baber/WOPTO huggingface dataset:
Patent GB-620963-A (GB)
Title: Improvements in or relating to the manufacture of carbon dioxide-modified polymers of ethylene
Filed: 1947-02-05
Abstract: Carbon dioxide-modified ethylene polymers are prepared by heating ethylene and carbon dioxide in a weight ratio of 0.5-5 to 1 at 50-400 DEG  C. under a pressure above 100 atmospheres in the presence of a compound which generates free radicals and which catalyses the polymerization of ethylene.  Interpolymers and telomers may be similarly modified.  The process may be carried out continuously in bulk, using a liquid medium, e.g. benzene, chlorobenzene, iso-octane, 2,2,3-trimethylbutane and water, or in emulsion or granular systems. Catalysts specified are diacetyl, acetyl benzoyl, dipropionyl, dilauroyl, benzoyl, dimethyl, diethyl, dipropyl, di-(tert.-butyl) tetrahydronaphthalene, cyclohexanone and acetone peroxides; hydrazine hydrochloride and sulphate, dibenzoyl- and dimethylhydrazines, trimethyl - hydrazinium iodide; pyridine, trimethylamine and dimethylaniline oxides; alkali metal and ammonium persulphates, perborates and percarbonates; benzalazine, heptaldazine, diphenylketazine; acetone, d-camphor, a -benzil, butyrald, a -benzoin and dimethylglyamines; phenylhydrazones of benzaldehyde, cyclohexanone, cyclopentanone, acetophenone, benzophenone, menthane and camphor; semicarbazones of acetone, methyl ethyl ketone, diethyl ketone, biacetyl, cyclopentanone, cyclohexanone, acetophenone, propiophenone, benzophenone and camphor; Schiff's bases, e.g. benzalamine, benzol-o- and p-toluidine benzaldehyde derivatives of methylamine, ethylamine and heptylamine; acetaldehyde, isobutyraldehyde and heptaldehyde anils; tetramethyl lead; oxygen. The products may be formed into films or used in making polishes, e.g. by compounding with paraffin wax and turpentine, inks, lubricants, coating and impregnating agents.  Specification 581,899 is referred to.
Patent GB-764146-A (GB)
Title: Production of new hydantoin derivatives
IPC: C07D233/72
Filed: 1955-02-07
Abstract: The invention comprises hydantoins of the general formula <FORM:0764146/IV(b)/1> where R1 and R2 are the same or different hydrocarbon radicals, any aliphatic chains of which can be interrupted by O or S and/or any aromatic nuclei of which can be halogen or alkoxy substituted, and which can be linked to each other, and their preparation by heating the dihydrazide or an ester of a monohydrazide of a C,C-disubstituted glycine-N-carboxylic acid in the presence or absence of solvents or diluents.  A specific diluent is water, this being gradually distilled off to remove continuously the liberated hydrazine.  Examples describe the preparation, by heating a di-lower alkyl ester of the appropriate C,C-disubstituted glycine-N-carboxylic acid with excess hydrazine hydrate in absolute ethanol or methanol, distilling off the solvent and concentrating an aqueous solution of the dihydrazide residue by heating, of the following compounds of the above general formula in which R1 and R2 in the same compound have the values: dimethyl, methyl - iso - butyl, diethyl, ethyl - n - butyl, methyl-n-hexyl, pentamethylene, and methylbenzyl.  The following 5,5-disubstituted-3-amino hydantions are also referred to: methylethyl, methyl-n-propyl, ethyl-n-amyl, methylcyclopropyl, methyl - phenyl, ethyl - phenyl, diphenyl, methyl - allyl, ethyl - cyclohexenyl, methyl - p - chlorophenyl, methyl - p - methoxyphenyl, methyl - b  - phenoxyethyl, methylb -methylmercaptoethyl and methyl-sec-butyl.  Starting material. N-carbethoxy-1-aminocyclohexane carboxylic acid ethyl ester is obtained by reacting 1-amino-cyclohexane carboxylic acid ethyl ester with chloroformic acid ethyl ester.
