baber/WOPTO huggingface dataset:
Patent GB-1395265-A (GB)
Title: Dual mode angle encoder
IPC: G01D5/249
Filed: 1973-10-25
Abstract: 1395265 Angle encoders LAITRAM CORP 25 Oct 1973 [25 Oct 1972] 49776/73 Heading G4H An angle encoder 10, Figs. 1, 2 (not shown), is connected to logic circuitry which can provide a pulse signal indicating the amount and direction of a rotation relative to a reference position. As described, the encoder is a disc having circumferentially extending transparent/opaque or reflective/non-reflective markings thereon which give rise to signals in Gray code having values in the range 76-435 which correspond to angular displacements 0-359 degrees. The encoder is connected with sensors 16 whose output is fed via a converter 22 to preset a counter 24 which counts clock pulses 36 from this preset value up to 436 or 437, depending on the output from a decoder 26 which stops the clock at the required value. The clock pulses supplied to the counter represent the rotation of the disc (number of degrees plus one), and are fed, e.g. to numeral indicators or a control device. There are two modes of operation determined by a signal C, Fig. 4, from a source 32. This signal is fed to a control circuit 30, Fig. 6 (not shown), together with the most significant bit from 16, which represents the particular 180 degree segment of the disc being sensed. Circuit 30 outputs signals A, B to 22, 24 and a gate 34 respectively. Converter 22 is such that inversion of the most significant input bit results in the inversion of the whole output; gate 34 receives the least significant bit Q1 from 24 and applies a signal Q2 to decoder 26; the maximum count is 436 or 437 according as Q2 is 1 or 0. In the "360 degree mode", operation and output is as above: the output from 22 is inverted and 24 counts to 436 (B=1). In the "180 degree mode", the output pulse train indicates rotation in the ranges 0-179 degrees (I = 0) and 1-180 degrees to the right and left of the 0 degree reference position respectively: here Q2 can be 1 or 0 so that 24 counts up to 436 or 437. Signal I is output to indicate right/left rotation. The encoder may alternatively be a drum or cylinder, and the sensing may be electric or magnetic rather than optical.
Patent GB-1069305-A (GB)
Title: Method of cooling butter corn in continuously operating churns
IPC: G21C19/32
Filed: 1965-11-24
Abstract: In a continuously operating churn, the buttermilk (or a part thereof) separated in the separating cylinder of the machine is cooled in a refrigerator and sprayed, in a rechurning part of the separating cylinder and/or the gravity shaft between churning and separating cylinder, directly over the butter com so as to cool the latter.
Patent GB-1497586-A (GB)
Title: Method for monitoring the surface resistivity of metallised film
IPC: G01B11/06
Filed: 1975-12-05
Abstract: 1497586 Monitoring surface resistivity SIERRACIN CORP 5 Dec 1975 49970/75 Heading G 1A A process for monitoring the production of a transparent metallized substrate, being prepared by vacuum depositing metal on a transparent film, comprises measuring the surface resistivity of the deposit by irradiating it with electromagnetic radiation in the wavelength range 1.5 to 3.0 microns and measuring the percentage transmission or reflection of radiation from the metallized substrate. Light from an incandescent source 30 having a brightness temperature greater than 800‹C is directed through the metallized substrate and an optical interference band-pass filter to a lead sulphide detector 31. The detector output passes via a filter and 2-pole narrow pass preamplifier 35 to a rectifying amplifier 32 where it is compared with a reference signal on line 34. The source 30 may comprise an optical chopper.
