baber/WOPTO huggingface dataset:
Patent GB-620414-A (GB)
Title: Improvements in relaxation oscillators and multivibrators
IPC: H03K3/08
Filed: 1946-07-26
Abstract: 620,414. Pulse generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd, July 26, 1946, No. 22258. Convention date. July 26, 1945. [Class 40 (vi)] The frequency of a relaxation oscillator is controlled by applying pulses via a variable capacitor to the input circuit of the oscillator valve so that small variations of the capacitor produce changes in the grid current of the valve and thus wide variations in the frequency of the oscillator. The figure shows valves 11 and 15 operating in a cathode-coupled multivibrator circuit. Negative synchronizing pulses at the input of an amplifying valve 55 are applied as positive pulses via the variable capacitor 59 and produce grid current in the multivibrator valves. Small variations in the value of capacitor 59 produce considerable changes in grid current and thus wide variations in the frequency of the pulses appearing at the output of the multivibrator.
Patent GB-883036-A (GB)
Title: Improvements in or relating to heels for boots and shoes
IPC: A43B21/38
Filed: 1959-06-30
Abstract: 883,036. Heels. CARNCROSS, A. H. Sept. 15, 1960 [June 30, 1959], No. 22346/59. Classes 17(2) and 17(3) The wearing surface of a heel 10 is provided by the head 13 of a screw 12 which extends through the heel and is located at its other end by a plate provided in the heel adjacent the top thereof. As shown the heel is moulded integrally with a shank 11, and the screw 12 is threaded into a hole 14 in a metal plate 15 embedded in the heel and shank. Alternatively the screw passes through an unthreaded hole in the plate and engages a nut which abuts or is secured to the plate. The heel, which may be separate from the shoe, may be formed of other material, e.g. wood. The plate may be located in the heel only and may locate the screw by means of a bayonet joint.
Patent GB-981434-A (GB)
Title: A method of and a device for cutting paper strips from an endless band and transferring them to cigarette-making machines
IPC: A24C5/47
Filed: 1961-06-21
Abstract: 981,434. Cigarette-making machines. ZAVODY V. I. LENINA PLZEN NARODNI PODNIK. June 21, 1961 [June 27, 1960], No. 22383/61. Heading A2C. In a method of cutting paper strips from a continuous band of paper and for transferring them to a cigarette making machine for further processing, the feed device for  the paper strip performs a continuous, periodic motion, whereby at the instant of transfer of a strip from a feed drum the peripheral speed of the drum is modulated to a speed equal to that of a cigarette that is to receive the strip, while at the instant of cutting the peripheral speed of the feed drum is less than that momentarily acquired at the instant of transfer but greater than the speed of the continuous band from which the paper strips are cut. A feed drum 1 is rotatably carried on a hollow shaft 2 and is rotatable in a bush 4. Suction is applied to the surface of the drum 1 via passages 23, 22, 21, 5 and 3 between the time the strips are cut and the time they are transferred to the cigarettes on a drum 24. A rotating cutter head 7 is driven in synchronized motion with the feed drum 1 as by gears 14, 15. The cutter head 7 is provided with blades 8 yieldingly pivoted on pins 9. To modulate the speed of the shaft 2, a sprocket 30, integral with a plate 32, is rotatably mounted on a shaft 31. The plate 32 is connected through a spindle 33 with a toothed segment 34 having an arm 35 provided with a cam follower 36 which runs in a cam track 37. The segment 34 meshes with a pinion 35 carried by shaft 31 and the shaft 31 meshes through gears 38, 39 with the shaft 2.
