baber/WOPTO huggingface dataset:
Patent GB-504404-A (GB)
Title: Improvements in or relating to pipe joints
IPC: F16L29/04
Filed: 1937-11-03
Abstract: 504,404. Pipe joints; valves. DUN LOP RUBBER CO., Ltd., WRIGHT, J and TREVASKIS, H. Nov. 3, 1937, No. 30073. [Class 99 (i) [Also in Group XXIX] In a spigot-andsocket joint in which each part has a valve which is opened when the parts are coupled, the socket 2 has a spring-loaded annular valve member 8 which engages a conical seat 7. The valve has a cup leather 13 expanded by a wedge ring 12. On coupling, the end of the spigot 18 raises the valve 8, and a valve 20 is raised from its seat in the end of the spigot by the valve-seat 7. A flange 16 on the spigot compresses a gasket 25 at the mouth of the socket. In a modification the stem 6a of the seat 7 is removably held in the socket by a split bush 26 and cap 27, the socket having a swivel coupling 28. Specification 491,630 is referred to.
Patent GB-1508249-A (GB)
Title: Adjustable equalizing networks
IPC: H03H7/01
Filed: 1976-07-20
Abstract: 1508249 Adjustable equalizers TEKADE FELTEN & GUILLEAUME FERNMELDEANLAGEN GmbH 20 July 1976 [26 July 1975] 30108/76 Heading H3U An adjustable equalizer comprises an input transformer T1 having a winding across which is connected a voltage divider R o , R, the winding being tapped at 2 so that W 1 /W 2 =R o /R, and a plurality of adjustable elements each comprising a resistor R x , an inductor L x , and a differential capacitor C x , first stators of the differential capacitors being connected to a first winding of a differential transformer T2, and second stators of the differential capacitors being connected to a second winding of T2, the differential transformer being connected between tapping 2 and the junction of resistors R o , R. Groups of adjustable elements may be interconnected by means of hybrid circuits (Figs. 2, 3, not shown).
Patent GB-482318-A (GB)
Title: Improvements in or relating to the sealing of electric conductors through quartz or hard glass
IPC: H01J5/32
Filed: 1936-11-06
Abstract: 482,318. Sealing leading-in conductors into quartz envelopes. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. f³r Elektrische. Gl³hlampen) Nov. 6, 1936, No. 30274. [Class 36] [Also in Group XL] In making a seal between an envelope 1 of quartz, or other very hard glass, and one or more electric conductors of oxidizable metal which attain a high temperature during the operation of the device and are introduced into the envelope through an elongated vitreous sealing tube 7, the central portion of the tube 7 is expanded to form a chamber the walls of which are spaced from the part 9 of the leading- in.conductor, and the chamber is filled with neutral gas or evacuated. The parts 6, 10 of the leading-in conductor in contact with the vitreous material consist of thin molybdenum strips which are sealed therein in known manner, their inner ends being connected by the part 9 which lies within the chamber 8 and consists of thicker strip. The inner ends of the strips 6 are connected to tungsten electrode-supporting wires, and the outer ends of the strips 10 to tungsten or molybdenum leads 11. The upper electrode is surrounded by a quartz hood 12 to prevent the deposition of sputtered material upon the envelope wall. In order to conserve heat a silvered coating 14 provided on the upper part of the envelope. Two leading- in conductors may be carried side by side through the same sealing tube 7 and chamber 8 and either connected to the same electrode or different electrodes. Specifications 207,590 and 211,862, [both in Class 39 (ii)], are referred to.
Patent GB-1079995-A (GB)
Title: Brush fibre package and method of producing same
IPC: A46B3/00
Filed: 1964-08-04
Abstract: 1,079,995. Brush bristle package. G. SHAW, and C. H. ANDERSON. Aug. 4, 1964 [July 17, 1963], No. 30461/64. Heading B8C. Brush bristles are enclosed in open-ended wrappers, the wrappers being folded to U- shape prior to filling with bristles and then flap portions being folded in and joined or the top of the U closed by tape, the bristles being parallel and the outer of them corresponding in length with the wrapper. A long package may be cut into shorter sections, the cuts being other than normal to the bristle axes, if desired, to produce a content of graduated lengths. Bristles in a parallelepidic pack 18 may be tamped against a curved or straight sloping member 32 and the pack then cut as at 37 to produce two graduated length packages. Cylindrical packages may be squared in section in the area of severence before cutting to produce smaller packages of graduated bristle lengths in which, as in the parallelepidic packs, the proportion of each length of bristle relative to other lengths is the same. A pack as in Fig. 4 may be placed in an open topped holder, Fig. 6, the seamed portion cut off at 14a and the contents tipped into a brush-forming machine magazine. A tubular sleeve may protect the open ends of the package.
