baber/WOPTO huggingface dataset:
Patent GB-1235353-A (GB)
Title: Improvements in or relating to longwall mineral mining installations
Inventor: LLOYD KENNETH THOMAS
IPC: E21C35/04
Filed: 1968-01-19
Abstract: 1,235,353. Mining installations. COAL INDUSTRY (PATENTS) Ltd. 14 Jan., 1969 [19 Jan., 1968], No. 3033/68. Heading E1F. A longwall mineral mining installation includes a mining machine mounted for reciprocal movement along a mineral face, and a buffer assembly having a first part attached to an abutment of the installation and a second part adapted to be contacted by the machine, when the latter is moving, to decelerate it at a predetermined rate. The machine is formed by a plough 2 loading a conveyor 3 driven by a motor 6, the plough being driven by motor 7 through an endless chain 8. The motors 6 and 7 may be duplicated at the other end of the conveyor 3. Self-advancing roof supports 10 and conveyor-advancing rams 11 are provided. The buffer assembly 13 is formed by a piston 14 and a cylinder 15 and a similar assembly may be disposed at the other end of the conveyor 3. The fluid from each cylinder 15 passes through a hydraulic yield valve or a variable orifice to a hydraulic accumulator 16, and a pressure responsive switch provided in the circuit is operable upon a predetermined pressure being reached to cause the plough motor 7 to be stopped. The switch may also cause sequence valves to operate the conveyor advancing rams 11, and cause the motor 7 to be reversed for return movement of the plough. The pressure responsive switch may be replaced by a switch actuated by movement of the piston 14.
Patent GB-351949-A (GB)
Title: Improvements in or relating to electric order telegraphs for use on ships
IPC: G08B9/06
Filed: 1930-01-29
Abstract: 351,949. Electric signalling systems. CHAPMAN, H. H., 233, Dover Road, Folkestone, and GATES, W. H., 197, Folkestone Road, Dover, both in Kent. Jan. 29, 1930, No. 3048. [Class 40 (i).] An order telegraph for use on ships comprises two lamps P, P<1>, Fig. 6, preferably arranged to illuminate differently coloured screens, and adapted to be controlled by a switch, Fig. 2, comprising a pivoted hand-lever B carrying contacts which co-operate respectively with pairs of contacts D<1>, D<2> ; H<1>, H2. One or other of the lamps is lighted when the hand-lever is operated into engagement with the appropriate contact D<1>, D<2>, a gong G, Fig. 6, being operated over contact H<1> or H<2> during movement. The gong may be operated by a .manual push-button switch E mounted on the side of the transmitter switch casing, Fig. 8. The casing has a hinged cover provided with a member KO adapted to lock the hand-lever in the neutral or inoperative position. The arrangement is such that the cover cannot be closed unless the lever is in its neutral position.
Patent GB-1420291-A (GB)
Title: Method of making vitreous carbon products
IPC: C04B35/524
Filed: 1974-01-23
Abstract: 1420291 Vitreous carbon articles V K BUTJUGIN A T VOROVIEV V S GRJUKAN A M SIGAREV V A STAROSTIN and V A FILIMONOV 23 Jan 1974 03072/74 Heading C1A [Also in Divisions B4-B5] A unitary vitreous carbon article having at least one outer surface of revolution is made by moulding one or more parts of the article from a thermosetting resin, joining the parts together with a final part by integrally moulding to these parts a final part from the resin by centrifugal casting, the final part having a surface of revolution, subjecting the product formed to polycondensation in air and heating it at 1000- 3000‹ C. The resin is preferably a phenolaldehyde, a furan, furyl or acenaphthene resin. The polycondensation is preferably effected while rotating the article continuously on rolls heated stepwise in 20 degree increments to 100-200‹ C., with a holding time of 1-2 hrs. at each step.
