baber/WOPTO huggingface dataset:
Patent GB-628732-A (GB)
Title: Improvements in or relating to firearms
IPC: F41C23/04
Filed: 1947-10-11
Abstract: 628,732. Stays for hinged articles. BIRMING- HAM SMALL ARMS CO., Ltd., PERRY, C. A., and WACKROW, R. D. Oct. 11, 1947, No. 27344. [Class 65 (i)] [Also in Group XXI] The folding butt 1 of a firearm is held in the operative position by a pair of stays 13 having sliding connections in slots 11 of a pivoted bracket 5 to which the butt is connected. The bracket consists of limbs 9 and a cross-tube 15, and in the tube is a spring 21 which acts upon a pair of plungers 19. When the butt is moved to its operative position projections 33 on these plungers are forced by the spring 21 into recesses formed in bosses 27 at the ends of the stays 13. Release is effected by inward pressure applied to press buttons 37 mounted in the bosses and formed with heads 39 which transmit the inward pressure to the projections 33. Specification 601,517, [Group XXI], is referred to.
Patent GB-1438607-A (GB)
Title: Apparatus for sijultaneously typing a printing master and a data carrier
IPC: G06K1/12
Filed: 1974-06-20
Abstract: 1438607 Typewriters G RITZERFELD 20 June 1974 [3 July 1973] 27374/74 Heading B6F A typewriter 1 preparing a hectographic master sheet is coupled to a typewriter 2 preparing a coded data carrier, typewriter 2 printing binary codes representative of digits printed by typewriter 1. The type bars of code typewriter 2 are formed with an arcuate surface (Fig. 3, not shown) so that the parts normally used for upper and lower case characters can be used simultaneously to print a code consisting of bars aligned vertically (Fig. 2, not shown). The code typewriter 2 is controlled so as to double space both in the letter spacing and line spacing directions. A key 6 on the master typewriter 1 disconnects the typewriters.
Patent GB-665066-A (GB)
Title: Improvements relating to radioactive gaseous mixtures
IPC: G21G4/02
Filed: 1949-10-26
Abstract: A gaseous mixture exhibiting radio-active characteristics and useful for detecting leaks in high-voltage electric cables is prepared by introducing a small quantity of a radio-active volatile liquid, e.g. ethyl bromide, into a closed vessel at a pressure, e.g. reduced pressure, such that it vaporizes and then filling the vessel with an inert gas, e.g. nitrogen, under pressure.  Radio-active ethyl bromide is preferably prepared from a solid bromide, e.g. ammonium bromide, which has previously been activated in an atomic pile.
Patent GB-473731-A (GB)
IPC: B28B11/08
Filed: 1936-10-10
Abstract: 473,731. Making rollers. HASLER, H. S. Oct. 10, 1936, No. 27515. [Class 83 (ii)] [Also in Group V] A roller 29 for use in the production of rustic bricks from clay, is made by casting aluminium around a core 28 secured to steel flanges 25 having axles 13 mounted in temporary bearings 26, and hammering the surfaces of the aluminium with a pick 31 of polygonal section, a blow lamp 30 being employed to obtain local heating.
Patent GB-654205-A (GB)
Title: Improvements in or relating to flameproof electric lighting fittings
IPC: F21V25/12
Filed: 1948-10-22
Abstract: 654,205. Flame-proof electric lamps. GENERAL ELECTRIC CO., Ltd., and HUBBOLD, S. Oct. 22, 1948, No. 27551. [Class 75(iv)] A flame-proof electric light fitting comprises a flat or substantially flat plate 30, Fig. 2, of glass forming one wall of a flameproof enclosure 7 for a lamp 10, and over which is disposed a domed or outwardly dished diffusing translucent cover 32. The latter may be of plastic material, e.g. that known under the Registered Trade Mark " Perspex." The plate 30 of clear armour plate glass is cemented in an aluminium ring 27 clamped by screws 127 to a flange 24 around the mouth of the recess 7. The flange 33 of the cover 32 is clamped by screws 32 (not shown), between a ring 36 and a felt gasket 35 held by a flanged ring 34 clamped to the ring 27. A steel projecting grid 38 is welded to the ring 36. An alternative embodiment is described in which the plate 30 and the cover 32 are substantially rectangular and the latter is clamped by nuts at its four corners without the use of the clamping ring and associated grid 38.
