baber/WOPTO huggingface dataset:
Patent GB-749581-A (GB)
Title: Improvements in and relating to planting-machines
Filed: 1952-08-14
Abstract: 749,581. Transplanting machines. NICHOLSON, A. C., and RAYNER, J. Oct. 29, 1953 [Aug. 14, 1952], No. 20513/52. Class 6 (1). A transplanting machine, having furrow openers 1 (Fig. 1) and soil-pressing wheels provided with means for intermittently operating a water-control valve, is characterized in that studs 29 on the presser-wheels 28 operate a rocker which, in one direction, actuates the valve and in the other moves idly to permit the studs to pass so that the machine may be backed without damage to the valve. The valve is actuated by a rod 37 pivoted to a link 33 freely rotatable on a spindle 31 which carries integrally a trigger 30 engageable by the studs 29 and a cam 34 having a lug 36 which presses against a corresponding lug 35 on the link. Reverse movement of the machine causes these lugs to separate. The furrow-openers have prow-like surfaces which ride over obstructions 2 and are mounted on spring-loaded arms 6 pivoted to the main frame 8, 125. Adjustable stops, 17 or 23, limit the maximum penetration of the tools. The rear-end of the frame carries track-eliminators 72 mounted on arms 78 pivoted to the frame and comprising flat blades adjustable in all directions. The frame carries ground-wheels in addition to the presser-wheels and is supported on the power-operated hitchlinks of a tractor. The Provisional Specification refers to Specification 652,938.
Patent GB-353663-A (GB)
Title: Improvements in and relating to abrasive tools
IPC: B28D1/04
Filed: 1930-07-07
Abstract: An abrasive cutting tool comprises a shank portion to which is secured a cutting portion consisting of a mixture of sintered hard tough metal particles and a soft binder metal cementing the particles together, the superficial binding metal being removed to expose the cutting edges of the hard particles.  The binding metal may consist of 48 per cent of copper, 47 per cent of silver, and 6 per cent of cobalt.
Patent GB-694167-A (GB)
Title: Improvements in or relating to the extrusion of metals and alloys
IPC: B21C29/00
Filed: 1949-08-08
Abstract: On leaving the die, an extruded metal or alloy product is heated so that it is retained at a temperature above the recrystallization temperature long enough for the temperature and structural constitution of the body to become substantially uniform.  The temperature is between 400 DEG C and 500 DEG C for aluminium alloy and between 400 DEG C and 600 DEG C for brass.
Patent GB-391654-A (GB)
Title: Improvements in spring assemblies for mattresses, cushions and the like
IPC: A47C23/053
Filed: 1932-07-21
Abstract: 391,654. Spring upholstery. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(Burton-Dixie Corporation; 2024, South Racine Avenue, Chicago, U.S.A.) July 21, 1932, No. 20654. [Class 52 (iv).] The end coils of upholstery springs arranged in staggered rows are connected by waved wires 14 with offset loops 15 which are wrapped around straight parts of the spring coils 12 to form a sequence of hinge connections alternating between the adjacent rows.
Patent GB-1316022-A (GB)
Title: Measuring vessel for photometric analysis of a liquid
IPC: G01N21/05
Filed: 1971-04-19
Abstract: 1316022 Sample cells REDERI A B NORDSTJERNAN 19 April 1971 [30 Jan 1970] 20695/71 Heading G2J A measuring vessel is divided into two parts 1, 2 by a vertical partition with two connections 3, 4 between the parts 1, 2, with means for generating or introducing a gas in the part 2 which has means to allow the gas to escape from that part, the part 1 being adapted for the photomeric analysis of the liquid therein.
Patent GB-1309725-A (GB)
Title: Blackening method
IPC: C23C8/10
Filed: 1971-04-19
Abstract: 1309725 Blackening iron articles NORTHERN METAL PRODUCTS Inc 19 April 1971 [2 Feb 1970] 20774/71 Heading C7U A method of blackening iron-containing articles comprises treating them in an oxidising zone at an elevated temperature with an oxidising gas comprising a gaseous product of air combustion of a hydrocarbon fuel, free oxygen, and steam. The gas contains at least ¢% by volume of oxygen, at least ¢% by volume of added steam, and 2-7% by volume of combustible gas (carbon monoxide and hydrogen). The steam content is less than an amount which could cause condensation on the articles in the coolest portion of the zone. The elevated temperature is 1100-1200F., and the articles are cooled to less than 300F. before leaving the zone. Fig.1, shows articles 12 entering a furnace through stainless steel curtains 17ad, being heated by elements 19, treated by gas supplied through pipes 26, 28, and cooled in a cooling chamber 29.
