baber/WOPTO huggingface dataset:
Patent GB-600165-A (GB)
Title: Improvements in magnetic compasses
Filed: 1945-09-28
Abstract: 600,165. Compasses. SPERRY GYROSCOPE CO., Inc. Sept. 28, 1945, No. 25312. Convention date, Sept. 28, 1944. [Class 37] [Also in Group XXXVIII] A vertical rod or wire 1, Fig. 1, carries a varying or alternating current so that it vibrates in a plane normal to the horizontal component of the earth's magnetic field. Preferably, condenser plates 38, 39, Figs. 1, 4, pick up the components of vibration, and the induced voltages are applied to coils 42, 43, Fig. 4, to position rotor 45, or may be applied to the plates of a cathode-ray tube directly, and through phase-sensitive rectifiers to avoid 180 degrees ambiguity, Fig. 6 (not shown). Any component of the driving voltage in the pick-up circuits may be balanced out by adding adjustable voltages from potentiometers in parallel with the wire. The wire preferably vibrates at its resonant frequency and forms a condenser with cylinder 6 which is in the input of the multi-vibrator 26 controlling the oscillator 27 supplying the wire-current. The wire is preferably mounted in an evacuated envelope which is supported from gimbals to allow pendulous movement in any vertical plane, and its natural frequency is adjustable by screw 9 determining its tension. Vibration is started by discharging a condenser through coils 32 to produce a momentary magnetic field, Fig. 5 (not shown). The wire may consist of a quartz fibre with a metallic coating so as to have a very high Q value, when it will exhibit gyroscopic properties and tend to resist any variation of its plane of vibration.
Patent GB-656208-A (GB)
Title: Improvements in or relating to magnetic devices
IPC: H01F7/13
Filed: 1948-09-29
Abstract: 656,208. Electromagnets. UNITED AIRCRAFT CORPORATION. Sept. 29,1948, No. 25349. Convention date, Oct. 28, 1947. [Class 35] In an electromagnetic device having an armature arranged to move in direct proportion to the value of the current flowing in the electromagnet coil such as required to actuate a control valve, the main components comprise existing coils 10, 14, annular permanent magnet 28 and armature 12 all mounted axially within a cylindrical casing 26 having end-plates 22, 24. The armature 12, which actuates a valve member 40, is centred between the end plates 22, 24 by springs 18, 20. Owing to the presence of the permanent magnet 28 the direction of the armature displacement depends, not on which coil is excited, but on the polarity of the excited coil. Also, owing to the distribution of the fluxes due to the existing coils 10, 14 and of the permanent magnet 28 and to the constancy of the sum of the air gaps 16, 54, the force exerted upon the armature 12 is directly proportional to the current in the coils 10, 14. As shown in Fig. 1, a potentiometer having a contactor 58 directs current through the coils 10, 14 according to the position of said contactor in order to change the direction of the armature movement. The coils 10, 14 may be in series, or in parallel, but the latter connection is preferable as it will not render the device inoperative if one of the coils burns out: Specifications 470,284, [Group XXIX], and 607,856, [Group XXXIII], are referred to.
Patent GB-322461-A (GB)
Title: Improved method of and apparatus for measuring the turbidity of liquids
IPC: G01N21/29
Filed: 1928-09-04
Abstract: 322,461. Paterson, W., (Middendorp, D. J.). Sept. 4, 1928. Turbidometers.-The turbidity of a liquid is estimated by causing a beam of light to be projected through the liquid along an extended path and observing the distance to which it penetrates. The apparatus comprises a casing a containing the liquid and having opposite walls provided with reflectors b, c inclined at a small angle to each other. Light from a source. e enters the casing through a transparent area d of the mirror b and passes to and from in a zig-zag path so that each reflectors forms a number of images of the source e. The images in the reflector b are observed through a transparent area d<1> at the same level as the area d but displaced laterally therefrom, and the turbidity of the liquid is estimated by the number of images which can be seen. To enable a numerical value of the turbidity to be obtained a slidable diaphragm plate f may be provided which is moved until it appears to intersect the last visible image. This plate is provided with an external pointer moving over a scale g on the casing.
Patent GB-1098658-A (GB)
Title: A method for producing a dihydrochrysanthemolactone
IPC: C07D311/94
Filed: 1966-06-08
Abstract: Dihydrochrysanthemolactone is prepared by reacting cis-homocaronic acid anhydride with 2 mols. of a methylmagnesium halide, in an inert organic solvent.  Pyrocin is formed as a by-product.
