baber/WOPTO huggingface dataset:
Patent GB-730573-A (GB)
Title: Improvements in jet propulsion units
Inventor: KADOSCH MARCEL
IPC: F02K7/08
Filed: 1952-04-04
Abstract: 730,573. Jet propulsion plant. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. April 4. 1952 [May 30, 1951], No. 8720/52. Class 110 (3). A jet propulsion unit comprising a duct to which combustion gas is continuously supplied such as jet and propeller turbine engines, ram jets and rockets, has at least two jet nozzles each having an inlet opening adjacent the duct and means associated with the duct in the vicinity of the inlet openings to cause the combustion gas to flow successively toward the inlet openings and into the respective nozzles. The exhaust duct 1, Fig. 1, of a gas turbine jet propulsion engine leads to a propulsion nozzle having a central nozzle 7a and an annular peripheral nozzle 6a, the areas of which are equal. The inlet 8 of the duct 7 is greater than the throat of the duct 1 so that when the deflector device described below is not operating, the flow through the nozzle 7a is unobstructed. The deflector comprises a hollow tapered member 9 having a slot 10 extending over its periphery to which compressed air from any suitable source such as an intermediate stage of the compressor 3 is supplied through a conduit 12 fitted with a control cock 14. The control member 15 is driven continuously by a motor (not shown). In one position of the member 15 air is not supplied to the member 9 and the working fluid flows through the inlet 8 through the nozzle 7a, When the member 15 has turned through 90 degrees, air is admitted to the slot 10 in the member 9 and the gas flow is deflected through the nozzle 6a as shown by the arrows in the upper half of Fig. 1. An annular grid of vanes 17 evens the flow into the nozzle 6a. Pipes 18 leading from the atmosphere to the inner duct prevent back flow of hot gases from the annular nozzle 6a into the inner duct through the nozzle 7a. The increase in area of the ducts between the inlets and the nozzles 6a and 7a are preferably the same. In a modification, the two nozzles are arranged side-byside and in this arrangement, the flow to the nozzles may be controlled by compressed air jets or by rotary baffles. In another modification, provision is made to supply atmospheric air to the ducts leading to the nozzles between pulses of working fluid. In another arrangement, Fig. 8, the working fluid from the duct 1 passes into a distributer 28 which is rotated by a motor 31, so that as the distributer 28 rotates, working fluid is supplied to the nozzles 6a, 6b, 6c ... which are arranged in a circle. The distributer 28 may be arranged so that it discharges the working fluid with a tangential component, in which case the motor 31 may be dispensed with.
Patent GB-116496-A (GB)
Title: Terminal for the Attachment of Magneto Wires to Sparking Plugs of Engines.
Inventor: MARAZZI ETTORE
IPC: H01T13/04
Filed: 1918-05-27
Abstract: 116,496. Marazzi, E. March 21, 1917, [Convention date]. Binding-posts and terminals.-A terminal for securing the conducting- wires of magnetos to sparking-plugs consists of a tube 2 provided at one end with a screw-and-nut connexion with the sparking-plug, and at the other end formed with a slot in which is pivoted a plate 7. When the plate is turned to lie along the axis of the tube, the eye 11 at the end of the wire 9 may be slipped over the end of the tube; upon the plate being turned into the position shown, it secures the eye on the tube. The eye is held up to the plate by a coiled spring 8, the upper end of which is bent inwards to engage the slot in the tube.
Patent GB-1503839-A (GB)
Title: Dental apparatus
IPC: A61C17/14
Filed: 1976-03-04
Abstract: 1503839 Basins; spittoons &c SIEMENS AG 4 March 1976 [7 March 1975] 08775/76 Heading A4N At least the lower portion 7 of a dental spittoon 5 is moulded integrally with the cover 3 for a housing 1. Preferably the upper wall portion 8 varies in height around its circumference and may be located in either of two operative positions by engaging lugs 9 in recesses 10. The cover supports a pivotable water inlet pipe 6 and a glass 4, plug-in fluid couplings 11, 12 being located within the housing.
Patent GB-795409-A (GB)
Title: Collapsible armchair
IPC: A47C4/10
Filed: 1956-03-21
Abstract: 795,409. Folding chairs. KRALJ, N. March 21, 1956, No. 8800/56. Class 52(2) In a foldable arm-chair the front and rear legs 1, 2 are pivoted to the armrest 5 and the seat 6 is pivoted at 7 to the front legs. The back frame 12 is pivoted at 17 to the arm-rest and linked to the rear edge of the seat the upper pivot 10 of the link being extended to engage a slot 14 in the rear legs.
