baber/WOPTO huggingface dataset:
Patent GB-949455-A (GB)
Title: Light metal piston with bimetal control members
IPC: F02F3/04
Filed: 1962-12-21
Abstract: 949,455. Pistons. KARL SCHMIDT G.m.b.H. Dec. 21, 1962 [Dec. 28, 1961], No. 48450/62. Heading F2T. In a light metal piston having expansioncontrolling inserts 2 of a metal having a lower coefficient of thermal expansion than the light metal, the inserts are located in pairs on each side of the gudgeon-pin bosses 3 on the inside of the piston skirt and the portions 5 of the skirt wall between the inserts 2 are substantially thicker than the portions 1 adjacent the inserts. Openings 4 in the inserts 2 are filled with light metal when the piston is cast.
Patent GB-1189318-A (GB)
Title: Method of Controlling the Temperature in Refrigerating Equipment
Inventor: HOLZER WALTER
IPC: F25D29/00
Filed: 1967-10-25
Abstract: 1,189,318. Automatic temperature control systems. W. HOLZER. Oct.25, 1967 [Oct. 26, 1966; April 21, 1967], No.48550/67. Heading G3R. [Also in Division F4] In a method of regulating the temperature of refrigerating equipment the supply of refrigerant is regulated in a progressive manner by means of both a temperature sensor and to a signal representative of the refrigerant supply. In Fig. 1 the speed of a compressor motor 7 is adjusted between two limits by an electronic control circuit 6 the output of which is dependent upon an evaporator temperature sensing thermistor 1 the signal from which is compared with a reference 3, thus producing an error signal. This signal is also compared with a further signal representative of motor speed for example from a tachometer 5. Below a determined motor speed e.g. 50% full speed, the arrangement may work in an on-off manner. In an alternative or additional arrangement, Fig.2, the signal from a pressure transducer 8 in a by-pass line is compared with the error from a space temperature sensor - reference circuit 14, 3 which controls a by-pass valve 10. A defrosting circuit may be incorporated under the control of a time switch 13 which dis-connects temperature sensor 14 and substitutes evaporator sensor 1, which is adjusted to a higher temperature to control defrosting by means of a heater 15 or hot gas supply. Where two temperature sensors are employed i.e. for space and condenser temperatures they may be connected in series together with a reference resistor (21) Fig.4 (not shown) the junction being connected to a threshold amplifier (22). The space sensor 14 should have a higher resistance/temperature co-efficient, preferably about three times that of the evaporator sensor 1. A separate evaporator for ice cubes or deep freezing may be added to the system.
Patent GB-1114035-A (GB)
Title: Fibrous sheet material and method of making same
IPC: D04H1/48
Filed: 1966-11-02
Abstract: A method of making a non-woven fabric comprises the steps of forming a fibre web, needling the web, compacting the web by applying pressure to both sides, saturating the web in a liquid bath, and kneeding and consolidating the web by advancing it under tension, and subjecting it to mechanical compressive shrinkage.  The web may be formed by cross-laying carded or air-laid webs and may or may not incorporate a woven scrim.  The compaction of the web is preferably effected on a calender, and the mechanical compressive shrinkage is effected by passing the web through water or steam and laying it on an endless blanket as the blanket passes over a roller; the web and blanket are then passed round an adjoining steam heated roller, the web being in contact with the roller.  The blanket is preferably a pile fabric, the web being in contact with the pile surface.  The web is preferably saturated by passage through a heated water bath; the saturation being followed by mangling between a steel roll and a resilient, e.g. rubber, roll, and drying by passsage over heated polished surfaced cans.  In a preferred embodiment, the web is formed, needled, compressively shrunk, calendered, compressively shrunk a second time, saturated, and compressively shrunk a third time.  The woven scrim may be replaced by a plastic film.  The web may be formed of such fibres as cotton, wool, rayon, polyolefines, polyesters polyamides and acrylics.  The fibres preferably have a length between 1 1/2 and 2 inches, denier between 1 1/2 and 3, the needling being to a density between 1000 and 5000 punches per square inch, to shorten the fibres to between 3/8 and 3/4 inch, at least 40% being shorter than 1/4 inch and at least 15% shorter than 1/4 inch. The density of the web after calendering is preferably between 0.3 and 0.4 gm/cc.
