baber/WOPTO huggingface dataset:
Patent GB-536675-A (GB)
Title: Improvements in or relating to devices for indicating and/or controlling the level of liquid in a container
IPC: F22B37/42
Filed: 1940-02-19
Abstract: 536,675. Indicating and controlling liquid levels. SHERLOCK, J. E., and BRITISH THERMOSTAT CO., Ltd. Feb. 19, 1940, No. 3143. [Class 123 (i)] [Also in Groups XXXV and XXXVII] The apparatus comprises two phials containing volatile liquids, one of which is heated, both being connected to pressure-responsive mechanisms which act in opposition on an electric switch connected to indicating or control apparatus. The extent of immersion of the phials in the liquid determines the dissipation of heat from the heated phial, and consequently the pressure within it. The phials A, B are arranged within a container 4 connected at 5 to a boiler. Each phial consists of an annular space 3 surrounding a central tube 1, which in the phial A contains an electric heater 9. The phials are connected by tubes 6 to bellows 7, 8 carrying axially movable rods 10, 11 which act in opposition on a pivoted lever 12. When the water level is at X, the phial A is at a slightly higher pressure than B due to the action of the heater, and the lever 12 occupies the position shown. If the level sinks and the phials are partly exposed, less heat is dissipated from the phial A to the surrounding vapour and the pressure increases so that the switch lever is moved to close contacts 15, 16 in an electric circuit controlling an electrically operated feed pump or the steam valve of a feed pump, or an audible or visible signal. If heater 9 or phial A become inoperative, pressure in the bellows 7 decreases and contacts 15, 17 are closed to operate an alarm. If phial B becomes inoperative, pressure in the bellows 8 decreases and an abutment 18 closes a switch 19 to operate an alarm. If the water level falls unduly low, pressure in phial A increases still further, and an abutment 20 opens switch contacts 21 in a circuit controlling the boiler fuel supply or an alarm, the switch lever 12 being flexible to allow bending. In a constructional form, Fig. 6, the phials (of which only A is shown) are supported from a cover plate 22 of the container 4, and the pipes 6 are connected to bellows 7, 8, the rods 10, 11 of which act upon the lever 12a. The switch 27 is actuated by a push button 28 through an arm 29 in contact with two studs 29a on the lever 12a. The switch is closed by movement of the lever 12a in either direction. A further two-way switch 30 is actuated by an arm 34 in contact with a spring- pressed plunger 35 on the end of the rod 10. The bellows 7 is loaded by a spring 7a.. The switch 30 is first actuated and controls the circuit of a relay which controls the water feed, and a further fall in water level closes switch 27 which actuates an alarm. Failure of the bellows 7 or heater 9 moves the lever 12a in the opposite direction, which also closes switch 27, and switch 30 to its alternative contact, so that both alarms are operated.
Patent GB-333147-A (GB)
Title: Improvements in and relating to vat dyestuff derivatives
IPC: C09B9/02
Filed: 1929-01-30
Abstract: 333,147. Hooley, L. J., Thomas, J., and Scottish Dyes, Ltd. Jan. 30, 1929. Azo dyes; dye preparations. - Dispersing agents are mixed with ester derivatives of vat dyestuffs and the mixtures dried. As dispersing agents may be used sulphite cellulose liquor, lignin-sulphonic acids, substances obtained by the amidation or oxidation of sulphite cellulose liquor, and condensation products of naphthalene sulphonic acids with formaldehyde, soaps, molasses, saponin, alkylnaphthalene sulphonic acids, or naphthalene di- and trisulphonic acids. The products are applied to the colouring of wool and acetyl silk. According to examples :-(1) the ester obtained from indigo, zinc pyridine and methylsulphuric acid chloride, or the sodium salt of the disulphuric ester, as aqueous paste, is mixed with sulphite cellulose liquor, dried and ground; (2) leuco indanthrone disulphuric ester is mixed with sulphite cellulose liquor, dried and ground, or with soap and caustic soda, dried ground; or with Neomerpin N (Registered Trade Mark); (3) the sodium salt of the disulphuric acid ester of leuco indigo in mixed with sulphite cellulose liquor and dried. The esters may be obtained by the processes of Specifications 186,057 and 247,787.
