baber/WOPTO huggingface dataset:
Patent GB-836058-A (GB)
Title: Improvements in flame spreading devices for combustion systems
Inventor: SALMON BENJAMIN JEAN MARCEL
IPC: F23R3/24
Filed: 1957-07-01
Abstract: 836,058. Generating combustion products under pressure. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. July 1, 1957 [July 13, 1956], No. 20712/57. Addition to 761,167. Class 51(1). The apparatus of the parent Specification is modified in that the nozzles or like orifices from which the jets of air or other gas under pressure are discharged are provided on a hollow body positioned in substantial alignment with the flame stabilizer and downstream thereof in such a way that the projection of its contour on to a plane perpendicular to the direction of flow of the gaseous stream is not greater than the projection on to this plane of the contour of the flame stabilizer. The combustion equipment in Fig. 1 is a reheat combustion chamber of a gas turbine jet propulsion engine and comprises fuel injectors 1, a flame stabilizer 5 and a device for promoting spreading of the flame comprising a hollow body 31 disposed on the axis A-A of the chamber downstream of the baffle 5. Air under pressure supplied to the hollow body 31 issues therefrom through nozzles 32 as jets f1 which are directed so as to impinge on the flame front 33 in a tangential direction. In Fig. 2 the conical flame stabilizing baffle 5 of Fig. 1 is replaced by a gaseous baffle constituted by jets of air under pressure issuing through nozzles 5a in the hollow body 5b. The flame-spreading device is similar to that shown in Fig. 1. The flame-stabilizing and flamespreading devices 5b and 31 are both supplied with air under pressure from a common source through the ducts 36. In another embodiment, the flame stabilizing device is a ring of V-section pointing upstream and the flame-spreading device is a hollow annular body of the same diameter as the flame-stabilizing ring, the whole of the fuel in this embodiment being supplied to the air before discharge from the flamespreading device. The flame fronts in this embodiment comprise two frusto-conical surfaces disposed radially within and outside the annular-shaped flame-spreading device. In a further embodiment also similar to Fig. 1, additional fuel is supplied through an injector disposed within the flame-stabilizing baffle 5. The hollow body provided with nozzles may be in the form of radial arms in which case the flame stabilizer is of corresponding shape and cross-section.
Patent GB-723826-A (GB)
Title: Improvements relating to electrical controlling apparatus
Inventor: BOUNDY JAMES REILLY
IPC: G05B11/01
Filed: 1952-08-18
Abstract: 723,826. Automatic control systems. EVERSHED & VIGNOLES, Ltd. Aug. 7, 1953 [Aug. 18, 1952], No. 20730/52. Drawings to Specification. Class 38 (4). In an automatic electric-control system a constant current reference source comprises a potentiometer across a neon tube. The invention is described with reference to the liquidlevel control system of Specification 704,885 wherein a current proportional to the liquid level is compared in a two-coil galvanometerrelay with a constant reference current which was previously provided by an automatic regulating system comprising a galvanometer relay in the cathode circuit of a valve retroacting on photo-cells in the grid circuit. Specification 688,464 also is referred to.
Patent GB-987110-A (GB)
Title: Electric signal transmission networks
IPC: H04B3/12
Filed: 1961-06-08
Abstract: 987,110. Filter networks; repeater identification. WESTERN ELECTRIC CO. Inc. June 8, 1961 [June 13, 1960], No. 20733/61. Headings H3U and H4R. The effect of an undesired resonant condition of a piezoelectric or similar resonator connected in the shunt branch of a network is reduced by means of a resistor connected in parallel with a reactive element in the series branch, and having a resistance which is much smaller than the reactance of the element. The invention may be applied to a submarine repeater such as is described in Specification 702,397, comprising an amplifier 21 the feed-back path 22 of which is shunted by a so-called " signature " crystal 28 having a main, e.g. thickness-shear mode, resonance outside the information band. Such a crystal may resonate in another mode, e.g. a face-shear mode, at a frequency f 2  within the information band and cause a disturbance in the gain characteristic of the amplifier as shown by curve 1, Fig. 3. The value of capacitance 29 is chosen to give a low impedance coupling to the crystal 28 at the signature frequency. The Specification gives an analysis of the network 27 in terms of the equivalent circuit of Fig. 2A and it is shown that, in the absence of resistor 30, the transmission M is approximately given by:- at frequencies removed from the secondary resonance frequency # 0  of the crystal. In the equation, X 0  denotes the reactance of capacitor 29 and # d  denotes the frequency deviation from # 0 . It is assumed that the crystal resistance r is negligible at frequencies off resonance. It is apparent that the transmission M converges towards unity as a function of the first power of # d  (see curve 1). If the resistor 30 is connected in circuit, the equation becomes from which, by taking magnitudes and approximating, is obtained:- Thus, with the compensating resistance, the transmission converges to unity as function of the square of # d  and has a maximum value in the region of f 2  of R 30 . Furthermore, the gain characteristic curve (curve 2) has no negative excursion. The discontinuities apparent in the two equations are not shown on the curves which take r, the crystal resistance, into account.
