baber/WOPTO huggingface dataset:
Patent GB-908664-A (GB)
Title: Improvements relating to measuring apparatus
Inventor: WILLIAMSON DAVID THEODORE NELS
IPC: G01B21/06
Filed: 1960-03-11
Abstract: 908,664. Measuring relative movement photo-electrically. FERRANTI Ltd. March 7, 1961 [March 11, 1960], No. 8585/60. Addition to 810,478. Class 40 (3). Apparatus for deriving an indication of the relative movement between two members comprises means for setting up a cyclic wave pattern which moves with one member relative to four detectors on the other member. First and second detectors are at points where the wave pattern is in quadrature and the first and third where the pattern is in antiphase. The detector feeds the coils of a synchronous motor so that the angular position of the rotor corresponds to the relative displacement of the members. An optical fringe system 10, is set up by gratings on the two members and viewed by photo-cells 21-24. The difference in output from cells 21 and 23, and 22 and 24 is derived by push-pull amplifiers 15, 16 respectively and are applied to the coils 31, 32 and 35, 36 of a synchronous motor 33. As the fringe system moves relative to cells 21-24, the differences vary in quadrature and armature 34 rotates to take up a position representing the position of the fringe system which in turn represents the relative position of the members. To make the current in the coils oscillate about zero, auxiliiary coils are wound close to them and energized from a D.C. source such that the effect of the D.C. component in the coils is eliminated. A modification, Figs. 3 and 4 (not shown), includes an extra pushpull amplifier stage and the junction coils 31, 32 and 35, 36 are earthed, the coils being connected as the collector loads of the transistor push-pull output. The need for D.C. elimination is thus avoided.
Patent GB-1457042-A (GB)
Title: Preparation of nylon-6 as shaped articles of low oligomer content
IPC: C08G69/16
Filed: 1974-02-26
Abstract: 1457042 Continuous caprolactam polymerization ALLIED CHEMICAL CORP 26 Feb 1974 [21 March 1973] 8646/74 Heading C3R In a process for the production of shaped articles of polycaproamide from molten anhydrous nascent polymer which comprises in sequence: (a) continuously polymerizing caprolactam in a hydrolyser at superatmospheric pressure in the presence of water and a chain terminator to form a prepolymer melt; (b) continuously removing most of the water and water-extractables from such melt; (c) completing polymerization by effecting polycondensation; (d) continuously extruding the melt; and finally (e) cooling the extruded polymer; in step (a) (i) the lactam is fed continuously into a vertical multi-stage hydrolyser reactor under pressure with baffles between each stage disposed to prevent substantial back-mixing, (ii) a controlled temperature gradient is continuously maintained from top to bottom of the reactor, ranging from 200 to 240 C. at the top to 245 to 275 C. at the bottom with no more than 25 C. difference between successive stages, and (iii) the temperature is maintained substantially uniform within each stage by mixing to achieve an impeller Reynolds No. of 250 to 200,000, while (iv) the so formed prepolymer melt is continuously removed from the hydrolyser reaction to form, after step (e), shaped articles with a water-extractable content below 3À5% and oligomer content below 2À5%. In the preferred operation temperature at the top of the reactor is in the range 210 to 235 C. and at the bottom 250 to 270 C., with temperature differences of no more than 25 C. between the first and second stages and no more than 10 C. between subsequent successive stages to give a prepolymer at the end of stage (a) of viscosity 50 to 200 cp. Other preferred embodiments are that in step (b) removal of most of the water is effected by exposure to vacuum in a vessel providing a large surface area to volume ratio with a residence time of about 10 minutes, and that in step (c) the melt is then continuously transferred to a surface removal device providing a surface area to volume ratio sufficient to promote completion of polymerization by polycondensation and permit evaporation of residual amounts of vaporizable material, step (c) being effected at 225 to 300 C. with a residence time above 1 hour. The Fig. (not shown) shows a suitable device for use in step (a) which is designed for use in the coupled polymerization-spinning process of Specification 1,222,803.
Patent GB-1375438-A (GB)
IPC: B22F5/00
Filed: 1972-02-24
Abstract: 1375438 Nickel electrodes SHERRITT GORDON MINES Ltd 24 Feb 1972 8708/72 Heading H1B [Also in Division C7]  A self-supporting porous electrode plate is formed by depositing a layer of a viscous slurry of nickel powder on a carrier, drying the slurry and passing the layer through embossing rollers to form a network of densified lines of compressed powder and finally sintering the layer. Individual plates are cut from the resulting strip which may have the form shown in the figure.
