baber/WOPTO huggingface dataset:
Patent GB-816485-A (GB)
Title: Improvements in or relating to ram air turbine
IPC: F01D15/10
Filed: 1956-10-03
Abstract: 816,485. Air turbines. GARRETT CORPORATION. Oct. 3, 1956 [Oct. 7, 1955], No. 30115/56. Class 110 (3). A ram air turbine having a plurality of blades the pitch of which is adjusted by means responsive to centrifugal force acting against torsion rod means has the blades mounted in bearings supported for rotation about an axis disposed at an angle to the axis of adjustment of each blade and means connected with each blade disposed to apply a centrifugal force in opposition and equal to that of each blade to minimize the axial loading on the bearings. The invention is described with reference to a ram air turbine driving an electric generator in which the pitch of the blades 30 is adjusted by flyweights 61 responsive to centrifugal force acting against torsion rods 60. The blades of which one only is shown, 30, Fig. 1, each have a hub 31 which is supported in a bearing 32 carried in a recess 33 in a spinner housing member 29. The hub is provided with gear teeth 34 which mesh with teeth 35 of a blade synchronizing spider gear 36. To prevent a tendency of the blade to turn under aerodynamic loads, the centre of pressure is arranged on the axis of adjustment. A shaft 37 having an enlarged head 38 supported in a bearing 39 carried in a recess in the spinner housing is screwed into the hub 31. A nut 41 on the shaft 37 fixes a counterweight 42 against a shoulder 43. The counterweight 42 has three parts 42, 42a, Fig. 4, which are so arranged that the centrifugal forces acting on the blade assembly on one side of the axis will be balanced by those acting on the counterweight on the other side so that the load on the bearings 32, 39 is reduced to a minimum. The counterweight is so designed that it also balances the torque on the blade due to the centre of gravity of the blade assembly being offset from the axis of adjustment. A screw 44 provided with a large head 45 arranged to engage the inner race of the bearing 39 is screwed into the shaft 37 so that this shaft is stressed and the bearings 32, 39 preloaded. When the turbine is in operation, the centrifugal forces on the blade and counterweight will tend to stretch the shaft 37 and relieve the bearings on this preloading. The bearings will offer only normal resistance to rotation at the designed operating speeds of the turbine, so that the blades easily change their pitch in response to the action of the governor, to maintain the speed constant within critical limits. Reference has been directed by the Comptroller to Specification 748,057.
Patent GB-655787-A (GB)
Title: Improvements relating to ophthalmometric instruments
IPC: A61B3/16
Filed: 1948-11-19
Abstract: 655,787. Surgical eye appliances. COPPER, A. C. Nov. 19, 1948, No. 30138. [Class 81(ii)] A device for examining the characteristics of the tissues of the eye socket provides means for pressing the eyeball backwards in its socket, measuring the force exerted and indicating the corresponding .displacement of the eyeball. In the form described a frame comprising a bridge 1, Fig. 2, mounted on rigid, adjustable supports 3 is set up across the patient's face with lugs on the limbs 6 engaging the outer margins of the eye sockets; an adjustable nose piece 8 may also be provided to give increased stability. The bridge piece 1 has a longitudinally disposed slot through which may be passed the graduated stem 11, Fig. 3, of a compression dynamometer 12 so that its tip 17 engages a cup placed over the eyeball. The lower set of graduations is marked in millimetres and is so set in relation to the length of the side member 3, Fig. 2, that the amount of protrusion of the eyeball beyond the margin of the eye socket is directly indicated. Pressure is now executed on the dynamometer, and thus on the eyeball, the magnitude of which is indicated by the displacement of the body of the dynamometer in relation to the stem, and for this purpose the upper part of the stem is graduated in grammes. The corresponding displacement of the eyeball is indicated by the relative movement of the dynamometer stem and the bridge piece.
