baber/WOPTO huggingface dataset:
Patent GB-986925-A (GB)
Title: Stabilising oxymethylene polymers
IPC: C08G2/00
Filed: 1961-04-21
Abstract: A process for improving the thermal stability of a solid oxymethylene polymer containing in the polymer molecule oxyalkylene units having two or more adjacent carbon atoms comprises heating the polymer under non-acidic conditions with water, an organic hydroxy compound or a mixture thereof to remove formaldehyde or its elements from the polymer until the polymer weight loss per minute falls below 5% of the weight loss during the first minute of heating.  Exemplified polymers are copolymers of trioxane with dioxolane and ethylene oxide. Exemplified hydroxy compounds are methanol, isopropyl alcohol and triethanolamine. The reaction preferably takes place in solution in any of the well-known water/solvent systems. The compounds ensuring the non-acidity of the medium exemplified are ammonia, tripropylamine, tetramethyl guanidine, sodium acetate and/or one of the alcohols mentioned above.  Specifications 903,668 and 964,004 are referred to.
Patent GB-112409-A (GB)
Title: Improved Fuel Injection Means for Internal-combustion Engines.
Inventor: WATKINSON WILLIAM HENRY
IPC: F02M67/00
Filed: 1916-10-06
Abstract: 112,409. Watkinson, W. H. Oct. 6, 1916. Cylinders receiving liquid fuel.-Liquid fuel is injected through an orifice d into a chamber c of a fuel-spraying device to which spraying-air is fed from the cylinder through a passage i and a non- return valve j. This air is compressed further by a piston m secured to a rod carrying a larger piston l acted upon by the compression pressure in the cylinder. The valve k is mechanically actuated.
Patent GB-770592-A (GB)
Title: Imidazoline and pyrimidine derivatives
IPC: C07D239/06
Filed: 1955-05-20
Abstract: The invention comprises imidazoline and pyrimidine compounds of the formula <FORM:0770592/IV(b)/1> and hydrates and acid addition salts thereof, where R is hydrogen or an alkyl group of not more than 6 carbon atoms and n is 2 or 3, and their preparation by reacting a lower alkyl (i.e. 1-6 carbon atoms) or aryl ester of a p-aminobenzoic acid or a p-aminobenzonitrile with ethylene diamine or trimethylene diamine or with a salt thereof such as the p-toluene sulphonate.  The reaction is preferably carried out by heating the p-aminobenzoic ester or p-aminobenzonitrile with an excess of the diamine.  The products may be converted into salts and hydrates by known methods. In examples: (1) p-aminobenzonitrile is heated with ethylene diamine mono-p-toluenesulphonate to give 2-(4-aminophenyl) imidazoline p-toluene sulphonate; (2) the product of (1) is converted into the free base monohydrate; (3) the product of (2) is distilled to give the anhydrous base; (4) 4-(n-butylamino)benzonitrile is heated with ethylenediamine p-toluenesulphonate to give 2-[4-(n-butylamino)-phenyl]-imidazoline as its hydrochloride; (5) 4-(n-butylamine) benzonitrile is heated with 1 : 3-diaminopropane bis-p-toluenesulphonate to give 2 - [4 - (n - butylamino) phenyl] - 3 : 4 : 5 : 6-tetrahydropyrimidine p-toluene sulphonate; (6) the product of (5) is converted into the dihydrochloride; and (7) and (8) the product of (3) is converted into its bitartrate and phosphate respectively.  Starting material.  4-(n-Butylamino) benzonitrile is made by treating 4-aminobenzonitrile with n-butyl bromide.
Patent GB-917073-A (GB)
Title: Improvements in and relating to inductive devices
Inventor: FISHER FRANK JAMES
IPC: H01F38/10
Filed: 1960-04-26
Abstract: 917,073. Transformers; inductors. GENERAL ELECTRIC CO. Ltd. March 28, 1961 [April 26, 1960], No. 14611/60. Class 38 (2). A combined choke and transformer unit having a choke 1 (Fig. 1) and transformer 2 has a laminated core limb 4, carrying a choke coil 8 and having sections 5, 6 separated by an air gap. The section 5 forms an integral part of a member 9, which also includes the transformer core 10 having winding 9, and is built up from a pack of strip laminations bent to a P-shape. The core limb 4 and choke coil 8 are surrounded by a tubular yoke 3 associated with the choke 1. In Fig. 3 is shown a modified form of core limb construction wherein two P-shaped members 9 each containing half of the core limb laminations are placed back-to-back.
