baber/WOPTO huggingface dataset:
Patent GB-1042012-A (GB)
Title: Improvements in the coating of articles with polytetrafluoroethylene
Inventor: MASSER ALFRED HENRI
IPC: C04B41/52
Filed: 1961-09-11
Abstract: A process of applying a surface of polytetrafluoroethylene to a base material comprises first forming on the base a coating of a porous ceramic "ground coat" then applying the PTFE to the porous surface, without any intermediate treatment of the surface to affect its porosity.  The base may be metal, e.g. ferrous metal or pottery.  It may be cleaned, shot-blasted or etched; the ceramic frit is then sprayed on, dried and fired, and an aqueous dispersion of PTFE is then sprayed on, dried and sintered at 350-400 DEG  C.  The process is applicable to frying pans, saucepans, bearings, and fluid-control valves.  A suitable frit comprises 25% ground glass, 30% quartz, 10% of the "No. 15 Compound" of Messrs. Ferro Enamels Ltd., 5% clay and 30% water, ground to pass 200 mesh.ALSO:A process of applying a surface of polytetrafluoroethylene to a base material comprises first forming on the base a coating of a porous ceramic "ground coat" including free quartz then applying the PTFE to the porous surface, without any intermediate treatment of the surface to affect its porosity.  The base may be metal, e.g. ferrous metal or pottery.  It may be cleaned, shot-blasted or etched: the ceramic frit is then sprayed on, dried and fired, and an aqueous dispersion of PTFE is then sprayed on, dried and sintered at 350-400 DEG C.  The process is applicable to frying pans, saucepans, bearings, and fluid-control valves.
Patent GB-174789-A (GB)
Title: Improvements in, or relating to, couplings for motor cars and like vehicles
IPC: B60T7/20
Filed: 1920-11-18
Abstract: 174,789. Mackaness, S. G. Nov. 18, 1920. Couplings for road vehicles. - In an arrangement for use when one vehicle is towed by another, of the kind in which a drum containing brake shoes adapted to contact with the drum is fixed to each front wheel of the towed vehicle, the brakes are operated by coupling-rods which allow the trailer to follow the movements of the towing vehicle. As shown in Fig. 3, the forward ends of the coupling-rods g are connected by a chain h passing through a V-shaped or curved sleeve i attached by leather straps j to the rear axle of the towing- car, the arrangements thus allowing one side of the rear car to gain on the other at a turn.
Patent GB-627694-A (GB)
Title: Improvements in and relating to phase-shifting transformer connections
IPC: H01F29/04
Filed: 1945-12-03
Abstract: 627,694. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 3, 1945, No. 32578. Convention date, Dec. 4, 1944. [Class 38 (ii)] A phase-shifting transformer circuit comprises two sets of polyphase windings alternately connected to form a closed polygon, tap-changing means for one set having an operating member which when moved in the same direction causes the effective turns of this set to vary from a maximum in one sense through zero to a maximum in the opposite sense and means for reversing the connections of the set when its tap-changing means goes through its zero position,- the line terminals of the mesh being connected to the connection reversing means. The means connecting the line terminals may transfer the external circuit from point to point in the mesh when the tap-changing means is in zero position. Thus, a phase can be changed from a maximum on one side of a mean value to a maximum on the other side. All connections may be changed by rotation of an operating member. Fig. 1 shows two sets, i.e. 1-2-3 and 4-5-6, of throe-phase windings which can form a hexagon. Windings 4-5-6 are connected to tap-changing mechanism such as 8 having the usual pair of finger contacts 13-14 movable in steps over fixed contacts and connected by centre-tapped reactor 15. In the neutral position shown, the ends of windings 1 and 2-are directly connected together and to external circuit leads 20 and 21 by the change-over switches 18 and 19, winding 6 being disconnected. Counter-clockwise movement of the tap-changer shaft 16 acts through the Geneva gear 23-22 to throw over switches 17,18 and 19 in the clockwise sense. Continued movement connects the junction of winding 2 and lead 21-through tap-changer 8-to points on the winding 6 progressively nearer to the right-hand end, winding 2 and the left-hand end of winding 6 remaining connected to lead 20, as illustrated by Fig. 4. Movement clockwise from the neutral position throws over switches 17, 18 and 19 in counter-clockwise sense to interchange leads 20 and 21 and reverse the winding 6, as illustrated by Fig. 6. Windings 4 and 5 are connected up in the same way as winding 6. A modified form of the switches 18 and 19 is shown. In a modification, each tapping on winding 26 is connected to a pair of contacts for positive and negative phaseshift respectively. The contacts 13 and 14 are connected to two separate windings tapped to afford a vernier adjustment ; the contact fingers for this adjustment are connected to the ends of a split reactor joined by arcing duty contacts bridged by a selector switch, all as in Specifications 500,763 and 546,153. In this arrangement, the circuit operates as an inverted hexagon as illustrated by Fig. 8. In any case windings 4 and 5 are connected similarly to winding 6 and have their own tapchangers. The invention is applicable to primary or secondary windings or to an autotransformer. Specifications 571,877 and 13156/41 (as open to inspection under Sect. 91) also are referred to.
