baber/WOPTO huggingface dataset:
Patent GB-1531139-A (GB)
Title: Aseptic packaging
IPC: C09D7/12
Filed: 1975-12-04
Abstract: 1531139 Aseptic packaging ALCAN RESEARCH & DEVELOPMENT Ltd 4 Dec 1975 [11 Dec 1974] 49897/75 Heading B8C A method of aseptically packaging presterilized products comprises sterilizing packaging containers or material coated on at least one surface with a stabilized heat-sealable lacquer by ultra-violet light, #-rays or γ-radiation in an aseptic workspace, forming the material into containers if not already so-formed and filling the containers with pre-sterilized food, and closing the containers by forming a hermetic seal between two coatings of the lacquer. The lacquer is preferably based on vinyl chloride or vinylidene chloride polymers or copolymers with vinyl acetate, or medium or high molecular weight polyesters, and an aluminium foil or plastics laminate substrate may be used. The lacquer may be stabilized by inclusion of epoxy resins, saturated polyesters, copolymerized ester resins or polyacrylate resins to prevent excessive rise in heat sealing temperature as a result of irradiation. Preformed packaging containers 1 may pass below an infra-red lamp 11 and ultra-violet discharge tubes 4 prior to filling, e.g. with sterilized yoghurt or cream at a station 7. Lidding material 2 from a reel 5 is fed past a further infrared lamp 11 and ultraviolet tubes 4 to a station 10 at which lids are stamped out and heatsealed to the containers 1. Alternatively, Fig. 2 (not shown), a single web of paper-composite packing material(s) laminated with plastics-covered aluminium foil may be unwound from a reel (12) through a sterilizing chamber, formed into a tube (13) and filled and cross-sealed to form a series of packages (15).
Patent GB-1416894-A (GB)
Title: Process for producing porous flakes and process for producing  sheets therefrom
IPC: C08J9/00
Filed: 1972-10-31
Abstract: 1416894 Porous polymer flakes MITSUBISHI RAYON CO Ltd 31 Oct 1972 [12 Nov 1971 20 Dec 1971] 50060/72 Heading C3C [Also in Division D2] Porous polymeric flakes are made by (1) preparing a mixture of a fibre forming synthetic organic linear high molecular weight polymer and a finely divided inorganic component (as defined) in a solvent which has a boiling point lower than the softening point (as defined) of the polymeric component and which is capable of dissolving the polymeric component at elevated temperatures, the inorganic component being present in a weight fraction of W f  based on the combined weight of the polymeric and inorganic components and W f  satisfying the relation wherein V p  is the specific volume of the polymeric component (as defined), V a  is the bulkiness of the finely divided inorganic component (as defined) and V f  is the true specific volume of the finely divided inorganic component (as defined), (2) heating said mixture to dissolve the polymeric component in the solvent, and (3) extruding said heated mixture under a pressure of at least the autogenous pressure through an orifice into a zone of lower pressure and lower temperature thereby to evaporate the solvent and produce porous flakes having a plurality of irregular voids therein, the walls forming such voids having a thickness not greater than 5 microns. Sheets may be made by dispensing the porous flakes in a liquid in which the flakes are insoluble, beating or refining the dispersion to form fibrillated elements which are then formed into a web, and removing the liquid from the web. In examples the flakes consisted of a polymer which was polyethylene, crystalline polypropylene, polyacrylonitrile, polyethylene terephthalate, polyvinyl chloride, polystyrene, nylon-6,6 or polymethyl methacrylate and an inorganic compound which was a finely divided silicic acid, diatomaceous earth, magnesium carbonate, clay, talc, calcium carbonate or mixtures thereof.
