baber/WOPTO huggingface dataset:
Patent GB-652703-A (GB)
Title: Improvements in or relating to amplifier circuit arrangements
Inventor: COOPER VICTOR JAMES
IPC: H04N5/20
Filed: 1948-03-25
Abstract: 652,703. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 25, 1948, No. 8871. [Class 40 (iii)] [Also in Group XL (c)] The ratio of synchronizing to picture signal is increased by feeding the composite signal to the cathode of valve 6 biassed to conduct only during the negative-going synchronizing signals S so that an amplified version appears across resistor 5. The magnitude of the amplification may be varied by adjusting resistor 5. The circuit may be fed from a cathode follower, Fig. 2 (not shown).
Patent GB-189711-A (GB)
Title: Improvements in detachable heel pads for boots, shoes and the like
IPC: A43B21/39
Filed: 1922-03-28
Abstract: 189,711. Kr÷ldrup, C. G. March 28, 1922. Protectors, securing; studs, detachably applied. - A heel pad consists of a part fixed to the heel comprising a framework 1 of leather or other material on which is fixed an apertured metal plate 2 having a flange 3 and teeth 4 which engage the frame 1, and a detachable part comprising a tread 6, intermediate portion 7, and a metal cap 8, which has teeth 9 engaging the part 6 and is adapted to be sprung into the aperture in the plate 2. The plate 2 and cap 8 have extensions 12, 11 respectively between which a tool may be forced to detach the tread. The tread may comprise several small parts fastened in a similar manner.
Patent GB-1092132-A (GB)
Title: Preparation of organohalosilanes
IPC: C07F7/12
Filed: 1965-03-02
Abstract: Organohalosilanes are selectively prepared by incrementally adding to a silicon compound of formula R1aSiX4- a wherein each R1 may individually be hydrocarbyl, hydrocarbyloxy or H; X is halogen and a is 0, 1 or 2, a mixed metal compound of formula AMRn, wherein A is Li, Na or K; M is Al, B or Zn and each individual R is as R1 or may be halogen, at least one R being alkyl, aryl or alkaryl, and n is an integer exceeding the valence of M by one, while maintaining a reaction temperature from - 20 DEG  C. to + 50 DEG  C., the amount of mixed metal compound used being one mole per mole of Si compound for each desired unit reduction in (4-a), but being insufficient to replace all the halogens in the Si compound. Long lists of suitable Si and metal starting compounds are given. Reaction is suitably effected in a solvent at 10 DEG  C., and the product recovered by distillation either of the solvent or the product.  Yields may be 95% quantitative.
Patent GB-817748-A (GB)
Title: Process for the production of guanidine and derivatives thereof
Inventor: ROBERTS ELWYN
Filed: 1949-04-01
Abstract: Urea is heated with a dialkyl sulphate, preferably in the absence of water or alkali and the resulting alkyl isourea alkyl hydrogen sulphate is reacted with ammonia, preferably at a temperature not exceeding 65 DEG  C. to form a guanidinium alkyl sulphate.  Gaseous or aqueous ammonia may be used, water, alcohol and excess ammonia being driven off by heat to leave a guanidinium alkyl sulphate from which an alcoholic solution of the sulphate with an alkali metal alcoholate and filtering.  Salts, e.g. the nitrate, may be obtained by adding an acid to the filtrate. Nitroguanidine may be obtained by nitrating the guanidinium alkyl sulphate, or by hydrolysing the latter salt, removing the alcohol and water and nitrating the guanidinium hydrogen sulphate.
Patent GB-1272730-A (GB)
Title: Improvements in packaging methods
Inventor: GRAVES KENNETH JOHN GAUNT
IPC: B65B61/22
Filed: 1971-04-08
Abstract: 1,272,730. Packaging in foamed plastics. BOWATER PACKAGING Ltd. 8 April, 1971, No. 9074/71. Addition to 1,144,657. Heading B8C. In a method of packaging in which the space between an inner container 2 and an outer container 4 is filled with a foamable plastics material 11 which is then allowed to set, the inner container 2 is maintained by spacers 7, 8 at a constant separation from the outer container 4 which is marked at 12 to indicate the position of one face of the inner container 2. When the package is to be opened, the outer container 4 and the plastics material 11 are cut along the line 12 to expose the inner container 2. The spacers 7, 8 are of polyurethane foam and are disposed between the bases, tops, and side-walls of the two containers. The top of the inner container 2 is covered by a polyethylene sheet 3 and the outer container 4 is closed by flaps 6. During foaming, the outer container is supported against deformation in a mould (5, Fig. 1).
