baber/WOPTO huggingface dataset:
Patent GB-1524274-A (GB)
Title: Device for detecting defects in needles on a knitting machine which is in operation
IPC: D04B35/18
Filed: 1976-01-14
Abstract: 1524274 Flaw detector INSTITUT TEXTILE DE FRANCE 14 Jan 1976 [22 Jan 1975] 01453/76 Heading G1N [Also in Divisions D1 and H3] A device for detecting defects in needles of a knitting machine includes two Hall probes 7 mounted so that the needles pass successively in front of the probes during their operation. Signals from the probes pass via low pass filter 50 to a first comparator 14 also receiving a voltage from a reference source 17 and producing a fault pulse, when the signal amplitude exceeds the reference, to an OR gate 19 acting to stop the machine. The probe signals also pass to a differentiator 52 thence to a comparator 21 in a shaper 53 and providing a pulse sequence of recurrence frequency equal to that of the differentiated signals. The shaper output is applied to a monostable 22 and a retriggerable monostable 23 which latter responds to absence of a pulse from the train provided by the first monostable 22 to signal a fault to the other input of the OR gate 19 thereby stopping the machine. The shaper circuit may be a zero-crossing detector or a Schmitt trigger having triggering levels symmetrical with respect to zero. Use of the differentiation circuit makes it possible to transform probe signals having an appreciable amplitude variation but not passing through zero, such as the signal 54b, Fig. 2, into a zero-crossing signal whereby generation of a fault pulse is prevented, for example by a needle having an abnormal trajectory but otherwise operating satisfactorily. A further development of the pulse shaper is shown in Fig. 5 and which prevents the generation of a fault pulse due to a point of inflection, as 54c, in the probe signal. Such a signal is due to the passage of two closely spaced needles which would not necessarily cause a visible fault in the article produced. Thus Fig. 5 shows a peak detector having a threshold. Assuming an increasing voltage v e  at the input 57b of the comparator 57, its output voltage v s  is saturated and capacitor 58 is charged to a voltage v c  = v e -2V d , where Vd is the volt-drop across each of diodes 61 to 68, assumed identical. As v e  decreases, the capacitor voltage v c  remains constant until v e  has decreased below a voltage 2Vd. Now, the output voltage v s  changes its sign and the capacitor discharges to a voltage v e  + 2Vd. When the signal v e  once more begins to increase the capacitor voltage v c  remains constant until v e  has increased above 2Vd when the output voltage v s  again changes sign. Thus the comparator 57 supplies a sequence of pulses of which the sign changes in the interval between two adjacent peaks of the voltage v e  only if the amplitude variation, in the interval, of this voltage exceeds 2Vd. Clearly the threshold value may be selected by the number of diodes. Thus if a fourth diode is added to 63-65 and to diodes 66-68 the threshold voltage becomes 3Vd.
Patent GB-1182301-A (GB)
Title: Improvements relating to Photographic Processes and Apparatus.
IPC: G03C8/34
Filed: 1967-01-11
Abstract: 1,182,301. Processing photographic sheets. INTERNATIONAL POLAROID CORP. Jan. 11, 1967 [Jan. 11, 1966], No. 1482/67. Heading G2A. A viscous processing reagent is applied to a photographic sheet 12 through apertures in the wall of a rotating drum 1 which contains a supply of the reagent. It is thus deposited on the sheet in the form of a plurality of tiny individual spots, which are then spread out to form a uniform continuous layer. A stationary paddle 6 is provided within the drum, having an end portion 7 slidably engaging the wall, and a side-arm 8 spaced closely to the wall. As the drum rotates, the end 7 forces reagent into successive apertures as they pass below it. The material of the drum is chosen so that the reagent has little tendency to adhere to it, and adheres more readily to the sheet 12. This is then brought into contact with a spreader belt 16, which causes the spots of reagent to be spread into a uniform continuous layer, and so effect the processing of the exposed film sheet. By choosing suitable dimensions for the apertures, and a suitable pattern arrangement, a very precise deposition of reagent may be obtained. In Fig. 3 (not shown) the applicator is incorporated in a copying camera.
