baber/WOPTO huggingface dataset:
Patent GB-331540-A (GB)
Title: Improvements in the manufacture and production of electrodes for secondary cells, in particular for those which have alkaline electrolytes
IPC: H01M4/28
Filed: 1929-01-04
Abstract: 331,540. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Jan. 4, 1929. Electrodes; connections. - Electrodes for storage batteries consist of supports of porous iron, nickel cobalt, cadmium or ferroso-ferric oxide, the pores of which are filled with active material. The supports may be prepared by the process described in Specification 311.141 in which the metal or metal oxide powders are subjected to pressure and heat while being moulded. The powders are prepa.red by heating metal carbonyls. Plates of ferroso-ferric oxide may be prepared as described in Specification 324,028. The active material may be introduced into the porous metal support by impregnating the latter with solutions of metal salts or compounds such as nitrates and heating. Hydroxides may be introduced by precipitation by means of alkaline solutions or by the alkaline electrolyte itself. By-products may be washed out or removed by electrochemical methods. Nickel or nickel oxides may be introduced into the pores of ferroso-ferric oxide plates by incorporating the former into the latter during manufacture of the plates. In order to prevent the supports from being attacked by the electrolyte the walls of the pores of the supports may be coated with a layer of resistant metal such as nickel or cobalt before the introduction of. the active material. This may be done electrolytically or by impregnating the supports with a solution of a salt of the metal and heating. Connection to the supports may be made by means of wires, bands or rods of iron or nickel welded to the supports by sintering, or grooved frames pressed on to the supports may be used for making connection. Alternatively terminals may be used consisting of the same material as the supports in a more highly sintered and compact form.
Patent GB-364336-A (GB)
Title: Improvements in fairings for streamlining struts of aircraft, and a method of manufacturing such fairings
IPC: B64C3/18
Filed: 1931-01-05
Abstract: 364,336. Fairings for aircraft struts. SHORT, A. E. and SHORT, H. 0., Seaplane Works, Rochester, Kent. Jan. 5, 1931, No. 356. [Class 4.] A streamlined fairing for an aircraft strut comprises a strip of metal a formed with inwardly - turned partial beads at its edges clamped together by a split tube c slid longitudinally into position after which the ends of the fairing are cut at an angle at the front and rear and bent over as shown in Fig. 6 to form an opening a<8> for the strut. The fairing is secured to the strut by bolts passing through holes a<9> and through the strut. When the strut has end-pieces secured by hollow rivets the bolts pass through these rivets. The fairing is formed from sheet aluminium or the alloy known under the Trade Mark " Duralumin."
Patent GB-790621-A (GB)
Title: Improvements in and relating to the production of ceramic bodies
Inventor: HIMSWORTH FRANCIS ROBERT
IPC: C22C32/00
Filed: 1954-01-06
Abstract: Articles, e.g. tubes, are made by casting a slip of refractory oxides and refractory metals or metalloids (the latter not exceeding 50 per cent by weight of the mixture) in an absorbent mould and firing the resultant cast to not less than 1000 DEG C.  The oxides may be alumina, chromia, zirconia and magnesia and the metals may be chromium, nickel, iron, titanium, austenitic alloy steels, niobium and molybdenum.  In an example, a mixture of chromium and pure calcined alumina, in the proportions of 30 per cent and 70 per cent by weight respectively, was ground dry and suspended in a mixture of 18 per cent by weight of butanol using 0.3 per cent by weight of triethanolamine as deflocculant.  The slip so obtained was cast in a plaster of Paris mould to form a tube of wall thickness 1/8 inch. The cast was then removed from the mould, dried at a temperature of 150 DEG C. and placed in a furnace which was purged first with nitrogen and then with hydrogen to remove moisture.  The tube was then sintered at 1700 DEG C. in a hydrogen atmosphere.  In another example, the suspension medium for the slip was a sodium alginate solution.ALSO:Articles, e.g., tubes, are made by casting a slip of refractory oxides and refractory metals or metalloids (the latter not exceeding 50 per cent by weight of the mixture), in an absorbent mould and firing the resultant cast to not less than 1000 DEG C.  The oxides may be alumina, chromia, zirconia and magnesia and the metals may be chromium, nickel, iron, titanium, austenitic alloy steels, niobium and molybdenum.  In an example, a mixture of chromium and pure calcined alumina, in the proportions of 30 per cent and 70 per cent by weight respectively, was ground dry and suspended in a mixture of 18 per cent by weight of butanol using 0.3 per cent by weight of triethanolamine as deflocculant.  The slip so obtained was cast in a plaster of paris mould to form a tube of wall thickness 1/8 inch.  The cast was then removed from the mould, dried at a temperature of 150 DEG C. and placed in a furnace which was purged first with nitrogen and then with hydrogen to remove moisture.  The tube was then sintered at 1700 DEG C. in a hydrogen atmosphere.  In another example, the suspension medium for the slip was a sodium alginate solution.