Patent GB-595469-A (GB)
Title: Improvements in or relating to ships' screw propellers with hollow blades
IPC: B63H1/12
Filed: 1945-04-10
Abstract: 595,469. Screw propellers. LIPS, M. M. H. April 10, 1945, No. 8905. Convention date, March 21, 1942. [Class 114] Hollow blades are filled with a material that is solid at the operating temperature of the propeller but which permits joint deformation of the blade and itself without the blade breaking, buckling or cracking. The filling, of pitch and sand, artificial resin or an alloy of the aluminium, zinc or manganese groups, is inserted through small holes drilled in the blade.
Patent GB-970020-A (GB)
Title: Toy periscope
IPC: G02B23/08
Filed: 1963-03-06
Abstract: 970,020. Periscopes. LOUIS MARX & CO. Ltd. March 6, 1963 [March 13, 1962], No. 8928/63. Heading G2J. A toy periscope comprises an eye opening 14, four windows 16, 18, 20 (are not shown) having different aspects, e.g. forwards, backwards and to either side, three mirrors 30, 32, 34 and control means which enable the viewer to see in any direction by changing the position of two (30, 34) of said mirrors. The mirror 30 is pivoted to a control rod 24 at 38 and to the housing at 36. For forward viewing the mirrors 30, 34 form a conventional periscope, and for backward viewing the mirror 30 is tilted by the rod 24 and light reflected on to it from the mirror 32 (Fig. 3). For sideways viewing the mirror 34 is rotated by the handle 26 until it is vertical and can then be rotated about a vertical axis.
Patent GB-1530952-A (GB)
Title: Non-contacting pressure detection system
IPC: G01L9/16
Filed: 1976-03-05
Abstract: 1530952 Measuring pressure electrically EXXON NUCLEAR CO Inc 5 March 1976 [13 March 19751 08928/76 Heading GIN The pressure of a pressurized system e.g. a nuclear reactor fuel rod is measured by placing in the system a sensor of a material whose permeability is dependent upon stress and monitoring the changes in permeability by applying a magnetic field to the sensor from outside the system. A cylindrical nuclear reactor fuel rod element, Fig. 3. (not shown) is sealed at one end by end-plug 12 in the shank 13 of which is positioned a cylindrical magnetostrictive ferrite sensor 14 in which is sealed an atmospheric gas by end caps 16, 18. The sensor is held in position by spring 20 acting on retaining cap 22 provided with aperture 24 through which gas from the fuel rod passes and applies stress to the sensor 14. A coil 40, Fig. 4, supplied with constant A.C. from generator I 2  is wrapped around shank 13 and the output thereacross is fed to one input of differential amplifier 42 to the other input of which is fed the output from coil 38 associated with a reference sensor maintained at ambient pressure and temperature. The output of amplifier 42 is then fed via summing amplifier 43 to a phase sensitive discriminator in the form of an A.C. to D.C. converter comprising analog multiplier 56 and filter 58, 60, a reference signal being fed to multiplier 56 from phase shift bridge 48. The output from capacitor 58 is proportional to the changes in reactance of coil 40 and hence pressures. During initial calibration the output from amplifier 43 is nulled by a signal from phase shift bridge 46.
Patent GB-1014988-A (GB)
Title: Improvements in or relating to methods and devices for ultrasonic welding
IPC: B23K20/10
Filed: 1964-03-03
Abstract: 1,014,988. Welding by pressure. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. March 3, 1964 [March 6, 1963], No. 8952/64. Heading B3R. [Also in Division B5] In making a welded joint the workpieces are supported by a movable supporting member, are contacted by the end of an amplitude tranformer which is maintained in ultrasonic vibration and are propelled in a direction parallel to the direction of ultrasonic vibration simultaneously with the formation of the welded joint. The cylindrical metal body and the cover of a can 9, 10 are supported on a roller 11 rotatable about a spindle 12 in a thrust member 13 adapted to be pressed by a force P. The pieces 9, 10 are engaged by the portion 5 of an amplitude transformer 4, 5 secured to an ultrasonic transducer 2, a thin support plate 7 being provided for the end of the portion 5. Depending on the force P the workpieces become welded and either move towards or away from the transducer. The support may be slidable rather than rotatable. Aluminium strips may be welded and the welding of plastics is referred to.