Patent GB-625403-A (GB)
Title: Improvements in multiphase electrodes
IPC: F24H1/10
Filed: 1947-07-31
Abstract: 625,403. Multiphase electrodes. STEEN, C. A. July 31, 1947, No. 20838. [Class 39 (iii)] A substantially cylindrically shaped multiphase electrode for boiling pans &c. is formed by bending and interleaving two or more strips of metal in a manner such as is illustrated, for example, in any of the figures. Figs. 2, 3 and 4 illustrate typical three phase electrodes. The six phase electrode illustrated in Fig. 5 has three equally spaced electrodes connected to the supply for half, loading and opposite electrodes additionally inter-connected for full loading. Alternatively, in this latter electrode, the three said electrodes may be connected to one pole and the remaining three electrodes to the other pole of a single phase supply. Each single electrode has a radial plate 9 formed with an aperture 10 by which the electrode is fastened to its supply pin.
Patent GB-618529-A (GB)
Title: Improvements in or relating to unloading compressors
IPC: F04B39/16
Filed: 1946-07-12
Abstract: 618,529. Unloading compressors. ETABLISSEMENTS MERLIN & GERIN. July 12, 1946, Nos. 20852 and 20853. Convention dates, Aug. 4, 1944, and Jan. 12, 1945. [Class 8 (i)] In an air compressor unloading device of the kind which is controlled automatically according to the compressor speed and comprises an air intake manifold 1 and an atmospheric air valve 12 having operating means therewith, the valve operating means and hence the valve 12 is controlled by the partial vacuum in the intake manifold 1. The valve operating means comprises a piston 7 dividing a cylinder 6 into lower and upper compartments, the latter being connected to the intake manifold 1 by a duct 5. On starting the compressor, the valve 12 is maintained open by the weight of the piston 7 to vent the delivery duct 8 and a condenser 9. When full compressor speed-is attained, the vacuum in the manifold 1, the duct 5 and upper cylinder space suffices to raise the piston 7 and valve 12 to its closed position. A needle valve controlling flow of atmospheric air to the lower cylinder space may retard closing of the valve 12, and a truncated conical end of the duct 5 may serve to regulate the manifold vacuum.
Patent GB-1473581-A (GB)
Title: Data processing systems
IPC: G06F13/18
Filed: 1974-05-13
Abstract: 1473581 Data processing system SIEMENS AG 13 May 1974 [21 May 1973] 21019/74 Heading G4A In a data processing system in which a plurality of peripherals are connected via an I/O processor and a store control unit to a central store and a central processor is connected to the I/O processor and store control unit, requests, including interrupt masking commands and I/O commands emitted by the CPU to the I/O processor and interrupt and data requests emitted by the peripherals to the I/O processor, are processed in accordance both with their type and their source to determine which is to be executed. Requests for access to the central store from the I/O processor and the central processor are processed in accordance with the source of and type of request and the nature of the previous granted request to determine which is to be executed. Interrupt requests requiring action by the CPU and data requests requiring access to the central store from the peripherals are received by a decoder D1 which sets a register AR1 for interrupt requests and register AR2 for data requests, one bit per peripheral in each case. The registers AR1, AR2 are masked by registers M1, M2 which may be set by mask commands from the CPU or from a circuit within the I/O processor and the requests forwarded to a priority network PR, which emits the number of the highest priority peripheral, any interrupt requests overriding any data request by signal SO5 at gate U4, lower numbered peripherals having priority. I/O commands from the CPU are received by decoder NR which emits the number of the requested peripheral. The following priority scheme is used. Mask commands always take priority. Interrupt requests take priority over data requests (see above), the highest priority one of the latter being executed only when no interrupt requests or I/O or mask commands are present. I/O commands and interrupt requests have similar priority in that an I/O command is executed when no interrupt request is present or when the highest priority interrupt request relates to a lower priority or the same priority peripheral as the command. If the highest priority interrupt request relates to a higher priority peripheral than the command, the request is executed. The CPU and I/O processor may both make access requests to the central store. The requests A1, A2 from the two units, two status bits Q1 and Q2 indicative of the nature of the requests from the two sources, and two bits from the selection device indicative of the nature of the previously granted access, are fed to the selection device which may be a read-only memory, to produce an output indicating which, if any, unit is given access and the two bits indicative of the nature of the granted request.
