baber/WOPTO huggingface dataset:
Patent GB-1028190-A (GB)
Title: Improvements in or relating to dry plate rectifier assemblies
Inventor: MARROW SIDNEY HUGHES
IPC: H01L25/07
Filed: 1963-07-01
Abstract: 1,028,190. Rectifier assemblies. STANDARDS TELEPHONES & CABLES Ltd. July 1, 1963, No. 42764/65. Divided out of 1,021,149. Addition to 852,937. Heading H1K. The rectifier assembly of the parent Specification has a casing formed by two similar insulating members, such as shown in Fig. 1, each part having an integral end cap 42 at one end which, on assembly fits into a corresponding recess 45 at the other end of the other part. The casing may be provided with a slot, or slots, formed either by recessing one or both longitudinal edges of one or both members to either the full or half the required width of the slot, or by forming a slot in the wall of one or both members between the longitudinal edges of the member, Fig. 3 (not shown). If two slots are provided, the assembly may be of the type disclosed in Specification 1,021,149 using double-ended terminal members 20 and 24, Fig. 5 (not shown). The completed assembly may be encapsulated in, e.g., synthetic resin or sealed in the cylindrical plastics envelope in the manner described in Specification 951,354.
Patent GB-1087520-A (GB)
Title: Nuclear reactor plants
IPC: F04D29/46
Filed: 1966-09-26
Abstract: 1,087,520. Cooling reactors. SULZER BROS. Ltd. Sept. 26, 1966 [Sept. 24, 1965], No. 42798/66. Heading G6C. In an integral gas-cooled reactor enclosed in a concrete vessel the reverse flow of coolant through a fan is prevented. Each fan has a radial outflow duct system provided with flaps which are maintained open during normal flow but which close if the flow is reversed due to fan failure. The flaps may be closed by either gravity or springs.
Patent GB-1452782-A (GB)
Title: Animal feed conveyor
IPC: F16L27/107
Filed: 1973-09-12
Abstract: 1452782 Animal feed conveyor H B MARDEN-RANGER 5 Aug 1974 [12 Sept 1973] 42804/73 Heading AIM A feed supply conduit of adjustable length comprises alternative first and second sections 11, 12 having alternately flexible connections 14 and rigid releasable connections 15. The flexible connections are provided by the abutting ends of sections 11, 12 being joined by a strap 21 and connected by a rubber sleeve 18 retained by circlips 20. The rigid releasable connection 15 comprises a rigid sleeve 22 having two hinged semi-cylindrical halves secured by a toggle catch (not shown). Fluidised animal feed is dispensed into a trough by disconnecting a connection 15 and directing tube 12 downwards by flexure of sleeve 18.
Patent GB-1426786-A (GB)
Title: Microbiological method for estimating the toxicity of liquid  industrial effluents
IPC: G01N33/18
Filed: 1973-09-12
Abstract: 1426786 Estimating the toxicity of industrial effluents BRITISH PETROLEUM CO Ltd 5 Sept 1974 [12 Sept 1973] 42876/73 Heading G1B A culture of an aerobic single cell microorganism is incubated anaerobically, with a liquid industrial effluent and water, then the rate of aerobic respiration of the cells is compared with that of cells which have not been so treated, as a measure of the toxicity of the effluent. Incubation may proceed for 15-180 minutes at 20-35‹C. Preferably 0À04-2À0 mg of cells per ml of effluent are used and the volume of the mixture is 2-20 ml, comprising 1-10 ml effluent. The micro-  organism may be a veast. An example using Saccharomyces cereviseae gave a threshold toxicity for toluene of 200-350ppm: the toxicity of toluene for mosquito fish is 386-1180 ppm.
