baber/WOPTO huggingface dataset:
Patent GB-931805-A (GB)
Title: Improvements in or relating to film drive mechanism for photographic cameras
Inventor: WATTS REGINALD
IPC: G03B41/02
Filed: 1959-03-06
Abstract: 931,805. Cameras for aerial photography. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Feb. 25, 1960 [March 6, 1959], No. 7815/59. Class 98 (1). [Also in Group XXIV] In a motor-driven camera for aerial photography, the film is driven by a sun wheel forming the output member of a differential coupling including an input sun member driven at constant speed by the motor and coupled to the output member by at least one planetary member on a carrier, the latter deriving variable rotary movement from the input member through a cam mechanism including a gear and pin-and-slot connection to the carrier to produce sinusoidal variation in the output so that the film-drive speed has the appropriate value, when the shutter is open, to compensate for image movement. As shown in Figs. 1 and 2, the input sprocket 12 drives, via idler gear 13, a sun wheel 16 whose larger diameter sprocket drives wheel 24, whereby the cage 20 (21) is oscillated by means of a slot 22 and eccentric pin 23, and whose smaller diameter sprocket is bevelled and engages a pair of bevelled wheels 18, 19, rotatably mounted on and rotatable with the cage 20 and thus transmitting a sinusoidallyvarying speed of rotation to the output sun wheel 17. This is geared to the film-drive sprocket 25 so that a predetermined speed of film movement can be obtained at the instant of exposure according to what part of the cycle is coincident with the opening of the shutter. The amplitude of variation in the drive to wheel 17 may be varied by setting pin 23 at various radial distances from the centre of wheel 24, and the direction of the slot 22 is so chosen that the speed of rotation of the output wheel 17 has a particular value when the shutter is open, the shutter mechanism (not shown) being operated directly by the rotation of input sprocket 12. The shutter may be of the slotted bling type and its motion may be parallel with or transverse to the direction of film feed.
Patent GB-180782-A (GB)
Title: Improvements appertaining to pattern surface mechanism for looms
IPC: D03C19/00
Filed: 1921-03-12
Abstract: 180,782. Hodgson, Ltd., G., and Kay, J. March 12, 1921. Pattern surfaces &c.-Pattern lags A are coupled together by double hooked members 2 disposed within openings 7 in the lag and having a bent portion d which is passed through an aperture 4 in the lag and is secured by a detachable spring 6 inserted between the top of the lag and the portion d. A portion f of the spring is bent back and is formed with an indent f<1> engaging with the edge of the aperture 4. The end of the lag is recessed at 8 to receive the bent portion of the spring.
Patent GB-557939-A (GB)
Title: Improvements in and relating to the dyeing of nylon fibres
IPC: C09J7/38
Filed: 1942-06-09
Abstract: 557,939. Dyeing textiles. COURTAULDS, Ltd., and BOULTON, J. June 9, 1942, No. 7852. [Class 15 (ii)] Nylon fibres are pre-treated with an aqueous solution of hydrogen peroxide, potassium permanganate, nitric acid, sodium perborate, potassium persulphate or an acid solution of sodium hypochlorite of pH less than 3 in order that level dyeings may be obtained thereon with direct cotton dyestuffs. In examples (1) a knitted fabric made up with bands of three different kinds of bright nylon yarn is pretreated for from 55 minutes to 5 hours with a dilute aqueous solution at room temperature of hydrogen peroxide of pH=10, rinsed and dyed with Chlorazol sky blue FF in an aqueous bath containing acetic acid, (2) a similar fabric is pre-treated for 1 hour with a dilute aqueous solution at room temperature of sodium hypochlorite of pH=2 to 2.5, washed free from chlorine, with addition of sodium thiosulphate in one rinse, and dyed as in (1) with Diphenyl blue M2B, (3) skeins of a mixture of two kinds of bright nylon yarn are pre-treated for 1 hour with a dilute aqueous solution at 80-90 C. of sodium perborate, rinsed and dyed as in (1). Specifications 461,236, 461,237 and 539,566 are referred to.