Patent GB-1222881-A (GB)
Title: Process for the preparation of carbon fibers
IPC: D01F9/21
Filed: 1968-01-03
Abstract: 1,222,881. Carbon fibres. NIPPON CARBON CO. Ltd. 3 Jan., 1968 [6 Jan., 1967; 9 Jan., 1967; 20 Feb., 1967], No. 365/68. Heading C1A. Carbon fibres are produced by carbonizing carbon containing fibrous materials by heating at between 100 C. and 1500 C. in an atmosphere containing between 10% and 100% by volume of hydrogen chloride gas, the heating being finished at between 150 and 1500 C. The fibre produced may be graphitized at a temperature of up to 3000 C. in an inert atmosphere. The temperature during the carbonization step is increased by between 5 and 500 C. per hour to final temperature of between 150 to 1500 C. Tension may be applied to the fibre during heating in order to improve its elastic properties. Reference has been directed by the Comptroller to Specification 1,093,084.
Patent GB-1350013-A (GB)
Title: Automatic focussing apparatus for use in oculometers
IPC: G02B27/40
Filed: 1972-01-05
Abstract: 1350013 Automatic focusing HONEYWELL Inc 5 Jan 1972 [11 Jan 1971] 392/72 Heading H4D Although applicable to automatic focusing in general, the Specification deals specifically with the application to the optical system as described in Specification 1,175,945 for determining the orientation of a person's eyeball. The light beam 25, Fig. 1, to be focused-e.g. that reflected from the eyeball-is passed through focusing lens 40 and beam shaping aperture 36 to the detector, image dissector 50. The aperture 36 has a shape Fig. 2 such that its out of focus image (B) on the dissector screen 48 when the screen is too near, is readily distinguished from that (C) when the screen is too far. The image is scanned in the image dissector along circular paths of such diameters as to alternately scan through and clear of the lobes a, thereby giving rise to a video signal component at the 3rd harmonic of the scanning frequency of one phase (in phase) for condition B and of the opposite phase (antiphase) for condition C, and disappearing for the in focus condition A. A phase detector 130, Fig. 3, receiving the frequency tripled output of scan generator 110 and the video signal, gives the out of focus signal in sign and magnitude, which after integration at 150, serves to energize motor 80 such that lens 40 is moved and the infocus condition is achieved. To ensure that the circular scan always passes through the lobe region of the image, i.e. always gives a video signal with an A.C. content, alternate (odd) scans are made at a very small radius such that a constant level reference video signal is produced with no A.C. content, the radius of the larger (even) scans being automatically controlled so that the average (D.C. component) level of the video signal is always 50% of the reference level.
Patent GB-863061-A (GB)
Title: Improvements in or relating to waveguide mode transducers
Inventor: EAGLESFIELD CHARLES CECIL
IPC: H01P1/16
Filed: 1960-01-06
Abstract: 863,061. Waveguide mode transformers. STANDARD TELEPHONES & CABLES Ltd. Jan. 6, 1960, No. 426/60. Class 40(8) A transducer for insertion between rectangular waveguides operating in different H modes comprises a section of rectangular waveguide divided longitudinally into two or three communicating parts, one or two of these parts being tapered to zero height. The transducer of Fig. 3 transforms between a H 30  mode guide connected to its broad (near) end and a H 10  mode guide connected to its narrow (far) end. The three parts 11, 12, 13 are of equal width, the outer parts 11, 12 being tapered to zero height over an extent of two wavelengths at the lowest operating frequency. There are no dividing walls between the parts. The taper need not be linear and the central portion 13 need not be of constant height throughout its length. Fig. 2D is a cross-section of a transducer having two longitudinal parts one of which is tapered, this construction being effective for transformation between the H 10  and H 20  modes. By making the tapered part twice as wide as the other part, this construction can be used as a H 10 #H 30  transformer. In general, for a H mo #H no  transformer the width of the tapered part is made (n - m)/m times the width of the untapered part.