Patent GB-173083-A (GB)
Title: Improvements in or relating to perambulators and like push vehicles
IPC: B62B9/18
Filed: 1920-09-28
Abstract: 173,083. Scrutton, H. E. Sept. 28, 1920. Frame construction; springs, arrangement of; suspending bodies; push-bars. -Relates to perambulators &c. having an underframe consisting of a central longitudinal member a carrying axles c and formed with upwardly turned ends a<1>, a<2> to which are secured transverse members f from which the body i is suspended, one or both ends a<1>, a<2> being in addition provided with an independent handle. According to the invention, the body is suspended by short springs, straps, &c. directly connected to the body and to the ends of the transverse members f. As shown, the members f, which may be formed of resilient strips, are curved inwardly and upwardly at their ends f<1>, f<2> which are slotted to receive straps g connected to pins h on the body i. The handle m, preferably T-shaped, is adjustably secured in the end a<3> of the member a by means of a clip n, and is prevented from turning by the engagement of a pin on the part a<3> with a slot in the stem 'of the handle. The underframe is strengthened by trusses r, s. In a modification, the transverse members aretubular and are connected to the body by coil springs, which may be encased in a rubber or other sheath. Transverse rods passing through the body may be substituted for the pins h.
Patent GB-172770-A (GB)
Title: Improved advertising device
IPC: G09F19/10
Filed: 1920-09-28
Abstract: 172,770. Kunstdruck-und Verlagsanstalt Wezel & Naumann Akt.-Ges., and Schroeder, K. Sept. 28, 1920. Moving and changing apparatus. - An advertising device comprises a picture 1 behind which is located a receptacle 3 to contain sand which trickles through a nozzle 5 and over a ledge 6 to fall, in a manner simulating flowing water, into a basin 2 and thence into a receptacle 8. The nozzle 5 may consist of sheet metal 4 provided with backwardly-bent tongues.
Patent GB-1509581-A (GB)
Title: Method of eliminating radioactivity from air containing radioactive rare gases
IPC: F25J3/02
Filed: 1975-06-30
Abstract: 1509581 Separating rare gases COMMISSARIAT A L'ENERGIE ATOMIQUE 30 June 1975 [31 July 1974 17 April 1975] 27601/75 Heading F4P To separate radio-active rare gases, e.g. krypton and xenon from a mixture in air, the mixture is distilled to produce a mixture of the rare gases in solution in liquid oxygen. The rare gases are freed from oxygen by adding hydrogen and catalytically reacting the mixture to form water which is condensed and removed, the xenon and krypton then being separated by fractionation. In detail, the solution of rare gases is heated at E1, Fig. 2a (not shown) to 500 C. after removal of CO 2 , NO and NO 2  by scrubbing, and passed to catalytic reactor A1 to convert any hydrocarbons to H 2 O and CO 2  and N 2 O to N 2  and O 2 . The mixture is cooled, compressed, water is extracted, the mixture being further cooled and introduced to distillation column K1, Fig. 2b (not shown), to remove some O 2  and any N 2 . The resultant mixture may be passed through an ozone trap, and then mixed with a stream of hydrogen and introduced to a catalytic combustion chamber A 2 , Fig. 2c (not shown). The mixture is freed of water by cooling, then the krypton and xenon are preferably freed of hydrogen by freezing in alternating freezers F 2 , F 3 . The krypton and xenon is recovered from the freezers by warming, and fed to a column K 2  in which the krypton and xenon are separated.
Patent GB-363992-A (GB)
Title: Improvements in rubber printing plates
IPC: B41N1/12
Filed: 1930-09-16
Abstract: 363,992. Printing surfaces. PARAMAT, Ltd., Sessions House, Farring- don Road, London, and GRAHAM, J., 24, Woodend, Sutton, Surrey. Sept. 16, 1930, No. 27681. [Class 100 (ii).] A rubber relief printing-plate is provided with an embedded reinforcement, preferably of metal, for the purpose of reducing or preventing shrinkage during manufacture. The reinforcement may be of perforated, roughened, or corrugated sheet metal such as zinc, and may be either embedded centrally of the thickness, or embedded on the back of the rubber. Specifications 295,927 and 322,926, [both in Class 100 (ii), Printing processes &c.], are referred to.
Patent GB-714177-A (GB)
Title: Drums for carrying coiled metal strips in strip-rolling operations
Inventor: MARTIN NATHANIEL
IPC: B21C47/30
Filed: 1951-11-27
Abstract: 714,177. Winding and reeling. THOMAS & BALDWINS, Ltd., R. Nov. 18, 1952 [Nov. 27, 1951], No. 27759/51. Class 83 (4). In a collapsible winding drum comprising a main section a to which are pivoted sub-sections d with overlapping free edges the inner of which is acted upon by a cam b, the cam has, opposite the nose portion h, a cylindrical surface which bears either on a cylindrical inner surface formed on the main section a or on a liner z<SP>1</SP> secured to the inner surface.