Patent GB-692059-A (GB)
Title: Improvements in pyrophoric lighters
IPC: F23Q2/34
Filed: 1951-02-12
Abstract: 692,059. Friction lighters. RACEK, A, and RAGANITSCH, J. Feb. 12, . 1951 [Feb. 15,1950], No. 3312/51. Class 75(iii) , A friction lighter has a downwardly closed gasification space formed by a wick jacket of a diameter at the most six times the wick thickness and with its top extending in a plane at right angles to the wick axis and around the exposed top of the wick 9 protruding from a short wick holder 8. The wick jacket may be formed by an upturned rim 15 on the end of a tank body part 10 removably slid on the top of the fuel. tank liner 5, Fig. 1, or by a pressed sheet metal pan 20, Fig. 3, fitted into the top of a fuel tank 19, or. by an embossed annular portion 28, Fig. 4, formed on the top wall of a fuel tank 27 or by the inward rim of an aperture 32 of a tank body 30 of a table lighter, Fig. 5. A slot 16, Fig. 1, 23, Fig. 3, or a flattening of the embossed portion 28, Fig. 4, is provided adjacent the friction wheel to enable the sparks therefrom to ignite the wick 9. The oblique angular air flow 17 past rim 15, shown by arrows in Fig. 1 causes a sucking effect on the flame at the wick base to broaden and shorten the flame 18. The bottom end of the fuel tank 4 Fig. 1, is closed by a tank body bottom part 11 slid thereon.
Patent GB-1370496-A (GB)
Title: Combined coupling and braking device to be operated by a pressure  medium
IPC: B30B15/10
Filed: 1972-01-24
Abstract: 1370496 Clutch/brake combination; friction clutches; full-face disc brakes ORTLINGHAUS Gebr 24 Jan 1972 [10 Feb 1971] 3314/72 Headings F2L F2C and F2E A clutch/brake combination for a press or cutter comprises a hub 1 to be driven, a clutch/ brake plate 14 biased by springs 13 into engagement with a member 35 held against rotation for braking, and a driving member 33 with which the plate 14 engages (through friction surfaces) to drive the hub 1 when pneumatic pressure is supplied to the space 42 to move a piston 5. The clutch/brake plate 14 is slidable on pins 9 which pass through apertures in an annular ring 15 secured by webs 141 to the outer part of the plate 14, the pins also passing through the piston 5, the springs 13 acting between the ring 15 and a flange 2 of the hub, a counter abutment 26 for the clutch/brake plate 14 being secured to this hub flange, an opposite flange 3 supporting the other counterabutment 22. Cooling fins 30, 30<SP>1</SP>, 29, 29<SP>1</SP> are provided on the outside, with passages 27, 28, and 31, and a cooling fin 32 on the plate 14, also aiding air circulation through the device.
Patent GB-1278171-A (GB)
Title: A process for the joining of coaxial cables having intermediate insulation of low melting point material, in particular of coaxial "micro" cables having intermediate insulation of expanded plastics material, and the joiny thus obtained
IPC: H02G15/08
Filed: 1970-01-23
Abstract: 1278171 Joining coaxial cables S I R T I SOC ITALIANA RETI TELEFONICHE INTERURBANE SpA 23 Jan 1970 [18 Sept 1969] 3370/70 Heading H2E A process for the electrical interconnection of coaxial cables, each having an insulating sheath of low melting point material, between the coaxial conductors, comprising the previous substitution of the end portion of the sheath by a tube of high melting point insulating material so that when joining two such cables the sheath does not melt and allow said coaxial conductors to short to one another. The substitution is effected by heating said sheath to cause it to fuse and contract so enabling the tube to be inserted between the conductors (see Fig. 8). Each cable 1 has its layers of paper insulation 6, support tube of steel 5, conductive tube of copper 4 and polythene sheath 3 cut back successively, insulating tape 7 being preferably added after cutting the paper layer through, adding a wire pigtail 8 and welding it to the support 5 and conductive 4 tubes preferably before cutting the conductive tube the welding heat causing the insulating sheath 3 to fuse and contract inside the conductive tube. The high melting point tube is then added. The inner conductors 2, 2<SP>1</SP> are welded together, after inserting them into a slotted tube 13, preferably using tin. A slotted plastics tube 15 is clipped over the join so formed, a thermosetting plastics tube 11 then being slid over this tube 15, heated to melting point and compressed by the tube 11 as it shrinks. The copper tube 10 is then slid over the join and welded to said pigtails, a plastics tube 12 being slid over the joint and bound in position to complete the joint insulation.
