baber/WOPTO huggingface dataset:
Patent GB-723743-A (GB)
Title: Improvements in or relating to screen printing
Inventor: WHEELWRIGHT JOHN SYLVESTER
IPC: B41F15/08
Filed: 1953-08-21
Abstract: 723,743. Stencils &c. WHEELWRIGHT & CO., Ltd., J. Aug. 21, 1953 [May 21, 1952], No. 12903/52. Class 100 (2). Screen printing apparatus comprises an endless stencil screen rotating about supporting members, means for supplying a printing. medium to the interior surface of the screen at a selected position in its length, pressure-applying means located within the screen for forcing the printing medium through the screen, a support for the material to be printed, means for bring- ing the material upon the support and a part of the screen into printing relationship, and interengaging means projecting from the edges of the screen co-operating with grooves in the support for the material to be printed, whereby the screen is constrained to uniform width during the printing operation. The endless stencil screen 2, Fig. 1, is carried on rollers 3, 4, 5, the last being driven by a motor 22. The web 1 to be printed on is fed from a roll 1a, held in contact with the screen by a roller 6, and led through a drying chamber, supplied with air from a fan 34 heated by a resistance element 33, to a roll 30. The screen 2 is tensioned by a screw 16 controlling the height of the roller 3. Printing medium in a container 8 having a level indicator is supplied through a pierced delivery pipe and forced through the screen by a first squeegee, while surplus medium is removed by a second hardened squeegee, and by a doctor blade engaging the roller 5. The second squeegee is provided with rubber strips held back in tension on the screen surface to keep the printing medium within the width of the squeegees. The screen is reinforced by mount-. ing it on strips of rubberized fabric each combined with a V-belt 12 having teeth 13 cut out. The screen is held laterally taut by grooves in the roller 6 and in pulleys 14 which engage the belt 12, teeth 15 in the roller 6 engaging the teeth 13. For multi-colour printing, Fig. 3, the web is temporarily united to a waterproof rubber back cloth F passing through a cleaning bath G, and is fed over successive rollers E past a series of stencil units B, each similar to that shown in Fig. 1. Between each unit, the band is led through drying chambers B<SP>1</SP> supplied with heated air. The cloth F is combined with V-belts having inwardly projecting teeth meshing with teeth on the machine rollers, and outwardly projecting teeth engaging in slots in the side bands of the screens. In another form, Fig. 4, the web is held stationary on a table 35, and the stencil screen 40 is supported on a carriage 37 movable along the table, the screen being tensioned by a screw 47 controlling the height of the roller 39. The screen sidebelts have teeth engaging teeth on pulleys 39<SP>1</SP> and on rails 36 alongside the table 35. Ink is supplied from a container 44 by squeegees 42, 43 to the screen.
Patent GB-641091-A (GB)
Title: Improvements in and relating to methods of blackening stainless steel
IPC: C23C22/72
Filed: 1947-05-13
Abstract: A method of blackening stainless steel (defined as a low-carbon steel comprising 10-35 per cent chromium, with or without nickel and with or without additions of manganese, silicon, cobalt, copper, molybdenum, tungsten, vanadium, columbium, titanium, and the balance iron) or articles thereof, comprises immersion of the steel or article in a molten bath consisting of sodium and/or potassium dichromate, at a temperature preferably between 320 DEG C and 500 DEG C.  The articles are preferably first cleaned or pickled-a suitable pickle being an aqueous solution of 20 per cent nitric and 1 per cent hydrofluoric-acid-and may be polished either mechanically or electrolytically to obtain a lustrous black finish.  The black coating produced is said to be rich in oxides of iron and chromium. In specific examples, molten sodium dichromate alone is used at between 320 DEG C and 400 DEG C for treating 18-8 stainless steel; a mixture of 80 parts by weight of sodium dichromate and 20 parts potassium bichromate is used at 430 DEG -500 DEG C for any stainless steel.
Patent GB-499097-A (GB)
Title: Improved method of making articles of hard metal alloys
IPC: C22C1/05
Filed: 1938-05-02
Abstract: Hard metal alloy articles are made by pressing a mixture of tungsten carbide and cobalt to shape and sintering in carbon-containing surroundings, the free carbon being then extracted by heating the article in a reducing and carbon-absorbing atmosphere, such as hydrogen.  In an example, 95 grams of tungsten carbide powder and 5 grams of cobalt powder are pressed and packed in sugar carbon powder, and are then sintered for an hour or an hour and a half at a temperature of 1450 DEG  C. The articles are then freed from carbon powder and heated in a hydrogen current to 1450 DEG  C., until the free carbon is removed. Specification 213,524, [Class 82 (i)], is referred to.
