baber/WOPTO huggingface dataset:
Patent GB-871614-A (GB)
Title: A method for the preparation of silicon
Inventor: COWLARD FREDERICK CLAUD
IPC: C01B33/04
Filed: 1956-05-02
Abstract: <PICT:0871614/III/1> Silicon having an impurity content less than one part in a million is prepared by decomposing a silicon hydride which has first been purified by a process of gas chromatography.  Silane is prepared by reacting a solution of ammonium bromide in ammonia in vessel 10 with magnesium silicide supplied from side chambers 12. The vessel is maintained at about -50 DEG C. and ammonia is supplied through tube 14.  The resulting silicon and other hydrides and excess ammonia are passed through a dephlegmator 16 in a cooling jacket 17, and via refrigerating column 21 to chromatographic separating tubes 24 filled with absorbent material such as Kieselguhr wetted, if desired, with silicone oil and maintained between -60 DEG  and -112 DEG C.  The constituents emerge in order of their volatilities and may be varified by measuring their thermal conductivities by means of a cell comprising a wire 31 in central tube 30 surrounded by mercury 32 and maintained at a constant temperature by acetone vapour in jacket 33.  Current is passed through the wire, the resistivity of which varies with its rate of cooling which depends on the thermal conductivity of the gas.  The gases are then passed through a cooled quartz wool trap 35 and filter 37, and the pure monosilane component directed to a thermal decomposition chamber 42 maintained at an appropriate temperature by heater 44 and at low pressure by pump 43. Silicon of an impurity level of one in a million or less is deposited, and appropriate impurities such as boron or phosphorus to give desired electrical conductivity may then be added and the silicon crystallised into a monocrystalline body.  The unwanted hydrides may be modified by chemical reaction to produce compounds of differing volatilities more distinguishable from the monosilane. For example for boron hydride the reagent may be water, acetaldehyde, acetone or methyl alcohol, and for phosphorus hydride it may be ammonium sulphate in concentrated sulphuric acid and mercuric chloride in alcohols.
Patent GB-909272-A (GB)
Title: Tobacco composition
IPC: A24B15/14
Filed: 1959-04-21
Abstract: Tobacco sheet material is formed from finely divided tobacco using a polysaccharide gum such as ethyl hydroxyethyl cellulose as an adhesive and tetraethylene glycol as a humectant.  A cross-linking agent such as glyoxal or oxystarch may be included. In forming the sheet material, tobacco particles may be mixed with the adhesive or coated on a layer thereof and, where an aqueous slurry of tobacco and adhesive is used, paper or tobacco fibres may be added.  The sheet material may be used for cigar wrappers, binders or fillers or cigarette fillers.  The ethyl hydroxyethyl cellulose may be used in combination with other gums, and locust bean gum (a galactomannan gum), methyl cellulose and carboxymethyl cellulose are mentioned as gums with which it will combine in all proportions.  Specification 909,273 is referred to.  Reference has been directed by the Comptroller to Specification 874,135.
Patent GB-416907-A (GB)
Title: Improvements in means for transporting railway vehicles by road
IPC: B60P3/06
Filed: 1934-05-04
Abstract: 416,907. Steering and driving road vehicles. GOTHAER WAGGON-FABRIK AKT.-GES., Gotha, Germany. May 4, 1934, No. 13563. Convention date, May 6, 1933. [Classes 79 (ii) and 79 (v).] In a tractor and trailer combination for transporting railway vehicles over roads all or most of the road wheels are steerable. Fig. 1 shows one arrangement comprising links or rods l<1>, m<1>, m<2> and gears n<1>, n<2> for the deflectable stub axles while Fig. 2 shows another arrangement comprising shaft l<3>, gears q, n<3>, n' and rods m<3>-m<5>. Some of the steering wheels may be driven, as shown in Fig. 2, by means of the motor b<1>, shaft e<1>, gearing f<4>, f<6>, g<1>, cardan shafts, and wheel gearing i, k<1>.