Patent GB-867319-A (GB)
Title: Improvements in cotton mesh and like bags
IPC: D03D3/00
Filed: 1956-02-03
Abstract: 867,319. Woven bags. FIRMIN & CO. (LONDON) Ltd. (Ming Weaving Manufactory Ltd., W.) May 3, 1957 [Feb. 3, 1956], No. 3464/56. Class 142(4) Open-mesh bags are woven from cotton which has been previously boiled.
Patent GB-284680-A (GB)
Title: Method of forming corrugated bags of rubber or other elastic material
IPC: B29C49/06
Filed: 1928-02-03
Abstract: 284,680. McPherson, H. L., and Weatherford, J. H. Feb. 3, 1927. [Convention date]. Moulding indiarubber and celluloid hollow-ware. - Corrugated rubber &c. bags are formed by forming a closed end tube of plastic vulcanizable material and forcing such tube against a corrugated mould surface. As shown, a tube 29 is formed about a tubular core 30 and inserted into a twopart mould 12, 13 having a corrugated surface 22. Each mould section is formed with a heating- chamber 16 fitted with inlet and outlet pipes 18, 20 for steam. The lower end of the tube is closed and is supported by a cap 35 having a flattened stem 36 frictionally engaging the tube 30. A cover 25 fitting over the mould is chambered at 26 for admission of compressed air or steam supplied through a pipe 27. In operation, a sheet of rubber is rolled into a tube around the core 30 and the end closed, the upper end being thickened to engage the upper mould portion. After insertion into the mould, the sections 12,. 13 and cover 25 are forced together and air is admitted through the chamber 26 to distend the tube into the mould; steam is then admitted to the chambers 16 for vulcanization. The corrugations may be formed by forcing a tube on to a corrugated tubular mandrel by external steam pressure, the corrugations in the mandrel being vented interiorly. The Specification as open to inspection under Sect. 91 (3) (a) refers also to celluloid. This subject-matter does not appear in the Specification as accepted.
Patent GB-1094714-A (GB)
Title: Improvements in and relating to lighters
IPC: F23Q2/08
Filed: 1965-01-27
Abstract: 1,094,714. Pyrophoric lighters. ARTHUR SALM Inc. Jan. 27, 1965 [Jan. 30, 1964], No. 3524/65. Heading F4F. A table or pocket pyrophoric lighter comprises a milled hardened steel flint wheel 46 mounted on a shaft 40 supported from a reservoir 22 or a wind guard 36 welded to the reservoir 22, and having ratchet teeth thereon engaged by a pawl formed by slots in a U- section driver 58 mounted on the shaft 40, the driver 58 being urged downwards by a U- shaped yoke receiving one end of a tensioned coil spring 66 secured at its other end to the lower end of a tube 68 secured within the reservoir, so that on opening a cover 14 (partially shown), hinged to a body portion 12, the driver 58 is rotated upwards on the shaft 40 by a pin 70 on the cover engaging a pivoted detent 72 on the driver, the pawl moving over the ratchet teeth on the wheel 46, until the pin 70 releases the detent 72 whereupon the driver moves downwards urged by the spring 66, the pawl engaging the ratchet teeth and rotating the wheel 46 against a flint 48; alternatively the pin 70 may be on the driver 58 and the pivoted detent 72 on the cover 14. The detent 72 is urged upwardly by a coil spring, Fig. 6 (not shown), so that the detent yields to the pin 70 as the cover is closed. The cover 14 has an arm, Fig. 1 (not shown), engaging a flat spring (20) secured in the body portion near the cover hinge (16) to produce a toggle action maintaining the cover open or closed. The shaft 40 may be retained in trunnions on the wind guard or the reservoir by pinning or a threaded retainer. The reservoir 22 may be retained in the body portion 12 by friction or by extending the screw 52, which retains a flint spring 54, through the body portion 12. The cover hinge is welded to the body portion 12 and to the cover 14.