Patent GB-422779-A (GB)
Title: Improvements in knitted fabric and in the means for and method of producing same
IPC: D04B1/06
Filed: 1933-04-18
Abstract: 422,779. Knitting. HOSIERY DEVELOPMENTS, Ltd., 30, Park Row, and MILLS, R. K., 3, Edwards Lane, Sherwood, both in Nottingham. April 18, 1933, Nos. 7877/33 and 11495/34. Divided out of 422,801. [Class 74 (ii)] In a ladder-proof knitted fabric of the type described in Specification 329,098, [Class 74 (ii)], the locking yam c is preferably of finer gauge than the locked yarn b and is laid in sufficiently loosely for the loops to be of substantial curvature when the fabric is unstretched. For drawing and measuring off the required amounts of locking yarn the sinkers are provided, above the throat 7, with a catch 9, 10 stepped as shown. The throat 7 extends back past the vertical edge 10. For making the locking stitches the needles are provided with supplementary latches and the cam box of the machine is provided with supplementary cams. To tighten the locking stitches proportionally to the locked stitches as knitting proceeds down the leg of a stocking &c. a ring 13 mounted on the end of the main cam drum 12 is periodically racked so as to allow a cam segment 15 carried therewith gradually to displace a push rod 20. The rod 20 is connected by intermediate connections to a radially slidable plate on the sinker ring and this plate carries a cam device serving to withdraw the sinkers the required amount. Specifications 330,041, [Class 74 (ii)], 360,998, 376,837, 380,554 also are referred to.
Patent GB-124323-A (GB)
Title: Improved Resilient Means for Automatically Controlling the Actuation of Variable Speed and Reversing Gearing, and Application thereto.
Inventor: ROGERS GEORGE
IPC: F16H61/02
Filed: 1918-05-11
Abstract: 124,323. Rogers, G. May 11, 1918. Energy-absorbing elements.- Epicyclic variable-speed and reversing gearing for motor vehicles &c. is varied automatically according to the load, by an arrangement of spring- controlled pistons moving in cylinders in a chamber filled with oil. Interengaging planet pinions b', c' engage sun wheels b, c on the driving and driven shafts d, e. By retarding the rotation of the pinions c<1> a higher forward speed is transmitted to the shaft e up to a maximum, and by retarding the rotation of the planet carrier f, a similar range of reverse speeds is obtained. The spindles of the pinions c<1> are geared through wheels g to a wheel h<1> which by a pin-and-slot device reciprocates a rod k carrying two pistons l. These pistons force oil through holes s<2> into cylinders containing a pair of spring pressed pistons m, which under heavy loads are moved towards one another uncovering a number of ports r, allowing the oil to escape into chambers s and through holes in cover plates s<4> into the compartment of the gear casing a. Under normal loads the springs are not sufficiently compressed to allow the oil to escape, and the maximum retardation of the pinions c<1> is produced, correspoiding to the top speed. For lower speeds, escape valves s<3> on a rod t are operated by hand. to allow more or less free circulation of the oil. There is a small amount of looseness between the valves s<3> and their seats, which allows some oil to be sucked past the valves by the pistons l. Similar pistons at the left hand of the gear case are actuated by a wheel w to effect the retardation of the planet carrier f to produce reverse speeds. In a modification, one set of retarding-pistons is employed and the actuating device for them is connected by a clutch either to the wheels g or to the carrier f. A non-reversing gear for motor cycles is described, in which the carrier f is the driven element and speed changes are produced by retarding an annulus engaging a single set of planet pinions.
