baber/WOPTO huggingface dataset:
Patent GB-870745-A (GB)
Title: Improvements in making fine grained castings
IPC: B01J23/42
Filed: 1959-08-31
Abstract: 870,745. Casting processes. HOWE SOUND CO. Aug. 31, 1959 [Nov. 21, 1958], No. 29631/59. Class 83 (1). In a method of making fine-grained castings, a nucleation catalyst is applied to the surface of a pattern so that on removing the pattern from the mould at least a portion of said catalyst is left on the mould surface. In particular examples, platinum is the catalyst when casting a refractory cobalt alloy containing nickel and chromium. In another example, when casting the same alloy, a wax pattern was coated with an aqueous sol of cobaltous hydroxide. After elimination of the wax pattern the cobaltous hydroxide is reduced to the more effective metallic form by introducing n-heptane into the hot mould. In further examples, the pattern was coated with a refractory dip coat containing cobaltic oxide which may or may not be subsequently reduced to metallic form by trichlorethylene. Part, only of the pattern may be coated with the catalyst, or catalysts of different, degrees of effectiveness may be used at different parts of the pattern to control differently the degree of nucleation of different parts of the castings.
Patent GB-617496-A (GB)
Title: A new or improved cut-off switch for temperature control of electrically-heated apparatus
IPC: H01H35/26
Filed: 1946-10-04
Abstract: 617,496. Thermal switches. PALLANT, W. C., and EPSOM, S. C. Oct. 4, 1946, No. 29643. [Class 38 (v)] A thermal switch has movable contacts actuated by the increase in fluid pressure in a capsule with a diaphragm or in a bellows, and normally stationary contacts which may be moved in an emergency by spring tension when released by a thermal element. In Fig. 1 a capsule 6 closed by a diaphragm 3 communicates via an inlet 5 with the body of liquid in an electric heater or radiator 46. As the liquid expands, a plunger 7 secured to the diaphragm 3 operates a pivoted lever 8 against the pressure of a spring 16 to open a tumbler switch 14 when the desired temperature has been attained. To adjust this temperature, a rod 18 may be moved along a guide member 17 to alter the inclination of a pivoted lever 9 on which the spring 16 bears. The fixed contacts 15 of the switch are mounted on a rod 41 which is normally held against spring tension by a collar 42 abutting a bimetallic element 44. Under excess temperature conditions, in the event of the failure of the switch 14, the bimetal distorts to permit the retraction of the contacts 15. In Figs. 2 and 3 (not shown), a bellows is used in place of the capsule and the adjustment is effected by rotating a screwed member which bears on the end of the lever 9. In each embodiment the moving contacts may be resiliently mounted on the lever 8 and the capsule or bellows may be sealed and contain mercury or other liquid and be suitably disposed for heat conduction.
Patent GB-744589-A (GB)
Title: Improved method for the preparation of hard carbides and carbides so produced
IPC: C22C1/05
Filed: 1953-10-27
Abstract: Hard carbides are prepared in a compact non-porous form by sintering an intimate mixture, in compressed form, comprising a refractory metal and a carbide of said metal which is capable of forming a lower carbide, so as to produce a product comprising a carbide or mixture of carbides not containing free metal. Tungsten carbide or a mixture of tungsten carbide, titanium carbide and tantalum carbide may be employed.  The refractory metal may be employed as such or in the form of a compound which is capable of conversion to the metal under the condition of reaction.  The compressed mass may be first heated to a temperature below that of sintering, machined or crushed, and then heated to the final temperature.  The hard carbides produced may be used in the production of sandblasting nozzles.  They may also be made in the form of rods which may be melted by means of a blow pipe for deposition on oil prospecting drills.ALSO:Hard carbides are prepared in a compact non-porous form by sintering an intimate mixture, in compressed form, comprising a refractory metal and a carbide of said metal which is capable of forming a lower carbide, so as to produce a product comprising a carbide or mixture of carbides not containing free metal.  The carbide may be tungsten carbide, alone or in admixture with titanium carbide and tantalum carbide. The refractory metal may be employed as such or in the form of a compound which is capable of conversion to the metal under the conditions of reaction.
