baber/WOPTO huggingface dataset:
Patent GB-477932-A (GB)
Title: Improvements relating to the purification of waste waters
IPC: C02F3/10
Filed: 1936-09-17
Abstract: 477,932. Treating sewage; filters. BRINTZINGER, H. Sept. 17, 1936, No. 25357. [Classes 46 and 111] Granular burnt pyrites is used as a catalyst in the treatment of waste water with air or gas containing oxygen. In the apparatus shown in Fig. 1, layers 4, 7 of burnt pyrites are supported on a surface 5 formed of filter plates, perforated tubes, glass or porcelain frits perforated porcelain or porous stone. The liquid is supplied by a pipe 2 behind a wall 3 and is discharged through a pipe 9. Air under pressure is supplied to the space below the partition 5. Fig. 2 shows apparatus in which the liquid supplied through a pipe 12 rises through a bed 13 of burnt pyrites and is discharged by gutters 15. As shown in Fig. 3, liquid and air enter together through a pipe 23 and rise upward through a bed of burnt pyrites in a container 21, arranged in the settling compartment of an Imhoff tank. A bed of burnt pyrites may be arranged as a trickling filter in a closed chamber to which air under pressure is supplied, or from which air supplied at atmospheric pressure is withdrawn by suction through the filter. As shown in Fig. 5, the liquid flows in cascade over masses 37, 38, 39 of burnt pyrites.
Patent GB-1293086-A (GB)
Title: Steam, pneumatic or hydraulic rotary engine
Inventor: THOMSON JAMES TENNANT
IPC: F03B1/00
Filed: 1970-05-27
Abstract: 1293086 Turbines J T THOMSON 24 May 1971 [27 May 1970] 25362/70 Heading FIT A turbine for use with steam, gas or liquid comprises a rotor 9 having four peripheral pockets 10 to 13 into which working fluid is directed through eight equally spaced ports 1 to 8 from a pipe 15 surrounding casing 14. The latter is of cast construction divided into two halves bolted together at horizontal flanges. The pockets and ports are arranged such that every pocket is in communication with a port at all times. L-shaped, grooved, sealing pads, Fig.3 (not shown) are screwed within the pockets. Casing 14 is closed at its ends by covers (16, 17) Fig.2 (not shown) supporting bearings (27, 28) for rotor shaft 18. One end cover (16) supports a gear casing containing an oil pump driven by a pinion (33) on the end of shaft 18 for the supply of lubricant to the bearings. Oil coolers may be provided.
Patent GB-156353-A (GB)
Title: Improvements in or relating to electro-magnetic mechanisms applicable to telegraphic and like purposes
IPC: H01H51/22
Filed: 1919-10-18
Abstract: 156,353. Automatic Telephone Manufacturing Co., Ltd., and Smith, S. R. Oct. 18, 1919. Polarized relays.-In telegraphic relays and like instruments fur use in high speed signalling, the magnetic flux passing from one end of the armature to the other is reversed on the position of the armature changing. A U-shaped permanent magnet 1 has soft-iron plates 4, 5 secured to its limbs, on each of which are soft-iron cores 6 - - 9 carrying coils 10 - - 13. The magnet is suspended from a circular plate 25 supported on pillars 26 mounted nn the base-plate 27. Brackets depend from the plate and screws pass through them and through non-magnetic cross cores fixed to the limbs of magnet 1. The armature 14 is pivoted on pins carried by the ends of these screws, and has contacts 21 at one end to engage fixed contacts 22, 23. The coils on the polepieces are so arranged that current in one direction increases the flux in cores 6, 9 and decreases that in cores 7, 8. Both the polarizing and operating flux enter and leave the armature near its extremities. The magnet 1 is held in position by a spring 32 secured to the base-plate 27 and by an adjusting-screw 33, whereby it may be turned about the axis on which the armature 14 moves.
