baber/WOPTO huggingface dataset:
Patent GB-1387004-A (GB)
Title: Transmissive semiconductor photocathode structure
IPC: H01J29/38
Filed: 1972-05-11
Abstract: 1387004 Cathode materials RCA CORPORATION 11 May 1972 [17 May 1971] 22029/72 Heading H1D A transmissive photo-cathode comprises a dielectric, monocrystalline substrate and successive epitaxial layers of Si or Ge, 2 to 3000 thick; an AIIIBv or CIIDvI compound at least 3Á thick; and an AIIIBv compound having a smaller energy band gap than the adjacent second layer compound and a thickness of 1-5Á. A cathode comprises a substrate of alpha-type Al2O3 or spinel; a Si layer; a 5Á, thick layer of GaP and a 1Á. thick layer of Zn doped GaAs. The second layer may be of Al, As, Zn, Se, A1P or GaAsP with a varying proportion of As and P. The layers are formed by vapour deposition from silane; trimethyl gallium and phosphine and GaCl2, arsene in H2. The substrate is first polished, washed and heated to 1200 C in H2. Between coatings the substrate is cleaned by heating in arsene in H2. and etching with bromine methanol. The cathode is sensitized with Ce and O. The cathode 17 is mounted in a proximity focused image tube adjacent a glass plate 18 supporting an Al coated phosphor layer 21. The envelope is evacuated via a tube 20. The photo-cathodes are also used in camera and photomultiplier tubes.
Patent GB-500624-A (GB)
Title: Improvements in and relating to railway and like wheels and rails for use therewith
IPC: B60B17/00
Filed: 1937-08-11
Abstract: 500,624. Railway wheels. TAYLOR, T. Aug. 11, 1937, No. 22106. [Class 144 (i)] To provide a large rail-engaging surface, the tread of a railway wheel is formed of concave section, substantially complementary tc the convexity of a standard rail 2, and with a circumferential groove G at the flange side.
Patent GB-431238-A (GB)
Title: Improvements relating to the cylinders of internal combustion engines
IPC: F02F1/10
Filed: 1934-07-28
Abstract: 431,238. Cylinders. GARDNER & SONS, Ltd., L., and GARDNER, J. H. S., Barton Hall Engine Works, Patricroft, Man. chester. July 28, 1934, No. 22122. [Class 7 (ii)] [See also Group XXVI] In a cylinder having a dry liner b which is an interference fit in the bore and abuts against the cylinder head, the abutment at the other end, comprises a flanged ring c which is screwed into the cylinder block and locked by a stud d, and is tapered at c<2> to form an entering guide for the piston-rings.
Patent GB-600517-A (GB)
Title: Improvements in or relating to arrangements for controlling the pitch-variation of coaxial screw propellers
IPC: B64C11/42
Filed: 1945-08-28
Abstract: 600,517. Variable-pitch propellers. COMPAGNIE GENERALE POUR L'EQUIPEMENT AERONAUTIQUE. Aug. 28, 1945, No. 22127. Convention date, Sept. 30, 1941. [Class 114] The pitch of the blades of two coaxial variable-pitch propellers driven from concentric driving shafts is controlled by coupling together at will sets of gearwheels driven from the shafts. The front propeller is driven by the shaft 1, on which is idly mounted concentric gear-wheel 7 having two rows of teeth engaging wheels 8 and 11. Rigidly attached to this shaft is a gear 6 driving a wheel 12. When pitch variation is required, this wheel is clutched electromagnetically to the wheel 11 and since this has slightly differing numbers of teeth gear 7 is rotated slowly relative to shaft 1, this driving wheel 8 to which is attached a worm rotating the propeller blade. The rear propeller blade is adjusted by a similar gear train 5, 13, 14, 9 and 10.