Patent GB-981733-A (GB)
Title: An improved shaft sintering method
Inventor: SCHENCK HERMANN
IPC: C22B1/214
Filed: 1962-08-09
Abstract: <PICT:0981733/C1/1> The operation of a shaft furnace described in the parent Specification (wherein a central core of sintered ore is fed axially down the shaft and raw material is fed, admixed with fuel, as an annulus therearound, combustion air being passed radially inwards and combustion products withdrawn axially through the core) is facilitated by providing a pressure chamber above the sintering zone and maintaining therein a pressure approximately equal to and preferably slightly above the pressure in the sintering zone thereby preventing escape of gases into the incoming charge.  As shown in the Figure, a shaft furnace 1 is fed with coarse grained sintered core material and with a raw ore and fuel charge from an annular feed compartment 18. Air is drawn in laterally into the sintering zone through a perforated wall 2 and combustion products are withdrawn upwardly through the coarse sintered core material.  A pressure chamber 16 separates the bulk of fresh charge 5 from the top of the sintering zone, the pressure chamber being bounded on the inside by the core feeding means and on the upper side by the incoming charge 5 and the charge feeding means 17 which coact to form an effective pressure seal. Alternatively a gas-tight feeding means could be provided.  The feed device 17 may be of any conventional type but it is preferred that the ore rolls down a sliding surface as shown before entry to the sintering zone thereby concentrating coarser grains of the charge in the neighbourhood of the central core.
Patent GB-341083-A (GB)
Title: Improvements in and relating to processes for decolorising phenol-formaldehyde artificial resins condensed by means of ammonia
IPC: C08G8/28
Filed: 1929-10-09
Abstract: Phenol-formaldehyde condensation products when made by using ammonia as the condensing agent are obtained as colourless products by the use of dithiocarbamates of strong bases added either before or after the condensation, the resin formed by the condensation being evaporated until it breaks under water. According to the examples (1) 8 kilos of phenol, 9 kilos of formaldehyde (30 per cent solution), 120 c.c.m. of ammonia (0,91), and 40 grm. piperidine pentamethylene-dithiocarbamate are condensed until the mixture turns cloudy and then for 15 minutes longer; the mixture is then freed from water in a vacuum, until a specimen of the resin breaks under water at room temperature.  The product is colourless.  (2) 1 kilo of phenol and 1 kilo of formaldehyde are condensed with 15 c.c.m. of ammonia (0,91) until the resin separates out; the resin is then removed and heated.  When the temperature reaches 120 DEG  C. 5 grm. of piperidine pentamethylene-dithiocarbamate are added and the whole further freed from water until a specimen snaps under water.  When adding the thiocarbamate the mixture must be heated only very gently since a rapid reaction causes frothing.  The use of dimethylamine dimethyldithio-carbamate and diethylamine diethyl-dithiocarbamate is also referred to.  Commercial piperidine pentamethylene-dithiocarbamate must be purified by repeated recrystalization prior to use, since it contains iron impurities.
Patent GB-654261-A (GB)
Title: Improvements in and relating to roller mills
IPC: B02C4/22
Filed: 1947-11-18
Abstract: 654,261. Roller-and-breast mills. TORRANCE & SONS, Ltd., and WADHAM, H. Nov. 18, 1947, No. 30633. '[Class 59] In a roller-and-breast mill in which the material to be ground is fed to the roller through a hopper, the hopper frame and breast housing are mounted on separate pivots and interconnected by linkage whereby they may be swung into and out of engagement with the roller in a single operation. As shown, the frame and housing are mounted on pivots 2 and 1, respectively, and interconnected by curved side links 3 each coupled at one end to a lug 6 on the housing and at the other end to an intermediate lever 7 pivoted at one end to the mill frame and at the other end to a short lever 10 pivoted to the hopper frame. The levers 7 and 10 may, if desired, be dispensed with and the links 3 coupled directly to the hopper frame. Specification 654,260 is referred to.
