baber/WOPTO huggingface dataset:
Patent GB-870754-A (GB)
Title: Improvements in or relating to electric arc welding apparatus
IPC: B23K9/12
Filed: 1957-08-22
Abstract: 870,754. Automatic arc control systems. ROCKWELD Ltd., and BOAG, J. W. D. July 23, 1958 [Aug. 22, 1957], No. 26550/57. Class 38 (4). [Also in Groups XXII and XXXVII] In an arc-welding system in which a consumable electrode is fed by the output of a differential driven by D.C. motors, the speeds of the motors are varied in opposite sense in dependence on the variation of magnitude and phase, relative to a reference signal, of the arc voltage or current. As shown, a welding electrode 1 is supplied from a transformer 20 through an adjustable choke 25. A voltage across an arc 5 is opposed by an adjustable backing voltage derived from an auto-transformer 44 supplied from a transformer 42, and the vectorial resultant of the arc voltage and backing voltage is fed as a control voltage to a winding 40 on a centre-limb of a transformer 36. A flux #r due to the control voltage varies a flux #p due to a current in primary windings 37, 38 so that for an instantaneous flux direction as shown, a flux # 2  less than # p  passes through a secondary winding 32 and a flux #1, greater than #p passes through a secondary winding 33. The induced secondary voltages are rectified by bridge rectifiers 30, 31 and applied to the armatures 11, 12 so that for the flux directions shown the speed of an " Up " motor is greater than that of the " down " motor and the welding electrode is moved away from a workpiece 4. Fields 15, 27 are connected in series across the total rectified voltage. Field 27 is shunted by a resistor 60 so that at start, with electrode 1 touching the workpiece, the higher torque of motor 11 moves the electrode away from the workpiece; during welding, for equal rectified voltages the speed of the " down " motor is higher than that of the " up " motor due to the resistor 60 and the setting of the tap on a resistor 28. In another embodiment, Fig. 4 (not shown) transformer 20 is supplied across the Red and Green phases, transformer 42 across the Red and Blue phases, and transformer 36 by the Blue phase. In a further embodiment, the arc current feeds winding 40 through a current transformer. The three-limb transformer may be replaced by two separate transformers.
Patent GB-835027-A (GB)
Title: Improvements in and relating to sealing compositions and packing arrangements therefor
Inventor: BRIANT JOHN HENRY
IPC: B65D57/00
Filed: 1956-08-31
Abstract: A putty-like composition, suitable for sealing, caulking or glazing, comprises in one form (parts by weight) G1 R-s latex (0-20), blown castor oil (90-140), polypale resin (50-110), paraffin wax (0-10), asbestos fibre (50), pigment (50) and kaolin clays (300) and in another form polypale resin (60-70), castor oil (130-120), kaolin clay (300), silica (200) and lithophone (50).
Patent GB-1392387-A (GB)
Title: Method for the manufacture of chipboard panels in a multi-deck heating press and press for performing such method
IPC: B30B15/06
Filed: 1972-06-08
Abstract: 1392387 Multi-deck and column presses BECKER & VAN HULLEN NIEDERRHEINISCHE MASCHINENFABRIK 8 June 1972 [8 June 1971] 26728/72 Heading B5A Distortion of the upper platen 4 of a multideck or column press due to deck heating pipes 16, 17 expanding neighbouring frame posts 2, 2a to a greater (posts 2a) or lesser (posts 2) degree is prevented by ensuring that the temperature of all of the frame posts 2, 2a is kept the same. This may be achieved by passing a heating medium through channels (18, Fig. 3) in posts 2 and/or passing a cooling medium through channels (18) in posts 2a. Alternatively, the posts 2 may be electrically heated. In the former case the channels (18) on at least one longitudinal side of the press may be interconnected to form one or more closed systems. The heating medium passing through the pipes 16, 17 may be passed through the relevant channels in posts 2. The channels (18) may be formed by plates or tubes attached to the posts 2, 2a. The decks 5 may be raised simultaneously via a common linkage (8-11, Fig. 1) attached to a lower platen (7) actuated by a piston (6) so that layers of chipboard material 12 may be pressed therebetween.
Patent GB-369528-A (GB)
Title: Process for the manufacture of di-iodo-chelidamic acid
Filed: 1931-09-25
Abstract: Diiodochelidamic acid is obtained by iodinating in a solution alternately rendered acid or alkaline at boiling temperature. According to an example a solution of chelidamic acid in caustic potash is treated with powdered iodine at boiling temperature followed by acidifying and the procedure is repeated until no further iodine is taken up.  The product and its salts may be used as contrast media in X-ray photography.ALSO:Salts of di-iodochelidamic acid are used as contrast media in X-ray photography.