Patent GB-1489459-A (GB)
Title: Sewing machines
IPC: D05B65/00
Filed: 1975-05-22
Abstract: 1489459 Sewing-machine UNION SPECIAL CORP 22 May 1975 [31 May 1974] 22153/75 Heading DIG A thread cutter for a single thread blind stitch sewing machine comprises a pair of blades 70, 83 preferably mounted on the presser foot 66 and interconnected to cooperate in scissor fashion with both blades moving to cut a loop of thread held on a looper 32. The cutter is actuated through a wire 57 from a mechanical device 42, 43 or from a solenoid mounted on the machine remotely from the cutter. The blade 70 is linearly movable in a block 73 and movement thereof towards the looper causes the blade 83 to pivot against spring 91 force to cut the thread. The actuator of Fig. 6 is operated by a rod 55 from the foot treadle of the machine. The cutter can only be actuated when a stop plug 58 is aligned with a notch in a disc on the main drive shaft, this ensuring that the looper is in the correct position. The actuator of Fig. 6 may be replaced by a rotary solenoid actuator controlled electronically. Provision may be made to lower the work supporting structure pneumatically or manually by a knee press after cutting the thread to facilitate removal of the work and an auxiliary switch may allow such lowering at any time.
Patent GB-696072-A (GB)
Title: Improvements in or relating to liquid fuel burners
IPC: F23D11/28
Filed: 1950-09-08
Abstract: 696,072. Liquid fuel burners. BABCOCK & WILCOX, Ltd. Sept. 8, 1950 [Sept. 10, 1949], No. 22177/50. Class 75(i) In a mechanical atomizing, return flow, liquid fuel burner comprising a whirl chamber having inlet means adapted to whirl the fuel supplied therethrough to said chamber, a fuel discharge orifice, and means for returning fuel from the whirl chamber, either the surface of the whirl chamber rearwardly of an inlet zone thereof is hemispherical or substantially hemispherical, or a part of the whirl chamber rearwardly of an inlet zone thereof is rearwardly tapering and is frusto-conical in shape and includes a rearwardly convergent side wall and a flat or substantially flat rear wall, and in both forms an annular outlet passage extends coaxially from the whirl chamber rearwardly of the inlet zone and comprises an unobstructed annular slot terminating at the surface of the whirl chamber. Liquid fuel is delivered to an annular passage 20, Fig. 2, between coaxial pipes 21, 22 from which it passes through holes 26 in a plug member 23 to an annular slot 24 in the forward face of the latter, and thence through holes 38 in an apertured plate 40 to an annular slot 37, from which it is directed into a swirl chamber 35 through tangential slots 46 in an orifice plate 50, and discharged through the latter. Excess fuel is returned to an annular chamber 27 through a diverging annular passage 36 formed between a frusto-conical surface 53 on the plate 40 and a frusto-conical surface on a forward protuberance 28 of the plug 23, and passes thence through holes 29 to the return pipe 22. The rear wall of the swirl chamber is formed by a diverging frusto-conical surface 34 in the plate 40 leading to a cylindrical aperture 33 in the latter. The passage 36 is substantially normal to the surface 34 for utilization of the centrifugal force to assist the return flow. In the alternative construction the surface 34 and the forward face of the protuberance 28 are both spherically concave to form a whirl chamber having a substantially hemispherical rear portion. Specification 696,071 is referred to.
