baber/WOPTO huggingface dataset:
Patent GB-1503480-A (GB)
Title: Nickel electrowinning process
IPC: C25C1/08
Filed: 1977-02-03
Abstract: 1503480 Electrowinning nickel INCO Ltd 3 Feb 1977 [9 Feb 1976] 04498/77 Heading C7B Ni is electrowon as a levelled S-free deposit at least 0À17 cm thick on a reusable cathode mandrel by electro-deposition at 30 to 90C, cathode current density of at least 200 A/m<SP>2</SP> for at least 40 hours, from an aqueous Cl-free electrolyte containing 40 to 130 g/l Ni as SO 4 , 0À5 to 25 g/l MgSO 4 , 75 to 150 g/l Na 2 SO 4 , 0 to 50 g/l boric acid and 30 to 80 mg/l S-free hydrophilic polymer as levelling agent, e.g. dextrin, gum arabic or watersoluble derivative of (such as Na carboxymethyl) cellulose. An anti-misting agent or wetting agent e.g. Na lauryl sulphate is also present. A sand-blasted Ti cathode, preferably bagged and masked with TiO 2  pigmented epoxy paint, a 4% Pb-Sb anode and a polyester cloth diaphragm may be used
Patent GB-720726-A (GB)
Title: Improvements in or relating to amplifiers having negative feed-back
IPC: H03K4/43
Filed: 1953-02-18
Abstract: 720,726. Valve amplifying circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 18, 1953 [Feb. 21, 1952], No. 4540/53. Class 40 (6). In a negative feed-back amplifier feeding a load 4 such as deflection coils, the impedance of which varies with temperature, a substantially temperature - independent current is obtained by deriving the feed-back voltage from a potential divider 5, 6, one resistor of which is temperature-dependent. The resistor 5 may have a positive coefficient or the resistor 6 may have a negative coefficient.
Patent GB-598104-A (GB)
Title: Improvements in compositions for the prevention and destruction of weeds
IPC: A01N39/04
Filed: 1945-04-09
Abstract: Compositions for the prevention and destruction of weeds comprise 2 : 4-dichlorophenoxyacetic acid or a lower alkyl ester, or alkali metal or ammonium salt thereof in association with a non-solvent carrier or diluent, the concentration of the acid or its stated derivative being at least 0.1 per cent by weight of the total composition.  In liquid form, the compositions comprise also wetting, dispersing or emulsifying agents such as sulphonated vegetable oils (e.g. sulphonated castor oil, corn oil, peanut oil and soya bean oil), and polyalkylene products of the formula R.O.(C2H4O)n.R1, where R is an alkyl, aryl, p  aralkyl, alkyl-aryl or acyl group of at least 10 carbon atoms, R1 is an alkyl, aryl, aralkyl, alkyl-aryl or acyl group or a hydrogen atom and n is an integer greater than 2, e.g. Tween No. 20 and "Triton N.E." (Registered Trade Mark), and in the dry form they may contain additional herbicides (e.g. sodium chlorate, ammonium sulphamate, sodium dinitro-ortho-cresylate and sodium arsenite), an inert filler such as talc or bentonite, a wetting agent in dry form such as alkanol, an acidifying agent (e.g. citric, tartaric, succinic, malic, maleic, fumaric or sulphamic acid) and a buffer salt.  In one example, the active agent is mixed with a light grade motor oil and talc and ground in a pebble-mill.  Specifications 573,929 and 574,274 are referred to.
