baber/WOPTO huggingface dataset:
Patent GB-1014551-A (GB)
Title: Improvements in and relating to magnetic sound recording and reproducing heads
Inventor: SMITH HUBERT COLIN
IPC: G11B5/265
Filed: 1963-01-16
Abstract: 1,014,551. Magnetic recording, playback and erase heads. B.S.R. Ltd. Jan. 9, 1964 [Jan. 16, 1963], No. 1922/63. Heading G5R. A combination head comprises separate erase and record/playback electromagnets mounted in a common container and each comprising a laminated core in the form of an elongate loop with the polepieces at one end, the loop comprising two parallel limbs of which one extends linearly to its polepiece and, at the end of the loop, the other is off-set towards the linearly extending limb to bring the polepieces together, a bobbin assembly being provided on at least one of the limbs of each core. Referring to Fig. 3 the erase magnetic core 23 comprises a bundle of parallel laminations bent into a loop formed with pole-pieces 13 and 14; one limb is surrounded by a coil 28 on a former 29, the two ends of the coil and a centre tap being connected to terminals 4. The record/ playback core is similar but has coils 35 and 36 wound on formers 37 and 38 surrounding each limb; the coils are connected in series and the junction and the other two ends are connected to terminals 4. Thus the signal to be recorded can be supplied to one of the coils, which has a low impedance, whereas both coils in series may be used for playback. The polepieces extend through a disc like insert 12, of non-magnetic alloy, set in U-shaped body 5 bolted to a can 1, the body 5 and the can 1 being of high permeability low-loss magnetic alloy and serving as a magnetic screening enclosure. As shown in Fig. 7 the erase polepieces 50 may be wider, transverse to the tape, than the record/playback polepieces 51, and the polepieces may be offset with respect to the centre lines of heads 48 and 49 so that each head can support a tape over its whole width whilst operating on only one of four tracks on the tape. In the arrangement shown the two heads operate on tracks t1 and t3 and when the tape is reversed tracks t4 and t3 will be similarly engaged. The erase polepieces may be constructed as described in Specification 934,898.
Patent GB-735199-A (GB)
Title: Improvements in joints and terminations for electric cables
Inventor: BANKS JOHN
IPC: H02G15/188
Filed: 1953-01-22
Abstract: 735,199. Electrostatic screens for couplings; cable end sleeves. BRITISH INSULATED CALLENDER'S CABLES, Ltd. Jan. 21, 1954 [Jan. 22, 1953], No. 1930/53. Classes 36 and 38 (1). A stress cone for use in a cable joint or termination is formed by rolling layers of paper interleaved with staggered electrodes 13 ... 15 which are all connected together by a lapping of lead wire 6 which also serves for connection to the sheath or screening tape 4 of a cable 2, either directly or (as shown) by means of a metal foil cylinder 9. In the case of a cable joint, the outermost electrodes 15 of the cable ends make contact with a metal cylinder surrounding the entire joint (Fig. 1, not shown). The clearance space between the core. and the outside of the cable is filled with insulating fluid.
Patent GB-304603-A (GB)
Title: Improvements in devices for viewing kinematographic films in motion
IPC: G03B1/38
Filed: 1929-01-21
Abstract: 304,603. Tideman, W., and Gildemeister, W. Jan. 21, 1928, [Convention date]. Kinematograph apparatus. - In apparatus in which the film is directly viewed, the gate is open at one side and its outer member is hinged or detachable. As shown, a wall a carries a sprocket b, driven by a maltese cross mechanism c, d, and transmission gearing &c. e. A circumferential wall i integral with the wall a encloses the sprocket b, and the sprocket teeth are arranged to project through slots in a curved part of the wall i. Dished covers g, h are carried by the wall i, and the edges of them form lateral guides for the film. The outer member l of the gate may be carried by a spring hinge m, supported at one end only, so that a film may be inserted laterally into the gate. The member l carries a lens tube n in alignment with viewing apertures in the wall i and in the member l. A modification is described in which the member l is channelled to form the lateral guides for the film; the member l may be detachable and held in place by springs. A loop q may be secured to the cover g to serve as a guide for endless films, and a foldable or detachable handle r may be provided.
