baber/WOPTO huggingface dataset:
Patent GB-883067-A (GB)
Title: Improvements in or relating to methods of manufacturing monocrystalline bodies
IPC: C04B35/51
Filed: 1958-06-23
Abstract: Single crystals are prepared by slowly cooling a melt including a flux in a crucible while a local part of the surface of the melt is maintained at a temperature lower than that of the remaining part of the melt by means of a gas flow.  The crystal may be a ferromagnetic oxidic compound of formula xAO.yMeO.zFe2O3 where x>0 and z>x+y, A is Ba, Sr, Pb or Ca and Me is Fe, Mn, Co, Ni, Zn, Mg, Cu or the bivalent complex <FORM:0883067/III/1> , grown in a melt of the compound and a flux of compounds or mixtures of compounds of AO and Fe2O3.  In examples crystals are obtained by first melting mixtures of various oxides and carbonates in a platinum crucible in a vertical tubular oven in an atmosphere of oxygen, and then slowly cooling the oven while oxygen is blown through a tube on to a part of the surface of the melt; the crystals have compositions corresponding to <FORM:0883067/III/2> , <FORM:0883067/III/3> , <FORM:0883067/III/4> , <FORM:0883067/III/5> p  , Ba0,86Sr1,14Co2Fe12O22, Ba0,4Sr1,6Co2Fe12O22, <FORM:0883067/III/6> , <FORM:0883067/III/7> , <FORM:0883067/III/8> , and <FORM:0883067/III/9> Crystals of germanium and silicon may also be prepared.
Patent GB-1300198-A (GB)
Title: Starting machine for athletic running events
IPC: A63K3/02
Filed: 1971-04-19
Abstract: 1300198 Starting blocks JUNGHANS GmbH GEB 19 April 1971 [28 Jan 1970] 20056/71 Heading A6D A slotted rail 21 carrying starting blocks 40 is suspended, e.g. by springs 15, from a support rail 10 secured at 10a, 10b to a running track so that the rail 21 is resiliently longitudinally displaceable and at least partially surrounds the support rail 10. A stop, e.g. an adjustable eccentric 28, limits the displacement and a contact 17, 18 is actuable by such displacement to provide a signal indicating that a runner has started to move. The slotted rail 21 may completely enclose the support rail 10 or may be U-shaped in cross-section opening either upwardly or downwardly and its resilience is provided by an adjustable spring and stop arrangement 23, 26. A loudspeaker for providing a "start" signal may be sited on either the rails or the starting blocks. Electric leads 29 for the loudspeaker and contact 17 are carried through the hollow support rail 10. The blocks 40 have one or two pins for engagement in the slots 22 and an angle piece 37 for engagement over the edge of the rail 21. The angle of the abutment 33, which may be of plastics, for the feet of a runner is adjustable by a pin and rack arrangement 35, 36.
Patent GB-583331-A (GB)
Title: Improvements in electric snap-action switches
IPC: H01H5/02
Filed: 1944-10-18
Abstract: 583,331. Electric motor controllers and switches. GRAY, W. T., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Oct. 18, 1944, No. 20170. [Classes 38 (iii) and 38 (v)] In a snap-actioh switch, specially for use in traction controllers, movement of an operating member such as a cam 16 causes an electromagnet 15 to be energised to hold a contact arm 3 fast while a spring 11 is being strained; further movement de-energises or reverses the energisation of the electro-magnet allowing the arm 3 to move into its other position. In the form shown, the arm 3 is pivoted at 4 and carries an armature 5 which moves between the poles 6, 7 of the electro-magnet under the action of a spring-loaded pin 10 on a cam-actuated operating-arm 9 carrying an arcuate contact 13 co-operating with a contact 14 to 'energise the magnet 8. In the closing movement, the pin 10 presses on the contact arm and simultaneously contacts 13, 14, energise the magnet and hold the armature 5 against the arm 6. When the contact 13 moves past the fixed contact, the magnet is de-energised, thus allowing the contact arm to move by the action' of the pin 10. The opening movement of the cam 16 first remakes contacts 13, 14, thus energising the magnet and holding the armature against the arm 7, and then breaks this circuit to allow motion of the contact arm under the action of a " throw-off " spring 18. In a modified form the spring-loaded pin 10 may be mounted on the contact arm 3 and directly operated by the cam whilst an auxiliary switch may be used to control the electro-magnet. A modified form of electromagnet may be used, Figs. 2 and 3 (not shown).
