding device shown in Fig. 7 may be used. The track frame 4 has pivoted thereto an arm 21 which upon vertical movements of frame 4 slides through the collar 22 whose stem 23 is pivotally mounted on the vehicle body.
Patent GB-179645-A (GB)
Title: Improvements in or relating to apparatus for the distillation and cracking of petroleum oils
IPC: C10G9/36
Filed: 1921-02-08
Abstract: 179,645. Gartlan, S. L., and Gooderham, A. E. Feb. 8, 1921. Drawings to Specification. Hydrocarbons, distilling; hydrocarbons, cracking.- The apparatus is identical with that described in Specification 179,644 in connection with a process of distilling and cracking hydrocarbon oils.
Patent GB-139168-A (GB)
Title: Improvements in or relating to the purification of liquors containing phenoloid bodies
IPC: C02F1/28
Filed: 1920-02-14
Abstract: 139,168. Koppers Co., (Assignees of Basore, C. A.). Feb. 15, 1919, [Convention date]. Treating-materials.-Waste liquors containing phenoloid bodies, e.g. waste liquors from ammonia stills, are filtered through animal charcoal. The charcoal is revivified for re-use by heating it in a non-oxidizing atmosphere to a temperature of about 650‹ C. Preliminary treatment of the waste liquor may include aeration, separation of solids by settling, filtration through slag or other inorganic substance, which may contain iron oxide, and treatment with ferrous and cupric sulphate to remove cyanogen compounds. The liquor may be passed finally through a filter of earth.
Patent GB-143621-A (GB)
Title: Improvements in or relating to valves
IPC: F16K31/56
Filed: 1919-02-24
Abstract: 143,621. Bolotoff, S. V. de. Feb. 24, 1919. Lift valves; piston and tubular valves; actuating. -A lift valve DV, guided in its opening and closing movements b y members W, B, is operated by a handle P, crank 1, and link 2, the arrangement being such that, when the handle is moved into engagement with either of the stops S<1>, S<2> to close or open the valve respectively, the links 1, 2 form a toggle which is. in both cases, on the same side of the centre line XY. The valve is thus locked in the open and closed positions. The valve is arranged to be closed as soon as the links 1, 2 coincide with the centre line XY, and to prevent the valve from opening by the further movement of the handle as it is moved into engagement with a stop S<1>, an elastic ring OR is provided between the valve and its seating. In a modification, the link 2 is in two parts with an interposed spring, and this device may be used in place of, or in combination with, the elastic ring OR. The application of the operating-toggle to a piston valve is also described.
Patent GB-967560-A (GB)
Title: Improvements in or relating to peat
IPC: C05F11/02
Filed: 1962-02-07
Abstract: Granules or pellets of fibrous humus material, e.g. peat, brown coal or the like, which may be used as a fertilizer per se or which may be sprayed, or dusted, with materials promoting plant growth, are formed by the combined action of compressive and shear forces, which forces split the peat fibres and break the peat down into fine fibrous material. The peat is extruded through the perforations in two hollow externally co-operating toothed rollers, cut into pellets by knives disposed within the rollers, and subsequently dried if required.
Patent GB-1044432-A (GB)
Title: Improvements relating to a convertible bed or divan
IPC: A47C17/13
Filed: 1961-11-29
Abstract: 1,044,432. Convertible beds. WILHELM SCHREIER. Nov. 29, 1962 [Nov. 29, 1961], No. 4706/65. Divided out of 1,044,431. Heading A4J. A bed or divan which is convertible from a single to a double bed (as shown) by a 50% increase in width comprises a mattress supporting frame formed by two slidable frames 18, 19 each of which is self supporting on castored legs 33, 39 and 34, 40 in both the single and double bed positions. The rectangular frames 18, 19 comprise respectively parallel side members 20, 29 and 21, 30 interconnected by spaced slots 22, 24 &c. and 23, 25 &c. and head 27, 28 and foot boards, the slats of the respective frames being interdigitated.