baber/WOPTO huggingface dataset:
Patent GB-1409134-A (GB)
Title: Bearings
IPC: F16C33/50
Filed: 1973-01-25
Abstract: 1409134 Bearings NADELLA and A PITNER 25 Jan 1973 [25 Jan 1972] 3830/73 Heading F2A In a rectilinear motion bearing with recirculating rollers 16, the rollers are guided by their planar end surfaces against planar surfaces 21, 22 on the bearing body, and are retained by means having cylindrical elements 24 adapted to engage in cavities in the ends of the rollers, at least part 27 of the retaining means being adapted to engage in cavities 28 in the bearing body adjacent the planar guide surfaces. The retaining means may be in the form of shackles 23. In a further embodiment (Fig. 5), adjacent rollers are separated by small diameter rollers 31 carried by the retaining means 123. In further embodiments (Figs. 6, 7, not shown), the retaining means are constituted by links which form a chain on each side of the row of rollers. Each cylindrical element then engages in a roller cavity through a hole in the adjacent link. The parts of the retaining means may be produced by moulding.
Patent GB-251374-A (GB)
Title: Improvements in or relating to electrical circuits for wireless telegraphy, telephony or the like
IPC: H03F3/48
Filed: 1925-02-11
Abstract: 251,374. Cleghorn, C. A. Feb. 11, 1925. Thermionic amplifiers and detectors. - Comprises a receiving system employing resistance coupling, in which two or more valves arranged in series function as dual amplifiers. In the arrangement shown the valves V1, V2 are used as dual amplifiers and V3 as a rectifier. The grid of the second valve V2 is connected to the plate of the first valve V1 through a condenser C1 of suitable valve for low as well as high frequencies, a grid leak r being provided. The coupling resistance R may be 80,000 or 100,000 ohms, and the lead l may be connected to the plate, as shown, or to a point in the resistance R separated from the plate by a resistance varying from 1500 to 2500 ohms. The valve V2 is coupled to the rectifier V3 through a transformer P<1>, S' and the plate circuit of the rectifier includes the primary P2 of a low-frequency transformer whereby the audio-frequency output from the valve V3 is fed back into the aerial circuit. The coupling resistance R may be of the carbon type but is preferably of wire wound non-inductively in several sections having opposed directions of winding.
Patent GB-342529-A (GB)
Title: Improvements in shoe trimming machines
IPC: A43D87/00
Filed: 1930-02-05
Abstract: 342,529. Boot-making machines. MATHEY, N. W., 448, Beacon Street, Boston, U.S.A. Feb. 5, 1930, No. 3901. Convention date, May 2 7, 1929. [Class 17 (i).] Trimming.-Relates to heel-breastflap trimming machines of the kind in which the work support and an edge guide engage the breast and outer surface respectively of the heel to determine the line of cut. The cutter oscillates in the direction of the line of cut and a power driven feed device engages the projecting portion of the flap. A stand of usual form carries a driven shaft 2, Fig. 1, having at its end an eccentric pin 5 engaging a slot in a bar 11 pivoted at 12 and carrying a pin 14 on which pivots a knife carrier 15 restrained at its upper end by a fixed pin 17a entering a vertical slot in the carrier. The lower end of the carrier 15 is formed as an edge gauge 17 to engage the side of the heel, and the blade is at an angle to the gauge 17 to produce a bevel. The cutting edge is formed by one side 20, Fig. 4, of a notch in the inclined extension of the part 15, and the under surface of the cutter is curved about the pin 17a to co-operate with the top surface of a breast gauge 26 which is eccentric of its shank 23 to allow adjustment. A feed roll 28 has a bore greater than the shank 23, is driven by a gear 32, and is pressed by a spring 30 to engage the knife. The gear 32 is driven by a universal joint 36 and its shaft is guided in a bearing 34, the gear and feed wheel being pressed toward the work by a spring 37. In a modification, the mechanism is duplicated, the two sides of the flap being trimmed simultaneously, the two mechanisms being separately pivoted to move toward and away from the work and urged to operative position by springs.