Patent GB-893327-A (GB)
Title: Process for the production of diketones
Inventor: MIKUSCH-BUCHBERG JOHANNES DONA
IPC: C07C49/203
Filed: 1957-08-30
Abstract: Beta-diketones of the formula RCH2.CO.CHR.1COCH2R2, where R, R1 and R2 are acyclic hydrocarbon radicals containing 1-21 carbon atoms are prepared by condensing acids of formula RCH2COOH or their anhydrides at 150 DEG C.-220 DEG C. in the presence of oxygen-containing boron compounds of an acidic nature (i.e. which can form esters or anhydrides by reaction with OH or COOH groups), or oxygen-containing boron compounds which form compounds of an acidic nature during the reaction; removing any water formed, treating the reaction mixture with a hydrolysing agent and separating the beta-diketones.  Part of the acid or anhydride may be replaced by a monoketone of formula RCH2COCH2R1.  Specified boron compounds are boric oxide, boric acid and its salts with weak or volatile bases, such as zinc borate and ammonium pentaborate; boric acid esters and mixed anhydrides of boric and organic acids, such as trimethyl and triethyl borate, boric acid mannitol ester and the mixed anhydride of boric and acetic or higher fatty acids.  Borax and perborates are said to be less suitable. Specified carboxylic acids, which may be used as such or as anhydrides, are propionic, butyric, valeric, caproic, oenanthic, caprylic, capric, lauric, myristic, palmitic, stearic, pivalic, isocaproic, 4-hexenoic, oleic, linoleic and erucic acids; mixtures of acids, such as those derived from soyabean oil, cottonseed oil, groundnut oil, rapeseed oil and tall oil may be used, or their anhydrides.  The process may be carried out under reduced pressure or at atmospheric pressure in a current of inert gas.  The preferred hydrolysing agent is hot water.  Examples use as starting material: (1) caproic anhydride, (2) propionic anhydride, (3) caprylic anhydride, (4) oleic acid, (5) stearic anhydride, and (6) linoleic anhydride, to obtain the corresponding beta-diketones.  In additional examples in the Provisional Specification, (2) a mixture of undecan-6-one and caproic anhydride, (4) caprylic acid, (5) stearic acid, and (6) a mixture of acids comprising 60% caprylic, 35% caproic and 5% lauric acid, are reacted.
Patent GB-344530-A (GB)
Title: Improvements relating to the repair of punctures in pneumatic tubes
IPC: C09K3/10
Filed: 1929-09-12
Abstract: A composition to be inserted in tyre tubes for filling punctures comprises a preponderating proportion of mica, part of which is finely ground, and part is split flakes.  A quantity of common salt is also present.  A suitable mixture consists of 30 parts by volume of ground mica, 30 parts of split mica, 19 parts of cork granules, 19 parts of common salt, 1 part of calcium carbonate, and 1 part of gum tragacanth, with sufficient water to make the composition flow.
Patent GB-1306859-A (GB)
Title: Communication receivers
IPC: H03H7/01
Filed: 1970-06-05
Abstract: 1306859 Radio receiving circuits; interference suppression LICENTIA PATENT-VERWALTUNGS-GmbH 5 June 1970 [20 June 1969] 27157/70 Headings H3Q and H4L  A communication receiver includes in its signal path a comb filter operative for selecting signals at required transmitter frequencies. In an embodiment, the aerial 1, Fig. 1, is coupled to the receiver 6 via a bandpass filter 2 covering the whole of the band to be received, followed by a comb filter 4: the frequency spacing between a suppression point and a pass-band centre point of the comb filter is made equal to the frequency spacing of stations in the band, so that alternate stations are rejected. The comb filter may comprise a delay line in the signal path to whose output is added a signal direct from the input (Figs. 2(a), 2(b), not shown) or the signal may be subtracted (Figs. 3(a), 3(b), not shown). In a further embodiment the output of delay line 8, Fig. 4, is fed to an adder 9 and to a subtraction circuit 14, to both of which signal is also applied directly and a switch 17 enables alternative sets of stations to be selected. The comb filter, which may employ a mechanical resonator, may alternatively be placed in an I.F. circuit, and the receiver may comprise a double superheterodyne.
Patent GB-1153462-A (GB)
Title: Improvements in or relating to Semiconductor Devices.
