baber/WOPTO huggingface dataset:
Patent GB-622491-A (GB)
Title: Improvements in electronic amplifiers
IPC: H03F3/40
Filed: 1946-09-26
Abstract: 622,491. Valve amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd., and MACKENZIE, T. H. Sept. 26, 1946, No. 28799. [Class 40 (vi)] In a D.C. amplifier of the type wherein the input is used to modulate the input to an A.C. amplifier, the output being de-modulated, a fraction of the D.C. output is fed back in a negative sense into the D.C. input. A D.C. potential applied to resistor 2, Fig. 1, is supplied together with a feedback potential over resistor 9, to the upper contact of a switch 5 reversing at a rate of 50 times per second. The alternating component is fed to the grid of valve 4 over a blocking capacitor, an amplified and reversed output appearing at the anode. This potential is fed over capacitor 15 to a switch 14 operated synchronously with switch 5. The capacitor 11 assumes a steady potential, an amplified and inverted potential appearing across the output load 12. A fraction of the output potential is tapped off over the network 7, 8 and is applied over resistor 9 to reduce the effective input to the valve 4. In a modification, Fig. 3, the output load is in the cathode lead of valve 10 and is applied to the lower contact of switch 5. The effective capacity of capacitor 11 may be increased by connecting it between grid and anode, Fig. 4 (not shown), or between grid and earth, Fig. 5 (not shown), as appropriate. In a further modification, Fig. 6 (not shown), the switch 5, Fig. 1, is arranged to short the junction of resistors 2 and 9 to earth. In a further modification, Fig. 7 (not shown), the switch 14 is replaced by a non-linear resistor, a source of high frequency being switched to supply energy to the resistor in synchronism with the operation of switch 5. Specification 472,951 is referred to.
Patent GB-947134-A (GB)
Title: Improvements in or relating to combustion chambers of gas turbines
Inventor: JEMELKA JIRI
IPC: F23R3/04
Filed: 1962-07-26
Abstract: 947,134. Gas turbine combustion chambers. PRVNI BRNENSKA STROJIRNA ZAVODY KLEMENTA GOTTWALDA NARODNI PODNIK. July 26, 1962, No. 28838/62. Heading F1L. A combustion chamber for a gas turbine engine comprises a cylindrical shell surrounding a flame tube, a burner, a mixing device and a radially directed air entry aperture to the chamber having a helical partition dividing the air stream into upstream and downstream flows. A cylindrical shell 1 surrounds a flame tube 7 having a burner 9 and an air/gas mixing device 8. A helical partition 4 divides the air stream entering the shell 1 from the aperture 2 into an upstream flow into annular space 5 to cool the flame tube wall and a downstream flow into annular space 6 and mixing device 8. An adjustable vane 3 varies the proportions of air entering spaces 5 and 6.
Patent GB-683816-A (GB)
Title: Improvements in or relating to building blocks
IPC: E04B2/02
Filed: 1949-11-11
Abstract: 683,816. Building-blocks. EECON CONSTRUCTION CO., Ltd., and SHARPLES, A. G. Nov. 2, 1950 [Nov. 11, 1949]. No. 28918/49. Class 87 (i). A n apertured building - block is formed with grooves 10a in its faces in line with the faces of the webs W and with the inner faces 12 of the block walls to facilitate the formation of ¥, ¢ and “ blocks by breaking away parts of the block. Additional keying grooves 10, preferably shallower, are provided for the attachment of a facing as described in Specification 595,232. The block may be square in elevation.
Patent GB-248454-A (GB)
Title: Improvements in body or abdominal belts
IPC: A61F5/03
Filed: 1924-12-03
Abstract: 248,454. Pitcan, W. I. Dec. 3, 1024. Abdominal belts.-An abdominal or body belt is formed of three sections of inelastic material. a back section a' and front sections a<2>, a<3>. The sections a<2> and a<3> are secured to the section a<1> by lacing e .and the sections a<2>, a<3> are connected by buckles c and long straps d. Long flaps b provided on the sections a<1>, a<2> and equal in depth to the depth of the belt are arranged to underlie the three fastenings and to bridge any gap which may exist between adjacent sections when the belt is expanded. Stiffeners f and ventilation holes 9 may be provided.
