baber/WOPTO huggingface dataset:
Patent GB-1273769-A (GB)
Title: Improvements relating to multi-colour printing
IPC: G03F3/00
Filed: 1969-07-23
Abstract: 1,273,769. Colour separation negatives. R. LUCAS & SON (NELSON MAIL) Ltd. July 23, 1969 [July 24, 1968], No.37136/69. Heading G2M. Colour separation negatives are produced by placing a transparent sheet over the copy of the work to be reproduced, attaching to the sheet one or more transparent screen elements each shaped and located so as to cover a corresponding area of the copy to be printed with one particular colour and each being performed with a pattern of spaced opaque or contrasting areas corresponding to the intensity of the colour to be printed in the respective area and masking or covering the entire area of each or any part of the transparent sheet which overlies an area of the copy which is to be printed with the full intensity of the colour. The colour of each part of the original is matched to one colour occurring on a colour chart, Fig. 2 to determine the required colours and densities of the three primary colours Y, R, B and of black X, e.g. the flesh tones of Fig. 3 matches with colour 5A which colour requires screen densities of value 1 in the yellow and red colour separation. The screen elements are of plastics pre-printed with a pattern of closely spaced dots or lines, the size of which are varied in accordance with the percentage of the total area of each element to be covered to produce the screens of density 1-4. One face of the element is coated with a transparent self-adhesive. The elements are provided with pre-angled base lines for ensuring proper placement of the element in accordance with a particular colour to be printed. The original is mounted upon a light table, registration pins being attached by transparent adhesive tape to the original, registration tabs being taped to each transparent plastics sheet.
Patent GB-995922-A (GB)
Title: A method of measuring resistivity and apparatus suitable for measuring resistivity
IPC: G01R31/26
Filed: 1962-10-01
Abstract: 995,922. Measuring resistivity. SIEMENSSCHUCKERTWERKE A.G. Oct. 1, 1962 [Sept. 30, 1961], No. 37202/62. Heading G1U. In a method for measuring the resistivity of material in a rod 1, current is passed along the rod and through a resistor 4 and an instrument 18 measures the voltage between two points on the rod spaced a given distance apart. The diameter of the rod is measured, so as to provide information for adjusting an arrangement 6, whereby a voltage is set up which bears a prefixed proportionality to the square root of the cross-sectional area of the rod. This voltage is fed to a device 17 which adjusts the value of the current passed along the rod and through the resistor 4 to make the voltage drop across the resistor 4 equal to the voltage set up in the arrangement 6. This arrangement ensures that the same constant current density is applied to all rods under test so that each resistivity may be read off directly from the meter. The arrangement for passing current along the rod includes a triode 3 with the resistor 4 in its cathode circuit and the rod under test in its anode. A variable gain amplifier 17 controls the grid voltage of the triode in response to the difference between the voltage across the resistor 4 and that across a potentiometer 6 set up in accordance with the measured cross sectional area of the rod, so that a current adjusted to be of constant density is provided. The rod may be of a semi-conductor material, e.g. monocrystalline silicon.
Patent GB-836981-A (GB)
Title: Improvements in or relating to cartons
IPC: B65D3/00
Filed: 1954-12-23
Abstract: 836,981. Cartons. GONTIER, F. A. H. March 23, 1956 [Dec. 23, 1954], No. 37275/54. Class 18. A substantially semi-circular carton has lid and base joined by a wall 9 having end extensions 11, 12 fitting inside the base wall 3. The lid and base walls may be of equal radius, a strip 10 being provided to permit the lid to move forward slightly relative to the base. The carton may be manufactured by pressing out a circular tray, slitting the tray wall on opposite sides to form the extensions 11, 12 and corrugating the base portion between the slits to form the wall 9. According to the Provisional Specification, the carton may be made from a blank cut by dies stepped so that the lid panel 5 lies above the base panel 2 with the centres of curvature along a vertical axis about which the blank is rotated in forming the walls 1, 4.
