baber/WOPTO huggingface dataset:
Patent GB-586471-A (GB)
Title: Improvements in buoyant electric cables
IPC: H01B7/12
Filed: 1943-05-08
Abstract: 586,471. Electric cables. OKONITECALLENDER CABLE CO., Inc. May 8, 1943, No. 7330. Convention date, July 3, 1942. [Class 36] A bouyant electric cable has a continuously tubular hollow core 2 through which water may be passed for cooling the cable or varying its buoyancy. The conductors 4 consist of bare single or stranded wires and either lie within or are embedded in the walls of the core 2 or in insulating material surrounding the core. The core of rubber or the like may be provided with floats 6, Fig. 2, of wood or wood pulp which may be impregnated with terpin hydrate and cemented to the core and connected together by links 8 which allow the cable to be bent or reeled, the floats also protecting the core. To increase the flexibility, the links 8 are omitted and the floats 26, Fig. 9, provided with concave and convex ends 30, 32. The conductors 4 may be embedded in the walls of a tube 14, Fig. 6, placed within the core 2, the space between the tubes 2, 14 being filled with air, or the core 2 may be placed within a waterproof hose of relatively large diameter and reinforced with a helical wire, the hose being provided with one or more pairs of fins to control the depth at which it is submerged when towed. In a modification, Fig. 12, the core 22 consists of an open helix of heavy waterpervious paper and is surrounded by a thick flexible wall 24 of rubber or like material to which the floats 26 are cemented, the conductors consisting of one or two layers of wires 4, 34 embedded in the wall 24.
Patent GB-542315-A (GB)
Title: Improvements in and relating to the controlling of pressure charged internal combustion engines for aircraft
IPC: F02D23/00
Filed: 1940-04-24
Abstract: 542,315. Pumps; spray carburetters. AKT.- GES. BROWN, BOVERI & CIE. April 24, 1940, No. 7401. Convention date, April 24, 1939. [Classes 7 (ii) and 7 (iii)] In an aircraft engine charged by a blower arranged in connection with a carburetter and driven by an exhaust-gas turbine, the flow of fuel to the carburetter is restricted to an adjustable pre-determined value, in order to prevent too high speeds of the blower at high altitudes. Flooding of the carburetter may be prevented by an overflow valve provided in a branch line between the pump and carburetter. The fuel may be supplied to the carburetter by a fuel meter connected with a separate motor through a free-wheel clutch, which limits the speed of the meter. The Specification as open to inspection under Sect. 91 of the Acts describe also the following subject-matter. A fuel pump F, Fig. 1 (Cancelled), supplies a carburetter B between the blower D, E and the engine, and is driven by an independent electric motor H, the speed of which is adjusted by a hand wheel K controlling a rheostat. The overflow valve for preventing flooding is shown at G. The fuel supply may be regulated by an adjustable throttle valve. This subject-matter does not appear in the Specification as accepted.
Patent GB-199116-A (GB)
Title: Improvements in appliances for grilling, toasting and the like
IPC: A47J37/10
Filed: 1922-03-14
Abstract: 199,116. Adami, F. March 14, 1922. Grilling and toasting apparatus.-An appliance for grilling &c., more especially for use on gasstoves and gas-rings, comprises a massive metal plate a, having a plane upper surface adapted to be heated prior to its use as a support for food to be cooked, so that on being introduced beneath a gas-ring, the food is cooked simultaneously from above and below. Longitudinal grooves b in the upper surface of the plate a lead to a transverse groove c, which has holes d passing through the plate. A pan f may be provided to support the plate, both the plate and the pan being fitted with handles. Tha supporting ledges g preferably incline toward the front of the pan f. The holes d may be provided with protruding parts to assist the dripping of liquid, and the under-surface of the plate may be plain, so that it can be used for toasting bread.
Patent GB-636731-A (GB)
Title: Improvements in or relating to oars and sculls and co-operating rowlocks therefor
IPC: B63H16/06
Filed: 1948-03-11
Abstract: 636,731. Rowlocks. OLSSON, K. E. F. March 11, 1948, No. 7518. [Class 114] The rowlock 2 has a loop 3 in its upper part, through which passes a shaft 13 parallel to and.secured to the oar loom 1 by the bracket 14. This bracket also carries an arm 11 provided with a shoulder 12 which engages the shoulder 4 on the row when rowing astern.
