baber/WOPTO huggingface dataset:
Patent GB-821527-A (GB)
Title: Improvements relating to travelling wave electric discharge devices
Inventor: WEBBER STANLEY EUGENE
IPC: H01J25/38
Filed: 1956-02-13
Abstract: 821,527. Travelling wave tubes. GENERAL ELECTRIC CO. Feb. 13, 1956, No. 4435/56. Class 39(1). [Also in Group XL(c)] In a travelling wave tube of the helix type the input feeder connection 4 is coupled to the helix at an intermediate portion along its length and an attenuator 14 is disposed between the input coupler and that end of the delay line adjacent to the beam source and a turnable resonant circuit is connected to the input feeder connection 4. The helix may be replaced by a disc loaded rod or disc loaded waveguide. The loss material 14 can be a platinum band around the outside of the envelope or a colloidal graphite coating on the envelope and can in general be inside, outside or part of the envelope. The input signal divides into two parts, which travel in opposite directions to matched loads 24, 26 via coupling transformers the coupling between the primary and secondary of which is variable for impedance matching. For broad band amplification the degree of input coupling for the helix is small, to ensure that the reflected wave is attenuated by loss material 14 (and not reflected by input circuit 4). For television applications where a moderate frequency band width is to be handled, but in which switching from one channel to another occurs over a broad band, the inputhelix coupling is better. The input circuit may comprise a probe, resonator or directional coupler 4. As shown it is a probe coupled to a resonant circuit 20 (20 thus being a narrow band circuit suitable for television applications) comprising variable capacity 21 and transformer 22 through which the input signal is applied. Alternatively the input circuit may comprise a coaxial line section provided with a tuning plunger, the inner conductor of the coaxial line being coupled to the probe 4 and the outer conductor to a short section of conductor outside the tube envelope and the probe terminating in a loop. For television applications the input circuit 20 has large coupling with the helix for the frequencies to be amplified and a smaller degree of coupling for the other frequencies. The output must be well matched in this core and reflected waves outside the desired band are absorbed by 14. The output transformers 25 can be replaced by tapered coaxial lines. To switch from one channel to another, the parameters of the input and output circuits are varied. The electron beam can be hollow or cylindrical and when the circuit is heavily loaded the velocity of the beam can be twice the velocity of the wave. The tube may be an amplifier or oscillator. For an oscillator an external feedback circuit is used the frequency of oscillation being determined by the external circuits. A longitudinal magnetic field focuses the beam. The envelope can be of glass as shown or a metal cylinder within which the helix is supported by insulating rods.
Patent GB-207438-A (GB)
Title: Improved tool for cross cutting wood and the like
IPC: B27F5/10
Filed: 1923-02-15
Abstract: 207,438. Thomson, W. G., and Steele, G. M. Feb. 15, 1923. Addition to 180,743. Tools.-Two or more wood-cutting tools 18 of the kind described in the parent Specification are mounted in a holder 14 with a shank 13 for carrying in a reciprocating machine. The tool spindles are rotatably adjustable in blocks 17, being held by spring catches 27, and the blocks are adjustable in the holder by means of handles 23. The projecting cutting parts of each tool are of different lengths. Fig. II. shows one adjustment of cutters and Fig. II.<A> the corresponding cut, for a recess with an inclined face.
Patent GB-724418-A (GB)
Title: Improvements in methods and apparatus for pitch mining of coal and the like
IPC: E21C27/28
Filed: 1953-02-17
Abstract: 724,418. Mining. POWELL, E. T. Feb. 17, 1953 [March 18, 1952], No. 4457/53. Class 68(1). A method of pitch-mining coal, &c., comprises driving an opening 101 in a seam between an upper and a lower level 11, 12 and at right angles to the strike, and then undermining the exposed seam either in an inbye or outbye direction so that the coal detached during the undermining operation falls by gravity down through the opening, as does the undermined portion of the seam on caving. The seam is undermined by detaching successive sections of the base thereof by a gravity-actuated impact tool having an inclined head 35 provided with piercing means 36. The tool is raised by a winch 40 positioned at the level 11 and gravity-driven downwards to break out a shelf 30 exposed in the undercut portion of the seam. The slope of the shelf is complementary to that of the impact tool and extends downwards and outwards.