Patent GB-814689-A (GB)
Title: Improvements in or relating to the preparation of triiodothyronine
Inventor: RAZDAN RAJ KUMAR
Filed: 1957-01-15
Abstract: The invention comprises a process for the purification of crude triiodothyronine from contaminating diiodothyronine and/or thyroxine by forming a salt or salt-like complex between triidothyronine, ammonia or a suitable organic base and alkali metal ions, and separating the salt or salt-like complex from the contaminants by difference in solubility.  The crude triiodothyronine can be formed in situ by iodinating diiodothyronine with a solution of one molecular proportion of iodine in an aqueous alkali metal iodide. The resultant salt or salt-like complex can be recrystallized preferably from an aqueous solution containing ammonia or the appropriate organic base respectively and alkali metal ions. Suitable organic bases are primary and secondary amines having a PKh greater than 7.2, preferably methylamine, ethylamine, dimethylamine, diethylamine, isopropylamine, butylamine and ethanolamine.  Preferred alkali-metal ions are sodium or potassium ions and may be present in the form of a soluble alkali-metal salt.  In examples: (1) diiodo-L-thyronine is dissolved in ethylamine and treated with N iodine solution in aqueous sodium iodide to give a salt of triido-L-thyronine from which triiodo-L-thyronine is recovered; (2) diiodo-L-thyronine is similarly iodinated but methylamine, dimethylamine, diethylamine, isopropylamine, and butylamine are used instead of ethylamine; (3) triiodo-L-thyronine (containing about 10 per cent of diiodo-L-thyronine) is dissolved in ammonia, ethylamine, ethanolamine or diethylamine and treated with sodium chloride to give a crystalline salt; a further salt is similarly obtained by using ethylamine and potassium chloride.
Patent GB-1467533-A (GB)
Title: Disazo compounds
IPC: C09B33/153
Filed: 1975-01-14
Abstract: Novel disazo compounds suitable as dyestuffs, in particular for thermoplastics, of the formula (1) <IMAGE>  in which R denotes: (a) a group of the formula (1a) <IMAGE> in which X1, X2 and X3 represent hydrogen atoms or substituents; (b) a group of the formula (1b) <IMAGE> in which A1, A2 and A3 denote hydrogen atoms or substituents; or (c) a group of the formula (1c) <IMAGE> have excellent luminosity and resistance to light and heat and are resistant to migration. They are obtained by coupling a diazo compound of an amine compound of the formula R-NH2 with an appropriate 4,4'-bisacetoacetylaminobenzanilide.
Patent GB-545643-A (GB)
Title: Improvements in and relating to the waterproofing of external air-raid shelters
IPC: E04H9/12
Filed: 1941-02-08
Abstract: 545,643. Linings for metal shelters; waterproofing buildings. HULLAND PRODUCTS, Ltd., WHEATCROFT, E. H., and BENNETT, R. M. Feb. 8, 1941, No. 1721. [Classes 20 (i) and 20 (ii)] " Anderson " and like metal shelters which are partially sunken into the ground are made waterproof by a lining of interfitting concrete slabs below the ground level. The lining comprises side horizontals 10 which may be of reinforced concrete, shouldered to receive the bottom ends of side slabs 14 and the ends of floor slabs 12, and end slabs 17 having interfitting tongue and groove joints with the faces of the floor and wall slabs which also have tongue and groove joints 13 and 15 respectively. The joints may be lined with metal 19 or grouting may be run in ta render the lining waterproof.
