baber/WOPTO huggingface dataset:
Patent GB-312754-A (GB)
Title: Improvements in the purification of polluted liquids
IPC: C02F1/52
Filed: 1928-04-10
Abstract: 312,754. Elkington, H. D., (Travers. Lewis Process Corporation). April 10, 1928. Treating-materials.--Sewage or industrial waste liquor is rendered alkaline to a degree corresponding to a hydrogen ion concentration: between pH8 and pH11, an electrolyte-producing material is added to precipitate the colloids and a coagulant to carry down the matter in suspension. Lime may be used as the alkaline reagent, calcium sulphate as the electrolyte producer and ferrous sulphate as coagulant, the three materials being added to the sewage as a mixture. The following are also mentioned as suitable electrolyteprodueers :-calcium chloride, barium chloride, strontium chloride, osmium chloride, thallium chloride, thallium sulphate, titanium chloride, thorium chloride, zirconium chloride and zirconium sulphate. The major portion of the treating mixture may be a sludge, consisting mainly of calcium carbonate, calcium sulphate and ferr us hydrate, obtained from waste acid liquors from the pickling vats of steel mills, lime and ferrous sulphate being added to the sludge to secure the requisite amount of alkali and coagulant. Another waste material which may be used is the dust from electrical or mechanical precipitators employed in the manufacture of cement. A suitable material is also obtained by drying and pulverizing the matter settling in tanks in which the various waste liquors from alkali plant for producing chloride of lime, chlorine, and caustic soda are mixed. The colloidal content of the liquid under treatment may be preliminarily determined by dialysis carried out at a low temperature and with the exclusion of oxygen.
Patent GB-196611-A (GB)
Title: Improvements relating to expansion devices for liquid-containing tanks and the like
IPC: H01F27/14
Filed: 1923-04-18
Abstract: 196,611. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Dann, W. M.). April 18, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Transformers.-Expansion devices for tanks, especially tanks for oil-immersed electrical apparatus such as transformers, comprise a container 4, Figs. 1 and 2, having compartments 11, 12, the compartment 11 having a vent 17 to the atmosphere and a pipe 13 sealed by liquid in the compartment 12. A pipe 15 leads from the upper part of the tank 1 to the upper part of the compartment 12, both spaces being filled with inert gas such as nitrogen. In modifications, the device comprises compartments 19, 20, Fig. 3, communicating with each other through a liquid-sealed aperture in a partition 18, or compartments 24, 25, Fig. 5, connected by a pipe 27. One expansion device may serve a number of tanks.
Patent GB-661307-A (GB)
Title: Method of constructing a truss bridge of reinforced concrete
IPC: E01D6/00
Filed: 1949-04-21
Abstract: 661,307. Reinforced concrete bridges; supports for beams. FINSTERWALDER, W. and JECHT, R. April 21, 1949 [April 22, 1948]], No. 10589/49. Classes 20(i) and 20(ii) In a multi-span reinforced concrete bridge, Fig. 1 the spans are supported by cantilever trusses 4, 5, 6, 7, constructed as networks of compression and tension members, which extend symmetrically from foundation pillars 2, 3 in both directions; the opposed ends of adjacent cantilevers being separated by a gap 1 and vertically interconnected by a known linkage, Fig. 3 (not shown), while the ends of the bridge are vertically supported on foundations 8, 9 by conventional means (e.g. roller bearings). In construction, Fig. 8, the reinforcement of the first two bays of each cantilever above each of the pillars is erected according to conventional structural steel practice and the compression members (the lower chord 21 and the vertical posts 22) are embedded in concrete, while the tension members (the upper chord 24 and the diagonals 23) are left uncoated. An auxiliary movable scaffold comprising a plurality of parallel beams 17 distributed over the width of the bridge and resting on the last two completed junctions 18 is erected to project beyond the end bay by a distance corresponding to one additional bay, and supports scaffolding and shuttering 19 whereby the reinforcement of the following bay is erected and sleeve jointed to the completed construction. The compression members are embedded in concrete and the scaffolding shifted for the construction of the following bay. When a cantilever is completed, the tension members are prestressed by the vertical load and are then embedded in concrete. In a modification, Fig. 6, the vertical posts 33 on the upper chord 31 are tension members while the diagonals 30 and the lower chord are compression members. The short reinforcing bars of the vertical posts and the upper chord are anchored at each junction, while the upper chord also contains other long bars 35 which run the whole length of the bridge, to which their ends are anchored. The tension members are prevented from bonding with the concrete by, e.g. a coating of plastic material and after each bay has been constructed and the concrete in which the reinforcement is embedded has set, a predetermined tension is applied to the short bars. and when the cantilever is complete the long bars are prestressed to prevent any tension being exerted on the upper chord concrete by the maximum load on the completed bridge. The reinforcement of the tension members may run in bores in the concrete, which are later filled with cement.