Patent GB-201463-A (GB)
Title: Improvements in or relating to the manufacture of vessels and containers of paper
IPC: D21H23/42
Filed: 1922-10-25
Abstract: 201,463. Hydroloid, Ltd., (Exportingenieure f³r Papier und Zellstofftechnik Ges.). Oct. 25, 1922. Materials, special, for bags.-Vessels and containers such as paper bags, drinking vessels and plates are formed of paper which is either previously or subsequently treated with sizing material such as animal size, casein or albumen, then passed between pressure rollers either in the sizing material or subsequently, and is also treated with alum, chrome salts, formalin &c. to harden the size and render it insoluble in water, the hardening material being mixed with the sizing material or used after the sizing. Acids, such as lactic acid, or alkalis, such as caustic soda, may be added to the size. The paper may be allowed to stand in a wet state both before and after hardening, and may be cooled by a current of cold air prior to drying on skeleton drums by warm air. Glycerine or an easily emulsifiable material such as soap or castor oil may be employed to toughen the treated paper, and a coat of transparent varnish may be applied to impart flexibility to the paper.
Patent GB-1099098-A (GB)
Title: Improvements in or relating to the manufacture of semiconductor layers
IPC: C30B33/00
Filed: 1966-06-29
Abstract: <PICT:1099098/C6-C7/1> A layer of a first semi-conducting material is deposited epitaxially from the gaseous phase on to a monocrystalline semi-conducting substrate of a second semi-conducting material having the same lattice structure as the first material, but comprising constituent atoms of different valency to those of the first material, at least the edges of the substrate being masked. As shown a crystal 11 of Ge is masked by a cup-shaped housing 14 with a window 15 and having a lid 16, the housing and lid being made, e.g. of Al2O3 carbon or quartz. A crystal 13 of the material to be deposited, e.g. GaAs, rests on a heater 18, the entire arrangement being enclosed in a quartz reaction vessel 20. Reaction gas, which may be a mixture of water vapour and hydrogen, is introduced at 21, the latter constituent preventing oxidation of the Ge surface.  The heated GaAs surface reacts with the gas, producing Ga2O and As both in the gaseous state, and a layer of GaAs is consequently deposited epitaxially on the substrate 11 within the window 15.  Alternative materials include GaP as the substrate material and ZnS as the deposited material. In this case the reaction gas comprises iodine and hydrogen.  An alternative apparatus is described in which substrate crystals (37), Fig. 3 (not shown), of Si are each enclosed in an oxide coating (38), apart from a window (39).  GaAs in powder form (40) is placed in the reaction vessel (30), which in turn is placed in a furnace (31) arranged so that a specific temperature difference may be set between the powder (40) and the crystals (37). The reaction gas, comprising a mixture of water vapour and hydrogen, flows firstly over the GaAs powder and then over the Si crystals, causing an epitaxial layer of GaAs to be deposited on the crystals within the windows (39).  In a further process described, the reaction gas includes a gaseous compound of the semi-conductor to be deposited.  In this case no supply of the deposited material is required in the reaction vessel, the substrate crystals being heated, e.g. by being placed on a heated support or by induction. In this way Ge, provided in oxide form in the reaction gas, may be deposited on GaAs or GaP crystals. The substrate and deposited materials may be of the same or different conductivity types.  In a further modification, germanium iodide is decomposed pyrolytically to deposit Ge.
