baber/WOPTO huggingface dataset:
Patent GB-1498681-A (GB)
Title: Magnetic transducer heads
IPC: G11B5/265
Filed: 1975-01-21
Abstract: 1498681 Thin-film magnetic head PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 21 Jan 1975 [24 Jan 1974] 2603/75 Heading G5R A magnetic head has two thin film magnetic core parts shaped in the form of a loop 18 and an I respectively with the I-core bridging the loop core and having both its ends magnetically coupled thereto, the overlapping portions of the two core parts at one end of the I-core forming opposed polepieces with a layer 19 of non- magnetic material therebetween to define a transducing gap l 1 , and windings 15, 16 wrapped around the loop core 18 as shown in Fig. 3. The layer 19 may be electrically conductive and form a recording winding. The loop 18 is split at the centre of gap l 1  by an auxiliary gap l 2  at right angles thereto, thus effectively dividing the transducing gap into two aligned gaps. During playback, the playback signal is the sum of the signals in windings 15, 16 and the difference of these signals gives an error signal which may be used by a servo to centre the head on the recording track. An x-y array of such heads on a single support may be positioned correctly by operating only one of the heads as part of the servo circuit. An alternative embodiment without the auxiliary gap l 2  is also described, Fig. 2 (not shown). The track width B may be 5 to 10 micrometers.
Patent GB-1219813-A (GB)
Title: Processes for electroless metallizing incorporating wear-resisting particles, and the products thereof
IPC: C23C18/40
Filed: 1968-01-17
Abstract: 1,219,813. Coating with metals. GENERAL AMERICAN TRANSPORTATION CORP. Jan.17, 1968 [Jan.18, 1967], No.2632/68. Heading C7F. A substrate of e.g. Fe, A1, Ni, Mg, Be, Cu or a non-metallic material is coated with an electroless layer of e.g. Ni, Co or Cu containing wear resisting particles (0.01 to 100 microns) of a silicon or metal compound which are insoluble in the plating bath, e.g. kaolin, glass flour, talc, oxides, carbides, nitrides, borides, silicides, sulphides, silicates, sulphates, carbonates, phosphates, oxalates or fluorides of Al, B, Cr, Hf, Mo, Si, Ti, Ta, V, W, Zr, Ni, Mg, Ca, Ba, Sr, Ce, Fe or Mn. The particles may be kept in suspension by stirring or by blowing gas through the solution. The coating may be subsequently heated to 100 to 600‹ C. In an example a Ni plating bath may contain (moles /1): Ni SO 4 , 6H 2 0 0À08, NaH 2 PO 2 H 2 O 0À23, lactic anion 0.30, propionic anion 0.03, lead ion 1 p.p.m. (pH4À6). Several other baths are described including the use of N-diethylborazene, dimethyl-berazene or sodium borahydride as a reducing agent.
Patent GB-774796-A (GB)
Title: Improvements in, or relating to, aerials
IPC: H01Q9/08
Filed: 1954-01-29
Abstract: 774,796. Aerials. CHERRINGTON, G. L. A. Jan. 31, 1955 [Jan. 29, 1954], No. 2696/54. Class 40(7) A dipole aerial assembly comprises a hollow arm 1 carrying a housing 3 provided with at least two apertured lugs 10. Sockets 13 for carrying the elements 20 extend through the apertures in the lugs and are so dimensioned that an annular clearance exists round them. They are each held in position by a loose fitting insulating pin 12 passing through diametric holes in the socket and lug and a sleeve 15 of insulating material which threads on to the outer screwed end of the socket and extends over the end of the lug to retain the pin 12 in position and to bear against the shoulder 11. The outer ends of the sockets are bored and split as at 14 and elements 20 of suitable length are inserted in the bores and clampd in position by lock nuts 21 having a tapered end portion which engages a corresponding taper on the end of the socket. A base 2 is provided on the opposite end of the arm 1 and this has 3 or more ears 6 provided with holes for fixing screws. Clearance spaces 7 are arranged between adjacent ears so that a feeder 8 can be led through one of them and up inside the arm 1 to the interior of the housing 4. There the wires 17 of the feeder are bored at their ends and secured inside short holes in the ends of the sockets by set-screws 19. The cap 9 of the housing is removable so that this can readily be done.