Patent GB-418833-A (GB)
Title: Improvements relating to ladies' corsets
IPC: A41C1/06
Filed: 1933-05-04
Abstract: 418,833. Corsets. LISI, (nÚe ADORNI BRACCESI), L. C., Badia a Settimo, Florence, Italy. May 4, 1933, No. 13074. Convention date, May 4, 1932. [Class 141.] A corset consists of a plurality of pieces a, b, c, d, of extensible material which are joined together with the directions of their respective wefts arranged at different angles so that a stretching of each zone of the corset is possible in the direction required by the movements of the wearer, and the corset is provided with non-elastic bands or ribbons h applied so as to permit the stretching required while retaining and supporting parts of the body, such as the hips and abdomen. An upper or bust supporting portion, which may be formed separately, is provided having two pairs of crossed cuts reinforced at the borders, each pair of cuts being provided with a pocket g, to receive and support the breasts. The corset is provided with detachable suspenders and shoulder straps. Specifications 383,950 and 392,129 are referred to. The Specification as open to inspection under Sect. 91 comprises also a breast supporting portion consisting of two free pockets fixed to the remainder of the garment only in the upper middle part and at one lateral part, and formed of pieces of material the respective wefts of which lie in different directions. This subject-matter does not appear in the Specification as accepted.
Patent GB-506457-A (GB)
Title: Anti-snoring device
IPC: A61F5/56
Filed: 1938-05-03
Abstract: 506,457. Snoring-preventing respiratory appliances. WAITE, D. H., WALSH, R. M., and CASEY, W. A. May 3, 1938, No. 13136. [Class 81 (ii)) A device to be worn in the mouth in front of the teeth, to prevent snoring, comprises a plate 10, of celluloid or other flexible and preferably transparent material, having rounded ends and central indentations 11, and provided with perforations 13, grouped around a central imperforate area 15, and larger perforations and slots 14 at the lower edges. The perforations 13 permit the passage only of a limited quantity of air, thus promoting nasal breathing, and the openings 14 permit passage of saliva.
Patent GB-582499-A (GB)
Title: Improvements in or relating to storage battery or like containers
IPC: H01M50/129
Filed: 1943-08-13
Abstract: 582,499. Compound sheet materials. INDIARUBBER, GUTTA PERCHA, & TELEGRAPH WORKS CO., Ltd., and HARDING, H. L. Aug. 13, 1943,.No. 13156. [Class 140] [Also in Groups XVII and XXXVI] A battery or like container has its walls formed of compound sheet material consisting of one or more layers 10 of woven asbestos fabric each of which layers is sandwiched between layers 12 of ebonite material such as the eboniteneoprene mix described in Specification 571,435, [Group V]. The fabric layers may first be coated with neoprene Rubber shock-absorbing strips 13 may be moulded on to the container. Specifications 121,589, [Class 140], 416,077 and 432,699, [Group XXXII], also are referred to.