Patent GB-1532155-A (GB)
Title: Cutting out parts from workpieces
IPC: H05K3/00
Filed: 1977-05-19
Abstract: 1532155 Workpiece clamping, copying EXCELLON INDUSTRIES 19 May 1977 [15 Nov 1976] 21081/77 Headings B3B and B3K In a routing operation in which a part 22 is machined from a larger plate 18 (or a plurality of parts 22 from a stack of plates 18) which is held positionally by tooling pins 23, and in which, when the routing tool 17 is approaching its initial start position with very little material left to be machined in the path 134 and the part 22 then tends to move laterally causing an incomplete removal of material from the edge of the part, there is provided a clamping means which comes into operation at the final part of machining to prevent the cut-out part 22 from moving.  A vertically movable spindle head 11 is lowered at the start of machining by a pivotable arm 12 and pneumatic jacks 26 force down a clamping head 24 to engage the plate 18 with a first pressure whereby a low-friction ring 87 engages the plate 18 and slides relative thereto as the path 134 is machined. As the cutter approaches the start position the jacks 26 are pressurized at a higher pressure to collapse spring 89, 92 to engage a high-friction ring 74 with the plate 18 and part 22, and simultaneously a pin 95 is retracted to allow a slide plate 59 which carries the rings 87, 74 to move laterally relative to the spindle as the final part of the path 134 is machined away. The slide plate 59 can only move relative to the spindle a limited amount, and is biased to a centre position by at least four springs, e.g. 110, 113. Cuttings are removed from the head 24 by a suction pipe 37.
Patent GB-918526-A (GB)
Title: Improvements in or relating to brushes
Inventor: DEAR ALEXANDER THOMAS CAMERON
IPC: A46B13/00
Filed: 1958-07-02
Abstract: 918,526. Brushes. LEWIN ROAD SWEEPERS Ltd. May 25, 1959 [July 2, 1958], No. 21131/58. Class 19. Bristle tufts 17 are clamped in sockets 18 of the stock 10 of a rotatably driven, guttersweeping brush of a road-sweeping machine by the root portion of each tuft being engaged by a clamping member, preferably a grubscrew 19, that presses the root portion of the tuft towards a recess 20 formed in the side wall of the socket opposite the clamping member to cause part of the root portion to be deformed into the recess. The tuft-engaging end of the screw may be flat or conical and each tuft may be partially encased in a rubber sleeve. The sockets are formed in an annular flange 16 integral with and disposed at an angle to the axis of rotation of the stock 10. If the sockets extend through the flange the upper ends of the sockets can be covered by a disc 21 bolted to the top of the stock.
Patent GB-677648-A (GB)
Title: Improvements relating to electrical fuses
IPC: H01H85/24
Filed: 1949-08-15
Abstract: 677,648. Fusible cut-outs. SANDERS & CO., (WEDNESBURY), Ltd., W., BAYLISS, G. H., and MANION, E. B. Oct. 10, 1950 [Aug. 15; 1949], No. 21144/49. Class 38 (i). In a fuse assembly having fuses of different ratings or characteristics and fixed contacts which are screened by a shield 10 provided with openings through which the carrier contacts are inserted, the openings are surrounded by ribs 11 of a configuration conforming to the shape of the carrier bases A1, A2; A3, and having a gap 11a or gaps 11b, 11e which will receive a projection 12a on the carrier A1 or the projections 12b, 12c on the carriers A2, A3, respectively, so that only the correct carrier can engage a specified set of fixed contacts. Preferably the height of the ribs is such that, if the incorrect carrier is inserted, the projections 12a, 12b, 12c abut the top thereof and prevent the carrier contacts 13 reaching the fixed contacts. Alternatively projections 15a, 15b, 15c from the shield near the openings engage corresponding recesses 16a, 16b, 16c in the carriers. In a still further modification, the carriers have projections to engage complementary apertures in the shield. Specification 621,316 is referred to.
Patent GB-574036-A (GB)
Title: Improvements in sound reproducing apparatus
IPC: G10K11/02
Filed: 1943-12-17
Abstract: 574,036. Sound reproducing apparatus. WESTERN ELECTRIC CO., Inc. Dec. 17, 1943, No. 21190. Convention date, Dec. 30, 1942. [Class 13] [Also in Group XXXIX] Wide range sound reproducing apparatus for cinemas has separate high- and low-frequency loudspeakers with horns, the high-frequency speaker having its horn effectively extended by a conduit which is sub-divided into a plurality of passages of small cross-section compared with the wavelength at the highest frequency to be transmitted, the original waveform being reformed at the mouth of the conduit and the sound from both speakers being delivered at substantially the same plane. In the construction described the conduit 11 is of rectangular cross-section and formed of plywood strips lined with a thin sheet of soft gum rubber enclosing a plurality of square aluminium tubes 17 bedded at their corners in rubber strips 18. The tubes are all of the same length but have their ends curved to conform to the wavefront of the acoustic wave delivered from the high-frequency horn. If desired, the conduit or the horn may be curved to fit into the space available and the passages within the conduit may be of differing lengths to afford a non-uniform field distribution. Preferably the length of the conduit is chosen so that the air paths of the horns are equalised to within one half-wavelength of the cross-over frequency.
