baber/WOPTO huggingface dataset:
Patent GB-209111-A (GB)
Title: Improvements in turbine-electric locomotives
IPC: H02J3/38
Filed: 1923-01-29
Abstract: 209,111. Ingersoll, H.L. April 24, 1922, [Convention date]. Petrol-electric vehicles-Locomotives propelled by turbines transmitting power through electric generators and motors carry two or more turbinegenerator sets which are automatically started and stopped so as to vary the number of sets in use according to the load. In the apparatus shown in the Figure, two turbines 17<a>, 17<b> respectively driving electric generators 18a, 18<b> are started and stopped by valves 70 actuated by electromagnets which receive current from a branched electric circuit 76. Under normal load, only one of the turbine sets is working, and only one branch of the circuit is closed. In case of undue load on the set in use, a solenoid 101 closes both branches of the circuit 76, thereby bringing both turbines into use. An automatic distributing switch 90 changes the set in use each time that normal load is restored. Solenoid switches 42 effect the automatic cutting in and cutting out of the generators.
Patent GB-1096929-A (GB)
Title: Compositions containing polymers with epoxy groups
Inventor: MARTIN JOHN EDWARD
IPC: C08L57/00
Filed: 1965-07-30
Abstract: Cross-linkable compositions comprise (i) a thermoplastic copolymer derived principally from a terminally ethylenically unsaturated monomer polymers of which are thermoplastic moulding materials, and containing in the polymer chains at least 5 mole per cent of comonomer units having epoxy groups, and (ii) a compound containing 2 or more urethane groups or a mixture of a polyisocyanate and a compound having at least one alcoholic or phenolic hydroxyl group. The compositions are cross-linked by heating preferably with simultaneous shaping and may be injection or compression moulded, extruded or rotationally cast.
Patent GB-381758-A (GB)
Title: Process for the manufacture of a female sexual hormone
Filed: 1931-11-25
Abstract: Female sexual hormone of the formula C18H24O3 obtained from urine or other body fluids, or oils or preparations containing this hormone, are treated with an agent capable of removing water from the molecule so as to yield a hormone of the formula C18H22O2.  The reaction may be brought about by heating with potassium bisulphate, phosphorous pentoxide or the like, or catalytically by passing the vapours over alumina, bleaching earths, or other highly porous substances. According to examples the starting material is heated with potassium bisulphate or porous bleaching earth in a retort and is distilled off under high vacuum at temperatures between 120 and 200 DEG C.  The distillate may be dissolved in alcohol and precipitated therefrom by addition of water.
Patent GB-1106538-A (GB)
Title: Certain substituted 5-keto-pyrazolothiazines
IPC: C07D513/04
Filed: 1965-07-30
Abstract: Novel substituted 5-keto-pyrazolothiazines of formula <FORM:1106538/C2/1> wherein R, R1, R2 represent, hydrogen, lower alkyl, phenyl, halophenyl, lower alkylphenyl and lower alkoxy phenyl, whereas R3 is hydrogen, lower alkyl, lower alkenyl, lower alkynyl, benzyl, halobenzyl, lower alkyl benzyl, or lower alkoxybenzyl, the term lower referring to those compounds having 1-4 carbon atoms, are prepared, in the case where R3 is hydrogen, by hydrogenating compounds of formulae <FORM:1106538/C2/2> and by reacting this compound with a compound R3-Hal, where R3 is other than a hydrogen atom and " Hal" represents chlorine or bromine, in the presence of an alkali metal hydride.  Compounds of the second formula above are prepared by treating IR-3R1-S-keto-pyrazoles, R and R1 having the above significance with phosphorus oxychloride, nitrating the resulting 5-chloro derivative with fumin nitric acid to produce IR-3R1-4-nitro-S-chloro-pyrazoles, refluxing this compound with 2-R-2-3-thiol acetic acid, R2 being as defined above, to form the required free acid and esterifying as required.
Patent GB-334119-A (GB)
Title: Improvements in means for minimising the rolling & pitching of ships
IPC: B63B39/06
Filed: 1929-10-29
Abstract: 334,119. Kefeli, M. Nov. 16, 1928, [Convention date]. Rolling motion of ships, damping.-The Specification as open to inspection under Sect. 91 (3) (a) states that laterally located propellers or ballast tanks may be operated to damp rolling motion. This subject-matter does not appear in the Specification as accepted.
