baber/WOPTO huggingface dataset:
Patent GB-536677-A (GB)
Title: Improvements in friction-jointed structures
IPC: F16B2/00
Filed: 1940-02-24
Abstract: 536,677. Picotal joints. CORNERCROFT, Ltd., and RYCROFT. N. Feb. 24, 1940, No. 3484. [Class 65 (ii)] In a friction-jointed structure for supporting electric lamps &c. one or each of the jointed members is formed from sheet metal pressings 2, 3 secured together, one within the other, to form a rigid tubular member, Fig. 5, having integral lugs 2c, 3c for the pivotal attachment of one member to another or to a fitting or support. The joint may embody copper &c. washers 10 and spring washers 5.
Patent GB-1215574-A (GB)
Title: Deposition of metal values
Inventor: BURKIN ALFRED RICHARD
IPC: B01D11/04
Filed: 1967-01-24
Abstract: 1,215,574. Precipitating oxides from solution. A. R. BURKIN. 16 Jan., 1968 [24 Jan., 1967], No. 3565/67. Heading C1A. [Also in Division C7] A metal value is precipitated as pure metal or compound e.g. oxide, by contacting with a reducing gas, e.g. hydrogen, a liquid organic medium containing in solution a metal species in a compound of, or in a complex with, a carboxylic acid extractant. When the metal species is more electropositive than Cd, an acid acceptor should also be present. Specified metal species are the elements of Groups lB and VIII, and Cd, V, U, Mo and W. Preferred extractants are tert. carboxylic acids. The liquid medium may be excess of extractant or may be a hydrocarbon, halohydrocarbon or long-chain alcohol. Suitable acid acceptors are ammonia and organic amines. For some metals (such as Ni, Co and Fe) a seed material, e.g. metal powder, palladised C, or colloidal graphite, may be used. In .one example (5), Fe-containing organic solution is reacted in the presence of Ni powder to produce Fe 55%-Ni 45%.
Patent GB-1191614-A (GB)
Title: Method of Anchoring Artificial Seaweed Formed of Synthetic Elongated, Flexible, in Water Bouyant Elements Secured to Anchoring Bodies, to a Floor Underneath a Body of Water, and Artificial Seaweed for Use in this Method.
Inventor: EDWARDS KEITH WILLIAM
IPC: E02B3/04
Filed: 1969-01-22
Abstract: 1,191,614. Anchoring artificial sea-weed. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 22 Jan., 1969, No. 3579/69. Heading E1H. Artificial seaweed is anchored by being temporarily attached to a tube which is used to lower it to the sea-bed and which, by a flow of fluid, disturbs the bottom and allows a dish shaped anchoring member of the seaweed to bury itself in the bottom. The tube is thus removed for re-use.
Patent GB-1066092-A (GB)
Title: Method of controlling the d.c. output of rectifiers
IPC: H02M7/155
Filed: 1965-01-27
Abstract: 1,066,092. Rectifying; control of D. C. motors. FORGES ET ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE JEUMONT. Jan.27, 1965 [Jan.31, 1964], No.3692/65. Headings H2F and H2J. A controlled rectifying circuit, of the type in which the elements are either ON or OFF for the whole of their forward biased periods has the controlled rectifiers G 1 , G 2  controlled by a two state switching circuit T 1 , T 2  which compares the actual output with a reference level to determine whether or not a rectifier should be turned ON, and to avoid the effect of hysteresis in the bi-stable arrangement it is briefly driven into the ON state shortly before the beginning of each forward biased period. The rectifier may supply the excitation current to an exciter for a motor being braked rheostatically Fig.1 (not shown), and the control circuit then monitors the motor excitation current. The current J Fig.2 passes through a D.C. transformer 7 and a Voltage proportional to the current appears across a resistor 10 and is compared with a variable reference voltage V c  to give a control voltage V a  Once in each half-cycle of the excitation supply to the D.C. transformer 7 the voltage j across the resistor 10 vanishes briefly. The point in the supply waveform at which this occurs is determined by the phase-shifting arrangement 6, and is arranged to be near the end of each half-cycle. The two state switching circuit provides firing signals for the thyristors G 1 , G 2  when voltage j is too low. Therefore when voltage j vanishes the switching circuit goes to the ON state but will return to the OFF state before the end of the half-cycle if the voltage j is above the reference voltage. With the bi-phase arrangement shown, each thyristor always conducts for the last few degrees of its forward biased half-cycle (but the current passed is negligible if the phase shifter 6 is suitably adjusted) since the firing signals are applied to both. In a modification Fig.4, (not shown), a further thyristor g 1 , g 2  is connected in series with the control electrode of each main thyristor and switched on by signals from additional windings of the main transformer, so arranged that only the further thyristor associated with a forward biased main thyristor is turned on. The point in the waveform at which the voltage j vanishes and the switching circuit goes to the ON state is no longer important, and the phase shifter 6 is not required.
