baber/WOPTO huggingface dataset:
Patent GB-1452729-A (GB)
Title: Process for the removal of phenols from aqueous streams
IPC: C07C37/72
Filed: 1975-06-24
Abstract: 1452729 Extraction of phenols from aqueous streams E I DU PONT DE NEMOURS & CO 24 June 1975 [1 July 1974] 26768/75 Heading C2C A method for the extraction of phenol or nitrophenol(s) or mixtures thereof from aqueous streams in which they are contained comprises the sequential steps of (a) intimately mixing nitrobenzene solvent with the phenolic stream, the pH of the water contained in the intimate admixture being no greater than 5 and the weight ratio of nitrobenzene to phenolic compounds being no less than the saturation ratio (as hereinafter defined); and (b) separating the intimate admixture into a raffinate phase comprising water substantially free of phenol(s) and an extract phase comprising phenolic compounds dissolved in nitrobenzene, the temperature of the extraction being between 5‹ and 75‹ C. By the term "Saturation Ratio" is meant the ratio by weight of solvent to phenol(s) contained in a saturated solution of phenol(s) in the solvent at the extraction temperature.
Patent GB-311170-A (GB)
Title: Improvements in sewing machine rufflers
IPC: D05B35/08
Filed: 1928-09-19
Abstract: 311,170. Fairweather, H. G. C., (Greist Manufacturing Co.). Sept. 19, 1928. S e w i n g - machines; ruffling - attachments, comprising the usual lever, ruffling blade, ratchet arrangement and pawl, are provided with two notched wheels and a fixed and adjustable pawl, to enable a ruffle to be made at every stitch, or at equal intervals of a predetermined number of stitches. In the example described, a ruffle may be made at every stitch or every six or twelve stitches. To make a ruffle at every six stitches, the wheels 23, 24 are adjusted to bring a stud 23<c> into the notch 24<c> so that the deep notches 23<a>, 24<a> are in register. The reciprocation of the needle bar oscillates the lever 15 and also the carrier 27 causing the pawl 29 to move forward at each stitch. The periphery of the wheel 23 holds the pawl out of engagement with the notches 24b on the wheel 24, but when the notches 23a come opposite the pawl, it can enter the notches 24<a> and engage a shoulder 16<b> on the lever 16 to advance the ruffling blade 17<a>. To make a ruffle every twelve stitches, the stud 23<c> is located in one of the notches 24<a>. To set the device for making a ruffle at every stitch, the square pawl holders 28 is turned through 90‹, turning the pawl 29 out of the path of the wheels and allowing a fixed pawl 26, which was before held up out of the path of the wheels, to engage the notches 24b, 24a at each oscillation of the lever 15. The pawl carrier 27 can be turned out of contact with the wheels to put the ruffling device out of action. The stroke of the ruffling blade is adjusted by the screw 18 and finger 16<a>.
Patent GB-963256-A (GB)
Title: Semiconductor devices
IPC: H01L23/29
Filed: 1960-08-03
Abstract: 963,256. Semi-conductor devices. RADIO CORPORATION OF AMERICA. Aug. 3, 1960 [Aug. 11, 1959], No. 26916/60. Heading H1K. In a semi-conductor device comprising a semi-conductor wafer with a mass projecting from one of its major faces, the mesa is surrounded by an insulating coating and is topped by a conductive film which also extends over the surrounding coating. A tunnel diode of this type is made by flooding one face of an N- type germanium wafer, doped with 2.8 x 10<SP>19</SP> atoms/c.c. of arsenic to give it a resistivity in the range 0.0005-0.005 ohm cm., with a melt consisting of 30 parts indium, 0.3 parts gallium and 4 parts germanium, maintained at 515 C. After cooling to 425 C. to form a recrystallized P layer containing 9X 10<SP>19</SP> acceptor atoms/c.c., the excess melt is removed and the wafer etched to the form shown in Fig. 1c. The epoxy resin " Araldite " (Registered Trade Mark) is applied over and around the mesas 13 and when it has hardened is lapped until its surface is flush with the tops of the mesas. Indium is then vacuum evaporated through a mask to form contact layers 17 (Fig. le). The matrix of diodes thus formed may be used as such or subdivided into a plurality of separate diodes. Such a diode may be soldered between nickel ribbons 19 (Fig. 1g) held apart by ceramic spacers 20 and the intervening spaces filled with epoxy resin. Nickel, copper, tin, lead, or silver-loaded plastics may be used instead of indium for contact layers 17. A number of alternative materials for the insulating layer are also specified. A conventional diode made by a similar method but using less heavily doped semi-conductor material is completed by alloying or soldering pellets of tin-lead and indium-lead to the contact layer and opposite wafer of the wafer (in this ease P-type) respectively. The transistor shown in Fig. 3 is made by diffusing impurities into opposite faces of a wafer to form layers of opposite conductivity type, removing one layer to leave only mesa 35, attaching ring base 38 and insulating coating 36 and depositing electrode films 37, 37<SP>1</SP>, 39 through a mask. A diode-triode, Fig. 4, and unipolar transistor, Fig. 5, may be formed using similar techniques. In all cases silicon, silicongermanium alloys or phosphides, arsenides and antimonides of indium, gallium and aluminium may be used instead of germanium.