Patent GB-1318838-A (GB)
Title: Underwater pipe connection apparatus
IPC: E21B43/013
Filed: 1971-09-16
Abstract: 1318838 Wells &c VETCO OFFSHORE INDUSTRIES Inc 16 Sept 1971 [12 Jan 1971] 43161/71 Heading E1F [Also in Division F2] Apparatus for connecting flow lines to a well head having a guidance structure 12, 13, 14 with parts 15a, b, c, d, disposed at and extending upwardly from the well head comprises a flowline guide structure 21, 22a, 22b movable downwards along lines 16a, b to locate on a suitable pair of posts 15a, b, c, d; flowline alignment means means 50 (including guide funnels 53) secured to the structure 21; fluid flow apparatus 18 including one or more first flow lines 19 and movable downwardly along guide lines into communication with the well bore 17 and having an end fitting 45 facing the alignment means; one or more second flow lines 20 adapted to be lowered through the body of water, connector means 20a (including probes 64) secured to said second flow lines and engageable with the alignment means to position the connector means in alignment with the end fitting 45 and means for operatively connecting the first and second flow lines. The latter means preferably consists of a separate piston and cylinder device (Fig. 13, not shown) which can be latched on to parts of the flow lines to draw them together. The flow lines 20 are provided with carrier means 63 which can be released from the flow lines and pulling lines 68 which are fed through funnels 53 of the alignment means 50 prior to the latter being lowered into position so that by pulling on the said lines the probes 64 enter the funnels 53 to position the connector 20a on the structure 21 and in alignment with fitting 45. The guide assembly is releasably securable to the flow line guide structure and releasing means are provided which are operable from a vessel located at the surface of the water so that the guide assembly can be released and raised to the surface after the flow lines have been connected. Fig. 10 shows the flow line connection. The fitting 45 has passages 90 (in communication with flow lines 19) and inclined tapered guides 87. The flow line connector 20a has corresponding passages 91 (in communication with flow lines 20) and the fitting 45 and the connector 20a have -corresponding grooves 93 with sealing rings 92 therein. The fitting 45 and connector 20a are brought together by the hydraulic cylinder devices (80) (Fig. 13 not shown) and secured by bolts 88.
Patent GB-1047140-A (GB)
Title: Speculum
IPC: A61B1/31
Filed: 1964-10-23
Abstract: 1,047,140. Specula. SMITH KLINE & FRENCH LABORATORIES. Oct. 23, 1964 [Nov. 12, 1963], No. 43424/64. Heading A5R. A surgical speculum comprises a hollow cylinder 11 with a hand guard 14 at the proximal end and a removable obturator 18 having a handle 21 which bears against the proximal end of the cylinder at maximum projection of the obturator from the distal end. The obturator 18 has an internal groove 23 which receives a flange 22 connected to a shaft 20 having a handle 21. The flange and the obturator are apertured to prevent a suction effect as the obturator is withdrawn after inserting the device in a body cavity. Air under pressure may be introduced into the cylinder through a nipple 25. The parts of the device are made of blue or green linear polypropylene and may be opaque. The device is supplied sterilized in a sterile bag and may be coated with material which changes in colour on exposure to air or tissue to ensure that it is used only once. The parts of the device are moulded simultaneously and then assembled.
Patent GB-1109549-A (GB)
Title: Branched conduits
IPC: F16L41/02
Filed: 1966-09-29
Abstract: 1,109,549. Pipe joints. GENERAL MOTORS CORPORATION. 29 Sept., 1966 [7 Oct., 1965], No. 43497/66. Heading F2G. [Also in Divisions B3 and F1] An I.C. engine exhaust pipe has branches 22, 26, Fig. 4, each having a semicircular end portion the flat walls 38 of which are integrally connected by a junction wall 40 and juxtaposed to form a cylindrical conduit diametrally divided by the flat walls. A reinforcement plate 42 may be secured to the junction wall by tabs 40. The end portions are secured to the main conduit end portion 24 by U-bolt 52 and are maintained in alignment by a saddle and U-bolt assembly 48. In a modification a U- shaped clip is spot-welded to the flat walls. In a method of making the branched conduit from a continuous length of pipe, an intermediate portion is swaged to a semicircular cross-section. A transverse cut is made through the curved pipe surface to the flat wall and the pipe is bent back on itself from the cut to form the branches 22, 26 and junction wall 40.
