baber/WOPTO huggingface dataset:
Patent GB-756236-A (GB)
Title: Improvements relating to electron discharge devices utilising velocity modulation
IPC: H01J25/02
Filed: 1954-03-24
Abstract: 756,236. Velocity-modulated tubes. GENERAL ELECTRIC CO. March 24, 1954 [March 27, 1953], No. 8627/54. Class 39 (1). In a high-frequency electron-discharge device the beam is density-modulated by an input signal applied between the cathode and grid 17, a resonator 32 excited solely by the densitymodulated beam and reacting.back on the beam to velocity modulate it at the same frequency as the density-modulation the velocity modulation augmenting the density modulation. It is shown that for most efficient bunching in the drift' space between buncher and catcher the bunching voltage should lag the current of the pre-bunched beam by a quarter cycle though in practice it is necessary to compromise with a phase angle of about 45 degrees. This is because control of the phase angle is effected by detuning of the resonant frequency of the buncher to a higher frequency than that of the density-modulation resonator and if detuning is substantial the resonator impedance decreases too much (the phase angle would be # if the buncher were not detuned at all). Further, the V.M. voltage lags the D.M. voltage by a phase angle of up to 90 degrees. The velocitymodulation unavoidably produced by the density-modulation resonator may be minimized by accelerating the beam before passing it into the buncher resonator. Part of the output can be fed back to either input resonator to give degenerative or regenerative amplification and in the latter case the device can function as an oscillator. In one form, Fig. 5, concentric line resonators 27, 32, 36 are used, tuned by plungers 30, 35, 39, tuning plunger 30 being in two parts with a mica washer in between. The input and output feeders are concentric lines the inner conductors of which pass through the tuning plungers 30, 39 and terminate in inductive loops contacting one of the plunger fingers. The catcher 36 is tuned to the input frequency or to a harmonic. Mica ring 19 allows a D.C. accelerating voltage to be applied between grids 17, 18. The envelope 26 is of ceramic tubing sealed to the electrode discs. In another embodiment, Fig. 6 (not shown), the control grid is common to the density-modulation resonator and to the buncher resonator and is of fine mesh to prevent interaction of the resonator fields.
Patent GB-309713-A (GB)
Title: Improvements in or relating to sealing means for gas container employed in inflationapparatus
IPC: F17C13/06
Filed: 1928-03-21
Abstract: 309,713. Tolzmann, R., and Sieracki, F. March 21, 1928. Addition to 296,298. Storing under pressure.-A closure for a gas container employed in inflation apparatus claimed in the parent Specification comprises a metal disc a<4> covering the open end, and a cap nut a<5> screwing on to the open end and having a bore a<6> for introduction of a tool to destroy the sealing disc. Specification 8433/10 also is referred to.
Patent GB-357506-A (GB)
Title: Improvements in or relating to electric storage cells and batteries
IPC: H01M50/103
Filed: 1930-03-18
Abstract: 357,506. Galvanic batteries. POLLOCK, S. A., Little Bush House, Kingsbury, London. March 18, 1930, No. 8726. [Class 53.] Cells; cases; gas exits; separators; connections to lead electrodes.-A storage battery has an outer casing 30 enclosing a sheet lead container 31 which is closed by a cover of lead or alloy which is joined to the lead container by fusion. The outer casing may be made of wood, steel, alloy, or other material. The inner container is made by bending a lead sheet into tubular form, the abutting edges being flanged. A fillet of lead is then placed in the angle of each flange and a blow-pipe is run along the outer surfaces of the fillets and flanges to fuse them together. The bottom is flanged and fused into position in the same way, the parts being held together by spring jaws during the burning process. The lead cover 43 is fused into position after the insertion of the plates and separators. The plates 10, 11 are surrounded by sheaths 26 of nitrated cellulose paper, the plates being provided with ridges and recesses so as to accommodate sufficient electrolyte within the sheaths to react with the whole of the active material. The plates are formed with tags 15 which are fused to interleaving lead strips 16 and each set is fused to a bus-bar 18. The latter is made of lead and covers a bronze strap 20 from which two terminal posts 19 project. Each bus-bar is of channel section and carries a tubular projection 23 for connection to a vent pipe communicating with an adjacent cell. Above the lead cover 43 are two wooden tops 46, 50 through which the terminal posts and vents pass. Adjacent cells are connected by pipes 61 terminating in bosses 60 which engage the vents 23. Pressure is exerted on the bosses 60 to compress a washer 62 by means of a bridge 63 and nuts 64. Specifications 357,504, 357,505, and 357,507 are referred to.
