baber/WOPTO huggingface dataset:
Patent GB-1086700-A (GB)
Title: Circuit arrangement for producing a time-linear saw-tooth voltage from a pulse input
Inventor: KRALITSCHEK BRUNO
IPC: H03K7/08
Filed: 1963-12-09
Abstract: 1,086,700. Sawtooth generating circuits. DEUTSCHE AKADEMIE DER WISSENSCHAFTEN ZU BERLIN. Dec. 9, 1963, No. 44909/66. Headings H3P and H3T. In a circuit for producing a linear sawtooth voltage from a pulse, the duration of the sawtooth being proportional to the pulse amplitude, the charging capacitor C L  is connected in series between an input terminal E and a bootstrap follower 1, the input of the bootstrap circuit being clamped by a Zener diode D2. As described, the two sides of capacitor C L  are initially clamped by Zener diodes D1, D2 until a positive-going pulse is received at E when D1 becomes non-conductive so that capacitor C L  becomes discharged by a voltage proportional to the amplitude of input pulse. Diode D2 becomes non-conductive at the rear flank of the input pulse so that capacitor C L  becomes recharged linearly via the bootstrap cathode follower 1 until the Zener breakdown voltage of D2 is again reached when the circuit is once more clamped to its initial value. The duration of sawtooth obtained is thus proportional to the peak value of input pulse. Zener diode D1 limits input pulses of excessive amplitude. The circuit may operate on negative input pulses if the polarity of the diodes and power supplies is reversed. A cathode follower may be interposed between C1 and Dl.
Patent GB-1447929-A (GB)
Title: Hot gas engine heater head
IPC: F02G1/055
Filed: 1974-10-17
Abstract: 1447929 Hot gas engines UNITED STIRLING (SWEDEN) AB & CO 17 Oct 1974 44955/74 Heading F1S The invention relates to a heater head of a double-acting hot gas engine comprising at least one assembly 22, formed by a plurality of tubes each extending between and connected to a pair of manifolds 24, 27, one manifold of the or each pair being connected to the upper end of an engine cylinder 23 while the other manifold of the or each pair is connected to the upper end of a regenerator 26 according to the invention each of the tubes consists of two limb portions 25 and an intermediate portion 28 the two limb portions being substantially parallel to each other and the two manifolds are at an angle to each other, the tubes being arranged in a regular series progressing from a first one which has the largest limb portions 25" and the shortest intermediate portion to a last one which has the shortest limb portions 25' and the longest intermediate portion. In a complete heater head as described there are four assembly units 22 annularly arranged.
Patent GB-1276656-A (GB)
Title: Improved safety strap
Inventor: APPLETON RONALD JOHN WALTER
IPC: A62C13/00
Filed: 1968-09-21
Abstract: 1276656 Straps FIREMASTER EXTINGUISHER Ltd 28 Aug 1969 [21 Sept 1968] 44979/68 Heading A4X Also in Divisions A5 and E2] A safety strap for preventing inadvertent operation of the valve of a fire extinguisher comprises a collar 10 which in use is secured around a valve stem (17) Fig.4 (not shown) by threading head 16 through slot 13 until the neck 11 is engaged in the slot and a release loop 15 which is formed by passing head 16 through an aperture 14, said loop having a greater breaking strain under tension than the breaking strain of the collar. On pulling the loop away from the extinguisher valve the part of the collar having the least tensile strength, e.g. the neck, a part of the collar intermediate its ends or the part of the strap defining the aperture 13, is fractured, the collar is removed and the extinguisher is ready for use.