Patent GB-826917-A (GB)
Title: New hydroquinone compounds and process for their manufacture
IPC: C07D203/14
Filed: 1956-05-10
Abstract: The invention comprises 2 : 6-bis-ethyleneimino-hydroquinones of which the ethylene radicals are unsubstituted or each contains one alkyl radical of 1-4 carbon atoms, containing in the 3- and 5-positions halogen atoms or lower alkoxy or alkylmercapto groups of 1-4 carbon atoms and salts thereof.  The compounds are made by treating the corresponding benzoquinones with a reducing agent, for example, sodium dithionite in an alkaline medium or hydrogen in the presence of a nickel catalyst.  The reduction reaction is preferably carried out in an atmosphere of nitrogen or hydrogen. In a modification of the process a 2 : 6-bis-ethyleneimino-p-benzoquinone, substituted in the 3- and 5-positions by halogen atoms, is treated with an excess of an alkyl mercaptan, preferably in the presence of a condensing agent such as an alkali-metal and in a solvent such as alcohol to give directly the 3 : 5 - bis - alkylmercapto - 2 : 6 - bis-ethyleneimino-hydroquinone.  The products may be converted into their salts with metals, e.g. by treatment with alkali-metal hydroxides.  They are used pharmaceutically for the treatment of cancer diseases or amoebic diseases.  Specified products include 3 : 5-dibromo-, 3 : 5-diethoxy- and 3 : 5-di-ethylmercapto-, 2 : 6-bis-ethyleneimino - hydroquinone.  Specification 825,557 is referred to.
Patent GB-715035-A (GB)
Title: Improvements in or relating to apparatus for adjustably shielding the radiator of a motor vehicle
IPC: B60K11/08
Filed: 1951-06-20
Abstract: 715,035. Screens for motor-vehicle radiators. HALLE, K. P. May 29, 1952 [June 20, 1951], No. 14644/51. Class 64(3)  The free end of a roller blind 2 in front of the radiator 1 of a motor vehicle is attached to a fixed part at or near the bottom of the radiator, and the roller 3 is rotatably mounted on a bracket 5 and rotatably biased relatively to the bracket in the direction to wind the blind up. The bracket is attached to a flexible lead 6, which can be pulled manually to draw the roller against its bias away from the free end of the blind to cover the radiator, and can be paid out to allow the roller to move, solely under its rotatable bias, towards the free end of the blind and uncover the radiator. The flexible lead 6 is a chain which passes through tubular guides 7, 8 and a key-hole shaped hole in a bracket 13. When the chain is to be anchored in an adjusted position, it is shifted into the narrow part of this hole.
Patent GB-514841-A (GB)
Title: Improved electro-magnetic switch mechanism
IPC: H01H63/20
Filed: 1938-05-17
Abstract: 514,841. Electromagnetic switches. TANNAHILL, J. B., AMES, W.A.B., and LAWLEY, W. E. May 17, 1938, No. 14656. [Class 38 (v)] In a switch in which successive energizations of an electromagnet 4 rotate a shaft 10 step by step by ratchet mechanism, so as to move a contact bridge carried by the shaft alternately " on " and "off," the shaft is positively held in each stationary position by a roller 16 engaging a cam 12 on the shaft, the roller being pressed towards the cam by a weak spring 18 and also positively driven towards the cam by an adjustable stud 28 on the pivoted lever 1 carrying the armature 5 each time the armature is attracted. The lever 1 is pivoted at 10 and biassed by a spring 22 and is connected by a multiplying linkage 24, 21, 26 to a member 20 loosely mounted on the shaft 10 and carrying a pawl 19 which engages the ratchwheel 13 on the shaft.
