baber/WOPTO huggingface dataset:
Patent GB-973303-A (GB)
Title: An improved pressure-sensitive adhesive product
IPC: C09J7/38
Filed: 1962-03-26
Abstract: A pressure-sensitive adhesive product comprises a thermally stable, flexible, heat-resistant backing formed of a material selected from Fiberglas cloth, metal foils and polyester films, a first layer adherently formed upon said backing in surface engagement therewith from the heat-cured product of a first formulation containing a silicone elastomer formed of a mixture of methyl, phenyl and methyl phenyl polysiloxanes with sufficient cross linkages to impart elastomeric properties when cured, a filler as an essential ingredient and a curing agent which is a peroxide or a mixture of peroxide and tri-n-butylamine, and a second layer adherently formed upon the first layer in surface engagement therewith consisting of the normally tacky pressure-sensitive heat-cured adhesive product of a second formulation containing a silicone elastomer formed of a mixture of methyl, phenyl and methyl phenyl polysiloxanes having sufficient cross linkages to impart elastomeric properties when cured, and tri-n-butylamine as the curing agent of the second formulation. The tri-n-butylamine may be present in the second layer in an amount from 0,5 to 5 parts by weight per 100 parts by weight of the elastomer in the second layer.  The filler may be present in the first layer in an amount up to 30 parts by weight per 100 parts by weight of the silicone elastomer in the first layer.  The peroxide curing agent in the first layer may be present in an amount of 0,5 to 5 parts by weight per 100 parts by weight of the silicone elastomer in the first layer.  The filler is selected from titanium dioxide, hydrated alumina, zinc oxide, silicon oxide, asbestos, and calcium carbonate.  The peroxide curing agent in the first layer is selected from benzoyl peroxide, 2,4-dichloro benzoyl peroxide and tertiary butyl perbenzoate.  The coating compositions contain sufficient inert diluent to render them workable for coating.  The product may be produced by successively coating the backing with the first and second formulations, heating the first coating to displace the diluent and dry the coating and then heating the second coating to displace the diluent and dry the coating, and then heating the composite to a temperature in excess of 350  DEG F. to cure the silicone elastomers. The coatings may be applied by knife, brush or roller coating and other known methods.
Patent GB-114771-A (GB)
IPC: B23D3/04
Abstract: 114,771. Thomason, H. Oct. 3,1917. Lathes. - A copying-lathe, for machining propeller blades, of the type in which the work is stationary and the tool is moved under the con. trol of a guide or pattern-plate is shown in plan in Fig. 1 and in elevation in Fig. 2. The framing 1 is mounted on rails 2 so that it can move bodily and carries a rotatable disk 5 on which is mounted the pattern-plate 4. In the framing is mounted a spindle 6 to which is feathered a sleeve 7 carrying an arm 8 on which is mounted a tool-carrying head 9. The tool-holder 10 is in two parts hinged together and held in line by a spring. The head 9 is moved along the bar 8 by a screw actuated by hand or automatically. A guide-roller 16 is held against the pattern by a weight, springs, or other means acting on the sleeve. The spindle 6 is oscillated to move the tool across the work by the reversing-gear shown in Fig. 1 and comprising a pair of clutches 23, 24 operated by a lever 31 and shifting-bar 37 actuated by a screw 38 from the spindle.
Patent GB-114927-A (GB)
IPC: B23Q5/22
Abstract: 114,927. Richards, G. May 23, 1917. Planing-machine tables and other heavy machine parts are reciprocated by means of differential gear, two opposite members of which are driven in opposite directions at different speeds, the low-speed drive being constant and the high intermittent. The bevel c, Fig. 1, driven constantly by a stepped pulley a, and the bevel d intermittently driven at a higher speed by fast and loose pulleys b, g, both engage bevels h carried by a spider i<1> having external teeth to drive the gear l and reciprocate the rack o and table. When both bevels c, d are rotating, the table is advanced slowly for the cut, and when the bevel d is held stationary by a brake r acting on the pulley b, the table is returned quickly. The intermediate position of the member p leaves the pulley b and bevel d free and this tends to reduce the shock of reversal. In a modification, the high-speed bevel is actuated by a clutch member 18, Fig. 4, which is alternately pressed against a fixed clutch member 20 and a clutch member 10 which is mounted on a sleeve 8 driven by bevel gear 13. The spider 4 is mounted on a shaft 3 having a worm 2 engaging the rack 1. The clutch is operated by pneumatic pistons 25 controlled by a three-way valve 23, Fig. 2, reversed by stops 21 on the table engaging a lever 22. The speed of cut may be alternately increased and decreased by one-way stops 32 giving partial rotations to a valve 23<a> which controls the pneumatic device 35 for moving the clutch 34 into engagement with one of the cone pulleys 14, 15. The valve 23<a> has inlet and exhaust ports 39, 44, Fig. 6, and ports 40, 40* connected to the device 35. The rotating member comprises a disk 42 with six pairs of passages 45, 46 adapted to connect the ports 40, 40* to the port 44 and annular chamber 43 alternately. In another modification, (not shown), applied to an open-side planing-machine, the clutch member 19, Fig. 4, is formed as a twostep pulley, the bevel 9 is integral with another two-step pulley, and the shaft 3 operates the toolcarrying table through bevels and screw-and-rack gear. In a modification, adapted to be applied to existing machines, the motion from one driving pulley 47, Fig. 8, is intermittently applied by means of the pneumatically-operated clutch member 53 to the bevel 57, and continuously applied, through spur gears 50, 51, 52 and change-speed gear 67, 64, to drive the bevel 61 in the reverse direction. The spider 59 is connected to the rack pinion 75.
