baber/WOPTO huggingface dataset:
Patent GB-1425932-A (GB)
Title: Dampers
IPC: F16F9/12
Filed: 1972-02-18
Abstract: 1425932 Fluid dampers A R B NASH 15 Feb 1973 [18 Feb 1972] 7619/72 Heading F2S A fluid damper comprises a body 2 providing a chamber 12 into which a vane member 8 projects, the vane member and the body having a pivot connection (pins 6) for relative oscillation about an axis extending transversely to the direction of projection of the vane member, and a flexible seal 32 extending between the body and the vane member to close the chamber. The chamber 12 is of tapered form, its crosssectional area reducing with increasing distance from the pivot connection of the vane member 8. Both the height and the breadth of the chamber 12 decrease. The vane member 8 is similarly but more sharply tapered, to allow pivoting movements of 5 degrees each side of centre of a rod 10 to which the vane member 8 is attached. The shape of the body 2 and the vane member 8 enables them to be produced as metal die-castings or plastics mouldings. Externally of the pins 6, the internal cross-section of the body becomes circular.
Patent GB-1383599-A (GB)
Title: 9-3-amino-1-propenyl-9,10-dihydro-9,10-ethano-anthracenes and processes for their manufacture
IPC: A23K1/16
Filed: 1972-02-18
Abstract: 1383599 9(3 - Amino - propen - 1 - yl) - 9,10- ethano-anthracenes CIBA-GEIGY AG 18 Feb 1972 [23 Feb 1971 17 Jan 1972] 7624/72 Heading C2C Novel compounds of general Formula I in which R is a secondary or tertiary amino group, and the positions 1 to 8 of the ethanoanthracene ring may be substituted by up to four substituents, R A  which may be the same or different and are selected from C 1-7  alkyl, C 1-7  alkoxy, C 2-7  alkenyloxy, C 1-7  alkyl thio, C 1-7  alkylsulphonyl, C 1-7  alkanoyl trifluoromethyl or halogen. R 10  is C 1-7  alkyl, C 2-7  alkenyl, halogen or hydrogen, R 0 , R<SP>1</SP> 0  and R<SP>11</SP> 0  are C 1-7  alkyl or hydrogen, Ae is a 1,2-ethylene radical which may be substituted in the 1- and/or 2- position by C 1-7  alkyl radicals are prepared by (1) reacting a 9-(3-Y-propen-1-yl)-9,10-ethanoanthracene in which Y is an esterified hydroxyl group with an amine (R-H), (2) reduction of (i) a 3-R-propyn-1-yl group using a Lindlar, Raney-Nickel or palladium catalyst or (ii) a group in which the nitrogen is bonded to one of its substituents by a double bond using a hydride or hydrogen plus a catalyst, (3) introduction of a 9,10-ethano radical into a 9-(3-R-propen- 1-yl)-anthracene by a Diels-Alder reaction or (4) conversion of a secondary amine into a tertiary amine. E and Z isomers of compounds of Formula I may be isolated. Novel starting materials are 9-(3-oxo-propen- 1-yl)-9,10-ethano-anthracenes which are prepared from 9-formyl anthracene by acetalization, the acetal obtained being reacted with an enthenyl ether to give a substituted or unsubstituted 3-(9-anthranyl) acrolein which is reacted with an unsubstituted or alkylated ethylene in an inert solvent to form 9-(3-oxo-propen-1-yl)-9,10-ethanoanthracene. This compound may be (a) reacted with a primary amine to form an imino compound which may be reduced as in method (2), (b) reduced using sodium borohydride to form the 3-hydroxy compound which may be esterified to form the 3-esterified hydroxy compound or (c) successively brominated and dehydrobrominated to form the (3-oxo-propyn-1-yl) compound which may be converted to the 3-R-propyn-1-yl group by reduction to an alcohol, conversion of the alcohol to a reactive ester which is reacted with a primary or secondary amine. Z - 9 - (3 - hydroxy - propen - 1 - yl) - 9,10- ethano-anthracene is converted to the trans isomer by reaction with perbenzoic acid to form the 1,2-epoxide, protection of the 3-hydroxyl group by forming a tetrahydropyranyl ether, reaction with diphenyl lithium and methyl iodide to form E-9-[3-(2-tetrahydropyranyloxy)- propen-1-yl]-9,10-ethano-anthracene and removal of the hydroxy protecting group by acid hydrolysis.  Compounds of Formula I are anti-depressants and form with a suitable carrier a pharmaceutical preparation which may be administered orally or parenterally. Compounds of Formula I may also be used as additives to animal fodder.