Patent GB-382568-A (GB)
Title: Improvements in or relating to direct-current welding apparatus
IPC: B23K9/10
Filed: 1932-05-11
Abstract: 382,568. Converting electric currents. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. May 11, 1932, No. 13572. Convention date, May 26, 1931. [Classes 38 (ii) and 38 (iv).] Direct-current arc welding apparatus is supplied with current from an alternating- current source through one or more gas-filled incandescent cathode rectifying tubes, preferably furnished with oxide cathodes. In the arrangement shown, the secondary windings 5 of a three-to-six - phase transformer 1 are connected to the anodes 6 of gas-filled rectifiers 7 whose cathodes 8 are supplied from the secondary winding 9 of a heating transformer 4 connected across one of the phases of the supply. A relay is provided for the purpose of ensuring that the discharge in the rectifiers only sets in some time after the switching-in of the cathodes. As shown, a thermal relay of the kind described in Specification 365,880 is used. On insertion of the plug 3, the heating transformer 4 is connected in circuit, and a circuit is also closed through the heating element 15 of a bimetallic strip 16, a resistance 17 and the exciting winding of a magnet 18. The current through the latter winding is insufficient to raise the armature 19 and close the main switch 2 until the heating of the strip 16 closes a circuit at 20, 21 and short-circuits the heating element 15 and resistance 17. On closure of the switch 2, an auxiliary contact 22 thereon short-circuits the contacts 20, 21 and connects the exciting winding directly across the mains.
Patent GB-1300873-A (GB)
Title: Calculator for monochromator dispersion
IPC: G06G1/02
Filed: 1971-05-06
Abstract: 1300873 Indicating apparatus BECKMAN INSTRUMENTS Inc 6 May 1971 [24 June 1970] 13597/71 Heading G1J [Also in Division G2] Apparatus for determining spectral bandwidth for use in a monochromator having a slit drive 16 and a wavelength drive 8 comprises a stationary scale 2 scribed with marks corresponding to slit width; a sliding scale 6 capable of being driven by the wavelength drive 8 and scribed with marks corresponding to the spectral bandwidth, the two scales being juxtaposed, and the two sets of marks corresponding; and a moving indicator 15 having a reference line 14 overlying the two scales and capable of being driven by the slit drive 16 over the two scales to so produce slit width and spectral bandwidth readings. The scales may be calibrated logarithmically.
Patent GB-1300164-A (GB)
Title: Improvements relating to electric discharge lamps
Inventor: LARK GORDON TREMAYNE KINGSLEY
IPC: H05B41/46
Filed: 1970-03-20
Abstract: 1300164 Supply systems for discharge lamps TRANSTAR Ltd 19 April 1971 [20 March 1970] 13643/70 Heading H2H A system for supplying a fluorescent lamp 1 having filamentary electrodes 2, 3 comprises a ballast 6 having two windings 7, 16 electromagnetically coupled, the main winding 6 being connected in one of the supply conductors 4 whilst the winding 16 is connected in series with a starter switch 17 so as to by-pass the discharge path of the lamp 1, the windings 7, 16 being so connected that the voltage dropped across the windings are in phase. Thus, during starting the ballast has a higher impedance than when the lamp is running and the ballast does not overheat should the lamp fail to strike.
