baber/WOPTO huggingface dataset:
Patent GB-1027172-A (GB)
Title: Improvements in or relating to ultrasonic generators
Inventor: ANNIS ALEXANDER DAVID
IPC: B06B1/02
Filed: 1961-06-23
Abstract: 1,027,172. Valve and transistor oscillating circuits. MULLARD Ltd. Sept. 21, 1962 [June 23, 1961], No. 22833/61. Headings H3F and H3T. An oscillator operating into a transducer is provided with positive feedback dependent upon the current in the transducer and negative feedback dependent upon the voltage across the transducer. The valve 1, Fig. 4, feeds a magnetostrictive transducer 10 via a transformer 7, the circuit being tuned by means of a capacitor 11. Regeneration is obtained by means of a second transformer 13, the primary of which is in series with that of the transformer 7 and the secondary 16 is connected to the grid of the valve via an adjustable potentiometer 16. The secondary 15 is parallel resonated by capacitor 19 to the frequency at which the transducer 10 is series-resonant. Negative feedback is obtained by earthing one terminal of the transducer 10 and connecting the other to the low potential terminal 17 of the potentiometer 16. The arrangement may also be used with a piezoelectric transducer, in which case the capacitor 11 is replaced by an inductor (Fig. 6, not shown). In a push-pull version, each of the oscillator valves 1, 1<SP>1</SP>, Fig. 5, feeds one end of the primary of a push-pull output transformer 7. Regeneration is obtained by means of a transformer 13, the primary windings 14, 14<SP>1</SP> of which are in series with the respective anode circuits and the tuned secondaries 15, 15<SP>1</SP> feed the respective grids via potentiometers 18, 18<SP>1</SP> respectively. Negative feedback is obtained by returning the low potential ends of the potentiometers 18, 18<SP>1</SP> to tappings 20, 20<SP>1</SP> respectively on the primary winding of the transformer 7. The arrangement may also be used with transistors.
Patent GB-751917-A (GB)
Title: Electromagnetic relay
IPC: H01H51/06
Filed: 1954-08-06
Abstract: 751,917. Electromagnetic relays. STANDARD TELEPHONES & CABLES, Ltd. Aug. 6, 1954 [Aug. 12, 1953], No. 22916/54. Class 38(5) The E-shaped iron circuit of a relay comprises two similar E-shapedstampings 1, 11 having their cores 2, 21 welded or riveted together. An insulating contact-carrying plate 30 together with a mounting bracket 13 are fixed to lugs (not shown) on the base of the stampings, the contacts 9, 10 comprising wire springs, the free ends of the fixed springs 9 being supported by a toothed insulating plate 5 fixed in notches 8 in the stampings. The contacts 9 have hammer-like contact tips with V-shaped recesses therein which, with the movable contacts 10, form change-over contact sets operated by an armature 20 pivoted on the edge of the yokes 3, 31. A groove 201 in the armature supports a cross-bar 18 carrying on both sides of the relay an insulating toothed bar 17 which operates the contacts 10 when the coil 4 on the cores 2, 21 is energized, the lower ends of the bars 17 being mounted in apertures 152 in a V- shaped return spring 15 fixed at its end 151 in slots 16 in the plate 30. A transparent insulating cover may enclose the relay. In a modification, Fig. 4a, a further pair of toother insulating bars 25 is provided and returned by a further spring 26. The movable contact springs are the springs 9 and certain are operated by the bars 17 and certain by the bars 25 to produce sequentially-operating changeover 'contact sets.
Patent GB-771739-A (GB)
Title: Improvements relating to high voltage current transformers
Inventor: WELLINGS JOHN GALE
IPC: H01F38/30
Filed: 1955-08-09
Abstract: 771,739. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 9, 1955, No. 22948/55. Addition to 739,497. Class 38 (2). A high voltage current transformer as claimed in the parent Specification is modified as shown in Fig. 3 for use with the conductors A, B, C to a T-off junction, the conductors A, B, C forming the primary windings of the current transformers and associated with individual insulating bushings 2, 3, 4, respectively, the associated cores and secondary windings being located within the metal shell 1. In another embodiment the conductors A, C are carried jointly through the insulating bushing 3 to the conductor B, two secondary windings 10, 11 or 12, 13 being provided on each of conductors A, C only, the windings 11, 13 being connected so as to indicate the vector difference of the currents in conductors A, C, that is, the current in conductor B. In yet another embodiment only one secondary winding is provided on conductors A, C, only.