Patent GB-369746-A (GB)
Title: Combination valve adapted to prevent the unauthorised use of motor vehicles
IPC: B60R25/042
Filed: 1931-03-25
Abstract: 369,746. Combination lock valve. THOMPSON, J., Spon Lane, Grendon, Atherstone, Warwickshire. March 25, 1931, No. 9086. [Class 135.] A combination petrol &c. valve, particularly for preventing unauthorized use of motor vehicles, c o m - prises a series of superposed apertured discs e, f, g with coaxial spindles rotated by superposed external opeia. ting discs n, o, p with pointers to enable a prearranged combination to be selected in conjunction with an index ring m. The seating aperture d formed on the valve casing is arranged out of line with the outlet nipple b. The valve discs are held together by an internal spring q which also compresses packing s to prevent leakage along the spindle. The head of the casing screws up against packing t and is notched so that the assembly is locked by a ring l placed on the inlet nipple c before the pipe union is attached.
Patent GB-472657-A (GB)
Title: Improvements in mattresses for lying or reclining upon
IPC: A47C23/30
Filed: 1936-03-27
Abstract: 472,657. Spring mattresses. HENDERSON, A. March 27, 1936, No. 9127. [Class 52 (iv)] The upper surface of a mattress is supported by struts or springs 9 from a flexible foundation with underlying transverse tension springs 12 and auxiliary tension springs 13 which support selected parts of the foundation. Transverse tension springs 10 may be used in the upper surface with a second series of such springs 11 stretched therebeneath to give auxiliary support. A vertically adjustable central supporting bar 17 may be placed below the foundation. The springs can be connected to the frame by hooks engaging stitches 24, Fig. 6, between two plies of fabric 23 tacked to the frame.
Patent GB-948986-A (GB)
Title: Improvements in or relating to fuel cells
IPC: H01M8/08
Filed: 1962-03-09
Abstract: 948,986. Fuel cells. ALLIS-CHALMERS MANUFACTURING CO. March 9, 1962 [March 20, 1961], No. 9253/62. Drawings to Specification. Heading H1B. A fuel cell utilizing non-toxic reagents comprises an aqueous electrolyte of sodium or potassium carbonate or bicarbonate hydrogen peroxide as the oxidant and glycerol as the fuel. The fuel and oxidant electrodes may be as disclosed in Specifications 948,984 and 948,985.
Patent GB-1003681-A (GB)
Title: Androstane and androstene derivatives
Inventor: DAVIS MICHAEL
IPC: C07J75/00
Filed: 1962-03-09
Abstract: The invention comprises compounds of formula <FORM:1003681/C2/1> wherein R1 is an alkyl, alkenyl or aralkyl group, R2, R3, R4 and R5 are alkyl, aralkyl or cycloalkyl groups or R2 and R3 and/or R4 and R5 complete a saturated mononuclear 5, 6 or 7 membered heterocyclic ring, which may include oxygen or nitrogen as a second hetero-atom, a second nitrogen atom being optionally acyl- or alkoxycarbonyl-substituted, at least one of the groups -NR2R3 and -NR4R5 being a heterocycle as defined above, T1 is a hydrogen atom T2 and T3 are hydrogen atoms or in combination an additional bond, and X is a pharmaceutically acceptable anion, and their preparation by quaternization, or by conversion of one quaternary salt to another. 3,17 - tertiary amino - starting materials are prepared by (a) reductive amination of a corresponding keto-compound; (b) reaction of a reactive ester group with an amine; (c) reduction of an acylamino group; (d) reduction of an imine; (e) reaction of a primary amino group with an alkylene di (reactive ester); (f) formation and reduction of an enamine; (g) reduction of an azide, oxime, or phenylhydrazine, followed by alkylation if necessary; (h) Hofmann, Curtius or Schmidt degradation of a carboxylic acid; and (i) hydrolysis or reduction of an isocyanato group, followed by alkylation of the primary amine obtained.  3 - or 17 - mono - tertiary - amino compounds are prepared by any of the methods specified above, with, in addition, (a) oxidation of a 3-ol to a 3-ketone; (b) 3 - to mesylation or tosylation or 17-mesylation of 3- or 17-hydroxy compounds; or (c) hydrogenation of a 5/6 double bond. 17a  - azido - 3a  - pyrrolidino - 5a  - androstone is prepared by reaction of 17b -mesyloxy-3a  - pyrrolidino - androstene with sodium azide.  3b ,17b  - dimesyloxy - 5a  - androstane is prepared by reaction of the corresponding diol with methane sulphonyl chloride. The compounds of the invention have neuromuscular-blocking activity and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for parenteral administration, such as injectable solutions or suspensions, or ampoules.
