baber/WOPTO huggingface dataset:
Patent GB-357248-A (GB)
Title: Improvements in electro-magnetic sound recording and sound reproducing apparatus
IPC: H04R11/08
Filed: 1930-06-20
Abstract: 357,248. Sound reproducing and recording devices. WILLANS, P. W., 7, Ormonde Mansions, Southampton Row, and HOLMAN, H. E., 64A, The Chase, Clapham Common, both in London. June 20, 1930, No. 18894. [Class 40 (iv).] An electromagnetic sound recording and reproducing device, such as a gramophone pick-up, is provided with an armature of a high permeability alloy, such as that known under the registered Trade Mark " Mu metal, the moving system having an upper resonance frequency of not less than 4000 cycles per second and the armature having a moment of inertia about its axis of rotation of less than 0À06 C.G.S. units. The pick-up shown comprises a magnet a provided with polepieces b carrying coils c, a Mu metal armature d being carried on a shaft e mounted in suitable bearings so as to allow the armature to oscillate between the polepieces. The needle holder f is mounted on the shaft e at a point remote from the armature, one of the bearings g of the shaft being provided between a the needle holder and armature. This bearing g is preferably of rectangular shape and is carried in a rectangular bearing packed with a damping lining of rubber &c. The shaft e and needle holder f are preferably constructed of Elektron metal. The armature, which is conveniently # inch from tip to tip, with an axial length of 3/16 inch, is tapered away from the shaft e, an optimum taper such that its thickness varies inversely as its distance from the rotational axis being preferably employed.
Patent GB-1413447-A (GB)
Title: Electrical stepping motor
IPC: H02P8/14
Filed: 1974-04-30
Abstract: 1413447 Stepping motor control SIEMENS AG 30 April 1974 [30 April 1973] 18960/74 Heading H2J A stepping motor, having #-connected stator windings W AB  - W BC , is provided with a control circuit comprising AND gates 7-9 and a corresponding set of controllable switches which may be relays 1-3 controlled by the outputs of respective gates and providing controlled paths between a source U B  and the nodal points A-C of the windings which are thereby energized by signals applied at inputs 4-6, and signalling means 11 operable to supply a signal to the other inputs of the gates to disable them when the magnitude of the current flowing in the energized windings exceeds a predetermined value. The arrangement is intended for use with a source U B  of a voltage which would render winding currents too high, and the provision of the gates and device 11 provides a pulsed current in the windings whilst signals at 4-6 are present. The switches 1-3 provide further controlled paths to an earth point M via line 12 and a resistor 13 provides a current indicative signal to the device 11. In a modification, Fig. 2 (not shown), push-pull transistors replace the relays 1-3.
Patent GB-1515370-A (GB)
Title: Multicell electric batteries
IPC: H01M50/529
Filed: 1975-05-06
Abstract: 1515370 Intercell and electrode connections for batteries CHLORIDE GROUP Ltd 29 April 1976 [6 May 1975] 18986/75 Heading H1B Cells of, e.g., a Ni-Cd alkaline battery are interconnected through partitions 14 or connected to electrodes by metal plates 8, 9 interconnected by dimples 21. Expanded metal sheets are placed between the battery plates and the partition plates to form conductive cushions. The plates 8, 9 are incorporated in the partition plates during moulding. If the case is too large for the cell, a metal plate 15 connected to the electrodes and a porous member 12 may be used to fill the excess space.
Patent GB-1320061-A (GB)
Title: Method for producing a metallic container or can
IPC: B65D1/12
Filed: 1971-06-04
Abstract: 1320061 Cans DAIWA CAN CO Ltd 4 June 1971 [4 June 1970] 18992/71 Heading B8D [Also in Division B3] A metal can or other container is made by drawing a blank through a die to form a cup elongating the side wall of the cup by a further drawing operation which does not elongate the side wall adjacent its free edge, or elongates it to a lesser degree than the rest of the side wall, and trimming and flanging the free edge of the cup. Thus a can is formed having a closed end 2 of substantially the same thickness as the original blank. An adjacent section 4 reduces in thickness to a thin main body 5, after which there is a margin 6 which increases in thickness in the direction of the free end.