Patent GB-480735-A (GB)
Title: Improvements in and relating to stanchions for shop furniture and the like
IPC: A47F3/12
Filed: 1937-03-16
Abstract: 480,735. Joints; brackets. COWDROY, T. C. March 16, 1937, No. 7664. [Classes 52 (ii) and 52 (v)] Uprights 13 for showcases or counterfittings are formed on their inner faces with dovetail grooves 15 in which slide fittings 16, 17 having projections parallel to the flanges of the uprights and serving to hold vertical sheets of glass 10, 11. The fittings may be provided with hori zontal jaws 21, 22 tc hold shelves.
Patent GB-985078-A (GB)
Title: Improvements in watch bracelets
IPC: A44C5/00
Filed: 1964-02-24
Abstract: 985,078. Bracelets. ATLANTIC FABRIQUE D' HORLOGERIE S.A. Feb.- 24, 1964 [Dec. 26, 1963], No. 7664/64. Heading A3H. [Also in Division G3] A bracelet is provided with a decorative plate which conceals a watch case which is slidably movable with respect to the decorative plate for exposing the dial of a watch. A bracelet chain 1 is connected to the watch case 5 and to the decorative plate 4 which has three side walls connecting the watch case beneath the plate. The chain 1 is pulled to withdraw the watch  case 5 from an extension 5a supported beneath the plate 1 by means of a cross bar 7 extending between the side walls of the plate and through slots in the extension 5a. A spring 10 between the bar 7 and the end wall 5c of the extension 5a retains the extension beneath the plate 1. One side wall of the plate 4 has a slot for the passage of the watch winder 12.
Patent GB-905517-A (GB)
Title: Improvements in piston rings
Inventor: ALLBRIGHT DENNIS HOWARD
IPC: F16J9/20
Filed: 1958-03-11
Abstract: 905,517. Piston rings. DUNLOP RUBBER CO. Ltd. Feb. 20, 1959 [March 11, 1958], No. 7722/58. Class 122 (1). A piston ring comprises a split ring 6 and a restriction 8 that controls the expansion or contraction of the split ring and is made of the same material as the cylinder or of material having a similar coefficient of thermal expansion as the cylinder material so that the degree of interference between the ring 6 and the cylinder wall is substantially constant at all temperatures. The split ring 6 is of carbon and the ring 8 has a small clearance with the cylinder bore. In a modification, the split ring 6 is of T-section and a restriction ring is located on each side of its radial flange. In another modification, the restriction ring is housed in an annular groove in one end wall of the split ring. In a further modification, Fig. 8, a carbon segmental ring 11 is located in a peripheral groove in the restriction ring 13.
Patent GB-213597-A (GB)
Title: Apparatus for automatically correcting the cutting of gear wheels
IPC: B23Q23/00
Filed: 1924-03-27
Abstract: 213,597. Compagnie Electro-Mecanique. March 29, 1923, [Convention date]. Gear-cutting; indexing. - A device for compensating for the wear of a gear element, such as a worm A, in a gear-cutting machine comprises a feeler S which is moved until it makes contact with said element A and which, if such movement is excessive owing to wear, actuates the compensating mechanism. The workcarrying plate P is driven by the worm A which is constantly rotated by a shaft B through worm gear C and a differential E of which the bevel D is keyed on the shaft of the worm A. The feeler is reciprocated by frictional engagement with a sleeve M operated by a cam L and spring R. If, owing to wear, the feeler advances beyond the normal position it actuates an electrical contact Z which, acting through a relay Y, energizes a solenoid I to rotate a ratchet H through one tooth. This gives a very slight extra rotation to the worm A by rotating the worm wheel F which carries the planetary bevels of the differential. The nose of the feeler is pivoted and held by a spring T to avoid breakage. Specification 110,325 is referred to.