Patent GB-875330-A (GB)
Title: Apparatus for receiving cigarettes or similar rod-like articles from the cut-off of a machine such as a continuous rod cigarette-making machine
Inventor: MOLINS DESMOND WALTER
IPC: A24C5/32
Filed: 1959-02-10
Abstract: 875,330. Delivering cigarettes and cigarette filters in orderly arrangement. MOLINS MACHINE CO. Ltd. Feb. 9, 1960 [Feb. 10, 1959], No. 4611/59. Class 130. A helically grooved wheel 3, Figs. 1 and 8, having suction ports 4 and mounted above the rod line of a continuous-rod machine downstream of the cut-off point C.O. grips and accelerates cigarettes (or filters) C<SP>1</SP> supported on a plate 2 to space them axially. As shown, the wheel 3 has a three-start helix and rotates with a peripheral speed 10% greater than the rod speed around a stationary suction chamber 33 which is slightly eccentrically mounted so as to effectively contact the wheel only at its operative portion. The wheel 3 moves cigarettes slightly aside from the rod line and delivers them to a rotary suction drum 6 alternate receiving flutes of which have dome-headed central and end stops 8, 9 and which delivers the cigarettes in two rows to a catcher band 7. A stop 25 prevents the rear end of a cigarette from moving sideways until it has cleared the succeeding cigarette. The cigarettes are braked in the drum flutes by suction, the drum 6 being formed with suction ports and with a circumferentially adjustable suction chamber similarly mounted to that of the wheel 3, and/or by brushes, spring-pressed pads or springs 35, Fig. 7, which are mounted by a clamp 36 and a rebound-restraining peg 37 on holders 21, 22 which are adjustable axially and circumferentially of the drum 6 and may be unitary with a guide 29 for the drum or separate. The suction may be stronger in the flutes having central stops than in the others, which are made slightly deeper to avoid the holder 21 and the suction ports of which are in the drum half adjacent the stops 9. In a modification the wheel 3 delivers cigarettes to a catcher band directly in one row or, if a cam-controlled brake is used to regulate the braking pressure for alternate cigarettes, two rows.
Patent GB-645760-A (GB)
Title: Improvements in or relating to galvanic primary elements
IPC: H01M4/06
Filed: 1948-02-17
Abstract: 645,760. Primary batteries. AKTIEBOLAGET KONTROLLINSTRUMENT. Feb. 17, 1948. No. 4623. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 19, 1948.] [Class 53] A dry battery comprises an iron casing 1 enclosing a finelydivided depolarizing material 2 such as an oxide of mercury, tungsten, molybdenum, or other metal in the higher part of the periodic table which may be mixed with graphite and upon which is an absorbed electrolyte 4. The negative electrode 5 consists of zinc in the form of wool, covered by a metal terminal plate 6. The case 1 is lined with insulation 3,
Patent GB-150945-A (GB)
Title: Improvements in respirators
IPC: A62B18/00
Filed: 1920-02-16
Abstract: 150,945. Rosling, C., and Davis, R. H. Feb. 16, 1920. Respirators.-Comprises a construction of respirator of the type in which separate inlet and outlet valves are fitted for the inspired and exhaled air respectively. In the present construction, the respirator comprises an inner layer a of impermeable material and an outer layer b of filtering-material. An inlet valve d is fitted in the inner layer, and an outlet valve e fitted to both layers so as to communicate directly with the atmosphere. The respirator fits over the nose and mouth in the usual manner and is secured by head straps c. In a modified construction, the respirator is extended to fit over the eyes and includes or spectacles fitted to both layers similarly to the exhalation valve. Two inlet valves, one on either side of the respirator, are used in this construction.
Patent GB-961217-A (GB)
Title: Improvements in armour
IPC: F41H5/04
Filed: 1961-02-08
Abstract: 961,217. Armour. L. H. D. M. BALLU. Feb. 8, 1961, No. 4726/61. Heading F3X. Armouring for stationary installations, vehicles, ships and the like comprises an inside light alloy armour forming the walls of the body to be protected and an outside armour of extra hard steel having a high elastic limit. In the preferred embodiment the outside armour is in the form of plates or scales and is attached to the inside armour by an elastomeric adhesive. The plates or scales may be removed by drilling through the inside armour and injecting a solvent into the adhesive under pressure.