Patent GB-946474-A (GB)
Title: Improvements in electrically conductive sealing rings
Inventor: SLINGSBY THOMAS JOHN LESLIE
IPC: F16J15/02
Filed: 1961-03-14
Abstract: 946,474. Joint-making and stuffing-box packing. WALTER SLINGSBY & CO. Ltd. May 4, 1962 [March 14, 1961], No. 9265/61. Heading F2B. A rubber &c. sealing ring 10 has at least one electrically conductor and element 14, 15, 16, each comprising a deformable wire staple, the limbs of which are forced through the ring wall 11 until the web abuts the surface 13 and the limbs are then folded down on to the surface 12.
Patent GB-936509-A (GB)
Title: Textile double-twist twisting device
IPC: D01H1/42
Filed: 1961-03-14
Abstract: 936,509. Restricting thread balloons. BARMER MASCHINENFABRIK A.G. March 14, 1961 [March 18, 1960], No. 9349/61. Class 120(2). In a textile double-twisting device having a casing for restricting the thread balloon, the air adjacent the balloon is urged in the direction of balloon travel and/or towards the outlet of the thread from the casing. To this end air currents provided by the driving belt and spindle, or by an externally driven propeller or, as shown by vanes 16 on the wharve, are caused to flow upwardly through the casing 15 and are guided by a helical rib 14 (or by grooves or vanes on the inside of the casing) to urge the balloon thread along its direction of motion and so diminish its tension. Alternatively, compressed air may be blown tangentially into the interior of the casing. The casing may be split into two parts to facilitate servicing.
Patent GB-169413-A (GB)
Title: A revolvable clothes drying reel usable also as a tent frame
IPC: D06F57/04
Filed: 1921-03-29
Abstract: 169,413. Coulter, W. J. March 29, 1921. Clothes frames.-For raising and lowering the lifting member 11 of a clothes-drying reel or of a tent frame of the umbrella type, the lever 20 supported on the pivot 22 is employed. The lever is connected by the link 23 to the lifting-member, which is guided in its movement by the screweyes 10. A stop-piece 26 may be secured to the pillar 6 to support the lifting-member and its arms when in the lowered position, Fig. 2. 14
Patent GB-316332-A (GB)
Title: Improvements in or relating to microphones
IPC: H04R21/02
Filed: 1928-03-28
Abstract: 316,332. Burndept Wireless, Ltd., and Ridley, J. H. D. March 28, 1928. Microphoncs.-A microphone of the type in which the current flow through the granular material between the electrodes is transverse to the incident sound waves is provided with channel shaped electrodes partially surrounded by coatings of rubber or like non- resilient material, also of channel formation, so that the exposed surface is shielded from the sound waves. The device shown comprises a block 1 of insulating material made up of a number of laminations 1<a> - - 1#. The upper lamination 1<a> is formed with a rectangular opening within which is mounted on the succeeding lamination 1<b> a rectangular medial lamination 1g so as to form a shallow rectangular recess a terminating at opposite sides in parallel rectangular troughs b. The electrodes 2, partially surrounded as shown by rubber coatings 5, are located respectively in the troughs b, the granular resistance material 3 filling the recess a and the unoccupied portions of the troughs. The top surface of the lamination 1<b> is recessed to receive the coatings 5, the recesses, together with the lower walls of the coatings and electrodes extending, as shown in Fig. 3, endwise under the lamination 1<a>. This lamination is also recessed to receive rubber plugs 18, the lower walls of the electrodes being gripped between these plugs and the lower walls of the coatings. A celluloid diaphragm 4, covering the recess a and troughs b is clamped in position by an insulating ring 6, a piece of gauze 9 being secured in front of the diaphragm by means of a plate 10. The material 3 consists of a 75 per cent filling of not finer than 200 mesh to the inch carbon granules, 20 per cent filling of carbon powder of the finest grade and 5 per cent filling of graphite powder. The block 1, which may be of ebonite, is loaded by means of a heavy metal, e.g., by making the lamination 1<c> of lead. The degree of sensitivity of the instrument may be varied by substituting medial laminations 1g of differing depths. Conducting leads 7 pass to the electrodes 2 through the block 1 from terminals 8, the microphone being supported by eyelets 15 carried by plates 16 secured to the block 1 by screws 17.
