baber/WOPTO huggingface dataset:
Patent GB-593909-A (GB)
Title: Means for exciting synchronous alternating current machines through rectifiers
IPC: H02K19/28
Filed: 1944-12-21
Abstract: 593,909. Alternators. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET, and FORSSELL, H. Dec. 21; 1944, No. 25615. [Class 35] In a synchronous A.C. machine self-excited through rectifiers fed from a voltage transformer and a current transformer, the latter is normally inoperative, but becomes automatically effective on the occasion of a short-circuit across the machine. In Fig. 1, the field winding 2 of the alternator 1 is supplied through rectifier 6 by current transformers 5 having their secondary windings in series with those of a voltage transformer 3. Normally, the current transformers are ineffective because a tertiary winding 10 on each is short-circuited through anodes 11 in rectifier 6-possibly through a regulating resistance and a D.C. source ; the path through these anodes is blocked by grid control means (not shown) if the alternator voltage is considerably reduced. The transformers are shown connected Y/Y, but may be connected Y/Z. In Fig. 4, the transformers supply the field winding 2 through rectifier 4, the current transformer secondary windings being shortcircuited only while the rectifier 6 is in operation. Other arrangements use separate rectifiers connected in parallel to the field winding. In one modification, the current transformer secondary windings are short-circuited by voltage-responsive resistances while their terminal voltage exceeds a certain value; in another, the current transformers are normally kept out of action by D.C.-supplied saturating coils on their cores. The alternator may, for starting, be initially excited by a battery.
Patent GB-677346-A (GB)
Title: Pole star corrector and course finder
IPC: G01C21/02
Filed: 1949-10-06
Abstract: 677,346. Stellar compasses; protractors. HARRIES, B. T. Oct. 2, 1950 [Oct. 6, 1949], No. 25711/49. Classes 97 (ii) and 97 (iii). An instrument comprising a base consisting of a semi-circular protractor, Fig. 1, with an extended rectangular base, and a disc, Fig. 2, the parts being rotatably mounted about an axis passing through the centres of curvature thereof is so graduated that when Polaris is sighted through an aperture coinciding with the axis of rotation and a thick dark line C covers one of two selected complementary stars, the angle as read on the protractor opposite index A2 or B is approximately equal to the hour angle of Polaris from true North. This angle when used with tables on the ruler portion of the base of the instrument gives the correction to be applied to the true sextant altitude for latitude and the bearing of Polaris, respectively. The thick dark line A<SP>1</SP> is arranged vertically when an observation is being taken and the complementary stars are Beta Ursµ Minories and Gamma Cephei, corresponding to indices A<SP>2</SP> and B, respectively, further points D, E covering the variation over a period of ten years. The base may be made of opaque material, a portion on each side of the thick line A<SP>1</SP> being cut out for vision, or of transparent material, in which case the markings may either be made on the surface thereof or a chart of the markings may be placed between two pieces and a portion of the chart cut out for vision. The transparent disc has a thin diametral line as continuation of line C and a number of parallel lines at right-angles thereto, which are utilized for chart work, the disc and base being rotatably secured together by a centrally-aperture nut and bolt.
Patent GB-832410-A (GB)
Title: Improvements relating to flushing arrangements of water closets
Inventor: HARRISON FREDERICK CHARLES
IPC: E03D1/30
Filed: 1957-08-15
Abstract: 832,410. Valve-discharge water-wastepreventers. SHIRES & CO. (LONDON) Ltd. July 31, 1958 [Aug 15, 1957], No. 25764/57. Class 26. In a flushing arrangement for a water closet comprising a cistern a with an outlet valve c operated by a knob b, a member f shaped as a suction chamber is arranged above the valve c which is of flexible material, so that when the valve c is raised by its stem e, it flexes into the chamber displacing air therefrom so that the valve c is held elevated by the vacuum therein until the vacuum is broken when the water level is below the valve c. The member f is mounted through lugs m upon distance pieces g secured by screwed studs h, having nuts n, to lugs k on the valve seat d, a tube o extending from it to break the suction in the chamber when flushing is completed. The knob p is connected to the stem c, which can act as an overflow tube, through a lost motion connection permitting the valve c to remain open when the knob p is released.