Patent GB-537749-A (GB)
Title: Improvements in or relating to shaving devices
IPC: B26B19/38
Filed: 1940-02-02
Abstract: 537,749. Dry shavers. MARTIN BROS. ELECTRIC CO. Feb. 2, 1940, No. 2054. Convention date, Oct. 28, 1939. [Class 131] The shear plate 14 of a dry shaver is provided with lateral walls 16, side corrugations 17, curved portions 20 and cross walls 19 which are provided with slots 24 varying in width from one side to the other and arranged alternately as shown in Fig. 2. The walls 26 of the slots are inclined to provide sharp cutting edges to co-operate with the teeth 38 of the reciprocating cutter 35. The upper surface 22 of the cross wall is concave while the lower surface is plane to coact with the cutter. The narrow ends of the slots 24 terminate in grooves 27 and the upper surface 22 of the cross walls 19 are provided with steps 18 which act as combs for the hairs to be shaved. The shear plate is mounted in a head 10 preferably in a duplicate manner providing a channel 21 between the plates.
Patent GB-1525901-A (GB)
Title: Electrostatic water treatment apparatus
IPC: C02F1/46
Filed: 1977-01-19
Abstract: 1525901 Electrostatic separator PROGRESSIVE EQUIPMENT CORP 19 Jan 1977 [20 Jan 1976] 02082/77 Heading B2J An electrostatic water treatment apparatus for removing mineral and biological materials therefrom, comprises an electrode 1 having a dielectric coating 2 thereon, for immersion in the water to be treated, the electrode 1 having at least at one end, an end cap 5 or 11 telescoped over its end and sealed by means of an O-ring seal in a water-tight manner thereto. As shown, the upper end cap 11 has an O-ring seal 8a, 13, an aperture 14 venting the interior of the hollow electrode 1 to the atmosphere with a coupling 15 mounting the cap and electrode within a grounded shell 3, which may form the water pipe. Lower end cap 5 is similar to end cap 11 except that it has no aperture and is sealed to the shell 3 by a welded cover 10. In another arrangement, Figs. 5-8 (not shown), the treatment apparatus is inserted in existing piping and has a similar end cap and seal at each end of the electrode, with the venting passage provided via one of the centering spiders provided at each end to centre the electrode within the pipe.
Patent GB-1215378-A (GB)
Title: Thickened slurried inorganic oxidizer-alcohol-water-explosive mixtures
Inventor: BRONSTEIN JESSE B
IPC: C06B47/14
Filed: 1968-01-15
Abstract: 1,215,378. Explosive compositions. COMMERCIAL SOLVENTS CORP. 15 Jan., 1968, No. 2120/68. Heading C1D. An explosive slurry, which is detonatable by a primer under confinement, comprises a mixture of an inorganic oxidizer, an aliphatic alcohol having 1-4 carbon atoms, water, and an alcohol thickening agent. The inorganic oxidizer may be ammonium nitrate, Na, K, Ca, Mg, Sr, or Ba nitrate, Na, K, or Ba chlorate or perchlorate, Ca perchlorate, or mixtures thereof. The alcohol may be methanol, ethanol, n-propanol, isopropanol, isobutanol, butanol-1, butanol-2, or tertiary butyl alcohol. Suitable thickening agents are methyl hydroxypropyl guar gum and polyoxyethylene glycols and glycol ethers. A sensitizing explosive may also be present, e.g. nitrostarch, TNT, DNT, PETN, trimethylolethane trinitrate, pentolite, cyclonite, nitrocellulose, composition B, cyclotol, tetryl, and smokeless powder. The pH of the slurry is preferably below 4 or above 7; to adjust the pH, the following may be added: nitric, sulphuric, hydrochloric, phosphoric, trichloracetic, sulphonic, sulphinic, or formic acid, urea nitrate, urea chloride, pyridine hydrochloride, sodium, ammonium or potassium hydroxide, sodium triphosphate, sodium monohydrogen phosphate, sodium metaborate, sodium tetraborate pentahydrate, potassium carbonate, sodium acetate, or calcium hydroxide. Particulate Al or Al-Mg alloy may be included as a metal fuel; Al may be coated with a silicone resin or PTFE; other additional fuels referred to are ferrosilicon, beryllium, lithium, boron, powdered coal or coke, petroleum oil, charcoal, bagasse, dextrine, starch, wood meal, flour bran, and pecan meal. ZnO, CaCO 3 , Al 2 0 3  or Na 2 CO 3  may be added as antacid or stabilizing material. The explosive composition may be mixed close to the point of use and pumped into blast holes.
