baber/WOPTO huggingface dataset:
Patent GB-1417087-A (GB)
Title: Polyisocyanates
IPC: C08G18/00
Filed: 1973-05-29
Abstract: 1417087 Methylene bridged polyphenyl polyisocyanates IMPERIAL CHEMICAL INDUSTRIES Ltd 3 May 1974 [29 May 1973] 25370/73 Heading C2C A multiplicity of isocyanate compositions are prepared from a polyisocyanate mixture of methylene bridged polyphenyl polyisocyanates containing 40 to 85% by weight of diphenylmethane diisocyanates and made by phosgenation of a mixture of polyamines obtained by condensation of aniline and formaldehyde, by (a) distilling the polyisocyanate mixture and removing 5 to 70% by weight of the diisocyanate as volatile overhead (Product II) leaving a residue of methylene bridged polyphenyl polyisocyanates (Product I) and (b) submitting Product II to crystallization whereby there is obtained a crystallizate of 4,4<SP>1</SP>-diphenylmethane diisocyanate (Product III) and a mother liquor (Product IV) comprising 10 to 55% by weight of 2,4<SP>1</SP>-diphenylmethane diisocyanate and 90 to 45% by weight of 4,4<SP>1</SP>-diphenylmethane diisocyanate.
Patent GB-912875-A (GB)
Title: Electric power supply systems for motor vehicles
IPC: H02J7/24
Filed: 1961-07-13
Abstract: 912,875. Automatic voltage control. GENERAL MOTORS CORPORATION. July 13, 1961 [Aug. 26, 1960], No. 25388/61. Class 38 (4). The output of an engine-driven alternator, having a field winding 12 and three-phase stator 14, is rectified by a full-wave rectifier 16 and fed to a battery 26, an inductive load 30 through a switch 33 and a resistive load 28 through a switch 32. The voltage across the battery is maintained constant by controlling the field excitation by a switched series regulating transistor 42 responsive to the difference between a reference voltage across a Zener diode 72 and the battery voltage. The alternator is switched on by energizing a coil 120 of a relay 118 from the battery through a switch 110 so as to close contacts 116. A coil 98 of a relay 100 is energized from the alternator when contacts 116 are closed and an indicator lamp 106 goes out when contacts 102 open at a predetermined voltage. To prevent damage to the transistor 42 the induced voltage of the coil 98 is absorbed by a diode 134 and the induced voltage of the inductive load 30 is absorbed by a condenser 124. In a modification, the induced voltages are absorbed by a condenser connected between a point 92 and earth.
Patent GB-1162786-A (GB)
Title: Treatment of Inorganic Pigment
IPC: C09C3/04
Filed: 1968-05-28
Abstract: 1,162,786. Grinding inorganic substances; grinding aids. PPG INDUSTRIES Inc. 28 May, 1968 [29 May, 1967], No. 25414/68. Heading B2A. [Also in Division C1] An inorganic pigment is subjected to at least one fluid energy milling using steam followed by at least one fluid energy milling using an inert non-condensable liquid free gas. In the first stage, the steam may be fed at a pressure of 50-350 psig, temperature of up to 600C, e.g. 430 or 550F, and rate of 250- 8000 lbs/hr, and the pigment may be fed at 400-5000 lbs/hr. In the second stage, the gas may be fed at a pressure of 50-1000 psig, temperature of 20-70C, and rate of 60-1000 cc/min, and the pigment may be fed at 50- 3500 lbs/hr. The gas may be air, N 2 , CO 2 , He, Ar, Kr, Ne, or Xe. During milling, 0.05-5 wt% of glycerol, pentaerythritol, trimethylolpropane, oleic or stearic acid, or triethanolanic may be introduced. The pigment is preferably TiO 2 , anatase or rutile, prepared by the halide or sulphate process, and may be coated with a hydrous oxide of Al, Ti and/or Si (.01-15%) or of Mg, Zr, Sn, Zn, or Ce (.01-5%). Also exemplified are SiO 2 , ZnO, Sb oxide, and ZnS, and referred to are oxides of Al, As, Fe, Cr, Sr, Sn, Zr, Pb and Hg, CaS, FeS, CaCO 3 , Mg silicate, chromates, and carbon black.