Patent GB-797269-A (GB)
Title: Improvements relating to temperature-responsive electrical switches or thermostats
Inventor: GEER CHARLES D
IPC: H01H37/46
Filed: 1956-12-06
Abstract: 797,269. Temperature-responsive actuating-elements. G-V CONTROLS, Inc. Dec. 6, 1956, No. 37360/56. Class 64(2) [Also in Group XXXVII] A switch comprises a tubular brass casing 10 closed at or near one end by a disc 15 carrying one end of a strut 17 of material of different expansion coefficient to that of the casing, the other end of the strut being fixed to the casing at 18, a pair of contacts within the casing operable by the differential expansion or contraction of the casing and strut, and the disc 15 being distortable to change the position of the strut and hence the operating temperatures. The strut 17 comprises a flanged member 17 connected to a strip 16 brazed in a slot in the disc 15, the flanges 19 being cut away at 21 and a hole 22 being formed to provide for flexure between the upper and lower parts of the strut. The latter carries a spring strip 23, clockwise movement of which is prevented by a bar 24 and a pair of arms 25, the latter also being fixed to the strut 17. the bar 24 co-operates with a glass bead 29 on a contact-carrying rod 28 having a flexible portion 30 which is fixed to a terminal 13. The operating temperature is set by removing a cap 14 and manipulating the end 16 with a tool to distort the cap 15 which thus holds the strut in adjusted position. U.S.A. Specification 2,664,483 is referred to.
Patent GB-1514554-A (GB)
Title: Electrolytic cells having rhenium coated cathodes
IPC: C25B11/04
Filed: 1975-09-11
Abstract: 1514554 Brine electrolysis cell BASF WYANDOTTE CORP 11 Sept 1975 [16 Sept 1974] 37366/75 Heading C7B A cell for producing halogen and alkali metal hydroxide (with asbestos diaphragm) or alkali metal hypohalite or halate (without diaphragm) from aqueous alkali metal halide solution is provided with a metal (e.g. ferrous, Cu or Ni) cathode coated with rhenium on one or both of its sides. The Re coating, e.g. 0.0001 to 0À001 inch thick, may be applied by electro-deposition e.g. from a Re/sulphamide bath, chemical deposition, vacuum deposition, cladding, powder deposition and sintering, cathodic sputtering or flame spraying. Prior to Re coating, an intermediate non-uniform coating of Ni or Co may be deposited to increase the surface area of the cathode, e.g. by plating; the intermediate coating may be heated in a reducing atmosphere e.g. H 2  and Ar. The Re coating may be applied as two separate layers with an intermediate heat treatment in a similar reducing atmosphere. The cathode substrate may be a steel woven wire mesh.
Patent GB-757974-A (GB)
Title: Rear view mirror assembly for automobiles
IPC: B60R1/08
Filed: 1954-12-24
Abstract: 757,974. Look-out reflectors for vehicles. LIBBEY-OWENS-FORD GLASS CO. Dec. 24, 1954 [Dec. 31, 1953], No. 37402/54. Class 103 (2). [Also in Group XXV] A rear view mirror for automobiles comprises a case 11 with an opening at the front closed by a mirror element 10, a substantially vertical support-plate 23 pivotally attached to the case 11 and connected indirectly to an automobile, and means disposed within the case and operatively connected with the support plate 23 for tilting the case and mirror element. The mirror element comprises a body a of glass or other transparent material which is wedge-shaped and is provided with front and rear reflecting coatings b, c. The surface c may be opaque with a reflectivity ranging from 50 to 95 per cent, and the surface b may be semi-transparent with a reflectivity of 10 to 30 per cent. The case 11 is carried on a truncated ball 19 on the end of an arm 20 fixed to the automobile, the ball being mounted in a spherical seat 24 formed in the support plate 23 and being held in the seat by a recessed metal strap 25 secured to the support plate. The bottom of the plate has a ball 37 received in a cam slot 36 formed in a cam block 34 which is slidably mounted on a bearing plate 42 secured to the lower wall 14 of the case 11. The block 34 has a spring- pressed ball adapted to engage in one of three recesses x, y, z in the bearing-plate, so that as the cam block is moved horizontally the mirror 10 with the cam 11 can be tilted to take up any of three definite positions giving three different image intensities of the same common rear field of view. In a modification, Fig. 7, the cam block 52 is pivotally mounted in the case and has at the top an arcuate slot 54 engaged by a ball 37 at the bottom of the support plate 23. Specification 669,554 is referred to.
Patent GB-1403020-A (GB)
Title: Hot-point stylus writing systems
IPC: H04L21/04
Filed: 1972-08-10
Abstract: 1403020 Copying by scanning DR ING RUDOLF HELL GmbH 10 Aug 1972 [12 Aug 1971] 37423/72 Heading H4F Each recording stylus 41, 42, 43 in a facsimile recorder is adjustably mounted on an endless belt 5 so as to be movable longitudinally of the belt to ensure that the styli are correctly spaced so that successive lines recorded on recording medium 2 are aligned. The adjustment is provided by rotation of an eccentric pin 48, Fig. 3, mounted on a holder (49, Fig. 4, not shown) attached to the belt 5, stylus 41 being carried by a support 44, a spring 46 ensuring that the edge of a hole 47 in support 44 abuts pin 48. An adjusting device (Figs. 6-8, not shown) is provided adjacent pulley 6 for use when adjusting the position of the styli. During adjustment pulley 6 is in a predetermined angular position and the position of the stylus is adjusted until it makes or breaks a circuit including two contacts (53, 54) on the adjusting device and an indicator. During the recording each stylus rests on a guide rail 18 and a conductive guide rail 19. A guide strip (56, Fig. 9, not shown) raises each stylus at the beginning of a line to provide a clear margin.