Patent GB-1475250-A (GB)
Title: Hydraulic power steering system for an electrically powered vehicle
IPC: B62D5/09
Filed: 1975-12-08
Abstract: 1475250 Power steering systems CATERPILLAR TRACTOR CO 8 Dec 1975 [25 April 1975] 50173/75 Heading B7H An hydraulic circuit for operating steering and implement motors 30, 59, 60 if an electrically powered vehicle includes an accumulator 26 for supplying the steering circuit and means for switching the pump motor 11 to maintain accumulator pressure. The steering valve 27 is supplied via lines 13b, 13c and a branch line 25 passes to the accumulator. A line 32 from the accumulator extends to a charging valve spool 34 housed at 14 with valve spools 33, 58 which control supply to the implement motors 59, 60. Spools 33, 58 are of the open centre type so that with these valves in the neutral position pump fluid passes via passages 35, 37 and groove 36 in spool 33 to groove 38 of spool 34 which is of the closed centre type. When the accumulator is fully charged pressure in line 32 acts via piston 42 on spool 34 and fluid is spilled from groove 38 via passage 39 to exhaust. At the same time the spool 34 actuates a switch 19 switching off the pump motor. Spool 34 is held by spring loaded balls 43 engaging a groove 44 until the accumulator pressure drops and springs 41 return it to the shown position whereupon switch 19 reactuates the motor. Valve spools 33, 58 actuate switches 20, 21 when displaced from their neutral positions to switch in the motor. A flow control valve (Figs. 3, 4, not shown) may be interposed between lines 13b, 13c to control the pressure in the steering system. The implement motors may be lift and tilt cylinders of a fork lift truck.
Patent GB-1410827-A (GB)
Title: Door hinge with hold-open device
IPC: E05D11/10
Filed: 1972-11-01
Abstract: 1410827 Hinges BLOXWICH LOCK & STAMPING CO Ltd 19 Dec 1973 [1 Nov 1972] 50278/72 Heading E2F In a combined hinge and hold-open device, two hinge leaves 1, 2 are connected together by studs 5 for relative pivotal movement about a hinge axis, an arm 13 is pivoted at 10 on one of the leaves (I) about an axis parallel to but spaced from the hinge axis and loaded by spring means 15 to urge the arm 13 about its pivot to hold an arcuate edge of the arm in engagement with a roller 17 rotatably mounted on the second leaf 2 the arcuate edge of the arm extending circumferentially about the hinge axis and being provided with two or more projections of part-circular outline 18, 19, 20 over one or more of which the roller 17 rides as the hinge leaves 1, 2 are brought to a fully opened position. The roller 17 is provided with a knurled or serrated peripheral surface.
Patent GB-1139460-A (GB)
Title: Milk meter for milking machines
IPC: G01F5/00
Filed: 1967-11-08
Abstract: 1,139,460. Sampling liquids. T. L. SEABORNE. 8 Nov., 1967, No. 50746/67. Heading B8N. A device for sampling milk comprises an inlet pipe 1 extending upwardly through a base 2 and a conical member 12 which is covered by a bowl 4, a cap 8 rotatable on the inlet pipe 1 so as to distribute the milk over the conical member, a sector-like chamber 15 at the lower end of the conical member for collecting a fixed and known proportion of the milk flowing over the conical member, and a measuring cylinder 19 for measuring the quantity of milk collected in the chamber 15. The cap 8 is provided with a stem 9 having helical vanes 10 which cause the cap to be rotated under the flow of the incoming milk; the cap is adapted to rise under the pressure of the milk so that it taps the bowl 4 and thereby gives an audible indication that milk is flowing. The milk collected in the measuring chamber may be drained off into a container for analysis via a valve 20 or, by operation of the same valve, be returned via a pipe 22, into the inlet pipe 1. The device is mounted on a plate 24 and may be adjusted to a true vertical position by means of a plumb bob 25.