Patent GB-1069087-A (GB)
Title: Polyamides
IPC: C08K13/02
Filed: 1964-05-29
Abstract: Polyamides containing silane end groups are obtainable by the anionic polymerization of a lactam having at least 3 carbons in the lactam ring in the presence of an organic silicon compound having (i) a group convertible in the presence of water to -Si(OH)x, where x is 1, 2 or 3 and (ii) a group -OH, -NH2, -NHT, -COOT, -CONHT, -NCO, <FORM:1069087/C3/1> -NH.CO.NH2 or -NH.COOT, where T is C1- 8 alkyl, separated by at least C2 alkylene or by phenylene. The silane end groups may be -Si(OT)3, -SiHa3, -SiT.(OT)2, -SiT.Ha2 -Si(OH)3 or SiT.(OH)2.  Various lactams, anionic catalysts and initiators are specified. Preferred initiators are mono-and di-isocyanates together with an aminoalkoxysilane.  The silane end groups are stated to improve the adherence of the polymers to glass and other siliceous materials, cellulosic materials and alkalinepretreated metals.  They may thus be used as an interlayer in sandwich safety glass or as a safety coating on television tubes, flash-bulbs and laboratory glassware or as a size for glass fibres.  They may also be spun into fibres.  The incorporation of lithium salts therein increases their transparency.ALSO:Polyamides having silane end groups (see Div. C3), which may be -Si(OT)3, -SiHa3, -Si T.(OT)2, -Si T.Ha2, -Si(OH)3 or Si T.(OH2) where T is C1-8 alkyl, adhere well to glass, other siliceous materials, cellulosic materials and alkaline-treated metals.  In the Examples films of the polymers are coated on glass sheets.  Specified applications are as an interlayer in sandwich safety glass, as a safety coating on television tubes, flashbulbs and laboratory glassware, or as a size for glass fibres.  The inclusion of a lithium salt increases the transparency of the polymer.
Patent GB-442145-A (GB)
Title: Improvements in steam traps
IPC: F16T1/38
Filed: 1934-08-01
Abstract: 442,145. Steam traps. GERDTS, G. F., 31, Markusallee, Bremen, Germany. Aug. 1, 1934, No. 22483. [A Specification was laid open to inspection under Sect. 91 of the Acts, Feb. 2, 1935.] [Class 64 (ii)] A steam trap comprising an inlet a, an automatically operated main valve 1 discharging through a passage (not shown), communicating with a main outlet k, is provided with a manually operated auxiliary valve g passing through a partition wall m interposed between the seatings i, l<1> of the valve and isolating the inlet from an auxiliary outlet kl, and with a pipe n leading from the bottom of the trap to the side of the partition wall on which the auxiliary outlet is situated, so that when the valve is moved into an intermediate position mud or excessive condensate is discharged through the pipe and the auxiliary outlet by steam admitted through the inlet of the trap. In a modification, a second partition wall s, Fig. 5, is provided between the partition wall m and the auxiliary outlet kl, through which the auxiliary valve also passes, the space between the wall s and the auxiliary outlet being in communication with the highest part of the trap through a passage t so that on raising the valve slightly off its seating l<1> air trapped in the vessel is discharged. The condensate may be delivered through an open pipe either into a conduit with a funnel-shaped inlet to give visible indication of escaping steam or into a whistle to give audible warning.
Patent GB-281413-A (GB)
Title: Improvements in needle looms for weaving
IPC: D03D35/00
Filed: 1926-09-13
Abstract: 281,413. Mutzberg, E. Sept. 13, 1926. Weft-inserters not carrying bobbins and the like, looms with; smallware looms.-In needle looms for weaving ribbons and other fabrics. the needles 23 for introducing the wefts F in loop form are carried by blocks 25 slidable on guide rods 16 carried by slides 15, which are moved backwards and forwards in slideways 14 by lever mechanism 19, 18, 20 and a grooved cam 12, The slides 15, the blocks 25 and the needles are thus moved backwards and forwards. The needles are also moved laterally with their blocks 25 on the rods 16 to insert the wefts by cams 26 having grooves 27 engaging rollers 28 on the needle carrier blocks 25. The cams are mounted on a shaft 29 mounted in stationary bearings, but are large enough to allow for the forward and backward movements of the blocks 25, which make two backward and two forward movements for each complete lateral or right and left movement, one of these forward movements occurring with the needle in the shed. Stationary guiding reeds 22 are used. Forming selvages. The loops f of inserted weft are locked to form selvages by means of locking- threads L guided in the eyes 33 of lifters 34 on a bar 35 supported by cam-controlled arms 36, loop portions of the threads L being engaged by the hooks of knitting-needles 39 and drawn through the loops f. The needles 39 are moved horizontally by a needle-bar 50 carried by arms 47 actuated bv cam-controlled rods 46. The knitting-needles 39 have the usual hooks and latches.
