baber/WOPTO huggingface dataset:
Patent GB-1398566-A (GB)
Title: Filter bag
IPC: B29C53/48
Filed: 1972-09-13
Abstract: 1398566 Forming tubes; seaming non- metallic sheet material CARBORUNDUM CO 13 Sept 1972 [23 Sept 1971] 42426/72 Headings B5D and B5K [Also in Division B1] A filter bag 11 is formed by fusing together overlapping edge portions 15 and 17 of a thermoplastic porous material. At least the edge portion 15 is heated by a blade-like electrically heated element 21 above its softening point and the rollers 23 and 25 set to about the thickness of the material.
Patent GB-1521055-A (GB)
Title: Surface cleaning apparatus and method
IPC: G03G21/10
Filed: 1975-10-16
Abstract: 1521055 Cleaning blade XEROX CORP 16 Oct 1975 [15 Jan 1975] 42456/75 Heading B6C A scraping blade for removing residual toner particles from an electrographic imaging surface is formed with spherical protuberances disposed thereon to contact said surface when the blade is pressed against it. A poly(vinylacetateethylene) copolymer blade having solid polystyrene spheres pressed into its surface is exemplified. The spheres should have a diameter of less than half the diameter of the toner particles with which the blade is to be used, e.g. 0À5 micron or less, and should resist deformation when pressed against the imaging surface.
Patent GB-1099009-A (GB)
Title: Actuating mechanism of the centrifugally operated rotating fluid cylinder type
IPC: F16D43/284
Filed: 1965-10-07
Abstract: 1,099,009. Controlling clutches. TWIN DISC CLUTCH CO. Oct. 7, 1965 [Nov. 17, 1964], No. 42572/65. Heading F2L. The presser-plate 11 of a multi-plate friction clutch C between an input shaft 1 and an output drum 9 is axially moved to engage, disengage and vary the engaging pressure of the clutch by a piston 16 moved against springs 33 by the centrifugal head of oil between the piston 15 and an identical piston 16 in a cylinder 13 which is rotated independently of the input shaft 1 (or by the input shaft, Fig. 3 not shown) at any selected speed. The cylinder 13 is driven from an external electric motor E through gears 44, 45, is fixed axially of the input shaft 1 and has the piston 15 press-fitted in one end. The pistons 15, 16 have interleaved curved-radial vanes to assist acceleration of the oil, and the piston 15 acts through a thrust race 26 and a sleeve 31 keyed to shaft 1 on the clutch presser-plate 11. An axial bore 36 in the input shaft 1 supplies oil to the pistons 15, 16 and to the clutch plates for cooling. In a modification, Fig. 3 (not shown), the fluid actuating piston cylinder (61) is driven at selected speeds from the input shaft 1 through a slipping friction clutch (69), the slip of which is controlled by an electromagnetic winding (B) selectively attracting the cylinder (61) against springs (65) axially away from a clutch plate (66) on the input shaft 1. Both pistons (71, 72) are splined for axial movement in cylinder (61) with piston (72) axially restrained relative to shaft 1 and the cylinder (61). The opposing faces of pistons (71, 72) have radial ribs to assist oil acceleration.
Patent GB-1168388-A (GB)
Title: Process for the preparation of Vulcanizable, Modified, Synthetic, Conjugated-Diene Polymers
Inventor: KOK PETRUS JOANNES
IPC: C08J3/215
Filed: 1968-09-09
Abstract: 1,168,388. Modified synthetic rubbers. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 9 Sept., 1968, No. 42808/68. Heading C3P. In a process for the modification of a synthetic conjugated diene polymer, a solution of the polymer is mixed with the " modifying agent " at a temperature below 100‹ C., the solvent is removed, and the resulting mixture is heated at a temperature of 50‹ to 250‹ C. prior to any mechanical processing. Thus, a solution of polyisoprene in isopentene has added thereto dilauroyl peroxide, monoanilide of maleic acid, chloranil, p-quinone dioxime, maleic anhydride, maleimide, or azo-bis-isobutyronitrile, or mixture thereof, the solvent is steam-stripped and the resulting aqueous crumb is heated to react whereafter the polyisoprene is ready for compounding. The " modifying agent " is a reactant which improves the physical and mechanical properties of the polymer.