Patent GB-575245-A (GB)
Title: Improvements in and relating to footwear
IPC: A43B23/28
Filed: 1944-03-10
Abstract: 575,245. Footwear. NOUPEX, Ltd., and KORFF, F. C. March 10, 1944, No. 4511. [Class 17 (ii)] A foot or hose protector for wear inside a shoe is made of two similarly shaped pieces 1 of soft washable material shaped to the contour of the foot in profile and the edges of which are stitched around their peripheries at 2 except for an entrance opening for the foot around which an elastic element 3 is secured. The seam uniting the two parts runs under the sole and is preferably composed of zig-zag stitches which permit expansion of the material. The elastic element preferably comprises an elastic cord secured by over stitching. In a modification, the heel portion is constituted by a separate element of stiffer material stitched to the main foot along its bottom and side edges.
Patent GB-402281-A (GB)
Title: Improved starting mechanism for mobile and stationary power engines
IPC: F02N15/02
Filed: 1933-02-14
Abstract: 402,281. Turning-gear. PULVIS AKT.- GES., Glarus, Switzerland. Feb. 14, 1933, No. 4514. Convention date, Feb. 19, 1932. [Class 7 (v).] In an electric starter for mobile or stationary engines, the starter pinion 6 is driven from the electric motor 1 through a slipping coupling comprising a driving wing wheel 4 and a surrounding drum 5 partly filled with a powdered mass, as described in Specification 370,465, [Group XXIV]. As shown, the drum 5 is integral with or fixed to the pinion 6, which may be constantly in mesh with an engine gear 7 or movable axially into mesh. In modifications, the drum 5 is mounted on a threaded or splined shaft on which the pinion is movable axially into mesh with the engine gear.
Patent GB-140185-A (GB)
Title: Improvements in lavatory basins
IPC: E03C1/182
Filed: 1919-02-24
Abstract: 140,185. Thorpe, F. B. Feb. 24, 1919. Lavatory basins.-A cham her 1 for the reception of the inlet valve is formed integral with the basin. The valve may then be left in the rough An aperture Y in the top of the chamber allows the pass age of the valve spindle.
Patent GB-236850-A (GB)
Title: Improvements in and relating to internal combustion engines
IPC: F16J1/16
Filed: 1925-02-18
Abstract: 236,850. Babcock & Wilcox, Ltd., and Douglas, G. C. Feb. 18, 1925. Connecting-rods. - In a piston for an internal-combustion engine of the type in which the whole of the lower surface of the gudgeon pin forms a bearing surface, the piston is formed with two semicylindrical lugs a to which a hollow gudgeon pin b is secured by means of studs c. The length of the lower brass f of the connecting- rod is approximately the length of the gudgeon pin, while the length of the cap e is approximately equal to the distance between the lugs a.
Patent GB-382832-A (GB)
Title: Improvements in or relating to the slicing of timber
IPC: B27L5/00
Filed: 1932-02-16
Abstract: 382,832. Slicing timber. FIDDES, J., Torry Sawmills, Aberdeen. Feb. 16, 1932, Nos. 4560 and 8174. [Class 145 (i).] Slices are cut from blocks of timber 53 placed in a holder 52 by blades 51 each set in a slot 48, several such slots being formed in a flat disc 30 rotated about a vertical axis by a motor 39 through gearing 40, 37, 36. Several holders 52 are arranged on a disc 31 which may be rotated oppositely to the disc 30 or may be held stationary. Each holder is provided with a gripper, such as a hook 54, actuated by cams 60, 61 on the disc 30 so as to grip the block which is being sliced ; a spring-pressed plate (not shown) may be used instead of the hook. The size and arrangement of the holders may be varied. The wood is preferably steamed before cutting.