Patent GB-501945-A (GB)
Title: Improvements in or relating to gyroverticals
IPC: G01C19/44
Filed: 1938-02-04
Abstract: 501,945. Gyroscopic apparatus. ASKANIA-WERKE AKT.-GES. VORM. CENTRAL WERKSTATT DESSAU UND C. BAMBERG -FRIEDENAU. - Feb. 4,1938, No. 3506. Convention date, Feb. 9, 1937. [Class 97 (iii)] In a gyro-vurtical, disturbing torques arising from the effect of horizontal accelerations on the gravitationally-responsive control members for erecting the gyro are opposed by counter torques, which are independent of the control members. The Figure shows in section a depending extension of the rotor casing from which issue erecting air jets 60-63, controlled by pendulous shutters 70-73. The counter torques are applied against reaction plates 80-83 by air jets 9 supplied from a control valve operated by a rate of turn responsive gyroscope. The counter torques may be applied electromagnetically as described in Specification 470,311.
Patent GB-431628-A (GB)
Title: Improvements in bearings for elastic fluid turbines
IPC: F16C33/10
Filed: 1935-02-04
Abstract: 431,628. Bearings for elastic fluid turbines. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Feb. 4, 1935, No. 3569. Convention date, Feb. 3, 1934. [Class 12 (i)] [See also Group XXVI] The shaft 10 of an elastic-fluid turbine has a bearing 12 which is lubricated and cooled by water and is arranged so that steam leaking from the turbine is condensed by the water discharged from the bearing. The bearing block 19 is mounted in a pedestal 21 having a flange secured to the turbine casing 15 by bolts 22. The block 19 has a lining 29 of fibrous material united by an artificial resin, or of bronze impregnated by graphite. Water is supplied to grooves 30 in the lining 29 through a pipe 23. The turbine casing 15 has a packing 16, 17, and between the latter and the bearing block the pedestal 21 has a chamber 31. Steam leaking through the packing 16, 17 mixes with, and is condensed by, the water discharged from the bearing and the condensate may be drained through a pipe 32. At the low pressure end of the turbine the packing 16, 17 may be omitted.
Patent GB-620300-A (GB)
Title: High frequency electric wave heating apparatus
IPC: H05B6/50
Filed: 1945-02-14
Abstract: 620,300. Automatic control of high-frequency heating. COMMUNICATIONS PATENTS, Ltd., and ROGERS, E. W. Feb. 14, 1945, No. 3664. [Class 38 (iv)] To obtain constant loading of an oscillator supplying high-frequency heating apparatus, power means adjust a variable reactance associated with the load circuit or frequency determining circuit of the oscillator, a relay or relays responsive to variations in the oscillator current act jointly with other switching means operated as a result of the actuation of the variable reactance to control the power means. As shown, the load circuit includes heating electrodes 20, a coil 19 coupled with the oscillator circuit, and a variable inductance 8. A contact 9 on the inductance is adjusted by a motor 10 having forward and reverse windings 11, 12 connected in parallel circuits through limit switches 14, 15 in series with the respective contacts of relays 5, 6. The relay coils are in series across a cathode resistance 2 of the oscillator valve 1. When the manual switch 21, 23 is placed in its upper position the oscillator is energized and the motor 10 operates to reduce the inductance 8 progressively until the minimum current relay 5 opens its contacts. Should the current rise sufficiently to operate the maximum relay 6 the motor will operate in the reverse sense. When the oscillator is deenergized by reversing switch 21, 23 the motor 10 will be operated to restore inductance 8 to its maximum value. Gas-filled discharge tubes may be used in association with the relays 5, 6. The motor may be a one-way type with a reversible transmission system. Specification 362,134 is referred to.
Patent GB-136036-A (GB)
Title: Process for the Preparation of Detoxicated Vaccine.
Inventor: THOMSON DAVID
IPC: A61K39/02
Filed: 1919-02-14
Abstract: 136,036. Thomson, D. Feb. 14, 1919. Vaccines.-Detoxicated vaccines are prepared by dissolving bacteria in alkali and reprecipitating with acid, the process being repeated until the supernatant liquid gives no precipitate with picric acid. As a modification, the first precipitate may be washed with a solution of NaH2PO4 or other weak acid to remove toxins. The precipitate obtained by either method is either dissolved in alkali or mixed with a solution of NaH2PO4 for use.