Patent GB-1534488-A (GB)
Title: Method of casting and core assembly therefor
IPC: B22C9/10
Filed: 1977-10-19
Abstract: 1534488 Core assembly; making cores DEERE & CO 19 Oct 1977 [19 Oct 1976] 43603/77 Headings B3F and B3G Intricate cores 52, 62 are separated by a moulded in place heat-vapourizable material 54 (e.g. cellular plastics material) to form a core assembly 50 which can be placed as a unit in a mould. To produce the assembly a first core 52 is made in conventional manner, the core 52 is placed in a core box, semi-expanded polystyrene pellets are injected above the core, the pellets are expanded (by steam) to provide the layer 54, the sub-assembly is removed to another core box wherein the second core 62 is formed on the layer 54 in conventional manner.
Patent GB-1063568-A (GB)
Title: Improvements in and relating to hydraulic extrusion presses for tubes
IPC: B21C23/21
Filed: 1963-11-07
Abstract: 1,063,568. Extruding; billet piercing. SCHLOEMANN A.G. Nov. 7, 1963 [Dec. 6, 1962], No. 43955/63. Headings B3H and B3P. A hydraulic tube extrusion press has a billet piercing mandrel 22, Fig. 3, actuated by a cylinder 8 disposed behind the main press cylinder and rigidly connected to the main platen 4 carrying the extrusion ram 11. Platen 4 slides along inclined guides on the press bed and is actuated by pistons 16 working in four parallel cylinders 12 supported on a fixed head 1, Fig. 1 (not shown), connected by the rods 3 to a bolster 2 for the billet container 13. Platen 4 is connected by rods 7 to a crosshead 5 carrying the mandrel operating cylinder 8 whose piston drives a further crosshead 6 connected to the mandrel holder 15. Both crossheads 5, 6 are slidable along inclined guides on the press bed. The stroke of the mandrel is limited by the engagement of ring 20 with the end face 19 of a sleeve 18 secured to the platen 4. The tools are retracted by pistons 17 working within the main pistons 16 and connected by rods 9 to the crosshead 5. After piercing and extrusion of the billet, the discard is separated from the extruded tube by shears 23, Fig. 1 (not shown).
Patent GB-1157224-A (GB)
Title: Semiconductor Crystal Growing
IPC: C30B15/14
Filed: 1967-09-28
Abstract: 1,157,224. Crystal-pulling. GENERAL MOTORS CORP. 28 Sept., 1967 [14 Oct., 1966], No. 44110/67. Heading BIS. In the pulling of a mononcrystalline rod of silicone under a pressure of less than 3 x 10<SP>-5</SP> mm from a melt using a thin seed, the melt is protected by an apertured shield through which the rod passes and a complimentary shield on the seed holder to cover the aperture in the early stages of pulling. The apertured shield is maintained at 1,000- 1,400‹C by heat radiated from the melt. As shown, the melt is contained in a graphite crucible 22 which has a quartz liner 24, is surrounded by a cylindrical graphite resistance heater 16 and a cylindrical quartz heat reflector 18, and is covered by a shield 28 having an aperture 30 with a plurality of outwardly extending slits 42 to facilitate viewing of the solid/liquid interface. Aperture 30 is itself covered by a shield 38 on seed holder 34. In another embodiment (Fig. 3), the apertured shield is suspended close to the surface of the melt and is in the form of a composite assembly of upper and lower annular members of molybdenum, the aperture in the upper member being larger than that in the lower member. A crucible may be dispensed with by forming a molten puddle in the upper surface of a silicon ingot.
