baber/WOPTO huggingface dataset:
Patent GB-690376-A (GB)
Title: Magnetic recording and reproducing
IPC: G11B15/10
Filed: 1948-03-24
Abstract: 690,376. Magnetic sound recording apparatus. BRUSH DEVELOPMENT CO. March 24, 1948 [March 25, 1947], No. 8650/48. Class 40 (ii). A magnetic recorder in which the magnetic heads are demagnetized each time the recorder is switched off and in which the recording tape is moved away from the heads during this process. The "FORWARD" push button 101, Fig. 1, in addition to motor control actuates levers 46, 56, to press the tape into contact with the recording-reproducing head 38, the erasing head 37, and the drive capstan 40. On being tripped, as by pressing the "STOP" button 105, contacts 142 are closed by lever 46 and contacts 140 are closed by' the latch plate 110. This energizes a relay 150 which connects the A.C. supply across a bridge 160 which includes two non-linear resistors, and connects the heads 37, 28 across the output of the bridge so that a decaying surge of current is passed through the heads to demagnetize them. Switch 140 is damped by a dashpot 180 so that the demagnetizing current will last for about 3 cycles. Alternatively, the output of the bias/erase oscillator 76 may be used for demagnetization by switching off the H.T. supply to the oscillator and so allowing the output to decay. In another embodiment, Fig. 2 (not shown) the heads are demagnetized by the oscillatory current that flows when a condenser is discharged through them. In a further embodiment, Fig. 3, motor switching, amplifier switching and tape movement are effected by a set of cams 286, 280, 301, 245, 281, mounted on a shaft along with a toothed wheel 205 which is held against the spring 217 by a detent 210. This detent is tripped when the "START" or "STOP" buttons 326, 328, are actuated, either manually, or automatically by trip levers 225, 354,. which are in turn tripped by feelers 230, 346 whenever the tape spools are nearing exhaustion. On being released the cams lift the drive capstan 240 from driving contact with a flywheel 430, and allow the tape to move away from the erazing head 37, recorder head 238, and play back head 239, whilst the coils of these heads are connected by switch assembly 400 across the output of the bias and eraze oscillator 76. Simultaneously the switch 323 interrupts the H.T. supply to the oscillator so that the output has suitable decay characteristic. A condenser 420 increases the decay time. In a modification, the cams may be remotely controlled by a stepping solenoid. Specifications 638,288, 647,962, '670,573, 670,577, 676,761, and 690,415 are referred to.
Patent GB-526764-A (GB)
Title: Improvements in or relating to throttle control mechanism for aircraft engines
IPC: F02D9/00
Filed: 1939-03-18
Abstract: 526,764. Regulating. DANVERS, E. March 18, 1939, No. 8704. [Class 7 (vi)] In throttle-control mechanism for aircraft engines in which the throttle is actuated both from the pilot's lever and from an automatic boost control through a differential device, the pilot's control is connected to the differential device by a lever 20 and link 19 arranged so that the lever and link come into line and give a dwell in the throttle movement when this is fully open, and the differential device 16 is connected to the throttle 10 by an arm 14 and rod 12 arranged to give a dwell when the throttle is in its minimum open position. The differential may consist of a planet pinion 17 carried by an arm 18 connected to the link 19, the pinion engaging two sun wheels 15 and 16 connected respectively to the arm 14 and to another arm 23 actuated by the boost control 23a. Specification 511,794 is referred to.