Patent GB-221266-A (GB)
Title: Improvements in and relating to steam circulating systems for locomotives
IPC: F01B25/00
Filed: 1923-06-04
Abstract: 221,266. Stenning, H. A., and Marine & Locomotive Superheaters, Ltd. June 4,1923. Fluid-actuated valves.-An automatic snifting valve for use in connection with a steam circulating-system for locomotives comprises a piston valve 7 adjustably loaded by a spring 14 so that when the pressure in conduit 12 falls below a predetermined value ports 8 in the valve member are brought opposite an annulus leading to a pipe 16. Specifications 192,665, and 201,523, [Class 110 (iii), Turbines &c.], are referred to.
Patent GB-853140-A (GB)
Title: Improvements in, or relating to, electric junction and like boxes
IPC: H02G3/06
Filed: 1958-05-08
Abstract: 853,140. Junction boxes. GARRATT, W. J. May 8, 1959 [May 8, 1958], No. 14694/58. Class 38(1) An electrical junction box 1 comprises one or more split entry sleeves 4 having clamping lugs 8, the rim of the outer end of each sleeve being formed with one or more extensions 7 adapted to be turned inwardly of the bore of the sleeve after the insertion of a bushed cable end into the bore so as to minimise inadvertent withdrawal of the bush 9 from the sleeve.
Patent GB-1526456-A (GB)
Title: Laundering iron
IPC: D06F75/34
Filed: 1976-04-12
Abstract: 1526456 Steam irons EXTEND SA 12 April 1976 14753/76 Heading D1A A laundering steam iron comprises a metal soleplate 3 surmounted by a body 1 defining a reservoir which is extended at its rear end by a vertical neck 3, this in turn being continued by a hollow handle 4 which at the same time serves as a conduit for the inlet of water to the reservoir and for the escape of steam through an aperture 8.
Patent GB-600945-A (GB)
Title: Improvements in and relating to pulse radar object locating systems
IPC: G01S13/70
Filed: 1945-06-11
Abstract: 600,945. Radiolocation. SPERRY GYROSCOPE CO., Inc. June 11, 1945, No. 14804. Convention date, June 9, 1944. [Class 40 (vii)] In a pulse radar system, wherein the receiver is rendered inoperative except at intervals 'determined by a " gating " voltage which is derived from an oscillator that tends to oscillate at a frequency which is slightly different from the recurrence frequency of the echo pulses, a control voltage is developed depending upon the " gated " output of the receiver, and this control voltage is so applied to the oscillator that, when an echo signal is received during the " gated-on " interval, it tends to alter the oscillator frequency in such a direction as to maintain the echo and gating voltage in coincidence. Transmitter trigger pulses (Fig. 3A) are produced by the generator 16, Fig. 1, and trigger the transmitter 11 causing it to produce pulses having an envelope as shown in Fig. 3B. Pulses from the generator 16 are applied to the " wide gate " generator 23, producing " wide gate " pulses (Fig. 3c), which allows the receiver 12 to operate only during certain portions of a cycle. The trigger generator also synchronizes a sweep wave generator for the cathode-ray indicator 13. The circuit also comprises a variable frequency oscillator 25, a mixer circuit 26, a pulse amplifier 27, a rectifier 28 and a delav line 29. The oscillator 25 which is preferably a blocking oscillator produces range gate pulses (Fig. 3D) at a slightly higher repetition frequency than that of generator 16. These are applied to gate the receiver 12, either in the I.F. stages 17 or in the video stages 18. Thus, echo pulses (Fig. 3F) will be gated, the output from the receiver consisting of the single pulse 86 only. This is applied to the indicator 13 and also to the mixer 26 to which is also applied the range gate pulse delayed by the line 29 as shown in Fig. 3E. Only if the pulse 86 occurs during the delayed gate pulse interval will it be passed by the mixer. The output pulse (Fig. 3G) is amplified at 27 (Fig. 3H) and applied to the rectifier circuit 28, the output of which is used to bias the grid of the blocking oscillator 25 negatively, thus causing its period to increase. Eventually, the frequency is reduced so much that the gate pulses move to the right in the Figure, and when the delayed gate pulse interval no longer includes the pulse 86, the output from the mixer ceases. The rectifier output consequently rises and the oscillator frequency increases so as to restore the relation between the signal and gating pulses. The oscillator 25 may alternatively normally operate at a slightly lower frequency than that of the generator 16, in which case the rectifier 28 is arranged to provide a positive output. When the gating pulses do not coincide with any set of signal pulses, the apparatus commences to search in range owing to the difference in frequency between the gating and transmitted pulses, the gating pulses moving to the left in the Figure until coincidence occurs between a signal and a gating pulse.