Patent GB-876334-A (GB)
Title: Electro-magnetic relay
IPC: H01H51/06
Filed: 1959-09-25
Abstract: 876,334. Electromagnetic relays. SEELE, H. A. Sept. 25, 1959, No. 32631/59. Class 38 (5). A relay armature biasing spring 9 having its limbs 16, 17 secured to the frame 5 and armature 7, respectively, has a tongue 18 extending parallel to the limb 16 and engaged by a threaded member 25 for adjustment of the biasing force. The armature 7 pivots about the end 15 of the U-shaped frame 5 so that contacts 21, 24 are opened when the coil 6 is energized. Normally-open contacts may be provided additionally or alternatively.
Patent GB-408908-A (GB)
Title: Improvements in supports for portable optical instruments
IPC: G02B23/16
Filed: 1933-11-23
Abstract: 408,908. Supports for optical instruments. ZEISS, C., [Firm of], Carl-Zeiss- Strasse, Jena, Germany. Nov. 23, 1933, No. 32697. Convention date, Nov. 26, 1932. [Classes 97 (i) and 98 (i).] A support for a portable rangefinder, telescope, camera &c. comprises two curved members to be placed on the shoulders of the person using the instrument and an arm for holding the instrument attached to each shoulder piece in such a manner as to be rotatable about an axis approximately intersecting the neck joint of the user. Each shoulder piece a is provided with a strengthening plate b to which is secured a stud c on which is mounted a sleeve d having an upwardly-extending arm l. A forwardlyextending arm g is connected to the sleeve d by a hinge f and has an extension h carrying a bearing i in which the instrument K is placed. The weight of the instrument is counterbalanced by tension springs m extending between the arms g and the arms l. By turning the arms g about their pivots f the instrument k can be set into any desired position for use. The pieces a extend over the whole length of the user's back, and at their lower ends are joined together and provided with a waistbelt n.
Patent GB-392626-A (GB)
Title: Improvements in or relating to apparatus for the treatment of liquids by ultra-violet ray light
IPC: A23C3/07
Filed: 1931-11-25
Abstract: <PICT:0392626/III/1> Apparatus for the treatment of liquids with ultraviolet light comprises a stand 4 carrying one or more detachable treatment plates 26, detachable means, e.g. perforated troughs 32 for distributing the liquid, detachable means, e.g. troughs 37, for collecting the liquid and a support on which the lamp and reflector device is slidably mounted so that it can be moved aside for access to the plates and the distributing and collecting means.  The lamps are supported by T-shaped members 21 adjustably mounted in a frame 16 slidably mounted on a rod 14 and carrying the reflectors 7.  The rod 14 is carried by brackets mounted on frame <PICT:0392626/III/2> members 10, 11 and extends laterally beyond the member 10 as shown in Fig. 7.  In an alternative construction the frame carrying the lamps and reflectors is suspended by chains from a carriage mounted on wheels running on a cross bar between the members 10, 11.