Patent GB-255390-A (GB)
Abstract: 255,390. National Cash Register Co., Ltd., (National Cash Register Co.). April 12, 1926. Cash registers with item-printing mechanism. -In machines of the key set and operated type having independently-operated printing mechanism, means are provided for compelling two cycles of operation of the printing-mechanism in order to print two vouchers at each registration. The invention is illustrated as applied to a machine of the kind described in Specifications 10213/93, 142,436, and 178,417. Depression of the amount keys effects in the usual manner a half-rotation of the main shaft 50 which is then locked by an arm 33 swung in below the coupler 32 by connection with a shaft 145 rocked through lever 126 and pin 125 by a lever 122 engaged with the grooved cam 120 on the main shaft. The clockwise displacement of this lever 122 is conveved to a co-axial lever 132 the arms of which respectively engage a positioning detent 136 and a holding projection 140 carried by the printing-shaft 74 and support at 151 a quartrefoil member 150. One arm of lever 126 serves as an additional lock for the shaft 74 by engaging a square pin 129 carried by it. When the item has been set up and the lever 122 rocked clockwise by cam 120 the member 150 is carried into the path of a cam 149 on the shaft 74, The latter is then rotated by a crank handle or motor but before the cam 149 can engage the member, the voucher-feeding sector 105 is rocked by the driving cams 107, 108, and this through slot 158, pawl-carrying arm 156 and ratchet 153 steps the member counterclockwise to place its leaves out of the sweep of the cam 149. In the second cycle of rotation of shaft 74. however, the further stepping of the ratchet renders the member effective to be engaged by the cam so that the lever 122 is restored to home position and the main shaft 50 thus allowed to complete its rotation and the locking arms 128, 139 to exercise their stopping and holding functions with respect to the projections 129, 140. In the modified construction shown in Fig. 8, a spring- controlled bell-crank lever 170 takes the place of the quatrefoil member 150 and the lever 168, pinned to lever 122, is positively held, when displaced, by a detent 164 engaging a flat pin 166. Due to this restraint the first rotation of cam 171 on shaft 74 produces only an idle rocking of lever 170 but at the end of the rotation a cam 172 rocks a lever 174 to remove the detent 164 and so allow slight movement of lever 168 under the action of a light spring 176. When the cam 171 next comes .round therefore, it is effective through bell crank lever 170, to rock the levers 168 and 122 to home position and allow the main shaft and item keys to be restored.
Patent GB-256432-A (GB)
Title: Improvements in tobacco pipes
IPC: A24F1/22
Filed: 1925-10-13
Abstract: 256,432. Ely, R. E. V., and Ely, M. V. Oct. 13, 1925. Tobacco pipes.-A radial air inlet d in the stem a is con. trolled by an apertured plate e, preferably of metal, sliding in grooves in a plate f. The inlet d may be formed in the end of the mouthpiece adjacent to the stem, and may be controlled by an imperforate vulcanite or other plate sliding in an open dovetailed slot in the mouthpiece.
Patent GB-654161-A (GB)
Title: Improvements in and relating to amplitude limiters
IPC: H03G11/06
Filed: 1947-09-19
Abstract: 654,161. Limiters. BRITISH THOMSONHOUSTON CO., Ltd. Sept. 19, 1947, No. 25580. Convention date, Sept. 20, 1946. [Class 40 (vi)] In a frequency modulation receiver the input to the limiter 20, which is of the grid-leak bias type, is prevented from exceeding a predetermined value by means of a diode 18 connected across the anode circuit of the preceding amplifier and provided with a delay bias derived from the cathode resistance 10. The limiter 20 may alternatively comprise a further amplifying stage provided with a similar output limiting diode, Fig. 3 (not shown).
Patent GB-1426921-A (GB)
Title: Viewing device
IPC: G02B25/00
Filed: 1973-05-29
Abstract: 1426921 Viewers D M BENN 30 April 1974 [29 May 1973 25589/73 Heading G2J A viewer comprises a framework of moulded plastics having a lens-carrying panel 10A, spaced from a slide or film-carrying panel 10C by a control panel 10B, the three panels being joined by integral hinges 12, 14 which permit the panels 10A, 10C to be folded up from the plane of the panel 10B so that the slide or film may be viewed through the lens 40. U-shaped slots 16, 18 define extensions 20 of the panels 10A, 10C. These extensions are provided with upstanding beading 22 which is adapted to snap under adjacent edges of the slots 16, 18 defined by the central panel 10B. Means for mounting a slide or film are provided on the panel 10C. The means may include a mechanism for moving a film across an aperture 44.