Patent GB-1311050-A (GB)
Title: Method and apparatus for clearing a blocked tuyere
IPC: F27D3/15
Filed: 1971-04-19
Abstract: 1311050 Clearing blocked tuyeres NIPPON KOKAN KK 19 April 1971 [13 Feb 1970] 21250/71 Heading F4B A blocked tuyere 3, is cleared using a boring apparatus located in a water cooled nozzle 1 for leading fluid to the tuyere, the apparatus including a horizontally movable valve 8 capable of blocking off the tuyere 3, and an independently horizontally movable and rotatable boring means 11 projecting through the valve 8. The valve 8 is secured to a driving tube 7 and the boring means 11 to a shaft 10 concentric with the tube both being drivable by means 9. In operation, with valve 8 closing the tuyere 3, fluid at a higher pressure than the pressure in the furnace is supplied to nozzle 1, means 11 is rotated and advanced to clear the blockaging material 18, the valve 8 and the means 11 are retracted and the fluid is passed through tuyere 3 into the furnace. The fluid may be reducing gas, nitrogen or air possibly carrying a powder suspension, and the furnace, a blast furnace, cupola or other shaft or industrial furnace.
Patent GB-614593-A (GB)
Title: Improvements in or relating to compositions for use in margarine
IPC: A23D7/01
Filed: 1946-07-16
Abstract: A composition made by mixing a vegetable phosphatide with about 0.1 per cent to 1.0 per cent of a protein by weight of the phosphatide-protein content in the presence of a liquid solvent for the protein is incorporated in margarine, e.g. in the proportion of 0.1 per cent to 1.0 per cent by weight, for rendering the margarine non-spattering, the composition being incorporated if desired during manufacture of the margarine by dissolving either in the melted fat portion or in the aqueous portion.  Examples describe preparation of the composition from soya lecithin and an aqueous solution of enzyme-hydrolyzed sodium globulinate of soya bean made in accordance with U.S.A. Specification 2,381,407, and from commercial soya lecithin and zein or 1 per cent fat soya bean flour, with aqueous sodium hydroxide solution, and, if desired, with glycerol and bleaching by hydrogen peroxide.
Patent GB-518476-A (GB)
Title: Improvements in and relating to rheostatic braking systems for electric motors
IPC: H02P3/24
Filed: 1938-07-18
Abstract: 518,476. Electric braking of A.C. motors. ENGLISH ELECTRIC CO., Ltd., AYRES, W. E. M., and RICHES. A. J. July 18, 1938, No. 21316. [Class 38 (iii)] In a rheostatic braking system for an A.C. motor shown as a three-phase induction motor, the D.C. excitation of the disconnected stator la, which may come from a separate generator 3 is raised automatically as the speed of the rotor 1b is reduced in order to keep up the potential across its slip-rings and thus make the braking effect dependent on the amount of resistance which may be manually cut out of the rheostat 2. In a modification D.C. excitat:on is supplied from the mains through a fullwave rectifier and no exciter is used. Other modifications using auxiliary excitation are described.
Patent GB-327360-A (GB)
Title: Improved device for running off lengths of fibrous material from reels or rolls thereof
IPC: B65H16/06
Filed: 1929-07-11
Abstract: 327,360. Haefely et Cie Akt.-Ges., E. May 29, 1929, [Convention date]. Winding webs.-A roll c of paper or otber fibrous material to be unwound is supported in a frame a mounted to oscillate in a horizontal plane in accordance with the distribution of the tension between the edges of the web and thus prevent formation of creases in the running-off of the material. The frame a is shown as mounted on a vertical pivot d.