Patent GB-241437-A (GB)
Title: Improvements in the manufacture and production of black vat dyestuffs
IPC: C09B67/28
Filed: 1925-02-12
Abstract: Mixtures of dibenzanthrone with nitrodibenzanthrone are prepared for the dyeing of cotton in black shades from the hydrosulphite vat.  The two dyestuffs may be mixed together or dibenzanthrone may be nitrated under conditions which will produce the requisite mixture; for example, dibenzanthrone may be treated with nitric acid of strength insufficient to dissolve the dyestuff, preferably with addition of a substance such as urea or hydrazine which destroys nitrous acid, or it may be treated with the requisite quantity of concentrated nitric acid in a diluent. The pure dibenzanthrone obtained by revatting crude dibenzanthrone or that obtained by alkali fusion of benzanthrone in the presence of aniline or other diluent, may be used; the nitrodibenzanthrone used may be either the crude product obtained according to Specification 1818/05 or that product purified as described in Specification 220,212.  A small addition of a yellowish or other suitable vat dyestuff may be made in order to produce the desired shade of black.  Examples are given of mixtures of dibenzanthrone and nitrodibenzanthrone and of the nitration of dibenzanthrone with diluted nitric acid with addition or not of hydrazine hydrate, or with concentrated nitric acid in nitrobenzene; sulphuric acid may also be used as the diluent.
Patent GB-900241-A (GB)
Title: An improved fitting for pivotally mounting and locking a table or like leg
Inventor: GREENMAN HARRY DAVID
Filed: 1959-02-04
Abstract: 900,241. Hinges. GREENMAN Ltd., S. Feb. 4, 1960 [Feb. 4, 1959], No. 3954/59. Class 65 (2). A fitting for hingedly attaching a leg to an article of furniture such as a table comprises a bracket 1 having parallel quadrantal cheeks 3 with notches 13, 13a at the ends of the cheeks 3, a pivot 5 arranged at the centre of curvature of the cheeks 3 for mounting a leg-plate 6 which has a spring-pressed locking-bar 7 which slides transversely and normally engages one of the notches 13, 13a, the arrangement being such that on pressing the bar 7 by means of its head 7a against the action of an arched blade-spring 8, the bar 7 is released from locking engagement and notches 12 on the bar permit pivotal movement of plate 6 to the other extreme position. The blade-spring 8 has apertures 9 to pass the bar 7 and also receive bent-in guide portions 10 of the side walls of the leg plate. A staple 11 on bar 7 forms a stop to limit displacement of the bar 7 and form an abutment for the spring 8.
Patent GB-185703-A (GB)
Title: Improvements in or relating to taps or valves
IPC: F16K31/524
Filed: 1922-02-10
Abstract: 185,703. Thompson, J. C. Feb. 10, 1922. Lift valzes; actuating-mechanism.-In a lift valve of the type in which the jumper C is lifted from its seat B, by a cranked or eccentric pin H engaging an aperture G in the stem E, the jumper may be moved from the operating-pin, for renewal of the washer D by partly turning it until a normally oblique or diagonal slot M in the stem, a little wider than the diameter of the operating- pin, will slide over the pin.
Patent GB-675538-A (GB)
Title: Improvements in or relating to rotary hydraulic pumps and motors
Inventor: JOHNSON EDWARD HARRY
IPC: F04C2/36
Filed: 1950-02-16
Abstract: 675,538. Rotary pumps and motors. KEELAVITE CO., Ltd. Feb. 7, 1951 [Feb. 16, 1950], No. 4029/50. Class 110(ii) A rotary pump or motor having relatively-moving parts with clearances constituting leakage paths during operation, has an enclosing casing A filled with hydraulic fluid which is maintained full but under controlled pressure, through non - return valves leading to or from the inlet and outlet ports. The figures show a pump or motor of the type described in Specification 551,991 ir which fluid leakages occur due to pistons H<SP>4</SP> passing through recesses J<SP>1</SP> in a rotary abutment J. A controlled flow of fluid is allowed into the casing A at a point S displaced from its highest point and out of the casing from a point R at its highest point. The working chamber C<SP>1</SP>, and abutment chamber D, are enclosed between end members F, E, the abutment J being carried by a shaft J<SP>2</SP> connected by gears K to the rotor shaft H. The abutment contains known pressure-balancing recesses and passages. A valve housing N contains two parallel bores O, P containing valves V, V<SP>1</SP>, W<SP>4</SP>, W<SP>5</SP> arranged as shown. The passages R, S, communicate with the centre portions of the bores and passages T, U lead to inlet and outlet ports L', M<SP>1</SP> respectively. If the pressure in the passage L<SP>1</SP> rises sufficiently, relatively to the pressure in the casing A the valve W<SP>5</SP> is lifted so that fluid will flow through the passage T into the casing through the passage S. If the pressure in the casing A rises unduly one or other of the valves V or V<SP>1</SP> will open to discharge fluid to the passage U or T, whichever is at the lower pressure. Preferably the strengths of the springs W<SP>6</SP> and V<SP>2</SP> are arranged to allow opening of the appropriate two valves almost simultaneously and cause the pressure in the casing A to be approximately half-way between the pressures in the passages L<SP>1</SP>, M<SP>1</SP>.