Patent GB-1061460-A (GB)
Title: Data transfer apparatus
IPC: G06F5/08
Filed: 1965-11-25
Abstract: 1,061,460. Data transfer apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 25, 1965 [Dec. 23, 1964], No. 50104/65. Heading G4C. In apparatus for transferring data between. a first device such as a computer central processing unit and a second device such as a data receiver-transmitter terminal unit operable asynchronously with said first device, which apparatus comprises a recirculating store, data is entered from one of said devices into a first particular time-slot, shifted into succeeding adjacent time-slots as they become vacant and read-out into the other of said devices from a second particular time-slot. In the arrangement shown in Fig. 1, the recirculating store comprises a delay line 10, a gate 14, a character register 18, a gate 32 and a two-bit shift register 34. The capacity of the store is four 10-bit characters. The first bit of each character is an occupied status bit to merely indicate the presence of the character. Data is circulated in series but characters may be transferred in parallel between the character register 18 comprising 10 binary triggers and either the C.P.U. 20 (during character 4 timeslot) or the data terminal 26 (during character 1 time-slot). Forward shift logic 40, when conditioned by a signal on transmit lead 44, inspects each character in turn and on finding a vacant time-slot (no occupied status bit in register 34) shifts the next character forward in time by closing gate 14 and opening gate 16 whereby data passes directly from delay line 10 along leads 12, 12<SP>1</SP> to register 34. Thus, data entered into character 4 time-slot from C.P.U. 20 is transferred forward until it reaches character 1 time where it is accessible by terminal 26. In a similar manner, backward shift logic 42, when conditioned by a signal on receive lead 50, inspects each character in turn and by closing both gates 24 and 32 can delay a character in register 18 whereby a character entered from terminal 26 into character 1 timeslot is transferred successively to character 4 time-slot where it is accessible by C.P.U. 20. Fig. 4 (not shown) is a more detailed drawing of the apparatus and Fig. 5 (not shown) indicates how the control, clock and timing pulses are derived, using several counters.
Patent GB-1294688-A (GB)
Title: Improvements in domestic boilers
Inventor: ALLEN CHRISTOPHER GEORGE
IPC: F24H1/36
Filed: 1969-10-13
Abstract: 1294688 Block boilers HATTERSLEY BROS Ltd 12 Oct 1970 [13 Oct 1969] 50268/69 Heading F4A A boiler block for use in a domestic hot water or central heating boiler includes a single integral casting 1 which contains a number of waterways 2-7 with one or more flue gas passages 9, 11, 12 passing between them and a number of heat exchange webs 14 which extend across the flue gas passage or passages 9, 11, 12 and interconnect the parts of the casting surrounding the waterways. Cleaning openings 10 are preferably provided and are covered by removable covers 19. The end faces 17 of the casting 1 have end covers 23, 24 which have water inlet and outlet holes, e.g. holes in bosses 29, 29<SP>1</SP> and 30. Water flows in at the bottom of cover 24 and flows back and forth through the casting 1, through successively higher waterways 2 to 7, this sequence provided by baffles 26, 27 and 28. Holes 18 connect the spaces between adjacent webs 14. In the example illustrated in Fig. 2 the boiler block forms part of a gas-fired back-boiler unit intended for use both in central-heating and hot-water production and fitted into a fireplace, and in front of which a gas-fired space heater 31 is fitted. The block is supported on combustion chamber 32 with two gas burner tubes 33. Combustion air enters through tunnel 35 and a flue gas discharge casing 36 is fitted to the top of the block. A flue gas hood 38 extends from the space heater flue gas outlet 39. The casing of heater 31 is supported by fastening 40 and a plate 41, bracket 42 and slot 43 connection.