Patent GB-1010075-A (GB)
Title: Polymerization of propylene
IPC: C08F110/06
Filed: 1964-03-12
Abstract: Polypropylene is made by polymerizing propylene with a catalyst comprising (1) a compound selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Th, U, Fe, Co, and Ni, and (2) a separately prepared complex of an alkali metal, an alkali metal phosphide, nitride, arsenide, stibide, or mixture, with an organozinc or an organoaluminium compound.  The catalyst may also include as a third component, a compound having at least one hydrocarbonamino group, attached to a silicon atom, a compound having at least one hydrocarbonamino group attached to a titanium atom, or a hydrocarbon phosphorus compound, The Specification contains extensive lists of catalyst components. The polymerization is effected in an inert diluent, and the polymer recovered by known "low-pressure" techniques, e.g. treatment with water, steam, alcohols, acids, ammonia, sodium hydroxide, ethanolamine, citric acid, or ethylene diamine tetraacetic acid. Hydrogen may be present during the polymerization.  Exemplified catalysts are (1) an Al(C2H5)3 and Na complex, TiCl4 reduced with Al, and tetrakis-(dimethylamino) silane, (2) As (1) but in which complex is diethylzinc and Na, (3) as (1) but in which the silane is replaced by a tributyl phosphorus solution (4) an Al(C2H5)2Cl and N9 complex, TiCl4 reduced with Al, and tributyl phosphorus, and (5) a complex of Al(C2H5)3 and trisodium phosphide, TiCl4 reduced with Al, and tributyl phosphorus, and (6) a complex of Li and Al(C2H5)3, TiCl4 reduced with Al, and tetrakis-(dimethylamino)-silane.
Patent GB-1496539-A (GB)
Title: Switch for a printed or like circuit
IPC: H01H1/16
Filed: 1975-03-13
Abstract: 1496539 Snap - action switches SOC D'ETUDES ET DE CONSTRUCTION DE MATERIEL ELECTRONIQUE 13 March 1975 [20 March 1974] 10611/75 Heading H1N A switch assembly for a printed circuit comprises a housing 1, two metal contact terminals 30 mounted in a wall 4 of the housing and connected to outer pins 28, a rectilinear insulating slideway 6 parallel to the wall 4 with an aperture 13 in the region of the terminals 30, a flat slide 8 of electrically insulating material with actuating means 42 accessible from outside the housing and a cavity 14 opposite the actuating means receiving a contact roller 16, and a spring, e.g. a wire 20 biasing the roller outwards of the cavity. Opposed surfaces of the cavity 14 selectively engage the roller to urge it into and out of bridging contact with the terminals 30. As shown the assembly comprises two switches in a common housing, the switches having a common slideway 6 which carries a slide 8 on either side of a partition 34. The two switches may operate independently, or the slides may be coupled by a pin 46, the slides being asymmetric and being inserted either the same way round so that the switches are on or off together or the opposite way (Fig. 4, not shown) so that one is on when the other is off, the slides carrying different-coloured spots 40 on either side of the button 10 to show which way round the slide is mounted. The housing may also be colour coded to indicate whether the switches are independent, or coupled the same or the opposite way round. In alternative embodiments (not shown) the slideway 6 may have further partitions and carry more than two switches, or a number of double switch units may be mounted in a common housing, the switches being independent or coupled as desired.
Patent GB-473055-A (GB)
Title: Improvements in or relating to the starting of internal combustion engines
IPC: F02N99/00
Filed: 1936-04-08
Abstract: 473,055. Turning-gear. BOSCH AKT.- GES., R. April 8, 1936, No. 10690/37. Convention date, April 25, 1935. Divided, out of 467,621. [Class 7 (v)] An engine-starter comprises a fly-wheel 31 on the shaft 7 of an electric or other power starting device 30 having power-transmitting connections of different gear ratio with the engine shaft 6, which is rotated from the fly-wheel first at one speed and then at a higher speed by decreasing the gear ratio. As shown, the electric motor 30 drives through planetary gearing 8-10 a shaft 32 fitted with a clutch 4 movable by means of a lever 38 into engagement with a clutch member 5 on the engine shaft 6. The lever 38 is also used to bring into mesh with a gear 37 on the engine shaft a member 36 of a reduction gear 33, 34 driven from the shaft 32. In operation, the fly-wheel 31 is set in motion by the motor 30 and the gears 36, 37 are engaged, so that the engine shaft is driven slowly through the gearing 8-10, 33-37. When the engine has been given a few turns, the lever 38 is operated to disengage the gear 36 and to engage the clutch 4, 5, so that the engine shaft is turned at a higher speed ratio.