Patent GB-662647-A (GB)
Title: Improvements in and relating to sewage treatment
IPC: C02F3/28
Filed: 1948-08-06
Abstract: 662,647. Sewage treatment. GRIFFIN, J D. Aug. 6, 1948 [Aug. 15, 1947], No. 20787/48. Class 111 Sewage having a solid constituent and a watery constituent much in excess of the solid constituent is fed to the bottom of a tank 2 as by conduit 3 thereby causing an upward flow through the tank which flow is so ccntrolled, as by valve 4, that the solid part slows down relatively to the liquid, and forms in the tank a body of retained sludge which is treated by means of bacterial action while it is being displaced from below by the sludge of the incoming sewage and through all of which the water constituent flows upwardly and so washes the sludge and maintains the bacteria in an active state. The constituents may be progressively withdrawn from the upper portion of the tank together as through the overflow trough 11 and pipe 10, or the sludge may be removed from the top of the sludge body as through the channel 7 and pipe 8 below the liquid overflow trough 11 and pipe 10. The flow of the sludge should be such that it remains in the tank for a sufficient period to bring about the digestion. The sludge and liquid withdrawn together as through the pipe 10 may be subjected to aerobic treatment in which case it is fed, as through a valve 17, Fig. 4, to a sludge drying bed 18a and the drainage from the bed is fed by pipe 16 to an enforced ventilation biological filter 18. Purified effluent from the filter 18 may be recirculated through the retained sludge in the tank 2 as by pipe 21 feeding effluent from the filter to sewage entering the tank. In an alternative form of tank 2 the top converges towards the outlet for the liquid and the sludge outlet may be located at the commencement of the converging portion. Any detritus settling at the bottom of the tank 2 may be withdrawn as by pipe 23.
Patent GB-911577-A (GB)
Title: Improvements in electronic logical circuits
IPC: H03K19/084
Filed: 1960-06-14
Abstract: 911,577. Circuits employing bi-stable magnetic elements. ELDRIDGE, D., PROUDMAN, A., and AYLING, J. K. June 12, 1961 [June 14, 1960], No. 20800/60. Class 40 (9). A bi-stable magnetic core 1 with output windings 2 is held in one stable state by current through a reset winding 4, except when this current is reduced by switching on a transistor 5, a set winding 3 being then able to switch the core to the other stable state for the conductive period of the transistor. The set winding energization is sufficient to completely reverse the core magnetization when the transistor is conductive, but the reset winding energization when the transistor is switched off is only sufficient to reset the flux to an intermediate value before the transistor is reactivated. Consequently, since the transistor is prepared for operation by clock pulses at terminal 7 and operates if the inputs at terminals 6 are negative or zero, a complete flux resetting operation does not occur until an operative transistor period is reached in which switching on of the transistor is prevented. This occurs when an inhibiting positive input is applied. The D.C. setting current applied to winding 3 may be continuous, or alternatively the winding may be connected in series with the transistor collector electrode. The circuit may include a capacitor to slightly delay the setting period.
Patent GB-224017-A (GB)
Title: A new or improved safety guard for use on motor and other vehicles
IPC: B60R21/34
Filed: 1923-08-17
Abstract: 224,017. Bradley, T., and Bradley, M. Aug. 17, 1923. Obstruction -removers and safety appliances.- A safety guard comprises a roller adapted to be pressed back on to the front wheels when meeting an obstruction, in combination with a mat which is adapted to be thrown forward in front of the vehicle simultaneously with the rearward movement of the roller. The roller A is hinged by a bar B to a, support C attached to each stub axle.. To each hinge pin is attached an arm G, the upper ends of which carry the mat F supported, in the rolled condition, on pegs projecting from the arms. Projections g on the lower ends of the arms bear against extensions of the arm B so that in the raised position of the mat the projections g bear on the extensions of the arms B and maintain the roller A away from the road wheel. On contact with a pedestrian &c., the roller A is forced into contact with the road wheels and the arms G and mat F thrown forward as shown in dotted line. In this position the projections g bear on the arm B on the opposite side of the hinge pin and maintain the roller in contact with the road wheels. The arms G may be maintained in the raised position by a spring clip and the arms G may be made of telescopic tubes containing a spring arranged so that the arms extend when operated. When applied to a tram an additional road wheel is used with which the roller A is in permanent contact, the road wheel being adapted to make contact with the rails and the mat thrown forward on meeting with an obstruction.