Patent GB-598720-A (GB)
Title: A new or improved material for use in the construction of seats
IPC: A47C7/24
Filed: 1945-09-07
Abstract: 598,720. Walls; floors &c. FORD, R. C. Sept. 7, 1945, Nos. 23063 and 26986. [Class 20(iv)] [Also in Groups VIII and XIV] Walls, partitions, floors and floor cover- 'ings are formed from corrugated sheet metal 1, and resilient strips of material 2, such as rubber, by bonding the strips in the corrugations on one or both sides. The lower surfaces of the strips may be channelled to provide air cushions and a metal retaining strip 3, may be provided at the edges. The strips, which may be coloured may be interrupted or disposed to form patterns and the exposed metallic parts can be polished.
Patent GB-239378-A (GB)
Title: Improvements in and relating to means for disinfecting artificial dentures
IPC: A61L2/00
Filed: 1924-12-22
Abstract: 239,378. Williams, E. E. Dec. 22, 1924. Disinfecting; antiseptics.-Relates to vessels containing a block of plaster of Paris and an antiseptic so that water poured in becomes charged with the antiseptic to form a renewable bath into which artificial dentures may be placed, and consists in forming the vessel a with a recess c to receive the antiseptic block : in forming the block of plaster of Paris together with menthol, eucalyptus, thymol, oil of wintergreen, and liquor rosae dulcis; and in casting the block in a perforated aluminium or other metal cup d.
Patent GB-874517-A (GB)
Title: Improvements in and relating to anti-friction bearings
IPC: F16C33/78
Filed: 1959-07-06
Abstract: 874,517. Stuffing-box substitutes. ROSICARELLI, M. July 6, 1959 [July 7, 1958], No. 23125/59. Class 122 (5). Packing for a ball or roller bearing comprises a ring of or incorporating a magnetized material, the ring being held magnetically to at least one of the bearing races 10, 11. The embodiments shown in Fig. 1 are a magnetized packing ring 14 of metal, for example steel, which bears magnetically against both races 10, 11 and a packing ring 15 of rubber, polytetrafluorethylene or other suitable synthetic plastic and elastomeric material having its outer peripheral portion held against the outer race 10 by a magnetized metal ring 16, preferably bonded to the washer 15, and its inner peripheral portion engaging the inner race 11. Other embodiments shown in Fig. 2 are (a) a channel section packing ring 17 that fits into the space 13 with its flanges 17a, 17b contacting the cylindrical surfaces of the outer and inner races respectively, the flange 17a being held against the outer race 10 by a magnetized ring 18 which may be a segmental metal ring or a continuous ring of elastomeric material having magnetized powder dispersed therein and (b) a packing ring 19 comprising outer layers 20, 21 of rubber &c. and an intermediate layer 22 of rubber mix charged with magnetized powder material. In further embodiments, Fig. 3 (not shown), the packing rings are of elastomeric material with magnetized powder dispersed therein.
Patent GB-1034227-A (GB)
Title: Improvements in or relating to magnesium base alloys
Inventor: FISHER PHILIP ANDREW
IPC: G21C3/07
Filed: 1964-06-04
Abstract: A magnesium base alloy has the following percentage composition:-  Al 0.05 - 0.3 Si 1 - 1.7 Be 0 - 0.1 Ca 0 - 0.4 Mn 0 - 0.25 Zn 0 - 0.1 The alloy is particularly suitable for canning fuel in a nuclear reactor.
Patent GB-1492996-A (GB)
Title: Cutting machines
IPC: B26D1/08
Filed: 1975-05-27
Abstract: 1492996 Cutting apparatus CONSTRUCTIONS MECANIQUES F LAROCHE & FILS 27 May 1975 [27 May 1974] 23215/75 Heading B4 [Also in Division D1] A cutting machine for, e.g. cutting-up bales 20, Fig. 3, of textile fibres, comprises a device 5, 9, 12 for loading a bale into the machine, feeding means 2, 3, Fig. 2, for advancing the bale towards a guillotine-type cutting device, the various functions of the machine being actuated under the control of a synchronizing device such that successive slices of predetermined thickness are cut from the bale. The loading device includes a frame having two plates 5, 9 and pivotably mounted on an axis 43, Fig. 3; the frame is tilted from a loading position to a cutting position by means of an hydraulic ram 12. The feeding means comprises a plate 3 connected to an hydraulic ram 2, the feed being incrementally controlled by a pulse counting device (32, 36, 37), Fig. 7 (not shown). The guillotine blade 19 is mounted on a beam 18 which is actuated by hydraulic rams 15 and guided by bars 16; the blade cutting edge coacts with a nylon bar 29. In a modification, Fig. 11 (not shown), a pair of loading frames are provided such that as one is being loaded with a bale, the other is in the cutting position and loaded with a bale. In a further modification, Fig. 9 (not shown), the loading device comprises a box 50 divided into two compartments each closed by a respective door 62. The box is pivotally mounted on a carriage 53 such that as one bale is in the cutting position, the other compartment is being loaded. When the cutting of the one bale is completed the carriage is moved and the box rotated a half turn by means of respective rams 55, 56 thereby reversing the position of the compartments.
