baber/WOPTO huggingface dataset:
Patent GB-986761-A (GB)
Title: Aluminum-magnesium-silicon alloy
IPC: C22C21/08
Filed: 1961-08-03
Abstract: An alloy having good machinability and resistance to stress corrosion 1-2.5% Mg2Si with a permissible excess of Mg or Si so that the Si is 45-65% of the Mg content; Bi 0.4-0.75% ; Pb 0.4-0.75% ; Al the remainder. The alloy may also contain: Cu 0.1-0.5% ; Mn 0.1-0.5% ; Cr 0.02-0.3% ; Ti 0.01-0.25% and may be solution treated at 920-1075 DEG F. and precipitation hardened at 275-450  DEG F. for 1-24 hours. Cold working may be effected before or after the precipitation hardening step.
Patent GB-464112-A (GB)
Title: Photographic process
IPC: G03G17/02
Filed: 1935-10-12
Abstract: 464,112. Electrically producing photographs. GOLDMANN, F. Oct. 12, 1935, No. 28240. Convention date, Oct. 13, 1934. [Class 98 (ii)] In a process for the production of pictures, an electrolytic layer is placed in contact with a semi-conductor layer in contact with a metal electrode, a counter-electrode is placed in contact with the electrolytic layer, connection between the electrodes is established by a source of current, and an image is projected on the semi-conductor layer, the electrolytic layer being such that when a current passes through it, the material of the semi-conductor layer or of the counter-electrode is caused to enter into a chemical reaction in order to form an image in the electrolytic layer. As shown, G1, G2 are glass or celluloid plates, M1, M2 are metallic layers, H is a cuprous oxide or selenium semi-conductor layer, and E is an electrolytic layer comprising gelatine soaked in a non-light-sensitive salt solution. The metallic layers M1, M2 are connected to a current source V through a circuit comprising a switch K and a resistance W. The connections to the source of current may be reversed. The image in the electrolytic layer may be strengthened by chemical treatment or physical development. The image may also be strengthened by continued electrolysis in the absence of light. The image may be removed by reversed electrolysis, or influenced locally by a needle or bracketshaped electrode. Alternating or interrupted current may be used.
Patent GB-1007083-A (GB)
Title: Liquid level indicators
IPC: G01F23/24
Filed: 1964-07-08
Abstract: 1,007,083. Liquid level indication. FORD MOTOR CO., Ltd. July 8,1964 [July 11,1963], No. 28240/64. Heading G1H. In a liquid level indicator a thermistor assembly 26 in circuit with a relay and comprising a metal housing 28 provided with a plurality of apertures 30, 32 contains a thermistor 34 which is normally immersed in the liquid the level of which is to be indicated and the arrangement is such that the change in current through the relay when the thermistor 34 is no longer immersed in liquid will cause a warning light to be energized: at float 12 is also provided and is connected by a link 14 to a variable resistance or potentiometer that transmits a signal proportional to the float position to a fuel gauge.
Patent GB-750299-A (GB)
Title: Methods of electrostatically spray-coating articles
IPC: B05B5/08
Filed: 1952-11-10
Abstract: <PICT:0750299/III/1> <PICT:0750299/III/2> <PICT:0750299/III/3> <PICT:0750299/III/4> Articles with projecting points or edges are electrostatically spray-coated by positioning particle-emitting means to discharge a spray of finely atomized coating particles towards the article to be coated, and arranging a discharge electrode in spaced relationship to the article, the negative pole of a high-voltage source being connected to the discharge electrode, and the positive pole connected directly or indirectly to the article or to a counterelectrode associated therewith, the discharge electrode, the counter-electrode, or both, being so shaped and located that a concentration of the lines of force is obtained at the projecting points or edges at the surface of the article.  In this manner, a heavier coating, as shown in Fig. 8, may be obtained at the edges or corners.  The discharge electrodes may take the form of wires 2, 2a (Fig. 1) disposed opposite the portions of the article 1 which are to receive a heavier coating or, as shown in Fig. 5, the discharge electrode may be in the form of an annulus 9, having inwardly projecting points.  Elongated articles may be moved continuously through the coating zone.  If the article 15 (Fig. 7) is non-conducting, a counterelectrode 16, which may or may not have an insulating cover, is inserted within the article on the side remote from the discharge electrode 13.
