baber/WOPTO huggingface dataset:
Patent GB-600639-A (GB)
Title: Improvements in straightening machines
IPC: B21D3/05
Filed: 1945-10-09
Abstract: 600,639. Straightening. BIGWOOD & SON, Ltd., J., PICTON, J. B., and TINLEY, E. L. Oct. 9, 1945, No. 26242. [Class 83 (iv)] A staggered roll machine for straightening sections &c. is provided at the delivery end with pinch rolls at right angles to the straightening rolls. The straightening rolls 13 are rotated through gearing from an electromotor. The pinch rolls 47 correct the work at right angles to the straightening rolls and are rotated by gearing 69, 77 from a shaft 78 rotated by an electromotor. The rolls are independently adjustable by screws 51, 52 from handwheels 61 and are carried in a frame 46 adjustable by a screw 91 from an electromotor. A correcting roll 29 vertically adjustable by a screw 32 rotated by an electromotor 41 to ensure work leaving the straightening rolls in a horizontal direction is mounted on a frame 28 adjustable by a screw 42 and electromotor 43. The frames 46, 28 move on a bed 26, 27 arranged to allow either of the frames to be moved to an inoperative position. Specification 600,638 is referred to.
Patent GB-260285-A (GB)
Title: Improvements in or relating to refrigerating apparatus
IPC: F25B15/02
Filed: 1926-03-24
Abstract: 260,285. Roos. G. March 28, 1925, [Convention date]. Refrigerating, absorption machines for.-In a continuous-cycle system having an inert gaseous medium such as air present in the absorber and evaporator, a combined evaporator and absorber chamber 2 is employed, which is fitted with a perforated annular gutter 22 at the top to receive the liquefied refrigerant from the pipe 3 leading from the condenser, and with a spiral channel or plates 23 projecting from the side walls to provide an extended surface for the, refrigerant. The weak liquor flowing from the generator 1 by the pipe 9 is delivered to the uppermost of a series of perforated trays 24 in the interior of the chamber 2 and the strong liquor is collected in a bottom tray 26 and returned through a pipe 8 to the generator. The machine. is described as provided with a chamber 5 and pipes 6 in the generator for circulating the liquor, as set forth in Specification 249,873. Specification 231.521 also is referred to.
Patent GB-887950-A (GB)
Title: Polyolefine film backings for pressure-sensitive adhesive tape
Inventor: AUBREY DEREK WILFRED
IPC: B29C71/04
Filed: 1959-07-31
Abstract: Polyethylene and polypropylene films are irradiated with ultra-violet light to an extent sufficient to reduce both the transverse and longitudinal elongations.  The irradiation effects cross-linking of the polymer molecules of the film.  The film may be pre-orientated, preferably longitudinally, so that the transverse elongation, before cross-linking, exceeds, and is preferably at least twice, the longitudinal elongation. Cross-linking may be effected in the presence of an activator sensitive to the ultra-violet radiation, e.g. a ketone, and the film may be impregnated with a solution of the activator (e.g. benzophenone in toluene) and dried prior to irradiation. Coloured films may be similarly treated.  The treatment improves the tear properties of the film, especially ease and regularity of transverse tearing.