Patent GB-463607-A (GB)
Title: Improved construction of mowing machine
IPC: A01D34/08
Filed: 1936-08-12
Abstract: 463,607. Mowing - machines. ALLEN & SONS (OXFORD), Ltd., J., and ALLEN, J. J. C. Aug. 12, 1936, No. 22194. Addition to 424,079. [Class 6 (iii)] The forward extension of the frame 9 enclosing the worm shaft and carrying the cutting means described in the parent Specification is now made in the form of an oil-tight box 9<a> provided with a lid 43 and flattened at its forward end 9<b> to which is attached by bolts 37 a bar 11 carrying the fingers 38 and reciprocating knife-bar 22. A vertical shaft 39 is journalled in a bearing in the box 9<a> and at its upper end carries a spring lever 40 connected to and adapted to reciprocate the bar 22; the rear end of the lever extends backwards as a curved tail 40<a>. the movement of the lever and its tail throwing cut grass clear of the machine frame. The shaft 39 is rocked by the engagement of the pin of a crank 5<a> at the end of the worm shaft 5 in a die 42 sliding in a slot at the end of an arm 41 secured to the shaft. In a modification the reciprocating cutter is replaced by a rotary blade device. The box 9<a> is then fitted with ball bearings for a longitudinal shaft driving a transverse shaft through bevel gear such transverse shaft being provided with a sprocket wheel for transmitting motion to a sprocket wheel on the shaft of the rotary blades.
Patent GB-1457239-A (GB)
Title: Process for the preparation of butanediols
IPC: C07C29/00
Filed: 1975-05-22
Abstract: 1457239 Butanediols BAYER AG 22 May 1975 [22 June 1974 19 July 1974] 22264/75 Heading C2C In a process for the simultaneous preparation of butane-1, 4-diol, butane-1,2-diol and 2- methylpropane-1,3-diol in a first stage propylene, oxygen and acetic acid are reacted in the presence of a catalyst containing palladium to give allyl acetate and water, in a second stage the allyl acetate is catalytically converted with carbon monoxide and hydrogen into a mixture of 4 - acetoxybutan - 1 - ol, 2 - acetoxybutan - 1 - ol and 3 - acetoxy - 2 - methylpropan-1-ol, in a third stage this mixture is catalytically reacted with methanol to give butane - 1,4 - diol, butane - 1,2 - diol and 2- methylpropane - 1,3 - diol and methyl acetate, in a fourth stage the methyl acetate is reacted with water from the first stage in the presence of an acid cation exchanger to give methanol and acetic acid, and the methanol is returned to the third stage and the acetic acid to the first stage. Transition metal compounds are suitable catalysts for the second stage, and alkaline catalysts are suitable for the third stage. Fig. 1 is a flow sheet of an embodiment of the process. Propylene, oxygen and recycled acetic acid/water are fed via lines 5, 6 and 15 respectively to Stage 1; allyl acetate obtained is passed via 7 to Stage 2, and a stream essentially of water is passed via 16 to Stage 4. Allyl acetate is reacted in Stage 2 with hydrogen and carbon monoxide (via 8 and 9) to give acetoxybutanols which are fed, together with catalyst via 10, to Stage 3. Butanediols are removed from 3 by line 12, and methyl acetate passed via 13 to Stage 4, where it is hydrolysed with water introduced by 16; distillation gives a top product, methyl acetate and methanol, which is recycled to 3, and a bottom product, acetic acid and water, which is recycled to 1. An alternative more elaborate flow sheet for Stages 3 and 4 is given, in which also the diols obtained are separated from each other by distillation. The catalyst for Stage 2 may be prepared by reacting a cobalt compound with carbon monoxide and hydrogen in a solvent; acetoxybutyraldehydes are obtained as intermediates in Stage 2, and this stage may be carried out in two steps, the aldehydes being formed in the first step, and hydrogenated to acetoxybutanols, possibly with a different catalyst, in a second step. Further alkali may be added to the crude butanediols from Stage 3 after separation from methyl acetate, to carry the reaction to completion.