Patent GB-1096272-A (GB)
Title: Improved magnetic tape recording apparatus
Inventor: BOYLE ARCHIBALD RAYMOND
IPC: G01D1/00
Filed: 1964-01-04
Abstract: 1,096,272. Magnetic tape recording apparatus. D-MAC Ltd. Dec. 29, 1964 [Jan. 4, 1964], No. 462/64. Heading G5R. Signals are recorded periodically in digital form on a magnetic tape under the control of a clock. The clock 11 is continuously energised from a power supply 10 and periodically, e.g. every 15 minutes, completes a pair of contacts energizing a relay. In response to the relay the drive to the tap recorder 13 is energized and power is supplied to a timer 14 which produces pulses every <SP>1</SP>/ 10  second. To allow the tape time to run up to speed, the second of these pulses is used to switch on a voltage-frequency converter 15 which is supplied with an input voltage at terminal 16; the third pulse switches off the converter 15 and the power supply to units 13 and 14, so that the number of pulses from converter 15 which are recorded on the tape is proportional to the input signal at terminal 16. If desired a fixed number of pulses may be added to the output of converter 15 so that a zero input will still produce an output. If the signal to be recorded is initially in digital form it is converted to an analogue signal before being supplied to terminal 16. The recorder may include a second track which may be used to record a second input or to record marks, e.g. to indicate every 12 hours.
Patent GB-1021781-A (GB)
Title: Improvements in and relating to spark erosion apparatus
IPC: B23H7/32
Filed: 1964-01-06
Abstract: 1,021,781. Spark erosion. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Jan. 6, 1964 [Jan. 9, 1963], No. 524/64. Heading B3V. [Also in Division G3] In spark erosion apparatus, the fine control of the relative distance between a workpiece and a work electrode is automatically effected by a mechanical linkage which utilizes the thermal expansion of a metal wire carrying a current dependent upon the mean current or voltage across the spark gap. As shown, spark erosion apparatus comprises a stationary column 5; an electrode holder 7 for a work electrode 6 which co-operates with a workpiece 1 arranged in a vessel 3; a sledge 4 which carries the vessel 3 and which is movable along the column 5 for the coarse adjustment of the distance between electrode 6 and workpiece 1; a lever 8 bearing on the electrode holder 7 at position 32 and secured to the top of column 5 by a leaf spring 9; and a metal wire 25 connecting the bottom of column 5 at position 30 with the lever 8 at position 31 where the wire is insulated from the lever by a sleeve 42. The wire 25 carries a current which is dependent upon the mean voltage or mean current across the gap between workpiece 1 and work electrode 6, and which is derived from the circuitry shown. The arrangement is such that an increase in gap size causes an increase in current through the wire 25 which thus expands so that point 32 moves downwardly to reduce the gap size; conversely, the gap size is increased when the wire 25 contracts. The distance between the work electrode and the workpiece is thus maintained at a desired value. An oscillatory motion of small amplitude is superimposed on the movement of the work electrode 6 by means of the energization of the coil 22, surrounding the electrode holder 7, from an oscillator 21.
Patent GB-426937-A (GB)
Title: Improvements relating to battery sockets
IPC: H01R11/28
Filed: 1935-01-07
Abstract: 426,937. Connections between conductors. KLEINMANN, E., 7, Kufsteinerstrasse, Sch÷neberg, and MENDEL, A., 59, Leibnizstrasse, Charlottenburg, both in Berlin. Jan. 7, 1935, No. 528. [Class 38 (i)] Prior to soldering, sockets are clipped in position on the battery container by means of the flat lugs 2, 3 and in order that thinner material may be used and yet the clipping-on be effective, the lower part of the peripheral wall of the socket is slotted, as shown, so as to receive the container wall 8 and thus assist in holding the socket in place.
Patent GB-251676-A (GB)
Title: Improvements in or relating to the means utilized for securing electric conductors to or in relation to contact members or apparatus to which it is desired to supply electric current
IPC: H01R13/595
Filed: 1925-01-08
Abstract: 251,676. Crabtree, J. A. Jan. 8, 1925. Couplings; sheathing or covering, connection of. - Electric couplings of the type in which flexible heads are retained bv a pair of gripping elements which have movement in a direction transverse to the leads, a third element is provided which is subjected to compression between the leads and one of the gripping members. This element may be rigid, flexible, reversible or interchangeable with others. Figs. 8 and 9 show the reversible third member e<3> in each its two positions, clamping two leads between the gripping members a, b in one case and clamping a single compound lead in the other. A further resilient strip g may be added, Fig. 10, if desired. The third member may take a variety of shapes suitable for gripping the particular type of lead used. In Fig. 19, a rotatable cam-shaped piece j, and a block i, are used, to grip leads of various diameters. Specification 234,925 is referred to.