Patent GB-1184773-A (GB)
Title: Piezoelectric Ceramic Materials
Inventor: ICHINOSE NOBORU
IPC: C04B35/50
Filed: 1968-01-18
Abstract: 1,184,773. Piezoelectric ceramics. TOKYO SHIBAURA ELECTRIC CO. Ltd. 18 Jan., 1968, No. 2779/68. Heading C1J. A piezoelectric ceramic consists of, in mol. per cent, 44-50 of PbTiO3, 0À5-6À0 of a compound Pb(MeNb)0.5 O3, Me being In, Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu (and optionally 0À01-1À0% by weight of MnO2) and the remainder FbZrO3.
Patent GB-707797-A (GB)
Title: Electrically conducting laminated safety glass
Inventor: GAISER ROMEY ARTHUR
IPC: B32B27/00
Filed: 1952-02-02
Abstract: 707,797. Electrically heated windscreens. LIBBEY-OWENS-FORD GLASS CO. Feb. 2, 1952, No. 2823/52. Class 39 (3) A laminated safety glass panel, e.g. for windscreens, comprises two sheets of glass 10<SP>1</SP>, 11<SP>1</SP> with a thermoplastic interlayer 12<SP>1</SP>, one of the sheets 11<SP>1</SP> having its inner face coated with a transparent, conducting film of tin oxide 15<SP>1</SP>, electrodes 13<SP>1</SP> being provided along the margin of the panel, and to prevent separation between the edges of the sheets 10<SP>1</SP>, 11<SP>1</SP> and the interlayer 12<SP>1</SP> a non-metallic separator 17 is placed between them in the region of the electrodes 131. The separator is one of two kinds. It may be of a material which does not bond, either to the glass or to the plastic, e.g. cellulose acetate, stearic acid, silicone oils or vinyl chloride resin solutions, or it may be a bonding material but sufficiently elastic to follow the movements of the panel, e.g. synthetic rubber cements. Whichever separator material is used it may be extended downwardly along the exterior edge of the sheet 111, as at 18, and separator material of the elastic type may be placed in addition between the edges of the sheet 10<SP>1</SP> and plastic 12<SP>1</SP> as at 19. Specification 632,256 is referred to.
Patent GB-512661-A (GB)
Title: Apparatus for transforming polar into rectangular coordinates
IPC: G01C21/00
Filed: 1938-01-28
Abstract: 512,661. Calculating-apparatus. AVANZINI, L., and BOHRN, H, Jan. 28, 1938, No. 2830. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 2, 1938.]. [Class 106 (i)] A device for transforming polar into rectangular co-ordinates comprises a plate 20 carrying a rectangular co-ordinate network, a frame 4 rotatable to the given polar angle, a slide 8 movable along the frame to the given polar distance and optical means such as a microscope 12 mounted on the slide for reading on the network the rectangular co-ordinates corresponding to the given polar co-ordinates. The angulai setting of the frame is perforated with the aid of graduations on the plate 20, microscopes 18, 18<SP>1</SP> on the frame and a tangent-screw device 16. The slide 8 is set with the assistance of a microscope 19 and is moved by rack and pinion means 9 or, in a modification (not shown), by a micrometer screw device. The crosswires in the microscope 12 may be automatically or manually rotated into parallel relationship with the lines on the co-ordinate network. These crosswires may also be moved by a micrometer screw 14 and the microscope as a whole is adjustable on the slide 8 by screw device 13. The Specification as open to inspection under Sect. 91 describes also two other co-ordinatetransforming devices. In one, Fig. 4 (Cancelled), three rotatable discs 23, 24, 25 are connected together by a rigid member 64 pivoted to the discs at 26, 27, 28 respectively. The discs are also connected by another member 65 engaging the discs at points 29, 30, 31 which are slidable along rails 61, 62, 63 secured to the, discs., The discs are rotated through the given polar angle a by a setting device 50 and the point 30 is moved by hand along the rail 62 the given polar distance s. Slides 32, 33 moving in fixed guides 37, 39 and operated by the member 65 are thus moved to indicate the required rectangular co-ordinates. The other device, Fig. 9 (Cancelled), comprises a disc 72 rotated through the given polar angle and carried on a member 80 slidable along a 'frame 88 through the given polar distance. The corresponding rectangular co-ordinates are given by two planimeter wheels 98, 99 mounted in frames 94 secured to the disc 72. This subjectmatter does not appear in the Specification as accepted.
Patent GB-544797-A (GB)
Title: Improvements in carburetters
IPC: F02M1/00
Filed: 1941-03-04
Abstract: 544,797. Spray carburetters. ZENITH CARBURETTER CO., Ltd. (Bendix Aviation Corporation). March 4, 1941, No. 2935. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 30, 1941.] [Class 7 (iii)] In order to coun ter-act the effect of vertical oscilla tions of the float 52 upon the fuel-inlet valve 50 to the floatchamber a plate spring 64 is arranged between them, being secured at one end to the pivoted hanger arm 62, and bearing near its free end on the valve.