Patent GB-678669-A (GB)
Title: Improvements in and relating to centrifugal pumps
IPC: F04D29/44
Filed: 1951-04-05
Abstract: 678,669. Centrifugal pumps. BRITISH THOMSON-HOUSTON CO., Ltd. April 5, 1951 [April 19. 1950], No. 7920/51. Class 110(i) A centrifugal pump has a tangential outlet and an arcuate inlet passage which is preferably displaced from the outlet by an angle approximately equal to the angle between adjacent blades of the impeller. The inlet passage 11, Fig. 3, is curved in the direction of rotation of the impeller 4 and concentric therewith, with a minimum radius greater than that at the roots of the impeller blades 5. Its top wall 15 slopes downwardly towards the casing wall 16, so as to provide a decreasing cross-sectional area of flow. The end of the passage 11 is angularly adjacent to, and preferably normal to the axis of, the tangential outlet (not shown) of the volute chamber 3. An annular flange 17, by which the pump is attached to, say, the drainage opening of a washing machine, may house a strainer or vortex-preventing baffle or screen. Fig. 4 shows a circumferential-flow pump in which the two parts 20, 21 of the casing each comprise channels 25, 26 which extend for about 270 degrees and terminate in tubular fittings 27, 28. Each fitting serves as either inlet or outlet, depending on the direction of rotation of the impeller.
Patent GB-1192242-A (GB)
Title: System for Converting an Analog Signal into a Digital Representation.
IPC: G01G3/147
Filed: 1967-05-09
Abstract: 1,192,242. D/A converters. RELIANCE ELECTRIC & ENG. CO. 9 May, 1967 [15 June, 1966], No. 7962/69. Divided out of 1,192,241. Heading G4H. The disclosure is identical to that of Specification 1,192,241, but the claim is directed to an A/D converter having a reference staircase generator comprising a plurality of resistors, each of equal value in a given digit position, connected in parallel across a constant voltage source, and means for converting the summed output current from the resistors into a voltage.
Patent GB-526311-A (GB)
Title: Deflation indicator for twin tyres
IPC: B60C23/06
Filed: 1939-03-13
Abstract: 526,311. Tyre-deflation indicators. SCHWIEN, F. March 13, 1939, No. 8009. [Class 144 (i)] A device for indicating tyre-deflation, of the kind described in Specification 333,782. [Class 144 (i)], and stated to be particularly applicable to twin tyres, comprises a rubber tube 1 fitted with end metal liners closed by rubber plugs 7, 8, the fitting of which compresses the air in the tube 1, and a pair of nested helical springs 3, 4. The springs, which are supported from the plugs 7, 8, are flexed by the bulging of the tyre to close an electric signalling-circuit.
Patent GB-239166-A (GB)
Title: Improvements in or relating to guiding devices for loom shuttles and the like
IPC: D03D49/60
Filed: 1925-03-25
Abstract: 239,166. Giehler, G. F. Aug. 26, 1924, [Convention date]. Shuttle races; shuttle guards. -The shuttle &c. is guided in the shed by pegs 12 with penetrating edges 13. Guiding-bars 11 on the pegs engage, slotted guides 10 on plates 3 provided with slots 4 engaging screws 5 on the lay. The plates are coupled together and are reciprocated on the lay by means of a rod 8, whilst the pegs 12 &c. are moved up and down by means of pivots 15 connected by rods 16 to pivot pins 17 on cranks 19 pivoted at 18 on the plates. The pins 17 are coupled together by means of a rod 20, which is reciprocated to cause the pegs &c. to rise and fall. As the lay moves back from the position A. Fig. 3, to the position C, the pegs move laterally as they move up and down and thus do not interfere with the movements of downwardlymoving warps. Curved guides may be used. Guiding-members for the upper shed are used similar to those shown for the lower shed. The shuttle may take a pile wire through the shed with it.