Patent GB-192922-A (GB)
Title: Improvements in connection with the live rails or conductors in systems of electric traction
IPC: B60M1/04
Filed: 1922-02-08
Abstract: 192,922. Ellson, G., and South Eastern & Chatham Railway Companies Managing Committee. Feb. 8, 1922. Conductors for electricity; guards for conductors.-Side-running conductor rails 1 have guards comprising a vertical plane board 4 and an inclined plane board 5 which engage inclined and vertical iaces formed or provided on the rails. the boards being secured in position by U-shaped brackets 9 bearing directly against the boards. The rails are L-shaped, with an horizontal limb 1 and an inclined limb 2 with running face 3. The limbs 1, 2 are engaged by the arms 7, 8 of a clip having a vertical member 6 in contact with the limb 2 of the rail. The rail may be inclined at 13, 14 throughout its length or at intervals to engage the insulators.
Patent GB-1374982-A (GB)
Title: Heat exchangers
IPC: F28D1/03
Filed: 1972-04-28
Abstract: 1374982 Heat exchangers ASSOCIATED ENG Ltd 28 April 1972 [2 Feb 1971] 3759/71 Heading F4S In a double pass heat exchanger comprising a plurality of tubes 11 of flattened cross-section spaced apart by corrugated fin members 12 and rectangular flanged tubular spacer members 14, the inlet and outlet manifolds are disposed at the same end of the tubes, each tube being internally divided into flow and return channels 18, 19 by a divider member 16. A pair of manifold tubes 20, 21, preferably of semicircular cross-section, extend through tubular passages (26, Fig. 8) in the spacer members 14 and through rectangular apertures 13 in the tubes, one of the manifold tubes 21 communicating with the flow channels 18 and the other 20 with the return channels 19. The manifold tubes 20, 21 connect with end members 22, 23 constituting inlet and outlet connections for the heat exchanger. The tubes 11 and corrugated fins 12 may be made from aluminium or aluminium alloy, and the spacer members 14 and manifold tubes 20, 21 may be made from aluminium alloy or from a plastics material such as polyamide. In an alternative embodiment (Figs. 9-12, not shown) the manifold tubes 20, 21 are omitted and each divider member is in the form of a flanged T. A channel section sheet member (30) fitting over the manifold end of the heat exchanger is provided for strengthening purposes.  The following abridgments are included in this series since the Specifications were through an error, not allotted to this group. References to them will be found in the name index to this volume.
Patent GB-468350-A (GB)
Title: Stabilization of television amplifiers
IPC: H03F1/50
Filed: 1936-07-24
Abstract: 468,350. Valve amplifying circuits. RADIOAKT.-GES. D. S. LOEWE. July 24, 1936, No. 3853/37. Convention date, July 25, 1935. Divided out of 464,553 under which a Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 26, 1937. [Class 40 (v)] Instability in a television amplifier, due to back coupling afforded by a common current supply source, is remedied by applying to the screen grid of the early stages a suitable fraction of the varying supply voltage. The anode voltage for the valve 24 is supplied from the source through a line 8, a filter 31, 32 and the anode coupling-resistance 33. The screengrid voltage is supplied from a potentiometer 27, 28. Voltage variations in the supply line 8, due to variations in the current taken by other valves in the amplifier, are conveyed to the screen-grid by a condenser potentiometer 29 30 and by adjustment of the potentiometer ratio 29, 30 the anode voltage is rendered independent of supply voltage variations. As an additional precaution, the supply current for the early stages of the amplifier may traverse more filter sections than that for the later stages, as described in Specification 464,553.
Patent GB-582896-A (GB)
Title: Fluid regulating valve
IPC: F16K49/00
Filed: 1944-03-02
Abstract: 582,896. Valves. EICHER, F. March 2, 1944, No. 3907. [Class 135] In a steam &c. valve having an inlet 1, Fig. 1, and an outlet 2, the bore in the valve seat 9 forms a guide for the webs 17 of the valve head 3 which is secured to a spindle extending through a guide sleeve 7, stuffing-box 11 and a cooling chamber 10 into which condensate seeps and which is surrounded by a cooling jacket 21. The cooling chamber, which is formed by a bush 13 held in position by a yoke 14, permits the use of soft packing in the stuffing-box. The valve is controlled by a servomotor 5 supported by the yoke. The contacting surfaces of the valve seat and the head are protected by welding high-percentage cobalt alloy thereto, and may be ground by a lever 23 secured to the spindle. In a modification, the valve head 3, Fig. 2, is integral with the spindle and formed with a cylindrical part 18 coacting with the bore of the seat 9 and formed with transverse steam ports 19 having flared ends.
