baber/WOPTO huggingface dataset:
Patent GB-1316698-A (GB)
Title: High speed ac generators
IPC: H02K5/167
Filed: 1971-04-19
Abstract: 1316698 A.C. generators; cooling dynamo-electric machines K N LEHOCZKY 19 April 1971 [11 Feb 1970] 21394/71 Heading H2A  A high speed homopolar A.C. generator, particularly for direct coupling to a gas turbine, comprises a rotor with axially spaced poles supported by air bearings within a stator carrying magnetizing and output windings, the stator core having channels in which a liquid cooling medium is circulated and evaporated, the vapour then being passed to a condenser and returned to the channels. As shown in Fig. 1, the rotor 3 has a pair of poles 1 positioned opposite axially spaced stator cores 5 carrying a single or polyphase winding 7 and between which magnetizing coils 8 are located. End and central bearings 2 are provided for the rotor which is separated from the stator by a lining 4. The cooling channels are shown at 6, further channels being provided if required in the winding slots, and the condenser 19 for the cooling liquid is carried by a bearing end shield 13, cooling air for the condenser being supplied by an air intake 16 on the rotor. Fig. 4 shows another embodiment consisting of two units each similar to that shown in Fig. 1 connected end-to-end. The rotor therefore has four poles 1<SP>1</SP>, two like poles being connected together at the centre. The poles are located opposite three stator cores 5<SP>1</SP> with two sets of interposed magnetizing coils 8<SP>1</SP>. Condenser 19<SP>1</SP> in this embodiment is mounted separately from the machine and connected to the stator by pipes 20<SP>1</SP>, 21<SP>1</SP>, the flow pipes 21<SP>1</SP> introducing the cooling liquid adjacent one set of magnetizing coils and at one end of the stator and the return pipes 20<SP>1</SP> extracting the vapour adjacent the other set of magnetizing coils and at the other end of the stator. The spaces between the rotor poles may be filled with non-magnetic material so that the outline of the rotor is a continuous cylinder.
Patent GB-224626-A (GB)
Title: Improvements in or relating to long burning oil lamps
IPC: F23D3/00
Filed: 1923-08-23
Abstract: 224,626. Stake, J. Ayton-. Aug. 23, 1923. Wick burners, annular and flat-flame; burners, attaching and mounting.-A burner of the type in which the burning surface consists of portions of the cross-sectional area of the wick successively exposed by a flame controller is provided with a hand-operated spring stop lever and a rack or ratchet rail whereby predetermined uniform displacements of the wick or flame controller are periodically effected. A pointer indicates on a scale the number of expired burning periods. For an annular wick a rotatable flame controller 6, Fig. 1, mounted on a spindle 5 and having flame orifices 7 may be provided, a resilient or spring- influenced hand lever 8 protruding through a slot 9 in the gallery 10. Below the slot a notched, serrated or corrugated rail 11, Fig. 3, co-operates with a nose 12 at the underside of the handle and a pointer 13 indicates on a scale 14 on the gallery the number of expired periods. In a modification, the wick-holder 2 may be rotatably mounted, the flame controller being stationary. Fig. 4 shows a flat wick in a holder 15 pivotally supported by trunnions 16 in bearings 17 at the top of the oil reservoir. A hand lever 19 under spring influence co-operates with a notched rail 20 or the like and maintains the wick-holder in its adjusted position. The flame controller 22 having a single-flame orifice 23 is hinged to its supporting pillar 24 to permit of access to the wick. Alternatively, the wick-holder may be stationary and the flame controller adapted to swing in an arc over the wick. Specifications 12219/15, 206,922, 211,068 are referred to.
Patent GB-279976-A (GB)
Title: Terminal contacts of tumbler and other switches
IPC: H01H1/58
Filed: 1926-08-31
Abstract: 279,976. Charles, W. J. Aug. 31, 1926. Contacts. - A combined contact and terminal for a tumbler switch &c., made from one piece of metal; comprises a metal blank, one end of which is capshaped and seats itself upon the insulating base and is pierced at g<2> to receive a wire lead which is then clamped by a screw entering the blank through a hole h<2>. The other end of the blank is shaped to. form a contact f and the middle portion a is fixed to the base by a screw k.
