baber/WOPTO huggingface dataset:
Patent GB-1159925-A (GB)
Title: Process for producing Thermoplastic Polycarbonate from Novel Composition.
IPC: C08G63/60
Filed: 1966-08-31
Abstract: 1,159,925. Polycarbonates. GENERAL ELECTRIC CO. 31 Aug., 1966 [1 Sept., 1965(2)], No. 56750/68. Divided out of 1,159,924. Heading C3R. A thermoplastic randomly branched polycarbonate of M.W. 10<SP>4</SP>-10<SP>5</SP> is made by reacting, in an organic solvent which is inert to the reactants and in which the polycarbonate is soluble, a mixture of a carbonyl halide or bishaloformate with a mixture of at least one dihydric phenol and 0À1-2 mol per cent of a trifunctional organic compound (based on the total weight of the mixture) at above 35 C. at least 50% of the trifunctional compound having particle size less than 100 Á and also a solubility of less than 5 weight per cent in the reaction medium. The trifunctional compound is or mixtures of these. Where A, B and D are either -OH or -CO 2 H so that when any 2 groups in I are ortho at least one is -CO 2 H. -R-D is an -OH or -CO 2 H substituted alkylidene group of 1-10 C atoms. R 1  and R 2  may be halogen or alkyl (1-3 C atoms) and p or q is 0-4 inclusive. The trifunctional compound may be added as a single phase solid solution in a polycarbonate. The single phase solution may contain 1-90 wt. per cent of the trifunctional compound. Difunctional carboxylic acids may be present. An organic or inorganic acid acceptor may also be present. Molecular weight regulators may also be added. In the examples polycarbonates were made by reacting bis-phenol A, phosgene, diphenolic acid and in some cases phenol. Uses films, fibres and mouldings.
Patent GB-1334379-A (GB)
Title: Apparatus for stabilizing an arc
IPC: H05H1/34
Filed: 1970-11-20
Abstract: 1334379 Stabilizing arcs in arc torches UNION CARBIDE CORP 20 Nov 1970 [21 Nov 1969] 56892/70 Heading H5H [Also in Division H1] Apparatus for producing a stable arc comprises a pair of axially spaced electrodes, at least one of which is a hollow cathode 17 having an inside surface 19 wherein said arc terminates; a cooling liquid jacket 21 surrounding said hollow cathode; a cooling fluid divider 23 positioned in said jacket and having a configuration to form, in conjunction with a surface of said electrode, a passage 25 of varying cross-section whereby fluid flowing through said passage will have varying velocity; a chamber 10, 11 of greater diameter than and surrounding the space between said electrodes, and means 9, 13 for introducing gas into said chamber. The gas which swirls through the chamber, leaves through hollow passages in the electrodes and may be re-circulated. The electrode body 17 may be of Cu with an insert 19 of W or thoriated W. The varying cross-section of the passage 25 is provided by a tapered portion 22 of the divider 23. Since the largest area of the passage 25 is at the mouth end of the electrode, the cooling water will have a lower velocity here and the temperature of the mouth end will be higher than that of any other part of the electrode so the arc will be anchored at said mouth end. The apparatus may be used for heating a gas.
Patent GB-1469746-A (GB)
Title: Manufacture of cast ferrous metal dies
IPC: B22C9/02
Filed: 1973-06-22
Abstract: 1469746 Foundry moulding; introducing metal into moulds SELLY OAK DIECASTINGS Ltd 18 June 1974 [22 June 1973] 57197/72 Headings B3F and B3G In a method of manufacturing a cast ferrous metal die, a pattern 3, Fig. 1, of non-ferrous metal is cast in a mould 1, 5, the part 1 being of metal, e.g. aluminium, and pre-heated and coated with refractory material immediately prior to such casting; the non-ferrous metal is introduced to the mould and against the heated part 1 at a temperature below the normal solidification point of the casting metal, i.e. the liquid metal is super-cooled. The part 5 may be of sand. The cast pattern 3 is removed from the mould and a mould part 10 of bonded refractory material formed from it; such part 10 is placed in a mould 22 and the required ferrous metal die 30 cast about it. The pattern 3 may be of aluminium, zinc, magnesium, lead, titanium or copper alloy and the mould part 1 of aluminium or copper alloy. The material of the mould part 10 may comprise resin-bonded zirconium dioxide or sand incorporating a setting agent. Each die 30 has joint facings 33 for attachment to a similar die.