Patent GB-1067331-A (GB)
Title: Optical variable transmission resin compositions
IPC: C08K5/5317
Filed: 1965-04-07
Abstract: The absorption wavelength of a compositin comprising a thermoplastic resin and 11,31, 31-trimethyl - 6 - nitro - spiro[2H - 1 - benzopyran-2,21-indoline] is shifted from the yellow (580-585 mm ) to blue (420-425 mm ) or intermediate position of the spectrum by adding to the composition from 0.1 to 10 equivalents, based on the weight of the indoline compound, of a phosphonic acid of the formula <FORM:1067331/C4-C5/1> where R is a halogenated alkyl radical of from 1 to 4 carbon atoms.  The compostions are suitable for use in sun glasses, windshields lenses and photographic filters.  In examples, the thermoplastic resins used are polymethyl methacrylate, polyethyl acrylate, polyacrylonitrile, polyethylene, polypropylene, polystyrene, polyvinyl chloride, methyl methacrylate/styrene/acrylonitrile copolymer, butadiene/styrene copolymer and cellulose acetate butyrate.ALSO:The absorption wavelength of a composition comprising a thermoplastic resin and 11,31,31-trimethyl - 6 - nitro - spiro[2H - 1 - benzopyran - 2,21-indoline] is shifted from the yellow (580-585 mm ) to blue (420-425 mm ) or intermediate position of the spectrum by adding to the composition from 0.1 to 10 equivalents, based on the weight of the indoline compound, of a phosphonic acid having the formula <FORM:1067331/C3/1> where R is a halogenated alkyl radical of from 1 to 4 carbon atoms.  The components of the composition may be admixed as such or from solution, or the resinous component may be added as monomer or prepolymer which is then polymerized in the presence of the indoline and phosphonic acid compounds.  Fillers, stabilizers, dyes, pigments, antistatic agents, antioxidants &c. may also be included.  The compositions may be moulded or cast into forms such as sheets, films and fibres for use in such applications as sunglasses, windshields, lenses and photographic filters.  In examples, the thermoplastic resins used are polymethyl methacrylate, polyethylene, methyl methacrylate/styrene/acrylonitrile copolymer, polystyrene, polyethyl acrylate, polypropylene, polyvinyl chloride, polyacrylonitrile, butadiene / styrene copolymer and cellulose acetate butyrate.  In some examples, the components are admixed in a methyl ethyl ketone/methyl isobutyl ketone solvent; in others a methyl methacrylate, styrene, ethyl acrylate or acrylonitrile prepolymer is polymerized in bulk in the presence of the indoline and phosphonic acid components in a glass cell using azobisisobutyronitrile as initiator.
Patent GB-690563-A (GB)
Title: Liquid fuel pumps
Inventor: EVANS FRASER MACKIE
IPC: F02M55/00
Filed: 1950-06-14
Abstract: 690,563. Fuel injection pumps. C.A.V., Ltd. May 9, 1951 [June 14, 1950], No. 14837/50. Class 102 (i). A fuel injection pump has a non-return inlet valve b, disposed at or near the discharge end of the barrel n, through which the fuel can be supplied from an auxiliary pump e or other source at a pressure above atmospheric, and an escape port (or ports) k is provided in the barrel adjacent the position occupied by the plunger i at the end of the suction stroke so that during each suction stroke the barrel can be flushed by the flow of fuel through the said port. This prevents the release of occluded air from the fuel during the suction stroke and therefore the possibility of frothing. The inlet valve b is of annular form and is loaded by a spring c. The fuel is delivered through a passage f controlled by a delivery valve g.
