baber/WOPTO huggingface dataset:
Patent GB-790715-A (GB)
Title: Improvements in or relating to a ventilating pipe with relief valve
IPC: F24F13/10
Filed: 1955-12-02
Abstract: 790,715. Ventilating air raid shelters. DRAGER. O. H. Dec. 2, 1955 [Feb. 24, 1955], No. 34603/55. Class 137 A ventilating system, e.g. for a gas proof shelter 1, wherein excess pressure is produced by a supply of filtered fresh air regulated by a relief valve 4 adjacent the inlet end of an air outlet pipe 2 in a shelter wall, is characterized in that a non-return valve 6 is arranged adjacent the outlet end of the pipe 2 to protect the relief valve 4, against compression waves, e.g. from a bomb. The non-return valve 6 opens at a lower excess pressure than the relief valve 4. The non-return valve 6, pivoted by heat resistant hinges over the outlet end of the pipe 2, can be regulated by adjusting a counterweight 7 to vary its resistance to opening. In a modification, Fig. 2, the non- return valve comprises a clay, or concrete, brick 10, or alternatively, a steel plate covered with heat resistant material, which is pivoted on a spindle 11. The valve 10 may include a packing insert 12, e.g. of asbestos, which is disposed opposite an inclined projecting edge 13 of the pipe 2. the annular gap between the edge 13 and the sealing surface 14 being of sufficient size to ensure that exhausted air does not encounter appreciable resistance. In a further modification, not shown, the non- return valve is suspended from a chain and is urged away from the outlet opening of the pipe 2 by a number of springs which are accommodated in recesses formed respectively in the outer face of the shelter wall and in the opposing inner face of the valve plate.
Patent GB-1334032-A (GB)
Title: Magnetic stirrer device
IPC: B01F13/08
Filed: 1971-07-23
Abstract: 1334032 Magnetic stirrers LKB-PRODUKTER AB 23 July 1971 [10 Aug 1970] 34799/71 Heading B1C Fluid flowing through a cylindrical vessel 1 is stirred by rotation of a stirrer 2 consisting of a transversely magnetized rod situated between the poles 5, 6 of an electromagnet 7 energised by an AC source 10 which preferably consists of a frequency-variable oscillator. The stirrer may have vanes 11 which may be formed in a cover of, e.g. polytetrafluoroethylene. The rod 2 may have a bore, or may have a screw-shaped external surface to provide a pumping effect.
Patent GB-302503-A (GB)
Title: Improvements in the manufacture of cathodes for electric discharge tubes
IPC: H01J9/04
Filed: 1927-12-23
Abstract: 302,503. M-O Valve Co., Ltd., and Ryde, J. W. Dec. 23, 1927. Vacuum tubes.-In the manufacture of cathodes of electric discharge tubes, a metal support has deposited thereon a highly electropositive metal, such as an alkali or alkaline earth metal, after treatment with cyanogen. The support may be coated with the metal prior to treatment with the gas. In an example, a tungsten-filament cathode is mounted in an envelope together with another electrode or electrodes, the envelope is exhausted and its temperature raised to 3150‹ K. for thirty seconds. The temperature is then reduced to about 1350‹K and barium vapour is produced near the filament by heating an electrode which has been coated, e.g., with barium oxide, by applying a potential of 50 to 100 volts between the electrode and the filament. After a few minutes, the deposition of barium is stopped, the temperature maintained at 1350‹ K. and cyanogen at a pressure of a few hundredths of a millimetre is introduced. The cyanogen is then pumped out and another layer of barium deposited. Several treatments with barium and cyanogen may thus be made. Specifications 280,697 and 281,060 are referred to.
Patent GB-207402-A (GB)
Title: Improvements relating to the treatment of flour
IPC: A21D2/04
Filed: 1922-12-27
Abstract: 207,402. Clarke, T. Dec. 27, 1922. Bleaching and conditioning flour; treating flour with gases.-Flour is subjected successively to treatment with chlorine and nitrogen peroxide or vice versa. The treatment prevents loss of brightness and increases the bleaching and conditioning effects. Specifications 165,149 and 205,200 are referred to.