Patent GB-463310-A (GB)
Title: Improvements in or relating to speed governors for internal combustion engines
IPC: F02D1/00
Filed: 1935-09-24
Abstract: 463,310. Fluid-pressure servomotorcontrol systems. HUNTER, H., and EVANS, A. F. Sept. 24, 1935, No. 26450. [Class 135] In speed - regulating apparatus for internalcombustion engines of the Diesel or semi-Diesel type comprising an engine driven circulating pump 3 taking its supply from the fuel tank and a hydraulic governor 10 which controls a fuel injection pump in accordance with variations in the flow of fuel through the closed circuit containing the pump 3, the fuel injec tion pump is connected to the closed circuit at a point intermediate a control valve 19 adjustable to vary the hydraulic resistance of the circuit and a loaded valve 25 between the control valve and the intake of the pump 3. As shown, the hydraulic governor comprises a piston 10 working in a cylinder 9 integral with the casing of a gear pump 3 which draws its supply through a filter 8 from the lower compartment 6 of a casing 1. The piston 10 is connected to a shaft 15 controlling the delivery of a fuel injection pump, and is loaded by a spring 12. The fuel injection pump draws its supply from an upper compartment 7 the fuel pressure in which is maintained a predetermined amount above that in the compartment 6 by a spring-loaded valve 25. The cylinder is formed with a series of ports 17 controlled by a piston valve 19 and a single port 16 which allows only sufficient fuel to leak from the cylinder when all the ports 17 are closed to maintain the piston at the upper end of the cylinder and so restrict the fuel supply to suit a desired idling speed of the engine. The desired engine speed is increased by raising the valve 19 by rotation of a manually operated shaft 23. The tapered end 20 of the valve gradually opens successive ports 17 so that the resistance to flow from the cylinder 9 decreases and the fuel supply increases due to descent of the piston 10. If then the load on the engine increases say, the engine speed and hence the pump speed fall so that the piston descends to increase the fuel supply and so accelerate the engine to the desired speed. To prevent undue pressure in the cylinder when the engine has a high speed and no load, as, in the case of a road vehicle, when travelling downhill, a spring-loaded relief valve 26 is provided. The stiffer the spring 12 the wider is the divergence of engine speed from the desired value. According to the Provisional Specification, the piston may have a bore co-operating with a fixed tapered rod or may co-operate with a cylinder having tapering grooves and is coupled to the engine throttle valve through a lever with a manuallyadjustable fulcrum.
Patent GB-601747-A (GB)
Title: Improvements in or relating to drill chucks and keys therefor
IPC: B25B33/00
Filed: 1945-10-10
Abstract: 601,747. Chuck keys. HINTON, J. C. Oct. 10, 1945, No. 26491. [Class 61 (iii)] A support for a chuck key consists of a sleeve 10 which acts as a bearing for the key and a further sleeve 15 perpendicular to the sleeve 10 which fits over the non-rotatable sleeve 16, Fig. 6, of the chuck. A key - hole slot 19 is formed in the forward end of the sleeve 15 allowing the support to pass over a drill &c. A hole 28 may be provided in the sleeve 10 for oiling.
Patent GB-963133-A (GB)
Title: Improvements in or relating to implements for working crop lying on the ground
IPC: A01D78/00
Filed: 1960-08-16
Abstract: The subject-matter of this Specification is included in Specification 963,131 but the claims differ.  Specification 963,132 also is referred to.
Patent GB-297981-A (GB)
Title: Improvements in spring motors
IPC: F03G1/00
Filed: 1927-10-07
Abstract: 297,981. Gramophone Co., Ltd., (Victor Talking Machine Co.). Oct. 7, 1927. Spring power-storing mechanism.-Clicking is prevented during the winding of a spring mctor by providing the pawl a with a lateral pin g which engages a slot h in a plate i consisting of two limbs held resiliently together by a spiral spring. A spindle k which rotates during the winding is gripped frictionally by the two arms and, when winding is started, the plate i is slightly rotated and lifts the pawl a out of contact with its ratchet wheel d. The reaction of the wound spring reengages the pawl when. winding ceases.
Patent GB-1301066-A (GB)
Title: Improved furnace for particular fuel
IPC: F23H9/02
Filed: 1971-04-19
Abstract: 1301066 Grates; boiler furnaces MACKAY CONVAIR HEATERS (AUST) PTY Ltd 19 April 1971 [13 April 1970] 26795/71 Heading F4B A furnace, particularly for a domestic radiator and hot-water system, comprises a hopper 11 allowing fuel to fall on to a grate 13 comprising upright co-axial discs, a fan 39 supplying air as shown at 40 to pass upwardly between the discs, and drive means to rotate the discs to carry fuel on their upper parts through a combustion zone bounded by a lip 36. A secondary combustion space 32 with water tubes traversing it, and a flue 33 are surrounded by a water space 56 supplying radiators 53, and a tank 57 within the space 56 and im. mediately adjacent the flue 33 supplies hot water taps 62. The grate 13, which may comprise plates 17, Fig. 7, carrying bars 18, or spaced toothed discs, Fig. 8, is driven by a rod 43 and eccentric pivot 44 from the motor driving the fan 39, Fig. 2. The connecting rod 43 is telescopic, a loading spring holding its toothed end in engagement with ratchet wheel 31 but allowing the pivot 44 to move if the grate becomes jammed. A pawl 51 prevents the grate moving backwards. A solenoid 52 operates to lift rod 43 and stop the grate when the temperature at thermostat 66 in the hot water tank reaches a predetermined level. The fan continues to run until the temperature reaches a slightly higher level. A pipe 67 with a flap valve 68 provides an air supply to the grate to prevent complete extinction of the fire, the valve 68 closing when the fan restarts.
