baber/WOPTO huggingface dataset:
Patent GB-1000568-A (GB)
Title: Casing for a semi-conductor rectifier
IPC: H01L21/48
Filed: 1963-05-01
Abstract: 1,000,568. Rectifiers. BROWN BOVERI & CO. Ltd. May 1, 1963 [May 3, 1962], No. 17118/63. Heading H1K. A casing for a semiconductor rectifier consists of a ceramic tube 2 mounted on a metallic member 1, with a funnel-shaped ring 6 soldered to the inner wall of the tube and terminating in an annular part 66 which rests on a semi-conductor element 7; a further ring 4 supports a connection bolt 5 which is electrically connected to the element 7 through a flexible annular copper flex 8. The control electrode of the semi-conductor element is provided with a lead 9 which passes through a drilling in the bolt 5. The tube 2 may be of aluminium oxide.
Patent GB-476964-A (GB)
Title: Improvements in or relating to means for controlling the fuel supply to liquid piston internal combustion pumps
IPC: F02M51/00
Filed: 1936-06-19
Abstract: 476,964. Direct - explosion apparatus for raising liquids. CHRISTIE, S. P. June 19, 1936, No. 17159. [Class 102 (ii)] In an explosion pump or compressor, applicable also for the propulsion of vessels, the admission of fuel, or of fuel and air, is controlled by a photo-electric cell. As shown, air is supplied under pressure by a pipe 2, and gas under pressure by a pipe 3, to concentric tubes 4, 5, controlled by a float valve 7. The valverod 8 is operated by a piston 9, and carries a disc 11 which engages a stop 12 when the valve is open. The valve 7 is held closed by air admitted to the underside of the piston 9 from the pipe 2, through a reservoir 15 and a valve 13, when a solenoid 23 is energized. The upper side of the piston 9 is in communication with the vacuum in the exhaust pipe 18 through a pipe 17. When the circuit of the solenoid 23 is broken the valve is rotated by a spring 24 to put the two sides of the piston 9 into communication. Two switches 22, 26 are arranged in parallel in the circuit of the solenoid 23. The switch 22 is closed when the cell 21 is activated by the presence of burning gases, and the switch 26 is closed by the movement of liquid in the pump discharge pipe acting on a paddle 25. When the valve 7 opens the disc 11 closes a switch 34 in the circuit of a solenoid 33. Should the cell 21 be activated at the same time, the solenoid 33 is energized and withdraws a detent 32, thus permitting a valve 30 in the fuel pipe to close. In a selfinducing pump the solenoid 23 acts directly on the rod of the fuel valve. The paddle 25 may be replaced by a timing device operated by the suction in the exhaust pipe, as described in Specification 457,461. In this case the timing device and the photo-electric cell operate to open two switches arranged in series in the circuit of the solenoid 23, which operates to open the valve 7. Specification 338,165, [Class 102 (ii)], also is referred to.
Patent GB-1154980-A (GB)
Title: Polyamines
Inventor: POWERS EUGENE LEROY
IPC: C08G18/50
Filed: 1967-04-14
Abstract: 1,154,980. Diacid polyamines. MOBAY CHEMICAL CO. 14 April, 1967 [18 April, 1966], No. 17178/67. Heading C2C. [Also in Division C3] An aromatic amine having one benzene nucleus and one or two primary amine groups is condensed with formaldehyde or a precursor thereof, by mixing excess amine and formaldehyde (or precursor) in the presence of a mixed catalyst consisting of an acid having a pK a  at 25‹ C. of 1À5-5À0 with an amine to acid molar concentration from 100 : 1 to 200,000 : 1, and a neutral salt in an amount of 0À01-10% by weight based on the weight of the whole reaction mixture, and heating the mixture to a temperature of 150-350‹ C. for up to 15 hours provided that when the temperature is 200‹ C. or less the time is 1 hour or more and when the time is less than 1 hour the temperature is from 200-350‹ C. The aromatic amines used as starting materials may carry alkyl, alkoxy, halogen, hydroxy or nitro substituents on the ring. Examples are given of the condensation of (a) aniline, (b) o-toluidine, (c) o-chloroaniline and (d) o-methoxyaniline with formaldehyde. The products are chiefly the diamines but some polyamines are also formed.
