baber/WOPTO huggingface dataset:
Patent GB-569231-A (GB)
Title: Improvements in x-ray diaphragms for intercepting secondary radiators
IPC: G21K1/02
Filed: 1943-11-05
Abstract: 569,231. X-ray apparatus. SCHONANDER, N. G. Nov. 5, 1943, No. 18386. [Class 98 (i)] X-ray apparatus comprises an X-ray tube, a screen for reducing secondary X-ray radiation and interposed between the object to be X-rayed and a plate or film, the screen comprising leaves of substantially X-ray impervious material standing on edge, the leaves being alternately interspaced with substantially X-ray transparent material, and means for moving the tube to vary the distance between the tubefocus and the screen, plate or film. The leaves are convergently directed towards a point located about half-way between the extreme positions of focus and the height of the leaves is lower towards the screen edges. The screen may be symmetrically located with respect to the source of X-rays, and may be symmetrical or unsymmetrical. The centre part of the screen may be plane, and the height may fall from this centre part towards the edge at one or more of the sides over a plane, concave, or convex surface. As shown, equidistant lead leaves 1 are separated by strips 2 of light metal, paper or synthetic resin, and are directed towards the average tube-focus. The leaves may be straight or may be curved and form part or parts of concentric or spirallyshaped surfaces converging towards the average focus. The tube is located at 3 and the body under examination at 6. The central part of the screen may be plane, as shown at 13, and the side portions either concave (12), plane (14) or convex (15). Two screens with straight leaves may be superimposed, the leaves of one screen being substantially at right angles to those of the other. In this case the spaces between the leaves may be greater. Two screens of truncated prismatic or conical shaped may be used, either placed base-to-base, as shown in Fig. 2, or truncated side-to-base. The leaves of one screen may be placed at an angle to those of the other so that they form a fine square, rectangular, rhombic, rhomboidal or trapezoidal mesh.
Patent GB-824926-A (GB)
Title: Improvements in or relating to variable velocity ratio and torque transmission systems
IPC: F16H37/08
Filed: 1955-06-25
Abstract: 824,926. Variable-speed gear. SHAW, T. W. Aug. 29, 1956 [June 25, 1955], No. 18417/55. Class 80 (2). A planet carrier 8 of a bevel or spur planet gear, having side wheels 2, 3 secured respectively to input and output shafts 1, 7, is driven from the input shaft 1 through a variable gear 15, 23 and two-to-one spur gear 24. The variable gear comprises an output friction wheel 23 which swings with the spur wheel 24 about the input shaft 1 to penetrate variably a spring- loaded expanding wheel 15, driven by the input shaft 1 at the same speed and in the same direction. At minimum ratio setting, one-toone, 23A, of the variable gear, the planet carrier is driven forwards at half input speed, so that the output 7 is stationary. As the ratio is increased to a maximum at 23B, the speed of the planet carrier is reduced and the output shaft 7 rotates backwards at speeds increasing towards, but not equalling, that of the input shaft 1.
Patent GB-648488-A (GB)
Title: Improvements in or relating to conveyors
IPC: B65G19/16
Filed: 1948-07-08
Abstract: 648,488. Endless scraper conveyers. REDLER CONVEYORS, Ltd. July 8, 1948, No. 18432. Convention date, July 15, 1947. [Class 78 (i)] In an en masse conveyer the casing is enlarged between the inlet and discharge openings to provide a much larger crosssectional area than that of the flights, so that a stationary layer of material is formed on the inside of the casing, while the return part of the casing or the part adjacent the inlet or both parts are of normal size, i.e. with only working clearance being allowed between casing and flights. The invention is described with reference to all the usual forms of casing. In the case of the straight horizontal type, Fig. 1, the casing is of normal size at 34, adjacent the feed hopper 16, and abruptly increases in size on all four sides beyond the inlet. Beyond the outlet 18 the endless pull member 20 passes over a sprocket 30 and into the return run 12 which is of normal size until the inlet is again reached. The two sections appear in Fig. 3. Material 42 is conveyed by the flights through a tunnel in stationary layer 40. Where a casing is to be curved upwards, as in Fig. 9, the casing is only increased in size on three sides beyond inlet position 126, so that the upper wall 132 is still closely adjacent the flights for guiding round the bend 106. Beyond the bend the size is increased on all four sides at 136. At a second bend 110 where the casing again becomes horizontal a drum 112 projects into an opening in the casing so as to seal the opening and also guide the pull member. Beyond the discharge point 114 a sprocket 128 passes the flights into a return casing 120 of normal size, through which some of the material may, however, be recirculated. With a side pull type horizontal closed circuit conveyer, Figs. 12 and 13, the flights 164 may be of the open type or plate type and the casing is enlarged beyond the inlet 144 on the sides and bottom to form a stationary layer 186 through which material 188 is conveyed, while an adjustable plate 184 trims the material so that links 166 are always above the surface. The portion of the casing beyond the outlet is again reduced to normal.