Patent GB-1045857-A (GB)
Title: Method and apparatus for continuously winding and unwinding textiles in textile treating machines
IPC: D06B17/04
Filed: 1964-01-23
Abstract: 1,045,857. Textile treating apparatus. KYOTO KIKAI KABUSHIKI KAISHA. Jan. 23, 1964 [May 22, 1963], No. 2967/64. Heading D1L. In winding successive portions of a length of a textile material between two parallel mandrel in a treatment chamber, while the textile is being fed through the chamber continuously, (Figs. 4-12, not shown) the material is first folded by means of a jet of air or steam, the fold being spaced from the leading edge of the material by a distance substantially equal to one half of the length of a pre-determined first portion, thereby forming an end portion folded back on itself and having a first folded end; the end portion then wound on a mandrel starting from the first folded end and the leading edge of the material is passed out of the treatment chamber; the positions of the mandrels are then interchanged and the material folded again to form a second fold at the inner end of the first portion, the second folded being then wound on to the second former taking one layer from the incoming material and a second layer from the said first portion wound on the first mandrel, meanwhile passing the other layer of the first portion from the first mandrel out of the chamber. The mandrels are then returned to their initial positions and the steps repeated so passing the material continuously through the chamber. Tn the arrangement shown mandrels 4, 4<SP>1</SP> are mounted on support plates 5 mounted for rotation in suitable bearings, the shafts of the mandrels passing through circular plates 3 rotatable in seating relationship with holes 2 in sides 1<SP>1</SP> of treating chamber 1. The material a is passed into the chamber and guided around the mandrels in the manner described above and then out of the chamber as shown. The folding means consists of nozzles 11 in a steam tube 12 supplied through arms 10 from tube 9.
Patent GB-1523854-A (GB)
Title: Preservative emulsion for wood
IPC: B27K3/52
Filed: 1977-01-25
Abstract: 1523854 Wood preservatives KEMIRA OY 25 Jan 1977 [26 Jan 1976] 02976/77 Heading A5E A wood preservative emulsion comprises an aqueous emulsion of a Cr(VI) salt in a synthetic polymer latex, and contains 0.1 to 10% by wt. polymer solids. The polymer may be polyvinyl acetate and/or a polyacrylate. 0.1 to 1.0% by wt. of a coloured pigment of particle size 0.1-1.0 micron may also be present.
Patent GB-1071446-A (GB)
Title: Improvements in and relating to apparatus for detecting the distance between the end of a lance for blowing gas onto a pool of metal and the level of the pool
IPC: G05D3/14
Filed: 1966-01-21
Abstract: 1,071,446. Radar. COMPAGNIE D'ETUDES ET DE REALISATIONS DE CYBERNETIQUE INDUSTRIELLE. Jan. 21, 1966 [Jan. 29, 1965], No. 2988/66. Heading H4D. The distance of the tip of an oxygen lance above the surface of a pool of molten metal is determined by measuring the distance of that surface from a point on the lance, at which point an object is injected to drop through the lance to the pool, by means of a Doppler radar connected to a counter. The lance may be maintained retro-actively at a desired distance from the pool's surface. If the latter becomes too agitated continuous distance measuring becomes impossible; the radar is then made bidirectional or a second Doppler radar is provided, together with a stationary reflector, lance movements being controlled relative thereto.
Patent GB-138612-A (GB)
Title: Spiral cut gear wheels with resilient teeth
IPC: F16H55/16
Filed: 1920-01-31
Abstract: 138,612. Haddan, A. J. H., (Aktiebolaget Ljungstr÷ms Angturbin). Jan. 31, 1920. Toothed wheels. - To render the teeth of toothed wheels resilient, they are formed on webs 2 separated by spaces 3, which are wider at the top than the distance 4 between the teeth at the roots. The spaces are rounded at the base 5.
Patent GB-880147-A (GB)
Title: Improvements in or relating to the production of metal articles
Inventor: MARVIN PHILIP ROGER
IPC: C23C16/01
Filed: 1958-01-30
Abstract: Metal articles such as angle irons, electric switch plates, grids and springs, are produced by shaping a combustible member to form a support, depositing a heat-conductive film on the support, heating the film to a temperature below the combustion temperature of the member, contacting the film with a heat-decomposable metal-bearing gaseous compound to deposit metal thereon, and removing the support member by combustion.  The support member may be cardboard or an open weave fabric (to produce a grid), the heat-conductive film may be aluminium paint or a carbon-containing printing ink, and the metal-bearing compound may be the hexacarbonyl of nickel, chromium, molybdneum or tungsten or copper acetylacetonate.  The film serves as a heat-conductive pattern and is heated by induction means.