Patent GB-778669-A (GB)
Title: Expanding plugs for connecting parts together
IPC: F16B15/04
Filed: 1954-06-11
Abstract: 778,669. Dowels; nails; screw-sockets. CARDINEAU, J. G. J. June 11, 1954 [July 16, 1953; April 30, 1954], No. 17252/54. Classes 89 (1) and 89 (2). An expanding plug 3, Fig. 2, has one end 4 tapered internally and slit to form lugs 6 which are spread when the plug is driven into a wooden member, e.g. a plywood seat-back. In this embodiment, the other end has a head 2, e.g. to engage a metal tube to which the back is fixed. In another embodiment, the plug has a tapped bore 10, Fig. 5, and is driven completely into the wooden member 8 which is fixed, e.g. to a tube 13, by a screw 11 engaging bore 10. The exterior of the tapped part may be polygonal. In a further embodiment, the plug has both ends 4, Fig. 7, tapered internally and split, and is provided with a collar 15, either integral therewith or formed as a washer with teeth engaging the slits at one end. The plug may be of square, hexagonal or octagonal cross-section.
Patent GB-460413-A (GB)
Title: Improvements in or relating to printing presses
IPC: B41F13/14
Filed: 1936-06-22
Abstract: 460,413. Printing-machines. KOPPE, A. T. June 22, 1936, No. 17314. [Class 100 (ii)] In an offset rotary printing-machine in which a zinc or like plate 16 is secured by clamps 17, 18 to the plate cylinder 11 which coacts with an offset cylinder 12 and impression cylinder 13, the plate cylinder 11 is adjustable relatively to its driving-shaft 15 to which it is connected by a clamp 55 operated by a screw 57, access to which is obtained through an aperture 11<a> in the outer wall of the cylinder 11. The ends of the shaft 15 are mounted in roller bearings 48, Fig. 2, held in place by a screwed cover plate 53 and ring 49 also screwed to the machine frame 10. The clamp 55 is pivoted at one end to a screw 56 which is connected to the cylinder 11 and also to a bearer ring 47 which controls the printing pressure. The hub portion of the clamp embraces the cylinder, and the adjusting- screw 57 passes through a plain aperture in one or two spaced ears 55<d> and engages a threaded aperture in the other ear, so that, when the screw is rotated, the ears are drawn together and the cylinder is firmly gripped to the shaft 15. By slackening the screw, circumferential adjustment of the cylinder relatively to its shaft can be effected. The cylinder 13 receives its sheets from a table 36 by means of a suction transfer cylinder 40 with which co-operates registering stops 37 and 38<a>, and the sheets are delivered by grippers 34 on a chain 35 passing around a cylinder 34.
Patent GB-999629-A (GB)
Title: New oxidation catalysts
Inventor: EYGEN CYRILLE VAN
IPC: B01J23/16
Filed: 1961-05-12
Abstract: Oxidation catalysts contain an oxygenated As anion in association with one or more of the elements Fe, Bi, Al, Sn, Zr, Cr, Co, Pb, Ni, Mn, Sb, V, Cn, B, Mo and W as cations and which after preparation are thereupon actuated by heating to a temperature between 200 DEG  and 500 DEG  C. in the presence of air, ammonia, steam or mixtures thereof. In examples, arsenates or arsenites of Fe, Bi, Sn and Mo are prepared.ALSO:Unsaturated nitriles, aldehydes and acids are prepared by oxidation of a -olefins in the presence of catalysts containing an oxygenated As anion in association with one or more elements Fe, Bi, Al, Sn, Zr, Cr, Co, Pb, Ni, Mu, Sb, V, Cu, B, Mo and W as cations which are subjected to an activated pretreatment.  The synthesis of acrolein from propylene is described with CH3.CHO as by-product. Also aminoxidation of propylene to acrylonitrile is described, with CH3CN as by-product. Examples are given.ALSO:Oxidation catalysts contain an oxygenated.  As anion in association with one or more of the elements Fe, Bi, Al, Sn, Zr, Cr, Co, Pb, Ni, Mn, Sb, V, Cu, B, Mo and W as cations and which after preparation are thereupon activated by heating to 200-500  DEG C. in air, ammonia, steam or mixtures thereof.  The catalysts may be supported on pumice, colloidal SiO2, Al2O3 or carborundum.  Conventional regeneration by oxidation is described.