Patent GB-1260842-A (GB)
Title: Improvements in or relating to beverage dispensing systems
Inventor: BEAUMONT HAROLD
IPC: B67D1/10
Filed: 1968-02-23
Abstract: 1,260,842. Valves. PORTER LANCASTRIAN Ltd. 24 Feb., 1969 [23 Feb., 1968], No. 8809/68. Heading F2V. A beverage dispensing system comprises a valve 68 opened by the beverage under pressure from a pump 10 acting on a piston 58, and closed by a spring 70. The beverage passes through a passageway 38, 48 to act on the piston and when the valve is opened, flows past an adjustable throttle valve 52 through a restricted passageway 74, past the valve 68 to an outlet 44. The piston 58 can be replaced by a diaphragm. In Fig. 2 (not shown), the pressure of the beverage acts upon a diaphragm (16) in an intermediate chamber (12), to force a liquid, e.g. water, to act on a diaphragm (24) in a tap (15) and open a valve (25), the passageway (14) between the chamber (12) and tap (15) being of restricted cross-section. The diaphragms (16) and (24) can be replaced by pistons. Alternatively, the diaphragm (16) in the chamber (12) can be dispensed with and the beverage can act on the chamber 24.
Patent GB-293339-A (GB)
Title: Improvements in or relating to straps for batons, hand bags and other analogous articles
IPC: F41B15/02
Filed: 1927-04-01
Abstract: 293,339. Lamb, T. S. April 1, 1927. Drum-sticks. -Straps by which batons a, Fig. 2, drum-sticks and other articles may be attached to the wrist comprise a double or looped strap f fixedly at. tached at one or both ends to the article in such a manner that the parts of the strap are prevented from relative sliding movement, with one or more keepers h, each in the form of a band surrounding the two parts of the strap, at least one of the keepers being slidable along the strap to secure it to the wrist, e.g. as shown in Fig. 2.
Patent GB-1070943-A (GB)
Title: 13-alkylgonanes and 13-alkyl-d-homogonanes
Inventor: HUGHES GORDON ALAN
IPC: C07J1/00
Filed: 1964-03-03
Abstract: In esterification (including transesterification) processes in which a metal or a metal compound is used as a catalyst, the catalyst is separated from the esterification product by treating the product with activated carbon at a temperature not exceeding 200 DEG  C. Part or all of any unused alcohol may be separated from the esterification product before the treatment with carbon. Also, the catalyst may first be converted into a different form, e.g. by precipitating a titanium or zirconium compound by means of lime.  The process is particularly applicable to the treatment of products obtained by esterifying phythalic anhydride with an alcohol or mixture of alcohols containing 4-14 carbon atoms produced by the "OXO" process, and comparative experimental results are given of the esterification of phthalic anhydride with iso-octanol (produced by the "OXO" process) in the presence of the titanium tetra-alkoxide of iso-octanol as a catalyst.  A number of other metals which may constitute the catalyst or from which the catalyst may be derived are specified.ALSO:The invention comprises compounds of formula <FORM:1070943/C2/1> wherein R1 is a C2-4 n-alkyl group, Y is a carbonyl, ketalized carbonyl, hydroxymethylene or acryloxymethylene group or a group -CR2OR- wherein R2 is an alkyl, alkenyl or alkynyl group transto R1 and -OR ia s hydroxy or acyloxy group cisto R1, Q is a methylene or ethylene group, the hydrogen atoms at the 14, 8 and 9 positions are transanti-, transwith respect to the group R1 and the hydrogen atom at the 10-position is antito that at the 9-position, including racemates of the 13b - and 13a -enantiomers, and their preparation by (a) treatment of a 3-ketone with a mixture of lithium/aluminium/hydride and aluminium chloride, (b) treatment of a 3-thioketal with deactivated Raney nickel or with an alkali metal or alkaline earth metal in liquid ammonia, (c) treatment of a 3-keto, hydroxy, alkoxy, acyloxy, chloro- or bromo-compound with an alkali or alkaline earth metal in liquid ammonia or an aliphatic primary amine, or with lithium aluminium hydride alone or in the presence of aluminium chloride, (d) oxidation, reduction, ketalization, esterification or hydrolysis of the group Y, (e) reaction of a carbonyl group Y with an organometallic reagent, or (f) reduction of the 4,5 double bond.  3-Thioketal starting materials are prepared by reaction of a 3-ketone with a thiol or dithiol in the presence of zinc chloride or boron trifluoride etherate.  (\sB) 3 - Acetoxy - 13b , 17a  - diethyl - gon - 4-en-17b -ol is prepared by reduction of the corresponding 3-ketone with lithium aluminium hydride to form the 3-ol, followed by acylation.  The compounds of the invention have anabolic, progestational and anti-estrogenic activity and may be used in pharmaceutical compositions in combination with a carrier, for example, in forms suitable for oral, parenteral or rectal administration.