Patent GB-119551-A (GB)
Title: Improvements in Reversible Envelopes, Letter Cards or the like.
Inventor: JOHNS EDWARD ROBERT
IPC: B42D15/08
Filed: 1917-10-13
Abstract: 119,551. Johns, E. R. Oct. 13, 1917. Envelopes.-In a blank for a reversible envelope of the kind having a central foldable portion a<1>, a<2>, flaps b<1>, b<2> gummed at the edges c, c' on opposite sides, and foldable side flaps d, the said side flaps d are made large enough to be written upon.
Patent GB-1061835-A (GB)
Title: Apparatus for the approximate determination of the levels of contamination of clothing or other articles by counting of alpha and beta particles
Inventor: FLEURY JACQUES
IPC: G01T1/178
Filed: 1964-04-10
Abstract: 1,061,835. Determining radiation levels photo-electrically. EUROPEAN ATOMIC ENERGY COMMUNITY (EURATOM). April 10, 1964 [April 11, 1963], No. 14895/64. Heading G1A. [Also In Division H1] Apparatus for the determination of levels of contamination of articles e. g. clothing, by α- and #-particles, comprises a proportional particle detector of the gas flow type, the output pulses, amplified by pre-amplifier PA, from which detector are applied to two amplifier-discriminator channels for the subsequent measurement of the activities of the α and #-particles by counters E α and E#respectively. The apparatus is designed to eliminate pulses in an amplitude range in which both α- and #-particle pulses occur, by use of an anti-coincidence device. The α- and #-pulses can be divided up into three amplitude zones, zone 1, between certain amplitude levels d 0  and d 2  having mainly # pulses and negligible α, zone II between levels d 1  and d 2  (where d 1  > d 2 ) having both α and #pulses and zone III, above level d 1 , having mainly α pulses and negligible p. By eliminating zone II, α-particle pulses can be distinguished from #-particle pulses. Pulses pass from pre-amplifier PA and into two amplifier discriminator channels A 1 , D 1 , and A 0 , D 0 . An α or # pulse in zone II can pass through D 0  but not D 1 , although it can pass through D 2  to cancel the simultaneous pulse coming from the discriminator D 0 , in the anti-coincidence gate AC. The transistorized gate P in the channel prevents overloading of the channel A 0 , D 0  due to very large pulses caused by α-particles. It is found that there are certain counting losses due to the suppression of zone II by the anti-coincidence device, but these are unimportant in view of the self-absorption of the clothing tested. The amplifier A 0  has a high gain with respect to that A 1  since the level d 0  is much smaller than levels d 2  and d 1 . The construction of the detector is described (see Division H1).
Patent GB-428566-A (GB)
Title: Improvements in or relating to parachute harness
IPC: B64D17/22
Filed: 1934-05-17
Abstract: 428,566. Buckles &c. QUILTER, R. C., Bawdsey Manor, Woodbridge, Suffolk. May 17, 1934, No. 14908. [Class 43] A buckle for a parachute harness is divided into two unequal portions by an inclined cross member 11 which prevents inward movement of the usual cross straps or lift webs, the height of the cross member above the plane of the buckle frame 10 increasing progressively from one end to the other.