Patent GB-1151406-A (GB)
Title: Improvements in or relating to Gas Chromatography
IPC: G01N30/30
Filed: 1967-06-09
Abstract: 1,151,406. Gas chromatography. SIEMENS A.G. 9 June, 1967 [10 June, 1966], No. 26869/67. Heading B1L. Components of mixtures separated by gas chromatography in column la are eluted with the aid of one or more travelling furnaces 2, 7 which create local hot zones in the column. At the foot of the column, a device 8 produces a stationary cold zone. Furnaces 2, 7 are transported by pulley and cable device 5, 6. the rates of travel in the upward and downward directions generally being different. In a modification (see Fig. 3, not shown), column (1') is helical, and furnaces (2', 7') are rotated about a spindle, the screw pitch of which is the same as that of helical column (1') If desired, furnace 7(7') may be replaced by a device producing a travelling cold zone. The furnaces may comprise induction or radiant heaters and may be so constructed e.g. in frustro-conical form, so as to produce a required temperature profile within the hot zone.
Patent GB-785834-A (GB)
Title: Improvements in and relating to liquid quantity measuring apparatus
IPC: B64D37/00
Filed: 1954-09-17
Abstract: 785,834. Electric tests. MINNEAPOLIS-HONEYWELL REGULATOR CO. Sept. 17, 1954 [Sept. 28, 1953], No. 27035/54. Class 37. The height of liquid in a fuel tank 10 is determined by a capacity gauge 24 comprising concentric cylinders 25, 26 connected in an A.C. bridge circuit, the signal being modified by that from a capacitor 50 totally immersed in the liquid whose capacity is made to vary with density by connecting one electrode 52 to a spring-biased float 67 so that the signal from the capacity gauge is dependent on volume and density, and therefore determines the weight of the liquid in the tank. The apparatus is powered from a transformer 12 with two secondary windings 14, 15 feeding through potentiometers 19, 38, 39. When the tank is empty, the capacity of the gauge 24 is balanced by fixed capacitor 34, and that of the compensating capacitor by fixed capacitor 56. When the tank contains liquid, the variation of capacity of gauge 24 produces an unbalance signal modified by capacitor 50 in accordance with the dielectric constant and density of the liquid, which is fed via amplifier 32 to a motor 62 to rebalance the bridge and drive an indicator 66. To counteract the inertia effect of the movable electrode 52 when the apparatus is mounted on a moving vehicle, it is also connected to a spring-loaded weight 73.
Patent GB-224705-A (GB)
Title: Improvements in or connected with miners' and other electric safety lamps
IPC: F21V25/04
Filed: 1923-10-29
Abstract: 224,705. Oldham & Son, Ltd., and Darby, G. H. Oct. 29, 1923. Battery lamps; cut-out arrangements. - A device for breaking the electric circuit in miners' safety lamps when the bulb is fractured comprises a contact q adapted to be held in tension against a contact k, to close the circuit, by means of a wire s embodying a spring t and a loop u by which it is engaged with the pip v of the bulb a. The bulb-holder b is mounted in an insulating block c secured beneath the cover f of the battery receptacle.
Patent GB-318640-A (GB)
Title: Stop valve for high pressures
IPC: F16K1/12
Filed: 1929-09-07
Abstract: 318,640. Ardeltwerke Ges. Sept. 8, 1928, [Convention date]. Casings; liftvalves. - A stop valve for liquids under high pressure has a lift-valve member adapted to close against the direction of flow and housed in an inner casing, so formed that cavitation can only take place within the out-flowing stream at the base of the valve chamber. The valve member a, arranged to slide in an inner casing d', is actuated by gearing g. The inner casing has an inwardly curved bottom wall e and at its lower end is flared outwardly at e<1> to reduce the cross-sectional area of flow.
Patent GB-483011-A (GB)
Title: Method of making tracing cloth for pencil drawings
IPC: D06M15/07
Filed: 1936-10-08
Abstract: Tracing-cloth for pencil drawings is made by providing tracing-cloth with a layer of a finely powdered grinding agent, such as glass or pumice.  In the example tracing-cloth is coated with a solution of cellulose nitrate in acetone containing pumice powder and precipitated chalk.  After drying, the surface is rubbed down with talcum.