Patent GB-467588-A (GB)
Title: Improvements in or relating to feed mechanism for sewing machines
IPC: D05B27/22
Filed: 1935-12-19
Abstract: 467,588. Sewing - machines. ARMSTRONG, J. J. V. (Union Special Machine Co.) Dec. 19, 1935, No. 35231. [Class 112] The invention comprises feed reversing and regulating mechanism for the work-feeding device described in Specification 413,120. The mechanism consists of a control shaft 26 which, when rotated turns the shaft 21 via links 29, 28, 27 to displace the arm 23 relative to the arm 24 and so vary the throw of the feed dog 16. To adjust the feed, the dial 38 is rotated, shifting the projection 57 on the spring plunger 50 by the cam 36, fixed to the dial hy a pin 40, up or down along the lever 32 in the angular opening 53 of the stop plate 52. This affects the extent of swing allowed the control lever 32 by virtue of the angular stop edges 55, 56 of the plate 52. This decreases or increases the movements of the control shaft 26 and consequently the shaft 21. By co-ordinating the graduations in the dial 38 with the pointer 39 in the control lever 32, a definite stitch length for different settings will be indicated. As the lever 32 is swung to the right or left of a neutral position, the feed will be forward or reverse. By employing a suitably shaped cam, the reverse feed may be eliminated. To keep the shaft 21 in set position, a screwclamp brake 60, Fig. 4, may be used. Lubricating. An oil reservoir 22 supplies lubricant to the shaft 21.
Patent GB-470845-A (GB)
Title: Improvements in and relating to telegraphic printing machines or teleprinters, typewriters and like machines
IPC: H04L13/06
Filed: 1935-12-20
Abstract: 470,845. Typewriters. GOODMAN, R. A., COLLINGWOOD, J. A., and WESTERN UNION TELEGRAPH CO. Dec. 20, 1935, No. 35300. [Class 100 (iv)] Web-feeding arrangements; ink-ribbon mechanism.-In a typewriter, printing-telegraph, or like machine having, on the platen-carriage or a part connected thereto, pay-off and takeup spools for a carbon or paper web, a driving connection between the spools, arranged to compensate for differences in the diameters of the rolls on the spools, comprises a train of directly interengaging non-flexible members including a friction-clutch or a friction-coupling. In the printing-telegraph apparatus shown in Fig. 2, a paper web passing around the platen is led from a roll resting in a cradle, and is arranged over a hectograph carbon-web which passes from a pay-off spool 5<1> to a take-up spool 52, mounted in detachable end-members 1 on the platen-carriage. The cores of the spools have notches engaging pins 6, 10 on stub-shafts 2, 7, 8, the pins 10 being movable, in opposition to springs 11, to permit detachment of the spools. A pinion 12 fast on the shaft 8 engages a larger pinion 13 which is loose on the shaft 7 and is frictionally coupled thereto by means of a disc 14 abutting on the spring 11. The disc can be released by means of a plunger 15 to permit of the spool being turned by means of a knob 18. In the construction shown in Fig. 3, the pay-off spool 321 and take-up spool 32<2> are provided with large and small friction-cones 34, 33 engaging a friction-cone 35 which is mounted on a spring- pressed shaft 36. The friction-cone 35 can be retracted by means of a knob 40, to permit detachment of the spools, a bayonet-slot 37 and a pin 38 being provided for holding the frictioncone in retracted position. Specification 466,720 is referred to.
