baber/WOPTO huggingface dataset:
Patent GB-1527203-A (GB)
Title: Inverter power supply
IPC: H02M7/5383
Filed: 1977-01-27
Abstract: 1527203 Inverters STANDARD TELEPHONES & CABLES Ltd 27 Jan 1977 03344/77 Heading H2F In a transistorized inverter to control the switching transistors TB1, TR2 connected to the ends of a centre tapped primary winding of a load transformer TF1 a control transformer TF2 is provided having oppositely poled secondary windings 1, 2, connected to the bases of respective transistors and fed by a primary winding 3 which carries control pulses for the transistors, there also being on the control transformer a feedback winding 4, 5 associated with each transistor and connected in series with that transistor and the primary winding of the load transformer, and a sixth winding 6 which is periodically short circuited to switch off that one of the switching transistors which is conducting at the time. The control pulses, of alternate polarity, for the transistors are switched and applied to the control transformer primary via two transistors TB5, TR6, and a further control transistor TR4 applies the short circuit across the sixth winding between these control pulses. If a fault occurs in that the control voltage fails or is too low a relay RLA operates and short circuits the sixth winding 6 so that the inverter will not operate.
Patent GB-1210843-A (GB)
Title: Optical instrument
IPC: C03C3/118
Filed: 1968-01-22
Abstract: 1,210,843. Optical apparatus. CARL-ZEISSSTIFTUNG [trading as JENAER GLASWERK SCHOTT & GEN]. Jan.22, 1968 [Jan.23, 1967], No.3345/68. Heading G2J. [Also in Division C1] An optical instrument includes at least one optical shaped glass element the optical path length of which is largely independent of temperature, and is a lens, prism, cover disc or window, and consists of a borosilicate glass having the following percentage by weight composition: SiO 2  30-75, B 2 O 3 : 5-35, alkali metal oxide: 0-25, alkali metal fluoride: 5-35, Al 2 O 3 : 0-25 with additional fluoride. The glass element can be used in a spacecraft optical system, Fig.1 SP denotes a Schmidt plate, L, a lens, F the focal point of the system and M the mirror. SP and/or L is/are made of the said borosilicate glass. In a lens system for high aciuty aerial photography, Fig.2, the photographic or optical window W and/or the lens L is/are made of the borosilicate glass.
Patent GB-590581-A (GB)
Title: Improvement in electromagnetic vibratory interrupters
IPC: H01H50/76
Filed: 1945-02-09
Abstract: 590,581. Electromagnetic interrupters. PLESSEY CO., Ltd. (Mallory & Co., Inc., P. R.). Feb. 9, 1945, No. 3350. [Class 38 (v)] In an electromagnetic vibratory interrupter, the armature 13 is carried on the lower end 42 of a rigid plate 35 (Fig. 6) which is fixed, by screws passing through holes 49 and 46, to two spring strips 48 (Fig. 8) fixed at 47 to a contactcarrying stack. The stack consists of a series of spacing members which clamp between them two pairs of springs carrying the fixed contacts 31, 33. The centre part 44 of the plate 35 passes through a hole in the stack and the upper end of the plate carries contacts 38, 39 which co-operate with the fixed contacts. The interrupter may be mounted in a casing which provides electrical shielding, a felt ring at the top and a rubber ring round the operating coil affording a resilient mounting.
Patent GB-333235-A (GB)
Title: Improvements in means for consuming smoke in boiler furnaces
IPC: F23L7/00
Filed: 1929-02-01
Abstract: 333,235. Scott, J. H., Scott, F., and Scott, G. Feb. 1, 1929. Air, supplying ; air supply, heating; baffles.- Heated air, with or without steam, is supplied to boiler furnaces by a pipe e extending to the back of the boiler and thence to a position behind the bridge c, the outlet end e directing the air in a rearward direction. In the furnace illustrated, the inlet end of the pipe e is at the front, where it is provided with a steam jet, the pipe extending through one of the side flues to the back of the boiler, and thence forwardly. '1'he outlet end e<2> may be flared horizontally, or provided with a horizontal cross pipe having rearwardly-directed perforations. A baffle g may be arranged as shown, and may be perforated; in the form shown in Fig. 8, the perforations g<4> are inclined upwardly and rearwardly, and the top portion of the baffles is curved forwardly at g<2>. Fig. 9 shows a modified form of baffle, with in. clined slots g<5> and inclined recesses j in the top edge. Specification 284,485 is referred to. Reference has been directed by the Comptroller to Specifications 9758/89, 3823/99, 16832/02, 14732/05, 313,241 and 321,601.