Patent GB-397491-A (GB)
Title: Improvements relating to printing presses and particularly intaglio printing presses
IPC: B41F3/80
Filed: 1932-02-18
Abstract: 397,491. Printing -machines. HAWARD, E. W., Cambridge House, Richmond Bridge, East Twickenham, Middlesex. Feb. 18, 1932, No. 4784. [Class 100 (ii).] In a two-revolution intaglio or other printing- press the impression cylinder 1 is mounted at each end in spring-raised bearings 2 and is drawn into printing position during alternate revolutions by means of rods 4 which are connected by nuts 12, 12a to a vertically sliding yoke 11 which is normally reciprocated by means of a cam 10 on a cam shaft 9. The cam 10 acts on a roller 10a on a shaft 9a fitted with a rectangular portion engaging a rectangular cavity 9b in the yoke 11. Rough adjustment of the impression pressure is obtained by the nuts 12, 12a, and a fine adjustment by means of a wedge-shaped slide 17 operated by a traversing screw 18 with a micrometric adjust. ment 19. The impression may be thrown off by displacing the shaft 9a by means of lever and link mechanism 13, 14, 15 operated by a pedal 16, the cam 10 then becoming inoperative. The shaft 7 of the printing-cylinder 8 is mounted vertically below the impression cylinder, and a vertical shaft 22, driven by bevel gearing from a motor, drives the shafts 2, 9, 7 by means of worm gearing 23, 24. To adapt the machine for printing sheets of any desired size, cams of different sizes may be mounted on the shaft 9 externally of the machine frame so as to be readily accessible for replacement. The delivery chains are passed over sprockets 30 which are mounted in brackets 31 secured to the blocks 2 and so rise and fall with the impression cylinder, and a flexible drive is provided for the sprockets 30, or the delivery chains may be independently driven. The machine is preferably fitted with a doctor blade of the kind described in Specification 369,738, and the blade is supported by arms 25 on a shaft 26 which is reciprocated axially by an eccentric driven from the cam shaft 9.
Patent GB-951896-A (GB)
Title: Improvements in or relating to nuclear reactor plant
Inventor: COOPER ALAN ALFRED
IPC: G21C1/08
Filed: 1962-02-07
Abstract: 951,896. Nuclear reactors. SOC. ANGLOBELGE VULCAIN S. A. Jan. 29, 1963 [Feb. 7, 1962], No.4795/62. Heading G6C. A nuclear reactor plant employing a pressurised liquid coolant/moderator circulated in a closed flow circuit which makes a pass through a reactor pressure vessel, is provided with a connection communicating the highest point within the pressure vessel with a confined volume containing a constant mass of gas which acts upon the free surface of the coolant/moderator liquid within the pressure vessel, the pressure of the gas being such that at minimum temperature the circuit is maintained in a primed condition. In the arrangement shown coolant/moderator circulates through the reactor core 1 from an inlet 3 to an outlet 4 and then flows through a heat exchanger 7 and pump 6 back to the inlet. The top of the pressure vessel 2 is connected by a small bore pipe 10 to a closed pressuriser compartment 11 for helium gas. In priming the circuit coolant is pumped into the pressure vessel from tank 18 through valve 16a until it reaches the level LWL. Valves 8, 9 and 16a are then closed, the reactor core is fuelled, the control rods are connected to their drives, and the pressure vessel is resealed. Valves in pipes 15a, 15b are opened to connect the pressure vessel and heat exchanger to a vacuum pump 15 which removes air from the circuit. The pressuriser compartment and pressure vessel are filled with helium from a high pressure supply 13, and pumping of the coolant from tank 18 is continued until the pressure vessel contains sufficient coolant to fill the rest of the circuit under cold conditions. Valve 8 is then opened to allow the circuit to fill, valve 9 is opened and pump 6 started; the reactor is started, and at full operating temperature the coolant will rise to the level HWL. When the reactor is shut down the coolant level falls again but the pressure of the helium gas maintains the continuity of the coolant through the whole flow circuit and the pump 6 can be kept running to dissipate shut-down heat. The coolant may be a mixture of light and heavy water.
