baber/WOPTO huggingface dataset:
Patent GB-1066502-A (GB)
Title: Improvements in or relating to optical objectives of variable equivalent focal length
Inventor: CHAPMAN ALAN
IPC: G02B15/14
Filed: 1962-11-14
Abstract: 1,066,502. Lens mounts; diaphragms. RANK PRECISION INDUSTRIES Ltd., [trading as RANK ORGANISATION RANK TAYLOR HOBSON DIVISION]. Nov.12, 1963 [Nov.14, 1962], No.43079/62. Heading G2J. A zoom type objective comprising a front assembly which includes the relatively movable members A2, A3; and an iris diaphragm B located near the front of a normally stationary rear assembly A4 has mechanism B2 for operating the diaphragm B housed within a stationary tube B1 which also houses at least part of the rear assembly A4, the tube B1 having an external cam groove B7 for controlling the movement of the movable member A3. As shown the diaphragm B is operated by rotating control element B3 coupled by pin B5 to rotatable tube B2 which itself operates the diaphragm B in normal manner. On moving zoom control element E, bevel gearing E2, E3 rotates a pinion E1 meshing with gear teeth D3 on the outer surface of a drive tube D, so that tube D is rotated, and, since it has pin D2 and roller D1 engaging the cam groove B7, it is also moved longitudinally to adjust the axial position of member A3 carried by the drive tube D. The member A2 is carried by a mount G having three outwardly directed pins G1 angularly spaced at 120‹ intervals, each pin Gl having a pair of rollers G2, G3, engaging respectively a longitudinal slot such as D4 or D5 in tube D and an internal cam groove C3 in an outer stationary member, so that as tube D rotates, it causes pins G1 and thus mount G to rotate, and, due to the rollers G3 and cam grooves C3, the mount G and member A2 are moved longitudinally. To facilitate manufacture, grooves C3 are cut as cam slots right through the wall of an inner part C2 which is thereafter rigidly secured as a liner within an outer part C1. Mount J, carrying front member A1, has an external screwthread J1 co-operating with an internal screwthread H1 on a stationary outer tube H fixed to parts C1, C2, so that member A1 many be axially moved for focusing.
Patent GB-1515736-A (GB)
Title: Signal-separating circuit
IPC: H04N5/62
Filed: 1975-10-21
Abstract: 1515736 Television intercarrier sound separators PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 21 Oct 1975 [16 Aug 1975] 43141/75 Heading H3Q In an intercarrier sound separator for a television receiver in which the sound 1 f signal is obtained by coupling to a sound trap in the video signal path, further means are coupled to the sound trap to restore losses of attenuation due to the first coupling. In one embodiment, the sound output impedance is coupled to the sound trap 4, 5 by a transformer 8, 10 in the capacitative branch of the sound trap. The attenuation compensation is provided by a resistor 6 connected between a centre tap on inductor 4 and a common point e.g. earth. In a modification Fig. 2 (not shown) capacitor 5 is replaced by two series capacitors and the resistor is connected to the common point of the capacitors. In a further modification, Fig. 3 (not shown) the resistor is replaced by an inductor and the coupling to the tuned circuit 8, 9, is capacitative.
Patent GB-906900-A (GB)
Title: Protective coating on metals
Inventor: SCHIMKUS KURT E
IPC: C23C22/07
Filed: 1960-12-15
Abstract: Conversion coatings are formed on metallic surfaces by treatment with compositions containing the phytate ion.  Suitable compositions utilize a hydrophilic carrier, e.g. water, oil-water emulsions or wax compounds, and contain phytic acid or a salt thereof in an amount of 0.001-0.1 mole/litre of phytate ion.  The compositions may also contain (i) chromic acid, dichromic acid or a salt thereof, (ii) a copper compound, e.g. copper sulphate, which blackens the coating, and (iii) a dye such as alizarine red. Alternatively, the coatings may be dyed after their formation. The coatings are stated to provide a good bond to layers of paint, lacquer, oil or grease.  Metallic surfaces which may be coated comprise aluminium, magnesium, steel and galvanized and cadmium-plated steel.