Patent GB-349677-A (GB)
Title: Manufacture of derivatives of meta-hydroxydiphenylamine
IPC: C07C215/82
Filed: 1930-03-12
Abstract: m-Hydroxydiphenylamine derivatives are obtained by condensing 1-methyl-2-amino-4-hydroxybenzene with aromatic amines not containing nitro, sulphonic, or carboxylic groups, in the presence of hydrochloric acid or an agent yielding it.  According to examples, 1-methyl-2-amino-4-hydroxybenzene is condensed with aniline, p-toluidine, and p-chloraniline to give the corresponding m-hydroxydiphenylamine derivatives.
Patent GB-724183-A (GB)
Title: Improvements in or relating to the balancing of relay armatures and like parts
IPC: H01H50/30
Filed: 1951-04-06
Abstract: 724,183. Electromagnetic relays. PETO SCOTT ELECTRICAL INSTRUMENTS, Ltd., VENNING, J. HILL-. July 4, 1952 [April 6, 1951], No. 8077/51. Class 38 (5). In a shock-proof electromagnetic switch having only one armature a weighted balancing lever 54 pivoted at 52 is coupled to the armature 26 pivoted at 29 in such a manner that the centre of gravity of the lever 54 moves in the same plane as and in the opposite direction to the centre of gravity of the armature and associated parts. In the form shown a link 60 connects the ends of the weighted lever 54 and the armature. In a modification, Figs. 1-3 (not shown) the weighted lever has a forked end engaging the pin 32 on the armature. The invention is shown applied to the relay described in Specification 724,182. Specifications 3098/10 and 281,926, [both in Class 38(v)], also are referred to.
Patent GB-698962-A (GB)
Title: A container for gift tokens
IPC: B65D77/00
Filed: 1951-04-09
Abstract: 698,962. Bon-bons. RICKARBY, W. A. April 8, 1952 [April 9, 1951], No. 8167/51. Class 132 (i). [Also in Group XVII] A bon-bon comprises a hollow cylindrical paper or like body forming a compartment having an opening in the wall for the insertion of a gift token, a sleeve to cover the opening and means to hold the sleeve in closed position. As shown, a bon-bon comprises a body 1 of suitably reinforced paper having waists 2, forming a compartment 3 for a token 4, and end tags 5. Token 4 is inserted through an opening 6 which is closed by a sleeve 7 slid over the body 1. A strip 8 of cardboard or the like is secured to the sleeve 7 with its ends 9 free so that they may be engaged in opposite ends of the opening 6 by sliding the sleeve 7 on until one end 9 is engaged and the other end 9 is within the opening 6 and then sliding the sleeve back so that both ends are engaged. Alternatively, the sleeve may be held in position by pressure-sensitive adhesive. The bon-bon may be perforated along line 10. The token is prevented from falling, after fracture of the bon-bon, by an elastic band 12 on a string 11, Fig. 1.
Patent GB-1154679-A (GB)
Title: Magnetic Field Sensing Device.
IPC: G01R33/06
Filed: 1968-02-20
Abstract: 1,154,679. Electric digital data-storage; magnetic heads. NATIONAL CASH REGISTER CO. 20 Feb., 1968 [13 March, 1967], No. 8182/68. Headings G4C and G5R. [Also in Division H1] An IGFET has its gate electrode suspended over insulation of reduced thickness and has a portion of the gate electrode consisting of ferromagnetic material so that the electrode may be mechanically deflected by an applied magnetic field. For a transducer responding to field strength irrespective of polarity the magnetic material may extend over all the gate electrode which may be cantilevered or fixed at both ends to the substrate insulation 12. In a construction in which polarity and intensity of a taped signal are to be sensed a single gate fixed at both ends bears opposed permanent magnets 42, 44 with a small gap 22 between them. The gate may be severed at the gap to produce a more responsive arrangement. In a memory element two " write " conductors 60, 62 are used together to produce facing south poles (" 0 ") on opposed magnets 56, 58 or to produce facing north poles (" 1 "), a signal being read out in the source-drain circuit by a current fed to one of the " write " conductors. The device may be an N-channel enhancement mode transistor formed in a lightly boron doped silicon substrate provided with oxide insulation and gold electrodes.