Patent GB-843977-A (GB)
Title: "improvements in valves and tubular inflation devices for inflatable goods"
IPC: F16K15/20
Filed: 1959-01-02
Abstract: 843,977. Balls for games. MOSS, S. Jan. 2, 1959 [Jan. 20, 1958], No. 1824/58. Class 132(2). An inflation device for a playball 8 is moulded integrally from rubber or plastic material and comprises a patch 1 for attachment to the ball, a tubular inflation part 2, a stopper 6 and a strip 5 attaching the stopper to the part 2.
Patent GB-345396-A (GB)
Title: Improvements in the manufacture and production of crepe yarn
IPC: D02J1/22
Filed: 1930-01-18
Abstract: <PICT:0345396/IV/1> In the manufacture of cr<\>zepe yarn from natural or artificial silk, cotton or the like, the raw material is wound on bobbins and subjected between the winding and throwing operation to a sizing treatment.  A size is used which increases the extensibility, capacity for twisting, strength and smoothness of the yarn, and the throwing is effected while the fibres are still moist.  The yarn may pass from a bobbin 2 over a guide roller 3 to feeding rollers 4, 5, then through a size trough 6 and a guide eye 7 to a throwing eye 8 from which it is wound on a driven bobbin 9. Colouring may be effected at the same time, either in the same or in a separate bath. Known sizes consisting of adhesives and soaps, and water-soluble oils, paraffins or emulsions may be added.  Suitable adhesives are gum arabic, glue, gelatine, gluten, starch, dextrin, resin, and the like, and linseed and olive oils may be added to increase flexibility and smoothness.  The whole process may thus be carried out in the throwing works and steaming of the yarns is rendered unnecessary. Specifications 283,752, 320,100, and 320,869, [all in Class 120 (ii), Spinning, twisting, &c.], are referred to.
Patent GB-1132544-A (GB)
Title: Road signalling apparatus
IPC: G08B5/38
Filed: 1967-01-13
Abstract: 1,132,544. Warning lamps. M. OLLIVIER. 13 Jan., 1967 [21 Jan., 1966], No. 1849/67. Heading F4R. [Also in Division G4] An emergency lighting device for road vehicles comprises a support on which a projection lamp 1 is movably mounted, a flashing lamp 6 carried by the support and means 8 for the supply of current to the lamps from a remote source. The lamp 1 has a reflector and a front glass and is supported on pivots in bearings on the uprights 10, 11 of the support so that its angle of inclination can be varied. The uprights are carried by bases 13, 14 which may be foldable for storage in a vehicle, and are joined by a cross-bar 12 on which is mounted the flashing lamp 6 and which may also carry a socket 24 for e.g. a second flashing light. The lamp 1 is fitted with a switch to regulate the light intensity and may contain a battery for use in the event of failure of the current supply from the remote source. The battery may alternatively be mounted in a clip on the support.
Patent GB-1084825-A (GB)
Title: A uhf tuner
IPC: H03J5/04
Filed: 1966-01-14
Abstract: 1,084,825. Television tuners. OAK ELECTRO/NETICS CORPORATION. Jan. 14, 1966 [Jan. 14, 1965], No. 1871/66. Heading H3Q. [Also in Division F2] A U.H.F. tuner, covering the 70 U.H.F. television channels, has both broad and fine tuning controls for rotation of an element 13 to effect tuning, the broad tuner having associated with it a detent mechanism for locating it in positions corresponding to U.H.F. channels, and the fine tuning adjustment being operable without disturbing the selected and detented position. The rotor 13 operates the tuner circuitry (not shown), and is coupled to a circular plate 65 by means of two diametrically opposed pins 15, carried by a rectangular plate 14 integral with rotor 13, and which engage in diametrically opposed radial slots (67) in plate 65. The broad tuning control, shaft 45, has an integral gear-wheel 50, and a shaft 35, concentric with shaft 45 and carrying an indicator dial (not shown), has an integral flange 39 carrying a planetary gear-wheel 43 which engages with gear 50 and also with a stationary, internally toothed ring 30 concentric with shafts 35, 45. Flange 39 has an integral projection 64 (shown partially cut-away) engaging in a radial slot (66) in a plate 65, this