Patent GB-1133037-A (GB)
Title: Circuit interrupting means for a high voltage d.c. circuit
IPC: H01H33/59
Filed: 1967-01-31
Abstract: 1,133,037. Protective arrangements. GENERAL ELECTRIC CO. 31 Jan., 1967 [10 March, 1966], No. 4566/67. Heading H2K. [Also in Division H1] A D.C. circuit is interrupted upon overload by a vacuum switch 25, the resulting arc being extinguished by discharging a capacitor 35, which is charged from the line 16 by a resistor 55, through an oscillatory circuit in parallel with the vacuum switch so as to create an artificial current zero. Upon overload a relay 62 energizes a solenoid 64 to release the vacuum switch. A cam moving with vacuum switch contact 28 operates switches to fire a pulse generator 56 initiating an arc within a vacuum spark gap device 38 to complete the parallel circuit 36. Due to the inductance 50 of the circuit the current 39 from capacitor 35 is oscillatory and after an initial rise the current in vacuum switch 25 falls to zero.
Patent GB-371983-A (GB)
Title: Plate bending machines
IPC: B21D5/14
Filed: 1931-02-14
Abstract: 371,983. Bending plates. FROST, W., Eagle Ironworks, Crawford Street, Rochdale. Feb. 14, 1931, No. 4673. [Class 83 (iv).] The work clamping beam a of a pivoted plate bender for forming square tubes, or the upper roll o of a roll bender for forming circular tubes, are mounted in pillars b, c provided with circular rack teeth so that they may be adjusted vertically by pinions e, f on a cross shaft g rotated by worm gear and so that the beam or roll may be swung sidewise with one of the pillars in order to remove the finished tube. The pillar c is open at one side and the beam or roll normally secured therein by a screw d. The worm gear may be operated by a hand-wheel or by belt and reverse gear.
Patent GB-1375881-A (GB)
IPC: H01M6/18
Filed: 1972-02-01
Abstract: 1375881 Lithium-iodine cell WILSON GREATBATCH Ltd 1 Feb 1972 [4 Feb 1971] 4679/72 Heading H1B A cell comprises iodide cathode material 28 fitted tightly within an anode enclosure 22 of lithium, this enclosure being formed at its open end with a shoulder 23 and closed by a precision force-fit cap 38 of lithium. A solid electrolyte is self-generated between the cathode 28 and anode 22 and comprises LiI. The iodide material 28 is in the form of two slabs between which is sandwiched an expanded or corrugated metal current collector 29, a lead 31 surrounded by an insulating sleeve 32 being welded to the collector. A seal of plastics material 40 is applied over the cap 38 and the cell is hermetically sealed in a stainless steel container 21 having a welded-on stainless steel lid 41. The cell is intended for implantation in the human body.  (For Figure see next column.)
Patent GB-764863-A (GB)
Title: Improvements relating to marking compositions
IPC: C09D11/02
Filed: 1954-02-17
Abstract: 764,863. Inks. FRASER, R. P. Feb. 16, 1955 [Feb. 17, 1954], No. 4701/54. Class 146(3). A marking ink composition suitable for marking customers' identification symbols on laundry goods and for impregnating ribbons or screens from which the ink can be offset by pressure of a type key, stamp, or pencil consists of finely divided carbon or metal oxide pigments, and elementary sulphur dispersed in a liquid vehicle having a vapor pressure of less than 0À10 mm. at 20‹C. e.g. mineral oils plasticisers and glycols having the vapor pressure specified. The ink is preferably applied to the fabric by heating it to a temperature above the m.p. of sulphur e.g. by ironing or passage between heated rollers. In examples (1) 1.5 parts carbon and 8 parts precipitated sulphur are dispersed in 4 parts olein having a b.p. of 240‹C. (2) employs ditolyl phosphate as vehicile (3) 1 part carbon, 4 parts sulphur and 2 parts chlorinated diphenyl are dispersed in 7À5 parts chlorinated diphenyl having a distillation range of 340‹-375‹C. (4) rouge and sulphur are dispersed in dibutyl phthalate. Cadmium red, titanium oxide or ultramarine may replace the rouge.