Patent GB-517741-A (GB)
Title: Improvements in and connected with drip cups for bottles, drinking vessels and the like
IPC: A47G23/03
Filed: 1938-08-05
Abstract: 517,741. Drinking - vessels. LACROIX, R. G. P. L. DE. Aug. 5, 1938, No. 23239. [Class 128] [Also in Group XVII] A drip cup for sauce and other bottles, drinking vessels and the like, is provided with. a plurality of clip members 3 formed on or secured to an annular or other member 4 and adapted, to hook on to a rim 2 while holding the member 4 and depending clip members free from contact with the bottom and other interior surfaces of the cup so as to prevent drip. The clips 3 are made spring strip as is also the member 4 which is preferably of greater radius than the interior rim 2 of the drip cup. The clips 3 are hooked at 5 to engage the rim 2. Free ends 6 engage the bottle or the like. In a modification, the member 4 and clip members are formed in one from a single length of wire.
Patent GB-1504327-A (GB)
Title: Electronic musical instrument
IPC: G10H1/043
Filed: 1975-05-28
Abstract: 1504327 Electronic musical instruments NIPPON GAKKI SEIZO KK 28 May 1975 [31 May 1974 (2)] 23274/75 Heading G5J A digital electronic musical instrument has one or more keyboards 1; a logic arrangement 2, 3 (Figs. 3, 4, not shown) for generating an address code representing a depressed key; a memory 7 which delivers a first numerical value representative of the desired frequency on receipt of the corresponding address code; a random pulse generator 10; means 9 for generating a second numerical value dependant upon a "depth" signal 11 and the presence or absence of a random pulse; a calculator 8 which adds the first and second numerical values; an accumulator 5 which is repeatedly incremented by the value from calculator 8; a memory 6 which stores a representation of the required waveshape and produces an appropriate tone in response to the output of the accumulator; and an envelope memory 21 which controls the amplitude of the musical tone. The tone memory 6 stores the waveshape as 64 sampled numerical values so that a complete waveform is read from the memory 6 for every 64 counts registered in the highest order 5c of the accumulator 5. The rate at which these 64 counts are received and therefore the musical note generated depends upon the numerical value added into the lower orders of the accumulator 5 at each dock period which in turn depends upon the value delivered from the read only memory 7 to represent the nominal frequency and the value from means 9 which represents a random frequency modulation of the output tone. The apparatus delivers a tone which is randomly shifted up or down from the nominal value by up to 18 Hz dependant on the depth signal. The result is a "husky" tone resembling a wind instrument for instance. In a modification the depth signal is varied from maximum to zero during the attack period of the envelope, producing a pure tone thereafter. The apparatus as described can play up to twelve notes simultaneously operating on a time sharing basis.
Patent GB-365987-A (GB)
Title: Improvements in or relating to the mooring and towing of airships
IPC: B64F1/14
Filed: 1931-08-19
Abstract: 365,987. Mooring airships. LUFTSCHIFFBAU Z E P - PELIN GES. and DURR, L., 19, Zeppelinstrasse, both in Friedrichshafen - on - Bodensee, Germany. Aug. 19, 1931, No. 23323. Convention date, Aug. 20, 1930. [Class 4.] For mooring an airship and for towing it into and out of a shed, a rigid triangular frame 1, 2, 3 is mounted on trolleys 10 and stayed laterally by cables 5, 6, 9 to trolleys 7 moving on parallel tracks 8. The trolleys 10 run on the ground or upon rails 11 and the apparatus is moved by a tractor 13. The airship is moored to a fitting 4, of usual construction, at the apex of the triangular frame.