Patent GB-228337-A (GB)
Title: Improvements relating to frequency meters for electric currents
IPC: G01R23/02
Filed: 1924-01-26
Abstract: 228,337. Cheetham, G. A., and Metropolitan-Vickers Electrical Co., Ltd. Jan. 26,1924. Frequency, measuring.-In an induction meter, having two electromagnets 2, 3 acting in opposition on the movable member and connected respectively through a resistance 6 and inductance 7 to the circuit under test, a condenser 8 is placed in series with the inductance and electromagnet 3. Preferably the condenser has such a value that resonance occurs at a frequency near the normal frequency of the circuit. For instance, the normal frequency of the circuit may be 60 cycles, and the resonance frequency 80 cycles. The instrument thus has a very open space in the region of normal frequency. Specification 16342/10 is referred to.
Patent GB-900220-A (GB)
Title: Improvements in or relating to hydraulic buffers or drawgear
Inventor: MAX HUBERT PROPHET ALEXANDER L
IPC: B61G11/12
Filed: 1958-01-22
Abstract: 900,220. Vehicle buffers or draw gears. MEBOE Ltd. Jan. 20, 1959 [Jan. 22, 1958], No. 2190/58. Class 103(5). A vehicle buffer or draw gear comprises a rubber spring 7, Fig. 1, in series with a hydraulic piston 1. In the embodiment of Fig. 3 a softer spring 7 is housed within a cup 15, and a rear rubber spring 14 is provided. An auxiliary cup 16 and a plate 12 provide limit stops for the cup 15 and the plunger 4 respectively.
Patent GB-1358026-A (GB)
Title: Mass measuring system applied to belt conveyors
IPC: G01G11/04
Filed: 1973-01-16
Abstract: 1358026 Measuring mass electrically MERRICK SCALE MFG CO 16 Jan 1973 2226/73 Heading G1N A mass measuring system applied to a belt conveyor comprises a pair of stringers 11 supporting an endless belt conveyor, a pair of eccentrics 13 being rotatably supported at 14 by the stringers, and an electric motor 19 independently supported and connected by a belt 27 to the shaft 14, so that rotation of the shaft 14 and hence of the eccentrics 13, causes vibration of the stringers at a resonant frequency dependent on the load on the conveyor. Two coils 29, 32 are responsive to the vibration of the stringers and the rotation of the motor respectively, and produce signals which are ideally 90 degrees out of phase. The signals are compared in a phase-sensitive network 36 whose output controls an S.C.R. speed controller 37 for the motor 19 to maintain the phase shift and resonance. A tachogenerator 38 measures the motor speed, the output being fed to a potentiometer 40 which also receives a signal indicative of the belt speed, so as to derive by means of an integrator, a measure of load per unit time. Reference is made to Specifications 1161952, 1243743 and 1325859.