Patent GB-916177-A (GB)
Title: Improvements in or relating to transductors
IPC: G05B11/01
Filed: 1959-11-04
Abstract: 916,177. Magnetic amplifiers. SIEMENSSCHUCKERTWERKE A.G. Nov. 4, 1959 [Nov. 21, 1958], No. 37429/59. Class 40 (9). In an auto-self-excited parallel transductor using core material having a rectangular hysteresis characteristic and comprising a bias circuit energized through rectifiers from the transductor A.C. supply, the bias circuit includes a time delay element which causes a temporary flow of bias current after interruption of the A.C. supply. As a result, the core is reset to a reference magnetic state, and the production of undesired potentials across components in the transistor circuit is avoided when the supply is restored. An auto-selfexcited bridge rectifying transductor is shown in Fig. 1 in which control is effected by a D.C. potential applied from terminals 12, 13 to a transistor 11, the emitter and collector being connected between the main windings 3, 4 and self-excitation rectifiers 5, 6. The transductor A.C. supply 1, 2 also feeds bias windings 14, 15 by way of a full wave rectifier 20, resistor 17 and a choke 16 operating as a delay element, the energy stored in the choke supplying a bias current for a short time after cessation of the supply. A three-phase arrangement using three transductors having respective main windings 22-23, 24-25 and 26-27 is shown in Fig. 2, the windings connected to self-excitation rectifiers 28, 30, 32 and 29, 31, 33 poled in the same direction being connected to respective D.C. output terminals 34, 35. The A.C. supply is derived from the secondary windings of a three-phase transformer 21, the windings including tappings 48, 49, 50 from which lower voltages are applied to separate control windings 36-37, 38-39, 40-41 and bias windings 57 to 62. Rectifiers 42-47 are included in the control winding circuits, and the flow of rectified control current is determined by the D.C potential applied between base and emitter of a transistor 56. The bias current is also rectified at 63, and the bias circuit includes a resistor 65 and a capacitor 64 operating as a delay device.
Patent GB-1073006-A (GB)
Title: Metallising surfaces of plastics articles
Inventor: DIEBOLD ADOLF
IPC: H05K3/24
Filed: 1964-09-15
Abstract: A plastics, e.g. polyester, tape is coated with copper by first coating with a dispersion of iron particles in e.g. polyvinyl chloride, and then passing through a bath of e.g. (parts by weight) 30 copper sulphate, 6 sulphuric acid, 6 tartaric acid, and 6 trimethylaminoacetic acid.  A further coating of silver may be applied by passing through a bath of a mercury salt and then an ammoniacal bath of potassium silver cyanide.  An electroless nickel coating may be applied to the copper.  The iron layer may be applied, whilst subjected to a magnetic field, and to form a pattern e.g. by a stencil.  A copper coated plastics tape may be electroplated with Cd, Sn, Au, Ag or Co - Ni e.g. by passing the tape as a cathode through an aqueous solution (pH 5 to 6) of E.D.T.A., cadmium acetate, and HCl or tin chloride and E.D.T.A. or nickel sulphanate, cobalt chloride, and trimethylaminoacetic acid.
Patent GB-1112331-A (GB)
Title: Improvements in or relating to the manufacture of granulated arc welding fluxes
IPC: B23K35/362
Filed: 1965-09-03
Abstract: A granulated flux for submerged arc welding of iron or steel contains chromium trioxide as a bonding agent and is made from a powdered mixture of chromium trioxide and the fluxing ingredients which is shaped e.g. by extrusion, heated above the melting point of the chromium trioxide (196 DEG C.) up to a maximum of 600 DEG C. and granulated.  The mixture is preferably extruded at 196 DEG -250 DEG C. one dimension of the extrusion being equal to the required size of granule and notches or incisions formed on the extrusion aiding the subsequent breaking up into granules. The extrusion or the granules are reheated at 415 DEG C. minimum to convert CrO3 to Cr2O3.  The flux constituents are: calcined bauxite, silica calcined magnesite, cryolite, fluorspar, ferrosilicon, calcined dolomite, rutile, hausmannite, nickel, ferromolybdenum. Boric oxide and cellulose ester are also added as binders with the chromium oxide.