Patent GB-1383132-A (GB)
Title: Touch actuated electronic switch
IPC: H03K17/945
Filed: 1973-02-23
Abstract: 1383132 Electronic touch switches MAGIC DOT Inc 23 Feb 1973 [17 March 1972] 9065/73 Heading G1N In a capacitor plate electronic touch switch, the switching circuit is substantially isolated from earth ground so that the entire switching circuit and plate oscillates at power frequency with respect to ground. This oscillating voltage across the body capacity provides an input signal when the plate is touched. As shown, Fig.1, a two-stage switching amplifier 12, 30 is inter-connected by an integrator circuit 48, 50 and energized through a transformer and rectifier 62, 78. The circuit earths 26 are isolated from earth ground 70 and the transformer connections "poled" so that the touch-plate will be 180 degrees out-of-phase with any voltage induced in the touching body. Alternatively a power frequency signal may be injected into the D.C. supply to the switching circuit through a resistor (150), Fig.5 (not shown) with a mains supply, or (102), Fig.3 (not shown) with a battery supply, or a resistive potential divider may be used instead of a transformer, Fig.4 (not shown) with the lower arm (124) acting as an "isolating" resistor. Detailed Additions, Fig.5 (not shown). A large resistor (1 megohm, 152) connected to earth ground is stated to improve noise immunity, and an H.F. by-pass capacitor (158) is recommended in the amplifier circuit. A Zener diode (not shown) connected across the integrator capacitor 50 allows the circuit to be used on various supply voltages.
Patent GB-233324-A (GB)
Title: Improvements in vehicle wheels with cooling disc
IPC: B60B1/12
Filed: 1925-04-07
Abstract: 233,324. Bugatti, E. May 5, 1924, [Convention date]. Disc wheels. - Single or multiple disc wheels are stamped or cast with spoke members shaped so as to act as a fan for cooling the parts such as the rim, tyre, and brake drum. In the form shown, the wheel comprises two stamped-out discs A formed with staggered spoke - arms which are twisted so as to induce a current of air across the wheel. The Specification as open to inspection under Sect. 91 (3) (a) comprises also wheels with wood spokes, and wheels in which separate spokes are attached to the rim and hub by autogenous welding, riveting, &c. This subject-matter does not appear in the Specification as accepted.
Patent GB-1412922-A (GB)
Title: Process for the preparation of azo compounds
IPC: C09B29/00
Filed: 1974-03-01
Abstract: 1412922 Azo dye preparation BAYER AG 1 March 1974 [3 March 1973] 9342/74 Heading C4P Aromatic azo compounds having at least one CN group in the ortho position to the azo bridge are prepared by reacting the corresponding ortho halogeno-azo compounds with CuCN, or systems which form CuCN, in aqueous medium in the presence of a nitrogen base. A surface active agent may also be present. CuCN forming systems specified are a cupric salt with an alkali metal cyanide, or the same with a reducing agent, or a cuprous salt with an alkali metal cyanide. The reaction is preferably carried out at 80-100‹ C., particularly using pyridine as the nitrogen base and the aqueous medium may contain up to 50% non-basic organic solvent. The dyes obtained are used for dyeing natural and synthetic fibre materials, particularly polyesters.
Patent GB-1217207-A (GB)
Title: 2,4,6,8-tetrathia-1-adamantanthioles and process for their preparation
IPC: C07D495/18
Filed: 1968-02-27
Abstract: 1,217,207. 2,4,6,8 - Tetrathia - 1 - adamantanthiol and salts thereof. PHARMACIA AB. 27 Feb., 1968 [28 Feb., 1967], No. 9366/68. Heading C2C. The invention comprises 2,4,6,8-tetrathia-ladamantanthioles of formula wherein R 1 -R 6  are each hydrogen or an alkyl group having 1 to 6 carbon atoms, and salts thereof. These compounds may be prepared by reacting a compound of formula with a compound of formula or a functional derivative thereof, wherein R 1 -R 6  have the above significance, in the presence of an acid reacting substance and recovering the obtained compound of Formula I as such or as a salt.
Patent GB-300454-A (GB)
Title: A method for increasing the adherence of footwear to the ground
IPC: A43C15/10
Filed: 1928-03-28
Abstract: 300,454. Mahon, J. M. Jan. 2, 1928, [Convention date]. Gaiters; spats.-One or more chains a, Fig. 6, are combined with a spat or gaiter to come under the tread surface of the sole only, or of the sole and heel, to prevent slipping on slippery surfaces.