Patent GB-1147619-A (GB)
Title: Apparatus for electronically producing corrected colour separations by photoelectrically scanning coloured originals to be reproduced
Inventor: HELL RUDOLF
IPC: G03F3/08
Filed: 1966-07-21
Abstract: 1,147,619. Copying by scanning. R. HELL. 21 July, 1966 [21 July, 1965], No. 32899/66. Heading H4F. In the reproduction of coloured originals utilizing colour separations the latter are corrected by circuit means in which, for each separation, an electrical signal representative of the colour aspect to be corrected and derived by photoelectric scanning is logarithmetically compressed (the uncorrected colour signal) and combined with a similarly produced and compressed signal representative of the corrections to be effected (the colour correction signal), the combination involving forming the difference  between the uncorrected and the correction signals, separating the difference signal two parts according to its sign, individually adjusting the amplitudes of each part and adding the adjusted signals to the uncorrected colour signal. The arrangement disclosed operates by providing separate adjustments for the regions of the " quasi-black " and " quasi-white " colours to make such colours have the density of the black value (about 2) and of the white value (zero) respectively, Figs. 1 and 2 (not shown). In the described embodiment the uncorrected and the correction signals modulated on carrier waves of equal frequency and opposite phase are supplied from respective conductors 1, 2 (Fig. 3), to diode pairs 3, 4; 15, 16; 24, 25 and 31, 32 to form the difference between opposite polarity half cycles of the two signals, such difference, if negative, being suppressed by diodes 6 and 34 and if positive by diodes 18 and 27. Unsuppressed half-cycles are then fed via resistors 10, 22 and 28, 35 to adjustable resistors 12, 30 supplying, respectively, the " white colour correction signal " and the " black colour correction signal " to resistor 23 in which they combine with the uncorrected signal from conductor 1 to form the corrected colour signal. To compensate for the forward voltages of the suppression diodes 6, 18, 27, 34, the latter are biased by the voltage drops across diodes 9 and 21.
Patent GB-742165-A (GB)
Title: Improvements in or relating to television receiving circuits
IPC: H04N5/16
Filed: 1953-11-27
Abstract: 742,165. Television. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 27, 1953 [Dec. 1, 1952], No. 32997/53. Class 40 (3). In a D.C. reinsertion circuit for a negatively modulated television signal a bias voltage derived from an output circuit of a valve to the input of which the signal is supplied with negatively going synchronizing pulses is employed to maintain the peaks of the synchronizing pulses at a constant level corresponding to minimum anode current of the valve. As shown in Fig. 1, the demodulated signal 5 is fed with negatively going synchronizing pulses to a valve 8 the cathode potential of which controls the charging of a condenser 18 via resistor 19 and diode 16, the time constant of 18, 19 being of the order of 5 to 20 line periods. The potential across condenser 18 is then employed to control, via diode 21, the charging of a further condenser 23 which with resistor 22 forms an integrating network having a time constant of the order of ten to one hundred times that of the time constant of network 18, 19. The potential across 23 is then utilized to vary the anode current in valve 25 to produce a controlling bias across resistor 10 which maintains the peaks of the synchronizing signals at a constant level corresponding to minimum anode current in valve 8 irrespective of variations in amplitude of the television signal. An advantage of the invention is that the peaks of the synchronizing signals, do not shift during the occurrence of frequent interference signals. Compensation for the effect of interference signals may be produced by means of valve 40 which operates as a noise-inverter and inserts signals of the same (or greater) amplitude and of opposite polarity into the output circuit of valve 8 terminal 15 of which supplies the video signal to the picture tube. Synchronizing signals may be derived from the anode of valve 40, via condenser 42, and it is stated that interference signals exert no influence on the synchronization of the deflecting circuits. Contract control is effected by the variable tapping 11 on the cathode resistance 12 of valve 8.
Patent GB-1343085-A (GB)
Title: Pyrolytic graphite composite materials
IPC: C01B31/00
Filed: 1971-07-15
Abstract: 1343085 Reinforced pyrolytic graphite; silicon carbide SUSQUEHANNA CORP 15 July 1971 [21 Aug 1970] 33172/71 Heading C1A A material comprises pyrolytic graphite and silicon carbon and is characterized by the fact that the silicon carbide is co-deposited with the pyrolytic graphite such that the SiC consists of needle crystals, oriented along the "C" axis of the co-deposited graphite, the SiC comprising at least 5% by volume of the material. The material may be obtained by pyrolysing a mixture of methyl trichlorosilane and a hydrocarbon gas on a substrate heated to 2800‹ F to 4000‹ F. The gaseous mixture may contain a gaseous inert diluent, e.g. H 2 , A, He, N 2  or mixtures thereof, the hydrocarbon used is preferably methane and the pyrolysis may be performed at atmospheric pressure. In the preferred embodiment a fibre reinforced matrix, is obtained in which the reinforcement is at least one layer of refractory, e.g. C, filaments or strands which strands in each layer are substantially parallel and laterally spaced, and the matrix is the pyrolytic graphite SiC material defined previously which is preferably deposited around the reinforcing filaments whilst they are being laid up on a mandrel or shaped forme.