Patent GB-306002-A (GB)
Title: Method and means for eliminating play produced in ball bearings
IPC: B23P9/04
Filed: 1929-02-13
Abstract: 306,002. Buyst, F. Feb. 13, 1928, [Convention date]. Reworking worn articles; knurling. - A worn journal x is operated on by knurling rolls 1 to form helical ridges of such dimensions that the diameter of the journal is restored to original size. Two of the rolls are mounted on fixed axles 6 in a frame 3, the third roll being carried by a slide 8 which is adjustable by a screw 13. The screw 13 may be rotated by a pin 16 which, when not in use, is screwed into a recess at the end of the handle 18. Rolling annular bodies.-The inner surface of the race-ring may be similarly knurled by rolls 1, Fig. 5, carried in jaws 21, 22 which are radially adjustable by a screw 23 and are rotated about the ring-axis by a handle 31.
Patent GB-749148-A (GB)
Title: Improvements relating to earth boring tools and methods for driving them
IPC: E21B7/24
Filed: 1954-02-19
Abstract: 749,148. Earth-boring apparatus. CABOT, Inc., G. L. Feb. 19, 1954 [Feb. 20, 1953], No. 4875/54. Class 85 In an earth-boring tool means for providing periodic impacts to the boring element comprise an outer casing 1 to which an element 2, carrying the cutting tool, is secured by the interposition of a sleeve 3 having a high elastic modulus. Co-operating replaceable elements 5, 6 on the members 2, 1 respectively form the faces of a sleeve valve. Some cf the drilling mud passed downwardly through the drill stem 13 will go directly through the central bore to the tool, and the rest of the mud will pass through channels 11 to a space 8 between the sleeve 3 and casing 1. As the pressure in the space 8 increases the tube 3 becomes stretched and the valve faces 5, 6 separate thereby allowing mud to escape. This causes a decrease in pressure and the tube 3 returns to its former position thus closing the valve. The process is then repeated. Alternatively the drilling mud is replaced by compressed gases or air. The device is applicable to a rotary drill or an impact drill alone.
Patent GB-470172-A (GB)
Title: Improvements in multiple screwdrivers
IPC: B25G1/08
Filed: 1937-02-18
Abstract: 470,172. Handles. PICARD, P. Feb. 18, 1937, No. 4884. Convention date, Feb. 21, 1936. [Class 61 (i)] A multiple. screwdriver comprises a number of flat screwdrivers of increasing size, each recessed to receive the one of next smaller size. In the form shown in Fig. 1, comprising three blades A, B and C, the edges of the blades and recesses are curved so that the blades are slidably guided one within the other. In another construction, Fig. 8, the blades D, E, F are mounted on a pivot G and may be fitted in a flat casing K. The recesses in the blades need not be entirely open but may comprise a thin web N, Fig. 9.
Patent GB-1348472-A (GB)
Title: Tetraneopentyltitanium and use as polymerization catalyst
IPC: C07F7/28
Filed: 1972-02-02
Abstract: 1348472 Tetraneopentyl titanium HERCULES Inc 2 Feb 1972 [2 Feb 1971] 4931/72 Heading C2J [Also in Division C3] Tetraneopentyltitanium is prepared by reacting a titanium halide such as TiCl 4  with neopentyllithium in an inert hydrocarbon diluent such as pentane at a temperature, at least initially, of - 78 C. The compound is useful as an olefin polymerization catalyst.