Patent GB-948204-A (GB)
Title: Improvements in and relating to dental compositions
IPC: A61K6/083
Filed: 1961-10-24
Abstract: Dental compositions, insoluble in water, comprise one or more monobasic carboxylic acids having at least 6 carbon atoms in a linear chain and a melting point below 65 DEG C., between 6 and 94% by weight of the composition of an oxide or hydroxide, or a carbonate (which reacts with the acid to produce an oxide or hydroxide), of one or more metals selected from alkaline-earth metals, magnesium, mercury, iron, nickel, cobalt, lead, zinc, cadmium and copper, and between 0 and 85% by weight of the composition of one or more reaction rate retarding or accelerating agents, so that the setting time is between 1 minute and 4 hours at 10-65 DEG C.  Other substances may be added to obtain special desired qualities e.g. viscosity regulators, bonding agents, odour and taste masking ingredients, toughening agents, germicidal compounds and fillers. The compositions are prepared by mixing the reactants at 10-65 DEG C., the metal compound being advantageously in powder form.ALSO:Dental compositions, insoluble in water, comprise one or more monobasic carboxylic acids having at least 6 carbon atoms in a linear chain and a melting point below 65 DEG  C., between 6 and 94% by weight of the composition of an oxide or hydroxide, or a carbonate (which reacts with the acid to produce an oxide or hydroxide), of one or more metals selected from alkaline-earth metals, magnesium, mercury, iron, nickel, cobalt, lead, zinc, cadmium and copper, and between 0 and 85% by weight of the composition of one or more reaction rate retarding or accelerating agents, so that the setting time of the initially liquid or semi-liquid composition is between 1 minute and 4 hours at 10-65 DEG  C.  The compositions are suitable for application as temporary fillings, bonding material for inlays and crowns, protective covering of tissues after gum resection, cavity lining under plastic and metal fittings registering bite relationships, and for relining dentures.  They may additionally contain oils (neutral or active) to regulate the viscosity, bonding agents, odour and taste masking ingredients, fillers, toughening agents and germicidal compounds.
Patent GB-1311810-A (GB)
Title: Electric stapler apparatus
IPC: B25C5/02
Filed: 1970-08-06
Abstract: 1311810 Stapling machines MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 6 Aug 1970 [15 Aug 1969] 38068/70 Heading B4C An electro - magnetically - operated stapling machine comprises a staple driving lever 18 urged downwardly in response to energization of electromagnet 14, 15 which is controlled by a micro-switch (36) (Fig. 2, not shown) actuated in a manner similar to that disclosed in Specification 1,310,765 when a lever 9 is pivoted by the material to be stapled. A driven staple has its legs turned inwardly or outwardly by pairs of grooves 48, 49 respectively in an anvil plate 44. The plate is rotatable about axis of shaft 47 by a manually operable lever 63, and is held by spring 59 in one or other of two limit positions defined by the ends of slot 53 and a projection (50) (Fig. 3, not shown) which extends into the slot. In each limit position a respective pair of grooves will be aligned with a staple driving hammer 24.
Patent GB-1016550-A (GB)
Title: Movable footstep bearing for a belt-driven spinning or twisting spindle
IPC: D01H7/12
Filed: 1964-09-17
Abstract: 1,016,550. Spindle mounting. SPINDELFABRIK SUSSEN SCHURR, STAHLECKER & GRILL G.m.b.H. Sept. 17, 1964 [Sept. 20, 1963], No. 38076/64. Heading DID [Also in Division F2] A footstep bearing has a resilient spirallywound damping elements 3, Fig. 1, which is mounted in the bearing and has an upper edge of its in inner winding 3<SP>11</SP> engaging a shoulder 4<SP>1</SP> of a bushing 4 and a lower edge of its outer winding 3<SP>1</SP> engaging a shoulder 1<SP>1</SP> on a housing 1 so as to resiliently support said bushing 4. The latter has an outwardly-directed flange 5 which centres the bushing and which is engageable with a spring- ring 6 so as to limit the axial movement of the bush 4. The bushing 4 also has a shoulder 4<SP>11</SP> which is engageable by the lower edge of the inner winding 3<SP>11</SP>. The ring 6 engages the upper edge of the outer winding of the element 3 and has a projection 6<SP>1</SP> which engages a slot 5<SP>1</SP> in the bushing 4 so to prevent rotational movement thereof. The bushing 4 receives a bearing element 7 which is retained by a disc 8 being swaged into position and by a spring-ring 9, a projection 9<SP>1</SP> of which prevents rotation of the element 7. In modifications, the shoulder 1<SP>1</SP> of the housing 1 is replaced by a cup-shaped supporting member 211, Fig. 2; (not shown) a spring-plate 312, Fig. 3, (not shown) is mounted on a shoulder 311 of a housing 31, has a central bulge which is engageable by a bearing element 37 mounted in a bushing 34, is provided with oil holes 312<SP>1</SP>, and is abutted by an outer winding 33<SP>1</SP> of a damping-spring 33, and spring-plates 412, 413, Fig. 4, (not shown) are inserted into a damping- spring 43 and rest on inwardly-directed projections 43<SP>111</SP> of an outer downwardly-extending winding 43<SP>1</SP> of the spring, the inner winding thereof engaging a shoulder 45 of the bushing which may be replaced by a flange such as 5, Fig. 1.
