baber/WOPTO huggingface dataset:
Patent GB-461604-A (GB)
Title: Process for stabilising lead tetraethyl and anti-knock mixtures containing same
IPC: C10L1/10
Filed: 1936-08-13
Abstract: Lead tetraethyl is stabilized by alkali metal fluorides by maintaining in suspension therein for a considerable time an excess of the finely dispersed fluoride, and removing the portion undissolved.  Suitably the mixture of fluoride and tetraethyl is shaken or stirred for several hours, but preferably is boiled under reduced pressure and with reflux.  Specification 414,581 is referred to.ALSO:Lead tetraethyl or anti-knock mixtures containing it are stabilized by alkali metal fluorides by maintaining in suspension therein for a considerable time an excess of the finely dispersed fluoride, and removing the portion undissolved.  Suitably the mixture of fluoride and tetraethyl is shaken or stirred for several hours, but preferably is boiled under reduced pressure and under reflux. For example, 1000 cc. of the anti-knock mixture composed of 6 : 3 : 1 of tetraethyl, dibromethylene, and monochlor-naphthalene is boiled for 1--2 hrs. at 40--50 DEG  C. and 10--15 mm. with a mixture of 5 gm. of sodium fluoride and 5 gm. of potassium fluoride, and filtered. Specification 414,581 is referred to.
Patent GB-383664-A (GB)
Title: Improvements relating to coils, particularly for loud speakers
IPC: H04R9/04
Filed: 1931-08-07
Abstract: The speech coil of a moving coil electroacoustic instrument, such as a loud-speaker, is formed of a flat strip conductor wound upon itself in a flat spiral, the width of the strip being parallel to the axis of the resulting coil and adjacent turns being insulated from one another by a thin film of an oxide of the metal of which the conductor is composed.  Thus, if the strip is of copper, the insulating film is formed by dipping the strip in nitric acid and subsequently heating it to produce a copper oxide surface, whilst, if it is of aluminium, the oxide can be formed by electrolysis using a solution of silicate of soda as the electrolyte.
Patent GB-531804-A (GB)
Title: Electrolyzers with external circulation of the electroyte, more particularly for the electrolysis of water
IPC: C25B9/17
Filed: 1939-08-02
Abstract: 531,804. Electrolytic cells. MASCHINENFABRIK OERLIKON. Aug. 2, 1939, No. 22459. Convention date, Aug. 6, 1938. [Class 41] The externally circulating electrolyte is returned to the cells 1 of an electrolyser, particularly for water, through capillary tubes 3 of glass or other insulating material connected by fluid-tight joints to the cells and to the distributing pipe 2, the liquid being forced through the tubes by means of a pump.
Patent GB-1196993-A (GB)
Title: Improvements in Refractory Nozzles
Inventor: JENKINS CONRAD GEOFFREY
IPC: B22D41/50
Filed: 1968-05-11
Abstract: 1,196,993. Moulding plastic substances. J. & J. DYSON Ltd. 28 April, 1968 [11 May, 1968], No. 22468/68. Heading B5A. [Also in Division F4] A composite refractory moulded nozzle for a ladle or tundish 4 comprises a main body 1 and a lining 5 of different materials which are co-moulded together at their interface 8 and which define a bore 6 flared at its upper end to provide a stopper seating 7. The lining may only form part of the bore surface, may be uniform in thickness or taper and may be backed by another lining. The nozzle is fired before use or each material is chemically bonded. Successive pen dies are used to mould the nozzle. Suitable refractory materials used may include fireclay, zircon, the oxides of magnesite, zirconia, and silicon; bonding agents include sodium silicate, inorganic polymers, phosphates and chromates. The nozzle body may be as described in Specification 1,194,488.