Patent GB-663175-A (GB)
Title: Improvements in or relating to step and repeat photographic copying machines
IPC: G03B27/06
Filed: 1948-06-30
Abstract: 663,175. Photographic step - and - repeat copying apparatus. KILMINSTER, A. R. June 15, 1949 [June 30, 1948], No. 17524/48. Class 98 (ii). The apparatus includes a control device for moving a carrier unit automatically to successive predetermined positions, comprising an electric motor to effect traversing of the carrier unit, operation of the motor being effected by a control drum rotatable synchronously therewith and having an electrically conductive peripheral surface, in association with an electrical control unit electrically connected to an electrical contact movable in timed relation with the drum in a path parallel with the axis thereof, the control drum being adapted to have secured round its periphery a strip of insulating material in which apertures are formed in predetermined spaced relation for determining the intervals at which contact is effected between the contact and the peripheral surface of the drum. As shown, Fig. 1; a bed 7 for a sensitized plate is movable longitudinally in a fixed frame 8 by a worm screw 9 acting on a captive nut on the bed, and a negative-carrying unit 10 together with a lamp unit 12 is movable in guides 11 above the bed 7 at right-angles thereto by means of a worm screw 13. Unit 10 is also movable vertically by a worm screw 15 into contact with the bed 7. Screws 9, 13, 15 are rotatable by electric motors or by hand wheels 19, 20, 21 respectively. Screws 9, 13, each carry a control drum 22 (Fig. 2), freely mounted on an extension shaft 22a of the screw on which the hand wheel 19 is fixed. A pin 24 threaded into the hand wheel locks it to the drum. The electric motor drives shaft 22a through a worm gear 33, 34, and drum 22 carries a pinion 25 meshing with a pinion 26 fast with a screw 27 journalled in a frame member 28. Rotation of screw 27 moves a carriage 29 along it which has a spring-loaded arm 30 with a roller 31 urged into electrical contact with the conducting surface of drum 22. This surface is covered by an insulating strip of paper on which roller 31 traces a spiral path. Apertures are made in the strip so that, at predetermined moments, roller 31 makes contact with the drum surface through the apertures, closing the circuit of a relay interrupting the motor supply. As the motor overshoots the relay does not act immediately, but a quick-acting relay is operated which reverses the motor and operates a clutch to connect a governor to the motor which returns slowly until contact is again made through the aperture. By means of the drums and a relay system, the bed 7 and unit 10 are movable to a number of positions, and at each position the negative is brought down on the sensitized plate and the lamp switched on, thus printing several rows of images. The relays may also operate a counter indicating the number of images printed, and a bell which rings on completion of a row.
Patent GB-255451-A (GB)
Title: Improvements in or relating to high pressure steam plants with multi-stage prime movers
IPC: F01K7/26
Filed: 1926-07-13
Abstract: 255,451. Siemens - Schuchertwerke Ges, July 14, 1925, [Convention date]. Liquid-fuel furnaces.-In a high pressure steam plant with multi-stage prime mover and a steam regenerative accumulator between the stages a float or other device reduces the supply of heat to the boiler furnace, when the accumulator is fully charged, as by throttling a burner valve 16. Upon a fall in steam temperature and an increase in load the accumulator supplies the additional steam required and the furnace firing is automatically increased.
