baber/WOPTO huggingface dataset:
Patent GB-774927-A (GB)
Title: Improvements in or relating to forming flanged openings or nipples in sheet metal
IPC: B21C37/29
Filed: 1954-12-23
Abstract: 774,927. Making pipe fittings. HUET, A. Dec. 23, 1954 [Feb. 26, 1954], No. 37283/54. Classes 83 (2) and 83 (4). Flanging.-A method of forming a flanged opening or nipple in a plane or cylindrical metal wall by means of a punch which penetrates from one side of the wall which is pre-heated, and squeezes the metal into a clearance space between the punch and a die held against the other side of the wall is characterized in that during the punching operation that portion of the metal which is being worked is heated from the interior of the die. In an embodiment a jack b carrying a punch c is positioned inside a superheater header a opposite a drilled hole a<SP>1</SP> and a die d provided with a recess f is placed outside the header. The punch comprises a head g followed by a cylindrical collar h and a truncated conical base portion i. A guide-pin j in the die recess f engages with a bore k in the punch to centre the punch in the die. The metal wall adjacent the hole a is heated during the nipple-forming operation by hot gases introduced into the die through channels d<SP>1</SP> and exhausted through channels d<SP>2</SP>. In operation the punch enters the die recess f (Fig. 3) and the truncated conical portion of the punch shapes the nipple on the die. The nipple is provided with a chamfered end m. The cylindrical collar h of the punch is notched to cut away any excess metal and the metal chips collect in the die recess f from which they are later removed. The collar also assists in centring the punch when it enters the recess f. Channels (not shown) may be provided in the die and punch for a cooling medium. In another embodiment the nipple-forming operation is carried out in two stages. First a conventional punch roughs out the nipple, as shown in Fig. 4, and then a punch having a cylindrical collar h<SP>1</SP> followed by a truncated conical base portion i<SP>1</SP> is used as hitherto to form the nipple. A double chamfer may be formed on the end of the nipple by providing a step m<SP>1</SP> in the die, as shown in Fig. 6.
Patent GB-800066-A (GB)
Title: Peak voltage regulator
IPC: G05F1/26
Filed: 1956-12-06
Abstract: 800,066. Automatic voltage control systems. COLLINS RADIO CO. Dec. 6, 1956, No. 37351/56. Class 38 (4). In an A.C. voltage stabilizer an amplified version of the output voltage is fed back to boost the input and the gain of the amplifier is varied in accordance with the difference between the peak value of the output voltage and a preset level. The input transformer 10 is coupled to the output transformer 13 by a booster transformer 17. A portion of the output is tapped off a potential divider 23, 24 and is amplified by a variablemu pentode 51 and power amplifier 57 to enertize the booster transformer 17. The output is also applied to a diode 66 which is biased to a preset level by a stabilizer tube 34 and potentiometer 37 so as to conduct only when the positive-going peak amplitude of the output exceeds the bias. The resulting pulses are amplified (and reversed in phase) by a pentode 68 and the peak amplitude of the pulses is detected by a diode 73 having a load 55, 77 with a long time-constant. This peak amplitude signal provides a negative bias to control the gain of the variable-mu amplifier 51 so as to maintain the peak amplitude of the output of transformer 13 constant at a level determined by the potentiometer 37.