Patent GB-1410316-A (GB)
Title: Benzothiazole ureas their compositions and methods for the production and use thereof
IPC: C07D277/82
Filed: 1974-02-01
Abstract: 1410316 Benzothiazole ureas NIPPON SODA CO Ltd 1 Feb 1974 [5 Feb 1973] 04771/74 Heading C2C Novel benzothiazole ureas of the Formula I wherein R is an isopropyl or t-butyl group, are obtained by reacting 5-(isopropyl or t-butyl)-2- methylamino benzothiazoles with methyl isocyanate. A herbicidal composition comprises a compound of the Formula I as active ingredient. 5 - t - Butyl - 2 - methylamino - benzothiazole is obtained by reacting (1-(m-t-butyl phenyl)-3- methyl-thiourea with bromine, or by reacting 5 - t - butyl - 2 - mercapto - benzothiazole with methylamine. 5-t-Butyl-2-mercapto-benzothiazole is obtained by reacting m-t-butyl aniline with carbon disulphide and sulphur. Reference has been directed by the Comptroller to Specification 1,309,336.
Patent GB-1110997-A (GB)
Title: Process for producing gamma crystal phase quinacridone pigments
IPC: C09B48/00
Filed: 1967-02-01
Abstract: Gamma crystal phase quinacridone is produced in a particle size of 0.09-0.3 m  by pouring a solution of a quinacridone in sulphuric acid into an organic polar solvent.  The solvent may be 2-pyrrolidone, N-methyl- or N-ethyl-2-pyrrolidone, quinoline, pyridine, dimethylformamide, dimethylsulphoxide, dimethylacetamide, tetramethylurea, tetramethylsulphone, hexamethylphosphorylamide, ethanol or methanol.  The quinacridone is preferably dissolved in sulphuric acid having a concentration of at least 70% at below 30 DEG C. to form a solution having a quinacridone concentration of from 5 to 25%.
Patent GB-300443-A (GB)
Title: Improvements in or relating to fluid pressure brake apparatus for railway vehicles
IPC: H01H63/18
Filed: 1928-02-16
Abstract: 300,443. Hildebrand, W. Feb. 16, 1928. Addition to 247,535. Fluid - pressure. - The connection of the train-pipe to a venting chamber is effected by the graduating valve of the main control valve or of a separate easily movable slide valve operated by the piston of the main valve which also controls the outlet from the chamber to atmosphere, the operation being such that the train-pipe is connected to the chamber by the initial movement of the valve piston and before the closing of the outlet of the chamber by the main valve. As shown in Fig. 1, the venting chamber connected to the port u is normally connected by a passage m in the main valve b to a throttled port o leading to the atmosphere. The initial movement of the piston p of the valve moves the graduating valve a to connect the train-pipe port l to the chamber by the. ports l<1>, n, m. The subsequent movement of the main valve b closes the exhaust port o while leaving open the connection of the train-pipe to the chamber. In a modification, the connection of the train-pipe to the chamber is effected by a separate small slide valve connected to the piston p and disposed on the other side thereof to that of the valves a, b.
Patent GB-1242955-A (GB)
Title: Preparation of benzotriazoles
Inventor: RANDELL DONALD RICHARD
IPC: C07D249/18
Filed: 1969-01-29
Abstract: 1,242,955. Benzotriazoles. GEIGY (U.K.) Ltd. 28 Jan., 1970 [29 Jan., 1969], No. 4905/69. Heading C2C. Benzotriazoles are produced by reduction of the corresponding N-hydroxy benzotriazole with a compound of trivalent phosphorus (e.g. a tri-aryl or tri-alkyl phosphite or a phosphorus trihalide). Starting materials exemplified are N - hydroxy benzotriazole, and the 5-chloro-, 6- chloro -, 6 - methyl and 6 - methoxy - 1 - hydroxy benzotriazoles. The products may be used as copper deactivators.