Patent GB-525882-A (GB)
Title: Improvements in or relating to resonant lines for high frequency electric circuits
IPC: H01P7/04
Filed: 1939-02-02
Abstract: 525,882. Electric resonators; valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 2, 1939, No. 3568. Convention date, Feb. 2, 1938. [Classes 40 (iii) and 40 (v)] A resonator of the coaxial-cylinder type is provided with a heating coil and an air-blower to accelerate temperature equilibrium, and with means for compensating errors in the temperaturecompensating system. It may be coupled to an oscillator in such a way as to produce a push-pull circuit with a single valve. The inner conductor is in two parts 2, 3, of different diameters, which are connected to one another and to the outer conductor 1 by massive bronze plates 53, 54, heat conduction being facilitated by copper rings 57 and otherwise. Variation of tuning with temperature is checked by a bellows 5 and a rod 6 made of an alloy with a small coefficient of expansion, and small changes in the length of the rod 6 are neutralized by a compensator unit comprising a shell 7 of suitable metal, which expands to the left when the rod 6 expands to the right, nuts 8, 9, 10, 11, Fig. 1 (and Fig. 2, not shown) enabling the point at which the rod 6 is effectively attached to the conductor 2 to be adjusted. The rod 6 may be of the alloy known under the registered trade mark "Invar," and a small portion of it may be replaced by material having a different coefficient of expansion. The resonator is mounted on shock-absorbing buffers 13. In order that temperature may be evenly distributed, air is driven by a blower through a pipe 59 and housing 18 so as to flow through the conductors as shown by arrows, or the air may be sucked in the opposite direction. The outer conductor 1 may be made of material having a higher electrical resistivity in order that its temperature may rise as fast as that of the inner conductor 2. In order to minimize the time required for establishing thermal equilibrium a thermostatically controlled heating-coil 61 is provided. It may be cut out of circuit by a relay when the associated thermionic oscillator 62, Fig. 3, is in operation. Valve circuits. The resonator 1, 2 is connected in push-pull relation to a single valve 62, the grid and plate being coupled to the resonator in opposite senses through loops 66, 67. Condensers 68, 71 serve to regulate the feed-back, and condenser 72 replaces the capacity of the omitted second valve. A heater-wire output circuit 73 is provided.
Patent GB-265972-A (GB)
Title: Method of depilating skins and hides
IPC: C14C1/06
Filed: 1927-02-09
Abstract: 265,972. Massin, M. Feb. 10, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Treatment preliminary to tanning.-Skins and hides are depilated by the action of bacilli which are applied in a culture spread upon the flesh side of the skin by a brush, a pistol, an atomizer, or by drenching. The culture employed is stated to contain micro-cocci, diplo-cocci and streptococci.
Patent GB-1460582-A (GB)
Title: Production of ketones
IPC: C07C49/04
Filed: 1973-01-24
Abstract: 1460582 Ketone production BURMAH OIL TRADING Ltd 17 Jan 1974 [24 Jan 1973] 3694/73 Heading C2C Ketones are prepared by oxidizing olefinically unsaturated compounds containing at least 3C with organic hydroperoxides in the presence as catalyst of a metal complex containing the grouping where M is Pd or Pt. A solvent may be used- Examples prepare 2-dodecanone and 2-hexadecanone from 1-dodecene and 1-hexadecene respectively using t-butyl hydroperoxide with bis (dithiobenzyl) palladium or platinum.