Patent GB-898415-A (GB)
Title: Novel phosphoric acid alkyl alkinyl ester monoamides, and process for the production thereof
Inventor: BLUM DIETER WOLFGANG
IPC: C07F9/24
Filed: 1960-03-17
Abstract: The invention comprises alkyl alkynyl phosphoramidates of formula <FORM:0898415/IV (b)/1> where R1 is alkyl, cycloalkyl, aryl or aralkyl, R2 and R3 are hydrogen or alkyl, or R2 and R3 together complete a cycloaliphatic ring, R is hydrogen, alkyl, hydroxyalkyl, alkoxyalkyl, cycloalkyl, aryl, aralkyl or alkenyl and R1 is alkyl, hydroxyalkyl, alkoxyalkyl, cycloalkyl, aryl, aralkyl or alkenyl, or R and R1 together complete a heterocyclic ring.  They are prepared by reacting an alkyl alkynyl phosphorochloridate of formula <FORM:0898415/IV (b)/2> with a primary or secondary amine, if desired, in the presence of an acid-binding agent and/or a diluent; temperatures of -20 DEG C. to +80 DEG C. or higher are mentioned. The products are stated to be pesticides.  The phosphorochloridates, which are stated to be novel, are prepared by reacting alkyl phosphorodichloridates with acetylenic alcohols, the alcohol being added in small amounts at a time.
Patent GB-1055880-A (GB)
Title: Improvements in hinge arrangements
IPC: E05D5/02
Filed: 1963-03-09
Abstract: 1,055,880. Band clips; hinges. E. A. PARSONS. March 9, 1964 [March 9, 1963], No. 9454/63. Headings E2B and E2F. A hinge arrangement comprises a band clip 10 including a looped body 12 to extend around a support member 14 and formed with a pair of spaced apart lugs 16 each having an aperture through which extends screw means 34, 36 to draw the lugs together and contract the looped body to grip the support member, the looped body being formed with a channel 22 extending axially thereof and opening into the interior of the looped body so that the open side of the channel can ultimately be closed by the support member when the band clip formed by the looped body and the screw means is applied thereto and a hinge device 38 made of sheet material and formed with a hole extending through the thickness of the sheet material to receive a securing screw whereby the device can be secured to a further member 32 and being of forked formation to provide two arms and a gap therebetween in which the channel 22 of the band clip is disposed to be engaged by a hinge pin carried by the said arms and extending through said gap, whereby the band clip and the hinge device are hinged together and enable said further member to be hinged to said support member. In the construction shown the hinge device has two leaves connected together by a hinge pin both leaves being cranked to enable the further member 32 to be moved through 90‹. The hinge arrangement shown is used for a seat assembly of a public transport vehicle and the member 32 is a cushion board, the member 14 being part of the frame of the seat assembly; the arrangement allows the seat to be tilted to a vertical position. The band clip shown is of circular configuration but in a modification it can be oval.
Patent GB-170019-A (GB)
Title: Improvements in swash plate driving mechanism
IPC: F16H23/08
Filed: 1920-04-01
Abstract: 170,019. Johnston, D. D., Yeakley, M. A., Goggin, T. E., and Stambaugh, S. F. April 1, 1920. Driving-gear.-Engines with cylinders parallel to a central shaft 23 drive through swash-plate mechanism comprising an inclined disc 28, a ring 23' mounted upon the disc and connected by arms 63 to the pistons, and a second ring 68 mounted to turn about an axis at right-angles to the shaft 23. Projecting into the ring 68 are the ends 65 of the arms 63, and rods 16 arranged diametrically opposite the arms 63. The wobbling ring 23<1> carries a pair ofr balance weights (not shown), and additional balance weights 38, 30 are mounted at opposite ends of the shaft. A modified construction is described in which cylinders are mounted on both sides of a centrallydisposed swash-plate, the balance weights being mounted one at each end of the engine. Modified means for balancing an engine having cylinders arranged as in Fig. 1 are described. They comprise (1) unequal balance weights mounted upon the driving shaft at different distances from the point of intersection of the axis of the shaft and the plane of the swashplate, a line joining the centres of gravity of the weight passing through the point of intersection, and (2) a construction of balance weights as in (1) but in which a line joining the centres of gravity of the weights do not pass through the point of intersection of the shaft axis and the plane of the swash-plate.