Patent GB-1072136-A (GB)
Title: Improvements in or relating to solid-state electron devices
IPC: H01L27/00
Filed: 1964-10-29
Abstract: 1,072,136. Semi-conductor devices. ING. C. OLIVETTI &c. S.p.A. Oct. 29, 1964 [Oct. 30, 1963], No. 44121/64. Heading H1K. A tunnel diode consists of a thin insulator layer D sandwiched between a metal layer M and a semi-conductor layer S. The Specification explains, with reference to energy level diagrams (Figs. 4a, 4b and 4c, not shown), how the tunnel effect in the insulator layer arises and states that the condition for tunnelling is that S D .## D -X D <300, where S D  = the thickness of the insulator layer in , # s  = the work function of the semi-conductor in volts, and X D  = the electron affinity of the insulator in volts. Numerous characteristic curves (not shown) are also given, for various ranges of forward and reverse bias voltages and various temperatures: these show the devices to be suitable for use as rectifiers or as non-linear capacitors. It is also stated that a pair of them, connected in parallel opposition, may constitute a varistor. The diodes may be produced from a single crystal of silicon on which an oxide layer is formed by oxidation of the silicon and vapourphase growth of further silicon dioxide. Islands of aluminium are then evaporated on to the oxide, by a photolithographic masking technique, and the crystal separated into devices such as that shown in which M is aluminium, D is silicon oxide and S silicon. If a plurality of interconnected diodes is required, e.g. to constitute a rectifier matrix, the crystal would not be so separated and the diodes would form an integrated circuit. Alternative materials are: for M-copper silver, gold-chromium or nickel-chromium; for D-aluminium oxide, tantalium oxide, niobium oxide or an organic polymer; for S (which need not be monocrystalline)-germanium or a III-V or II-VI compound. The terminals 1 and 2 of Fig. 1 consists respectively of a (preferably gold) lead-wire and the header of a closed nitrogenfilled container (not shown) to which the metal layer M is secured, e.g. by gold-antimony solder.
Patent GB-1406861-A (GB)
Title: Metering pumps
IPC: F04B9/117
Filed: 1972-09-25
Abstract: 1406861 Reciprocating pumps HELLMUTH WALTER GmbH 25 Sept 1972 [25 Sept 1971] 44270/72 Heading F1A A pump assembly for supplying one or more liquids at a uniform rate comprises one or more pump units 8, each comprising two piston assemblies 18, 46 and 26, 47 operating out of phase, and moved upwardly by hydraulic pressure and downwardly by springs 12, or gas pressure in an accumulator, Fig.3 (not shown). On the upward stroke of each piston assembly, by pressure supplied beneath piston 18 or 26 via line 9, liquid is discharged from a chamber 14 to line 25, and fresh liquid is drawn into a chamber 13. On the downward stroke, liquid is transferred from the chamber 13 to chamber 14 via the check valve and controlled line shown, or through the piston assembly, Fig.3 (not shown). Hydraulic pressure is supplied to lines 9 by pump 1 via rotary distributing valves 5 driven synchronously by hydraulic motors 3 controlled by valves 10. The speeds of the pump units are adjustable by throttles 16. The rotary valves 5 have control grooves arranged to provide controlled overlap of the piston strokes of each pump unit 8 to ensure uniform flow, Figs. 5 to 9 (not shown).
Patent GB-1479949-A (GB)
Title: Stoving enamels
IPC: C08L33/06
Filed: 1974-10-14
Abstract: 1479949 Stoving enamels having hydroxylcontaining copolymer binders BASF AG 14 Oct 1974 [15 Oct 1973] 44353/74 Headings C3P C3B and C3R Stoving enamels comprise, as binder, a copolymer of (A) 5-96% by weight of at least one ester of an α,#-olefinically unsaturated carboxylic acid and a C 1 -C 8  monohydric alcohol, (B) 2-30% by weight of at least one #-hydroxy-n-propyl ester of an α,#-olefinically unsaturated carboxylic acid, (C) 2-15% by weight of at least one α-hydroxymethyl-ethyl ester of an α,#-olefinically unsaturated carboxylic acid and optionally (D) up to 65% by weight of at least one other copolymerizable monomer optionally in combination with one or more crosslinking low molecular or macromolecular compounds. Component A may be an alkyl ester of acrylic, methacrylic, fumaric, maleic or itaconic acid. Components B and C may be derived from the same acids as exemplified for A and also from crotonic acid. Optional comonomers D include styrene, vinyl toluene and other styrene derivatives, long chain alcohol and aminoalcohol esters of (meth)- acrylic acid, vinyl esters, unsaturated carboxylic acids and nitriles and amides thereof, including the N-alkoxymethyl amides. Preferred optional crosslinking compounds are amino resin precondensates, e.g. melamine-formaldehyde precondensates. In addition to the binder and solvents, the enamels may also include such components as acrylic resins, epoxy resins, phenolic resins, polyesters, cellulose ethers or esters, dyes, pigments, fillers and curing catalysts. The enamels may also be used in powder form for fluidized bed coating or electrostatic powder spraying. Coatings may be applied to wood, ceramics, plastics and, especially, metals.