Patent GB-542595-A (GB)
Title: Polyvinyl acetal resins
IPC: C08F8/28
Filed: 1940-05-16
Abstract: 542,595. Polyvinyl acetal resins ; methylol sulphonic acid. DU PONT DE NEMOURS &, CO., E. I., and STAMATOFF, G. S. May 16, 1940, No. 8758. [Class 2 (iii)] Resins are prepared by re-acting polyvinyl alcohol, or partially hydroly ed polyvinyl esters with an organic compound having an active carbonyl group, e.g. an aldehyde or ketone, in the presence of methylol sulphonic acid, such sulphonic acid being preformed except when the carbonyl compound employed is formaldehyde, when, if desired the sulphonic acid may be produced in s tu by employing a quantity of formaldehyde in excess of that required to condense with the polyvinyl alcohol and adding sulphur dioxide to the reaction mixture. The process of converting the polyvinyl ester, e.g. polyvinyl acetate, completely or partially into polyvinyl alcohol and effecting the condensation with the carbonyl compound may be effected in one step. In examples, resins are prepared by heating an aqueous solution of methylol sulphonic acid with (a) a mixture of polyvinyl alcohol, a liquid vehicle, and either formaldehyde, n- or iso-butyraldehyde, cyclohexanone, methylcyclohexanone, acetophenone, or benzophenone, or (b) a mixture of polyvinyl acetate, ethyl alcohol and n-butyrald ehyde. In a further example, a mixture of polyvinyl alcohol, water and formalin is heated with a previously prepared solution of sulphur dioxide in ethanol. Polyvinyl formate and propionate and valeraldehyde are also specified as starting materials. The resins are separated from the re-action mixture by known methods, e.g. by precipitation by water. Methylol sulphonic acid is prepared by passing sulphur dioxide into formalin. Specifications 436,072 and 477,446 are referred to.
Patent GB-414688-A (GB)
Title: Improvements in electric motors
IPC: H02K33/10
Filed: 1933-01-30
Abstract: 414,688. Motors with unwound armatures. LOEFFLER, F., 46, West 40th Street, New York, U.S.A. Jan. 30, 1933, No. 8763/34. Divided on 414,372 under which a Specification was laid open to inspection under Sect. 91 of the Acts, July 31, 1933. [Class 35.] Oscillating motors. -In a motor wherein the stator has pairs of polepieces spaced apart from one another around its periphery with an intermittently energized winding located between pairs of polepieces and coaxial with the unwound rotor, the rotor or oscillating member is star-shaped or is composed of separate bars and each of its arms or bars completes a magnetic circuit through one pair of stator polepieces in some positions of the rotor. In the form shown in Fig. 4, energization of the coil 6 causes each arm of the oscillating member 8 to bridge the ends 4 of U-shaped stator polepieces which are located in a groove in the moulded insulating body 1 and unidirectional motion may be obtained by the pawl 12 and ratchet wheel 21, the member 8 being returned by springs. In a modified form, the limbs of the U-shaped stator polepieces extend radially outwards and co-operate with a series of circumferentially spaced axial oscillator bars. In the form shown in Fig. 7, two stator units, each consisting of a ring of spaced polepieces 64, 66, are energized alternately to cause the rotor to move continuously in the same direction, the circumferentially spaced rotor bars 61 being connected to their hub by arms 67. Specification 414,372 is referred to.
Patent GB-1174105-A (GB)
Title: Process for the Dyeing and Printing of Fibrous Materials of Linear Polyesters
IPC: D06P3/54
Filed: 1967-02-23
Abstract: 1,174,105. Dyeing and printing synthetic materials, FARBWERKE HOECHST A.G. 23 Feb., 1967 [23 Feb., 1966], No. 8789/67. Heading D1B. Synthetic fibrous materials of cellulose acetate, polyamide or linear polyesters or mixtures with one another or with other natural or synthetic materials are dyed or printed by applying a padding liquor or print paste containing as carrier a phenol derivative in the form of a water-soluble alkali metal salt and a halogenated organic compound which acts as an acid donator 'by reacting with water with the elimination of hydrogen halide and a dispension, developing or vat dye, optionally drying the material and fixing the dye by steaming. The carrier may be the sodium salt of o or p-phenylphenol, chloroacetamide and phenyl-chloroacetate being used as acid donators. Steaming may be at temperatures up to 130‹C.