Patent GB-574916-A (GB)
Title: Improvements in or relating to marine gas turbine plants
IPC: F02C7/36
Filed: 1944-02-18
Abstract: 574,916. Gas turbines. STRUB, R. Feb. 18, 1944, No. 3101. [Class 110 (iii)] Starting means for a marine gas turbine plant is characterised by using most, or all, of the power from the useful output turbine 10 or turbines, to drive the compressor or compressors 1, 6, supplying the turbine 4 or turbines which normally drive the compressors. When the speed of the compressors rises, the output of the turbine 4 increases and that of the turbine 10 used for driving the compressor, is reduced. The change-over in drives is secured by disconnecting or connecting couplings 14, 12, which may be of any type. Between the shafts of the turbines 10, 4, a gear 11, which may have a variable speed ratio, can be interposed. In the example illustrated, the compressor 1 passes fluid through a heat-exchanger 2, heated by exhaust gases from the turbine 4, to a branch 20, where some fluid, preferably air, is burnt in a combustion chamber 3. The other part of the air is heated in an exchanger 3<1> and is led to the turbine 4. The air from the combustion chamber 3 passes to the turbine 10, the exhaust of which may be further utilised. The turbine 10 may be by-passed by using valves 15, 16. The compressor 6 supplies make-up air from the atmosphere to the plant through the exchanger 2. A motor 9 is used for the initial starting up of the plant, driving the shafts for turbines 4, 10, at low speed, the coupling 14 being connected and 12 disconnected. To reduce the power absorbed by the compressor 6, valves 7, 8, can be adjusted to allow air at low pressure to be circulated at first. Air is then supplied to the combustion chamber 3 and supplies the turbine 4. The motor 9 is then switched off. The propeller 13, or propellers, may have adjustable blades, to decrease the thrusts during starting up of the plant. During starting, the turbine 10 may drive one compressor only. The plant may operate on a completely closed circuit of the working- fluid, or alternatively a completely open circuit.
Patent GB-1217151-A (GB)
Title: Improvements in internal combustion engines
Inventor: MERCER AUSTIN CARTWRIGHT
IPC: F02B75/18
Filed: 1967-01-20
Abstract: 1,217,151. Two-stroke I.C. engines. MERCER ENG. CO. (BRADFORD) Ltd. Jan.15, 1968 [Jan.20, 1967], No.3118/67. Heading F1B. In a rotary I.C. engine having at least a pair of axially aligned cylinders and respective pistons 18 and 20, combustible mixture is drawn into the outer ends of the cylinders during inward movement of the pistons and transferred to the inner ends of the cylinders during outwards movement of the pistons through transfer passages 1 and 2 in the cylinder walls. Cam followers 26, 28, 30, 32 connected to the pistons co-operate with cam tracks 22, 24 having cam surfaces defined by two intersecting circles with inward projections at the intersections, Figs.2 to 4 (not shown). Further cam tracks may be provided inwardly of the tracks 22, 24 and spaced therefrom a distance slightly greater than the follower diameter for operation of the pistons at starting. The pistons 18 and 20 control transfer ports 54, 56, 58, an exhaust port 60 and inlet ports 84 and 86.
Patent GB-1537322-A (GB)
Title: Apparatus for recognition of approximate shape of an article
IPC: G06V10/40
Filed: 1976-01-27
Abstract: 1537322 Recognizing articles AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY IKEGAMI TSUSHINKI CO Ltd and HITACHI DENSHI KK 27 Jan 1976 [23 Jan 1975 30 Jan 1976] 03125/76 Heading G4R The approximate shape of an article is recognized by forming a projection of the article, determining the maximum width Ax, the maximum height Ay and the area A of the article, rotating the article a predetermined amount and repeating the procedure. At each angle a value S = A/Ax À Ay is determined. After the article has been rotated through 180 degrees the maximum and minimum values of S and the difference between the maximum and minimum values are used to produce a mean value S and and a difference value #S. These values are compared with values of predetermined shapes. The article is scanned with a television camera the output of which is digitized to produce a '0' when the article is not detected and a '1' when it is. The '1' signals in each line scan are used to pass clock signals through an AND gate 3 to a line counter which thus retains a value representing the height of the article. This value is fed to a comparator 7 which compares it with the value from the previous scan and stores the larger of the two values so that the maximum height value is stored in register 10. The count values from successive line scans are accumulated in register 9 which contains a value representing the area of the article. Counter 11 determines the number of scanning lines that contained a '1' and thus holds a value indicating the maximum height of the article. The value of S is determined, the article or camera is rotated and the process repeated. When all positions have been scanned S max and S min are obtained and S and #S are calculated. S may be (S max + S min)/2 and #S may be S max - S min or (S max - S min)/2 and the points obtained plotted on a graph having perpendicular axes #S and S. The values may be modified as shown in Fig. 11 where #St=##S<SP>0À9</SP> and St = α(S-0À5)<SP>1À5</SP> where α and # are constants. The distance of a point on the graph from points corresponding to predetermined articles determines its similarity. The graph of Fig. 11 gives similarities corresponding to those determined by observers rather than machines. On the graph the circles correspond to regular polygons having a number of sides as indicated by the value in the circle. The circle containing e is a circle. The circle containing d is a trapezoid having two equal sides with the ratio of parallel sides being 1 : 2. The image may be formed on a matrix of photocells which are used to determine Ax, Ay and A.