Patent GB-978530-A (GB)
Title: Powder flame spray gun nozzle
IPC: B05B7/20
Filed: 1963-11-11
Abstract: 978,530. Spray-producers. METCO Inc. March 11, 1963 [March 5, 1963], No. 44394/63. Heading B2F. A nozzle for a flame gun suitable for spraying metal or ceramic powders comprises a nozzle body 1 terminating in a nozzle face having a substantially flat portion 2, a plurality of burner jets 3 arranged in the form of a ring in said body and terminating at the said flat portion 2, a central powder conduit 6 extending through said body and concentrically arranged with respect to the ring of jets, an annular channel 8 in said face concentrically positioned between the conduit 6 and the ring of jets, and means for causing a flow of gas into and out of the channel 8 to provide a buffer sheath of air between the powder as it leaves the conduit 6 and the flame sheath from the jets 3. In the embodiment of Fig. 1 ambient air is drawn into the channel 8 via air holes 9 by the passage of the combustible gases through the jets 3 and the passage of the powder entrained in a carrier gas through the conduit 6. The cylindrical extension 7 defining one end of the conduit 6 projects beyond the flat portion 2, and may be enclosed at its end apart from a number of divergent jets, Fig. 3 (not shown). In the embodiment of Fig. 5 the combustible gases flow through a conduit 23 and out of jets 19, the powder is passed through a conduit 29 and a central passage 25, and compressed air is forced through a conduit 34 and out of an annular channel 30. This embodiment is particularly suitable for spraying the interior of cylinders. Specification 830,456 is referred to.
Patent GB-905163-A (GB)
Title: Improved carrier for milk or like bottles
IPC: B65D71/52
Filed: 1959-12-31
Abstract: 905,163. Bottle carriers. HYGIENIC WIRE WORKS Ltd., and MORGAN, J. H. Nov. 18, 1960 [Dec. 31, 1959], No. 44468/59. Class 18. A bottle carrier is fitted with two guard members 21, 22 arranged to hinge between a position in which they lie edge to edge across the top of the carrier and a position in which they form a handle, Fig. 2 (not shown). The carrier, made of wire, comprises a base 10 supporting the bottles and a grid 15 for locating them attached to inverted U-shaped members 12, 13 joined at the top by parallel rods 18, 19 forming pivots for the guard members 21, 22. Each of the guard members 21, 22 is formed from a number of closely spaced wires on a tubular frame, one of the wires 21c, 22c extending beyond the edge of the guard member to engage the members 12, 13 and thus to support the guard members. Rubber buffers may be fitted to the ends of the members 12, 13.
Patent GB-1245404-A (GB)
Title: Fluid flow control valves
Inventor: DAVIS JOHN WALTER
IPC: F16K11/02
Filed: 1967-09-30
Abstract: 1,245,404. Valves. DUNLOP HOLDINGS Ltd. 25 Sept., 1968 [30 Sept., 1967], No. 44610/67. Heading F2V. A valve which permits flow between either of two connections 9, 17 to the valve and a third connection 21 comprises a diaphragm 5, a stem 22, and a second diaphragm 29 attached to the body so that only small increase in pressure in the outlet chamber 8 over the inlet chamber 7 raises the diaphragm 5 off the exhaust seat 10. The inlet seat 16 is coaxial with exhaust passage 9 and of larger diameter so as to increase the seal on seat 10 whilst permitting movement of the diaphragm 5 away from the inlet seat 16. The amount by which the pressure in the inlet chamber 7 must exceed the pressure in the outlet chamber 8 to move the diaphragm 5 out of engagement with the inlet seat 16 is dependent upon the strength of spring 18. The area contained by the line of contact of the second diaphragm 29 with valve body 1 is equal to the area of central portion 11 so that the diaphragm is balanced. In an alternative arrangement (Fig. 3, not shown) the first and second diaphragms are each annular in form and are formed integrally.