Patent GB-1392540-A (GB)
Title: Wheel slip control system for automotive vehicles and the like
IPC: B60T8/70
Filed: 1972-11-01
Abstract: 1392540 Antiskid braking systems WAGNER ELECTRIC CORP 1 Nov 1972 [17 Jan 1972] 50373/72 Heading F2F An antiskid braking system includes a first means to generate an output whenever (a) rotational acceleration or deceleration of a selected wheel exceeds a pedetermined threshold or (b) the change of the wheel velocity from that at the time the said threshold was exceeded is greater than a variable reference increment of wheel speed, a second output being generated whenever both (a) and (b) are satisfied and being used to decrease braking force. Air is supplied to brake actuators 28, 30 from a reservoir 26 via drivers valve 20, and relay valve 24, the circuit also including solenoid valves 12, 16 controlled by signals from an electronic control circuit 40 which responds to wheel speed signal generators 36, 38. When the deceleration of either wheel reaches a predetermined threshold a first output from circuit 40 energizes valve 12 so that air is slowly exhausted from the service side of relay valve 24 via orifice 13 of valve 12 and braking force is gradually relieved. If the wheel speed and acceleration are not suitably altered a second output signal from circuit 40 energizes valve 16 which exhausts service air pressure at a much more rapid rate. First and second wheel speed signals are generated by hall-effect sensors 52, 58 generating continuous pulse trains whose frequency varies in proportion to velocity and which are fed respectively to monostable multivibrators 54, 60 and filters 56, 62 the outputs being fed to a circuit 64 which selects the signal of the slowest wheel and transmits it to an amplifier 66 whose output is differentiated and fed to deceleration threshold circuit 70. The output of circuit 70 passes via OR gate 72 and amplifier 74 to input terminal 14 of valve 12. The output of a low speed detector 92 is applied to an OR gate 88 providing an input to AND gate 84 so that if the speed drops below about 5 mph the valve 16 will be energized to prevent wheel lock. The output of detector 92 is also applied to circuit 70 to prevent circuit noise such as that present in a low speed wheel signal from causing circuit 70 to generate a spurious output pulse. A fail-safe circuit is formed by OR gate 94, timer 96, switch 98 and fuse F1. If the triggering signal from gate 94 has a longer duration than the inherent delay of timer 96 switch 98 is actuated to provide a short circuit to ground and blow fuse F1. A polarity inverter 100 provides a voltage of predetermined polarity regardless of the manner of connection of the D.C. input power.
Patent GB-1283059-A (GB)
Title: A method and apparatus for the production of a mouldable pulp composition from cellulose material
Inventor: REINHALL ROLF BERTIL
IPC: B27N1/00
Filed: 1969-10-14
Abstract: 1283059 Mixing solid and liquid R B REINHALL 14 Oct 1969 [23 Oct 1968 7 Nov 1968] 50458/69 Heading B1C [Also in Division C3] In a method of and apparatus for mixing cellulose material with an adhesive for conversion into board, the cellulose material is disintegrated, e.g. in a disc with defibrator (see Fig. 1, not shown) at elevated pressure and at a temperature above 100‹C in the presence of a gaseous medium such as steam, and mixed with adhesive after treatment in a (preferably centrifugal) separator wherein the gaseous medium is separated. As shown the separator 44 is also a mixer, an aqueous phenolic thermosetting resin adhesive being injected at 54 and mixed with the fibres by means of a beater 48 which cooperates with grooves in the wall 52 of the device, the pulp collecting on the inner surface of the wall 52 while the steam collects at the centre. The pulp and steam are discharged together through outlet 58 and pass through conduit 62 for further treatment. The mixer-separator 44 and conduit 62 have heat exchange jackets 70, 64 whereby their surfaces may be cooled to condense part of the steam and prevent the adhesive polymerising to such an extent that a solid deposit is formed. The adhesive inlets 54 may also be cooled (see Fig. 3, not shown).
Patent GB-1208004-A (GB)
Title: Pump with piston and diaphragm
Inventor: SCHLOSSER PAUL WALTER
IPC: F04B43/067
Filed: 1967-10-04
Abstract: 1,208,004. Diaphragm pumps. P.W. SCHLOSSER. Oct.4, 1967 [Oct.28, 1966], No.50607/69. Divided out of 1,208,003. Heading F1A. The subject-matter is the same as that of the parent Specification, but the claims are directed to the actuating piston and cylinder assembly.