Patent GB-1382266-A (GB)
Title: Production of smoking articles
IPC: A24C5/18
Filed: 1971-12-09
Abstract: 1382266 Cigarette making-machines BRITISH AMERICAN TOBACCO CO Ltd 4 Dec 1972 [9 Dec 1971] 57246/71 Heading A2C A continuous-rod cigarette making-machine is adapted to produce "stratified" cigarettes of the kind described in Specification 1340100 having portions 22, 23 of two differently constituted smoking mixtures which adjoin each other at a surface inclined to the cigarette axis; a conventional machine being modified by increasing the length of the tobacco stream suction band 4 and providing an additional feed system B for a smoking mixture 5, upstream of the original tobacco feed system A, which system B includes means for shaping a pneumatically conveyed stream of the mixture 5 and means 9 for removing surplus stream material. The stream of the mixture 5 is shaped by trimmer discs 6 each having blade portions 20 inclined at an angle to the disc axis. A blow off unit 9, syncronised with the trimmer discs 6, removes surplus mixture 5 to produce gaps between successive double wedge shaped portions of the stream. The feed system A then fills in the gaps in the stream with tobacco to build up a full depth stream which after trimming by discs 14 is wrapped in conventional manner.
Patent GB-1448849-A (GB)
Title: Process for treating seam between outside panels of car body
IPC: B62D27/02
Filed: 1973-12-12
Abstract: 1448849 Jointing DAIHATSU KOGYO CO Ltd 12 Dec 1973 [14 Dec 1972 30 Nov 1973] 57492/73 Heading B3V A recess at the seam between outside panels of a car body is over-filled with an epoxy resin composition which is heated so that it may be spread in a single operation, the resin then being cured by heating with a far infra-red heater (i.e. wavelength of 2-1000 Á) and the excess of cured resin removed. The resin may be heated for spreading by heating the panels and/or directly heating the resin before or during spreading with an electric heater or a near or far infra-red heater. As applied to the seams 23, Fig. 11, in the rear pillars of a car on a conveyer 24, heaters 18 on a frame 17 with a balance weight 19 are lowered on to the car and carried along with the car by means of hooks 20. Excess cured resin is preferably removed with a rotary plane or flat file while still hot, final belt or disc sanding being effected after the resin has cooled. Resin compositions are referred to which indude a curing agent, filler, accelerator, flexing agent and a thixotropic agent. The examples are of filled spot-welded seams. Curing temperatures range up to 270‹ C.
Patent GB-1392690-A (GB)
Title: Leak detector unit
IPC: G01M3/32
Filed: 1973-12-12
Abstract: 1392690 Leak testing CROSS CO 12 Dec 1973 [8 Jan 1973] 57625/73 Addition to 1338218 Heading G1S In testing a workpiece 350 for leaks, the workpiece is rapidly pre-filled for a predetermined time and the flow-rate required to maintain a test pressure in the workpiece measured, the prefilling being carried out in first and second stages using pressure sources at a high pressure and at the test pressure respectively, and switching between the first and second stages being carried out automatically by a pressure switch 3 PS. In the apparatus shown, which is a modification of the embodiment of Figs. 1 to 5 (not shown) of the parent Specification, the high pressure source is provided by a regulator 338 and the test pressure source by regulator 341. At the commencement of pre-filling, the workpiece 350 is connected to regulator 338 via line 301, and valves 302, 351 and 356. When a pressure just below the test pressure is attained in the workpiece, pressure switch 3 PS operates and energizes solenoid 4. This causes valves 302 to shift and connect the workpiece to regulator 341. At the end of the predetermined pre-filling time, time switch 2TR (c.f. Figs.1 to 5 (not shown)) operates and shifts valve 351 to connect the workpiece to the flow measuring element 317. The remainder of the operating cycle is as described in the parent Specification.
Patent GB-1447651-A (GB)
Title: Bearings
IPC: F16C17/12
Filed: 1973-12-13
Abstract: 1447651 Bearings GARRETT CORP 13 Dec 1973 [13 Dec 1972] 57781/73 Heading F2A A hydrodynamic fluid bearing comprises two spaced bearing elements 12, 16, a number of resilient bearing foils 22, each anchored at one end to one bearing element 16 whence it extends towards, and in the direction of relative movement of the second element 12 and is urged by its resilience into contact with the second element 12, each foil 22 being provided with resilient stiffening means 28 engaging a part of it intermediate its ends on the side facing the element to which it is anchored, 16, at least when the elements 12, 16 approach each other in its vicinity to increase the resistance of the foils to such approaching movement. The stiffening means may be foils freely cantilevered in one direction, 28, Fig. 7, or in two directions 78, Fig. 4 (not shown); alternatively the foils may be supported at both ends, 46, Fig. 2 (not shown) or 66, Fig. 3 (not shown). The adjacent bearing foil may provide the stiffening means as in Fig. 5 (not shown). The bearing may be a journal bearing Fig. 7 (not shown); a conical bearing Fig. 6 (not shown), or axial thrust or linear bearings (not illustrated).