Patent GB-629040-A (GB)
Title: Improvements in or relating to clips for towels
IPC: A47K10/14
Filed: 1947-07-26
Abstract: 629,040. Clip brackets. MACDONALD, R. July 26, 1947, No. 20187. [Class 52 (v)] A clip for supporting towels has a base 1 provided with two curved tubular resilient members 2, 3 which are in contact with each other. Adjacent faces of the members 2, 3 have semi-circular recesses 6, 7 to allow the insertion of a towel. The base is provided with ribs 5 which, when the base is secured to a support, press the members 2, 3 against each other. In a modification the ribs 5 are omitted and the base has extensions which engage with a holder.
Patent GB-842924-A (GB)
Title: Improvements relating to electronic analogue digital converters
Inventor: KNOWLES ALFRED JOHN
IPC: H03M1/00
Filed: 1957-06-26
Abstract: 842,924. Analogue-to-digital converters. METROPOLITAN-VICKERS ELECTRICAL CO. Ltd. June 20, 1958 [June 26, 1957], No. 20188/57. Class 40 (1). A voltage analogue is converted into a digital equivalent by apparatus comprising four dekatrons adapted to count incoming pulses, the cathodes being so connected to successive tappings on a resistance chain that the current through each tube produces a potential drop along the resistance chain of a value dependent on the cathode which is operative, the total drop being representative of the total count of pulses, means being provided for comparing this potential drop with the input voltage and means for stepping the tubes to achieve a balance. The four dekatrons T1, T2, T3 and T4 count in units, tens, hundreds and thousands, respectively and are connected to tapped resistors R1, R2, R3 and R4, themselves connected in series through adjustable resistors R5, R6, R7. The potential across the resistor chain appears at A and is dependent upon which of the cathodes is conducting in each dekatron, i.e. upon the count registered by the dekatrons. The voltage at A is compared in a detector amplifier with the unknown voltage which energizes an " up " or a " down " terminal according as to whether the unknown voltage exceeds or not the voltage at A. If the " up " terminal is energized " stepup " gates C are opened to allow pulses from a generator to be applied to the guides of dekatron T1 so as to step-up the value registered. Carry pulses between the dekatrons pass through the gates C to increase the value in succeeding dekatrons. If the " down " terminal is energized step-down gates AC are opened to cause the pulses from the generator to subtract from the value in the counter. In either case the addition or subtraction continues until the potential at A balances the unknown voltage and neither the " up " or " down " terminal is energized. The value registered then represents the unknown voltage. Serial mode outputs are taken from gates SU1 and SD1. The apparatus may be adapted to measure a resistance, by determining the voltage produced by passing a standard current or a current may be measured by passing it through a standard resistance.
Patent GB-991007-A (GB)
Title: Mining apparatus
Inventor: POTTS MICHAEL CHARLES
IPC: E21D23/00
Filed: 1962-05-25
Abstract: 991,007. Advancing mine roof supports. DOWTY MINING EQUIPMENT Ltd. May 21, 1963 [May 25, 1962], No. 20198/62. Heading F1P. [Also in Division G4] In a roof support assembly wherein a series of fluid pressure operated roof supports are advanceable in a predetermined sequence, the number of roof supports advanced, is counted by means sensitive to variations in the condition of. fluid in a conduit along which fluid flows when each support undergoes an advancing operation. As shown, the number of supports advanced is recorded by a counter 20 sensitive to changes in pressure in a supply conduit connected to the roof supports. The counter 20 comprises a piston 24 slidable in a bore 25, and having a piston rod 23 connected by a lever 22 to the operating shaft 21 of a counting mechanism 18 which has a display window 19. The piston 24 is continuously urged towards a stop 27 by a spring 28 and by fluid pressure supplied to the bore 25 through a port 29. Pressure in the supply conduit is communicated through a port 32 to a chamber 31 so that each time a roof support undergoes an advancing operation, the fall in pressure which occurs in the supply conduit allows the piston 24 to move to the position shown and thereby move the shaft 21 to add one to the number shown in the window 19. A port 34 of a piston housing 38 is connected to a further conduit which becomes pressurised when an advancing sequence has been completed to thereby move a piston rod 39 and return the counter to zero. In a second embodiment a flowmeter located in a return conduit from the supports, senses the advancing operations and operates a counting mechanism. Specification 991,008 is referred to.
