baber/WOPTO huggingface dataset:
Patent GB-902000-A (GB)
Title: Improvements in recording devices
Inventor: SMALE ALAN JOHN
IPC: G01D15/16
Filed: 1959-10-29
Abstract: 902,000. Pens for recording-apparatus. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 28, 1960 [Oct. 29, 1959], No. 36771/59. Class 146 (3). [Also in Group XIX] A marking - element, carried by a pivoted arm sweeping transversely over a travelling record-sheet in recording - apparatus (see Group XIX), comprises a hollow cylinder 7 for example of metal, enclosing and supporting a strip or wedge 8 of porous material capable of absorbing marking liquid for example an aniline dye. The porous strip 8 may present a knife edge 9 along a generatrix of the cylinder. The remaining space may be filled with ink or with absorbent material saturated with ink and is sealed at the end 10 with a removable cover. The marking device of Fig. 4 (not shown) comprises a solid cylinder of porous material such as alumina or chalk with a strip or knife edge of metal, for example, stainless steel, inserted in a slot and the whole may be enclosed in a metal jacket. The element may have a slight taper. The effective line of contact along a generatrix may comprise a line of micro holes drilled through the wall of the element. The element may make rolling contact with the strip. Sintered materials may be used as the porous material.
Patent GB-1115289-A (GB)
Title: New terpolymer epoxide resins
IPC: C08G59/24
Filed: 1966-08-17
Abstract: Curable epoxy resins are produced by reacting a ,a 1,a 11 - tris - (hydroxyphenyl) - 1,3,5-tri-isopropylbenzene, 1,4 - bis - (p - hydroxycumyl) - benzene and epichlorohydrin in the presence of an alkali. Preferably the reaction is performed in the presence of water and using an excess of epichlorohydrin as solvent. The epoxy resin is then recovered by filtering the reaction mixture, distilling off the excess epichlorohydrin, dissolving the resin in acetone, filtering and removing the acetone.  The resins may be cured by means of the conventional curing agents for epoxy resins and modified by reaction with urea-, melamine- or phenolformaldehyde resins.
Patent GB-636471-A (GB)
Title: Improvements relating to apparatus for sterilizing by heating and subsequent coolingof food in closed receptacles
IPC: A23L3/10
Filed: 1946-12-13
Abstract: 636,471. Sterilizing apparatus. OMSTED, K. Dec. 13, 1946, No. 36898. Convention date, Jan. 9, 1942. [Class 49] In an apparatus for the sterilizing by heating and subsequent cooling of food in closed receptacles, comprising a retort in which the receptacles are placed in liquid under pressure and a container in communication with the retort, the container communicates by a pipe with a source of steam under pressure which is constant and which corresponds to the steam pressure desired in the retort. With the apparatus of the figure, a retort 1 containing the food receptacles immersed in a liquid communicates by a pipe 3, in which is a stop valve 4, with a container 2, and steam under pressure from a pipe 7 is led through pipes 10 and 12 to heat the liquid in the retort and also through a pipe 9 to the container 2, the pressure in the container being maintained at the desired degree by adjustment of a reducing valve 8. On completion of the heating, cooling water is conveyed under pressure through a pipe 13 into the bottom of the retort and the hot liquid is thereupon forced through the pipe 3 into the container 2. On completion of the cooling a valve 15 in a pipe 14 from the top of the retort is opened and the cooling water expelled through the pipe 14 to a drain pipe 17; the hot liquid is led back from the container by way of a pipe 5 to the retort on opening a stop valve 6 in the pipe 5.
Patent GB-619600-A (GB)
Title: Improvements in bundling presses
IPC: B65B27/12
Filed: 1946-12-16
Abstract: 619,600. Baling-machines. ABELE, W. Dec. 16, 1946, No. 36964. Convention date, Dec. 14, 1945. [Class 94 (i)] [Also in Group XXXVII] The press-operating electric motor of a baling- machine is stopped by the circuit being broken when a mechanically operated switch opens as the pressure on the bale reaches a predetermined value. The press plates 4 are secured on rods 3 each of which slides in a frame and is secured to a common plate 5. A chain 10 running over sprockets 8, 9 is driven by a reversible electric motor 6 through the sprocket 8 and causes movement of the plate 5 as it is connected to the chain through a gripping device 12 housed in a casing 13, which is held against downward movement within a casing 15 secured to the plate 5 by a spring 14. When the plates 4 are in contact with the .bale, continued running of the motor causes the downward pressure exerted by the chain 10 to overcome the upward pressure of the spring 14 so that the casing 13 moves downwards within the casing 15 and a lug 30 on the casing 13 opens a snap action switch 24, 24<1> and stops the motor. The press plates are raised clear of the bundle by operating a switch 32 which reverses the rotation of the motor 6 until a snap action switch 25, 251 is opened by a stop 31. The switches, normally closed by springs 28, 29, are mounted in an insulated container 16, adjustably secured to the casing 15 so that by altering its position on this casing the final pressure on the bale can be varied.