Patent GB-1275870-A (GB)
Title: Improvements in and relating to coating compositions for foundry patterns and core boxes
IPC: B22C3/00
Filed: 1970-06-05
Abstract: 1275870 Rubber composition; foundry moulds SULZER BROS Ltd 5 June 1970 [6 June 1969] 27334/70 Headings C3N and C3Q A coating material for foundry patterns and core boxes consists of 10-30%, preferably 21À5%, by weight chlorinated rubber of the general formula (C 10 H 12 Cl 8 ) n  in which n is at least 1 and has a viscosity of 500-1500 centipoises at 20‹ C.; 5-15%, preferably 21À5%, by weight aluminate silicate ester of the general formula (C 2 H 5 O) 3 Si-O-Al(OC 2 H 5 ) 2  ; 0À5- 2À5%, preferably 1À5%, by weight polyester resin with a viscosity of 1000-4000 centipoises at 20‹ C. and including a catalyst therefor in an amount equal to 1-2% by weight of the polyester; 20-40% by weight inactive mineral fillers; and the remainder, preferably in an amount of 25À5% by weight, being thinners having a pH #7 and optionally a pigment. Suitable fillers are titanium dioxide in an amount 10% by weight and magnesium potassium aluminium silicate in an amount 30% by weight. Graphite has proved a suitable filler which also serves as a pigment. A suitable thinner is a mixture of xylene, toluene, ethyl acetate, amyl acetate, amyl alcohol and ethylene glycol.
Patent GB-295859-A (GB)
Title: Improvements in or relating to electric cigar lighters
IPC: F23Q7/00
Filed: 1927-10-14
Abstract: 295,859. Agatz, H. Oct. 14, 1927. Lighting pipes, cigars, and the like by electric devices.-A spirally-wound resistance wire or ribbon in a casing f is carried by a removable holder b which fits in a casing a with the wire or ribbon enclosed in a recess a<1>. The holder b is held in the casing a by a groove b<2> engaging coil springs c. The circuit is closed by pressing a blade spring e<2> into contact with a stud 11 by means of a push-button m, the current passing from a terminal g through a spring i, a contact ring k<1> and a bolt b<3> to the spring e<2> and thence through the stud l<1>, the resistance and casing f<1>, a bridge-piece k, the holder b, springs c and casing a to a terminal h.
Patent GB-692218-A (GB)
Title: Primary cells
IPC: H01M6/50
Filed: 1950-11-08
Abstract: 692,218. Batteries. LUCAS, O. D. Nov. 6, 1951 [Nov. 8, 1950], No. 27355/50. Class 53. The output of an electrolytic cell is raised by introducing hydrogen peroxide into the electrolyte. In a cell comprising rustless steel and magnesium plates, the electrolyte, magnesium chloride is pumped continuously through the cell together with a solution of hydrogen peroxide. It is found that the cell opencircuit voltage and temperature both rise. No explanation of the action is offered and it is stated that the cell output can be controlled by adjustment of the rate of feed of the hydrogen peroxide. The method may be adopted with cells using aluminium and carbon electrodes with an electrolyte of caustic soda and it has been found advantageous to add hydrochloric acid and ammonium chloride.
Patent GB-772999-A (GB)
Title: Improvements in or relating to roots-type mechanical high-vacuum pumps
IPC: F04C18/12
Filed: 1955-09-26
Abstract: 772,999. Rotary pumps. HERAEUS, GES., W. C. Sept. 26, 1955 [Sept. 24, 1954], No. 27370/55. Class 110 (2). In a vacuum pump of the Roots' blower type the rotors 3a, 3b and the stationary shafts 6a, 6b are each provided with passages as shown, whereby the air gap in the contact zone of the rotors may periodically communicate with a chamber of low pressure relative to the delivery side of the pump-such as the scoop chamber 9. Several such pressure equalizing passages may be provided for each rotor. The driving motor (not shown) for the pump may also be enclosed within the pump casing which comprises inner and outer walls 1, 2 defining a chamber 11 therebetween which communicates with the inlet side of the pump.
Patent GB-982955-A (GB)
Title: The manufacture of articles or parts by cold-working steel
IPC: C22C38/14
Filed: 1962-07-17
Abstract: A steel suitable for cold-working comprises: .C.up to 0.1% .Si.0.03-0.5% .Mn.0.2 -1.4% .P.up to 0.04% .S.up to 0.04% .one or more of. .Ti, Zr, V and Nb.total 0.05-1.5% .remainder iron, except for impurities.. Cold extrusion moulding is mentioned as a particularly useful application of the steels of the present invention.