Patent GB-1471000-A (GB)
Title: High speed railway bogies
Inventor: FAGEL ROGER
IPC: B61F17/20
Filed: 1974-06-17
Abstract: 1471000 Railway vehicle undercarriages ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI 17 June 1974 [19 June 1973 8 Feb 1974] 26802/74 Heading B7L  A railway bogie, intended to take up a position imparted to it by the orientation of an adjacent pair of vehicle bodies to which it is attached rather than by the track, comprises a chassis 1 through which extends, longitudinally of the bogie, a tube 6 mounted for rotation in bearings 7 at each end thereof; a pair of connection members 10 adapted to be attached to respective ones of said adjacent vehicle bodies of a train and coupled to respective ends of the tube 6 by respective connecting rods 9; and means for making the members 10 rigid for operation of the train at or above a predetermined value of speed but non-rigid for speeds below that value. One form of member 10 shown in Fig. 5 is an hydraulic cylinder 13 which is rendered rigid by the application of oil pressure to force its piston 14 to one end of its stroke, the oil pressure being cut off when speed falls below the predetermined value. Another form, Fig. 6, comprises a cylindrical body 16 closed at one end by a flat face of an electro-magnet 17 and containing a piston 22 of magnetic material having a corresponding flat face which is held in engagement with the face of the electro-magnet when the latter is energized to render the member rigid. The piston 22 has a rod 23 which extends through the other end of the body 16 to an eye 25 for  connection to the associated rod 9 and carries a spring 27 urging the piston 22 towards the electro-magnet 17.
Patent GB-502696-A (GB)
Title: Improvements in stationary mirror rings for television scanning devices
IPC: H04N3/08
Filed: 1937-10-05
Abstract: 502,696. Television. TRAUB, E. Oct. 5, 1937, No. 26937. [Class 40 (iii)] A stationary mirror ring scanning device consists of prismatic blocks 3 of trapezoidal crosssection with mirrors formed on or carried by the narrow end faces, the blocks being laid side by side within a shell 4 and held in position by pressure applied by the screw 5 against the free faces of the two end blocks. The reflecting surfaces of the blocks may be inclined differently or made concave, the several blocks then being displaced relative to one another in a direction parallel to the axis of the device. This latter arrangement is particularly suitable for use in secret television systems, since the blocks may be displaced axially, e.g. by inserting distance pieces between the underside of the blocks and the flange 4, to alter the scanning order. Specifications 419,120, 425,552, 440,055, 448,238, and 465,970 are referred to.
Patent GB-1218695-A (GB)
Title: Camera with triangulation range finding mechanism
Inventor: MUELLER ARTHUR CARL
IPC: G01C3/02
Filed: 1969-05-28
Abstract: 1,218,695. Focusing devices. BELL & HOWELL CO. May 28, 1969 [June 7, 1968], No.27020/69. Heading G2A. In the camera focusing arrangement of Specification 1, 218, 697 the pendulous member, after having been oriented at an angle to the optical axis determined by the "sighting" angle of the said axis, is locked in that position by a brake device. As shown, the pendulous member 31 swings freely on a pivot 32 secured to a support plate 44. The lens 24 is supported in a mount 23 which has a threaded extension 26 engaging in a threaded annulus 19, so that rotation of the lens mount moves the lens axially, to adjust the focus. A distance scale 29 on the mount 23 reads against a fixed index line 30. The brake lever 36 is pivoted to a bracket 37 supported from plate 44, and a compression spring 43 acting on one end of lever 36 urges its other end 40 against the pendulous member 31, this providing the braking action. Lever 36 can also be pivoted by a trip arm 45, itself pivoted to bracket 37 at 46. A stud 51 is secured