baber/WOPTO huggingface dataset:
Patent GB-1100263-A (GB)
Title: Improvements in or relating to alarm systems for flame monitoring
Inventor: TOMLINSON LEONARD VICTOR
IPC: F23N5/08
Filed: 1963-08-21
Abstract: 1,100,263. Temperature alarm systems. POWER-GAS CORPORATION Ltd. 14 Aug., 1964 [21 Aug., 1963], No. 33026/63. Heading G4N. [Also in Division G1] An alarm device for monitoring a flame in, for example, a furnace comprises a flame sensor for providing an electrical signal containing a fluctuating component representing flame flicker, a transistor amplifier for amplifying the signal and at least one transistor static switch responsive to the amplifier output to actuate audible and/or visual alarm means in response to the disappearance of the amplifier output (i.e. of the flame). A number of such devices may be used together in a system to monitor different flames in a furnace. In one device (Fig. 1, in which unconventional base bias circuit is not shown) the sensor is a photo-conductor element R s . Alternatively, a photovoltaic cell (Fig. 2, not shown) or a probe element in direct contact with the flame (Fig. 3, not shown), is used. The detector R s  receives radiation focused on to it from the flame by a lens system L and the resulting variations in its resistance are transmitted as a small varying current to transistor T 1 . The D.C. component of the amplified signal is filtered by network C 1 , C 2  and R 2  leaving an A.C. signal dependent on the flame flicker. As a result the transistor T 2  acts as a static switch in the " off " position due to the reverse biasing effect of the positive half cycles of this signal. When the flame is extinguished, the transistor T 2  conducts and the lamp S lights. In an alternative arrangement using a photo voltaic cell (Fig. 5, not shown), the filter circuit comprises a capacitance and a diode. In a system in which three separate flames are investigated (Fig. 4, not shown) three devices, as in Fig. 1 or 5, are used together with corresponding transistor switch arrangements (2T, 3T, 5T) and common switch (4T). On the initial extinction of any one flame (I), a signal is obtained from the switch (1T), resulting in the horn (H) sounding and the flasher unit (K) being actuated. Further, another switch (3T) is switched on, but the intermittent blocking signal from (K) causes the lamp (S) to flash. Depression of the required button (B) cuts off the flasher unit and horn and a steady glow from the signal lamp (S) is obtained.
Patent GB-481821-A (GB)
Title: Improvements in or relating to cinematograph projectors
IPC: G03B21/16
Filed: 1936-12-03
Abstract: 481,821. Kinematograph projectors. BAUER GES., E. Dec. 3, 1936, No. 33144. Convention date, Dec. 6, 1935. Addition to 476,397. [Class 97 (i)] In apparatus according to the parent Speciiication, the part of the blower housing forming the bearing bracket of the motor is cooled by air projected by a fan mounted on a shaft common to the motor and blower. As shown, the motor housing a has a bearing bracket i housing a blower c. The housing k for the fan d forms an extension of the motor and blower housing, and provides openings e through which the cooling air is blown. A vane wheel f within the housing a cools the motor. The blower c and fan d are mounted on an overhanging part of the motor shaft.
Patent GB-819412-A (GB)
Title: Method of and apparatus for recovering magnesium
IPC: C22B26/22
Filed: 1957-10-23
Abstract: 819,412. Distilling magnesium. VEREININGTE ALUMINIUM WERKE A. G. Oct. 23, 1957 [Nov. 2, 1956], No. 33153/57. Class 82(1) Magnesium is recovered from magnesiacontaining materials by reduction with silicon, aluminium, or other substances producing as volatile oxidation products, the reaction mixture being conducted, under exclusion of atmospheric air, vertically, or substantially vertically downwards under the action of gravity through the reaction chamber either in the form of several rods of diameter 152-610 mm. or in the form of a single rod having a ratio of peripheral surface area to volume at least 4 m<SP>2</SP>/m<SP>3</SP>. The rod may be in the form of a compact body or of a granular, preferably briquetted, column held in an encasing envelope which may be of cruciform or star-shaped cross-section. In the apparatus shown in Fig. 2 reaction material 2 passes downwardly through tube 1 from an entry air lock 3 to an exit air lock 4. At the middle of the tube a condenser 5 is formed in which magnesium condenses in liquid state. The descending material is heated to reaction temperature by burners 9 and 10. The reacted material is cooled when it passes below the condenser by a jacketed portion of the tube 1 supplied with cooling air. In a modification Fig. 3 (not shown) in the heating and reaction zones the rod may be contained in a porous ceramic tube externally heated by electric resistance elements. In a further modification, Fig. 4 (not shown) the reaction zone and adjoining portions of the heating and cooling zones are enclosed in porous ceramic tubes and colder portions of the heating and cooling zones are enclosed in heat resistant steel tubes. Apparatus in which porous ceramic tubes are used is enclosed in a bricked furnace structure with a gas-tight skin. Condensation of magnesium may be effected in two separate condensers which are used alternately and each being equipped with heating and cooling means. When one condenser is charged with magnesium, the entrance to it is plugged by condensation of magnesium in the solid state while its contents are removed. Alternatively a single condenser may be used, having a barometric gravity discharge tube through which condensed magnesium flows continuously, two further condensers being connected in parallel with each other and in series with the main condenser. These two subsidiary condensers are operated alternately and serve to condense the last traces of magnesium from the exit gases. Scavenging or inert gases may be introduced into the furnace between the heating zone and the reaction zone and between the cooling zone and the exit air lock, an outlet pipe for the gases being provided between the entry air-lock and the heating zone. The flow of gas serves to prevent condensation of magnesium on the colder parts of the charge and to prevent entry of oxidizing gases into contact with the magnesium vapour.