Patent GB-518746-A (GB)
Title: Improvements in or relating to tiltable seats, in particular for a land, water or aerial vehicle
IPC: B60N2/10
Filed: 1938-08-31
Abstract: 518,746. Adjustable seats. SOC. d'ACCESSOIRES EN TUBE POUR AUTOMOBILES (T.U.B.A.U.T.O.). Aug. 31, 1938, No. 25504. Convention date, Sept. 7, 1937. [Class 52 (ii)] A tiltable seat, particularly for vehicles comprises an arcuate frame element 2, the centre of curvature O of which coincides approximately with the centre of gravity of the occupant of the seat, supported on a base 4 by means of rollers 3, 5 on each side, with a guide roller 10 mounted in housings 8 pivotally mounted on the axle of the front rollers 3. To retain the seat in adjusted' position, a latch 13 secured to the axle 7 of the front rollers engages in recesses in the tube e .2, and is operated by the cranked end of the axle _ 7. The latch may be controlled by a spring, or by the weight of .a a knob 14. The base 4 may be slidable in guides fixed to the floor, locking means being provided.
Patent GB-1020154-A (GB)
Title: Improvements in or relating to measuring devices
Inventor: MASON FREDERICK PERCIVAL
IPC: G01R19/22
Filed: 1963-06-27
Abstract: 1,020,154. Electric measuring instruments; voltage measurement. CREED & CO Ltd. June 27, 1963, No. 25601/63. Headings G1Q and G1U. An alternating voltage is applied over resistor 3 and capacitor 4 to the base of a common emitter transistor 5 whose collector is energized over resistor 6 and base energized over resistor 7 from a negative supply, while the emitter is earthed. The collecter is capacitance coupled to a bridge rectifier 9 energizing a moving coil meter 10, which is returned over a feedback path to the junction between resistance 3 and capacitance 4 so that the meter reading is linearly related to the A.C. input which may be shunted by resistance 11. The meter output may be used as a telemetering control voltage.
Patent GB-382992-A (GB)
Title: Improvements in water and other fluid joints
IPC: F16L37/08
Filed: 1931-09-12
Abstract: 382,992. Pipe joints. JENKINS, G. B., of Jenkins Productions, Ltd., Dereham, Norfolk. Sept. 12, 1931, No. 25618. [Class 99 (i).] A fluidtight joint is madÚ between a plain pipe end and an extension pipe by drawing a flat surface a carrying packing B against the mouth of the pipe by means of a nut E on a stem C which carries two claws c pivoted on separate axes and kept in the spread-out position by a spring D.
Patent GB-226169-A (GB)
Title: Method of and apparatus for treating paper stock
IPC: D21D1/32
Filed: 1924-10-28
Abstract: 226,169. Kennedy, A. X. Dec. 15, 1923, [Convention date]. Pulping engines.-In means for feeding paper stock, particularly applicable to heavy stock, a propeller 17, Fig. 3, feeds the stock as a column to the space 25 and an impeller 20 forces it through the discharge pipe 11, Fig. 1, and up a pipe 12 to the beater 16. The pump shaft' 4 is mounted in a single bearing 3. The space 25 may be extended and provided with a number of propellors co-operating with baffles to reduce the stock, a bearing being provided at each end of the shaft. In the arrangement shown in Fig. 7, two propellers 17, 49 supply a single impeller 20, t'he shaft 4 passing through packing 47, 48.
Patent GB-339241-A (GB)
Title: Improvements in motor vehicles for refuse collecting
IPC: B60P3/14
Filed: 1929-08-23
Abstract: 339,241. Electricars, Ltd., Treece, J. W., and Jones, C. E. Aug. 23, 1920. Tipping and scavengers' carts.-In an electrically-propelled refuse-collecting vehicle, the drive is transmitted through the steering wheels which are sprung, the electro-motor 37 being pivotally mounted on upwardly extending links 41 pivoted on an underswept transverse chassis member 43 disposed between longitudinals 3; the motor casing 38 is attached to a differential casing 36 supported on the front axle 26, the arrangement allowing a longitudinal swinging movement of the driving unit with the axle. The steering wheels may be driven through gearing 32, 33 from the divided transmission shaft 34, universal joints 35 on bevel gearing being provided in line with the stub axle pivots. Instead of a single motor, a pair of motors, similarly mounted in parallel, may be employed driving the divided shaft lengths 34 through bevel gearing. The invention is shown applied to a refuse-collecting vehicle of the kind comprising a drum 1 with loading openings 9 mounted on runners 2 and adapted to be rotated by a pinion 4 on a shaft 5 engaging pin teeth 8. The drum is mounted on underswept transverse members 7 between the longitudinal chassis members 3 which are bent inwardly at the front of the load carrying portion and are upswept over the front and rear axles. Tipping means for the drum comprising the usual screwed rod and tube 13, connected to the drum by links or levers 14, is actuated by an auxiliary motor 20 which also drives the shaft 5, the motor driving, through a belt or chain 18, a countershaft 16 which is connected to the tipping means through gearing in a casing 15 and to the shaft 5 through reduction gearing in a casing 21.