Patent GB-351654-A (GB)
Title: Improvements in looms for weaving royal axminster or moquette carpets and other tufted pile fabrics
IPC: D03D39/02
Filed: 1930-05-03
Abstract: 351,654. Beat-up mechanism for Axminster looms. PLATT BROS. & CO., Ltd., Hartford Works, Oldham, Lancashire, and BASSINDALE, I. B., Cleveland, Oldham Road, Grasscroft, Yorkshire. Ma,y 3, 1930, No. 13659. [Classes 142 (ii) and 142 (iii).] In looms for weaving Royal Axminster or moquette carpets &c. the weft threads inserted by three or more needles are beaten up by two reeds o, p which are both mounted on a sley r rocked by adjustable cam-controlled lever mechanism g, 6, 8. The reed p is permanently in engagement with the warp threads whilst the reed o is moved up and down in the sley by cam-controlled lever mechanism 20 so that the teeth are lowered at times as shown in Fig. 4 to clear the comb g, which turns up the tufts inserted between the warp threads from the usual tube frame. The cam 15 for actuating the sley r is formed with two projections 12, 13 of different heights so as to give two beat-up movements of different extents. The reed p comprises a bar formed with dents secured between a lathe stock r and a cap s, the part r comprising a frame with a tubular part having end bearings and an arm connected by a stud 5 to the link 6, whilst the reed o comprises teeth on a plate slotted to receive studs on the stock r whereby it is guided in its vertical movement. After the usual knives h, i have cut off the last inserted tufts, needles k, l, m insert two or more loops of weft in front of the front reed o and one or more loops between the reeds o, p, which are then given a short forward movement by means of the cam projection 13 so that the front reed beats up the weft threads in front of it. The reeds then return a short distance, tuft yarns are inserted from a tube frame between the beaten-up wefts and those between the reeds o, p, and next the reeds o, p are moved to an extreme forward position, the reed o being lowered and the reed p beating up the wefts laid in front of it as well as those which were laid in front of the reed o. whereby the inserted tufts are held firmly whilst the tube frame f is withdrawn.
Patent GB-825668-A (GB)
Title: Improved resilient mounting
Inventor: ROBERTS EDWIN
IPC: F16F1/387
Filed: 1957-04-30
Abstract: 825,668. Resilient mountings. CLAYTONWRIGHT Ltd., H. Feb. 27, 1958 [April 30, 1957], No, 13665/57. Class 108(3) Cavities 18, 19 are provided at circumferentially spaced intervals in the rubber 17 of a rubber-bush type mounting to accommodate flow of the rubber on axial deflection. Each cavity 18 is in the same radial plane as the corresponding cavity 19.
Patent GB-683593-A (GB)
Title: The manufacture of substituted iminazoles
Inventor: HEILBRON IAN MORRIS
IPC: C07D473/06
Filed: 1948-08-18
Abstract: Compounds of formula (III) or (IV) <FORM:0683593/IV (b)/1> <FORM:0683593/IV (b)/2> are made by reacting compounds of formula (V) or (VI) <FORM:0683593/IV (b)/3> <FORM:0683593/IV (b)/4> with an isocyanate, an isothiocyanate, a urea, a thiourea or N-substituted derivative thereof.  The reaction is described in Specification 683,523 together with the use of the products in the preparation of purins.  In the above formul  R1, R2, R3 and R4 may be the same or different and represent hydrogen, alkyl, aryl or aralkyl groups which may contain inert substituents, X is O or S and R is hydrogen or preferably a hydrocarbon radicle, e.g. ethyl.  Specification 683,594 also is referred to.
Patent GB-1244813-A (GB)
Title: Improvements in or relating to television apparatus
Inventor: RUMLAND RAINER
IPC: H04N3/22
Filed: 1970-03-20
Abstract: 1,244,813. Television. GRUNDIG E.M.V. ELEKTRO - MECHANISCHE VERSUCHSANSTALT INH. MAX GRUNDIG. 20 March, 1970 [20 March, 1969], No. 13701/70. Heading H4F. Television apparatus for the enlarged reproduction on the screen 8 of a receiver of a selected portion 22 of the picture picked up by a television camera 1, comprises a crossed-lines signal generator 9 (synchronized by signals from the vertical and horizontal deflection generators 4 and 5) the output of which produces lines L and L<SP>1</SP> on screen 8 whose positions are adjustable by varying the control voltages determined by potentiometers 12 and 13. With the apparatus in the condition shown i.e. switch 20 open and thus relay coil 19 inoperative, potentiometers 12 and 13 (which are at the receiving position) are adjusted to set the crossed lines at the centre of the picture portion desired for enlargement. Switch 20 is then closed, energizing relay coil 19 which closes relay contacts 14-17 and opens relay contact 18. As a result three operations are simultaneously effected (1) the control voltages from potentiometers 13 and 12 are fed to vertical and horizontal deflection generators 4 and 5 to cause appropriate displacement of the raster scanned by the electron beam of the pick-up tube 1 so that the selected picture portion is shifted to the centre of the receiver screen 8; (2) the amplitudes of the beam deflections produced by generators 4 and 5 are reduced by the closing of relay contacts 14, 16, thus producing the desired enlargement of the selected picture portion on the receiver screen, Fig. 2; and (3) the opening of contact 18 removes from amplifier 6 the signal produced by generator 9 so that the crossed-lines are no longer visible. Generator 9 may be arranged to produce further signals representing lines bordering the portion of the picture selected for enlargement.
