baber/WOPTO huggingface dataset:
Patent GB-398364-A (GB)
Title: Improvements in or relating to static frequency changing systems
IPC: H02M5/00
Filed: 1932-11-11
Abstract: 398,364. Frequency changing ; phase changing. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, and RISSIK, H., 33, Burton Manor Road, Stafford. Nov. 11, 1932, No. 31937. [Class 38 (ii).] In a frequency-changing system of the type in which a pair of multiphase grid-controlled rectifiers are employed to supply respectively opposite half waves of current to the circuit of lower frequency, the grids are energized with impulses at the higher frequency supplied by a peaky wave form alternator and the stator of the latter is oscillated at the lower frequency so as to cause a sinusoidal variation of the instants at which the anodes are made conductive thus causing the current of lower frequency to be of sinusoidal wave form as indicated at S in Fig. 2 even though the several phases 1 .. 6 of the higher frequency system are of equal amplitude. Fig. 3 indicates how one of a pair of such rectifiers are controlled, the grid circuits including a source of negative bias and the stator winding 9<1> of a peaky wave form alternator. The field system 10 of the latter is driven synchronously with the higher frequency system 1 by a motor 14, and the stator is oscillated through a pin-and-slot mechanism 16 by a synchronous motor 17 energized by a circuit 18 operating at the lower frequency. The application of the invention to a number of known circuit arrangements fo this type of frequency changer (1) for interconnecting systems of a different number of phases and (2) for interconnecting polyphase systems of the same number of phases is described with reference to other Figures (not shown).
Patent GB-1571574-A (GB)
Title: Chairs for use in boats or road vehicles
IPC: F16C11/12
Filed: 1977-07-29
Abstract: Pivotable adjustment mechanism is provided for the connection of two mutually moveable members. Such members can be a seat portion and a base support portion of a chair, two cooperating, shaft forming members of an apparatus, a machine, etc. The adjustment mechanism includes two concentric rings suspended according to the cardan principle. The two rings each have a torsion bar disposed along a diameter of and securely fastened to its ring for adjustment of the latter, the two torsion bars being arranged at right angles to each other. A first member is fastened to the outer ring which is suspended by rotatably mounting the ends of its torsion bar in brackets secured to the inner ring which is axially displaced of the outer ring. The inner ring is suspended by rotatably mounting the ends of its torsion bar in a bracket secured to a second member of the chair, apparatus, machine, etc. The torsion bars of the outer ring are secured at their centers against rotation relative to the inner ring and the bracket secured to said second member respectively. This provides a more robust construction with the use of torsion springs which provides a longer lifetime for the springs and less noise in the springs during use.
Patent GB-898447-A (GB)
Title: Circuits for suppression of image frequencies in superheaterodyne receivers
Inventor: KOUBA JIRI
IPC: H03D7/18
Filed: 1958-10-08
Abstract: 898,447. Filters. TESLA, NARODNI PODNIK. Oct. 8, 1958, No. 32115/58. Class 40(8). A circuit for suppression of image frequencies in superheterodyne receivers having tuned and aperiodical input circuits connected b y variable and non-variable condensers has a tuning condenser C L  provided with a simultaneously tunable coupling member forming a T- network comprising three condensers C 1 , C 2 , C 3 , two, C 2  and C 1 , being connected in series between live ends of the tuned and aperiodical circuits and the third C 3  being connected between the common terminal of C 1  and C 2  and earth, the third condenser C 3  being variable and coupled with the tuning condenser C L  of the tuned circuit. L a  and L m  indicate the aerial coil and grid coil respectively. The variable condenser C 3  is adjusted so that a signal from the aperiodical to the tuned circuit reaches its maximum value within the given tuning range while the transmission of image frequencies is reduced to a minimum. The mathematical theory of the circuit is explained.
Patent GB-1025272-A (GB)
Title: Improvements in or relating to electric water heaters
IPC: H05B1/02
Filed: 1962-08-21
Abstract: 1,025,272. Electric water heaters. L. H. VICKERS. Aug. 21, 1963 [Aug. 21, 1962], No. 32128/62. Addition to 991,408. Heading H5H. A cartridge-type heating element of the type described in the parent Specification for use in a flow heater, is modified by the provision of a fusible portion in the form of a short length of wire which is of lighter gauge than the remainder of the wire constituting the heating element.