Patent GB-257497-A (GB)
Title: Improvements in and relating to winding machines
IPC: B65H54/14
Filed: 1925-04-28
Abstract: 257,497. Joyce, J. D. April 28, 1925. Winding - machines; spindle-driving arrangements. - In a winding- machine, as described in Specification 257,315, bunch - building means control the traverse of the thread until the bunch reaches a predetermined thickness. The drive shaft 1, Fig. 1, drives a countershaft which is journaled in a casing 1<a>, and carries a cam which actuates rock-shafts 8. Friction-wheels 9 on the shaft 1 drive wheels 10 slidably keyed to shafts 11 which carry cop-spindles 12. An arm 20, Fig. 1, which is rocked by the shaft 8 through a clutch 17, reciprocates a bar 22 which actuates bars 23, 24, the former of which carries a sharer plate 26. A screwed rod 25, Fig. 6, slidably pivoted at one end 82, is pivoted to slide laterally at its other end in a slotted plate 28 on the rod 24. On the rod 25 is mounted a thread guide carrier 90. an arm 87 on which is held in engagement with the shaper plate 26 by a spring to govern the lateral position of the rod 25 about the pivot 82. The carrier 90 is mounted on a sleeve 93, Fig. 6, on the rod 25. On a disc 95, rotatably mounted on the sleeve 93, is pivoted a carrier 97, in which is journaled a worm 98 spring-held in engagement with the screwed rod 25. A spiral spring 102 wrapped tightly round the worm-spindle 99 and fixed to the carrier 97 prevents rotation of the worm in one direction, so that, when the disc 95 is frictionally rotated by the cop, the worm 98 feeds forwards the carrier 90 on the rod 25. To return the carrier 90 to initial position, the worm 98 is raised from the rod 25. In starting a cop, the yarn passes through one of two thread-eyes 14a, 14<b> to the thread-guide 15 on the carrier 90, and then over a pin 16 to the spindle 12. The pin 16 is fixed to a plate 30 which is universally pivoted to a slotted frame-plate 37. The yarn is made to form a bunch at the base of the spindle 12 until the plate 30, which engages the underside of the wound yarn, is depressed sufficiently for a lug 35 thereon to enter the slot in the plate 37 under the influence of a spring 38, so that the pin 16 releases the yarn, which thereupon partakes of the usual motions of the thread-guide 15 to build up the cop.
Patent GB-793281-A (GB)
Title: Television receiver
IPC: H01J29/89
Filed: 1956-02-17
Abstract: 793,281. Comparing colours. SYLVANIA ELECTRIC PRODUCTS, Inc. Feb. 17, 1956 [Feb. 23, 1955], No. 5053/56. Class 97(1) [Also in Group XL(b)] To facilitate correct adjustment of the controls in a colour television receiver, the receiver incorporates a window 18 arranged to display a reference colour with which the receiver screen 12 may be compared whilst reproducing a colour test pattern. In one arrangement, Fig. 2, a drum 24 bearing a series of filters 46 around its periphery is mounted behind the window, together with a suitable source of illumination 47, and is arranged for manual rotation by a knurled disc 54 so as to position any desired filter between the light source and window. Preferably the filters are coloured respectively white. yellow, cyan, green, magenta, red and blue in correspondence with the colours of seven vertical bars in the standard test pattern. The source of illumination 47 may comprise an incandescent lamp, which is preferably energized from points of constant potential in the receiver circuitory. A hinged flap 22 mav cover the window when not in use. Alternatively, an opaque element may be included in the series of filters to permit the light to be cut off. In a second arrangement, Figs. 4 and 5 (not shown), the filters are carried by a disc which may be rotated between the light source and window to bring a selected one into use. Specification 788,886 is referred to.