Patent GB-421474-A (GB)
Title: Improvements relating to starting switch operating mechanisms for motor vehicle engines
IPC: B60K26/00
Filed: 1933-06-20
Abstract: 421,474. Starting prime movers; actuation of switches. LUCAS, Ltd., J., and LUCAS, O., Great King Street, Birming- ham. June 20, 1933, No. 17536. [Class 38 (iv)] [See also Group XXXVII] In an electric starting system for internal-combustion engines the starting switch is operated by a member moved by the acceleration pedal, means being provided which, when the engine has started, permits a spring to move the member into a position in which it cannot actuate the switch. The accelerator pedal a, Fig. 1, controls the throttle lever c through a lost motion connection l, m and also operates a rotary lever k operating a shaft 3, Fig. 2, which is axially urged by a spring 11 so that a clutch member 5 on a disc secured to the shaft 3 is normally in engagement with a corresponding member w on a disc v secured to a transmission member t which is connected to a brush s through a plate x, rod y, spring 2 and a projection 3, Fig. 3, on the brush s so that rotation of the shaft 3 produces rotation of the brush s which is formed with a lever r and roller q for operating the spring contacts o, p and n of the starter motor switch. A spring 6 opposes the action of the spring 11 which acts through a thrust member 7, but is not sufficiently strong to overcome it and a connection 10 to the suction side of the intake manifold of the internal-combustion engine applies suction to one side of a diaphragm 9 to which the thrust member 7 is connected so that when the engine starts the combined action of suction and the spring 6 separates the members 4, v and permits the switch o, n to open by virtue of the resilience of the spring contact p. Thereafter, actuation of the pedal a does not operate the switch unless the engine stalls and the members 4, v are once more engaged. The lost motion connection permits hand adjustment of the throttle to be effected independently of the switch.
Patent GB-1147398-A (GB)
Title: Device for stepwise displacement of workpieces, tools and suchlike
Inventor: BOUCHERIE GERARD BENONI
IPC: B23Q35/02
Filed: 1967-04-17
Abstract: 1,147,398. Variable-ratio gears. G. B. BOUCHERIE. 17 April, 1967 [20 Oct., 1966], No. 17536/67. Heading F2D. [Also in Division B3] A shaft is driven in the steps (to similarly drive a workpiece or tool) by two oppositely directed ratchet wheels 2, 3 selectively driven by pawls 12, 13 the throw of which is varied under the control of punched tape. The pawls 12, 13 are pivoted on levers 4, 5 which are pivoted about the axis 1 of the shaft. Connecting arms 20, 21 are pivoted at 18, 19 to the pawls and have cross pieces 22, 23 with holes 24-33 which, in the neutral position of the operating mechanism are aligned with pins 42-51 slidable in levers 34, 35 which are oscillated by cams. Plates 65, 66, 68 are secured together and slidably mounted in the frame of the machine. Plate 68 has pins fast therewith, and plate 65 has pins 70-79 slidably mounted therein and biased towards the pins 47-51 by springs 81. A punched tape 54 is positioned between the plate 65 and levers 34, 35 and, on the plates being shifted upwardly (as shown in Fig. 2) prevents all save a selected one of the pins 70-79 from engaging the pins of the lever 34 or 35. The selected pin passes through a hole in the tape and engages the corresponding pin in the lever 34, 35 and shifts it to engage the corresponding hole in the cross-piece 22 or 23. Rocking of the lever 34 or 35 then causes the shaft to be stepped in the appropriate direction by 1 to 4 steps according as holes 24-28 or 29-33 are engaged by the corresponding pins. When the levers return to their neutral positions, the plates 65, 66, 68 are shifted downwardly, and a pin on the plate 68 returns the selected pin to its neutral position. The tape is then shifted to its next position ready for another cycle.