Patent GB-697888-A (GB)
Title: Improvements in or relating to apparatus for and methods of registering pulses
IPC: H04Q3/00
Filed: 1951-11-02
Abstract: 697,888. Automatic exchange systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 2, 1951 [Nov. 6, 1950], No. 25675/51. Class 40 (iv). [Also in Group XIX] A circuit for receiving or counting out pulses uses n relays for registering 2<SP>n-1</SP> pulses, operation of the last relay in the series changing over a pair of potentials normally used for changing from receiving to counting out. Reversal of contact i energizes winding A1, relay A locking up over winding A2. At the end of the impulse, B energizes and locks up. The second impulse releases A by short-circuiting both windings, the end of the impulse energizing C. The third impulse re-energizes A, the end of the impulse releasing B. The process continues as shown in Fig. 1 with relay A energized from the beginning of each odd to the beginning of each even pulse, relay B changing over after every odd pulse, relay C changing over after the 2nd, 6th, 10th, 14th pulse and so on. Relay E energizes after the eighth impulse and holds until both windings are short-circuited at the end of the sixteenth pulse when the circuit is back to normal. Operation of relay T (not shown) causes pulse relay I (not shown) to supply counting-out impulses. Modification. As an alternative the relays may be de-energized by counter-magnetization through the main winding by connecting the pulse contact to a potential between battery and earth.
Patent GB-1438224-A (GB)
Title: Contact elements
IPC: H01H1/025
Filed: 1974-06-10
Abstract: 1438224 Contact element RINGSDORFFWERKE GmbH 10 June 1974 [9 June 1973] 25723/74 Heading H2E [Also in Division C7] A contact element comprises graphite particles, preferred size range 0À01 to 0À15 mm., with a coating of metal, e.g. Cu or Ag preferably one tenth to one twentieth of particle size in thickness and 10 to 60% of weight of contact element, compressed to shape and heated in an inert or reducing atmosphere to at least partially sinter the metal coating. The metal preferably contains up to 1% by weight of one or more of the elements Cu, Al, Si, Mn, Fe, Zn, Mo, Ag, Cd, Sn or Pb and/or their oxides or sulphides to improve sintering. The coated particles may be mixed with carbon and/or graphite in powdered form and/or inorganic lubricant and polishing substances, e.g. molybdenum disulphide, cadmium sulphide and vitreous substances e.g. glass powder, as well as possibly metal powder, and/or a binder, e.g. a curable synthetic resin, prior to sintering. The metal coating may be applied by electroplating or electroless metallization or by vapourcoating in a fluidized bed.
Patent GB-324027-A (GB)
Title: Improvements in or relating to apparatus for recording and/or reproducing sound
IPC: H03G3/20
Filed: 1928-09-07
Abstract: 324,027. Round, H. J. Sept. 7, 1928. Thermionic amplifiers.-A process for recording sound consists in controlling the recording in such manner that the record made does not always correspond to the sounds to be recorded and making a record of the degree of control employed. The output of a microphone M is fed to an amplifier A which actuates means L, S for making a sound trace SR on a film F as shown in Fig. 1, and control is effected by a handle H which controls the output of the amplifier A and also operates a variable resistance V in series with a battery B and lamp L2 for making a record of the degree of control in the form of a trace CR on the film F. Automatic control means consists in the insertion in the amplifier A of a resistance R and auxiliary valve X which is controlled by an amplifier B fed from the microphone M as shown in Fig. 2. For ensuring that the control comes into operation a little early, delay means in the form of one of the following devices are inserted in the main sound 1 ine:-(1) A delay circuit comprising impedances and capacities inserted between the microphone and amplifier A, (2) a mechanical line in the form of a solid, liquid or gas, or (3) a telegraphone in which the delay occurs between the points at which the sound is impressed on and picked up from a moving wire. The first Provisional Specification describes also the application of the invention to broadcasting, in which a sound record is adapted to modulate a telephone transmitter and the control record is arranged to produce an auxiliary modulation on another wave length or on a note outside the limits of the sound modulation frequencies. The auxiliary modulation is used at the receiver to control the output.
Patent GB-732328-A (GB)
Title: Improvements in studs for athletic boots and shoes
IPC: A43C15/16
Filed: 1952-10-14
Abstract: 732,328. Making studs for athletic footwear. LILLIE, A. E. Oct. 14, 1953 [Oct. 14, 1952 ; Oct. 22, 1952], Nos. 25823/53 and 26523/52. Divided out of 732,255, [Group VII]. Class 83 (2). [Also in Group VII] The method of making the stud described in Specification 673,399 is modified in that the fluted part of the spike 1 is of greater depth than the dished disc 4 and, after their engagement, the under part of the spike is upset to form a head 7 and so consolidate the attachment. In addition to the tangs 8, peripheral teeth 9 are provided to improve the engagement between the stud and the sole.