Patent GB-1390424-A (GB)
Title: Vehicle safety belt apparatus
IPC: B60R22/48
Filed: 1972-06-01
Abstract: 1390424 Vehicular safety devices LECTRON PRODUCTS Inc 1 June 1972 [4 June 1971] 25674/72 Heading B7H [Also in Division G1] A detection apparatus for detecting the presence of an occupant in a vehicle seat and the securing of a seat belt about the occupant comprises first and second conductors 18, 20 respectively operatively connected with the belt and the seat, and an R.F. oscillator circuit 22 for detecting a predetermined change in capacitance and/or inductance of the conductors when the occupant sits and fastens the belt. Conductor 18 is formed in two parts respectively carried by the seat belt halves and is connected via a tuning capacitor 34 and a variable capacitor 36, by which the sensitivity of the circuit may be altered, across the base and collector of a transistor 30. The oscillator circuit includes a capacitor 32 for establishing the basic oscillating frequency, a capacitor 38 for shaping the output, limiting and bias resistors 42, 44 and 46, 48 respectively and a filter coil 40. When an occupant sits and fastens the belt the reactive impedance change in the first conductor loop, and in the capacitor formed by conductors 18, 20 detunes the oscillator to zero frequency and a D.C. sign is emitted on output line 50 to an amplifier section 24. An output line 52 from the amplifier is connected to a coil 58 of a solenoid switch 26 which controls a seat belt warning or ignition lock device 28.
Patent GB-674852-A (GB)
Title: Improvements in the spinning of artificial textile fibres
IPC: D01D4/00
Filed: 1948-10-05
Abstract: <PICT:0674852/IV (a)/1> <PICT:0674852/IV (a)/2> In the production of artificial textile fibres, the spinning solution, immediately before passing through the spinneret, is forced through one or more circular dish-shaped perforated lamin  made of metal or artificial resin and having holes of smaller diameter than those of the spinneret, the lamina or lamin  resting on the spinneret.  The lamin  may be made of nickel, stainless steel, platinum, gold, or tantalum.  As shown in Fig. 3, a spinneret 4 has a frusto-conical border 5 extending into a flange 6.  Upon this border 5 there is placed a dish-shaped disc which has a perforated flat portion 1, a frusto-conical wall 2, and a flanged circular border 3.  As shown in Fig. 7, the lamina, which is placed on the spinneret 4, has a cylindrical portion 7 so that the perforated flat portion 1 penetrates more deeply into the cavity of the spinneret than is possible with the construction shown in Fig. 3. The lamina acts as a final filter for the spinning solution and it effects to some extent a molecular orientation of the filament-forming substance prior to extrusion.