slot (66) being perpendicular to the slots (67). Rotation of broad tuning shaft 45 therefore causes, through gears 50, 43, 30, rotation of shaft 35, and hence, via pin 64, disc 65 and pins 15, the rotation of rotor 13. Rotatably carried by flange 39 is a detent disc 70 having peripheral detents 71, which detents are engaged by a plurality of spring fingers (e.g. 82, 83, Figs. 1, 3, 4, not shown) tangential to the disc 70, the arrangement being such that only one finger is in an engaged position at each U.H.F. channel position of the broad tuning mechanism. The tuner then covers all 70 channels with far fewer detents 71, which detents may therefore be separated by large and strong teeth. In the embodiment described, two fingers are used, one lying in a detent and the other on the adjacent tooth at each U.H.F. station, so that there are half as many detents as the total number of U.H.F. stations. The fine tuning control, shaft 55, has a pair of friction discs 60 rotatable therewith, which discs engage therebetween a disc 88 rotatable on a pin (63) on flange 39. Disc 88 carries an eccentric pin 86 engaged in a radial slot (87) in plate 65. Pin 86 and its slot (87) are diametrically opposed to pin 64 and its slot (66). Rotation of shaft 55 causes rotation of discs 60 and hence disc 88, and plate 65 is then rotated, by pin 86, about pin 64, which is stationary, the broad tuning position having been selected, and hence causing rotation of rotor 13. Disc 88 carries tabs 89 which contact discs 60 to limit the range of fine tuning, which may, nevertheless, cover several U.H.F. channels.
Patent GB-963800-A (GB)
Title: Process for the removal of acetylenes and other readily hydrogenatable unsaturated compounds from hydrocarbon mixtures
IPC: C07C7/163
Filed: 1963-01-16
Abstract: A C3-C5 olefinic hydrocarbon or hydrocarbon mixture contaminated with more unsaturated compounds and containing higher boiling hydrocarbons is subjected to distillation to obtain the desired hydrocarbon(s) as a gaseous overhead which is partially hydrogenated under the pressure prevailing in the distillation and prior to condensation. Reflux for the distillation may be obtained by partial condensation of the overhead or by using part of the hydrogenated and condensed product or preferably a combination of the two such that the hydrogenation feed contains such an amount of more unsaturated compounds that heating or cooling is unnecessary.  Hydrogenation is effected at 30-250 DEG  C. and 1-30 atmos. absolute.  The purifications of propene in a C3-C5 feed and butadiene in a C4 feed are exemplified.
Patent GB-303660-A (GB)
Title: Improvements in and relating to wood-working machinery
IPC: B27B25/02
Filed: 1928-01-20
Abstract: 303,660. Pearce, J., and White & Sons, Ltd., T. Jan. 20, 1928. Feed-motions.-In a wood-working machine such as a fixed-knife planer, the pressure rollers a, b are positively driven, but suitable clutches may be provided whereby any or all of the rollers may run free. Springs i may be provided to allow for variations in the thickness of the work. In the example illustrated the roller spindles care driven by means of sprocket wheels thereon (not shown).
Patent GB-289167-A (GB)
Title: Improvements in or relating to front rollers of lawn-mowers
IPC: A01D34/62
Filed: 1927-01-24
Abstract: 289,167. Jerram, A. E. Jan. 24, 1927. Rollers, garden.-The guide roller of a lawnmower is made up of a number of roller elements each of which has a smooth outer shell 11 consisting of two pressings or castings of aluminium, aluminion alloy, magnesium-silicon alloy, or like light and non-oxidizable metal united together at 12 by welding &c., each roller element being provided with roller or like bearings the elements 16 of which are arranged in a chamber adapted to contain lubricant. A steel tube or bushing 15 is pressed into hubs 14 formed on end flanges 13, the long anti-friction rollers 16 being accommodated between the tube 15 and the axle 17. The ends of the tube are closed by projecting cup washers 18, so as to form a lubricating chamber. Felt washers 20 prevent the entrance of dirt &c. between the cup washers 18 &c. The anti-friction rollers 16 may have conical ends 19.