Patent GB-792257-A (GB)
Title: Improvements in the construction of basic refractory pise linings for metallurgical furnaces
Filed: 1956-03-09
Abstract: The linings and hearths of converters are built up of successive rammed layers of a mixture of fine grained dolomite and 30 per cent-70 per cent dolomite lumps within the size range 35-140 mms, the mixture also containing 5 per cent-25 per cent powdered additives and binding materials.  The additives include chromite, ferrous and ferric oxides, talc, clay, silicates, graphite, cement, aluminous cement, bauxite and quartzite.  The binding materials comprise organic or inorganic liquids or pastes e.g. tar, pitch, alkaline silicates or molasses.ALSO:The linings and hearths of metallurgical furnaces, converters or metal mixers are built up of successive rammed layers of a mixture of fine grained dolomite and 30 per cent- 70 per cent dolomite lumps within the size range 35-140 mms., the mixture also containing 5 per cent-25 per cent powdered additives and binding materials.  The additives include chromite, ferrous and ferric oxides, talc, clay, silicates, graphite, cement, aluminous cement, boriate and quartzite.  The binding materials comprise organic or inorganic liquids or pastes, e.g., tar, pitch, alkaline silicates or molasses.
Patent GB-1504083-A (GB)
Title: Ultrasonic transducers and coupling wedges therefor
IPC: G10K11/00
Filed: 1976-02-26
Abstract: 1504083 Coupling wedges UNITED STATES ENERGY RESEARCH & DEVELOPMENT ADMINISTRATION 26 Feb 1976 [3 April 1975] 07556/76 Heading H4J A coupling wedge 10 (Figs. 1, 2) consists of a generally triangular laminated metal block. The laminations are held together under pressure. When ultrasonic energy is directed through one of the edges P and into a workpiece located at a second edge Q, the third edge R directs ultrasonic waves reflected from the interface between the coupling wedge and the workpiece across interfaces between the laminµ. To this end the third edge R is shaped as a double sloping roof. Preferably the angles of inclination of the two halves of the third edge R are different. Thus one half is preferably at 55 degrees to a plane normal to the plane of the laminations whilst the other is preferably at 60 degrees to such plane. When the angles of inclination are different, e.g. by about 5 degrees, reflections from both halves will not reinforce one another when waves are reflected back to their source; as described a piezoelectric crystal of 0À010 inch thick lithium niobate at edge P. Wedge 10 is formed of laminations of corrosion and temperature-resistant material (e.g. stainless steel) held together under a pressure of 500 to 1000 p.s.i. by bolts 12 through clamp plates 13. Wedge 10 is ¢ inch thick and contains 10 laminµ. Alternatively wedge 10 is 0À43 inch thick and contains four <SP>3</SP>/ 32  inch laminµ at the centre and five 5-mil shims on the sides to eliminate transmissions to the clamping plates 13 (Fig. 3, not shown). The edge P is polished optically flat to within 0À5 micron. Edge Q is preferably at 45 degrees to edges P and R and has a boss 14 shaped to conform to the object into which ultrasonic waves are to be directed, e.g. a pipe having liquid flowing through it. The device is in a flow meter. The crystal 15 (Fig. 5, not shown) is backed by six 0À003 inch thick stainless steel foils (16) for damping rear sound energy. The crystal has platinum foils (17) on both sides to minimize oxygen migration from the LiNbO 3  crystal (15) to the stainless steel. An elongate stainless steel foil (18) at the end of the stack of steel foils (16) serves a connector point for an electrical connector 18a with the central conductor of a mineral insulated cable 19 held by a block 20 fastened to clamp plates 13 by bolts 21. The crystal (15) is clamped against edge P by a ball (23) Fig. 4 (not shown) and saddle (24) including a Belleville spring 25. The clamping force is applied by drawing down clamping plate 26 by two bolts 22. An X-cut LiNbO 3  crystal which generates shear waves is preferably employed although a crystal generating longitudinal waves may be used. When transmitting into liquid sodium more favourable angles of refraction are obtained by using shear waves than by using longitudinal waves.