Patent GB-1498170-A (GB)
Title: Digitizing tablet apparatus
IPC: G06F3/033
Filed: 1976-06-22
Abstract: 1498170 Digitizing point co-ordinates INTERNATIONAL BUSINESS MACHINES CORP 22 June 1976 [7 July 1975] 25782/76 Addition to 1492730 Heading G1N [Also in Division G4] In a digitizing tablet apparatus having a sensor (e.g. manual "pen") capacitively coupled to an x-y grid of wires, a plurality of x and y drivers can be controlled to apply an alternating voltage signal to selected wires, whereby wires to one side of the sensor position are not activated and wires to the other side are, in a selected dimension, each driver of at least one dimension being coupled to a plurality of the wires in a repeating pattern so that transitions from non-active to active wires occur at a plurality of positions, there being means for identifying the address of the non-active to active transition of the sensor position. As disclosed, there are 24 x drivers, each coupled capacitively to a corresponding x wire in each of a plurality of groups. A control register includes 12 bit positions to control respective ones of 12 of these drivers directly and to control respective ones of the other 12 via EXCL-OR gates controlled from a further bit position in the register (so that the second 12 of the drivers receive the bit pattern applied to the first 12, or its bit complement). Those drivers receiving a "1" bit apply the alternating voltage signal (a pulse train) to the respective wires of the grid. Similar arrangements for the y dimension can similarly be controlled from the register. Two bits in the register are decoded to select between x and y. (Alternatively, separate x and y registers can be used). The sensor output is converted to D.C., digitised and sent to a processor. For each dimension, triangular plates are provided spanning the whole dimension and capacitively coupled to the wires for applying the alternating signal to the sensor with an amplitude depending essentially linearly on the sensor's position in that dimension (by virtue of the variation in the widths of the plates). The following operations are performed for each dimension in turn: (a) the triangular plates are used to determine between which two wires the sensor is positioned, (b) the processor loads the control register to provide a non-active to active transition (in the sequence of wires) at that position and at corresponding positions in the other groups, there being active to non-active transitions midway between, (c) the processor loads the control register to activate all the wires (of the dimension), (d) the ratio of the sensor output in operation (b) over that in operation (c), when multiplied by the distance between adjacent wires, gives the fine component of the sensor position, the coarse component being given by operation (a).
Patent GB-420802-A (GB)
Title: Improved device for the production or amplification of ultra short waves
IPC: H01J25/68
Filed: 1933-06-06
Abstract: 420,802. Thermionic valves. HEIL, O., 41, Reinhauser Landstrasse, G÷ttingen, Germany. June 6, 1933, No. 25788/34. Convention date, June 16, 1932. Divided out of 420,753 and addition to 420,681. [Class 39 (i)] A tube for short-wave use comprises a cathode, an electron-emitting counter - electrode and an intermediate electrode with an aperture corresponding to the shape of the cathode, the cathode and counterelectrode being arranged symmetrically about the aperture and both being situated in longitudinal recesses in conducting bodies. In one form, filaments 7, 8 are arranged in recesses in bars 1, 2 and the intermediate electrode consists of two rods 3, 4 joined by bridge pieces. A magnetic field NS may be provided in the direction of movement of the electrons. A Lecher wire system is coupled to the electrodes 1, 2 which are at the same potential as the filaments 7, 8. The members 1, 2, 3, 4 may be so shaped that the field between electrodes 1 and 2 is of parabolic form, or they may be cylindrical where this shape gives an approximately parabolic field.
Patent GB-205806-A (GB)
Title: Improvements in double toothed gearings
IPC: F16H1/22
Filed: 1923-10-16
Abstract: 205,806. Allmõnna Svenska Elektriska Aktiebolaget. Oct. 19, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Toothed gearing. - In double reduction helical gearing employing single helical wheels 3, 10 on the driving and driven shafts 1, 2, the two or m o r e intermediate shafts 6, 7 are carried in - and move axially with bearings 20 - - 23, which may be adjusted axially by hand to balance the loads transmitted by each shaft or, as shown, may be interconnected by a lever 26 pivoted at its centre 28 on the casing 27, so as to adjust the loads automatically.