Patent GB-1430074-A (GB)
Title: Penicillins
IPC: A23K20/195
Filed: 1972-07-13
Abstract: 1430074 Penicillins BEECHAM GROUP Ltd 28 June 1973 [13 July 1972] 32919/72 Heading C2P A process for the preparation of penicillins of formula or a pharmaceutically acceptable salt or ester thereof wherein R<SP>1</SP> represents hydrogen or a C 1-7  alkyl, C 3-7  cycloalkyl, C 5-7  cycloalkenyl, phenyl, phenyl substituted with one or more hydroxyl, halogen or C 1-3  alkyl groups, phenylalkyl have 1-3 carbon atoms in the alkyl component, thienyl, pyridyl or thiacyclohexyl group, R<SP>3</SP> represents hydrogen or, to gether with R<SP>1</SP> and the carbon atom to which they are joined form a C 5-7  cycloalkyl ring; R a <SP>2</SP> ,  R b <SP>2</SP> and R c <SP>2</SP> are the same or different and each is an alkoxy, alkylthio, phenyl, phenoxy, phenylthio, phenylalkyl, phenylalkoxy or phenylalkylthio group, which groups contain 1 to 8 carbon atoms and any of which groups may be substituted by halogen, cyano, hydroxy, amino, C 1-6  alkylamino carboxylic acid or esterified carboxylic acid groups or an amino substituted by C 1-6  alkyl, benzyl or phenyl groups comprises reacting a compound of formula or a salt or ester thereof with a phosphone compound of formula The reaction is preferably carried out under anhydrous conditions. Preferably the D-form of the product is prepared. There is described in the examples the preparation of the following, D - α - triphenylphosphiniminobenzylpenicillin, D - α - dimethylphenylphosphiniminobenzylpenicillin, D - α - triethylphosphiniminobenzylpenicillin, D - α - tri - (n - butyl)phosphiniminobenzylpenieillin, D - α - tri - (ptolyl)phosphiniminobenzylpenicillin, D - α- tri - (p - methoxyphenyl)phosphiniminobenzylpenicillin, D - α - tri - (m - tolyl)phosphiniminobenzylpenicillin, pivaloyloxymethyl - D- α - triphenylphosphiniminobenzylpenicillanate, acetoxymethyl - D - α - triphenylphosphiniminobenzylpenicillanate, Benzyl - D - α- triphenylphosphiniminobenzylpenicillanate, D - α - tri - (isopropyl)phosphiniminobenzylpenicillin, D - α - tri - (2 - cyanoethyl)phosphiniminobenzylpenicillin, D - α - tri - (n - octyl)phosphiniminobenzylpenicillin, D-α-tri-ethoxyphosphiniminobenzylpenicillin, D-α-tri-(dimethylamino)phosphiniminobenzylpenicillin, D-α-dimethylphenylphosphinimino - p - hydroxybenzylpenicillin, D - α - dimethylphenylphosphinimino - 1,4 - cyclohexadienylmethylpenicillin, D - α - dimethylphenylphosphinimino - 3 - thienylmethylpenicillin, D - α - dimethylphenylphosphinimino - methyl - penicillin, D - α - dimethylphenylphosphiniminoisobutyl penicillin, D-α-dimethylphenylphosphinimino - cyclohexylmethylpenicillin, D- 1 - dimethylphenylphosphinimino - 1 - cyclohexylpenicillin, D - α - dimethylphenylphosphinimino - 3 - pyridylmethylpenicillin, D - α- triethylphosphinimino - p - hydroxybenzylpenicillin, D - α - dimethylphenylphosphinimino - 1,4 - cyclohexadienylmethylpenicillin, and D - α - dimethylphenylphosphinimino - 3- thienyl methylpenicillin.
Patent GB-342306-A (GB)
Title: Improvements in damping arrangements for acoustic devices particularly applicable for telephone transmitters or the like
IPC: H04R7/26
Filed: 1929-10-30
Abstract: 342,306. Microphones. STANDARD TELEPHONES & CABLES, Ltd., FLINT, J. G., and McKIE, D. G., Columbia House, Aldwych, London. Oct. 30, 1929, No. 32967. [Class 40 (iv).] The diaphragm 2 of a telephone transmitter is damped by a pile of paper &c. leaves 7 which is held in position on the raised portions 5<1> of the electrode carrier 4 by means of a flexible cap 9. The cap is preferably constructed of silk impregnated with cellulose acetate.
