baber/WOPTO huggingface dataset:
Patent GB-434847-A (GB)
Title: Improvements in or relating to the production of acid-resistant silicon-iron casting
IPC: C21C7/00
Filed: 1934-07-05
Abstract: Acid-resistant silicon iron castings are produced by melting pig iron in a shaft furnace &c., adding silicon or ferro-silicon to the molten mass, removing the graphite which separates from the molten mass, adding, in the solid form, low-carbon iron, low carbon ferro-silicon of low silicon percentage or a mixture of low-carbon iron with silicon or ferro-silicon and finally casting the finished alloy in moulds.  Only sufficient silicon or ferro-silicon may be added initially to cause the separation of the graphite, the rest being added after the graphite is removed. The silicon or ferro-silicon may be added to the molten pig iron outside the furnace &c. in which the latter is melted.  Other metals such as nickel or copper up to 3 per cent may be included in the alloys.  The upper limit of the silicon content is 25 to 30 per cent.
Patent GB-745010-A (GB)
Title: Improvements relating to the mounting of x-ray apparatus
Inventor: HOLLIS CHARLES PETER
IPC: A61B6/00
Filed: 1953-07-17
Abstract: 745,010. X-ray apparatus. METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. July 19, 1954 [July 17, 1953], No. 19934/53. Class 98 (1). An X-ray tube support mounted on a base for rotation about a vertical axis and having a radial arm carrying an X-ray tube capable of directing a beam of X-rays vertically, includes means for limiting the rotation of the support to an amount corresponding to the displacement of the tube required for stereoradiography. As shown in Fig. 1, a vertical tube support 1 is mounted by a thrust bearing 3 on a carriage 2 travelling on rails 10. A further thrust bearing 6 may be supported in a boss 8 on the base of the carriage, which also supports a locating disc 11. Disc 11 (Fig. 2) has four notches 12 with deeper central parts. An arm 14, pivoted on the tube support, is urged by a spring 16 into the central part of one of the notches, wherein it fits snugly. An electromagnet 18, when energized, lifts the arm 14 out of the central part into a position in which it is free to move along the whole length of the slot. This movement enables the tube to move through the distance required for stereoradiography. A second electromagnet 19, when energized, lifts the arm 14 completely clear of the notch.
Patent GB-813928-A (GB)
Title: Improvements in or relating to shielding devices for machining toxic and expensive materials and those having a critical mass
Inventor: ACKROYD RONALD TUNSTALL
IPC: G21F7/06
Filed: 1956-06-28
Abstract: 813,928. Turning dangerous and expensive materials. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Aug. 1, 1957 [June 28, 1956], No. 19999/56. Class 83 (3). A shielding device for use in machining toxic and expensive materials, and also for materials having a critical mass, e.g. uranium 235, comprises a tube 10, Fig. 1, having ends sealable with the chuck and tailstock of a lathe, and a longitudinal slot in the tube wall closed by a flap 15 deflectable around a, slide 17 to allow movement of the slide along the slot, the slide being perforated at 20 to carry a tool. A rubber sleeve 13 fits over the tailstock, and the tube may be made of polyethylene so that the operator may watch the cutting operation within the tube. The slide 17 is of part-elliptical form travelling between stops 24, and has an inner cover and an outer cover 19 which may be of brass. The slide opens and closes the flap by a double-acting fastener 16 described in Specification 723,998, [Group XXV]. A slight pressure differential can be maintained between the inside and outside of the tube to give the desired seal. The tube may also be provided with a drain through which swarf may be washed away by a cutting fluid, and the tube may be flushed with argon or other inert gas.
Patent GB-222840-A (GB)
Title: Improvements in and relating to locomotive boilers
IPC: F22B13/06
Filed: 1924-08-25
Abstract: 222,840. Schmidt'sche Heissdampf- Ges. Oct. 1, 1923, [Convention date]. Locomotive-type boilers; heating by indirect contact of steam.-In a locomotive boiler having a water-tube firebox 1, the firebox is not connected to the steam and water spaces of the boiler barrel 2, the steam generated in the firebox being led in a closed circuit through heating-tubes 10 in the barrel. The heating-tubes are placed above the smoke-tubes 9 and are connected to inlet and outlet headers 11, 12 which are connected to the top and bottom headers 5, 3 of the firebox. The outlet heads may be placed in the smoke box and connected to the lower firebox header through a surface feed-heater. The firebox tubes are divided iuto separate sets, which are connected to separate heating-tubes. Specification 195,989 is referred to.