Patent GB-233719-A (GB)
IPC: C06F1/20
Abstract: 233,719. Rotter Maschinenfabrik, A. May 7, 1924, [Convention date]. Cutting-up. - In a match machine a blank of wood, cardboard, &c. corresponding to the breadth of a number of match strips is cut longitudinally and transversely so that the longitudinal cuts separating the individual sticks are staggered relatively by half the breadth of a stick and the cut forming the tips run transversely in zig-zag fashion so that the sticks engage one another by their tips. The zig-zag cut is preferably made so that the sticks of one strip thus formed are slightly longer than those of the other, so that when the strips are finally assembled in pairs with their uncut edges superposed the heads do not contact with one another. The blanks which have already been partially cut through by cuts 90, Fig. 3, and are in lengths of e.g. a metre, are laid in a receptacle 2, Fig. 8, over a stick pusher 3 which, when moved by a lever 6, transfers the lowest blank immediately below a knife carrier 4. A longitudinal cutter 80, Fig. 29, having a zig-zag edge makes a cut 93 and knives 35 held by intermediate plates 74 divide the blank into separate strips by cuts 91. The individual sticks are formed by shorter knives 78 held by intermediare plates 75 and connected by screws 96 in groups which are secured to the knife carrier by claws 77 and adjusted longitudinally by screws 82. In order to regulate the depth of a cut an eccentric bush 79 is arranged on the pivot of the knife carrier, and screws 81 are provided for the zig-zag knife 80.
Patent GB-431975-A (GB)
Title: Improvements relating to magnetic iron alloys and method of manufacturing same
IPC: C22C38/02
Filed: 1934-08-14
Abstract: Modifications of the magnetic-iron alloys set out in the parent Specification contain also 0,01-2,5 per cent of silicon, with or without up to 1 per cent of titanium.  The alloys are made by melting together iron reduced without contact with carbon or electrolytic iron, high-phosphorus hydrogen-reduced iron or low carbon ferro-phosphorus, and the required amounts of silicon and, if required, titanium.
Patent GB-392944-A (GB)
Title: Improvements in and relating to converter systems employing metal vapour valves
IPC: H02M7/51
Filed: 1931-08-20
Abstract: 392,944. Converting. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. Aug. 20, 1931, No. 23505. Convention date, Sept. 10, 1930. [Class 38 (ii).] In a system for converting D.C. to A.C. by means of a grid controlled discharge device, means are provided for adjusting automatically the displacement of the ignition point of the anodes with respect to the idle running point in dependence on the ratio between the A.C. and D.C. voltages, the idle running point being the point in the cycle at which the D.C. and A.C. voltages are equal. The grids 18 of the discharge device 3 are coupled by means of current transformers 6 to the circuits of valves 7, the anodes of which are connected to the secondary of a grid transformer 4 and the cathodes of which are connected to tapped resistances 8 which bridge the D.C. supply. Thus a composite voltage is applied to each valve 7 which determines its moment of conduction and the energization of the corresponding grid circuit. Two methods of automatically adjusting the displacement of the ignition point in the discharge device 3 are described. In one method the ratio between the D.C. and A.C. voltages connected to the grid system is made greater than the ratio between the voltages of the main D.C. and A.C. circuits. In the other method the saturation of the grid transformer is made smaller than that of the main transformer. The rate at which the voltages on the secondary windings of the current transformers build up is determined by resistances which bridge the windings. The grids are biased negatively by means of resistances 9, 10 which are respectively in the exciter anodes circuit and the main load circuit. Since the voltage drop in the resistance 10 varies with load an additional control of the moment of ignition dependent on load is obtained. Specification 263,152, [Class 38 (ii), Electric currents, Converting &c.], is referred to.