Patent GB-1086313-A (GB)
Title: A.c. control circuit
Inventor: BERTIOLI MICHAEL MURRAY
IPC: H03K17/725
Filed: 1964-03-03
Abstract: 1,086,313. Supply systems for consumption apparatus. JOSEPH LUCAS (INDUSTRIES) Ltd. Feb. 25, 1965 [March 3, 1964], No. 8876/64. Heading H2H. A system for controlling the alternating current flowing in a load 9 comprises a pair of semi-conductor controlled rectifiers 8, 13 in reverse parallel connection so arranged that when, during a positive half-cycle of the A.C. supply 5, 6, a positive pulse is applied to the gate of the rectifier 8 current will flow in the load 9 and capacitor 12 will be charged over a diode 11. During the succeeding negative half cycle of the A.C. supply the rectifier 8 will become non-conductive whilst the capacitor 12 will discharge through a resistor 14 and the gate and cathode of the rectifier 13. The rectifier 13 will thus become conductive and current will continue to flow in the load 9 during the negative half-cycle of the supply. No further current will flow in the load unless a further pulse is applied to the gate of the rectifier 8.
Patent GB-351404-A (GB)
Title: Improvements in the manufacture of chenille fur
IPC: D03D39/00
Filed: 1930-03-20
Abstract: 351,404. Tufting- machines. MORTON, J., Craigiehall, Cramond Bridge, West Lothian. March 20, 1930, No. 8915. [Class 112.] Chenille fur is made by sewing tufts of pile-forming threads p to a core c of yarn, string, &c. A length of pile thread is drawn from one of the openings 31 of a jacquard-controlled carrier 30 across a supporting horn 21 by a pair of grippers 32, the core c meanwhile being pulled out of the way by the guide 24 as shown in Fig. 3. When the core returns to a vertical position the two needles 1, 2 pass one on either side of the core and above the tufs p and through the loops of the sewing yarn T on loopers 3, 4 which move round the needles and drop the old loops thereon and in passing the recesses 5 in the needles take up new loops, the needles being then withdrawn and the tufts cut off by knives 33, 34. Before the next stitch, the needle 1, 2 are shogged to exchange places, one of them being raised slightly to permit of this. The hooks are moved laterally along with a cam-operated slide 8 and are raised and lowered about a shaft 13 by levers 18, 16 to give the hook ends a circular motion round the needles, and are moved to and from the needles by a lever 11 and rod 10. The tuft cutters 33, 34 are carried by bars 36, 38 oscillated by cams about a shaft 39. The mechanism may be arranged to sew two or more strips of fur simultaneously.
Patent GB-293123-A (GB)
Title: Improvements in and relating to tennis and like racket frames
IPC: A63B49/14
Filed: 1927-03-31
Abstract: 293,123. Dunlop Rubber Co., Ltd., and Cardwell, S. O. March 31, 1927. Rackets.-The frame of a tennis or like racket is provided with an outer peripheral groove 6 containing a reinforcing strip 8 of Duralumin or similar light metal, the strip terminating at corresponding points on each side of and near the neck, and being concealed by a wooden covering ply 9. The covering ply is stuck or otherwise secured to the frame or strip or both, and the ends of the ply are tapered both in width and thickness. The ply may be seated within the groove 6, Fig. 5, may overlap the groove, Fig. 4, or may extend from face to face of the frame, Fig. 3. The stringing holes 5, Fig. 3, pass through both the strip and the ply to the outside of the frame.
Patent GB-273794-A (GB)
Title: Improvements in or relating to needle lubricating devices for sewing machines
IPC: D05B71/00
Filed: 1926-04-06
Abstract: 273,794. British United Shoe Machinery Co., Ltd., and Nown, W. H. April 6, 1926. Lubricating needles.-In a device for lubricating the needle or other work engaging part of a sewing machine of the curved book needle type, lubricant is applied to the needle by a pad 8 carried by an arm 7 cam-actuated in timed relation to the movement of the needle. The arm 7 may for example be mounted on the shaft 6 of the cam-actuated arm 5 which controls the operation of the presser-foot. Oil is supplied to the pad from a reservoir 1 through a pipe 3 with which communication is established for a short interval as a plunger 13 having a duct 14 is moved across the outlet 2 of the reservoir. This movement is effected bv a flexible connection 15 with an arm 16 actuated on the starting and stopping of the machine, e.g. the tension con. trolling arm. The plunger duct moves across the opening in one direction on starting and in the other direction on stopping. The plunger fits airtight in its guideway so that no oil will pass from the pipe 3 on to the pad, except when the duct 14 and outlet 2 are in alignment. Specifications 23478/10 and 24331/12 are referred to.