Patent GB-986180-A (GB)
Title: Improvements in or relating to tracked or wheeled vehicles
IPC: B62D55/06
Filed: 1963-06-07
Abstract: 986,180. Tractors. E. FOSCHINI. June 7, 1963, No. 22689/63. Headings B7B, B7D and B7H. The wheels of a vehicle or tracks of an endless track vehicle are mounted in frames 1 which are connected together by a pair of telescopic tube arrangements 2, 3, adjustable as to length by means of a screw 4. The vehicle body rests upon forwardly disposed projections 10 and is pivotally mounted on rearwardly disposed projections 10 about which it may be tilted for unloading purposes by means of an hydraulic jack 8 and bell crank levers 7, 6, 9 pivotally mounted on the forward telescopic tube arrangement. The vehicle is hydraulically driven and may be controlled from a seat connectible to the vehicle by means of eyes 11. In a modification, Fig. 4, the telescopic tube arrangement comprises a pair of right angled members 3<SP>1</SP> and 4<SP>1</SP>, the upper limbs of which form the telescoping arrangement and the vertical limbs of which form housings for right angle members 7<SP>1</SP> and 8<SP>1</SP> to which the track frames are attached, the arrangement permitting vertical adjustment of the vehicle height relatively to the body.
Patent GB-203505-A (GB)
Title: Improvements relating to two-stroke internal combustion engines
IPC: F02B25/00
Filed: 1922-08-21
Abstract: 203,505. Knudsen, C. H. Aug. 21, 1922. Pistons, cooling.-In an inverted- V type of internal-combustion engine having a common combustion chamber to each pair of cylinders 24, 25, part of the scavenging and charging air is passed through the interior of the pistons 47. The pistons are formed with transverse partitions 50 forming chambers 49, which are divided by ported vertical partitions 53 and formed with ports 51, 52, through the former of which air is admitted through cylinder ports 39 from pipes 42, while the latter communicate through cylinder ports 40 with a common central chamber 44, 45 having ports 46 leading to the inlet ports 29 of the cylinder 24.
Patent GB-875691-A (GB)
Title: Improvements in or relating to motor-driven vehicles
IPC: B60K17/36
Filed: 1958-07-15
Abstract: 875,691. Motor vehicles. MEILI, E. July 15, 1958 [July 16, 1957; Oct. 17, 1957], No. 22732/58. Classes 79(1), 79(2), 79(3) and 79(5). [Also in Group XXXII]  A motor vehicle for surmounting obstacles comprises wheeled front and rear sections 5, 7 and 6, 8, respectively, so coupled to a horizontal wheeled axle 2 or to a central section 1 embodying such an axle that the angle between the longitudinal axes of the sections may be varied by hydraulic means which may also lock the sections in their adjusted positions. The wheels are driven by chains or shafts or pneumatic or hydraulic means from an engine in the unit 1. In an alternative construction, the sections are pivotally connected to the axle 2 and have centrally pivoted auxiliary units at their outer ends to carry the wheels. The front sections may be pivoted to an auxiliary axle or be replaced by a pair of sections of different lengths. Fig. 11 shows a further embodiment in which the wheels are carried by units 44, 45 pivotally connected with frame halves 40, 41 one of which may be rigid with the central section 1 while Fig. 12 shows a modification of this embodiment having endless tracks 55 and 56 and hydraulic  cylinders 57 to raise the rear half frame. Steering is effected by braking one track. In further embodiments front and rear wheeled sections are pivotally connected to a central section having twin driven axles or endless tracks and provided with a body, which may be in swivellable halves, extending over the front and rear wheels. The front wheels 105, Figs. 18 and 19, may be independently sus pended and be driven through a differential gear and a transmission 111 from a differential gear 104 for the centre wheels 106. The rear wheels 107 are mounted on pivoted arms 113 and chain driven from the wheels 106. An engine 102 drives the differential 104 and two oil pumps 121 supplying hydraulic cylinders 130, 131 forming part of the front wheel suspension and cylinders 124, 125 for pivotal actuation of the arms 113. An arrangement of valves enables the cylinders on one side of the vehicle to be disconnected from those on the other side, the two rear cylinders from those in front and the front cylinders from one another. The front wheels may thus be lowered individually or together while the rear wheels may be raised or lowered individually or together. In addition, all the cylinders may be placed in communication and the system subjected to the pressure of mechanical springs 140, 141 to form a joint suspension. The underside of the vehicle may be closed by a tub-like casing and the central section may be fitted with endless tracks. The invention may be applied to a mount for a gun.
