baber/WOPTO huggingface dataset:
Patent GB-1155871-A (GB)
Title: Comparator Circuit
IPC: H03K5/26
Filed: 1966-07-05
Abstract: 1,155,871. Automatic speed control. SEQUENTIAL ELECTRONIC SYSTEMS Inc. July 5, 1966 [July 6, 1965], No.30070/66. Heading G3R. [Also in Division H3] A unit 10 compares the frequency and phase of a train of reference pulses R with a train of pulses S whose repetition rate represents the speed of an electric motor, the output C of flipflop 26 being used to apply power to the motor being controlled. If flip-flops 24, 26 are in the states A, D, respectively, the motor being underspeed, then the first R pulse will be passed by gate 16, after a delay due to circuit 12, to switch flip-flop 24 into state B. This opens gate 20 so that the next R pulse switches the flip-flop 26 to state C for increasing the speed of the motor. The first S pulse is delayed by circuit 14 and is passed by gate 22 to switch flip-flop 26 to its D state, so removing power from the motor. Gate 18 is not opened, and the state of the flip-flop 24 is unchanged. As the motor is still underspeed, the next R pulse switches the flip-flop back to its power state, and, as the motor accelerates, the increasing frequency of S pulses causes a gradual reduction in the power applied to the motor. At full-speed, the pulses R, S, have the same repetition rate but the S pulses lag by a period to establish enough power to overcome the load. In an overspeed condition, two S pulses are uninterrupted by an R pulse, the first S pulse causing the flip-flop 26 to switch to its D state, and the second S pulse passing through gate 18 to switch 24 to its A state. The next successive R pulse is not passed by gate 20 so that power is not turned on until two R pulses are uninterrupted by a S pulse. The output of state A may be used to apply reverse polarity to the motor for braking. The delay circuits 12, 14 may be replaced by advance circuits before the gates 18, 20. In another arrangement, a winding of the motor is connected between the mid-points of two polarities, one supplied with a constant voltage, and the other connected across the terminals B, C. This arrangement provides reversal of the voltage applied to the winding during an overspeed condition. The frequency comparator circuit may provide an output controlling an oscillator or other frequency generator, instead of an electric motor.
Patent GB-490037-A (GB)
Title: Improved swimming appliance
IPC: B63C9/15
Filed: 1936-11-05
Abstract: 490,037. Inflatable collars. SCHIER, H. Nov. 5, 1936, No. 30104. Void. Convention date, Aug. 8. [Class 77] An inflatable rubber collar has a neck opening shaped as shown so as to be adjustable to the neck of an adult or a child. A central web S is provided between the. two rubber sheets forming the collar.
Patent GB-719998-A (GB)
Title: Improvements in or relating to sintering machines
IPC: C04B7/44
Filed: 1952-11-28
Abstract: 719,998. Sintering apparatus. METALLGES, AKT.-GES. Nov. 28. 1952 [Dec. 4, 1951], No. 30273/52. Class 82 (1) A sinterimg grate adapted to be emptied by tipping comprises a series of grate bars of different thicknesses, and of which the clearances available on tipping are different, so that the grate has a plane surface before tipping, but that relative movement perpendicular to the surface occurs when the apparatus is tipped. As shown, each grate bar 1 has a recess 3 and a hammer head 5, alternate bars having recesses 3 of different heights, so that the clearances a are different. The different movement of the bars on tipping ensures loosening of the sintered material thereon.
Patent GB-299020-A (GB)
Title: Improvements in the manufacture and production of liquid and other hydrocarbons and derivatives thereof by the destructive hydrogenation of carbonaceous materials
IPC: B01J27/18
Filed: 1927-08-08
Abstract: 299,020. I. G. Farbenindustrie Akt.- Ges. Aug. 7, 1926, [Convention date]. Divided on 275,664. Hydrogenation, destructive.-In a process for the destructive hydrogenation of carbonaceous materials in which a large excess of hydrogenating gas is employed in a stream, the reaction is carried out in the presence of catalysts containing the metalloids boron, phosphorus, arsenic, selenium, or tellurium in a free or combined state. These metalloids are used preferably in conjunction with the elements of the 2nd to the 8th groups of the periodic system, particularly those of the 6th group. Suitable catalysts are alderwood charcoal glowed at 800‹ C. and soaked with phosphoric acid or calcium phosphate, molybdenum phosphate, tungsten phosphate, iron phosphate; arsenious acid alone or preferably with molybdenum or tungsten; borides, e.g. titanium or iron boride; molybdic acid containing sodium selenite. The Specification as open to inspection under Sect. 91 (3) (a) also described the use of silicon in the form of silicon carbide, silicides, active silicon hydro silicates. This subject-matter does not appear in the Specification as accepted. Specifications 2308/14, [Class 1 (i), Chemical processes &c.]; 258,272, and 273,337 are referred to.