Patent GB-466176-A (GB)
Title: Improvements in and relating to the packing of cigarettes and other articles
IPC: B65B19/22
Filed: 1935-11-20
Abstract: 466,176. Packeting-machines. CRIGHTON, J., and INDUSTRIAL MACHINERY CO., Ltd. Nov. 20, 1935, No. 32187. [Class 94 (i)] In a machine for packing cigarettes &c. in slide and shell containers, a turret of annular form having holding devices for the slides is provided, the turret being intermittently rotated by a rotary driving element successively engaging radial grooves located in and beneath the turret. As shown, a rotary table is provided with an annulus 10 supported in a horizontal plane on a mounting 11 by rollers 14 carried on a flange 15. The annulus is formed with slots 16 on its lower face, adapted to be engaged by a driving pin 18 on a constantly driven disc 17. The disc is driven from a shaft 23 through gears 20 .. 22. The annulus is locked during the stationary periods by a roller 26 on a bell-crank lever 27 operated by a cam 29 on the disc 17 to engage one of the slots 16. A ring 31 is mounted on the annulus and is formed with locating slots for the packet engaging or holding devices 32, which may be arranged as a double or single set. In a modified construction, the ring may be formed integral with the annulus.
Patent GB-342327-A (GB)
IPC: B60K6/52
Filed: 1929-10-23
Abstract: 342,327. Petrol - electric vehicles. TATRA-WERKE, AUTOMOBIL - UND WAGGONBAU AKT.-GES., 200, Kartouzska Ul, Smichov, Prague. Oct. 23, 1929. No. 32224. Convention date, Jan. 11. Addition to 340,348. [Class 79 (iii).] In vehicles having the casings of electric motors or dynamos incorporated in a central-tube chassis, as described in the parent Specification, and having one or more pairs of driving wheels, a separate motor is employed for the driving wheels located on opposite sides of the vehicle. In the arrangement shown, a motor 6 arranged in front of two pairs of driving wheels is employed for driving the axles 10, 10a through the bevel gearing shown, while another motor 8 arranged behind the wheels is employed for driving the axles 101, 10a<1> on the other side. Alternatively, one of the motors may be arranged between the two pairs of half axles. Specification 277,981, [Class 79 (ii), Motor vehicles, Driving &c.], is referred to.
Patent GB-185358-A (GB)
Title: Improvements in apparatus for pressing food stuffs
IPC: A47J27/20
Filed: 1921-12-02
Abstract: 185,358. Haworth, R., and Nuttall, T. Dec. 2, 1921. Meat and like presses.-A device for pressing food-stuffs, particularly beef and tongue, comprises a box-like casing A having in the bottom one or more apertures B closed by screwed stoppers C, and provided with a loose false bottom D. In use, the material to be pressed is placed in the box A and pressure exerted on the bar e carried by the removable plate E. When the necessary pressure has been obtained, the plate E is retained in its depressed position by means of a locking device comprising rods e<1> which pass through holes in the ends of the bar e and have springs e<3> interposed between the heads e<2> and the bar e. The rods are provided with notches e<5> adapted to be engaged by clips e<6> slidably mounted on lugs e<4> fixed to the casing A. The locking-device may be constructed to operate automatically. On completion of the pressing operation the plate E is removed and the stopper C unscrewed, one or more fingers being then inserted in the aperture B to lift the false bottom D.
Patent GB-277603-A (GB)
Title: Controlling device for grinding machines or the like
IPC: B24B47/06
Filed: 1926-12-21
Abstract: 277,603. Jung, K. Sept., 18, 1926, [Convention date]. Liquid-pressure engines.-In a hydraulically-actuated grinding or like machine having a longitudinally - reciprocating table and a transversely movable table, an auxiliary motor, supplied with fluid from a separate source, is employed to actuate the device which brings about reversal of the reciprocation, and also to give cross-feed to the transversely movable table. At the ends of the strokes of the reciprocating table, dogs thereon actuate a lever on a shaft 26, raising or lowering a piston valve 12 - - 14, movable in a sleeve 11 in a housing 1., thereby allowing fluid from a pump 3 to pass through a port 15. or 16. to a chamber 17 in which is a radial piston carried by a shaft 18. Rotation of the shaft actuates cross-feed mechanism and also, through an eccentric rod 30, rod 32, and levers 34, 35, moves a rod earrying pistons 37 - - 39 in a sleeve 40 in the housing 1, thereby permitting fluid from a pump 2 to pass through a port 42, or 43, to cylinders having pistons therein which reciprocate the table; exhaust ports 46, 47, 22, 23 are provided in the sleeves.