Patent GB-1069986-A (GB)
Title: Method of comminution and apparatus therefor
IPC: B01F13/00
Filed: 1963-11-14
Abstract: 1,069,986. Ball mills. U. S. STONEWARE, Inc. Nov. 14, 1963 [Aug. 22, 1963], No. 45089/63. Heading B2A. A mill comprises a vessel 1 containing an agitator 7 and grinding balls 12 the arrangement being such that upon relative rotation between the agitator and the vessel the balls are caused to be frictionally rotated about the centres thereof, and without significant impact therebetween. In the form shown, the agitator is rotated. Alternatively, the vessel may be rotated about the agitator or the vessel and agitator rotated in opposite directions. The agitator has a base 8 and one or more intensifying rings 10. The perimeter of the or each ring 10 may be rounded. The distance between the base and the inner wall of the vessel is such as to allow the passage of ground material but not of the balls 12. The agitator has a blade 16 for agitating the fines. Bulges, the counterparts of the rings 10, may extend laterally from the wall of the vessel. The vessel and grinding balls may be of ceramic and the agitator covered with ceramic. The vessel 1 may be used alone for dry grinding or solid or emulsifying one liquid in another. If a twostage operation is required as in wet grinding, a further vessel 2 is used the liquid flowing from vessel 1 to vessel 2 through an outlet 13 and the ground particles flowing out through an outlet 20 in the vessel 2. In a modification, the base of the agitator has a tapered outer surface and the lower end of the vessel has a corresponding taper.
Patent GB-1113244-A (GB)
Title: Improvements in or relating to the production of floor or wall panelling
IPC: E04F13/10
Filed: 1963-11-19
Abstract: Panelling units, coated on one face by a layer of polyurethane foam having an outer elastic skin, are made by placing the unit on a conveyor, applying a foaming mixture thereto, and passing the covered units under a second conveyor comprising a support having a surface of siliconised paper, whilst effecting the foaming.
Patent GB-1306173-A (GB)
IPC: B60T13/38
Filed: 1970-09-25
Abstract: 1306173 Fluid pressure brakes INTERNATIONAL HARVESTER CO 25 Sept 1970 [27 Oct 1969] 45727/70 Heading F2F A parking brake is operated from one of two control stations 10, 12 by either of two manually or fluid pressure operated valves 42, 44 whereby when one of the valves is moved to its brake apply position by means of handles 46 or 60 a fluid pressure is transmitted to an actuator 48 or 58 associated with the other valve to move it also to its brake apply position whereby the brake may be applied from one station and released from the other. An operator actuable selector valve 34 is movable to "front" or "rear" positions connecting a reservoir 20 to conduits 36 or 38. If the front station valve 42 is manually moved to its apply position a pressure chamber of a fluid-pressure released, spring-applied actuator 14 is vented to atmosphere through a conduit 28, a shuttle valve located in a tee 52, conduit 50, valve 42 and conduit 56. In this position air from reservoir 30 passes via conduit 32, valves 34, 42 and conduit 54 to the actuator 58 causing valve 44 to move to its apply position connecting a conduit 62, communicating via shuttle valve 52, with the actuator 14, to exhaust by way of conduit 38, valve 34, and conduit 40. Similarly if valve 44 is manually moved to its apply position conduit 62 is vented through conduit 66 and air passes from reservoir 30, through valve 34, conduit 38, valve 44, and conduit 64 to actuator 48 whereby valve 42 is also moved to its apply position. The shuttle valve includes a ball 72 which is forced against either of seats 68, 70 when air pressure is present in either of conduits 50 or 62. The system may be hydraulic or the fluid pressure of the control system may be hydraulic acting upon a pneumatic parking brake or vice versa.
Patent GB-1526973-A (GB)
Title: Coupling
IPC: F16H31/00
Filed: 1975-11-05
Abstract: 1526973 Ratchet clutches GARRETT CORP 5 Nov 1975 [8 Nov 1974] 45913/75 Heading F2C  In a ratchet clutch for transmitting drive between a prime mover and a gear-box wherein pawls 17 carried by a housing 16 fast with an output shaft 12 engage a ratchet 15 on a sleeve 28 fast with a driving shaft 11, the sleeve 28 and ratchet 15 are axially movable to disengage the clutch for both directions of rotation. The sleeve 28 and ratchet 15 are biased right for clutch disengagement by a spring 34 and are moved left against the spring bias by a fluid pressure actuator 22. The sleeve 28 is connected to a piston 21 of the actuator by bearings 26. The pawls 17 are biased into engagement with the ratchet 15 by springs 19 and stops 20 limit the pivotal movement of the pawls. An intermediate shaft 31 connects the sleeve 28 to the input shaft 11.