Patent GB-1177895-A (GB)
Title: Safety Rod Systems for Nuclear Reactors
Inventor: AGAZZI ALBERTO
IPC: G21C7/22
Filed: 1968-09-11
Abstract: 1,177,895. Controlling reactors. EUROPEAN ATOMIC ENERGY COMMUNITY (EURATOM). 11 Sept., 1968 [26 Oct., 1967], No. 43225/68. Heading G6C. A liquid safety rod system for a nuclear reactor comprises tubes 2 passing vertically through the reactor core 1 between an upper collector 4 and one or more lower collectors 3, a lower reservoir 5 for neutron poison solution below the lower collectors 3, an upper reservoir 7 for poison solution above the core 1, a conduit including a pump 6 between the reservoirs 5, 7 for transferring poison solution from the lower to the upper reservoir, a valvecontrolled conduit 11 between the upper reservoir 7 and the lower collectors 3 for the flow of poison solution into the tubes 2, and an overflow poison solution reservoir 13 connected to the lower collectors 3 through a valve-controlled conduit 18 and having an overflow discharge conduit 14 at a level 15 just below the core 1 leading to the lower reservoir 5. To put the system in a state of readiness, the pump 6 is operated to convey poison solution from the lower reservoir 5 through a 3-way valve 8, 9, 10 open in directions 8, 9 and into the upper reservoir 7. The valve 22 is closed and the valves 12, 19 open. As soon as the system is filled up to the level 15, the valves 12, 19 are closed, and the system is filled up to the level 34, the valve 17 being open. The pump 6 is then stopped. The reservoir 7 contains below the level 34 sufficient poison solution to fill the tubes 2 connected to it by the valve 12 up to the level 35 between the core 1 and the upper collector 4. An alarm signal opening the valve 12 therefore enables the tubes 2 to be filled as far as the level 35, the valves 19, 22 being closed. To empty the tubes 2, it suffices to close the valve 12 and open the valve 19, bringing the tubes 2 into communication with the overflow reservoir 13. The system is once again made ready for emergency operation by filling the reservoir 7 to the level 34. The system enables poison solution to be circulated after the tubes 2 have been filled, this being useful, for example, when the solution tends to boil or to deteriorate when left standing in the core. To circulate the solution, the pump 6 is started, the valve 8, 9, 10 opened in the directions 8, 9 and the valve 17 closed, the valve 12 remaining open and the valve 28, 29, 30 being open in the directions 28, 30. A washing circuit associated with the system comprises a washing liquid reservoir 31 from the bottom of which a conduit 33 leads via a pump 32 to the top of the reservoir 7. After washing, the residues are emptied into a reservoir 26, valves 12, 22 and valve 23, 24, 25 in the directions 23, 24 being open. The gaseous atmosphere of all the reservoirs, together with that of the upper collector 4, are connected (as shown in broken lines) to a constant low pressure 36.
Patent GB-1515412-A (GB)
Title: Chopper-stabilized power supply
IPC: H02M3/156
Filed: 1975-10-21
Abstract: 1515412 Automatic voltage control THOMSON-CSF 21 Oct 1975 [22 Oct 1974] 43231/75 Heading G3R [Also in Division H3]  A regulated power supply includes a switching transistor which chops an unstabilized D.C. input voltage, and a comparator responsive to the output voltage of the supply and a reference voltage to provide rectangular signals to a control transistor coupled to the switching transistor. The control transistor is connected in series with the primary winding of a transformer, a secondary winding of which is connected through a diode to the base of the switching transistor for neutralizing charge carriers when the control transistor is cut off. As shown in Fig. 1, a load 2 is supplied from an unregulated D.C. source 1 over a chopper transistor 4 and an inductor 5. The load voltage is compared with a Zener voltage VR by a comparator 8 which supplies corresponding rectangular pulses of variable width and constant frequency or constant width and variable frequency to a control transistor 9, such that the load voltage is stabilized. The current in transistor 9 also flows in a primary winding 10 of a transformer having a secondary winding 11 and diode poled so as to recover energy when the transistor 9 cuts off. Efficiency is also improved by a further secondary winding 13 connected through a diode 14 to the base of the transistor 4 to reduce the discharge time of charge carriers stored in the base-emitter junction of the transistor 4. An additional secondary winding (15) and diode (18) may be connected to the base of transistor 9 to assist the turn-off of that transistor, Fig. 2 (not shown). In another embodiment, Fig. 4 (not shown), a capacitor is connected between the comparator 8 and the base of the transistor 9 to aid turn-on, and a further embodiment, Fig. 5 (not shown), uses transformer coupling between the transistors 9, 4.