Patent GB-742974-A (GB)
Title: Improvements in valve assemblies
IPC: F16K15/06
Filed: 1953-11-23
Abstract: 742,974. Valves. MARMAN PRODUCTS, CO., Inc. Nov. 23, 1953 [March 23, 1953], No. 32370/53. Class 135. A valve assembly suitable as a check, relief or pilot pressure controlled valve for mounting at a joint in a pipe-line comprises a hollow faired valve 42, an annular seat 51, a mounting bracket 13 attached to the seat and extending through the valve wall at 65 to connect with the valve by means permitting longitudinal sliding movement of the valve. The bracket carries a dashpot cylinder 55, through leak apertures 58 in the end walls of which passes a piston-rod 45, 46 securing two halves 41, 42 of the valve together and carrying a piston formed by two dished plates 61 which frictionally engage the cylinder if the valve is moved too fast. The piston may be a single spring-loaded land. The valve seat is carried by an annular member 32 on to which folded flanges 27 secured to the pipe ends 12 are sealingly pressed when a V-band clamp 15-16 is tightened by a quick-release latch. The end 50 of the seat may. mate with the end of a flange of the part 42 overlapping the part 41 while the valve may be formed of two coned portions, one having a radial flange co-operating with the seat. The valve may be positioned or loaded against the flow pressure by a pressure applied through a pipe to the cylinder chamber 60 by a manual pump or a pressure sensing device such as bellows.
Patent GB-922136-A (GB)
Title: Transmission
Inventor: FELL LOUIS FREDERICK RUDSTON
IPC: B61C9/10
Filed: 1960-09-21
Abstract: 922,136. Locomotive driving gears. ROLLS-ROYCE Ltd. Sept. 14, 1961 [Sept. 21, 1960], No. 32379/60. Addition to 841,963. Class 79(2). [Also in Group XXIV] In the locomotive driving arrangement of the parent Specification, one one-way clutch (15) is omitted.
Patent GB-748434-A (GB)
Title: Improvements in and relating to apparatus for processing filamentary tows
Inventor: HAYWARD GEORGE ERIC
IPC: D02J1/18
Filed: 1953-11-23
Abstract: 748,434. Spinning yarns. COURTAULDS, Ltd. Nov. 22, 1954 [Nov. 23, 1953], No. 32394/53. Class 120 (3). A travelling tow of mechanically crimped continuous and substantially parallel filaments is formed into a sheet of separated filaments prior to stapling by subjecting the tow to a tension sufficient to pull out the crimp without stretching the filaments as the tow is fed over one or more rotating members diverting the straight path of the tow between feeding and delivery devices and each comprising two or more filament bearing surfaces offset with respect to each other so that filaments bearing on one surface are teased away from filaments bearing on another surface. As shown, tow 1 is spread by passage in sinuous manner around fixed rods 3 and passes round a feed roller 4, whereat a liquid such as a lubricant may be applied by a wick 5 in a holder 6, around spinning members 7, 8, 9, 10, 11 and circumferentially-ribbed delivery roller 12, over a fixed guide 13 to a staple fibre cutter (not shown). Each opening member comprises contiguous discs 14, ribbed edges of which constitute the filament bearing surfaces, housed between flanges 16 and mounted eccentrically on a shaft 15. The discs split the tow longitudinally into groups 18 of filaments and the ribs 17 thereon tend to subdivide the tow into minor groups 19 thereof. The number of discs and the number of ribs on each disc, and also the rotary speed of each member, increase progressively for each member 8, 9, 10 and 11. Thread guides may be mounted between the opening members to deflect the tow from a straight path therebetween, or one or more of such members may be replaced by guides.
Patent GB-490643-A (GB)
Title: Improvements in or relating to the extraction of hormones
Filed: 1937-11-25
Abstract: Hormones are obtained from placental material by drying or freezing the material and then separating the blood-containing residues by cutters or like mechanical means after which, preferably, the dried blood corpuscles are separated from tirene by sieving or disintegrating.  The product may be further concentrated by methods known for extracting remedies from blood; it is useful for treatment of diseases of the thyroid gland.