Patent GB-794327-A (GB)
Title: Improvements in or relating to the production of calcium
IPC: C22B26/20
Filed: 1956-10-04
Abstract: Calcium and silicon-aluminium alloy are obtained by distilling a mixture of Ca/Al and Si/Ca in an inert atmosphere under a pressure of 0.1 to 1.0m  mercury and recovering the metallic calcium.  The temperature may be 1320-1350 DEG C. and the atmosphere argon freed from nitrogen.  The Al/Ca may be obtained by the alumino-thermic reduction of lime and the Si/Ca by electro-thermic reduction of silica with calcium or calcium carbide.  The amount of Al and Si present in the condensed Ca is dependent on the relative proportions of Ca/Al and Si/Ca used, e.g. 64 per cent Ca/Al and 36 per cent Ca/Si gives Ca containing 0.17 per cent Si and 1.60 per cent Al, and 40 per cent Ca/Al and 60 per cent Si/Ca gives Ca containing 0.53 per cent Si and 1.1 per cent Al. Specification 510,759 is referred to.
Patent GB-1049258-A (GB)
Title: Improvements in and relating to suction milking plants
IPC: A01J5/04
Filed: 1965-07-16
Abstract: 1,049,258. Milking plant. K. KARNATH, G. KARNATH and M. H. HOEPLI. July 16, 1965 [July 20, 1964; March 3, 1965; March 13, 1965], No. 30356/65. Heading A1M. Milk from the teat cups together with entrained air enters a vacuum vessel 13 through pipe 10 and passes through a filter 17 whereafter the milk flows from the vessel through outlet 14 and the air is drawn off through connection 15 into a tubular frame 21 blanked off at 21a and coupled at 23 to a suction pump, moisture in the air condensing in the vertical tubes of the frame and being discharged through drip valves or cocks 25, 26. The frame also supports a wash jar 22 with water supply pipe 29. The milk pipes from the teat cups are connected to a milk collecting body coupled to the pipe 10 and communicating with the pulsator through a non-return valve which closes when pressure rises in the collecting body for example when a backwash occurs in pipe 10 thereby preventing flooding of the pulsator. The pipe 10 has a smooth internal wall of constant cross-section.
Patent GB-280721-A (GB)
Title: Improvements in apparatus for extracting stalks from tea
IPC: A23F3/00
Filed: 1926-12-01
Abstract: 280,721. Myddelton, R. F. Dec. 1, 1926. Reciprocating sieves. - In apparatus for extracting stalks from tea as described in Specification 181,941, a preliminary separation of the larger particles of tea from the stalks and small particles is provided by one or more screens formed of parallel wires of circular, triangular or other section, or of plates with elongated apertures and low ridges between the rows of apertures. The wires or apertures are parallel to the direction of reciprocation of the screens, which may be arranged in tiers and may be provided with means for independent adjustment of their inclination. Brushes may be provided to act on the underside 'of the screens. Specification 196,490 is referred to in the Provisional Specification.
Patent GB-649768-A (GB)
Title: Improvements in and relating to phase converters
IPC: H01F30/14
Filed: 1946-10-11
Abstract: 649,768. Phase changing. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 11, 1946, No. 30423. Convention date, Oct. 12, 1945. [Class 38 (ii)] In a 1-3-phase converting circuit which remains balanced under varying loads, powerfactor, and input voltage, with small voltage regulation, the single-phase conductors 1, 2 are symmetrically connected through transformer 26 with respect to two of the three phase conductors 4, 5, the third conductor 3 being connected to conductor 5 through a saturable inductance 15 and a capacitance 16 in series and to conductor 4 through a saturable inductance 19 and a capacitance 20 in parallel. At the working frequency the volt./amp. characteristics of inductance 15 (after saturation) and of capacity 16 are parallel so that the voltage across them is constant for any load, and the volt./amp. characteristic of inductance 19 (after saturation) has a less slope than that of capacitor 20. The saturation voltages of inductances 15, 19 are equal and the load current is so chosen that the inductances are saturated and the current in the capacitor 20 is greater than that in inductance 19. The transformer 26 may be omitted, the two single phase lines being connected to the pair of coincident points 11, 12, and 10, 13 respectively. Preferably the phase angle between the voltages across points 12, 9 and 13, 9 is 90 degrees to give least KVA at unity P.F. in elements 7, 8. The characteristic of 8 may be improved by a capacitor 24 and harmonics may be removed by including inductances 23 to form with capacitors 20, circuits tuned to harmonic frequencies. For stabilizing against substantial variations in single phase input voltage, the transformer may be given a constant voltage with variable current characteristic by connecting a capacitor 28 across the secondary and providing a magnetic shunt 27 between the windings.