Patent GB-1118185-A (GB)
Title: Improvements in or relating to shoemaking
Inventor: BRADSHAW ARTHUR
IPC: A43D11/14
Filed: 1963-12-24
Abstract: At at least two stages of manufacture of a shoe the upper is subjected to an atmosphere of approaching but less than 100% relative humidity and temperature between 100 DEG C. and 120 DEG C. for from 15-45 seconds, and an upper shaping operation is performed shortly after each such treatment before the upper has had time to cool.  The upper is mulled in this manner before pulling over and preferably immediately before toe lasting.  Leather uppers should not dry in any way, and generally the mulling treatment adds not more than 2% by weight of moisture to the leather.  Preferably the moist atmosphere is directed against the ramp only at the sides and rearwards of the toe, the heel and toe being treated by overspill.  The shaping operation is preferably carried out less than 5 minutes, preferably 1 to 3 minutes, after mulling.  The upper is allowed to cool between mulling treatments, and a fine water spray applied for 3 seconds achieves this purpose without adding a significant amount of water to the upper.  If a leather upper is submitted to two or three mulling treatments each of 30 seconds no further setting treatment is required, but if two treatments of 20 seconds are used, a further heat setting, e.g. by directing a stream of hot air at at least 90 DEG C. against the upper, is preferably applied.  With certain upper materials air at 140 DEG C. may be applied for two minutes.  The further treatment also dries any adhesive applied for sole attaching. The method may be applied to uppers of other materials, e.g. polyvinyl chloride coated fabrics.
Patent GB-1282293-A (GB)
Title: Improvement to wide band antennas
IPC: H01Q9/30
Filed: 1969-10-17
Abstract: 1282293 Aerials LIGNES TELEGRAPHIQUES ET TELEPHONIQUES 17 Oct 1969 [23 Oct 1968] 51167/69 Heading H4A A wide band aerial comprises a conductive wire 1, Fig. 1, and a sleeve 3 of ferromagnetic material which surrounds said wire over a part (e.g. 10%) of its length. A serially connected adjustable lumped impedance may also be provided. It is arranged that the following relationship holds within the operating frequency band: where, The sleeve 3, Fig. 1, is located at the end of the wire 1 which is connected to a transmitter or receiver 2, and it is made of a material such as a ferrite, the permeability of which varies with frequency so as to allow the above relationship to be satisfied. The upper part of the sleeve 3 is tapered to improve matching, and a dielectric ring 4 is also provided for the same purpose. The sleeve 3 and the ring 4 are protected by potting material 5. In another embodiment, a construction similar to that shown in Fig. 1 is provided at the free end of the conductive wire (Fig. 7, not shown), but the ferromagnetic material has a permittivity which varies with frequency so as to allow the above relationship to be satisfied. A third embodiment (Fig. 5, not shown) having a ferromagnetic sleeve at the base end of the conductive wire, features automatically controlled D.C. biasing of said sleeve. A fourth embodiment (Fig. 6, not shown), also with a ferromagnetic sleeve at the base end of the conductive wire, has a series inductor with ferromagnetic core. Automatically controlled D.C. biasing of said inductor core is provided. The use of a varactor diode as a series impedance is mentioned.
Patent GB-1454274-A (GB)
Title: Method and apparatus for adjusting ink supply means in printing  machines
Inventor: HESTVIK O R
IPC: G03G15/10
Filed: 1973-11-05
Abstract: 1454274 Printing TOLERANS AB 5 Nov 1973 [7 Nov 1972] 51184/73 Heading B6C In a method and apparatus for determining the ink requirement of a print and setting ink supply means in dependence on the determined requirement a negative of the print is illuminated from one side and the light transmitted measured on the other and the ink requirement obtained from this measurement. The apparatus preferably comprises a base 20 having light tubes 26a, a glass plate 26 on which the negative rests and a compartmented lid 25, each compartment having a plurality of photo-cells which in total correspond to the area of print to be served by one ink supply means. In an alternative form the lid may have a single displaceable compartment instead of a plurality of fixed ones.