Patent GB-1340113-A (GB)
Title: Variable capacity measuring and dispensing device for liquids
IPC: G01F11/06
Filed: 1971-04-19
Abstract: 1340113 Raising liquids by vacuum; vacuum pumps SHERWOOD MEDICAL INDUSTRIES Inc 19 April 1971 [15 May 1970] 26066/71 Headings F1N and F1R [Also in Division B1] A device which dispenses variable quantities of liquid comprises a body carrying a reservoir and having a plurality of separate chambers one or more of which can be selectively evacuated while the non-selected chambers are vented to atmosphere, so that in use a volume of liquid is drawn into the reservoir, equal to the volume of air which has previously been displaced from the selected chamber(s). In the embodiment shown the device 10, Fig. 1, has chambers 46, 44, 42, Fig.4, with respective ports 58, 56, 54 communicating with an annular passage 60, vented at 67, defined by a rotatable collar 64 which carries an elliptical sealing ring 70 in a groove 68. In position 'A' of the ring 70 ports 56, 54 are vented and depression of a spring- biased plunger 22 displaces air through a nozzle 12 from the chamber 46 only, so that on retraction of the plunger 22 an equivalent volume of liquid is drawn into the nozzle 12. By rotating the collar 64 to positions 'B', 'C' fewer chambers are vented and so a greater volume of liquid may enter the nozzle 12. The plunger 22 is biased by an upper spring (28), Fig. 2 (not shown), and by a lower stronger spring 36 and between these has an enlarged diameter portion (34), Fig. 5 (not shown), so that during chamber evacuation the plunger's stroke may be limited by the user sensing the portion (34) engaging the spring 36, but during dispensing a greater force may be exerted to increase the plunger's stroke and ensure complete discharge of liquid. At its upper end the device has a  screw-threaded cap (26) which may be axially moved, also to vary the plunger's stroke. In a second embodiment, Fig.6 (not shown), a nozzle (12a) is connected to a downwardly directed discharge portion (15), having an axial passage which communicates with an annular passage (60a), which extends from the upper part of a rotatable collar (64a), and the lowermost chamber (46a) is closed at its bottom. Various alternative chamber and port arrangements, and collar and sealing ring constructions are also described.
Patent GB-284005-A (GB)
Title: Improvements in or relating to cables for transmitting high frequency electrical energy
IPC: H01B11/18
Filed: 1926-10-19
Abstract: 284,005. Franklin, C. S. Oct. 19, 1926. Air-space cables.-A cable for transmitting high frequency electrical energy, e.g., to or from an aerial for short wave radio telegraphy or telephony consists of an inner conductor 1 located within and air-insulated from an outer conductor 2, which is preferably earthed. The conductors mav be tubular and concentric as shown or may be either or both of channel section. In the concentric arrangement, the inner conductor is supported by porcelain, glass, mica etc. insulators 3 so arranged that the material of the support is not continuous between the conductors in any tranverse plane. Preferably the diameter of the outer conductor is 3.7 times that of the inner conductor.
Patent GB-648373-A (GB)
Title: Improvements in the production of dehydrated mashed potatoes
IPC: A23L19/12
Filed: 1946-08-30
Abstract: Tubular porous shreds, readily reconstitutable to mashed potato, are made by cooking potatoes, including sweet potatoes, preferably after slicing, until completely cooked throughout, whipping or beating the cooked potatoes to a homogeneous aerated mash, forming the aerated mash into narrow strips, e.g. by extruding through holes of 0.125 in. diameter, and removing moisture from the surfaces of the strips at a rate greater than that at which the moisture can diffuse from the interior to the surface, e.g. by passing air at a temperature of 180 DEG -280 DEG F at 150-300 ft./min. through a 0.5-0.75 in. layer of the strips. Water, or a solution or suspension of edible substance, exemplified by skim milk and water containing casein, lactose, sucrose, dextrose, or assimilable calcium, magnesium, iron, potassium and phosphorus containing salts, may be whipped into the aerated mash.  Specification 562,648 is referred to.
Patent GB-1402208-A (GB)
Title: Tyre building apparatus
IPC: B29D30/24
Filed: 1973-06-01
Abstract: 1402208 Pneumatic tyre building machines GOODYEAR TIRE & RUBBER CO 1 June 1973 [28 June 1972] 26160/73 Heading B7C A tyre building and shaping drum 12 comprises at each end a plurality of segments 16 radially movable by a respective segment lifting means 50a, 50b between a collapsed position and a fully expanded position. Each plurality of segments includes a first set of segments 34a and a second set of segments 36a, the segments of the sets alternating and those of the first set being of greater circumferential extent. The ends of the drum are movable axially relative to each other independently of the radial movement of the segments, and each segment lifting lifting means is rotatable relative to shaft 22 to effect radial movement of the associated segments. The segments 16 of the illustrated tyre building drum 12 are movable radially by rotation of helically slotted plates 50a, 50b relative to end plates 20a, 20b by rotation of shafts 83, the slots 54 in the plates coacting with cam followers 52 attached to radially disposed members 45 carrying the segments. The slots are so arranged that on radial movement from the radilly innermost positions of the segments, segments 34a (Fig. 2) are initially moved prior to the segments 36a, and on radial movement from the outermost positions of the segments, segments 36a are initially moved prior to segments 34a. A cord reinforced sleeve 14 having radial extensibility and limited axial extensibility and secured at its end to the plates 20a, 20b covers the segments and is inflatable to toroidal shape by the introduction of air into chamber 160 upon inward axial movement of end plates 20a, 20b by rotation of shaft 28. Each segment (34a, 36a) associated with end plate 20a is axially aligned with a corresponding segment (34b, 36b) associated with end plate 20b, and the corresponding segments have axially directed interleaved fingers. Associated with each pair of corresponding segments is a coverplate 18. The segments can move axially relative to the cover-plates. Secured to the end plates 20a, 20b are respective housings 24a, 24b which carry bead engaging and supporting members 26a, 26b radially outwardly movable by the introduction of pressure air into chambers 116a, 116b and radially inwardly movable, upon venting of those chambers, by springs 123. In operation, a cylindrical carcass is positioned on the drum when the latter is fully collapsed (indicated by 200), and the drum is expanded to position 12<SP>1</SP>. After application of the bead wires (by means not shown), the supporting members 26a, 26b are moved outwardly to anchor the carcass ends between those members and the bead wires. Formation of the beads is completed (by means not shown). The end plates 20a, 20b are now moved axially inwardly while simultaneously air is introduced into space 160 so that the carcass is toroidally shaped. An inextensible belt is now applied. After tyre formation the drum and members 26a, 26b are collapsed.