Patent GB-322054-A (GB)
Title: A new or improved means for connecting channel members and other members of curved section
IPC: B63B7/06
Filed: 1928-10-20
Abstract: 322,054. Badenoch, D. S., and Chater, W. J. Oct. 20, 1928. Clamps, screw.-Channels and other members of curved section are secured in a detachable manner by clamping the sections 1, 2 between an exterior rigid curved member 3 and an interior leaf spring 4 which tends to flatten. Through bolts 8 passing through aligned holes in the members are provided with butterfly nuts 11 and washers 10. The positions of the leaf spring and the rigid member may be reversed in which case the leaf spring is fashioned to arch. Alternately, leaf springs may be employed both inside and outside the channel members.
Patent GB-699500-A (GB)
Title: Improved pocket or like knife
Inventor: VINER RUBEN
IPC: B26B1/02
Filed: 1951-12-31
Abstract: 699,500. Pocket-knives. TURNER & CO. (CUTLERS SHEFFIELD). Ltd.. T. Dec. 30, 1952 [Dec. 31, 1951], No. 30475/51. Class 30 The pivoted blade of a pocket knife is held in open or in closed position by a back spring and is made fast upon a pivot pin which extends through the tang of the blade and through the scales of the knife, the ends of a U-shape member, manipulated to open and close the knife, being secured to the projecting ends of the pivot pin. As shown, the tang 13 of a blade 10 is fast upon a square-section pivot pin 11 rotatable in round apertures in scales 12 and riveted over a square aperture in each end of a U-shape member 15 moved by hand to open and close the blade and constituting a shackle for attachment of the knife to a. lanyard or chain. The knife may have two blades.
Patent GB-758668-A (GB)
Title: Improvements in or relating to optical lenses
IPC: G02B7/02
Filed: 1953-11-06
Abstract: 758,668. Lenses. RUSSELL, F. M. Oct. 20, 1954 [Nov. 6, 1953], No. 30744/53. Class 97 (1). A lens comprises a pair of superimposed discs 1, 2 at least one of which is of flexible transparent material, the margins of 'the internal faces of the discs being sealed to a ring 3 of compressible material to enclose a fluid in the space 9 therebetween and being carried by a mount having means for adjusting the pressure applied to the outer margin of one or each disc whereby the volume distribution of the fluid is varied to adjust, the curvature of one or both discs. As shown, the mount comprises a member 4 having a shoulder 5 engaging the disc 1 and a screw-threaded portion 6 engaging a sleeve 7 rotatable thereon to press a ballrace 8 against the margins of the plate 2 and so vary the pressure on the fluid, such as oil, within the space 9.
Patent GB-364697-A (GB)
Title: Improvements in or relating to tool-chucks
IPC: B25D17/08
Filed: 1930-10-14
Abstract: 364,697. Percussive tools. ARTHUR, J. and HOLMAN BROS., Ltd., Camborne, Cornwall. Oct. 14, 1930, No. 30761. [Class 124.] Hinged arms 19 are held in the closed position by the spring-pressed collar 22, so that the lugs 18 prevent the withdrawal of the tool. The inclined surfaces allow the passage of the collar 15 when the arms are pulled into the inclined position.
Patent GB-1146744-A (GB)
Title: Process for the production of very pure iron monocrystals
Inventor: MUMMERT KURT
IPC: C30B7/12
Filed: 1966-07-08
Abstract: 1,146,744. Electro-depositing iron. DEUTSCHE AKADEMIE DER WISSENSCHAFTEN ZU BERLIN and INSTITUT FIZICESKOJ CHIMII AKADEMII NAUK SSSR. July 8, 1966, No.30810/66. Heading C7B. Pure iron monocrystals are produced by electro-deposition from an aqueous acid solution containing between 10 and 400 g/1 Fe and of pH between 0À5 and 6, at a bath temperature between 20 and 320‹ C. and current density between 0À05 and 400 A/dm<SP>2</SP>, using a pure iron anode and an electrolytic cell made from or clad with a synthetic resin e.g. P. T. F. E, or a metal resistant to the electrolyte used e.g. Fe or Pt. The cell may be constructed as or housed in an autoclave for operation above 100‹ C. using inert gas to the neccessary pressure. The anode may be in the form of a ring and made from electrolytic and/or sintered carbonyl iron. The cathode may be iron monocrystals (for epitactic deposition) or polycrystalline Fe or Pt. The electrolyte may be made by dissolving pure Fe or a purified ferrous salt.