Patent GB-395662-A (GB)
Title: Improvements in mops
IPC: A47L13/44
Filed: 1933-03-29
Abstract: 395,662. Mops. WHATHAM, A. and WHATHAM, H. W., (trading as WHATHAM & WHATHAM), 9, Sykes Street, Hulme, Manchester. March 29, 1933, No. 9420. [Class 19.] Fringe mops in which the fibrous material is attached to a tubular band to slide over a holder have the band gapped or slotted to facilitate replacement or removal. The slit edges are preferably closed by a fastener. One or more slots b are formed in a tube B preferably lying on the top edge of a holder C. Where no fastening device is employed, the edges of the slot are preferably bound with woven material. A fastening device D of the zipp type may be used, or other fasteners such as lacing, press studs, or buttons. The device is applicable to various shaped mop heads.
Patent GB-199835-A (GB)
Title: Improvements in or relating to drying cabinets
IPC: F26B23/10
Filed: 1922-04-01
Abstract: 199,835. Judelson, J. April 1, 1922. Seamed joints.-A drying-cabinet formed of sections readily taken apart for shipping comprises hollow side walls 10 consisting of end sections 29, 30 and intermediate sections 28, a hollow rear wall 11, and a hollow top 12, all of sheet material. The two sheets forming one of the side sections are bent at their ends to form an interlocking joint as shown at 31, 32, 34, Fig. 3, and at 36, Fig. 2. The hollow top 12, Fig. 4, is formed by joining two sheets with interlocking U-flanges 25 along their longer edges, and with a double S-shaped distance piece 26, Fig. 6, along each shorter edge. The rear wall 11, Fig. 3 is formed bv sheets with interlocking U-flanges 16. The end wall 11 fits in grooves 35, Fig. 3, formed by the end-joints of the side walls 10. The top 12 is connected to the side-walls 10 by edge-pieces comprising an outer angle 17, Fig. 4, fixed to a Z-bar 18 so as to form vertical and horizontal grooves 21, 20.
Patent GB-1511182-A (GB)
Title: Preparation of terephthalic acid by oxidation of p-xylene
IPC: C07C51/265
Filed: 1976-03-23
Abstract: 1511182 Oxidative preparation of terephthalic acid IMPERIAL CHEMICAL INDUSTRIES Ltd 23 March 1976 [11 April 1975] 09510/76 Divided out of 1511181 Heading C2C The invention comprises a process for the preparation of terephthalic acid in which a free-oxygen containing gas is passed through a liquid phase mixture of p-xylene and an aliphatic C 1-8  monocarboxylic acid in the presence of, as catalyst, at least one heavy metal compound and bromine or a bromide, at a temperature in the range 150-250‹ C. and at a pressure to maintain a liquid phase in the reactor and then after ceasing to pass the free-oxygen containing gas, holding the reaction mixture for at least ¢ hour at a temperature in the range of from 50‹ C. below the mean temperature of the reaction mixture during passage of the free oxygen containing gas, to 20‹ C. above said temperature, and then separating solid terephthalic acid from the molten liquor.
Patent GB-254040-A (GB)
Title: Improvements in signal lamps for vehicles
IPC: B60Q1/56
Filed: 1925-04-09
Abstract: 254,040. Servais, F. J. J. April 9, 1925. Drawings to Specification. Bulbs.-In a rear lamp for vehicles, a red triangle is formed on the lamb bulb and the triangular lamp front made lenticular, or the bulb is coloured entirely red and the triangular lamp provided with a clear glass triangle with an opaque centre.
Patent GB-116574-A (GB)
Title: Improvements in Expanding Taps.
Inventor: DOMMETT CHARLES HENRY
IPC: B23G5/14
Filed: 1917-07-03
Abstract: 116,574. Dommett, C. H. July 3, 1917. Taps.-An adjustable and collapsible tap has a number of radial dies c arranged axially in slots in a holder a in which is axially mounted a spindle e provided with two truncated conical members d, d<1> which bear upon the backs of the dies. The members d, d<1> are slotted axially; the base d<5>, Fig. 5, of each slot is convex to engage the concave back c<3>, Figs. 6 and 7, of the adjacent die, and one side d<2> is inclined to engage the end c<4> of the die, and the other is arranged radially. When the spindle is rotated in one direction, the dies move outwardly, and when in the other direction are retracted by coiled springs b, the ends of which engage adjacent dies, Fig. 2. The lower cone d<1> may be adjusted axially against the resistance of a spring to vary the effective diameter of the tap. The holder may have a square end for actuation by an ordinary tool, or a circular end for use in a machine. In a modification, the conical member d' is dispensed with, and the spindle is moved axially by interacting transverse and longitudinally-acting wedge members, or by means of a screwed plug engaging a screwed projection on the spindle. An adjustable wedgeshaped sleeve may be mounted around the holder to retract the dies automatically at the end of the screwing operation, when mounted m a machine.