Patent GB-604847-A (GB)
Title: Improvements in or relating to electron discharge devices employing mosaic screens
IPC: H01J31/36
Filed: 1945-12-06
Abstract: 604,847. Cathode-ray tubes; electron multipliers. LUBSZYNSKI, H. G. Dec. 6, 1945, No. 32974. [Class 39 (i)] A cathode-ray tube such as a television transmitter tube comprises a mosaic screen scanned by a low-velocity electron beam, an electron multiplier providing signal output, and means for directing into the multiplier those electrons which are reflected from the screen after its equilibrium potential has been reduced substantially to cathode level. The scanning is angular, i.e. is not of the parallel type obtained in a strong longitudinal magnetic field. The tubes illustrated have a series of decelerating electrodes 10 to provide the lowbeam velocity and the mosaic screen, which may be of the photo-electric kind charged by an optical image or of the secondary emitting kind charged by an electron image, is disposed adjacent to the end wall 6 and is normally curved to allow perpendicular incidence of the beam. In Fig. 1, the electron gun is disposed oblique to the tube axis and the beam is bent on to the axis by a coil .producing a uniform magnetic field perpendicular to the page in the region 7 while the returning electrons are deflected by this field in the opposite direction into the electron multiplier 11, 12. Scanning is effected by deflecting plates 8, 9 and the returning electrons reflected more numerously from the less positive parts of the charge image enter the multiplier, which' in the example shown has two grids and a plate as emitting electrodes 11 and a signal grid 12. The electron gun has cathode shield 3 at a few volts positive or negative to cathode 2 and is preferably operated with high positive potential on the first anode 4 and a lower potential on the second anode 5. to get large current for lower voltages. The embodiment shown in Fig. 2, with electron gun on the axis and magnetic coils 17, 18 for the scanning deflection uses a pulsed beam and separates the incident and reflected pulses of electrons by means of pulsed deflecting plates 19 so that the reflected electrons go to the multiplier. The incident beam may be pulsed by cathode shield 3 and the deflector plates 19 are pulsed in suitable phase relative to the current pulsing so that they are energized only when a reflected bunch is passing through and an incident bunch is not present. The applied pulses 'may have a repetition frequency equal to that of the carrier which is ultimately modulated by the output. In Fig. 3 (not shown), the multiplier of Fig. 2 is disposed behind one of the deflector electrodes 19 which is made secondary emitting and of louvre or mesh structure to serve as the first multiplication stage.
Patent GB-962638-A (GB)
IPC: C08L25/04
Filed: 1960-09-28
Abstract: A process for the production of biaxially oriented crystalline polystyrene forms which retain their orientation up to 200 DEG C. comprises longitudinally stretching a film-like form of substantially amorphous isotactic polystyrene by 500 to 600% of its original length at a rate of 5,000 to 20,000% per minute at a temperature of 110 to 125 DEG C. and whilst maintaining it stretched within said limits, transversely stretching it by 200 to 600% of its original width at a rate of 800 to 2,000% per minute at a temperature of 130 to 170 DEG C. and either after longitudinal and/or transverse stretching, annealing (e.g. at 175 to 185 DEG C.) whilst maintaining in the stretched condition.  In a modification longitudinal and transverse stretching is effected simultaneously by 400 to 700% of the original axes dimensions at a rate of 2,000 to 40,000% per minute at a temperature of 115 to 140 DEG C. and annealing whilst maintaining in the stretched condition. The longitudinal stretching may be effected by rollers in tandem or cascade and the transverse stretching by tenter-frame or lazy tongs cross-stretcher. As an illustration of the products obtained it is said that a film 48 inches wide and 15 mils thick may be produced from an initial film 12 inches wide and 150 mils thick. The amorphous isotactic polystyrene may be obtained from a low pressure polymer by solvent extraction to remove atactic polymer followed by heat treatment (e.g. film extrusion) to reduce crystallinity.  Specification 917,029 is referred to.
