baber/WOPTO huggingface dataset:
Patent GB-109708-A (GB)
Title: An Apparatus for the Transmission of Sound Through the Auricular Cavities of Throat and Head.
Inventor: DREW VERNON
IPC: H04R25/00
Filed: 1916-12-04
Abstract: 109,708. Drew, V. Dec. 4, 1916. Variable - resistance transmitters; receivers; e a r - pieces.-Apparatus for assisting hearing comprises a battery from which a current passes through a generator or sound-collecting de. vice, Fig. 1, to the ear-piece of a " sounding- box," Fig. 3, and thence through the head to a " receiver," Fig. 4, placed at the back of the opposite ear and connected to the other pole of the battery. The generator comprises a box V perforated at U and into which passes a screw A connected to the battery by a non-insulated wire coiled on a soft iron wire and passing successively through a carbon block B, graphite granules C, metal disk D. a parchment cover, carbon block E, perforated metal disk F, and carbon block G. The end of the screw is fitted with a spring-mounted platinum contact L adjacent to a hollow carbon block J carried by a steel rod M soldered to the screw. A wire I connected to the screw A is wound round the carbon G and the rod M, passes through carbon blocks 0, and is connected to a screw W on the sounding-box. The generator is fitted internally with metal tubes &c. H, N, P arranged as shown. The sounding-box is provided with a metal lining H in two separate parts and fitted with a screw W, carbon blocks X, Y, Z, e, metal ring c containing graphite granules, and metal disks, tubes, &c. arranged as shown. A wire j terminates in a loop within the ear-piece f. The sound terminal, Fig. 4, mounted behind the other ear is supported by a wire r and comprises a crescent-shaped metal bar y with a flange w. The Provisional Specification states also that artificial ear-drums may be connected,to the wire within the ear-piece f of the sounding-box and to the sound terminal respectively.
Patent GB-546468-A (GB)
Title: Improvements in electric ratiometers
IPC: G01R27/12
Filed: 1940-12-09
Abstract: 546,468. Resistances and current measurements. SMITH & SONS (MOTOR ACCESSORIES), Ltd., S., and KLEPP, E. C. Dec. 9, 1940. [Class 37] In a moving coil ratiometer, the coils 12, 13 are arranged to move through a magnetic field the intensity of which varies along their path, whereby for a given ratio of currents flowing through them they will move to that location where the electromotive forces resulting respectively from the different current densities and different field strengths balance one another. As shown, Fig. 2, the core 15 is disposed in an elliptical space 17 between the pole pieces 18, 19. In a modification, Fig. 3, the space between the pole pieces is cylindrical and the core elliptical in cross-section and in a further modification, Fig. 4, the coils are disposed with their planes parallel but on opposite sides of the core which is cylindrical in shape and spaced to one side of the axis of the cylindrical space.
Patent GB-560968-A (GB)
Title: Improvements in or relating to hair curling combs
IPC: A45D2/42
Filed: 1942-12-09
Abstract: 560,968. Curling appliances; combs. COAKLEY, F. J., and COAKLEY, A. A. Dec. 9, 1942, No. 17496. [Class 131] A haircurling appliance in the form of a comb has the teeth C of the comb inclined away from the handle B to facilitate removal of the curling appliance from the hair curl. The teeth may be inclined forwardly and curved as shown in Fig. 6, and they may be shorter at the forward end than at the rear to give a tapered form as indicated in Fig. 1. An aperture D or groove E is provided for the reception of a hair grip in known manner.
Patent GB-838047-A (GB)
Title: Improvements relating to ammunition magazines of firearms
IPC: F41A9/07
Filed: 1958-06-02
Abstract: 838,047. Loading mechanism for firearms. BOFORS A. B. June 2, 1958 [June 14, 1957], No. 17526/58. Class 92 An automatic firearm has a magazine with compartments from which rounds are fed by pawls 5 on vertically reciprocating frames 6 connected with a driving mechanism so that only frames which are above unoccupied sections of a feed-table execute the vertical feeding movement. Halves 1 and 2 of the magazine are arranged on either side of a gun barrel 3 (Fig. 1, not shown), and elevate with it. The frames 6 run on rollers on guide ribs 8 that. are fitted with stationary pawls to prevent the rounds from moving upwards in the magazine compartments. The frames are moved up and down by cranks mounted on two transverse half-shafts oscillated through bevel gearing 28-29-30 by crank mechanism 25-26 operated from a bar 9. Dampers of known kind are interposed between the first mentioned cranks and the half-shafts to control speed of operation. The feed table comprises round-carrying members 10 and 11 fitted with spring- actuated pawls 12 and mounted on the bar 9. The bar carries a member 24 which bears on levers 18 and 19 which are connected to springs 16 and 17 that provide the force to move the bar 9 from side to side to oscillate the feed table so as to feed the rounds to a central rammer 14. A tongue 4 recoiling with the gun engages a roller on each of the levers 18 and 19 alternately to cock the corresponding spring at the same time releasing (by trip-means not shown) whichever of a pair of spring latches 22 and 23 is holding the other spring in its cocked position.