Patent GB-200715-A (GB)
Title: Improvements in gas nozzle regulators
IPC: F23D14/48
Filed: 1922-07-31
Abstract: 200,715. Reiss, C., and New Inverted Incandescent Gas Lamp Co., Ltd. July 31, 1922. Atmospheric gas burmers.-In a gas-nozzle regulator, particularly for incandescent gas burners, in which a member b carrying a needle valve d is slidably mounted in a casing a and adjusted by means of an eccentric pin f, or a disc g on a spindle h, mounted in a sleeve i and provided with an operating-disc k, a helical or coiled spring m being provided between the end of the sleeve i and the disc k to prevent escape of gas, the spring m is formed with flat ends contained in planes about perpendicular to the axis of the spring. The spring may be formed from flat steel strip, as shown in Fig. 3, and may be enclosed in a casing n, which may contain lubricant.
Patent GB-1068095-A (GB)
Title: Improvements in or relating to the manufacture of heat exchanger elements
IPC: F28F3/02
Filed: 1964-05-20
Abstract: 1,068,095. Making heat exchangers; corrugating. SOC. ANON. DES USINES CHAUSSON. May 20, 1964 [May 28, 1963], No. 20910/64. Headings B3A and B3E. [Also in Division F4] A method of making a heat exchanger element comprises corrugating two metallic strips 1, 1a and then superimposing them so that the corrugations of the strips bear on one another over substantially the whole surface thereof. The corrugated strips may have openings 5 and associated wedges 6 formed therein or alternatively openings with wedges 6 1  and the wedges of one corrugation fit into or are aligned with an opening in an adjacent corrugation. The heat-conducting properties of the strip may be varied by altering the pitch of the corrugations by compression thereof. The corrugated strip may be fixed to a transistor support (7) (Fig. 7, not shown) or it may be wrapped around a lamp (Fig. 10, not shown). In the latter case, the wedges 6 1  are preferably used to keep the heat exchanger element in resilient contact with the lamp. The corrugated strip may also be formed into a cylinder, which is flattened by opening out one end radially, and the annular disc so formed also serves as a transistor support (Fig. 11, not shown).
Patent GB-427716-A (GB)
Title: Improvements in projectile fuses
IPC: F42C9/14
Filed: 1933-07-27
Abstract: 427,716. Projectile fuzes. SCELZO, L., 74, Via Crescenzio, and VITELLI, S., 8, Via Adige, both in Rome. July 27, 1933, No. 21186. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 29, 1934]. [Class 9 (i)] A combined time and percussion fuze comprises a central direct impact striker 2 of electron metal fitted with a firing-pin 3 and arranged in the fuze body 1 behind a covering membrane 4, a transverse centrifugal bolt 6 for locking the striker and itself locked by an inertia plug 7 held up by a spring 8, a time ring 13 fired by a percussion cap 12 struck by a laterally disposed inertia hammer 9 which pierces a safety disc 10, and a detonator 15 fired by the percussion fuze or the time fuze, whichever acts first.
Patent GB-499805-A (GB)
Title: Improvements in or relating to electric insulators
IPC: H01B17/50
Filed: 1937-07-30
Abstract: 499,805. Insulators. RICHARDS, C. W., SNOW, C. I., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 30, 1937, No. 21230. [Class 36] To increase the surface resistance under wet or moist conditions of a ceramic insulator an insulating coating or belt having as its mayor constituent a solid chlorinated naphthalene is applied to the insulator, the coating being reinforced with fibrous material which has preferably been previously impregnated with insulating material used for forming the coating. The fibrous material may be applied as a string or fabric wrapping directly upon the insulator, the coating being applied on the wrapping. Alternatively, the wrapping may be applied between two superimposed coatings of the insulating material, the coatings preferably being of different hardness as described in Specification 497,262. In a modified construction the reinforcement is in the form of loose fibres suspended in the insulating material. The hardness of the coating may be increased by incorporating in the chlorinated naphthalene a small proportion of powdered asbestos, magnesium oxide, silica or mica. Specification 438,807 also is referred to.