Patent GB-1001696-A (GB)
Title: Improvements in or relating to position indicating devices
Inventor: GIERS CLARENCE ADAIR DE
IPC: G01F23/36
Filed: 1963-10-31
Abstract: 1,001,696. Electric selective signalling. LIQUIDOMETER CORPORATION. Oct. 31, 1963, No. 43007/63. Heading G4H. [Also in Division H1] In a position indicating device, rotation of a shaft 46 moves a magnet 55 supported thereon around a circle of flexible electrically-conductive reeds 56 to attract the reed(s) adjacent to the magnet end into electrical contact with an annular resistor 59 arranged concentrically with the shaft 46. In the particular embodiment, an arm 14 is moved in accordance with the level of liquid in a pressure-proof vessel by means of a float or pressure diaphragm. Arm 14 rotates a magnet 32 about a stationary shaft 33 by means of two crank arms adjustably connected by a link (Fig. 1, not shown). The movement of magnet 32 is followed by a similar magnet 37 fixed on the shaft 46 outside the pressure vessel, due solely to magnetic interaction between the magnets 32, 37. Thus the magnet 55 moves to tap off a length of the annular resistor 59. Figs. 8, 9 (not shown) show circuits to obtain an indication of the liquid level by measuring this tapped-off resistance. In Fig. 8, A.C. is fed through the tapped-off lengths of annular resistor 59 and of a balancing resistor from respective halves of a centre-earthed transformer secondary. The A.C. from the two resistors is fed through a wire junction into a phasesensitive amplifier which energizes a motor. The motor alters the tapping on the balancing resistor and drives an indicator. In Fig. 9, D.C. is fed through the resistor 59, and each of the two tapped-off parts of the resistor 59 is shunted by a corresponding stator coil. A rotor coil is attached to a pointer and aligns itself along the resultant magnetic field of the two stators. As shown in the drawings, a second magnet 55 (Fig. 5) on shaft 46 and a second annular resistor 59 may be provided, the two resistors 59 being connected in series or parallel. Specification 651,306 is referred to.
Patent GB-1531369-A (GB)
Title: Turf perforating device
IPC: A01B45/02
Filed: 1976-10-16
Abstract: 1531369 Turf-perforating devices M L KILLION 16 Oct 1976 43051/76 Heading A1B In a device for perforating a lawn by removing plugs therefrom, turf perforating tools 83 are mounted each on a piston 81 which is reciprocated by means of a crank shaft 12, crank-arms 76, 77 and a connecting rod 79, and guided in a slotted cylindrical sleeve 13 pivotally connected to a frame member 63 and biased into a vertical position by a spring 74. The device has a wheeled frame and supports an engine which drives the crank-shaft 12 by means of a disengageable belt drive 17. As shown the device has three tools 83 whose respective crank arms are arranged around the crank-shaft with 90‹ spacing such that in one position of the shaft, Fig. 3, all the tools are raised above the turf for transport. The device has a handle 46 and is wheeled in use by an operator.
Patent GB-910776-A (GB)
Title: Improvements in electric oil circuit breakers
IPC: H01H33/75
Filed: 1960-12-15
Abstract: 910,776. Oil-blast switches. ALLMANNA SVENSKA ELEKTRISKA A.B. Dec. 15, 1960 [Dec. 16, 1959], No. 43157/60. Class 38 (5). An oil circuit-breaker has an extinguishing chamber 1 including a plurality of pressure chambers 2 each partly filled with oil to a level controlled by openings 11 and with gas in the closed space above the oil. Each chamber 2 has a connecting channel 7 through which oil is forced at current zero into the arc passage 6 after the fixed contact 5 is withdrawn. Outlet channels 8, 9 between the chambers 2 exhaust to the surrounding oil, adjacent channels being spaced by 90 degrees to separate exhaust gases. The port of the chamber 1 around the fixed contact 4 is vented at 10 and the other end of the chamber 1 includes oil pockets 12 to assist in the extinction of low current arcs. Specification 910,775 is referred to.