Patent GB-1508537-A (GB)
Title: Thread feeder
IPC: B65H51/22
Filed: 1976-09-07
Abstract: 1508537 Thread storage feeder IRO AB 7 Sept 1976 [12 Sept 1975] 37021/76 Headings D1F and D1J A thread storage feeder comprises an intermittent thread feed unit (I) coupled to a positive thread feed unit (P3 by a hollow axle, the unit (I) comprising a stationary storage member fixed to the axle, a winding element rotatable about the axle, and a thread displacement member, and the unit (P) comprising a feed member rotatable about the axle and a stationary guide means, a thread being wound on the storage member by the winding element and displaced along the storage member by the displacement member to form a thread reservoir from which thread is led over the top of the storage member, through the axle, and onto the rotating feed member from which it is fed via the guide means. Thread winder 5, 7, 8 is rotated by belt 21 on stationary axle 3 to wind thread F onto stationary drum 4. The thread is advanced by finger. 13 rotating with the winder and reciprocated by eccentric 14. The thread is withdrawn from the drum windings through axle 3 and over wheel 17 to be wound on drum 15 also rotated by belt 21. Thread is withdrawn via eye 20. As the windings on drum 4 accumulate, feeler 9 actuates switch 10 to cause electromagnet 12 to move roller 23 so that belt 21 drives only drum 15 via groove 22. When the windings on drum 4 have diminished, the belt is moved to again drive drum 4. Reciprocating finger 18 advances the windings. Thread may be fed directly from axle 3 or fed directly through axle 3 to positive feed unit 2 for use of the feeder in the intermittent or positive feed modes. Thread may be removed from the lower edge of drum 15 on a downward direction where the drum is provided with an element to prevent the thread from rotating about the removal edge. Units 1, 2 may be separately driven. Two or more oscillating fingers can be used, or a swash plate or conical connecting piece. Unit 2 may be replaced by a drum against whose periphery the yarn is held by a tape which may be driven.
Patent GB-945928-A (GB)
Title: Rotor head for rotary wing aircraft
IPC: B64C27/35
Filed: 1962-10-02
Abstract: 945,928. Rotary wing aircraft. LORD MANUFACTURING CO. Oct. 2, 1962 [Oct. 2, 1961; June 21, 1962], No. 37275/62. Heading B7W. A rotor blade mounting for a rotary wing aircraft comprises a first member 28 attached to the blade (mounted in fork 25) having a surface 30 transverse to the longitudinal blade axis and presented towards the blade and away from a blade mounting arm 22 on the hub, a second member 29 fixed to the arm and having a surface 31 transverse to the longitudinal blade axis and spaced outward of and presented towards the first surface 30, layers of an elastomer 35 between the surface and separated by plates 36 of non-extensible material, such as metal or glass fibre, the layers being bonded to the plates and surfaces, and pitch control means connected to the first member for twisting it relative to the second. Fig. 5 is a part section through the drag axis, and Fig. 8 a section through the flapping axis, the two axes meeting at 32, which is also the centre of curvature of surfaces 30, 31. The elastomer permits dragging and flapping movements, with damping which increases with the amplitude of the movements, and also accommodates pitch change movements. Plates 35 do not affect these functions, but do increase the resistance of the elastomer to the centrifugal force between surfaces 30, 31. The first and second members may have resilient stops to limit flapping and dragging. To assist in resisting movements of the blade transverse to its length, the member 28 on the blade has a stem 42, and further elastomer 38 is bonded between an enlargement 37 on the stem and a surface 40 on the blade arm member 22.