Patent GB-875945-A (GB)
Title: Improved thermosetting moulding powders
IPC: C08K5/43
Filed: 1959-09-30
Abstract: A thermosetting moulding powder comprises a fibrous material, a thermosetting urea-formaldehyde resin and 0,1%-10% by weight, based on the total weight of resin and fibrous material, of an accelerator which is a salt of the half amide of sulphuric acid. In an example, 30 parts of alpha cellulose fibre was mixed with an aqueous solution of 70 parts of a urea-formaldehyde condensate, the mixture dried, and while milling, 0,5 parts ammonium sulphamate and small amounts of hexamethylene tetramine, zinc stearate and lithopone added.
Patent GB-408550-A (GB)
Title: Improvements in air directors for liquid fuel and/or powdered fuel furnaces
IPC: F23D11/00
Filed: 1933-11-28
Abstract: 408,550. Furnace fronts. BOLT, F. L., 15, Latimer Street, Tynemouth, and WALLSEND SLIPWAY & ENGINEERING CO., Ltd., Wallsend-on-Tyne. Nov. 28, 1933, No. 33265. [Class 51 (i).] In a liquid or pulverized-fuel furnace front of the kind in which air passes to the furnace both through and externally of a tube 2 surrounding the burner 11, the supply of air through the tube is controlled by a dish-shaped valve 7 slidably mounted on the burner-carrier 3 and having its concave face presented towards the inlet end of the tube 2. The valve is operated by a handle 8. In the form shown in Fig. 1, the frusto-conical extension 1 of the tube 2 carries a baffle ring 14 and is formed with vanes 5 which impart a whirling motion to the air entering the furnace through apertures 4. Fig. 2 shows a modification in which vanes 13 are disposed between the inner end of the tube 2 and an outer cylinder 12. Specification 361,779 is referred to.
Patent GB-1291157-A (GB)
Title: A method and apparatus for producing flexible tubular bodies
IPC: F16L11/16
Filed: 1970-07-09
Abstract: 1291157 Making flexible tubes; coiling helices SOC ANON DES HAUTS FORNEAUX DE LA CHIERS 9 July 1970 [10 July 1969] 33279/70 Headings B3A and B3E [Also in Division F2] A flexible tube formed by a metallic strip helically wound on a synthetics tube is formed by passing a flattened synthetics tube 7 through at least one die 8, 9, 10 so as to form it into an arc, leading the deformed tube 7 into a helically wound metal tube 6 and returning the tube 7 into a cylindrical shape to engage the metal tube 6 by a mandrel 13 positioned within the tube 7 downstream of a member 2 for coiling the metal strip. The dies 8, 9, 10 and the tubes 6 and 7, may be rotated at the same speed. In one embodiment, the mandrel is held in position by fluid pressure or by magnets. A second mandrel 17 may be positioned within the tube 7 upstream of the dies 8, 9, 10, the two mandrels being connected by a pipe 18 provided with a Venturi 19. The tube 7 is flattened by passing air through the pipe 18.