Patent GB-1370671-A (GB)
Title: Double-acting short-stroke hydraulic dampers
IPC: F16F9/26
Filed: 1971-12-14
Abstract: 1370671 Hydraulic dampers SOC NATIONALE INDUSTRIELLE AEROSPATIALE 14 Dec 1971 [17 Dec 1970] 57979/71 Heading F2S An hydraulic damper has a plurality of pistons 9 on a common rod 2. Each piston 9 moves in its own sealed chamber 8. A bag 6 of gas compensates for the increased piston-rod volume on contraction. A sealing boot 7 recovers leaks from the chambers 8. The casing 3 housing the chambers 8 is formed of plastics material in two halves which slot together.
Patent GB-1451938-A (GB)
Title: Tool for dressing and shaping grinding wheels
IPC: B24B53/12
Filed: 1973-12-14
Abstract: 1451938 Trueing grinding wheels ERNST WINTER & SOHN 14 Dec 1973 [15 Dec 1972] 58165/73 Heading B3D A tool for dressing a grinding wheel comprises a holder 2 to which is connected a support 3 for a cutting member consisting of a sintered plate 4 provided with a support member 5, the plate consisting of mult-crystalline diamond material and/or cubic crystalline boron nitride material with a concentration of at least 80% by volume, a thickness of 0À3 to 1À0 mm. and a cutting edge of 5 to 20 mm. The cutting edge may be in the form of an are at right angles to the working direction A. A plate 4 is soldered to the support 3 and the support member 5 is tapered. The curve of the cutting edge may be produced during use.
Patent GB-1329458-A (GB)
Title: Broadcast receivers
IPC: H04B1/30
Filed: 1970-12-09
Abstract: 1329458 Radio receiving circuits; oscillator circuits LICENTIA PATENT-VERWALTUNGS GmbH 9 Dec 1970 [11 Dec 1969] 58374/70 Headings H3F and H3Q In a broadcast receiver for single side band reception of received transmissions equally spaced in frequency and including an oscillator for generating voltages for frequency changing or demodulation purposes with oscillator frequencies allotted to the transmission frequencies, means are provided for utilising an ultrasonic delay line as the frequency standard for the oscillator frequency spacing. A single side band receiver comprises signal tuned circuits 2, Fig. 1, mixer 3, I.F. amplifier 4 and a demodulator 5 fed with carrier wave by means of a very narrow band filter 8 and amplifier 9: the frequencies at which the local oscillator 7 can oscillate are determined by circuit 11 comprising an ultrasonic delay line 12, the transit time of which is made equal to the reciprocal of the frequency spacing. Alternatively in a T.R.F. receiver, the oscillator 7 may supply waveform of carrier frequency over line 10 to the demodulator 5. The circuit 11 may take the form of a control pulse generator, each pulse blocking the oscillator 7 so that its output passes through zero (Fig. 3, not shown). A phase comparison stage 16, Fig. 3, may alternatively be used the phase position of a pulse from pulse generator 11 being compared with an oblique side of the sine wave from oscillator 7 to furnish a control voltage U R  controlling the frequency of oscillator 7. In this arrangement, the pulse generator (11, Fig. 6, not shown) may control an oscillator producing bursts of pulses which form the first input to the phase comparison stage. The oscillator 7 may alternatively be formed by a tunable selective amplifier 19, Fig. 8, the delay 12 forming a feedback path between its output and input. The delay line may be connected between the output and input of an oscillator in such a way as to synchronize the drive (Fig. 10, not shown). In a modification of this the output of tunable oscillator 7, Fig. 11, is passed to delay line 12, the input and output voltages of which are passed to a phase comparison circuit 21 to produce a control voltage U C  controlling the oscillator 7.