Patent GB-655090-A (GB)
Title: Improvements in or relating to lathes and like machine tools
IPC: B23Q1/01
Filed: 1948-03-12
Abstract: 655,090. Lathes; planing machines. MUSIL, J. March 12, 1948, No. 7567. Convention date, July 12, 1946. [Class 83 (iii)] A lathe or like machine tool with guideways for a saddle and tailstock, arranged at different levels to avoid interference between their respective movements, is characterised in that the guideway for the tailstock is arranged to the rear of the vertical plane through the spindle axis of the machine, and at an angle to the horizontal guideway for the saddle less than a right angle and preferably at about 60 degrees. The saddle 4 is of box form, Fig. 3, sliding on oil-bath guideways 2, 3, formed in the top closed surface of the bed 1 and normally carries a compound and rotatably adjustable tool-rest 4d, 4e. Saddle feed is effected from screwed spindles 11, 12, one of which is used for screw-cutting. Separate guideways 6, 7 inclined to the saddle guideways are provided for a tailstock 5. The tailstock is automatically traversed by a screwed spindle 16 and has a vertical turret 17 which in addition to the adjustable centre 18 may carry cutting tools. The headstock 19 is vertically adjustable on ways 21 forming part of the closed back 8 of the machine, The machine may be adapted for planing or shaping operations by replacing the compound tool-rest by a work-table 22 supported on the saddle 4 and reciprocated from an independent electric motor 23a with a reversing clutch 33. The tailstock is retracted to enable the member 24 with a compound tool-head 25 to be carried on the guideways 6, 7. Stops 37 are provided to reverse the table 22 and to operate a ratchet feed mechanism 41-44 for the transverse movement of the tool-head.
Patent GB-1267674-A (GB)
Title: Improved bicycle
Inventor: SUTTON-VANE VANE
IPC: B62K21/16
Filed: 1969-02-12
Abstract: 1,267,674. Folding bicycle. V. SUTTON-VANE. 12 May, 1970 [12 Feb., 1969], No. 7647/69. Heading B7E.  In a bicycle, a frame member F has an inverted channel section main part 1 which slopes downwardly from front to rear and within which the front end of a rear wheel fork 8 is pivoted between the ends of the main frame member. The rear wheel fork together with the rear wheel and rear wheel drive transmission is swingable in a vertical plane towards the front wheel. The rear wheel fork 8 is separated from the channel section main part 1 by a rubber block 13. A bracket 4 for a saddle tube 32 is mounted on a plate 32 attached by a hinge to the main part 1 and is held in an operative position by a locking clip 28, an extension 29 of which restrains the rear wheel fork from downward motion relative to main part 1. Transmission is by a toothed belt 16 between pulleys 17 and 18 provided with flanges for retaining the belt. The frame member F has an upwardly inclined and tapered part 2 integral with a steering head tube 3 and contains a toolbox 33. A resilient mounting is provided for the front wheel fork by a sleeve 22. A handle 5 is for carrying the bicycle.
Patent GB-846092-A (GB)
Title: Improvements in or relating to folding chairs
IPC: A47D1/02
Filed: 1956-03-12
Abstract: 846,092. Nursery chairs. TICKNER, A. (Sebel, H.). March 12, 1957 [March 12, 1956], No. 7735/56. Class 52(2) A folding high chair has front legs 2 formed by the legs of an inverted U-shaped member 1 of which the closed end forms a back rest support, rear legs 8 pivoted at their upper ends to a U-shaped member 4 which is pivoted to the member 1 at 5, and extends forwardly to form arms 6, and a further U-shaped member 10 pivoted at 14 to frame 1 and at 15 to legs 8 and carrying a foot rest 13, the arrangement allowing the legs to lie lengthwise adjacent one another in the folded position. The seat 21 of the chair is supported from arms 6 by canvas or other material 22 and a pocket 24 fits over member 1. A tray or table 19 is supported on pivoted arms 18 and a releasable spring-loaded plunger 16 locks together members 4, 10 in the erect position.
Patent GB-1418136-A (GB)
Title: Method of protecting a steel rotor blade of an axial-flow turbine against stress-crack-corrosion
IPC: C21D9/00
Filed: 1973-02-16
Abstract: 1418136 Heat-treating turbine blades BBC BROWN BOVERI & CO Ltd 16 Feb 1973 [18 Feb 1972] 7760/73 Heading C7N The leading edge of a steel rotor blade of an axial-flow turbine is hardened by localized transformation to martensite whereby a permanent compressive stress is induced longitudinally in the blade to improve stress corrosion resistance. The hardened region of the blade does not constitute more than 20% of the cross-sectional area, as measured in a plane perpendicular to the leading edge.
Patent GB-1505554-A (GB)
Title: Lubricating composition
IPC: C10M169/00
Filed: 1975-02-25
Abstract: 1505554 Lubricating greases JET-LUBE Inc 25 Feb 1975 [17 April 1974] 7818/75 Heading C5F A thixotropic lubricating compound that has a reversible gel structure comprises the product obtained by mixing and at least partially reacting a fish oil, a sulphur-modified sperm oil (defined to include sulphurized and sulphonated sperm oils and known synthetic substitutes), a microcrystalline wax and litharge. It may also comprise up to 90% of another oil, which may be a mineral oil or synthetic.