to an annular extension 50 of lens mount 23, and when this extension is rotated to the position shown in Fig. 4, stud 51 engages a lug 49 of trip arm 45, and pivots it anti-clockwise as seen in Fig. 1. This in turn pivots lever 36 against spring 43, bringing the end 40 out of engagement with member 31, and so allowing the latter to swing freely. As the camera is sighted at the foot of the subject to be photographed Fig. 2, (not shown) member 31 orients under gravity to an angle relative to the optical axis which corresponds to the focal distance. By turning extension 50 slightly, stud 51 is disengaged from lug 49, so that the end 40 of lever 36 is now urged by spring 43 into breaking engagement with member 31, locking it in position. The camera can now be levelled into a picture-taking attitude without disturbing the angular relationship between member 31 and the optical axis. A spacer rod 53, slidable in a pair of ears 55 extending from bracket 37, is urged by a spring 56 to the left (as seen in Figs. 1 and 4), so that its end bears against extension 50, which is shaped as an inclined cam surface. Lens mount 23 (and hence extension 50) is rotated, so pushing rod 53 to the right, until its other end comes up against member 31. This has an exterior curved cam surface 35 so shaped that when rod 53 abuts against it, the lens will be in focus for that particular setting of member 31. (At the same time, the actual distance may be read off on scale 29. )
Patent GB-141628-A (GB)
Title: Improvements in or relating to phonograph horns or amplifiers
IPC: G10K13/00
Filed: 1919-11-03
Abstract: 141,628. Larsson, C. H. Nov. 3, 1919. Cases and stands.-The cabinet of a phonograph contains a horn 3 of rectangular cross-section, connected at its lower end to a sounding-board 4, and to a return bend extension formed by curved diaphragms 5, 8, and 6, fixed only at the ends but free of the walls of the cabinet for the remainder of their surface. The diaphragms are flat before insertion, and are sprung into position. The conduit 2 is formed of non-resonant material such as lead pipe.
Patent GB-339315-A (GB)
Title: Improvements in or relating to tell tale systems such as gas detection systems or the like
IPC: G05B11/01
Filed: 1929-09-05
Abstract: 339,315. Standard Telephones & Cables, Ltd., Chapman, S., and Mc- Whirter, E. M. S. Sept. 5, 1929. Tell-tale apparatus.-In a controlling, signal. ling, and alarm system adapted to maintain physical and chemical values (e.g. gas in a cable duct) by restoring said values to within predetermined limits if they are exceeded and giving an alarm if unsuccessful, periodic indications of the values are transmitted to recording apparatus comprising a step-by-step switch which is stepped or not depending on the indications. If the number of steps taken by the switch indicates prevalence of abnormal conditions over a period exceeding a given time, an alarm is operated. As applied to gas detection, a number of detectors 1 - - 5 are arranged in manholes in a section of cable duct or in suitable positions in a subway and, when gas exceeds a given value, open one or more contacts in a closed circuit including relay F associated with the section and a relay L at a recording station. Relay F falls back to close the circuit of a fan V. At the recording station, the circuit of magnet M of a stepping switch R is prepared periodically by a clock (say every 3 minutes) at contacts C. If relay L is operated (gas conditions normal), R is stepped. but the stepping circuit is opened by L when conditions are abnormal. At the end of an extended period of time, say 2 hours, the clock closes contacts D to home the switch. If the switch has missed more than a given number of steps, battery over D also lights lamp G, operates alarm 1 and energizes relay N which locks over a key RK to maintain the lamp and alarm. The switch may be arranged to step only when abnormal conditions prevail.