Patent GB-1489518-A (GB)
Title: Apparatus and a method for repairing piles
IPC: E02B17/00
Filed: 1975-11-05
Abstract: 1489518 Repairing piles L E FREDRICKSON and T L COATES 5 Nov 1975 [11 Nov 1974] 45952/75 Headings E1H and E1S A wooden marine pile is repaired by cutting away the rotten or defective wood to leave a top 12 and a bottom 14 pile section, placing a mesh cage 30 and a form bag 20 around the two pile sections 12, 14 and filling the bag 20 with fluid cement which subsequently hardens via a hose 58 which initially coils around the pile and is gradually withdrawn as the bag 20 is filled. Spacer members 40 locate the cage 30 and bag 20 relative to one another and to the pile, the members 40 each comprising two parts with the cage 30 passing between them. A support post 18 may extend between the top and bottom pile sections 12, 14. The bag 20 may be tubular or formed into a tube from a sheet having a sliding clasp fastener along two opposed edges.
Patent GB-1080318-A (GB)
Title: A method of combustion of sludge,and a furnace for use in the method
IPC: F23G5/05
Filed: 1964-11-11
Abstract: 1,080,318. Sludge consuming furnaces. VON ROLL A.G. Nov. 11, 1964 [Nov. 11, 1963], No. 46056/64. Heading F4B. A furnace for oombusting partially dewatered sewage sludge comprises a predrying compartment 3, separated by a wall 4 from a following combustion compartment 5 incorporating a drying zone 14, a primary combustion zone 15 and a burn out zone 16, and a conduit 10 to lead vapours from the predrying compartment 3 to mingle with combustion gases passing from the combustion compartment 5. A layer 8 of pressed sludge from shoot 2 is predried in compartment 3 by recycling flue gases at 250-300 C. from rear flue 11a through conduit 9, controlled by valve 9a, to the inclined bar grate 7. The vapours at 100 C. so evolved pass via line 10 to flue 11 to mingle with combustion products at 750-800 C. for deodorization. The fuel bed 8a passes under common wall 4 and layer thickness regulating slide 6 to combustion compartment 5 on grate 13. In drying zone 14 where the grate is protected by a cold air supply, the remaining vapours evolved by radiant heat from baffle wall 12, keep wall 4 cool. In primary combustion zone 15 and burn-out zone 16 the volatile and fixed combustible components respectively are burnt by a primary undergrate air supply at 250-300 C., through conduits 17 and 18, controlled by valves 17a<SP>1</SP>, 18a<SP>1</SP>. Both of these zones may be constituted by two subzones. A supplementary fuel burner 19 and secondary air ducts are provided. The combustion products are utilized in waste heat boiler 60. In a modification (Fig. 2) the prodrying compartment is heated by an air blast at 250-300 C., the resultant air/vapour mixture at 100 C. being used to provide part of the primary combustion air for zone 15.
Patent GB-1442654-A (GB)
Title: High-speed shearing off of workpieces
IPC: B26D5/12
Filed: 1973-10-03
Abstract: 1442654 Shearing GEPIPAKI TECHNOLOGAI INTEZET 3 Oct 1973 [4 Oct 1972] 46259/73 Heading B3W To shear a workpiece a blade is driven by a high speed ram which is braked as soon as it has covered a distance, after the start of shearing, equal to approximately 10% of the linear dimension of the workpiece in the direction of shearing. As shown, a ram 3, arranged to drive an apertured blade 5, has a rubber element 4 mounted in a cage 8. The ram moves with the blade until the cage 8 strikes a frame member 9 when the ram is braked by the pad 4, which occurs when about 10% of the diameter of the workpiece has been traversed. A rubber braking pad 7 acts on the blade 5 after the ram is braked so that the blade is completely braked by the time it has traversed 10-50% of the diameter of the workpiece. The rubber braking means may be replaced by springs.