Patent GB-1329867-A (GB)
Title: Polyphase on-load tap-changers for regulating transformers
IPC: H01H9/00
Filed: 1970-10-16
Abstract: 1329867 Transformers SMIT NIJMEGEN ELECTROTECHNISCHE FABRIEKEN NV 16 Oct 1970 [16 Oct 1969] 49350/70 Heading H1T Main windings 1 of a three phase transformer are connected to the star point 17 through a regulating winding 2 and a circular three phase diverting switch 7. Each regulating winding 2 has two series of tappings 3 and fixed contacts 4 connectible through bridging contacts 5 to fixed contact strips 6. The regulating range may be doubled using a change-over selector (18, Fig. 2, not shown) for buck and boost regulation, and increased further using another change-over selector 35 (Fig. 5) to add coarse voltage regulation to the fine regulation windings 2. The diverting switch 7 has a circular set of six fixed contacts 8-13, and a set of movable contacts comprising three main contacts 15 and six auxiliary contacts 16, the latter connected to the star point 17 through transition resistances 14. An asymmetric variant of the diverter switch with only three auxiliary contacts (34, Fig. 4, not shown) is described, and Fig. 5 shows a diverter switch 39 with "double interruption" provided with a set of twelve fixed contacts 40-51 co-operating with three sets of movable contacts, each comprising two main contacts 52 connected in series and two pairs of auxiliary contacts 54 connected in series through transition resistances 53. The two resistances may be replaced by a single resistance, and transition resistances may also be arranged to be stationary externally of the switch (Figs. 3, 4, 7, not shown). In principle the number of fixed contacts in the diverter switch is an integral multiple of the number of phases, as is the number of movable main contacts and number of auxiliary contacts.
Patent GB-1203375-A (GB)
Title: Forage harvester with variably inclined conveyor
IPC: A01F29/00
Filed: 1968-10-18
Abstract: 1,203,375. Forage harvester. INTERNATIONAL HARVESTER CO. 18 Oct., 1968 [19 Oct., 1967], No. 49535/68. Heading A1F. A forage harvester comprises a main unit 12 including processing means 24, an exchangeable harvesting attachment 16 which delivers crop rearwardly at a predetermined angle 98, and conveying means 38 on the unit 12 arranged to be automatically positionable in alignment with the crop delivered by any of a series of attachments 16. The conveying means comprises rear rollers 40, 42 and front rollers 44, 46 wherein the roller 40 is mounted on a fixed axis and the roller 42 is mounted on a shaft 50 slidable in slots 52, being downwardly spring loaded. The roller has a shaft 54 journalled in links 56, 62 and the roller 46 has an axle 58 journalled in links 60 pivoted on the shaft 50, and slidable in the links 62. The attachment 16 is secured by adjustable straps 82, apertures 104 in its frame elements 100 engaging the shaft 54 to align the conveying means 38. The attachment 16 is intended for harvesting row crops, and for non-row crops an alternative attachment (14), Fig. 1 (not shown), is described.
Patent GB-1247290-A (GB)
Title: Removal of iron from iron-contaminated hydrocarbon oil
Inventor: LANGLOIS GORDON E
IPC: C10G29/00
Filed: 1969-10-09
Abstract: 1,247,290. Solvent extraction of iron from hydrocarbon oils. CHEVRON RESEARCH CO. 9 Oct., 1969 [10 Oct., 1968], No. 49721/69. Heading C5E. Iron contaminant is selectively removed from hydrocarbon oil contaminated by iron, nickel and vanadium, by contact, for 1 min.-2 hours at 0-300‹ F. and 0-2500 p.s.i.g., with an aqueous solution containing 50 p.p.m.-2% by weight of cyanide ion. The aqueous solution can be of sodium cyanide and can also contain carbonate and halide ions. A suitable solution comprises the "foul water" stream collected from stripping units in which gases such as NH 3  and H 2 S are separated from catalytic cracking, hydrogen processing, denitrification and desulphurization effluents and which contains cyanide ion, NH 3  and H 2 S. Suitable feeds are crude oils, deasphalted oils, shale oils, residue and topped crudes and can be concentrated by distillation. Propane, pentane or xylene can be added to either the oil or the aqueous solution as a diluent.