Patent GB-422499-A (GB)
Title: Improvements in and relating to free-wheel devices for bicycles
IPC: F16D41/26
Filed: 1933-09-19
Abstract: 422,499. Free-wheel mechanism for cycles. POWELL, A., 62, Waterloo Road, Stockport. Sept. 19, 1933, No. 25830. [Class 136 (ii)] In free-wheel driving- mechanism for cycles, of the type in which the ratchet teeth are formed with an abutment face at each end to enable the freewheel to be locked, when a fixed-wheel drive is required, by means of an additional pawl acting in opposition to the usual pawls, the additional pawl is mounted on a shaft A<1> provided with a bent end A<2> adapted to form a lever arm whereby the pawl is rocked into and out of engagement with the ratchet teeth by control means actuated from a lever on the handlebar &c. The arm A<2> normally engages a tapered collar I slidably mounted on a distancesleeve H on the wheel spindle H<1> and adapted to be retracted against the action of a spring K by means of a member Y, which engages a flange J on the collar, is linked to a bracket X on the fork H<2>, and is actuated by a Bowden or other transmission V ; the additional pawl is then rocked into engagement with the ratchet by a spring acting on it. The shaft A<1> passes through an opening in the side plate D of the free-wheel casing, and this opening is closed by a plate which is formed with a bearing for the shaft A<1>. The free-wheel casing may be prevented from screwing off the hub when the fixed drive is in operation, by means of a through bolt &c.
Patent GB-1028204-A (GB)
Title: Veterinary coccidiostatic compositions
Inventor: DAVIS MICHAEL
IPC: A61K31/635
Filed: 1963-06-28
Abstract: A liquid concentrate suitable for addition to drinking water for use in the treatment or prevention of coccidiosis in poultry comprises sulphaquinoxaline and diaveridine (2,4-diamino-5-(3,4-dimethoxybenzyl) pyrinidine) in solution in a polyethylene glycol containing between 0.5 and 2.0 equivalent weights (based on the weight of diaveridine present) of a physiologically-acceptable acid and water.  The acid may be hydrochloric, sulphuric, phosphoric, methanesulphonic or isothionic acid.  The acid may also be included in the mixture in the form of an acid addition salt of diaveridine.
Patent GB-197884-A (GB)
Title: Improvements in and relating to double walled vacuuminsulated vessels
IPC: B65D47/12
Filed: 1922-09-25
Abstract: 197,884. Siegheim, F. June 23, 1922, [Convention date]. Drip-separating devices. - A closure for a vacuum flask comprises a sleeve 1 of cork, rubber, &c. in which is inserted a spout 2 having its mouth formed and arranged to prevent dripping, and a plug stopper 3 which closes the spout 2. The spout is held in place by projections 4, Fig. 1, formed thereon or apertures 5. Fig. 2, formed therein and entered by the material of the sleeve 1: the spout may be of tapered formation to prevent its being thrust too far into the sleeve 1.
Patent GB-1432161-A (GB)
Title: Process for producing a gas tight light transmitting optical fibre plate
IPC: C03B37/15
Filed: 1974-06-12
Abstract: 1432161 Bonding optical fibres HOYA GLASS WORKS Ltd 12 June 1974 [15 June 1973] 25955/74 Heading C1M A light transmitting plate is produced by arranging optical fibres or bundles thereof in a die and mechanically compressing while they are at a temperature between the softening and transition (10<SP>4</SP> poises) points of the fibre or between the transition temperature of the higher viscosity glass in a multi-glass fibre and the softening point of the lower viscosity glass. Preferably the compression is carried out at a reduced gaseous pressure (e.g. 10<SP>-3</SP> to 10<SP>-5</SP> Torr). The fibre bundles may be degassed prior to compression.
Patent GB-691661-A (GB)
Title: Improvements relating to irons
IPC: D06F75/40
Filed: 1951-11-06
Abstract: 691,661. Hand irons. HOOVER, Ltd. Nov. 6, 1951. [Nov. 13, 1950] No. 25962/51. Class 138 (ii). A counter-weight 31 is movable relative to a pivotally-mounted iron-supporting strut 20, from a position in which it biases the strut to a retracted position, to a position in which it allows the strut to move to its extended position. In the construction shown in Fig. 1, the counterweight in the form of a ball 31, can roll in a raceway formed by a tube 26 which is slotted at 27 for the reception of a nose-portion 24 of the strut 20. The ball has a wedging action between the nose 24 and the side of the tube 26 and its weight more than counter balances the weight of the strut 20 acting on the right hand side of the pivot. On tilting the iron about its end 18 (which is spaced above the level of the sole plate), the ball 31 rolls to the other end of the tube 26 to allow the strut to extend by gravity. The strut is retracted by pushing the iron forward about the end of the strut in contact with the ironing surface. In the construction shown in Fig. 5, the raceway 26 is carried by the portion 24 of the strut 20. Normally the ball 31 lies at the forward end of the raceway, but when the iron is tilted backwards, it rolls to the rear end and extends the strut 20 as shown. The strut 20 may comprise a double strut operating in a pair of slots. It may be supported on either side of the soleplate. The counterweight may be a roller.