Patent GB-1381416-A (GB)
Title: Controlled temperature incinerator
IPC: B09B3/00
Filed: 1973-07-12
Abstract: 1381416 Incinerators; controlling temperature AIR PREHEATER CO Inc 12 July 1973 [14 July 1972] 33304/73 Heading F4B An incinerator for the disposal of waste without oxidating or melting any metal contained in the waste comprises a pyrolysis chamber, an after burner chamber connected to the pyrolysis chamber and a duct returning the oxygen containing waste gases from the after burner to support the pyrolysis of the waste. Gases produced by pyrolysis of the waste in chamber 12 are burned with addition of fuel, if necessary, and air preheated by the exhaust gases in an after burner chamber 18. Some of the exhaust gases from the chamber 18 may be released to atmosphere, the reaminder passing through air preheater 32 and fan 25 to support pyrolysis in the chamber 12. The supply of fuel and air to the after burner are controlled in accordance with the temperature in chamber 18, and the amount of gas recirculated is controlled in accordance with the temperature in the pyrolysis chamber 12.
Patent GB-958265-A (GB)
Title: Improvements in and relating to a device for filling objects into bags and bag for use in connection with said device
IPC: B65B43/54
Filed: 1961-09-18
Abstract: 958,265. Packaging; opening paper bags. O. G. HOYER. Sept. 18, 1961, No. 33394/61. Headings B8C and B8K.  A machine for filling objects into bags comprises means for dropping an object into the front bag of a pile, the bag being opened by a current of air directed towards the bag located in its filling position, characterized by a suction face on to which the front side face of the bag is sucked so that the object drops straight into the bag. The objects are supplied at A and are carried by a conveyer belt 4 under a guiding grid 6 and drop through the latter. A stack of bags is supported between guide rods 18 on a peg 14 which passes through apertures 21 in an extension of each bag rear wall. The foremost bag 12 is blown open by the current of air from the blower mouth piece 17 and the front face 13 of the bag is sucked against a surface 9 by air passing through holes 10. The bag is torn from the peg 14 by the momentum of the object, and the bag and object fall on to a guiding grid 20. The peg 14 may have a cutting edge to facilitate the tearing of the bag.
Patent GB-648236-A (GB)
Title: New or improved method of and apparatus for the tanning of hides, skins, and the like
IPC: C14B1/00
Filed: 1948-12-30
Abstract: 648,236. Leather making. WILSON, E. G. Dec. 30, 1948, No. 33472. [Class 76] A method of tanning leather consists in immersing the leather in a tanning liquor, causing the leather to follow a travel path in which it is guided over and around appropriately positioned rollers whereby it is bent repeatedly from end to end, first in one direction and then in the opposite direction, and between each bending is supported in an unflexed position on or by conveyer bands, or their equivalents, arranged to move between the said rollers, for controlled periods of time. A suitable apparatus comprises a tanning pit a having a framework a<SP>1</SP>, which supports a series of rollers band b<SP>1</SP> disposed adjacent to the opposed sides a2, a3 of the pit, each opposed pair b, b<SP>1</SP> of said rollers carrying an endless conveyer band c of openwork fabric, the edges of which are provided with locating strips d adapted to engage circumferential grooves d<SP>1</SP> in the rollers band b<SP>1</SP> to prevent lateral movement of the conveyers during operation of the same. Sprocket wheels f are so arranged as to carry a pair of endless chains e, e in a zig-zag travel path from the top to the bottom of the pit and from thence vertically upwards from the bottom to the top, as indicated by the chain-dot line of Fig. 1. The rollers b are each fitted with a spur-wheel g, and said spur-wheels mesh one with another so that when the uppermost roller b is rotated by a suitable power unit (not shown) driving through sprocket h, adjacent rollers-and consequently the conveyers c-are driven at the same speed but in opposite directions. Leather x (Fig. 3) to be treated is secured by cords m to a batten j having a slotted portion k<SP>1</SP> which engages with opposed pins e<SP>2</SP> carried by lugs el which are provided at intervals along the endless chains e, e. The cords are prevented from being displaced laterally by the serrations j<SP>1</SP> on the leading edge of the batten, while the batten itself is held in position by the springs e<SP>3</SP>. When the apparatus is set in motion, the leather will follow the path of the chains e, e as indicated by arrows in Fig. 1. In a preferred embodiment it is arranged for the apparatus to be driven at a speed which becomes progressively slower as the treatment proceeds, thus gradually prolonging the periods during which the leather is in the unflexed state.