Patent GB-322120-A (GB)
Title: Improvements relating to centrifugal pumps
IPC: F04D29/44
Filed: 1928-12-24
Abstract: 322,120. Pearn, H. W., and Pearn & Co., Ltd., F. Dec. 24, 1928. Casings.-The impeller of a centrifugal pump has blades d, and is enclosed by a fixed diffuser having ducts g so formed that the liquid which is delivered by the impeller blades in the direction of the arrows h has its direction reversed by the curved ducts. The liquid passes from the ducts to the ports k for discharge; or in the case of a multi-stage pump it is guided to the eye of the next stage by vanes l, The ducts g are of progressively increasing cross sectional area, and they may contain longitudinal partitions p.
Patent GB-1437748-A (GB)
Title: Electronically controlled fuel injection system
IPC: F02D41/34
Filed: 1974-09-02
Abstract: 1437748 Automatic control of fuel injection in IC engines HITACHI Ltd 2 Sept 1974 [3 Sept 1973] 38197/74 Heading G3N A fuel injection system includes a pulse oscillator 10 producing pulses whose frequency varies with the inlet air-flow rate measured by meter 3. A rotation detector 12, typically the ignition distributor provides pulses proportional to engine speed which are used to set and reset bi-stable 13. In operation when bi-stable 13 is set the pulses out of oscillator 10 count up counter 11 until the next rotation pulse arrives which resets bi-stable 13 and allows higher frequency oscillator 14 to count down the counter 11. During this count down period the output AND gate is enabled to operate the fuel injector. In a modification, Fig. 5 (not shown) the up/ down counter is replaced by a latching circuit which holds the count until a comparator counter, energized from a higher frequency oscillator, reaches the stored count. The injection again occurs whilst the output of the higher frequency oscillator is being counted.
Patent GB-310948-A (GB)
Title: Improvements relating to sanding-apparatus for use on railway driving vehicles
IPC: B61C15/10
Filed: 1928-12-29
Abstract: 310,948. Rauscher, A. H., and Stoecklin, A., (trading as Rauscher & Stoecklin), (Assignees of Bertschmann, J.). May 5, 1928, [Convention date]. Sand, distributing on w h e e l tracks ; railcleaners.-Sand is distributed in front of the wheels of a locomotive or locomotive vehicle by providing an artificial sand-stone from which the sand is scraped off by pressing it into contact with the rail, or with the wheels, or with an independent rotating wheel or scraper. In the construction shown in Figs. 1 and 2, the block 1 of sandstone, which is preferably made from quartz sand bonded with cement is mounted in a holder 2 within a housing 10 and is under the influence of coiled springs 6. 7 which, through the medium of rotary shafts. 12, 13, toothed wheels 4 and a double rack bar 3, tend to press the block downwardly into contact with the rail. A double-armed lever 9 formed at one end as a pawl engaging a ratchet wheel 15 normally holds the block in a position above the rail, but is released, so as to allow the springs 6, 7 to function, when an energized electromagnet 8 attracts a bolt 17 adapted to strike a pin 16 at the opposite end of the lever 9. An auxiliary spring 20 acting on the ends of levers 22, 21 on the shafts 6, 7 serves to keep the total spring pressure on the block 1 substantially uniform as it wears away. The block also acts to remove any oil or grease from the rail. Modifications are described in which the blocks 1 make contact with the locomotive wheels, or with scraper wheels rotated by contact with the rail. Two sets of blocks, of relatively hard and relatively soft sand-stone respectively, may be provided, and adapted to be utilized either separately or simultaneously.