Patent GB-1338352-A (GB)
Title: Process for the thermal cracking of hydrocarbons
IPC: C07C5/32
Filed: 1972-06-16
Abstract: 1338352 Resistance heating elements EUROPEAN ATOMIC ENERGY COMMUNITY 16 June 1972 [21 June 1971] 28285/72 Heading H5H [Also in Division C5] A resistance for use in cracking hydrocarbons comprises a plurality of pyrolytic graphite segments through which the current flows perpendicularly to the plane of growth, the connection ends of the resistance consisting of normal graphite of poor thermal conductivity and good electrical conductivity. The surface power may be at least 30 watts/cm<SP>2</SP>. The resistance may be covered with a layer of ceramic material or with a thin metal coating.
Patent GB-708366-A (GB)
Title: Improvements in or relating to time base deflection amplifier circuits
Inventor: JOHNSON LEONARD REGINALD JOFFR
IPC: H03K4/43
Filed: 1951-12-03
Abstract: 708,366. Saw-tooth generating circuits; valve amplifying circuits. ENGLISH ELECTRIC CO., Ltd. Aug. 5, 1952 [Dec. 3, 1951], No. 28324/51. Class 40 (6) The output transformer of a saw tooth wave amplifier has two tertiary windings connected in series opposition and which respectively apply positive and negative feedback through time constant circuits to correct distortion in the output wave. The correcting networks shown are integrating circuits, that in the positive feedback path having a time constant equal to that of the reflected load resistance of the deflecting coils and primary inductance of the transformer and that in the negative feedback circuit having a time constant equal to that of the deflector coil inductance and resistance including the secondary leakage inductance and loss resistane of the transformer. A primary-tertiary turns ratio of 1:1 may be used and the negative feedback at low frequencies should be equal to the positive feedback to ensure stability. As the negative feedback is such as to increase the output impedance of the amplifier it is unnecessary to add a negative pulse to the input wave during the flyback. The time constant of the primary inductance and effective primary load resistance should be greater than half a period of the wave.
Patent GB-1473179-A (GB)
Title: Apparatus for suppressing rotational oscillations of web supply rolls
IPC: B65H23/182
Filed: 1974-06-26
Abstract: 1473179 Feeding webs NISHIMURA SEISAKUSHO CO Ltd 26 June 1974 [26 June 1973] 28402/74 Heading B8R An apparatus for suppressing angular oscillations of a web roll from which is unwound an adhesive tape 14, Fig. 3, using a pair of driven rollers 18, 20, of which the roller 20 is pressed into contact with the roll 10 by a fluid cylinder actuated arm 24, comprises a differential gear DG, having a pair of input shafts 30, 36 and an output shaft 38, Fig. 2, a motor drive connected to the first input shaft 30 and the drive rollers 18, 20 for rotating the shaft and rollers at a constant speed and a variable speed drive 34 connected to the web roll shaft 12 and to the second input shaft 36, the output shaft 38 being connected to an hydraulic clutch C for retarding the rotary movement of the shaft 38 and generated as a function of the difference in speed between the first and second input shafts of the differential gear. The tendency to oscillation is indicated by the rotary movement of the shaft 38 and to counteract this tendency the shaft 38 is provided zith a variable speed gear control 40 which controls speed drive 34 such as to allow the shaft 12 to drive the variable speed drive 34 or to be driven thereby at a higher speed depending on the tension in the web 14 induced therein by the difference of adhesion of the adhesive web to the roll.
Patent GB-929092-A (GB)
Title: Improvements in and relating to window air filters
IPC: E06B7/03
Filed: 1960-08-16
Abstract: 929,092. Ventilating; air-filtering. C. F. GYSI. Aug. 4, 1961 [Aug. 6, 1960; Sept. 29, 1960], Nos. 28412/60 and 33414/60. Class 137. A window air-filter comprises a rectangular telescopic holder having one or more apertured central sections carrying a filter medium and two box-like end members. As shown, Fig. 1, the holder comprises a central section A which fits within two end sections B, C having rebates 23, 24 enabling them to be fitted in the grooves of the frame of a sash window, Fig. 3. The interior of the holder may be filled with material such as cotton wool or gauze and the material may be scented or sterilized. Alternatively, the filter medium may comprise gauze contained in open-sided cartons or a sheet having an adhesive border. In the latter case, the central portion of the holder may be solid and have the filter material stuck on to the outside. Other forms of holder are described. For example, the central section 45 may have raindeflecting louvres 46, Fig. 7, or cheese-grater perforations on its outer side and a large aperture with a snap-engaging removable cover (not shown) on its inner side, the end member 51 having a louvre-clearing enlargement 52. The holder may have a number of inter-engaging central sections.