Inventor: KLEIN THOMAS
IPC: H01L21/74
Filed: 1965-06-22
Abstract: 1,153,462. Semi-conductor devices. MULLARD Ltd. 22 June, 1966 [22 June, 1965; 26 June, 1966], Nos. 26340/65 and 27846/66. Heading H1K. In a semi-conductor device having a conductive track overlying an insulating layer, an unwanted channel formed beneath the conductor is interrupted by increasing the conductivity of part of the underlying region. In a first embodiment, Figs. 1 to 3 (not shown), an IGFET is produced by masking an N-type silicon wafer with silicon oxide or silicon nitride, using a photolithographic technique and diffusing-in boron to form interdigitated P-type source and drain regions (4, 5) and to form a separate P-type region (3) which provides a protective diode. The wafer is remasked and phosphorus is diffused-in to form a region (6) more heavily doped than the remainder of the substrate. The masking material is removed and replaced with clean silicon oxide, apertures are formed to expose parts of the source and drain regions (4, 5) and part of the diode region (3), and a layer of aluminium is vapour deposited on the surface and etched to form source and drain contacts (8, 9) and a gate conductor (7) which overlies the interdigitated parts of the source and drain regions and contacts the diode region (3). The diode is arranged so that it conducts before sufficient voltage is applied to the gate conductor to break down the insulation. The more heavily doped region (6) of the substrate underlies part of the gate conductor between the source region (5) and the diode region (3) to interrupt the unwanted channel which is formed in use between these regions. In a second embodiment, Figs. 4 to 6 (not shown), a pair of NPN junction transistors is formed in an N-type wafer (40) which forms a common collector region, by diffusing-in separate base and emitter regions (35, 36; 37, 38). A more heavily doped N-type region (50) is diffused into the substrate between the base regions (35, 36) simultaneously with the emitter diffusion, and conductive tracks are provided over an insulating layer to connect the transistors in the form of a " Darlington pair." The connection (48) between the emitter region (37) of the first transistor and the base region (36) of the second transistor passes over the more heavily doped region (50) of the substrate which interrupts the channel formed under this conductor in operation which would otherwise form a leakage path between the base regions of the transistors. In a third embodiment, Figs. 7 to 9 (not shown), a pair of complementary insulated gate FET's produced as described in Specification 1,153,463 have their gate conductors extended to a common connecting point. The extended part of one of the gate conductors crosses a more highly doped region of the substrate which interrupts the channel which forms beneath the extended parts of the gate conductors.
Patent GB-363634-A (GB)
Title: Golf clubs
IPC: A63B53/02
Filed: 1930-09-18
Abstract: 363,634. Golf clubs. WILSONWESTERN SPORTING GOODS CO., 2637, Powell Avenue, Chicago, U.S.A.-(Assignees of Jansky, C. G. ; 2230, Grove Avenue, Berwyn, Illinois, U.S.A.) Sept. 18, 1930, No. 27877. Convention date, Sept. 19, 1929. [Class 132 (ii).] The head of a golf club is directly and rigidly connected to the shaft in a manner which prevents twisting between the head and the shaft and the head socket has parts spaced from the shaft to allow the latter to bend within the socket. The shaft is driven into the lower end of the clubhead socket and is secured by a rivet 24. The space between the upper end of the socket and the shaft is filled by a rubber bush 26 held in place by a ferrule 29. The junction between the lower end of the ferrule and the top of the socket may be of the ball-and-socket type to assist the relative movement between the head and the shaft. The head is provided with a sighting mark 17. In a modification, Fig. 5, the rivet connecting the head of the club to the shaft acts also as a pivot pin, the bush having an enlargement 25 to permit relative movement between shaft and head. The ferrule 39 is formed of some initially plastic material, e.g., that known by the registered Trade Mark " Pyralin," and the rubber cushioning 26 extends between the ferrule and the socket. In another modification the rubber member has a recess into which fits a reduced part on the socket.
Patent GB-334391-A (GB)
Title: Improvements in or relating to diaphragms for transmitting fluid pressure
IPC: F16J3/02
Filed: 1929-09-16
Abstract: 334,391. Ruthsaccumulator Aktiebolaget. Nov. 29, 1928, [Convention date]. Flexible-diaphragm engines. - In order to avoid the danger of breakage, the clamped edge of a diaphragm a for transmitting gas or liquid pressure forms part of a spherical surface. A bent margin e is preferably provided. The Specification as open to inspection under Sect. 91 (3) (a) comprises also forms in which the clamped edge forms part of a conical or cylindrical surface. This subject-matter does not appear in the Specification as accepted.