Patent GB-1141473-A (GB)
Title: Providing electrical signals able to be used for the discontinuous control of concentrations and/or signalling concentration deviations of mixtures and solutions
Inventor: JUNGE HANS-DIETER
IPC: H03M1/00
Filed: 1966-05-23
Abstract: 1,141,473. Programmed control of chemical processes. CHEMIEFASERWERK "FRIEDRICH ENGELS", VEB. May 23, 1966, No. 22896/66. Heading G3N. [Also in Division G1l Electrical signals, indicative of whether a physical or physico chemical property of a material is above or below a limit value, are provided by on/ off evaluation of the property of a quantity of the material added to a chemical reagent in a mixing vessel, the result being stored as an on/ off signal and the mixing vessel emptied the operation being repeated periodically and the stored information retained until the completion of the next operation and is available for control or signalling of the concentration of a solution or mixture. As shown. Fig. 1, a titration apparatus comprises a proportioning container 2 for the material to be measured and a proportioning container 3 for the titration medium, containing a colour indicator, which are filled through magnetic valves 4, 5 and emptied through magnetic valves 6, 7, into a mixing chamber 1. The proportioning containers are provided with electrode pairs 10, 12; 14, 16 for determining the level to which they are filled. The electrode 16 is adjustable to set the desired limit value. The mixing chamber 1 is mounted below the proportioning chambers and contains a stirrer 20. A colour change occurring in the mixing chamber is determined with the aid of a photo-electric device 21 a colour filter 22 being situated in the light path. The mixing vessel has an outlet which is opened or closed by a magnetic valve 23. A programme controlled electric system, Fig. 2, for the titration apparatus is sequentially controlled by a programme transmitter 27 which controls level controls 25, 26 to fill containers 2, 3 through magnetic valves 4, 5, to levels determined by the electrodes 10-16. Subsequently the transmitter 27 controls the emptying of containers 2, 3 through valves 6, 7 into the mixing chamber 1 and, by a monitoring device 28, evaluates the attainment of a predetermined transmissivity to light, with the aid of the photo-electric device 21. Finally, the transmitter 27 controls the emptying of the mixing chamber 1 through the valve 23 and the transfer of the evaluation to a store 29 from which it is given up as an on/off signal. A number of examples are set out in the Specification relating to multi-component titration and the measurement of pH and electrical conductivity.
Patent GB-676495-A (GB)
Title: Method and apparatus for filtering air suspensions of negatively charged dusts
Inventor: SHELDON WILLIAM MALLORY
IPC: B01D46/04
Filed: 1950-09-19
Abstract: 676,495. Filtering gases. PULVERISING MACHINERY CO. Sept. 19, 1950, No. 23015/50. Class 8 (ii) A self-cleaning air filter for negatively charged dusts, comprises a filter element 10 formed of flexible sheet material, a duct 15 or other means for supplying dust-laden gases to one side of the element at a pressure greater than that on the other side, a tubular member 12 pressed against the low-pressure side of the element and having a slot 13 therein through its side contacting the element, a flexible tube 14 or other means for supplying relatively high pressure gas to the tubular member for discharge through the slot, and means e.g., endless chains 18, 20 attached to the tubular member and driven by a motor 31 controlled by trip switches 32, 33 actuated by the member 12 for reciprocating the tubular member in a path parallel to the outer surface of the element 10. When distended, the materials composing the surfaces of the filter element and the tubular member are such that the reciprocation of the latter over the former produces a negative charge on the filter element. The filter element may consist of felt treated with resinous material and the tubular member be of metal such as brass or steel. The filter element may be impregnated with waterrepellent binding material.. Specification 676,510 is referred to.
Patent GB-890522-A (GB)
Title: Improvements in or relating to variable speed gears
IPC: F16H29/22
Filed: 1959-07-06
Abstract: 890,522. Variable-speed ratchet gearing. BRADBURY, G. H. Oct. 5, 1960 [July 6, 1959], No. 23177/59. Classes 80 (2) and 80 (3). In a variable-speed ratchet gear in which planet pinions 19 meshing with an output sunwheel 20 are rotated by friction ratchets 26 operated by links 18 connected to a variablethrow crank-pin 15a, e.g. as described in Specification 700,904, the ratchets are actuated by curved levers 27 connected to the links 18 at points 28 lying on the remote sides of the axes of the ratchet drums 22, thereby enabling an increased leverage to be exerted on the friction elements 26. Specification 723,250 also is referred to.