Patent GB-1024391-A (GB)
Title: Amidine derivatives
Inventor: AUGSTEIN JOACHIM
IPC: C07D319/20
Filed: 1964-02-27
Abstract: The invention comprises N,N-dimethyl-N1-(benzo - 1,4 - dioxan - 2 - ylmethyl)formamidine and pharmaceutically acceptable acid addition salts thereof and its preparation by reacting a complex of N,N-dimethylformamide and POCl3 with 2 - aminomethylbenzo - 1,4 - dioxan and treating the product with a strongly alkaline reagent to form the base and optionally converting the base into an acid addition salt.  Pharmaceutical compositions having hypotensive properties comprise the amidine of the invention or its salts with a pharmaceutical carrier.  The compositions may be formulated as tablets, capsules, elixirs, suspensions or solutions for parenteral injection.
Patent GB-835593-A (GB)
Title: Process and apparatus for removal of solids from polymer solutions
Filed: 1957-03-13
Abstract: Suspended solids are removed from a polymer solution by cooling the solution to a temperature at which a minor proportion of the polymer precipitates and the suspended solids are agglomerated, and separating from the solution the agglomerated solids.  It is preferred that the solution is cooled to between zero and 30 DEG  C. above the lower closed point of the solution, that it is agitated during cooling, and that its temperature is reduced in a plurality of partial cooling steps, e.g. by autorefrigeration.  After agglomeration of the solids the temperature may be raised to redissolve at least a portion of the precipitated polymer. Specified polymers are those of ethylene, propylene, isobutene, butadiene, styrene and their mixtures, preferably preferred by the use of chromium oxide, including hexavalent chromium as catalyst. Apparatus for carrying out the process is described.  U.S.A. Specification 2,837,507 is referred to.
Patent GB-139648-A (GB)
Title: Improvements in self releasing holders for screw cutting taps or dies
IPC: F16D7/02
Filed: 1919-04-02
Abstract: 139,648. Turton, W. April 2, 1919. Attachments for screwing and tapping. - A holder for taps or dies, particularly for use in a lathe turret, comprises members d, a clutched together by spring g and friction clutch d<2>. The turret is fed to a stop, and the member a feeds forward, slightly disengaging the clutch and rotating freely with the work. A ball race is fitted at f. Reference has been directed by the Comptroller to Specifications 10454/07 and 119,150.
Patent GB-678209-A (GB)
Title: Tool for cutting bevel gears having curved teeth
IPC: B23F21/22
Filed: 1949-03-28
Abstract: 678,209. Gear-cutting. FIAT SOC. PER AZIONI. March 28, 1949 [April 2, 1948], No. 8373/49. Class 83 (iii). Milling-cutters.-A tool for cutting curvedtooth bevel gears comprises a rotary head, a number of roughing cutters 1-12, Fig. 7, preceding one finishing cutter Fer, and two correcting cutters Ce1, Ce2 positioned ahead and past the finishing cutter so as to cut out the end portions of the tooth flank generated by the finishing cutter. The head also carries a finishing cutter Fir and correcting cutters Ci1 Ci2 for the adjacent tooth-flank. The tool thus cuts gears as described in Specification 650,111. In a tool, Fig. 8, for cutting a pinion to mate with a gear cut by the tool of Fig. 7, the cutters operate on opposite flanks of one tooth instead of opposite flanks of a space. The cutters are adjusted by wedges and may be inclined to prevent interference. A tool for cutting four consecutive flanks is also described.