Patent GB-1202054-A (GB)
Title: Water-vapour permeable microporous materials and their production
IPC: D06N3/14
Filed: 1967-08-14
Abstract: 1,202,054. Polyurethane laminates. MINNESOTA MINING & MFG. CO. 14 Aug., 1967 [15 Aug., 1966; 28 June, 19671, No. 37311/67. Heading B5N. [Also in Divisions B2 and C3] A laminate comprises a porous substrate bonded to a layer of a microporous material, comprising a matrix of cross-linked, chain extended polyurethane particles chemically bonded together at cross-linkable and chain-extendable sites therein, the major amount of cross-links being urethane and/or urea linkages, and the average M.W. between the urethane and/or urea cross-links being 1000 to 50,000, the material being substantially insoluble in dimethylformamide-tetrahydrofuran mixtures and may be prepared by effecting an NCO-amine reaction in a polyurethane forming reaction mixture comprising a liquid organic vehicle in which the reactants either dissolve or form a highly solvated dispersion and in which the reaction product is insoluble, a polyisocyanate, an organic polyamine and a cross-linking component having at least three reactive groups per molecule, agitating the reaction mixture until a dispersion of insoluble gel-like polyurethane particles having chain-extendable sites therein has been produced, casting this dispersion on to a substrate prior to completion of the NCO-amine reaction to form a matrix of the particles, and substantially preventing evaporation of the liquid organic vehicle until the reaction is completed and the matrix has formed a self-supporting structure containing inter-particulate bonding. The polyurethane is suitably prepared by reacting an organic polyisocyanate, a polyalkylene ether glycol, an organic polyamine and a cross-linking component which is suitably a polyalkylene ether polyol having at least three hydroxyl groups. Evaporation of the liquid organic vehicle may be prevented by immersing the cast dispersion in a mineral spirits bath until a self-supporting structure is formed. The microporous material may then be stripped from the substrate and then adhesively bonded to suitable backings, e.g. a porous latex impregnated non-woven fibrous material (see. Example II). In Example II, the dispersion was knife coated on to a carrier film of polyethylene terephthalate and a polyester-cotton cloth was applied over the wet coating.
Patent GB-1400956-A (GB)
Title: Panhead drag mechanism
IPC: F16D63/00
Filed: 1973-08-07
Abstract: 1400956 Camera tilt and pan heads C O'CONNOR 7 Aug 1973 [27 Sept 1972] 37400/73 Heading A4H A camera tilt and panhead 10 comprises a housing 16 receiving a fixed shaft 17 about which it can rotate and a rotatable shaft 15 carrying a camera support 13, 14, each shaft 15, 17 having fixed normally thereabout a plurality of spaced discs 30, and the housing 16 also mounting for each shaft 15, 17 a respective plurality of spaced plates 31 that can be moved towards and away from the shaft so as to be interleaved between the discs without contact, the overlap between the plates and discs being controlled by manually operated gearing (36), 35, 37, and a viscous fluid in said housing surrounding said overlapping discs and plates so that a substantially constant force against relative rotation between said housing and each respective shaft is established, which force varies with the amount of disc-plate overlapping. The plates 31 are adjusted to be parallel to the discs 30 by set screws 32. To lock the camera support, 13, 14 in adjusted positions, a pan brake knob and screw (45), Fig.4 (not shown), on housing 16 urges a brake plug (47) into frictional engagement with a cylindrical surface (48) on the base 18 on which shaft 17 is fixed; and a tilt brake knob (53), Fig.3 (not shown), on housing 16 clamps an arcuate plate (54) on support 14 between a sleeve (51) and bolt (52) on housing 16.
Patent GB-964089-A (GB)
Title: Photographic camera having exchangeable objectives
IPC: G03B7/20
Filed: 1960-10-31
Abstract: 964,089. Cameras with exchangeable objectives. VOIGTLANDER A.G. Oct. 31, 1960 [Oct. 30, 1959], No. 37407/60. Heading G2A. A photographic camera has exchangeable objectives of different greatest relative apertures and built-in diaphragm in which each diaphragm adjusting member has the same position on the camera at maximum aperture and is moved from this value to a position controlled by scanning means for a built-in exposure meter pointer, the distance the scanning means has to move for any particular reading of the pointer being adjustable to allow for the maximum aperture of the lens being used. The camera shown in Fig. 4 comprises a lens mount 200 with a diaphragm adjusting ring 18 which is coupled through rods 26, 29 to a toothed ring 30 and is urged by spring 22 into its closed blade position. Ring 30 is connected through a gear and lever system 31-36 with the means for winding on the film so that when the film is wound on, the diaphragm ring is rotated until the blades are fully opened. Simultaneously a scanning lever 70 is moved through gears 52-55 and shaft 74 to a predetermined starting position. A projection on a lever 51 which engages a notch in disc 53 locks the diaphragm ring in the open position. The exposure meter comprises housing 10, a moving coil and two pointers 63 and 5 which move between a fixed clamping bar 64 and a movable bar 65, and over a scale 108 indicating diaphragm apertures. The amount of light falling on the meter is varied by the rotation of an exposure time setting ring which moves a screen over the light entry window, and the meter together with its pointers and scale 108 may be rotated to adjust it for the various objectives, either manually, or as shown by a rod 86 being depressed by a recess 87 in the objective housing 200 which results in a system of levers 81-84 rotating the meter &c. When the rod 60 is depressed to release the shutter, lever 36 is rotated about its pivot 57 which results in (a) a spring 69 urges bar 65 downwards to clamp the pointer 63, (b) disc 53 becoming unlatched so that the diaphragm ring 18 is moved by spring 22 to close the blades until a pin on lever 70 abuts the pointer 63 and (c) the shutter being operated. The spool driving mechanism comprises a plate 45 which is in frictional engagement with the end 46 of the film spool. The plate 45 and hence the spool is rotated, when a lever 16 is rotated in an anticlockwise direction and the film is driven by a sprocket 43 through gearing 39-41. A pawl 47 prevents the movement of lever 16 in a clockwise direction from being transmitted to the spool.