Patent GB-1400884-A (GB)
Title: Treatment of the feedstock for a aromatic hydrocarbon extraction process
IPC: C10G69/06
Filed: 1972-03-13
Abstract: 1400884 Treatment of cracked gasoline IMPERIAL CHEMICAL INDUSTRIES Ltd 22 Feb 1973 [13 March 1972] 11593/72 Heading C5E Cracked gasoline is treated by distilling to separate a first distillate containing all the components boiling no higher than 80‹ C., heating the distillation residue at 200-350‹ C., distilling the heated product to recover a second distillate boiling no higher than 250‹ C. and hydrogenating the second distillate. The cracked gasoline is produced in the thermal or steam cracking of naphtha or gas oil and boils in the range 0-250‹ C. The heating can be carried out continuously in a tubular heater or batchwise. The residue from the heating can be distilled by a flash distillation followed by fractional distillation. The hydrogenation can be carried out at a partial pressure of hydrogen of 300-500 p.s.i.g. in two stages, firstly in the liquid phase at 100-300‹ C. using a catalyst comprising Ni or Co together with Mo on alumina or Pd on alumina and secondly in the vapour phase at 300-600‹ C. using a catalyst of Pt on alumina or of Co + Mo on alumina; the catalysts are in the metal, oxide or sulphide forms. The hydrogenated product is subjected to solvent extraction using a solvent such as sulpholane, N-methylpyrrolidone, dimethyl sulphoxide, propylene carbonate, silver fluoborate, N-methylformamide, morpholine, alkyl carbamates or a mixture of diethylene glycol and/or dipropylene glycol with water, to separate an aromatic hydrocarbon product.
Patent GB-1413301-A (GB)
Title: Polysaccharide ethers and their use as flocculants
IPC: C02F1/52
Filed: 1972-03-13
Abstract: 1413301 Flocculating aqueous suspensions ALLIED COLLOIDS Ltd 23 Feb 1973 [13 March 1972] 11618/72 Heading C1C [Also in Divisions C3 and D2] A process for flocculating and thus dewatering sewage, sewage sludges and mineral suspensions comprises incorporating into the aqueous suspension constituting the sewage a water soluble polysaccharide which is substituted by groups each of which is attached to the polysaccharide through an ether linkage and each of which has the formula where n is 1 or higher, R 1  is H or CH 3  and R 2  and R 3  are the same or different and are hydrogen, C 1 -C 8  alkyl or hydroxy, C 1 -C 8  alkyl or, when taken together with the nitrogen atom to which they are connected, form a heterocyclic radical of 4-6 carbon atoms (see Division C3).
Patent GB-835876-A (GB)
Title: Improvements in or relating to die casting
Inventor: HAINES JOHN DEREK
IPC: B22D17/00
Filed: 1956-02-17
Abstract: 835,876. Casting composite articles. BIRMINGHAM SMALL ARMS CO. Ltd. Feb. 15, 1957 [Feb. 17, 1956], No. 11669/57. Divided out of 835,875. Class 83 (1). A die-casting machine comprises a ram 13 for injecting metal upwardly from a crucible 7 into a die, and means 4 for heating metal in the crucible. The machine is as described in Specification 835,875, but may have a heating element incorporated in the crucible itself, the temperature being regulated by a thermostat. Moreover, the twin-rams 22, 23 for moving the upper die 16 may be replaced by a single ram of long stroke.