Patent GB-1153057-A (GB)
Title: Improvements relating to Machines for Harvesting Root Crops
Inventor: TIMMIS JOSEPH
IPC: A01D17/10
Filed: 1966-11-12
Abstract: 1,153,057. Root crop harvesters. J. TIMMIS. 15 Jan., 1968 [12 Nov., 1966], No. 50810/66. Heading A1F. A machine for harvesting potatoes or other root crops comprises a frame carrying a share or digging tool 12 which digs up the crop as the machine moves forward, power driven discs 14 with vanes 14a arranged on either side of the share 12 and co-operating with it in guiding the crop to a power driven endless band elevator 40 and hence to a riddle (58), Fig. 3 (not shown). The vanes 14a on the discs are of V-section and are arranged at relative angles of 90 degrees to each other on the inside face. A haulm cutting disc 21 mounted on a countershaft 19, situated ahead of one of the ground wheels so the haulm is cut in one travel and the crop lifted in the next. The discs 14 are protected by a shielding device 16, Fig. 2 (not shown) consisting of leading member (16a) with a digging point 16d), base member (16b), together with a pair of side plates (16c).
Patent GB-1200895-A (GB)
Title: Improvements in electrically operated drive systems
Inventor: GURWICZ DAVID
IPC: H02P5/68
Filed: 1966-11-14
Abstract: 1,200,895. Control of two D.C. motors. SEVCON ENG. Ltd. and RANSOMES SIMS & JEFFERIES Ltd. 13 Nov., 1967 [14 Nov., 1966], No. 51010/66. Heading H2J. A vehicle is enabled to move along a curved path by varying the relation between the amounts of power supplied to two electric motors which are mounted on co-axial shafts coupled with respective driving wheels of the vehicle, each motor being supplied with intermittent current having a variable on-off ratio. A pulse generator is associated with each motor and controls the mean power derived through static switches from a D.C. source such as a battery. A differential unit accepts a variable amplitude signals from an accelerator unit and supplies the pulse generators with signals which depend upon the accelerator output voltage and the position of the steering mechanism. If this mechanism is adjusted to provide an amount of turn, one pulse generator receives a larger signal than the other in proportion to the amount of turn demanded. The accelerator unit comprises potentiometer VR1 with limiting resistor R1, transistors TR1, TR2, being supplied with common base potential from the wiper arm of the potentiometer. A potentiometer VR2 has its wiper arm mechanically coupled to the steering mechanism of the vehicle, the same signal being fed to both pulse generators A, B, when this arm is in midposition. Any displacement of the wiper arm from the mid-position of potentiometer VR2 will replace the signal to one side and increase it to the other. In a modification, the wiper arm of potentiometer VR2 is connected to the centre tap of the potentiometer resistor so that displacement of the arm reduces the input voltage to one of the pulse generators whilst the other input voltage remains constant. Adjustment of the steering mechanism thus reduces the power supplied to the motor which is inward with respect to the centre of curvature of vehicle path, the power supplied to the other motor remaining constant. The pulse generators may be controlled in accordance with the armature voltage of the motors. In another embodiment, the potentiometer VR2 is in the emitter circuit of the transistors TR1, TR2, the displacement of the wiper arm from the central position increasing the emitter current of one of the transistors whilst that of the other transistor remains constant. The transistors TR1, TR2, may be supplied from a high frequency source, the potentiometer VR2 being replaced by ganged capacitors linked with the steering mechanism and adapted for differential adjustment. Alternatively, inductor coils co-operate with ferrite rods linked with the steering mechanism. In other arrangements, the steering mechanism is associated with optical wedges associated with photo-cells, or a magnet coupled to the mechanism co-operates with Hall effect semiconductor devices.
Patent GB-1136618-A (GB)
Title: Improvements in and relating to magnetic thin films
IPC: H01F41/14
Filed: 1966-11-15
Abstract: 1,136,618. Magnetic structures. INTERNATIONAL BUSINESS MACHINES CORP. 15 Nov., 1966 [20 Dec., 1965], No. 51032/66. Heading H1H. [Also in Division C7] A magnetic element is made by depositing an adhesive and nucleation layer, e.g. Cr, Al or Ag, on a substrate, e.g. glass or Ag-Cu plate, vapour depositing a silicon monoxide layer, exposing it to air to alter the oxidation state of the silicon monoxide and then vapour depositing a Ni-Fe-CO or Ni-Fe layer in a magnetic field. The substrate may be heated, polished by lapping and cleaned with alcohol and acetone. The vapour deposition apparatus may be as described in Specification 881,550. It is stated that this process produces an element having uniform magnetic properties.