Patent GB-388594-A (GB)
Title: Improvements relating to a device for testing and treating a subject who is hard of hearing
IPC: H04R25/00
Filed: 1932-04-14
Abstract: 388,594. Transformers. M A R V E L , O. E., 304, powers Building, Grand Rapids, Michigan, U.S.A. April 14, 1932, No. 10691. Convention date, April 17, 1931. [Class 38 (ii).] Apparatus for testing and treating deafness comprises a valve generator having means to vary the frequency generated throughout a wide range of audible frequencies without change of volume and additional means provided to vary widely the volume without change in the frequency. The Figure shows a generator 11 having a transformer 15 coupling the grid and plate circuits and provided with a moveable core 17 for adjusting frequency.
Patent GB-1450663-A (GB)
Title: Orbital crankshaft lathe mechanism and methods of machining
IPC: B23B5/18
Filed: 1974-03-11
Abstract: 1450663 Machining crank-shafts WICKES CORP 11 March 1974 [16 April 1973] 10695/74 Heading B3T  Apparatus for machining crank-shafts having offset abutting eccentric crank-pins comprises a bed B with a transverse frame B<SP>1</SP> supporting a head and tailstock 1 and 2 respectively between which a crank-shaft W to be machined is rotatably mounted, girt assemblies M are mounted for transverse displacement with respect to the axis of rotation of the crank-shaft W on trays 3 and include master crank-shafts 4, 5 on which the girts G are mounted and which are driven in synchronism with the crank-shaft to be machined, whereby cutting tools T carried by the girts move in the precise orbital movement relative to the crank-shaft to be machined. The infeed of the tool girts is effected by ball screws 5 which provide a rapid in traverse and a slow cutting traverse towards the crank-shaft W. The cutting tools 18, 19 on adjacent tool holders 20, 21 are secured to respective adjacent girts 25, 26 the tool holders being relieved at 20a, 21a respectively to permit the cutting tools, which overlap in motion, to pass each other during their orbital path in course of the crank-pin machining operation.
Patent GB-107015-A (GB)
IPC: F01D15/02
Abstract: 107,015. Westinghouse Machine Co., (Assignees of Flanders, W. B.). June 9, 1916, [Convention date]. Motor power plant.-A marine turbine installation consists of two sections 2, 3, the section 2 comprising a high-pressure element 4 and an intermediate-pressure element 5, while the section 3 comprises an intermediate-pressure element 9 and two low-pressure elements 10, 11. The inter-connecting valve-controlled pipes 16, 18, 24, 26 are so arranged that (1) for full power the motive fluid from the high-pressure element 4 is delivered in parallel to the elements 5, 9, which deliver respectively to the elements 11, 10 having exhaust ports 15<a>, 15 communicating with the condenser 22, and (2) for reduced power the elements 4, 5, 9, 10 are connected in series, and, if desired, the element 11 may operate in parallel with the element 10. By varying the position of the port 13 with respect to the working passage of the section 2, the power developed by the two sections 2, 3 may be suitably proportioned. A valvecontrolled port 30 leading to a condenser enables section 2 to operate independently of section 3, and means may be provided for supplying highpressure fluid to the section 3 by the port 14. Ports 32, 33 may communicate with a low-pressure supply, or be used to tap steam from the turbine. Reversing elements 29, 31 are provided.
Patent GB-854422-A (GB)
Title: Improvements in or relating to roller loading and cutter lifting gear for gang mowers
IPC: A01D75/30
Filed: 1959-03-26
Abstract: 854,422. Lawn-mowers. GREEN & SON Ltd., T., BRITTAIN, L., and LEAH, E. March 26, 1959, No. 10732/59. Class 6(2). Each unit of a gang mower comprises a frame D attached to the traction vehicle and having an inverted U-shaped member E for straddling an axle B about which a pair of ground wheels W rotate. Side plates C fixed to the axle B support a roller R, cutter cylinder O and ledger blade N, and are connected by means of a link K and chain H to a lever F pivoted to a bracket G bolted to the frame D, the link K being pivoted to a bracket L fixed on the ledger blade. An arm A, rigidly secured to the axle B, is connected at its free end, via a tension spring S, with the lever F. With the lever in the position shown in Fig. 1, the spring tends to rotate the arm A in an anticlockwise direction about the axis of the axle B, thereby keeping the roller R in contact with the ground, the action of the spring being controlled by a stop N on the lever F engaging the bracket G. When the lever is pivoted to engage the stop T, the axle and sideplates C are rotated relative to the frame D, rendering the cutting cylinder inoperative. During the movement of the lever, the point of attachment P of the spring passes over the pivot pavit of the lever, and the spring then acts to urge the lever against the stop T.