Patent GB-1384584-A (GB)
Title: Battery charger
IPC: H02J7/00
Filed: 1972-04-17
Abstract: 1384584 Battery charging systems GATES RUBBER CO 17 April 1972 [19 April 1971] 17594/72 Heading H2H A battery charging system comprises a power source and a controlled rectifier S.C.R. series connectible to a battery B to be charged, a potential divider R1, 30 being connected across the power source and the rectifier being allowed to heat up during initial charging of the battery to lower the potential across the gate-cathode junction at which the rectifier conducts and thereby increasing the initial charging rate. The power source includes a transformer T connected to a mains A.C. supply and the device 30 may be a thermistor, strain gauge, pressure transducer, resistor or photodiode but is preferably a Zener diode (ZD 2 ), Fig. 2 (not shown), connected in parallel with a potentiometer (R2) the tapping point of which is connected via a diode D1 to the gate electrode 28 of the rectifier. During initial charging the rectifier heats up since it is not provided with a heat sink, and due to the fact that the gate-cathode potential at which the rectifier conducts is inversely proportional to the temperature, the rectifier is fired early in each half cycle to supply a high charging current to the battery. As the battery approaches the end of charge the current through the rectifier decreases and the resultant cooling of the rectifier S.C.R. delays its firing point until the rectifier is eventually switched off. Thus overcharging of the battery is prevented. The power source may include a full wave rectifier.
Patent GB-1339843-A (GB)
Title: Vehicle wheels and to methods of making such wheels
IPC: B60B5/02
Filed: 1971-05-27
Abstract: 1339843 Vehicle wheels FICHTEL & SACHS AG 27 May 1971 [2 June 1970] 17655/71 Heading B7C [Also in Division B5] A vehicle wheel comprises a hub sleeve 1, a radial flange 5 at each end of the hub sleeve, a rim 3, and either a synthetic plastics radial disc or a plurality of synthetic plastics disc sectors 14 connecting each flange to the rim, means being provided between the hub sleeve and the discs or disc sectors to restrict heat flow between the sleeve and the discs or disc sectors, such that in use of the wheel overheating of the plastics parts is avoided. The means to restrict heat flow may be located in the radial flanges, or between each radial flange and the discs or disc sectors, or between the hub sleeve and each radial flange. Circumferentially extending slots 6 may be provided in the radial flanges 5 as the means to restrict heat flow and each radial flange may be mounted on a narrow, e.g. 0À7 mm. wide, centring collar 26 on the hub sleeve to limit the area of contact between the sleeve and the flange thereby further restricting heat flow, the flange being held on the collar by radial claws 31 engaging recesses in the flange. The rim 3 and the plastics discs or disc sectors are preferably made in one piece. When plastics disc sectors 14 are used they may be joined to the radial flanges at slots 10 in lugs 9 formed on the outer periphery of the flanges, and when plastics discs are used they may be joined to the radial flanges at engagement apertures formed in the radially outer part of the flange. A method of making the vehicle wheel is described for the case where the wheel has disc sectors, in which method plastics is injected into an injection moulding tool to form the rim and the disc sectors and at the same time join the disc sectors to the radial flanges (see Division B5).
Patent GB-292779-A (GB)
Title: Improved fly trap
IPC: A01M1/22
Filed: 1927-07-04
Abstract: 292,779. Schwaiger, A., and Br÷sdorf, K. July 4, 1927. Electric killing-appliances, - An electric flytrap comprises a glass bell 1 having at its upper end a plug 2 supporting by means of a screwed ring 3 and curved radial arms 4 a flat grid cf parallel wires 6, 7. The wires are connected alternately to concentric rings 5, 5<1> themselves connected to leads 8, 9, passing through the plug 2 and controlled by a switch 13. A small electric lamp 12 is supported on rigid conducting supports 10, 11 on the grid 6, 7. The bell 1 is supported on a plate 16 having a receptacle 20 for bait such as castor sugar, and having clips 17 connecting the plate with feet 14 on the bell. Flies entering through the spaces 19 between the feet 14 are electrocuted on striking the grid 6, 7 and fall on the plate 16. The appliance may be placed on a rigid support or suspended and may also serve as a night lamp.