Patent GB-1121319-A (GB)
Title: Compositions of thermoplastic polymers containing polar groups with certain ethylenecopolymers
IPC: C08L23/08
Filed: 1966-07-25
Abstract: Compositions comprise (A) a thermoplastic polymer having polar groups and (B) a copolymer having (1) units of formula <FORM:1121319/C3/1> and (2) units of formula <FORM:1121319/C3/2> where R1 is hydrogen or alkyl, and R2 is a hydrocarbyl group in which the carbon atom attached to the C=O group is a quaternary carbon atom, and optionally (3) units of formula <FORM:1121319/C3/3> or <FORM:1121319/C3/4> where R3 is hydrogen or alkyl, R4 is a hydrocarbyl group in which the carbon atom attached to the C = O group is a primary, secondary, tertiary or aromatic-type atom, R5 is hydrogen or alkyl, and X is hydroxyl or a metal alcoholate group. The polymers of category A are homo or copolymers of vinyl halides, e.g. with vinyl esters (which are preferred and exemplified) vinylidene halides, acrylic or methacrylic acid esters, or acrylonitrile.  The copolymers of category B may also contain units derived from other monomers, those specified being acrylic, methacrylic, fumaric, maleic, itaconic, aconitic and vinyl sulphonic acids and their metal salts, vinyl benzoate and chloride, vinylidene cyanide and chloride, vinylmethyl ether, acrylonitrile, norbornene and norbornadiene.  The units (2) may be derived from esters of pivalic acid, 1,1,3,3 - tetramethylbutanecarboxylic acid, 1,2-dimethyl - 1 - isopropyl - propane carboxylic acid, 1,1,4 - trimethylpentane carboxylic acid, and esters of acids having 9-19 carbon atoms and derived from cracked petroleum fractions. The units (3) are suitably derived from vinyl- or isopropenyl esters of acetic, propionic, isobutyric, 2 - ethylhexanoic, and benzoic acids. The units (4) are derived from the partial or complete hydrolysis of the ehtylene-ester copolymers. The compositions are prepared by mixing the two polymers in the solid state at elevated temperatures in mixing and/or kneading devices, preferably in two stages, one at a low temperature and one at a higher temperature. Polymers (A) may be obtained by conventional techniques, while polymers (B) may be obtained by the processes described in Specification 1,094,087 and in Specification 1,086,036. In the examples, vinyl chloride homopolymers and copolymers with vinyl esters are compounded with various ethylene-ester copolymers, together with 1,3,5-trimethyl-2,4,6-tris - (3,5 - di - t - butyl - 4 - hydroxybenzyl) benzene as antioxidant and di-(n-butyl)-tin-b -mercaptopropionate as stabilizer.
Patent GB-1122220-A (GB)
Title: Improvements in or relating to tyre pressure gauges
Inventor: PLATTS RONALD
IPC: G01L19/00
Filed: 1967-07-20
Abstract: 1,122,220. Tyre pressure gauges. PNEUMATIC COMPONENTS Ltd. July 20, 1967, No.33366/67. Heading G1L. A tyre pressure gauge dust cap is provided at one end with a blind bore 1 having ribs 2 to fit over and engage the barrel of the gauge and at the other end with a recess 3 containing a bore 5 and a slot 6 to remove or replace a tyre valve. Flutes 7 are provided on the outer surface of the cap.
Patent GB-1082315-A (GB)
Title: Hinge, more particularly for mounting the doors of articles of furniture
IPC: E05D3/06
Filed: 1964-08-17
Abstract: 1,082,315. Hinges. KARL LAUTENSCHLAGER KOMM. GES. Aug. 17, 1964 [Aug. 16, 1963; Nov. 7, 1963; July 15, 1964], No. 33489/64. Heading E2F.  A door hinge comprises a head portion 3 attached or let in to the door 2 and constructed from two mirror image moulded or extruded plastic or metal plates each having guilding slots 4, 5, 6 the space between the two plates being occupied by a support member 7 attached to the door support wall 1 and having pins 8, 9, 1Q engaging the slots 4, 5, 6 respectively in the plates. Adjustment of the door 2 relative to the wall 1 is accomplished by a wedge adjuster 15. In another embodiment a channel 31 in one of the guide plates joins the guide slots 4, 5 allow the door to be removed when in a suitable position as shown in Fig. 13. Fig. 13 also shows the use of a web 10 rather than a pin for engagement with slot 6. The support member 7 may be made in two relatively adjustable parts 7', 7", Fig. 9 (not shown), so that the part 7' can be adjustably positioned relative to the support wall 1.