Patent GB-654411-A (GB)
Title: Improvements in or relating to jet propulsion units
IPC: F02K3/06
Filed: 1948-02-03
Abstract: 654,411. Jet propulsion plant. SOC. RATEAU, and ANXIONNAZ, R. Feb. 3, 1948, No. 3155. Convention date, Feb. 6, 1947. [Class 110(iii)] In a jet propulsion unit wherein a gas turbine drives two compressors a, k mechanically interconnected and arranged one behind the other on the same axis, the compressor k delivering air to the combustion chamber h supplying the turbine t, and the compressor a delivering dilution air which is mixed with the exhaust gases from the turbine, the delivery channels from the compressor a cross the suction channels of the compressor k, the channels being streamlined where they cross. The air inlet of the compressor a is near the common axis while the air inlet of the compressor k is arranged outside the compressor a. The compressors may be centrifugal, axial-flow or centrifugal-helical type.
Patent GB-1042784-A (GB)
Title: New and improved process for the production of organopolysiloxanes
Inventor: GALLAGHER JAMES JOSEPH
IPC: C08G77/12
Filed: 1964-01-24
Abstract: Alkyl or substituted alkylpolysiloxanes containing Si-bonded H atoms are made by reacting together (1) a dialkyl or di-substituted alkyl polysiloxane, (2) a hexa-alkyl- or bisdialkylhydrogen-disiloxane and (3) an organopolysiloxane of average mol. weight up to 5000 and containing Si-bonded H atoms, in the presence of ferrous, ferric, cuprous or cupric sulphate. Substituted alkyl groups specified are aminopropyl groups.  The sulphate is used in amount of 0.25 to 10% by weight of the reaction mixture, and the reaction is effected at 15 DEG  to 150 DEG  C. In a typical Example (1) hexamethyldisiloxane, octamethylcyclotetrasiloxane and trimethylsilyl-terminated methylhydrogenpolysiloxane were mixed with FeSO4 and the resulting mixture was heated at 111 DEG C. for 2 1/4 hours to yield the desired polymer.
Patent GB-746691-A (GB)
Title: Portable optical projection apparatus for diapositives and microfilms
IPC: G03B21/11
Filed: 1954-02-03
Abstract: 746,691. Optical-projection apparatus. SOC. ANON. APPARECCHI FOTOGRAFICI FERRANIA. Feb. 3, 1954 [April 11, 1953], No. 3260/54. Class 97 (1). Portable projection apparatus comprises a casing 1 in which the projector proper, 7, may be pivoted about an axis 6 from the inoperative position shown dotted to the operative inclined position shown for projection from a mirror 12 on to a screen 13 inside the lid 2 when the lid is opened as shown. Preferably two sets of hinges 3, 4 permit the lid to be opened to the position shown dotted for projection on to a separate screen.
Patent GB-909918-A (GB)
Title: Improvements relating to the use of superconducting material
Inventor: SCHMITT ROLAND WALTER
IPC: G11C11/44
Filed: 1959-01-29
Abstract: 909,918. Superconductor circuits. GENERAL ELECTRIC CO. Jan. 29, 1959, No. 3260/59. Class 40 (9). [Also in Group XXXVI] The parameters of a cryotron circuit are selected and the cryotron so designed that the curve relating the gate resistance to the magnetic field exhibits a hysteresis loop. Suitable cryotrons of specified dimensions (see Group XXXVI) consist of a niobium wire gate bifilarly wound on a glass cylinder concentrically arranged in a glass cylinder carrying a tantalum or copper control winding, or a niobium gate bifilarly wound on a flat mica former inserted in a similar cylindrical control winding so that the control field is parallel to the current in the gate. A cryotron of the first type, in which the gate is at the transition temperature, is used in the Fig. 10 circuit which operates as an amplifier, frequency doubler or square-wave generator according to the amplitude of the sinusoidal input signal supplied to the control coil of cryotron 20. Using the specified component values, a gate current of 1.05 mA. and a constant amplitude input signal the frequency-gain characteristic shown in Fig. 11 is obtained. The output waveforms illustrated in Fig. 12 are produced from a 40-cycle input signal, the distortion increasing progressively as shown as the input amplitude rises. The cryotron may include a feedback coil in series with the gate. A pulse amplification circuit, shown in Fig. 14, uses a cryotron of the second type, the circuit parameters being selected so that in the absence of a pulse the gate is just in the superconductive state. On receipt of a pulse of sufficient amplitude the gate is driven normally conductive. This causes an amplified pulse to be delivered at output transformer 31 and drastically reduces the voltage across R 1  fed back to the control coil to reset the gate in the superconductive state. A memory circuit operating like a thyratron switch is shown in Fig. 15, in which the circuit parameters are chosen so that the current supplied to feedback coil 9<SP>111</SP> is slightly less than that required, in the absence of an input signal, to switch gate 8<SP>1</SP> to the normally resistive state but sufficient to maintain the resistive condition in the gate once established. When an input signal is fed to control coil 91 the gate is switched to the normally resistive state and held there by the feedback. The circuit is reset by applying a sufficiently large signal of opposite polarity to the coil 91. In another memory circuit using a cryotron of the first type the gate current can be set at such a value that once the resistive state has been established by an input pulse it cannot be destroyed by reduction of the magnetic field. The circuit is in this case reset either by momentarily lowering the temperature or by reducing the gate current a predetermined amount.