Patent GB-412676-A (GB)
Title: Improvements in and in the manufacture of inflatable bags for gas or other mains, pipes or such like
IPC: B29C33/76
Filed: 1933-02-10
Abstract: 412,676. Stopping pipes. OWEN, S. F., and SPRING ROD CO., Ltd., Cherry Tree, Blackburn. Feb. 10, 1933, No. 4087. [Class 99 (ii).] An inflatable bag for use as a stopper for gas and other mains, pipes &c. consists of a rubber bag reinforced by pieces of woven twill fabric cut on the bias. In the bag shown the central zone and end areas are covered by wrappings b, b<1>, which are applied after being covered preferably on both faces with rubber solution. The meeting edges of the wrappings are then covered with similarly solutioned bands b<2> and the whole is vulcanized. The inflation tube a<1> may also be reinforced by fabric cut on the bias or by an outer rubber sleeve.
Patent GB-662458-A (GB)
Title: Improvements in chambers or tanks
IPC: E04H7/18
Filed: 1949-02-15
Abstract: 662,458. Filters. NORCON, Ltd., and SNOW, L. G. Oct. 28, 1949. [Feb. 15, 1949] No. 4116/49. Class 46. [Also in Group XXIX] A soakaway or filter chamber, provided with inlet and outlet pipes 8, 9, is built up from a number of superimposed rings formed of rectangular, arcuately curved panels 3 of equal length and located so that the vertical panel edges of the rings align in rows round the chamber, the upper and lower and the vertical edges of each panel having recesses 5, 6 for the reception of grouting material. The vertical recesses are undercut, as shown, and metal rod reinforcement e.g., of sinuous form, placed in each common channel. The panels may be provided with recesses or frogs 4 in their outer faces.
Patent GB-970188-A (GB)
Title: Gas turbine vertical lift engine
Inventor: FREEMAN FREDERICK
IPC: F23R3/52
Filed: 1963-01-31
Abstract: 970,188. Gas turbine plant; jet propulsion plant. ROLLS-ROYCE Ltd. Jan. 31, 1963, No. 4126/63. Headings FIG and F1J. A gas turbine vertical lift engine comprises a centrifugal compressor and a radial inward flow turbine disposed back to back, and combustion equipment having an annular combustion chamber, an' annular inlet passage receiving air flowing in a radially outward direction from the compressor and an annular outlet passage supplying gases in a radially inward direction to the turbine, the outlet passage being disposed between the combustion chamber and the inlet end of the inlet passage. A vertical lift engine 10 comprises in flow series an intake 11, compressor 12 having blades 13, annular combustion equipment 14, turbine 15 having blades 16, an exhaust duct 17 and a nozzle 18. The compressor 12 and turbine 15 are coupled by teeth 21 and mounted on a common shaft 20 running on bearings 22, 23 supported by shaft 24 containing fuel control equipment 26. Cooling air from passage 31 flows through passage 52 and coupling 21 to the turbine exhaust. Oil to reservoir 27 and fuel to equipment 26 may be supplied by pipes through a hollow strut 30. The axial length of the combustion equipment 14 is less than half its diameter and the axial length of the engine 10 less than its diameter. Specification 970,189 is referred to.
Patent GB-1376116-A (GB)
Title: Extrusion of metals
IPC: B21C23/32
Filed: 1973-01-26
Abstract: 1376116 Extruding CEFILAC 26 Jan 1973 [16 March 1972] 4163/73 Heading B3P In a hot extrusion process the starting billet is coated with a layer of powdered metal and a layer of amorphous material before heating and extrusion to seal the surface of the billet against contamination. Each coating may be applied separately or simultaneously to the lateral external surface of the billet, the end surfaces and to the interior surface of the billet if it is hollow. The powdered metal may be copper applied by a spray gun. The amorphous material is applied by dipping, spraying or painting and comprises enamel or one or more vitreous salts or citreous oxides or mixtures thereof. A thin layer of molydenum disulphide may be used as a lubricant. The billet is a titanium, zirconium or their alloys.