Patent GB-391259-A (GB)
Title: Manufacture of vat-dyestuffs
IPC: C09B57/12
Filed: 1932-01-08
Abstract: The vat-dyes described in the parent Specification are obtained by condensing a naphthalene 1 : 4 : 5 : 8-tetracarboxylic diarylimide with an ortho-diamine.  According to examples, naphthalene 1 : 4 : 5 : 8-tetracarboxylic diphenylimide is condensed with o-phenylene diamine, and 4-ethoxy-1 : 2-diaminobenzene.  Substituted diphenylimides and other o-diamines may be employed.  The diarylimides are obtained by treating the naphthalene-tetracarboxylic acid with an aromatic amine in pyridine.
Patent GB-113294-A (GB)
Title: A New and Improved Mounting for Rifles.
Inventor: YOULTEN WILLIAM
IPC: F41A23/00
Filed: 1917-01-13
Abstract: 113,294. Youlten, W. Jan. 13, 1917. Aiming-rests.-Consists of an expansible framework a provided with spikes c to engage the ground and a pivot e for permitting a gun-supporting pillar d to be folded against the framework or raised to the position shown in Fig. 1. The gun is clamped by a hinged plate h and screw k to a fork g pivoted at f to the upper end of the pillar d. A vertical pivot may be provided at the upper or lower end of the pillar d to permit of training the gun.
Patent GB-1246251-A (GB)
Title: Flat-link chain
Inventor: IVASHKOV ILYA ILICH
IPC: F16G13/06
Filed: 1970-01-06
Abstract: 1,246,251. Chains. VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY I PROEKTNOTEKHNOLOGICHESKY INSTITUT UGOLNOGO MASHINOSTROENIA. 6 Jan., 1970, No. 675/70. Heading F2Q. In a chain comprising pairs of flat outer links 1 connected together by cylindrical pins 4, alternating with pairs of flat inner links 2 connected together by pins 3 having concave bearing surfaces to receive the pins 4, which extend through clearance holes in the inner links 2, at each hinge the angle α formed between the planes passing through the axis of the pin 4 and the edges of the concave bearing surface of the pin 3 is not less than 720/n degrees where n is the number of teeth of the smallest sprocket to be engaged by the chain. This is stated to prevent the pins 4 from rolling out of the concave bearing surfaces when the chain engages the smallest sprocket.
Patent GB-1088431-A (GB)
Title: Improvements relating to straight-vision prism systems
IPC: G02B5/04
Filed: 1966-01-06
Abstract: 1,088,431. Prism system. OPTISCHE INDUSTRIE "DE OULDE DELFT", N.V. Jan. 6, 1966 [Jan.29, 1965], No.683/66. Heading G2J. A prism-system for laterally inverting images comprises three prisms, (Fig. 2), arranged so that a light beam entering surface 3 of prism I normally, is totally reflected by a surface 1 thereof on to a surface 5 which reflects the beam out of the prism through surface 1 into a prism III; the beam enters prism m through a surface 7 and is reflected by a surface 9 out of the prism through a surface 8; the light then enters prism II through a surface 2 whence it is reflected in turn by a surface 6 and surface 2 out normally through a surface 4 parallel to the entrance surface 3 of prism I. In embodiments the prisms may have roof edges, and/or the angle # may be altered to 90‹ so that surfaces 5 and 6 are coplanar.
Patent GB-739750-A (GB)
Title: Improvements in or relating to high grade rubber and method of making same
IPC: C08C1/14
Filed: 1954-01-11
Abstract: High-grade rubber is produced from the skin obtained in creaming natural rubber latex by allowing the said skim to coagulate spontaneously finely dividing the resulting coagulum, and treating the finely divided coagulum with an aqueous alkali metal hydroxide solution or ammonium hydroxide solution.  The skim may be clarified by centrifuging or filtering before coagulation occurs.  The coagulum may be finely divided by milling to form a wet crumb, and soaked for 20 hours in a 2.75 per cent aqueous solution of sodium hydroxide. Alternatively, the crumb may be heated at 122 DEG  F. for about four hours in a 2 per cent aqueous solution of sodium hydroxide and then allowed to soak overnight. A rubber having improved ageing properties is obtained by treating the wet coagulum with an aqueous solution of alkaline earth metal hydroxide, e.g. calcium hydroxide, before treating with an alkali metal or ammonium hydroxide solution.  A known anti-oxidant may be incorporated in the rubber so obtained.