Patent GB-259707-A (GB)
Title: Improvements in pedestals to support glass shelves
IPC: A47F5/04
Filed: 1925-08-10
Abstract: 259,707. Finlay, J. B. Aug. 10, 1925. Pedestal stands.-A stand for supporting a - glass shelf J consists of three telescopic rods B secured to a common base A and connected at their tops by a flat head E.
Patent GB-825187-A (GB)
Title: Improvements relating to ingot moulds
IPC: B22D7/06
Filed: 1957-06-27
Abstract: 825,187. Moulds. COMPAGNIE DE PONTA-MOUSSON. June 27, 1957 [June 28, 1956], No. 20280/57. Class 83 (1). The metal of an ingot mould is spheroidalgraphite cast iron and has a volume V 1  which is less than 0.79 x the inner volume of the mould. The cast iron consists of carbon 3.4- 3.7, silicon 1.8-2.4, manganese 0.25-0.5, phosphorus 0.03-0.10, sulphur 0.005-0.01, magnesium 0.05-0.08, percentages by weight, with remainder iron.
Patent GB-268628-A (GB)
Title: Machine for making grinding bodies for grinding mills
IPC: B23F1/04
Filed: 1926-08-17
Abstract: 268,628. Jorgensen, E. T. Aug. 17, 1926. Crushing and pulverizing apparatus. - In a machine for making grinding-members used in coffee or other mills a shaping-tool or milling- cutter is reciprocated over the work which is rotated during the cutting strokes and held stationary during the return strokes, thus producing a series of helicoidal cuts on the work. The shaping ram 4 carries a head 6 which is pivoted to the ram by a stud 7 and is provided with a bevel segment 8 coacting with a bevel segment 10 mounted on a pin 9 connected by links 11, 13 with a fixed pin 14. The tool 18 has its cutting edge in the axis of the stud and is mounted on a rotatable holder 16 provided with an arm 21 engaging a pin 22 secured to a bracket 23 on the ram. During the reciprocation of the ram the head is oscillated by the links 11, 13 and bevel segments and thus the tool is oscillated' about the axis of the stud 7. At the same time the tool is oscillated about a transverse axis by the engagement of the arm 21 with the pin 22. The blank 30 comprising a hollow truncated cone is secured over a conical member 28 on a hollow shaft 27 by means of a clamping-disc 33 on a spindle 31 which may be rotated from a handle 34. The shaft 27 is connected through bevel gearing 29 with a shaft 35 carrying a ratchet wheel operated by a pawl 39. The latter is actuated by a rod 40 secured to the ram and the blank is thus rotated on the cutting stroke of the tool. During the return stroke the blank remains stationary. The blank spindle is journaled in a frame 26 which is pivoted at 25 to the machine table 24 which carries a shaft 42 on which are secured lever arms 43, 44. The arm 43 is pivoted to a link 45 connected at 46 with the frame 26. The lever system is actuated by stops 48, 49 on a rod 47 which reciprocates in unison with the ram. During the cutting stroke the parts are in the position shown in Fig. 1, with the arm 43 engaging the fixed stop 50. At the end of the stroke the stop 48 engages the arm 44 and causes the frame 26 to swing downwards about the pivot 25 to hold the work clear of the tool on the return stroke. If desired, the rotation of the tool-holder 16 may be dispensed with by disengaging the arm 21 from the pin 22. In a modification, the relieving movement may be applied to the tool instead of to the work. The tool may be replaced by a milling-cutter journaled in the holder 16 and driven by a flexible shaft.