Patent GB-131653-A (GB)
IPC: F01L7/02
Abstract: 131,653. Massey, A. N. July 10, 1918 Valves.-A rotary valve for multicylinder engines has a substantial clearance between its body and casing; it is mounted in end bearings and is packed by rings 36 and longitudinal strips 37 around and between its ports 32 which are C shape and put the cylinders into communication with admission passages 16 between each pair of cylinders and exhaust passages 21, 22, 23. The packing-rings are in pairs a, b, Fig. 3, and are L-shaped, and the inner one b is loose and slides over the other. The longitudinal strips 37, Fig. 4, are in the form of wedges c, d, j forced outwards by springs
Patent GB-253099-A (GB)
Title: Improvements in or relating to photographic printing apparatus
IPC: G03B27/20
Filed: 1926-05-25
Abstract: 253,099. Wesel Manufacturing Co., F., (Assignees of Bassist, E.). June 2, 1925, [Convention date]. Printing apparatus.-In a step-andrepeat apparatus involving accurate stepping of the negative 28, Figs. 1 and 8, along and across the sensitive surface 25, the latter is mounted on a bed plate 22 which is supported on the framework 21 and is moved up to the negative by a series of connected cams 36, worked from the handle 37. The plate 22 is prevented from lateral movement by upstanding pins 23 and holes in the plate. Contact for printing is obtained pneumatically by mounting the negative 28 on a glass plate 29 in a holder 26. fitting a rubber or like gasket 27 surrounding the negative and providing exhaust means 35. For successively positioning the negative, the holder 26 is mounted in a frame 45 which is stepped along a bridge which spans and can be stepped across the framework 21. The bridge comprises bars 44 with end blocks 51 which are movable in guideways 50 on the framework 21, and are slotted to receive spacing bars 52 which are clamped thereto. Bars of different length are provided for negatives of different sizes. Each spacing bar 52 carries a pin 62 to engage holes 63, Fig. 6, in wedge-shaped blocks 64 which slide in dove tailed ways 65, and are accurately positioned across the frame 21 by a scale 67 and clamped by screws 66. The negative frame 45 is similarly positioned along the bridge by spaced blocks 76 along one of the bars 44. To facilitate dismounting the frame 45 and negative holder 26, the frame 45 has a detachable handle 80, for manipulation, which is engaged with the frame by a bayonet attachment 82. The handle has an arm 79 fitted with dowel pins 86 engaging holes in the frame 45, and with a spring pin 81 for engaging the holes in the blocks 76. The pin 81 can be retracted and held in inoperative position. To further secure the frame 45 in any registered position on the bar 44, it may be provided with an inset cam 90, Fig. 10, rotatable by a pin spanner and holes 91 to engage a groove 92 in the bar 44. To shield the sensitive surface outside the negative area, one set of spring curtains 42 is mounted at the ends of the bridge and fastened to the frame 45, and a second set of curtains 40 is mounted at the ends of the framework 21 and connected to the bridge bars 44.
Patent GB-922293-A (GB)
Title: Apparatus for assisting the growth of young plants
IPC: A01G9/14
Filed: 1960-04-13
Abstract: 922,293. Apparatus for growing plants. S. T. PURKISS. April 11, 1961 [April 13, 1960], No. 13201/60. Class 6(2). In apparatus for assisting the growth of young plants or for seed germination, containers C are fed into a tower structure by an elevator 23 and run under gravity along a spiral track 20, 20a to an outlet 22 from which the containers are removed by an endless track 25, a further container entering the apparatus at 21 as a container is removed at the outlet 22. Air is fed from a heater and fan unit 16a to a central pillar 11 provided with outlet apertures 15 and charged with water vapour by feeding water through a pipe 18 and heater 19 into the pillar. The roof 13 of the tower is raised or lowered by means of an electrically operated jack 14 for ventilation purposes. A fertiliser tank 27 and water tank 28 are housed at the top of the tower and connect with a spray pipe 29 which follows the path of the containers. Before being placed in the containers, seeds may be sprinkled on to sheets of paper to which an adhesive has been applied.
Patent GB-401009-A (GB)
Title: Improvements in and relating to the windings of dynamo electric machines
IPC: H02K3/51
Filed: 1932-05-09
Abstract: 401,009. Securing coils for dynamoelectric machines. INTERNATIONAL GENERAL ELECTRIC CO., INc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Electricitats-Ges. ; 2, Friedrich Karl- Ufer, Berlin.) May 9, 1932, No. 13354. Convention date, May 9, 1931. [Class 35.] In a dynamoelectric machine, groups of serially arranged balls or other rolling bodies are interposed between parts of the windings and their supports. As shown in Fig. 2, rollers m in holders p secured to teeth k formed at the end of a rotor, carry the steel lined bars l on which lie the end windings c. Rows of steel balls may be used instead of rollers. In the form shown in Fig. 4, in addition to the rollers m arranged on the inner side of the conductors as described above, rollers t distributed over the periphery of a ring s are interposed between the end windings and their retaining cap q. The conductors within the slots may be similarly mounted by rollers at the top and/or bottom of the slots, and the stator end windings also may be similarly mounted. The rollers m and their guides may be omitted in the arrangement described with reference to Fig. 4. The Specification as open to inspection under Sect. 91 comprises also an arrangement wherein the rolling bodies are not serially arranged, this construction being similar to one described in Specification 383,339. This subject-matter does not appear in the Specification as accepted.