Patent GB-1466667-A (GB)
Title: Tube for supportinga golf club within a golf bag and a collar for such a tube
IPC: A63B55/00
Filed: 1973-06-20
Abstract: 1466667 Golf tube and collar D J WHITE 19 April 1974 [20 June 1973] 29281/73 Heading A6D A tube 11 for insertion into a golf-bag to receive and protect an individual club is fitted with, or manufactured so as to incorporate a collar 10 e.g. of plastics material at its end to help prevent accidental withdrawal of the tube from the bag, said collar comprising an annulus 12 having on its external surface a number of projections 14 that are intended to interlock with similar projections on other such tubes in the bag. In the case of the separate collar, an internal surface of two parts 20 and 21 is dimensioned to provide a sliding or force fit onto the tube as far as the shoulder 22. The collar may be glued onto the tube. The projections are preferably circumferential flanges, four to six in number being thought optimum.
Patent GB-166843-A (GB)
Title: Superfluous hair remover
IPC: A61Q9/04
Filed: 1920-10-18
Abstract: A block which when wetted with hot water is rubbed on the skin to remove superfluous hair consists of 73 parts of kaolin, 29 parts of finely ground silica, and 1 part of plaster of paris, moulded and lightly fired.
Patent GB-919356-A (GB)
Title: Improvements in apparatus for manipulating capsules to be located in an irradiation channel of a nuclear reactor
IPC: G21F7/005
Filed: 1959-08-28
Abstract: 919,356. Handling radio-active material. COMMISSARIAT A L'ENERGIE ATOMIQUE. Aug. 28, 1959 [Aug. 30, 1958], No. 29510/59. Class 39 (4). Apparatus for handling irradiated samples positioned in a horizontal channel in the core of a reactor comprises a graphite brick 1 having cavities 2 for receiving capsules 3 containing the samples to be irradiated, the brick 1 being connected to a steel plug 4. During the irradiation process the brick 1 and plug 4 are situated in the reactor channel (not shown) and the end of the channel is blocked by a concrete plug. In order to remove or insert the cap. sules or change their position within the channel the concrete plug is removed and a block B is mounted adjacent the channel entrance so that its passage C is in alignment with the channel. The passage C contains a slider 5 movable by a handle 15 through a gear-box 16 whilst the block B has a capsule loading pipe 7, an unloading pipe 6 and a capsule transfer box 8, the pipe 6 and box 8 being maintained under a reduced pressure. Each cavity 2 has a hole 11 containing a rod 12 controlled by a flexible cable 13 operated by a button 19 whereby a selected capsule 3 may be lifted by operation of the corresponding button; alternatively all the capsules 3 may be lifted simultaneously by operation of a plate 20. To unload a capsule the slider 5 is moved into the reactor channel and plug 4 and brick 1 are positioned thereon by a hand tool, the slider then being withdrawn into the block B until the selected capsule is opposite the unload pipe 6, whereupon the capsule is lifted by operation of the appropriate button 19 and the capsule is sucked up the pipe. To load a capsule, a cavity 2 is positioned beneath pipe 7 and the capsule is pneumatically projected thereinto. To transfer a capsule it is positioned beneath a cavity 9 in the box 8 and lifted by a button 19 and the reduced pressure into the cavity, the brick 1 is moved and the capsule then allowed to drop into another cavity 2 by adjusting the pressure in pipe 10. Since the cavities 9 are positioned relatively to one another similarly to the cavities 2 all the capsules may be simultaneously transferred by the same amount in the brick. The position of the slider 5 may be determined by an index 17 and scale 18.
Patent GB-200431-A (GB)
Title: Improvements in and relating to electric motor controllers
IPC: H02P1/46
Filed: 1922-10-30
Abstract: 200,431. Igranic Electric Co., Ltd., (Cutler-Hammer Manufacturing Co.). Oct. 30, 1922. Systems for alternating-current only. - Synchronous motors are started on reduced voltage and are automatically switched over to full voltage by a device subject to a voltage which is a function of the speed of the motor. In the arrangement shown, a synchronous motor A having a field winding F is started by closing a push button switch 11, which through a relay 8 effects the closure of a starting switch 1 connecting the motor to compensator windings 2, 3. The alternating current initially induced in the field F produces sufficient voltage across the terminals of an impedance coil L to open two relays 6, 7. The relay 6 is calibrated to close when the motor reaches an intermediate speed, thereby effecting the closure of a running switch 4 and the opening of the starting switch. The relay 7 is calibrated to close at or near synchronous speed, so as to connect the field to a battery B and cut out the impedance coil L.