Patent GB-671593-A (GB)
Title: An improved press for briquetting metal scrap
IPC: B30B9/32
Filed: 1950-03-29
Abstract: 671,593. Consolidating scrap. LINDEMANN, W. March 29, 1950 [Oct. 1, 1948], No. 7892/50. Class 83 (iv). In a press for consolidating metal scrap comprising a box 8 having a charging opening which is closed by a pivoted lid 1, the side wall 9 of the box is separated from the adjacent free edge of the lid which is provided with a cutting- edge 10 co-operating with a cutting-edge 11 on the press ram 2 to sever the scrap projecting between the wall 9 and the lid. The lid 1 is opened for the insertion of scrap and closed by a hydraulic ram 5 through a push-rod 6 and a pair of arms 7 integral with the lid. A spring- loaded locking means 17 engaging the rod 6 and locking bolts 16 in the side wall engaging the back of the lid are provided and may be automatic in operation to hold the lid in position when the preliminary press-ram 2 is operated. A final pressing operation is performed by a further ram 3, acting through an aperture in the wall 13 of the box. The cutting edges 10, 11 may be inclined relatively to one another and may be in zig-zag form.
Patent GB-155731-A (GB)
Title: Pulverized fuel furnaces
IPC: F23C99/00
Filed: 1920-03-17
Abstract: 155,731. Bergman, L. H. March 17, 1920. Pulverulent - f u e l burners.-In a pulverulent-fuel furnace wherein the fuel is injected, by an air blast, in two inwardly and downwardly directed m u t u a l l y impinging streams, and wherein the combustion products are caused to revert and escape through an outlet situated adjacent and beneath the fuel-nozzles, each nozzzle is so arranged that the air blast is supplied in two concentric streams, the inner stream only carrying the fuel. Fig. 4 shows a nozzle in section. The chamber 15 being in connexion with the airconduit, supplies concentric air-streams through the curved tube 17 and the annular space between the inner tube 17 and the outer tube 16, the fuel pipe 11 being provided with a conical extension 18 which supplies fuel to the inner tube 17 only.
Patent GB-622547-A (GB)
Title: Improvements relating to cam and lever mechanism
IPC: F16H25/08
Filed: 1947-03-24
Abstract: 622,547. Cam mechanism. DEDIEU, J. March 24, 1947, No. 7981. Convention date, March 29, 1946. [Class 80 (iii)] [Also in Group XXVII] In a cam mechanism particularly for converting the reciprocating motion of pairs of pistons 4d, 4g of an internal combustion engine with tangential cylinders of the type described in Specification 472,746, [Group XXVI], into rotary motion by means of cranked levers 1 to a cam 14e, 14i on the shaft 7, rollers 13, 16 are provided co-operating with the outer and inner cam surfaces 14e, 14i respectively and are mounted upon mutually eccentric surfaces 11c, 11a on a sleeve member 11 carried on one arm 1b of the cranked lever 1. This sleeve 11 is rotatably adjustable on a supporting pin 6 to take up any play between the cam surfaces and is locked in the adjusted position by means of a locking member 19. A small amount of rocking movement of the sleeve 11 is allowed by a ball and socket mounting 9, 10 on the pin 6.