Patent GB-977680-A (GB)
Title: A drift transistor
IPC: H01L21/24
Filed: 1961-12-13
Abstract: 977,680. Transistors. TELEFUNKEN PATENTVERWERTUNGS-G.m.b.H. Dec. 13, 1961 [Dec. 29, 1960], No. 44636/61. Heading H1K. In a drift transistor in which an emitter pellet containing donor and acceptor impurities is alloyed to a semi-conductive base material to form an emitter zone and a drift doping region diffused therefrom, a low-resistance surface layer is diffused on to the base material on the same side thereof as the emitter, the impurities of the surface layer having a smaller diffusion coinstant than those of the drift region and being of the same conductivity type as the base material. A ring-shaped base electrode (7) is then alloyed to the relatively low resistance surface diffusion layer, this arrangement allowing the base-emitter resistance to be relatively low but without the need for very small baseemitter separation. As described phosphorus is diffused on to a semi-conductor body 3 to form a layer of conductivity 100 #<SP>-1</SP>cm.<SP>-1</SP>and then a pellet 1 containing gallium and antimony is alloyed to the body to form an emitter region 4 and a drift region 5. A collector electrode 2 may be alloyed to base 3 at the same time if the surface layer formed on the collector side of the body is removed prior to alloying.
Patent GB-1064495-A (GB)
Title: 7-amino-cephalosporanic acid derivatives
IPC: C07D501/34
Filed: 1963-11-12
Abstract: The invention relates to anti - bacterial cephalosporanic acid derivatives of formula <FORM:1064495/C2/1> in which R is C1- 5 alkyl or aryl, or a compound in which R is phenyl, naphthyl or n-butyl and the d -carboxyl group is linked with the R-substituted amino group to form a 2 : 5-dioxoimidazolidine ring; or a salt thereof.  Examples relate to the preparation of N-(phenylcarbamyl)-cephalosporin C and 7-[4-(1-phenyl-2 : 5-dioxo-imidazolidin - 4 - yl) - butyryl] - amino - cephalosporanic acid; N-(naphthylcarbamyl)-cephalosporin C and 7-[4-(1-naphthyl-2,5-dioxo-imid-azolidin - 4 - yl) - butyryl] - amino - cephalo-sporanic acid; N-(n-butylcarbamyl)-cephalo-sporin C and 7-[4-(1-n-butyl-2,5-dioxo-imidazolidin - 4 - yl) - butyryl] - aminocephalosporanic acid.  The compounds are prepared by reacting cephalosporin C with an isocyanic acid ester of formula R-NCO, where R has the above meaning; and, when required to form the imidazoline ring, treating with anhydrous acids to eliminate water.  The salts are those with alkali or alkaline earth metals, e.g. sodium, potassium and calcium, or with organic bases, e.g. triethylamine and N-ethylpiperidine.  The cephalosporanic acids, or salts thereof, are effective against penicillin-resistant strains of micro-organisms and may be incorporated in pharmaceutical and veterinary preparations for oral, topical or parenteral administration, e.g. tablets, pills, ointments, creams, capsules, solutions, suspensions and emulsions.ALSO:An additive for promoting animal growth and protecting them from infection comprises cephalosporanic acid derivative of formula:  <FORM:1064495/A1-A3/1> in which R is C1-5 alkyl or aryl, or a corresponding compound in which R represents a phenyl, naphthyl or n-butyl group and in which the gamma-carboxyl group is linked with the R-substituted amino group to form a 2, 5 diono-imidazolidine ring, or a salt thereof.  The additive also serves to preserve foodstuffs.