Patent GB-1149755-A (GB)
Title: Improvements in electrical phase discriminating circuits
Inventor: KNIGHT PETER MICHAEL
IPC: H03H11/04
Filed: 1965-08-18
Abstract: 1,149,755. Phase-sensitive circuits. ELLIOTT BROS. (LONDON) Ltd. 5 Aug., 1966 [18 Aug., 1965], No.35328165. Heading H3A. The circuit arrangement shown receives at its input terminals 5, 6 signals from a source S together with unwanted signals in quadrature thereto. The source S also provides a phase reference signal which switches the opposite polarity type transistors VT A , VT C  so that one is conducting and the other blocking alternately. The required component of the input signal in phase with the reference signal appears at the output terminals 7, 8 but the quadrature component is not transmitted. In another embodiment (Fig. 1, not shown) the transistors are of the same polarity type and are controlled by two reference voltages in antiphase.
Patent GB-1399187-A (GB)
Title: Current monitoring system for electric arc furnace conductors
IPC: H05B7/148
Filed: 1973-07-25
Abstract: 1399187 Measuring current D J GOODMAN 25 July 1973 [27 Sept 1972] 35334/73 Heading G1U [Also in Division H2] Each conductor 12 of a group of conductors forming one phase of a three-phase supply to an electric arc furnace has its current flow monitored by inductive pick-ups 16 connected to indicating voltmeters 28. The pick-ups comprise close-wound toroidal coils wound on rubber cores 30. The coil outputs are connected in series to a smoothing integrator 42 whose output may operate either an audible or visible alarm when the current in any conductor 12 fluctuates, or a recorder 56 which indicates the total current flow in one phase and receives a separate phase voltage measurement which is also recorded. The meters 28 may be calibrated to indicate the actual current flow in each conductor.
Patent GB-1387238-A (GB)
Title: Control systems for analytical apparatus
IPC: G01N35/00
Filed: 1973-07-25
Abstract: 1387238 Sampling for chromatography PYE Ltd 25 July 1973 35368/73 Heading B1H [Also in Division G3] Automatic liquid sampling apparatus for gas chromatography analysis is controlled by selected program information stored in an integrated circuit read-only memory. The sampling mechanism includes a turntable holding a number of sample vials, and a syringe for extracting samples from the vials and injecting them into a chromatograph column. The complete sequence of operations is determined by a manually set switch controlling a cycle of sub-programs for advancing the turntable and washing and operating the syringe.
Patent GB-1020835-A (GB)
Title: Improved automatic gain controlled amplifier means
IPC: H03G3/30
Filed: 1963-09-09
Abstract: 1,020,835. Transistor amplifying circuits. ALBISWERK ZURICH A.G. Sept. 9, 1963 [Oct. 8, 1962], No. 35449/63. Heading H3T. In an amplifier which includes a transistor T 1 with a wide-band transformer U as load in its collector circuit, the gain is varied by means of a pair of diodes D1 D2 coupled by capacitor C1 to form a variable shunt across the transformer primary. The diodes are connected in series for D.C., their electrodes remote from the capacitor C1 being earthed for A.C. by capacitors C2, C3. The amplifier V feeds into a detector Dt, the output of which is filtered to remove modulation by filter TP and applied to amplifier GV. This controls the base potential of a transistor T2, the collector current of which passes through the diodes D1, D2 and determines their impedance. A source Q in the emitter circuit of transistor T2 provides delay. The Specification gives a mathematical argument to show that non-linearity in the diodes D1, D2 is compensated by non-linearity of the transistor T2.
Patent GB-1023578-A (GB)
Title: Improvements in or relating to the preparation of photographic emulsions and complexes therefor
Inventor: PAPECK STANLEY PETER
IPC: G03C1/015
Filed: 1962-09-18
Abstract: A complex of silver iodide, silver bromide or mixtures thereof, bromide ions and dimethyl formamide dissolved in dimethyl formamide is prepared by dissolving the silver halide in dimethyl formamide, adding hydrobromic acid and then adding a further portion of dimethyl formamide.  Pyridine, pyrrolidone, N-dimethylaniline, butylamine or dibutylamine may be used instead of dimethyl formamide.