Patent GB-603612-A (GB)
Title: Improvements in or relating to ironing boards for domestic use
IPC: E06C1/00
Filed: 1945-10-25
Abstract: 603,612. Ironing-boards. BISHOP, W. H. Oct. 25, 1945, No. 28243. [Class 138(ii)] The flat sheet-metal top b of an ironing- board is supported by a pair of sheet-metal pressings e, f secured to a base g, which is provided with depending flanges for engagement with the side edges of the top step or platform of a step-ladder and with releasable means for clamping the base in position thereon. The pressings e, f, which are oppositely-inclined, are welded at their upper ends to the underside of the top b and at their lower ends to the opposite sides of the base g, which is of shallow invertedbox form. A lip h is provided on one end flange of the base g for engaging under one edge of the platform of the step-ladder, and, near the opposite end of the base. there is mounted on each side a pivoted wire clip j, which can be snapped under the side edges of the platform. The top b of the board may be made of sheet-steel. and around its top edge is welded a flanged steel strip c having its depending flange d rolled over inwardly. A layer of felt or similar material is provided in the upper surface of the top b, which, like the members e, f, g, is perforated. The step-ladder may be constructed as described in Specification 576,694, [Group X]. According to the Provisional Specification, one of the spaced brackets on the underside of the ironing- board is provided with a flange for engaging one edge of the platform of the stepladder, and the other bracket is fitted with one or more clamps for engaging the other edge of the platform; alternatively, both brackets may be fitted with clamps.
Patent GB-378256-A (GB)
Title: Improvements in or relating to thermionic amplifiers
IPC: H03J3/00
Filed: 1931-10-12
Abstract: 378,256. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.- (Assignees of Roberts, W. van B. ; 155, Hodge Road, Princeton, New Jersey, U.S.A.) Oct. 12, 1931, No. 28333. Convention date, Oct. 11, 1930. [Class 40 (v).] In order to obtain uniform amplification throughout a desired frequency range, the input impedance of a thermionic amplifier is caused to vary inherently and automatically with frequency in such a manner that the input circuit becomes resonant to whatever frequency is applied thereto over a wide range of frequencies. The Figure shows the first stage of an untuned radio frequency amplifier having a band-pass input 2, 3, 5, 6, with unicontrol condensers. An auxiliary valve 8 is connected across the secondary 4 of the radio frequency transformer in parallel with the amplifier 9, the grid-filament capacity C, anode-grid capacity K and anode impedance Z (which is preferably a variable resistance simultaneously varied with the condensers 5, 6) being so chosen that the total circuit capacity varies with the impressed frequency to make the amplifier circuit automatically resonant to any frequency within a wide range, such as the broadcast range. The coil 4 may be replaced by a network whose impedance is equal to the input impedance of valve 8, the respective voltages being 180‹ out of phase ; the impedance Z may also be an impedance network of fixed constants. In a modification, Fig. 3 (not shown), the auxiliary valve is dispensed with, the impedance Z being inserted in the screen grid circuit of the amplifier 9.
Patent GB-1242531-A (GB)
Title: Improvements in or relating to differential gear assemblies
Inventor: SUTHERLAND NORMAN DONALD
IPC: F16H57/022
Filed: 1967-06-20
Abstract: 1,242,531. Differential gearing. SMITHS INDUSTRIES Ltd. 13 Sept., 1968 [20 June, 1967], No. 28510/67. Headings F2D and F2Q. In a differential g ar assembly in which a pair of pinions 11, 12, Fig. 1, each engage both of a pair of gear-wheels 1, 2 spaced apart on a common axis, each pinion is rotatably mounted on an individual one of two members 23, 24 which rotate together about the common axis with the rotational axes of the pinions extending radially, the members being angularly displaceable relative to one another about the common axis to urge the pinion teeth against the gear-wheel teeth. A screw 32 in member 24 is rotated into engagement with a tongue (27), Fig. 2 (not shown), integral with the other member 23 to effect the angular displacement. The displacement effectively reduces the clearance between shafts 15, 16 and their bearings, the clearance between the gear and pinion teeth and the clearance between shaft 3 and its journal bearings. The differential has rotary inputs through anti-backlash gears 21, 22 and an output through an anti-backlash gear 8.
Patent GB-1401396-A (GB)
Title: Thermostat assembly
IPC: G05D23/02
Filed: 1973-06-15
Abstract: 1401396 Valves BRITISH LEYLAND UK Ltd 9 April 1974 [15 June 1973] 28510/73 Heading F2V In a thermostat for an engine cooling system a valve member 3 attached to a wax capsule element 1 co-operates with a seating formed directly on a coolant outlet member 5 bolted to the engine cylinder head. The capsule slides in an annular reaction member 6 secured by two arms (7), Fig. 1 (not shown), and a helical spring 9 urges the valve member towards the seating. The actuator rod 2 of the capsule locates in a socket 11 formed in the inner surface of the outlet member 5. An air bleed passage 12, in parallel with the valve, is controlled by a nylon valve member 13.