Patent GB-869936-A (GB)
Title: A method of and apparatus for analysis by mass spectrometry
IPC: H01J49/02
Filed: 1957-09-26
Abstract: 869,936. Mass spectrometers. STUDIENGESELLSCHAFT KOHLE. Sept. 26, 1957 [Sept. 26, 1956], No. 30271/57. Class 39(1). A mass spectrometer for analysing gases or liquids suspended in a carrier gas after separation in a gas chromatograph has a multiple ion collector consisting of a number of spaced apart collector plates 1, 2, 3, 4 arranged behind slits in a plate 14 for collecting simultaneously groups of mass numbers corresponding to a single component. The collected ion currents corresponding to the several mass groups are simultaneously measured and recorded by an amplifier system including high leak resistances and galvonometers 16, 17, 18 and 19. The mass group spectrum obtained is -stated to be characteristic of the particular component, the magnetic field and the accelerating voltage being of given values. In the analysis of hydrocarbons the collectors may be designed to collect groups of ten mass numbers characteristic of fragment ions of the same carbon atom number and to leave between the collectors a range of four mass numbers which are not used. Graphs A, B and C illustrate group peaks corresponding to different components, graphs B and C illustrating .the case where isomers are present. It is stated hydrocarbon isomers up to eight carbon atoms can be identified even though the components are not completely separated. A grounded collector plate 6 collects only ions of the carrier gas e.g. hydrogen or helium. Different collector systems may be interchangeably mounted in the spectrometer for investigating different substances.
Patent GB-364200-A (GB)
Title: Improvements in choking coils for heavy current networks
IPC: H01F30/08
Filed: 1930-10-09
Abstract: 364,200. Inductances. S I E M ENSSCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Oct. 9, 1930, No. 30287. Convention date, Jan. 25. [Class 37.] A system of choking coils without iron cores, for heavy current networks, are connected so that their mutual inductances oppose their self-inductances and have the windings of the choking-coils arranged one within the other so that their mutual inductances are increased. Fig. 1 shows an interconnected network with four feeding points I .. IV, to which current is fed through lines Z1 .. Z4. At each feeding-point is a pair of choking-coils 1, 2 ; 3, 4 ; 5, 6 and 7, 8. Normally the current divides at each feeding point as shown by the arrows in full lines so as to flow through the two coils of each pair in parallel. On the occurrence of a short circuit A, either to earth or between phases, shortcircuit currents flow through the pairs of coils in series as shown by the arrows in dotted lines. In order to reduce the inductive drop in potential during normal working, the windings of the two chokes 1, 2 forming a pair are arranged one within the other, as shown for cylindrical windings in Fig. 2. In order that the self-inductances of the chokes may be equal, each choke is divided so that half the windings w1, w2 of each choke form the outer layer, and the other halves w3, w4 form the inner layer. In a modification, Fig. 3, one choke consists of two flat windings s1, s2, and the other of two flat windings s3, s4, these windings being arranged alternately as shown. The Specification as open to inspection under Sect. 91 (3) (a) states also that the invention is applicable to coils with iron cores. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1141448-A (GB)
Title: Multiple-cathode x-ray triode tube
Inventor: SEKI TOSHITAKA
IPC: H01J35/06
Filed: 1967-06-30
Abstract: 1,141,448. X-ray tubes. TOKYO SHIBAURA ELECTRIC CO. Ltd. 30 June, 1967 [30 June, 1966], No. 30297/67. Heading H1D. An X-ray tube is provided with a plurality of cathode assemblies 4 each mounted on a respective radial arm 15 extending from a common metallic stem 7a secured to a re - entrant portion of the envelope. Each cathode assembly comprises a cup - shaped control electrode 18 with grid wires across its open end and containing an electron emissive filament; the three lead-in wires for these electrodes are covered by a shield 22 and pass through the stem 7a. If the arms 15 are metallic the electrodes 18 are insulated from them by washers 16, but the arms 15 may be of ceramic or other insulating material. In the example shown there are two cathode assemblies arranged so that the points of impact 12 of the electrons from them on the rotating anode 3 are spaced apart by a distance equal to the distance between human eyes.
Patent GB-877576-A (GB)
Title: Improvements in or relating to devices for the lateral displacement of crops lying on the ground
IPC: A01D78/00
Filed: 1957-09-27
Abstract: 877,576. Haymaking machines. VAN DEB LELY N.V., C. Sept. 27, 1957 [Sept. 29, 1956], No. 30354/57. Class 6(3). In a rake-wheel type of haymaking machine having rake-wheels which are raisable vertically by lifting mechanism during operation, the lifting mechansim is arranged to be operable by moving a flexible member longitudinally in the direction of motion, the flexible member turning a lever forming part of the lifting mechanism. The arrangement is applied to the machine described in Specification 877,574 wherein rake-wheels 23, 24, are mounted in groups 9, 10, 11, each group comprising a beam carrying bearings 16, 18, for rake-wheel cranks 19, 20, which are suspended by chains and springs 45, 46, from arms 42, 43, 44, on a shaft 38, rotatable on the frame 2. The shaft carries another arm 48 which is linked to a multi-armed lever 50, rotatable about a vertical pivot 51, on the frame. Integral arms 57, 58, extend perpendicular to various possible directions of travel so that a cord may be alternatively attached to their free ends for pulling by the tractordriver. In Fig. 2, only a single additional arm 103 is provided but this may be locked to a disc 106, forming part of the lever system 50, in various alternative orientations. In Fig. 3, a single lever 110 is intended to be pulled, alternatively, in two opposite directions Z1, Z2, and chains 114, 116, ensure that a unidirectional effort is applied to the lifting appliance, (not shown), through the link 118. Specification 877,577 also is referred to.