Patent GB-627757-A (GB)
Title: Improvements in multiple lift gasholders
IPC: F17B1/007
Filed: 1947-02-13
Abstract: 627,757. Gas holders. WHESSOE, Ltd., and PUTTICK, A. Feb. 13, 1947, No. 4178. [Class 54] A gas holder, of the type which comprises two or more lifts located in a tank containing liquid and in which a liquid seal is formed between adjacent lifts in an annular cup at the base of one lift interlocking with a dip at the top of an adjacent lift, has three or more lifts B, C and D, and each of the liquid seals between adjacent lifts is provided with means for preventing overflowing during cupping and blowing of the liquid seal after uncupping, these means comprising one or more pipes or ducts G affording communication between the lower part of the cup E at the base of a lift D and one or more points in the interior of that lift which lie on or near the surface 6 of the tank liquid in the holder when the lift is on the point of cupping. Specification 505,119 is referred to.
Patent GB-524839-A (GB)
Title: Inflatable spherical balls
IPC: B29D22/02
Filed: 1939-02-08
Abstract: 524,839. Balls for games. HUNGARIAN RUBBER GOODS FACTORY, Ltd. Feb. 8, 1939, No. 4201. Convention date, Feb. 9, 1938. [Class 132 (ii)] [Also in Group V] Inflatable rubber balls such as football bladders are formed by cutting from unvulcanized rubber more than two and preferably four sections each bounded by two circular arcs, uniting the sections at the edges and reinforcing the meeting edges at one end and providing an inflating valve stem at the opposite end, the product being then vulcanized under inflation pressure in a spherical mould which may have any suitable surface markings. The sections are preferably cut out by stamping with blunt dies and simultaneously united as described in Specification 322,176, [Class 87 (ii)]. Specification 19680/95, [Class 132] also is referred to.
Patent GB-987315-A (GB)
Title: Improvements in or relating to audio frequency amplifying circuit arrangements
IPC: G10K15/12
Filed: 1963-02-01
Abstract: 987,315. Reverberation systems; stereophonic systems. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Feb. 1, 1963 [Feb. 6, 1962], No. 4231/63. Heading H4R. A circuit arrangement for amplifying audiofrequency signals, including a modified signal derived therefrom, comprises an amplifier 1 in the channel for the non-modified signals and a signal modification device 7 having its output 9 connected to the input of the amplifier 1 and its input 6 connected to the output of the channel for the non-modified signals and also to an additional circuit (including a resistor 15) arranged to feed the modified signal substantially in phase opposition to the modified signal received from the output of the channel for the non-modified signals. A 180 degrees phase shift takes place in resistor 16 and potentiometer 5 is adjusted so that the modified signal fed back over the path 16, 1, 14 neutralizes that fed back through resistor 15. In a stereophonic system, Fig. 2 (not shown), a common signal modification device 7 serves both channels, so that the same reverberation signal appears in both outputs.
Patent GB-881013-A (GB)
Title: New or improved means for earthing the metallic screens of electrical conductors
Inventor: JACKSON FRANK REED
IPC: H01R4/64
Filed: 1959-02-06
Abstract: 881,013. Two-part couplings. SUPERFLEXIT Ltd. Jan. 28, 1960 [Feb. 6, 1959], No. 4281/59. Class 38 (1). In an end fitting including an inner nipple 6 and an outer sleeve 7 between which the end of an insulating conduit 3 is gripped, conductors 2 for connection to a multi-pin or socket head 1 are contained in the conduit 3 and have individual screening braids 10 and a common metallic outer tubular screen 11, the end of which is gripped between inner and outer sleeves 12, 13, the latter having a peripheral flange 15 which is sandwiched hetween the end of the nipple 16 and a retaining nut 16 in threaded engagement with the sleeve 7. Projecting fingers 18 formed on the sleeve 12 are bent around and soldered to the individual conductor screens 10 which are thereby earthed by way of the outer screen 11. If the end fitting itself is not to be earthed an insulating washer 17 may be interposed between the screening sleeve 13 and the retaining nut 16. Specifications 847,721, 859,613 and 879,865 are referred to.