Patent GB-1080535-A (GB)
Title: Apparatus for increasing the signal-to-noise ratio in electrical signal transmissionsystems
IPC: H04N11/12
Filed: 1964-09-15
Abstract: 1,080,535. Colour television; radio receiving systems. FERNSEH G.m.b.H. Sept. 15, 1964 [Sept. 17, 1963], No. 37610/64. Headings H4F and H4L. To increase the signal-to-noise ratio of a compound signal such as a colour television signal in which chrominance signals are transmitted modulated upon a sub-carrier which falls within the luminance signal bandwidth, the luminance and chrominance signals are separated into lower and higher frequency portions and the transmission factor of the higher frequency signals of which the amplitudes are less than a predetermined level, e.g. the noise level of a transmission link, are reduced before the two frequency portions are recombined. As shown in Fig. 2 the colour television signal which comprises a luminance signal having a frequency range of 0 to 5 Me/s. upon which is superimposed a colour sub-carrier having a frequency of 4.35 Mc/s. and modulated by chrominance signals having frequencies up to 1.5 Mc/s. is divided at the end of a transmission link among four channels I, II, III and IV and after traversing these channels is recombined in an adding stage 50. Channel I contains a low-pass filter 11 arranged to pass only the lower-frequency components of the luminance signal, e.g. the band from 0 to 0.5 Mc/s. Channel II includes a band-pass filter 21 which passes only the colour sub-carrier and the associated lower-frequency side-bands, e.g. the pass-band 4À35 Œ 0.3 Mc/s. Channel III includes a band-pass filter 31 of which the lower cut-off frequency coincides with the upper cut-off frequency of the low-pass filter 11 and the upper cut-off frequency corresponds with the highest modulation frequency of the lower sideband of the colour sub-carrier, i.e. 2-85 Mc/s. Following band-pass filter 31 is a de-emphasis device 33 which attenuates the signals having amplitudes less than the noise level. Channel IV includes a band-stop filter 41 the stop-band of which corresponds to the pass-band of filter 21, i.e. 4À35 Œ 0À3 Mc/s., followed by a band-pass filter 42 which passes the full range of sidebands of the sub-carrier which owing to the upper limit imposed by the 5 Mc/s. cut-off of the luminance channel extends from 2.85 Mc/s. to 5 Mc/s. Following band-pass filter 42 is a second de-emphasis device 44. To compensate for transmission distortion introduced by the de-emphasis devices those signal components of higher frequency and small amplitude, which are suppressed or attenuated at the end of the transmission link, may be pre-emphasized by amplitude-dependent amplification at the beginning of the transmission link by passing the signal through a similar circuit as that shown in Fig. 2 wherein the de-emphasis devices are replaced by pre-emphasis amplifiers. Fig. 3 illustrates the frequency bands passed by channels I to IV. In a further embodiment, Figs. 4 and 5, not shown, the signal is divided into three channels, i.e. channels III and IV are combined by replacing band-pass filter 42 by a high-pass filter with cut-off frequency 0.5 Mc/s.
Patent GB-821201-A (GB)
Title: Improvements in production and control of electron beams
IPC: G21K1/093
Filed: 1957-12-03
Abstract: 821,201. Electron beam apparatus. GENERAL ELECTRIC CO. Dec. 3, 1957 [Dec. 4, 1956], No. 37627/57. Class 39(1). In an electron beam apparatus wherein an electron beam is generated inpulses at a predetermined frequency and directed towards an electron-transmitting window, deflection means are provided and so synchronised with the beam pulses as to sweep the beam cyclically over the length of the window at an odd-numbered multiple of half the pulse frequency so as to obtain a substantially uniform electron load on the window. In the tube shown, electrons emitted at the cathode 12 are guided and accelerated by electrodes 15 into the cylindrical portion 23 of the stainless steel anode. Deflection coils 37, 43 cause the beam to be scanned over the elongated window 14 which is sealed in the end of the flat funnelshaped portion 26 of the anode. A cathode filament biasing system including a peaking transformer 28, Fig. 2, produces successive energy pulsations of substantially square wave-form delivered during alternate halfcycle intervals of A.C. power supplied through the transformer 20. The substantially uniform velocity electron beam pulses thus produced are deflected longitudinally of the window by coils 37 supplying a flux of frequency equal to 2n+1 / 2 Fp where n is an integer V Fp is the frequency of the beam pulses. Coils 37 are energized through an adjustable three-phase autotransformer 39 which is so adjusted that the beam is swept from one end of the window 14 to the other during each beam pulse. Coils 43 deflect the beam transversely of the window at a sweep frequency substantially higher than the longitudinal sweep frequency.