Patent GB-698410-A (GB)
Title: Conveyors
Inventor: HEAD ALEC
IPC: B65G17/06
Filed: 1949-11-07
Abstract: 698,410. Endless conveyers. G. W. B. FURNACES, Ltd. Nov. 7,1950. [Nov. 7, 1949] No. 28512/49. Class 78 (i). An endless conveyer belt is provided with readily removable side plates which are pressed resiliently against the edges of the belt. The figures show the application to a conveyer for removing nuts or bolts from a quench tank wherein the belt is supported between endless chains 2 provided with rollers 6 running on tracks 3. The belt of woven wire mesh is supported at intervals by channel members 17 extending the full width of the belt and which are secured by bolts to pins 18 extending about halfway across the belt and which engage in the pins 5 of the chains 2. Plates 20 are secured at each side of the belt to prevent articles falling off, each plate having pairs of holes engaging over pins 21 on the members 17 and being held resiliently against the edge of the belt by a collar 24 slidable on a pin 18 and engaged by a spring 26 bearing against a washer 27 held in position by a pin 28 extending transversely through the pin 18. The chains 2 and their tracks 3 are protected by guards 33 to which are attached guide strips 34 bearing lightly against the plates 20. The conveyer framework 30 is provided with rollers 32 which engage channel guides 31 on the quench tank. Cross flights 19 are provided on the belt.
Patent GB-321038-A (GB)
Title: Improvements in or relating to vises
IPC: B25B1/12
Filed: 1929-07-03
Abstract: 321,038. Peel, J. P., and Kingsley, S. July 8, 1929. Vices.-The half nut 2 of a releasable nut vice is mounted in a recess in the base 4 of the fixed jaw 6 and held normally in engagement with the buttress threaded vice screw 1 mounted in the slide 8 by a spring 3. A ratchet wheel 16 mounted loosely on the rear end of the screw 1 coacts with rack teeth on the rear end of a longitudinally arranged bar 20 pivoted at 19 in such way that counter-clockwise rotation of the screw first releases the grip and then rotates the ratchet wheel 16 through a lost motion device in the form of a projection 18 on the screw engaging a projection on the ratchet wheel, the rotation of the latter depressing the rack end of the bar 20 which presses the half nut out of engagement with the screw.
Patent GB-243166-A (GB)
Title: Improvements in or relating to grinding, milling and pulverizing apparatus
IPC: B02C13/288
Filed: 1924-11-28
Abstract: 243,166. Ramsay, R. K., and Mayhew, M. J. Nov. 28, 1924. Impact pulverizers.-In a grinding, milling, or pulverizing machine comprising a grinding-chamber and a battery of loosely-mounted impact elements, the blades of the suction fan or blower are mounted so that they can yield in the event of any unyielding object being sucked from the grinding-chamber by the fan. Preferably the fan or blower is fitted with pivoted arms or blades. As shown, the curved blades of the fan 10, Figs. 1 and 3, are pivoted at their inner edges on spindles or bolts 11 concentrically disposed about the main shaft 4 of the machine. The spindles may be mounted in discs on the shaft and the blades be disposed between the discs. The impact. elements 6 are square plates with scalloped edges and are carried by bolts 7 passing through spaced discs 5 secured to the shaft 4. The openings 8 in the elements are shown cruciform in shape, but they may be substantially square, to allow of radial outward movement of the elements. The elements may be circular of polygonal with their edge or edges preferably notched or serrated. The lower part of the cylindrical wall 9 of the grinding-chamber 1 is formed as a screen through which the pulverized material passes into the outlet passage 3 along which it is drawn by the fan 10. A transverse guard in the feed-shoot 2 prevents stones &c. from passing with the barley or other material into the machine. The chamber 1 may be provided with a wall partly perforated and partly imperforate as described in Specification 235,955.
Patent GB-976278-A (GB)
Title: Rectifier stack, especially power rectifier stack
IPC: H01L25/03
Filed: 1963-07-19
Abstract: 976,278. Semi-conductor rectifier assemblies. STANDARD TELEPHONES & CABLES Ltd. July 19, 1963 [July 21, 1962], No. 28620/63. Heading H1K. Each rectifier element 3 is accommodated at the closed end of a recess 4 in a solid metal member 1 and has one face in electrical contact with the metal at the end of the recess, the rectifier element 3 being insulated from the walls of its recess 4 by an insulating member, such as a tube 5, which projects out of the recess so as to act as a spacer between its metal member 1 and an adjacent metal member 6 or an end plate of the assembly; the insulating member 5 also acts as a guide for the contactmaking means, which may comprise a spring 7 and a graphite disc 8, applied to the other face of the rectifier element 3. Each metal member 1 has two or more recesses containing insulating members 5 to act as spacers, even if not all the recesses contain rectifier elements, and the assembly is held together by a bolt or plastic rivet passing through a central bore 2.