Patent GB-1123712-A (GB)
Title: Improvements relating to punches for thin materials
Inventor: CRAWFORD CHARLES IAN
IPC: B26F1/14
Filed: 1966-05-06
Abstract: 1,123,712. Punches and punching-appliances. FERRANTI Ltd. 24 July, 1967 [6 May, 1966], No. 20287/66. Heading B4B. A punch for piercing a hole in thin tensioned material such as paper is provided with a cutting end which defines the hole by curved or straight cutting edges having two or more spaced piercing points, and a pin which extends centrally from the cutting end so as in operation to pierce the piece of material bounded by those edges before the piece has been completely severed by them. In one form, the punch 10, Fig. 1a, is of square cross-section and is V- notched across one diagonal thereby providing at the diagonally opposite corners 11, 12 two points for initially piercing the paper, the points 11, 12 providing cutting edges 13 to 16, Fig. 1c, which slope away from the cutting end of the punch. A pin 17 extends centrally from the cutting end of the punch. In another form, the punch 10<SP>1</SP>, Fig. 4b, is of circular cross-section and is provided with piercing points 45 at opposite points of an elliptical periphery 46, Fig. 4c, to provide curved cutting edges which slope away from the cutting end of the punch. In a particular application, the punch 21, Fig. 2, is provided at the free end of an arm 22 which is oscillated in the plane of the paper about an axis 23. The paper is supported in the region of the punch by a pressure plate 31 having an arcuate slot 32 centred on axis 23. The punch records a sequence of holes 33. The punch is pressed into the paper at the appropriate times by an electrically-actuated presser bar 34. The punch is retracted from the paper after the hole has been made either by means of a coil spring (35), Fig. 3 (not shown), surrounding the punch (21) or by means of a cantilever spring (36) attached to the arm (22).
Patent GB-532121-A (GB)
Title: Improvements in or relating to automatic control arrangements for thermionic valves
IPC: H03L1/04
Filed: 1939-07-12
Abstract: 532,121. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and CLOUGH, N. H. July 12, 1939, No. 20346. [Class 40 (v)] A voltage greater than the running voltage is applied initially to the filament heating circuit of a valve, and is automatically reduced in accordance with an exponential law over a predetermined time. The valve may be the master oscillator of a radio transmitter, and the voltage may be reduced in order to reduce the frequency drift of the oscillator during the initial period of its operation. The voltage reduction is effected by a series resistor of nickel or iron, the resistance of which rises as its temperature rises. The resistor may be heated solely by the current flowing through it, or partly by an independent heater coil which is switched on simultaneously. The resistor and the heater may be wound on a skeleton frame, which may be fitted with a cover of adjustable height or ventilation in order to control the final steady value of the voltage drop in the resistor.
Patent GB-963187-A (GB)
Title: Vapour generator
IPC: F22B1/08
Filed: 1963-05-22
Abstract: 963,187. Multi-tubular steam boilers. COMBUSTION ENGINEERING Inc. May 22, 1963 [May 31, 1962], No. 20359/63. Heading F4A. A steam boiler heated by a heat transfer fluid such as pressurized water, steam or gases consists of a horizontal, cylindrical shell 11 containing a nest 23 of U-tubes which convey the fluid between inlet and outlet chambers 17, 18 and which is surmounted by a vertical cylindrical steam collecting drum 25 closed at the top by a dish-like cover 26 and at its lower end by a thickened portion 41 of the shell. In operation the shell is filled with water and steam-water mixture generated in contact with the tube bank rises through holes 28 in the shell portion 41 into a cavity 31 within a manifold 30, the mixture passing upwardly through pipes 33 to centrifugal separators 32. Separated steam flows to an outlet 35 through a drier 34 whilst separated water flows downwardly with feedwater admitted at 36 through a ring of holes surrounding the manifold 30 to re-enter the evaporating chamber, a pair of saddle plates 37 directing the flow to the bottom of the chamber.
Patent GB-947186-A (GB)
Title: Fluid flow control apparatus
IPC: G05D7/03
Filed: 1960-06-09
Abstract: 947,186. Fluid-pressure servomotor control systems. GARRETT CORPORATION. June 9, 1960 [ June 11, 1959], No. 20375/60. Heading G3P. A fluid flow control apparatus comprises a main flow control valve 11, a pressure responsive actuator 14 arranged to actuate the valve 11, a temperature responsive device 22 arranged to control the pressure supplied to the actuator and hence the setting of the valve to maintain constant the temperature of fluid flowing past the temperature responsive device 22 and a device 33 responsive to ambient pressure for varying the setting of the device 22. The valve 11 controls the flow of warm air through a duct 10 receiving cool air from a duct 12 upstream of the device 22 which contains a slide valve 26 actuated by an element 24 having a lower coefficient of expansion than an element 23 screw-threaded into the wall of the duct 10. The slide valve controls the flow through a restrictor 35 to vary the pressure on the actuator 14 and forms a movable seat for a hall valve 36 which lowers the controlled temperature when the ambient pressure falls, the ball valve being connected by a lever 50 to a diaphragm 44 subjected to the pressure changes in a chamber 60. These changes are greater than the ambient pressure changes and are produced by connecting the chamber 60 to the duct 10 through a pipe 34 and a diaphrugh actuated valve 60. One side of the diaphragm 64 is subjected to ambient pressure through an aperture 67 while the other side is subjected to the pressure in a chamber 65 communicating with the chamber 60 and the atmosphere through sonic nozzles 70 and 71.