Patent GB-1011081-A (GB)
Title: Improvements in or relating to room heating means
IPC: F24B1/188
Filed: 1963-01-18
Abstract: 1,011,081. Air-heating apparatus; tubular heat-exchange elements. H. W. R. BOLAND. June 6, 1963 [Jan. 18, 1963], No. 2252/63. Heading F4S. A forced draught air heater comprises an air duct of heat resisting material, and is disposed in a solid fuel fire in approximately a horizontal plane, the said duct having inlet and outlet means outside the fire so that air may be forced, e.g. by an electric fan, to flow through the duct in a tortuous path produced by baffles. As shown, air is forced by a fan 17 along a U-shaped duct comprising the limbs 12 and 13. Warm air leaves the duct through the outlet 14. Baffles, positioned only in the limb 13 unless a particularly high flow of air is required, comprise a plurality of generally triangular plates (Figs. 2 and 3, not shown) welded into the duct, which may be of steel or of ceramic or fire clay. The fan may be switched on and off manually or by a thermostat, and may be replaced by an appliance such as a hairdryer or vacuum cleaner which can be connected to blow air through the duct.
Patent GB-402615-A (GB)
Title: Process and apparatus for keeping provisions and other perishable goods fresh by cooling
IPC: F25D17/00
Filed: 1933-01-24
Abstract: Cold air is supplied to a refrigerator through a main across which is disposed a removable perforate box charged with a germicide, e.g. permanganate of potash in the form of small shot, or cork chips impregnated with an adhesive disinfectant.
Patent GB-265204-A (GB)
Title: Improvements in or relating to discharge tubes having an enclosed arc discharge
IPC: H01J61/00
Filed: 1927-01-26
Abstract: 265,204. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. Jan. 29,1926, [Convention date]. Arc lamps; arc-lamp electrodes. -In electric discharge tubes with an enclosed arc discharge in a rare gas, one or more fixed auxiliary electrodes 3 are provided between the main electrodes 1, 2, the electrodes 3 being annular, rectangular or of other form allowing the discharge to pass and having, during the discharge, a negative potential with respect to the negative electrode. The electrode 3 attracts positive ions which are moving towards the anode and which tend to neutralize the space charge at the anode, the voltage drop and thus the heating of the anode at a given current being increased. The ring 3 between spherical tungsten electrodes 1, 2 may be kept at negative potential by an external lead; for example, the ring 3 and the cathode 2 may be connected respectiveJy directly and through a resistance 5 to the negative pole of a direct-current source supplying the arc. In a modification, the ring 3 may be insulated and without an external lead, being maintained negative by electrons during the direct or alternating-current discharge. Specifications 181,675 and 188,627 are referred to.
Patent GB-336517-A (GB)
Title: Improved means for regulating prime movers
IPC: G05D13/00
Filed: 1930-01-23
Abstract: 336,517. Siemens - Schuckertwerke Akt.-Ges. April 15, 1929, [Convention date]. Addition to 314,809. Fluid governors.-A modification of the governing system described in the parent Specification in which the fluid passing through the governor is shunted from the main stream from the pump. The main stream passes through the opening C, ports 1 and 4, and opening D; whilst the fluid passing through the governor is shunted from the opening C, through the quantity valve 5 and pressure control B to the opening D. The ports 1 and 4 are controlled by valves 9 and 10 on the spindle 11 so that the flow of the main stream can be controlled thus controlling the quantity of fluid passing through the governor and regulating the range of speed of the prime mover.