Patent GB-177061-A (GB)
Title: A novel or improved device or apparatus for use when cutting or slicing bread or like material
IPC: B26D7/00
Filed: 1921-03-24
Abstract: 177,061. Pugh, T. March 24, 1921. Cutting slices in succession.-In a hand slicing- appliance, the knife-guide b is of inverted U- shape and is pivotally connected to the base, being swung down to the plane of the board when not in use; it is retained in a vertical position by engagement with a recess in the side of the base, into which it is pressed by the thumbscrew b<1>. The bread rests on a sliding table a<2>, having spikes a<3>, and is retained between guides a<1>,
Patent GB-798321-A (GB)
Title: Method and apparatus for separating fluids by thermal diffusion
IPC: B01D17/00
Filed: 1945-04-11
Abstract: <PICT:0798321/III/1> In separating fluid mixtures by thermal diffusion, the mixture is introduced into a separation zone between two vertically spaced thermally conducting parallel members which are maintained at different temperatures and move in opposite directions. As shown, an elongated shallow separation chamber is formed between two hollow members 1, 4 through which pass cooling and heating fluids respectively.  An endless tape 6, made for example of metal, is driven by pulley 7a and is arranged so that the two parallel courses of the tape move through the separation chamber in opposite directions.  A liquid or gaseous mixture is introduced at 24 and is caused to separate by the difference in temperature between the two tape courses; the separated fractions are carried by the courses of the tape in countercurrent with one another to outlets 25, 26.  The tension of the tape may be adjusted by screw 13.  The separation of an aqueous solution containing zinc sulphate and sugar is referred to.
Patent GB-455761-A (GB)
Title: Improvements in and relating to cartridge cases
IPC: F42B5/295
Filed: 1936-03-26
Abstract: 455,761. Cartridge cases. ALUMINIUMINDUSTRIE AKT.-GES., Neuhausen, Switzerland. March 26, 1936, No. 9083. Convention date, March 27, 1935. [Class 9 (i)] A cartridge case for military purposes is made of an aluminium alloy and provided with an artificially produced skin of oxide for example by anodic oxidation. The case may be greased.
Patent GB-160815-A (GB)
Title: Improved process for suppressing upper-harmonic anode currents in metal vapour rectifiers fed through polyphase transformers
IPC: H02M7/06
Filed: 1921-03-24
Abstract: 160,815. Akt.-Ges. Brown, Boveri, et Cie. April 1, 1920, [Convention date]. Vapour apparatus, arrangements of.-In order to suppress upper harmonic anode currents in a metalvapour rectifier fed from a polyphase transformer T with the primary windings A, B, C connected in polygon, the primary windings are connected to the net N through coils u, v, w mounted on the core of an auxiliary transformer T<1>.
Patent GB-1174332-A (GB)
Title: Improvements in or relating to Drives for Electric Timepieces.
IPC: G04C3/10
Filed: 1967-02-27
Abstract: 1,174,332. Clocks and watches. CITIZEN TOKEI K.K. Feb.27, 1967 [May 12, 1966], No.9221/67. Heading G3T. A drive for an electric timepiece comprises a mechanically driven balance or other oscillatory member coupled electromagnetically with a drive circuit comprising two transistors 1, 2 to the collector of each of which is connected a coil 3 or 4 in which drive and control voltages are generated, a capacitor 5 or 6 inserted between each collector and the base of the other transistor, and a resistor 7 or 8 connecting each base to a voltage source 10, and the product of the resistance and capacitance of the resistor 7 or 8 and the capacitor 5 or 6, expressed in units of time is longer than the period of natural oscillation of the balance or other oscillator, and the drive circuit, functions as an astable multi-vibrator and imports driving pulses to the balance or other oscillator twice in each period of oscillation of said balance or other oscillator. The balance may comprise two wheels 13, 14 carrying magnets 17, 19 and 18, 20, respectively co-operating with fixed coils 3, 4. Alternatively the mechanical oscillator may comprise a vibratory leaf 29 Fig. 10 (not shown) carrying a magnet which drives a magnetic escapement wheel of a reverse escapement.