Patent GB-868362-A (GB)
Title: Plant setter for planting machine
Inventor: PRUFER PAUL
IPC: A01C9/06
Filed: 1958-06-13
Abstract: 868,362. Planting machines. BODENBEARBEITUNGSGERATE VEB. June 13, 1958, No. 18993/58. Class 6(1). A planting machine comprising gripping devices 5 attached to a chain 7 is provided with a plant holder attached to each gripping device, the holder being formed with prongs 7, 8 directed obliquely upward the springs 8 acting as a stop for the roots of the plant. The foliage of a plant is held by the gripping device and the roots are supported by the holder. The plant may be in a soil block, the block being supported by the holder. Sprouted potatoes may be planted by the machine, the potatoes being carried solely by the holders.
Patent GB-1504627-A (GB)
Title: Dehydrogenation catalysts their preparation and use
IPC: B01J23/86
Filed: 1975-05-06
Abstract: 1504627 Dehydrogenation catalysts INST FRANCAIS DU PETROLE 6 May 1975 [7 May 1974] 18994/75 Heading B1E Catalysts are prepared by forming a homogenized paste containing an iron compound, a chromium compound and a potassium compound and a clay and/or talc, shaping, drying and calcining the paste at 850-1050‹C, the proportions used being such that the calcined catalyst contains 3-55 wt. % of a potassium aluminosilicate and/or potassium magnesium silicate formed by reaction of the potassium compound and the clay or talc and that the weight ratios of the metal oxides are: Fe 2 O 3  : K 2 O :: I to 10 : 1, CrO 3  : K 2 O : : 0.05 to 0.4 : 1 and Fe 2 O 3  : CrO 3  : : 15 to 40 : 1, more potassium compound being used than can react with the clay and/or talc. In a modification up to 50 mole % of the potassium compound is replaced by an equivalent amount of another alkali metal compound and/or an alkaline earth metal compound.
Patent GB-161104-A (GB)
Title: Improvements in alloys
IPC: C22C19/00
Filed: 1920-07-06
Abstract: 161,104. Milliken, F. July 6, 1920. Alloys for resisting corrosion at high temperatures consist of chromium, copper, nickel, manganese, and 16-20 per cent of iron, preferably 6-7 per cent of chromium, 31-38 per cent of copper, 38-46 per cent of nickel, 0.25-0.75 per cent of manganese, and 16-20 per cent of iron.
Patent GB-1005122-A (GB)
Title: Improvements in record players
Inventor: ULLMANN HENRY
IPC: G11B17/02
Filed: 1963-05-14
Abstract: 1,005,122. Gramophones. METTOY CO. Ltd. May 14, 1964 [May 14, 1963], No. 19034/63. Heading G5R. The electric motor 4 of a gramophone is tiltably mounted on an axis 6 so that its driveshaft 7 can be moved into and out of frictional driving engagement with a drive ring 3 on the turntable 4, and the motor is tilted to disengage the drive when a lever 11 is actuated by movement of the stylus arm into a parked position. The stylus arm is provided with an abutment 32 which can engage one step on a support, as shown in Fig. 4, without touching the lever 11. When it is moved to the second step it engages the lever 11 and also operates a switch (not shown) to turn off the motor. The lever 11 may be provided with a transverse pin 14 which engages in notches formed in a pair of brackets 17, a spring 19 holding the lever so engaged and biasing it rotationally towards the stylus arm. The motor 4 is biased by gravity and by a spring 8 into its engaged position.
Patent GB-419763-A (GB)
Title: Manufacture of cellulose esters
IPC: C08B3/16
Filed: 1933-04-18
Abstract: Cellulose is pretreated in a bath containing butyric acid or propionic acid or both, and esterified by a single bath process to introduce butyryl and propionyl radicles, with or without acetyl radicles.  In an example, cotton linters are treated with a mixture of butyric acid and chloracetic acid for 4 hours at 80 DEG  F., and are then centrifuged and introduced into a mixture of butyric acid, propionic acid, propionic anhydride, and sulphuric acid.  The cellulose propionate-butyrate obtained may be hydrolysed.  In another example, cotton linters are pretreated with a mixture of propionic acid and acetic acid for 4 hours at 150 DEG  F., and there are then added butyric acid, acetic anhydride, and sulphuric acid.  The cellulose acetate-propionate-butyrate obtained may be hydrolysed. The mixed esters are used in the manufacture of films.