Patent GB-1300704-A (GB)
Title: Refrigeration system and method
IPC: F25B15/06
Filed: 1971-08-11
Abstract: 1300704 Refrigerating BORG WARNER CORP 11 Aug 1971 [24 Aug 1970] 37787/71 Heading F4H In a continuous cycle absorption refrigeration system, e.g. using lithium bromide solution as absorbent and water as refrigerant, when a cooling medium such as water is available as in winter at a temperature below the temperature of the chilled fluid sufficient to satisfy the refrigeration load, the absorption cycle is suspended, the heat supply to the generator is stopped, and absorbent removed, and the absorber is operated as a condenser to liquefy the refrigerant vaporized in the evaporator, the refrigerant condensate being cycled back to the evaporator. The system comprises a condenser 18 and generator 24 in an upper shell 10 and an evapora - tor 34 and absorber 40 in a lower shell 26. The absorber is arranged in a closed circuit to receive vaporized refrigerant from the evaporator 34 and to receive recirculated absorbent solution. The refrigerant is vaporized in the evaporator by heat exchange with a fluid to be chilled passing in a circuit from a refrigeration load to a chilling coil 28 in the evaporator. A circuit 14 for a cooling medium, e.g. water which normally abstracts heat from the absorbent solution comprises a further cooling coil 36 in the absorber, a condenser coil 12 and a cooling tower 108. A three-way valve 106 in the circuit is controlled in accordance with the inlet temperature of the fluid to the coil 36 to direct cooling fluid via either the cooling tower or a by-pass line 122 to the absorber coil 36. Steam input to the generator is controlled by a valve 22 in accordance with the temperature of the chilled fluid passing to the load. When the temperature of the cooling fluid passing to the absorber is below that of the chilled fluid passing to the load, absorbent solution is removed via a solution pump 72 and a valved conduit 208 to a receiver 200 or the like. Thereafter a bypass passage 220 comprising a valve 232 in a line 230 and an eductor 222 is opened to pass the refrigerant to a pump 92 and thence to the evaporator 34 for passage via a spray 30 over the coil 28. Unvaporized refrigerant passes from a collecting pan 32 in the evaporator to the pump 92 for recirculation.
Patent GB-1247294-A (GB)
Title: Improvements in machines for drying sheets of paper or lacquer boards coated with varnish or the like
Inventor: LOVEDAY HARRY WINSTON
IPC: D21F5/00
Filed: 1969-07-29
Abstract: 1,247,294. Drying sheets. GREENBANK ENG. CO. Ltd. 20 July, 1970 [29 July, 1969], No. 37982/69. Heading F4G. A machine for drying sheets of paper (6), Fig. 3 (not shown), or lacquer boards comprises a conveyer 4 on which the sheet is placed located between upper 1 and lower 3 chambers. A fan 2 blows warm air through the sheet and conveyer 4 into the lower chamber 3 where the fan 2 produces a suction effect and draws the cooled air upwards, and while some air escapes through a duct 15 the remainder is recirculated through a heater 17 down into the chamber 3 and in addition fresh air is drawn into the fan 2 from the atmosphere. The suction effect in chamber 3 holds the paper sheet on to the conveyer 4 which is formed of perforated slats (5a), Fig. 3 (not shown). In the case of thin sheets of paper being dried the conveyer 4 is covered by an endless blanket 7 on which the paper sheets are laid. A second chamber 21 has cold air drawn into it by a fan 19 through a duct 23 to provide cooling for the paper sheet. An air jet 24 may be used to lift the leading edge of the paper sheet off the conveyer 4.
Patent GB-1100105-A (GB)
Title: Method of making coated arc welding electrodes
IPC: B23K35/40
Filed: 1965-09-06
Abstract: An arc welding electrode is made by extruding a coating composition about a wire, tube or solid rod of iron or steel, the composition comprising a minor proportion, preferably 2-10% by weight of the composition, of an inorganic constituent having a melting point between 150 DEG C. and 600 DEG C., e.g. boric oxide or chromium trioxide.  Specific  flux coating compositions given are .1).Calcium carbonate.18% ..Titanium dioxide.14% ..Felspar.12% ..Iron powder.36% ..Ferromanganese.11% ..Boric acid (H3BO3).9% .2).Felspar.60% ..Calcium oxide.20% ..Chromite ore.10% ..Silicon.5% ..Chromium trioxide.5% .and.. .3).CaCO3.40% ..CaF2.24% ..FeTi (25% Ti).10% ..FeNb.20% ..CrO3.6% wherein all proportions are by weight.  The electrode may have portions coated with dissimilar compositions, e.g. as coaxial layers, possibly extruded simultaneously.  The compositions may also contain copper oxide.
Patent GB-379958-A (GB)
Abstract: 379,958. Lavatory basins; valves. FARRER, W. G., Star Works, Heath Mill Lane, Birmingham. Jan. 12, 1932, No. 839. [Class 26.] A lavatory basin comprises a spraying chamber 5 mounted upon a central tubular standard 4 upstanding from the basin, a superimposed inlet chamber 7 communicating with the supply and separated from the chamber 5 by a partition 8 provided with an aperture 9, and a valve 16, for opening and closing the aperture, controlled by a member passing through or located within the standard. The valve 16 is secured to a rod 17 which passes through a gland 18 and the standard 4, and is coupled, as by a sleeve 28, to a rod 17a guided in a footstep socket 34 and carrying a heavy member 19. The latter serves normally to maintain the valve upon a seating 10, but can be raised to open the valve by the depression of one of two or more radially-disposed pedaloperated levers 20, each pivotally mounted at 25 in a sleeve 24 secured in a passage 21 in the basin-pedestal by means of a plate 27. The chamber 7 is fed from a fitting 11 which incorporates a mixing-valve, and the chamber 5 is of conical form and is provided with an annular series of inclined spray-apertures 6. Inspection apertures 30, 32 and waste-pipes 33 are also provided, and the coupled rods 17, 17a may be replaced by a single rod extending to the bearing 34.