Patent GB-891069-A (GB)
Title: Brake assembly mechanism
Inventor: AUSTIN LEONARD EDMOND
IPC: B60T1/00
Filed: 1960-07-22
Abstract: 891,069. Assembling brakes. BENDIX CORPORATION. July 22, 1960, No. 25678/60. Class 103 (1). [Also in Groups XXII and XXX] A method of fitting in a shoe brake 100 a hold-down spring 37 having relatively large diametered coils at its top end and a hook 77 at its opposite end for engagement with an anchor member eye 113 comprises the following steps: orientating the spring 37, inserting the spring 37 in the brake shoe web 98 or in the backing plate so that the large coils seat thereon, angularly moving the spring to allow positioning of the anchor member 114 in an opening in backing plate 101 or in the shoe web, inserting the anchor member therein, and angularly moving the stretched spring to interengage the spring hook 77 and the anchor member. In the machine shown, the springs 37 are fed from hopper 44 by escapement linkage 76 to a cup-shaped orientator 48, which turns the spring to face the desired direction; turning the starter switch causes fluid-pressure motor 32 to push a two-diametered mandrel 40 down into the orientator 48 to frictionally pick up the spring 37, a crank-arm 80 swinging to operate a switch 88 so that the mandrel and spring are withdrawn upwards, this motion in turn causing fluid-pressure motor 20 to move three-part frame 10, 12, 14 with its various attachments bodily to the left (dotted lines) alongside the brake shoe 100 and backing plate 101. Motor 32 next pushes most of the spring 37 through a hole in the brake shoe web 98 so that its large coils seat thereon and it is stretched somewhat; motor 52 rotates frame member 10 about its pivot 16, as shown in dotted lines, and motor 110 pushes the top part 111 of the anchor member 114 through the hole 116, after which the motor 52 retracts to swing the frame member 10 upright and simultaneously interengage the spring hook 77 to the anchor member eye 113. The motor 20 finally returns the frame to its original right-hand position. The orientator 48 includes two rollers 60, Fig. 4, rotatably mounted in a bearing member 62; a rectangular bar 64 with a notch 66 near one end is pivoted at 68 to angle-iron 70 fixed to the frame member 12 and is biased against the spring 37 by a spring 72. On movement of the frame to the left, the bar 64 slides in a notch 74 in the orientator 48, the notch 66 allowing a spring 37 to drop in; on its return stroke the bar 64 rotates the spring 37 frictionally until the spring hook 77 contacts a stop 79.
Patent GB-668344-A (GB)
Title: Improvements in or relating to jet propulsion nozzles
Inventor: GRIFFITH ALAN ARNOLD
IPC: F02K1/04
Filed: 1949-10-06
Abstract: 668,344. Jet propulsion plant. ROLLS-RO YCE, Ltd. Sept. 8, 1950. [Oct. 6, 1949] No. 25753/49. Class 110(iii). in a jet propulsion nozzle comprising a member 4 disposed coaxially within an outer wall 1 to define an annular outlet therebetween, the inner surface of the outer wall and the surface of the member are so shaped that the throat 5 of the nozzle is formed between the lip 2 of the outer wall and the surface of the member 4 and the normal to the throat at the lip makes an angle with the nozzle axis which is substantially the calculated angle of refraction for the design Mach number and intersects the nozzle axis downstream of the nozzle. The surface of the member 4 downstream of the throat is concave and converges to an apex which is located on the nozzle axis at a point upstream of the apex of the Mach cone 8 from the lip of the outer wall.
Patent GB-1080474-A (GB)
Title: Pot handling trailer
IPC: B22D41/12
Filed: 1966-06-09
Abstract: 1,080,474. Tipping vehicles; transporting special loads. E. S. KRESS. June 9, 1966 [July 15, 1965], No. 25835/66. Heading B7B. A vehicle for carrying a ladle P has a U- shaped cradle provided with inwardly-open channels 40 to receive the trunnions 41 of the ladle, the ladle being unloaded by the jacks 60 which tip the cradle about its stub shaft 45 connection with the frame 22. The ladle P is removed from the vehicle by lowering the frame 22 by collapsing the jacks 32 between the frame and the road wheel supports 26 until the ladle rests on the ground, the trunnions 41 then being freed from the cradle by releasing the jack-operated locking levers 55.