Patent GB-130518-A (GB)
Title: Improvements relating to Electrically Heated Fabrics.
Inventor: LUCAS ARTHUR STANLEY
IPC: H05B3/34
Filed: 1918-10-30
Abstract: 130,518. Lucas, A. S. Oct. 30, 1918. Special threads and wires used in sewing.- In electrically - heated gloves or like articles, the heating wires on one side of the fabric lining the glove are used as an integral part of the sewing by which they are secured. A sewing-machine, of the type in which one thread is passed through the fabric from the upper side by a needle and looped around another thread which lies entirely on the lower side, is employed. The heating wire b, Fig. 2, which may be insulated, is employed as the lower thread, and the other cotton or like thread c is the one which passes through the fabric a. To prevent the conductors from being damaged by an accidental jerk, the ends may be brought together and passed through a short length of flexible tube e, coiled as shown, and sewn to the fabric. The Provisional Specification states that the invention may be used for other body coverings for airmen and drivers of motor vehicles, bed warmers, surgical appliances, and the like.
Patent GB-684745-A (GB)
Title: Improvements in magnetic pole pieces for dynamo electric machines
IPC: H02K49/04
Filed: 1951-07-27
Abstract: 684,745. Eddy-current apparatus. WINTHER, M. P. July 27, 1951 [Oct. 30, 1950], No. 17798/51. Addition to 658,311. Class 35. A clutch, eddy-current brake or dynamometer with an imbricated pole-member as claimed in the parent Specification has the cross - section of the polepieces increased adjacent the air gap to lower the flux density locally in this region. The coupling shown has a magnetic eddy current ring 21 carried by a spider 19 on one shaft 13 encircling the imbricated poles 23, 25 carried by spider 15 on shaft 11.
Patent GB-574001-A (GB)
Title: Improvements in or relating to foot protecting slippers
IPC: A43B23/28
Filed: 1943-10-28
Abstract: 574,001. Oversocks for footwear. FOREST CITY. PRODUCTS, INC. Oct. 28, 1943, No. 17802. Convention date, Jan. 30. [Class 17 (ii)] A foot protecting slipper for wear inside a shoe comprises a form-retaining heel cup having a seat 13 and counter 14 of flexible, resilient material and a body portion of stretchable fabric comprising toe and relatively narrow shank portions 11, 12 respectively attached to the forward edges of the heel cup. The body portion may comprise two pieces of woven textile with flock surface stiffened with a filler such as rubber, latex, pyroxylin and united by a longitudinal seam 18. The hem 21 of the body portion may have an elastic band therein.
Patent GB-613168-A (GB)
Title: Manufacture of pyridinium compounds
Filed: 1946-06-13
Abstract: Salts of N : N-disubstituted carbamic acid esters of N-alkyl-3-hydroxypyridinium, of the general formula <FORM:0613168/IV(b)/1> where R1 and R2 are alkyl, aryl or aralkyl radicals, R3 is an alkyl radical, and M is a halogen or an alkyl sulphate radical, are prepared by converting 3-hydroxypyridine into a N : N-disubstituted carbamic acid ester by known methods for converting an hydroxy compound into its carbamic acid ester and converting this into the quaternary compound by the action of an alkyl halide or a dialkyl sulphate.  The N : N-disubstituted carbamic acid esters of 3-hydroxy-pyridine may be obtained by the reaction of disubstituted carbamic acid chlorides with 3-hydroxypyridine or by allowing phosgene to act on 3-hydroxypyridine to give a chloro-formic acid ester of 3-hydroxypyridine which is then reacted with a disubstituted amine.  In examples: (1) 3-hydroxypyridine is treated with dimethylcarbamic acid chloride in xylol to give the N : N-dimethyl - carbamic acid ester of 3-hydroxypyridine which is then treated with methyl bromide in acetone to give the corresponding 1-methyl-pyridinium bromide; (2) 3-hydroxypyridine is treated with phosgene in chloroform and the product is caused to react with dimethylamine to give the dimethylcarbamic acid ester of 3-hydroxypyridine which is converted to the 3-hydroxy-1-methyl-pyridinium bromide as in (1) and (3) 3-hydroxypyridine is treated with diphenyl-carbamic acid chloride and the resultant N : N-diphenylcarbamic acid ester of 3-hydroxypyridine is treated with dimethyl sulphate or with methyl bromide to give the corresponding 1-methylpyridinium methyl sulphate or 1-methylpyridinium bromide respectively; similarly by using benzyl-phenyl-carbamic acid chloride in place of the diphenyl compound the N : N-benzyl-phenyl-carbamic acid ester of 3-hydroxy-1-methyl-pyridinium bromide is obtained.