Patent GB-662255-A (GB)
Title: Improvements in or relating to the control of polyphase slip ring induction motors
IPC: H02K17/30
Filed: 1949-05-23
Abstract: 662,255. Control of A.C. motors. IGRANIC ELECTRIC CO., Ltd. May 23, 1949. [May 22, 1948] No. 13707/49. Class 38 (iii). A control system for a polyphase induction motor of the slip ring type comprises a circuit for the motor secondary winding including capacitive and inductive reactance and a transformer winding to be supplied by one phase of a polyphase supply and having a fixed tapping to which one of the terminals of the primary winding is to be connected and means whereby another of the terminals of the motor primary winding may be connected to the winding, the point of connection being adjustable along the winding, so as to provide variable voltage unbalance of the polyphase supply to the motor primary winding. The stator winding of an induction motor M is connected to three-phase supply-lines L1, L2, L3, through main switch 1 and reversing switches 2 or 3. Voltage unbalance of the motor primary excitation is effected by means of an auto-transformer 6 which is connected for positive driving or plugging operation by closure of switches 1, 2, 5, and for overhauling operation by closure of contacts 1, 3, 5. The motor secondary circuit is subjected to the combined influence of capacitors C1, C2, C3, and inductors R4 in order to afford speedtorque characteristics which are suitable for various applications, reference being made to obtaining stable low speed operation and high initial torque. Figs. 2, 3, 4 (not shown) respectively illustrate the curves obtained when resistor R2 above is varied, when the voltage unbalance of the motor primary winding is solely adjusted, and when the tuning of the motor secondary circuit is the only variable. Speciflcation 583,820 is referred to.
Patent GB-769159-A (GB)
Title: Improvements in or relating to cinematograph cameras
IPC: G03B19/18
Filed: 1955-05-12
Abstract: 769,159. Kinematograph cameras. PAILLARD SOC. ANON. May 12, 1955 [June 16, 1954], No. 13716/55. Class 97(1) A camera comprises an objective carrier, particularly a turret, and a stationary reflex viewing device comprising a prism 9, shown in plan, placed between objective and shutter, the prism being mounted in a frame 10 pivotally mounted on the camera casing so that the prism can be swung forwardly for cleaning the rear surface 11. The prism contains an inclined semi-reflecting surface by which an image is formed on the upper, diffusing, surface of the prism and observed by a viewfinder optical system. The pivot 12 is carried on a plate 14 secured to the camera body by screws 17 engaging holes slotted to provide lateral adjustment. Two screws 18, one above the other, provide an adjustment of the inclination of the pivot axis. A spring 21 retains the frame 10 in the operative position.