Patent GB-1406259-A (GB)
Title: Sound record and the like holders
IPC: G11B33/04
Filed: 1972-08-15
Abstract: 1406259 Rackstands BETTERWEAR PRODUCTS Ltd 5 July 1973 [15 Aug 1972] 38047/72 Heading A4H A collapsible record holder comprises two elongate body parts 1, 2, e.g. of plastics, each provided with at least one longitudinal channel 3, the two parts being secured together by a channel member so that the or each channel of one part is substantially at right angles to the or each channel of the other part with the longitudinal axes of corresponding channels lying in a common plane. The two parts 1, 2 are held together by co-operating projections (14) and recesses (15) provided on rear flange portions and channel members 16 slidden over the rear abutting flange portions.
Patent GB-1496260-A (GB)
Title: Transport containers for liquids
IPC: B65D88/12
Filed: 1975-09-17
Abstract: 1496260 Transporttanks WESTERWALDER EISENWERK GERHARD GmbH 17 Sept 1975 [26 Sept 1974] 38129/75 Heading B8P A self-contained double tubular transport container comprises two adjacent, parallel, cylindrical liquid tanks 1, 2 extending between rectangular supporting end frames 4; T- members welded in various suitable positions on the liquid tanks; connecting members which are screwed to the various T-members and provide the following: upper and lower connecting members 3 arranged diagonally with respect to the tank cross-sections and connecting the tanks to the supporting end frames, at least two connecting members 6 extending transversely across the underside of the tanks to connect the tanks together and members 17 connecting the tanks together at points above the centre lines of the tanks; and optionally further T-members 14 are provided extending along the centres of adjacent sides of the tanks and which are screwed directly to each other.
Patent GB-852841-A (GB)
Title: Improvements in or relating to rotary wing aircraft
Inventor: GEORGE JAMES ELLAM SMITH-PERT
IPC: B64C27/50
Filed: 1957-12-10
Abstract: 852,841. Folding helicopter rotor blades. WESTLAND AIRCRAFT Ltd. March 5, 1959 [Dec. 10, 1957], No. 38299/57. Class 4. In a helicopter rotor the blades are power-folded by mechanism which initially releases blade-locking latches and locks the pitchchanging mechanism before commencing the folding operation. Each blade 1 is mounted on a hub (not shown) by a flapping hinge 3 and a drag hinge (not shown). A cuff 7 and a blade root fitting 6 are pivotally connected by a normally vertical pivot comprising a pin 5 which traverses the arms of both and extends upwardly to support a driving member 9 comprising a pinion 10 and a driving claw 16. The pinion 10 is engaged by opposed racks 14 driven respectively by fluid pressure jacks 12 and 13 mounted on fitting 6 and arranged to operate simultaneously in opposite directions under the control of pilot-actuated apparatus (not shown). Claw 16 engages a lever 17 rigidly secured to a spindle 15 which is parallel to pin 5 and carries a bell-crank lever 18 pivotally connected to locking pins 19, 21 which respectively lock blade latching mechanism 8 and the blade pitch-changing mechanism 22. Initial operation of jacks 12 and 13 withdraws bolt 19 and inserts bolt 21 whereupon a stop (not shown) on member 9 coacts with a stop on cuff 7 to limit further rotation of pinion 10 so that racks 14 and consequently the blade 1 will be caused to rotate about pin 5 to its folded position. A cam 23 is mounted on pin 5 to cooperate with a follower 24 on spindle 15 in such a way that they provide a greater resistance to blade spreading than to blade folding. Each hinge pin 5 is slightly inclined rearwardly to enable the folded blades to lie one above another.
Patent GB-1188315-A (GB)
Title: Bottle Closure Cap
IPC: B65D41/18
Filed: 1967-08-21
Abstract: 1,188,315. Caps for bottles. TIVOLI WERKE A.G. 21 Aug., 1967 [15 March, 1967], No. 38384/67. Heading B8T. A cap for a bottle 1 comprises an outer crown 3 of relatively hard plastics, having an integral ring 4 used to retain an inner plug 6 of a softer plastics. The retaining ring 4 is passed through the plug 6 on assembly, and then bent radially outwards for welding over a flange 5 in the plug.