Patent GB-935559-A (GB)
Title: Improvements in or relating to sum and difference signal producers
IPC: H03F1/34
Filed: 1960-12-16
Abstract: 935,559. Electric analogue calculating. PHILIPS ELECTRICAL INDUSTRIES Ltd. Dec. 16, 1960 [Dec. 21, 1959], No. 43396/60. Class 37. [Also in Group XXXIX] A sum and difference signal producer utilizes a circuit comprising a voltage amplifier and either three cathode followers or three transistors in common collector connection. Signals A, B, Fig. 1, are respectively applied to cathode followers 3, 7, the cathode resistors 4, 8 of which are joined by a voltage divider 9. A A+B sum signal is derived from terminals 11. 2 A third cathode follower 12 has its cathode resistor 13 joined by voltage dividers 14, 15 to cathode resistors 4, 8 respectively. The signal from centre tapping 18 of voltage divider 15 is applied to the grid of voltage amplifier 16, and the output of amplifier 16 is applied to cathode follower 12. The output of cathode follower 12, developed across resistor 13, is a signal of voltage- B and this output signal, together with the output signal A from cathode follower   3 provides a signal A-B/2 at terminals 20.   Phase shift at high frequencies is compensated for by capacitor 29. The direct voltage at the anode of amplifier 16 is supplied via filtering network 26, 27 to grid resistors 2, 6 of cathode followers 3, 7 to obtain substantially identical working of cathode followers 3, 7, 12. Common collector connected transistors 32, 33, 39, Fig. 2, replace the cathode followers and common emitter connected transistor 41 replaces amplifier 16.
Patent GB-1429385-A (GB)
Title: Presser bar pressure control modules
IPC: D05B29/02
Filed: 1973-09-17
Abstract: 1429385 Sewing machine presser bar SINGER CO 17 Sept 1973 [3 Oct 1972] 43522/ 73 Heading D1G A presser bar pressure regulating device, readily removable from the sewing machine, comprises a mounting plate 28 securable to the machine frame by screws 29, a spring 56 on a support 30 engageable with the presser bar 16 to bias it endwise and means for manually varying the spring force, the means comprising a cam wheel 41 engaged by a cam follower 48 which itself engages the spring. The stud 30 engaged by the spring is rotatably mounted on the plate and presents a lever 37 having an abutment 39 engaged by an adjustable screw 53 carried at an extremity 51 of the lever 48 pivoted at 49 to the plate. Rotation of the cam wheel 41 swings levers 48, 37 to rotate stud 30 and the one end of the spring 56 engaged in a slot in the stud. The other end 58 of the spring engages a grooved wheel 23 mounted on a block 20 secured to the presser bar 13. Other forms of spring may be employed. The edge of the wheel 41 may carry indicia. A hand operable lever 24 may co-operate with an extension 21 in the block 20 to raise the bar.
Patent GB-978133-A (GB)
Title: Couplings for non-aligned shafts
Inventor: BALDWIN DONALD RICHARD
IPC: F16D3/04
Filed: 1961-12-06
Abstract: 978,133. Shaft couplings. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 7, 1962 [Dec. 6, 1961], No. 43719/61. Heading F2U. An Oldham coupling which permits circumferential adjustment between axially misaligned control shafts of electronic apparatus comprises a coupling disc 21 having on each face 21a, 21b a pair of diametrically aligned radial projections 23, 25, the projections 23 which are perpendicular to the projections 25 engage one of a number of pairs of slats 7 in a disc 5 fast with the shaft 1 whilst the projections 25 engage one of a number of pairs of slats in a disc 15 fast with the shaft 3, the number of pairs of slats 7 in the disc 5 differing from the number of pairs of slats 17 in the disc 15 to permit circumferential adjustment. The discs 5, 15 are provided with central recesses 5D, 15D. Axial play between the discs 5, 15, 21 permits slight universal movement.