Patent GB-1382514-A (GB)
Title: Cooking apparatus
IPC: A47B77/08
Filed: 1972-09-19
Abstract: 1382514 Cooking apparatus COMPAGNIE GENERALE D'EQUIPEMENT MENAGER 19 Sept 1972 [9 Nov 1971] 43259/72 Heading A4D [Also in Division F4] A cooking assembly comprises a frame 5 having a border 6 for engaging a support 4, the frame movably mounting a cooking apparatus 1 carrying at least one heating device 2, e.g. a hot-plate or gas ring, so that the apparatus can occupy two rest positions relative to the frame, namely a working position, Fig. 2, in which a bearing surface offered by the apparatus to cooking utensils is at a level higher than the upper surface of border 6 and a retracted position, Fig. 1 (not shown), in which the apparatus is below said upper surface, the assembly having a cover 11 hinged to the rear of frame 5, the cover 11 in a closed position forming a substantially coplanar extension of said upper surface, the cover being linked to the cooking apparatus so that when the cover is hinged open the cooking apparatus is brought to the working position and when the cover is closed the apparatus 1 is returned to its retracted position. The cover 11 is pivoted via links 13 to apparatus 1 which is carried by links 7 pivoted to form parallelograms with frame 5 and apparatus 1. Opening of the cover 11 also causes operation of a device 10 to energize the heaters 2. One or more springs 17 counterbalance the apparatus 1. In a second embodiment, Figs. 3, 4, (not shown), the apparatus 1 is pivoted at one end to cover 11 by arcuate levers (20), the cover 11 being pivoted to the frame 5 which has pins (23) engaging in slots (22) in the apparatus 1 to support the other end thereof. A third embodiment, Figs. 7, 8 (not shown), generally similar to the second is, in addition, provided with spring-biased levers pivoted at their lower ends to the frame 5 and having wheels (33) at their other ends running on rails (34) on the underside of the apparatus 1. In a fourth embodiment, Figs. 5, 6 (not shown) one end of the apparatus 1 is pivoted to the frame 5, and the other end is acted on by a compression spring (30) and is pivoted by pairs of levers (24), (25) to the cover 11 which is pivoted to the frame 5. The heating device or devices 2 may be electric and/or gas-powered.
Patent GB-1033723-A (GB)
Title: Improvements in or relating to electro-magnetic transducers
IPC: H04R11/12
Filed: 1962-11-20
Abstract: 1,033,723. Stereophonic pick-ups. W. O. STANTON. Nov. 20, 1962, No. 43333/65. Divided out of 1,033,722. Heading H4J. The subject-matter of this Specification is similar to that described with reference to Figs. 3 to 9 of Specification 1,033,722, but Claim 1 is concerned with the end faces of the polepieces being slightly in excess of 90 degrees, whereby cross-talk is reduced. Reference has been directed by the Comptroller to Specification 884,335.