Patent GB-960090-A (GB)
Title: A process for treating cellulosic textile materials and products resulting therefrom
IPC: D06M13/11
Filed: 1962-12-10
Abstract: Textile material is water-proofed by treatment with a monoepoxyalkane, monoepoxyalkyl ester or monoepoxyalkyl ether having at least 12 carbon atoms in the molecule in the presence of a Lewis acid catalyst.  The material may be of cotton, linen or wool.  It may be in the form or woven or non-woven fabric, thread or yarn.  The monoepoxyalkane may be a monoepoxy pentadecane, hexadecane, heptadecane, octadecane or nonadecane having a straight or branched chain or cyclic structure.  The monoepoxyalkyl ester may be a glycidyl, 1, 2-epoxybutyl, 2, 3-epoxybutyl or 3, 4-epoxybutyl ester. The acid of the ester may be trimethyl, dimethyl ethyl, tributyl, propyl diamyl, triamyl or dihexyl heptyl acetic acid.  The monoepoxyalkyl ether may be glycidyl octylphenyl or lauryl ether. The epoxy compound may be employed dissolved in hexane, heptane, octane, petroleum ether, gasoline, benzene, toluene, chloroform, carbon tetrachloride, trichlorethylene or ethyl acetate.  The Lewis acid catalyst may be phosphoric or a sulphonic acid, boron trifluoride, boron trifluoride-ether, bentonite or montmorillonite. 0.1-10% of catalyst based on the epoxy compound may be employed.  The epoxy compound may be applied by dipping, spraying or padding. Curing may be effected at room temperature to 100 DEG C. for 3 mins to 1 hr. After curing, the material may be rinsed in acetone. Specifications 825,805, 871,278 and 913,041 are referred to.
Patent GB-1091619-A (GB)
Title: Improvements in and relating to devices for separating adjacent articles
IPC: B65B23/14
Filed: 1966-10-19
Abstract: 1,091,619. Endless conveyers; packaging machines. SCHWEIZGRISCHE INDUSTRIEGESELLSCHAFT. Oct. 19, 1966 [Nov. 10, 1965], No. 46705/66. Addition to 912,449. Headings B8A and B8C. The apparatus of the parent Specification is modified in that the article engaging end 7b of the separating member 7 is offset relative to its pivot point 6. This promotes a sidewards deflection of the member 7 as it strikes an article 1 and ensures its positive entry between two adjacent articles.
Patent GB-1359627-A (GB)
Title: Production method and means for concrete articles
IPC: B28B23/04
Filed: 1972-10-11
Abstract: 1359627 Moulding concerte ties CONCRETE INDUSTRIES (MONIER) Ltd 11 Oct 1972 [27 Oct 1971] 46761/72 Heading B5A Concrete railway sleepers 58 cast with reinforcing wires 21 and rail support inserts 41 in a multi-cavity mould 32 are removed therefrom by inverting the mould 32 about the pivot bar 49 of a frame 48 (see also Fig. 7) releasably holding the mould 32 to rails 10 by pivotal claws 51. The latter allow the mould to slide along the rails 10 when the tension applied to the wires 21 by rams (28, Fig. 3) during moulding is released. The mould 32 may be inverted by a slewing crane (16, Fig. 5) via a cable 56 attached to apertured lugs 55 on the mould 32. During inversion the sleepers 58 are retained within the mould 32 by pins passing through apertures in the inserts 41. The removal of the sleepers 58 may be facilitated by spraying the moulds with oil prior to casting and by shaking and heating the mould 32 after iversion. The sleepers may be collected by a fork-lift truck (60, Fig. 5). The wires 21 may be positioned within the mould 32 by spacers (36-38, 40) placed between the ends of adjacent, aligned multi-cavity moulds (Figs. 1-3). Following casting, an abrasive saw may be used to sever the wires 21 between adjacent multi-cavity moulds. The mould 32 may be filled by a movable hopper (42, Fig. 4) provided with vibrators (44) and a screed plate (43). The concrete may be formed from portland cement, aggregate, sand and water.