Patent GB-1474549-A (GB)
Title: Vehicle suspension assembly
IPC: B60G15/07
Filed: 1974-07-04
Abstract: 1474549 Strut-type suspensions VOLKSWAGENWERK AG 4 July 1974 ]4 July 1973] 29633/74 Heading B7D A strut-type vehicle suspension assembly is arranged so that in the normal rest position the angle α F  of the axis of the strut 3 to the vertical, the angle α L  of a transverse link 6 to the horizontal, the vertical distances l, h of the connection A between the link and strut, from the connection B of the strut to the vehicle body and from the ground contact point S of the wheel 1 respectively, the transverse rigidity C Ry  of the type at the point S, and the effective rigidity C By  at the point B and determined mainly by the bending resistance of the piston rod 5 of the strut, give a value of less than 0À075 for a steering disturbance factor defined by:- This reduces camber changes as the wheel moves up and down so that gyroscopic effects do not produce undesirable steering movements. The steering disturbance factor may be reduced to zero by making the strut vertical and the link horizontal, or by making the strut vertical and arranging the values C Ry  and C By  in the same ratio as the dimensions l and h.
Patent GB-1006140-A (GB)
Title: Magnetic recording medium
Inventor: BISSCHOPS JOHAN HEINRICH
IPC: G11B5/702
Filed: 1963-07-26
Abstract: 1,006,140. Magnetic recording member. GEVAERT PHOTO - PRODUCTEN N.V. July 26, 1963, No. 29730/63. Addition to 991,676. Heading H1H. The latent polyisocyanate of the parent Specification is replaced by a polycarboxylic acid azide which, on heating, yields a polyisocyanate. Specification 969,150 also is referred to.
Patent GB-931295-A (GB)
Title: Steroid compounds
IPC: C07J75/00
Filed: 1959-09-01
Abstract: The invention comprises steroids of the general formulae <FORM:0931295/IV(a)/1> wherein R represents a hydrogen atom or an acyl radical and Q represents the divalent radical of a nitrogenous ketone-protecting reagent such as hydroxylamine, semicarbazide, hydrazine or a substituted hydrazine, and the preparation of the above 11-keto compound by treating 3a -(hydroxy or acyloxy)-16(a - or b -) methyl-17a -hydroxy-11,20-diketo-pregnane with the required nitrogenous ketone-protecting reagent in a buffered medium, and the preparation of the above 11b -hydroxy compounds by reducing the above 11-keto compounds with an alkali metal borohydride (a 3-acyloxy group hydrolysed in the latter process may be reacylated).  Specifications 877,085, 906,443 and 931,296 are referred to.
Patent GB-693094-A (GB)
Title: Stopper pull
IPC: B65D39/16
Filed: 1951-12-20
Abstract: 693,094. Stoppers. OFTEDAHL, J. Dec. 20, 1951, No. 29885/51. Class 125(iii). A stopper 2 of cork or other compressible material has a withdrawal device 5 consisting of a pair of wires twisted together with a filler of fibres squeezed between, the twisted wire being doubled on itself to form a loop and the ends 6, 7 of which are inserted in the stopper and adhesively bonded thereto. The ends may be adjacent each other or spaced apart. In a modification one end only is inserted into the stopper.