Patent GB-213979-A (GB)
Title: Improvements relating to magneto electric machines
IPC: H02K1/27
Filed: 1923-01-10
Abstract: 213,979. M-L. Magneto Syndicate, Ltd., and Watson, E. A. Jan. 10, 1923. Magneto-electric machines. -To prevent demagnetization of the radial permanent magnets a, Figs. 1 and 2, one or more iron guard rings e are provided, the rings being separated from the magnets by air spaces or their magnetic equivalent. As shown in Fig. 2, the space is occupied by brass rings f; in a modification, the rings e abut against the magnets and are chamfered towards their peripheries to form air spaces. The interpolar spaces may be reduced by soft-iron extensions d.
Patent GB-908473-A (GB)
Title: A mounting pillar for rock drills
IPC: E21B19/087
Filed: 1959-01-09
Abstract: 908,473. Percussive tools. ANDERSSEN, E. Jan. 9, 1959 [Jan. 9, 1958], No. 940/59. Class 124. A support for a percussive drill comprises a pillar, the lower section of which is adapted for insertion into a hole and the upper section is provided with a clamping sleeve for receiving a lever which is axially displaceable in the sleeve and is provided with a clamp for securing to a feed cylinder for the drill. As shown, the support comprises a tubular pillar 1 having a solid peg 2 at the lower end and a clamp 3 at the upper end which clamp engages a horizontal arm or lever 4 provided with a clamp 5 which is secured to a feed cylinder 8 associated with a pneumatic drill 6. During drilling the pressure of the feed cylinder tends to bend the pillar 1 and the peg 2, which may be grooved, is tightly engaged in the hole. The pillar may be provided with a compressed air inlet pipe 9 and two outlet pipes 10, 11 supplying the drill and the feed cylinder respectively.
Patent GB-784198-A (GB)
Title: Novel piperidine derivatives and a process for the manufacture thereof
Filed: 1956-01-11
Abstract: The invention comprises piperidine derivatives of the general formula <FORM:0784198/IV (a)/1> (wherein R1 and R2 each represent an alkyl radical of not more than 4 carbon atoms, R3 represents an alkyl, alkenyl, aralkyl, aryl or alkoxyalkyl radical of not more than 7 carbon atoms, and R4 and R5 each represent a hydrogen atom or an alkyl radical of not more than 3 carbon atoms), and the preparation thereof by condensing a compound of the general formula <FORM:0784198/IV (a)/2> with an organo-metal compound R3-Z (wherein Z represents a lithium atom or a halo-magnesium radical) and hydrolytically decomposing the resulting organo-metallo condensation product. When the starting material is one in which R4 is hydrogen, two mols. of organo-metal compound are preferably employed for each mol. of starting material.  The products are useful medicinally on account of their sedative and anticonvulsant properties, the latter being particularly marked in compounds in which R3 is a monocyclic aryl radical (e.g. phenyl) and R4 and R5 hydrogen.  Examples describe the preparation of 3 : 3-dimethyl-6-phenyl-, 3 : 3 - diethyl - 6 - (41 - methoxybutyl)-, 3 : 3 - diethyl - 5 : 6 - dimethyl-, 3 - ethyl - 3 - methyl - 6 - phenyl- and 1 : 6 - dimethyl - 3 : 3 - diethyl - 2 : 4 - dioxopiperidine.  A list is given of further products containing the following additional substituents: R1 and R2: propyl; R3: allyl, butyl, isopropyl, benzyl and ethyl.  Specification 742,733 is referred to.
Patent GB-210958-A (GB)
Title: Improvements in and connected with oil lamps
IPC: F23D3/00
Filed: 1923-01-11
Abstract: 210,958. Boyd, T. A., and Boyd, T. A. Jan. 11, 1923. Wick burners, flameregulating in.-To regulate or extinguish the flame of lamps having a container 1 with oil saturated discs 2, such as described in Specificat i o n s 24701/07 and 3429/10, the cover 5 having an open top cone 5<2> surrounding the wick 6<1> is connected to the container 1 by means of a screw thread 5<1>, or alternatively by a pin and inclined slot connection, so that the cover can be raised or lowered relatively to the wick.
Patent GB-191000471-A (GB)
Granted: 1900-01-01
Abstract: 471. Cattermole, A. H. Feb. 8. Skates.-A rubber or like roller block A is mounted in a spindle C to turn stiffly when brought into contact with the floor, and so to form a brake. The spindle is screwed, and the compression can be adjusted by nuts and washers. The block is also adjustable vertically in the brackets L.