Patent GB-462751-A (GB)
Title: Improvements in or relating to devices for sharpening safety razor blades
IPC: B24D15/10
Filed: 1935-09-30
Abstract: 462,751. Stropping razors. CORBISHLEY, H. Sept. 30, 1935, No. 26988. [Class 60] A holder for hand-stropping single-edged safety razor blades comprises a flattened tubular member H provided with a slitted portion at one end having the edges E turned in to receive a blade B, and with a handle H<1> at the other end. The slitted portion is so dimensioned as to present the blade to the strop at the correct angle. According to the Provisional Specification, lugs, projections, or springs may be fitted in the tubular member to engage recesses in a blade.
Patent GB-606972-A (GB)
Title: Improvements in the moulding of keys for typewriters or calculating machines from thermoplastic material, having inlays of different colour from the surface of the articles
IPC: B29C45/16
Filed: 1945-10-16
Abstract: 606,972. Moulding keys for typewriters &c. LANDIS & GYR SOC. ANON. Oct. 16, 1945, No. 27048. Convention date, Oct. 28, 1944. [Class 87(ii)] Keys of thermoplastic material, for typewriters or calculating machines, having inlays of a different colour from the body of the keys are moulded in a set of moulds comprising one or two base members and two interchangeable upper members, a central feed passage and radiating feed channels of one of the upper members being larger than those of the other, so that after the body of the keys have been moulded, using the upper member with the smaller feed channels and a base member, and then replacing it by the other upper members, the inlay material may be injected between the old sprue and the walls of the larger feed channels of the second upper member. As shown in Figs. 1 and 3, two base members 1, 11 are used. Plastic material is injected through the feed passage 9 and radiating channels 10 into the mould cavities 3. Interchangeable members 6 having ribs 7 to form hollows in the keys for the inlays are positioned above the cavities 3. When the material has set, the upper member 2 is removed, the moulding remaining in the member 1 due to the tapering stud 8a formed in a recess 8. The moulding is then removed by an injector 4, the stud being partly deformed, and it is then placed in the second base member 11 which is identical with the member 1 except for the recess 12, which is slightly larger than the recess 8, and for feed channels 18 which connect the recess 12 with the feed channels in a second upper member 13. The member 13 has a passage 9a and channels 14 larger than the corresponding passage 9 and channels 10. The inlay material is injected through the channels formed between the old sprue 5a and the channels 14 and is distributed by ribs 16 on members 17 into a moulding space 15 which includes the hollows formed by the ribs 7. At the same time material passes through the channels 18 to form a new stud around the old stud 8a, to allow the upper member 13 to be broken away from the moulding. After ejection by means of an ejector 4a, the surfaces of the keys are turned to remove the surplus inlay material. Specification 566,518 is referred to.