Patent GB-1508592-A (GB)
Title: Manufacture of steel alloy steels and ferrous alloys
IPC: C21C7/068
Filed: 1975-02-18
Abstract: 1508592 Producing steels and ferrous alloys I G NIXON 18 Feb 1975 [26 Feb 1974]  37899/77 Divided out of 1508591 Heading C7D Steel, alloy steels or ferrous alloys are produced by charging steel, scrap, Fe sponge, cast iron or a mixture to a converter, e.g. an electric converter, together with a ferroalloy and a flux and refining the melt with H 2 , an inert gas, a decarburizing gas which is reducing to wustite at the refining temperature, or a mixture thereof, additions being made before and/or during refining of a least one metal oxide. The oxide is preferably of Fe, Cr, Ni, W, Mo, Ti, Nb or Cu and may be roasted ore, ore concentrate, oxidic ore, preferably added as a briquette. Sponge iron may be used, but where the oxide is an iron oxide it is added only during refining, e.g. as a continuous stream. The decarburizing gas is a mixture of CO/CO 2 /H 2 /H 2 O, and, optionally, N 2 .
Patent GB-326874-A (GB)
Title: Improvements in the manufacture and production of derivatives of anthanthrone
IPC: C09B3/66
Filed: 1928-12-22
Abstract: 326,874. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Dec. 22, 1928. Halogenatd alkyl ethers of anthanthrone are prepared by treating alkyl ethers of anthanthrone with a halogen or halogenating agent preferably in dissolving or suspending media and, if desired, in presence of catalysts. Suitable media comprise sulphuric acid, chlorsulphonic acid, nitrobenzene, trichlorbenzene and catalysts which may be employed are iodine, sulphur, metals or salts thereof, such as iron, mercury, manganese, antimony and their halides. The products may be purified by crystallization from high-boiling solvents, by oxidizing agents, or by decomposing the sulphates as described in Specification 316,149. In examples monomethoxyanthanthrone and monochlorethoxyanthanthrone are brominated and chlorinated, and monoethoxyanthanthrone is brominated; the products dye cotton red to orange shades. These alkoxyanthanthrones may be prepared according to Specification 325,797.
Patent GB-1019764-A (GB)
Title: Improvements in or relating to electric switches
Inventor: HARGREAVES BRIAN
IPC: H01R33/955
Filed: 1962-10-09
Abstract: 1,019,764. Snap-action switches; lamp holders. ASHLEY ACCESSORIES Ltd. Sept. 18, 1963 [Oct. 9, 1962], No. 38105/62. Addition to 966,900. Headings H2B and H2E. In the lampholder or like electric coupling switch of the parent Specification the two rollers between the leaf-spring 26 and the movable contact member 29 are replaced by a single roller 33 positioned in a recess, arch or housing 31 therefor in the movable contact member 29. Movement of the switch-operating member 17 is effected by a switch actuating bar 40 slidably supported in the upper part of the lampholder body moulding and having a spring-loaded plunger 41 engaging the underside of the member 17.
Patent GB-1367100-A (GB)
Title: Treatment of pigments
IPC: C09C1/36
Filed: 1972-05-21
Abstract: 1367100 Pelleting pigments BRITISH TITAN Ltd 21 May 1973 [16 Aug 1972] 38114/72 Addition to 1367098 Headings C1N and C1A A pigment is pelleted by sieving it at least twice using at least one sieve of BSS mesh number 5-44 (3À36-0À35 mm.) and then dry trundling. The pigment may be passed twice through a single sieve, or through at least two sieves of the same or different mesh number arranged vertically below one another. The bulk density of the pigment should be at least 0-34 g./ml. before sieving; if the bulk density is lower, e.g. in a pigment obtained directly from a fluid energy mill, it may be increased by storage in a bunker with a vibratory collar. The sieve(s) may be shaken mechanically and pressure may be applied during sieving. Pelleting may be effected in a cylindrical rotating drum, preferably continuously fed with pigment from a vibatory feeder. The preferred pigment is TiO2 which may be coated with hydrous oxides of Al, Ti, Ce, Zr and Si, e.g. Si + Al, before sieving, and may also be coated with triethanolamine, pentaerythritol or trimethylolpropane. Other pigments mentioned are ochre, ZnO and Al2O3.