Patent GB-310572-A (GB)
Title: Improved heat insulating process, devices and materials
IPC: F16L59/08
Filed: 1928-02-02
Abstract: 310,572. Schmidt, E., and Dyckerhoff, E. Feb. 2,1928. Addition to 266,177. Nonconducting coverings for heat.-The heat insulation described in the parent Specification, according to which layers of air or air spaces are bounded by sheets of bright metal foil, is modified by replacing the metal foil with a suitable material such as paper, cardboard, cork, asbestos, or peat, having a thin bright metallic coating, which may be applied by electrolysis or by spraying, or as a metallic lacquer.
Patent GB-1076390-A (GB)
Title: Dual motion surface dressing machine
IPC: B24B23/04
Filed: 1965-12-30
Abstract: 1,076,390. Grinding. PORTABLE ELECTRIC TOOLS Inc. Dec. 30, 1965 [Jan. 11, 1965], No. 3342/67. Divided out of 1,076,389. Heading B3D. The subject matter of this Specification is substantially identical with that of Specification 1,076,389 but the claims are directed to a surface-dressing machine comprising a housing, a surface-dressing member, driving means carried by the housing for orbitally driving a pin carried by the housing, a channel member mounted on the surface-dressing member generally transverse to the longitudinal axis of the surface dressing member, a lever pivotally mounted in the channel member, an actuator movably mounted on the housing in position to be engaged by one end portion of the lever so as to move the lever between two predetermined positions, surface means formed on the other end of the lever, a block movably positioned in the channel member and engaged by the pin, and coacting means in the lower surface portion of the block in engagement with the surface means whereby in the first position of the lever, the surface means and coacting means are locked together so that the block and surface-dressing member move together with the same orbital movement as the pin, and in the second position of the lever, the surface means permits the coacting means and the block to slide relatively to the channel member whereby orbital movement of the pin will impart reciprocating movement to the surface-dressing member.
Patent GB-1129785-A (GB)
Title: A method of producing fodder for domestic animals
Inventor: JOHANSON JAMES GUSTAF FERDINAN
IPC: A23K10/28
Filed: 1967-01-23
Abstract: 1,129,785. Animal foods. OSKAR JOHANSONS SLAKTERIAKTIEBOLAG. 23 Jan., 1967, No. 3358/67. Heading A2B. A food for domestic animals such as pigs and young cattle, comprising coarser components such as corn, green fodder, ensilage, and potatoes, and finer components such as finely ground edible material salts, vitamins, and antibiotics, is prepared by disintegrating the coarser components, and suspending said disintegrated material in water and/or an emulsified liquid such as whey or skimmed milk, either before, during, or after adding the fine components, the suspension being so effected that a milky product is obtained. This product may be spray-dried to a powder which may be stored until required for use, being then reconstituted by suspending in water, whey, or other suitable liquid.