Patent GB-305000-A (GB)
Title: Improvements in hydraulic variable speed transmission gearing
IPC: F16D31/04
Filed: 1928-07-23
Abstract: 305,000. Murray, L. K. July 23, 1928. Clutches 20 and two gear-wheel mechanism.-The to casings 20 of two gear-wheel pumps are fixed to the opposite ends of a drum 15 in diametrically opposite positions, and the outlet pipes 29 of the pumps are controlled by a valve 31 operated from a slidable sleeve 45.
Patent GB-741819-A (GB)
Title: Improvements in or relating to firearms
Inventor: PERRY CLAUDE ALFRED
IPC: F41A19/17
Filed: 1952-08-26
Abstract: 741,819. Trigger mechanisms for firearms. BIRMINGHAM SMALL ARMS CO., Ltd. Aug. 26, 1953 [Aug. 26, 1952], No. 21373/52. Class 119 In a, Martini-type action firearm with a pivoted breech block 27 Fig. 1 in which the firing pin 23 is mounted and held in the cocked position by a tumbler 2, the trigger bent 8 engaged by the trigger sear 7 is relieved of the pressure exerted by the firing pin spring 24 acting through the tumbler 2 by a pivoted spring - loaded sear member 3 which engages the tumbler 2, the sear member 3, on firing, being moved out of engagement with the tumbler 2 by a pivoted spring - loaded member 10 carrying. the trigger bent 8. The tumbler sear 3a and the trigger sear 7 are maintained in engagement respectively with the tumbler bent 2a and trigger bent 8 by a torsion spring 11 common to sear member 3 and trigger bent member 10. A light coil spring 16 adjustable by a screw 19 Fig. 4 is disposed within the trigger guard 17 and assists in maintaining the sear 7 and trigger bent 8 in engagement. A screw 21 also located in the triggerguard serves as a trigger stop. By a very small movement of the trigger 5, the sear 7 releases the trigger bent member 10, which, under the action of the spring 11, swings clockwise and its arm 9 strikes the extending arm 22 of the sear member 3 to cause the sear 3a to release the tumbler 2 and firing pin 23. On re-cocking by the cocking lever 33, the lower face 25 of the downwardly moving breech block 27 strikes the arm 29 of the trigger bent member 10 moving it anti-clockwise against the spring 11 and permitting re-engagement of the trigger sear 7. Simultaneously a cam face 30 on the end of the tumbler 2 moves the sear member 3 in an anti-clockwise direction and permits re-engagement of the tumbler therewith.
Patent GB-1279411-A (GB)
Title: Improvements in or relating to machine tools
Inventor: GRIFFITHS ROBERT GORDON
IPC: B23Q17/22
Filed: 1968-05-06
Abstract: 1279411 Boring bars; gauging MASSEY FERGUSON PERKINS Ltd 5 May 1969 [6 May 1968] 21414/68 Headings B3B B3C and B3T [Also in Division G1] Apparatus for measuring the wear of a workengaging tool-bit 13 of a machine-tool comprises a transducer 16 of which the inductance varies as its spacing, A, from a metallic workpiece 14. The transducer is calibrated using two plug gauges which define maximum and minimum bore sizes. A machine tool including the transducer has warning lamps which indicate maximum bore size, minimum bore size or 80% tool wear and means to stop the machine when the minimum bore size is achieved. Fig. 8 illustrates a machine tool with two transducers 60, 61 diametrically opposed on a boring bar (21), the signals from which transducers are combined to measure workpiece bore-size. Fig. 9 (not shown) illustrates a machine tool, having a roughing bit (81A) and a finishing bit (82A) on separate boring bars, which is applied to a workpiece (86) having three apertures (86A- 86C) to be enlarged, the transducer (81B) being disposed within the machined aperture (86A) while the aperture (86B) is being machined and so on, so that the amount of swarf around the transducer is reduced. Figs. 10 and 11 (not shown) illustrate a boring bar (90) having two diametrically opposed and axially-spaced tool bits (91, 92) and a passageway (93) which conveys air to the transducers (94, 95) to remove swarf. It is stated that the apparatus may be used on lathe or on a milling, or a grinding machine.