Patent GB-975373-A (GB)
Title: Measuring instrument for bio-electrical signals and the like
IPC: H03F3/387
Filed: 1962-07-09
Abstract: 975,373. Electromedical apparatus. HITACHI SEISAKUSHO KABUSHIKI KAISHA. July 9, 1962 [July 10, 1961; July 12, 1961], No. 26279/62. Heading A5K. In order to reduce the weight of an electrocardiograph the use of a mains transformer is avoided by connecting the amplifier directly to the supply through a rectifier and suitable voltage control means and to avoid risk to the patient the input terminals are insulated from the amplifier by a coupling transformer. The weight of the latter is also minimized by converting the input to a modulated high frequency which is subsequently demodulated in the amplifier. The basic circuit provides an amplifier 6 connected to the mains supply (100 v.) through a rectifier and voltage-dropping impedance 10, and with its input fed through a transformer 5 from the input terminals 3, 4. The actual input is converted to modulated H.F. by a high frequency introduced into the circuit through a rectifier 1. Interference due to stray capacity in the coupling transformer may be overcome by earthing the secondary winding, but this necessitates the insertion of a transformer-coupled pre-amplifier which may be powered by rectifying the output from an additional winding on the H.F. transformer. In cases where an electric motor is provided for driving a recording mechanism, this motor may be used as the voltage dropping impedance.
Patent GB-1069416-A (GB)
Title: Improvements in or relating to the manufacture of catalysts
IPC: B01J23/42
Filed: 1964-06-25
Abstract: The reductive alkylation of p-aminodiphenylamine with methyl isobutyl ketone in the presence of hydrogen is carried out using a sulfided platinum on carbon catalyst prepared as described in Division B1-B2. The reaction temperature is 180 DEG  C.-185 DEG  C. and the pressure 400-600 p.s.i.g.ALSO:A sulfided platinum on carbon catalyst is prepared by forming a slurry of particulate carbon in an aqueous solution of a divalent platinum compound, treating the slurry with an alkaline reagent to deposit platinum oxide on the carbon, reducing the supported platinum oxide to form reduced platinum on particulate carbon and treating the reduced platinum on particulate carbon in an aqueous slurry with a sulfiding agent, for example hydrogen sulfide. Prior to sulfiding, the reduced platinum on carbon preferably contains from 4% to 8% by weight platinum and the platinum metal preferably has crystallite size less than 100 .  The carbon support material preferably has at least 50% of its particles with diameter less than 20 microns.
Patent GB-242617-A (GB)
Title: Improvements in and relating to the production of unhardened metallic castings in metal moulds
IPC: B22C3/00
Filed: 1925-10-22
Abstract: 242,617. Compagnie GÚnÚrale des Conduits d'Eau. Nov. 4, 1924, [Convention date]. Mould materials.-Moulds are coated internally, wholly or in part, with silicon or a compound thereof with a metal to reduce the conductivity of the mould wall and to increase the tendency of the iron carbide at the surface of the casting to decompose due to dissolved silicon. Coating and lining moulds.-The Specification as open to inspection under Sect. 91 (3) (a) comprises also apparatus similar to that described in Specification 254,328 for lining centrifugal moulds and introducing the, molten metal. This subjectmatter does not appear in the Specification as accepted.