Patent GB-1028485-A (GB)
Title: Semiconductor devices
Inventor: CULLIS ROGER
IPC: H01L21/00
Filed: 1965-02-01
Abstract: 1,028,485. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. Feb. 1, 1965, No. 4290/65. Heading H1K. A transistor is produced by diffusing the base region 2 into a layer 10 of the same conductivity type grown on a wafer 1 of the opposite conductivity type. The part of the base region underlying emitter region 4 is " pushed " deeper into the device by the emitter diffusion, but since the base region was diffused into epitaxial layer 10 this extension forms the active base region. The junction between layer 10 and wafer 1 does not move during the diffusions since layer 10 is grown with the same impurity concentration as the surface of wafer 1. The device is isolated by forming a region 11 of the same conductivity type as wafer 1 enclosing the required lease region and extending through layer 10 into contact with wafer 1 by a diffusion which may be performed simultaneously with the diffusion of emitter region 4. Alternatively layer 10 may be formed as localized areas in which the transistors are formed. Wafer 1 may comprise a relatively high resistivity layer epitaxially grown on a low resistivity substrate. The semi-conductor material may be Si and the impurities may be B and P diffused into the layer using silicon oxide masks which may remain on the device to protect the junctions.
Patent GB-1345829-A (GB)
Title: Amphibious vehicle
IPC: B62D1/22
Filed: 1972-01-31
Abstract: 1345829 Amphibious vehicles L M MYCROFT 31 Jan 1972 [14 June 1971] 4394/72 Headings B7A and B7J An amphibious vehicle has the driver's controls 12 for land operation located at one end of the vehicle and the driver's controls for water operation located at the other end of the vehicle. The land wheels are driven by an engine located beside or beneath the driver's seat 50. A propeller (82), Fig. 2 (not shown), may be driven by the same engine or may be driven by a second engine located at the end 68 of the vehicle or elsewhere. A seat 54 is pivotable about a horizontal axis so that it can act as the rear passenger seat when the vehicle is used on land and as the driver's seat when the vehicle is used on water. The seat may be locked in its required position by the engagement of pins in openings in stub shafts which project from the seat, Fig. 4 (not shown). The vehicle may be steered in water by its land wheels or by a combination of water jets and movable vanes.
Patent GB-975257-A (GB)
Title: Improvements in or relating to rotary shaft coolers and crushers
IPC: F27D15/02
Filed: 1961-02-06
Abstract: 975,257. Rotary shaft coolers. POLYSIUS G.m.b.H. Feb. 6, 1961 [Feb. 12, 1960], No. 4408/61. Heading F4B. [Also in Division B2] A rotary shaft cooler for cement clinker, for use eccentrically below a kiln, comprises a rotatable upper shell 2 carrying a crusher cone shaft 8 with a conical head 19 on an eccentric hub 7 keyed into radial spokes 6 fixed to the shell, the crusher cone shaft loosely supporting a crusher cone 15 by ribs 14 through bearings 13, and having fixed to its lower end, above the pivot bearing 10, an annular platform 18, from which the crushed material is swept by a deflector 25 into the stationary discharge hopper 5. The pivot bearing 10 is supported on radial stays fixed to a stationary casing 4 which also supports a funnel-shaped grating 11 sloping downwardly and inwardly to a yieldable crusher bowl 12. The latter is formed of exchangeable crusher plates, as is also the crusher cone 15, which, together with the bowl, defines the working gap 23. This gap varies on rotation of the eccentric crusher cone shaft, and the material moves spirally down through it due to the rotation of the annular platform 18. In the embodiment in Fig. 3 (not shown), the crusher cone shaft is disposed at a slight angle to the vertical, thus any point on the conc has a vertical as well as a horizontal oscillatory movement when the shaft is rotated. Cooling air enters the casing 4 at 20, and flows through the grating 11 into the cooling shaft; after-cooling being effected by an air flow through the hopper at 20a, which air then serves to cool the bearings 13. Both air flows may be regulated.
Patent GB-1220172-A (GB)
Title: Improvements relating to parachutes
IPC: B64D17/02
Filed: 1968-01-29
Abstract: 1,220,172. Parachutes. R. KOHNKE, [trading as RICHARD KOHNKE FALLSCHIRMWERK]. 29 Jan., 1968 [27 Jan., 1967], No. 4472/68. Heading B7G. A parachute canopy is made of a thin, rolled out, bonded; non-woven material of synthetic fibres. The gores 5 are preferably cut in one piece from the material. The parachute may be used for dropping goods, and may be used once only as it is said to be cheaper to construct and of cheaper materials than prior art canopies. The construction of prior art gores from woven fabric is also described, Figs. 1 to 4 (not shown).