Patent GB-1236529-A (GB)
Title: Improvements in or relating to antenna systems
IPC: G01S7/03
Filed: 1969-09-02
Abstract: 1,236,529. Aerials; duplex radio signalling. ALBISWERK ZURICH A.G. 2 Sept., 1969 [25 Sept., 1968], No. 43369/69. Headings H4A and H4L. An aerial system for the simultaneous transmission and reception of two waves which are orthogonally polarized and which differ in frequency by an amount equivalent to a desired intermediate frequency, comprises a primary horn radiator 1, Fig. 1, which faces a reflector 11, and which is supported by stays 12, 13, 14, 15 from said reflector. Coaxial feeders 16, 17 from the rear of the reflector 11 extend along the stays 12, 13 into the horn 1. Said horn comprises a rectangular cross-section waveguide portion, which is terminated by a shortcircuiting plate 4, Fig. 2, at the rear, and which is flared out to a rectangular aperture in front. A transmitting probe 2 extends from the feeder 17 into the horn, near the aperture. It is disposed parallel to one pair of sides of the rectangular horn, and is fitted with a rod 23 of dielectric material to improve matching. A receiving probe 3 is constituted by a semiconductor diode which is disposed parallel to the other pair of sides of the rectangular horn and near the short-circuiting plate 4. The crosssection of the rectangular horn in the region of the short-circuiting plate may be such as to support the fundamental mode of the received waves, and the long side of the rectangular aperture of the horn may be parallel to the electric field of said waves. The casing of the diode of the probe 3 is secured to one wall of the rectangular cross-section waveguide portion of the horn, and a pin from its other side extends into a coaxial plug 26, for the feeder 16. To improve matching, the probe 3 is displaced away from the centre-line of the said rectangular cross-section, and a choke coupling 27 is provided for the plug 26. The probe 3 picks up a small portion of the energy transmitted by the probe 2, although it is orthogonally polarized, and this is heterodyned with received energy in the diode to produce an output at the intermediate frequency on the feeder 16. In another embodiment, a receiving probe (30), Fig. 3 (not shown), extends into the horn near the shortcircuiting plate from an associated semiconductor diode (31) outside the waveguide portion of the horn. A dielectric material rod (32) is fitted to the probe (30), to improve matching.
Patent GB-1448917-A (GB)
Title: Stabilised halogen-containing resin compositions
IPC: C08L63/00
Filed: 1974-10-07
Abstract: 1448917 Stabilized vinyl halide polymers NITTO KASEI CO Ltd 7 Oct 1974 [11 Oct 1973 19 Oct 1973 9 Nov 1973] 43369/74 Heading C3P A halogen-containing resin is stabilized to heat and light by compounding with at least one heterocyclic glycidyl compound containing a 5- or 6-membered heterocyclic ring with 2 or 3 ring nitrogen atoms to which at least one glycidyl group is directly bonded. The stabilizer is selected from glycidyl isocyanurate compounds of formula wherein m is 0-2 (e.g. triglycidyl isocyanurate) glycidylhydantoin compounds of formula wherein R 1 , B 2  are C 1-4  alkyl or H and n is 0 or 1 (e.g. 1,3-diglycidyl-5-methyl hydantoin) glycidyl uracil compounds of formula (e.g. 1,3-diglycidyl-5-methyl uracil) glycidyl barbituric acid compounds of formula (e.g. 1,3 - diglycidyl - 5,5 - diethylbarbituric acid) glycidyl 5,5-dihydrouracil compounds of formula  wherein R 3 , R 4  are H or C 1-4  alkyl (e.g. 1,3 - diglycidyl - 5,5 - dimethyl - 6 - isopropyl - 5,6 - dihydrouracil). The composition may contain 0À1-20 parts by weight of heterocyclic glycidyl compounds per 100 parts by weight of halogen-containing resin. The composition may further comprise at least one conventional stabilizer or auxiliary stabilizer for halogen containing resins, wherein the weight ratio of the heterocyclic glycidyl compound to the conventional stabilizer/auxiliary stabilizer is 20 : 1 to 1 : 10 and the stabilizer mixture is 0À02-25 parts by weight per 100 parts by weight of resin, selected from organic nitrogen compounds, polyhydric alcohols, organophosphorus compounds, organosulphur compounds, epoxy compounds, phenolic compounds, dicarboxylic acid monoesters, organotin compounds, metal soaps, and lead stabilizers.