Patent GB-1470735-A (GB)
Title: Servo positioning systems for magnetic disc recording
IPC: G11B27/28
Filed: 1975-06-18
Abstract: 1470735 Automatic position control INTERNATIONAL BUSINESS MACHINES CORP 18 June 1975 25871/75 Heading G3R In a system for positioning a transducer over a magnetic track on a recording disc, the transducer produces a data signal and a data-dependent position error signal. Each signal is passed through a respective variable gain amplifier, the gains of which are determined by the data signal, and multipliers are used to produce a servo error signal which is independent of the data signal. As shown in Fig. 2, three output connections a, b, c are made to a magneto-resistive transducer head 10 centred over a magnetic track. A differential amplifier 16 and low pass filter 20 produce a data signal D in response to outputs a and c, while a summing network, differential amplifier 18 and filter 22 combine all three outputs a, b and c to form a signal DS representing the product of the data signal and an error signal indicating departure of the head 10 from a central tracking position. Amplifiers 24, 26 have a common gain factor G, and the output of the amplifier 24 is squared in a multiplier 28 to form a signal G<SP>2</SP>D<SP>2</SP> which is maintained at a constant value K fed through a filter 30 to the gain inputs of the amplifiers 24, 26. A second multiplier 34 receives the outputs from the variable gain amplifiers 24, 26, and thus produces a signal G<SP>2</SP>D<SP>2</SP>S equal to KS and thus representing a data independent servo position error for use in centring the head. The multiplying circuits operate at high speed, while the effective division performed by the feedback gain control is done at a much lower speed.
Patent GB-1155772-A (GB)
Title: Improvements in Multistage Transistor Amplifiers
Inventor: BRIDGES DONALD EDWARD
IPC: H03G3/30
Filed: 1967-06-05
Abstract: 1,155,772. Automatic gain control in transistor circuits. DECCA Ltd. 14 May, 1968 [5 June, 1967], No. 25881/67. Heading H3T. In a multi-stage transistor amplifier which is resistance/capacitance coupled between stages and in which means are provided to vary in accordance with an automatic gain control signal the energization of a supply line 12 to which biasing resistors of each stage are connected, the arrangement is such that low frequency variations of the automatic gain control signal are communicated substantially equally to both sides of each coupling capacitor C3. In the embodiment, the collector load resistors R 2  and base biasing resistors R 3  are all connected to the common supply line 12, being separated by resistors R 4 , and the line 12 is fed from the output of a D.C. amplifier 17 fed from detector 15 via low-pass filter 16. A tuned stage 13 is interposed between the R/C coupled amplifier and the detector, the arrangement being intended as an I.F. amplifier and being such that instability due to phase-shifts around the loop circuit including the a.g.c. path is prevented.
Patent GB-861250-A (GB)
Title: Improvements in or relating to systems of photographic reproduction
Inventor: JAMES RAYMOND W
Filed: 1957-08-16
Abstract: 861,250. Photographic vesicular materials. KALVAR CORPORATION. Aug. 16, 1957. No. 25918/57. Drawings to Specification, Class 98(2) A film comprises a hydrophobic synthetic thermoplastic resin or mixture thereof with a light-sensitive gas generating agent dispersed therein. It may be exposed by contact or projection printing and then heated to soften the resin and expand the gas in the form of bubbles, resulting in a diapositive when on a transparent support or a copy of opposite sign with a coloured or black support. In Example 1 a mixture of a vinylidene chloride acrylonitrile copolymer and polymethyl methacrylate is dissolved in warm methyl ethyl ketone, with methyl alcohol as further solvent p-diezodimethylaniline is stirred in, and the product is coated on supports such as ethyl cellulose, paper or celluloid or formed into an unsupported sheet; and may be exposed with a mercury lamp, heated as between two steel plates and then cooled to form a permanent record. Example 11 replaces the diazo sensitiser of Example 1 by the corresponding ethyl derivative, and six further examples describe variously the use of polystyrene, chlorinated polyphenyl, vinyl chloride/acetate copolymer, vinyl chloride/ acrylonitrile copolymer, and vinyl-vinylidene copolymer as resins, all of them with reference to proprietary products. Numerous further polymers, copolymers, diazo sensitisers, solvents and supports are listed.
Patent GB-1281665-A (GB)
Title: Method of manufacturing a pinch seal in a quartz tube
IPC: H01J9/32
Filed: 1971-04-19
Abstract: 1281665 Sealing quartz tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [4 April 1970] 25930/71 Heading C1M The formation of a pinch seal 10 by pressure plates 7, 8 deforming a quartz tube between guides 3, is facilitated by these guides being withdrawn from the seal whilst the pressure plates 7, 8 are still engaged. The withdrawal may be by relative sliding movement between the guides and the pressure plates or the former may pivot outwards to free the seal.