Patent GB-203445-A (GB)
Title: Improvements in or relating to sawing and other combined apparatus
IPC: B27C9/04
Filed: 1923-03-10
Abstract: 203,445. Howard, R. March 10, 1923. Drilling-machines. - A joiner's or like bench fitted with a band saw b and a sanding-disc p also carries a boring-spindle q driven from a shaft h rotated by either of two treadles j, w.
Patent GB-451535-A (GB)
Title: Improvements in or relating to electron discharge device amplifiers
IPC: H03F3/36
Filed: 1935-06-21
Abstract: 451,535. Control systems for discharge lamps. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and KEALL, O. E., 32, Rainsford Avenue, Chelmsford. June 21, 1935, No. 17930. [Class 38 (iv)] [See also Group XL] Variable - grid bias voltage for a D.C. amplifier is derived from a source of potential A, by means of a Wheatstone bridge circuit B, C, which is set slightly out of balance, the bias voltage GB being taken by a slider D<1> on a resistance D in a diagonal of the bridge and through which flows the out-of-balance current. In the arrangement shown in Fig. 1, the two sliders B1, C1, on the resistances B, C are gangcontrolled from the knob HBC in such manner that for all positions of the knob the bridge is slightly unbalanced ; alternatively the necessary unbalance may be obtained by an additional resistance between adjacent ends of resistances BC. A predetermined small amount of backlash may be introduced into the mechanical connection of sliders B1, C1. The arrangement is particularly applicable to direct current amplifiers in electro-cardiographs.
Patent GB-216382-A (GB)
Title: Improvements in or relating to devices for exhibiting the action of various models of reversible machinery and the like
IPC: G09B25/02
Filed: 1923-07-11
Abstract: 216,382. Fowler & Co. (Leeds), Ltd., J., and Moor, P. T. July 11, 1923. Power cultivation of land.-A device for exhibiting models of machinery such as agricultural machinery comprises a track, a traction rope, and an electric or other motor by means of which the model is moved to and fro long the track In the construction shown in Figs. 1 and 3, a plank A carries brackets B supporting a guide bar C on which is slidably mounted the model N, shown as a model of a tipping plough. The model is secured to an endless traction rope M which passes round a stationary pulley I, a tensioning pulley K, two guide pulleys H, and a driving pulley G geared to an electric motor E. The arrangement. of electric circuits for controlling the motor is shown in Fig. 4, and comprises a storage battery V, a reversing switch P automatically thrown over at the limit of movement of the model, a similar reversing switch at the opposite limit of movement, and switches T, U which accelerate and decelerate the motor at suitable distances from the limits.
Patent GB-546689-A (GB)
Title: Improvements relating to the manufacture of templates and tools
IPC: B23C3/00
Filed: 1940-12-23
Abstract: 546,689. Making templates and jigs. WINTERBOTTOM, I. Dec. 23, 1940, Nos. 18013/40 and 173/41. [Classes 83 (ii) and 83 (iii)] Milling-machines; copying and reproducing mechanism.-In making templates or jigs, a drawing-machine is used to cut the drawing direct into a matrix which is used as a first pattern for actuating the copying mechanism of a known reproducing machine by which the jigs are cut. The matrix may be of synthetic resin or other plastic or of aluminium or other soft metal. A bed or frame 10 within which the matrix block is mounted has bearings for parallel screws 11 interconnected by a shaft 14 and bevel gearing 15 and rotated in unison by a hand crank 17 operating in conjunction with a micrometer head 17a. A beam 18 is moved parallel to one side of the frame by the screws 11 and carries a longitudinal slide 20 operated by a screw 21 from a hand wheel 22 associated with a micrometer head 23. A cutting tool 24, Fig. 2, which may be driven by a flexible shaft 28 is mounted in a bore 20a in the slide 20, the depth of cut being determined by a collar 26a. For cutting inclined lines or circular arcs, a trammel bar 31 may be pivoted in the bore 20a and may be moved over a protractor quadrant 32. The bar carries a secondary slide 34 provided with a bore for the reception of tool 24 and actuated by a screw 33 with a hand wheel 35 with a micrometer head 36. Arcs of predetermined radius may be cut by moving the trammel bar by hand about its trunnion. For curves of small radius the centre may first be marked and then a pair of compasses, one leg of which carries a tool such as 24, used to cut the required curve. Incisions of various shapes may be cut by using rotary tools of corresponding form. For cutting very soft materials a blade-like cutter 25, Fig. 3, guided by arms 39, 40, may be used. The slides 20, 34 may be fitted with adjustable taper gibs to take up wear. Specifications 476,568 and 485,146, [both in Group XX], are referred to.