Patent GB-832424-A (GB)
Title: Pharmaceutical compositions containing salts of tetracycline or oxytetracycline
IPC: A61K31/65
Filed: 1957-09-20
Abstract: Aqueous injectable preparations of salts of tetracycline or oxytetracycline comprise (1) one or more of said salts, (2) one or more alkali-metal or alkaline earth metal bisulphites, (3) one or more parenterally-acceptable carboxylic acid amides, (4) one or more parenterally-acceptable organic and/or inorganic bases in amount such that the pH is 5.0-7.0.  Advantageously the pH is adjusted by an alkanolamine which corresponds to the basic component of the carboxylic acid amide used such as ethanolamine or diethanolamine in conjunction with lactic acid hydroxyethylamide or acetic acid hydroxyethylamide, and 1,2-dihydroxypropylamine in conjunction with succinic acid-1,2-dihydroxypropylamide.  Specified components: (1) oxytetracycline hydrochloride and tetracycline hydrochloride, which may be admixed with a compound giving a magnesium ion such as magnesium chloride hexahydrate, (2) sodium bisulphite, (3) amides of acetic, lactic, b -hydroxybutyric, succinic, adipic, tartaric, gluconic, salicylic acids and tartaric acid N - (2 - hydroxypropyl) - ethylene diamide and salicylic acid-ethanol-l-methyl-isopropanol-amide, (4) sodium hydroxide, ethanolamine, diethanolamine, b ,g  - dihydroxypropylamine, 1 - aminopropanol - 2, 1 - aminopropanol - 3, diisopropanolamine, 1,2 - dimethylethanolamine, N - aminoethylethanolamine, 2 - amino-2-methyl-1,3-propanediol.
Patent GB-1522951-A (GB)
Title: Method of duplication of a video frequency signal recording
IPC: G11B7/26
Filed: 1975-07-15
Abstract: 1522951 Duplicating video recordings using photographic methods THOMSON-BRANDT 15 July 1975 [16 July 1974] 29726/75 Heading G2X A video frequency signal recording is duplicated by a) exposing a transparent carrier having a photo-sensitive layer to a laser beam modulated by the video frequency signal, the beam and carrier moving relatively to each other to produce a latent image in the form of a spiral track b) developing the resin to remove the exposed areas c) depositing a layer of material opaque to x-rays, e.g. carbon or an alloy of Mn and Bi, on the bared carrier and remaining resist d) removing the remaining resist and overlying material to leave a mask and e) exposing a sensitive resin covered disc to x-rays through the mask.
Patent GB-745346-A (GB)
Title: A hardenable synthetic resin moulding composition
IPC: C08L1/02
Filed: 1951-12-19
Abstract: A hardenable synthetic resin moulding composition having a bulk density of not less than 0.4 g./cc., comprises a phenol-aldehyde resin and a filler consisting of chemically lignin-free sawdust.  The sawdust used is freed of its incrustations in known manner by treatment with alkalis or sulphites.  Resins specified are resols and novolacs. Specifications 322,158, [Class 22], and 568,335 are referred to.
Patent GB-469439-A (GB)
Title: Improvements in or relating to mechanism for opening and closing doors or the like
IPC: E05F15/02
Filed: 1936-11-02
Abstract: 469,439. Electrically-actuated valves. JOHNSTON, G. W. P. Nov. 2, 1936, No. 29776. [Class 135] [Also in Group XXV] A pneumatically-operated door is controlled by a valve 4 which is actuated through a rocking arm 6 by two or more solenoids 12, 17 having their cores attached to the rocking arm ; the arrangement is such that the valve is moved to either of two positions by the momentary energization of the appropriate solenoid, remaining in the set position until again operated. Compressed air is supplied to the valve at 7, and passages 8, 9 are connected to two pneumatic cylinders or to opposite ends of a doubleacting cylinder ; the valve is arranged to connect either of the passages 8, 9 to the passage 7 and the other passage to exhaust. An additional solenoid which sets the valve for opening the door may be provided, controlled by a passenger's switch or energized automatically if the closing movement of the door is obstructed. A spring-pressed detent may be provided to hold the valve in its two positions. Motion of the valve is limited by a stop pin 19 on the arm 6 engaging abutments 20.
Patent GB-407642-A (GB)
Title: Improvements in or relating to gear pumps and motors
IPC: F04C15/00
Filed: 1933-10-28
Abstract: 407,642. Gear - wheel engines. VICKERS, H. F., 7752, Dubois Street, Detroit, Michigan, U.S.A. Oct. 28, 1933, No. 29948. [Class 110 (ii).] Means for balancing the gears 2, 3, of a pump or engine comprise chambers 8, 9, which are connected by conduits 10, 11, each pair to one of the ports 4, 5. Thus in the case of a pump, the pressure in chambers 8 is the same as the inlet pressure at 4 and the pressure in chambers 9 equals that of the delivery in port 5. Each guide surface 12 is wide enough to completely cover the peripheries of two teeth. The pump or engine may have three gears in mesh.