Patent GB-684801-A (GB)
Title: Preparation of 3-carbamyl-pyridinium salts
IPC: C07D213/82
Filed: 1950-12-06
Abstract: 3-Carbamyl-pyridinium salts of the formula <FORM:0684801/IV (b)/1> where R is a substituted or unsubstituted aliphatic, aromatic or araliphatic group and X is a halogen atom are prepared by reacting a 3-carbamyl-N-(2,4-dinitrophenyl)-pyridinium halide with a primary amine in an inert organic solvent.  The solvent is preferably a lower aliphatic alcohol with or without water, and the product is isolated from the solution obtained by adding a non-polar liquid, e.g. a lower aliphatic ether.  In examples, the following compounds are prepared by the reaction of 3-carbamyl-N-(2,4-dinitrophenyl)-pyridinium chloride with the appropriate amine, namely: (1) and (2) 3-carbamyl-N-benzyl-pyridinium chloride from benzylamine; (3) 3-carbamyl-N-phenyl-pyridinium chloride from aniline; (4) 3-carbamyl-N-(41-methoxystilbyl)-pyridinium chloride from 41-methoxystilbylamine; (5) 3 - carbamyl - N - (41 - ethoxystilbyl) - pyridinium chloride from 41-ethoxystilbylamine; (6) 3-carbamyl-N-cholesteryl-pyridinium chloride from 7-cholesterylamine; (7) 3-carbamyl-N-oestrylpyridinium chloride from oestramine; (8) 3-carbamyl-N-(41-sulphonamidobenzyl)-pyridinium chloride from 4-sulphonamido-benzylamine and (9) 3-carbamyl-N-desacetylcolchicine-pyridinium chloride from desacetylcolchicine.  3-Carbamyl - N - (2,4 - dinitrophenyl) - pyridinium chloride is prepared by heating together nicotinamide and 2,4-dinitrochlorobenzene.
Patent GB-299312-A (GB)
Abstract: 299,312. Heller, J. Oct. 22, 1927, [Convention date]. Hulling, husking, and decorticating; scouring and polishing.-Grain and similar seeds are polished, ground, or husked by confining them in channel cells, one wall of each cell being formed by the effective surface of the grinding or polishing member, such surface being provided with a groove to force the grains from the inlet to the outlet. In Figs. 1 and 2 a hopper 2 is disposed over a grinding or polishing disc 1 and the lower end of the hopper leads into radial channel-like cells 3 formed by partitions and provided with tops. The disc 1, which is grooved spirally forms the base of these cells. The tops of the cells may be loose and pressed downwards by springs. A number of hoppers with cells may be arranged over one grinding disc. In a modification the walls of the cells are inclined so that the grains are forced against one side owing to the rotation of the grinding disc. An internally or externally grinding cylinder may be substituted for the disc, a helical guiding groove being formed in its surface. Suction devices may be arranged to remove husks and to ensure airing of the grain. The Specification as open to inspection under Sect. 91 (3) (a) states also that,concentric grooves may be formed in the grinding surface. This subject-matter does not appear in the Specification as accepted.
Patent GB-461707-A (GB)
Title: Improvements in or relating to bye-pass valves for oil coolers
IPC: F01M5/00
Filed: 1935-10-30
Abstract: 461,707. Valves. ELLOR, J. E. Oct. 30, 1935, No. 29962. [Class 135] [Also in Group XIII] A valve device for controlling the byepass of an engine oil cooler has two passage-ways each controlled by a valve member one of the valve members being controlled by a thermostatic device while the other is opened by the oil pressure acting against resilient means. The valves and passage-ways are so arranged that the thermostatic control will not affect the pressure-actuated valve nor will the oil pressure substantially affect the thermally controlled valve. In the form shown in the Figure a tubular valve seat member C is inserted in the byepass passage and has apertures C<1> in its side walls adapted to be controlled by a reciprocating valve member H. This valve member has a sleeve part G<1> adapted to be secured by a nut G<2> to a rod G secured to a thermal capsule F adjustably secured to the casing by a screwed tail carrying a nut F<3> clamped against the end of the casing by a cap F2. The periphery of the member H is chamfered to correspond with a similar chamfer on the seat and is provided with large holes H<1> so that fluid pressure acts on both sides substantially balancing the valve when open and completely when closed. The pressure relieving valve comprises a disc D loaded by a spring D<1> and guided to seat on the end of the seat member by a ported flange engaging the outside of the seat. Centrally the disc has an aperture fitted with a soft metal washer J adapted to engage slidably with the sleeve G<1> According to the Provisional Specification the two valves may be arranged in separate conduits.