Patent GB-754228-A (GB)
Title: Improvements in or relating to domestic hot water storage tanks
IPC: F24H1/18
Filed: 1954-02-10
Abstract: 754,228. Hot water supply systems. CUTHELL & CO., Ltd., D. M. and CUTHELL, R. K. M. Dec. 20, 1954 [Feb. 10, 1954], No. 3918/54. Addition to 700,664. Class 64(1). In the hot-water storage tank assembly of the parent Specification, the bottom walls 10<SP>1</SP>, 11<SP>1</SP> of the two cylinders 10, 11 are outwardly domed and surrounded by steel or other strong skirts 14, 15 projecting below the bottom walls. The lower connecting pipe 13 lies between and is connected to the bottoms of the domed bottom walls.
Patent GB-653639-A (GB)
Title: Improvements in or relating to telephone systems
Inventor: BIRNIE ROBERT CRUICKSHANK
IPC: H04Q5/02
Filed: 1949-02-18
Abstract: 653,639. Partly electromagnetic switches. POSTMASTER GENERAL. Feb. 18, 1949, No. 3974/48. [Class 38(v)] [Also in Group XXXIX] The switch plunger 1 of a telephone handset depresses, against a spring (not shown), a pivoted bracket 2 which in turn holds a latch 5 against a small helical spring (not shown). On removal of the handset, the latch 5 is free to follow an armature 9 when it is attracted to its relay 7, as in Fig. 1c. The armature 9 is then locked in the operated position until replacement of the handset returns the latch 5 to its original position.
Patent GB-796439-A (GB)
Title: Inductive signalling system for the detection and identification of vehicles or other objects
IPC: B61L25/04
Filed: 1956-02-09
Abstract: 796,439. Inductive signalling. WESTINGHOUSE AIR BRAKE CO. Feb. 9, 1956 [March 18, 1955], No. 4039/56. Class 40 (5). An inductive signalling system incorporates a normally quiescent untuned oscillator comprising valves V1-V2 which oscillates when a tuned inductor L3 is brought into proximity to the input and output inductor L1, L2. The oscillator activated at the frequency determined by the tuned inductor L3 operates one of a plurality of relays CR1, CR2, &c. fed through respective frequency selective filters FS1, FS2, &c. A moving vehicle or body carrying the tuned inductor L3 may be identified by the operation of the appropriate relay CR and its associated indicator at a fixed point. Alternatively the tuned inductor may be fixed and the other circuits carried by the moving body.
Patent GB-534513-A (GB)
Title: Improvements in the mounting of hand magnifying glasses
IPC: G02B25/00
Filed: 1940-03-05
Abstract: 534,513. Magnifying glasses. HORSTMANN, F. G. March 5, 1940, No. 4084. [Class 97 (i)] A magnifying glass 1 is connected by a resilient element 3 to a handle 4, and is provided with a protective guard 5 projecting at least on one side of the glass. The handle may comprise a sleeve on two branches of a single wire forming the resilient element and guard, a frame 2 for the glass being soldered to the wire in a position offset from the axis of the handle. Modifications are described in which the guard is rectangular or comprises two wires perpendicular to the frame 2.
Patent GB-443396-A (GB)
Title: Improved process for the manufacture of a therapeutically active derivative of phthalic acid
IPC: C07C233/12
Filed: 1935-02-08
Abstract: o-Phthalic acid di-diethylamide, which possesses therapeutic properties, is prepared by treating a phthalyl halide in aqueous solution with diethylamine and salting out the product.  The diethylamine may be present to the extent of 4 mols. per mol. of phthalyl halide, but 2 mols. suffice when alkali or alkali carbonate is added.  The amide is purified by filtering its aqueous solution through active charcoal, followed by salting out and vacuum distillation.  An example is given.
Patent GB-700316-A (GB)
Title: Culturing penicillin-producing organisms in liquid media containing fats or the fattyacids therefrom
Filed: 1951-02-20
Abstract: A method of culturing a penicillin-producing micro-organism comprises culturing the organism in contact with a liquid nutrient medium including as an assimilable source of carbon and energy a substance which is a member of a group consisting of (1) fats and (2) fatty acids having at least 14 carbon atoms in the molecule, the amount of any other assimilable source of carbon and energy in the medium being substantially less than the total caloric requirement of the culture. The said substance may provide the whole of the assimilable carbon source, or part, the balance being carbohydrates such as lactose and glucose.  Specified fats are lard oil, soybean oil, linseed oil, cottonseed oil, peanut oil, coconut oil, corn oil, castor oil, sesame oil, crude palm oil, tallow, sperm oil, olive oil, tristearin, tripalmitin, triolein and trilaurin.  Suitable fatty acids are stearic, palmitic, oleic, linoleic and myristic.  Comminuted whole seeds especially beans, peanuts cottonseed and linseed may be used. The liquid oils or fatty acids are preferred; the solids may be melted before incorporating in the nutrient medium, or dispersed therein during the sterilization step.  Specifications 631,126 and 676,130 are referred to.