Patent GB-1271697-A (GB)
Title: An operating table
IPC: A61G13/00
Filed: 1969-07-01
Abstract: 1,271,697. Surgical operating supports. JARNHS. ELEKTRISKA A.B. 1 July, 1969 [17 July, 1968], No. 33208/69. Heading A5R. [Also in Division A4] An operating table comprises a main body support part 1 and leg support members 12, 13 connected to slides 19, 18 slideable along a support arm 6, arm 6 being carried by a slide 5 slideable transversely along the table part 1 slide 5 is operated by a threaded rod 8 and crank handle 9. Foot supports 10a, 11a are universally adjustable on arms 10, 11 pivoted on a bracket 17 slideable along arm 6. Leg members 12, 13 are connected to slides 19, 18 by vertically adjustable angle members 12a, 13a. Means are provided to lock parts 17, 18, 19 in adjusted positions on arm 6. Table part 1 is vertically adjustable on a pedestal (3) by hydraulic means, and an extension 2 of part 1 can be slid beneath part 1 by a handle 14 after removal of the mattress (20). Extension 2 may then be replaced by a smaller body support (16, Fig. 3, not shown) which can be locked in its adjusted position along arm 6.
Patent GB-384785-A (GB)
Title: Improvements in or relating to hand fire-extinguishers
IPC: A62C11/00
Filed: 1931-12-01
Abstract: 384,785. Fire-extinguishers; reciprocating pumps. BURN, R. S. and LUMBY, V. J., 127, Park Road, Aston, Birmingham. Dec. 1, 1931, No. 33245. [Class 47 (ii).] A hand fire-extinguisher of the type embodying a liquid pump, is constructed so that the pumppiston and rod, delivery tube, pump handle, and nozzle can readily be removed, without dismantling any part of the extinguisher container. The pump barrel d is fixed in the container a, and its lower, projecting, end is fitted with a screwed sleeve e. A cap q with a nozzle aperture r is screwed to the sleeve. The piston-rod is tubular, and surrounds a delivery tube p which is fitted over the nozzle r. The piston tube extends from the upper end of the barrel and is screwed to a handle s. By unscrewing the cap q and handle s, the tubes j and p can be withdrawn from the barrel d. The piston m, Fig. 4, is slidable between collars k on the tube j and over apertures n, n formed therein. These apertures are uncovered respectively on the in and out strokes of the pistonrod, allowing liquid to pass from the barrel to the rod, and so, to the upper end of the delivery tube p. The latter is sealed, when the extinguisher is not in use, by a spring-pressed sealing plunger v in the handle. Liquid enters the barrel by a plurality of inlets g arranged adjacent each end of the extinguisher and each controlled by a ball valve. A non-return air vent may be provided in the filling plug x.
Patent GB-653304-A (GB)
Title: Process for the treament of crude sulphur sludge
IPC: C01B17/02
Filed: 1948-12-28
Abstract: Sulphur is recovered from sulphur sludge by treatment with open steam in a closed vessel at a temperature which does not substantially exceed 130 DEG  C.  The sludge is run into steam-jacketed stainless steel kettle 10 and treated with live steam injected at 15 and uniformly distributed by baffles 21. Kettle 10 is at a pressure of, say, 40 lbs. per sq. inch and the sulphur, continuously discharged through 16 <PICT:0653304/III/1> into inclined steam jacketed pipe 17 open to the air at 18, is dehydrated by the decrease in pressure to atmospheric.  U.S.A. Specification 1,841,644 is referred to.
Patent GB-427050-A (GB)
Title: Improvements in or relating to devices or appliances for use in illuminating pictures or other objects
IPC: F21S8/00
Filed: 1933-11-29
Abstract: 427,050. Lamps for illuminating pictures &c. BOTTOM, W. E. RAWSON-, and PELLING, C., 52, Great Marlborough Street, London. Nov. 29, 1933, No. 33389. [Classes 75 (iii) and 75 (iv)] A lamp for illuminating a picture or the like comprises a trough-like casing formed or fitted with one or more reflecting surfaces and containing one or more light sources and one or more non- reflecting shutters pivotally mounted on the end walls of the casing and adapted to regulate the direction and angular expanse of light emitted through one or more openings in the casing. In the form shown, a silvered and/or corrugated glass reflector b is mounted within the casing a by means of channels or clips c secured to or forming part of the casing, a tubular electric lamp bulb h is mounted in end holders f<1>, and a shutter j with integral depending arms j<2> is pivoted on the end walls a<2> of the casing. The portion a4 of the casing adjacent the opening a<3> may be made non-reflecting. The centre of the casing may carry an-shaped bracket m in which the outer end o of a tubular arm o' is secured by means of a set screw n, the arm housing the conductors p and being secured at its other end in a similarly shaped bracket q carried by an angle plate r secured to a picture frame l.