Patent GB-1394086-A (GB)
Title: Semiconductor devices
IPC: H01L23/482
Filed: 1972-06-29
Abstract: 1394086 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 29 June 1972 [2 July 1971] 30427/72 Heading H1K A transistor comprises a Si wafer having an Al electrode layer 25 on one surface and a SiO 2  layer 3 on the other surface, having a N-type collector zone 4, a doped P-type base zone 5, and a N-type doped emitter zone 21; the PN junctions 12, 22 intersecting the surface and underlying the oxide layer. Aluminium electrode layers 24, 11 contact the emitter and base zones. To increase breakdown voltage the base-collector junction 6 is shunted by a resistive elongate strip 26 of polycrystalline Si interconnecting aluminium layer 11 to aluminium layer 9 overlying a doped-N-type contact zone 10; the strip being coiled to surround the base zone 5 and to overlie a coiled surface oxide layer 2 and the region 4 of the wafer. The turn spacing may increase from the centre to the periphery. A further insulant material, e.g. high ohmic polycrystalline Si may overlie layer 3 with a strip zone thereon doped to form a coiled strip resistance through a mask. In operation the emitter-base junction 22 and the base collector junction 6 are biased in forward and reverse directions by sources E 1 , E 2  and input U is applied between emitter and base to produce output across R. In a modification (Fig. 5, 6, not shown) a planar diode having a PN junction is similarly provided with a junction shunting resistor formed as an elongated strip diametric to concentric silicon oxide annuli coated with aluminium layers interconnecting and crossing the resistor layer, so as to produce a surface potential distribution similar to that of a coiled strip. The elongated strip is connected over aluminium electrode layers to N and P zones and the diode is biased from a source of EMF over a series resistor. The width and spacing of the annular aluminium layers are critically adjustable, and the resistor strip may be curved, or disposed obliquely, or of producted width. Doping may be by diffusion from doped oxide or by ion implantation, or the P-layer may be epitaxially grown in a cavity of the wafer. The resistance layer may be provided by vapour deposition sputtering or thermal decomposition of a gaseous compound. The conductive annuli may be interrupted, or replaced by short transverse strips. The semi-conductor material may be Ge, GaAs, or other A III B V  compounds, and the insulant may be Si 3 N 4 , Al 2 O 3 , or composite layers thereof, and an overlying insulant layer may be provided. The device may be a thyristor.
Patent GB-537425-A (GB)
Title: Improved dielectric for insulating couplings
IPC: H02G3/06
Filed: 1939-11-21
Abstract: 537,425. Insulating couplings. McGUIRE, J. H. Nov. 21, 1939, No. 30479. Drawings to Specification. [Class 70] A di-electric material for forming the mechanical connection between the aligned metal nipples and flanges of a pipe coupling of the type in which the pipe ends are insulated from one another comprises a mixture of commercial sheet rubber, talite, zinc oxide, sulphur, asbestine, carbon black, diphenylguanidine, mercaptobenzothiazole, a blending oil and an anti-oxidant. The mix is vulcanized to hardness. The dielectric material may be provided with a metallic protecting shield. The blending oil may be a pure mineral oil and the anti-oxidant may be an aminonaphthalene.
Patent GB-282030-A (GB)
Title: Improvements in or relating to reversing gearing for use with internal combustion engines suitable for propelling boats
IPC: F16H3/60
Filed: 1927-11-14
Abstract: 282,030. Barbarou, M. J. B. Dec. 8. 1926, [Convention date]. Reversing-gearing for use with internal-combustion engines, especially for marine propulsion, is controlled with the aid of pressure gas from an engine cylinder, which gas is effective to hold the brake I upon an epicyclic train during reversed driving. The brake acts on the carrier F of planets C which mesh with a side gear B driven from the engine A, and with a side gear D fast on the driven shaft E, there being a clutch G for forward solid driving, as is usual. Gas from an engine cylinder passes through a valve J and pipe L to a vessel M where water vapour condenses. A pipe R leads to a multiple-way cock N. In the configuration shown in Fig. 1, a spring W asserting itself has engaged clutch G and released brake I, a brakeactuating cylinder O being exhausted through pipe and port Y. The forward solid drive results. On turning the cock N to connect the pipes S, R, a piston Z is thrust, out so that a lever Q disengages the clutch G and applies the brake I. which is so held as long as the resulting reversed drive is required. To stop the propeller &c., the clutch G must be held disengaged. Gas for this purpose is admitted to the cylinder, 0 from a pipe T by a slide valve P, which cuts off the pressure gas in a configuration shown in Fig. 2. If the lever Q passes its proper position, a by-pass X exhausts the gas through pipe V and port Y.