Patent GB-143547-A (GB)
Title: Improvements in machines for the manufacture of short-shank nails
IPC: B21G3/00
Filed: 1920-05-19
Abstract: 143,547. Kirschke, O. Aug. 17, 1917, [Convention date]. Forging nails.-In a machine for making nails from wire of diameter appropriate to that of the head to be formed, the shanks are reduced by two pairs of lateral swaging dies acting in succession, during the time that the upsetting and pointing dies are in operation, and moving in such a direction that the extension produced in the wire is wholly in opposition to the line of feed. Dies e, e<1>, Fig. 3, act on the sides of the wire while held by dies w, w<1>, and then these move in, Fig. 4, so that the wire can only extend longitudinally. To prevent this extension from affecting the already compressed wire which is being cut off and headed by dies n, the dies e, e<1> w, w<1> are pivoted at b, b<1>, l, l<1> so that they move rearwards during their approach. The levers c, d have toothed engagement, and are actuated by one lever f and spring and the levers k, k' have stops t, t<1> to prevent the dies w, w<1> from opening farther than is shown in Fig. 3.
Patent GB-766578-A (GB)
Title: Process for the electrochemical oxidation of ortho-toluene sulphonamide to ortho-benzoyl-sulphonimide
IPC: C07D275/06
Filed: 1954-05-11
Abstract: 766,578. Electrochemical oxidation. FARBWERKE HOECHST AKT.-GES. VORM MEISTER LUCIUS & BRUNING. May 11, 1954 [May 11, 1953], No. 13788/54. Class 41. Ortho-benzoyl-sulphonimide is prepared by the electrochemical oxidation of ortho-toluenesulphonamide, between electrodes of which at least the anode is of lead or lead alloy, and in an alkaline electrolyte containing a compound of antimony. The antimony compound is present in a concentration of 300-1000 milligrams per litre of electrolyte. Specification 691,187 is referred to.
Patent GB-246004-A (GB)
Title: Improvements in brackets for supporting horns on motor vehicles
IPC: B60Q5/00
Filed: 1925-05-26
Abstract: 246,004. White, A. E., (Sparks-Withing- ton Co.). May 26, 1925. Brackets, adjusting and securing. - A bracket for supporting a warning horn upon the engine of a motor vehicle comprises two sheet metal strips 1, 2 slidably connected by a bolt 11 and each formed with an attaching lug 5, the shorter strip 2 having an upwardly bent horn-attaching flange 13, the arrangement being such that the flange 13 is always positioned between the ends of the longer strip 1. A pair of spring plates 14 are attached to each side of the flange 13, a distance piece 18 and a part of the horn structure being clamped between them by bolts passed through holes 19. Specification 194,388 is referred to.
Patent GB-198889-A (GB)
Title: Improvements in clips for stentering machines
IPC: D06C3/04
Filed: 1922-05-16
Abstract: 198,889. Whitley, A. A. May 16, 1922. Tentering.-Relates to improvements in tentering-clips of the kind shown in Figs. 10, 11, and 12 of Specification 15312/09. One of the arms u constituting the lever of the gauge-tongues is arranged outwards of one of the arms B<1> of the upper jaw connection with its axis, a campiece J hinged to the upper jaw B, and a spring H for pressing the cam against an abutment being arranged so that the pressure of the spring on the upper jaw does not exert objectionable pressure on the gauge-tongues. In the form shown in Figs. 1 and 3, only one vertical arm C is employed, and a hinged abutment N on the arm C is adapted to be engaged by a projection E on the arm a. A stud K is provided on the arm C to cause the gauge-tongues to be raised when the clip is opened. The spring H is arranged around a pivoted spindle L which is slotted to receive a shoe h and a curved midfeather M of the cam piece J. In the form shown in Fig. 7, two upright arms C are provided and a snug N<2> on the upper jaw is adapted to be engaged by snug E<2> on the arm a of the gaugetongues. The gauge-tongues are raised when the clip is opened by a snug K<2> on the arm of the upper jaw. A snug P on the top of the clip bears against a plate Q to take the thrust of the clipopeners.