Patent GB-259386-A (GB)
Title: Improvements in and relating to the manufacture of threads, filaments, and the like from viscose
IPC: D01D5/24
Filed: 1925-10-17
Abstract: 259,386. Courtaulds, Ltd., Hegan, H. J., and Bayley, F. Oct. 17, 1925. Cellulose xanthates, processes for making filaments from.-For the manufacture of hollow filaments from a viscose in which sodium carbonate has been incorporated, the spinning solution contains not more than 6 per cent of cellulose. In an example, the viscose to be spun contains 6 per cent of cellulose, 5 per cent of caustic soda, and 2.6 per cent of sodium carbonate; the coagulating bath is conveniently that described in Example 2 of Specification 406/11, the lustre and degree of inflation of the filaments depending on the proportion of zinc sulphate contained in the bath and on the age of the viscose. Specifications 8700/92, 20801/00, [both in Class 2, Acids and salts, Organic &c.]; 7748/10, 15752/10, 1436/11, 24291/14, 143,253, and 189,973 also are referred to.
Patent GB-892579-A (GB)
Title: Improvements in magnetically operated electric switches
Inventor: ABEL MARTIN LOUIS
IPC: H01H36/00
Filed: 1960-07-27
Abstract: 892,579. Magnetic switches. TANN CORPORATION. July 27, 1960, No. 26109/60. Class 38 (5). In a magnetic switch the contact controlling armature is held adjacent to one end of a pair of magnetized polepieces and is movable away therefrom when magnetic flux is diverted away from said one end by a movable permeable means associated with the other end of the polepieces. In Fig. 2 a ceramic magnet 40 has its poles in engagement with polepieces 37, 38 having faces 36 to which an armature 35 is normally attracted against the bias of a snap-action contact device 29. When a piston 45 or other magnetizable member approaches the faces 43 of the polepieces 37, 38 flux is diverted from the armature, allowing changeover contacts 32, 33, 34 to operate. A number of switches may be mounted side-by-side to be operated by a member sliding across their ends (Figs. 5 and 6, not shown), and the polepieces may be straight in a side projecting magnet assembly as in Fig. 4. In Fig. 7, the pivoted armature 84 is biased by a spring 85 and has two sets of bridging contacts 70, 78 which co-operate with pairs of fixed contacts 69, 71, 72. The magnet assembly may be adjustable with respect to the switch housing and support the switch (Figs. 11, 12, not shown). In Figs. 14 and 15 the faces 43 of the polepieces form parts of specially-shaped surfaces 104, 111 for co-operation with curved and toothed magnetizable members 106, 114. An adjustable screw in the end of the armature may be used to set the minimum gap between the armature and faces 36 (Fig. 16, not shown), and the switch may be filled with an insulating liquid. The switch may be operated at a set speed by the movement of teeth 130 (Fig. 17) on a shaft 126 past the ends 43 of the polepieces. In Fig. 18 the pivoted armature 142 is secured to an insulator 152 which engages a change-over contact spring 56 (not shown) so as to bias the armature end 148 away from the faces 36.
Patent GB-1057056-A (GB)
Title: Occult blood compositions using quinoline compounds for increased sensitivity
IPC: G01N33/72
Filed: 1964-06-24
Abstract: Compositions for detecting occult blood in body fluids comprise an indicator the oxidation of which is catalysed by the prosthetic group of haemoglobin, an oxidising agent for the indicator and a potentiating agent of the formula:-  <FORM:1057056/B1-B2/1> where R1 is H, CH3 or OH; R2 is H, CH3 or thiophenyl; R3 is H, CH3 or:- <FORM:1057056/B1-B2/2> R4 is H, CH3 or 0CH3; R5 is H or CH3; and R6 is H, CH3, OH or NH2. Specified indicators are o-tolidine, o-toluidine, p-toluidine, o-phenylenediamine, N:N1-dimethyl-p-phenylenediamine, p-anisidine, dianisidine, o-, m-, and p-cresols, a - and b -naphthols, catechol, guaiacol and pyrogallol.  Specified oxidizing agents are inorganic and organic peroxides, namely hydroperoxide of cumene, p-menthane diisoproplybenzene and 2:5-dimethyl hexane.  Specified potentiating agents include quinoline itself, quinine, cincholine and a number of other substituted quinolines.  In the composition, the organic hydroperoxide is preferably in the form of encapsulated particles prepared in dispersion using gelatin, algin, carrageenin, casein or albumin and hardened by treatment with a dialdehyde polysaccharide as described in Specification 981,955.  The procedure is described in detail. Other ingredients may comprise buffering systems (citrate, tartrate, phthalate, acetate, phosphate) giving a pH of 4-7 emulsifiers for the hydroperoxide (acacia mucilage, gum arabic, polyvinyl alcohol, carboxyvinyl polymer), surface active agents (sodium lauryl sulphate, dioctyl sodium sulphosuccinate, polyoxyethylenenonylphenol) which improve the evenness of application to carrier materials and solvents (chloroform, ethylene dichloride, ethyl acetate and benzene) for the indicator and potentiator.  The compositions may be in the form of tablets, a mixture to be added to water, or impregnated on to bibulous materials e.g. paper or wood.