Patent GB-1587101-A (GB)
Title: Pipe lining
IPC: F16L58/10
Filed: 1978-01-27
Abstract: The lining is carried out by means of bent-off plates. Each plate (4) has T-shaped anchoring attachments (8) which project on the plate outer surface (16), run in the longitudinal direction of the pipe, are all of the same height and just about reach the reinforcement. Each plate also has webs which are arranged on the plate longitudinal edges and are parallel to the anchoring attachments (8). Each web has a groove in its interior, on its inner surface neighbouring the adjoining anchoring attachment (8) and directly above the plate (4). The side surface, directed away from the plate (4), of the said groove runs parallel to the plate outer surface (16). A cross-sectionally U-shaped coupling piece (18) extending in the longitudinal direction of the pipe has clamping strips on the inner sides of its leg ends. If the coupling piece (18) is mounted on the webs of adjoining plates, the clamping strips then latch in the grooves of the webs and connect the plates (4) to one another. <IMAGE>
Patent GB-837746-A (GB)
Title: Novel article of manufacture
Inventor: STAHMANN JOHN A
IPC: B29C43/14
Filed: 1958-02-03
Abstract: A decorated moulded article is made from a thermosetting resin in a press consisting of a male and female die providing a cavity, the press being opened during the process to allow the escape of gasses; a pre-shaped three-dimensional carrier bearing the decoration is then applied to the partly moulded article, the press re-closed and the moulding process completed.  The carrier consists of a finely divided material bonded with a synthetic resin.  In an example, a suspension of alpha-cellulose fibres is sprayed on to a porous surface and suction applied to the underside of the surface to form a felted layer, which is then sprayed with a resinous binding composition; the so-formed carrier is then decorated e.g. by hand, by printing, by rubber stamps or by silk-screening and applied to a partly moulded object.  The type of fibre and resin may be selected so that the impregnated fibres become transparent and only the decoration is visible on the surface of the moulded object.
Patent GB-494085-A (GB)
Title: An improved process for the treatment of rice
IPC: A23L7/196
Filed: 1937-02-05
Abstract: 494,085. Treating rice. HUZENLAUB, E. G., and ROGERS, J. H. Feb. 5, 1937, Nos. 3505 and 10056. [Class 58] Paddy or dehusked rice is placed in a pressure vessel 1 that can rotate in bearings 7 and steam is blown into the vessel 1 through a valve 30 and a hollow trunnion 6a. Prior to the steam being admitted, the air in the vessel may be evacuated by opening a vacuum connection 24 and a quantity of water may be supplied to wet the grain through a cock 23. As the steam is admitted, any air displaced is evacuated through a valve 3. While the vessel is slowly rotated the steam pressure is allowed to rise to ten pounds per square inch for a period of about three minutes, after which the steam supply is shut off and the valve 3 opened. Water is again supplied to the rice through the cock 23 and then steam supplied as before ; valve 3 is again opened to let the vapour blow off and condensed and wash water is allowed to escape from the chamber. The treatment is again repeated, and then, after the interior of the vessel has, if desired, been again subjected to vacuum, the contents are discharged on to a belt 32 that carries them to a drying machine or sun floor.
Patent GB-1083530-A (GB)
Title: Improvements in or relating to an inverter
IPC: H02M7/515
Filed: 1966-01-26
Abstract: 1,083,530. Inverting. M. ETTER. Jan. 26, 1966 [Feb. 23, 1965], No. 3581/66. Heading H2F. An inverter comprises a number of units A, B, C, connected in parallel across a D.C. source 1, each unit comprising main controlled rectifiers 5, 6 and auxiliary controlled rectifiers 4, 7 so arranged that firing one of the auxiliary rectifiers extinguishes the main rectifier in series with it. As described, the inverter provides a three-phase supply for an electric motor, the rectifiers being sequentially fired by a ring counter 9 driving bi-stable circuits 10, 11, 12, Fig. 2 (not shown). At the first pulse in a cycle output a is energized to supply a triggering pulse to rectifiers 4, 5 in unit A and transistor 13 is switched to its conducting state to reverse the polarity of the D.C. supply to the units A, B, C. With a reactive load rectifier 4 starts to conduct until the potential at R changes sign, after which rectifier 5 conducts. When an output appears at d circuit 10 switches to its other state, applying a triggering potential to rectifiers 6, 7 and rectifier 7 conducts to extinguish rectifier 5. In modifications the transistor 13 is replaced by a diode and the extinguishing pulse is derived from a series resonant circuit (27, 28), Fig. 3 (not shown), or a capacitor (40) connected to a bridge of controlled rectifiers (41 . . . 44), Fig. 5 (not shown), which are controlled by a further trigger circuit (47). Inductors 3 may be provided to prevent short-circuiting of the extinguishing pulse should one of the auxiliary rectifiers 4, 7 be conducting when the bi-stable circuit changes its state. The auxiliary rectifiers may be of a lower rating than the main ones, and be provided with series and shunt diodes (31 . . . 34), Fig. 4 (not shown).