Patent GB-841975-A (GB)
Title: Improvements in piston-and-ring assemblies for internal combustion engines and cylinders combined therewith
Inventor: CROSS ROLAND CLAUDE
IPC: F16J1/04
Filed: 1958-10-21
Abstract: 841,975. Pistons. CROSS MANUFACTURING CO. (1938) Ltd. Oct. 21, 1958, No. 33555/58. Class 122 (1). A piston 1 is provided with hard-metal split-bearing rings 3 having a radial thickness x greater than the depth of their grooves 2 so that they take the lateral load on the piston and prevent the latter contacting the cylinder wall 6 and hard-metal split-sealing rings 5 housed in grooves 4 having a depth greater than the radial thickness of the rings 5. The bearing rings have an axial length at least three times their radial depth and the sealing rings preferably have a radial depth at least one and one-half times their axial dimension. The bearing and sealing rings may be of tool steel. Specifications 415,322 and 486,388 are referred to.
Patent GB-798218-A (GB)
Title: Improvements in or relating to radio direction finding systems
Inventor: BYATT DENNIS
IPC: G01S1/02
Filed: 1955-11-23
Abstract: 798,218. Electric distributers; photo-electric distributers. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 5, 1956 [Nov. 23, 1955], No. 33572/55. Class 40 (3). [Also in Group XL (c)] In one embodiment of a radio directionfinder (see Group XL (c)), the outputs of aerials 1, 2, 3 are connected in turn to receiver-detector RD by cyclically controlling the conductances of crystals Kl, K2, K3 in synchronism with the presentation of slots SL1, SL2, SL3 in drum CD, driven by motor M, between lamp EL and photo-cells PE1, PE2, PE3, such that when a photo-cell is energized the corresponding crystal provides a low-impedance path and the other two crystals, being high-impedance, ensure that the corresponding aerials act as reflectors to the other.
Patent GB-508684-A (GB)
Title: Improvements in or relating to combing machines for textile fibres
IPC: D01G19/10
Filed: 1937-12-04
Abstract: 508,684. Combing-machines. NASMITH, J. W. Dec. 4, 1937, No. 33582. [Class 120 (i)] In a rectilinear combing-machine having detaching mechanism comprising a detaching roller co-acting with the combing-cylinder segment and rising bodily therefrom during passage of the combing needles, drive transmission means is provided between the combing cylinder shaft and the detaching roller shaft which remains in constant engagement with both shafts at all positions of the detaching roller. In a combing-machine having detaching means comprising a roller D, making intermittent contact with the combing-cylinder segment S as in Specifications 339,301, [Class 120 (i)], 344,102 and 345,241, a spur pinion, having a pitch line 1 is provided on the shaft of the roller D and meshes with and is driven by a spur wheel on the shaft 2 of the combing cylinder. The pitch line of this spur wheel is formed of sections A, B, C, E the arcs A, C being struck from the centre of shaft 2 and the arc C corresponding to the position of the roller D when raised clear of the needles N. The arcs B, E are struck respectively from centres b, e and correspond to the raising and lowering of the roller D.
Patent GB-605023-A (GB)
Title: Improvements in method of making cellular synthetic resin material
IPC: C08J9/30
Filed: 1945-12-12
Abstract: A cellular synthetic resin is produced by adding to a 100 per cent polymerizable thermosetting resin a blowing agent and a small amount of metal stearate as a foam stabiliser, whipping the mixture to a foam and curing the foam to a cellular hardened condition.  Stearates mentioned are those of zinc, lead, sodium, calcium and barium. Resins mentioned are those produced by interpolymerisation of unsaturated alkyd resins with monoenic compounds containing the group CH2=C\yJ, e.g. the so-called Laminac resins and the resins represented by the polyethylene glycol maleate-styrene copolymers of Specifications 540,167 and 540,168.  In the example, Laminac resin is mixed with benzoyl peroxide and tertiary butyl hydroperoxide, a mixture of zinc stearate, sodium bicarbonate and water is added and the whole whipped to complete dispersion and form a foaming mass. Phenyl hydrazine as a gelling agent and acetic acid is then added and the foamy mass is poured into a mould, covered and cured or it may be coated on to a moving belt and gelled thereon.  Curing is at 230-260 DEG  F. for 1/2 -1 hour.  Material on a moving belt may be dried before curing by passage through a hot-air oven or a high-frequency alternating current field.  The material may be used as wing liners in aeroplanes, in a sandwich construction for radar equipment or aircraft manufacture or as a sound or heat insulator.