Patent GB-275779-A (GB)
Title: Improvements in or relating to filters
IPC: B01D33/00
Filed: 1926-07-23
Abstract: 275,779. Sweetland, E. J. July 23, 1926. Rotary filters.- Filter discs are carried by a rotatable horizontal shaft mounted in one part of a two part casing, means being provided for moving the parts relatively to one another axially of the shaft in order to open the casing. A shell 20 is movable to and from a fixed head 1 on wheels 40, 41 running on rails 39 with removable extensions 48. Filter elements 82 are carried on a hollow shaft 8 rotated, slowly during filtration and faster during discharge of the cake., bv change-speed gearing from an electric motor 16. A hopper 24 serves for the discharge of the cake through a valve 25 and also for the supply of material to be filtered from the pipe 51 and of wash water from the pipe 53. Excess of liquid to be filtered or of wash water can be drained away through a pipe 55. The elements may be built up of sectors each comprising a heavy wire screen 58, Fig. 6, terminating in a casting 59 and covered with metallic or textile cloth. The sectors are held in position by tie rods 61. The filtrate from each sector passes through a nipple 60 into a corresponding passage in the shaft 8. Each of the passages in the shaft is provided with its own test cock 57. The elements shown in Fig. 8 are not divided into sectors. They are assembled on the shaft with intermediate collars 70 and held in position by a nut 78 engaging a cap 77. The filtrate enters the shaft through the spaces between the collars and the shaft and through apertures 79. Modified apparatus is described in which the casing 20 is fixed, while the head 1 with shaft, elements and other associated parts can be moved away therefrom. Specification 199,752 is referred to.
Patent GB-1397868-A (GB)
Title: Photographic diffusion-transfer process
IPC: G03C8/36
Filed: 1973-04-17
Abstract: 1397868 Photographic silver-salt diffusion transfer process FUJI PHOTO FILM CO Ltd 17 April 1973 [17 April 1972] 18499/73 Heading G2C A photographic silver-salt diffusion transfer process is carried out using a light-sensitive silver halide material containing in at least one layer a compound of the formula:- where R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, and R<SP>4</SP>, are each H, halogen, alkyl, alkoxy, carboxy or sulpho or a salt thereof, e.g. resorcinol or its 4-chloro-, 4-bromo-, 4:6- dichloro-, 2:4:6-trichloro-, 4-methoxy-, 2- or 4- methyl, 4-sulpho- or 2-, 4- or 5- carboxy derivatives. Improved density and contrast and reduced fog are obtained.
Patent GB-374644-A (GB)
Title: Improvements in and relating to electrical liquid-heaters
IPC: F24H1/16
Filed: 1931-06-26
Abstract: 374,644. Heating liquids by electricity. MERMET, L., 22, Rue de Bondy, Paris. June 26, 1931, No. 18550. Convention date, June 27, 1930. [Class 39 (iii).] A liquid heater comprises a liquid circulation coil wound helically with an external, an intermediate, and an internal layer, and an electric heating resistance wound about the intermediate layer. Means are provided to control simultaneously the flow of current and of liquid. A shell 1 has a supply conduit 10 communicating with a control valve 11 provided with a rod 9 extended and slotted at 8 to engage a tenon 7 on a handle 6 above the cover 5. Liquid passes by the tube 13 around three concentric coils 15, 16, 19 and leaves by a tube 22. An insulated resistance 17 is wound on the coil 16 and is connected to terminals 23, 24 mounted on a support 25 secured beneath the cover 5. An insulating plate 26 is secured to the stem of the handle 6 and spaced from the plate 25 by a sleeve 28 which centres a movable contact 29, connected by a wire 30 to a terminal 31 and by a spring 34 to a pin 35, and whose rotation is limited by stops 32, 33. A gripping contact 36 is mounted in the path of the contact 29, and current supply wires 37, 38 are connected to the terminals 24, 31. Stops 41, 42 for the handle 6 are provided and the positions for hot and warm water, on and off are indicated. When the handle is displaced from 45 towards 43, the stop 33 operates to move the contact 29 which is pulled back by the spring 34. The cover 5 may be adjusted by means of a screw 40 engaging a slot 39, to vary the point at which the contacts 29, 36 separate and therefore the maximum temperature attainable. A fusible metal strip 47 connects terminals 23, 23a and is acted upon by a spring on the plate 25.