Patent GB-236626-A (GB)
Title: Improvements in or relating to bifocal lenses
IPC: G02C7/06
Filed: 1924-04-07
Abstract: 236,626. White, A. E., (Bausch & Lomb Optical Co.). April 7, 1924. Spectacle lenses. - Bifocal lenses comprise a major portion and an inserted segment, preferably fused, of the glass of the same disposition but different indices of refraction. The segment is of glass of a higher refractive index than that of the larger portion of the lens, and both lenses are of crown grass. Reference has been directed by the Comptroller to Specification 225,425.
Patent GB-250264-A (GB)
Title: Rim for power vehicle wheels with pneumatic tyres
IPC: B60B25/16
Filed: 1926-04-01
Abstract: 250,264. Vischer, J. J., (Assignee of Furrer, A.). April 1, 1925, [Convention date]. Tyre attachments to rims.-A divisible detachable rim with one flange b integral with the rim base a is formed at its outer edge with a veegroove c to receive bevelled lugs h on the detachable flange f. Lugs d, forming the outer wall of the groove c, co-operate with the lugs h in bayonet-joint fashion, the parts being locked in the position of use by set-screws k. Detachable-rim attachments to wheels. - The rim base a is formed with wedge-shaped bosses l which are clamped against corresponding seatings en the spoke ends m by plates n and bolts o.
Patent GB-653385-A (GB)
Title: Improvements in and relating to reservoir writing instruments
Inventor: FEHLING HANS REINHARD
IPC: D06F49/00
Filed: 1947-04-02
Abstract: 653,385. Reservoir pens. COMPANIA URUGUAYA DE FOMENTO INDUSTRIAL SOC. ANON. April 2, 1947, Nos. 8912/47 and 4683/48. [Class 146 (iii)] In a ball-point pen, a capillary device constituted by a gauze 7 or 8 is interposed between the reservoir 1 and the ball 4 to prevent passage of an ink meniscus beyond the position occupied by the device, For instance if air enters the gap between the ball and its housing, the meniscus thus formed does not pass beyond the gauze and leakage of ink at the open end of a vented reservoir is prevented. The location of the gauze is such that a capillary duct extends at each side of it ; the duct at the reservoir side may constitute a vented capillary reservoir. Two gauzes 7, 8 in series may be provided as shown with a capillary space 6a between them of sufficient volume to accommodate the expansion of air trapped behind the ball which might force the meniscus through the gauze 8. The point section may be provided with a capillary device and air trap as described in Specifications 650,754 and 650,804, and a suitable ink is described in Specification 621,847. Specifications 564,172, 571,698, 573,747, 651,509 and 652,359 also are referred to. The second Provisional Specification refers to Specification 651,481.
Patent GB-954232-A (GB)
Title: Improvements in or relating to photographic glazing machines
Inventor: BOWLER VALENTINE MARCUS
IPC: G03D15/02
Filed: 1961-03-10
Abstract: 954,232. Controlling electric heaters. KODAK Ltd. March 9, 1962 [March 10, 1961], No. 8958/61. Heading H5H. [Also in Division G2] A photographic glazing machine comprises a highly polished drum 1, heated by means of internal electrical elements (not shown). In contact with drum 1 is a resilient rubber roller 3, mounted for rotation on a shaft 4. Mounted on insulating blocks 6 along the length of the roller are three thermostats 8 for controlling the said heating elements, each thermostat having a metal shoe plate 7 bearing against the roller 3. A supplementary heating element in the form of an electric lamp 9 is mounted near each thermostat, as described in Specification 935,073, to avoid overheating due to time lag in the thermostat.
Patent GB-595733-A (GB)
Title: Activating red muds from the bayer alumina process
IPC: B01J20/04
Filed: 1945-04-11
Abstract: Residual Bayer alumina process "Red Muds" are heated at 140-190 DEG C. with caustic soda lye containing a quantity of Na2O 25-30 per cent. by weight in excess of the amount necessary to form Na2O.Fe2O3 and Na2O.Al2O3 ground and lixiviated with hot water to produce hydrated iron oxide for desulphurizing gases.  The material is preferably agglomerated with peat into shaped masses and dried in the open or in a kiln.  The agglomerates may be freed from sulphur with solvents even above the melting point of sulphur without disaggregation.  The lixiviation liquor containing dissolved alumina and vanadic acid may be recycled to a point at the Bayer cycle ahead at the final concentration of decomposed aluminate liquors according to their Na2O content.  Specifications 332,259, [Class 1 (iii)] and 429,321 are referred to.