Patent GB-114025-A (GB)
Title: Improvements in or relating to the Treatment of Iron-sponge.
Inventor: SINDING-LARSEN ALF
IPC: C21B15/04
Filed: 1917-03-14
Abstract: 114,025. Larsen, A. Sinding-. March 14, 1917. Iron carbonyl.-During the process of transforming iron sponge into solid iron by the carbonyl treatment, the iron sponge is subjected to a rubbing or disintegrating action in a mill or other. suitable mechanical means while the sponge is acted upon by carbon monoxide, at a temperature of about 100‹ C.
Patent GB-607495-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B17/42
Filed: 1946-02-06
Abstract: 607,495. Photographic roll-film cameras. KODAK, Ltd. Feb. 6, 1946, No. 3740. Convention date, Nov. 16, 1944. [Class 98 (i)] A double exposure prevention device for a roll-film camera comprises two similar spring- connected locking members 25, 26, slidable in bearing channels 36, 37 and having at their ends lateral latching arms 27, 28, 31, 32, one of the arms of each member, i.e. 27, 28 being capable of engagement with a cam 15 secured to a shaft 13 driving a take-up spool, and the other arms of each member, i.e. 31, 32, engaging with means for releasing the shutter. The shutter releasing means consists of a rod 19 which passes through a collar 20 having a shoulder 22 which engages the wall 2 to limit the upward movement of the collar under the action of a spring 21 carried between the collar and a housing 23. Starting with the device in the position of Fig. 3, ready for exposure, the knob 17 is depressed and carries with it the collar, allowing the end of the rod to trip the shutter. As the collar passes below the level of the wall 2, one or both of the arms 31, 32 (depending on the position of the cam 15) slip into contact with the knob 17, and when the knob is allowed to rise again, at least one of the arms is carried up by the collar twisting one of the members 25, 26, since the arms 27, 28 are held stationary by the casing 5 and wall 2 while the arms 31, 32 are free to move in the extension 45-and finally slips in between it and the shoulder 18 on the rod 19 as this returns to its initial position, thus preventing a second actuation of the shutter (Fig. 2), since the trigger is prevented from being depressed sufficiently to fire the shutter. To wind on a fresh length of film the shaft 13 has always to be rotated through more than 180 degrees, and hence the cam successively engages arms 27, 28 moving them away from the rod 19 whereupon, by reason of their torsional rigidity, the latching members slip back against the wall 2. In a modification, the latching arms may be arranged to move vertically so that they stress the rods 25, 26 by flexure instead of torsion. Preferably, the latching members are formed from square wire, but round wire, flattened to form arms 31, 32, would also be suitable.
Patent GB-447788-A (GB)
Title: A new or improved roller varnishing machine
IPC: B05C1/00
Filed: 1935-02-07
Abstract: <PICT:0447788/III/1> <PICT:0447788/III/2> <PICT:0447788/III/3> A machine for varnishing rollers comprises a lathe-like device to support and rotate the roller R, and a varnish supply nozzle N and following brush y, or like spreader, on a carriage o traversed along the machine as the roller is rotated, the machine being characterized by the provision of a paddle u2, or like agitator, within the varnish mixing chamber u carrying the nozzle, rotated by the traverse of the carriage.  The varnish container u is shown carried by an arm q<1> radially adjustable on a vertically adjustable bracket q, the spindle r being rotated by a pinion engaging a rack on the machine bed, and driving the paddle through bevel gearing.  The nozzle N may house a spring-pressed piston-like valve member 2, carrying a needle point 2a, the coned end of an adjusting screw 3 engaging an inclined groove 4 therein.