Patent GB-617860-A (GB)
Title: Improvements in and relating to method of filtering by the use of ice particles
IPC: B01D39/06
Filed: 1944-10-17
Abstract: A filter for solid matter, e.g. fruit pulp, contained in a liquid the freezing point of which is lower than that of water comprises discrete particles of ice maintained at a temperature below 0 DEG  C. The filtrate is recovered by melting the ice.  The ice particles may be contained between sheets of screen cloth and the liquid filtered upwardly.  Specification 617,776, [Group VI], is referred to.ALSO:Solid matter such as fruit pulp contained in fruit juices which have been concentrated by freezing as described in Specification 617,776 is separated by passing the liquid through a filter bed comprising discrete particles of ice maintained at a temperature below 0 DEG  C.  The filtrate is recovered by melting the ice.
Patent GB-113960-A (GB)
Title: Products containing beta-Alumina and Processes of Preparing the same.
IPC: C01F7/02
Filed: 1918-02-07
Abstract: 113,960. Norton Co., (Assignees of Saunders, L. E., and White, R. H.). March 2, 1917, [Convention date]. Alumina.-An abrasive containing a material proportion of # alumina (a crystalline form of alumina differing from that occurring in nature as corundum, sapphire, ruby, &c.) is prepared by fusing alumina in an electric furnace in the presence of a converting-agent such as sodium carbonate, aluminate, sulphate, and hydrate, and sodium, potassium, and lithium compounds generally. The alumina is preferably substantially free from acid oxides, such as silica and titanium oxide, which have a tendency to inhibit the production of #-alumina. The product is obtained in the form of a pig or mass, and may be crushed, and the resulting grains may be bonded with ceramic material, vulcanite, &c. The proportion of # alumina in the product may vary from say 10- per cent of the alumina present up to practically 100 per cent, in accordance with the quantity of converting-agent used. Specifications 118,591 and 118,592 are referred to.
Patent GB-579319-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J21/36
Filed: 1942-02-23
Abstract: 579,319. Discharge apparatus. LIEBMANN, G., and CATHODEON, Ltd. Feb. 23, 1942, No. 2342. [Class 39 (i)] In an ultra-high frequency tube the cathode and next nearest grid or anode are closely spaced by a hollow cylindrical spacer. The electrodes project into the spacer so that it surrounds the discharge space but lies outside it. Preferably, the spacing is less than 5 Î 10<-3> cm. and the current density in the discharge is greater than 0.1 amp./cm<2>. In a diode, the cathode 7, Fig. 1, and anode 9 project into the spacer 10 which engages shoulders 11, 12. The spacer 10 by itself brings the electrode surfaces into contact, but an auxiliary spacer 13 accurately ground to the desired electrode separation is interposed to give the required separation. The cathode is secured by band 8 to a ring 6 screwed into a nut 5 ; the anode and the nut 5 contact opposite faces 2, 3 of a resonator extending outside the envelope. In a modification, the electrodes are truncated cones and fit against conical faces on the spacer. Holes are made in the electrodes or spacers to facilitate exhaustion. In a triode, grid 29, Fig. 3, and cathode 25 are similarly supported within spacer 31, the cathode being pressed thereon by spring 39. The anode 24 is spaced from the grid by a spacer 34. Discs 21, 22, 23 connected to the electrodes pass out through the wall of the envelope to input and output resonators 45, 44. To prevent the lowering of the surface insulation of the spacers by deposited metal, the surface may be roughened, 'and narrow gaps 32, 33 are left between the electrodes and the ends of the spacer. The invention is also applicable to cathode-ray tubes.
Patent GB-289530-A (GB)
Title: Means for supplying direct current of predetermined voltages from a supply main
IPC: H02M1/10
Filed: 1927-01-27
Abstract: 289,530. British Thomson-Houston Co., Ltd., Clinker, R. C., and Wadsworth, T. Jan. 27,1927. Supplying consuming devices.-A potentiometer r supplied through a smoothing circuit c, d has its tapping points connected to jacks J<1> - - J<4> so arranged that when any plug, supplying for example a thermionic valve, is removed from its jack, a substitutional resistance r<1> - - r<4> is inserted in circuit so as to maintain constant the current distribution in the potentiometer r, and therefore the voltage across the various tappings.