Patent GB-1317719-A (GB)
Title: Ultrasonic testing apparatus
IPC: G01N29/22
Filed: 1971-04-19
Abstract: 1317719 Valves DR J U H KRAUTKRAMER ELEKTROPHYSIK GES FUR 19 April 1971 [11 March 1970] 22271/71 Heading F2V ]Also in Division H4]  A probe 2 used for ultrasonic testing of sheet metal is disposed in a chamber 11 which receives water through ports 6, 7 and perforated plate 8 having flow control members 8b, 8c co-operable with the ports, the plate being adjustable at 8a. During each test sequence, valve plate 18 is raised clear of seat 16 to permit flow to nozzle 3. The valve plate is movably attached at 19 to an arm 17 mounted on the enlarged end 15 of a shaft 14 extending through sealing sleeve 13. The shaft is operated by arm 23 and cable 21 and, in general, a series of such devices can be arranged for operation by a solenoid device (28) through a common cable and pulley mechanism in response to the arrival of an article for testing. The valve plates can also be controlled individually by means detecting the width of the articles. Individual solenoids (30) can alternatively be mounted on each chamber to actuate each valve plate 18. The latter can include a projection 20 adapted to disperse air bubbles, and can act to sweep air bubbles from the probe 2.
Patent GB-376050-A (GB)
Title: Improvements in grinding discs for grinding the treads of wheel rims for rail vehicles and the like
IPC: B24D7/06
Filed: 1931-08-06
Abstract: 376,050. Grinding-wheels. DABRITZ, G., 27, Milinowskistrasse, Zehlendorf, and HANUS, E., 5, Friedrichstrasse, Hermsdorf, both in Berlin. Aug. 6, 1931, No. 22279. [Class 60.] A wheel for grinding the rims of rail vehicle wheels &c. consists of segments a held in position in a rim .s by one or more external wedges b<1>, and by an internal hollow split pin c engaging a roughened bore in the segment. The pin is screwed into the rim, Fig. 1, or provided with a rounded part c<1>, Fig. 4, pressed up to the rim by a nut i and an elastic washer h, and is opened to press an elastic ring d, carried by the pin, against the wall of the bore by a screw e. By loosening the screw, the segment may be adjusted axially to allow for wear, and is backed, in the adjusted position, by a distance piece g which is slotted to take over the pin. In a modification, Fig. 6, the segments lie at an angle to the axis of the wheel.
Patent GB-705617-A (GB)
Title: Improvements relating to the heating arrangements of hot water storage and supply vessels
IPC: F24H1/20
Filed: 1951-09-26
Abstract: 705,617. Heating water. DICKINSON, E., and RANGE BOILERS, Ltd. Dec. 10, 1952 [Sept. 26, 1951], No. 22512/51. Classes 64(1) and' 64(3) [Also in Group XI] In a hot-water storage cylinder a containing a tubular coil b, an annular chamber, or other hollow unit through which primary water, heated in an external solid-fuel boiler, is circulated continuously in a closed circuit to heat the water in the cylinder, a chamber e containing an electric immersion heater is provided in the storage cylinder and is connected at its top and bottom to the coil or other unit, so that the primary water can be heated by the external boiler or the immersion heater or both. The chamber e may be a vertical tube, or shaped as shown. The cylinder a contains an upper compartment j to which cold water is supplied to replace water drawn off.
Patent GB-281977-A (GB)
Title: A new or improved lock and protector for electric lamps
IPC: H01R33/97
Filed: 1927-08-29
Abstract: 281,977. Ashdown, H. E. Aug. 29, 1927. Holders. - In devices for preventing the removal of bulbs until the glass thereof is broken away, and of the kind wherein a ring e provided with projections k for closing the bayonet slots of the holder is maintained in engagement with the holder bv a spring l encircling the cap of the bulb, access to these parts being prevented by an enclosing sleeve b engaging at one end with the bulb and at the other with the shade ring n or other part of the holder, the sleeve b is made of insulating material and is provided internally at its upper part with ribs d adapted to key with notches in the ring e when this springs into the locking position.