Patent GB-177229-A (GB)
Title: Apparatus for moulding concrete blocks and slabs for building houses and walls and other structures
IPC: B28B7/00
Filed: 1920-12-18
Abstract: 177,229. Wilkie, W. Dec. 18, 1920. Moulds; tamping-machines.-In a box mould for forming concrete blocks and slabs for walls &c., the front, sides, and cover are hinged and are slidable to relieve the suction between the concrete and the front &c. whereby smooth faces are formed on the block. The mould comprises a base A, to which is secured a back plate B. To the base are hinged, by means of hinge-members J<1> rotatable and slidable on bars J, a front H and sides E, and to the back plate is similarly hinged a cover D. The sides are held in position by pins F and the front is held by a bar G, a pin K', and a plate I. In operation, a pallet, indicated by the dotted lines a, b, is placed in the mould and concrete is filled in and tamped by means of the cover. The cover, front, and sides are then slid on the hinge-bars and afterwards hinged open, the block being removed with the pallet.
Patent GB-1096903-A (GB)
Title: Washing machine
Inventor: HASEGAWA EIICHI
IPC: D06F17/06
Filed: 1964-12-14
Abstract: 1,096,903. Washing machines. HITACHI Ltd. Dec. 14, 1964, No. 35655/66. Divided out of 1,096,902. Heading D1A. A washing machine comprises a vertical basket 2 rotatably mounted in a water tank 1 and made up of two parallel walls connected by arcuate walls and an impeller 3 at the centre of the basket 2 mounted on a shaft 49 rotatable at high speed within a hollow shaft 46 secured to the basket there being provided means for releasably connecting the hollow shaft 46 to the impeller shaft, braking means operating on the hollow shaft and resilient means mounting the tank 1 in a framework 4 which last means, during operation, convert part of the vibration energy, by friction, into heat. The washing machine is as described in Specification 1,096,902 and the tank mounting comprises a washer 28 mounted in the upper corner of frame 4 and having associated with it a semi-spherical nylon piece 29, a suspension rod 30 passing through piece 29 and washer 28. The lower end of rod 30 passes through washer 36 on tank 1, a nylon piece 37 and a washer 40. The upper end of rod 30 is held by nuts 32 engaging a washer 31 and the lower end carries a rubber ring 38 and a cup like slider 39 sliding in a rubber pipe 42 and engaging a coil spring 41 whose other end engages washer 40. A leg 75 on washer 36 is connected to framework 4 by a bolt 76 during transportation. The top of tank 1 is connected to frame 4 by a rubber member 11. The machine control is as described in Specification 1,096,902 and when the spin drying is completed and motor 14 is stopped to stop the rotation of shaft 46, electromagnet 18 is de-energized. Shaft 49 is thus disconnected from shaft 46, spring 72 is contracted and unites sleeves 67, 71 and thus brake disc 64 stops basket 2.
Patent GB-832859-A (GB)
Title: Improvements in or relating to cooling systems for an isolated phase bus system
IPC: H02G5/10
Filed: 1957-11-15
Abstract: 832,859. Cooling conductors; insulators; conduits. I-T-E. CIRCUIT BREAKER CO. Nov. 15, 1957 [Dec. 13, 1956], No. 35706/57. Drawings to Specification. Class 36. [Also in Group XXXV] A forced - cooled isolated - phase bus - bar system has the conductors of each phase mounted on insulators within and spaced from separate housings and is provided with means to force cooling fluid, e.g. air or hydrogen, through the hollow conductors, or through the space between the conductors and the casing, or through both, in one direction through one phase and in a second direction through another. A three-phase system is described in which the bus system connects a generator to a transformer ; a blower forcing the coolant down the centre phase, through a fluid-transfer box and back through the outer phases to a heat exchanger which is connected to the blower inlet. The conductor is spaced from the trunking by sets of three insulators mutually at 120 degrees, insulating bushings being provided to seal the conductors through partitions when the coolant is to be restricted to the inside of the conductor. Specification 818,029 is referred to.