Patent GB-458485-A (GB)
Title: Improvements in or relating to machines for winding yarn and the like
IPC: B65H54/14
Filed: 1935-06-18
Abstract: 458,485. Winding yarns &c. MARSDEN, C., 5, Camp, Ahmedabad, Bombay, India. June 18, 1935, No. 13869/36. Divided out of 458,473. [Class 120 (ii)] A machine for winding yarn &c. comprises a winding spindle 13, Figs 1a and 2, a worm 17 fixed thereon, a traverse rod 40 and a thread guide reciprocated thereby to traverse the yam longitudinally of the spindle, a progression wheel carried by the rod 40 for effecting a step-by-step displacement of the thread guide longitudinally of the spindle in accordance with the growth of the package and a worm wheel 31 engaging and driven by the worm 40 and formed with a cam track for reciprocating the rod 40, the feed and return portions 32, 33 of the track being of different lengths. As shown, the track 32, 33 is formed by a double-sided groove in the face of the wheel 31 engaging a cam follower 34 on one arm 35 of a bell-crank lever, the other arm 36 of which is coupled by a link 38 to the traverse rod. The arms and pivot of the bell-crank lever lie, as viewed in plan, Fig. 1a, between the traverse rod and the winding spindle. The worm wheel rotates on an antifriction bearing carried on a post 81 secured to the frame 10. Specifications 24611/08, [Class 120], 458,473, and 458,484 are referred to.
Patent GB-799097-A (GB)
Title: Improvements in sealing conductors through glass-walled electron discharge devices
IPC: H01J9/32
Filed: 1955-05-13
Abstract: 799,097. Glass-metal seals. PATELHOLD PATENTVERWERTUNGS- & ELEKTROHOLDING AKT.-GES. May 13, 1955 [May 15, 1954], No. 13884/55. Class 36. In sealing a conductor into the glass wall of an electric discharge device, a first part 1 of the conductor L is glazed, a second part 2 adjoining the first part is first oxidized and then glazed, and both glazed parts are sealed through the wall with the second part nearer the outside of the device.
Patent GB-997901-A (GB)
Title: Improvements in or relating to a compacting press
IPC: B22F3/03
Filed: 1962-04-10
Abstract: 997,901. Compression-moulding powders. E. W. BLISS CO. April 10, 1962 [April 12, 1961], No. 13892/62. Heading B5A. A compacting press for metal powders comprises a stationary die table 10 carrying a reciprocable die 44, 46, 52 having a bore 60 for receiving the powder which is compacted against the surface 66 of an ejector plunger 62 by a crank driven punch 78, the die being permitted to float with the punch during a compacting operation by the downward movement of an hydraulic cylinder 94 secured to the punch plate 82 and receiving a piston 104 to which are secured two collapsible telescopic air cylinders 112, 114, the upper parts 116 of which move downwardly with the die to compress the air in the cylinders. When the punch 78 moves upwardly at the end of the compacting operation the ejector plunger 62 and the air cylinders 112, 114 together with the die are moved upwardly to their original positions. A mandrel 68 extends axially through the plunger 62 and the bore 60, and lubricant is admitted to the space between the mandrel 68 and the plunger 62 when the latter is at the top of its stroke, and is emitted through radial holes at the upper end of the plunger 62 as the ejector descends to lubricate the bore 60 and the mandrel 68. The compacted slug is pushed off the die table 30, after being ejected from the bore, by a powder feed mechanism as it moves to recharge the bore 60.
Patent GB-1064977-A (GB)
Title: Improvements in or relating to evaluating systems for analytical mechanisms employing differential detectors
IPC: G01N30/86
Filed: 1964-04-03
Abstract: 1,064,977. Selective signalling. SCHOLVENCHEMIE A.G. April 3, 1964 [April 3; 1963], No. 13917/64. Heading G4H.  In a gas chromatography system the electric output signal is attenuated by a different factor as each constituent passes through whereby the areas resulting under each peak can be interpreted on a common scale. The different attenuating factors are determined empirically, and the areas are measured by a voltage-tofrequency converter and a counter. The attenuators can be switched either manually, as each constituent passes, or automatically by a minimum signal detector.