Patent GB-564751-A (GB)
Title: Improvements in or relating to conveyors
IPC: B65G15/10
Filed: 1943-03-08
Abstract: 564,751. Conveyer belts. BAINBRIDGE, F., and HUWOOD MINING MACHINERY, Ltd. March 8, 1943, No. 3709. [Class 78 (i)] In conveyers of the type comprising an endless flexible member looped about driving and tension rollers or drums and built up of a series of ropes extending longitudinally of the conveyer and held spaced-apart at intervals by cross-bars, the bottom run only of the member acts as the conveying traverse and moves in a trough extending between the end units and built up of sections. The cross-bars 37 do not extend across the full width of the flexible member 1, but each joins only a few adjacent ropes and they may be spaced in a series of V formations. These short bars may be bored longitudinally to receive the ropes, and be gripped thereto by cross-pins, by brazing, or by pressure deforming the bars around the ropes. In another form, each bar 37 is built up of two superposed parts bolted together. The member 1 is developed from a plurality of sections hinged together, and these hinges may be pairs extending in line half across the member, each rope being capped at its end and pinned to one flap 38 of a hinge. The slack of the material conveyed falls between the ropes on to the trough and is dragged along by the cross-bars 37, while the larger pieces lie across the ropes and are carried thereby. The end rollers may be covered with rubber &c.
Patent GB-545307-A (GB)
Title: Apparatus for sorting screws, studs and such like according to dimension
IPC: B07C5/06
Filed: 1941-03-19
Abstract: 545,307. Gauging apparatus. PARKIN, J. F. March 19, 1941, No. 3747. [Class 106 (ii)] Screws &c. are sorted according to length by being placed on the spokes c<SP>2</SP> of a wheel c rotated below a top plate d from which depend pins g arranged in a spiral, so that when a screw engages the pin it is knocked off the spoke to fall into a receptacle b below. The wheel rotates on a journal a<SP>9</SP>, and friction washer a<SP>11</SP> provided on a crown d secured to a cylindrical hollow pillar a<SP>3</SP> secured to the base a. The spokes are at an angle of about 30 degrees to the horizontal and are lined with wood strips shaped to receive the screw with the head abutting a flange. The wheel has an extended rim c<SP>1</SP> by which it may be turned. The top plate d is secured to the crown a<SP>7</SP> and is joined to the base a by three brackets e and is provided with a segmental gap in front of which the operator stands taking a screw and placing it on a guide which assists in aligning it with the spoke. The pins g are covered with extended rubber sleeves and are easily removable for adjustment and replacement. The receptacles b are removable and wedge-shaped and fit into the compartments formed by dividing plates as.
Patent GB-993081-A (GB)
Title: Improvements in or relating to litter bins
Inventor: WALLER PAUL HENRY
IPC: G09F11/26
Filed: 1963-01-30
Abstract: 993,081. Refuse bins. ALPHAG UNIVERSAL SCALING MACHINE CO. Ltd. Jan. 30, 1963, No. 3759/63. Heading A4A. [Also in Division G5] A litter bin (Fig. 1) is mounted on a lamp post 2 and comprises a pivotable lid 9 of cylindrical shape having an aperture 8 and pivoted by handles 10. Litter is placed in lid 9 which is then pivoted about points 11 to deposit litter in a wire basket (Fig. 2, not shown) in the body 1. The lid returns to an upright position by gravity or spring loading. A side door, not shown, in body 1 allows removal of the basket. Operation of the lid 9 moves an endless display band exhibited at 3 behind a window. Fig. 4 shows a bin 41 with a hinged lid 45, whose opening closes electrical contacts to initiate an advertising display in unit 43.
