baber/WOPTO huggingface dataset:
Patent GB-1491118-A (GB)
Title: Semi-conductor diffusion furnace components
IPC: C04B35/573
Filed: 1975-10-31
Abstract: 1491118 Muffle furnaces NORTON CO 31 Oct 1975 [6 Dec 1974] 45521/75 Heading F4B [Also in Divisions C7 and H1] The process tube 28, paddle 30 and boat 16 of a semi-conductor diffusion furnace are each composed of a matrix of sintered silicon carbide which is made impervious to gases by impregnation with silicon metal having a purity of at least 99% silicon, preferably 99À9%. The component parts of the furnace may be formed by slip moulding silicon carbide into a green shape which is sintered at 2250 C.; the sintered shape thereafter being partially or wholly impregnated with silicon at a temperature of about 2150 C. Alternatively the shaped green component may be subjected directly to siliconizing, the silicon carbide particles being sintered and the matrix being impregnated all in one step. Silicon wafers 34 are held in slots 18 in the boat 16. Wheels (6, Fig. 2, not shown) are provided at one end of the paddle 30. The process tube 28 has a necked down end (2, Fig. 1, not shown) which terminates in a ball joint 4 for connection to a source of gas or vacuum.
Patent GB-980607-A (GB)
Title: Device for providing relative leak-tightness between two parts which are movable with respect to each other
Inventor: CHAMEROY JEAN
IPC: F16J15/34
Filed: 1963-11-19
Abstract: 980,607. Conduits. GROUPEMENT ATOMIQUE ALSACIENNE ATLANTIQUE. Nov. 19, 1963 [Nov. 20, 1962], No. 45632/63. Heading F2P. [Also in Division G6] A device for providing relative leak-tightness between two parts movable with respect to each other comprises a movable member 3 which passes with a clearance through a conduit 5 in which a gas is circulated, the member being provided with at least one shouldered orifice 6 in which is a filter capsule 8 carried by a support 7 slidably fitted in the orifice, and an attraction system, e.g. an electromagnet 10, a permanent magnet or springs, which exerts on the support a force sufficient to lift and bring the filter capsule into contact with the rim 5a of the conduit. As shown, the member 3 is in the form of a disc and rotatable about the axis 4 thereof, and the support 7 is normally held by springs 9 on a seating 6a.
Patent GB-1031596-A (GB)
Title: Improvements in or relating to suppressed carrier transmission systems
IPC: H04B1/68
Filed: 1963-11-21
Abstract: 1,031,596. Vestigial sideband transmission systems. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 21, 1963 [Dec. 18, 1962], No. 45929/63. Heading H3R. In a vestigial side-band suppressed carrier system for transmitting data signals and particularly in such a system where a repetitive data pattern is transmitted which contains no D.C. or low frequency A.C. components, the difficulty of reconstituting the carrier for synchronous detection at the receiver is overcome by adding either a D.C. signal or a low frequency A.C. signal to the data signal before application to a balanced modulator whereby either a small amount of carrier or two side-band signals equally disposed on either side of the carrier position are transmitted. The data signals are applied via unit 5, Fig. 2, and L.P. filter 6 to a balanced modulator 7 which also receives an input at frequency fc from carrier oscillator 8, the output of the modulator is applied via a vestigial side-band filter 9 to the transmission path. The response of the vestigial side-band filter is such that no upper sideband signals greater in frequency than fc + f1 are transmitted. The unit 5 may take several forms, e.g. in the arrangement shown in Fig. 3 a D.C. signal from source 5A is added to the data signals in summing circuit 5C and this signal produces an unbalance in the modulator which allows a small amount of carrier signal to be transmitted. In the arrangement shown in Fig. 5, signal generator 20 develops a signal which is applied via logic circuitry to a summing circuit 26 in which it is added to the data signal. The resultant signal after modulation produces two side-bands fc - f3 and fc + f3 which are sufficiently close to the carrier for the upper side-band to be passed by the vestigial sideband filter. At the receiver the signals are amplified and applied to a filter 12 which is the complement of the V.S.B. filter and hence passes signals in the range fc - f1 to fc + f1, these signals are applied to a square low detector which produces an output signal at 2fc. This signal after clipping is applied via a narrow band filter 15, delay network 16, in which its phase may be adjusted, limiter 17 and " divide by two " circuit 18 to a balanced demodulator 10 to which the input signal is also applied.