Patent GB-855167-A (GB)
Title: Purification of aqueous solutions of streptomycin and/or dihydrostreptomycin
Filed: 1958-08-12
Abstract: Streptidine is removed from aqueous solutions of streptomycin and/or dihydrostreptomycin containing it, by adding to said aqueous solutions a 2,6-dihalogenated -4-nitrophenol at a pH of 5,8 to 10,5 and especially 6,5 to 7,5 and removing the resulting precipitate by e.g. filtration.  The 2,6-dihalogenated-4-nitrophenol is preferably used in excess and may be 1,000% equivalent based on the streptidine content of the antibiotic solution.  The excess precipitant is removed from the streptidine-free antibiotic solution by acidifying to pH at least 2,5 to precipitate the 2,6-dihalogenated 4-nitro-phenol and then passing the filtrate over charcoal at pH 7,0. Adjustment of pH in the streptidine precipitation step is by means of alkali metal and alkaline earth metal oxides, hydroxides, carbonates or bicarbonates or by organic nitrogen bases e.g. triethylamine.  The time to effect precipitation is dependant upon the quantity of streptidine to be precipitated and the principal antibiotic and is generally 4 to 200 hours.  Specified precipitants are 2,6-dibromo-4-nitrophenol; 2,6-dichloro-4-nitro-phenol; 2,6-diiodo-4-nitrophenol and 2,6-difuoro-4-nitrophenol.
Patent GB-248666-A (GB)
Title: Improved supporting strut for display cards or stands, picture and the like frames and similar devices
IPC: G09F1/04
Filed: 1925-10-16
Abstract: 248,666. Hancock, Corfield, & Waller, Ltd., and Roebuck, A. Oct. 16, 1925. Card and like stands.-A supporting strut for a display card, picture &c. frame, &c., comprises a rectangular piece of cardboard b secured to the card, frame back &c. a by eyelets &c. g and provided with two cuts c sloping inwardly from the upper corners, the strut being scored along a line d joining the ends of the cuts. The strut is also scored along lines e extending longitudinally from the ends of the cuts to the lower edge. In use, the longitudinal edges are bent up to form two side wings f, the strut being then turned about the scoring d so that the upper ends of the wings f engage the fixed part of the strut to support the card, frame, &c. in an inclined position. A flexible cord h may be passed over the upper ends of the wings f to retain the strut in position.
Patent GB-159251-A (GB)
Title: Improvements relating to horizontal surface grinding machines
IPC: B24B41/02
Filed: 1919-10-22
Abstract: 159,251. Lumsden, T. Oct. 22, 1919. Spindle-mountings.-In a machine for grinding horizontal surfaces, the grinding-wheel spindle g. is mounted, preferably eccentrically, in a "ram" or member f, which can be rotated in a sliding bearing c and a fixed bearing k; the eccentric mounting facilitates the adjustment of the position of the grinding-wheel a relatively to the work beneath it. The parts e, k are fitted in the cylindrical bore of a cross rail b, which is vertically adjustable on the uprights at the sides of the machine. In a modification, the ends of the spindle g, are mounted in two separate short eccentrics f, which are rotated simultaneously.
Patent GB-826213-A (GB)
Title: Improvements in gas filters
Inventor: GOSS PETER ERNEST
IPC: B01D46/18
Filed: 1957-08-16
Abstract: 826,213. Gas filters. YOKES Ltd. Aug. 14, 1958 [Aug. 16, 1957], No. 26002/57. Class 8(2). The feed and take-up spools 4, 9 between which a gas filter web 20 extends across a gas duct are located downstream of the web and the take-up spool 11 is sited within a sealed casing 8, 16, 18 to which access is gained through a sliding door 17. In operation clean material is fed from the spool 4 over a guide roller 6 and between upper and lower channelshaped cross members 21 to 24 of the frame 1, guide rollers 11, 10 to the spool 9 having a sprocket wheel 12 driven by a motor 13. The margins of the stretched web are sealed to the frame between inwardly facing channels and the web is supported against the gas pressure by vertical bars 27, Fig. 3 (not shown) adjacent the downstream face. Prior to opening the door 17 to remove a spent spool a shutter 28 is drawn across the upstream side of the web.
Patent GB-1131115-A (GB)
Title: Improvements in or relating to transmission line and wave guide impedance matching arrangements
Inventor: WALDRON RICHARD ARTHUR
IPC: H01P5/02
Filed: 1966-06-13
Abstract: 1,131,115. Matching impedances. MARCONI CO. Ltd. 14 Feb., 1967 [13 June, 1966], No. 26222/66. Heading H1W. The sections between the steps of a binomially-stepped matching arrangement are tapered to effect a marginal reduction in overall reflection coefficient. As shown, the invention is applied to a strip line impedance-matching section S arranged between a coaxial-line conductor X and a YIG element YY forming the coupling element in a frequency-adjustable coupler. The tapering of sections A-B, B-C is non-linear and is a maximum at the centre of the sections. The variation in characteristic impedance of the sections is less than 10% and the reflection due to the tapering is less than the reduction in reflection effected thereby at the discontinuities. The line S forms the central conductor of a " sandwich " type line which is coupled to an adjacent sandwich line by the YIG element YY. The resonance frequency of the element is controlled by a variable magnetic field.