Patent GB-933731-A (GB)
Title: Improvements relating to the electrolytic removal of metal
Inventor: WILKINSON BERNARD HALL
IPC: B23H7/28
Filed: 1961-01-31
Abstract: 933,731. Electrolytic removal of metal. ROLLS-ROYCE Ltd. Jan. 24, 1962 [Jan. 31, 1961], No. 3714/61. Class 41. A cathodic tool for electrolytically removing metal from an anodic workpiece comprises a bundle of abutting or adjacent open-ended metallic tubes through at least some of which electrolyte is passed towards the workpiece. Electrolyte may be withdrawn through others of the tubes or through the spaces between the tubes or need not be withdrawn through the tool at all. Fig. 4 shows a tool 27 comprising tubes 22 having their upper ends cast into a layer 27<SP>1</SP> of alloy. Each tube has an outer insulating layer. To ensure that the boundary surfaces of a cavity are not uneven, due to the action of the separate tubes, relative motion may be imparted to the workpiece and tool, or, as shown in Fig. 8, the tubes may be surrounded by two layers 56, 57 of insulated metallic ribbon. The current density on the cutting face of the layers 56, 57 may be made variable to counteract a tendency to cut slower at the tool edge. Fig. 13 shows a tool 80 with a face 83 shaped by offsetting the ends of tubes 81 from each other. Fig. 7 shows apparatus for moving a workpiece 34 while a tool 33 is advanced towards the work. The work is mounted on a table 35 movable in the direction 38 over a sub-table 37 which itself is movable in direction 42 over slides 41 on a machine top 43. Motion is imparted from a rotating arm 53 via a rod 46 which is jointed to the arm at 51, spring loaded at 55 to contact an annular former plate 44, and jointed to the machine top 43 at 47 and to the table 35 at 48. Tapering cavities, e.g. frusto-conical, can be formed by apparatus similar to that shown in Fig. 7 (Fig. 9, not shown) which varies the amplitude of oscillation of the workpiece as the tool advances. To vary the amplitude, a ring similar to the ring 44 is raised and lowered by a cam plate operated through a servo link to the tool 33. By appropriate formation of the cam plate and former plate it is possible to produce different tapers on different sides of a cavity. Two tools may be used in forming a cavity as shown in Fig. 14 and the second tool could be used to form an undercut. Fig. 15 shows a tool 90 which is advanced towards a workpiece 93 by a motor 109. The tool-workpiece gap 94 may be maintained constant by controlling the motor 109 in accordance with a signal derived either from the pressure difference between electrolyte flowing towards the workpiece through the tool and that flowing away from the workpiece or from measurements both of the current density at selected portions of the tool and the conductivity of the electrolyte. The electrolyte is recirculated through a filter 103. Use of a tool without sparking, a voltage of 12, a current density of 100 amps./ sq. inch and an electrolyte pressure of 100- 150 lbs./sq. inch are referred to.
Patent GB-881405-A (GB)
Title: Method of operating a furnace in which the material to be treated is reduced
IPC: C21B13/00
Filed: 1958-02-05
Abstract: In a shaft furnace in which ores are reduced with solid fuel, an additional reducing agent in the form of gas, or vaporised or gasified oil is admitted into the reaction zone above the tuyeres through evenly spaced, movable nozzles disposed 0,5-16,0 metres above the tuyeres.  The nozzles may be arranged in rows on different planes, and the pressure and velocity of the gas may be varied at different levels.  The reducing agent may be preheated to different temperatures within the range 600 DEG C.-1300 DEG C., and may be supplied to single nozzles or to blocks of nozzles at different temperatures in order to vary the extent and position of the reducing zone.  The gases or vapours may be introduced into the furnace in a radial and/or tangential direction or are deflected towards the tangential.  Oxygen or steam may be supplied at the tuyeres.  A typical reducing gas is a mixture of CO and H2 derived from the incomplete oxidation of the methane in natural gas.