Patent GB-237772-A (GB)
Title: Improvements in or relating to mining machines
IPC: E21C25/56
Filed: 1924-10-31
Abstract: 237,772. O'Toole, E. Aug. 13, 1924, [Convention date]. Coal-cutting machines.-A combined mining and loading machine comprises an endless conveyer the working strand of which travels in the same direction as the return strand of the cutter chain so that said strands co-operate in conveying the mined material. The conveyer flights are pivoted to the conveyer chain and are folded during the return passage of the conveyer chain to reduce the width of the machine. The machine frame comprises a base plate 2 mounted on transverse skids 10 and carrying along its front edge the supporting frame 9 of the cutter chain 17 and along its rear edge the supporting frame of the convayer chain; the frame may be made in sections, the sections being detachably connected at the rear by overlapping fingers 80 and pins 81, and at the front by overlapping recessed bars 82 and locking plugs 84, these connections giving limited flexibility vertically. The conveyer comprises a chain 27 with triangular flights 28 pivoted thereto, the flights carrying rollers 31 which, on the forward side of the conveyer, engage a channel beam 4 to hold the flights in working position; on beginning the return movement, the flights engage a bent portion 33 of a rear channel beam 3 and are folded over the chain, being returned to active position at the end of the return flight on engagement of the rollers with a cam plate 35. An inclined plate 8 covers the returning part of the conveyer. The delivery end of the conveyer is elevated to deliver direct to mine cars; at this end a vertically arranged bracket conveyor 72 is provided to lift material carried out by the cutter chain and deliver it through a shoot 72<a> tu the main conveyer. Casings 38, arranged along the rear of the main frame, contain worm gearing 40 driven through shafting 41 and driving screws 44 engaging nuts 45 carried by hydraulic roof-supporting jacks 46, whereby the machine is advanced to its work. The base plate 2 carries a motor B which drives the cutter chain through bevel gear. ing 49 and chain gearing 53<a>, and also, through reducing gearing 55, drives a shaft 56; the shaft 56 drives the feed-operating shafting 41 through a clutch, bevel gearing 57 and pinions, drives the main conveyer through a clutch, spur gearing 62, chain gearing 64, 71, and bevel gearing, and also drives the bucket conveyer 72 directly.
Patent GB-1061940-A (GB)
Title: Improvements in loom dobbies
IPC: D03D51/00
Filed: 1964-06-23
Abstract: A dobby has a manual pick finding device with a clutch in the drive mechanism between the loom and the dobby which is so arranged that it can only be engaged in that position of the dobby driving shaft relative to the loom crankshaft that it was in at disengagement of after an even number of full turns of the loom crank-shaft i.e. after an even number of picks.
Patent GB-1519399-A (GB)
Title: Holding device
IPC: B42F17/00
Filed: 1976-06-23
Abstract: 1519399 Book racks TOP SECRET Ltd 1 June 1977 [23 June 1976] 26046/76 Heading A4U A desk tidy device comprises a box 1 extending from which is a coiled spring strip 6 for retaining flat articles such as books. The box is divided by a removable wall 3 which may rest on a stepped base portion of the box to provide box portions of different depth. A tray 2 is integral with the box, and further boxes and trays may be provided. The spring strip may be moulded integrally with the box base of plastics material, or it may be attached to the base by a layer of adhesively secured baize.
Patent GB-1343933-A (GB)
Title: Method and apparatus for ultrasonic non-destructive testing
IPC: G01N29/26
Filed: 1971-04-19
Abstract: 1343933 Ultrasonic flaw detection STAHLWERKE PEINE-SALZGITTER AG 19 April 1971 [30 April 1970] 26239/71 Heading H4D A method of testing sheet or strip material comprises moving an ultrasonic test head back and forth over only the edge zone of the material at an angle to the direction of feed of the material past the test head. A support plate 12 is carried by fork arms 13a, 13b and rests against moving strip 2 on rollers 19. The fork arms are pivoted to a fixed support 17 by pin 16 and rollers 18 on the plate 12 is urged against the edge of the strip by springs 14. The plate carries a motor 10 which drives a rod system 7, 8 through crank system 9 to oscillate transducer la above, and 1b (not shown) below the strip, perpendicularly to the direction of feed of the moving strip 2. The transducers shown operate in a through transmission mode and alternative embodiments may utilize transducers on the same face of the strip angled towards each other or single transmit-receive transducers. A marking device may be used to indicate the true position of flaws in the material.