Patent GB-1245318-A (GB)
Title: Induction motor speed control arrangement
Inventor: MAZDA FRAIDOON F
IPC: H02P27/06
Filed: 1969-10-14
Abstract: 1,245,318. Control of A.C. motors. STANDARD TELEPHONES & CABLES Ltd. 14 Oct., 1969, No. 50497/69. Heading H2J. A shaded-pole induction motor has a bifilar wound, centre-tapped stator winding W, a pair of electronic switches being connected to opposite ends of the winding and arranged to be alternatively conductive. One power terminal is connected to the centre tap whilst the other terminal is connected to both switches. Each switch may comprise a pair of parallel-connected, oppositely-poled thyristors or a single bidirectional thyristor. In one embodiment, a rectifier bridge is provided between the power terminals and the switches which each comprise a single thyristor, the bridge including two thyristors for phase control of the supply voltage. A firing circuit for the switching thyristors, which have their cathodes in common, comprises a unijunction transistor forming part of a free-running blocking oscillator, one base of which receives negative signals synchronized to the input frequency. A resistive capacitive network provides a trigger voltage for the transistor which breaks down to discharge the capacitor whereby a bi-stable circuit changes state. The latter circuit comprises a pair of transistors at whose collectors are developed two square wave firing signals displaced by 180 degrees, Fig. 3 (not shown). In an inverter arrangement with a smoothing capacitor, a trigger diode TD1 forms part of a free running oscillator. When capacitor C2 is charged to the break-over voltage of the diode TD1, a pulse is applied to a bi-stable circuit X2, X3 changing its state and so reversing the state of thyristors TH1, TH3. The voltage across the motor depends upon the voltage E, F, which also determines the motor frequency. Alternative firing circuits utilize R.C. circuits R4, C4, and R5, C5, and trigger diodes TD2, TD3. Thyristors TH1, TH3 are fired alternatively, the charge on capacitor C1 being reversed. Resistors may be introduced in series with each trigger diode, the resistors R4, R5, being each shunted by resistor-diode combinations. Resistors R4, R5, may be adjusted for equal conduction time of both thyristors TH1, TH3. A capacitor in parallel with the capacitor C5 prevents simultaneous firing when the motor is switched-on. Afterwards this capacitor is charged to reverse bias a diode which isolates it from the remainder of the circuit. The thvristors TH1, TH3, may be associated with auxiliary thyristors whereby the main thyristors receive gate drive for the whole 180- degree conduction period, Figs. 9, 10 (not shown).
Patent GB-1243090-A (GB)
Title: Cage for rolling bearings
IPC: F16C33/38
Filed: 1968-10-28
Abstract: 1,243,090. Bearing cages. SVENSKA KULLAGERFABRIKEN A.B. 28 Oct., 1968 [27 Oct., 1967], No. 51029/68. Heading F2A. A cage for a rolling bearing having an outer and inner race 1 and 2 and a plurality of rolling elements disposed therebetween comprises two similar members 4a, 4b, which are joined together to provide a plurality of pockets for retaining the rolling elements and a collar 5 is provided around the periphery of the cage members which has a constant axial width greater than the maximum axial extent of the pockets. Lubricant passages 7 and 8 facilitate passage of grease from spacers around the pockets.
Patent GB-1463690-A (GB)
Title: Roof ventilator
IPC: B60H1/26
Filed: 1974-11-26
Abstract: 1463690 Ventilators MEYERS-TAYLOR PTY Ltd 26 Nov 1974 [17 Dec 1973] 51082/74 Heading F4V [Also in Division E2] A ventilator for mounting on the roof of a caravan comprises a cover supported above an apertured base 26 by spaced struts, flaps pivotally mounted on the edges of the cover to control airflow through openings between the struts and manually operable controllers one for each flap for setting the position thereof. In the form shown, the cover is square and four independently operable flaps are provided. Each flap includes members 20, 23 spaced to define a ventilation passage to permit flow of ventilating air even in the "closed" position of the flap. The struts may be vertical or obliquely inclined, as shown, to the cover. Each opening is covered by an insect screen 30. Each controller 27 includes a manually operable cap 33 rotatably mounted on a body 32 which is attached to the base 26, and an elongate member 39, 28 which is incompressible and inextensible longitudinally and which is secured at one end to the cap 33, is passed through a circumferential passage 38 in the cap 33, through a guide tube 40 which extends through the insect screen 30 or the base 26, and is pivotally secured at its other end 29 to the flap. The member 28, 39 may be a closely wound wire spiral with a central wire to render the spiral inextensible. Upon rotation of cap 33, the member 28, 39 is expelled from or retracted into tube 40 to open or close the flap respectively. The cap 33 and body 32 are releasably fastened to one another by a screw 35 to permit easy removal of the member 28, 39. The cap 33 may be held in adjusted positions by a ball 37 engaging co-operating recesses, or a bolt bearing on member 39.