Patent GB-1012704-A (GB)
Title: Electrical contact for an electrical connector
IPC: H01H1/42
Filed: 1962-12-11
Abstract: 1,012,704. Two-part couplings. UNITEDCARR Inc. Dec. 11, 1962 [April 16, 1962], No. 46779/62. Heading H2E. The contacts 36 of a printed circuit connector 10 each comprise a thin resilient element 38 for engagement with a printed circuit contact and a relatively rigid rod 40 (shown in dotted lines), one end of which engages a rear channel 50 of element 38 and the other end forms a terminal post around which a connecting wire may be wrapped. The rectangular rod 40, which has an integral head portion 72, is inserted into the U-shaped channel 50, deflecting spring entry arms 66, 68 and inwardly-bent channel wall portions 62, 64, until the head portion 72 abuts against a lug 52 extending from element 38 when wall portions 62, 64 spring back behind head 72 to lock it in position. The forward part 42 of element 38 is bent as shown to provide a resilient loop, and each element 38 is mounted in a channel 22 and its continuation 28 in the insulating body 12 of connector 10 by means of a tongue (not shown) which cooperates with body 12. The channels 22 are intersected by a central opening 24 for the printed-circuit board, and body 12 has mounting lugs on two sides.
Patent GB-1531479-A (GB)
Title: Seal for light modulating device
IPC: G02F1/15
Filed: 1975-11-12
Abstract: 1531479 Controlling light AMERICAN CYANAMID CO 12 Nov 1975 [23 Dec 1974] 46796/75 Heading G2F In a light modulating device comprising a liquid electrolyte 7 between a transparent front electrode 2, 3 carrying a layer 4 of persistent electrochromic material (e.g. WO 3 ) and a stainless steel plate 5 carrying a counter-electrode 6, a stainless steel plate 12 is cemented 11 to plate 5 over an extended area about a through hole 8 provided for introduction of the electrolyte.
Patent GB-1473923-A (GB)
Title: Power transmission chain
IPC: F16G13/16
Filed: 1974-10-31
Abstract: 1473923 Chains K HENNIG 31 Oct 1974 [23 Nov 1973] 47277/74 Heading F2Q In a power transmission chain, adjacent pivoted flat plate links each carry associated stop members, also composed of flat plate material, which co-operate to limit the pivoting angle between successive links by mutual abutment of their stop faces, the stop members each having the form of a sector circularly centred about a link pivot axis, with a central portion cut away, and the gaps between cooperating stop faces are covered against the entry of foreign bodies. A link 10, Fig. 4, may have a stop member 2a and a protective ring 3 attached by spot welding, engaging a similar stop member 2<SP>1</SP>b attached on the far side of an adjacent link 20, Fig. 6, providing a three-layer assembly having a pivot pin 6, Fig. 7. In an alternative embodiment, a link 90, Fig. 16, has attached a quadrant stop member 92, together with a central boss 93 in place of a pivot pin, and these members engage a semicircular cut-out in the next link 100, of similar form to the cut-out 94, 95, and a simple disc 110 is spot welded above members 92, 93, thereby covering over the gap and securing together a pivoting assembly, Fig. 19. In another embodiment, Fig. 21, an internally toothed ring 135, attached to a link 130, accepts two identical toothed stop members 133, 134, which may be lodged in a variety of orientations, providing adjustment of the pivoting angle permitted to a co-operating stop member 137<SP>1</SP>. In the embodiment of Fig. 21, and in other embodiments (not shown), the protective ring 135 may have its periphery located with sliding clearance within a guide ring 138 attached to the mating link. The members of the chain may be composed of metal, or of plastics, or of a combination of materials.