Patent GB-857832-A (GB)
Title: Improvements relating to bearings
Inventor: WALLIS BARNES NEVILLE
IPC: F16C33/20
Filed: 1958-07-14
Abstract: 857,832. Bearings. VICKERS - ARMSTRONG (AIRCRAFT) Ltd. June 2, 1959 [July 14, 1958], No. 22542/58. Class 12 (1). In a process of making a bearing of double curvature, strips of P.T.F.E.-faced metal are cut into segmental elements so shaped that when formed to the required double curvature the boundaries are " lines of latitude and longitude." The non-bearing side of the elements have two intersecting sets of closely-spaced lines incised thereon which also. follow the " lines of latitude and longitude." Each element is formed to shape by pressing or hammering into a female carrier, which also forms a female bearing when the elements are assembled therein and bonded thereto. Preferably the elements are ground and lapped on their incised faces prior to being assembled in the female bearing, and they may be mounted on a male support for this purpose. The incised lines relieve strain when the elements are being formed and, when assembled, the lateral edges of adjacent elements are in contact throughout their length. In a male bearing the elements are first held by the female carrier and bonded to the male support which is then withdrawn from the female carrier.
Patent GB-161999-A (GB)
Title: Improvements in or relating to carburetters for internal-combustion engines
IPC: F02M1/00
Filed: 1919-09-13
Abstract: 161,999. Brown, C., and Brown & Barlow, Ltd. Sept. 13, 1919. Closure members; making, processes for.-A bearing surface or seating for the throttle valve of a carburettor is produced by casting in a liner of drawn brass. sheel, or other tubing in the process of casting the body of the carburettor. The Figure shows a sliding throttle valve c in its lining or seating b around which the body a is cast. The Provisional Specification states that the utilization of drawn tube obviates the necessity of coring and machining the aperture in. which the throttle valve slides.
Patent GB-149638-A (GB)
Title: Improvements in aluminium alloys and method of making and treating the same
IPC: C22C21/12
Filed: 1920-07-29
Abstract: 149,638. Lavandeyra, A. de. Aug. 7, 1919, [Convention date]. Annealing. - Aluminium alloys containing small amounts of magnesium, copper, chromium, and manganese, are preferably worked and then heated to 480-560‹ C. for some time and quenched. The heat-treatment may be repeated between subsequent working operations.
Patent GB-459376-A (GB)
Title: Improvements relating to poles or masts
IPC: E04H12/24
Filed: 1935-08-13
Abstract: 459,376. Posts. FINER, H. J., Parkfield, Somerville Road, Sutton Coldfield. Aug. 13, 1935, No. 22752. [Class 20 (i)] Means for attaching cross-arms to poles or masts, more particularly tubular steel posts of the kind described in Specification 426,074, comprises a sheet-metal bracket A of substantially channel-shaped section, the base of which 11<c> is shaped to conform with the curved outer surface of the pole 9, and in the vertical side flanges 11<a> of which are formed slots for the reception of timber cross-arms or lengths of channel 12 in which timber cross-arms 10 are positioned, Fig. 1. The cross-arms and bracket are secured to the pole by bolts 13 which pass through registering holes in the cross-arm, channel, bracket, and pole, distance-pieces which enclose the bolts being inserted in the interior of the tube to prevent crushing of the walls when the securing nuts are tightened. In the modification shown in Fig. 5, tubular crossarms 17 are secured to the bracket by bolts 18, the heads of which bear against extended base portions 11f of the bracket. According to further modifications (not shown), the bracket may be welded to two-piece clamping members which encircle the post, or to complete rings which are slid into position over the narrow end of a tapered post.
Patent GB-1006676-A (GB)
Title: An actuating device for bowden wires
IPC: F16C1/12
Filed: 1962-06-14
Abstract: 1,006,676. Devices for actuating Bowden cables. MAX KAMMERER KABEIZUG - WERK G.m.b.H. June 14, 1962 [June 15, 1961], No. 22812/62. Heading B7E. A Bowden wire 6, Fig. 1, attached to a shoe 8 may be pulled by rotating a lever 3 about its pivot 2, the shoe being guided within an arcuate groove 9 in a body or bracket 1, and the wire 6 being retained laterally to prevent buckling by a recess 10 in the body and by the side of the lover 3. In a modification, Fig. 5, the wires are operated by rotating transparent plastic discs 15 which may be suitably marked to indicate position and may be illuminated by lights arranged either within the pivots 17 or externally of the discs.