Patent GB-705316-A (GB)
Title: Improvements in or relating to the production of coumarins
IPC: C07D311/46
Filed: 1951-09-12
Abstract: 4-Hydroxy coumarins are prepared by heating an ortho-hydroxy lower alkyl phenyl ketone, particularly ortho-hydroxy acetophenone with an organic carbonate of general formula CO (OR)2, in which R is an alkyl group of not more than four carbon atoms or an aralkyl group of not more than eleven carbon atoms, particularly diethyl carbonate, the reaction being conducted in the presence of an alkali metal hydride, especially sodium hydride.  Excess of the di-lower alkyl carbonate or a hydrocarbon of b.p >100 DEG C. such as toluene, mesitylene, n-octane or n-decane is used as a solvent, and the hydroxy coumarin is isolated by acidification of the reaction mixture.  In example (1) ortho hydroxy-acetophenone and diethyl carbonate are added to a heated, stirred suspension of sodium hydride in diethyl carbonate, when the ethanol formed distils out.  The remaining slurry is treated with water, the aqueous layer separated and acidified when 4-hydroxy coumarin is precipitated. (2) The first example is repeated, but toluene is used as the solvent for the reaction.
Patent GB-315371-A (GB)
Title: Improvements in and relating to means for preventing the longitudinal axis of steam turbine casings from being thrown out of alignment by expansion
IPC: F01D25/28
Filed: 1929-07-12
Abstract: 315,371. International General Electric Co., Inc., (Assignees of Allgemeine Electricitõts-Ges.). July 12, 1928, [Convention date]. Mounting and supporting.-The lower section a of a turbine casing has offset brackets d which bear upon the bearing blocks e, f, the bearing faces g being in the central horizontal plane of the casing so as to prevent distortion due to expansion. Keys h may allow lateral expansion, ane one bearing may be free to permit longitudinal expansion. Specification 228,172 is referred to.
Patent GB-928224-A (GB)
Title: Improvements in or relating to belt or like endless conveyors
IPC: B65G39/14
Filed: 1959-06-23
Abstract: 928,224. Troughing roller assemblies for belt conveyers. GOODMAN MANUFACTURING CO. June 23, 1959 [June 23, 1958], No. 21505/59. Class 78 (1). A flexible troughing roller assembly for belt and like endless conveyers comprises a central roller 30, inclined wing rollers 34, and pivotal connections 60 between the wing rollers and the central roller each of which comprises a pair of arms 63 secured to the end of the central roller shaft 55 and each of which embraces an arm 64 secured to the adjacent wing roller shaft 54, the arms 63, 64 being pivotally connected by a pin 67. The outer ends of the wing roller shafts are adapted to be suspended from a pair of longitudinally extending flexible cables 26, 28 by hangers 42 each connected to the shaft 54 by a swivel link 43 and having a clamping screw 44 for attachment to the cable. The cables are supported at intervals on stands each comprising uprights 10 composed of telescoping tubular members 14, 16, for height adjustment, and a transverse connecting member 18 provided with supports 23 for a return idler roller 22.
Patent GB-1361582-A (GB)
Title: Linear actuator assembly
IPC: E05B65/12
Filed: 1972-05-10
Abstract: 1361582 Screw and nut gearing MeCORD CORP 10 May 1972 [16 Aug 1971] 21824/72 Heading F2Q In an arrangement wherein a screw-threaded shaft 14 is moved axially up or down (as viewed in Fig. 4) on rotation of a shaft 24 of an electric motor 22 in one direction or the other respectively, but is free to be moved manually when the motor is stopped, arms 50, 48, swung by centrifugal force, having weights 66 at their ends and pivoted to a rotatable member 32 splined to the shaft 24 each carry a half nut 44 and a half nut 46 on a V-shaped portion 54, 56 respectively, nuts 44 engaging the shaft 14 when the motor is rotated one way to swing the arms 48, 50 in one direction and so move shaft 14 downwards) the condition shown), the other half nuts, 46, engaging shaft 14 to screw it upwards when the motor rotates in the opposite direction (and consequently the arms swing the other way). With the motor 22 stopped the arms 48, 50 hang vertically, with neither pair of half nuts engaging the screw-thread 26 on shaft 14. Portions 28 and 30 of shaft 14 limit the axial movement thereof. The invention is described in relation to the remote operation of safety catches in car doors.
Patent GB-247850-A (GB)
Title: Improvements in or relating to boot and shoe heels
IPC: A43B21/38
Filed: 1925-09-01
Abstract: 247,850. Buckland, V. Sept. 1, 1925. Protectors, construction of; protectors, securing.- A removable heel piece or tip for boot and shoe heels consists of two or more layers a, b secured together by independent rivets c and shaped to the contour of the heel, the said heel piece being without an aperture in any layer other than holes such as e for a fastening screw or screws d and nails f which prevent turning of the heel piece. The outer layer a may be of leather and the inner layer of metal, or two layers of leather or equivalent material may be used. Screws may replace nails or vice versa. Reference has been directed by the Comptroller to Specifications 25185/01, 14571/04, and 207,765.