Patent GB-461834-A (GB)
Title: Improvements in and relating to electric condensers
IPC: H01G9/022
Filed: 1935-11-25
Abstract: 461,834. Electrolytic condensers. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 25, 1935, No. 32644. Convention date, Nov. 30, 1934. Drawings to Specification. [Class 37] The electrolyte comprises a film of finely divided crystalline material, such as ammonium borate or acetate, sodium borate, acetate, phosphate or oxalate or Rochelle salt, wetted by a concentrated aqueous solution of the same material. A porous spacer may be used and this may be perforated with a series of holes. Reference has been directed by the Comptroller to British Specifications 311,778, [Class 37], and 388,395, and U.S.A. Specification 1,850,298.
Patent GB-189792-A (GB)
Title: Improvements in screw-propellers
IPC: B64C11/06
Filed: 1922-11-29
Abstract: 189,792. Levasseur, P. Dec. 1, 1921, [Convention date]. Screw and like propellers.- In variable-pitch screw propellers the blades are carried by cylindrical arms from the boss and a ball-bearing thrust block is provided on the arms for taking up centrifugal forces. The boss a has arms b, Fig. 1, with cylindrical parts h i, j k, which act as journals for the socket c at the blade root and the extension l of the socket respectively. The socket c is secured to blade bv bolts as described in Specification 157,776. The ball races for the ball bearing m abut on a collar p on the arm b and also on the extension ring l. For altering the pitch, each ring l carries a collar r having an arm s which is coupled by a rod t to a ring u slidably mounted on the shaft a. Sliding displacement is effected by rotating the nut x on the fixed piece y' through gearing w, z.
Patent GB-303984-A (GB)
Title: Improvements in or relating to the electrolytic manufacture of metallic powders
IPC: C25C5/02
Filed: 1927-12-03
Abstract: 303,984. Wade, H., (Soc. Anon Trefileries et Laminoirs du Havre, Anciens Etablissements L. Weller Soc. Co-operative de Rugles, et la Canalisation Electrique Reunis). Dec. 3, 1927. Copper, zinc. cadmium, tin, lead, and other metals, obtaining.-A carbonized compound in a state of dispersion as near as possible to colloidal solution is added to the electrolyte in order that the metals may be deposited on the cathode in a finely powdered form. Glucose treated with sulphuric acid and very finely divided sugar charcoal are suitable additions. In depositing copper the electrolyte may consist of a sulphuric acid solution of copper sulphate.
Patent GB-1510088-A (GB)
Title: Manufacture of knives
IPC: B23K15/00
Filed: 1976-08-06
Abstract: 1510088 Table knives WURTTEMBERGISCHE METALLWARENFABRIK 6 Aug 1976 [25 Sept 1975] 32778/76 Heading B4B [Also in Division B3] A knife is made by welding together blade 1 and handle 2 by electron-beam welding. The welding is along seam 4. Handle 2 is itself formed from two parts 2a, 2b by welding, along seam 5. All three parts 1, 2a, 2b may be held in the one clamp whilst being welded. During welding, a hole may be left in handle 2 for the air inside handle 2 to expand during hardening, or a partial vacuum may be drawn in handle 2. Blade 1 is hardened after welding and ground. In a second embodiment, Figs. 4-6 (not shown), the handle 2<SP>1</SP> is welded to blade 1<SP>1</SP> along a seam 4<SP>1</SP> on the handle side of transition segment 3<SP>1</SP>.
Patent GB-1007239-A (GB)
Title: Improvements in electrical connectors
IPC: H01R4/26
Filed: 1964-08-12
Abstract: 1,007,239. Making Electrical connection. AMP. Inc. Aug. 12, 1964, [Aug. 19, 1963], No. 32793/64. Addition to 956,118. Heading B3A. [Also in Division H2] A method of making an electrical connection between a conductor and a post in which the conductor is arranged transversely of the post and a connector is slid on to the post to engage the conductor and move it with the connector along the post is substantially the same as that disclosed in the parent Specification, but the claims relate to the use of a stranded conductor, the strands of which are constrained into a bunch by engagement with the connector. Each connector, supplied in strip form and of, for example, brass comprises side walls 32, 34 having dimples 50 which engage the post sides, a convex groove 40 having transverse internal serrations 55 along the web portion 30 which serves to constrain the strands and an inclined tongue 70 to provide a tapered entrance for the wire and conductor insulation supporting tabs 60, 62. Sharp edges adjacent each side of the tongue 70 cut into the insulation to facilitate shearing of the end section thereof during assembly. The tapered forward portion 44 of the walls serve as bumpers which engage and hence advance a previously assembled connector along the post during assembly.