Patent GB-1496814-A (GB)
Title: Semiconductor devices
IPC: H01L29/78
Filed: 1975-03-20
Abstract: 1496814 Semiconductor device passivation SONY CORP 20 March 1975 [30 March 1974] 11691/75 Heading H1K The surface of a semiconductor substrate is passivated by a polycrystalline silicon layer containing from 2 to 45 atomic per cent oxygen. The layer may be applied to the PN junction of a rectifying diode but as described is applied to at least the guard ring protected collector junction of a diffused planar silicon transistor formed in an N type substrate or an N epitaxial layer on an N + substrate. In manufacture the oxide masking used in the diffusion steps is removed and the polycrystalline layer deposited from a mixture of silane and nitrous oxide in a flow of nitrogen with the substrate at 600- 750 C., and overcoated with vapour grown silicon dioxide optionally separated from the ploysilicon by a moisture resistant layer, e.g. of aluminium. If silicon tetrachloride is used instead of silane a temperature of 1100 C is necessary. Alternative sources of oxygen are NO 2 , NO, O 2  and H 2 O vapour. The oxygen is present as a mixture of silicon monoxide and dioxide at the grain boundaries but is also dispersed in the grains themselves, the dispersion being removed by annealing, e.g. at 1100C for 30 minutes. The mean grain size is preferably from 100-1000 , and all the grains preferably have sizes within this range. Although the collector breakdown voltage falls with increasing oxygen content the leakage current decreases and if the emitter junction is also covered the amplification factor increases but remains stable.
Patent GB-200935-A (GB)
Title: Improvements in and relating to collapsible cardboard boxes
IPC: B65D5/02
Filed: 1922-04-26
Abstract: 200,935. Torii, K., and Torii, S. April 26, 1922. Knock-down boxes. -A collapsable box body or lid of square or polygonal shape is formed from a rectangular blank 1 - - 4 having a series of deep triangular flaps 1<a> 4<a> projecting from one of the longer sides of the rectangle and cut so that one side is shorter than the other side 15-16, and so that the shorter side, if extended, would meet the side 15-16 of the adjacent flap; a small reentering gap is thus left between the flaps and the flaps when overlapped in succession meet at the centre 29 of the base of the body or top of the lid and interlock, the last flap interlocking with the first. The number of flaps correspond to the number of sides in the box or lid, and the blank may have flaps along both of its longer sides so as to form both the base and lid or closure. A domed lid may be obtained by lengthening the sides of the flaps.
Patent GB-666552-A (GB)
Title: Improvements in or relating to agricultural fungicide and bactericide compositions
Filed: 1947-05-01
Abstract: Copper, zinc or cadmium derivatives of 8-quinolinol, 5 : 7-dibrom-8-quinolinol and 5 : 7-dichlor-8-quinolinol are precipitated on the surfaces of an inert filler by mixing and agitating a copper, zinc or cadmium salt such as the acetate or nitrate with an aqueous solution of a water-soluble acid salt of the 8 quinolinol in the presence of the inert filler.  The resulting 8-quinolinolate has a particle size within the range of 0.1 to 10 microns.  The Specification as open to inspection under Sect. 91 comprises also the preparation of bismuth, iron, cobalt and nickel derivatives.  This subject-matter does not appear in the Specification as accepted.ALSO:Seeds are treated with a mixture of copper, zinc or cadmium derivatives of 8 quinolinol, 5-7 dibrom- or 5-7 dichlor-8 quinolinol having a particle size of 0.1 to 10 microns, and a liquid or finely divided solid such as pyrophyllite, talc, fuller's earth or bentonite.  Insecticides such as D.D.T., nicotine or lead arsenate may also be added.  The Specification as open to inspection under Sect. 91 comprises also compositions containing manganese, bismuth, iron, cobalt and nickel derivatives and to the treatment of seeds with one of the metal 8 quinolinolates admixed with low fat content soyabean flour at a ratio of 1 to 5 ounces of the composition per bushel of seeds.  This subject-matter does not appear in the Specification as accepted.
Patent GB-793458-A (GB)
Title: Improvements in or relating to the speed control of electric motors
Inventor: SIEBER PETER WILLIAM
IPC: H02P29/00
Filed: 1955-04-22
Abstract: 793,458. Automatic speed control systems. MUIRHEAD & CO., Ltd. March 20, 1956 [April 22, 1955], No. 11731/55. Class 38 (4). In an arrangement for controlling the speed of an electric motor 1, the load applied to an alternator 2 driven by the motor is varied, in a circuit comprising a series condenser C, and a valve V in parallel with a rectifier R connected respectively to pass current in opposite directions, by changes in phase between the alternator output and a reference voltage source F, whose frequency is accurately controlled, which is applied together with a bias BB to the grid of the valve. The motor which is adjusted to be unable to sustain its normal load and the maximum load imposed by the valve is thus speed controlled. The reference frequency which may be controlled by a tuning fork may alternatively be adjustable, and the capacitor C should have a value such that in conjunction with the inductance of the alternator it forms a tuned circuit resonating at approximately the alternator frequency.