Patent GB-352929-A (GB)
Title: Improvements in or relating to wave meters
IPC: H03J5/24
Filed: 1930-02-05
Abstract: 352,929. Wavemeters. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and PARKIN, T. D., The Haven, Mill Lane, Broomfield, near Chelmsford, Essex. Feb. 5, 1930, No. 3961. Drawings to Specification. [Class 37.] A multi-range wavemeter comprises two or more fixed banks of condenser vanes and corresponding movable vanes operated by a common drive, the capacity between each set of fixed and moving vanes varying proportionally and the angular movement of the rotor system being either 90 or 180‹. Multiple asymmetric plug-and-socket connections are provided between the condenser system and an inductance coil for tuning over wide wavelength ranges. Fixed condensers are provided in parallel with the variables, the capacity relationship between the fixed and variable condensers bearing a fixed ratio throughout the system.
Patent GB-585308-A (GB)
Title: Improvements in or relating to electric transformers, choke coils or the like
IPC: H01F41/00
Filed: 1945-02-19
Abstract: 585,308. Transformers and inductances. COLE, Ltd., E. K., SPENCER, R. K., ELLIS, F., and NEWBERY, C. J. W. Feb. 19, 1945, No. 4093. [Class 38 (ii)] A transformer or choke coil is mounted in a hermetically sealed casing 5 of rubber or similar material having such an internal shape that the transformer or coil is thereby held in position, an end wall with apertured bosses 6 through which pass leads 9, and a brass baseplate 7 with mounting screws 10. The transformer, comprising a core 3, windings 2 and a former 1 carrying contact tags 4, is pushed upwards into the square hole in the cylindrical rubber casing 5, the leads 9 are pulled through bosses 6, to metal tubes in which they are soldered, and the brass base 7 is sealed to the casing which is then evacuated through holes in base 7 and filled with oil. Alternatively, the oil filling may be done under heat and vacuum through a glass neck in the end of the casing and the leads may be sealed by cup-shaped clips 11 compressed on bosses 6 as shown in Fig. 4.
Patent GB-839435-A (GB)
Title: Improvements in or relating to roller hearth furnaces
IPC: C03B35/16
Filed: 1957-02-06
Abstract: 839,435. Rollers. OFU OFENBAU-UNION G.m.b.H. Feb. 6, 1957 [Feb. 8, 1956; Jan. 21, 1957], No. 4116/57. Class. 42 (2). [Also in Group XII] In a roller hearth furnace each roller is supported solely at one side of the furnace. Each roller mounting comprises a cylindrical member 15 having a flange 151 and roller cooling fan blades 152 and carrying a spindle 153 adapted for mounting in a double bearing 120, 121. The spindle has a step; member 18 and an axially, adjustable flange 154 and in assembly a spring 19 to urge the member 15 inwards, is disposed. between the bearing, 120 and the flange 154. The roller, which is hollow, of iron, and preferably cast centrifugally in an inclined mould, is welded at 114 to the member 15,the method of casting ensuring a reinforced wall 112 at, the region where maximum bending, stress occurs. Between the flange 151 and the furnace wall 10 are located co operating, annular members 16,.. 17 of amorphous carbon the contact surfaces being spheroidal to ensure gas-tightness between atmosphere andfurnaceinterior even should the roller tilt. Instead of the thickened.. wall 112 the roller may have. inserted therein an. annular reinforcing lining 20.
Patent GB-1423744-A (GB)
Title: Pigment compositions
IPC: C09C3/10
Filed: 1973-01-26
Abstract: 1423744 Pigment compositions HOECHST AG 26 Jan 1973 [29 Jan 1972] 4148/73 Heading C3P Pigment compositions suitable for colouring thermoplastics materials, particularly polyolefins, are prepared by incorporating at some stage a water-soluble alkali metal silicate and an aqueous suspension or dispersion of an ethylene polymer and drying the resulting pigment dispersion. The silicate, which may be in aqueous solution, and/or the polymer suspension or dispersion may be incorporated during chemical preparation of the pigment or during a conventional treatment thereof. The pigment dispersion is preferably coagulated, e.g. with a mineral acid and/or water-soluble salt of a polyvalent cation, before drying. The pigment may be an organic or inorganic pigment. In examples polyethylene is coloured with pigment compositions prepared from dispersions of polyethylene containing potassium laurate together with (1) azo pigment and sodium silicate solution, (2) a perylene tetracarboxylic acid pigment and potassium silicate solution, (3) Vat Orange 7 pigment and potassium silicate solution, (4 and 5) titanium dioxide pigment and sodium silicate solution and (6) chromium yellow pigment and sodium silicate solution.