Patent GB-517319-A (GB)
Title: Improved process for the production of baked products from yeast-raised doughs
IPC: A21D2/16
Filed: 1938-06-13
Abstract: 517,319. Baked cereal food preparations. PROCTER & GAMBLE CO. June 13, 1938, No. 17561. Convention date, Feb. 3. [Class 49] In the preparation of baked goods from yeast-raised doughs having a flour base, a fatty shortening consisting of, or containing, mono- or di-glycerides of'higher fatty acids and in substantially liquid and free-flowing form is incorporated into the yeast-containing dough in sufficient quantity to produce a tenderizing effect in the baked product without substantially affecting its volume. Preferably the mono- or di-glycerides are present in quantity sufficient to make the amount of the excess of combined glycerine over that required to form the triglyceride of the combined fatty acids of all the fat in the mass equal to at least .1 per cent. of the weight of the flour or to at least .5 per cent. of the weight of all the fat. Specifications 425,980 and 425,981, [both in Group I], are referred to. Reference has been directed by the Comptroller to Specifications 425,963, and 425,980.
Patent GB-375538-A (GB)
Title: Loud speaker
IPC: H04R9/04
Filed: 1931-06-17
Abstract: 375,538. Loud-speakers. MAGNAVOX CO., 155, East Ohio Street, Chicago, U.S.A. June 17, 1931, No. 17562. Convention date, Feb. 20. [Class 40 (iv).] Relates to loud-speakers of the kind having a conical diaphragm, with an attached actuating coil which is located in an annular air gap formed between a central magnet pole and a surrounding pole. According to the invention, the rim of the diaphragm 16 is clamped between a plate 21 and a support 19 engaging and extending outwardly from the magnet structure, and the plate 21 is engaged by a member such as 26, Fig. 1, which extends through the apex of the diaphragm and cooperates with the inner magnet pole 11 to hold the parts together. In the construction shown in Fig. 1, the member 26 is an extension of the magnet pole itself, and is engaged by a nut 25 and a non-magnetic washer 27 on the outer side of the plate 21. A modification is described, Fig. 4 (not shown), in which instead of the extension 26 of the magnet pole, a brass &c. bolt passes through the plate 21 and through the apex of the diaphragm, and screws into a hole in the pole 11. A further modification of this feature is shown in Fig. 5, wherein a shorter extension 26 of the pole 11 is provided, and is engaged by an internally threaded bolt 36, preferably of brass, passing through the plate 21. The annular polepiece 13 carries a non-magnetic spacing ring 14, which serves to centre the air gap correctly. A flexible coilcentring device 18, Fig. 1, is mounted on a member 17, secured to the polepiece 13. Figs. 5 and 6 show a modified form of coil-centring device 38 consisting of a ring 42 engaging the diaphragm and coil 15, and flexible arms 43 which are attached to a support 37. This is adjustably secured to the annular polepiece 13 by screws 39. Ears 44 on the ring 42 carry terminals to which leads for the coil are connected. The pot member 10 of the magnet, in the construction shown in Fig. 5, is formed by pressing, and has flanges 31 between which the pot is cut away to provide for circulation of air to cool the coil 12. In a further modification, the coil-centring device is mounted directly upon the diaphragm housing 19. The rim of the housing 19 has a flange 28, Fig. 1, which receives a vibration damping packing 29, adapted to engage with a baffle or cabinet wall. Alternatively, the flange 28 may be turned outwardly to overlap and frame the baffle hole. In this case, the member 21 may be ornamented and if desired provided with a silk backing.