Patent GB-824326-A (GB)
Title: Improvements relating to voltage stabilizing circuits
IPC: G05F1/32
Filed: 1956-06-29
Abstract: 824,326. Automatic regulation. GENERAL ELECTRIC CO. June 29,1956 [June 30, 1955], No. 20243/56. Class 38 (4). In a voltage stabilizer of the kind in which the load is shunted by the parallel combination of a capacitor and a saturable reactor using as a core a material having a substantially rectangular magnetization curve; temperature compensation is provided by a second similar stabilizer using a core material with a different Curie temperature, and subtracting a portion of the voltage across one of the reactors from the voltage across the other. The first stabilizer consists of a linear reactor 12 in series with the parallel combination of capacitor 14 and saturable reactor 16. The second, compensating, stabilizer consists of linear reactor 13 in series with the parallel combination of capacitor 15 and saturable reactor 17. The reactor 17 is either tapped, Fig. 2 (not shown), or has a secondary winding, and the load 19 is connected either to the tapping or to the secondary winding. It is shown mathematically that by opposing the two outputs, the temperature variable components cancel.
Patent GB-848152-A (GB)
Title: Improvements in and relating to a flexible atomizing brush and comb apparatus
IPC: A45D24/10
Filed: 1958-06-25
Abstract: 848,152. Combs; spatulas. TAJAN, F. N. June 25, 1958 [June 26, 1957], No. 20340/58. Classes 30 and 131 [Also in Group XXIII] A comb consists of a resilient, squeezable container 2 having on one face 6 integrally moulded, tapered teeth 7 and an atomizing port 12 for directing the contents of the container, when squeezed, parallel to the teeth on to a surface to which the teeth are being applied. The container may be sub-divided into two compartments, each having an atomizing port. In this case the teeth may be in two areas, the teeth of each area being of a differing shape.
Patent GB-1055813-A (GB)
Title: Improvements in adjustable louvres
Inventor: CHIANG JOSEPH YAO
IPC: F24F13/15
Filed: 1964-05-19
Abstract: 1,055,813. Window operating mechanisms. METAL INDUSTRIES Ltd. May 19, 1964 No. 20595/64. Heading E2M. [Also in Division F4]. A louvre for metal window frames comprises blade clips secured by screws to blocks 15 pivoted in the jambs of the window frame which blocks in turn are connected by links to an operating bar 13 housed within a jamb and moved by a handle 12 which forms an extension of one of the links. A plate 21 pivoted to the jamb has an operating portion 23 and a clip 24 to engage a rivet 20 on the bar 13 to hold the louvre blades in position. A beading on the blade clips engages a beading on the jambs to provide weather proofing when the louvre is closed.
Patent GB-1071204-A (GB)
Title: Electric wave filters
IPC: H03B1/00
Filed: 1966-05-10
Abstract: 1,071,204. Filter circuits; oscillator circuits. WESTERN ELECTRIC CO. Inc. May 10, 1966 [May 11, 1965], No. 20620/66. Headings H3F and H3U. A notch filter in which the notch frequency may be varied comprises a twin-T network having a high-pass T-section parallel connected to a low-pass T-section. The high-pass section includes a ground resistor R 0  and capacitors C 1 , C 2 ; the low-pass section includes a ground capacitor C 0  and resistors R 1 , R 2 . The resistor R 2  comprises members R21 ... R 24  of different values, the particular member being selected by a switch S to obtain the desired notch frequency. As shown, the filter forms with a broad-band amplifier A an oscillator, the filter output being applied to the amplifier and a feedback loop L 1'  L 2  from the amplifier being connected to the filler input. The regenerative feed-back enables the oscillator to sustain oscillations of narrow bandwidth at the various notch frequencies determined by the switch S. The values of the resistor and capacitor components of the notch filter are chosen so that regardless of the notch frequency selected the rate of phase-shift variation varies only slightly, e.g. 8%, and hence the bandwidth remains constant; also, the transmission coefficient varies only slightly, e.g. less than 0À6 decibel The values of the resistor members R 21  ... R 24  lie along the approximately maximum horizontal portion of the curves (Fig. 6, not shown) showing the variation of the transmission coefficient at the notch frequency with notch frequency, the several curves relating to different values of R 1 .