Patent GB-487753-A (GB)
Title: Improvements in or relating to gas masks
IPC: A62B18/08
Filed: 1937-12-03
Abstract: 487,753. Gas-masks. INGRAM, G. Dec. 3, 1937, No. 33477. [Class 81 (ii)] A gas-mask having around its boundary a flexible rubber margin strip 2, which may be either in the form of pneumatic tubing or a thin flat strip of rubber, is characterized in that the eye piece or pieces 3 is or are provided with a flexible rubber surround 4 which makes intimate contact with the face by means of the increased pressure when exhaling, thus preventing breath reaching the eye piece or pieces, these being entirely surrounded by the main air space within the mask. The flexible surround to the eye piece or pieces may be pneumatic tubing, Fig. 2, which may be moulded to fit the features or it may be a flap of solid or sponge rubber as shown in Fig. 3. The exhaust valve 5 and inlet valve 6 are situated beneath the nose of the wearer.
Patent GB-886345-A (GB)
Title: Improvements in or relating to simulating apparatus for the experimental testing of control loops of electrical control systems
IPC: G06G7/66
Filed: 1958-10-20
Abstract: 886,345. Telecommunication assemblies. SIEMENS-SCHUCKERTWERKE A.G. Oct. 20, 1958 [Oct. 19, 1957], No. 33482/58. Class 37. Simulating apparatus for the experimental testing of electrical control systems comprises an assembly of a plurality of identical units each of which comprises an amplifier and circuit elements of adjustable value whereby by insertion of a function plug, the gain and the gain/ time characteristic of each unit may be given a predetermined value. The individual units may each be caused to simulate a predetermined function so that in their combination a clear model of a control system problem may be obtained. Fig. 1 shows one of the units having a plurality of two terminal inputs 1-3 and 4-6 and two terminal outputs O1, 02. The inputs 2, 3, 5, 6 are connected to a symmetrical transistor amplifier in the unit through resistors and may be employed for feeding a number of quantities into the amplifier. Adjustable impedances may be connected between the inputs 1 and 4 and the amplifier. The two double-step switches 7, 8 and 7A, 8A enables the value of amplification and the variation of amplification with time of the unit to be adjusted. A function plug 9 which has formed on its face the image of the transfer function which the unit obtains by insertion of the plug, has the impedances and connecting conductors shown in thick lines in Fig. 2 of the drawings. Thus as shown in Fig. 2, the amplifier 12 has a negative feed-back circuit comprising adjustable capacitors 13 and 14 and resistors 15 and 16 which are contained in the function plug. The unit of Fig. 1 when the function plug of Fig. 2 is inserted has the characteristic of amplification with effect to time as shown in Fig. 2a. The absolute value of the amplification may be varied by the switches 7, and 8, and of the time function by variation of the switches 7A, 8A. By changing the function plug various characteristics of the unit both of amplification and time can be effected, Figs. 4 to 11 (not shown). Fig. 15 shows an overall system comprising ten units of the type shown in Fig. 1 and two current supply sets. The model units and current supply sets are disposed in three stacked frames 29 on a table 27 which has a drawer 28 to accommodate the function plugs, a highspeed recorder 32 is also mounted on an associated table 31 to record the transfer functions. The high-speed recorder may be replaced by a synchronized oscillograph with a suitable afterglow period. In Fig. 18 (not shown), nine different transfer functions are obtained by assemblies of individual units with predetermined settings of the switches. Fig. 16 shows a block diagram of a Ward-Leonard drive regulated by a magnetic amplifier. The amplifier is provided with a follow-up with characteristic quantities which are to be optimized, the individual transfer function of the elements of the overall assembly with their amplification values and power constants are shown in Fig. 16.
Patent GB-1101663-A (GB)
Title: Variable area nozzles for jet propulsion engines
Inventor: FULLER JOHN RODNEY DYSON
IPC: F02K1/00
Filed: 1963-08-23
Abstract: 1,101,663. Deflecting propulsive jets. BRISTOL SIDDELEY ENGINES Ltd. 19 Aug., 1964 [23 Aug., 1963], No. 33496/63. Heading B7G. [Also in Division F1] A jet propulsion nozzle 10 is rotatable about an axis 17 between a position in which gases are discharged vertically downwards, Fig. 1A (not shown), and a position in which part of the nozzle outlet is obturated by a vizor 16, Fig. 1B (not shown). A flow control surface 18, extending downstream of the vizor, ensures that the direction of thrust remains substantially constant for all positions of the nozzle between its most fully obturated position and the position shown, wherein the nozzle outlet is just clear of the vizor. Fuel may be burnt in the duct leading to nozzle 10, and the fuel supply may be controlled in response to the nozzle position. Means may be provided for covering the gap between the nozzle and a cutaway portion (19) of fairing (15) when the former is substantially horizontal, Figs. 6 and 6A (not shown). In a modification, Fig. 7 (not shown), the part of the fairing including the vizor (16) and the surface (18) is also rotatable about axis (17), the mechanism for rotating this part being linked with that of the nozzle. The invention may be applied to a gas turbine jet propulsion engine, Fig. 8 (not shown), the whole engine being rotatable.