Patent GB-1174361-A (GB)
Title: Insulated Gate Field-Effect Transistor.
IPC: H01L29/76
Filed: 1967-11-10
Abstract: 1,174,361. Semi-conductor devices. RCA CORP. 10 Nov., 1967, No. 51215/67. Heading H1K. An IGFET comprises a high resistivity substrate on one surface of which, is a layer of semi-conductor material of one conductivity type throughout, spaced source and drain regions defining the ends of the channel within the layer, and a gate electrode extending adjacent to a portion only of the channel length and offset towards the source electrode. As shown, Fig. 2, the IGFET is produced by epitaxially depositing an N-type silicon layer 46 doped with arsenic or phosphorus on to a sapphire substrate 42, providing source and drain regions 48, 50 of higher conductivity, producing an oxide layer 52 by heating in steam, and providing source, drain and gate electrodes 56, 58, 60 respectively. The production of the oxide layer 52 generates an accumulation layer at the surface 54 of the layer 46 and this accumulation layer may be enhanced by heating the device in a hydrogen ambient before applying the electrodes. In a second embodiment, Fig. 3 (not shown), the substrate is of intrinsic or of high resistivity P-type silicon. A second insulated gate may be provided over the channel region.
Patent GB-1172071-A (GB)
Title: Improvements in and relating to Textile Machines
Inventor: MACKIE JOHN KAY PRINGLE
IPC: B65H67/02
Filed: 1965-12-02
Abstract: 1,172,071. Supply bobbins to winding machines. JAMES MACKIE & SONS Ltd. 22 Nov., 1966 [2 Dec., 1965], No. 51265/65. Headings D1F and D1J. Full bobbins are supplied to a textile winding machine by inserting them in a transportable bobbin storage device in such a way that they can be withdrawn without interlocking with one another, and using the filled storage device as a magazine at the winding station. The storage device may be filled at a spinning frame as described in Specification No. 1,118,052 and be of a form as described in specification No. 1,118,051. At the winding machine the storage device may be connected to the bobbin changer which is either stationary with the winding stations intermittently or continuously movable on a rotary or travelling winder pass the changer, or movable along the winging stations which are stationary. Alternatively the storage device may be stationary and the bobbin changer movable, with the changer holding a small number of filled bobbins and replenishing its supply from the storage device on depletion thereof. The donning and doffing arrangement used which may be part of the storage device is that fully described in Specification No. 1,118,052 and comprises a gripper which lifts an empty bobbin from a spindle and deposits it in the storage device, and a chute down which a filled bobbin which has been pushed out of the storage device by the empty bobbin slides to the spindle.
Patent GB-1183640-A (GB)
Title: Improvements in or relating to Synchronous Demodulators.
Inventor: KUEHNLEIN HANS
IPC: H04B10/60
Filed: 1967-11-10
Abstract: 1,183,640. Vehicle detectors. GRUNDIG E.M.V. ELEKTRO-MECHANISCHE VERSUCHSANSTALT Inh. MAX GRUNDIG. 10 Nov., 1967 [10 Nov., 1966], No. 51320/67. Heading G4Q. [Also in Division G1] A synchronous demodulator for demodulating an alternating signal U<SP>1</SP> obtained by detection of a fluctuating light beam comprises a photoelectric switch 1 which is illuminated by light modulated in synchronism with the fluctuating light beam. The capacitor 4 is thus charged to a positive or negative D.C. voltage U through load resistor 3. The photo-electric switch 1 may be a photoconductive cell. Since this may not respond sufficiently rapidly to provide the required phase relationship in the demodulation, a photodiode may be used, Fig. 2 (not shown). In order to remove the photo-electric voltages produced by illumination of a photodiode, two photodiodes connected in series and in opposite polarity may comprise the switch 1. Alternatively an arrangement of photodiodes 9, 9<SP>1</SP> and non-radiation responsive diodes 10, 10<SP>1</SP> are used. When unilluminated the switch is non-conductive in either direction, but on illumination it may conduct, photo-electric voltages generated in the photodiodes however being blocked by diodes 10, 10<SP>1</SP>. The apparatus may be used in vehicle detectors, the light beam modified in some way by the presence of a vehicle providing the signal U<SP>1</SP> and the light illuminating switch 1, being light unaffected by the vehicle.