Patent GB-850871-A (GB)
Title: Improvements relating to heat exchangers
Inventor: ROGERS ROBERT ARTHUR
IPC: F28D1/03
Filed: 1958-03-21
Abstract: 850,871. Making heat-exchangers; brazing. IMPERIAL CHEMICAL INDUSTRIES Ltd. March 21, 1958, No. 9098/58. Classes 83 (2) and 83 (4). [Also in Group XIII] In a method of making a heat-exchanger in which a plurality of dished plates 1 are stacked with adjacent plates facing in opposite directions so forming a group of superimposed hollow members, and in which extended heat transfer surface in the form of a corrugated sheet 18 is disposed between adjacent hollow members, the plates 1 and any necessary additional components such as header plates 11, 12 and header 15 are bolted together in a jig (not shown) and the assembly is preheated before brazing in a furnace or salt bath. The components may be coated with brazing alloy or suitably shaped sheets of brazing foil may be interposed on assembly. The heat-exchanger components may be of an aluminium alloy, the brazing being effected by an aluminium-silicon alloy. Alternatively a lead/tin brazing alloy is used if the heat-exchanger components are made of steel or copper.
Patent GB-760054-A (GB)
Title: Purification of naphthalene
Inventor: MILNER DAVID WILLIAM
IPC: C07C5/10
Filed: 1954-03-29
Abstract: Naphthalene, especially technically pure naphthalene, is treated at above its melting point with paraformaldehyde and acid in order to remove sulphur compounds.  An example is concerned with preparing a naphthalene of sulphur content 0.005 per cent by agitating, at 95-100 DEG  C., a naphthalene of crystallizing point 79.5 DEG  C. and sulphur content 0.4 per cent, double oil of vitriol of s.g. 1.84 and paraformaldehyde, neutralizing, and distilling off the naphthalene; the naphthalene so obtained may be hydrogenated with the aid of a catalyst not tolerant to sulphur, e.g. nickel.
Patent GB-1138396-A (GB)
Title: Brake mechanism of magnetic tape recorder
IPC: G11B15/43
Filed: 1966-03-02
Abstract: 1,138,396. Recording and playback. AKAI ELECTRIC CO. Ltd. 2 March, 1966 [3 March, 1965], No. 9151/66. Heading G5R. A push-button controlled tape recorder includes a brake mechanism incorporating separate brake arms, bearing on the tape feed and wind up reels, linked together in such a way that when the brake mechanism is operated, a brake is applied to the tape feed reel before being applied to the wind up reel, irrespective of the particular tape direction. Similarly, when the brake mechanism is removed, the brake on the wind up reel is released first. Such a system prevents breakage or slackening of tape. In the mechanism, pivoting brake arms 29 and 38 bear on the hubs of the tape reels 13 and 18. The arms are linked together by further arms 32 and 35 and are connected to the play, forward and reverse wind buttons P, F and B by the connecting slides 45, 55 and 62 respectively. The brakes are spring loaded so that they normally engage the hubs. When the play button is depressed, the slide 45 moves forward to operate the linkage so that first the brake on the take up hub 18 is released, then that on the supply hub 13. An arm 50 moves the pressure roller 25 so as to engage the tape with the drive capstan 24 arid an arm 61 operates a double pole switch 306, 307 to energize motors connected to the take up and supply hubs so that one drives the take up hub while the other brakes the supply hub slightly. The actuation of the fast forward or reverse wind buttons releases the brakes in a similar way by the movement of the slides 55 or 62, and operates switches 311 or 308 to energize the hub motors appropriately. An interlock arrangement beneath the buttons holds them down when depressed, and they are released by a stop button 5. A tension arm 26 monitors the tension in the tape and stops the drive mechanism when the tape slackens or its end is released.
Patent GB-417382-A (GB)
Title: Process for manufacturing bacterial preparations for internal use from bacteria non-pathogenic for the human body
IPC: A61K35/74
Filed: 1933-03-27
Abstract: Preparations to be administered by the mouth, for the prevention and treatment of typhoid, dysentery and like diseases, are prepared by making a pure culture of bacterium pullorum on an agar medium, suspending the bacteria in salt solution, sterilizing the suspension by heating or otherwise, separating the killed bacteria and drying them.  The dry product may be mixed with milk sugar, ground and again dried and may be used in powder or tablet form.  The serum of a rabbit to which the preparation has been administered internally exhibits increased powers of agglutination and bacteriolysis in respect of antigens of the typhoid group.