Patent GB-935230-A (GB)
Title: Improvements in or relating to magnetic recording and reproducing systems
IPC: G11B5/64
Filed: 1961-12-21
Abstract: 935,230. Magneto-optical recording &c. apparatus. AMPEX CORPORATION. Dec. 21, 1961 [Jan. 30, 1961), No. 45939/61. Class 40 (2). A record for playback by the Kerr effect has a glass base 10, a thin layer of low coercivity, high optical reflectance material 12 and a layer 14 of normal magnetic recording material supercoated thereon. A signal recorded conventionally by a head 16 provides an image field in the layer 12 by printthrough and this field is read by known optical means 18, the glass 10 being so chosen as not to rotate the plane of polarization of the light beam. The record may also be played back by the Faraday effect (Fig. 3, not shown), a polarized infra-red beam, able to penetrate the layer 14 being analysed after transmission.
Patent GB-1385470-A (GB)
Title: Valves
IPC: F16K31/50
Filed: 1971-10-04
Abstract: 1385470 Valves YORKSHIRE IMPERIAL METALS Ltd 20 Nov 1972 [4 Oct 1971] 46051/71 Heading F2V In a valve for use in domestic radiator systems comprising a housing 1 with inlet port 2, valve seat 3, outlet port 5 and a non-rotatable closure member 16 which is attached to a knob 20 by a rotatable but axially-fixed spindle 7, the knob is provided with a projection 24 and the body of the housing is provided with a projection 19 to limit the rotation of the knob in one direction, rotation of the knob being limited in the other direction by abutment of the closure member against the seat and the amount of rotation preset by the position of the knob on the spindle. Two projections can be provided on the knob to limit the rotation without closure of the valve.
Patent GB-1374774-A (GB)
Title: Method of and apparatus for metering predetermined volumes of a liquid
IPC: A47J31/56
Filed: 1971-10-04
Abstract: 1374774 Dispensing measured quantities of liquid W LEIFERMANN 4 Oct 1971 [10 Oct 1970 29 May 1971 5 June 1971 20 July 1971] 46115/71 Heading B8N An apparatus for dispensing measured quantities of liquid comprises an enclosed reservoir 10 having an outlet valve 12, an air tube 13 connected to the reservoir and having a vent valve 14, a chamber 18 defined in part by a diaphragm 17 communicating with the air tube between the vent valve and the reservoir, and control means 20 including an electronic, mechanical or photo-electric sensing device 19. Upon activation of the control means by closing an activating switch 23, the vent valve is closed and the outlet valve is opened. Liquid flows from the reservoir until the diaphragm is raised by the reduction of air pressure in the reservoir, tube and chamber. Raising of the diaphragm is sensed by the sensing device and the conditions of the valves are reversed. As illustrated the sensing device is photoelectric. The sensing device may alternatively be a resonant circuit oscillator mounted within or outside the chamber 18 (Figs. 3 and 6, not shown), and in this case the diaphragm will be coated with metal. In further embodiments a rod depends from the diaphragm (Figs. 2 and 4, not shown) and controls the sensing device. An indicator 26 will, after a predetermined interval has elapsed after closing switch 23, indicate "no liquid", if the diaphragm has not been raised during that interval. The reservoir may contain an elastic container enclosing the liquid and connected to the outlet 11. The sensing device may be adjustable to vary the volume of liquid dispensed.