Patent GB-990914-A (GB)
Title: Improved method and apparatus for producing working gas for heat engines
IPC: F02K7/04
Filed: 1961-06-27
Abstract: 990,914. Oscillating column combustion chambers. H. C. KLEIN. June 27, 1961 [June 29, 1960], No. 23210/61. Headings F1G and F1L. Oscillating gas column combustion apparatus comprises at least one detonation chamber 1, a conduit 3 connecting the chamber 1 to the chamber 2, a non-closable inlet 6 in the conduit admitting air or fuel-air mixture to the detonation chamber 1, an outlet 5 connected to the second chamber so that only a portion of the gases passes to a heat engine, the arrangement being such that a quantity of air or airfuel mixture is sucked into the inlet due to varefaction in the wake of the pressure wave produced in the detonation chamber and reverse pressure wave creating means 4 for creating a reverse pressure wave which can travel to the detonation chamber from a location on the far side of the inlet. In a modification, the pressure wave creating means comprises a second detonation chamber. One or more identical chambers may be arranged around a detonation chamber or a plurality of pairs of detonation chambers arranged around a common intermediate chamber in star-like formation. The outlet 5 is provided at the point where the maximum periodic mean value of the pressure occurs and the air inlets 6 are arranged at those points at which the minimum periodic mean value of the pressure occurs and are so located that the detonation wave has no effect on the inlet but the returning pressure waves exert a suction effect thereon. The fuel may be injected into the detonation chamber in a tangential direction. A preheatable separate detonation chamber may be provided for starting purposes. The fresh air may be pre-compressed. A number of combustion chambers may be arranged in series. The combustion chambers may be arranged in series. The combustion chambers may be provided in a turbine rotor, the rotary axis of which is the axis of symmetry of the combustion chambers. In this arrangement the fuel is introduced axially and flung by centrifugal force against the walls of the chambers.
Patent GB-470672-A (GB)
Title: Improvements relating to mechanism for feeding and winding films
IPC: G03B21/32
Filed: 1936-08-24
Abstract: 470,672. Kinematograph apparatus. SCHALIE, H. VAN DER. Aug. 24, 1936, No. 23228. Convention date, March 10. [Class 97 (i)] Mechanism for feeding and winding endless films or the like comprises two or more concentric discs carrying the film, the outer discs being driven by friction at a slower speed than the inner disc and the slip in the drive being regulated automatically by the weight of film carried by the several discs. As shown in Fig. 2, a driven shaft 1 has a boss 2 supporting a friction disc 5 on which rests a bridge 6 carrying an outer disc 7 concentric with a disc 10 resting on a friction disc 9 and having a collar 13 carrying a pin 14 engaging a slot 15 in the shaft. The edge 11 of the disc 10 supports an intermediate disc 17 by engagement with its inner edge 12. Thus the slip in the drive of the disc 7 is determined not only by the weight of film on the disc, but also by the weight of film on the discs 10 and 17. In a modification the disc 17 may be omitted. To maintain the roll of film in its correct position on the discs and to allow different lengths and widths of film to be employed the apparatus shown in plan in Fig. 4 is used. A bridge 21, vertically adjustable on pillars 18, 19, supports an arm 22 bearing guides 25, 26 resting on the upper edge of the film, and guide bars 27, 30 having rollers 29 engaging the edges of the roll of film to maintain it in a central position. The bar 30 is pivoted about the pillar 19 and carries a roller 32 which guides the film to the outer convolution, the film being fed from the inside of the roll over guides 23, 24. The arm 27 thus engages the film only when the largest roll is in use, the arm 30 being adjusted to engage smaller rolls. The rollers 29 are adjustable along the bars 27, 30 and the apparatus may be used for sound films or for films bearing magnetizable particles of metal. Specification 401,590 is referred to.
Patent GB-239714-A (GB)
Title: Improvements in devices for drying hay, straw and the like products
IPC: F26B9/10
Filed: 1924-10-02
Abstract: 239,714. Tinker, C. Oct. 2, 1924. Crops, storing.-Hay, straw and like products are stacked for drying around a partitioned conical flue, formed of wire netting and containing heating coils, over which the drying medium is forced from a duct 10.