Patent GB-1464963-A (GB)
Title: Blade mounting and tensioning apparatus
IPC: B26D7/26
Filed: 1974-05-10
Abstract: 1464963 Abrasive tools SILICON TECHNOLOGY CORP 10 May 1974 [29 June 1973] 20699/74 Heading B3D  A mounting and tensioning apparatus for an "internal diameter" silicon crystal wafer cutting blade 4 comprises clamping rings 18, 32 having outer clamping surfaces 26, 46 arranged to clamp the blade therebetween, an annular recess 30 and an opposed annular fluid channel 50 respectively disposed within the rings 18, 32 radially inwardly of said clamping surfaces, and a deformable U-section annular gasket 56, e.g. of polyurethane, retained, by ridges 52, 54, within the channel to prevent fluid within the latter from contacting the blade and, on pressurizing of the fluid, (e.g. at 1000-1600 p.s.i.) within the channel, bear on and tensioningly deform the blade into the recess 30. The fluid channel communicates with a pressurizing check valve 64 capable of withstanding 1500-1800 p.s.i. and with a diametrically opposite fitting (66, Fig. 1, not shown) bleeding air and excess fluid. The fluid is water soluble. Clamping ring surfaces 28, 48 radially inwardly of the recess 30 and channel 50 are set back from the surfaces 26, 46, and to achieve this the clamping rings may be plated on the surfaces 26, 46 with corrosion resistant material such as nickel. As shown, the rings 18, 32 are clamped together by bolts 34 the heads of which are accommodated in counterbores 40, and the clamped together rings are retained on a spindle plate 16 by bolts 20. Alternatively, the bolts 34 may be inserted from free side of the ring permitting blade change without disturbance of the ring 18. Locating pins (not shown) projecting from the ring 18 extend through locating holes in the blade into locating holes in the ring 32. The inner blade edge 68 is coated with diamond bort (70).
Patent GB-1512877-A (GB)
Title: Crushing machine clearing system
IPC: B02C2/04
Filed: 1976-05-19
Abstract: 1512877 Gyratory crushers REXNORD INC 19 May 1976 [27 May 1975] 20747/76 Heading B2A A fluid-pressure operated system of crushing bowl release for a gyratory crusher having a circumferential frame type element viz an adjustment ring 204 which is used as a part of a yieldable release system for the crushing cavity in the crusher, comprises a socket 218 in the ring 204 and a fluid operated jack 216 to actuate the release system. The jack includes a cylinder 220 and a piston 222. The cylinder is countersunk for part of its length into the socket. Thus the brushing pressure in the cylinder when in operation is at least partly absorbed by the ring 204. The top of the cylinder includes a small port 238 controlling the discharge of hydraulic fluid in the event of hydraulic failure permitting the bowl to descend slowly.
Patent GB-168741-A (GB)
Title: Improvements in contacts for electric switches and other circuit closing devices
IPC: H01H1/42
Filed: 1920-07-12
Abstract: 168,741. West & Co., Ltd., A., and Page, G. July 12, 1920. Contacts for electric switches and other circuitclosing devices of the blade and U-clip type are formed with spring-pressed reinforcing members acting at or near the centre on the inner sides of the bent-over portions of the contact clips. In the form shown in Figs. 3 and 4, the two portions of the contact clip a are secured by screws c to the block b, plungers f mounted on flat springs e passing through the sides of the contact, and pressing against the inner surfaces of the bent-over contact portions a<1>, thereby maintaining uniform contact with the sides of the switch blade d. In the form shown in Fig. 6, two pairs of plungers are mounted on the bifurcations e', e<2> of the flat spring e, the bent-over contact portions a<1> being also divided. A similar modification is shown in Fig. 8, each pair of plungers f being mounted on separate pairs of flat springs e<3>, e<4> secured by bolts c to the contact block b. In the form shown in Fig. 9, the contact consists of a U-shaped metal strip a bolted at its centre to the block b by a screw or screws c which also secure a U-shaped steel reinforcing- spring e, the ends of which are formed to exert pressure on the inner sides of the bent-over contact portions a. In the form shown in Figs. 11 and 12, parallel bars g press against the contact portions a<1>, the bars g being supported at their ends on wire springs e<5>, e<6>, which are looped at their centres over the screws c.