Patent GB-313353-A (GB)
Title: Improvements in garment presses
IPC: D06F71/06
Filed: 1928-07-24
Abstract: 313,353. Gray, F. T., and Whitaker, Ltd., R. G. July 24, 1928. Ironing-presses.-In a garment-press having power means for closing the press and for applying the final heavy pressure, the closing means are arranged to be ineffective unless they are aided manually and the pressure-applying means are inoperative until after the press has been closed, and means are provided for maintaining them inoperative if desired. The press head lever b, Fig. 1, is linked to a bell-crank lever f one arm of which is linked to a bell-crank lever f pivoted to the piston rod m of a piston n which works in a cylinder o. The rocker bar is also linked to a cam l which is pivoted to the frame and which acts on a roller e after the press has been closed to raise the link c and apply the heavy pressure. The cylinder o is connected by a pipe q to a radial port r<2>, Fig. 5, in a valve block r The port leads into an axial aperture r', Figs. 4 and 5. which passes right through the block r. Two other radial ports r<3>, r<4> communicate with oppositely directed apertures in the block r and with a source of vacuum and the atmosphere respectively. Diaphragms r<6> are clamped over the faces of the block r and are separated by a distance piece r
 of a length greater than the thickness of the block r. A spring r<7>, Fig. 4, normally maintains communication between the cylinder o and the source of vacuum by way of q, r<2>, r<1>, and r<3>. The friction and inertia of the linkage system and press head are, however, sufficient to prevent the piston n from closing the press unless manually aided. A treadle u may be depressed to prevent application of heavy pressure, the free end of the treadle obstructing the movement of the rocker bar j. The press is opened by depression of a treadle t which through a rod t<1>, Fig. 4, raises the distance piece r<8> against the spring r' and puts tEe cylinder o into communication with atmosphere through q, r<2>, r<1>, r<4> thereby permitting the spring p in the cylinder o to open the press, the cylinder and piston serving as a dashpat during the opening movement.
Patent GB-462166-A (GB)
Title: Improvements in pens and method of making the same
IPC: B43K1/02
Filed: 1935-07-29
Abstract: 462,166. Making pen-nibs. ESTERBROOK STEEL PEN MANUFACTURING CO. July 29, 1935, No. 21473. Convention date, July 27, 1934. [Class 83 (ii)] [Also in Group XV] Pen-nibs are formed by the usual operations of piercing, slitting, shaping, and rumbling from a blank having the writing-tip end closely folded over. The blank 1 is stamped from a sheet of metal A, preferably stainless steel, having one edge a folded back into close contact with the underside of the main body. The metal at the fold is stressed beyond the elastic limit, and the blanks may be cut so tha,t the folded edge is at right angles or inclined to the main axis of the nib.
Patent GB-231081-A (GB)
Title: Improvements in buttonhole sewing machines
IPC: D05B3/08
Filed: 1924-09-11
Abstract: 231,081. Fairweather, W., (Singer Manufacturing Co.). Sept. 11, 1924. Button-hole sewing-machines. - In a buttonhole sewing-machine having means for rotating the stitching mechanism to sew round the eye of a button-hole, means are provided for reversely rotating the stitching mechanism during the stitching of part a, b of the shank of the buttonhole immediately adjacent to the eye, subsequently forwardly rotating the stitching mechanism during the stitching of the eye from d, e through 180‹ plus twice the angle of reverse rotation. and again reversely rotating the mechanism during the stitching of the part f, g. The object of this rotation is to place the initial stitches of the eye more nearly normally to the curve of the eye and also to crowd the depth stitches at the parts a, band f, g for strengthening purposes. The mechanism is described in application to a machine of known type having a jogging needle and comprises a cam-track 21 actuating a lever 18 which is connected by links and toothed gearing to rotate the stitching mechanism. The part 23, 24 of the cam is concentric, corresponding to the part s, a of the button-hole; the part 24, 25 inclines outward corresponding to the part a, b; 25, 26 corresponds to the rotation d, e; 26, 27 corresponds to the part f, g; 27, 28 corresponds to the straight stitching g, t, and 28, 23 effects the rotation of the mechanism at the close of an operation to set the machine in readiness for a fresh button-hole.