Patent GB-280778-A (GB)
Title: Improved device for embroidering
IPC: D05C1/00
Filed: 1927-03-22
Abstract: 280,778. Bello, T. C. March 22, 1927. Hand sewing-tools. - An embroidering device comprises a tubular body a in which is held, by screws h, a cylindrical body g having a central slot e for the needle c and a pair of grooves g or a single groove g<1> for a stitch regulator, d or d<1>, formed of a pair of wires which abut against the work when the device is used.
Patent GB-739516-A (GB)
Title: Improvements in and relating to electric circuit arrangements for rectifiers of the mechanical contact type
IPC: H02M1/26
Filed: 1954-03-18
Abstract: 739,516. Rectifying. GENERAL ELECTRIC CO. March 18, 1954 [March 20, 1953], No. 7929/54. Class 38 (2). In a contact rectifying arrangement, shown in Fig. 1 as a three-phase bridge arrangement, with contacts 1-6 connecting three-phase supply L1, L2, L3 with a D.C. load VL, commutation is effected by condensers K1, K2, K3 connected in series on the A.C. side. The contacts are closed by cams 21, 22, 23, driven by motor 20, at a time preceding the instant of equality of voltage on the incoming and outgoing phases by a period equal to the time which follows that instant before the commutation is finished. Thus commutation is effected by the condenser charge and not by the difference in phase voltages. As the condenser charge varies with the load current, satisfactory commutation takes place substantially over the no-load to full load range. The instant of voltage equality may be made slightly to precede the mid-point of contact overlap which can be kept constant to allow for inaccuracies in operation and contact wear. Each phase includes a saturable reactor R1, R2, R3 much smaller than a normal switching choke, which reactors limit the circulating current at no-load and low loads, when the condenser charges are less than the phase voltage difference. Each reactor R1, R2, R3 has an interphase-connected magnetizing winding 13, 14, 15 in series with a resistor 16, 17, 18 which periodically reverses the magnetization of the reactor so that it can act as both a closing and opening switching choke. The commutation is satisfactory not only when the load current changes but also when the output voltage is altered by adjusting regulator VR. The commutating capacitors may be connected on the supply side of the transformer TP, and a saturable reactor may be connected in series with each main contact, Fig. 4 (not shown). An interphase transformer arrangement may be used, Fig. 3 (not shown). Specification 688,958 is referred to.
Patent GB-1424688-A (GB)
Title: Filters for electrical oscillations
IPC: H03H9/50
Filed: 1973-02-19
Abstract: 1424688 Electro-mechanical filters SIEMENS AG 19 Feb 1973 [23 March 1972] 7965/73 Heading H3U An electro-mechanical band-pass filter comprises a plurality of resonators 2, 3, 3<SP>1</SP> coupled together by at least one coupling element, the input or output resonators having electrostrictive piezo ceramic transducers 4, 4<SP>1</SP>, the return loss of the filter having more than one maximum in the pass band, DB, and the filter having a maximum of input impedance at a frequency fs, Fig. 5, outside the pass-band but adjacent the high frequency end. At least two of the return loss poles occur at non-physical, i.e. complex frequencies. A coupling element 6 may be connected between end resonators 3, 3<SP>1</SP> in anti- or co-phasal sense, or a capacitor 5 may interconnect the resonators. The transducers may be associated with tuned circuits 7, 8; 7<SP>1</SP>, 8<SP>1</SP>. The resonators are supported at nodes 9 on a base plate (not shown) and vibrate in a flexural mode parallel thereto. The mathematical design technique is discussed. Such filters are used in carrier frequency units. Fig. 4 (not shown) displays the attenuation characteristic.
Patent GB-609445-A (GB)
Title: Improvements in density meters for liquids
IPC: G01N9/26
Filed: 1946-03-14
Abstract: 609,445. Specific-gravity estimating-apparatus. MANCHESTER OIL REFINERY, Ltd., and PORGES, F. March 14, 1946, No. 7993. [Class 97 (iii)] The density of the liquid flowing in a main b is indicated by a U tube o, containing mercury and having its limbs communicating via interposed U tubes j, t, containing mercury, with the top and bottom respectively of a tube e, which communicates at its middle via tube c<2> with the main b above a restricted orifice a therein and at its ends via bends f, g, and tubes w, x with the main b below the orifice a. The reference liquid trapped in the tubes m and u between the mercury in the U tube o and the U tubes j, t, respectively, is a thin and highlyrefined mineral oil or similar liquid. The tube c<2> may be connected to the main through a strainer c<1> and the liquid therein brought to a standard temperature by cooler z. The U tube o may incorporate a float p for operating indicating, recording or controlling mechanism.