Patent GB-1187475-A (GB)
Title: Tyre Building Apparatus
Inventor: IKEJIMA KATSUMI
IPC: B29D30/28
Filed: 1967-06-29
Abstract: 1,187,475. Building tyres. DUNLOP CO. Ltd. 29 June, 1967 [30 June, 1966], No. 30062/67. Heading B7C. A " flat-band " bead stitching mechanism comprises guide rollers 35, 36 supporting the band 48, driven roller 30 movable to permit a band to be fitted and removed, and a pair of stitching rollers 47 mounted to rotate on inclined axes so that they move axially apart, due to rotation of the band, as far as the beads 52, to consolidate the plies, or chafers wrapped therearound. The rollers 47 are each carried by a block 39 slidable axially on bar 38 and urged towards each other and stops 40 by a spring 41.
Patent GB-1120277-A (GB)
Title: Preparation of aldehydes by the oxo process
Inventor: HULL DAVID CARLOCK
IPC: C07C45/50
Filed: 1965-07-16
Abstract: Aldehydes are prepared by reacting a mixture of an olefine gas or vapour, carbon monoxide and hydrogen in the presence of a cobalt oxo catalyst soluble in the products.  The concentration of the olefine in the mixture to be reacted is from 5 to 20% by volume, and ethyene, if present in the mixture containing an olefine with 3 or 4 C atoms, is in an amount less than 5%, and the temperature of the reaction is at least 75 DEG  C., and the pressure of the mixture at least 40 atmospheres.  The process is preferably continuous and cobalt oxide on kieselguhr or silica gel is the preferred catalyst.  Examples describe the reaction of propylene to form butyraldehyde; of a mixture of propylene and ethylene to form propionaldehyde and n- and is obutyraldehyde; and of ethylene, propylene and butene-1 to form propionaldehyde, n- and iso - butyraldehyde, n - valeraldehyde and 2 - methylbutyraldehyde.
Patent GB-519486-A (GB)
Title: Improvements in or relating to audio frequency repeating and amplifying systems
IPC: H03G5/06
Filed: 1938-10-19
Abstract: 519,486. Valve amplifying circuits. CHART, F. J. Oct. 19, 1938, No. 30269. Convention date, Nov. 23, 1937. [Class 40 (v)] In an audio-frequency amplifier an attenuation control valve V2 is connected as a variable capacity included between the grid and cathode of the input stage of an amplifier V. A channel including a high-pass filter, an auxiliary amplifier, and a rectifier, and means including a low-pass filter derives a voltage which is applied to the control valve V2 so that its effective input capacity is so controlled as to increase with decrease in the strength of the higher audiofrequencies fed to the amplifier. The Figure shows an amplifying valve V1 fed from the input through a high-pass filter C2, R3, a further high-pass filter C5, R13 applies the output to a diode to which a delay voltage is applied. The voltage across the diode load resistance R13 is applied to the grid of the control valve V2 over low-pass filter LP. The input to the amplifying valve is applied through potentiometer R1 through resistance R2 which is in series with the variable capacity consisting of the control valve V2. A switch S may be provided to render the attenuation control inoperative.
Patent GB-1198160-A (GB)
Title: A Method of Refining 2,6-Xylenol
Inventor: MOSTECKY JIRI
IPC: C07C37/84
Filed: 1968-06-25
Abstract: 1,198,160. Refining 2,6-xylenol. CHEMOPETROL ZAVODY PRO ZPRACOVANI ROPY A UHIK. 25 June, 1968 [27 June, 1967], No. 30292/68. Heading C2C. 2,6-Xylenol is purified by a partial fusion or partial solidification process in which the impure product is kept at a temperature of from 0.02‹ to 20‹ C. lower than its melting point. The impurities then accumulate in the liquid portion of the product. Examples are given.