Patent GB-1039587-A (GB)
Title: Method and apparatus for forming selvedges in shuttleless looms
IPC: D03D47/40
Filed: 1964-08-04
Abstract: In a shuttleless loom in which interconnected pairs of picks are inserted from both edges.  The loops of weft form selvedges and the cut ends project beyond the selvedges and are woven with extra warp threads to form strips of fabric which are cut off during take-up. Each edge of the fabric passes over a freely rotatable circular blade having a wavy cutting edge; a flange rests against the selvedge, towards which it is lightly spring loaded, so as to guide the cutter in case the fabric deviates from its correct path.  The tension in the extra warp threads causes them to become twisted together in a groove formed between the cutting blade and the flange, thereby enabling the weft ends to be gripped by fewer extra warp threads than would otherwise be necessary.
Patent GB-911942-A (GB)
Title: Apparatus for filling containers with cigarettes or the like
Inventor: SCHUBERT BERHARD
IPC: A24C5/354
Filed: 1959-10-22
Abstract: 911,942. Packaging cigarettes. KORBEB.K. Oct. 22, 1959, No. 30914/61. Divided out of 904,429. Class 94(1). Cigarettes are distributed in a container 2 by an element 6 having pivoted to it a supporting plate 8, the element descending as cigarettes from a belt 3 accumulate, passing down one end 2a and along the base of the container with a pivoting motion, and rising at the other end 2b with the plate 8 in inoperative position. Two elements may co-operate, one 6 advancing to a position adjacent the belt to cut off cigarette flow and receive cigarettes for the next container, while the other 6<SP>1</SP> is in the position shown and continues moving to distribute the reserve of cigarettes held between itself and a wall 10. Alternatively a stop 9 may cut off the cigarette supply. In another form (not shown) two elements co-operate to fill a single container.
Patent GB-641467-A (GB)
Title: Improvements in or relating to electric discharge devices especially to cathode ray tubes
Inventor: BROAD DONALD ANTHONY GIFFORD
IPC: H01J29/84
Filed: 1946-10-18
Abstract: 641,467. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Oct. 18, 1946, No. 30991. [Class 39 (i)] A cathode-ray tube has means for separating ions from the electron beam comprising a longitudinal magnetic focusing field and an obturating structure 7 comprising one or more intercepting members defining at least one helical passage which electrons can follow but ions cannot, owing to their greater mass. The obturating structure may comprise a number of radial ribs helically curved, as in the Figure, or a number of tubular electrodes twisted about the axis, or a number of diaphragms with apertures like Maltese crosses spaced along the axis. The invention may also be applied to other devices where particles of different e/m ratio are to be separated, such as mass spectrographs. Specifications 480,948, 518,221 and 538,684 are referred to.
Patent GB-392158-A (GB)
Title: Improvements in or relating to radio receivers
IPC: H03J3/28
Filed: 1931-11-09
Abstract: 392,158. Valve circuits for wireless reception. PLESSEY CO., Ltd., Vicarage Lane, Ilford, Essex, and BAILEY, C. E. G., 5, Guildford Street, Russell Square, London. Nov. 9, 1931, No. 31077. [Class 40 (v).] In a superheterodyne receiver with ganged tuning for the local oscillator circuit 28, 31 and the circuit 11 .. 14 tuned to the received signal, the tuning apparatus is adapted to cover a second waveband without spoiling the ganging by switching an inductance 17 in one of the circuits and a compound impedance 29, 34, 35 in the other circuit. A plurality of circuits tuned to the received signal is used and an additional inductance inserted in each by switches 18. The compound impedance comprises an inductance 29 connected by a switch 30 in the oscillator circuit and coupled to an auxiliary inductance 34 in parallel. with a condenser 35. This circuit resonates at a frequency approximately to the lowest frequency of the long-wave band, and the inductance 34 is made of thin or high-resistance wire to flatten the resonance curve so that the effect extends over about half the tuning range. According to a modification, the compound impedance comprises an inductance in series with a condenser, Fig. 2 (not shown).