Patent GB-462848-A (GB)
Abstract: 462,848. Sanitary closets. BERESFORD & SON, Ltd., J., and SMITH, S. A. Nov. 15, 1935, No. 31611. [Class 26] A water-closet for use in places where flushing - water from the mains is unobtainable, e.g. in aircraft and road - vehicles comprises a pan a and a water - chamber b wholly or in part surrounding the pan in which water can be stored under pressure of air compressed in the upper part, control of the outflow from the chamber to the pan being effected by a valve. The chamber b is supplied with water through a connection c and with air through a second aperture ; further apertures are provided for the attachment of an air-release valve and a tap. The discharge from the pan is controlled by a second valve, both valves being operated by a hand- or foot-operated lever i which forms part of a rectangular pivoted frame i, o,j. The rod o when raised first rotates through a linkage p, q a spindle r of the valve controlling discharge from the pan ; it then actuates a pivoted lever s which engages the stem t of a spring-controlled valve so that communication is established between a pipe l connected to the chamber a and a pipe n communicating with the pan.
Patent GB-1272897-A (GB)
Title: Chain for chain transmission
Inventor: USOV VLADIMIR VIKTOROVICH
IPC: F16G13/06
Filed: 1970-10-10
Abstract: 1,272,897. Chains. VSEROSSIISKY ORDENA TRUDOVOGO KRASNOGO ZNAMENI NAUCHNO ISSLEDOVATELSKY INSTITUT MEKHANIZATSII I ELEKTRIFIKATSII SELSKOGO KHOZYAISTVA. 1 Oct., 1970 [6 Oct., 1969], No. 46703/70. Heading F2Q. A chain comprises links in the form of rings 1 which are interconnected by rollers 2 having ring-engaging portions 2b of reduced diameter which is less than the internal diameter of the rings 1 by a factor of at least 3À5. The length of each portion 2b is equal to twice the thickness of the rings 1. Flats 3 are provided on the rings 1 to facilitate assembly. In a modification, rings 1a, Fig. 3, have outer and inner diameters which differ considerably, and three rings overlap on rollers 5 whilst two rings overlap on each of rollers 4 and 6.
Patent GB-1479468-A (GB)
Title: Tunnels and shafts
IPC: E21D5/06
Filed: 1974-10-30
Abstract: 1479468 Tunnel or shaft linings; lattice beams; latticework TINSLEY WIRE INDUSTRIES Ltd 30 Jan 1976 [30 Oct 1974] 46914/74 Headings E1F E1K and E1W A tunnel or shaft lining comprises lattice sections 1 connected together in situ to form an arch or ring conforming to the profile of the tunnel or shaft, each section comprising a pair of outer wires 2, a pair of inner wires 3, and cross-wires 4 extending between and welded to the pairs of wires 2 and 3, and longitudinal lengths 5 of lattice connected to the sections 1, e.g. by clips 10. The longitudinal lengths comprise two pairs of wires 6A, 6B and cross-wires 7 extending between and welded to the pairs of wires 6A, 6B. Preferably the lattice sections 1 overlap at their adjoining ends and are provided, at their ends with wire panels 12 which are secured together by clips or bolts. Alternatively, or in addition, "fish plates" 13 of wire mesh may be clipped or bolted across the adjoining ends of the lattice sections. The longitudinal lengths 5 may be connected together in a similar manner or they may be arranged in staggered overlapping relationship with each other. Wire mesh may be secured to the lattice sections and lengths to cover the area bounded by those sections and lengths to serve as reinforcement for concrete, the latter being mixed with fine wire filaments or loops and applied by gunning.