Patent GB-599769-A (GB)
Abstract: 599,769. Drawing - books. PETER - LUNN (PUBLISHERS), LTD., and HARLING, R. Sept. 24, 1945, No. 24698. [Classes 16 and 146 (ii)] Manuscript tablets; block holders.-A drawing- book comprises a set of leaves 1 bearing drawings or illustrations to be copied, drawing hints or other text, and a renewable or perpetual writing block 5 of the type consisting of a base plate on which is superimposed a sheet of black, waxed paper, a sheet of translucent paper and an upper sheet of thin transparent material secured to the base plate along two opposite sides only, and a strip of wire 8 extending across the block between the translucent sheet and the waxed surface for erasing written matter, the writing block being mounted within the book so that it can be moved to a convenient position alongside the copy sheets when required for use and can be accommodated within the book when .not in use. The sheets are bound between stiff front and back covers 2, 3 and the back cover has a flap or extension 4 hinged to it in which there is a pocket provided with a window 7 carrying the writing block. The erasure strip 8 is secured by its ends to the side seams: to erase written matter, the block is withdrawn to the limit determined by the fixed bar and then returned to its normal position. Accommodation may be provided for writing implements.
Patent GB-716469-A (GB)
Abstract: 716,469. Radio receivers. AUTOMATIC MANUFACTURING CORPORATION. Aug. 25, 1952 [Sept. 11, 1951], No. 21297/52. Class 40 (5). [Also in Group XXXV] A high frequency coil assembly, particularly a transformer arrangement, comprises a former having a transverse slot therein, a pin extending through the slot, coils mounted on the former and a pair of magnetic members enclosing the coils, the members being engaged and held by the pin. As shown the transformer is associated with a fixed condenser for tuning purposes. A pin 25 is secured to an insulating base 26 having cut-outs 27, 28 to accommodate terminals 9 ... 12. These terminals are arranged in contact with coatings 30, 31 on an insulating sheet 29 which, together with insulating sheet 32, are slid over the pin 25 to form the condenser. Magnetic member 5 is then placed over the pin 25, the transformer windings 1, 2 on a former 13 is then slid over the pin 25, by means of a transverse slot 14 in the former and lastly another magnetic member 6 is placed over the pin 25, the whole assembly being held between the arms 36. 37 of a C-shaped clamp. The whole assembly is then housed in a case 38. Tuning of the assembly is effected by means of movable dust cores 3, 4. Coupling between the coils may be reduced by the insertion of a magnetic shunt therebetween.
Patent GB-779286-A (GB)
IPC: B63B35/04
Abstract: 779,286. Laying repeater cables. TELEGRAPH CONSTRUCTION & MAIN. TENANCE CO., Ltd. Jan. 6, 1956 [Jan. 11, 1955], No. 861/55. Class 78 (5). Apparatus for laying a submarine cable comprising repeaters, includes a main sheave 4 for paying out the cable, a secondary sheave 5, and a cradle 7 supporting repeater R, the secondary sheave 5 being mounted on arms 6 pivoted at 9 so that it may be raised by rams 13 to the dotted-line position shown where the repeater can pass safely over the main sheave 4. The operation is as follows: Firstly depress sheave 5 by means of rams 13, arms 6 pivoting at 9, to allow repeater R to pass over sheave 5 and to lodge in cradle 7. Secondly, raise sheave 5 by means of said rams, arms 6 again pivoting at 9, till sheave 5 is swung up into the dottedline position to allow repeater R to pass over sheave 4. As shown, sheave 5 is carried on arms 6 by levers 18 pivoted to said arms at 19. the levers 18 resting on dynamometer 20 which thus measures the tension of the cable. Any tendency for the repeater to slip out of cradle 7 is prevented by means of clip 100 which releasably clips the repeater to straps 22 pivotally connected to arms 6 at 21 and is released by a manual pull on a rope. Arms 6 rest on stop 10, which must be retracted by turnbuckle 26 before any movement of arms 6 takes place.
Patent GB-2001053-A (GB)
Title: Insecticidal substituted benzoyl ureas
IPC: A01N47/36
Filed: 1978-06-19
Abstract: The ureas have the general formula:   <IMAGE> wherein R, A and B are various substituents, or B may be H. Some of the compounds are novel and others are prepared by a novel process involving the reaction of a benzamide with an alkyl lithium, a phenyl chloroformate and an amine.