Patent GB-677275-A (GB)
Title: Improvements in or relating to kilns
IPC: F27B1/00
Filed: 1949-11-23
Abstract: 677,275. Shaft kilns. NEWELL & CO., Ltd., E., and HOWDEN, P. Oct. 19, 1950 [Nov. 23, 1949], No. 29970/49. Class 51 (ii). In a cross-draught shaft kiln wherein small limestone is fed from a hopper 21 and discharged by a rotary valve 23 from a hopper 24, the charge material passes down two shafts 11 defined by two sets of louvres, each set comprising outer louvres 7, 8 and inner louvres 9, 10, built into the refractory lining 4, and spaced from the end walls thereof to form vertical shafts 5 and 6 divided by refractory partitions 15, the central chamber 12, having a refractory arch 13 forming the roof of a combustion chamber 14 and a cast-iron arch 16 disposed below an off-take 17 for spent gases. The lower louvres 7 and 9 in the calcining zone below each partition 15 are made of refractory material and the upper louvres 8 and 10 in the drying and preheating zone above each partition 15 are made of cast-iron. From the combustion chamber 14, which may be fired by solid, liquid or gaseous fuel, the heating gases pass across the charge material four times before reaching the off-take 17 which is connected to an exhaust fan. Air drawn through flattened cooling tubes 25 and an air chest 26 in the discharge hopper 24 by a fan 27 may be supplied in part to the chamber 14 as preheated combustion air.
Patent GB-484407-A (GB)
Title: Improvements in or relating to paper-feeding mechanism for accounting machines
Filed: 1936-11-04
Abstract: 484,407. Typewriters, &c. BRITISH TABULATING MACHINE CO., Ltd. Nov. 4, 1936, No. 30010. Convention date, Nov. 5, 1935. [Class 100 (iv)] Platen-rotation for blanking.-A sheet is fed manually into an accounting-machine and is arrested when the first blank-line reaches the printing line, by means of an electromagnetically operated lock for the sheetfeeding device, the electromagnet being in circuit with contacts which are closed by the top corner of the sheet, and a punch being provided for cutting a step out of the corner at each operation of the machine. In the mechanism shown in Fig. 1, the platen 2 of a record-controlled tabulating-machine is provided with a brake-drum 4 co-operating with a band 5 which is connected to the armature 6 of a magnet 7 in series with contacts 8. A block 11 engaging the contacts is mounted between guides 9, 10 and is arranged in the path of the top right-hand corner of the sheet K. A punch 17 for cutting successive steps k, k<1>, Fig. 3, in the sheet is connected to the armature 18 of a magnet 19 which is energized during each printing operation. The sheet is fed into printing position by turning the platen manually and when the block is engaged by the sheet, the block is lifted slightly, the contacts are closed, and the platen is locked. The highest blank line on the sheet is thereby brought into printing position, line-selection being determined by the number of previouslycut steps k, k<1>. The armature 6 closes contacts 22 for initiating record-feeding and printing cycles. During a total-printing cycle, a magnet 14 is energized, and the armature thereof moves laterally the block 11 to permit of ejection of the sheet. The block can also be moved laterally by means of a finger-piece.
Patent GB-701319-A (GB)
Title: Improvements relating to the marking of webs of paper, card or the like or sheets cut from such webs
IPC: B26D11/00
Filed: 1950-12-08
Abstract: 701,319. Sheet delivery apparatus. BATTERSBY, J. E., and MASSON SCOTT & CO., Ltd. Dec. 8, 1950, No. 30072/50. Class 100 (1) Apparatus for providing a mark on the edge of a sheet in a predetermined number of sheets cut from a web or webs by cross cutting mechanism to facilitate separation of the sheets into counted batches, comprises a spray device or gun supplied with ink or other suitable pigment and controlled in accordance with a predetermined number of sheets cut or delivered to apply a mark to a cut sheet or to the web which is subsequently cut to form the sheet so that the mark is appropriately positioned at the edge of the cut sheet. The apparatus shown comprises a rotary knife 9 for transverse cutting of a web 11 mounted on a shaft carrying a cam 12 which makes contacts 14 once for each revolution of the knife 9 so as to send an impulse through a junction box 16 to a counter 17 which may be as described in Specification 611,978. After a predetermined number of sheets have been cut the counter 17 makes ready an energizing circuit to a solenoid 23, and energizes a further solenoid 37 so that an ink absorbing roller 36 is pressed against the web. The solenoid 23 is then energized over contacts 15 so as to actuate a pivoted lever 26 of a pneumatic spray gun having a nozzle controlled by a needle valve 27, and reservoir 30 containing ink. A longitudinal mark is then made over about three quarters of the length of a sheet, surplus ink being removed by the roller 36. The web is also cut longitudinally by slitting knives 7 the mark being positioned so that after slitting the mark is at the edge of the two webs. After cutting the sheets pass to a conveyer belt and finally to a stack, Fig. 1 (not shown). The sheets may be counted photo-electrically, and if thick material is used the marking may take place after the longitudinal slitting. The spray gun may be positioned so as to mark the sheets after they have been cut in which case the speed of the conveyer must bear a fixed relationship to that of the cutting and counting mechanism.