Patent GB-351092-A (GB)
Title: Improvements in and relating to grinding machines for helical gears
Inventor: AEPPLI ALBERT
IPC: B23F5/06
Filed: 1930-03-25
Abstract: 351,092. Grinding. AEPPLI, A., 219, Hardstrasse, Zurich, Switzerland. March 25, 1930, No. 9549. [Class 60.] Wheel apparatus.-Involute helical gears are ground by two plate-shaped grinding- discs working over two flanks, a relative rolling motion and a relative feed motion along the helix being effected between the work and the tools, a complete tooth being ground during a single passage in one or other direction. According to one construction, grinding-discs 7 are mounted in rotatable guides 5 carried by horizontally slidable guides 4 in turn carried by guides 3 vertically slidable on a standard 2 which may be pivoted on the base 1 about the axis of symmetry of the discs 7. A carriage, on which a second carriage 9 is transversely reciprocated, is traversed longitudinally from a pulley 20 through a worm gear 21, shaft 22, change gears 23 and spindle 24. A pulley 24<1>, on shaft 22 operates a crank 25 to reciprocate transversely the carriage 9, carrying a housing 10 for the indexing device, a mandrel 11 for the work 12, and a shaft carrying a member 13 of equal curvature to the rolling cylinder of the tooth involute extending therefrom. Bands 14 are fastened at one end to the member 13 and at the other to a frame transversely slidable and integral with an arm 17, carrying a roller which bears in a slideway 18 longitudinally slidable and rotatable on the machine, its inclination alphato the longitudinal axis being adjusted equal to the desired pitch angle at the radius of the rolling cylinder, the grinding- head being similarly inclined. As the work is fed forward it is thus simultaneously rotated so that the grinding-discs travel along the required helical path. A rolling motion is also imparted by reciprocating the carriage 9 transversely. A complete pair of flanks is worked either during a single longitudinal stroke, with rapidly alternating rolling motions, or during a single rolling motion with rapidly alternating longitudinal motions. In a modification, the axis of the work is inclined to that of the machine at the pitch angle while the discs are parallel thereto, the guideway for the roller being parallel to the work axis. One grinding-disc may be capable of being adjusted to a position in advance of the other so that each flank is commenced simultaneously.
Patent GB-218606-A (GB)
Title: Improvements in and relating to the manufacture of alkali metals
IPC: C25C1/02
Filed: 1923-04-03
Abstract: 218,606. Ewan, T. April 3, 1923. Drawings to Specification. Recovering alkali metals.-Sodium and potassium are obtained by evaporation of an electrolytically obtained solution of the metal in liquid anhydrous ammonia.
Patent GB-376266-A (GB)
Title: Hard metal alloys
IPC: C22C29/06
Filed: 1931-04-01
Abstract: Tungsten and tantalum carbides may be made by heating to about 2000 DEG  C. powdered tungsten or tantalum, or mixtures thereof, or their oxides, with lampblack or charcoal which has been preheated to remove impurities and gases.  The proportions are preferably about 3,1 or 6,17 per cent of carbon to 96,9 or 93,83 per cent of tungsten, and 6,2 per cent of carbon to 93,8 per cent of tantalum.  The resulting carbides are ground and degasified.ALSO:Hard alloys consist of an auxiliary metal, preferably one or more of the metals iron, nickel, and cobalt, and carbides of tungsten and tantalum, and contain no appreciable amount of free tungsten or tantalum.  Carbides of tungsten and tantalum may be replaced by carbides of molybdenum and niobium.  Tungsten and tantalum carbides may be made by heating to about 2000 DEG  C. a mixture of powdered tungsten or tantalum, or mixtures thereof, or their oxides, with lampblack or charcoal which has been preheated to remove impurities and gases.  The proportions are preferably about 3,1 or 6,17 per cent of carbon to 96,9 or 93,83 per cent of tungsten, and 6,2 per cent of carbon to 93,8 per cent of tantalum.  The resulting carbides are ground and degasified and mixed with 5-9 per cent of nickel, which may be added in the form of hydrogen-reduced powder in presence of a liquid hydrocarbon. The mixture is pressed and heated in a reducing atmosphere.
Patent GB-1066106-A (GB)
Title: Improvements in top notcher of umbrellas
Inventor: BROOK ERIC PERRY
IPC: A45B25/10
Filed: 1965-03-09
Abstract: 1,066,106. Improvement in umbrella topnotches. BROOK & BURGESS (PLASTICS) Ltd. Feb. 28, 1966 [March 9, 1965], No. 9857/65. Heading A4P. A boss or notch A, for an umbrella, on which the ribs are pivoted, moulded in a plastics material and formed with a centre longitudinal bore to engage an umbrella tube or stick B, a circumferential groove a<SP>1</SP>, and longitudinal slots a<SP>2</SP> extending from one face into the groove in which the ribs are pivoted, is characterised by an outer taper at one end of the boss or notch with a rib or ridge a<SP>3</SP> thereon, a transverse bore being provided through the boss for the reception of a pin C, preferably a steel pin, by which the boss is affixed to the tube or stick of the umbrella.