Patent GB-1328984-A (GB)
Title: High-voltage electrical assembly
IPC: H02B11/167
Filed: 1970-09-10
Abstract: 1328984 Switchgear structures DELLEALSTHOM 10 Sept 1970 [11 Sept 1969] 43437/70 Heading H1N A switchgear cubicle has compartments separable by means of rigid, horizontal metal panels which can be moved to a second, vertical position in which they close the front of the cubicle for normal working. Isolating switches 4, 5, shown in their earthed position, are mounted on each side of circuit breakers 2, within the central compartment of a cubicle, the compartments being defined by the two slidable metal panels 10, 11. These panels separate the compartment containing the circuit breakers from those containing the bus-bars 25 and the cable box 26, and, on withdrawal, can be turned to a vertical position so as to become a front closure. Windows 8, 16 are provided, together with interlock controls 17 and the control 6 for the circuit breakers and isolating switches. The interlocks, see Fig. 3 (not shown), prevent withdrawal of the circuit breakers as long as the panels 10, 11 are not in their closed, horizontal position, and further prevent the sliding of the panels from the closed position if the circuit breakers are withdrawn. In addition the operation of the isolating switches, circuit breakers are interlocked and cable box compartment door is also interlocked with the panel 11. A voltage transformer and various bus-bar arrangements may be mounted in the circuit breaker saddle in addition to the circuit breakers themselves.
Patent GB-1391890-A (GB)
Title: Fuel vapour control device
IPC: F02M25/08
Filed: 1973-09-18
Abstract: 1391890 Treating I C engine charges FORD MOTOR CO Ltd 18 Sept 1973 [4 Oct 1972] 43627/73 Heading F1B [Also in Division B1] A fuel vapour emission control device, for a vehicle fuel system comprises a canister 30 containing vapour adsorbent material 47 centrally located to provide chambers 40, 42 at opposite ends, a first inlet tube 36 connecting purge air from outside the canister to one end chamber 42, a second tube 26 connected to the opposite end chamber 40 for the flow of desorbed vapours therefrom, additional inlet means 18 to the opposite chamber 40 for admitting fuel vapours, to be adsorbed, at a higher pressure than the pressure in the second tube 26, thereby effecting flow therebetween and baffle means 52 in the opposite end chamber 40 between the second and additional inlets preventing direct communication between the two and forcing flow of fuel vapours through the adsorbent. The baffle 52 consists of an open cell material of predetermined porosity which permits only a restricted passage of fuel vapours which are thus forced to pass through the activated carbon adsorbent. When the engine is started, air is drawn in through the tube 36 and some air passes through the baffle to purge the space around the end of the inlet tube 18. The baffle material is compressible, to accommodate variations in the axial length of the mass of activated carbon, such variations occurring due to variations in density of the material.
Patent GB-1321000-A (GB)
Title: Process for the production of bacon
IPC: A23L13/00
Filed: 1971-09-20
Abstract: 1321000 Producing bacon ARMOUR & CO 20 Sept 1971 [6 Oct 1970] 43693/71 Headings A2D and A2E To reduce the tendency of bacon slices to adhere together, lecithin dispersed in an aqueous medium is introduced into the raw pork belly. The lecithin may be derived from a vegetable source, e.g. soybeans or cottonseed, or an animal source, and may be pre-treated with boiling water to form a hydrate to render it readily dispersible in water. The aqueous medium, which is injected into the belly, may be a pickle solution comprising sodium nitrite, sodium erythorbate, sodium chloride, brown sugar and water, and may also include a non-cyclic, polyphosphated salt of sodium or potassium, e.g. sodium tripolyphosphate, sodium hexametaphosphate, tetrasodium pyrophosphate, tetrapotassium pyrophosphate or potassium tripolyphosphate, or a mixture of sodium tripolyphosphate and hexametaphosphate. After the introduction of the pickle solution the belly may be heattreated and smoked and then chilled and moulded before being sliced and packed.