Patent GB-664233-A (GB)
Title: Improvements in and relating to baskets
IPC: B65D6/08
Filed: 1949-11-30
Abstract: 664,233. Baskets. LAING, J. A. July 13, 1950 [Nov. 30, 1949], No. 30710/49. Class 133. A basket is reinforced by means of one or more lengths of buffalo or other hide woven into one side of the basket, through the bottom thereof, up the other side and lapped round the border c, the lapping extending completely around the perimeter of the border. The ends of the hide strips are lapped around the handles d, e and the bottom of the basket has two wooden runners. Specification 624,982 is referred to.
Patent GB-1361825-A (GB)
Title: Condensation of steam turbine exhausts
IPC: F01K9/00
Filed: 1971-06-30
Abstract: 1361825 Steam turbine plant SASAKURA ENG CO Ltd 30 June 1971 [30 June 1970] 30758/71 Heading B1B [Also in-Division Fl] The exhaust steam from turbine 5 is mixed with cooling water in condenser 7 maintained under vacuum by steam ejector 10; some of the mixture of condensate and cooling water withdrawn from the condenser is pumped through pipe 12 to the boiler 1 which supplies steam to the turbine, another portion of the effluent water from the condenser is pumped optionally through air-cooled heat-exchanger 18, then exchanges heat with liquefied natural gas (mainly methane) in vapourizer 23, and the cooled water is then passed to the spray assembly 9 of the condenser. Boiler 1 is heated by crude oil supplied through pipe 2, and by the natural gas evolved in vapourizer 23 and supplied to the boiler through pipe 3. The boiler water is heated in the steam ejector condenser 14 before being pumped through heater 16 to the boiler. Air cooled condenser 18 may be bypassed using bypass 27 by adjustment of valves 28, 29 and 30. The quantity of heat exchanged in exchanger 18 may also be adjusted with by-pass piping 27 and the associated valves.
Patent GB-207974-A (GB)
Title: Method of and means for the production of chocolate and other confectionery casings
IPC: A23G1/21
Filed: 1922-11-10
Abstract: 207,974. Boyd, W., and Yates, W. H. Nov. 10, 1922. Moulding confectionery lubricating; c o o i i n g and heating plungers.-In the production of chocolate or other confectionery casings by inserting a plunger-like core into a mould partially filled with the casing material, adhesion of the material to the core is obviated by coating it with a lubricant which is at the moment of use substantially solid but which melts on contact with the material, such lubricant consisting of either: (1) alcohol, terpenes and like liquids, or water cooled near or below the solidifying point; or (2) gelatine or solutions thereof or like substances. With (1) the plunger is cooled to the desired degree; but with (2) the plunger is not cooled and may even be warmed. Fig. 1 shows a suitable plunger A, which is hollow and is furnished with an inlet A<1> and outlet A<2> for cooling or heating fluid.
Patent GB-227430-A (GB)
Title: Improvements in protective arrangements for polyphase electrical circuits
IPC: H02H3/34
Filed: 1924-12-22
Abstract: 227,430. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Sleeper, H. P., and Fortescue, C. L.). Jan. 8, 1924, [Convention date]. Protective arrangements ; induction relays. -A single relay 14 is connected in a network 25 of reactances and resistances 11, 12, 13 so as to be operated in accordance with abnormal " positive phase-sequence currents " (which are a measure of the overload or short-circuit conditions in the circuit) and in accordance with "negative phase-sequence currents (which are a measure of phase unbalance, phase reversal and open phase conditions). The network is connected, as shown, to the circuit 18 to be protected and the resistance 11 and reactance 13 are so chosen that the " positive and negative phasesequence components " of the impressed line currents are separated by 60‹. The relay 14 operates only in accordance with the " negative phase-sequence component " of the current traversing the circuit. The " positive phasesequence components " traverse the reactance 12 which may comprise the winding of a separate relay for dealing with overload and short-circuit protection. A third relay in the neutral point connection to earth is provided to deal with faults to earth. The mathematical considerations on which the invention is based are referred to in the Specification and the terminology explained.