Patent GB-867429-A (GB)
Title: Improvements in or relating to sound reproducing systems for time-keeping equipment
IPC: G04C21/12
Filed: 1958-11-06
Abstract: 867,429. Magnetic recording &c. methods chiming &c. clocks. JAHRESUHREN-FABRIK G.m.b.H., A. SCHATZ & SOHNE. Nov. 6, 1958 [Jan. 10, 1958], No. 35734/58. Class 40 (2). Chimes &c. are recorded on a tubular record 1 of permanent magnetic material at such intensity that when the record is installed in a small clock, a playback head is able to operate a loud-speaker 8 without an intervening amplifier. A recording head, Fig. 1, has sharpened polepieces 3, 4 engaging the record through holes in a magnetic shield member 6, the record being turned by means 9 such that a helical track is recorded. In the clock, the record may be driven mechanically by such means as normally drive striking mechanisms, or in another embodiment, magnetic poles at one end of the record may be associated with field windings such that the record forms its own motor, which may also drive the clockwork. In a simpler embodiment (not described in detail), the record may be disc-form carrying a singleturn circular record track, which may contain a waveform appropriate to an alarm clock.
Patent GB-387098-A (GB)
Title: Improvements in or relating to web controlling mechanism for printing presses or thelike
IPC: B65H23/06
Filed: 1931-12-30
Abstract: 387,098. Feeding webs. GOSS PRINTING PRESS CO., 1535, South Paulina Street, Chicago, U.S.A.-(Assignees of Richter, C. J. ; 2304, Lombard Avenue, Berwyn, Illinois, U.S.A.) Dec. 30, 1931, No. 35994. Convention date, Sept. 23. [Class 100 (i),] A web-controlling mechanism comprises means for supporting an active web roll and one or more reserve rolls, each of which is adapted to be rotatably mounted to supply web to a web-using machine, together with a common brake mechanism which is independently mounted and spaced from the web rolls and having means whereby the web rolls may be alternatively coupled to the brake mechanism. The rolls, such as A, are mounted in chucks on shafts fixed in a carrier, comprising arms 1, one only of which is shown, rotatable about a central shaft 3, and a sprocket on each of the shafts 7 of the chucks 6 is connected by a chain 37 to gear 36 on the appropriate shaft 35 carried by a pair of plates 32, fixed to the shaft 3 on opposite sides of the arms 1. The shafts 35 carry sprockets 40 slidably mounted thereon by pins 41 which engage slots 42 in the shafts. The sprockets 40 are adapted to be slid into engagement with a gear 43 formed integrally with a gear 48 and rotatably mounted on the shaft 3. The gear 48 is connected by a chain 47 with a brake pulley 10, so that, when the sprocket 40 engages the gear 43, the active roll is connected to the brake pulley. A floating spring-pressed roller, carried by the web, serves to vary the braking force applied to the pulley 10 by two resilient brake arms 14 which surround the pulley and are pivoted at one end, the other ends being connected through linkage with the floating roller. The Specification as open to inspection under Sect. 91 describes a modification in which the brake pulley 10 is integral with the gear 43. This subject-matter does not appear in the Specification as accepted.