Patent GB-154485-A (GB)
Title: Improvements in gloves and the like
IPC: A41D19/01
Filed: 1920-02-02
Abstract: 154,485. Lynn, J. W. Feb. 2, 1920. Gloves.-In gloves having a finger extruding slit, which is covered by a flap drawn towards the wrist for closing the opening, the slit 2 extends into the thumb portion of the glove and the flap 7 is attached near the thumb by a gusset 10, which may be elastic and tends to widen the slit when the flap is raised, as shown. An elastic band 12 passes inside the glove round the back and sides of the wrist engaging at the front.
Patent GB-785587-A (GB)
Title: A cathode ray tube with deflection control
IPC: H01J31/04
Filed: 1953-02-04
Abstract: 785,587. Cathode ray tubes. KRAWINKEL, G. H. Feb. 4, 1953 [Feb. 5, 1952], No. 3137/53. Class 39(1). A cathode ray tube has electromagnetic or electrostatic deflecting means P1, P2 energized by an input signal and a target for indicating the magnitude of the deflection or for producing in an output circuit a current whose magnitude depends on the magnitude of the beam deflection, wherein between the deflecting means P1, P2 and the target electrostatic deflection amplifying means are provided which produce a field at right angles to the plane of deflection by P1, P2 and which increases in intensity in the direction of the deflection by P1, P2 so as to cause a further deflection of the beam at right angles to the deflection by P1, P2 and increasing in magnitude with the magnitude of the deflection by P1, P2. In one form, Fig. 1, the beam is deflected by the input voltage applied to plates P1, P2 and then passes between plates E1, E<SP>1</SP>1 which have voltage gradients from top to bottom but in opposite senses so that the beam is deflected at right angles to the original deflection by an amount proportional thereto. Plates E1 E<SP>1</SP>1 are solely of resistance material or of such material coated on a carrier by evaporation, chemical deposition or mechanically, and are connected across D.C. current sources, Fig. 2 (not shown), resistances being included in the circuits to determine the point of zero deflection which preferably but not necessarily corresponds to the position of the beam when undeflected by plates P1, P2. The beam is then given a further deflection in the same direction as and proportional to the original one (between plates P1, P2) by plates E2, E12 constructed similarly to plates E1, E<SP>1</SP>1. There may be more than two pairs of plates E1, E<SP>1</SP>1, E2, E<SP>1</SP>2 to further amplify the original deflection. The deflected beam impinges on target S which comprises secondary emitting strips V, Fig. 4, connected to bar VI and resistance strips W connected to bars W1, W2. D.C. source M is connected between W1 and W2 and its positive pole is connected to V1 so that secondaries are blocked at the lower ends of V but pass to an approximately linearly increasing extent to a maximum at the top ends ; the effective secondary emission consequently depends on the point of impingement of the primary beam. Electrode S1 may be a collector or a further secondary emitter associated with collector S2. The amplification can be varied continuously by varying the voltages between E1, E<SP>1</SP>1 and E2, E<SP>1</SP>2. The device may be used for ascertaining or indicating the magnitude of a voltage as a voltage amplifier, or as a rectifier or modulator. The working point can be shifted along the characteristic by applying an additional fixed bias between E2, E<SP>1</SP>2 or P1, P2. Modulation is achieved by applying a modulating voltage between E1, E<SP>1</SP>1 or E2, E<SP>1</SP>2 or to an intensity modulating electrode in the gun. Specification 785,588 is referred to.
Patent GB-123567-A (GB)
Title: Improvements in or relating to Boot or Shoe Sewing Machines.