Patent GB-1450267-A (GB)
Title: Rotor wheel for radial-flow fans and turbines
IPC: F01D5/04
Filed: 1974-02-21
Abstract: 1450267 Welding by pressure MOTOREN UND - TURBINEN - UNION MUNCHEN GmbH 21 Feb 1974 [22 Feb 1973] 8017/74 Heading B3R A sheet metal bladed rotor wheel, for a radial flow fan or turbine, comprises a flared sheet metal annulus 1 and a plurality of sheet metal blades each comprising a blade portion 3 and flanges 2, the latter being connected to the radially outer surface of the annulus by explosive welding. The blades are formed from two L-cross-sectioned members brazed, or, at 13, spot welded together. In producing the rotor wheel, the blades are assembled in a jig with each blade portion 3 supported by a pair of jig segments 6 which present a blade portion accommodating gap 8 and flange supporting recesses 9. A thin layer 4 (e.g. a foil) of explosive is applied to the radially inner surface of the annulus and the latter is then supported, by the jig, over the flanges 2 at a small distance (5 mm. maximum) therefrom. The explosive is ignited through a jig base hole adjacent the bore of the annulus, the explosive front flaring to explosively weld the annulus to the flanges.
Patent GB-565764-A (GB)
Title: Improvements in or relating to modulated carrier wave signal receivers
IPC: H03J3/12
Filed: 1943-05-21
Abstract: 565,764. Frequency modulation wireless receiving circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 21, 1943, No. 8077. Convention date, May 1, 1942. [Class 40 (v)] Tuning of a wireless receiver, particularly when using frequency modulation, is facilitated by means operated by voltages derived from a discriminator network for reducing the gain of the output stages when the receiver is inistuned. Fig. 1 shows the invention applied to a frequency modulation receiver in which the output from the last I.F. stage is fed to a discriminator circuit 1, 3, 3<1>, 4 of the phase shift type described in Specification 489,094, connected to a double diode 2 having load resistors 5, 6. The signal is fed through condenser 12 to the grid 11 of the first audiofrequency amplifier. Two pairs of opposed diodes 16, 17, 18, 19 are connected through a filter network across resistances 5, 6, while the anodes of diodes 18, 19 are connected to the junction of-resistances 14, 15 connected between grid 11 and earth. With the above arrangement, the upper end of resistance 5 goes-positive, or negative relative to the lower end of resistance 6 according to the direction in which the LF. differs from the frequency to which the circuits 1, 3 are tuned. With the upper end of resistance 5 positive current flows through diode 16 to earth, through resistance 15, diode 19 and resistance 6<1> to the lower end of resistance 6. This applies a negative bias to grid 11 through resistance 14. Similarly, with the lower end of resistance 6 positive, a path is opened through diodes 17, 18 to cause current to flow in the same direction through resistance 15. Thus, in whichever direction the receiver is off tune, a negative bias is applied to the audio amplifier. This causes the output to fall off rapidly with mis-tuning, thus facilitating tuning by ear. The bias may be arranged to mute the receiver completely when tuning between stations. Two other embodiments are described, in which only two diodes are used for opening the bias path, Figs. 2 and 3 (not shown).
Patent GB-1414985-A (GB)
Title: Current measurement
IPC: G01R19/165
Filed: 1972-02-22
Abstract: 1414985 Measuring current TAYLOR SERVOMEX Ltd 22 Feb 1973 [22 Feb 1972] 8102/72 Heading G1U In apparatus for measuring a small D.C. i, this is first integrated and the slope of the integrator output is detected to provide a signal representing the input current and a resetting switch connected to the integrator has means for compensating any unwanted signals introduced by operation of the switch. In all the detailed embodiments, the integrator is followed by a differentiator, but it is stated that the time taken for the integrator output to rise to a given value may be measured. The basic principle is shown in Fig. 1, where an operational amplifier Al has i as an input and operates as an integrator by means of capacitor Cl. Capacitor C2, amplifier A2 and resistor R1 form a differentiator whose output is -i.R1.C2/C1. The capacitors are periodically discharged by gauged switches S1, S2. In order to avoid the significant periods when the capacitors are being discharged, a modification Fig. 3 (not shown) provides for inversion of the input, feeding both inputs alternately to an integrator, inverting the integrator output, differentiating both outputs and feeding them alternately to the apparatus output. While each differentiator capacitor is not connected to the apparatus output it is discharged to earth. The resetting switches may comprise insulated gate F.E.T's which disadvantageously inject charge into the system due to their possessing finite capacitance. This effect is overcome in accordance with the requirements of the invention by injecting compensating pulses into the integrator of opposite polarity to the gate switching pulses Fig. 8 (not shown). Alternatively, devices such as photoresistive choppers or reed relays may be used. Fig. 10 (not shown) illustrates a detailed embodiment of an integrator wherein a high gain amplifier has inverting and non-inverting inputs (A,B) and an output (C). The output is also fed to a current generator (49) having an output (D). During the reset period, the inverting input is connected to earth and the generator output is connected to the non-inverting input (B). At the end of the reset period any change in output (D) results in current from a further integrator output (F) being injected into the inverting input (A) as a correction. A further embodiment of integrator Fig. 13 (not shown) has differential inputs (M,N) and two such units are used to measure the difference between two input currents Fig. 14 (not shown).