Patent GB-167840-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H9/06
Filed: 1920-05-15
Abstract: 167,840. British Thomson - - Houston Co., Ltd. (General Electric Co.). May 15, 1920. Switches, quick-action; retractive switches; handles.-Switches having a snap action member, the spring of which acts in conjunction with the retracting spring of an operating-lever in one position and in opposition thereto in the other position of the switch, are mounted within the hollow tubular handles of vacuum cleaners &c., the switch-operating lever being pivoted in the tube and adapted to be flush with its surface when the handle is gripped. Within the end 8 of the tubular handle is mounted an insulating- base 10 carrying fixed switch contacts 16, 17 secured to terminals 14, 15. The U-shaped movable contact-member 24 is pivoted at 25 to side plates 23 of a metal frame 22 mounted on the insulating base 10. The switch-operating lever 34 is pivoted at 36 within the tube 8 and carries an insulating pin 33 which abuts against the tail portion 27 of an intermediate member, the latter being pivoted at 28 to the frame 22. A quickaction spring mechanism is interposed between a transverse plate 26 of the contact member 24, and the shaped end of the pivoted member 27, this mechanism comprising a spring-pressed pin 30 working in a hole in the plate 26. One end of the pin 30 has a bifurcated end 29, its other end bearing an enlarged head 31, which acts as a stop to limit the motion caused by the spring 32. The retractive spring 38 encircles a curved pin 39 secured to the member 27, this spring acting between the member 27 and an apertured lug 40 of the frame 32. As the handle is gripped, the lever 34 is forced inwards until it lies flush with the surface of the tube, thereby causing the operation of the switch mechanism; outward motion of this lever on release is limited by the bent-over tip 37 of the end flange 35a. A sliding catch 45 may be provided to lock the switch in the closed position.
Patent GB-134578-A (GB)
IPC: F21L23/00
Abstract: 134,578. Gough, R. Sept. 19, 1918. Reflectors; reflector-holders. - A reflector for miners' safety, cycle, motor, and other lamps is made in the form of a number of integral, radial, inclined panels g, the length and inclination of which gradually increases from the front to the back. The reflector, which may be of glass, metal, earthenware, &c., is secured in a holder b, which similarly increases in height from the front to the back. The holder is formed with a flange c, on which the ordinary glass d, Fig. 4, is adapted to bear. An asbestos washer may be interposed between the glass and the flange.
Patent GB-742815-A (GB)
Title: Means for supplying liquid fuel to the combustion chamber of a gas turbine
Inventor: WARNE EUGENE HAROLD
IPC: F02C9/16
Filed: 1953-05-14
Abstract: 742,815. Supplying fuel to burners. LUCAS (INDUSTRIES), Ltd., J., and ROVER CO., Ltd. May 12, 1954 [May 14, 1953], No. 13490/53. Class 75(1). [Also in Group XXVI] A gas turbine fuel system has a feed pump, of sufficient capacity to meet the normal requirements of the turbine, feeding a swirl type burner nozzle having a spill passage connected to the outlet of the pump, a circulating pump of larger capacity than the feed pump situated between the feed pump and the burner nozzle and a valve adapted to isolate the spill passage and to connect the circulating pump to the inlet side of the feed pump. In the arrangement shown under normal working conditions, fuel is supplied by the feed pump a through the circulating pump f to the burner nozzle d. The nozzle d is of the swirl type and has connected to it a spill pipe e which returns fuel from the nozzle d to a point in the feed pipe c at the outlet of the feed pump. At the junction of the spill and feed pipes a manually operable valve i is provided to isolate the pipe e and at the same time connecting the circulating pump f to the tank b. This valve may also at the same time isolate the feed pump a. Preferably the valve i is loaded so that it is automatically returned to the position shown. If a fuel supply in excess of the normal is required, the valve i is moved to the position in which it isolates the pipe e and connects the circulating pump f to the tank b. The circulating pump then temporarily serves as the feed pump. A bypass k controlled by a valve m controlled by a, speed governor n or by a valve o controlled by means p responsive to the temperature in the combustion chamber or both may be provided to by-pass fuel back to the tank b. The by-pass k may be arranged at the discharge of the feed pump a as indicated by dotted lines. A pressure relief valve h and by-pass g may be provided around the circulating pump f. Isolating valves may be provided in the supply and spill lines to the nozzle.