Patent GB-712653-A (GB)
Title: Improvements in writing instruments
Inventor: TARRIS FREDERICK GEORGE
IPC: B43K24/06
Filed: 1952-02-26
Abstract: 712,653. Pens. SCROLL PENS, Ltd. Feb. 25, 1953 [Feb. 26, 1952], No. 5007/52. Class 146(3) Retractable writing unit.-A writing instrument has, in the form of Fig. 1, a tubular barrel a holding an axially slidable spring- retracted writing tip unit b which is protruded from the barrel by means comprising a helical cam formed on a sleeve e<SP>1</SP> fixed to the barrel and a push-rod member d passing through sleeve e<SP>1</SP> and having a projection d' bearing against the cam, one end of the push-rod bearing, against the end of.the writing unit and the other end d' projecting from the barrel for manual rotation. The retracting spring c bears between a shoulder a<SP>1</SP> in the barrel a and a head b<SP>2</SP> attached to the writing unit. The cap member e carrying the sleeve e<SP>1</SP> is screwed to the barrel a and provided with a clip f. By rotation of the push-rod d the projection d<SP>1</SP> is made to move over cam surface e<SP>2</SP> between retaining recesses e<SP>3</SP>, e<SP>4</SP> in which positions the writing tip is protruded and retracted respectively. In the form of Fig. 5, the cam surface i' is formed on head i of the writing tip unit h which is slidable but not rotatable in the barrel g. A manually rotatable plug k screwed in the end of the barrel has a nose k<SP>1</SP> bearing on the cam face and adapted to displace the writing tip unit to the protruded position against the action of spring j.
Patent GB-915099-A (GB)
Title: Valve assembly for a reciprocating compressor
IPC: F04B39/10
Filed: 1961-02-10
Abstract: 915,099. Reciprocating compressors. HOEBIGER VENTILWERKE A.G. Feb. 10, 1961 [Feb. 12, 1960], No. 5029/61. Class 8(1). [Also in Group XXIX]. Concentric annular inlet and outlet valves of a reciprocating compressor are contained in a two part valve body 1, 2 disposed between the cylinder 6 and cylinder head 7 and the joint surface 13 of said parts 1, 2 lies within the outer periphery 14 of the valve body. The outer edge 14 of the lower face of the upper part 1 and the lower face 15 of part 2 lie in the same plane. The body portion 1 has cooling fins 10 and cooling-water ducts 9, Fig. 3 (not shown). In a modification radially or obliquely directed fins project into the cooling water spaces of the cylinder and cylinder head.
Patent GB-563440-A (GB)
Title: Improvements in apparatus for drying, crimping or otherwise treating filamentary material
IPC: D01D10/04
Filed: 1943-03-30
Abstract: 563,440. Drying systems; drying fabrics. AMERICAN VISCOSE CORPORATION. March 30, 1943, No. 5087. Convention date, April 10, 1942. [Classes 34 (i) and 34 (ii)] [Also in Groups IX and XI] Viscose or other artificial filaments are dried by passing between adjacent courses of two endless belts, one of which is insulating, enclosed in vacuum chamber 2, under the influence of high frequency electric currents. One of the belts may consist of a metallic foil or fibre endless belt which presses against the filaments and the insulating conveyer belt 9 moving at the same speed, and may form one electrode 24. The chamber 2 drains into a condenser 36 maintained under vacuum. Both belts may be insulating and in that case a separate plate electrode is mounted above the double course of the belts to coact with electrode 25. The belts may be elastic and each succeeding pair of rollers may be driven at a speed less than that of the preceding pair whereby the material is crimped.
Patent GB-796073-A (GB)
Title: Combined vehicle buffer and coupling device
IPC: B61G3/16
Filed: 1956-02-20
Abstract: 796,073. Vehicle couplings. SOC. TECHNIQUE POUR L'lNDUSTBIE MINIERE, (SOTIM). Feb. 20, 1956 [Feb. 18, 1955], No. 5177/56. Class 103(5) A central coupling buffer comprises a buffing face 9 provided with a slot 10 having inwardly facing projections 11, 12 against which the enlarged end 14 of the bar 13 engage. The other end of the coupling bar is provided with a pair of operating handles 16, 17 which slide in slots 18, 19 having downward extensions forming an but of use position of the coupling bar.