Patent GB-1188264-A (GB)
Title: Process for the Extrusion of Resins
Inventor: SKINNER STANLEY JOHN
IPC: B29C48/92
Filed: 1968-04-19
Abstract: 1,188,264. Controlling back-pressure in extruders. MONSANTO CHEMICALS Ltd. 25 March, 1969 [19 April, 1968], No. 18635/68. Heading B5A. [Also in Division F2] To regulate the back-pressure in a screw extruder, a valve is provided in passageway 1 between the screw and die which comprises a spindle 10 rotatable mechanically or manually via hexagonal nut 19 and having a contoured central portion 12 which offers a resistance to flow through passageway 1 which is proportional to the angle through which the spindle is turned within a predetermined angular range. As shown in Fig. 3, portion 12 is contoured to have flat faces 21, 22 and curved faces 23, 24, the curvature of which is determined approximately by consideration of flow dimensions and accurately by trial and error. Maximum resistance to flow occurs when line 13, 14 is at right angles to the direction of extrusion; anticlockwise rotation of the valve, as viewed in Fig. 3, decreases the resistance in proportion to the angle turned up to, in this instance, a rotation of 90 degrees. To substantially and quickly reduce the back-pressure, the valve may be turned clockwise 90 degrees to bring faces 21, 22 parallel to the direction of extrusion. The valve is mounted on a P.T.F.E. washer 25, Fig. 1, and retained by a plate 20 and bronze bush 26. The mechanical rotation of the valve may be by means of compressed air or an electric motor which in turn may be controlled by the back-pressure through a suitable servo-mechanism. Numerous thermoplastic synthetic resins as extrudable material are mentioned, the invention being particularly applicable to the extrusion of foamed resins. Suitable blowing agents are listed.
Patent GB-849739-A (GB)
Title: Improvements in or relating to light-sensitive diazotype materials
IPC: G03C1/61
Filed: 1957-06-13
Abstract: 849,739. Photographic diazotype materials. OZALID CO. Ltd., and FRANKE, R.'H. Sept. 15, 1958 [June 13, 1957], No. 18637/57. Class 98(2) The materials are prepared by coating a support with a composition containing a lightsensitive diazonium compound, thiourea, if desired a coupling component, and an anti-yellowing agent for the resulting prints comprising a saccharide compound in conjunction with a heavy metal salt. The compositions are fully defined in eight specific examples and all of these include coupler for ammonia development, the saccharide compounds being lactose and glucose, and the heavy metal salts the sulphates of nickel and manganese or chrome alum. Additionally the compositions of Examples I-IV contain finely divided silica and those of Examples V-VIII contain urea and aluminium sulphate. Fructose, saccharose, galactose, maltose, mannose, cellobiose and rhamnose are listed as further saccharide compounds which may be used. The prior use of sulphites or aldehydes, and of sugars and metal salts not in conjunction with each other, as anti-yellowing agents is referred to.
Patent GB-718218-A (GB)
Title: Coated textile fabrics
Inventor: HURD REGINALD
IPC: D06M13/395
Filed: 1951-08-22
Abstract: Coating compositions for high molecular weight linear polyester fabrics comprise a polyhydric alcohol-polybasic acid condensation product, an organic polyisocyanate, and a solvent. Polyisocyanates used are ethylene-, hexamethylene-, decyclohexylmethane-, m-phenylene- and toluylene 2:4 di-isocyanate, or toluene-2:4:6- or triphenyl-methane-4:41:411-triisocyanate.  Reaction products of the isocyanates with soybisulphites, or acetoacetic esters of phenylmethanes may also be used.  Solvents specified are butyl- and ethyl acetate, methyl ethyl ketone, methyl isobutyl ketone, methyl cyclohexanone to which may be added diluents, e.g. benzene. Pigments, natural or synthetic waxes, e.g. polythene, dibutyl phthalate, &c., may also be present in the composition. The condensation products may be produced from adipic, sebacic, or phthalic acid, and glycerol, ethylene glycol, sorbitol, pentacrythritol, diethylene glycol, butylene glycol, or mixtures thereof.  An ethylene glycol-glycerol-adipic acid condensation product in the molar ratio 3:1:3 is preferred, but others glycol-glycerol ratios may be used.  Examples describe the preparation of condensation products by heating (1) glycerol, ethylene glycol, adipic or sebacic acid for 1-2 hours up to 200 DEG C. with passage of carbon dioxide; after 4 1/2 -8\ba1/2 hours at 200 DEG C., the product is discharged, (2) adipic acid, 1:3-butylene glycol and trimethylolpropane at 200 DEG C. with passage of carbon dioxide.