Patent GB-1427212-A (GB)
Title: P-hydroxymethylphenylglycine and derivatives
IPC: C07D249/04
Filed: 1973-06-12
Abstract: 1427212 p - Hydroxymethylphenylglycine and derivatives SMITHKLINE CORP 12 June 1973 [11 May 1973] 9246/75 Divided out of 1427211 Heading C2C Novel compounds I in which R<SP>1</SP> is hydroxy or when R 2  is other than hydrogen it may also represent chlorine 2,4- dinitrophenyloxy, N-imidazolyl or succinimidooxy and R 2  is hydrogen, t-butoxycarbonyl, benzylcarbonyl or trichloroethoxycarbonyl are prepared by (a) reduction of 1,4-benzenedicarboxaldehyde to p-hydroxymethylbenzaldehyde which is condensed with (NH 4 ) 2 CO 3 /NaCN to give 5 - hydroxymethylphenyl - hydantoin which is hydrolysed to p-hydroxymethylphenylglycine; compounds I (R 1 =H and R 2 =tBuOCO, B 3 OCO or Cl 3 CCH 2 OCO) are prepared from p-hydroxymethylphenylglycine by use of the appropriate azide and these are used to form compounds I (R 1 =2,4-dinitrophenoxy or succinimido-oxy) by reaction with an appropriate hydroxy compound in the presence of DCCI, compounds I (R 1 =imidazolyl) by reaction with carbonyldiimidazole and compounds I (R 1 =Cl) by chlorination.
Patent GB-742072-A (GB)
Title: Methods of making bends in structural members
Inventor: CRANMER CLAUDE ERIC
IPC: B21D11/20
Filed: 1953-04-02
Abstract: 742,072. Making stanchions &c. POWER'S & DEANE RANSOME'S, Ltd. Nov. 16, 1953 [April 2, 1953], No. 9264/53. Classes 83 (2) and 83 (4). Welding by fusion.-In a method of making portal frame roof structures of J or channel section beams the joints are made by cutting away portions of the section, bending the remaining flange portions to the required radius and welding on shaped web plates and flange portions to fill the remaining gaps. An apex or knee joint, Fig. 1, is formed by removing a portion of the web 4, Fig. 4, and flange 2 of a beam, bending the remaining flange 3 and welding on a shaped web-plate 5 and curved inner flange piece 13. A Y joint, Fig. 3, is formed by removing a portion of web 7, Fig. 5, and cutting through and bending the flanges 14 to the required inside radius. A stanchion 8 with an end portion of the web removed, leaving projecting flanges 9 to meet the flanges 14 at butt welds 10 is then welded to the joint together with a shaped web plate 11. The various frame parts may be assembled on the site and welded together at butt welds 12.
Patent GB-385599-A (GB)
Title: Improvements in or relating to devices for drawing off water from containers or pipes which are under pressure
IPC: F16T1/34
Filed: 1931-03-26
Abstract: 385,599. Steam traps. HARBURGER METALLGIESSEREI UND ARMATURENFABRIK A. JOHNS, 5, Sch³ttstrasse, Wilhelmsburg, Harburg, Germany. March 26,1931, No. 9284. Convention date, March 26, 1930. Void [Published under Sect. 91 of the Acts]. [Class 64 (ii).] A device for drawing-off water from containers or pipes under pressure comprises a two-part casing a, b having a porous plug c through which condensate passes to the outlet e. A valve - controlled outlet f is provided above the plug to discharge condensate and dirt when required. Freezing of the plug in cold weather is prevented by a heating jacket b, from which condensate is discharged through a porous plug d.
Patent GB-803470-A (GB)
Title: Contour checking gauge
Inventor: DAVIS BERNARD VICTOR
IPC: G01B5/20
Filed: 1957-03-22
Abstract: 803,470. Surface and outline gauges. ARMSTRONG SIDDELEY MOTORS, Ltd. March 22, 1957, No. 9404/57. Class 106 (2). A gauge for checking a contour of an object 28 comprises a part 12 adapted to hold the object 28 in a predetermined position, a probe 51, means for moving the part 12 and probe 51 relatively to one another, both angularly and linearly, to bring the probe 51 into contact with successive points on the periphery of the object 28 and means for indicating accurately the position of a predetermined point 52b of the probe 51 relative to a predetermined, fixed point 21a in terms of polar coordinates. The part 12 can be turned through 360 degrees, one degree at a time, by means of a fine adjustment relative to a part 11 and a coarse adjustment of the part 11 relative to the base 10. The part 11 is located at 5-degree intervals by a spring-pressed projection 41 engaging successively between 72 equallyspaced teeth 37, 38, 39, 40 . . . and for each of these locations the part 12 is successively located in five equally spaced angular positions relative to the part 11 by aligning in turn corresponding pairs of suitably-spaced holes 31, 32, 33, 34, 35 in an arcuate block fixed by screws 29 to the part 11 and holes 31a, 32a, 33a, 34a, 35a in the part 12 and by inserting a pin 36 in the aligned pair. To locate the work 28 on the part 12, two holes 21, 27 in the work 28 fit over studs 21a, 26a in the part 12, the first stud 21a being co-axial with the axis of rotation and the second, 26a, provided on a pin 26 which can be inserted in alternative holes 24, 25 in the part 12 to accommodate different sized workpieces. The probe 51 is constrained to slide in a guide 49, which guide can be located in one of two positions by a pin 56 and suitably aligned holes to provide a course adjustment of the probe 51 relative to the work 28, while a micrometer screw 59 provides for very fine adjustment. The probe 51 may have a pointed end to engage the work or may be provided with a feeler head 52 with part-circular periphery 52a.