Patent GB-510197-A (GB)
Title: Improvements relating to sheet metal heat interchanging apparatus for fluids
IPC: F28F3/02
Filed: 1938-02-18
Abstract: 510,197. Plate heat-exchangers. WAGNER, C. O. Feb. 18, 1938, No. 5091. [Class 64 (iii)] A heat-exchanger for use, e.g. as a radiator for cooling oil or water on an aircraft or motorvehicle is composed of plates a having fins c, formed by pleating the plates and pressing the sides of the pleats together throughout their length, and recesses d disposed at right angles or otherwise to the fins.. The plates are formed with interlocking loops e, and are secured together at the points f by spot-welding &c. Air flows through the spaces between the fins and oil or water through the recesses. In a modification, the plates are arranged as shown in Fig. 4, reinforcing wires i being provided in grooves formed in the edges of abutting fins. Specification 184,412, [Class 64 (iii)], is referred to.
Patent GB-555680-A (GB)
Title: New method of retreading and repairing rubber pneumatic tyres
IPC: B29D30/54
Filed: 1942-04-17
Abstract: 555,680. Re-treading pneumatic tyre covers. WRIGHT, S. A. April 17, 1942, No. 5101. [Classes 70 and 87 (ii)] A worn pneumatic tyre cover 1 is re-treaded by applying the new tread, e.g. as strips 3 spaced &c. by a matrix 4 with ribs 5, applying an asbestos-covered electric heating element 7, and applying pressure by inflatable rubber bags, e.g. using an inner tube 6 and an outer tube 8, the outer part of the latter being held by halves 9, 10 of a circumferentially-divided outer cover. The halves 9, 10 are held together by clips 11, 12 and a metal ring 13. The tubes 6, 8 are inflated through valves 15, 14, the tube 6 to e.g. the higher pressure. The entire assembly may be supported on a wide wheel-rim 17. Specification 555,689 is referred to.
Patent GB-657652-A (GB)
Title: Improvements in or relating to pulley belts
IPC: F16G11/10
Filed: 1949-02-24
Abstract: 657,652. Belt gearing. HISCOCK, H., HISCOCK, R. S., and HISCOCK, F. R., (trading as STEELACE-MANUFACTURING CO.). Feb. 24, 1949, No. 5119. [Class 80 (i)] A fastener for a circular or substantially circular belt comprises a hook 8 and eye 9 which are secured respectively in the ends of the belt 1 which ends are reduced in diameter to receive collars 5 which leave spaces 6, 7 of the reduced portions protruding ,which are expanded by the screws of the hook and eye into flanges 10. Speci-: fication 657,653 is referred to.
Patent GB-129945-A (GB)
Title: Improvements in Ventilators for Light Projectors or Lanterns.
Inventor: EWART SAMUEL
IPC: F21V37/02
Filed: 1919-03-01
Abstract: 129,945. Ewart, S., and Ewart, J. W., and Prangnell, N. W. March 1, 1919. Searchlights; lantern cowls.-In an electric search-light projector, the arc gases, before escaping into the atmosphere, pass between several tiers of cooling tubes open to the air at both ends arranged in a casing resting on the body of the projector, the deposition of the solid constituents in the gases being thereby effected. Preferably three tiers are used, the first tier consisting of parallel quadrangular tubes a, the second of parallel triangular tubes b staggered relatively to the tubes a, and the third of parallel triangular tubes c at right-angles to the tubes a, b, so that the escape of direct light rays is prevented. Baffles i are fixed to the casing d above the outer tubes a. The tubes are provided before insertion in the casing with flanged bands j which ensure a light-proof joint between the tubes and the casing and also support the casing while the tubes are being flanged. The casing d projects above the tubes c and is covered by a hood n having a downwardly depending flange o which, together with a baffle r, screens the slots m in the casing through which the gases escape. The tubes a, b, c are preferably each formed of a single plate, the edges of which except at the end portions are left slightly open so that when the projector is moved rapidly, air will pass through the gaps and increase the up-draught. Screens u may be fixed to the body of the projector or the lower edge of the casing to collect and direct the fumes.