Patent GB-1156378-A (GB)
Title: Organic Isocyanates and a Process for the Production thereof
Inventor: ZENER KARL-FRIEDRICH
IPC: C07C263/04
Filed: 1967-11-10
Abstract: 1,156,378. Organic isocyanate derivatives of carbamates. FARBENFABRIKEN BAYER A.G. 10 Nov., 1967 [30 Nov., 1966], No. 51192/67. Heading C2C. N - Substituted - N - isocyanato methyl carbamic and thiocarbamic acid esters of the formula wherein R represents a branched or unbranched, saturated or unsaturated, aliphatic, cycloaliphatic or araliphatic radical with 1 to 12 carbon atoms, optionally substituted by a chlorine atom or cyano radical, X represents oxygen or sulphur, R<SP>1</SP> represents a branched or unbranched, saturated or unsaturated aliphatic, cycloaliphatic, araliphatic or aromatic, monovalent or divalent radical with 1-15 carbon atoms, optionally substituted by a chlorine atom or cyano radical, and n is 1 or 2, may be obtained by reacting an N-substituted-N- chloromethyl carbamic or thiocarbamic acid ester of the formula with an alkali or alkaline earth metal cyanate at a temperature of 30-230 C. in the presence of an inert solvent. Suitable solvents in which the reaction may be carried out include hydrocarbons, chloro- or nitro-substituted hydrocarbons, nitriles, esters, ethers, sulphones, amides and ketones, and inorganic solvents such as liquid sulphur dioxide, or mixtures of two or more solvents may be employed.
Patent GB-1312935-A (GB)
Title: Suppressing interference in receivers of electrical signals
IPC: H04H20/88
Filed: 1970-10-29
Abstract: 1312935 Interference suppression in radio receivers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 29 Oct 1970 [1 Nov 1969] 51447/70 Heading H4L The output of the detector 3 of a radio receiver is supplied via an emitter follower 4, field effect transistor 5 which is blocked in the presence of noise pulses, resistor R 1  and capacitor 17 to the audio-frequency stages, a capacitor C providing de-emphasis. Interference pulses d, Fig. 2 I, are selected by a detector 7 coupled to the I.F. amplifier 2, for example, as described in Specification 1,279,756, and trigger a monostable device 8 providing pulses, Fig. 2 II, to block the gate 5. These pulses are also supplied to a second mono-stable device 9 which is triggered by the trailing edge of the pulses from 8 to produce negative pulses, Fig. 2 III, which block a normally conducting field effect transistor 10. Fig, 2 IV shows the output of the gate 5, a voltage step #E occurring at the end of the cut-off period of the gate. At this time the gate 10 is blocked and a pulse of amplitude #E, Fig. 2 V, is supplied via an emitter follower 12, capacitor 16 and resistor R 2  to the de-emphasis capacitor C. It is shown that by a suitable choice of R 2  the charge on capacitor C is modified to approximate more closely to the desired signal output. A further improvement may be effected by taking the output from a tap on resistor R 2 .
Patent GB-1173766-A (GB)
Title: Improvements in the Manufacture, Filling and Sealing of Containers
Inventor: OLLIER JACQUES GASPARD HONORE
IPC: B65B9/04
Filed: 1966-11-23
Abstract: 1,173,766. Forming plastics containers. J. G. H. OLLIER, G. F. GROSSHANS and R. G. MASSON. 23 Nov., 1966 [12 Sept., 1966], No. 52386/66. Heading B5D. [Also in DivisionB8] A machine, for producing yoghurt containers from thermoplastic sheet, forms cup-like containers, punches out and replaces the bottom of the cups with a peelable closure the cups being then filled and sealed. When in use the container is inverted so that its narrow end is uppermost and the peelable closure is inverted so that its narrow end is uppermost and the peelable closure forms a lid. In the embodiment shown thermoplastics web, drawn from a reel 1 and heated by a unit 4, is moulded by a die, assisted by compressed air or vacuum in a unit 5. At station 6 a punch (6c), Fig. 2 (not shown), co-operates with a matrix (6b) to cut out the cup bottoms 6a. A peelable cover 7a, formed from thermoglueing aluminium sheet drawn from a reel 19, is simultaneously punched out and welded to the container bottoms at station 7. Upper covers 9a heat formed at station 17 from a thermoplastic web 14a are put into position on the containers at station 9, the containers being previously filled at station 8. The covers are welded to the containers at station 10, and the completed container is detached from the web by knives or punches (11b), Fig. 3 (not shown), at station 11. Several containers in a longitudinal, and/or transverse direction may be formed simultaneously.