Patent GB-774230-A (GB)
Title: Apparatus for aluminium coating elongated metal bodies such as metal wire or strip
IPC: C23C2/36
Filed: 1955-02-09
Abstract: 774,230. Aluminising metals by dipping. WHITFIELD, M. G. Feb. 9, 1955, No- 3803/55. Class 82(2) Strip, &c. and other elongated bodies are coated with aluminium by dipping in a molten bath and passed out through a tube 15 up which a stream of the aluminium is directed by the induction heating means 13a. This breaks up the oxide layer at the exit of the strip and yields an even coating. Fingers projecting inwardly of the periphery of the mouth of tube 15 may be provided to increase the turbulence of the flow. In a modification (not shown) two streams of uprising metal are utilized and directed one each side of the strip. Fingers arranged at an angle to the metal stream may be provided to cause an additional component to the flow, carrying oxide &c. away from the strip. A similar arrangement may be provided at the entry of the strip in the bath.
Patent GB-1063268-A (GB)
Title: Method for preparing ketones containing a cyclohexylic nucleus
IPC: C07C49/00
Filed: 1963-10-09
Abstract: 1,063,268. Preparation of dicyclohexyl ketones and cyclohexyl phenyl ketones. SNIA VISCOSA SOCIETA' NATIONALE INDUSTRIA APPLICAZIONI VISCOSA S.p.A. Oct. 9, 1963 [Oct. 11, 1962], No. 39861/63. Heading C2C. In a method of preparing dicyclohexyl ketone and cyclohexylphenyl ketone by the conversion of hexahydro benzoic acid or of an equimolecular mixture of hexahydro benzoic acid with benzoic acid at temperatures between 280‹ and 450‹ C. in the presence of metal oxides, in particular manganese oxide, dissolved in the corresponding acids, the reaction of the acids with metal oxide on the one hand and the conversion of the acids into the ketones on the other hand are executed in two successive stages to increase the activity of the catalyst and to increase the conversion ratio. The reaction of the acids with the metal oxide and their conversion whilst being done in two successive stages may be carried out in the same or separate reaction vessels. Examples are given of preparations described with reference to suitable apparatus.
Patent GB-900537-A (GB)
Title: Improvements in the envelopes for electric capacitors and methods of making such envelopes
IPC: H01G2/10
Filed: 1959-02-04
Abstract: 900,537. Capacitors. MANUFACTURE INDEPENDANTE DE CONSTRUCTION RADIO. Feb. 4, 1959 [Feb. 6, 1958; May 21, 1958; July 18, 1958], No. 3994/59. Class 37. A capacitor 1, Fig. 4, is provided with a casing consisting of layers of metal foil, e.g. aluminium, 10a, 10b, alternating with non- metallic layers 11a, 11b of film preferably of a substance such as polystyrol which is capable of shrinking when heated. A strip of metal foil narrower than the film is applied to the film and the composite strip is wound round the capacitor 1. After the sealing plugs 8 have been inserted heat treatment causes the protruding turns 11a, 11b to join together and by shrinking to grip the seals 8. In an alternative arrangement, Fig. 6, the metal foil 10 extends only a little more than one turn round the capacitor 1, while the non-metallic film comprises three turns 6a wound round the capacitor 1 and three outer turns 6b over the metal foil. The metal foil may be provided with printed patterns or other marks visible through the transparent outer layer of film.
Patent GB-233283-A (GB)
Title: Improvements in or relating to means for driving speedindicators, taximeters and other measuring and registering apparatus
IPC: F16C1/08
Filed: 1925-02-12
Abstract: 233,283. Middleton, P. C. Feb. 12, 1925. Transmission mechanism.-In apparatus for driving taximeters, speed indicators &c. comprising a worm-drive totally enclosed within but removable from without the vehicle, gear box as described in Specification 161,085, the connections are made so that the drive can be disconnected or removed only after a seal between the flexible driving shaft casing and the indicating instrument has been broken. The shaft 5 on which is mounted the gear 4 meshing with a worm 3 on the main shaft 1 is connected to the nipple 14 on the end of the flexible shaft 9 by a tongue 7. The connection is housed in a sleeve 13 which is secured to a boss 22 on the gear-box wall 2 by bolts 20 and nuts 19. These nuts 19 and the pin 11 which prevents withdrawal of the nipple 14, are rendered inaccessible by a cover 18. To the flexible casing 15 of the shaft 9 is sweated a sleeve 16 which is screwed over the part 17 until it abuts against the cover 18. The casing 15 is then sealed at the other end to the instrument.
Patent GB-1471842-A (GB)
Title: Process for the production of foam plastics
IPC: B29C33/00
Filed: 1975-01-30
Abstract: 1471842 Polyurethane foams BAYER AG 30 Jan 1975 [30 Jan 1974] 4049/75 Heading C3R Polyurethane foams are prepared in a closed mould, there being incorporated in the foamforming reaction mixture a mould release agent which is the reaction product of 0À8 to 4 mol of ricinoleic acid and 1 mol of a fatty acid which contains more than 8 carbon atoms. The mould release agent is most preferably a reaction product of 0À9 to 2 mol of ricinoleic acid and 1 mol of oleic acid, soya oil fatty acid or tall oil fatty acid. Conventional mould release agents may also be incorporated in the reaction mixture. The foams may comprise a compact outer skin.