Patent GB-1519378-A (GB)
Title: Condensation products of glycidol with diglycolamides
IPC: C09K23/00
Filed: 1976-10-22
Abstract: 1519378 Cosmetic creams L'OREAL 22 Oct 1976 [23 Oct 1975] 44010/76 Heading A5B [Also in Divisions C2 and C5] A cosmetic cream contains a novel surface-active agent of formula: where R is a saturated or unsaturated aliphatic hydrocarbon radical which may be substituted by one or more hydroxyl groups and n is 1-5.
Patent GB-1117366-A (GB)
Title: Float valves
Inventor: SOBOLEV ALEXIS
IPC: F16K33/00
Filed: 1965-10-18
Abstract: 1,117,366. Valves. NATIONAL RESEARCH DEVELOPMENT CORPORATION. 17 Oct., 1966 [18 Oct., 1965], No. 44088/66. Heading F2V. With the object of reducing water-hammer, a float for a water storage cistern has one flat face (2), Figs. 1 and 2 (not shown), of an area not less than 50 sq. inches and intended to be submerged. The float has means for adjustably connecting it to an arm so that the face can be brought parallel with the free surface in valve closed position; this may be a threaded fork (4) on the arm pivotablly connected to the float by a bolt (5). The float may be hollow and of metal or plastics such as polyethylene, P.V.C. or polypropylene, or solid and made of foamed plastics.
Patent GB-995029-A (GB)
Title: Improvements in wrapping machines
Inventor: GRIFFITHS WILLIAM
IPC: B65B11/10
Filed: 1962-11-22
Abstract: 995,029. Wrapping machines. FORGROVE MACHINERY CO. Ltd. Oct. 28, 1963 [Nov. 22, 1962], No. 44222/62. Heading B8C. An article 15 to be wrapped is pushed from a platform 16 by a pusher 17 so as to draw around three sides of it a web 10 of heat sealable wrapping material and pass on to an elevator 11 which is then raised to the position shown so that the web, gripped at the end by rollers 12, 13, is drawn completely round the article; a heated knife 22 then severs the web and forms bead-seals in the overlapping layers of the web along the edge of the article and in joining the bulk 10 of the web to the end gripped by the rollers 12, 13. The web 10, fed from a reel (not shown), is held by rollers 12, 13 and gripped between a bar 21 on the elevator and adjacent clamping bars 19, 20, which advance to clamp overlapping layers of the web against the bar 21. The heated knife 22 then moves to sever the web and form one bead seal in the wrapper surrounding the article and also another in joining that portion of the web gripped by the rollers 12, 13 to that on the reel. Members 19, 20 and 22 are retracted, the article is pushed on to the platform 19 and the elevator lowered to the original level. By means of a depressable member on the elevator, microswitch 27, solenoid 28, pawl 29 and ratchet 30 the web is suitably drawn down by a feed roller 14 to ensure that the bead-seal joining the web on the reel to that held between the rollers 12, 13 is not present in the portion of web folded around the next article.