Patent GB-1060331-A (GB)
Title: Filaments extrusion method and apparatus
IPC: B29C48/395
Filed: 1964-05-07
Abstract: 1,060,331. Melt-spinning apparatus. CHEMCELL (1963) Ltd. May 7, 1964 [Feb. 26, 1964], No. 19096/64. Addition to 1,004,217. Heading B5B. In a melt-spinning apparatus, finely-divided thermoplastic material is confined while first being pressed into a solid block against a heated element having elongate channels therethrough, thereby melting the leading surface of the block and passing it through the channels as a molten material, the melt filtered, and the filtered melt further heated by contact with an independently heated spinneret while being drawn off in filamentary form through the spinneret. In the apparatus of Fig. 3, powdered material is conveyed by pressure screw S along the splined sleeve 251 of the barrel G, which is surrounded by a liquid cooling jacket 252, and is packed into a solid plug of material at the lower end of the screw, becoming semi-plastic inside the tapered ring 261 and plastic and semi-molten at the face 280a of the block N, under the action of the band heater 285. In this state material enters the heating passages 280 in the block N where it is further heated to the required temperature and liquefied to a filterable condition. The melt then passes through the passage 263c and through the filter pack P, constructed of a series of stainless steel screens, and through the passage 277c in the filter support 277 to the spinneret plate 274, electrically heated by band heater 286, from which it is extruded in filamentary form.
Patent GB-944854-A (GB)
Title: Improvements in textile carding machines
Inventor: NUTTER WALTER
IPC: D01G15/88
Filed: 1961-05-26
Abstract: 944,854. Card clothing. T. M. M. (RESEARCH) Ltd. Aug. 16, 1962 [May 26, 1961], No.19155/61. Heading D1N. Card wire for doffer cylinders has teeth with an angle of rake that does not exceed 60 degrees, a density not greater than 12 teeth per inch and a length not less than 3 millimetres measured from base to tip along a line normal to the longitudinal axis of the wire. A preferred embodiment has 10 teeth per inch, a length D of 3.5 millimetres, overall height of wire of 4 millimetres, thickness of teeth at the top of 0. 17 inch and of the base of 0.0315 inch, and an angle of rake of 56 degrees.
Patent GB-640274-A (GB)
Title: Improvements in and relating to means for protecting water supply systems against the effect of frost
IPC: F16L53/00
Filed: 1947-07-17
Abstract: 640,274. Water supply. GRIBBLE, H. G. July 17, 1947, No. 19178. [Class 68 (i)] In a water supply system in which the water is siphoned out of a storage tank a to prevent damage by freezing ; the mains supply valve is closed and the siphon interrupted by opening a hand-operated valve in a pipe i so permitting air to enter the top of the siphon whilst the service pipes c, dare drained, thus leaving the storage tank a filled to the intake level of the pipes c, d. The siphon consists of a cylinder b mounted within the tank with its lower end open and spaced from the bottom of the tank so that water may enter the cylinder and proceed out through the service pipes c, d at the top, these pipes being disposed slightly below the full water level A of the cistern. In a modified form, an automatic air control valve is fitted to the pipe i, it being controlled by the water pressure in the mains L, it maintaining the pipe i closed as long as the mains supply valve is open. In a further form, the mains L enter the cylinder b and the pipe i is provided with a ball valve so that, if the surface of the water in the tank is frozen, water may still be fed to the pipes c, d but is prevented from passing up the pipe i by a ball valve. An immersion heater may be provided in the tank. The pipe i may be provided with an automatic valve to permit the expulsion of air from the siphon on restarting it.
Patent GB-1045766-A (GB)
Title: Device for setting the angular position of an object such as a magnetic recording head
IPC: G11B5/48
Filed: 1964-05-08
Abstract: 1,045,766. Positional adjustment of magnetic heads. STANDARD TELEPHONES & CABLES Ltd. May 8, 1964 [May 14, 1963], No. 19215/64. Heading G5R. A multi-track magnetic head 4 is secured to a support plate 5 which is hinged about a pair of hemispherical-headed screws, of which one 71 is shown in Fig. 2, and which is biased by a spring 8 so that one edge 19 bears against a stop 10 which in turn bears against a truncated pyramid member 15. Adjustment of both the screws 7<1> moves the head across the tape 18, and one of the screws may then be adjusted to bring the head parallel to the tape 18. Member 15 is pivoted eccentrically and may be rotated to give coarse adjustment in azimuth; fine adjustment is obtained by rotating a screw 12 carrying the support 10 to move the latter up or down an inclined face of member 15.