Patent GB-1269961-A (GB)
Title: Improvements in and relating to photographic colour printing apparatus
IPC: G03B27/73
Filed: 1969-04-11
Abstract: 1,269,961. Light mixers; mirrors. AGFA-GEVAERT A.G. April 11, 1969 [April 13, 1968], No.18649/69. Headings G2A and G2J. In a photographic colour printing apparatus including a white light source 50 of high luminous intensity, e.g. a halogen lamp, there is provided behind the lamp a reflecting arrangement comprising one or more concave mirrors, three as shown, arranged to reflect light from each point of the source so as to form a different ring in the plane of acolour filter 55. The concave mirrors 51a, 51b, 51c are generated by ellipses having one focus in the light source and one in the plane of the filter 55, but not on the optical axis. Each cone of light issuing from a point in the filter plane will, after reflection by the walls of a housing 60, completely cover an opal disc 58 at the opposite end of the housing. Two other filters 54, 56 are provided. All three filters are formed in two symmetrical parts adjustable to a greater or lesser extent in the path of the illuminating beam. An auxiliary spherical mirror 52, a heat filter 53 and a diffusing disc 57 are also provided. The negative to be illuminated is shown at 59. In another embodiment, Figs.3, 4 (not shown) two concave mirrors are provided. In a third embodiment, Fig. 5 (not shown) four concave mirrors are provided, and a condenser lens is positioned between the opal disc and the negative. In all embodiments the filters do not get as hot as usual, as they are not fully inserted into the beam reflected by the concave mirrors, but because of the shape of the mirrors, light of each colour impinges on all the surface of the opal disc, and hence the light is well mixed.
Patent GB-632338-A (GB)
Title: Improvements in or relating to lehrs
IPC: C03B25/06
Filed: 1947-07-15
Abstract: 632,338. Glass-annealing levers. HARTFORD-EMPIRE CO. July 15, 1947, No. 18862. Convention date, Nov. 23, 1945. [Class 51 (ii)] [Also in Group XIII] In a muffle-heated glass-annealing leer in which products of combustion from the muffle are passed through a heat exchanger to preheat air prior to its discharge into the tunnel, the heat exchanger is located in part below and part at a side of the ware conveyer. In the leer shown, heating gases from a transverse combustion chamber 14 pass rearwardly through a chamber 19 into longitudinal heating ducts 26 of rectangular crosssection arranged at the lower corners of the tunnel beneath the conveyer band 6, these ducts being connected to left and right hand bottom heat exchange chambers 29 which in turn are connected to vertical chambers 35 in the side walls of the tunnel. The chambers are formed with staggered partitions 31 - 33 and 36, 37 respectively so that the gases are caused to follow a tortuous path and finally escape to exhaust stacks provided with draught inducers. Air from a blower 43 is supplied to a header 47 in the top of each chamber 35 which is connected by pipes 48 to a bottom header 49 connected to a second bottom header 51 from which the air is led by pipes 52 to a second top header 53. This header is connected by pipes 54 to a third bottom header 55 connected to a fourth bottom header 57 from which the air is led by horizontal pipes 58 to a rear inner header 59 in the associated chamber 29. The air then passes successively through outer and inner headers 60a, 62, 64 and 66, interconnected by horizontal pipes 60, 61, 63 and 65, and is finally admitted to longitudinal pipes 67 formed with nozzles through which downwardly-inclined jets 68 of preheated air are discharged beneath the heating ducts 26, see Fig. 3 (not shown). Air from these jets passes upwardly between the sides of the ducts and the tunnel walls so as to create a transverse circulation of the atmosphere. The pipes 67 terminate in transverse pipes 69 formed with nozzles through which forwardly-directed jets of air 71 are discharged over the top 11 of the main heating chamber. Specification 491,954 is referred to.
Patent GB-242009-A (GB)
Title: Improvements relating to water taps
IPC: E03C1/08
Filed: 1924-08-09
Abstract: 242,009. Griffiths, E. Aug. 9, 1924. Outlets; detachable spouts or nozzles. - In order to protect china, glass, &c. from breakage the spout of a water tap A, Figs. 1, 6, and 7 is fitted with a detachable nozzle or pad B, Fig. 5, of resilient material, the said nozzle having a rearward extension b<7> or b<8> serving as a locating device for the rim of a glass or other vessel. The nozzle may be detachable secured by friction on the spout, or may be moulded thereto, as shown at B<1> in Fig. 6, or secured thereon by a wire and seal E, e<1>, Fig. 7. In the latter arrangement the extension b<8> is hollowed at the upper part to receive the bulbous part of the tap casing and is provided with depending webs or fins b<10> and with a hole b<11>, or a recess, for the binding wire and seal E, e<1>. Grooves b<5> are formed in the nozzle to form vents to release air from a bottle or the like which is being filled.