Patent GB-519308-A (GB)
Title: Improvements in stabilizing means for vehicles
IPC: B60G21/04
Filed: 1938-09-16
Abstract: 519,308. Spring suspensions. COOK, J. F. Sept. 16, 1938, Nos. 27105/38 and 19747/39. [Class 108 (ii)] Separate weight-carrying and stabilizing springs are provided, the latter being coupled together transversely or longitudinally to counteract canting or tilting..The front end of the chassis 2, 2a, 3 is pivoted at 10 to a transverse semi-elliptical spring 7.which transmits the weight at 8, 8a to the levers 13, 13a which transmit it to the axle 5. The chassis is stabilized by means of a torsion bar 11 rotatably mounted on the chassis members 2, 2a and rigidly secured to the levers 13, 13a. The levers are connected at intermediate points by links 16, 17 to the ends of the spring 7. If the chassis moves relatively to the axle, the parallel component is controlled only by the spring 7, and the structure 11, 13, 13a rocks idly in the bearings 12, 12a. If an angular movement, causes abnormal upward movement of one axle end 6, the lever 13 tends to turn about the point 16 and additional downward pressure is exerted on the chassis at 12. Torque is also applied to the rod 11 tending to move the lever 13a. The movement is resisted by the axle end 6a and downward pressure is applied to the chassis at 12a. As the rod 11 is elastic, the lever 13a may have a smaller movement than the lever 13. In a modification, the levers 13, 13a may also be made elastic by the embodiment of leaf springs. The stabilizing member in Fig. 5 comprises a leaf spring 21 connected to the axle 5 by shackles 22, and to the weight-carrying spring 7 by clamps 24, 24a, and to the chassis structure at 25, 25a. The chassis structure comprises a stiff spring 26 rigidly fixed at its centre. The end portions a, b of the member 21 correspond to the levers 13, 13a. Upward movement of the shackle 22 produces a downward force on the chassis at 25 and at the same time, through portion 26x, on the chassis at 25a. An arrangement similar to that of Fig. 5 may be applied to the longitudinal stabilizing of a vehicle. In an arrangement, Figs 6 and 7, for controlling both transverse and longitudinal tilting, two longitudinal weightcarrying springs 7, 7a are provided, each having a leaf spring stabilizing member 21, 21a attached at 8, 8a. Torsion bars 29, integral with plates 30, are secured to the springs 21, 21a, and are pivoted at 31 to stiff springs 33 carried by the chassis. The springs 7, 7a are attached at their centres to a cross beam 34, rigid or formed as a leaf spring.. The device acts as a combination of Fig. 3 and Fig. 5, the latter being applied longitudinally.
Patent GB-506246-A (GB)
Title: Improvements in or relating to screw propellers
IPC: B64C11/34
Filed: 1938-09-17
Abstract: 506,246. Screw propellers. RUPP, A. Sept. 17, 1938, Nos. 27155 and 27156. Convention dates, Sept. 17, 1937 and Sept. 24, 1937. [Clasa 114] In screw propellers wherein the blades are adapted to move outwardly with accompanying pitch adjustment under the action of centrifugal force, such outward movement is resisted by arms pivotally supported on the hub and having resilient restraint means at their outer ends. The blade 1 is adapted under centrifugal force to move out of a hub 2 and by reason of an inclined slot 9 and pin 8 arrangement also changes pitch. The blade has a flange 3 against which abuts the inner end 4 of a lever 6 which is pivoted to the hub at 5. The hub also has an axial extension 10 and between it and the lever 6 are springs 7. One spring only may be used connecting the arms and the extension 10 may be omitted. So that the blades may be limited in motion if a lever 6 breaks, the root 14 of one blade is extended and screw-threaded to engage an extension 15 on the other blade which is internally screw-threaded. In another construction headed pins 19 carried by the central part of the hub are disposed within a space in a blade root which is enclosed by a screwed flange 20. In this case the pivot points 5 are carried by a frame 17 on the hub extension 18 and the lever 6 is forked at its inner end to provide two arms 4 to bear on the outside flange 3. In a modification the pivot points are carried on the opposite side of the boss and a roller intermediate along the length of the lever itself bears against the flange 3 of the blade. In a further modification the blade roots carry blocks 26 which are connected by levers 23 with a disc 24 pivoted on an axle 5. This axle also carries the restraining lever 6, there being only one such lever for both blades and the weight of the lever may be balanced by a weight 28. The central part of the disc 24 may be formed with a straight through opening in line with the propeller shaft; the lever 7 being then disposed outside the hub.
Patent GB-503764-A (GB)
Title: Improvements in or relating to adjustable mounting devices for use, for example, in supporting lighting fittings or the like
IPC: F21V21/28
Filed: 1937-10-07
Abstract: 503,764. Pivot adjustments. GENERAL ELECTRIC CO., Ltd., and HUBBOLD, S. Oct. 7, 1937, No. 27240. [Class 65 (ii)] [Also in Groups XIV and XI] An adjustable pivoted support such as a pendant or bracket comprises a member 16 pivoted at 12 and provided with a rigid extension 14 adapted to engage a non-resilient plate member 8, the pivot 12 and the plate member being spring-biassed towards one another so that a balancing force is exerted at the end of the extension to maintain the pivoted member in any desired position. An inverted domeshaped member 1 fixed by a flange 2 to the ceiling &c. has bolted within it a plate 5 with a tubular extension 6 in which slides a rod 7 extending from the engagement plate 8 urged downwardly by a coil spring 9 surrounding the extension 6. The end 10 of the dome-shaped member carries a screw-threaded member 13 forming a bearing for a universal joint comprising a ball 12 with a tubular extension 14 terminating in a ball end adapted to engage the spring-pressed plate 8. The ball 12 has an extension 15 threaded to receive the lamp &c. carrying tube 16. By screwing the member 13 into or out of the dome, the compression of the spring may be adjusted. A lip 17 on the periphery of the plate 8 limits the movement of the support. A series of indentations or annular grooves may be formed in the plate 8 positively to position the ball end of the extension 14. Wiring bushes are provided at 18, 19.