Patent GB-835657-A (GB)
Title: Improvements in or relating to pourable concentrates suitable for addition to petroleum hydrocarbons
IPC: C10L1/16
Filed: 1958-03-20
Abstract: A pourable concentrate, suitable for addition to liquid petroleum hydrocarbons, comprises a powdered additive, which is dispersible in such petroleum hydrocarbons, the additive being intimately dispersed in a blend of an alkyl benzene (whose alkyl groups contain 3-24 carbon atoms in the chain) and another normally liquid hydrocarbon vehicle.  The alkyl benzene constitutes a minor proportion of the concentrate.  The additive may be a dye, antioxidant, gum inhibitor, anti-rust compound, ignition controller, scavenger, stabilizer or mixtures of these, and specific additives mentioned are tert. butyl phenol, phenyl naphthylamines, hydroquinone and dihydroxy anthraquinone.  They may be suitable for addition to mineral spirits, seal oil, fuel oil, hydrocarbon jet fuels or high boiling petroleum hydrocarbons. The alkyl benzene may be mono- or poly-alkylated and mixtures of alkyl benzenes may be employed.  The liquid hydrocarbon vehicle may be a lubricating oil.  In the examples the preparation is described of pourable paste concentrates from various dyestuffs, mineral lubricating oil, and isopropyl, n-, sec.- or tert.-butyl, C3 alkyl, C12 alkyl or C24 alkyl benzenes.  In some examples, the concentrates are thinned with kerosene.
Patent GB-493106-A (GB)
Title: Improvements in or relating to progressive speed change mechanism
IPC: F16H33/08
Filed: 1937-03-30
Abstract: 493,106. Variable-speed gearing. SALOMON, F. M. M. D. March 30, 1937, No. 9089. [Class 80 (ii)] In a continuous torque transformer between driving and driven shafts without positive connection, a directing device is used to vary the coupling so as to invert the resulting impulse. The driving shaft 20, Figs. 1, 2, carries a cylinder 22 with spring- urged pistons 23, 24 having forks 25, 26 for rollers 27, 28 engaging a camshaped member 38 with journals 36, 37 mounted in a fork 35 on the driven shaft 33. The shafts 20, 33 are parallel but not in line. The member 38 has a cylindrical part A<1>MB<1>, two spherical parts AA<1>, BB1, all three parts centred on 33, and a part AIB not centred on 33. A second set of surfaces is provided with the parts AIB and A<1>MB<1> transposed, ribs 39 being provided on A<1>MB<1> to prevent tilting of member 38 except when the rollers engage parts AA<1>, BB<1>. This tilting is produced by a lever 42 spring-pivoted to an arm 41 on journal 36 and engaging a cam 45 geared at 48 to an arm 49 engaging a stationary cam 51, cam 45 being carried by a disc 47 secured to the fork 35. When the driving and driven shafts are in alignment, Fig. 7, the springs are dispensed with and balls 56, 57, under centrifugal action, engage members 58, 59. The balls are carried in a double fork 55 carried eccentrically on the driving shaft 52, and the member 59 is formed and mounted in a similar manner to member 38. Member 58 has a single cam surface and is carried directly by the driven shaft 53. In the modification shown in Fig. 9, inertia forces are used. The driving and driven shafts 63, 64 are parallel but not in line. Shaft 63 carries two discs 66, 67 supporting a shaft 68 with crank 69 which has a journal 70 on a sector-shaped slider 71 in a groove 72 in a disc 73 mounted eccentrically on shaft 64. A cam 74, sliding without rotation on shaft 68, is engaged by rollers 76 mounted in a fork 77 secured to a flywheel 78 on a shaft 79 pivoted in the discs 66, 67. Cam 74 has an extension 81 grooved at 82 for a stud 83 on a lever 84 pivoted to disc 66 and carrying a stud 86 engaging a helical groove 87 formed on a shaft 89 having a clutch 91 in engagement with the shaft of an arm 92 carrying a roller 93 spring. pressed against a cam 94 fixed to the casing 65. Cam 74 should only be moved when the rollers 76 are on circular concentric parts of the cam. Cam 94 may be moved by handle or pedal to vary the speed. Several cams 74 and sliders 71 may be used to make the torque continuous. Specification 225,518, [Class 80 (ii)], is referred to.