Patent GB-723660-A (GB)
Title: Improvements in laundry washing and similar machines
Inventor: HOWLETT EDWARD JOHN
IPC: D06F1/08
Filed: 1952-02-16
Abstract: 723,660. Washing - machines. BRAITHWAITE & SON ENGINEERS, Ltd., I. Feb. 20, 1953 [Feb. 16, 1952; July 24, 1952], Nos. 4162/52 and 18716/52. Class 138 (2). A washing-machine comprising a rotating perforated horizontal cylinder arranged in an outer cylindrical casing P, has an external liquid circulating system including a tank H having an inlet from and outlet to the casing P and a float k<SP>1</SP> which controls a valve K in the fresh liquid supply pipe e<SP>4</SP> to the machine whereby when the liquid rises to a predetermined level in the machine and tank H the supply of fresh liquid is stopped, manually operated means (j<SP>1</SP>) being provided for preventing circulation of the liquid through the tank and machine and allowing fresh liquid to travel through the machine and then pass to waste. The circulation may be produced by a pump L or by a steam or other fluid injector. The casing P is connected by a pipe B to a scum tank G, the tanks G, H being connected through a valve J. The scum tank G is connected to a drain pipe g<SP>2</SP> through a stand pipe g<SP>1</SP> whose height is determined by the desired working level of the liquid. The pipe g<SP>2</SP> may be connected through a heat exchanger M to a drain pipe g<SP>6</SP>. Water entering the machine passes into the heat exchanger through a pipe e<SP>3</SP> and then through the pipe e<SP>4</SP> to the tank H. An additional valve g<SP>6</SP> enables sediment to be removed from the scum tank G. A filtering screen g<SP>3</SP> may be fitted in the tank G and a steam or electric heating element F in the tank H. A single tank divided by a partition may be employed instead of two separate tanks G, H. With the valve J open, water is circulated by the pump L through the machine P and tanks G, H, the valve K remaining closed due to the float k<SP>1</SP>. At the end of the washing process the valve J is closed and as the pump L continues to draw water from the tank H and deliver it to the machine the level in tank G rises until water overflows through the standpipe g<SP>1</SP> to the drain. The drop in level of liquid in tank H opens the float-controlled valve K, so that a continuous flow of water passes through the machine for rinsing purposes. In a modification, Fig. 1 (not shown), a single tank is employed, the connection to the washing-machine being provided with a steam or other fluid injection device. A manually-controlled valve closes either this connection or a drain pipe. Fresh water is supplied directly to the machine under the control of a float in a chamber connected to the tank. Specification 640,974 is referred to.
Patent GB-909143-A (GB)
Title: A rocket for distributing oil on the surface of the sea
IPC: F02B75/22
Filed: 1960-02-05
Abstract: 909,143. Rockets. MARXEN, F. Feb. 5, 1960 [Feb. 13, 1959], No. 4256/60. Classes 9 (1) and 9 (2). A rocket for spraying oil over the sea through ports 9 has fins 14 so inclined that the rocket is caused to rotate during flight. A chamber 7 within the rocket is filled with oil through an opening in the nose closed by a plug 4 and the apertures 9 are normally closed by metal foils 10. Strikers 11 aligned with the apertures are seated in branches of a tube 12, which has a stem containing black powder. The stem supports the forward end of the propellant charge 13, which extends through a spacer ring 15. Shortly before the charge 13 burns out, it ignites the black powder, the gases from which force the strikers through the foils and so release the oil. Instead of the foils 10, stoppers, which are thrown out by centrifugal force, may close the apertures 9. In Fig. 3 the apertures are closed by plates so connected to pivoted fins 14 that, as the fins move from the storage to the operative position, the plates 19 rotate and expose the apertures. In Fig. 5, the apertures 9 are closed by slides 20 connected to a bowed member 21 slidable in a slot 22. A piston stressed by a spring 23 holds the member in the closure position until thrust forward by the gases from the propellant 13. The apertures may be in the tail and closed before firing by claws attached to the barrel of a launching pistol. The launching tube itself may be used to close the apertures. Six rockets may be assembled in guide tubes 18 to form a magazine, which may be inserted in a firing stand 32, 33 provided with ignition leads 27, 28 and a sighting device 30. The stand has a counterweight 35 and a safety-belt 34.