Patent GB-676109-A (GB)
Title: Improvements in and relating to the manufacture of phenols
Inventor: MILNER DAVID WILLIAM
IPC: C07C37/04
Filed: 1949-08-18
Abstract: Phenols are prepared from the appropriate alkali metal sulphonate by treatment with steam in presence of an alkali metal phenate corresponding to the phenol and either an alkali metal aluminate or aluminium hydroxide or oxide.  The phenols produced may be for example cresols, naphthols, and hydroxypyridines.  The phenol, if volatile in steam, is removed by distillation, but if not volatile, an appropriate increase in the amount of alkali originally added is made, and the phenol remains in the residue from the reaction zone from which it is recovered by acidification.  The alkali metal phenate used in the process of the invention is conveniently made by reacting calcium phenate with a sodium sulphite solution.  The reaction is preferably continuous by introducing fresh reactants and removing the reaction residue continuously from the reaction zone. In examples: (1) a mixture of sodium phenate, sodium benzene sulphonate and sodium aluminate is heated in steam to distil off the phenol.  The residue was treated with water and filtered, mixed with calcium hydroxide then with phenol to prepare sodium phenate which was then employed to generate more phenol from the previously recovered solution of sodium aluminate and additional sodium benzene sulphonate; (2) dry hydrated aluminium oxide was added to an aqueous solution of sodium phenate and sodium benzene sulphonate, the mixture evaporated to a paste and treated with steam to distil off the phenol.  Specification 654,786 is referred to.
Patent GB-186489-A (GB)
Title: Improvements in frames for pictures, photographs or the like
IPC: A47G1/14
Filed: 1921-08-13
Abstract: 186,489. Harper, H. A. C., and Harper, R. Aug. 13, 1921. Picture and like frames.-Relates to means for retaining the glass, picture, and backing in position in frames of the kind having a removable backing. Two opposite sides 1, 2, Fig. 2, of the frame, which may be built up of channelsection members 1, 2, 3, 4 are provided with upwardly-extending flanges 5, adjacent to at least one of which are secured one or more springs 6. The glass 8, mount and picture 9, and backing 10, Fig. 4, are inserted behind the lower flange 5 and are pressed against the spring until their opposite edges can be inserted under the upper ledge 5. The backing, glass, &c. are then released, and are slightly raised by the spring, so that they are retained by the flanges 5.
Patent GB-447356-A (GB)
Title: Improvements in or relating to bits for horses and like animals
IPC: B68B1/06
Filed: 1935-07-29
Abstract: 447,356. Bridles. WOOD, H. R. W., Lanhill, Chippenham, Wiltshire. July 29, 1935, No. 21545. [Class 62] In a bit particularly suitable for training horses the mouthpiece 1 is slidably mounted in the cheek-rings 3 between a pair of bars 4 which are normally horizontal, and the cheek-rings are integrally connected by a curved bar 6 passing beneath the lower jaw and are provided with inward projections 7, Fig. 4 or with peripheral slots 7<1>, Fig. 5 to enable the points of attachment of the headstall 8 and nose-band 9 to be varied. The cheek-rings receive also a throat-strap carrying a ring 12 through which the side-reins 13 pass and to which may be attached a bearing rein 15 and a martingale 14. Rings 2 at the ends of the mouthpiece receive the ordinary riding reins. The upper part of the cheek-rings 3 may be flared outwardly as in Fig. 3, and eyelets 11 may be provided for the reception of a cheek-lace to prevent bucking.
Patent GB-658289-A (GB)
Title: Apparatus for applying a liquid to a web
IPC: B41F15/08
Filed: 1948-08-16
Abstract: 658,289. Coating webs. FAES, E. Aug. 16, 1948, No. 21564. [Class 140] [Also in Group XVI] An apparatus for applying a liquid to a web 1, comprises an endless flexible sieve 6 passing between the web and a liquid-applicator roll 4, the sieve being tensioned by means of a heavy roller 9 resting freely thereon. The web is guided over a drum 3 which may be prewetted by a roll 12, and guide rollers 7 and 8 maintain contact between the sieve and the web over a portion of the circumference of the drum 3. Doctor blades may act upon the roll 4 and drum 3. The sieve may be wire or textile gauze or a fabric of sufficiently large mesh to allow the application of liquid over its whole surface or may be coated with an impervious layer over its whole surface except for pre. determined areas in order to print a design. The sieve may be provided with edge guides and reference marks may be provided on the guides and sieve to define the position at which a design will be printed on the web. One or more printing sets may be arranged about the drum 3 as shown, the outer sets incorporating additional guide rollers 14. The web may be printed on the reverse side in a second device.