Patent GB-600739-A (GB)
Title: Improvements in or relating to disazo dyestuffs and pigments
IPC: C09B35/08
Filed: 1943-04-21
Abstract: Disazo dyestuffs and pigments are manufactured by tetrazotizing a mixture of isomeric diaminodiphenyls and coupling with a coupling component.  In examples, a mixture consisting mainly of 2 : 21- and 2 : 41-diaminodiphenyl, produced by the process of the parent Specification, is tetrazotized and coupled with: (1) acetoacetanilide; (2) acetoacet-o-chloranilide; (3) acetoacet-o-toluidide; (4) 1-phenyl-3-methyl-5-pyrazolone. The products are yellow to orange pigments which may be dispersed in oils or oily vehicles or solutions of synthetic or natural resins to form inks or paints.  Reference is made to the coating of the particles of the product of (1) with resin prior to separation thereof by filtration.  Samples have been furnished under Sect. 2 (5) of dyestuffs prepared by tetrazotizing the product of Example (1) of Specification 600,703 and coupling with: (I) resorcinol; (II) a -naphthylamine and H-acid; (III) G-acid.
Patent GB-483169-A (GB)
Title: Improvements relating to punching tools for perforating paper and other thin sheets
IPC: B26F1/14
Filed: 1937-01-29
Abstract: 483,169. Perforating paper &c. PHILLIPS ENGINEERING CO., Ltd., and BROOKE, N. Jan. 29, 1937, No. 2614. [Class 31 (ii)] [Also in Group XXII] In a device for perforating paper and other thin sheets, the die plate k with which the reciprocatory punches a co-operate has punch holes l, means for positioning it in the device, and a renewable perforated shim r secured over the holes l. The shim may be soldered in position and perforated by the punches a on the first descent of the head b. The plate k is positioned on a base m by pins o, waste material being received in a cavity x. A spring-pressed stripper plate h is provided.
Patent GB-388551-A (GB)
Title: Improvements in and relating to sliding doors
IPC: B60J5/06
Filed: 1932-01-29
Abstract: 388,551. Sliding doors for vehicles. SUNSALOON BODIES, Ltd. and PEARSON, D. A., Castleford Road, Sparkhill, Birmingham. Jan. 29, 1932, Nos. 2657 and 8447. [Class 103 (ii).] The track h, Figs. 1 and 2, of a sliding door d, such as the door of a passenger vehicle, is formed with depressions j or gaps in the path of the supporting rollers a, the arrangement being such that the weight of the door is taken by pads g when the rollers are in the recessed or gapped portions of the track. In the form shown, each roller a consists of a hardened steel ring mounted around a roller bearing carried by a pin b. The pins b are fixed to brackets c which are secured to the door and interconnected by a bar e. An angle strip f is provided at each end of the bar and to each strip is fixed the load-taking device g consisting of a pad of waxed or oil-impregnated canvas, fibre, leather, or the like. The pads are normally clear of the lower edge of the track but drop slightly with the door to engage frictionally with the track when the rollers register with the recesses or gaps. The pads g may be connected to shoes by parallel links so that the door and rollers are raised on to the track when moved from the position of rest. To prevent the door from jumping when in this latter position, a spring blade may be fixed to the track above each recess j ; alternatively a spring plunger may be employed. A guide rail k, Fig. 7, is secured to the lower edge of the door and runs in a channel guide n. Spring clips m are arranged at intervals around the channel and provide a resilient guide for the rail. The latter may be thickened or deformed at intervals in order to provide a more rigid grip when the door is supported on the pads g. In one modification, the clips are mounted on the door and the guide rail is secured to the door frame.