Patent GB-437139-A (GB)
Title: Improvements in or connected with desiccating apparatus for instruments or parts of instruments
IPC: G02B27/00
Filed: 1934-08-07
Abstract: 437,139. Absorbing moisture in optical instruments. BARR & STROUD, Ltd., and FRENCH, J. W., Caxton Street, Anniesland, Glasgow. Aug. 7, 1934, No. 22820. [Class 34 (i)] An encased optical instrument is provided with a holder for desiccating substance, such as silica gel or calcium chloride, the holder being adapted to engage with the casing, and a wall of moisture-absorbing and conducting material is interposed between the desiccating substance and the air within the casing. In the construction shown in Fig. 1, the casing of one limb of a binocular is provided with desiccating substance 8 such as silica gel, which is confined between a transparent plate 6 and a wall 7 of moistureabsorbing and conducting material such as unglazed porcelain or earthenware, chemical filter paper, or blotting paper. The parts 6 and 7 are clamped between the casing A and the end plate 2. An opening 9 permits observation of the silica gel which contains a moisture-content indicator changing colour in combination with water. In a modification shown in Fig. 3, the silica gel is contained in a screwed holder B provided with a window 12. The inner end of the holder is closed by a wall 14 of moisture-absorbing and conducting material forming part of a capsule fitting the holder. A protecting wire gauze 15 may be provided. When the desiccating material is of such a type as calcium chloride, pieces of absorbent material 18, as shown in Fig 4, may be provided within the desiccating material to assist in absorbing surplus moisture. In a further modification the holder for the desiccating material is lined with absorbent material, and in another arrangement the desiccating material is divided by a partition of absorbent material which may be pierced with holes.
Patent GB-596647-A (GB)
Title: Electric connections to electric discharge tubes and like devices
IPC: H01J5/42
Filed: 1944-11-17
Abstract: 596,647. Jointing by stamping. STANDARD TELEPHONES & CABLES, Ltd. Nov. 17, 1944, No. 22859. Convention date, Dec. 22, 1943. [Classes 83 (ii) and 83 (iv)] [Also in Groups XXXVI and XL] Making parts of electric discharge apparatus.-A method of connecting two metal parts through a deformable membrane comprises placing a metal cup 10 shown in Fig. 2 with cup-shaped extensions 16 and 20, 16 having protuberances 18 and 20 having a re-entrant portion 22, within the circular hole 24 of the metal part 12, shown in Fig. 4, so that extension 20 extends through the hole and protuberances 18 fit into holes 26. The other metal part consists of wire 30 attached to metal disc 32 mounted on a base die 38 with spacing ring 40 to raise disc 32 from the top of the base as shown in Fig. 9. A disc of brazing material 42 is placed on the disc 32 and the whole inserted in the cupshaped member with the head in extension 16. A movable die 44 is then pressed on top of the extension 20 squeezing the excess metal therein outwardly and downwardly over the surface of part 12 which is at the same time squeezed against the bottom of extension 16, excess metal being forced between the disc 32 and the top of the die 38. The connection may then be heated at a suitable temperature to fuse the material 42 and braze the disc 32 to the inside of member 20.