Patent GB-1416579-A (GB)
Title: Power amplifier
IPC: H03F3/21
Filed: 1973-09-20
Abstract: 1416579 Power amplifiers SONY CORP 20 Sept 1973 [21 Sept 1972] 44236/73 Heading H3T In a power amplifying device comprising at least two amplifying circuits 3A, 3B, Fig. 1, each including an input, at least one voltage amplifier stage 4A, 4B at least one power amplifier stage 5A, 5B and an output, all connected in cascade, and further including a signal input terminal 6A, 6B and a signal output terminal 7A, 7B switch means 11-14 selectively interconnects the stages of the amplifying circuits 3A, 3B to selectively establish a parallel connected amplifying circuit and individual amplifying circuits. The voltage amplifiers 4A, 4B are shown as class A operational amplifiers including common emitter output providing high output impedance. The power amplifier stages 5A, 5B operate in class B as impedance converters having high input impedance and low output impedance such as emitter followers which may be as shown in Fig. 4. The switches 11-14 which may be mechanical electronic or electromechanical are ganged and in position a provide two separate amplifier channels 6A, 3A, 7A and 6B, 3B, 7B which may be used for a stereo signal power amplifier. In switch position b the amplifying circuits 3A and 3B are connected in parallel at the inputs and outputs of the voltage amplifiers 4A, 4B and the impedance converter power amplifiers 5A, 6B. In switch position c the output of the amplifying circuit 3A is connected to the inverting input of the amplifying circuit 3B which has its non-inverting input earthed. Resistors 8C and 9B reduce the amplified output from 7A so that the input signal amplitude to voltage amplifier 4B is the same as that of the input 6A to the voltage amplifier 4A. The output from 7B is then the same amplitude as that from output 7A but of opposite phase so that a balanced transformerless output connection is provided.
Patent GB-1515156-A (GB)
Title: Transcalent semiconductor device
IPC: H01L23/427
Filed: 1975-10-28
Abstract: 1515156 Semi-conductor devices RCA CORPORATION 28 Oct 1975 [20 Dec 1974 9 Jan 1975] 44424/75 Heading H1K A semi-conductor device comprises a semiconductor wafer 10 bonded to metal walls 28, 30 of heat pipes 20, 22, the metal walls 28, 30 being 500-1000 microns thick and conforming to the surfaces of the wafer 10 to which they are tightly bonded with a solid metal bond. The device may be a Si thyristor and the metal walls may be Cu, Ag, Mo or W. The wafer 10 may be protected by an annular enclosure formed by cylindrical metal and ceramic parts (54, 56, 58, 60), Fig. 1 (not shown), and the heat pipes 20, 22 may have cooling fins (48, 52).
Patent GB-1515668-A (GB)
Title: Acoustic thermometers
IPC: G01K11/26
Filed: 1975-08-18
Abstract: 1515668 Acoustic thermometer UNITED KINGDOM ATOMIC ENERGY AUTHORITY 18 Aug 1975 [14 Oct 1974] 44473/74 Heading G1G An acoustic thermometer comprises a single integral piece having a sensor 12, whose resonance frequency is temperature dependent, joined to an acoustic transmission line 10 by a region 13 of the line of reduced cross-sectional area. The integral form of the thermometer, whose detailed operation is as set out in Specification 1146520, helps prevent breakage due to thermal shock. As described here a cylindrical rod transmission line 10 is machined at one end to give a slotted sensor 12 joined to the remainder of the line by a cut portion 13 in the form of a cylinder, Fig. 2, (not shown) or flat part, Fig. 3, (not shown). Empirical relationships between dimensions and material constants are given for thermometer design but the thermometer must be calibrated. Another embodiment, Figs. 5-7, (not shown) uses strip material. The thermometer may be of Mo; W; ZnMo alloy; W, steel or ceramic material (e.g. alumina or sapphire). In metal strip form the thermometer is used when flexibility is required.
Patent GB-1033948-A (GB)
Title: Treating synthetic polymer fibres, particularly acrylic fibres, to improve their light stability
IPC: D06M101/16
Filed: 1963-11-12
Abstract: 1,033,948. Treating synthetic polymer fibres. MONSANTO CO. Nov. 12, 1963 [Nov. 19, 1962], No. 44681/63. Heading B5B. Synthetic polymer fibres which have been formed by a wet spinning process, particularly acrylic fibres, are treated while they are still in their gel state with a solution of a naphthalene disulphonic acid or of an alkali metal salt thereof. The fibres may be composed of at least 80% acrylonitrile and up to 20% of another mono-olefinic monomer copolymerizable therewith, e.g. a copolymer of 94% acrylonitrile and 6% vinyl acetate. They may be composed of a blend of 88% of a copolymer of 94% acrylonitrile and 6% vinyl acetate and 12% of a copolymer of 50% acrylonitrile and 50% methyl vinylpyridine, all percentages being by weight. The acrylic fibres may be wet spun in a conventional manner and may be treated with the sulphonic acid or its salt by the addition of the sulphonic acid or its salt to the conventional finish bath. The process stabilizes the fibres against ultra-violet light and improves their basic dye uptake.