Patent GB-1536654-A (GB)
Title: Distributing fluids into fluidized beds
IPC: C10J3/56
Filed: 1974-10-31
Abstract: 1536654 Fluidisation grid EXXON RESEARCH & ENG CO 13 Oct 1975 [31 Oct 1974] 47152/74 Heading B1F [Also in Division F4] A fluid distributor for distributing fluids into the volume to be occupied by a bed of fluidized solids, the distributor comprising an array of upstanding nozzles having fluid outlets for directing a first fluid laterally from the nozzles into the volume of the bed, the fluid outlets of some nozzles being disposed so as to be at a different level in the bed volume from the level of the fluid outlets of other nozzles so that, during use of the distributor, the contour of the bottom of the fluidized bed is substantially defined between the fluid outlets, and the bottom contour of the fluidized bed has a discrete downward depression surrounding each of those nozzles having fluid outlets at a lower level than the level of fluid outlets of other nozzles, and at least one conduit having an end which is within or above the location of a respective downward depression in the said bottom contour and which extends therefrom below the level of the bottom contour of the fluidized bed at least to a position at the side of the distributor or fluidized bed volume for connection to a source of a second fluid. As applied to the partial combustion of fuel in a gasifier, the fuel which may be oil or pulverised coal suspended in gas or liquid is injected by line 20 into the neighbourhood 21 of one or more low-level nozzles where there is a depression in the base of the bed 13 of particles of lime fluidised by the admission of air through the nozzles 17.
Patent GB-1520422-A (GB)
Title: Industrial lubricant
IPC: C10M169/04
Filed: 1974-10-31
Abstract: 1520422 Lubricants EXXON RESEARCH & ENG CO 24 Oct 1975 [31 Oct 1974] 47154/74 Heading C5F A lubricating oil comprises a mixture of (i) a tetraester of pentaerythritol with a C 16  to C 20  openchain aliphatic monocarboxylic acid, and (ii) an inorganic phosphorus acid or its anhydride or an alkyl acid phosphate in which the or each alkyl radical contains 1 to 4 carbon atoms. The amount of (ii), calculated as phosphorus, is from 0.01 to 0.5% (wt.) of the weight of (i). The oil may be emulsified in water by the aid of an emulsifier and mineral oil, and may be used as a lubricant in the hot or cold rolling or working of metals or as a mould lubricant.
Patent GB-1248445-A (GB)
Title: Improvement in or relating to lamps
IPC: F21V7/00
Filed: 1968-10-04
Abstract: 1,248,445. Vehicle headlamp. PROJECTEURS CIBIE. 4 Oct., 1968 [5 Oct., 1967], No. 47196/68. Heading F4R. A lamp with a masked beam comprises a reflector having an upper zone and a lower zone respectively generated by rotation about a central axis of two parabolic generatrices with focal rings which are eccentric to the central axis and which lie in planes perpendicular to the axis and pass respectively through one or the other end of a light source which is in the form of a cylinder tangential to the axis. A reflector 2 is constituted by two parabolic surfaces 2a, 2b. The surface 2a is generated by rotation about central axis AA of the parabola Pa having a focus Fa which forms a focal ring (fa, Fig. 1 not shown) when the parabola Pa is rotated. The surface 2b is likewise formed from parabola Pb having a focus Fb and a focal ring (fb, Fig. 1). A mask is provided around the light source 1, part of the mask 3a being cup-shaped with its front edge lying along the focal ring (fa) and the cup extending behind the ring. Another part of the mask 3b is cup-shaped with its rear lying along the other focal ring (fb) with the cup exstending in front of the ring. The mask also has sides (4, 5) which join parts 3a and 3b and shield the side of the source 1.
Patent GB-1325573-A (GB)
Title: Injection moulding machines
IPC: B29B7/60
Filed: 1970-10-06
Abstract: 1325573 Injection moulding BRITISH UNITED SHOE MACHINERY CO Ltd 6 Oct 1970 [6 Oct 1969] 47357/70 Heading B5A An injection moulding machine comprises a plurality of mould stations, at each of which is mounted a mould assembly, injection mechanism indexable to be operatively associated with each mould in turn, the injection mechanism comprising a metering chamber and control mechanism comprising one control member corresponding to each mould station and a sensing device to engage the control member corresponding to the appropriate mould station to determine the quantity of material delivered from the metering chamber to the mould cavity when a mould assembly comes into operative association with the injection mechanism. The description is substantially identical with that of Specification 1,325,572.