Patent GB-1329512-A (GB)
Title: Water-bearing explosives
IPC: H01Q1/42
Filed: 1971-04-19
Abstract: 1329512 Explosive compositions E I DU PONT DE NEMOURS & CO 19 April 1971 [17 Feb 1970] 21052/71 Addition to 1216229 Heading C1D An explosive composition in the form of a water-in-oil emulsion contains as a sensitizer an oxidizing salt of a phenylamine or of an acyclic nitrogen base of the type defined in the parent Specification 1,216,229. The composition contains an organic water-insoluble fuel as the oil phase and also contains an inorganic oxidizing salt, a lipophilic emulsifier, and 5-50% by volume of gas bubbles. Inorganic oxidizing salts and additional fuels as described in the parent Specification may be included. The emulsifier may be calcium, magnesium, or aluminium oleate, sorbitan monolaurate or mono-oleate, ethylene oxide condensates of fatty acids, dodecylbenzene sulphonic acid, an alkylolamide, triethanolamine oleate, or the tall oil amide of tetraethylene penta-amine. The gas bubbles may be incorporated by injection or mechanical agitation, or by adding small hollow phenolformaldehyde or glass particles. In examples the nitrogen compound is monomethylamine nitrate or ethylenediamine dinitrate, the oxidizing salt is ammonium nitrate and sodium nitrate, and the fuel a mixture of paraffin and lubricating oil.
Patent GB-938604-A (GB)
Title: Vertical reheating furnace and a method of effecting scale-free heating of metallic articles therein
IPC: C21D1/767
Filed: 1961-06-12
Abstract: 938,604. Vertical reheating furnaces. ZAVODY V. I. LENINA PLZEN NARODNI PODNIK. June 12, 1961 [July 4, 1960], No. 21072/61. Class 51 (2). A vertical reheating furnace comprises superimposed heating rings with parabolic inner surfaces in which burner inlets and exhaust duct outlets are arranged tangentially to the surface. Between the heating rings 2 are ribbed rings 5 which contain inlets 6 for a protective gas containing a combustible component which is burnt on the external surface of the protecting layer of gas by the combustion products entering the treatment chamber 1 through the burners 3. The combustion products pass out through the exhaust ducts 4, 10 into a ceramic recuperator 8 through a space into which extra air is admitted through jets 11 to complete combustion, then through a metallic recuperator 9 and finally out via an exhaust duct. The protective gas is circulated through the cells of the recuperator 8, through duct 7 and into the furnace through the inlet 6. There is also a draught controller 12 and a watercooled sealing ring 13.
Patent GB-1115925-A (GB)
Title: Compositions comprising a polymeric material and a filler, and composite bodies made therefrom
IPC: B02C13/18
Filed: 1965-05-18
Abstract: A composition comprises particles of polymer which can be formed into a continuous phase coherent body and more than 25% by wt. of particles of a filler, having at least one dimension less than one micron, which are present in the composition as individual non-agglomerated particles, are adhered to the polymer particles and are uniformly distributed throughout the composition.  The polymer may be polyethylene (e.g. atactic or linear) or polypropylene (e.g. isotactic or atactic).  The filler may be asbestos or diatomaceous earth.  The composition may be formed by milling the polymer and filler particles in a rotary impact mill which is illustrated by 3 Figures (not shown).  In an example asbestos and polypropylene were mixed with sufficient trichlorethylene to gel the polypropylene at 200 DEG  F., the asbestos was dispersed in the gel and the trichlorethylene was the evaporated to leave a powder which was milled.  The composition may be formed into an integral body by moulding, casting, extruding, drawing or rolling.
Patent GB-1073971-A (GB)
Title: Iron base alloys
Inventor: JOMINY WALTER EDWIN
IPC: C22C38/26
Filed: 1964-05-21
Abstract: An iron base, austenitic casting alloy comprises:- <TABS:1073971/C6-C7/1> the balance, apart from impurities and incidental ingredients, being iron in an amount of at least 40%.  The Ni content is at least 2% when Mn is less than 1%, the Mn content is at least 2% when Ni is less than 2% and nitrogen is present, is at least 5% for Ni less than 2% with no nitrogen is present and at least 10% when there is no nickel or nitrogen present.  The alloying ingredients must be so chosen that the as-cast alloy has a 100 hour rupture strength at 1500 DEG F. of at least 20,000 p.s.i.  Incidental ingredients referred to are:-  .Ti.up to 5% .V.up to 5% .B.up to 1% .and P.up to 0.2%  Impurities referred to are residual deoxidizers Zr Al Mg and misch metal, and sulphur.  The cast alloys may be heat treated.