Patent GB-294577-A (GB)
Title: Improvements in low pressure liquid fuel burners
IPC: F23D11/04
Filed: 1928-07-23
Abstract: 294,577. Major, S. E., and Baker, E. F. July 26, 1927, [Convention date]. Spray burners.-A liquid fuel burner comprises a casing C containing an axially slidable fuel supply tube 4 carrying at its reduced end an atomizing cup 1 fitted with a propeller 5 which is rotated by air at low pressure entering at an inlet 8 and passing to the propeller past a valve 9 carried by the tube 4. The tube 4 is moved axially against the resistance of a spring 16 by a rod 14 operated by means of a cam 17 engaging a boss 20 on the end closure cap 13 of the casing. The movement of the fuel supply tube regulates the escape of air from the casing by adjusting the discharge aperture 21 between the cup 1 and the casing nozzle. The casing nozzle is formed by a perforated tapering annular projection 26 and a circular apertuned plate 27 enclosing an annular recess 25. The oil enters the cup from the tube 4 through a hollow screw 24. To relieve the end thrust on the propeller the space behind a plate 33 loosely fitting in a recess 32 in the valve 9 is connected to the atmosphere by a tube 31. Radial baffle plates may be arranged in the casing to deflect the air leaving the propeller before it issues from the outlet 21. The Specification as open to inspection under Sect. 91 (3) (a) states that the oil may be delivered directly into the cup through a supply tube passing through the side of the casing. This subject-matter does not appear in the Specification as accepted.
Patent GB-570291-A (GB)
Title: Improvements relating to telephone instrument circuits
IPC: H04M1/58
Filed: 1943-12-21
Abstract: 570,291. Anti - side tone circuits. SIEMENS BROS., & CO., Ltd., and BONE, R. S. Dec. 21,1943, No. 21408. [Class 40 (iv)] An anti-side-tone circuit is provided with a low-frequency acceptor circuit shunting the receiver in order to attenuate the lower speech frequencies reaching the receiver, particularly those present in the side-tone. As applied to the circuit described in Specification 455,807 which employs a differential microphone M and a three-winding transformer TR, the acceptor circuit consists of two inductances IA, IB, of which IA is normally connected up to give maximum attenuation while IB is inserted by the operation of a key SK. A further key DK serves to disconnect the inductances when a full level of reception is required. The keys may be self-locking keys which are released manually or by the switch-hook when the receiver is replaced. Instead of fixed inductances, an inductance may be used that is variable continuously or in steps.
Patent GB-405027-A (GB)
Title: Improvements in the preservation of timber, fabric and other cellulosic material
IPC: B27K3/15
Filed: 1932-07-29
Abstract: 405,027. Preserving cellulosic materials. BRITISH INDUSTRIAL SOLVENTS, Ltd., 2, Pall Mall East, London, HUTCHINSON, H. B., Moorcroft, Avenue Road, LANGWELL, H., The Garth, Windmill End, and MADDOCKS, C. B., 19, Worple Road, all in Epsom, Surrey. July 29, 1932, No. 21430. [Class 140.] A preservative composition for cellulosic materials such as timber and fabric comprises an aliphatic derivative of an aliphatic aldehyde or aliphatic monohydric alcohol, having a boiling point of not less than 200‹ C. and insoluble or only slightly soluble in water, for example acetals such as dibutylbutylal, polymerized aldehydes, polymerized aldols such as acetaldol and esters of aliphatic carboxylic acids such as hexyl butyrate. The materials may be used in solution in organic solvents such as methylated spirit and butanol, or as emulsions made as described in Specification 376,252. Turkey red oil, butyl, amyl or hexyl phenol (obtained by interacting phenol and the corresponding alcohol), and sodium chloride may be added. Specification 302,698, [Class 140, Waterproof &c. fabrics], also is referred to.
Patent GB-1045374-A (GB)
Title: Transistorized low-noise i.f. amplifier of large bandwidth
IPC: H03F1/26
Filed: 1965-05-21
Abstract: 1,045,374. Transistor amplifying circuits. INTERNATIONAL STANDARD ELECTRIC CORPORATION. May 21, 1965 [May 23, 1964], No.21597/65. Heading H3T. A transistor I.F. amplifier is provided with negative feedback over two stages, whereby the input impedance is so modified as to obtain a matching to the preceding mixer which minimizes noise; i.e. the amplified input impedance is rendered substantially smaller or larger than the output impedance of the mixer. The amplifier comprises two transistors T1, T2 of opposite conductivity types in common emitter connection, direct-coupled over inductor L2 and shunt resistor R4. Each transistor is neutralized by means of an inductor L1, 3, respectively, connected between collector and base. Capacitor C5 and resistor R8 in the emitter circuit determine the local feedback around transistor T2 and the upper cut-off frequency and phase characteristic of the amplifier. Overall negative feedback determining the amplifier input impedance is provided by resistors Z, R3, 5 and capacitor C3, in which Z includes the load resistance.