Patent GB-1042702-A (GB)
Title: Improvements in steam generators
IPC: F22B21/34
Filed: 1963-08-02
Abstract: 1,042,702. Fluid fuel furnaces; water tube steam boilers. BABCOCK & WILCOX CO Aug. 2, 1963 [Aug. 2, 1962], No. 30686/63. Headings F4A and F4B. A steam generator of the package type comprises a gas pass 19 alongside a furnace chamber 17 and containing steam generating tubes 22 connected between an upper drum 23 overlying the furnace chamber 17, and a lower drum 24, and a combustion chamber 51 of circular cross-section having wall tubes connected between the drums 23, 24. The furnace chamber 17, lateral gas passes 19 and passages 21 connecting the one end of the furnace chamber 17 to the gas passes 19 are enclosed within a casing having flues 87 connected to the gas passes, and provided over most of its surface with cooling tubes 28, 29, 30 connected between the drums 23, 24. The passages 21 contain superheated tubes 32, supported on vertical tubes 39, Fig. 6. The upper drum 23 projects beyond the front wall of the casing above the cyclone combustion chamber 51, which is enclosed in an air box 65 secured to the front wall of casing and to the upper drum 23. Burners 72 are arranged within a frusto-conical air supply sleeve 75 at the front end of the combustion chamber 51. Some air enters through the front end of the sleeve 75, and some enters through tangential inlets 75C formed in the wall of the sleeve 75. Further air is supplied through tangential ducts 76, Fig. 2, in the wall of the combustion chamber 51. Each duct 76 opens over the length of the combustion chamber 51, and has a row of gas burners 79. Further air is delivered to the throat 64 between the combustion chamber 51 and the furnace chamber 17 through by-pass air ducts 83 to tangential outlets 86 in the refractory throat lining. Dampers 85 control the amount of air delivered to the throat, which increases to about 30% at full load. The primary air from inlets 75C, the secondary air and fuel gas from outlet 76 and the by-pass air from outlets 86 whirl in the same direction. The supply of tertiary air through the front end of the sleeve 75 is restricted by the close spacing between the sleeve 75 and the air box casing, and the inlets 67 to the air box 65 are connected to a forced draft fan. Since the superheater tubes 32, Fig. 6, are heated by radiation at the rear of the furnace chamber 17 and by convection from the gases flowing to the passes 19 the steam temperature remains constant for a range of loads.
Patent GB-914153-A (GB)
Title: Improvements in or relating to the production of uranium-carbon alloys
Inventor: WILLIAMS JACK
IPC: C01B31/30
Filed: 1959-09-08
Abstract: Uranium-carbon alloys, which may contain plutonium, are produced by cold compacting a mixture of uranium, carbon and, if desired plutonium powders, with or without an intermetallic compound of uranium and iron as described in Specification 914,154, and charging the compacts into a furnace at 1000-1125 DEG  C., whereby the heat of reaction evolved causes the temperature of the compact to rise above the melting-point of uranium. Compaction at 60 tons/sq. inch is referred to.  Specifications 821,287 and 825,041 also are referred to.
Patent GB-824746-A (GB)
Title: Process and device for supporting a series of successively numbered ear marks for marking animals
IPC: A01K11/00
Filed: 1957-10-02
Abstract: 824,746. Packaging ear marks for animals. HAUPTNER, H., and HAUPTNER, K. [trading as HAUPTNER, H. [Firm of]]. Oct. 2, 1957 [Oct. 8, 1956(2)], No. 30845/57. Class 94(1). Consecutively-numbered ear marks for animals of the kind shown in Fig. 8, are assembled and stored on a support comprising a strip 3, Fig. 7, e.g. of sheet metal, formed with a series of flexible tongues 4 and secured to a cardboard sheet 7 creased for folding along a central line, the sheet 7 being folded as shown in Fig. 9, to correspond to the shape of the ear marks and the tongues 4 being first bent upwardly so that they can be inserted in holes 10 in the ear marks and then bent downwardly to secure the ear marks in position. The composite support may be replaced by a single sheet formed with the tongues 4 at one edge.
Patent GB-1241409-A (GB)
Title: Method of forming foamed seal liners in container closures
Inventor: GWINNER WALTER CHARLES
IPC: B29C48/92
Filed: 1970-06-25
Abstract: 1,241,409. Moulding foamed liners for container closures. ZAPATA INDUSTRIES Inc. 25 June, 1970 [30 July, 1969], No. 30874/70. Heading B5A. Foamed liners are moulded in closure caps S by forming a dry mixture of a thermoplastic resin and a blowing agent, working the mixture into a fused foamed state in an extruder 12, dispensing, by means of knife 16, discrete charges C into caps carried by a rotatable conveyer 18, transferring the loaded caps to a position over an anvil 20, and finally moulding the charges to shape using a cooled tool 22. The caps may be heated prior to receiving the charges and the thermoplastic resin is preferably P.V.C. plasticized by two synergistic plasticizers.