Patent GB-1389648-A (GB)
Title: Attachment for a coke-oven charging car for removing charge hole lids
IPC: C10B25/20
Filed: 1973-04-24
Abstract: 1389648 Removing charge hole lids GEWERKSHCAFT SCHALKER EISENHUTTE 24 April 1973 [2 June 1972] 19234/73 Heading C5E An attachment for a coke-oven charging car for removing charge hole lids, comprises a displaceable lid removal trolley 3, a lifting device with a traverse means 5 and a charge hole lid pickup 6, and an indicator which indicates whether the lid 13 has been picked up comprising a lever 15 pivotably attached at one point to the traverse means and provided at another point with a feeler arm 14, a setting bar 16 pivotably attached to the lever, movable axially in substantially vertical guide 22, and a limit switch 17 mounted on the lid removal trolley and actuated by the setting bar. The lever 15 may be a simple crank or T-shaped with one arm 19 pivotally attached to the traverse means 5, another arm 20 to the setting bar 16, with the third arm 21 carrying the feeler arm 14. The setting bar 16 is fitted with a return spring 18 and the guide 22 is located on the trolley 3. The lid pick-up may be mechanical or magnetic. There may be two or more levers for each lid pick-up. If lid 13 has not been picked up, feeler arm 14 moves under the pickup 6, but if lid 13 has been picked up, feeler arm 14 bears on the lid; thus the setting bar 16 only actuates the limit switch 17 when the lid has been picked up when the lifting device is raised.
Patent GB-1015649-A (GB)
Title: Apparatus for controlling the video signal of a television receiver
IPC: H04N5/16
Filed: 1964-05-08
Abstract: 1,015,649. Television receivers; automatic gain control. HAZELTINE CORPORATION. May 8, 1964 [July 2, 1963], No. 19289/64. Headings H3Q and H4F. In a television receiver, the contrast control potentiometer 22 is connected between a source of video signals and a point of reference potential, the black level being stabilized at the reference potential so that the black level is independent of the setting of the contrast control. As shown, the A.G.C. valve 29 is fed with horizontal flyback pulses, delayed at 36 ... 38, so that it is operative only during the back porch of the signal. The ratio of resistors 28, 30 is substantially equal to that of 31, 32, hence the A.G.C. voltage on line 40 is such that the black level at 21 is stabilized at the reference potential at 26. Resistor 44 compensates for the current in 43. A diode 41 is arranged as described in Specification 1,008,010 so that the video signals are D.C. coupled for scenes of low average brightness and A.C. coupled for other scenes so as to provide overload protection. The reference voltage at 26 may be adjusted at 34 to compromise between good noise performance and correct synchronization. The brightness control 47 is fed from point 26 so as to compensate for change in black level with adjustment of 34.
Patent GB-1105525-A (GB)
Title: Improvements relating to the manufacture of metal barrels
Inventor: GRETTON-LOWE REX
IPC: B65D25/22
Filed: 1964-05-08
Abstract: 1,105,525. Metal barrels. FAIREY ENGINEERING Ltd. 10 May, 1965 [8 May, 1964], No. 19297/64. Heading B8D. [Also in Division B3] A welded sheet metal keg 10, one end of which comprises a domed circular end wall 11 welded to the side wall 12, is provided with three or more circumferentially spaced flange sections 22, which project axially outwardly from the keg, the end wall and the flange sections being made from the same sheet of metal. A rubber hand grip 28 may be moulded around each quadrant 18. Alternatively an annular rubber skirt is moulded around the tapered ends of all four quadrants which are then welded to the keg.
Patent GB-580394-A (GB)
Title: An improved extractor
IPC: C11B1/10
Filed: 1944-10-09
Abstract: In an extractor for oil seeds &c. comprising a number of stationary cylindrical drum sections or cells 6 in horizontal co-axial relationship provided with a feed inlet 8 and an extract outlet 11 in one of the end cells and an extracted material outlet 12 and a solvent inlet 13 in the opposite end cell and with overflow openings 7 for the liquid from cell to cell, feed passages 14 from cell to cell are arranged above the level of the liquid into which the feed is periodically dropped by a lifter 19, 20 provided in each cell.  In the form shown, a single drum 1 subdivided by diaphragms 5 is used the latter preferably occupying the lower two-thirds of the casing or the whole cross-section in a modification.  The overflow openings 7 are staggered in consecutive diaphragms.  The feed passages 14 comprise chutes opening into neighbouring cells through recesses provided in the diaphragms.  The <PICT:0580394/III/1> <PICT:0580394/III/2> lifter in each cell comprises a shovel at the outer end of each of a pair of radial arms 18 extending from a hub 16 keyed on a rotatable shaft 17.  Each shovel, Fig. 3, comprises an inclined scraper blade 19 and an oppositely inclined sieve plate 20 adapted to enclose between them an amount of feed.  A filter accessory 22, particularly of the kind described in Specification 568,189 may be provided, the filter residue being re-cycled to the extractor. In other modifications, the solvent overflows and the extracted material may be conducted in pipes from cell to cell outside the casing.