Patent GB-573893-A (GB)
Title: A new or improved sharpener for razor blades
IPC: B24D15/08
Filed: 1944-06-05
Abstract: 573,893. Razor blade sharpeners. KINGDON, J. B. June 5, 1944, No. 10761. [Class 60] In a stropping device for razor blades &c. of the kind in which the blade is drawn between opposed, alternating sharpening members, the sharpening members consist of ribs, the crests of which form the sharpening surfaces disposed in planes at an acute angle. The sharpener consists of a moulded block of glass &c. having a channel-like depression 2 into which ribs 3, which are of curved formation, project, to present sharpening surfaces of slight thickness. The operative surfaces 4 of each of the ribs lie in a common plane slightly inclined to the vertical. Curved upper portions 5 form an entrance for the blade which terminates at the intersection of the two planes. Sharpening of the blade is accomplished by pressing it in between the ribs so that it is slightly flexed and causing a longitudinal motion between the ribs.
Patent GB-677999-A (GB)
Title: Improvements in or relating to electric current conversion systems
IPC: H02M7/06
Filed: 1949-04-22
Abstract: 677,999. Rectifying. GENERAL ELECTRIC CO., Ltd., and DALE, S. H. April 24, 1950 [April 22, 1949], No. 10765/49. Class 38 (ii). In a polyphase rectifier or invertor having at least one rectifier device such as a vapour arc rectifier 29 and one or more transformers 10 having first windings 14 ... 16 star connected to an A.C. supply 11 ... 13 and forming a neutral point 17 for the D.C. negative pole, and second windings 20 ... 22 cyclically interconnected, such as in interstar, between the first windings 14 ... 16 and anodes 26 ... 28 of the convertor 29 to form an auto-transformer arrangement, the latter windings are so arranged that when any one convertor anode conducts, the magneto-motive forces set up by the windings of each transformer limb substantially balance out each other. The transformer may comprise a single multi-limb core, or a plurality of single phase cores, and the invention is also applicable to six-phase fork connection. The percentage ratings of the auto-transformers compared with equivalent double wound transformers are given in the Specification. Output voltage variation may be obtained by grid control or by connecting either the A.C. supply or the second windings to tappings on the first windings.
Patent GB-145391-A (GB)
Title: Improved blowhead for the finishing mould of a bottle-making machine
IPC: C03B9/36
Filed: 1919-11-10
Abstract: 145,391. Berger, T. Nov. 10, 1919. Blowing. - A blowhead for the finishing- mould of a bottlemaking machine consists of spring-controlled, telescopic parts whose displacement by means of a hand lever allows the air duct to be opened gradually. The blow head consists of a nozzle 4, Fig. 2, secured to a cylinder 10 which is free to slide on the lower end of a hollow spindle 9 to which the air-supply pipe is attached. A perforated head 11 secured to the spindle is housed in the cylinder, and a spring 12 tends to hold the nozzle 4 and the head 11 apart, so that a lateral outlet of the duct 13 in the spindle is covered by the upper part of the cylinder. Another cylinder 14 secured to the cylinder 10 contains a spring 15 which bears against a gland 16 capable of sliding in the cylinder 14 and on the spindle 9. Two nuts 17, 18 are screwed in the spindle 9. When the blow-head is lowered bv means of a handlever, so that the nozzle makes contact with the ring mould, further movement of the hand lever causes compression of the spring 12 which is weaker than the spring 15. The duct 13 is partly opened, as shown in Fig. 2, and air is admitted gradually to blow the parison. Continued movement of the hand-lever causes the nut 18 to make contact with the gland 16, the spring 15 is then compressed and the duct 13 opened fully. By this arrangement, the full pressure of the air is not admitted at once to the parison without effort on the part of the operator.