Patent GB-1462859-A (GB)
Title: Intumescent materials
IPC: C08G18/66
Filed: 1973-11-07
Abstract: 1462859 Intumescent polyurethane foams DUNLOP Ltd 3 Oct 1974 [7 Nov 1973] 51752/73 Heading C3R A method for the production of an intumescent, flexible polyurethane foam comprises reacting together in a foam-forming reaction mixture: (a) a polyester polyol, (b) an organic polyisocyanate, e.g. tolylene diisocyanate, (c) a catalyst for the reaction of said polyisocyanate with the active hydrogen-containing groups of polyol (a) (d) a blowing agent, e.g. water, methylene chloride or trichlorofluoromethane, the reaction mixture containing a combination of (e) a polyol, not containing nitrogen atoms (said polyol being different from polyol (a)) said polyol (e) having 4 or more primary -OH groups, and an OH number of 300 to 700, and (f) an ammonium phosphate or a phosphate of an amine, the amount of the combination of (e) and (f) preferably being at least 10% wt. of polyol (a), and the weight ratio of (e) to (f) preferably being from 1 : 1 to 1 : 6. Suitable polyols (e) are oxyalkylated polyester polyols; preferred polyol (e) is an oxypropylated sugar alcohol. The reaction mixture may optionally contain a surface active agent. In the example a polyurethane foam is prepared from (a) a diethylene glycol polyadipate, (b) an 80 : 20 mixture of tolylene diisocyanate, (c) N-ethyl morpholine, (d) water, (e) an oxypropylated modified sorbitol of OH number 495, (f) ammonium polyphosphate, and an organosilicone surfactant.
Patent GB-1537276-A (GB)
Title: Lenses
IPC: G02B25/00
Filed: 1975-12-18
Abstract: 1537276 Bi-ocular magnifiers PILKINGTON PE Ltd 6 Dec 1976 [18 Dec 1975] 51923/75 Heading G2J A magnifying lens (e.g. for observing with both eyes simultaneously an image intensifier face plate or the like) has a relative aperture exceeding F/1 and comprises three groups; (a) a first group comprising a positive element in front of a singlet element of negative or substantially zero power, and a concave front surface (b) a central group which is convergent (c) a rear group comprising at least a positive element in front of a rear positive element, the rear positive element being meniscus with a divergent rear surface. Ten Examples in accordance with Fig. 1, and one Example each of Figs. 2 and 3 are given.
Patent GB-1434116-A (GB)
Title: Liquid crystals
IPC: C09K19/50
Filed: 1973-11-08
Abstract: 1434116 Liquid crystal compositions EASTMAN KODAK CO 8 Nov 1973 [13 Nov 1972 (2)] 51944/73 Heading C4X [Also in Divisions H3-H5] Mixtures of nematic and cholesteric liquid crystal materials exhibiting persistent optical scattering after the application of an electric field comprise (a) 90% p-methoxybenzylidenep-butylaniline and 10% cholesteryl oleyl carbonate; (b) 65% p-pentoxycarbonyloxy-N-(pvaleryloxybenzylidene)aniline, 30% N-(p-acetoxybenzylidene) - p - methoxycarbonyloxyaniline, and 5% cholesteryl 2-ethylhexanoate, all percentages by weight.