Patent GB-1100128-A (GB)
Title: Improved method of and apparatus for determining the shives content or the content of fibre bundles of a pulp
Inventor: ALFTHAN GEORGE VON
IPC: D21G9/00
Filed: 1965-04-08
Abstract: 1100128 Determining consistency of pulp suspension OSAKEYHTIO KESKUSLABORATORIO CENTRALLABORATORIUM AKTIEBOLAG 8 April 1965 14927/65 Headings D2A and A8B Apparatus for the determination of the shives content or content of the fibre bundles of a pulp, provides a restricted path including a slit 10, the slit being dimensioned to retain particles exceeding a pre-selected size, pressure air for passing a liquid suspension of pulp at a selected flow-rate through the slit 10, and means for widening the slit when a pre-selected decrease in flow through the slit 10 has been detected. In operation, the width of the slit 10 between a body 9 and tube wall 8 is adjusted to the pre-selected width and the height of an overflow tank 4 is adjusted to set the liquid level in tube 7. The pulp is fed from a storage chamber 1 through a dilution chamber 4 to the tube 7 where it is drawn down by air pressure towards the slit 10. If there are shives greater than the pre-selected size present in the suspension, the slit will become clogged up causing the liquid level to rise in the tube 7 actuating a switch 18 to operate a relay 20 opening a valve 15 which controls an air pressure supply supporting the body 9. The body 9 then falls thus widening the slit 10, the shives are rinsed away by the flowing liquid, and the level of the liquid falls to its original level. The time taken for the equilibrium level to be reached is a measure of the consistency of the pulp. The number of rinsings during the passage of the pulp suspension, each being indicated by operation of the relay 20, are connected by a counter 22 as a measure of the shive content of the pulp.
Patent GB-1012296-A (GB)
Title: Improvements in or relating to refractory furnace linings
Inventor: BOOTH CYRIL
IPC: F27D1/00
Filed: 1961-04-15
Abstract: 1,012,296. Furnace linings. STEETLEY REFRACTORY BRICK CO. Ltd. May 16, 1962 [April 25, 1961], No. 14961/61. Heading F4B. A furnace lining comprises refractory units preformed into a structure with a curable synthetic resin based adhesive, the structure being placed in the furnace after setting. The cementing agent comprises a synthetic resin, e.g. epoxy-, polyester- or phenol-formaldehyde resins, with associated hardener and finely ground refractory material constituting less than 80% by weight of the adhesive, examples being calcined magnesite or sillimanite, preferaly smaller than 72 B.S.S. mesh or iron powder smaller than 44 B.S.S. mesh.
Patent GB-529014-A (GB)
Title: Improvements in and relating to electric control devices particularly for tool-feed motors
IPC: B23Q15/00
Filed: 1939-05-19
Abstract: 529,014. Actuation of switches ; motor control systems. BRITISH THOMSON-HOUSTON CO., Ltd. May 19, 1939, No. 14990. Convention date, May 19, 1938. [Classes 38 (iii) and 38 (v)] A circuit controller having switching means adapted to be operated after a predetermined time interval, comprises a driving means connected with a device such as a planing machine, a driving gear arranged to be connected thereto, a travelling pinion with a clutch face, mounted on a threaded shaft, meshed with the driving gear so as to travel along the threaded shaft, until its clutch engages a clutch on a further pinion meshing with a switching gear wheel, causing a switch to open after a time interval dependent on the length of travel on the threaded shaft. In the example, when the end of a cutting' stroke of a planer is reached, a limit switch reverses the main motor, an electromagnetic clutch 17 is energized and a motor to feed the tool is started. The clutch 17 connects a shaft from the main planer motor with the gear shaft 16. The example shows two travelling pinions 18, 19 on shafts 20, 21 respectively, right and left handed to ensure switch operation in whichever direction the shaft is rotating. Assuming that pinion 18 moves on its threaded spindle 20 to the right, at the end of its travel its clutch 32 engages the clutch 30 of pinion 28, causing it to drive the gear wheel 35 so that a pin 38 disengages contacts 40, 41. The tool-feed motor is stopped and the clutch 17 deenergized. Meanwhile the gear 16 has been winding up a spring 53 through a gear wheel 52 and a release of the clutch 17 the spring rotates gears 52 and 16 to return the travelling pinion 18 to its initial position and permits the contacts 40, 41 to re-engage. In this way the feeding of the tool occurs during the return stroke of the planer. Adjustment of the switch timing is effected by means of a wheel 47 finned to the shaft 36 upon which the switching gear wheel 35 runs loosely and, through the shaft, alteration in the position of the switching member 39 and of the travelling pinions can be made.