Patent GB-1372956-A (GB)
Title: Controlled spar-duration ignition system
IPC: F02P3/01
Filed: 1972-10-13
Abstract: 1372956 Ignition systems TEXACO DEVELOPMENT CORP 13 Oct 1972 [17 Dec 1971] 47314/72 Heading FIB A controlled spark duration ignition system for an internal-combustion engine comprises a high frequency continuous wave oscillator 11 operable for spark duration intervals and including a transformer 14 having a high voltage output winding 12, first circuit means for connecting the output winding to a spark gap or plug circuit, a control winding 17 on the transformer, second circuit means whereby subsequent to the beginning of any one spark duration interval a D.C. bias is  applied to the control winding and means controlled in dependence on the crank angle of the engine for cutting off the D.C. bias to determine the beginning of the next spark duration interval. When the transistor 62 is made conducting (at the end of a sparking interval) it provides a path for the D.C. bias current flow and at the same time completes an A.C. short circuit path. The induced voltage in the winding 17 is of sufficient amplitude to greatly exceed the Zener diode breakdown voltage and when the diode avalanches there is a short circuit path for the A.C. current to flow. Oscillation stops when the winding 17 is effectively short circuited. Figs. 2 to 5 (not shown) illustrate different types of oscillator as used with the system of the invention. Specification 1364009 is referred to.
Patent GB-1485540-A (GB)
Title: Integrated circuits
IPC: H01L29/08
Filed: 1975-11-18
Abstract: 1485540 Semi-conductor devices SIEMENS AG 18 Nov 1975 [20 Feb 1975] 47391/75 Heading H1K In an integrated circuit, particularly employing an inverted NPN transistor and a lateral PNP transistor, parasitic effects at regions 18 of PN junctions are suppressed by providing in the surface of a highly doped buried region 3 of a conductivity tape opposite to that of a semi-conducting substrate 1, at least one insulating or semi-insulating layer 5 and/or at least one layer having a high density of recombination centres, by ion implantation, e.g. of oxygen, nitrogen or carbon, before epitaxially depositing a semi-conducting layer 2 of the said opposite conductivity type, regions 8, 9, 10 formed in the epitaxial layer 2 being insulated from the other components of the circuit by silicon oxide regions 11, 13. The implanted ions either form ionized complexes with lattice vacancies or chemically combine with the substrate atoms. Ion implantation involving masking of the substrate surface, is topically carried out at ion energy of 150 Kev with a dosage of 10<SP>17</SP> ions/cm.<SP>2</SP> and is followed by annealing at a temperature above 1000 C. As shown, the regions 10, 8, 15 respectively form collector, base and emitter of the inverted NPN whereas the regions 8, 15 and 9 form the lateral PNP transistor. A silicon dioxide region 12 separates an emitter contacting zone 6 from the region 8 to reduce the surface area of the latter. N-type ions having a coefficient and diffusion higher than that of the N-type dopant used to produce the highly doped region 3 are introduced into the region 3 so that during a subsequent thermal treatment after the epitaxial deposition of the layer 2, ions having the higher diffusion coefficient diffuse into the layer 2 to improve the base-emitter efficiency and the PNP transistor.
Patent GB-1091199-A (GB)
Title: Method of inhibiting foam formation
Inventor: EVANS JOHN IDRIS
IPC: B01D19/04
Filed: 1965-11-09
Abstract: Foam formation in an aqueous medium is inhibited or controlled by introducing a stream of gas having dispersed therein a liquid antifoam composition in finely-divided form.  Specified processes to which the method may be applied are vat-dying, manufacture of paper pulp and fermentation processes, e.g. for streptomycin, tetracycline and oxytetracycline, and in the Example a solution of the sodium salt of the condensation product of oleic acid and methyl taurine has the dispersed anti-foaming agent passed thereinto.  The specified agent is dimethylpolysiloxane containing 5% silica.