Patent GB-1076374-A (GB)
Title: Mehtod of and apparatus for contactless marking of image points in photograms
Inventor: WEIBRECHT OTTO
IPC: G01C11/00
Filed: 1965-03-13
Abstract: 1,076,374. Photogrammetry. CARL ZEISS JENA VEB. March 3, 1965, No.9115/65. Heading G1F. A method of contactless marking of image points in photograms is characterized in that optical rays at right angles to the plane of the photographic layer are formed into bundles of a desired diameter and made to influence the photographic layer. The apparatus for carrying out this method comprises two viewing systems containing eye-pieces 1, 2 floating marks 3, 4 in the focal plane of the eye-pieces, first deviating mirrors 5, 6, intermediate lenses 7, 8, second deviating mirrors 9, 10 and objectives 11, 12. Photograms 13, 14 illuminated from below by lamps 15 and 16 lie in the focal plane of the objectives 11, 12. Beam splitting cubes 17, 18 are located in the optical ray paths to unite the radiation from radiation sources 19, 20 with the observation ray paths. The radiation sources may be marked by shutters 21, 22. In another embodiment Fig.2 (not shown) the viewing system and the illuminating system are on opposite sides of the photogram.
Patent GB-877131-A (GB)
Title: Manufacture of new pyrazolo-pyrimidines
Filed: 1957-07-16
Abstract: The invention comprises compounds of the formula <FORM:0877131/IV (b)/1> (wherein R1 is amino, mercapto, alkylmercapto or alkoxy containing at most 6 carbon atoms or amino mono- or di-substituted by hydrocarbon radicals each containing at most 6 carbon atoms which may be interrupted by nitrogen, oxygen or sulphur and R2 is the same or hydrogen) and salts thereof; and the preparation thereof by reacting 2-isopropyl-4-carbethoxy-3-amino-pyrazole or 2-isopropyl-3-amino-pyrazole-4-carboxamide with formamide or urea, reacting the 1-isopropyl-4-hydroxy- or -4:6-dihydroxy-pyrazolo-(3:4-d) pyrimidine so formed with a halogenating agent to replace the hydroxy group by halogen atoms and reacting the halogenated compounds with ammonia, thiourea or appropriate thioalcohols, alcohols or amines to replace the halogen atoms by the groups R1 and R2.  Suitable halogenating agents are halides of phosphoric acid.  Examples describe the preparation of the 4-amino-, 4-furfurylamino-, 4-methylamino-, 4-methoxy-, 4:6-dimethoxy-, 4:6-bis-dimethylamino-, 4-mercapto-, 4-dimethylamino-, 4-diethylamino-, 4:6-bis-(monomethylamino)- and 4:6-bis-(b -diethylaminoethylamino) - pyrazolo (3:4 - d) pyrimidines. Reference is also made to metal salts and salts with organic and inorganic acids, an extensive list of which is provided. Specification 854,632 also is referred to.ALSO:Pharmaceutical preparations for enteral, parenteral and local application comprise a compound of the formula <FORM:0877131/VI/1> (wherein R1 is amino, mercapto, alkylmercapto or alkoxy containing at most 6 carbon atoms or amino mono- or di-substituted by hydrocarbon radicals each containing at most 6 carbon atoms which may be interrupted by nitrogen, oxygen or sulphur and R2 is the same or hydrogen) or a salt thereof and a pharmaceutical carrier.  They may take the form of tablets, dragees, solutions, suspensions or emulsions and they may contain preserving, stabilizing, wetting or emulsifying agents and other therapeutically valuable substances.  Salts referred to include metal salts and salts with inorganic or organic acids (e.g. hydrohalic, sulphuric, phosphoric, nitric, perchloric, formic, acetic, propionic, oxalic, succinic, glycollic, lactic, malic, tartaric, citric, ascorbic, hydroxymaleic, dihydroxymaleic, pyruvic, phenylacetic, benzoic, p-aminobenzoic, anthranilic, p - hydroxybenzoic, salicylic, p-aminosalicylic, methane -, ethane -, hydroxyethane -, ethylene -, toluene - and naphthalene-sulphonic and sulphanilic acids).  Specification 854,632 also is referred to.