Patent GB-590201-A (GB)
Title: Apparatus for dislodging farmyard manure
IPC: A01C3/04
Filed: 1944-12-30
Abstract: 590,201. Conveyers. DOULL, G., and CUSTER, D. M. Dec. 30, 1945, No. 26200. [Class 78(i)] [Also in Group XXI] Apparatus for dislodging farmyard manure comprises a frame adapted to be raised and lowered, cutting mechanism co-operative with said frame, and digging mechanism within said frame. Brackets 3, 4 and 5 on a tractor 1, Fig. 1, provide a support for an endless belt conveyer 9, the brackets 4 also providing a pivot 7 for a pair of arms 11, the outer ends of which support a box-like frame 13. The box may be raised or lowered by means of a cable 13<1> passing over a pulley 6 at the head of the bracket 5 and onto a winding drum. The box has a cutting mechanism on three of its sides and as shown in Fig. 3 comprises teeth 18 in the box and swinging cutters 19 pivoted to the box at 20. All the cutters are coupled by bars 24, the bars being connected together by a bell crank 33 and a T crank 29 one arm 28 of which receives oscillatory motion from a crank 26 on shaft 7 through a connecting rod 11. A digging mechanism located within the box transfers the cut manure to a conveyer 44 also located within the box, and comprises a number of swing- ing links 37 pivoted to an oscillating arm 39 and also to a stationary pin 33. The lower end of each blade 37 is provided with a digging blade 41 which may be pronged. The cut manure is transferred across the box from f to c by the digger and from a to k by another digger onto the conveyer 44.
Patent GB-935973-A (GB)
Title: An adjustable electronic masking circuit
IPC: G03B33/00
Filed: 1959-11-23
Abstract: 935,973. Colour television. HAZELTINE CORPORATION. Nov. 23, 1959 [Dec. 2, 1958], No. 26344/61. Divided out of 935,972. Drawings to Specification. Class 40 (3). The description is substantially identical with that appearing in Specification 935,972, but the claims relate to the adjustable masking circuit described with reference to Fig. 5. Specification 841,125 also is referred to.
Patent GB-293240-A (GB)
Title: Improvements in and relating to cord grips for electric or other fittings
IPC: H01R33/46
Filed: 1927-10-06
Abstract: 293,240. Kimber, A. W., and Westlake, K. G. Oct. 6, 1927. Holders.-A cord or like gripping device shown as applied to an electric lamp holder comprises two half-cone members c slidably mounted within a coned fitting A on spring arms s which urge the members c towards each other to grip the flexible leads F. When the weight of the holders &c. is taken by the leads, the members c are moved upwards into contact with the inner coned surface of member A, so increasing their grip on the leads. To release the leads, members c are depressed to the position shown, and the spring arms are forced apart by suitable means. For example, the usual bayonet-joint member of the holder (not shown) may be removed, and reversed, and then pressed into fitting A against the inner surfaces of the spring arms.
Patent GB-280024-A (GB)
Title: Improvements in or relating to the valve gear of internal combustion and other engines
IPC: F01L1/18
Filed: 1926-10-22
Abstract: 280,024. Whitehead Torpedo Co., Ltd., and Jones, A. E. Oct. 22, 1926. Valve gear. - A valve lever is made up of two parts A, C, the former having a lateral spigot A' which carries the cam bowl B and has a reduced end A<1x> fitting into a hole C<X> in the other part C. A bridge-piece C<1> on the part C engages the valve stem, and is formed with a lug C<1x> which engages over the upper part of the member A. Holes A<3>, C<3> are provided for the lever pivot. The lever is particularly adapted for engines such as are described in Specification 284,024, [Class 122 (i), Engine and like cylinders &c.].