Patent GB-1122710-A (GB)
Title: Automatic control of gas absorption unit
IPC: C10G5/04
Filed: 1967-02-27
Abstract: A control system for a gas separation apparatus in which a hydrocarbon gas is contacted in an absorber with a lean oil, the lower boiling gas fraction is separated from the oil in the gaseous state in a fractionator and the higher boiling fraction is separated in a still, comprises:-  means to establish a first signal representative of the allowable lean oil flow as a function of gas feed rate;  means to establish a second signal representative of the allowable lean oil flow in the fractionater;  means to establish a third signal representative of the allowable lean oil flow in the still;  means for selecting the lowest of the three signals; and means responsive to the selected signal controlling the flow of lean oil to the absorbing zone.  The flow of feed gas to the absorber, the heat content of hot lean oil recovered from the still and used to reboil fractionater bottoms, the reflux rate to the still, and the reflux to the fractionater may also be controlled by the determination of appropriate parameters by e.g. flow and temperature indicaters supplying signals to analog computing moduules which select the required signals to operate flow, temperature and concentration controllers.
Patent GB-806231-A (GB)
Title: Improvements in or relating to rectifier circuit arrangements using transistors
IPC: H03D1/18
Filed: 1957-03-21
Abstract: 806,231. Transistor detector circuits. TELEFUNKEN G.m.b.H. March 21, 1957 [April 25, 1956], No. 9292/57. Class 40 (6). In a transistor detector the input is applied to the base electrode, the output is derived from a resistance R1 in the emitter circuit which is shunted by a carrier frequency by-pass capacitor C2 and an inductance L is included in series with the resistance and the emitter electrode so as to reduce the positive feedback occurring through the emitter to base capacitance.
Patent GB-547554-A (GB)
Title: Improvements in or relating to the polarization of light
IPC: G02B5/30
Filed: 1940-05-27
Abstract: 547,554. Polarizing apparatus. STEVENS, A. H. (International Polaroid Corporation). May 27, 1940, No. 9311. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 28, 1940.] [Classes 97 (i) and 98 (ii)] Images wherein contrast is represented by variation of polarizing properties are formed, in a sheet of transparent plastic material having long chain molecules, by similarly orienting the molecules, and treating areas of the sheet to the action of a substance, e.g. a stain or dye containing iodine, which in conjunction with the orientation, converts the treated areas into polarizing areas. The plastic sheet 12 may consist of regenerated cellulose or polyvinyl alcohol, may initially carry a sensitized gelatine emulsion layer 16, and may, or may not, be carried by a rigid or flexible glass or other support 14. Exposure to light may be effected, through the support 14 and a contacting negative or positive, to produce image areas 18 which are formed into resist areas by usual methods involving the removal of unhardened gelatine. The staining or dyeing is then effected, and the resist removed. The resist may be otherwise formed, e.g. by applying paraffin wax, the design being formed by pressure of a half tone plate, or a separate finished resist may be applied to the sheet 12 by usual transfer methods. The Specification as open to inspection under Sect. 91 describes also the use of a resist to control the destruction of polarizing properties, by vapours or other media, of a sheet initally possessing such properties, vapour from a mixture of sodium bisulphate, Solox, isopropyl alcohol, and glacial acetic acid being a suitable destructive agent for a sheet comprising herapathite-like crystals. Other destructive agents are set out, and also bleaching baths for removal of the colour from the high lights of the image. This subject-matter does not appear in the Specification as accepted.
Patent GB-774742-A (GB)
Title: An improved socket construction for receiving spikes fitted to the soles and heels of golf shoes and the like
Inventor: HUTTON GEORGE PATERSON
IPC: A43C15/16
Filed: 1955-03-31
Abstract: 774,742. Detachable shoe studs. SAXONE SHOE CO., Ltd. Sept. 30, 1955 [March 31, 1955], No. 9400/55. Class 17 (3). Two or more threaded sockets 3 to receive studs 7 are rigidly connected by a thin flexible metal strap 4 secured by spot welding 5a to flanges 5 of the sockets 3 in such a way that the strap 4 closes the inner end of the sockets in a watertight manner. The sockets 3 extend through pre-formed holes in the outer sole or heel and are preferably arranged so that the strap 4 extends transversely across the sole so as not to impair its flexibility.