Patent GB-158077-A (GB)
Title: Improvements in or relating to wheels or the like for grinding and polishing
IPC: B24D9/02
Filed: 1919-10-27
Abstract: 158,077. Winsall, A. W., and Williams, C. K. Oct. 27, 1919. Wheels.-A grinding or polishing wheel, in which the abrasive covering is of tubular form and is detachably mounted on the wheel, comprises three segmental portions formed by radially dividing the wheel D at f and provided with a tapered bore adapted to fit the tapered spindle b, the segments being expanded to grip the abrasive cover x by screwing up the nut c. In order to limit the expansion, and to prevent the segments from falling asunder when removed from the shaft, the segments are formed at their end faces with recesses d in which are placed rings e retained in position by screws g, In a modification, the segments are mounted on a tapered boss carried by the spindle and formed with a screwed part adapted to receive a nut for expanding the segments. The outer surface of the wheel may be covered with a permanent layer of yielding material.
Patent GB-1287030-A (GB)
Title: System for controlling film motion
Inventor: BRADFORD ROBERT SPENCER
IPC: G03B1/42
Filed: 1970-06-01
Abstract: 1287030 Automatic control of speed and tension MINNESOTA MINING & MFG CO 1 June 1970 [2 June 1969 16 March 1970] 26367/70 Heading G3R [Also in Division G5] A sprocketed film transport system comprises supply and take-up reels 10, 11, means for forming a loop between them, a capstan 40 engaging the film in the loop and means for producing a periodic signal corresponding to the speed of the film, which is used to keep the speed of a capstan driving motor 41 constant. The system is used in apparatus for recording a video signal on the film by an electron gun 15 which scans in horizontal lines only, vertical scanning being produced by the movement of the film. There is one sprocket hole per frame. As shown, the loop is formed by a sprocket wheel 30 driven by a motor 86 whose speed is controlled by a photo-cell 83 which is variably obscured by a vane 82 attached to a dancer roller lever 80. The capstan is sprocketed and its motor shaft carries a transparent disc 50 having first marks 51 whose spacing corresponds to that of the sprocket holes and second marks 52 which are closer than the first. The marks are detected by respective photo-cells, signals from the first being compared in phase at 70 with frame sync. signals separated from the video signal. Any error is used, after filtering, to adjust the frequency of a variable oscillator 72 whose output forms a reference with which signals from the second photo-cell are compared at 74 and 75. If the frequency of these signals differs (e. g. during run-up) 75 activates a control 44 by which the capstan is controlled in response to signals from a tachogenerator 43, but if the frequencies are substantially equal control is effected by phase comparator 74, filtered at 77. An inertia wheel 45 smooths irregularities due to the sprocket teeth engaging the holes. In a modification Fig. 4, (not shown) the spacing of the second marks on the disc 50 corresponds to each line of the video scan, and fine control is effected by direct comparison with the line sync. pulses at 175. The capstan motor is switched to the frame comparison circuit 70 during run-up, and when synchronization is detected at 171 it is switched to the line comparator 175. In one alternative embodiment Fig. 5, (not shown) the sprocket holes are detected directly by a photo-cell 210 for comparison with the frame sync. signals at 70, and the capstan is not sprocketed so that the inertian wheel is dispensed with. In another alternative Fig. 6, (not shown) the loop forming sprocket 30 is also dispensed with, the loop being formed from idler wheels (250, 260) and maintained by two sets of dancer roller gear controlling the supply and take-up reels respectively.
Patent GB-431128-A (GB)
Title: Improvements in and relating to wireless apparatus
IPC: H03F3/28
Filed: 1933-09-25
Abstract: 431,128. Valve circuits. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Compagnie Francaise pour l'Exploitation des Procedes Thomson-Houston; 173, Boulevard Haussmann, Paris) Sept. 25, 1933, No. 26391. Void [Abridged as open to inspection under Sect. 91 of the Acts, March 24, 1934]. [Class 40 (v)] A thermionic valve A, Fig. 2, is coupled to a pushpull pair B, B1, by a pair of resistances R1, R2, one of which is directly connected to the cathode of the valve A. The anode supply P to the valve A may be connected between the resistances R1, R2. The valve A may be replaced by a diode detector for half wave detection, Figs. 3, 3a, (not shown) ; by a diode detector for full wave detection, Fig. 4, (not shown) ; by a grid-leak detector, Figs. 5, 5a, (not shown); by a pair of grid-leak detectors in push-pull, Fig. 6, (not shown) ; or by an anode bend detector, Fig. 7, (not shown).