Patent GB-1022881-A (GB)
Title: Improvements in vibrating diaphragm sound wave-projectors
IPC: G10K13/00
Filed: 1961-06-14
Abstract: 1,022,881. Audio transducers. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. June 14, 1961. [July 4, 1960], No. 21565/61 Heading H4J. A transducer for radiating acoustic waves comprises a circular diaphragm and means located substantially at the centre of the diaphragm for inducing therein travelling bending vibrations, the diaphragm having a radius large with respect to the wavelength of the vibrations. In Fig. 1, bending vibrations are induced in a circular diaphragm 1 by a vibrator 3. The diaphragm 1 is maintained by a ring 2 in the hull 4 of a ship. The ring serves as a support but does not disturb the vibration of the diaphragm. Progressive waves are excited in the diaphragm by the vibrator 3 and reflected waves are cancelled either by attenuation through radiation or by a suitable matching device (not shown) on the periphery of the diaphragm 1. It is shown that under these conditions maximum radiation is at an angle # whose sine is equal to the ratio of the wave numbers of the vibrations in the diaphragm and in the water. As a consequence of this there is a lower cut-off frequency below which the device will not operate. The cut-off frequency may be lowered by providing rings 50, Fig. 9, of a sound reflecting material on the radiating face of the diaphragm. An an alternative the diaphragm may be provided with rings of reduced thickness cut out of its non- radiating surface, Fig. 10 (not shown). These systems may be made dispersive (radiation direction highly variable with the operating frequency) or non-dispersive according to the choice of frequency and the spacing between the rings. The vibrator may be electromagnetic, Fig. 4 (not shown), or magnetostrictive, Figs. 5 and 6 (not shown).
Patent GB-1352178-A (GB)
Title: Power steering systems
IPC: B62D3/10
Filed: 1971-04-19
Abstract: 1352178 Power steering apparatus A E BISHOP 19 April 1971 [29 Jan 1970] 21633/71 Heading B7H A power steering apparatus comprises a steering input shaft 11 drivingly connected to a cross-shaft 13 which actuates a known steering linkage requiring an increase in torque as the cross-shaft rotates from a central position, a power motor 40, and a variable ratio gear connection 42, 43 having a pitch line of varying radius providing an increased drive ratio as the shaft 13 moves from the central position. The shaft 11, carrying a steering wheel (12), Fig. 4 (not shown), rotates a worm 25, Fig. 2, through a torsion bar 26 and loose spline 24. The worm 25 drives a sleeve valve 23 which supplies the power motor 40. A cam follower 29 engages the worm 25 to provide a high steering ratio in the straight ahead position and a decreased ratio in the displaced position. A rack 42 engaging a gear 43 integral with the cross-shaft 13 is actuated by piston 41 of motor 40. Gear teeth 43a, 42a are provided with a varying ratio to produce a required increase in torque of the shaft 13 when rotated from its central position.
Patent GB-535968-A (GB)
Title: Improvements in or relating to frames for cycles and motorcycles
IPC: B62K19/02
Filed: 1939-07-26
Abstract: 535,968. Cycle frames. COVENTRY-EAGLE CYCLE & MOTOR CO., Ltd., and WOODMAN, A. C. July 26, 1939, No. 21667. [Class 136 (iii)] In cycle and motor-cycle frames wherein the top rail or backbone extends in a continuous straight line from the top of the steering-head in the direction of the rear-fork ends and is made from a single sheet-metal pressing fashioned to an inverted channel section comprising a web 2 and side flanges 3, a separate seat-carrying member 7 is secured to and supported from the top rail or backbone, to give the effect of a " dropped " frame affording sufficient clearance for the machine to be used by female riders. The flanges 3 have rearward extensions forming a fork 4 for the rear wheel, and forward extensions which are bent to form or to enclose the steering-head 5. The side flanges 3 are also extended downwards, either integrally or by detachable side shields, to form a housing for the driving mechanism, apertures 6 being provided to accommodate the pedal axle or the engine fly-wheel and other projecting members. The seat-carrying tube is fixed at its lower end in a cross-member 8 and is supported by a sheet-steel member 9 bent from a blank into channel section and adapted to embrace the tube 7 and to be welded &c. to the main frame. A petrol tank may be mounted between the side flanges 3, or the upper part of the frame may be formed into a petrol tank by means of metal plates 10 secured between the flanges 3 to form the base and front wall. The lower portions of the flanges 3 may be stepped outwardly at 12 to provide a greater space for the engine &c. The frame may be stiffened by edge flanges 13, or by ribs or flutings, and stiffening plates 14 may be welded &c. to it, e.g. at the fork ends. According to the Provisional Specification, the seat may be mounted directly on the web of the pressing or a separate seat-supporting member of pressed-steel construction may be provided.