Patent GB-818499-A (GB)
Title: Improvements relating to automatic-feed measuring devices
IPC: B65B1/32
Filed: 1956-10-03
Abstract: 818,499. Automatic feed weighers. BARNES, R. H. Jan. 2, 1958 [Oct. 3, 1956], No: 30093/56. Class 143 [Also in Group XXX] Weigh pans or other measuring devices (not shown) are fed in turn through gaps 11 (Fig. 2) in a stationary wall 10 by a rotary plate 1 co-operating with an arm 33 which is.freely pivoted on axis 2 and is carried around by the material on plate 1 until halted by one of the abutments 32 whereafter the arm feeds the weigh pan until, on attainment of a predetermined weight in the pan the abutment 32 is withdrawn and the arm moves on to the next pan. When the arm is stationary a belt 40, driven by a pulley 41 rotatable with the plate 1, moves superimposed V belts 38 which facilitate transfer of articles or material from the plate to the pan. The plate is fed by a conveyer 8 from a hopper 9. Each gap 11 is controlled by a vertically sliding gate 13 (Fig. 3) which is closed by a counterweighted linkage 14-22 when bar 20 is released from its seat 31 on the end of a lever 28 due to the lever being moved anti-clockwise by upward movement of the weights pan 26. This movement of the linkage also retracts abutment 32 out of the path of arm 33.
Patent GB-1438371-A (GB)
Title: Control switches
IPC: H01H1/28
Filed: 1973-06-26
Abstract: 1438371 Cam-operated switches PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 26 June 1973 30180/73 Heading H1N A switch for controlling a domestic appliance such as an electric blanket, for example, comprises a base supporting two spring leaves 15 each fixed at one end, each leaf being divided integrally into at least two blades 16, the blades having movable ends each of which may be deflected to touch a respective fixed contact 13 carried on the base, in which independent deflection of the blades 16 is effected respectively by at least two rotatable cams 18, 19 located between the leaves 15. As shown, the blades are bent inwardly at 17 such that the cams 18, 19, which are secured on common axle 21 having a knob (6, Figs. 1, 7 and 8, not shown), may be slid along a line 77 to a position where they can be rotated without acting on the blades, and then subsequent sliding to the left actuates the blades 16 as claimed in Specification 1,438,372. Cams 18 and 19 are preferably star-shaped with one point cut off in the case of cam 18, while cam 19 (Fig. 5, not shown) has four points omitted, thus providing three different contact conditions (Fig. 6, not shown) allowing a series or parallel or one only energization of two circuits (Fig. 2, not shown). The knob (6) has an internal spring blade (28) acting on a hexagonal hub (25) to locate its angular positions.