Patent GB-525258-A (GB)
Title: Improvements in mechanical pencils
IPC: B43K21/22
Filed: 1938-11-18
Abstract: 525,258. Pencil holders. ESTERBROOK STEEL PEN MANUFACTURING CO. Nov. 18, 1938, No. 33538. Convention date, Nov. 18, 1937. [Class 146 (iii)] A mechanical pencil comprises a casing, an outer tubular member slidable therein against resilient means and having an interiorly tapered end projecting through the casing, and an inner tube forming part of the lead passage slidable within but engaging frictionally the outer tubular member and having slidably mounted thereon resilient jaws co-operating with a fixed abutment to grip the lead when the parts are retracted, and lead gripping fingers carried by the inner tubular member and co-operating with the outer tubular member to grip the lead when the tubular members are in their retracted positions. When an operating-head on the end of the casing 21 is pressed inwardly, a magazine tube connected to a member 26 is moved towards the point section 22 against the action of a spring 27. A tube 30 is secured to the member 26 and extends beyond the end of the tip 22. Enclosed in the tube 30 is a second tube 31 having slit ends 31a which tend to grip the lead, and slit ends 31b providing frictional mounting in the tube 30. Frictionally mounted on the outside of the tube 30 is a sleeve 36 which carries gripping-jaws 35 normally forced by a shoulder 23c on a member -23 secured in the barrel to pass through slots in the tubes 30, 31 to grip the lead. Movement of the member 26 carries with it the tubes 30, 31 and sleeve 36 until the latter is stopped by a shoulder 22b in the tip. During this movement the jaws 35 have moved away from the shoulder 23c and have therefore released the lead. The lead is still carried forward by the tube 31 until the upper ends of the slots therein engage the jaws 35. The tube 30 then continues its forward movement alone. On release of the pressure, the tube 30 carries back with it the tube 31 and lead and the sleeve 36 until the jaws are arrested by the shoulder 23c and caused to grip the lead. The tube 31 is then carried back and slips over the lead until the lower ends of the slots therein engage the jaws 35, after which the tube 30 returns alone to normal position wherein its forward end engages the slit end of the tube 31 and so assists in gripping the lead. The cam faces of the jaws 35 and lower end of the tube 31 are arranged at the same angle so as to avoid damage to the lead.
Patent GB-845112-A (GB)
Title: Improvements in or relating to bonded assemblies
Inventor: BURGESS PETER JOHN
IPC: B23K20/22
Filed: 1956-11-02
Abstract: 845,112. Welding by pressure. GENERAL ELECTRIC CO. Ltd. Oct. 31, 1957 [Nov. 2, 1956], No. 33568/56. Class 83 (4). [Also in Group XXXVI] In bonding two parts, the surface of at least one part consisting of soft metal, the surfaces of the two parts are slid one over the other and the parts are pressed together to form a clean surface of the soft metal on the part or parts and to effect a bond therebetween. The end face of a cylindrical metal block is coated with indium on which a flat surface is formed by slicing or turning and this flat surface is pressed under a pressure of 15 pounds per square inch against the end face of another cylindrical metal block, one surface being rotated relatively to the other for one rotation of about 2 seconds, to effect bonding. The indium surface may be slightly convex and both end faces may be coated with indium. A crystal of semiconductor bismuth telluride is coated with indium and bonded as before to an indiumcoated metal block carrying a cooling fin to form a thermo junction for a thermo electric refrigerator. According to the Provisional Specification, in making a semi-conductor power rectifier comprising a germanium element attached as described in Specification 806,596 to one end of a first electrode in the form of a cylindrical copper block, a coating of indium is applied to the other end of the electrode and to an end face of a cylindrical copper core carrying cooling fins and the indium surfaces are pressed together under a pressure of 15 pounds per square inch while one is rotated relative to the other. A second electrode is coated with indium which is pressed against a bead of indium on the germanium element while relatively rotating the parts. A hermetic enclosure for the element comprising a copper cup-shaped envelope with a flanged rim has the rim coated with indium and is then, in an inert atmosphere, pressed and rotated against indium in an annular channel in a disc of copper or nickel-plated stainless steel having an opening in which the first electrode is secured. A lead on the second electrode is crimped into a copper thimble in the envelope. Indium may be applied to only one of the surfaces to be bonded. Specifications 808,776 and 845,111 also are referred to.
Patent GB-652730-A (GB)
Title: Improvements in or relating to methods for improving the resistance of polyethylene or polyethylene-containing materials to ultra violet light
IPC: C08K5/01
Filed: 1948-12-31
Abstract: The resistance of polyethylene or polyethylene containing materials other than mixtures of polyethylene and polystyrene, to ultra-violet light is improved by incorporating therein a small quantity, amounting to less than 1 per cent of a substance, other than a fluorescent dyestuff, which possesses a strong absorption spectrum in the ultra-violet light region, for example, naphthalene, anthracene, fluorene, and other aromatic hydrocarbons derived from coal tar.  An antioxidant may also be incorporated in the polyethylene.  Mixing is performed on a roll mill at elevated temperature, and the compositions thus produced may be used for the insulation of electric cables.  The Provisional Specification discloses compositions of polyethylene and fluorescent dyestuffs.