Patent GB-388581-A (GB)
Title: Improvements in or relating to pistons for internal combustion engines
IPC: F02F3/02
Filed: 1932-03-19
Abstract: 388,581. Pistons. MAHLE, E., 3, Rappweg, Stuttgart, Germany. March 19, 1932, No. 8183. Convention date, March 23, 1931. [Class 122 (i).] In a piston having longitudinal slots b and transverse slots c, the wings d thus formed are made of tapered section and the piston is of reduced diameter in the longitudinal plane of the gudgeon-pin axis. The wings d may be reinforced by webs f, g. h. The slots b may extend either not quite to the end of the skirt, or not quite to the transverse slots c.
Patent GB-181498-A (GB)
Title: Improvements in means for detachably connecting the parts of timber construction
IPC: F16B12/20
Filed: 1921-03-16
Abstract: 181,498. Marks, E. C. R., (Boers, I. de, and Vries, A. H. de). March 16, 1921. Stud-and-slot fastenings.-Timber pieces are connected together by having a projection 2 on one member adapted to enter a. longitudinal hole in the other member leading to a recess 6, a cap member 7 with a cam groove 8 being adapted to fit this recess and to engage a notch in the projection, so that by rotation of the cap the parts are drawn together. In a modification, the projection on one member consists of a screw head 16 adapted to enter a hole 11 in the cap leading to a slot the edges of which are of cam formation Fig. 4, so that on rotation of the cap the head of the screw rides up the cam inclines 13 and the parts are drawn together.
Patent GB-454415-A (GB)
Title: Coating electrolytically iron and iron alloys with firmly adherent and impermeable films or layers of metal or metals
IPC: C25D5/36
Filed: 1936-03-19
Abstract: Iron or an iron alloy is prepared for plating by a strong etching to bring out the crystalline structure, and after washing is electroplated with a thin layer of copper from an alkaline bath, then with a substantial layer of copper from an acid bath and is finally subjected to heat treatment at a temperature above 300 DEG  C., preferably 400-600 DEG  C.  The etching may be effected in a bath containing 10 per cent of sulphuric acid and 2 per cent of nitric acid and is carried on until a powerful evolution of hydrogen takes place.  The first layer of copper should be 0,002-0,005 mm. in thickness and the second layer at least 0,01 mm.  Other metals such as zinc, tin and lead may be applied over the copper electrolytically or from a molten bath, in some cases after an intermediate electrolytic coating of nickel or cobalt.  The secondary coatings may be applied before or after the heat treatment.
Patent GB-125482-A (GB)
Title: Improvements in Propellant Explosives.
IPC: C06B25/22
Filed: 1917-06-09
Abstract: 125,482. Du Pont de Nemours & Co., E. I., and O'Neil, A. S. Aug. 17, 1916, [Convention date]. Explosives.-Consists in impregnating the surface of nitrocellulose powder grains to an appreciable depth with dinitrotoluene to which may be added camphor and diphenylamine. The impregnating material in powdered form and the nitrocellulose grains are tumbled in a revolving barrel, heat is then applied, and the coated grains immersed in hot water for several hours to cause the impregnation. Specification 15553/98 is referred to.