Patent GB-361472-A (GB)
Title: Improvements in and connected with means for supporting show cards, picture frames and the like
IPC: A47G1/14
Filed: 1930-09-15
Abstract: 361,472. Struts for showcards &c. WHEELHOUSE, G: M., 10, Leopold Terrace, Chapeltown Road, and WADDINGTON, Ltd., J., Wakefield Road, both in Leeds. Sept. 15, 1930, No. 27543. [Class 52 (v).] A hinged supporting strut 2 for a showcard &c. is held in its supporting position by a hinged stay 3 the free end of which is notched to engage the edges of a slot 7 in the strut. In the supporting position the stay is a tight fit at the bottom of the slot. The strut and stay may be collapsed flat by moving the stay to the top of the slot which may be wider at the top than at the bottom.
Patent GB-845370-A (GB)
Title: Improvements in or relating to tractors
Inventor: ZISKAL JOSEPH FRANCIS
IPC: B60K17/28
Filed: 1957-09-02
Abstract: 845,370. Friction clutches; variable-speed gear. INTERNATIONAL HARVESTER CO. OF GREAT BRITAIN Ltd. April 17, 1958 [Sept. 2, 1957], No. 27544/57. Class 80 (2). [Also in Group XXXI] A selective-ratio gear-box with slidable gears has alternative high and low ranges of ratios obtained by driving a tubular lay-shaft 11, Fig. 3A, at high or low speed. Normal ratios for road work of a tractor &c. are obtained by driving the layshaft 11 through gears 8, 9 from a primary drive element 4 which is coupled to the input shaft dogs 1a by a slidable clutch 5. Gears 13, 14, 15 slidable on splines of the output shaft 12 are used to select the various ratios by engagement with gears 16, 17, 18 or reverse gear 19. Top gear is selected by sliding the gear 9 to engage dogs 12a on the shaft 12. An alternative range of low ratios is obtained by driving the lay-shaft 11 through reduction gears 6, 7, the gear 7 being selectively coupled to the shaft 11 through a dog clutch 10 arranged to engage only when the clutch 5 is disengaged. Top gear in the low range is obtained by engagement with the dogs 12a of the gear 9 which is driven from the gear 8 on the lay-shaft 11. A power take-off shaft 20 passes through the hollow shaft 11, and may be independently driven from the engine or a final-drive shaft 20A may be coupled to the output shaft 12 through gears 26, 26A and a dog clutch 28B. Friction clutches.-A pair of disc clutches 3, 30, Fig. 3B, are arranged for independently driving the main gear-box input shaft 1 and a hollow shaft 29 coupled to the power take-off shaft 20. The clutches 3, 30 are operated by a single control lever through a cross-shaft 42, bearing assembly 44 &c. and spiders 44, the arrangement being such that initial movement first disengages clutch 3 to disconnect the tractor drive while a drive to the power takeoff through the clutch 30 is maintained. Further movement disengages clutch 30 to inter. rupt the power take-off. The friction discs are normally pressed into engagement by dished spring rings 36, 40. Initial movement of the pressure plate 35 to release the clutch 3 compresses the spring 36 until adjustable stops 49 on the plate engage the pressure plate 39 to release the clutch 30 against the action of the spring 40. Specification 824,186 is referred to. Reference has been directed by the Comptroller to Specifications 726,338 and 799,012.
Patent GB-675117-A (GB)
Title: Improvements in or relating to machines for segregating statistical cards
Inventor: HOLDEN NORMAN GEOFFREY
IPC: B21J7/14
Filed: 1949-10-27
Abstract: 675,117. Statistical apparatus. POWERS-SAMAS ACCOUNTING MACHINES, Ltd. Oct. 25, 1950 [Oct. 27, 1949], No. 27623/49. Class 106 (i). In order to extend the capabilities of a record card sorting machine of the type in which two magazines are provided at opposite sides of the machine and a plurality of receivers are disposed between them, means are provided to selectively condition the machine for operation of one or both of the deflectors associated with two sets of receivers, each set of receivers being associated with a particular 281 magazine. In Fig. 1 there is shown diagrammatically a magazine 1 with which are associated receivers 3 and 4 and a magazine 2 with which are associated receivers 5 and 6. Feed rollers 7 and 8 in each case engage the cards as they are fed from the magazines and deflectors 10 and 11 operate to distribute the cards between the receivers 3, 4, and 5, 6, respectively. The cards delivered from the magazine 1 can be received in either of receivers 3 or 4 and the cards delivered from magazine 2 can be delivered into either of the receivers 5 or 6. Each deflector 10, 11 is provided with a flat upper surface 15 which allows the card to pass to the further receiver and a curved undersurface 14 which, when the deflector is raised will deflect the card into the nearer receiver in each case. Movement of the deflector 10 is controlled by rotation of the shaft 12 in a counterclockwise direction by the action of a member 17 engaging a pin 16 secured to the shaft 12. The member 17 is pivoted at 18 to the frame 19 and moves in a clockwise direction to deflect the pin 16 when a protruding portion 24 is engaged by an active pin 25. The pins 25 are mounted in discs 26, 27 mounted on a shaft 29 driven from the main shaft 9. Each pin is arranged to be settable by hand to an active or an inactive position by engaging a spring-loaded detent in one of the two annular grooves 33, 34, groove 33 corresponding to the inactive position and groove 34 the active position. A link 37 is connected as shown in Fig. 1 from one end of the member 17 to a lever 40 secured to the shaft 13 for operation of the shutter 11 simultaneously with shutter 10. If both shutters are not required to work simultaneously the operation of shutter 11 may be stopped by engaging a pin 49, Figs. 1,and 3, in a slot in the end of the link 37 preventing movement of the link, movement of the arm 17 being taken up by a lost-motion device comprising a slot 43 in which a pin 44 may move against the action of a spring 45.