Patent GB-969183-A (GB)
Title: Brake lining wear warning devices
IPC: F16D66/02
Filed: 1963-06-13
Abstract: 969,183. Brake lining wear warning devices. GENERAL MOTORS CORPORATION. June 13, 1963 [June 22, 1962], No. 23589/63. Heading F2E. A brake lining wear warning device 18 comprises a flat fulcrum portion 22 for resiliently engaging the inner surface of the flange 14 of a brake shoe 10 and a resilient cantilever portion 24 connecting the fulcrum portion 22 to a feeler portion 50 which is shaped for extending through the brake shoe into an aperture 60 in the brake lining 16, whereby when the brake lining has worn down, as shown in Fig. 4, the feeler portion can engage the brake drum 68 and vibrate as a cantilever spring about the flat fulcrum portion 22 to give an audible warning to the driver of the vehicle. One or more locating tabs 36, 40, 42, 44 are provided for extending into corresponding apertures in the brake shoe to locate the device 18. If the operator ignores the signal and the lining is worn further, additional brake applications cause the back of the lining and the mounting plate 14 to be moved closer to the drum 68 until the tab 46 lifts the flat fulcrum portion 22 out of engagement with the flange 14 of the brake shoe whereupon the spring vibrates at a pitch determined by the length, width and thickness of the flats 22, 24 and 26, a second flat fulcrum portion 34 remaining in engagement with the flange 14 and becoming the vibration fulcrum. This results in a change in pitch of the audible signal generated by the spring as the lining continues to wear and serves as a further warning to the vehicle operator.
Patent GB-1352947-A (GB)
Title: Electrically conductive filament
IPC: H01B1/24
Filed: 1971-04-19
Abstract: 1352947 Conductive fibre; yarns TEIJIN Ltd 19 April 1971 [10 March 1970] 23642/71 Headings D1K D1P and D1W [Also in Division B2] An electrically conducting fibre is obtained by applying as a coating on the surface of a 5 to 50 denier fibre substrate of a synthetic organic polymer of paste comprising an acrylonitrile/butadiene copolymer, a phenolic resin compatible therewith, a finely divided electrically conductive material, a voltatile organic solvent for the acrylonitrile/butadiene copolymer and the phenolic resin and, optionally, one or more curing agents, viscosity-increasing agents and/or antioxidants, applying to the coated substrate 0.3-20% (of the final weight of the fibre) of the polyisocyanate of low molecular weight and heating the coated substrate to cure the coating. The fibres may be obtained from polyamides, particularly polycapromide and polyhexamethylene adipamide and synthetic linear polyesters such as polyethylene terephthalate, polyacrylonitrile, polyvinyl acetyl and polyimides. The acrylonitrile/butadiene copolymer may contain 25-45% of acrylonitrile. The phenolic resin is preferably oilsoluble. Suitable materials are phenolic resins modified with natural resins such as rosin with natural oil such as cashew nut shell oil and pre-condensates of formaldehyde with a phenol may be substituted, for example with a t-butyl, t-amyl, phenyl or cyclohexyl groups. The finely-divided conductive material may be metal powder such as gold, platinum, aluminium, copper, nickel or tungsten or carbon such as finely divided graphite and electrically conductive blacks such as acetylene carbon black, conductive furnace black and conductive channel black, and the particle size is preferably not more than 0.5 microns. A viscosityincreasing component such as a coumaroneindene resin or an antioxidant may be present. The coating composition may be applied by immersion, coating or spraying. Suitable solvents for the coating composition are listed. Many suitable polyisocyanate compounds are also given. The polyisocyanate may be applied immediately after the coating composition is applied to the fibre, or after it has been dried for form a solid layer. It may be applied by immersion, spraying or coating and it may be in solution in an organic solvent of which many are listed. Textile materials composed of normal organic textile fibres and a small proportion, even less than 2%, of the conductive fibres have durable anti-static properties. The conductive fibre and the organic textile fibres may be associated by mixed spinning, mixed twisting, mixed weaving, mixed knitting or any other suitable technique. The former need not be necessarily distributed evenly in the latter. Carpet yarns, weaving or knitting yarns, or sewing threads can be first mixed with the conductive fibre and then tufting, weaving, knitting or sewing carried out with a mixture.
Patent GB-185421-A (GB)
Title: An improved process for transforming vegetable matter into paper pulp
IPC: D21C3/00
Filed: 1922-08-31
Abstract: 185,421. Mourlaque, G. A., and Parent, J. J. B. Sept. 1, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Pulp, preparation of.-Vegetable material is transformed into pulp suitable for paper, &c. by treatment with oxygen. Finely divided and moistened wood is placed in an autoclave and oxygen, which may be ozonized and obtained from liquid air, is led under a pressure of 2-5 atmospheres for 3-6 hours. Alternatively, the oxygen may be generated in the autoclave by dissolving sodium peroxide in water or bv the action of sulphuric acid in sodium or barium peroxide. In the latter case, the sulphate formed assists in the solution of the ligneous substances.