Patent GB-1185905-A (GB)
Title: Hydraulic Motor Control Circuits
IPC: E02F9/22
Filed: 1967-08-18
Abstract: 1,185,905. Hydraulic motor control circuits. CATERPILLAR TRACTOR CO. Aug.18, 1967 [Sept.30, 1966], No.38138/67. Heading F1P. [Also in Division E1] A variable speed hydraulic motor 18 for driving the elevator of a self-loading scraper vehicle is supplied by a first pump 41 which delivers to the inlet 43 of a by-pass valve 14 which in the neutral position shown connects pump delivery to a reservoir 22, whereas the valve 14 when position S blocks said inlet 43 and allows pump pressure to drive motor 18, and the steering motor (not shown) of the vehicle is controlled by a valve 19 which is continuously connected through a line 53 with a second pump 53 and is also connected through a two-position spool valve 58 and a line 57 with a third pump 54 when said valve 58 is in the position shown; the valve 58 when its spool 62 is moved leftwards to its other position serving the divert delivery of pump 54 past a non-return valve 71, an outlet and a line 74 leading to the delivery side of pump 41 thereby allowing the speed of the motor to be increased. In a modification the motor (18, Fig. 2, not shown) may be driven at four speeds by being subjected to the delivery of pump (41<SP>1</SP>) only, pump (41<SP>1</SP>) plus a pump (84) which is connected also to by-pass valve (14<SP>1</SP>), pump (41<SP>1</SP>) plus pump (54<SP>1</SP>) when the diverter valve (58<SP>1</SP>) is in its displaced position and by pump (41<SP>1</SP>) plus (54<SP>1</SP>) plus (84). In the above embodiments the spool of the diverter valve 58 (58<SP>1</SP>) is actuated by a foot pedal 66, (66<SP>1</SP>) but in a further modification the valve spool is displaced automatically by a pilot piston (96, Fig.3, not shown) driven by pressure from pump (84<SP>11</SP>). In all three embodiments double acting bowl jacks 16 and a double acting ejector jack 17 are supplied by a pump 21 which delivers through a line 23 to two-position control valves 12, 13 as described in U.S.A. Specification 3, 258, 926.
Patent GB-1471080-A (GB)
Title: Electron beam deflecting apparatus
IPC: H01J37/147
Filed: 1974-08-31
Abstract: 1471080 Welding by fusion BRITISH AIRCRAFT CORP Ltd 18 Aug 1975 [31 Aug 1974] 38163/74 Heading B3R [Also in Divisions G3 and H1] Electron beam apparatus (e.g. welding apparatus) comprises a ferromagnetic yoke having opposed poles 7, 8 on opposite sides of the beam and a pair of deflection coils on each pole, one coil of each pair, (e.g. coils (11a), (12a), Fig. 2, not shown) being connected in a series circuit and in a sense such that the voltage induced in one pair of coils by a collapsing deflection current in the other pair assists the rising deflection current in the first pair. The apparatus ensures sufficiently quick beam switching between two weld runs 3, 4 that the two advancing weld pools are maintained, and is achieved by the Fig. 3 circuit (not shown) including square wave generator (20), "divide by two" circuit (21), and combined buffer amplifier and reference control circuit (22). Power amplifiers (25), (26) operate in the constant current mode. Programmable variable voltage circuit (27) provides for divergent or convergent welds. The yoke may be two part toroidal cores (30), (31), Fig. 4 (not shown), with bifilar coils (34), (35). In either construction the coils may be formed from a twisted pair of Litz conductors. Sensing device (10) (Fig. 5, not shown) produces a signal proportional to the beam current which via comparator circuitry may be used to correct the current (see Division G3). The device (10) comprises a thin walled tube (50), Fig. 6 (not shown) containing a resistive element (not shown) spaced by a glass spacer and connected at one end to the outer end of the tube, and at the other to the outer terminal of coaxial socket (52). Housing (55) may be formed from a solid Al block, is connected by wire (56) to socket (52) and carries PTFE bush (54). Further sensing device (60) ensures automatic focusing, the width of the pulses in each device being compared. The current control and focus control may be combined in one system, two encoded signals being transmitted in multiplex form over a single optical link. Two runs of "stitch" welds, rather than continuous weld, may be obtained by frequency reduction of generator (20).