Patent GB-183036-A (GB)
Title: Improvements in and relating to apparatus for controlling the relative speeds of motors or other driven devices
IPC: G01P3/08
Filed: 1921-07-13
Abstract: 183,036. Igranic Electric Co., Ltd., (Cutler-Hammer Manufacturing Co.). July 13, 1921. Variable-speed gearing comprises an epicyclic train 26 controlled by a second epicyclic train 30, the middle wheel of which receives a slow motion from a ratchet wheel 34 fitted with pawls mounted on a rod 39 reciprocating between adjustable stops 47, 48, the height of the stops determining the rate of motion of the ratchet and consequently the speed of the train 26. Alternatively, the travel of the reciprocating rod may be controlled by a pinion working between two reciprocating racks capable of being displaced in phase, or by a roller foot bearing on a movable tapering cam.
Patent GB-723219-A (GB)
Title: Improvements in or relating to apparatus for detecting bowing in rotating cylinders or rolls and for straightening rotating cylinders or rolls by controlling the bowing when detected
IPC: C03B13/16
Filed: 1952-07-22
Abstract: 723,219. Automatic control systems. PILKINGTON BROS., Ltd., DAVISON, R., and WYNNE, H. C. July 22, 1952 [Aug. 11, 1951], No. 18960/51. Class 38 (4). In a system as in Specification 723,218 in which bowing of the axis of an internally water-cooled sizing roll used in continuous plateglass production is detected by movement of a probe engaging the surface of the roll, and automatically corrected by the consequent operation of a micro-switch controlling a supply of cooling air to the convex position of the roll, movements of the probe at frequencies above and below the fre. quency of movement due to bowing are rendered ineffective to operate the micro-switch. In Fig. 2 the probe (not shown) moves a member 7, carrying a flange 12, axially against a spring 10. High-frequency movements of the probe of small substantially constant amplitude, e.g. due to roll surface roughness, are rendered ineffective by a lost-motion device 12, 19, 19, but movements at other frequencies turn a split bearing 17, 21, against friction, on a fixed shaft 18. An arm 25 of member 17 carries a screw 32, Fig. 3, which operates the microswitch 5, the loading of which is adjustable by a screw 30. To eliminate the effect of low-frequency movements of the probe, e.g. due to datum shifts, the microswitch is mounted on an arm 26 of a member 27 forming, with a member 28, a further split bearing, frictionally engaging shaft 18, which is moved when adjustable screws 34 on arms 24, 25 of member 17 engage arm 26. The two split bearings are tightened to the desired extent by screws 23 acting against springs 22.
Patent GB-1487543-A (GB)
Title: Dermatological composition
IPC: A61K36/00
Filed: 1976-05-07
Abstract: 1487543 Dermatological compositions DSO PHARMACHIM 7 May 1976 [11 May 1975] 18963/76 Heading A5B A dermatological composition comprises from 5 to 10 parts by weight of ichthyol, from 0.05 to 0.1 part by weight of dexamethasone, from 0.5 to 1 part by weight of salicylic acid, from 0.1 to 0.3 part by weight of Vit. A, palmitate and, in an amount to make the composition up to 100 parts by weight, an ointment base.
Patent GB-153378-A (GB)
Title: Improvements in and relating to electric heaters
IPC: H05B3/68
Filed: 1919-08-01
Abstract: 153,378. British Thomson - Houston Co., (General Electric Co.). Aug. 1, 1919.. Electric hot-plates.-A metal-shaped resistance is formed into an open spiral grid and mounted so as to project above a casing, so that articles to be heated may rest on the grid. In the arrangement shown, two spiral grids 17, 18 are mounted on arms 19 supported on a casing 20, which has a flat annular surface 11 and a flanged cylindrical part on which rests a plate 21 carrying the terminals. The resistance is preferably in the form of a helical wire embedded with insulating-material in a metal tube, which is then rolled or drawn, as described in Specification 144,767, [Class 37, Electricity, Measuring &c.]. A reflector 24, made in halves, and a cover 23 are provided. The grids are run at a glowing heat.