Patent GB-226837-A (GB)
Title: Improvements in or relating to drums applicable to concrete or mortar mixers and the like
IPC: B28C5/20
Filed: 1924-12-29
Abstract: 226,837. Blasco, J. M. Dec. 29, 1923, [Convention date]. Rotary batch-mixers; continuous-discharge apparatus with moving containers.-In a mixing machine for concrete, mortar &c. wherein the drum is spirally formed the spiral 1 comprises substantially a single convolution the inner extremity 13 of which is close to the axis of rotation. The drum is charged through the opening 5 and rotates in opposite directions for mixing and discharging. The drum wall may be formed of plane surfaces and with concave ends. According to the Specification as open to inspection under Sect. 91 (3) (a) the spiral wall may be formed in more than one part, as shown in Fig. 5 (Cancelled), and in a modification, a number of spirally formed drums are arranged so that the material passes through each in turn, the discharge end 7<a>, Fig. 9 (Cancelled), of one being displaced axially to pass the material to the charging opening 7b of the next. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1197107-A (GB)
Title: An Electrode for Use in Electrochemical Generators
IPC: H01M4/70
Filed: 1968-06-28
Abstract: 1,197,107. Electrodes for secondary cells. SOC DES ACCUMULATEURS FIXES ET DE TRACTION. 28 June, 1968 [5 July, 1967; 14 June, 1968], No. 31138/68. Heading H1B. In an electrode comprising a conductive apertured sheet 3 supporting, and in the midplane of, a layer of compressed, powdered and conductive material 30, 31 and a metal frame around the sheet 3, the frame has tabs 2 which locate the sheet in the frame, are welded to the sheet 3 and are disposed in and covered by the material 30, 31. As shown in Figs 1, 4 and 6 the tabs 2, 2<SP>1</SP> are formed in pairs on a metal strip 1 which is bent to form a frame for four sides of the electrode a plate lug 35 being welded to one side of the frame. The electrode is stiffened by a cross-bar 4<SP>1</SP> in which the pairs of tabs 2, 2<SP>1</SP> are folded on opposite sides of the cross-bar.
Patent GB-635748-A (GB)
Title: Improvements in or relating to photographic shutters
IPC: G03B9/14
Filed: 1947-11-25
Abstract: 635,748. Photographic shutters. KODAK, Ltd. Nov. 25, 1947, No. 31239. Convention date, Nov. 26, 1946. [Class 98 (i)] In a shutter of the kind comprising a casing 1 having a central exposure opening 3 normally covered by a pair of blades 35, 37, which are pivoted on the casing and movable by a master member 11 oscillatable about said opening under the action of a spring 13 tensioned and released during depression of a pivotally-mounted release trigger 5 normally spring-held in a rest position on the shutter, the master member is resiliently held against the casing to permit axial movement by a pair of diametrically-opposed clips 24, disposed midway between the trigger and a shutter blade-operating pin 27 carried by one blade 35 and extending through a slot 36 in the other blade 37, and is formed with a cam 29 and a bevelled finger 10, the cam actuating the pin 27 which has a bevelled surface 28 adapted to move the master member axially during the first part of the trigger movement and the finger 10 moving the master member axially as the trigger passes under it to return to its normal rest position under spring action. To produce longer instantaneous exposures, a pin on the master member may engage a pivoted gear segment connected to a pallet-controlled gear train, while the pin 27 is riding on the surface 58 of the.cam 29, the extent of the delay between the opening and closing of the blades being determined by the initial position of the gear segment set by a cam on a manuallyoperable setting ring engaging a pin on the gear segment.
Patent GB-604021-A (GB)
Title: Improvements in mouse, rabbit, and like traps
IPC: A01M23/30
Filed: 1945-11-21
Abstract: 604,021. Vermin traps. BROOK, E. J. L., and WOOD. L. Nov. 21, 1945, No. 31284. [Class 5(i)] The invention relates to spring-jaw traps and consists in pivoting the top member or inturned flanges on the base member. The top member 2, provided with teeth 17, is pivoted on the base member 1 at its contacts with the inturned flanges 12 and a spring is attached to the two members by the hooks 6. The bait-platform is pivoted by lugs 20 in piercings 14 in the bottom member. The trap is held in the set position by engagement of the edges of the lugs 20 with the edges 21 of the top member 2. Downward movement of the bait-platform disengages the two edges and the trap is sprung.
Patent GB-656599-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q3/00
Filed: 1948-01-16
Abstract: 656,599. Automatic exchange systems. MERCER, R. Jan. 16, 1948, Nos. 31325/50 and 31326/50. Divided out of 656,559. Drawings to Specification. [Class 40 (iv)] The system described is identical with that of Specification 656,559, but the claims relate to the selection of an idle route including at least two switches in tandem by the testing of leads each common to one of the groups of switches over which a desired connection may be set up, each lead having markings indicative of the idle or busy condition of each switch in the group applied thereto at distinctive instants in a cycle.