Patent GB-747691-A (GB)
Title: Improvements in or relating to electric cables and wiring systems
Inventor: FRANCIS ERIC ROLAND
IPC: H01B7/22
Filed: 1953-10-19
Abstract: 747,691. Suspending cables. CABLES & PLASTICS, Ltd. Oct. 14, 1954 [Oct. 19, 1953], No. 28763/53. Class 36. A cable comprises at least one conductor 2 embedded in insulation 3 and at least one catenary wire 5 lying parallel to but spaced from the conductor and embedded in a ridge or ridges 4 formed on the covering 3. The ridge 4 may be separated from the covering 3 at suspension points to form loops to hang over hooks. Alternatively the cable may be suspended from a clip comprising two plates 8, 9 having gripping tongues 10, 11 which embrace the ridge 4 when bolt 12 is tightened. Auxiliary securing screws 23 and locating lugs 14 may be provided. At a junction-box the ridge 4 may be separated from the covering 3 and the loop thus formed gripped by a securing collar mounted on the box. Alternatively the catenary cable may be severed and a cleat provided to grip the end portions of the ridge 4, which are separated from the covering 3. Grooves 25 may be formed in the covering to enable the parts to be readily separated. The catenary wire may be used as an earth conductor in which case it comprises some strands of high tensile steel and some strands of aluminium or copper.
Patent GB-257456-A (GB)
Title: Improvements in metal drums and like containers
IPC: B65D8/08
Filed: 1925-11-16
Abstract: 257,456. Brough, E. A. Nov. 16, 1925. Rodies; ends, and binding- hoops.-A sheet metal drum, keg, barrel or like container is strengthened by peripheral bands or hoops 10 which are shrouded bv the bodv 6 and an welded to the rims of the dished-ends 8. The bands 10 are formed integrally with the body 6 by doubling the ends of the body inwardly. Longitudinal strengthening ribs may be applied inside the body. Integral strengthening bands 10 may be used conjointly on the body and the dished-ends and the flush outer edges may be welded together.
Patent GB-1357378-A (GB)
Title: Anti-friction member for inclusion in a tape or film cassette
IPC: G03B17/26
Filed: 1971-06-18
Abstract: 1357378 Antifriction member comprising carbon fibres KUREHA KAGAKU KOGYO KK 18 June 1971 [18 June 1970] 28799/71 Heading C1A [Also in Divisions C3 D1 G2 G5 and D2] A tape or film cassette comprising outer frame 5, shafts 4, reels 2 and tape 1 has an antifriction member 3 disposed between the tape and the reels which member comprises a thermoplastic resin containing 5 to 90% by weight of carbon fibre, and has a volume resistivity of less than 10<SP>8</SP> ohms. The fibre may be graphitized or non- graphitized fibre and have an electrical specific resistance less than 10<SP>-2</SP> ohm/cm. and a diameter of 3 to 30 microns. The thermoplastic resin may be a fluorocarbon, polyacetal, polyamide, polyolefin, polyester or polycarbonate. The fluorocarbons polytetrafluoroethylene, polyvinylidene fluoride, polyvinyl fluoride are particularly specified. In a particular embodiment, the antifriction member is formed so as to have an uneven surface comprising microscopic concavities and convexities with minute projections of carbon fibre on the surface, whereby the dynamic coefficient of friction and the volume resistivity of said member are 0À07 to 0À15 and 2Î10<SP>2</SP> ohms to 3Î10<SP>2</SP> ohms respectively. In a particular example polyethylene powder and carbon fibre of stated properties were mixed and extruded through a heated T- shaped die, the primary sheet so formed being taken up on a heated roll. This primary sheet was then placed between two sand blasted stainless steel sheets which had been plated with chromium in a stain finish where stain finish is defined as a polishing method which produces a final surface containing microscopic concavities and convexities, and the sandwich so obtained rolled through heated rollers to produce a sheet of a thickness (e.g. 0À1 mm.) considerably less than the average length (e.g. 3 mm.) of the carbon fibres used in forming the sheet, thus producing the desired sheet of uneven surface and stated properties. In another example nylon fibres, and polyvinyl alcohol fibres were used to bind the carbon fibre, the initial sheet being formed as a web using paper making techniques.