Patent GB-477938-A (GB)
Title: Process for the production of alkylamines
Filed: 1937-02-04
Abstract: Alkylamines are prepared by reacting an alkanol having not more than 6 carbon atoms with an ammonium halide in the presence of water and a halide of chromium, manganese, iron, cobalt, nickel or copper.  The reaction may be effected in an autoclave above 200 and up to 400, preferably at 250--350 DEG  C.  Proportions are varied according to whether a primary, secondary or tertiary amine is desired.  The metal halide may comprise, e.g. \ba1/10\be--15 per cent by weight of the total mixture.  The product is usually a mixture of primary, secondary, and tertiary amines in the form of their hydrohalides.  In preparing dimethylamine, the yield is increased if the mono- and tri-methylamines of a preceding batch are added.  In examples: (1) methanol, ammonium chloride, water, ferric chloride, and hydrochlorides of mono- and tri-methylamines from a previous run are autoclaved at 290--300 DEG  C. for 1--2 hrs. to give dimethylamine; (2) ethanol similarly yields diethylamine, heating for 2 hrs. at 275--280 DEG  C. being employed.  Excess alkali is added to salt out the free amine.  The monoalkylamines are produced similarly by varying the proportions of alcohol to ammonium chloride.
Patent GB-104230-A (GB)
Title: Improvements in and relating to Vacuum Apparatus.
IPC: H01J35/20
Filed: 1916-03-07
Abstract: 104,230. British Thomson - Houston Co., (General Electric Co.). March 7, 1916. High vacua in bulbs, obtaining and maintaining. - In a vacuous receptacle, such as Rontgen-ray tube, operating with a substantially pure electron discharge independently of gas ionization as described in Specification 14892/13, [Class 39 (i), Electric lamps, Arc. &c.], the necessary high vacuum is maintained by automatically disintegrating or sputtering electrically a metal within the receptacle in response to positive ionization of gas evolved during operation from parts of the apparatus. The. initial vacuum is created by subjecting the receptacle to an exhaust to such a degree that a discharge occurs with difficulty from an unheated cathode, and then sealing the vessel and impressing on the electrodes, while the cathode is heated, a high-potential current which disintegrates suitable metal, such as copper, silver, or gold, forming part of one at least of the electrodes. In the R÷ntgen-ray device shown, the cathode 2, Fig. 1, comprises a spiral filament 4, Fig. 3, of tungsten connected at one end to a tungsten wire 6 and with its other end welded at a suitable position inside a tube 5 of molybdenum or other refractory metal, to which is connected a tungsten wire 7. The wires 6, 7 are sealed into a glass stem 9 and are connected to a battery 20 to heat the filament 4 to incandescence. A ring 11 of the metal readily disintegrated electrically is secured to a molybdenum flange 10 on the tube 5. The anode 3 comprises a target 13 of tungsten, a copper or like metal tube 12, and an iron tube 14 sealed into the arm of the bulb, a glass ring 16 serving to centre and support the iron tube. Water or other cooling-fluid is introduced through a supply tube 17 and conducted away through a connexion-box 19 and a discharge tube 18. The main operating-current is supplied from a high-potential source, such as a transformer 21 connected by conductors 22, 23 to the terminals of the tube. When an alternating current is used, the cathode may consist entirely of refractory metal; the target 13, when negative in potential, will attract positive ions of any gas evolved and ionized by the discharge, and some of the copper &c. will be disintegrated and will precipitate or fix the ionized gas, thus restoring the high vacuum; preferably, however, both anode and cathode comprise metal readily disintegrated electrically. When the cathode comprises the ring 11, the same effect will be produced with direct current, since positive ions will be attracted to the negative terminal and disintegrate some of the metal of the ring 11. The last stages of the initial exhaust are preferably completed by a Gaode molecular pump or other exhausting-device capable of producing a vacuum below about 0.00005 mm. of mercury, the tube being operated during the last stages until the anode is heated to a justvisible dull redness before the tube is sealed off.
Patent GB-951802-A (GB)
Title: Improvements in and relating to neutral conductor terminal units and terminal blocks
IPC: H01R9/26
Filed: 1961-01-30
Abstract: 951,802. Distribution boards; switches held set and freed mechanically; mechanical switches, without quick action. G. GLASEL. Jan. 30, 1961 [March 7, 1960], No. 3403/61. Headings H2B and H2E. A disconnectible neutral conductor terminal block comprises a neutral bar 3 supported on a base 1 and on to which are threaded or snapped individual terminal carriers 6, each comprising an insulating body having a terminal connector 11, Fig. 2, adapted at one end to receive a neutral lead, which is clamped by a screw 12, and having at the other end a disconnecting screw 14 which when tightened presses a spring blade 15 on to the bar 3 to connect the lead to the bar and when unscrewed breaks such connection. The body shown is threaded on the bar but may have an opening at the bottom containing a spring blade, which may bo integral -with blade 15, whereby the body may be snapped on to the bar (Fig. 3, not shown). Blade 15 may be omitted and a pressure member on screw 14 screwed down on to the bar 3 directly (Fig. 4, not shown).