Patent GB-389882-A (GB)
Title: Improvements relating to electrical circuit breakers
IPC: H01H33/75
Filed: 1931-10-01
Abstract: 389,882. Oil-break switches. BRITISH ELECTRICAL & ALLIED INDUSTRIES RESEARCH ASSOCIATION, WHITNEY, W. B., and WEDMORE, E. B., 36, Kingsway, London. Oct. 1, 1931, No. 27384. Addition to 366,998. [Class 38 (v).] Arc-rupturing devices. -The invention described in the parent Specification is modified by arranging for the arc to commence at, or to be urged to, the side of the contacts nearest the lateral outlets. In Fig. 1, one 1a of the four segments forming the fixed contact is extended downwards so that the movable contact 14, in opening circuit, breaks contact with that finger last and in the neighbourhood of outlets 2 formed by superposed baffles 8, 9. Any tendency of the movable contact to move prematurely out of contact with the segment 1a is resisted by a pivoted flap 15 which is pressed against the contact 14 by a spring 17 and perforated so as to lighten it. Alternatively it may be arranged as a partition separating the two contacts, as shown dotted in Fig. 1, and moving in a rectangular well in the baffle structure 8, 9. In this case the are gases below the partition escape through the lower outlets 2, which may be narrower than the upper outlets to deal with smaller currents, or, when no such outlets are provided, they may escape round the pivot 16 and form a crossblast acting in the arc above the partition. In another form, Fig. 4, the short segments 1 of the fixed contact are shrouded at their lower ends with insulating material 19, that is provided with walls 20 to prevent the arc contacting with the conducting parts 21, 22. No flap is necessary with this arrangement. In another form, Fig. 6 (not shown), in which a moving blade moves between two fixed blades, the tips of the blades are inclined so that the final point of separation is adjacent the outlets. In Fig. 9 an inverted U-shaped strap 28 of magnetic material is placed round a lateral extension 27 of the contact 1a, which extends to the point of minimum cross section of the outlet 2. The arc current sets up a field which is concentrated in the strap 28 and holds the arc in the position 29 shown. Contacts.-The arcing tips of the contacts may be of tungsten, platinum, or tungsten carbide.
Patent GB-1358832-A (GB)
Title: Bending metal sheets
IPC: B21D5/02
Filed: 1971-06-11
Abstract: 1358832 Angular bending RONEO VICKERS Ltd and R A DUFF 11 June 1971 [11 March 1970] 27408/71 Divided out of 1358831 Heading B3E The subject matter of this Specification is substantially the same as that described in Specification 1,358,831, but the claims are concerned with the unit for supporting a first part of a thin metal sheet while forming a bend between the first part and a second part of the sheet.
Patent GB-667421-A (GB)
Title: Improvements in air compressors
IPC: F04B39/06
Filed: 1949-10-25
Abstract: 667,421. Compressors. DE VILBISS CO. Oct. 25, 1949, No. 27421/49. Class 8 (i) A single- or two-stage air compressor comprises a pair of cylinders 4, 5 with their axes forming a V, a flywheel 15 with vanes directing cooling air between the cylinders, a finned air intake manifold 17 and a compressed air manifold 35 both extending between and connected to both the cylinders and both lying in the path of the cooling air from the flywheel. The manifold 17 carries a central intake 27 fitted with an air silencer and filter and is connected to the inlets of the cylinders 4, 5 by extensions 23, 19. The manifold 35 is S-shaped and is connected to the cylinder outlets by elbows 33, 34, and is mounted below the manifold 17. The faces of the flange connections from the extensions 23, 19 and elbows 33, 34 are parallel to the axes of the respective cylinders and lie alongside each other. For single stage operation air is discharged from a connection 37 in the manifold 35. For two stage operation the extension 23 is blocked and the inlet and outlet valves of cylinder 4 are reversed. Air is discharged from a connection on cylinder 4, blocked during single stage operation.