Patent GB-1434131-A (GB)
Title: Rolling process
IPC: B21H1/14
Filed: 1973-06-18
Abstract: 1434131 Die rolling XEROX CORP 18 June 1973 [26 June 1972] 28834/73 Heading B3M A profiled cylindrical roll 1, which may be used for applying liquid developer on to an electrostatically charged photoreceptive surface, is profiled by urging an impressing tool 2 into the roll while the roll is supported by a backing roll 3 having a resilient, abrasion resistant surface. The tool may impress a trihelicoid thread pattern into the roll having 180 t.p.i., 45 degrees lead, 0À0055 inch pitch, 0À001 inch top land, and 35 to 65 micron depth. The roll may be 1 inch diameter, 9 inches long (length), and the backing roll 3À5 inches diameter and 1À5 inches long. The material of the impressed roll may be aluminium alloy, low carbon steel, carbon and alloy-soft leaded steel, soft stainless steel, brass, copper, or copper base alloy. The backing roll may have a resilient shell on a metal core, the shell having a hardness from about 40 Shore A to 100 Shore D durometer. The material of the shell may be a mixture of diisocyanates and polyethers or polyesters mixed together and reacted with a curing agent. A list of suitable elastomeric compositions is disclosed, including polyurethane, polyisoprene, and polybutadiene. The impressing process is suitable for coating rolls as well as gravure printing cylinders.
Patent GB-1071822-A (GB)
Title: Thermostatically operated fluid flow valves
IPC: F16K31/68
Filed: 1964-07-13
Abstract: 1,071,822. Valves. DANFOSS A/S. July 13, 1964 [July 13, 1963], No. 28867/64. Heading F2V. [Also in Division G1] A thermally actuated unit having a spindle 6 for actuating a valve spindle 4 comprises a housing 2 having an extension 1 for fixture to the valve body, a casing 8 attached to the housing at 13 and surrounding a bellows 9 which has a movable end wall 10 abutting the spindle 6 and a fixed end wall 11, a spring 14 confined between the end wall 10 and an adjustable seat 15 which extends radially through the walls of the housing and carries a threaded rim 17 which engages a rotatable knob 20 having an end wall 25 and spaced ribs 21 urged by the spring into contact with the casing at 22. The end wall 25 has a hole 26 therethrough to allow air to circulate freely over the end wall 27 of the casing between which and a partition wall 29 is the fluid filling 28. An indicating mark may be provided on wall 27 and a scale on wall 25. A pin 23 limits the movement of the spring seat. In the alternative embodiment of Figs. 3 and 5, the casing has an inner tube (45) to limit contraction of the bellows and a stop (61) which coacts with adjustable stops (74, 75) provided on the knob to limit the angular movement thereof, stop (74) being a part of an end face (63) and stop (75) a part of a ring (64) having teeth (71) which engage teeth (70) in the end face, which also has a further ring of teeth (67) to engage teeth (66) in the cylindrical part of the knob (62) and is fitted thereto by a rim (69) by engaging notches (68). In either embodiment, radial guides (80) may be provided for the knob.
Patent GB-1137793-A (GB)
Title: Polymerization of butadiene
IPC: C08F36/06
Filed: 1967-06-22
Abstract: 1,137,793. Butadiene polymers. POLYMER CORP. Ltd. 22 June, 1967 [9 July, 1966], No. 28874/67. Heading C3P. A solution of a cis-1,4-polymer of butadiene containing less than 10% of a mono-alkenyl aromatic copolymerized with the butadiene, in a mono-alkenyl aromatic hydrocarbon, is made by contacting a mixture of butadiene-1,3 and a mono-alkenyl aromatic hydrocarbon with a catalyst soluble in hydrocarbons, and formed by admixing a salt of a Group VIII metal and an aluminium dihydrocarbyl halide, deactivating the catalyst, removing residual butadiene monomer, and recovering the solution. The mixture of diene and aromatic hydrocarbon may also contain a volatile non-polymerizable olefin. The polymerization may be effected in bulk or in a hydrocarbon solvent. The solution of the diene polymer in the mono-alkenyl hydrocarbon may be subsequently polymerized to produce an impact resistant thermoplastic composition, e.g. in presence of a free radical initiator. Specified aromatic hydrocarbons are styrene, vinyl toluene, alpha-methyl styrene, and allyl benzene. The salt of a Group VIII metal is preferably of cobalt, e.g. cobalt octoate, naphthenate, stearate, dodecyl sulphonate, or oleate. The hydrocarbon solvent may be butane, hexane, cyclohexane, or non- polymerizable olefins such as butene-1, cyclohexene, butene-2, allene, or butadiene-1,2. The polymerization may be batchwise or continuous, and the catalyst may be preformed or formed in situ. Prior to the removal of volatile ingredients the catalyst is deactivated by conventional techniques. For the formation of the impact resistant polymer the initiator may be benzoyl peroxide, and prior to this polymerization, additives such as paraffin wax, mineral oil, fatty acid soaps, mercaptans, and antioxidants, may be added to the solution.