Patent GB-1247201-A (GB)
Title: Apparatus for agricultural spraying or sprinkling
IPC: A01M7/00
Filed: 1968-07-29
Abstract: 1,247,201. Spraying apparatus. CARL PLATZ G.m.b.H. 29 July, 1968 [29 July, 1967], No. 36021/68. Heading A1D. [Also in Division E1] In an agricultural spraying or road sprinkling apparatus for use with a tractor or like vehicle, a positive displacement pump 2, Fig. 2, is driven from the vehicle power take-off shaft and delivers through an outlet pipe 5 leading, through a valve 8, to the spraying tube, and passages 6, 9 leading to the reservoir 1 are connected to the pipe 5, the passage 6 containing a bypass valve 7 which opens when the valve 8 closes, and the passage 9 containing a manually-operated valve 10 for controlling and indicating the spray volume per unit surface area in accordance with vehicle engine speed and gear ratio. The control valve 10 may be a lift valve, or a throttle valve (Fig. 7, not shown) with an angularly adjustable body (25) having an annular passage (23) communicating with the inlet and with a tapering groove (27) that, depending upon the angular position of the body (25), presents a variable cross section to the outlet (28) so that, at constant static pressure, the quantity discharged through the valve varies as the cross section. In another embodiment, (Fig. 3 not shown) the valve 8 is omitted and a further passage (13) to the reservoir is provided containing a shut-off valve (14) and a further control valve (15), the output pipe 5 leading to a distributor head 16 from which branch pipes lead to two separate sets of spraying nozzles. The further control valve (15) regulates the output when one set of nozzles is sealed off by means of a respective cut-off valve (18). In a modification of this (Fig. 4 not shown), the branch pipes (17) have two-way valves (19) so that the flow therethrough can be directed to the reservoir via a return pipe containing the further control valve, the pipe 13 and valve 14 being omitted. The control valves each carry a scale co-operating with a pointer of a hand lever and may be assembled in a common housing. The spraying apparatus may be mounted on the vehicle.
Patent GB-450536-A (GB)
Title: Running and like athletic shoes
IPC: A43B5/06
Filed: 1934-12-15
Abstract: 450,536. Running &c. shoes. BUTLER, G. M., Woodmans, Chipperfield, Hertfordshire. Dec. 15, 1934, No. 36045. [Class 17 (ii)] A running or like athletic shoe is provided with holes 10 in the sole through which protrude spikes carried by a removable and interchangeable thin flexible metal plate 11 A facing 12 of thin leather or like material is adhesively secured to the surface of the plate and a layer of sponge rubber or similar soft material is adhesively secured to the leather. Alternatively, the rubber may be directly secured to the plate. The inside surface of the outer sole is also preferably provided with a thin rubber layer 14 into which the washers or enlargement 15 tend to bed and thereby prevent the entrance of grit into the shoe. The same effect may be obtained by applying a gasket to the underside of the metal plate. A spiked plate may also be provided for the heel of the shoe. Specification 449,146 is referred to.
Patent GB-166858-A (GB)
Title: An improved mount for framing photographs and the like
IPC: A47G1/06
Filed: 1920-12-23
Abstract: 166,858. Kaufmann, S. H. Dec. 23, 1920. Sheet material, binding edges of. - Binding- strips of metal or other ductile material, for mounting photographs and the like under celluloid or other transparent material, are serrated on both edges as shown in Fig. 1 or as in Fig. 7, and doubled over as shown in Fig. 3. The points of the serrations may be turned in so as to penetrate the photograph &c.
Patent GB-362662-A (GB)
Title: Improvements relating to ironing machines
IPC: D06F61/08
Filed: 1930-12-01
Abstract: 362,662. Ironing-machines. TULLIS, D. K. and JACK, W., Kilbowie Iron Works, Clydebank. Dec. 1, 1930, No. 36101. [Class 138 (ii).] The rollers 1 and concave steam-heated beds 5 are concyclically arranged in upwardly convex arcs and, after leaving the last roller, the goods are passed between an endless band 8 and the lower faces of other steam chests 6 arranged in another arc as shown. When the goods return to the feeding side of the machine they are passed back to the delivery side between the lower flight of the endless band 8 and the upper flight of another endless band 9 the front portion 16 of which is used as the initia feed to the rollers 1. The gaps between the lower steam chests are bridged by perforated webs 14 which facilitate the drying of the goods. The end webs 15 also are perforated. The spur wheels 12 of the rollers 1 are driven by a common idler 13 of which the centre coincides with that of the arc 11 around which the centres of the rollers are arranged.