Patent GB-254352-A (GB)
Title: Improvements in apparatus for the manufacture of lead oxide
IPC: C01G21/06
Filed: 1925-01-30
Abstract: 254,352. Waring, H. Jan. 30, 1925. Lead oxide. - The agitator shaft B of a lead oxide pot, which may be of the kind described in Specification 15664/12, is passed loosely through the sides A of the pot so as to leave a clearance a all round, and air or steam or both is forced in around the shaft. A box D is secured over the opening, the shaft passing loosely through the cover F, but an airtight joint being made at the point by a leather or rubber washer f. Air or steam or both is forced into the interior E of the box D through an inlet e and passes thence through the space a around the shaft into the oxide pot so as to prevent any lead oxide escaping from the pot or choking the passage a. The agitator blades c distribute the air or steam in the pot by centrifugal action. The shaft B may carry a scraper or knife to detach any deposit in the opening a, the detached material being carried back into the pot by the entering air or steam. The invention may be applied to any of the known types of oxide pots, having horizontal, vertical, or inclined agitator shafts or reciprocating agitators.
Patent GB-225093-A (GB)
Title: Improvements in theft-preventing devices for motor vehicles
IPC: B60R25/04
Filed: 1924-02-01
Abstract: 225,093. Delepierre, A. Feb. 1, 1924. Guarding against unauthorized use.- A theft indicating attachment comprises an element such as a bar or grid, which is locked across the registration plate and is removed entirely therefrom after unlocking. The bar 3, Fig. 1, is formed with a hook 4 at one end and a fork at the other. A padlock 6 secures the bar in position with the book and fork engaging headed balls or rivets integral with or permanently secured in the plate. In the modification shown in Fig. 4, a tapering loop 8 replaces the hook. In a further modifica. tion a circular grid is employed. Specification 200,109 is referred to.
Patent GB-677288-A (GB)
Title: Improvements in and relating to racks for use in the manufacture of footwear
IPC: A43D117/00
Filed: 1950-02-02
Abstract: 677,288. Industrial shoe racks. CUNNING- TON, L. A. G., and LORETTA SHOE MODELS, Ltd. Jan. 24, 1951. [Feb. 2, 1950] No. 2711/50. Classes 52 (ii) and 52 (iii). A factory rack for shoes, intended to be carried past operatives by a conveyer, comprises a frame with a series of supports h between which the shoes are placed, a tray e for work-pieces being provided beneath the supports. The racks are preferably double-sided and the supports are inclined upwardly toward the operators on each side of the conveyer. When out of use the racks can be stacked in nested formation.
Patent GB-230234-A (GB)
Title: Improvements in the application of sheet glass to metal and similar frames of vehicles
IPC: B60J10/04
Filed: 1924-02-02
Abstract: 230,234. Thompson, W. M. Feb. 2, 1924. Glazing; window frames. -The glass panes of wind screens and other parts of vehicles, or for other metal frames intended to withstand vibration, are secured in a U-shaped frame by means of a resilient bowed strip d engaging the edge of the glass and the frame. The edges d<5> of the strip may be bent outwardly and reinforced by wire &c. d<6>. A resilient strip e may be interposed between theglass and the strip d.
Patent GB-1396621-A (GB)
Title: Pressure reducer
IPC: F16K39/02
Filed: 1973-01-18
Abstract: 1396621 Valves BRAUKMANN ARMATUREN AG 18 Jan 1973 [21 Jan 1972] 2746/73 Heading F2V In a pressure reducing valve having a spring- biased to open closure member 22, Fig. 1, and a diaphragm 7 subjected to downstream pressure via pasaage 38 and chamber 37 to move the valve member towards its closed position, an annular constriction 33 is provided upstream of the closure member to increase the speed of flow thereat and thereby reduce the pressure in a chamber 42 containing a piston 21 provided to balance the pressures acting on the closure member. Thus the static balancing pressure in chamber 42 is reduced to a value more representative of the associated static pressure acting on the closure member when the latter is open and some of the static pressure thereat is lost to kinetic energy. The lower end of tube 34 may be outwardly flared, Fig. 2 (not shown), or the inner surface of the lower end of housing part 24 may be chamfered to a much greater degree than that shown in Fig. 1.