Patent GB-314252-A (GB)
Title: Improved method of and apparatus for making bread
IPC: A21C3/10
Filed: 1928-08-07
Abstract: 314,252. Blackledge, J. Aug. 7, 1928. Stream-cutting machines; rolling- machines. - Relates to machines wherein dough is passed through successive pairs of rollers to form a continuous sheet which is then trimmed at the edges by rotary cutters and divided by a transverse cutter; and consists in dividing the trimmed portion into bands of equal width which are then cut transversely and the cut pieces moulded. As shown, dough from a hopper H passes through pairs of rollers B, B', C, C', D, D', E, E<1>, to form a sheet which is trimmed and divided into bands by rotary cutters P carried by a shaft p'. A knife K, working through guides k<1>, is reciprocated through a cam k<5> and lever k<2> to sever the bands into pieces of appropriate length. The successive pairs of rollers are arranged closer together and are driven at higher speed. A band a<2> carries the dough beneath the cutters P. E. and delivers the cut pieces to a continuous moulding machine comprising a succession of troughs each fitted with a band and presser-board, as described in Specification 192,103; the successive troughs are aligned, or each succeeding trough may be disposed at rightangles to the preceding one.
Patent GB-1140517-A (GB)
Title: Isolation of tetracycline from a fermentation broth
IPC: A61K31/65
Filed: 1966-06-14
Abstract: 1,140,517. Purification of tetracycline. A.P. DA LUZ. 14 June, 1966 [30 July, 1965], No. 26490/66. Heading C2A. Tetracycline is recovered from a tetracycline containing broth by acidifying the broth to pH 1À5 to 3À0 e.g. with sulphuric acid, clarifying and adjusting the solution to pH 8À8 to 9À1 with NaOH, separating solids and suspending the solids (A) in a water-immiscible solvent oxygencontaining solvent e.g. n-butanol, adding NaCl and H 2 SO 4  to pH 1À5 to 2À5, removing solids and extracting the residual liquid with water at pH 10, adjusting to pH 1À5 to 2À5 and treating with C, adding oxalic acid and/or potassium ferrocyanide, removing solids and adjusting to pH 3À8 to 4À3 in order to precipitate tetracycline. Alternatively, the solids (A) are dissolved in sulphuric acid at pH 1À5 to 2À0, clarified, treated with C and then oxalic acid, and/or potassium ferrocyanide, again clarified, a salt of ethylene diamine tetraacetic acid added and the pH adjusted to 3À8 to 4À1 to precipitate the tetracycline.
Patent GB-1432318-A (GB)
Title: Apparatus for determining the state of charge of accumulator
IPC: H02J7/00
Filed: 1974-06-14
Abstract: 1432318 Indicating battery state of charge VDO ADOLF SCHINDLING AG 14 June 1974 [4 July 1973] 26553/74 Heading G1U A battery state of charge indicator of the type in which the voltage across a resistor 4 in the  battery circuit is converted into a corresponding frequency-significant pulse train whose pulses are counted 27 positively or negatively in accordance with the polarity of the voltage across the resistor 4, is characterized in that the voltage-to-frequency converter comprises a bridge-type switch 5 which transmits either the voltage across resistor 4, or its inverse, to an integrator 7, and a comparator 21 which produces an output whenever the integrator output falls outside a band established by two reference voltages applied to differential amplifiers 19, 20, each output from the comparator reversing the state of a trigger 24 which controls the switch 5. Thus, if, for example, the voltage across resistor remains constant the integrator output will be a triangular waveform oscillating at a frequency proportional to the magnitude of the voltage across resistor 4 between the levels set by the reference voltages applied to the differential amplifiers 19,20. Each output pulse from the comparator, in addition to reversing the trigger 24, is counted by the counter 27 and its count is displayed on a meter. The polarity of the voltage across resistor 4 is detected by an Exclusive Or gate 30 which receives the output of the switch 5 and the trigger 24, and which controls firstly the direction of counting, and secondly, via an FET 17, the time constant of the integrator to compensate for charging inefficiency. The arrangement also includes means 22e, 22b, which modify the reference voltages applied to the differential amplifiers 19, 20, so that large discharge currents (which cause a larger proportional reduction in the state of charge of the battery than low currents) do produce proportionally more pulses for counting.