Patent GB-916305-A (GB)
Title: Method and apparatus for reading characters
IPC: G06V30/224
Filed: 1961-06-26
Abstract: 916,305. Automatic character reading. OLIVETTI & C. S.p.A., ING. C. June 26, 1961 [July 1, 1960], No. 22965/61. Class 106 (1). Magnetic characters formed by seven vertical lines, Fig. 2, are sensed to derive a series of pulses the six intervals between which are of long or short duration and after amplification and re-shaping in units 2 and 4 are applied to a multivibrator 6 which in effect subtracts a fixed period from the interval signals producing pulses of corresponding duration which are each integrated in a condenser 10 until the next pulse arrives and the output applied to a threshold device 12. The long pulses will reach values in excess of the threshold value to produce a " 1." Otherwise a " 0 " is produced. These pulses are applied in common to gates 33-38. The pulses derived from the senser on emerging at 7 from multivibrator 6 are also applied to a counter 22. The outputs from the three stages are gated together in gates 26-32 to give successive timing pulses on seven leads P1-P7. The first six enter the successive binary bits into six storage stages 14-19 and the seventh which resets the store over line 39, and closes a gate 8, corresponds to the zero condition of the counter 22. The pulses at 7 pass through the gate 8 during sensing to the integrating capacitor 10. The counter is reset by a signal on lead 46 which is derived from a threshold device 45. Successive pulses from the senser are differentiated at 40 and used to make transistor 41 conduct so as to charge condenser 42. This discharges through resistor 43 at a steady rate, such that during the scanning of a character the voltage never drops below the threshold level of device 45. At the end of the character the condenser discharges and the threshold device gives a resetting signal. The circuit 47 prevents the counter starting on a spurious mark preceding a character as the interval will usually be large enough to allow condenser to discharge to the threshold level and reset the circuit.
Patent GB-531982-A (GB)
Title: Lightning protection devices for wireless transmitters
IPC: H01Q1/50
Filed: 1939-08-09
Abstract: 531,982. Valve circuits. McLEAN, F. C. Aug. 9, 1939, No. 23035. [ Class 40 (v)] A radio transmitter comprises a driving source D connected through a screen grid valve V and power stage T by way of a concentric feeder F to an aerial A. The positive terminal B of a high tension source is connected through resistances R 1 , R 2  to the screen grid of valve V and through a stopper circuit L 1 , L 2 , C, to the central conductor of feeder F. When a lightning flashover earths conductor F, voltage from source B is entirely dropped across R 1 , thus reducing the screen grid of V to earth potential and rendering the valve inoperative. The fault clears automatically when the surge ceases. The stopper circuit L 1 , L 2 , C, prevents the radiofrequency energy in the aerial system from reaching the screen grid of valve V.
Patent GB-1241572-A (GB)
Title: Weighing conveyor
Inventor: WALLACE TIMOTHY
IPC: G01G11/00
Filed: 1968-05-15
Abstract: 1,241,572. Weighing conveyers. AMF Inc. Aug.4, 1969 [May 15, 1968], No.23107/68. Heading G1W. A weighing conveyer comprising an endless belt 10 having a portion thereof in contact with a weighing probe 28 which is connected to a weight indicator is provided with a frame 25 pivotally mounted about an axis lying in the plane of the load supporting run of the belt, the frame 25 forming a support for the probe 28. As shown, the probe 28 comprises a roller in contact with the belt 10 and arranged at one end of the frame 25 which is connected by a tensile member 51 and stub axles 33, (34) Fig.2 2 (not shown), which the belt 10 is movably mounted. The tensile member 51 is provided with a strain gauge which constitutes the weight indicator. The chassis supports idler rollers 12, 15, 16, 17, 18, 23 and 24 and a drive roller 11 over which the belt is trained, the drive roller 11 being driven from a motor 41 through a reduction gear-box (42) Fig. 2 (not shown), by way of pulley belt arrangements (43-48). A tachometer may be provided which together with the weight indicator may be used to obtain the weight of material conveyed by the belt per unit of time. The total weight of material conveyed may also be obtained and regulation of the drive motor may be effected to control the rate of flow of material by the conveyer.