Patent GB-960579-A (GB)
Title: Improvements in drill steel centralizers
IPC: E21B19/24
Filed: 1963-05-22
Abstract: 960,579. Percussive drills. ATLAS COPCO A.B. May 22, 1963 [June 12, 1962], No. 20454/63. Heading B4C. A centralizer for a percussive rock drill comprises a pair of guide jaws 42 movable between guiding and non-guiding positions by means of piston-andcylinder devices 22, 28 mounted on a support 21, the latter devices holding the jaws in both positions. The support 21 is secured to a tubular body 10 having an extension 11 which is provided with jaws 15 for clamping the support to the feed slide on which the percussive drill is mounted. The jaws 42, which are mounted on the ends of the piston rods 29, are formed with a central bore 49 for surrounding the drill steel 19, Fig. 3, during guiding thereof and, on the sides 52 of the jaws, with stepped portions 50. In operation, when it is desired to lengthen a drill, the jaws are opened by feeding pressurized fluid to one side of the pistons, via a valve 39, so that a coupling sleeve 20 may then be brought into position to be clamped by surface portions 54 on the jaws when the pressurized fluid is fed to the opposite sides of the pistons. The shank 17 of the drill is then unscrewed from the sleeve, an extension piece 19 fitted and the shank then screwed back into another coupling sleeve 20. The jaws are guided by means of lugs 55 engaging in corresponding recesses 56 and prevented from relative rotation with respect to the piston rods by means of tapered lugs on the rods engaging with tapered surfaces on the jaw.
Patent GB-210706-A (GB)
Title: Improvements in lenses for kinematographic and other purposes
IPC: G03B41/08
Filed: 1923-08-11
Abstract: 210,706. Buchner, O. Aug. 11, 1923. Kinematograph apparatus. -- In apparatus utilizing an annular lens for optical compensation of the movement of the film the plane of rotation of the film is set obliquely to the plane of rotation of the annular lens. The real image is thus produced in a plane intersecting the plane of rotation of the lens. The film also moves at right-angles to the light beam. The film 8, Fig. 1, is illuminated by a light source 6 through a condenser 7, and is moved by the sprocket 3' actuated from the shaft 5 by a wheel 3.' Mounted on the centre of this wheel 3 is the annular lens 4 producing an image of the film in the plane d, which image is projected on to the screen n by the lens 10. Various forms of the annular lens 4 are described, in all of which the outer spherical surface has a centre 1<1> eccentric to that of the centre 2<1> of the inner spherical surface. The lens shown in Fig. 2 is held in its mount by the thicker edge and is rotated about the axis a<11>. b<11>. Additional correcting elements 3<111> are fitted to the inner surface of the lens 4 and may be double convex as shown or concavo-convex. In a further modification, a second set of correcting elements is fitted. Specification 177,758 is referred to.
Patent GB-1022443-A (GB)
Title: Improvements in or relating to load supporting props assemblies
Inventor: GRAY THOMAS
IPC: E21D15/44
Filed: 1961-06-07
Abstract: 1,022,443. Multi-stage hydraulic pit props. W. E. & F. DOBSON Ltd. May 29, 1962 [June 7, 1961], No. 20486/61. Heading E1E. In a multi-stage hydraulic pit prop comprising an outer cylinder 1, at least one intermediate member 2 and an inner member 3, the member 3 is relieved through an external relief valve (not shown) incorporated in the supply line adapted to be connected to the inlet port 1d whilst the member 3 is relieved through an adjustable, internal relief valve 5. The valve 5 is adapted to operate at a pressure less than that of the pressure differential across the piston head of the member 2 so that the inner member 3 contracts before the member 2. The prop is also provided with a check valve 4 which may be screwed into the side of the member 2, see Fig. 2 of Provisional Drawings (not shown).