Patent GB-1397837-A (GB)
Title: Reading device for articles bearing colour marks
IPC: B07C5/34
Filed: 1972-10-13
Abstract: 1397837 Photo-electric reading device E SICK 13 Oct 1972 [18 Oct 1971] 47364/72 Heading G1A [Also in Division G4] In a device for reading coloured marks 14 on an object 11 the marks are illuminated by at least one light beam incident obliquely on the object surface, Fig.1 (not shown) and an optical system 13 projects respective images of the marks on to a revolving shutter 16 having at least one aperture 17 smaller than or equal to each image, there being a photo-cell arrangement 43-45 for detecting the colours of the marks. Preferably there are two illuminating beams derived from a single halogen-filled lamp. The images are scanned in sequence across a slit 17, Fig.5 (not shown). Commencement and completion of each scan across a set of images are identified by marking pulses derived from two photo-cells 36, 37 and a light source 38 which co-operate with two concentric sets of apertures (39, 40) in the top of the shutter. Light passing through each aperture 17 is separated into its primary colours by a dichroic mirror 42 and respective filters 46, 47. By rotating the shutter at high speed - 3,000 rpm - a succession of objects moving in the direction of the arrow may be decoded.
Patent GB-1484324-A (GB)
Title: Railway wagon having a detachable superstructure
IPC: B61F1/10
Filed: 1974-11-01
Abstract: 1484324 Railway wagons; underframes SOC MOBILIERE INDUSTRIELLE 1 Nov 1974 [9 Nov 1973] 47414/74 Heading B7L A railway wagon comprises a superstructure S detachably mounted on two spaced substructures C interconnected by longitudinal rods L, the superstructure and substructures have interengaging male and female parts 1, 2, each female part 2 including spring-loaded pivoted plates 5 engaging the edges of the male part 1 and holding it in position. Each end of the superstructure includes two laterally spaced male members 1 and an intermediate post 3, the latter engaging a central aperture in the associated substructure to locate the superstructure in position during assembly. Each substructure C carries a latch 18 co-operating with a keeper 19 on the superstructure, a safety device 20 preventing inadvertent operation of the latch when the wagon is assembled.
Patent GB-1507945-A (GB)
Title: Suction cleaning nozzle
IPC: A47L9/02
Filed: 1975-03-04
Abstract: 1507945 Suction cleaner nozzles HOOVER Ltd 4 March 1975 [4 March 1974] 47714/77 Divided out of 1507944 Heading A4F The nozzle is identical with that described in the Parent Specification but is claimed from a different aspect.
Patent GB-1278064-A (GB)
Title: Improvements in or relating to tapholders
Inventor: DERBYSHIRE GEORGE CECIL
IPC: B23B31/10
Filed: 1968-10-08
Abstract: 1278064 Tapholders JACOBS MFG CO Ltd 8 Oct 1969 [8 Oct 1968] 47722/68 Heading B3N A tapholder has a body 2 having channels 12, 14 in a cylindrical portion 10, apertured members 4, 6 are slidable in the channels which are of different depths so that member 4 can slide over member 6, a cover 8 fits over the cylindrical portion 10 and comprises an end plate 18 and a sleeve 16 to retain the members in the channels, axially and radially respectively. A tap shank enters the holder by a hole 20 and then passes through apertures 28 and 30, grub screws 36, 38 are used to retain the tap in the holder. The screws are operated through holes 40, 42 and these holes are either slightly offset with respect to the screws or are of slightly smaller diameter than the screws so that the screws cannot be disengaged from the members 4, 6 whilst the cover 8 is positioned on body 2. The sleeve 16 may be separate from the end plate 18 and may be moulded from a synthetic plastics material such as nylon. The body has a spigot 44 with a threaded bore for mounting to a machine tool. Member 6 has a cylindrical, flat bottomed recess 31 such that the depth of the aperture from the bottom of the recess inward is no greater than the length of the usual square section at the end of the shank of the smallest tap which the tap - holder is designed to accept.