Patent GB-789891-A (GB)
Title: Improvements in and relating to wood working machines
IPC: B27D5/00
Filed: 1955-04-14
Abstract: 789,891. Planing wood. WHITE & SONS,Ltd., T., and QUERNS, W. J. July 3, 1956 [April 14, 1955], No. 10798/55. Class 145. A four-spindle woodworking machine having a pair of endless conveyers 1 and pressure bands 3 is adapted for trimming the protective lipping applied to the edges of a panel or door 2 by fitting to each spindle 4 or 5 an attachment 8 tiltable about the spindle and having a cutter 6 or 7 which trims the lipping to conform with the facing under the control of a roller 14 bearing on the facing. A driving gear 9 housed in the attachment is provided with a sleeve 11 for securing it to a spindle 4 or 5 in place of the normal cutter and it meshes with a driven gear 10 on the spindle of the cutter 6 or 7. The roller 14 is fitted on an adjustable bracket 13 and is of greater diameter than the cutters so that in commencing and finishing the trimming operation each cutting head is adjusted before the trimming operation commences and is held in adjusted position until the operation is complete. The rollers and cutters of each pair of attachments are urged towards the door by springs 24, 26 encircling sleeves 17, 21 which are screwed to eye bolts 18, 20 connected to a joint pin 19 on the lower attachment 8 and the spring pressure is adjustable by nuts 23, 25. Adjustment of the pairs of attachments about the shafts 4, 5 to suit different panel thicknesses is effected by adjusting the sleeve 17 with respect to the eye bolt 18 by means of a knurled knob 27 on the sleeve.
Patent GB-348815-A (GB)
Title: Improvements in or relating to electric motor controllers and the like
IPC: H01H19/62
Filed: 1930-04-04
Abstract: 348,815. Rocking-bar controllers ; actuation of switches. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, and MORRIS, F., 32, Mulgrave Avenue, Ashton-on-Ribble, Lancashire. April 4, 1930, No. 10801. [Classes 38 (iii) and 38 (v).] In a camshaft controller in which a cam 9 is moved clockwise to actuate a rocker 1 against a spring 5, to move a contact 3 into engagement with a fixed contact 4, the point of engagement of the rocker with the cam surface is situated on a collapsable arm 12 pivoted to the rocker at a point 13. This collapsable arm 12 is held by a spring 16, and the rocker spring 5, as an overset toggle against a stop 14 whilst the cam is moved to the " on " position, and collapsed by a detent 19 in the cam surface when the latter is returned towards the " off " position. In this way the contacts 3, 4 may be quickly separated by a slight movement of the cam towards the "off " position. If it is desired to effect the quick separation of the contacts when the cam is reversed from intermediate positions, the cam surface may have other suitably positioned detents. The toggle is reset by the spring 16 when the cam 9.is fully returned to the " off " position. In a modification the rocker is trailing relative to the " off '' movement of the cam, and the compression spring 16 is replaced by a tension spring.
Patent GB-569257-A (GB)
Title: Improvements in gun turrets
IPC: F41A27/18
Filed: 1942-05-01
Abstract: 569,257. Gun turrets. BENDIX AVIATION CORPORATION. May 1, 1942, No. 10808/43. Convention date, May 5, 1941. Divided out of 569,243. [Class 92 (i)] A gun turret, more particularly for the bottom surface of an aeroplane, is rotated for 'training and moved axially for extension and retraction by the rotation of a single member which engages the turret. In the form shown, a turret 102 for two guns 110 is carried by a column 124 having a screwed connection with a rotatabte nut member 120 carried by spider 114 attached to the underside of an aeroplane. The nut is rotated by worm gear from an electric motor 130 and serves to train the turret when the oolumn is connected with the nut by a key 144. When it is desired to extend or retract the turret, the key is moved from inside the aeroplane by hand 'gear (not shown) in order to disconnect the column from the nut and connect it with a non-rotatable sleeve 126 that is connected with the aircraft by a telescopic rod 128. This rod permits rise and fall of the sleeve with the column, but prevents relative rotation. The guns are elevated by worm and sector gear driven by an electric motor 172.
Patent GB-1095249-A (GB)
Title: Cloth pieces and garments of the trouser type made therefrom
IPC: A41D1/06
Filed: 1965-03-15
Abstract: 1,095,249. Garment parts. A. MIRSKY. May 10, 1966 [March 15, 1965], No. 10833/65. Heading A3V. A trouser leg part is cut from woven or. warp-knitted cloth on the cross i.e. with. its major axis at an angle of between 20 degrees and 70 degrees to the straight grain of the fabric. Suggested materials are barathea, gabardine and twill cloth, the major axis lying along the twill. The fabric may be stretchable along the warp and/or the weft. An arrangement for cutting out a multiplicity of trouser leg parts is, shown in Fig. 4.