Patent GB-1213304-A (GB)
Title: Apparatus for printing price tickets or other stock
IPC: B41K3/48
Filed: 1967-11-09
Abstract: 1,213,304. Selective printing. DENNISON MFG. CO. Ltd. 9 Nov., 1967 [9 Nov., 1966 (2)], No. 51085/67. Heading B6F. Machines with multiple sets of types.-A selective printer for printing alternate pairs of lines on tickets D<SP>1</SP>, Fig. 2, which are severed during a printing cycle from a ticket stock DS<SP>1</SP> includes a printing head having two sets of types 1411, 14111 each comprising two sets of a plurality of endless bands B<SP>1</SP>, Fig. 7, for printing alternate lines 11, 31 and 2<SP>1</SP>, 4 on the trailing edge of a severed ticket D<SP>1</SP> and the leading edge of a following ticket D<SP>1</SP> which is still integral with the ticket stock, such that, when the tickets are severed consecutively they have the information printed along contiguous lines bearing data as though it had been printed by a single printing head in which the bands are arranged in consecutive order 1<SP>1</SP>, 2<SP>1</SP>, 3<SP>1</SP>, 4<SP>1</SP>. Index setting arrangements.-The endless bands B<SP>1</SP>, Fig. 7, which are trained over upper and lower pulleys (not shown) are set by knobs K<SP>1</SP> associated with the shafts of the upper pulleys, which jointly with the lower pulleys are mounted in the printing head carried on a bellerank arm 44<SP>1</SP> which is pivotally mounted on a shaft 46<SP>1</SP> and oscillated for impression by a cam 41<SP>1</SP>, Fig. 2, or cams 41<SP>1</SP> and 42<SP>1</SP> depending on whether single or double tickets are being printed.  Line feeding arrangements; web feeding, guiding and cutting arrangements.-The ticket stock DS<SP>1</SP>, Fig. 7, is drawn off a scroll magazine (13<SP>1</SP>, Fig. I) and advanced between guides 12<SP>1</SP> below the print head (14<SP>1</SP>) by a finger 17 which is actuated by a cam controlled lever 33<SP>1</SP>, Fig. 2, and which engages an aperture in the ticket stock DS<SP>1</SP>. Following imprinting of the stock along lines 11, 3<SP>1</SP> a ticket DS<SP>1</SP> is severed from the stock DS<SP>1</SP> by a knife 18<SP>1</SP> which is oscillated by a cam controlled bellcrank 53<SP>1</SP> and the severed ticket D<SP>1</SP> which has its lines 2<SP>1</SP>, 4<SP>1</SP> printed in an earlier part of the printing cycle is ejected by a cam controlled finger 19<SP>1</SP>, the ticket stock being advanced by the finger 17 below the printing head such that the lines 11, 3<SP>1</SP> and 2<SP>1</SP>, 4<SP>1</SP> are printed on the respective pair of subsequent tickets on the stock.
Patent GB-1102968-A (GB)
Title: Magnetic composition and recording medium
IPC: G11B5/71
Filed: 1965-12-03
Abstract: 1,102,968. Magnetic compositions. SONY CORPORATION. 3 Dec., 1965 [5 Dec.. 1964], No. 51397/65. Heading HlH. A magnetic composition comprises powdered magnetic material and a binder together with 0À5-20 parts by weight per 100 parts magnetic material of one or more fatty acid esters produced from a monohydroxy alcohol having at least 14 carbon atoms and one or more monobasic fatty acids having 2-18 carbon atoms. The acid may be saturated, or have a degree of unsaturation up to an iodine value of 10. Esters exemplified are stearyl butyrate, stearyl stearate, stearyl laurate, and tetradecyl caprilate. The composition may be dispersed in a solvent, e.g. toluene or methyl ethyl ketone, and coated on a base, e.g. a polyester film, to form magnetic recording tape, e.g. 10Á thick. The magnetic material may be acicular y-Fe 2 O 3  or an alloy of 30-70% Fe, 40-80% Co and 0-20% Ni by weight. The binder may be P.V.C., polyvinyl acetate, polybutyl acrylate, or copolymers thereof, polyurethane, epoxy resin, or mixtures thereof. Plasticizers, e.g. dioctyl phthalate or cebatate may be included.