Patent GB-511718-A (GB)
Title: Improvements in or relating to valve structures and method of forming same
IPC: F01L3/14
Filed: 1938-04-19
Abstract: 511,718. Alloys. EATON MANUFACTURING CO. April 19, 1938, No. 11742. Convention date, June 28, 1937. Drawings to Specification. [Class 82(i)] [Also in Groups XXII and XXVIII. An alloy suitable for uniting the steel parts of exhaust valves for internal combustion engines and if desired to form the seating surface has the percentage composition C 0.4 to 0.5, Mn 0.7 maximum, Cr 13 to 15, Ni 13 to 15, Si 0.7 to 0.8, P 0.03 maximum, S 0.03, and the remainder iron. Another alloy has the composition C 0.76, Mn 0.14, Cr 9.04, Si 0.63, Ni 33.17, B 1.87 and the remainder iron. This alloy melts at 2075‹F. can be cast centrifugally at from 2150‹ to 2200‹F. and provides a seating of hardness 35, Rockwell C scale. These figures may be increased to 2130‹F., 2250‹F., and 63 Rockwell by employing an alloy of composition C 0.38, Si 0.23, Cr 14.53, W 18.08, B 3.8 and the remainder iron. For valves operating at normal or low temperatures hard solder or spelter may be employed whilst aluminium bronze is suitable for moderate temperatures.
Patent GB-664296-A (GB)
Title: Improvements in or relating to a child's vehicle
IPC: B62B11/00
Filed: 1949-05-03
Abstract: 664,296. Tricycles. OSWALD, M. May 3, 1949, No. 11751/49. Classes 136(i), 136(ii) and 136(iii) A child's vehicle propelled by a pair of levers comprises a frame 15, two rear wheels 20, a single front steering wheel 4 carried by a fork-like mounting which extends upwards in the form of a column 10 pivotally mounted in the vehicle frame, steering gear 7 effecting pivotal movement of the column, a pair of cranks 3 on the front wheel axle connected by a pair of rods 2 to a pair of two armed levers 1 pivotally mounted at 11 on the frame, ball and socket joints 5 forming the connection between the rods and levers adjacent the pivotal axis of the column thereby enabling the pair of two-armed levers to remain in their positions irrespective of the steering positions of the driving wheel. The steering wheel 7 is connected by cables 8 to a twoarmed lever 9 attached to the column 10 by means of a removable bolt 13. The vehicle may be used as a baby carriage in which case the bolt 13 is removed from the bore in the lever 9 and used to connect the column rigidly to the frame. The arms of each two-armed lever 1 are mounted for independent pivotal movement about the axis 11 of the vehicle frame and are interconnected by a removable cross bar 12. A seat is provided with a back rest 18 which may be inclined when the vehicle is used as a baby carriage. One of the two cushions 19 forming the seat may be put in front of the lower cushion so that the baby may sleep. The vehicle is provided with a pusher 16 which may be folded into a horizontal position when the vehicle is to be propelled by the child.
Patent GB-1084912-A (GB)
Title: Improvements in or relating to the heating of rooms in buildings
Inventor: FOWLER LEONARD JOHN
IPC: F28D1/02
Filed: 1964-03-19
Abstract: 1,084,912. Axial-flow fans. ANDREWSWEATHERFOIL Ltd. March 18, 1965 [March 19, 1964], No.11784/64. Heading F1C. [Also in Division F4] A space heater unit (see Division F4) incorporates a fan 26 mounted in a fan plate 25 having two opposite edges formed as runners which are slidable in corresponding runners on walls 23 of the heater structure, wherein the fan and its plate may be withdrawn from the heater unit for cleaning purposes.
Patent GB-1162434-A (GB)
Title: Improvements in or relating to Man-Hole Covers.
Inventor: GOODRIDGE JACK
IPC: E02D29/14
Filed: 1967-03-14
Abstract: 1,162,434. Manhole covers and frames. BRICKHOUSE FOUNDRY Ltd. 14 March, 1968 [14 March, 1967], No. 11800/67. Heading E1G. A square manhole cover 22, comprising two flanged triangular parts bolted together, is mounted in an inner frame 18 which can be telescopically raised in an outer frame 14 by changing corner shims 28. Each shim 28 comprises a triangular block having a peg and socket engagement 17 with the outer frame base 12.