Patent GB-1461870-A (GB)
IPC: H04N9/79
Filed: 1974-10-16
Abstract: 1461870 Colour television SONY CORP 16 Oct 1974 [16 Oct 1973] 44862/74 Heading H4F A PAL or NTSC colour television signal is recorded on a magnetic tape in the form of a frequency modulated luminance component and a chrominance component formed by frequency converting the received chrominance component to a lower frequency range; an NTSC signal has a recorded subcarrier frequency f CN  = (¢n-“)f HN  where n is a positive integer and f HN  is the line frequency of the NTSC signal, whereas a PAL signal has a recorded subcarrier frequency f CP  = (¢n - #)f HP  where f HP  is the line frequency of the PAL signal. The reproduced signal is separated into its luminance and chrominance components by high-pass filter 4 and low-pass filter 8 and the chrominance component is supplied to a frequency converter 9 to derive a chrominance component having the PAL subcarrier frequency of 4À43 MHz. The frequency converter 9 receives the output of a frequency converter 10 which supplies the sum frequency of the output of a fixed frequency oscillator 15 providing a signal of PAL subcarrier frequency, a multipler 13 providing a signal of m times the reproduced line frequency (f HN  or f HP ) and a variable frequency oscillator 14 whose centre frequency is f CN -mf HN  for a reproduced NTSC signal and f CP -mf HP  for a reproduced PAL signal. Variable frequency oscillator 14 is controlled by a phase comparator 22 receiving the output of fixed frequency oscillator 15 and colour synchronizing bursts separated from the output of frequency converter 9. The multiplier m is an integer approximately equal to (f CN -f CP )/(f HN -f HP ). In a specific arrangement n is 88 so that f CN  is 688À363 kHz and f CP  is 685À547 kHz. As a result (f CN -f CP )/(f HN -f HP ) is 25À83 and m is chosen to be 25. The centre frequency of variable oscillator 14 is then 295À013 kHz for NTSC and 294À922 kHz for PAL so that a wide range oscillator 14 is not required.
Patent GB-1021673-A (GB)
Title: Specimen identification apparatus
IPC: G06K9/64
Filed: 1962-11-30
Abstract: 1,021,673. Automatic character reading. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 30, 1962 [Dec. 4, 1961], No. 48303/62. Heading G4R. In a character reading apparatus the character area is treated as a co-ordinate array of subareas and is scanned to determine the number of black sub-areas in each of the columns and in each of the rows and the character is identified by comparing these sets of counts or combinations of them with reference values. The character, 10, Fig. 1, is scanned by scanner 14, Fig. 2, and the sub-areas containing character parts in each column and row are counted in counters 16a, 16b &c. The values in the counters are subtractively added to reference values from registers 18a, 18b &c. for each character in adders 20a, 20b &c. For a perfect match an output will appear on the "O" lead of each adder. All the adder outputs relating to each character are applied to series connected gates 32a, 32b &c. as shown in Fig. 3 so that if a perfect match is detected in each adder a signal appears on the corresponding output lead 35. To pass slight mis-matches switches 24a, 24b and 26a, 26b may be provided to give outputs when the input count differs from the reference by one or two. In another form the counts for each column and row are combined in groups of two or four, the total values being applied to circuits which give one of three outputs according to the range of the count and the range signals are compared with reference range signals. The comparisons for each character are gated together to provide a recognition signal.