Patent GB-621234-A (GB)
Title: Electrical plug and socket connectors
IPC: H01R13/453
Filed: 1947-02-07
Abstract: 621,234. Two-part couplings. PARSONS, Ltd., C. H., and HANDLEY, G. B. Feb. 7, 1947, No. 3753. [Class 38 (i)] A socket of the type having a shutter 26 operated by means co-operating with the earth pin of a plug, comprises a porcelain base 1 recessed to receive current sockets 13, 14 and apertured at 19 to receive a U-shaped earthing socket 34. The shutter is.pivoted at 28 on an insulating piece 29 secured to the base and is operated by a lever 27 pivoted at 30 on the piece 29 and at one end to the shutter, the free end of the lever being bent at 32 to present a sloping earth pin engaging face opposite an extended arm 37 of the socket 34 and being urged to this position by a hairpin spring 43. The arm 37 may be formed separate from the socket which is secured in the base by the stem of a binding post 21 engaging a laterally extending portion 35 thereof. The underside of the base is recessed to receive an earthing strip 25 with which the pivot pin 30, the earthing socket and the spring 43 are in contact.
Patent GB-766334-A (GB)
Title: Improvements in cranes
Inventor: ERNST HELLMUT
IPC: B66C13/12
Filed: 1954-02-09
Abstract: 766,334. Stewing jib cranes. MASCHINENFABRIK AUGSBURG-NURNBERG AKT.- GES. Feb. 9, 1954, No. 3756/54. Class 78 (4). The slewing mast 3, 4 of a crane is mounted directly, without the interposition of a platform, in the supporting structure or gantry of the crane and forms, at its lower end, the driver's cabin 7. The mast is supported by a thrust bearing 6 and by an upper roller guide (not shown). It is of square section and comprises four standards 3 joined by sheet metal members 4. It is fitted with brackets supporting the hoisting gear 11, the slewing gear (not shown) and the luffing gear 13. Access to the cabin is by a ladder 14 leading to an opening 15 in the mast.
Patent GB-566011-A (GB)
Title: Magnetic plugs for gear and other housings
IPC: B03C1/28
Filed: 1943-03-09
Abstract: 566,011. Magnetic separators. DEHN, F. B. (Lisle Corporation). March 9, 1943, No. 3820. [Class 72] A magnetic plug for gear and other housings, comprising a shell S threaded at 13 to screw into a boss 10 of the housing H, is provided with a recess 14 in which is cast a tubular sleeve 15 which may be retained in position by welding as at 16. A horseshoe magnet M is held in position in the recess 14 by a bar 19 whose ends are held in position by turning over at 20 portions of the upper part of the sleeve 15. In a modification, the sleeve 15 is omitted, and the shell 5 is provided with a pair of fingers which are bent over to retain the bar 19 which may also be formed of spring metal.
Patent GB-1237067-A (GB)
Title: Photographic silver halide emulsions
Inventor: SMITH DONALD ARTHUR
IPC: G03C1/053
Filed: 1969-01-23
Abstract: 1,237,067. Aminoalkyl thioethers. EASTMAN KODAK CO. 23 Jan., 1969 [29 Jan., 1968], No. 3883/69. Heading C2C. [Also in Divisions C3 and G2] 3-Methylthiopropylamine is prepared by adding methanethiol followed by 3-homopropylamine hydrobromide to a solution of sodium methoxide in methanol at 0 C. 3 - (2 - Diethylaminoethylthio) propanol is prepared similarly using 2-diethylaminoethanethiol hydrochloride and 3-bromopropanol. 2-Methylthioethylamine is prepared by cooling to - 5 C. a solution of methanethiol and sodium methoxide in methanol and adding ethyleneimine over a 20-minute period.