IPC: D05B15/00
Filed: 1918-02-22
Abstract: 123,567. British United Shoe Machinery Co., (United Shoe Machinery Corporation). Feb. 22, 1918. Boot-sole sewing - machines; welting and turnshoe. - In in. seam boot or shoe sewing-machines, such as described in Specifications 17328/08 and 20712/09, back-gauge actuating mechanism of the kind comprising an advancing spring and a retracting power-operated one-way clutch is modified so that the advance of the gauge into contact with the work under the influence of the spring is always under control with the object of avoiding hammering of the gauge on the work. The mechanism comprises a link 54 connecting the back-gauge to a slide 52 and embraced by a box 66 which is reciprocated by a cam-actuated lever 60 and link 78, and is provided with a. spring-pressed clutch roller 72 and a, pivoted trip lever 80 for releasing the clutch at the desired times. The trip lever is actuated at the end of the retracting movement of the gauge by contact with a fixed abutment 84, and the slide 52 is advanced by the actuating spring till an abutment 96 on the slide comes in contact with an extension of the pin 100 connecting the camlever to the link 78. The subsequent advancing movement of the gauge into contact with the work is performed under the influence of the spring and is controlled by the contact of the abutment 96 and pin 100. A trip plate 94 may be provided to release the clutch at or near the forward end of the movement of the gauge, and a second abutment 98 may be provided on the slide 52 to prevent undue rearward movement of the back-gauge. The gauge 24 is provided on the forward end of a lever 30 which is adjustably connected by an eccentric pivot 42 to a lever 32 pivoted on the machine frame at 34 and adjustably connected to the actuating link at 58. The rear-end of the lever 30 is guided in a downwardly and forwardly inclined slot 40 which, in conjunction with the position of the pivot 34 of the link 32, maintains the gauge in proper operative relation with the needle in all positions in which it may engage with the work. The advancing spring is relatively weak and is shown at 44 coiled round a stud on the frame, and engaging with its upper end a pin 46 on the lever 30. The gauge is locked in engagement with the work in the. usual way by a cam-actuated wedge 102 which forces a roller 104 into engagement with the slide 52, and cramp it in its guide.
Patent GB-727838-A (GB)
Title: Improvements in or relating to microwave transducers
IPC: H01J23/42
Filed: 1953-02-06
Abstract: 727,838. Travelling-wave tubes. WESTERN ELECTRIC CO., Inc. Feb. 6, 1953 [Feb. 8, 1952], No. 3402/53. Class 39 (1). [Also in Group XL (b)] A helical wave-guide member in a travelling- wave tube comprises a coupling portion which extends into the field of a wave-guide or coaxial line, the impedance of the helical guide being reduced at the coupling point by means of an impedance transformer. In the embodiment of Fig. 5 the helix 51 extends through an aperture into the wave-guide 52 and is supported by a conductive post 53 projecting from the guide wall. A hollow cylindrical conductive collar 54 projects from the opposite wall and confines the field coupling along the helix to a short gap 57 which is less than a half helix wavelength. Additionally, a #/4 portion 58 of the collar 54 closely surrounds the helix and effects a reduction of the impedance at the coupling gap. The collar 59 of Fig. 6 serves the same purpose, the coupling gap 57 being situated off-centre with respect to the guide 52. The gap 60 is made too long to have any coupling effect. The helix is started from the top of the conductive post 53 in order to minimize the capacitance at the coupling gap 57. In a further modification (Fig. 7, not shown) the wave-guide is tapered to a thin end-portion across which the end of the helix extends. In this case to provide the necessary impedance transformation the walls of the tube 74 closely surround the helix for a distance #/4 adjacent the wave-guide. Fig. 8 shows an arrangement in which a short cylinder 84 surrounds the helix 51 to provide a lumped capacitance for reducing the helix impedance at the coupling gap. In the arrangement of Fig. 9 (not shown), the post 53 is omitted, the end of the helix being open-circuited. The helix may be joined to the inner conductor 202B, Fig. 10B, of a coaxial line 202. The electron stream flows through a hollow connecting cap 207 on the end of the inner conductor. Where the coaxial line is aligned with the helix the electron stream may pass through the hollow inner conductor of the line (Fig. 10A, not shown). A projection 203 of the tube envelope forms a quarter-wave transforming section between the line and the helix.
Patent GB-228349-A (GB)
Title: Improvements in celluloid windows
IPC: B60J1/08
Filed: 1924-02-09
Abstract: 228,349. Hall, F. H. Feb. 9, 1924. Vehicle windows; frames; glazing windows.- Windows glazed with celluloid or like material. The, celluloid &c. is riveted at or near the middle of each side to a resilient frame 2 which allows contraction of the celluloid, the corners of which are left free. The frame 2 is secured by corner screws 11 to a rigid flanged frame, spacing washers being placed on the screws, which pass through enlarged holes in the celluloid to allow relative movement. A clamp, shown in Fig. 3, may be used for putting an initial strain on the frame 2 by means of screws 6 passing through upturned lugs 5 on the arms of a cross-piece. The celluloid may be secured to a spring-pressed bar slidably mounted on a frame in any suitable manner.