Patent GB-536740-A (GB)
Title: Plastic compositions and methods of making same
IPC: B44F1/04
Filed: 1939-12-28
Abstract: 536,740. Cellulose-derivative and syntheticresin compositions ; films. TITANIUM ALLOY MANUFACTURING CO. Dec. 28, 1939, No. 33003. Convention date, Jan. 21. [Classes 2 (ii) and 2 (iii)] [Also in Groups III and XI] A composition capable of being formed into a sheet or film having the property of reflecting yellow light and transmitting blue light, is made by dispersing in a transparent or translucent base material (consisting of a synthetic plastic) a percentage, which is inversely proportional to the thickness of the sheet or film to be formed and is between 0.03 and 0.4 per cent. by volume for a sheet or film 1 mm. in thickness, of a white pigment in the form of particles of a substantially uniform size between 0.4 and 0.6 micron and of isomettic, tetragonal, orthorhombic or hexagonal crystal form and having a refractive index substantially different from that of the base material. Specified plastic base materials are synthetic resins of a phenolic, acrylic, styrene, poly-styrene or urea-formaldehyde base and cellulose nitrate, acetate and xanthate, and specified pigments are cerium dioxide, tin oxide, zirconium dioxide, titanium dioxide, thorium dioxide, antimony oxide, columbium oxide, tantalum oxide, and mixtures or combinations of these oxides with barium sulphate, calcium sulphate, zinc oxide, lithopone and fluorspar. A pigment in suitable form may be prepared by reacting a mixture of zirconium dioxide and soda ash at a temperature between 1660‹ and 1700‹F. until the zirconia grains peptise to form, as nuclei, uniform particles of less than 0.2 micron in size, which are then allowed to grow to the required size, as determined by periodic microscopic examination, the calcine being then cooled, treated with hydrochloric acid, digested with water, washed and dried.
Patent GB-1357227-A (GB)
Title: Identification device for use in taking a fluid sample from a patient
IPC: A61B5/117
Filed: 1971-07-16
Abstract: 1357227 Blood sampling BAXTER LABORATORIES Inc 16 July 1971 [20 July 1970] 33411/71 Heading A5R [Also in Division B8] An identification device for use in taking a fluid sample from a patient, comprises an elongate strip having a band portion 12 carrying at one end a fastener 16 operable to hold the band portion in a closed loop configuration, the strip including an attachment portion at the other end of the band portion for attachment to a pilot tube 14 for containing the fluid sample, and first and second indicia 18, 20 carried by the attachment portion and band portion 12, respectively. The band portion 12 is fastened in bracelet fashion around the wrist of a patient, and is severed along one side of the fastener, the fastener being provided with a tooth or cutting edge, and the pilot tube 14 having the indicia 18 thereon is released. A blood sample is taken from the patient by use of the pilot tube 14 which has an internal vacuum, a double-ended needle cannula being used to puncture the vein of the patient, and a self-sealing diaphragm within a plug 30 seals the pilot tube. For the purpose of testing the blood sample, the tube 14 may be provided with a liquid or solid substance disposed therein which suitably reacts with the blood drawn. The indicia elements 20 and 18 are readily individually removable from the band portion and tube respectively, and once adhered to a surface, such as a blood bag or a record card, cannot be readhered to a further surface. The band portion may be in the form of a laminate construction of outer plastics layers and an interposed layer of pressure-sensitive paper of the type impregnated with microscopic capsules of colourless chemical constituents which rupture on application of pressure to provide a distinct coloured presentation.
Patent GB-815551-A (GB)
Title: Improvements in or relating to harvesting machines
IPC: A01D25/00
Filed: 1956-11-01
Abstract: 815,551. Root crop harvesters. OVERUMS BRUK A. B. Nov. 1, 1956 [Nov. 3, 1955], No. 33419/56. Class 6(3). A beet harvester comprises two shares 2 arranged side by side and converging rearwardly, and a feeding device 5 which cooperates with the shares to move the lifted beets rearwardly to a conveyer 3, the feeding device 5 being provided with pins 8 to prevent lateral displacement of the beets. Two guide bars 12 are pivoted to the rear portion of the shares and rest against the transverse rods of the conveyers 3 so as to be vibrated by the same and thereby partly remove the soil from the beets, the spacing between the transverse rods being such as to allow soil and stones to fall therethrough to the ground. The upper run of the conveyer 3 forms the bottom of a channel for the purpose of preventing beets from falling from the conveyer 3, the side walls 10 of the channel extending forwardly to the feeding device 5.