Patent GB-602465-A (GB)
Title: Improved rotary hydraulic power transmitter
IPC: F16H39/24
Filed: 1945-04-13
Abstract: 602,465. Rotary engines. COVENTRY GAUGE & TOOL CO., Ltd., RUSHTON, H. L., and WOODHOUSE, C. H. L. April 13, 1945, No. 9227. [Class 110 (ii)] A hydraulic motor or pump of the axiallysliding vane type comprises a rotor 14 supporting vanes 11 mounted on bearings 32 in slots 31, which are moved axially by cams 29, 30, in a stator 20, 23, or by hydraulically-actuated pistons, so that slots in the vanes periodically line up with fixed abutments 15. Inlet and exhaust ports 26, 27 for hydraulic fluid are connected with pressure and exhaust chambers P and E respectively on each side of a vane. The stator is built up of rings 20 ... 23 which is secured to a cover 18 by bolts 24. Axial port holes 25 connect inlet and outlet passages 19 to inlet and exhaust ports 26, 27. Fig. 3 shows the relative movements of vanes and cams over 360 degrees. The abutments may be fixed to the rotor (becoming vanes) and the vanes behave as axially-sliding abutments.
Patent GB-873437-A (GB)
Title: Vitreous materials for use in weed killing compositions
Inventor: BALL ERIC HAROLD
IPC: A01N59/22
Filed: 1957-03-21
Abstract: A weed-killing composition comprises a powdered vitreous material having the composition: silica, preferably in the proportion of not more than 75% by weight, a glass modifying alkali oxide, e.g. K2O or Na2O, or both, at least 10% and not more than 30% by weight, and up to 10% by weight of an oxide of arsenic supplied in the form of an arsenious compound, e.g. lead pyroarsenate or magnesium arsenate.  An alkali and earth oxide, e.g. CaO and/or MgO, may also be incorporated e.g. in the proportion of 5 to 10% by weight.  A colouring agent, e.g. cobalt oxide, may also be incorporated for identification purposes.
Patent GB-595158-A (GB)
Title: Improvements in or relating to spring clips for use as a clothes peg, for gripping documents and like uses
IPC: D06F55/00
Filed: 1945-04-16
Abstract: 595,158. Clips; clothes-pegs. BEST, F. April 16, 1945, Nos. 9388 /45 and 4324/46. [Class 44] A clip for use as a clothes-peg, or for gripping documents or the like comprises two jaw members A, B held together solely by a spring having a substantially circular central portion E from which extend substantially straight arms E<2>, the spring being received in recesses or slots in the jaws so as to be practically entirely enclosed thereby. The jaws have extensions D serving as finger-pieces for operating the jaws. As shown, the spring arms extend through slots in the jaws and are anchored therein by their bent-over ends F. Fig. 2 shows a clip suitable for a clothes-peg. Fig. 4 shows a clip in which the jaws A, B are extended and formed with semi-cylindrical portions A<1>, B<2> to provide a split tubular housing for the cylindrical portion E<1> of the spring. The finger-pieces D are centrally disposed and house similarly disposed spring arms E<2>. A tubular rubber lining with flanged ends may be inserted through the cylindrical parts A<1>, B<1>, E<1> and the arm of a window fitting or display stand may be passed through said lining when the clip is used for display purposes. The finger-pieces may have holes therein to allow the clip to be suspended. The clip may be of stainless steel; anodized aluminium, or other metal, or of wood or plastic. The spring may be of stainless steel or zinc finished.