Patent GB-261013-A (GB)
Title: Frequency selecting thermionic valves
IPC: H03F3/189
Filed: 1926-11-04
Abstract: 261,013. Loewe, S. Nov. 4, 1925, [Convention date]. Vacuum tubes. - A quartz crystal or other piezo-electric body is inserted into a valve so as to render it selective for definite frequencies. In one arrangement, a quartz body 3, Fig. 1, rest, on a metallic support connected to the cathode 1 and is excited by a flattened portion 5 of the grid or plate conductor. If an alternating voltage having a frequency equal to one of the natural oscillation frequencies of the quartz is applied to the cathode and grid terminals, the grid is strongly excited. Alternatively, the leading-in conductor 6 terminates in the enlargement 5, and the grid is connected by a wire to a point on the surface of the quartz. A grid condenser and grid leak may be arranged within the valve. In another arrangement, the anode loosely supports a piece of quartz, for instance by parallel rings surrounding it. At the frequency of oscillation of the quartz, piezo-electric alternating voltage is added to that of the anode. The voltage of the anode may be adjusted either so that only the positive piezo-electric voltage surges appreciably affect the anode current, or so that positive and negative half-waves are equally effective. Fig. 4 shows a multiple electrode system in one valve, the two cathodes 17. 18 being preferably in series. Coupling between the first anode 21 and the second grid 20 is effected by means of a condenser 23 and a resistance 31 inside, or a resistance or choke outside the valve. The piexo-eleetric body 25 is excited by an electrode 26 connected to the first anode 21. A leak resistance 24 is connected to the second grid.
Patent GB-622490-A (GB)
Title: Apparatus for use in instructing the principles of projection in draughtsmanship
IPC: G09B23/04
Filed: 1946-09-16
Abstract: 622,490. Apparatus for teaching drawing. BLACKBURN AIRCRAFT, Ltd., and HUSBAND, E. Sept. 16, 1946, Nos. 27722/46 and 9292/47. [Class 11] Apparatus for use in teaching projection-drawing comprises a board 1 with a number of panels 2 ... 6 hinged thereto and normally lying in its surface, the object e.g. triangle 7, being mounted above one of the panels and all the panels except the first, containing the projection of the object which would be obtained thereon when they are turned about their hinges into a vertical plane. As shown, the object 7 is removably mounted on a post above the panel 2 which contains a plan projection thereof viewed from above. The panels 3, 4 contain elevations which can be checked by turning these panels through 90 degrees and sighting through the triangle 7 on to the panels. As shown the panel 4 in its vertical position is parallel to a vertical plane containing one of the sides. A second identical triangle 10 may be mounted on the panel 4, so that when this panel is in the vertical position, the two triangles 7, 10 are parallel to one another. Thus the projection on panel 4 can be checked by viewing the triangle 10 from above. The panel 5 contains the projection on a plane perpendicular both to the plane of the triangle 10 and to one of its sides. This projection as shown is a straight line and can be checked by rotating the panel into a vertical plane. Finally, the panel 6 contains a view on a plane at right-angles to that corresponding to the panel 5 and shows the exact shape of the triangle which may be checked by either of the triangles 7, 10. For " third-angle " projection where elevations and plans are projected from the opposite sides of the object to those employed above in " first-angle " projection, the panels are transparent and hinged about the edges opposite to those shown in Fig. 1. The object can be rotated through 180 degrees to get the correct view in this kind of projection or an identical object turned through 180 degrees may be mounted underneath the board which is supported on legs for this purpose. By hingeing the panels at both edges so that either hinge may be employed, an apparatus can be used to illustrate both kinds of projection.