Patent GB-1431548-A (GB)
Title: Electrodeposition of plantinum
IPC: H01H11/04
Filed: 1972-09-21
Abstract: 1431548 Electro-depositing platinum ENGELHARD INDUSTRIES Ltd 12 Sept 1973 [21 Sept 1972] 43833/72 Heading C7B Bright platinum is electro-deposited on to a metal or alloy, e.g. Ta, Ti, Mo or Ni-flashed brass, using an acid electrolyte comprising a solution obtained by reacting Pt (NH 3 ) 2 (NO 2 ) 2  or "P" salt with a mixture of two or more phosphoric acids, preferably containing at least 40 wt per cent each of H 3 PO 4  and H 4 P 2 O 7 , with or without one or more polyphosphoric acids e.g. H 5 P 3 O 10 ; NH 4 H 2 PO 4  or (NH 4 ) 2  HPO 4  may be added as stabilizer. The "P" salt may be prepared by reacting NaNO 2  with (NH 4 ) 2  PtCl 6 . Pt or Pt coated Ti anodes may be used.
Patent GB-1275264-A (GB)
Title: Drilling short bore-holes
Inventor: DESTY DENIS HENRY
IPC: E21B7/14
Filed: 1968-09-16
Abstract: 1275264 Boring earth and rock BRITISH PETROLEUM CO Ltd 22 Aug 1969 [16 Sept 1968] 43937/68 Heading E1F A borehole is drilled through compatible ground by a series of explosions in the internally roughened combustion chamber of a burner 13, caused by intermittent detonation of a continuously supplied explosive mixture of fuel and oxygen formed at an inlet 16 from separate supply conduits 14, 15. The fuel may be hydrogen, carbon monoxide or a hydrocarbon and the oxygen supplied as air. A lined hole is formed by attaching weights 20 and a lining tube 12 to the burner and allowing the assembly to sink as the hole is deepened by the explosions. A cavity may be formed at the bottom by supporting the assembly against sinking and continuing the detonations. To form an unlined hole the weighted burner is sunk into the ground without a lining tube. In a modification, Fig. 6, for drilling non-vertical holes e.g. shot holes the burner is fixed to a thrust shaft 30 provided with spines 31 and is movable by a ram 32 having spines 33. The sets of spines 31, 33 resist removal of the burner from the hole and may be selectively retractable. The burner is advanced by extending the ram during firing while the spines 33 engage the hole walls, and retracting the ram between firings while the spines 31 engage the walls. By adjustment of the spines the assembly may be steered.
Patent GB-1409950-A (GB)
Title: Curable moulding compositions of low shrinkage based on
IPC: C08L33/00
Filed: 1973-09-19
Abstract: 1409950 Curable unsaturated polyester moulding compositions BAYER AG 19 Sept 1973 [20 Sept 1972] 43972/73 Heading C3P A curable moulding composition comprises an unsaturated polyester derived from an alpha, beta-unsaturated dicarboxylic acid; a copolymerizable vinyl monomer; an inhibitor; a pigment; an initiator; optionally a chemical thickener; optionally a thixotropic agent; and 5-30 wt. per cent of acid cellulose acetobutyrate and/or acid cellulose acetopropionate; and 1-15 wt. per cent of an optionally modified polystyrene; the above percentages being based on the total weight of the specified components with the exception of the pigment. Preferred percentages are 25-50 wt. per cent of the polyester and 40-60 wt. per cent of the vinyl monomer, on the same basis as above. In a preferred embodiment the polystyrene component is produced in solution in styrene in the presence of the cellulose derivative(s). The optionally modified styrene may be a copolymer of styrene with a monomer such as alpha-methyl styrene, vinyl toluene, t-butyl styrene, chlorostyrene, butadiene, (meth)acrylic acid and their esters and amides, beta-methacryloxyethyl sulphonic acid or phosphoric acid, and the neutral and acid esters of maleic and fumaric acids. In the examples a polyester derived from maleic acid, phthalic anhydride and 1,2-propylene glycol is used. The composition may be impregnated into a glass fibre mat which may then be moulded into shape and cured.