Patent GB-1480859-A (GB)
Title: Block ciphers
IPC: G06F21/14
Filed: 1975-11-24
Abstract: 1480859 Data transmission; ciphering INTERNATIONAL BUSINESS MACHINES CORP 25 Nov 1975 [24 Feb 1975] 48157/75 Heading H4P In apparatus for ciphering an initial message block of data bits under the control of a set of cipher key bits, a first half of the message block is stored in a first store and a second half in a second store. The first half is then processed as described in Specification 1,480,858 to produce a product block cipher which is used to modify the second half of the message block. The modified second half is then loaded into the first store, with the concurrent transfer of the first half into the second store. The whole process is then repeated for a predetermined number of iteration steps, the cipher key bits being shifted to produce a new set of cipher key bits for each iteration, the result of the last iteration being a cipher of the original message block of data. Deciphering is effected by a similar operation.
Patent GB-1200395-A (GB)
Title: Improvements in or relating to telecommunications cables
IPC: H01B7/288
Filed: 1968-10-11
Abstract: 1,200,395. Cables. SIEMENS A.G. 11 Oct., 1968 [27 Nov., 1967], No. 48256/68. Heading H1A. In a cable with a core of wires having synthetic resinous insulation, axial penetration of water is prevented by the swellable property of a mixture of two components, one fastacting and less viscous, and the other slowacting and more viscous, loosely packed along the full length of the cable in the space between the wires. Suitable materials are methyl cellulose, carboxy methyl cellulose, animal and vegetable starches, pectines, alginates, tragacanth, agar-agar, cross-linked dextran and derivatives of glucose or mannose, polyoxethylenes, polyvinylpyrrolidone, polyvinylmethylether, ammonium and sodium salts of polyacrylic acid and bentonite. To place the mixture the core may be passed through a suspension of the mixture in a highly volatile, non-aqueous liquid such as a halogenated hydrocarbon having a boiling point less than 55‹ C. to impregnate it, and this is followed by the vaporization of the liquid. Alternatively the mixture may be forced by compressed air into the interstices of the core. After placement a tape is wound round the core to prevent the mixture from falling out.
Patent GB-977886-A (GB)
Title: Scaffold frames
Inventor: BRADLEY JOHN FREDERICK
IPC: E04G7/30
Filed: 1962-12-24
Abstract: 977,886. Scaffolding. WELLINGTON ENGINEERING WORKS Ltd. Oct. 28, 1963 [Dec. 24, 1962], No. 48568/62. Heading E1S. In a scaffolding frame having a seat 5 in the angle between two tubes 3, 4 against which a scaffold tube 9 is clamped by a pressure plate 8 moved by a screw 7 in a support 6 mounted on the tube 3, the pressure plate 8 has a slot the cross-bar 8c at the end of which is secured in an aperture 6b in the support. The bar 8c is engaged with the aperture 6b, which is a notch in the edge of the support, before this edge is welded to the tube 3. Specification 977,887 is referred to.
Patent GB-1027928-A (GB)
Title: Flexible shaft casing
IPC: F16C1/26
Filed: 1964-11-30
Abstract: 1,027,928. Flexible tubes. STEWART WARNER CORPORATION. Nov. 30, 1964 [Nov. 29, 1963], No. 48606/64. Heading F2P. A casing for a flexible shaft comprises an inner tube 30 of flexible material, such as nylon or a molybdenum disulphide treated plastics, a plurality of wires 36, 38 wound in opposing helices over the tube in an open pattern to leave areas of the tube uncovered and an outer cover 34 of flexible material such as polypropylene, polyethylene or vinyl over the tube and wires. The latter are keyed in position by the material of the cover in the openings between the wires. The wires may be helically wound to define open interstices 40, or the wires are braided or interwoven.