Patent GB-1480486-A (GB)
Title: Ammonium phosphate
IPC: C05B7/00
Filed: 1975-05-09
Abstract: 1480486 Ammonium phosphate SCOTTISH AGRICULTURAL INDUSTRIES Ltd 9 May 1975 [16 May 1974] 21747/74 Heading C1A A particulate solid comprising ammonium phosphate of N : P atomic ratio 0À95 to 1À6 is made by a process which comprises partially ammoniating wet-process phosphoric acid to a N : P atomic ratio not greater than 0À3, the acid having a Mg content greater than 0À2%, preferably in a scrubber unit, treating the partially-ammoniated wet-process phosphoric acid with ammonia to produce a fluid slurry of ammonium phosphate, adding a soluble source of fluorine to increase the fluorine level of the slurry, the amount added providing 0À1-5% of fluorine and removing excess water to give a water level of 3À5-15% by weight. The preferred fluorine-containing compound is NH 4 HF 2 . Silicofluorides may be precipitated out prior to the first ammoniating step by adding cations, and the silicofluorides returned to the fluid slurry prior to the water-removal step. The slurry temperature is preferably 120- 126‹ C. In a preferred embodiment the partially ammoniated acid (N : P=0À3) and gaseous NH3 are added to a slurry of ammonium phosphate (N : P 1À2-1À8) with a moisture content in the range 10-20% by weight, in such proportions as to form more slurry of the same composition, adding the fluorine source, simultaneously removing an amount of slurry equivalent to that being formed and mixing the removed slurry with phosphoric acid to produce the desired N : P atomic ratio and evaporating off excess moisture. Reference has been directed by the Comptroller to Specification 951,476.
Patent GB-1310930-A (GB)
Title: Logic system
IPC: H03K19/096
Filed: 1970-05-06
Abstract: 1310930 FET logic circuits TELETYPE CORP 6 May 1970 [7 May 1969] 21772/70 Heading H3T A capacitor 39 receives a data signal from 33 through, for example, a F.E.T. 34 in clock # 1  time, another capactior 47 being also charged in # 1  time to the # 1  voltage, through for example a F.E.T. 43, the data stored on C39 subsequently causing C47 to be discharged or not according to the stored data level, through for example a F.E.T. 44. The data thus appears in true and complement form at C39, C47 respectively after # 1  time. The F.E.T.'s could be replaced by diode arrangements.
Patent GB-369504-A (GB)
Title: Improved means for maintaining secrecy in telegraph and telephone transmission and reception
IPC: H04K1/00
Filed: 1931-07-30
Abstract: 369,504. Electric phonographic dictation installations. CHAMIER, F., Cecil Chambers, Strand, London. July 30, 1931, No. 21802. [Class 40 (ii).] An installation for use in a telephone system in which secrecy is obtained by transmitting messages in reversed sense by means of a telegraphone, includes circuit arrangements whereby matter recorded over a microphone at a station can be reproduced locally. In the system shown, switches c1 .. c8 are closed in various combinations, as shown in Fig. 2, by a controller having six positions. In position 2, messages spoken into microphone d are recorded on the telegraphone l with the tape i running in the direction j1, and in position 3 this matter is reproduced in the same sense in the local loud speaker g through the amplifier a. Position 5 serves to transfer the tape from drum h1 to h2, whilst in position 6 any recorded messages are wiped out by steady current from the plate battery m.
Patent GB-1122593-A (GB)
Title: Preparation of linalool oxide
Inventor: NAIR GOVINDAN VELAYUDHAN
IPC: C07D307/12
Filed: 1965-05-24
Abstract: Linalool oxide (a mixture of cis and trans 2-methyl-2-vinyl-5-(a -hydroxyisopropyl)tetrahydrofuran) is prepared by reacting an acylate of 2,6 - dimethyl - 2,3 - epoxy - oct - 6 - en - 8 - ol (2,3 - epoxy -nerol and geraniol) in an inert solvent with sufficient strong acid to provide a concentration in the reaction solution of at least 0.5% w/v. Suitable acylates are the acetate, formate, propionate, butyrate, benzoate and phenyl acetate.  Specified strong acids are H2SO4, HCl, H3PO4 and p-toluene sulphonic acid.  Acetone, methanol, ethanol, chloroform, benzene and toluene are suitable inert solvents. The reaction may be effected at temperatures in the range 0 DEG  C. to reflux temperature of the solvent.  The cis and trans isomers of linalool oxide may be separated by chromatographic techniques.  The 2,3-epoxy-neryl and geranyl acylates may be prepared by the epoxidation of the corresponding neryl and geranyl acylates.