Patent GB-1466817-A (GB)
Title: Sensitive element for use in a piezooptic measuring converter
IPC: G01L1/26
Filed: 1975-05-27
Abstract: 1466817 Measuring force MOSKOV GOSUDARSTVEN UNIVERSITET IM MV  LOMONOSOVA 27 May 1975 23129/75 Heading G1W A force measuring device comprises a Piezooptic insert 1 disposed between and attached to the end-portions of two members 2, 3, the endportions being constructed as a plurality of pins. In the compression measuring device of Fig. 1 and 2, the pins are shaped as rectangular parallel pipes, and the cross-sectional area of the pins decreases away from the central axis. In the modified form of Fig. 3 in which a bending force is applied to the insert, the central pin of each member 11, 12 is constructed as a truncated pyramid. The pins are adhered to the members 2, 3 or 11, 12.
Patent GB-531999-A (GB)
Title: Improvements in and relating to sand-blast and like apparatus
IPC: B24C7/00
Filed: 1939-08-11
Abstract: 531,999. Sand blast. JACKMAN & CO., Ltd., J. W., and NEVILLE, F. W. Aug. 11, 1939, No. 23165. [Class 60] A sand-blast apparatus has a supply hopper 4 with a valve 5 opening into a pressure chamber 6 having an inclined floor 9 from which pass a pipe 10, with its upper end above the valve 5, and a pipe 11 leading from the lowest point of the chamber 6 to a valve casing 13 connected to a delivery hose 14 and open to an air reception chamber 7 in which moisture is condensed. Compressed air is admitted to the chamber 7 through a filter 16 by a reducing valve, not shown, and a valve 18 opened by a handle 19 which is adjustably connected to a sand control valve 12 which it opens to the desired extent when the valve 18 is fully opened. The valve 5 may also be connected to the handle 19 to open it only when the valves 12, 18 are closed. Condensed moisture is drained off by cocks 15.
Patent GB-883144-A (GB)
Title: Improvements in or relating to the making of chain links
IPC: B21L11/14
Filed: 1959-07-07
Abstract: 883,144. Making chains. MASSEY Ltd., B. & S., and CORNALL, W. July 7, 1959, No. 23219/59. Classes 83 (2) and 83 (4). A stud-link chain cable half-link is made by bending each end of a hot straight bar between dies 12, 13, Fig. 2, forging it between dies 10, 11, Fig. 3, to provide ears 17, trimming-off the flash and shearing the end surfaces in a press, bending to shape between dies 18, 19, Fig. 6, and coining to final shape whilst still hot in dies 31, 32, Fig. 9. The dies 12, 13 and the forging dies 10, 11 are provided on common upper and lower blocks. Bending die 18 has an adjustable stop 27 for positioning the workpiece; the latter is lifted out of the bottom die groove 21 by the top die 19 during its retraction. Two half-links after assembly on to their corresponding chain links are each closed and then electrically butt-welded together. Specification 813,656 is referred to.
Patent GB-372197-A (GB)
Title: Method and apparatus for making molten masses and slags become highly porous as theysolidify
IPC: C21B3/06
Filed: 1931-08-18
Abstract: 372,197. Treatment of slags. SCHOL, C. H., 131, Hauptstrasse, Allendorf, Dillkreis, Germany. Aug. 18, 1931, No. 23221. [Class 22.] Slags &c. are converted into highly porous masses by causing the molten mass to flow over a plane or convex surface over which a comparatively thin layer of water flows. Waterrepelling substances such as bitumen may be emulsified in the water. The product may be cooled and granulated, or it may be cast into moulds while still plastic to form blocks &c., which may have metallic reinforcements. The illustrated apparatus comprises a convex surface lover which water flows from the hollow body 3 while the molten slag is supplied from the pipe 2. Another apparatus comprises a slowly rotating horizontal cylinder, the slag and water being fed on to the uppermost part of the periphery.