Patent GB-542130-A (GB)
Title: Reduction of power transformer interference in radio receivers
IPC: H05K9/00
Filed: 1940-05-09
Abstract: 542,130. Wireless receiving apparatus. PHILCO RADIO & TELEVISION CORPORATION. May 9, 1940, No. 8362. Convention date, June 5, 1939. Drawings to Specification. [Class 40 (v)] In a radio receiver, the loop antenna is protected from high frequency magnetic radiations by completely enclosing the power transformer in a shield made of low permeability tinned steel or of aluminium or copper. A conventional receiver is described in which the loop antenna is that described in Specification 541,905. According to the Specification as open to inspection under Sect. 91, the screen may be associated with the audio transformer and may screen the high-frequency coils even in the absence of a loop antenna. This subject-matter does not appear in the Specification as accepted.
Patent GB-736623-A (GB)
Title: Improvements in or relating to heading machines
Inventor: BALLARD ALFRED GEORGE
IPC: B21G3/16
Filed: 1953-03-27
Abstract: 736,623. Forging-machines. GUEST, KEEN & NETTLEFOLDS (MIDLANDS), Ltd. March 25, 1954 [March 27, 1953], No. 8463/53. Class 83 (4). Shearing.-A heading machine has a severing tool 20 slidable transversely of the heading punch 14 and actuated by an arm 17 carried by and extending forwardly of the heading punch. When the stock 10 has been headed, it is advanced through the die 11 and a headed blank 27 is severed therefrom by a pair of pinching cutters 20 mounted on slides 21 which carry rollers 23 engaging opposite sides of arms 17. The arms are pivoted to the block 13 carrying the heading punch and have inclined portions 18 forming cam surfaces which move the cutters inwardly during the retraction of the punch. Adjustable slides 24 operated by screws 26 allow the position of the arms and hence the setting of the cutters to be varied.
Patent GB-1165266-A (GB)
Title: Improvements in or relating to Compositions for Coating Paper
IPC: D21H19/60
Filed: 1967-02-22
Abstract: 1,165,266. Coated paper. JAPAN SYNTHETIC RUBBER CO. Ltd. 22 Feb., 1967 [11 March, 1966], No. 8525/67. Heading,. B2E. [Also in Division C3] Paper is coated with a composition comprising pigment, a pigment binder. which is starch, a starch derivative, polyvinyl alcohol or a partially hydrolyzed polyvinyl acetate, and a polymer latex which has been prepared by polymerizing a mixture of 30-60% by weight of a C 4-6  conjugated diolefin, 0.1-5% by weight of a C 3-6  α # unsaturated carboxylic acid, and 35-70% by weight of styrene, vinyl toluene or their α-methyl derivatives, or a C 1-12  alkyl acrylate or methacrylate in the presence of at least one surface active agent of the formula:- wherein R" and R"' are C 8-18  alkyl groups and M and M<SP>1</SP> are hydrogen,- sodium, potassium, ammonium or an ethanolamine residue. The monomer mixture may in addition contain 1- 10% by weight of a polyoxyethylene, polyoxypropylene, hydroxyethyl or hydroxypropyl ester of acrylic or methacrylic acid in place of part of the third monomer. The compositions may also contain melamine-formaldehyde waterproofing resins.
Patent GB-440600-A (GB)
Title: An improved light-metal alloy
IPC: C22C21/06
Filed: 1935-03-19
Abstract: Aluminium alloys for sliding contact machine parts such as bearing cups, guides, and pistons, contain 0,1-10 per cent of magnesium and 1,1-10 per cent of iron, for example, 0,5 per cent of magnesium and 6 per cent of iron.  The alloys may be subjected to a working treatment as by forging, pressing, rolling, drawing, or hammering.