Patent GB-1116252-A (GB)
Title: Improvements in or relating to liquid level control devices
Inventor: EMMERSON WILLIAM CARMICHAEL
IPC: G05D9/02
Filed: 1965-01-29
Abstract: 1,116,252. Coating apparatus. VICKERS Ltd. 26 Jan., 1966 [29 Jan., 1965], No. 4158/65. Heading B2L. [Also in Division G1] In an adhesive applicator the level in a reservoir 31 is kept constant by means of a roller 4a which causes the valve 16a to open when the level of adhesive in the reservoir 31 falls below the level of the roller. The adhesive is picked up on roller 41 and coated on a material which passes between roller 41 and pressure roller 42. The adhesive is kept above its melting temperature by heater 48 controlled by thermostat 49.
Patent GB-575212-A (GB)
Title: Improvements in tool holders for use with machine tools
IPC: B23B27/08
Filed: 1944-03-07
Abstract: 575,212. Tools; tool holders. TURNER, F. March 7, 1944, No. 4168. [Class 83 (iii)] A lathe &c. tool-holder for a gapped circular tool D comprises a head B having a bore b<3> receiving a clamping bolt E for the tool and provided with a cylindrical stem b entering an axial bore in the rectangular sectioned shank A. The forward end a of the shank has a circular section to allow the head B to be adjusted rotatably about the axis of the shank, clamping being effected by a set-screw C extending to the rear of the shank and passing through a bore a<3> of reduced diameter. Rotation of the bolt E is prevented by a grubscrew in the head B engaging an axial keyway in the bolt. The tool D is recessed at both sides to receive the head e of the bolt and a cutting edge may be provided at each end of the gap in the tool.
Patent GB-548209-A (GB)
Title: Improvements in and relating to belting and the manufacture thereof
IPC: F16G3/00
Filed: 1941-03-28
Abstract: 548,209. Woven fabrics. DUNLOP RUBBER Co., Ltd., LORD, W., and BRAZIER, S. A. March 28, 1941. No. 4171. [Class 142 (iv)] [Also in Groups XXV and XXIV] Belting consisting of textile fabric and rubber or the like has the textile fabric formed of warp threads 1 and tubular members 2 arranged weftwise to receive bars 5 or strands of flexible material for securing the ends of the belt together. The members 2 extend completely from side to side of the fabric and are located within the thickness of the material. The tubular members may be formed by braiding, weaving or knitting and may have a rubber lining. Alternatively they may be formed by extrusion. Lubricating material such as talc, zinc stearate or graphite may be incorporated in the tubular member either during or after manufacture. The tubular members may be woven into the fabric only at spaced intervals. Additional end securing means in the form of links which hook around the fastener bars 5 or flexible strands, or plate fasteners with rivets arranged between the members 2 may be provided.
Patent GB-435686-A (GB)
Title: Improvements in clockwork movements
IPC: G04C3/06
Filed: 1935-02-11
Abstract: 435,686. Electric clocks. DELVINIOTTI, J. T., 5, Avenue du Colonel Bonnet, Paris. Feb. 11, 1935, No. 4344. Convention date, July 12, 1934. Addition to 421,348. [Class 139] The magnetic system of the clock described in the parent Specification is modified by locating one or more of the poles of the ferro-magnetic material on the balance in a plane or planes different from that of the non-magnetic balance disc whereby the angle subtended by these poles at the balance staff may be varied between 0‹ and 180‹ As shown in Figs. 1, 2, the magnetic mass 10, rigid with the circular balance 1, has superposed poles 10<a>, 10<b>, coacting with the stationary poles 7, 6 of the electromagnets 5, 4, and is counterbalanced by a weight 1<a>. In Figs. 3, 4, the poles 10<a>, 10<b> are angularly displaced 50‹ the counterweight 1<a> only lying in the plane of the balance 1. In Fig. 5, the poles 10<a>, 10<b> are at 180‹ to each other and connected by a magnetic core 10<c> rigid with the balance staff 11.