Patent GB-372979-A (GB)
Title: Improvements in curtain supporting devices
IPC: A47H13/10
Filed: 1931-06-17
Abstract: 372,979. Suspending curtains. SMITH & DAVIS, Ltd. and SMITH, H. F.,' Beacon Works, Hampton Street, Birming- ham. June 17, 1931, No. 17601. [Class 52 (v).] A curtain runner consists of a U-shaped sheet-metal frame 1 carrying two or four rollers 4 each provided with a spindle 5 rotatably engaging in one of the limbs of the frame. The length of each roller, with its spindle, is such that it cannot become detached from the frame. The upper ends of the frame may be extended horizontally to project beyond the rollers to form buffers 10 which prevent the contact of adjacent runners. The frame may be of shallow channel cross section. An inclined portion 6 may be provided between the roller 4 and its spindle 5.
Patent GB-200814-A (GB)
IPC: G03C5/10
Filed: 1923-07-06
Abstract: 200,814. Polygraphische Ges. July 14, 1922, [Convention date]. Reproducing opaque originals; plates, films, and papers.-To produce negatives having strong contrasts from opaque originals by exposure through the sensitive surface, which is placed in contact with the original, a colour filter adapted to absorb rays of short wave lengths is combined with the sensitive plate, film or paper. A yellow filter may be used. The filter may be applied to the outer surface of the support as a separate layer, and/or between the support and the emulsion, and/or incorporated in the emulsion itself. The latter may consist of an emulsion of silver halides, such for instance as chloride or bromide, or chloride, bromide, and iodide of silver.
Patent GB-901833-A (GB)
Title: Process for the preparation of metallographic samples
IPC: B24B37/00
Filed: 1961-05-15
Abstract: 901,833. Grinding and polishing metallographic samples. MERMILLOD, C. May 15, 1961 [May 19, 1960], No. 17661/61. Class 60. Metallographic samples are prepared by a preliminary operation for establishing a plane surface followed by a finishing operation for polishing the plane surface, diamond paste being used as the abrasive in the preliminary operation. The preliminary operation is effected by a rotary tool formed by sintering powdered metal e.g. iron, copper or alloys, the pores in at least the working surface being loaded with diamond grains mixed with oil or wax. The grains may be 35-55 microns when the sample is of hard material or 8-18 microns in other cases. For preparing a sample of tungsten carbide, a tool made from iron powder is used, first with a paste having diamond grains of 35-55 microns and subsequently with a paste having diamond grains of 8-18 microns. For preparing a sample of hardened steel, a tool made from iron powder loaded with a paste having diamond grains of 20-40 microns is used and subsequently a tool made from nickel carbonyl powder loaded with a paste having diamond grains of 6-12 microns is used. The finishing operation is effected using felt tissues loaded first with diamond grains of 4-8 microns and subsequently with smaller grains.
Patent GB-1106228-A (GB)
Title: Improvements in or relating to method of manufacturing electrodes for fuel cells, and electrodes thus obtained
IPC: H01M4/86
Filed: 1965-04-27
Abstract: At least one electrode of a fuel cell having a liquid electrolyte comprises on the electrolyte side a porous layer wholly consisting of a refractory metal oxide e.g. magnesia alumina, or zirconia and on the gas side a metal or alloy layer e.g. nickel, silver, gold, palladium or a silver alloy, the layers being separated by intermediate layers comprising a mixture of the refractory material and the metal or alloy, the proportion of metal or metal alloy in said intermediate layers increasing as the intermediate layers approach the metal layer.  The electrode may be formed by simultaneously spraying the refractory oxide and metal on to a mandrel using either two blowpipes or a single blowpipe.  Initially only one of the constituents is sprayed on to the mandrel, thereafter the ratios of the constituents is progressively varied until at the end of the process only the other constituent is sprayed. Alternatively the electrode may be formed by spraying a mandrel with a layer of one constituent followed by spraying with a sublayer e.g. one pass of blowpipe of the other constituent. A further layer of the first constituent is then applied followed by a slightly thicker sublayer of the second.  The resulting electrode comprises alternate strata of metal and refractory oxide, the thickness of the metal strata increasing from the refractory layer to the metal layer and the thickness of the strata of refractory oxide increasing from the metal to the refractory layer.