Patent GB-790441-A (GB)
Title: Improvements in or relating to reflectors and electric fires
Inventor: BEGGS STANLEY SUTTON
IPC: F24C7/06
Filed: 1955-08-05
Abstract: 790,441. Electric fires; reflector stoves. GENERAL ELECTRIC CO., Ltd. July 13, 1956 [Aug. 5, 1955], No. 22674/55. Classes 39(3) and 126 An electric fire comprises heating elements 12 and a reflector 1 having four reflecting surfaces of which the two inner ones are inclined at an angle of between 191 to 192 degrees to each other and the outer ones 5, 6 with flanges 8, 9 are approximately perpendicular to the adjoining inner surfaces and blended to them by fillets 7. The reflector is supported by grooved castings 14, 15, extensions 14A, 15A of which carry a channel member 19 carrying supporting brackets 21, 22 for the heating elements, one of the brackets 22 being connected to the supply leads through a switch 20. A guard 24 consisting of rods 25 secured to transverse rods 26 engages casting 15 behind a lip 28, side panels are supported by the castings and a plane reflector 27 closes the lower end of reflector 1.
Patent GB-635933-A (GB)
Title: Shoulder pad
IPC: A41D27/26
Filed: 1947-08-15
Abstract: 635,933. Shoulder pads. CHNOUPEK, J., and CHNOUPKOVA, R. Aug. 15, 1947, No. 22728. Convention date, Feb. 13, 1946. [Class 141] A shoulder pad comprises two pieces of stiffened material 1, 1', preferably of triangular shape, and an insert 3, of wadding or similar material, of which the edge adjacent the shoulder seam is bent back under the upper piece 1, the fold projecting beyond the stiffened pieces. The layers are held together by stitches 2.
Patent GB-1461020-A (GB)
Title: Biguanides
IPC: C07C239/00
Filed: 1975-05-23
Abstract: 1461020 Cycloaliphatic biguanides BOEHRINGER MANNHEIM GmbH 23 May 1975 [1 June 1974] 22731/75 Heading C2C Novel compounds of formula wherein A is a saturated or unsaturated cycloaliphatic hydrocarbon and salts thereof are prepared by one of the following methods (a) a compound ACH 2 NH 2  is reacted with a compound where X is NH 2 , SH, pyrazolyl OR or SR where Y is H or X and Y are a valency bond, and R is benzyl or C 1-4  alkyl; (b) reaction of a compound with a urea where X 1  is as X except pyrazolyl and Y is as above; or (c) a compound of formula wherein X 1  and X 2  are as X 1  above with the proviso that only one X 1  or X 2  is NH 2  and X 2  and Y cannot form a valency bond, with ammonia or an ammonium salt. Cyclopent - 1 - en - 1 - ylmethylamine is obtained by action of SOCl 2  on 1-aminomethylcyclopentan-1-ol prepared by reduction of cyclopentanone cyanohydrin with LiAlH 4 . Cyclohept - 1 - en - 1 - ylmethylamine is similarly prepared from cycloheptanone cyanhydrin via 1-aminomethylcycloheptan-1-ol. Cyclohept - 2 - en - 1 - ylmethylamine is prepared by reduction of cyclohept-2-en-1-carbonitrile obtained from 3-bromocyclohept-1-ene and KCN. Pharmaceutical compositions in conventional forms for oral administration and having antidiabetic activity comprise an above novel compound and a carrier or diluent.
Patent GB-279040-A (GB)
Title: Improvements in or relating to optical apparatus
IPC: G03B41/12
Filed: 1927-08-30
Abstract: 279,040. Leventhal, J. F. Oct. 14, 1926, [Convention date]. Optical systems.-For the purpose of converting a stationary beam of light into a beam of light moving in a direction at rightangles to the direction of the beam or vice versa, two plane-parallel plates of glass are used inclined to the direction of the beam and have assicated therewith reflecting means situated between them. In one arrangement the plates 21, 23 are mounted coaxially on a shaft 22 and are inclined in opposite directions. Situated between them is a reflecting prism 24, as shown. The first plate 21 gives to the beam a rotary movement and the second plate 23 increases the movement in a plane containing the avis of the shaft and decreases in a plane at right-angles thereto, resulting in motion in a plane. In another arrangement a single inclined plate 31, Fig. 3, is used in conjunction with a prism 34 by which the beam is reflected and returned through the plate 31. In place of planeparallel plates two narrow-angled prisms having a parallel air space between them may be used for each plate. The Specification as open to inspection under Sect. 91 (3) (a) comprises also an arrangement of two plane-parallel plates 11, 13 mounted on coaxial shafts 12, 14 which are connected by bevel gearing 17. This subject-matter does not appear in the Specification as accepted.