Patent GB-982103-A (GB)
Title: Counter
IPC: G01R11/56
Filed: 1963-03-26
Abstract: 982,103. Counters. C. NORMANN. March 26, 1963, No. 11842/63. Heading G4D. An electricity or other meter in which the tariff is increased when the rate of consumption exceeds a predetermined rate is provided with two independently variable gear ratios. As described a synchronous motor 6 drives gear 28 through one of a cluster of eleven gears 13 and the gear 28 drives one side of a differential mechanism through a larger or smaller pinion 19a or 32 in engagement with one of three gears 33-35. The ratios are selected by levers 21, 21a, so giving a range of 66 ratios. The other side of the differential is driven by the commodity consumed. The counters 2, 3 are of known type and indicate the total consumption and the consumption above the predetermined rate, respectively.
Patent GB-454278-A (GB)
Title: Improvements in or relating to bakers' ovens and like heat treatment structures
IPC: A21B1/14
Filed: 1935-04-17
Abstract: 454,278. Bakers' ovens. MITCHELL, J., Newington, Shirley Road, and CANNER, E., 4, Winfield Road, both in Leicester. April 17, 1935, No. 11859. [Class 51 (ii)] A Perkins tube oven is heated by burners which are so arranged that the flames travel more or less along the exposed ends of the tubes. As shown in connection with a decker oven, there are three combustion chambers 6, 7, 8 each with two banks of tubes 1, the two lower chambers having a separate burner, consisting of a transverse pipe 13 with nozzles 13a for each bank, while the uppermost chamber has a single burner. The burners are of the bunsen type and the primary supply of air thereto is admitted from the combustion chambers and is restricted in quantity to produce a soft non-luminous flame. Secondary air enters through self-opening swing dampers 24, and passes down side flues to a transverse conduit beneath the combustion chamber 8. The heating - gases flow in series through the chambers 8, 7, 6 along a tortuous path determined by the position of the connecting- passages x, y, and the ends of the tubes may be bent to conform to the general direction taken by the gases. A baffle 19 may be fitted as shown to direct the up-flowing gases to the passage y. Reference has been directed by the Comptroller to Specifications 8651 /05, [Class 51], 2726/ 09, and 219,778, [both in Class 51 (ii)].
Patent GB-1412688-A (GB)
Title: Method in vacuum packing of compressible material eg foodstuffs  and similar products and an arrangement for the execution of  said method
IPC: B65B1/24
Filed: 1973-03-13
Abstract: 1412688 Packaging granulated or powder materials CHRISTENSSONS MASKINER & PATENTER AB 13 March 1973 11900/73 Heading B8C In a method for use in vacuum packing of compressible material, e.g. food stuff and similar products, in which method the material to be packed is precompressed in a package and then the package is introduced into a vacuum chamber for evacuation and final closing, the precompression takes place by means of a tool, e.g. a piston 23, Fig. 3, introduced into the interior of the package under pressure applied from outside, the said pre-compression taking place to such a degree that the material to be packed will assume, at least approximately, the volume which the material would have assumed if no mechanical compression had existed and the only compression had been that occurring when the package, after closure in the evacuation chamber, were again brought out into the outer atmosphere. The product may be subjected to the usual short-duration, shaking, or vibration. to reduce its volume to between 2 and 3% before the mechanical pre-compression which further reduces the volume from between 15, and 20%. For the required amount of precompression the degree of increase of volume of the product, due to resilient recovery, is considered to be negligible, the pre-compression providing a bond between the granules of the product instead of breaking off their outer fibres as is stated to be the case when the product is subjected to an intensive shaking to provide an equivalent reduction of volume. As shown in Fig. 3, a plastics-lined cardboard package 11 is placed in a casing 10 with its closure flaps 12- 14, and lining 15, extending above the upper edge of the casing 10, the product, after aninitial light shaking, being at level 16. A resilient skirt 20, carried by a vertically movable frame 17, is lowered into the mouth of the package with its lower edge 21 above the level 16. A piston 24, operated by a pneumatic motor 25, is lowered through the skirt 20 to compress the product by an amount which would have been obtained by the evacuation process without pre-compression. The piston 24 is provided with spring- loaded valves 32 which open when the piston 24 is withdrawn. After pre-compression the piston 24 and skirt 20 are withdrawn upwardly and the package is transferred to an evacuation chamber, not shown. In a somewhat similar arrangement, Fig. 4, small and larger pistons 40, 41, successively compress the product. The pressure is increased in steps up to its maximum value.