Patent GB-266778-A (GB)
Title: Improvements in or connected with sparking plugs
IPC: H01T13/46
Filed: 1925-11-02
Abstract: 266,778. Buckingham, E. J. Nov. 2, 1925. Sparking-plugs. - An intermediate electrode is provided in the form of a ring f seated against insulation d in the tapered end of plug casing. Both ring and insulation may project slightly beyond the end of the casing, and the outer end g of the ring may be expanded to prevent its being dislodged from its conical seating. The insulation d is continued within the plug casing up to the main seating therein.
Patent GB-244724-A (GB)
Title: Process for the production of artificial stones
IPC: C04B35/16
Filed: 1925-11-03
Abstract: Artificial forsterite (magnesium olivine) is obtained by fusing a less basic magnesium silicate, e.g. serpentine, or silica itself with magnesium sulphate, or with materials such as magnesium carbonate and ammonium sulphate which react to produce magnesium sulphate.  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the production of silicates of other divalent and trivalent metals by corresponding methods.  This subject-matter does not appear in the Specification as accepted.
Patent GB-674771-A (GB)
Title: Improvements in or relating to plate valves
IPC: F16K3/10
Filed: 1949-10-31
Abstract: 674,771. Valve accessories. BROSIUS CO., Inc., E. E. Oct. 31, 1949 [Aug. 3, 1949], No. 27831/49. Class 135. In a rotary plate valve the valve plate 12 is movable transversely from a pocket 10 to a position between fixed and movable sealing rings 24, 27 respectively and then held in position by pressure fluid supplied to an annular bellows 26, thus closing the conduit 2. On expansion of the bellows, springs 48 mounted on circumferentially spaced rods 40 secured to a ring plate 31 welded to the ring 27 are compressed and, on release of the pressure fluid from the bellows, free the ring 27 from the plate 12. Sealing rings 33 made of strands of woven metal, e.g. metal known under the Registered Trade Mark "Monel", are fitted between the ring 27 and a conduit portion 32 to prevent solid particles from the conduit interfering with the operation of the bellows. On removal of spacer bushes 55 from beneath the heads of bolts 54 co-operating with sleeves 51 surrounding the springs 48, the bolts may be screwed inwards to compress the springs to clamp the plate 12 between the rings 24, 27 should the fluid pressure fail.
Patent GB-1397449-A (GB)
Title: Method of refining iron metls containing chromium
IPC: C21C5/00
Filed: 1972-06-14
Abstract: 1397449 Refining Fe-Cr melts STORA KOPPARBERGS BERGSLAGS AB 14 June 1972 [16 June 1971] 27908/72 Heading C7D A process for removing C from Cr-containing iron melts comprises subjecting a substantially slag-free melt to vigorous stirring whilst blowing O 2  on to the surface. The melt may be stirred by means of a vibratory ladle and/or by passing Ar in through the bottom of the melt. In an example, Si is initially removed as slag from pig iron in a vibratory ladle, after which O 2  is blown on to the surface and Ar in through the bottom of the melt. This reduces the C content from 4% to 1À6%. The blowing is continued with the ladle stationary and a C content of 0À03% was achieved. The melt may be of high Cr-steel or stainless steel.
Patent GB-824235-A (GB)
Title: Improvements in or relating to telephone handsets
Inventor: MELLORS WALTER GEORGE
IPC: H04M1/76
Filed: 1956-09-12
Abstract: 824,235. Sets. GENERAL ELECTRIC CO. Ltd. Sept. 12, 1957 [Sept. 12, 1956], No. 27928/56. Class 40 (4). [Also in Group XXXVI] A transistor amplifier, a transmitter and a receiver are accommodated in a telephone handset, the components of the amplifier being mounted on an annular member access to which can be had by removing the transmitter from the casing. A cord 11 comprises three leads M, MR, R, the first of which connects to a pin 12 engaging a socket 13 on the transmitter 3. The other terminal of the transmitter is provided by its case which makes electrical contact with three resilient ears 16 on a ring 15 carried by an insulating annular member 8. The member 8 also carries all the components of a transistor amplifier except a variable resistor 17 which is mounted with its control 10 in the receiver end of the set. Access to the amplifier is had by removing the cover-plate 7 and the transmitter 3. Current is supplied from the exchange over leads M, MR for the operation of the transmitter, the potential being stabilized by a thermistor 19 and resistors 20, 21. The current supply is also applied to a rectifier bridge of germanium diodes 22- 25 to feed a transistor amplifier. Incoming signals over leads R, MR are amplified and fed to the receiver 18. Alternatively the signals from the transmitter may be amplified before being sent to line. Specification 824,236 is referred to.