Patent GB-645526-A (GB)
Title: Improvements relating to the detection of leakage into vacuum systems
IPC: G01M3/04
Filed: 1948-11-29
Abstract: 645,526. Electric indicating systems. BLEARS, J., LECK, J. H., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Nov. 29, 1948, No. 30932. [Class 40 (i)] In apparatus for detecting leaks in a vacuum system by the external application of a preselected gaseous probe medium, a copper block 1 (Fig. 1) has a central chamber 2 which is sealed at 7 and connected to the vacuum system through a constriction 9. Side chambers 3, 4 contain Pirani resistance gauges 5, 6, and are connected through constrictions 13, 14 to opposite ends of the central chamber which is packed with hydroxide of calcium or other alkaline earth metal to absorb the carbon dioxide probe medium. The constrictions are such that the chambers have equal gas flow time constants, and the Pirani gauges are connected in a normally balanced. bridge network (not shown). Air leakage into the system affects both gauges equally so that bridge balance is preserved, but on external application of the probe medium the latter diffuses into the chamber 4 but is retained by the absorbent barrier, thus reducing the pressure in chamber 3 to produce a bridge unbalance which is a measure of the leakage. Other gases may be used as probe media, with appropriate absorbents, and the electroresponsive gauges may be of alternative types, e.g. ionization gauges. In a modification (Fig. 2, not shown), the gauge chambers may be separately connected to a common conduit, and the absorbent interposed in the appropriate connection..
Patent GB-376146-A (GB)
Title: Improvements in and relating to syphoning apparatus
IPC: F04F10/00
Filed: 1931-11-09
Abstract: 376,146. Siphons. LAWLER, X. F. F. N., 12, John Gate, Bradford, Yorkshire. Nov. 9, 1931, No. 30995. [Class 69 (i).] In a siphon for use in withdrawing liquid from a vessel B, of the kind comprising an inlet pipe A extending towards the top of a container C, the outlet pipe P from which is furnished with a closure device T, the container is provided with a conical base C1 which is strengthened at C2 to retain the pipe A, which is disposed to one side of the container whilst the pipe P is attached to the apex of the base C1. The tap T and the lower part of the pipe P may be in the form of a detachable fitting, and a strengthening strap &c. C3 may be provided.
Patent GB-629772-A (GB)
Title: Improvements relating to cradles for the transport of metal bars
IPC: B62D33/02
Filed: 1947-11-24
Abstract: 629,772. Lifting cradles. THOMAS & BALDWINS, Ltd., R. and DAVIES, A. G. Nov. 24, 1947, No. 31047. [Class 78 (iv)] A cradle for handling metal bars comprises a channel section base fitted with upstanding posts at its ends and at one or more intermediate points, and resting upon transversely extending feet, wooden blocks or like members being arranged in the channel section base between the posts for supporting a load of bars laid across them. Figs. 1, 3 show a cradle for transporting steel bars, which consists of a base a of channel iron having welded supporting feet b, b<SP>1</SP>, b<SP>3</SP> and being provided at each end with a T-section post formed by a web &c. welded to a flange c<SP>1</SP>. Intermediate these posts and welded to the base a are H-section posts, each comprising a web d with flanges d<SP>1</SP>. Replaceable hard-wood blocks e for supporting the steel bars are secured by bolts f to the base a in the spaces between the posts.
Patent GB-820252-A (GB)
Title: Semiconductor device
IPC: H01L21/48
Filed: 1957-10-04
Abstract: 820,252. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. (International Telephone & Telegraph Corporation). Oct. 4, 1957, No. 31159/57. Class 37. A P-N junction is produced by passing current through a semi-conductor body having an intermediate portion of reduced cross-sectional area so that this portion heats sufficiently to become alloyed to an adjacent piece of impurity material. Fig. 1 shows the first stage in one example, in which aluminium wires 7 and 8 are fused in dry nitrogen to the thicker end portions of a P-type silicon body 1 which is mounted on a heater element 2. This results in the provision of two ohmic contacts. The wires 7 and 8 are then fused to leads 11 and 12 Fig. 2) so that body 1 may be supported in a manner such that its intermediate thin portion contacts a pair of antimony doped gold wires 18 and 19 which are secured to leads 10 and 13. Leads 10, 11, 12 and 13 are secured in a glass support 15 surrounded by a metallic structure 16. Alternating current is passed through the silicon body via leads 11 and 12 to heat the central thin portion so that wires 18 and 19 alloy with the silicon to form P-N junction rectifying contacts. The device then constitutes a tetrode transistor comprising emitter electrode 10, collector electrode 13 and two base electrodes 11 and 12. Alternatively, the lead to electrode 12 may be cut off to provide a triode transistor, or the device may be used as a diode. The semi-conductor may alternatively consist of N-type silicon or of germanium, and a gold-arsenic alloy may be used in place of the gold-antimony alloy for wires 18 and 19. During preparation the semi-conductor body may be etched in a mixture of nitric, hydrofluoric and glacial acetic acids.