Patent GB-538738-A (GB)
Title: Improvements relating to pick-up or tone arms for gramophones and the like
IPC: G11B3/00
Filed: 1940-05-31
Abstract: 538,738. Bearing for gramophone pick-up arms. SLADE, H. V., OFFEN, F. J., and GARRARD ENGINEERING & MANUFACTURING CO., Ltd. May 31, 1940, No. 9574. [Class 40 (ii)] [Also in Group XXXIV] A gramophone pick-up arm 1 is mounted on a bearing 8 comprising balls 10 held against cones 6b by a spring 13, and cylindrical journals 11 normally clear from spindles 6a, so that in normal play the balls provide an anti-friction bearing ; but any strong lateral stress such as may occur when the arm is handled causes the spring to yield and the spindles 6a to contact with the journals 11, so that the ball bearings are relieved of strong stresses which are taken up instead by the journal bearings.
Patent GB-926260-A (GB)
Title: Improved floating point arithmetic circuit
IPC: G06F5/01
Filed: 1962-03-13
Abstract: 926,260. Floating point computers. SPERRY RAND CORPORATION. March 13, 1962 [April 26, 1961], No. 9590/62. Class 106 (1). In a floating point computer, the result of a computation is divided into a most significant part and a least significant part, a characteristic is generated for each of the parts, and the characteristic of the most significant part is modified in accordance with change or significance of the result compared with one of the original items. As described, operands A, Q to be added are entered into binary registers 10, 12 the operands being in the form of 6 bit mantissa portions and 4 bit characteristic portions. The characteristics of the operands A, Q are compared in a circuit 22, an output signal therefrom on a line 30 being effective to align the two mantissµ correctly for addition in an arithmetic circuit 28 (Fig. 2, not shown), to which the operands are transmitted in parallel. The result of the addition, which may comprise up to twelve mantissa bits is transmitted to two output registers 42, 48, the register 42 being for the least significant part and the register 48 for the most significant part. In the arithmetic circuit 28 decimal 6 is subtracted from the larger of the two original characteristics and the result transmitted to the output register 42 as the characteristic of the least significant part of the result. Also in the arithmetic circuit 28, the most significant part of the result is normalized by shift until a binary " 1 " appears in the most significant bit position, the normalized result being transmitted to the register 48. The larger of the two original characteristics is modified according to the shift required and transmitted to the register 48 as the characteristic of the most significant portion of the result. A compare circuit 54 is arranged to compare the characteristics of the two parts of the result, the output from this circuit indicating the change in significance of the result compared with the significance of the original operands A, Q. The circuit described may be arranged to subtract, all numbers being supplied with a sign digit to indicate their sign.
Patent GB-125817-A (GB)
Title: Improvements in and relating to Projectiles.
Inventor: KAYLOR JOHN MATHIUS
IPC: F42B10/14
Filed: 1918-06-12
Abstract: 125,817. Kaylor, J. M. June 12, 1918. Ordnance design.-Relates to guns for use with winged projectiles. According to the invention, the gun, shown in section in Fig. 5, has along the bottom of its bore 2 a longitudinal groove 31 to receive a stabilizing-fin on the projectile. The purpose of the groove is to ensure that when the shell is discharged the fin is in a vertical position and a pair of sustaining-wings, projected through the shell-body by springs, are horizontal.
Patent GB-134483-A (GB)
Title: Improvements in and relating to Marine, Aerial and other Navigating Compasses.
Inventor: STEPHEN ROBERT SANDERSON
IPC: G01C17/00
Filed: 1919-04-17
Abstract: 134,483. Stephen, R. S. April 17, 1919. Mariners' and aeronautical compasses. - In order to facilitate steering on a given course, a compass is provided with a rotatable arm D secured to a plug B which passes through the cover A and carries a knurled head C. The ends of the arm D are made narrow and are bent down vertically so as to lie between the card and the bowl. The interior of the bowl is graduated, the North point coinciding with the lubber's line and the graduations extending from 90 degrees to each side of North and South; the East point is to the left of North. The compass card is preferably not graduated, but is marked with a North-South line. To use the instrument, the arm D is turned until its extremity coincides with the graduation corresponding to the required course, and the ship &c. is steered so that the North, or South, point on the card coincides with the end of the arm D.