Patent GB-1323585-A (GB)
Title: Parachutes
IPC: B64D17/54
Filed: 1970-08-10
Abstract: 1323585 Braking parachutes AERAZUR CONSTRUCTIONS AERONAUTIQUES 10 Aug 1970 [12 Aug 1969] 38409/70 Heading B7G A braking parachute is prevented from being damaged by the extractor device 4 which deploys the canopy 2 by having a tubular member 5 mounted on the canopy, which member is inflated as the canopy deploys and is of a material having a porosity lower than that of the canopy and when inflated its length and stiffness tend to restrain movement of the device 4, the canopy 2 being connected to the device 4 by a cable 12 passing through the member 5. The latter is reinforced by strips 8, 6. The device 4 includes a spring 13 and base plate 14.
Patent GB-1009371-A (GB)
Title: Collapsible reticular structure
IPC: E04B1/19
Filed: 1961-10-30
Abstract: 1,009,371. Hinges and pivots;. tent frames. E. P. PINERO. Oct. 30, 1961 [April 21, 1961], No. 38678/61. Headings E1A and E2F. A collapsible reticular structure which when erected provides a framework for a covering comprises a plurality of groups of n rods B jointed together at points 2 intermediate their ends for relative articulation and each end of each rod of a group being jointed at 1, 3 for relative articulation to the end of (n-1) rods of (n-1) further groups, the resultant three articulation axes of each rod being parallel and disposed transversely of the latter and lying in a common plane which also contains the longitudinal axis of the rod. The end joints 1, 2, 3, are directly interconnected by cables a, b, c, in direct tension to limit the unfolding of the assembly to provide a predetermined structure. The joints 3 may rest on their pins 15, Fig. 2, or on supporting legs connected to joints inward of the structure edge, stays being provided to the boundary in place of some cables c. The cables a b may be replaced by a fabric covering. The rods B may be bent at their central joint to remove the bending movements caused by straight rods. The central joints 2, Fig. 3, comprise fixed arms to which the rods are secured by nuts 7-9 while the joints 1, 3 comprise a core 10 mounting arms 11-13 to receive the rods and through which passes threaded pins 15, 16 on which is a movable sleeve 14, which can be screwed down over cables a-c passing through slots 17 to lock them in position.
Patent GB-369662-A (GB)
Title: Improvements in and relating to the radioscopic and radiographic reproduction of a section through a body
IPC: A61B6/02
Filed: 1930-12-24
Abstract: 369,662. R÷ntgen - ray apparatus. POHL, E., 27, Hospitalstrasse, Kiel, Germany. Dec. 24, 1930, No. 38913. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 23, 1931.] [Classes 98 (i) and 98 (ii).] To examine or photograph any particular section through a body, the tube is fitted with a diaphragm to obtain a confined conical bundle of rays, a continuous relative movement (preferably circular) is produced between the body and the tube in a plane parallel to the screen or plate, and the tube is synchronously rocked so that the central ray intersects the section plane at substantially the same point. For radiography the motions of two of the three elements, the tube body and the plate, are proportional to the distances from the fixed plane, so as to produce a constant shadow image. For radioscopy the relative movement of the screen is not essential, the image being made to appear stationary by a moving optical system. Plastic images may be produced by obtaining in rapid succession images of adjacent sections. Plastic models may be produced by superposed images of adjacent sections. In one arrangement with a stationary body of the table 1, the screen or plate 10 and a tube frame 12 are mounted on a framework of parallel rods 7 by ball and socket joints 8. The rods are pivotally mounted at 6 on transverse rods 4 which rotate in brackets 2. These brackets are vertically adjustable to bring the pivots 6 into the plane of the section to be reproduced. The tube 20, with its diaphragm 19, is mounted by a Cardan suspension in the frame 12 and the frame 21 directly carrying the tube slides in a socket 23 at the end of an adjustable arm 25 on the rotated vertical shaft 29. For obtaining a visually stationary image a lens may be mounted above the screen by arms connected to the rods 7, and viewed through a stationary mask. Alternatively a moving mirror may be used. A secondary-ray diaphragm may be placed between the body and the screen, and moved so that its partition walls always lie in the direction of radiation. For plastic reproduction vertical movement may be given to the rods 4.