Patent GB-660098-A (GB)
Title: Improvements in or relating to thread tensioning mechanisms for textile machines
IPC: D03D49/08
Filed: 1947-04-09
Abstract: 660,098. Letting-off and taking back war take-up motion &c. LORD, W. April 23,1948 [April 9, 1947; July 30, 1947], Nos. 9425/47 and 20643/47. Class 142 (ii). Let-off motion, Fig. 2. The warp is tensioned by a weighted arm 3 coupled to the warp beam 1 through a differential gear, the casing 10 of which is rotated in the appropriate direction, as warp is drawn off or let back, to keep the arm 3 in about the position shown; the weight 5 is allowed to run down the arm as the beam empties by a cable 82 passing round pulleys 83, 84, 85, and anchored at 86 to an arm 87 operated by a warp feeler 90. The gear casing 10 is driven by a worm 15 on a shaft 16 carrying two ratchet wheels 19, 24 having their teeth. oppositely disposed; the wheel 19 has a continuously oscillating pawl 18; the wheel 24 has a pawl 23 which is oscillated manually only when fabric is being let back (as described below). Shields 20, 25 normally mask the pawls but, when the weighted arm 3 rises or falls excessively, an arm 27, acting through a link 28, moves the mid-points of toggles 29, 29a to straighten one toggle and break the other. The toggle 29 has its top pivoted at a fixed point 30, so that when its middle moves to the right (as the weighted arm 3 rises) its bottom 32 rises and swings the shield 20 to permit rotation of the shaft 16 by the pawl 18; conversely, the toggle 29a has its bottom 30a fixed and its top 36 coupled to the shield 25 to control the pawl 23 during let-back of the fabric. Take-up motion, Fig. 1. A lever 73 oscillated by the slay 54 operates a takeup pawl 52 which can be lifted clear of the ratchet wheel 53 by a handle 70 acting through an over-centre arrangement 67, 68 and a lever 65. A holding pawl 56, resiliently mounted in a stationary rocker 57. normally prevents backward movement of the take-up mechanism. The rocker 57 also has a pawl 59 and constitutes an escapement which, when the take-up pawl is disengaged, can be operated by a handle 60 to allow tooth-by-tooth let-back of the fabric; the handle 60 and the rocker 57 are coupled together by a toggle 78, 80, of which the member 78 is rocked by the handle 60. A cable 61 attached to the middle of the toggle operates the pawl 23, Fig. 2. According to the first Provisional Specification, the differential gear casing 10 is operated by a roller-type ratchet drive mounted on it, the stroke of the ratchet being increased as the weighted arm 3 falls farther below its normal position. According to the second Provisional Specification, this ratchet drive is reversible to correct also for the arm rising above its normal position.
Patent GB-590433-A (GB)
Title: Improvements in and relating to the manufacture of turbine rotors
IPC: F01D5/30
Filed: 1945-04-16
Abstract: 590,433. Turbine blades. SVENSKA TURBINFABRIKS AKTIEBOLAGET LJUNGSTROM. April 16, 1945, No. 9456. Convention date, May 6, 1944. [Class 110 (iii)] A straddle type of blade fixing is arranged with unequal prongs 3, 4 so that the blade can be engaged with the rotor rim 9 as shown in Fig. 1 and swung into the position shown in Fig. 3. The projections 6, 7 on the longer prong may be undercut and the final movement is radially outward. The blade is then secured by a caulking piece 17 which may be individual to each blade or may be a complete ring. The projections 6, 7 may have surfaces concentric with the swing axis and are, in that case, secured by a rivet.
Patent GB-261255-A (GB)
Title: Improvements in the trimming mechanism of typographical line casting machines
IPC: B41B11/72
Filed: 1926-04-12
Abstract: 261,255. Hart, H., (Mergenthaler Linotype Co.). April 12, 1926. Trimming type-bars.-In trimming-apparatus of the kind described in Specification 16517/11, in which the adjustments of the movable knife are effected against spring pressure by means of a rotary sector-plate having a series of screw studs, which project to different extents, locking-means is provided for preventing adjustment before the spring pressure has been released, in order to avoid wear of the parts. The adjustable knife A is carried by a slide B having a stud B<5>, which is held by the pressure of springs B<4> in contact with one of a series of studs D<1> on a rotatable sector-plate D. A pin B<6> on the slide rests in the path of a hand-lever E, which is pivoted to a rigid arm E<1>, and enables the slide to be retracted against the spring pressure. A spring plate F<1> carries a finger F, which is adapted to engage locking-notches in the plate D. The plate F<1> can be retracted by means of a handle F<2>, which is located close to the arm E<1>, so that the handle F<2> and the hand-lever E are grasped at the same time. A pointer F<3> co-operates with graduations on the sector-plate D. In a modification, which is adapted to be operated by one hand, the retraction of the slide B is effected by means of a turning-knob, which is subsequently moved along its shaft in order to withdraw the locking-plate F<1>. By this, movement the knob is connected through clutch surfaces with the sector-plate, which can then be rotated.