Patent GB-1367658-A (GB)
Title: Multi-stage evaporator and condenser installation
IPC: B01D3/06
Filed: 1971-11-05
Abstract: 1367658 Multi-stage flash evaporator; venting of inert gases FRIED KRUPP GmbH 5 Nov 1971 [6 Nov 1970] 51567/71 Heading B1B Inert and other uncondensable gases are withdrawn from flash chamber 3 of multistage flash evaporator and condenser system 10 by low pressure steam jet ejector 71 activated by water jet ejector 51, which itself is actuated by water supplied by pump 41, the motive power being steam with entrained uncondensable gas drawn along 72 from chamber 1; the mixture of gases and water, discharged from the ejector 51, flows to tangential separator 60, and part of the separated water is recirculated to pump 41 from reservoir 61. The liquid to be distilled, e.g. sea water, is pumped into the system through conduit 29, and flows through the condenser 14 in chamber 3 before mixing via 31 with the more concentrated brine already in chamber 3. The distillate, i.e. desalinated water, produced in the system is collected in troughs 15, and withdrawn through conduit 26.
Patent GB-1524860-A (GB)
Title: Plastics encapsulated semicondusctor device
IPC: H01L23/495
Filed: 1975-12-18
Abstract: 1524860 Semiconductor device assembly ITT INDUSTRIES Inc 18 Dec 1975 [20 Dec 1974] 51826/75 Heading H1K An encapsulated diode #-network, Fig. 1, comprises three diodes 1-3, preferably of PIN type, mounted anode side down on the wedge shaped ends 21-23 of rectangular section leads with the remaining circuit connections made by wires 41-43 as shown, the narrowed sections of the leads serving to anchor them in the plastic encapsulant.
Patent GB-1425460-A (GB)
Title: Gas-driven gas-bearing turbines
IPC: F01D1/34
Filed: 1972-11-14
Abstract: 1425460 Bearings AMALGAMATED DENTAL CO Ltd 18 June 1973 [14 Nov 1972] 52580/72 Heading F2A [Also in Division F1] The invention relates to a gas driven, gasbearing turbine and is described with reference to a dental turbine which comprises a stator casing 1 and a rotor 2 supported therein by two bearing members 15, 16 each independently and resiliently mounted in the stator casing by means of a pair of resilient support members 23 encircling the bearing member, each bearing member 15, 16 being of one-piece construction and provided with one or more apertures 26 extending from the outer to the inner surface thereof. The rotor 2 is formed with recesses which define blades 9 to which air under pressure is directed through passage 11 and nozzle 13 formed in the stem 12 which is secured to the stator casing 1, the air discharging from the blades through exhaust passage 14. Each bearing member 15, 16 is formed at its outer surface with annular grooves 22, 24, the resilient support members 23 being disposed in the outer grooves 22 so as to form a sealed chamber to which air under pressure is supplied from the passage 11 through bores 18, 19 the air passing from the chamber through bores 26 extending from the centre groove 24 to the bearing surface. The bearing members 15, 16 are formed of tungsten carbide or silicon nitride, and the support members 23 may be 0-rings as shown or L-shaped, U-shaped or V-shaped gaskets. One end of the stator casing is closed by a cap 5, the other end being open whereby a tool may be engaged in the bore 3a of the rotor.
Patent GB-1537469-A (GB)
Title: Disintegrable member for controlling flow between pressure chambers
IPC: F02K9/28
Filed: 1975-12-23
Abstract: 1537469 Closure plugs for combustion chambers IMI KYNOCH Ltd 8 Dec 1976 [23 Dec 1975] 52618/75 Heading F3A A plug 20 built up of a plurality of discrete segments 22, 24 resists the pressure from a boost rocket motor 12 but is burst into its individual segments when subjected to the pressure from a cruising motor 10. One of the segments is more easily removable than the others.