Patent GB-641084-A (GB)
Title: Improvements in velocity modulation devices for producing ultra-high frequency oscillations
IPC: H01J25/12
Filed: 1947-02-12
Abstract: 641,084. Velocity-modulated tubes. PHILIPS LAMPS, Ltd. Feb. 12, 1947, No. 4061. Convention date, Feb. 25, 1944. [Class 39 (i)] In a velocity modulation device for producing ultra-high-frequency oscillations, in which the electron beam passes axially of a coaxial line cavity resonator 6 through a straight cylindrical drift tube 7 extending between buncher and catcher gaps 4, 5, the inner hollow conductor 10 of the resonator, is arched outwardly with respect to the longitudinal direction of the drift space, in such manner that its length, determining the length of the feed-back path between the catcher and buncher gaps, measured along the outside, in every axial cross-section is appreciably longer than the axial length of the drift space. It may, for example be approximately three times the length of the drift space. The Specification as open to inspection under Sect. 91, states that the drift tube 7 may be absent. This subject-matter does not appear in the Specification as accepted.
Patent GB-469963-A (GB)
Title: Improvements in or relating to belt lacing machines
IPC: F16G3/00
Filed: 1936-02-11
Abstract: 469,963. Attaching belt fasteners. BRIDGEWATER J. W. Feb. 11, 1936, No. 4065. [Class 80 (i)] Relates to a machine for inserting spiral coils of wire into the ends of belts and pressing the coils flat to provide loops through which a connecting pin can be inserted. The machine is of the type in which three spirally-grooved rollers a<1>, a<2>, a<3> are geared together, and in which the rotation of the rollers causes a relatively short spiral needle to be rotatably traversed along the space between them, followed by the wire coil, so as first to pierce a spaced series of perforations in the belt and then to insert the wire coil therethrough, the belt being held between a fixed pressure block l and a movable pressing head n, which subsequently flattens the wire. According to the invention, the rollers a<1>, a<2>, a<3> are mounted between rigid cheeks i forming part of a rigid frame which incorporates the fixed block l, and the head n slides in guides k at the ends of the frame under the action of a screw q. As shown, the head n has projecting pins o engaging slots p inclined slightly to the vertical in the end plates k. The space between the rollers a<2>, a<3> is adjustable by a handle d acting through screw c nut f, links g on levers h carrying the eccentric bearings a<4>, a<5> of the rollers. The mechanism is mounted on a short base j so as to be portable.
Patent GB-914509-A (GB)
Title: Matrix type cathode
IPC: H01J1/14
Filed: 1959-02-06
Abstract: 914,509. Cathode materials &c. processing. EITEL-McCULLOUGH Inc. Feb. 6, 1959 [March 12, 1958], No. 4267/59. Drawings to Specification. Class 39 (1). A cathode comprises a backing member in the form of a solid plate of nickel including zirconium with or without magnesium and/or silicon, or an emissive coating comprising a mixture of 20 to 40 parts by weight of bariumstrontium-calcium carbonate with 80 to 60 parts of nickel powder and 0.1 to 2 parts of zirconium hydride or zirconium metal. The backing member may also contain traces of Cu, Fe and Mu. The preferred emissive coating comprises a mixture of 70 parts by weight of vacuum-melt nickel powder, 30 parts of carbonates prepared by coprecipitation in a weight ratio of 6 parts barium to 3 parts strontium and 1 part calcium, and 1 part of zirconium hydride. The emissive mixture is distributed uniformly over the surface of the backing member, to which a layer of nickel particles may have been sintered to provide a rough surface, in the amount of at least 100 mgs/sq. cm. The coating is then subjected to a pressure of 20 to 35 tons/sq. inch to compress the mixture to a thickness of 0.016 to 0.024 inches and a density of 40 to 50% of a solid of the same composition. The cathode, which may be in the form of a concave disc, is then mounted in an electron tube, e.g. a velocitymodulated beam tube, which is baked out at 400‹ C. and then the cathode is heated to 600‹ C. to complete the outgassing thereof. The cathode is formed by increasing its temperature to 1050‹ C. and finally activated in an ageing step in which it is heated to 925‹ C. for 20 hours. Such cathodes may be successfully operated for more than 5000 hours at 825‹C.