Patent GB-780171-A (GB)
Title: Improvements in temperature-sensitive actuating elements particularly for flame-failure devices
Inventor: HORSTMANN KENNETH JOHN
IPC: D06M15/41
Filed: 1954-11-19
Abstract: 780,171. Temperature-responsive actuating-elements. HORSTMANN GEAR CO., Ltd. Dec. 7, 1955 [Nov. 19, 1954], No. 33532/54. Class 64(2) [Also in Group XXIX] In a temperature-responsive element of the kind wherein a tube 5, heated at one side distorts and bends laterally, the tube has a slot or slots 18 to reduce the conduction of heat transversely of the tube from its heated side. As shown, a rod 15 secured at one end to the slotted end of the tube 5 extends from its open end to operate, by means of a stem 14, a spring- loaded valve 10 in a main gas pipe 7 on which the tube 5 is secured by a bracket 6. A pilot gas jet 17, which might be moved around the tube 5 to vary the direction of the rod movement, is mounted to heat the side of the tube adjacent the pipe 7. Specification 643,482 is referred to.
Patent GB-387464-A (GB)
Title: Improvements in machines for winding foils or other thin flexible material
IPC: G03B21/43
Filed: 1931-12-04
Abstract: 387,464. Winding webs. CELLULOID CORPORATION, 290, Ferry Street, Newark, New Jersey, U.S.A. Dec. 4, 1931, No. 33694. Convention date, Dec. 4, 1930. [Class 100 (i).] Web-winding apparatus, particularly for wrapping-foils formed from a cellulose derivative, comprises a feeding-roller, means for laterally smoothing the material on the roller, and a rotatable winding core so arranged as to maintain the material thereon in contact with the feeding-roller. The foil 6, Fig. 2, is fed by the feeding-roller 7 and wound on a core carried by a shaft 14 mounted in links 16 pivoted to arms 18 hung on a shaft 19 which is so positioned that the material on the core is maintained in contact with the roller 7. To tension the foil longitudinally as it is wound, the shaft 14 is driven by grooved friction pulleys 20 engaged by friction wheels 23 driven by belts 28 from the shaft 19. The foil is smoothened laterally while on the roller 7 by means of a pair of rubber-tyred discs 9 set at an angle to the edges of the foil and driven frictionally thereby. The discs 9 are carried by arms 12 hung upon a shaft 13 which also carries arms 32 on which are mounted cutting-discs 30, driven by belts 34, to trim the edges of the foil. Fig. 3 shows an arrangement whereby an empty winding core can be readily moved into the place of a full core. The cores are carried in the ends of arms 37 pivoted on bushes 36 on the shaft 25 carried by the arms 18. The bushes 36 have slots 39 by which they may be held eccentrically of the shaft 25 by springs 41 and bell-crank levers 42 to hold the friction pulley 20 of the active core in engagement with the driving-wheel 23.
Patent GB-359749-A (GB)
Title: Improvements in or relating to gas-filled electric lamps
IPC: H01K1/50
Filed: 1930-11-10
Abstract: 359,749. Electric incandescent lamps. VEREINIGTE GLœHLAMPEN UND ELECTRICIT€TS AKT.-GES., Ujpest, near Budapest. Nov. 10, 1930, No. 33797. Convention date, Aug. 8. [Class 39 (ii).] Gas-filled electric incandescent lamps with metallic filaments are provided with a filling gas having a molecular weight which is at least onethird of the molecular weight of the substance of which the filament is made and is stable at the temperature of the filament. The rare gases of high molecular weight such as crypton and xenon are used as a filling for tungsten filament lamps. A quantity of another inert gas such as nitrogen may be added to the gas of high molecular weight, the partial pressure of the latter gas preferably being equal to 10 mm. of mercury.