Patent GB-173444-A (GB)
Title: Improvements relating to buckles
IPC: A44B11/24
Filed: 1921-02-15
Abstract: 173,444. Walker, Ltd., T., and Wood, H. H. Feb. 15, 1921. Buckles.-The prong bar 1, formed from a single length of wire or strip metal, is split longitudinally as shown in Fig. 5, one branch of each split portion being bent up to form prongs 2. The bent-up portions may be cranked to bring them into the same plane as the unbent portions 3.
Patent GB-557581-A (GB)
Title: Improvements in surfaces exposed to the flow of air, steam, and other gases
IPC: B64C21/10
Filed: 1942-04-20
Abstract: 557,581. Metal pipes. BULLOCK, R. N. April 20, 1942, No. 5209. Drawings to Specification. [Class 99 (ii)] [Also in Groups XXXIII, XXI and XXVI] For delaying the formation of vortices upon the inside surfaces of tubes due to the flow of air, steam or other gases therethrough, an organized series of ridges is formed across or at an angle to the flow, the ridges being of small and in some cases microscopic width (termed " minimum " ridges) and of the form of the upper chordwise profile of an aerofoil, superposed on similarly shaped but larger ridges (termed " visible ridges) which again, if the size of the surface warrants it, are superposed on still larger ridges (termed "major" ridges) of similar form covering the whole surface.
Patent GB-1487814-A (GB)
Title: Method of and apparatus for boiling cooking steaming simmering and sterilising liquid porridge-like or lumpy feeds
IPC: A23L3/18
Filed: 1975-02-07
Abstract: 1487814 Sterilization apparatus H WOLFF APPARATEBAU KG 7 Feb 1975 [7 Feb 1974] 5279/75 Heading A2D Apparatus for heat treating liquid, porridgelike or lumpy feeds comprises a cooker in the form of a cylindrical vessel having entry and exit openings for a material that is to be heat treated and with a conveying screw in its interior, said vessel having a jacket about it for passage of heating fluid, a charging hopper connected to the entry of the vessel by a horizontal feed screw the rear end of which is sealed, a vertical riser pipe connected to the exit of the vessel, and a decompression device comprising a cyclone device, connected to the upper end outlet of the riser pipe, and a surface, trickle or injection condenser connected to the axial upper end outlet of the cyclone device. An apparatus of the above type is shown in the accompanying Figure and comprises a pressure cooker I provided with a conveying screw 10. Material to be heat treated is fed to the cooker from hopper 2 via feed screw 3. Heat treated material is conveyed from the cooker via riser pipe 4 to a decompression device 5 in the form of a cyclone associated with condenser 6. Riser pipe 4 may be provided with a jacket to cool or adjust the temperature of the heated material.
Patent GB-534594-A (GB)
Title: Improvements in or relating to roll film cameras
IPC: G03B19/04
Filed: 1940-03-21
Abstract: 534,594. Roll-film cameras. KODAK, Ltd. March 21, 1940, No. 5283. Convention date, June 1, 1939. [Class 98 (i)] A movable film-guide carried by a slidably removable camera back moves to an inoperative position as the back is removed, and is automatically returned into guiding position in relation to the exposure frame by means carried by the back and engaging a part of the camera when the back is replaced. In the form shown, the camera back comprises the rear and bottom walls 6, 7 of the camera, and engages the body 2 by tongue and groove joints 5, 9 and 8, 10. The back carries a film guide formed by a pressure plate 18 carried by a spring 19 attached to the bottom wall 6 and having two arms 21 secured to the plate and further arms 22 engaging under the raised ends of a strip 24 secured to the back. The spring normally holds the plate in a retracted position, in which it does not engage the film when the back is being applied to the body, but when the back is in position a spring-pressed plunger 26 carried by it is depressed by engagement with the side wall of the groove 10 in the body and moves a wedge member 30 against an inclined tongue 31 on the spring 19, which is thereby raised and moves the pressure plate 18 into contact with the film.