Patent GB-744638-A (GB)
Title: A device for moving pens clear of the chart in a recording instrument
Inventor: TAYLOR JOHN ARTHUR HENRY
IPC: G01D15/24
Filed: 1953-06-29
Abstract: 744,638. Recording-apparatus. KENT, Ltd., G. June 28, 1954 [June 29, 1953], No. 18019/53. Class 106 (4). A device for positively moving the pens away from the chart in a recording-instrument is positively actuated by a Bowden cable. As shown, at one end of a Bowden cable, the sheath 1 and inner member 2 are attached to the ends of levers which pivot on a fixed member 6 having two stops 10, 11, a spring 16 linking the other ends of the levers at different distances from the pivots, so that, when the Bowden cable is actuated, the lever 13 moves until it meets the stop 11 whereupon the other lever leaves the stop 10 and through a scythe shaped member 9 moves the pens clear of the chart. If the apparatus has an indicating-pointer, this is moved clear of the chart first during movement of the lever 13 by the action of a hole therein on a bell-crank lever 20. A door limit stop comprises two members 26, 27 hinged together at 28 and to the door 24 and case 22 at 29, 30. Also pivoted to the case at 30 is a lever 31 attached to a sector 32 to which is attached the inner member of the Bowden cable, an outer sector 34 being provided to anchor the sheath. A hook piece 36 is pivoted on the lever 31 and is controlled by a spring 39 to remain either along the lever 31, which may then be manipulated by a finger piece 35 to actuate the cable, or to remain as shown for engagement with a projection from the pivot 28 whereby the cable will be actuated automatically by opening the door.
Patent GB-947528-A (GB)
Title: A process for applying a terminal connecting member to a semi-conductor device
IPC: H01L21/00
Filed: 1961-05-17
Abstract: 947,528. Semi-conductor devices. SIEMENSSCHUCKERTWERKE A.G. May 17, 1961 [June 28, 1960], No. 18030/61. Heading H1K. In a process for applying a terminal connecting member to a semi-conductor device which has electrodes consisting of a metal alloyed to the device, the electrode is re-melted by means of induction heating and attached to the terminal device by the molten alloyed metal. In the arrangement shown in Fig. 1, a rectifier device 19 is used which has been prepared by placing on a gold boron foil a disc of silicon of high resistivity and a gold antimony foil and heating the assembly under pressure in a graphite powder. This produces highly doped P and N zones with silicon gold eutectics on the disc surface which form the electrodes. This disc is placed on a silver-plated molybdenum block 17 previously hard soldered to a copper support 16. The upper connection is made to a hollow silver or copper cylinder 20 with a reduced slotted portion at its lower end. A silver foil 21 is introduced into the cylinder and held in contact with the rectifier by a graphite block 22 and weight 23. The copper block is supported in a holder 15 which may be raised to allow the insertion of the device when the lid 5 of a glass or quartz vacuum vessel is removed. The support is then lowered, the vessel exhausted and a 1.5 megocycle supply fed to a liquid cooled induction coil 9. The coil heats the connecting members so that heat is conducted to melt the eutectic and form the required connection. Fig. 2 shows an assembled rectifier device in which the upper contact device consists of a silver plated molybdenum disc 36 hard soldered to a contact cup 37. Connection to the upper terminal is made by a short length of braid 38 with end plugs 39, 40 which are nipped in the cups 37, 44. The enclosure of the device consists of a ceramic tube metallized at its ends to make connection to parts 43, 41. The edge of base 21 is flanged over and joined in vacuum relation to the connecting portion 41. Specification 863,010 is referred to.
Patent GB-106436-A (GB)
Title: Safety Hat Fastener.
Inventor: SUMMERS JANE
IPC: A42B7/00
Filed: 1916-12-16
Abstract: 106,436. Summers, J. Dec. 16, 1916. Hats, securing to head.- A device for use in securing hats to the head consists of a flat piece of metal or celluloid, the upper part 1 of which is a square frame which is stitched to the hat head band, and the lower part 2 is a loop through which a hair pin is passed into the hair.
Patent GB-882578-A (GB)
Title: Low resistance electrolytic tilt switch
Filed: 1960-05-23
Abstract: 882,578. Mercury switches. BENDIX CORPOKATION. May 23, 1960 [May 29, 1959], No. 18143/60. Class 38 (5). In a tilting switch, two electrodes 18, 20 are spaced apart above a low resistance member 26, which may be of platinum, conduction taking place through the electrolyte and the member 26. The resistance of the switch is reduced due to the decreased current path in the electrolyte, resulting in a smaller heat loss.