Patent GB-773803-A (GB)
Title: Automatic steering system
IPC: G05D1/08
Filed: 1954-07-14
Abstract: 773,803. Automatic steering control systems. BENDEX AVIATION CORPORATION. July 14, 1954 [Aug. 25, 1953], No. 20582/54. Class 38(4). In an aircraft control system the torque applied to a control surface in response to a control signal of a given magnitude is varied in dependence on the angular position of a trim tab associated with the control surface. In an aircraft automatic pilot, Fig. 1, a pick-off 11 associated with a gyro-vertical 13 produces, on pitch deviation of the aircraft, an A.C. output which is applied through a triode valve amplifier stage 29 to render one or other of triode valves 41 or 42 conductive, according to the sense of the deviation, so as to energize a control winding 72 or 73 of a saturable transformer 60 or 61. As a result, opposed secondary windings 67, 68 are unbalanced to produce an output which energizes one phase winding 77 of a two-phase servomotor 15 so that it runs in the appropriate to correct pitch by operation of elevator 22. A second two-phase servomotor 21 operates simultaneously to adjust the position of a trimming control surface 23 in the opposite direction and thus provide any force required to maintain any deflection of elevator 22 necessary to compensate for shift, forward or aft, of the centre of gravity of the aircraft. Servomotor 21 adjusts a rheostat 102 controlling the energization of the other phase winding 80 of servomotor 15 so that the maximum torque of the latter is dependent on the angular position of trimming control surface 23. In a modification, servomotor 21 adjusts a variable inductive transformer instead of rheostat 102 to control the energization of winding 80. A stabilizing follow-up signal is provided by a variable inductive transformer 85 adjusted by servomotor 15. Specification 671,336 is referred to.
Patent GB-307684-A (GB)
Title: Improvements in the soldering of conductors to small electric batteries
IPC: H01M50/528
Filed: 1928-07-16
Abstract: 307,684. Marks, E. C. R., (Batterien-und Elemente-Fabrik System Zeiler Akt.-Ges.). July 16, 1928. Galvanic battery electrodes.-The conducting members for small electric batteries, such as pocket lamp and wireless high tension batteries, are soldered to their electrodes by first dipping one or both ends of the conductors in molten solder to form beads or drop-like heads, and immediately or subsequently soldering them to the electrodes by the solder beads on the conductors. The conducting wires a for joining the zinc and carbon electrodes of adjacent cells are first tinned, then dipped at their ends in a flux such as sulphuric acid and then in molten solder such as an alloy of 40 per cent tin and 60 per cent lead to form beads b, b<1>. A contact spring d with a pointed end d<1> may similarly be provided with a solder bead. The wires and one contact spring are then soldered by a soldering-iron &c. to the zinc cells and, after assembling, the bag electrodes are inserted and the wires soldered thereto and a contact spring is soldered to one of the carbon electrodes.
Patent GB-371701-A (GB)
Title: Improvements in and relating to building blocks
IPC: E04B2/04
Filed: 1931-07-20
Abstract: 371,701. Walls ; building blocks. SWINGLER, E., 112, Hagden Lane, Watford, Hertfordshire. July 20, 1931, No. 20724. [Classes 20 (iv) and 87 (i).] A building block, Figs. 3 and 4, formed with a trough on its top surface and projections on its lower face adapted to enter the troughs and form a continuous grouting space is characterized by the fact that the projections 4 are of undulating or triangular form so as to displace the mortar across the joint. When the blocks are being assembled, the trough is filled level with mortar so that the projections of the blocks of the course above squeeze the mortar into the recesses 5 and between the bearing surfaces 2. This effect is augmented by making the recesses 5 overlap the bearing surfaces. The ends of the blocks are formed with projections and or recesses to form a joint for the reception of binding material. For attaching woodwork &c. wooden slats 7 may be fixed in the joints, or, after the wall is built, into cavities in the blocks.
Patent GB-484265-A (GB)
Title: Improved device for demonstrating light running of the working parts of agriculturalmowing machines
IPC: A01D34/00
Filed: 1937-07-27
Abstract: 484,265. Displaying. INTERNATIONAL HARVESTER CO. OF GREAT BRITAIN, Ltd. July 27, 1937, No. 20726. Convention date, June 17. [Class 3 (i)] [Also in Group XXVI] Means for demonstrating the free running of an agricultural mowing machine comprises a motor-driven fan 12 which directs a current of air on to a vane-wheel 11 mounted on the shaft of the fly-wheel 5 which carries the eccentric pin 6 for actuating the cutting mechanism 8. The spindle carrying the wheel 11 may be directly connected to the shaft of wheel 5 when the mechanism 8 is not shown in action, the pitman 7 being dismantled, or the spindle may be cranked to be attached to the pin 6 as shown. The clutch may be thrown in and the road wheels 3 of the mower jacked up to show them rotating, or the clutch may be disengaged, and the wheels 3 rest stationary on the ground.