Patent GB-596869-A (GB)
Title: Improvements in or relating to acoustical diaphragms
IPC: H04R7/10
Filed: 1945-02-20
Abstract: 596,869. Diaphragms. LAWRANCE, A. E. N. Feb. 20, 1945, No. 4276. [Class 40 (iv)] The surface of an acoustic diaphragm is loaded with a superimposed mass or masses and/or stiffened by means of corrugations, indentations or the like extending in a circumferential direction so that the loading and/or stiffening commences at or near the outer circumference of the diaphragm, extends therefrom inwardly towards the centre and increases progressively in extent from a minimum to a maximum through approximately 360 degrees with the result that the radial zones of maximum and minimum loading or stiffness are in close proximity one to the other and a central portion of the diaphragm is left unloaded or unstiffened. As shown in Fig. 1, a strip 2 with a spiral or logarithmic inner contour is attached to the diaphragm 1, the material of the superimposed layer being preferably stiffer than that of the diaphragm 1. In a modification, Fig. 4 (not shown), a number of layers with spiral contours are superimposed in spaced angular relation. In a further construction, Fig. 2, the diaphragm 1 has a series of spirally arranged bosses or bulges 3 which increase in size or depth in the outward radial direction. In a modification, Fig. 3 (not shown), the bulges are elongated and their longer axes are inclined at an angle, preferably 45 degrees, to the corresponding radius of the diaphragm passing through the centre of the bulge. The added layer or layers may be of cardboard impregnated with glue or of a plastic material attached to the diaphragm by an adhesive. According to the Provisional Specification, the variation may be according to an arithmetic or geometric progression and may be effected in successive quadrants of the surface of the diaphragm.
Patent GB-1194552-A (GB)
Title: Ventilation Systems for use in Houses for Livestock
Inventor: DAVIES JOHN THOMAS
IPC: A01K31/00
Filed: 1967-01-28
Abstract: 1,194,552. Ventilating buildings. ANVIL ENTERPRISES Ltd. 5 Jan., 1968 [28 Jan., 1967], No. 4317/67. Heading F4V. A ventilation system for a livestock house comprises a duct 6 extending the length of the house with an air inlet at each end and having side walls 7 provided with louvres to direct the air as it leaves the duct. The louvres may be fixed to direct air upwardly or may be adjustable individually or collectively. Air is extracted from the house by fans 17 through slots 15 in both sidewalls. The base of the duct 6 includes longitudinal slots to direct air downwardly into the central region of the house.
Patent GB-1102589-A (GB)
Title: Push-pull semiconductor circuit
IPC: H03K5/02
Filed: 1967-01-30
Abstract: 1,102,589. Inverting. INTERNATIONAL BUSINESS MACHINES CORPORATION. 30 Jan., 1967 [25 March, 1966], No. 4374/67. Heading H2F. [Also in Division H3] A push-pull transistor switching circuit has a feedback circuit responsive to the discharge of stored carriers in each transistor while it is being switched off to maintain the other non- conductive until conduction ceases. The circuit shown is driven by rectangular waves so that the transistors conduct alternately. Feedback through one or other of diodes 37 and 38 provides reverse bias to the non-conducting transistor and this ensures that the transistor remains non-conducting after the input wave has reversed until stored carriers in the conducting transistor have been discharged. Distortion due to simultaneous conduction of both transistors is thus avoided.
Patent GB-143322-A (GB)
Title: Improvements in and relating to the assembling of electric batteries
IPC: H01M50/176
Filed: 1919-02-21
Abstract: 143,322. London Battery Co., and Clarke, E. W. Feb. 21, 1919. Cells.-The electrode lug s is surrounded by a rubber collar r which passes hrough an opening d in the cover, the opening being of co:nsiderably larger diameter than the collar. A tight joint is made by a washer w which fits the collar r tightly and is cemented bo the battery lid or attached by a solvent. The washer w may be on the underside of the lid, and the joint may be made by flooding the lid and washer with a waxy or bituminous substance in a fluid or plastic state,
Patent GB-265778-A (GB)
Title: Improvements in and relating to duplicating with the aid of stencils
IPC: B41N1/24
Filed: 1926-02-16
Abstract: 265,778. Gestetner, D. Feb. 16, 1926. Stencils.-A subsidiary or auxiliary stencil sheet 1 combined with a porous sheet 2 acting as an ink reservoir and an ink-permeable backing sheet 3 is attached by an adhesive to a duplicating-machine stencil. The auxiliary matter may be a signature &c. required to be printed in a different colour from the main part of a letter, or it may be a variable part of a letter printed in a single colour. Specification 255,361 is referred to.