Patent GB-1058279-A (GB)
Title: End fittings for helically convoluted flexible electric conduits
Inventor: WILSON JOHN WILLIAM
IPC: H02G3/06
Filed: 1964-12-30
Abstract: 1,058,279. Pipe couplings. SUPERFLEXIT Ltd. Dec. 22, 1965 [Dec. 30, 1964], No. 52831/64. Headings F2G and F2P. An end fitting for a helically convoluted conduit of electrically insulating material having an internal wire reinforcement at 7 and an externally wound cord of nylon or similar material has a nipple 4 designed to screw into the conduit and a tubular ferrule 5 of which the leading edge is dimpled or turned inwardly over an annular projection 10 on the nipple, the nipple being formed with annular shoulders against which the ends of the conduit and ferrule respectively abut, the ferrule gripping the conduit either directly or indirectly to secure it in position. The leading end of the nipple is tapered and it is helically grooved to receive the wire reinforcement at 7. In the embodiment shown in Fig. 7, the conduit is covered with a braided wire screen under an outer sheath of a polymer material, the former being gripped at 17 under the turned-in forward end of the nipple whilst the latter is accommodated in the outer annulus inside the ferrule. In other embodiments (Figs. 4 and 6, not shown) conduits without sheath above or without the screen and the sheath, are accommodated with a packing piece under the ferrule to replace the sheath or on a nipple with a smaller diameter shoulder at 10 assembly with a smaller sheath respectively. For assembly, one turn of the internal wire and two or-more of the external cord are first removed.
Patent GB-1087550-A (GB)
Title: Improvements in or relating to nitro-cellulose production
IPC: B01F29/63
Filed: 1964-12-30
Abstract: Continuous nitration of cellulose by a sulphuric acid/nitric acid nitration agent mixture is effected in apparatus comprising a cylindrical drum 1 (see Fig. 1) capable of rotation about its longitudinal axis and adapted to operate with its longitudinal axis in the horizontal plane. The drum terminates in end portions of decreasing cros-section, which end portions 9 and 10 serve for the continuous introduction and for the continuous removal of nitration reactants into and from the drum, respectively. Connected in sealed fashion to the internal wall of the drum is a continuous helical strip 14 (see Figure 2) which is open at its central axial region and which has turns of constant pitch within the cylindrical portion of the drum and a turn or turns 16 and 18 of varying pitch extending into the end portions of the drum; the <PICT:1087550/C3/1> <PICT:1087550/C3/2> helical strip ensures that the reactants undergo translatory movement axially of the drum and that introduction and removal of reactants into and from the drum take place at a constant rate. Associated with the internal wall of the drum and with the helical strip are agitation members (not shown) for establishing a turbulent state within the reactants in the drum in a plane perpendicular to the direction of the translatory movement; as illustrated in Fig. 3 (not shown), the agitation members preferably comprise paddles spaced equidistantly around the turns of the helical strip thus to divide the reactants into a number of portions. Preferably, the drum carries annular track members 2 and 3 supported by bearing wheels 4 and 5 and is rotated by a gear reducer/motor unit 8 arranged to drive a pinion 7 rigidly secured on its output shaft and meshing with the gear ring 6 connected to the drum.  The drum may have means 11 for heating or cooling, a de-gassing duct 12 at its discharge end, which discharge may be provided with a funnel 19 of variable diameter, and a pipe 13 for the introduction of the nitration agent at the inlet end 17, which inlet may have a diameter slightly less than that of the central aperture 15 of the helical strip.  Suitable dimensions and speed of operation of the apparatus are given in an example together with the operating temperature and proportions of the components of the nitration agent mixture; the cellulose may be bleached cotton linters and/or chemical wood pulp.
Patent GB-1373376-A (GB)
Title: Method and apparatus for rolling hot metal workpieces and coiler for use in coiling hot metal workpieces
IPC: B21C49/00
Filed: 1972-11-15
Abstract: 1373376 Rolling and coiling metal STEEL CO OF CANADA Ltd 15 Nov 1972 [15 Nov 1971] 52856/72 Divided out of 1373375 Headings B3M and B3E  Apparatus for rolling a hot metal workpiece comprises first and second rolling mills and a mandrel-less downcoiler whereby the workpiece may be passed through the first mill, coiled, uncoiled, and passed through the second mill. The Fig. shows a furnace 10, vertical scale breaker 11, horizontal scale breaker 12, roughing mill stands 13-17 each with its own vertical edger, coiler 29, rotary crop shear 18, finishing mill stands 19-24 and final coilers 25-27. Coiler 29 is constructed and operated as described in Specification 1,373,375. In operation, the workpiece from stand 17 is coiled in the coil, and then uncoiled tail first and delivered to the finishing mill. A descaling unit may be provided between shear 18 and the finishing mill, and cooling water sprays above the runout table (not shown), between the finishing mill and the final coilers.