Patent GB-1275029-A (GB)
Title: Apparatus for classifying and cleaning grain
Inventor: CAMAIL JEAN
IPC: B07B4/08
Filed: 1971-04-19
Abstract: 1275029 Sifting apparatus J CAMAIL 19 April 1971 [10 March 1970] 23224/71 Heading B2H An apparatus for classifying and cleaning grain comprises a container 45 accommodating a first inclined plane 8 onto which the grain to be sorted and cleaned is fed, a pivotable spreader 9 for distributing the grain in the form of a substantially uniform sheet over the width of the plane 8, a pouring ramp 14 for the classified and cleaned grain including a perforated portion 14', a chimney 17 opening into the container substantially opposite the perforated portion 14', a fan 18 within the chimney with its intake towards the perforated portion, a second inclined plane 24 the upper end of which is at substantially the same level as the perforated portion, and which is substantially opposite the intake of the fan 18, an inclined flap 28 the upper end of which is at substantially the same level with the upper end of the second inclined plane 24, and one or more vibrating grids 41, 42 disposed between the perforated portion 14' and the chimney 17, the grain and waste being classified by falling on the pouring ramp 14, the second inclined plane 24 and the inclined flap 28. The plane 24 and the flap 28 are pivotable about axes 26, 27 and are clamped in any desired position. The vibrating grids 41, 42 are detachably carried by a support 39 mounted on flexible suspension elements 40 and linked to an eccentric 38 belt-driven by a motor 35. The inclined plane 8 is fitted with a pivotable, perforated flap 12 upstream of the grids 41, 42. In operation, the grain to be classified is poured into a hopper 3 and falls past a regulating shutter 4 on to an inclined perforated wall 5. The large waste which does not pass through the perforations in the wall 5 is conveyed to a spout 6. The grain and the small waste pass down the inclined plane 8, through the flap 12 and on to the grid 41. The fan 18 sucks air through the perforated portion 14' and the grids 41, 42 so that light waste is aspirated through the chimney 17. The good grains pass through the grids 41, 42 and fall on to the inclined plane 14 and into a spout 15. The broken and small grains are conveyed along the grids 41, 42 by the airdraught and pass through the grids to fall into the passage between the plane 24 and flap 28 and thence to a spout 25. The waste which is lighter than the broken and small grains but heavier than the waste sucked through the chimney 17 is carried along by the air-draught for a longer time and falls into a spout 30 passing either through the grids 41, 42 or through a free space between the end of the support 39 and the lateral wall of the container.
Patent GB-158020-A (GB)
Title: Improvements in and relating to acetylene generators
IPC: C10H9/00
Filed: 1919-09-24
Abstract: 158,020. Darby, W., and Darby & Sons, Ltd. Sept. 24, 1919. Liquid raised up to sclid. - Air entrapped in the gas-bell 2 of an acetylene-generator of the diving-bell type escapes through a vent 8 extending downwardly from a point on the interior of the bell and below the level of the carbide holder 3, thence through an aperture 9 in the wall of the bell, and finally through a vent 10 extending upwardly on the outside of the bell to a point above the highest level attained by the water in water reservoir during ordinary use of the generator. The open end of the vent 8 is protected by a hood 11, and a plug 12 is provided for cleaning.
Patent GB-329576-A (GB)
Title: Improvements in or relating to reflux or non-return valves
IPC: F16K15/03
Filed: 1929-08-03
Abstract: 329,576. Blakeborough, R. A., and Brotherton, C. Aug. 3, 1929. Check hinged valves.-In a hinged single-flap reflux or non-return valve the ends of the shaft or hinge pin e are extended through the casing a and are carried in roller or ball bearings g housed in external lubricant chambers a with cover plates i. Felt packing washers h<1> are used. The valve door b may be made of light weight of steel plate, or of a gunmetal or like casting of concave section, and is pivotally carried by links d spaced on the shaft e by a distance piece e<1>.