Patent GB-856856-A (GB)
Title: Organoboron compounds and methods of making same
IPC: C07F5/02
Filed: 1959-06-08
Abstract: Polymers or copolymers comprising recurring structural units of the formula -CH2-C(R)(G)-, where R is a hydrogen atom or a monovalent hydrocarbon radical, and G is -B(OH)2 or -B(OR1)3 M or -B(OR1)2, R being an alkyl radical of 1 to 4 carbon atoms and M being MgCl, MgBr, Li, K or Na, are prepared by polymerization or copolymerization of a compound of the formula CH2=C(R)G.  In an example, dimethyl ethylene boronate polymerizes quite readily at or below room temperature to give a transparent polymer having the repeating unit -CH2-CH(B(OCH3)2)-.ALSO:The invention comprises b -unsubstituted vinyl boron compounds having the formula CH2 = C(R)G, where R is a hydrogen atom or a monovalent hydrocarbon radical and G is - B (OH)2, - B(OR1)2 or - B(OR1)3M, R being an alkyl radical comprising from 1 to 4 carbon atoms and M being MgCI, MgBr, Li, K or Na.  The compounds of the formula CH2 = C(R) - B(OR1)3 M may be prepared by reacting a boric acid ester with a metalated vinyl compound CH2 = C(R)M.  A b -unsubstituted vinyl boronic acid or its ester may be obtained by reacting the corresponding compound CH2 = C(R) - B(OR1)3 M in a non-aqueous medium with an anhydrous acid or with an anhydrous active-halogen containing compound, e.g. benzoyl chloride, respectively.  Examples describe the preparation of ethylene- and isopropeneboronic acids, chloromagnesium trimethoxyvinylboron, lithium triisopropoxy isopropenylboron and dimethyl ethyleneboronate. The novel products polymerize readily (see Group IV(a)).
Patent GB-767537-A (GB)
Title: Improvements relating to radar aerial systems
Inventor: MILNE KENNETH
IPC: G01S13/44
Filed: 1954-07-02
Abstract: 767,537. Radio direction-finding. BRITISH THOMSON-HOUSTON CO., Ltd. June 21, 1955 [July 2, 1954], No. 19493/54. Class 40(7) Radar equipment of the kind in which error signals are derived so that the aerial system may be maintained i n alignment with the target includes an aerial system consisting of three aerials having overlapping beam patterns symmetrica 1 1 y arranged about an axis and such that comparison of the signals derived from two of the aerials determines an error signal in respect of one plane and comparison of the signal from the third aerial 'and the combined signals from the first two determines a error in a second plane - perpendicular to the first. The aerials may - be waveguide horns arranged as shown at A, B and C and facing out of the plane of the paper; a common focusing lens is placed in front of the horns to give over-' lapping divergent radiation patterns (Fig. 1, not shown). It is shown by means of a mathematical discussion referring to Figs. 2 and 4 (both not shown) that if a, b and c 'are the signals obtained from aerials A, 'B, and C respectively then the azimuth error will be proportional to: and the elevation error to: In the preferred waveguide network for obtaining signals-of these values the signal b is first retarded in phase by 90 degrees .arid then fed to a 3dB coupler X along ,with signal c. The output of the coupler at C<SP>1</SP> is #¢ (c - b) which is the azimuth error divided by #<SP>3</SP>/ 2 . The other output of coupler X is fed to 4.77dB coupler Y along with signal a to give an output at A<SP>1</SP> of #2/3 (a-b/2 - c/2) which is the elevation error divided by the same constant #3/2. It may be noted that the signals fed through a 90 degree phase advancer if required, add at the output B' and that, regarding the network from this end, a transmitter may'be connected at this point to give an equal intensity of transmission from each of the aerials A, B. and C. The error signals at A<SP>1</SP> and C<SP>1</SP> may be combined in a further 3dB coupler to give two output signals either of which represents the resultant error signal in magnitude and phase angle relative to the combined sum signal output at B<SP>1</SP>. (The phase angles of these outputs are measured in opposite directions from the reference.)