Patent GB-560187-A (GB)
Title: Means for retaining sheets upon drawing boards
IPC: B43L5/02
Filed: 1942-09-25
Abstract: 560,187. Drawing-boards. WILSON, W. B. Sept. 25, 1942, No. 13517. [Class 11] Paper is retained on a drawing-board by flexible bands 7 of metal &c., which pass over the paper and lie in grooves in the face of the board, the bands being tightened by clamping- devices. One end of each band is bent into the form of a clip 8, which hooks over one edge of the board, and the other end is gripped by an L-shaped clamp 11, which slides on the band, and after being moved up to the edge of the board, is tightened by an eccentric gripper 12 operated by a lever 13. Spring- members 3, fixed to the edges of the board, afford a resilient gripping-surface for the clips 8 and the clamps 11. The bands may be bent, as shown in Fig. 2, so that the clamps lie wholly below the surface of the board.
Patent GB-495411-A (GB)
Title: Improvements in the preparation of basic lead salts of trinitro-?-cresol
IPC: C07F7/00
Filed: 1937-05-13
Abstract: Basic lead salts of trinitro-m-cresol suitable for use in fuzehead beads in blasting detonators are produced by reaction between a normal salt of the trinitro-m-cresol, a soluble lead salt and a free base, the soluble lead salt and the free base being added to the reaction zone progressively and at substantially the same aliquot rates.  The solutions of lead salt and of free base may be run simultaneously into the solution of the normal trinitro-m-cresol salt or all three solutions may run simultaneously with agitation into a precipitating bath. Precipitation is preferably effected at a slightly raised temperature, e.g. 45 DEG  C.  The solutions should be dilute. Suitable bases are sodium or potassium hydroxide, ammonia, baryta or lime.  The lead salt may be purified by washing successively with hot water, acetone and amyl acetate.  Examples describe the preparation of: (1) and (2) the tribasic lead trinitro-m-cresylate, and (3), (4) the dibasic lead trinitro-m-cresylate.  To make high tension fuzeheads for electric blasting detonators, blanks are dipped in a suspension of 73 per cent basic lead trinitro-m-cresylate and 27 per cent graphite in a 2 1/2 per cent solution of nitrocellulose, dried, dipped in a suspension of basic lead trinitro-m-cresylate alone in nitrocellulose solution and again dried.  Customary dips into charcoal/potassium chlorate and collodion follow.
Patent GB-560207-A (GB)
Title: Improvements in control arrangements for variable pitch airscrews
IPC: B64C11/38
Filed: 1942-09-29
Abstract: 560,207. Fluid pressure servomotor control systems. DE HAVILLAND AIRCRAFT CO., Ltd., MOULT, E. S., GILLMORE, K. B., WARDE, R. H., and DOVE, E. B. Sept. 29, 1942, No. 13684. [Class 135] Means for controlling the pitch of an airscrew comprises a jack 13, Fig. 1, operated for the normal range of control from a pump 10 and governor-controlled unit 11, and operated outside the normal range from a variabledelivery pump 23 of the kind which maintains a predetermined output pressure, a valve 22 being provided which is operable to connect the pump 23 to the jack whilst connecting the flow from the pump 10 to exhaust. The inlet to the pump 23 may be boosted by a supplementary pump, or a pressure accumulator may be incorporated in the outlet therefrom. The valve 22 is manually operated mechanically or electrically through push-button control, and may be slidable as shown in Fig. 3 or constituted by a plurality of poppet or flap valves. Specifications 509,298, 509,299, 509,300 and 544,339, [all in Group XXXIII], are referred to.
Patent GB-714592-A (GB)
Title: Improvements relating to variable speed gears
IPC: F16H1/32
Filed: 1951-06-08
Abstract: 714,592. Variable-speed gearing. PAGE, M. W. FLOOD-, and MELDRUM, FLOOD-PAGE, Ltd. May 30, 1952 [June 8, 1951], No. 13710/51. Class 80 (2) Gearing variable continuously from forward to reverse comprises a planet gear 2 mounted on an eccentric 3 connected to a driving pulley 13 and meshing with a stationary annulus 15 and with an annulus 16, and a planet gear 6 mounted on an eccentric 7 and meshing with the annulus 16 and with an annulus 17 connected to a driven shaft 18, the number of teeth on the annulus 16 being slightly different (for example, one less than) the number on the annuli 15, 17 and the eccentric 7 being connected to a pulley 14 the speed and direction of movement of which is variable by an auxiliary variable-speed gear. Alternatively, however, any one of the four elements 3, 7, 15, 17 may be the driving member, another the driven member, another the stationary member and the remaining one the control member. Either the annuli 15, 16 or 16, 17, or, as shown, all three annuli, are of the same diameter. The annulus 15 is held stationary by a spring- loaded abutment 22 which yields in the event of overload and which may actuate an alarm or stop the prime mover.