Patent GB-1334538-A (GB)
Title: Indicating device
IPC: G01R1/08
Filed: 1970-11-05
Abstract: 1334538 Indicating device AGFA-GEVAERT A G 5 Nov 1970 [5 Nov 1969] 52687/70 Addition to 1329258 Heading G1J A modification of the indicating device of the parent Specification 1329258 comprises a rotatable pointer 5 having an end portion 6 parallel to the axis of rotation, two scales 11 and 12, and two reflecting surfaces 34, 35, the free end 6 of the pointer appearing to move laterally along a respective one of the scales when viewed through one of the reflecting surfaces. The two prisms 30, 31 may form parts of a single prism, Fig. 1 (not shown). Sliders 37 and 38 are provided and may be transparent and coloured or opaque. Alternatively a single slider 21, Fig. 1 (not shown) may be provided in front of an illuminating lamp 20 or lamps which are provided in a detachable housing 19. The scales may also be laterally slidable and a scale may slide as an integral unit with the corresponding slider. The faces of the prisms adjacent the pointer end may be cylindrical and the reflecting surfaces may be arranged such that the two scales are visible from opposite sides of the device. The device may include a moving coil unit 4. In a modification the edge of intersection of the prism faces 32 and 34 and for 33, 35 may be levelled and a scale provided behind the or each level, which scales may be in addition to or instead of scales 11 and 12.
Patent GB-1311023-A (GB)
Title: Water-soluble reactive xanthenium dyestuffs and process for their manufacture
IPC: C09B62/443
Filed: 1970-11-05
Abstract: 1311023 Reactive xanthene dyes FARBWERKE HOECHST AG 5 Nov 1970 [6 Nov 1969] 52690/70 Heading C4P The invention comprises reactive xanthene dyes of the general formula  wherein R and R<SP>1</SP> are H, halogen, OH, alkyl, alkoxy, carbonyl or sulphonic acid, R 1  and R 2  are H or alkyl, optionally substituted by halogen, OH, carbonyl, sulphonic acid, phenyl, -OSO 3 H or -NH-acyl, or R 1  and R 2  together with the N atom may form an alkylene imine ring which may contain a further hetero atom, R 3  is H or alkyl, A is a mononuclear or binuclear aromatic radical, W is a divalent bridge member, Y is a group -N(R 4 ) q -SO 2 -CH=CH 2  or -N(R 4 ) q -SO 2 -CH 2 CH 2 -Z, wherein Z is OH or an organic or inorganic radical which can be split off by an alkaline agent to form a vinyl group, R 4  is H or alkyl, m and n are 0, 1 or 2, q is 0 or 1 and p is 1 or 2. Y is preferably phenylene. They are prepared by condensing a 3,6- dihalogeno xanthene compound with at least one mole of an amino compound of the general formula wherein R 3 , W, A, R 4 , m, n, p and q are as above or with an amine NH(R 1 )R 2  in aqueous, aqueous-organic or organic medium at 0-120 C. and then reacting the mono-condensation product obtained with at least one mole of an amine NH(R 1 )R 2  or the amine first mentioned in aqueous, aqueous-organic or organic medium at 70-200 C. in presence of an acid binding agent. When the product dye contains a terminal #-hydroxy ethyl group this may be esterified to -O-SO 3 H, -O-PO 3 H 2 , -O-acyl or halogen, then optionally reacted with an alkaline agent to produce the terminal vinyl group which may then be reacted with thiosulphuric acid, a dialkylamino or phenol to form dyes where Z is -S-SO 3 H, -N(alkyl) 2  or -O-C 6 H 5 . The dyes give violet and blue-red shades on natural or regenerated cellulose fibres, wool, silk, polyamides, polyurethanes and leather.