Patent GB-126509-A (GB)
Title: Improvements in and relating to Exhaust Silencers for Internal Combustion Engines.
Inventor: WALTON SAMUEL
IPC: F01N13/08
Filed: 1918-06-10
Abstract: 126,509. Walton, S., and Leather, W. June 10, 1918. Exhaust - - silencers. - A silencer for internal-comcombustion engines comprises an expansion chamber receiving the exhaust gases direct from the cylinders and an open-ended pipe b leading from the expansion chamber and having one or more ejector devices through which air is drawn by the motion of the vehicle. The ejectors comprise slots c' formed by cutting and pressing out longitudinal tongues c and surrounded by a hood c<2>. The tongues c may taper towards the outlet
Patent GB-562639-A (GB)
Title: Improvements relating to grinding mills
IPC: B02C15/14
Filed: 1942-07-08
Abstract: 562,639. Grinding mills. FARFAN, F. T. July 8, 1942, No. 9499. [Classes 59 and 86] A power driven grinding mill for treating a wide variety of materials comprises a pair of cones arranged one within the other and undergoing relative rotation about a substantially vertical axis, the material being introduced between the cones at their upper ends and delivered in a finely comminuted state at their lower ends into a receptacle in which mixing or further reduction takes place under the action of members which are driven while the cones undergo relative rotation. As shown in Fig. 1, the inner cone 6 is mounted on a vertical shaft 7 and driven by worm gearing 8. The outer cone 5 is attached to the central conical portion 12 of the cover 11 of a container 10 in. which rotates a receptacle, in the form of an annular trough 9, into which material is fed from the base of the cones and further ground or mixed. Material to be ground is fed into a hopper 1 and is fed by a screw 3 into the space 4 between the cone 5 and top of the cone 6. The surfaces of the cones are provided with helical grooves which are spaced apart and of varying depth. The inner cone may yield against the action of a spring 18 and a cushioning spring 34 is provided around a sleeve 32. The inner cone drives through gearing 49, 50, 51 the trough 9. Further grinding or mixing is effected by granite edge runners 52 mounted on shafts 52a carried in blocks 53 having trunnions 54 journalled in blocks 55 which can rise against the action of compression springs 56 and slide in guides 57 secured to the cover 11. The inner. cone may be adjusted by a hand wheel 29 and the outer cone may be adjusted by screws 40 bearing on the rim of the cover 11 and mounted in lugs 41 attached to the container. The material in the trough may be heated by a spiral tube 60 through which heat - ing fluid is passed. When the apparatus is employed for making cocoa preparation, a vibrating annular tray 63, Figs. 1 and 2, may be employed for moulding purposes. The tray is supported on rubber blocks 64 mounted on brackets 65 and carries four arms 68 through which vibration is imparted by projections 70 mounted on the rotary shaft 7 and provided with cam surfaces 71. Lubrication of the cam surfaces is effected by an oil cup 72 on top of the shaft 7 communicating through a passage 73 in the shaft 7 and passages in the projections 70 with outlets 74 in the cam surfaces.
Patent GB-547987-A (GB)
Title: Improvements in centrifugal switches
IPC: H01H35/10
Filed: 1941-07-26
Abstract: 547,987. Centrifugal switches. HEENAN & FROUDE, Ltd., WALKER G. H., and HAYES, C. T. July 26, 1941, No. 9507. Addition to 544,235. [Class 38 (v)] In a modification of the parent Specification, adjustment is effected by means of a wire or tensioned rod 80 connected between the weighted lever 38 and the adjusting device, which may consist of a lever 90 movable about a fixed pivot by rotation of a screwed shaft carrying a nut also carried by the lever, Fig. 1 (not shown), The wire 80 is secured to a sleeve 82 carried by a ball bearing in the lever 90. Specification 547,964 is referred to.