Patent GB-994622-A (GB)
Title: New derivatives of heparin and processes for their preparation
IPC: C08B37/10
Filed: 1964-01-21
Abstract: The invention comprises N-benzyl heparinamide. A long-chain quaternary ammonium salt of heparin is reacted with a lower alkyl chloroformate, and the resulting anhydride is reacted with monobenzylamine to give the corresponding quaternary ammonium N-benzyl heparinamide salt.  Formation of the anhydride is preferably carried out by treating a long-chain (9-27 carbon atoms) quaternary ammonium salt of heparin (Specification 904,112), with ethyl chloroformate in tetrahydrofuran at about 0 DEG  C. Reaction with monobenzylamine is preferably effected at about 0 DEG  C. without isolation of the intermediate anhydride.  The precipitated quaternary ammonium N-benzyl heparinamide may be treated in aqueous medium, with an alkali-metal carboxylate, e.g. sodium acetate to form alkali-metal N-benzyl heparinamide salt, precipitatable by an alkanol, e.g. methanol.  The product may be converted to free N-benzyl heparinamide by treatment with ion-exchange resin.  N-Benzyl heparinamide and non-toxic salts thereof possess anticoagulant and anti-lipaemic activity (see Division A5).ALSO:Pharmaceutical compositions comprise N-benzyl heparinamide or non-toxic salts e.g. sodium and potassium salts, thereof, together with a carrier.  The compositions possess anticoagulant and antilipaemic activity and may be administered rectally or by intramuscular, subcutaneous or intravenous injection, for treatment of thrombosis, phlebites, arterites and circulatory and cardiac disorders.  The preferred compositions are suppositories when the carrier is a suppository base, and injectable solution when the carrier is a sterile aqueous medium.  Specification 904,112 is referred to.
Patent GB-990906-A (GB)
Title: Heat-curable compositions
IPC: C08K9/06
Filed: 1964-01-21
Abstract: The heat-curable, elastomer-forming organosilicon compositions of the present invention are substantially identical to those of Specification 959,525, except that urea is used instead of cyanoguanidine as the curing agent.  Specifications 699,759, 783,868 and 925,433 also are referred to.
Patent GB-149584-A (GB)
Title: Improvements in electric switches
IPC: H01H50/34
Filed: 1920-01-28
Abstract: 149,584. Igranic Electric Co., (Cutler- Hammer Manufacturing Co.). Jan. 28, 1920. Contacts.-In electromagnetic and other switches, a movable contact finger 2 is fulcrumed at a point 11 upon an armature or other operating member 3 which is itself fulcrumed upon a stationary knife-edge 9. A spring 6, anchored to a fixed lug 13 and loosely attached by a screw 14 and nut 15 to the contact 2, serves to hold the contact finger in engagement with the stationary contact 1 while the armature is held by the electro-magnet 4. The spring also serves to throw the contact off when the armature is released. The line of action of the spring 6 passes close to the fulcrum 9. A curved U-shaped extension of the magnetic frame 7 forms a guide and stop for the movable members.
Patent GB-151198-A (GB)
Title: Improvements relating to pistons of uniflow steam engines
IPC: F16J1/02
Filed: 1920-01-28
Abstract: 151,198. Galloways, Ltd., and Pilling, H. Jan. 28, 1920. Pistons, balancing laterally; pistons, heating; pistons, attaching to rod.-In a uni-flow steamengine, the piston comprises two parts B<1>, B<2>, bearing on collars E<1>, E<2> on the exhaust side, and secured at the steam sides by nuts D', D<2>, or otherwise. In order to prevent cooling of the piston by the exhaust, the hollow interiors of the piston parts are closed by plates G<1>, G<2>. The weight of the piston and piston-rod is supported by a chair I, which engages under lugs L', L<2> on the piston parts, and is secured during the insertion of the piston by means of studs P. The chair is divided by ribs K into compartments, each of which contains a rubbing-block M, acted on by springs N contained boxes O, which are screwed into the chair. In order to allow for expansion and contraction, clearance is left between the chair and the piston parts, and the chair is pressed axially by springs Q. The exhaust space is fitted with an inspection opening as described in Specification 116,799.