Patent GB-1472745-A (GB)
Title: Pneumatic tyres
IPC: B60C9/02
Filed: 1973-06-26
Abstract: 1472745 Pneumatic tyres DUNLOP Ltd 26 June 1974 [26 June 1973] 30256/73 and 12306/74 Heading B7C A pneumatic tyre has a reinforcement formed of metal wire felt produced by laying aligned crimped continuous wires or bunches of wires under tension and then relaxing the tension so as to cause intermingling of the wires or bunches in three dimensions to form a mat. The wire of the felt may be steel with a diameter of 0À04-0À71 mm. and may be brass or zinc plated. The felt may be a felt which has been needled with a barbed needle to consolidate it, and may be rubberized in which case the weight of wire in the felt may be no more than 80% of the total weight of the felt. Where bunches of wire are used these may have been twisted prior to crimping to form strands and strands may have been twisted together to form cords. Specifications 1,016,551 and 1,472,065 are referred to as disclosing examples of felts suitable for use in the tyre. In one embodiment, Fig. 2, a felt reinforcing layer 8 is located at the exterior surface 14 of a sidewall 9 of the tyre. The layer 8 may extend from the radially outermost part of the sidewall 9 to the junction of the sidewall with the associated tyre bead portion as shown or may be confined to the central region of the sidewall. The Fig. 2 embodiment may be modified by instead positioning the layer 8 on the outer surface of the tyre carcass 5 (Fig. 3, not shown), or on the interior surface of the tyre (Fig. 5, not shown), or between two plies of the carcass (Fig. 6, not shown), and in the latter case the layer 8 may be extended into the tyre crown region. Alternatively, Fig. 4, the layer 8 may be replaced by a plurality of layers 10-13 or a folded strip of felt forming the whole of the sidewall 9 between the carcass 5 and the surface 14. In the embodiment shown in Fig. 7 the tyre has a breaker 20 of felt or cord-fabric and the tyre tread band 4, which is unpatterned, contains superposed layers 21-25 of felt extending over substantially the whole width of the tread band. The layers 21-25 may be replaced by a folded strip of felt. The tread band may alternatively be patterned with a groove or grooves, each rib defined by the groove or grooves containing a group of superposed layers of felt and there being a layer of felt at the base of the groove or grooves extending across the whole width of the tread band. In the Fig. 8 embodiment a bead portion 27 of the tyre is provided with a bead wire 28 about which a portion 29a of a carcass ply 29 is turned up. The bead portion 27 is further reinforced by a felt chafer strip 30, an apex component 33 formed of a plurality of strips of felt, and a felt reinforcing strip 32 extending about the end 29b of the turned-up ply portion 29a. The strip 32 may be extended radially inwardly and turned about the bead wire 28 and the component 33 may instead be formed by a folded strip of felt. The felt breaker, sidewall, tread and bead reinforcements described above may be used together in the same tyre.
Patent GB-850505-A (GB)
Title: Apparatus and method of inserting an initially cylindrical diaphragm into an unvulcanized tire of toroidal shape
IPC: B29D30/06
Filed: 1958-09-23
Abstract: 850,505. Tyre vulcanizing presses. FIRESTONE TIRE & RUBBER CO. Sept. 23, 1958 [Feb. 13, 1958], No. 30325/58. Class 87(2). A diaphragm tyre press is adapted for use with a tyre in toroidal form, e.g., when repairing a tyre or vulcanizing a tyre having inextensible tread ply constructions built up in toroidal form, by providing a temporary support 25 for the diaphragm 15, so that when fluid is supplied through a pipe 19 it will bulge outwardly only at that part which is between the tyre beads. The upper plate 17 is then pulled downwardly to force the whole of the diaphragm into the tyre. By this time, the diaphragm is free of the support, which is removed from the press. The mould halves 10, 12 are then closed and the tyre vulcanized. The inside of the support may be lubricated with a silicone compound. The fluid may be introduced intermittently in spurts.
Patent GB-341002-A (GB)
Title: Improvements relating to shock absorbers for vehicles
IPC: F16F9/14
Filed: 1929-10-07
Abstract: 341,002. Shock-absorbers. LUVAX, Ltd. and PITT, H. W., Larden Road, Acton, London. Oct. 7, 1929, No. 30332. [Class 108 (iii).] In a fluid-friction vibration-damper in which a vane oscillates or a piston reciprocates in a cylinder, a valve adapted to restrict the flow of fluid in either direction is so arranged as to have a certain amount of free movement before it engages either of two opposed seats. In the application to an oscillating damper shown in Fig. 1 the vane a oscillates in the chamber b and flow of fluid in either direction is restricted by a ball valve h which may engage either of two seats g in the fixed partition, according to the direction of movement of the vane. The ball rests at the bottom of the V-shaped passage f except when moved by the flow of fluid. An independent throttling passage may be provided in the partition. In modifications the ball valve may move in curved passages arranged internally or externally of the cylinder. Specification 242,998, [Class 108 (iii), Springs &c.], is referred to.
Patent GB-462162-A (GB)
Title: Improvements in or relating to sprocket rollers for driving and/or guiding kinematograph or sound record films
IPC: G03B1/24
Filed: 1936-11-07
Abstract: 462,162. Kinematograph apparatus. ZEISS IKON AKT.-GES. Nov. 7, 1936, No. 30415. Convention date, Dec. 17, 1935. [Class 97 (i)] Film sprockets have teeth of unsymmetrical profile ; the teeth may be such that the sides thereof driving the film rise from a base circle larger than that from which the sides of the teeth rise which are driven by the film. The Figure shows a sprocket over which the film passes to and from a sound drum, the tensioning being such that the portion 9 of the film drives the sprocket, and the portion 10 is driven by the sprocket. The teeth have stepped portions 8 so that the driving sides 7 rise from a larger base circle than the sides 6. The teeth may be formed by milling a roller of larger diameter, or may be separately formed and inserted in position.