Patent GB-1174709-A (GB)
Title: A Symmetrical Polyphase Network
Inventor: GINGELL MICHAEL JOHN
IPC: H03H11/22
Filed: 1968-06-07
Abstract: 1,174,709. Active impedance networks; amplitude modulators. STANDARD TELE. PHONES & CABLES Ltd. 7 June, 1968, No. 27161/68. Headings H3R and H3T. A symmetrical polyphase network includes, in each phase, a frequency invarient reactance such that the network responds differently to input signals of negative and positive frequency. Such networks may be employed in N-path commutated circuits or as single sideband modulators. In one embodiment, Fig. 8 (not shown), comprising a two-phase network, the frequency invarient reactances are formed by two port gyrators (G3 . . . G6) having one port connected to each phase. In an alternative form, Fig. 14, the reactances are constituted by fourport networks which transform resistances into reactances (l: j transformers) 1 . . . 4. The circuit may also include negative impedance converters, Fig. 15 (not shown), to change the sign of the reactances. If the capacitors of Fig. 14 are omitted, the circuit of Fig. 14 non- stitutes an N-port gyrator. One form of i:j transformer suitable for a two-phase system, Fig. 9B, is a voltage shift type in which each phase includes a series transistor VT1, VT2, with the collectors of each transistor being connected to the base of the other, one connection being via a third transistor VT3. If impedances Z are connected across each output, impedances jZ will be seen looking into each input. The input and output connections may be reversed, Fig. 10B (not shown). The circuit may also be modified for current shift operation by connecting the input or output terminals to the bases of the series transistors, Figs. 11B, 12B (not shown). For three-phase networks, Fig. 22, 1: h transformers 11A . . . 11D are used, in which h represents a 2#/3 phase shift. Suitable transformer circuits comprise a series transistor in each phase, each having its base electrode connected to the collector of the transistor in an adjacent phase either directly, Figs. 16, 17 (not shown) or via emitter followers, Figs. 18, 20 (not shown). For four-phase operation l:j transformers may be employed which are similar in form to the l: h transformer of the three-phase system, Figs. 25, 26 (not shown). By suitably connecting the four outputs the circuits may be arranged to operate in a voltage or a current shift mode, and may transform by  j. A two-phase circuit which attenuates frequencies of one polarity and passes those of the other may be used as a quadrature modulator, Fig. 32. If an input carrier signal V is applied to one input port V 1 , and the other input port V 2  is earthed, then quadrature carriers are obtained at the two output ports V 3 , V 4 . These are then modulated with quadrature modulation signals in 7, 8 and the two modulated signals added to produce a single sideband output.
Patent GB-928563-A (GB)
Title: Improvements in and relating to flour mills
Inventor: BASS EMIL
IPC: B02C9/00
Filed: 1961-07-27
Abstract: 928,563. Grinding apparatus. MALOMGEPGYAR. July 27, 1961, No. 27217/61. Class 59. In apparatus for producing flour by means of pressure rollers and impact breakers, the width of the gap between each pair of pressure rollers is 0.6 to 0.01 mm. Each pair of pressure rollers preferably has its associated breaker mounted therebelow in such a way that compressed grain passes from the pressure rollers through a hopper under its own weight directly into the impact breaker. As shown in Fig. 2, the baffle plate 11 of the impact breaker is adjustable parallel to the axis of the breaker by means of three adjustable screws 12 and the plate 11 may have zones of different degrees of roughness. In Fig. 3, the grain passes from the pressure rollers 3 into a hopper 4 and thence into a chamber 14 terminating in a nozzle 15 to which compressed air is supplied by a pipe 16. The grain forced through the nozzle is thrown against a rotatable baffle plate 18. There may be two oppositely-directed nozzles leading from the chamber 14 and each faced by a rotatable baffle plate, the pipe 16 being perpendicular to the nozzles. The baffle plate(s) may be stationary. Specification 625,658 is referred to.
Patent GB-441717-A (GB)
Title: Improvements in or relating to methods of direct-current braking for three-phase motors
IPC: H02P3/24
Filed: 1934-09-22
Abstract: 441,717. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Sept. 22, 1934, No. 27269. Convention date, Sept. 22, 1933. [Class 38 (iii)] Non-regenerative braking.-For braking threephase motors, directcurrent is fed to the primary windings a, b, c, from a static contact rectifier k, one or more resistances d, e, t, being connected across the primary windings to prevent excessive voltage on the rectifier. In a modification of the arrangement shown two of the phases of the primary winding are directly short-circuited, and a resistance is connected between this short-circuit and the third phase. In a further modification choking coils of low saturation are connected between the points of connection of the rectifier circuit, and the phase windings. Two phases only may be connected through a choking coil and a resistance. A resistance and a choking coil may be connected to the primary circuit through a single-pole switch, or a circuit comprising a resistance and a choking coil may be permanently connected to the primary windings, the rectifier circuit being connected across the resistance by a single-pole switch for braking.
Patent GB-1107422-A (GB)
Title: Improvements in and relating to vessels for containing fluidised beds
Inventor: RONCA EDWARD
Filed: 1964-07-02
Abstract: Vessels for containing fluidised beds are formed with roughened inner surfaces, to prevent bubbling.  The inner surface may be covered with grit of 1/4 -\ba1/2 millimeter mean particle size bonded thereto by adhesive or plastic base paint, or by woven wire mesh of size 16-120 mesh, or by a fabric mesh or by expanded metal.  In this way the resistance to flow across the inner surface of the vessel is made not less than that through the body of the bed.  The bed may be used for plastic dip coating or for mixing powders contained therein.