Patent GB-1130835-A (GB)
Title: A nut and ferrule assembly for a flareless tube coupling
Inventor: SULLIVAN HOWARD LEROY
IPC: F16L19/10
Filed: 1967-05-17
Abstract: 1,130,835. Tube couplings. PARKERHANNIFIN, CORP. 17 May, 1967, No. 22835/67. Heading F2G. [Also in Division B3] In a coupling assembly comprising a body 1 having a tapered wall 10 and a nut 5 in screwed engagement with the body and having a shoulder 12, a metal sleeve 14 surrounding the tube has a relatively thin forward part 15 and a thickened intermediate part 21 initially in contact with the shoulder 12 at only the radially outermost part thereof and through which axial compression force is imposed during tightening of the nut to force the forward part of the sleeve into contact with the wall 10 and to contract that part into fluid-tight gripping engagement with a tube T during which there is substantially no deformation of the part 21. The sleeve is provided with an extension 24 which has a radial enlargement 34 to form a retaining shoulder 35 for holding the nut and sleeve together, and the nut through continued tightening is operative only after fluid-tight gripping engagement has been established to effect deformation of the part 21 to cause radial contraction of the sleeve in the region of the part 21 into vibration damping engagement with the tube, the nut advancing axially with respect to the shoulder 35 only during the deformation of the part 21 to provide a visual indication both that the fluid-tight engagement has been established and of the extent of fluid damping engagement of the sleeve with the tube. The sleeve may be formed with sharp corners 17, 18 which bite into the tube and a portion 19 of a taper angle less than that of the wall 10; initially, the wall of the sleeve in contact with the shoulder 12 of the nut is perpendicular to the axis of the sleeve.
Patent GB-297944-A (GB)
Title: Improvements in toy balloons
IPC: A63H27/10
Filed: 1927-08-31
Abstract: 297,944. Lockyer, H. F., and Anderson, R. U. Aug. 31, 1927. Inflatable balloons.- Relates to tov balloons of the kind wherein the neck b of the balloon is encircled by a cylindrical sleeve d, within which, after inflation, the neck is twisted to effect a closure, and consists in that the neck is passed through and turned back over a rigid ring c, between which and the sleeve d the end of the neck is clamped. The ring c forms a buttonshaped projection for use in attaching the balloon to clothing &c.
Patent GB-533297-A (GB)
Title: Improvements relating to apparatus for use in artificial respiration
IPC: A61M16/12
Filed: 1939-08-08
Abstract: 533,297. Artificial respiration apparatus. DAVIS, Sir, R. H. Aug. 8, 1939, No. 22920. [Class 81 (ii)]] Artificial respiration apparatus comprises an oxygen supply 2, a mouthpiece 4 to be used by a rescuer, a mask 1 to be applied over the patient's mouth and nose, conduit means connecting the mouthpiece to the oxygen supply on the one hand and to the mask on the other, and non-return valve 16, 20 which automatically cut off communication between the mask and mouthpiece during inhalation of oxygen through the latter by the rescuer, and cut off communication between mouthpiece and oxygen supply when the rescuer is exhaling and forcing an atmosphere rich in oxygen with the addition of some carbon dioxide into the lungs of the patient. The oxygen supply comprises a cylinder of compressed oxygen connected to the rest of the apparatus through a pressure reducing valve 12. A small reservoir in the form of an india-rubber bag 15 is provided to accommodate oxygen delivered from the cylinder during the intervals between successive inhalation phases of the rescuer. The mouthpiece 4 is preferably provided with a filter 5.