Patent GB-1431658-A (GB)
Title: Hydrodynamic thrust bearings
IPC: F16C33/10
Filed: 1972-07-04
Abstract: 1431658 Bearings KOMBINAT PUMPEN UND VERDICHTER VEB 20 June 1973 [4 July 1972] 31227/72 Heading F2A A thrust bearing assembly has a housing in which are secured a plurality of thrust pads 28 and an annular thrust flange 6 which bears against the pads. At least one radial face of the flange has open channels 10, 11 in its surface extending from a central region to its periphery so that in operation liquid lubricant is urged radially outwardly along the channels and over the thrust bearing surfaces. Lubricant is supplied along the hollow interior 2 of a shaft 1 on which the flange is mounted and ducts 7, 8 are provided to connect the hollow interior with the channels. Collecting chambers 18 may be provided in the housing radially outwardly of the flange for collecting and recirculating lubricant. Lubricant channels may be provided in both faces of the radial flange. The thrust bearing pads may be mounted in the housing on a resilient ring 29 and held in place by a circlip 30.
Patent GB-1262225-A (GB)
Title: Improvements relating to combustion chambers for gas turbine engines
IPC: F23R3/10
Filed: 1970-06-26
Abstract: 1,262,225. Gas turbine engine combustion equipment. MOTOREN-UND TURBINEN-UNION MUNCHEN G.m.b.H. June 26, 1970 [June 28, 1969], No.31232/70. Heading F1L. The invention relates to gas turbine engine combustion equipment in which fuel and air from the compressor are mixed and then caused to flow through the interstices of a gas permeable structure having non-linear flow paths therethrough whereby the fuel and air are thoroughly mixed and are then ignited. The combustion equipment shown in Figs. 1 and 2 is of the fully annular type comprising an outer annular air casing 1 and an annular flame tube 2 disposed therein, air entering through a divergent member 3 as indicated by arrow F, and fuel being supplied into the air flow from manifolds 4 in directions transversely of the air flow. An annular gas permeable structure 5 is disposed at the upstream end of the flame tube 2 and the fuel and air mixture flows therethrough being thoroughly mixed thereby and entering the flame tube as indicated by arrows G. In Fig. 3 the gas permeable elements are separate members spaced around the upstream end of the flame tube, each comprising a pair of axially spaced permeable elements 11, 12 with baffle elements 14, 15 disposed in the space between the elements 11, 12. The elements are of short arcuate length and a single fuel manifold 16 is provided. In Fig.5 each element comprises three axially-spaced gas permeable elements 19, 20, 21, the elements 19, 21 being of ring form and the intermediate element 20 of central disc form. In this embodiment a series of flame tubes 17 are disposed within annular air casing 1. The permeable elements may be of square, triangular or other form. A series of gas permeable elements may be provided at the outlet of the combustion chamber. The permeable elements may be of sintered or ceramic material; alternatively of fine wire mesh.
Patent GB-1117359-A (GB)
Title: Improvements relating to semiconductor elements
Inventor: FLETCHER WILFRID
IPC: H01L29/00
Filed: 1965-07-22
Abstract: In the manufacture of a semi-conductor device (see Division H1) a layer of silicon is first epitaxially deposited on a silicon substrate and a glassy silico-phosphate layer is then formed on the resulting silicon body.  Prior to deposition the wafer surface is cleaned by heating to at least 1250 DEG  C. in an atmosphere of hydrogen. Hydrogen chloride may also be used in the cleaning process. The silicon wafer is then heated to 900-1350 DEG  C., and a mixture comprising dry hydrogen, the vapour of a volatile silicon compound and the vapour of a compound of a required dopant, is passed over it. The silicon compound may be silane, silicon tetrachloride or tetrabromide, trichlorosilane, dichlorosilane, tribromosilane or silicon tetraiodide. The dopant compound may be boron hydride or trichloride, or boron tribromide, to produce a P-type epitaxial layer.  For an N-type layer the dopant compound may be the hydride of phosphorus, arsenic or antimony, or a volatile halide such as phosphorus or arsenic trichloride.  Subsequent to the above deposition a layer of a glassy silico-phosphate is formed on the silicon wafer by causing it to react with phosphorus pentoxide in gaseous form or in solution, under the influence of heat in the temperature range 1000-1300 DEG  C.  After deposition the wafer is cooled slowly.  This layer preferentially absorbs fast-diffusing contaminants from the silicon wafer, and may subsequently be removed. Alternatively it may be left on the wafer, providing a phosphorus-rich zone at the wafer surface.