Patent GB-975554-A (GB)
Title: Improvements in or relating to devices for detecting radio-active radiation
Inventor: BROWN JAMES ROBERT
IPC: G01T1/202
Filed: 1960-03-10
Abstract: 975,554. Radiation detectors. ELECTRIC & MUSICAL INDUSTRIES Ltd. March 10, 1961 [March 10, 1960], No. 8418/60. Heading G1A. A device for detecting radio-active radiation comprises a light-tight casing including a fluorescent screen 4 sensitive to said radiation and having at least one rectilinear edge (the lefthand vertical edge as illustrated), a light reflecting surface 3 on said casing facing said screen and a photo-sensitive device 8 having a photosensitive target 9, 10 disposed in said casing to receive light from the screen and reflecting surface, the target being so shaped so as to receive light from directions parallel to and perpendicular to said rectilinear edge and being of such extent and position that the response of the device to radiation incident near the extremeties of said edge of the screen is substantially the same as the response of the device to radiation incident near the centre of the screen. Preferably the screen 4 is square so that the device is suitable for detecting radiation at the corners of benches or the like. The photo-sensitive device is of the photo-multiplier type and is housed in a tubular extension 7 of the casing with the target end projecting into the casing. If the target extends into the casing about one-third of the distance along screen 4 to the rectilinear edge, the response to radiation at the extreme corners of the edge is about 90% of that to radiation at the screen centre. If the target extends half the distance, the response at the edge is more nearly equal to that at the screen centre, but the response to radiation at the other two corners, i.e., the right-hand corners, is reduced. The appropriate shape of the photo-sensitive target is obtained by arranging the target to extend not only over the end wall of the device as shown at 9, but also for a similar distance over the side wall, as shown at 10. If desired, the end wall, when viewed from the exterior, may be slightly convex. Where it is desired to detect a radiation, the screen 4 may comprise a zinc sulphide phosphor deposited on a methyl methacrylate support. Where it is desired to detect both α and # radiation, the screen comprises zinc sulphide and a fluorescent plastic phosphor. Over the screen is provided a light opaque screen of beryllium, aluminium or the material known under the Registered Trade Mark "Melinex" suitably aluminised. The assembly is completed by a protection grille 6 which is positioned over the screen as described in Specification 975,555.
Patent GB-625194-A (GB)
Title: Method of securing a chassis mounting electrical apparatus in a cabinet
IPC: H05K7/12
Filed: 1947-03-28
Abstract: 625,194. Radio receiving sets. KOLSTER BRANDES, Ltd., LOCK, C. E., and MORGAN, A. D. March 28, 1947, No. 8464. [Class 40 (v)] A means for securing a chassis for radio equipment or the like to a base in a cabinet comprises an angle bracket, the angle between the arms of which is less than a right-angle, attached to the chassis, a saddle attached to the base under which the angle bracket will slide when its projecting arm is brought parallel to the base by tilting the chassis, and means for securing another portion of the chassis to the base, whereby the projecting arm is pressed against the saddle and the base. As shown, the angle bracket 3 is secured to the chassis 1 the angle between the two arms being preferably not greater than 87 degrees and by tilting the chassis, may be passed under the saddle 4 secured to the base, the bolt 6 fixing the rear of the chassis and also causing the protruding arm of the bracket 3 to be firmly held between the saddle and the base. For a rectangular chassis two angle brackets and two bolted fixings would normally be provided.
Patent GB-1074823-A (GB)
Title: A screw extrusion machine for working and processing synthetic thermoplastic compositions
IPC: B29C48/38
Filed: 1965-02-26
Abstract: 1,074,823. Pug mills. O. FAHR. Feb. 26. 1965 [Feb. 29, 1964], No. 8482/65. Heading B1C. [Also in Division B5] An extrusion moulding machine, particularly intended for extruding synthetic thermoplastic material such as PVC, comprises independently driven impeller screws 1", 2", 3" arranged in series such that screw 1" precompresses the moulding material, screw 2", of larger diameter and slower speed of rotation than screw 1", plasticizes the material, and screw 3", of larger diameter and slower speed of rotation than screw 2", extrudes the plasticized material through nozzle 4. In the embodiment shown nozzle 4 is a perforated die plate which may be coupled to an adjacent cutting device to form an extrusion granulating machine.