Patent GB-2006669-A (GB)
Title: Mould for the production of tyres
IPC: B29D30/06
Filed: 1978-10-26
Abstract: A mould for producing tyres, which comprises a removable rigid outer casing (1,2) and a core (4) made of flexible material, having two flanges (42) the core being mounted inside the rigid outer casing so as to leave a moulding space (3) for the tyre between the inner surface of the casing and the outer surface of the core, the core being securely held in place by a rigid equatorial element (5) having an outer periphery (53) which abuts the inner surface of the core in the equatorial region, an inner periphery (54) which abuts the outer casing and two lateral surfaces (51, 52) such that the two flanges are each sandwiched between the outer casing and a corresponding lateral surface. The interior of the core can be filled with fluid under pressure for heating or cooling the tyre. <IMAGE>
Patent GB-2032774-A (GB)
Title: Fire extinguisher
IPC: A62C35/02
Filed: 1978-10-31
Abstract: A fire extinguisher which releases vapours of an extinguishing agent in response to infra-red radiation reaching the container. The infra-red radiation activates a fuse (3) which, in turn, optionally activates a thermal charge (7) and the heat that results destroys a container (4) which encases a liquid fire extinguishing agent (2). The extinguishing agent then vaporizes and issues from the extinguisher. <IMAGE>
Patent GB-2012852-A (GB)
Title: Adjustable Head or Foot for Scaffolding
IPC: E04G25/00
Filed: 1978-12-08
Abstract: An angularly adjustable end fixture to enable scaffold poles 10 to be used on sloping ground comprises two wedge systems A and B each having a circular plate 3, 6, the plates being in face-to-face relationship and rotatable about this common axis. Wedge system A is attached to a fixing plate 1 and wedge system B to a prop 9. The wedge systems are rotated until the prop is at the desired angle to the fixing plate, and they are then clamped in this position. <IMAGE>
Patent GB-2013915-A (GB)
Title: Method of manufacturing fluorescent screens of colour picture tubes
IPC: G03F7/28
Filed: 1978-12-29
Abstract: A film of a photosensitive composition having different powder receiving capability between its exposed and unexposed portions is coated on the inner surface of the face plate of a colour picture tube. Then, the film is exposed to light through the colour selection electrode which is spaced a predetermined distance from the face plate to form a pattern of exposed portions on the film. Thereafter powders of a pigment and a phosphor are deposited onto the pattern in accordance with the difference in the powder receiving capability. Preferably the exposed portions are rendered tacky and the composition can be exposed several times, each time a phosphor of a different colour being deposited.
Patent GB-2012622-A (GB)
Title: Dyeing yarn
IPC: D06B11/00
Filed: 1979-01-09
Abstract: Yarn is dyed by moving the yarn through a mist of de-aerated dye supplied in a plane perpendicular to the direction of movement of the yarn. Apparatus for carrying out this method comprises two treatment chambers (1) having telescoping parts (3), (4) with an inlet and an outlet (7, 8) for the yarn (2) and an atomizer (9) having a slot nozzle. The apparatus may include a recovery vessel (11) for the dye, a dye supply vessel (16) connected via a pump (17) of the atomizer and a reservoir (18) for the dye. A glass ball-filled recovery vessel (11) (see also Figure 2) is connected to the chambers. The inlet to the chambers may include a setting chamber (26) (Figure 3) to remove fluff from the yarn. The yarn speed and dye pressure may be varied to give special effects. <IMAGE>
Patent GB-2042666-A (GB)
Title: Rotary Tool Housing
IPC: B23Q11/08
Filed: 1979-02-19
Abstract: A housing for a rotary tool comprises a body portion (26) for receiving the tool, a nose portion (36) telescopically mounted on the body portion (26) and a spring (48) urging the nose portion (36) away from body portion (26), means being provided to limit the telescopic movement of nose portion (36) relative to the body portion (26), and an opening (46) being provided in the nose portion (36) for projection therethrough of a bit (18) of the tool. The interior of the housing is connectable to a vacuum source by means of a hose (66) so that, in use, the bit (18) is rotated and air is drawn through the opening (46) entraining therewith swarf created by the bit. As the bit (18) is pushed into a workpiece, the nose portion (36) retracts into the body portion, allowing the bit to go deeper into the workpiece. The housing is of particular use when operations using rotary tools are carried out on materials such as glass reinforced plastics, the swarf of which becomes easily airborne and is harmful to the tool operator. <IMAGE>
Patent GB-2020284-A (GB)
Title: Preparation of a cycloproylacetic acid and its derivatives
IPC: C07C59/147
Filed: 1979-04-30
Abstract: Novel 2-formyl-3,3-dimethylcylopropylacetic acid, its esters, salts or dialkylacetals are prepared by a process which comprises ozonolysis of 3-acetyl-6,6-dimethylbicyclo [3.1.0]-2-hexene, reductive cleavage of the ozonide product thus found, and optionally converting the free acid into an ester, a salt or a dialkyl acetal. The acetic acid derivative is an intermediate in the manufacture of pyrethroid insecticides. The bicyclohexene starting material is preferably obtained from the naturally-occurring terpene (+)- 3-carene.