Patent GB-660073-A (GB)
Title: Improvements in automatic firearms
IPC: F41A19/12
Filed: 1949-11-30
Abstract: 660,073. Firearms. ZBROJOVKA BRNO, NARODNI PODNIK. Nov. 30, 1949. [Dec. 4, 1948] No. 30784/49. Class 92 (ii). An inertia locked breech-block 2 is retained in the cocked position by a tubular member 4, mounted in the fixed casing 1, 3, and carrying pivotally mounted sears 11 which engage with bents 9 projecting from the breech-block. The sears, which in the construction shown are urged to the breech-block holding position by a spring 13, can be disengaged by a press button 17 whose stem 10 has surfaces 16 which squeeze the sears together when the press button is pushed in the direction of the arrow. When the pressure on the button is maintained the breech-block reciprocates to and fro, its rearward movement being continuously opposed by a spring 19, and towards the end of its stroke by a buffer spring 21. The latter bears at its rear end upon a member 25 secured to the member 4 and at its forward end on a sleeve 22 which is drawn rearwards by the rear end of the recoiling breech-block ; the member 25 bears against a nut 27 screwed into the casing part 3. When the press button is released the sears 11 open into the path of the bents 9, thus preventing the return of the breech-block to its forward position. The shock upon the sears is transmitted to the member 4 and is taken up by the spring 21 whose forward end is supported by the engagement of a flange on the sleeve 22 with a shoulder 23 of the casing part 3.
Patent GB-1516517-A (GB)
Title: Process for the production of polyureas or polyurethane-polyureas
IPC: C08G18/79
Filed: 1975-07-23
Abstract: 1516517 Polyureas and polyurethane-polyureas BAYER AG 23 July 1975 [30 July 1974] 30787/75 Heading C3R Polyureas (including polyurethane-polyureas) are prepared by reacting an organic polyisocyanate having an NCO content of from 0À5 to 25% by weight, an acyl urea group content of from 0À5 to 50% by weight and a-N=C=N- group content of from 0 to 25% by weight, the total content of the isocyanate, acyl-urea and carbodiimide groups not exceeeding 60% by weight, with a diamine. In-the production of polyurethanepolyureas, the polyisocyanate may be in the form of a prepolymer or the polyisocyanate and the diamine may be reacted in the presence of a polyol compound. The polyisocyanate containing the acyl urea and optionally carbodiimide groups may be prepared by first introducing carbodiimide groups into a conventional polyisocyanate or prepolymer thereof by reaction with conventional carbodiimide-forming catalysts, e.g. a mixture of 1-methyl-1-phospha- 2-cyclopenten-1-oxide and 1-methyl-1-phospha- 3-cyclopenten-1-oxide, followed by reaction of the resulting carbodiimide-containing polyisocyanate with a carboxylic acid suitably at a ratio of 0À2 to 1À2 gram equivalents of carboxyl groups per gram equivalent of carbodiimide groups. The diamines used are those well known in the art. All reactions may be carried out in the presence ofasolvent. Substrates may be coated and/or impregnated with the final product.
Patent GB-733873-A (GB)
Title: Improvements in and relating to the welding of metallic tips to metallic bases
Inventor: TUCKER NORMAN ALBERT
IPC: B23K11/00
Filed: 1952-12-04
Abstract: 733,873. Electric welding. JOHNSON, MATTHEY & CO., Ltd. Nov. 18, 1953 [Dec. 4, 1952], No. 30810/52. Class 83 (4). In apparatus for welding a. tip to a metallic base, e.g. a pen nib, the base is held in a clamp having jaws spring urged together and separated by manual rotation of a cam. The base is held between the end of a stud 10 secured to the frame 1 of a welding machine and the inner face of a U-shaped extension 17 of a sleeve 15 slidably but non-rotatably mounted on the stud 10. The clamping faces are urged together by a spring 20 held in position by a cover 21 axially located by a pin 19 passing through the stud 10. Rotation of the cam 14 by a lever 22 separates the clamping faces. A supply of tips is housed in a holder 5a mounted on a flexible member 6. Depression of the member 6 causes a tip to be moved to the welding position, and subsequent release of the member brings the tip into engagement with the base. The tip is welded to the base by electric arc or resistance welding and when fusion occurs the resulting upward movement of the holder 5a cuts off the welding current.