Patent GB-981090-A (GB)
Title: Improvements relating to thermostatically controlled regulations for controlling theflow of a fluid medium in dependence upon the temperature thereof
IPC: G05D23/02
Filed: 1961-03-06
Abstract: 981,090. Valves. MECANO-BUNDY G.m.b.H. March 6, 1961 [March 4, 1960], No. 8062/61. Heading F2V. Valve 6 carried by thermal element 7 is opened against spring 9 by thermal plunger 11 contacting a stop 13 carried by bridge 10 on the seat 5, the stop being adjustable so that the valve, in an I.C. engine cooling system, opens at different temperatures during winter or summer. Stop 13 is formed by a screw having a long shank 13a or a short one, 13b which screws into a cup 12 adjustably screwed in and then soldered to the bridge 10. Screw 13 may be replaced by a cam lever acting directly on the stop or on an intermediate rod passing sealingly through a pipe to engage the stop.
Patent GB-636027-A (GB)
Title: Salt baths for the heat treatment of metals
IPC: C21D1/46
Filed: 1945-03-27
Abstract: A salt bath for the heat treatment of metals has a composition comprising essentially alkali metal chlorides, an alkali metal fluoride and 50 per cent to 80 per cent of zinc chloride.  For use between 500 DEG F and 700 DEG F the bath may consist of 8-18 per cent KCl, 10-18 per cent NaCl, 1/4 of 1 per cent to 4 per cent NaF and 60-80 per cent ZnCl2 and between 700 DEG F and 1100 DEG F, 9-20 per cent KCl, 12-25 per cent NaCl, 1/2 of 1 per cent to 3 per cent NaF and 52-80 per cent ZnCle.
Patent GB-744401-A (GB)
Title: Improvements in or relating to electric power supply systems
Inventor: HODGSON KENNETH GEORGE
IPC: H02J9/06
Filed: 1951-04-09
Abstract: 744,401. Standby supply systems. STANDARD TELEPHONES & CABLES, Ltd. April 1, 1952 [April 9, 1951], No. 8220/51. Drawings to Specification. Class 38 (4). [Also in Group XXXVII] Relates to a standby supply system for an A.C. load normally fed from mains, wherein mains failure automatically causes energization of a vibratory inverter from a D.C. stand-by source and change-over of the load from the mains to the inverter output terminals, and consists in arrangements for reducing the delay before the full output of the inverter becomes available. In one arrangement the vibratory reed of a normal vibrator is maintained in operation continuously by the D.C. source, but during normal mains operation a discharge tube in series with inverter contacts is held non- conducting by bias obtained from the mains supply so that the inverter is inoperative. Upon mains failure, the tube conducts, operates a relay to change over the load connections and applies D.C. to the inverter contacts so that the inverter takes over the supply. Further contacts of the relay then short-circuit the tube, so that the full D.C. voltage is applied to the inverter. In other arrangements, the vibrator incorporates the load change-over switch and, during normal mains operation the reed of the vibrator maintained in a stressed . condition away from its normal rest position (but held clear of, or insulated from, the inverter contacts) either by an electromagnet energized from the mains or by permanent energization of its driving coil. Upon mains failure the electromagnet, or driving coil, is de-energized and the vibrator commences operation, quickly attaining its full amplitude of vibration on account of the release of the energy previously stored in the reed. Specifications 656,787 and 744,460 arereferred to.
Patent GB-960022-A (GB)
Title: Process for manufacture of perchlorethylene
IPC: C07C17/361
Filed: 1962-03-02
Abstract: Perchlorethylene and carbon tetrachloride are obtained by the chlorination, in two stages, of propylene and/or unsaturated chlorinated derivatives thereof, involving an additive chlorination in the presence of an iron-based catalyst followed by a chlorinolysis, the additive chlorination being effected by means of excess chlorine from the residual gases of the chlorinolysis, the resulting saturated chlorinated compounds then being subjected to chlorinolysis in a fluidised bed of inert material at 300-600 DEG C. in the presence of sufficient CCl4 such that the molecular ratio of CCl4 to (CCl4+chlorinated propanes) at the inlet of the furnace is 0.4-0.95, and in the presence of an excess of chlorine which is at least sufficient, after recycling to the first stage, for the chlorination of all the unsaturated material fed to the first stage. In worked examples of the process the main products obtained are C2Cl4, CCl4 and C2Cl6.