baber/WOPTO huggingface dataset:
Patent GB-832819-A (GB)
Title: Fluid pressure responsive electric switch
Inventor: SMITH DAVID WILLIAM
IPC: H01H35/26
Filed: 1957-05-06
Abstract: 832,819. Fluid actuation of switches. BRITISH OXYGEN CO. Ltd. April 30, 1958 [May 6, 1957], No. 14398/57. Class 38 (5). Fixed contacts 22 are bridged by a contact 25 carried by a bobbin 19 secured to diaphragms 16 when the pressure in inlet chamber 15 falls to a certain value. The chamber 26 is connected to chamber 15 by a metered bore in the bobbin so that normally the pressure is equal on both sides of the diaphragm assembly, the contacts being held open by a spring 28. After a pressure drop in chamber 15, the contacts remain closed until the pressure in chamber 26 drops due to leakage past the screw 27 in the bobbin, or until the restoration of normal pressure in chamber 15. The space between the diaphragms may be filled with inert gas to suppress arcing or may be connected to atmosphere.
Patent GB-701574-A (GB)
Title: Improvements in or relating to electro-plating machines
IPC: C25D7/06
Filed: 1950-06-09
Abstract: 701,574. Roller conveyers. HEATH, A. R. N. Aug. 30, 1951 [June 9, 1950], No. 14415/50. Class 78 (1) [Also in Groups XXIV and XXXVI] Apparatus for electro-plating metal sheets, of the kind in which the sheets are urged through treatment baths by pairs of rollers mounted on rollers and situated outside the baths, the sheets passing into and out of the baths through sealing lips of rubber or the like, is characterized in that the pairs of rollers carry sprocket wheels, the teeth of which lie in different planes transverse to the axis of rotation, and a duplex or triplex endless chain extends between the sprocket wheels and engages the teeth to drive the two rollers of each pair in opposite directions. The diameter of the pitch circle of each sprocket wheel may be approximately equal to the diameter of the roller of the shaft on which the wheel is mounted. In the arrangement shown in Fig. 1, metal sheets are fed from a table B by pairs of rollers through levelling apparatus B<SP>2</SP> and through sets of baths provided with entry and exit slots for the plates. The rollers are rotated by an endless chain H<SP>3</SP> driven by an electric motor H. The chain H<SP>3</SP> as shown in Fig. 3, is a triplex chain the central longitudinal part of which engages the teeth on the sprocket C of an upper roller, while the two lateral parts of the chain engage two rows of teeth on the sprocket C<SP>1</SP> of a lower roller. The bearings for the shafts of the rollers are mounted to slide freely vertically on their supports B<SP>3</SP>. Each bath is provided with rubber sealing lips J, Fig. 5, to prevent loss of liquid during passage of the sheets. The sheets are guided in the plating baths by pairs of rubber-covered rollers Q, Q<SP>2</SP> and pass between pairs of anodes P, P<SP>1</SP> which are supported at their ends on conducting strips of stepped form made of copper covered with antimonial lead. The sheets before being plated pass through anodic cleaning, hot washing, and pickling baths, and after plating pass through hot washing baths and drying apparatus. Reference has been directed by the Comptroller to Specification 445,719, [Group XXXVI].
Patent GB-144854-A (GB)
Abstract: 144,854. Terrey, E. L. Dec. 13, 1919. Drawings to Specification. Changing apparatus.-Advertisement or other signs comprise a Geissler tube or tubes partially exhausted of air and filled with carbon dioxide or other gas to which current is supplied intermittingly.
Patent GB-1422777-A (GB)
Title: Sealing of electric cells
IPC: H01M2/02
Filed: 1972-03-28
Abstract: 1422777 Jointing ALKALINE BATTERIES Ltd 26 March 1973 [28 March 1972] 14521/72 Heading B3V [Also in Divisions B5 and H1] An electric cell has a casing formed from two shallow metal tray portions 10, 20 having peripheral flanges 12, 22 with a thermoplastic coating 11, 21 on opposed faces which are secured together by a welded joint which also provides electrical resistance between the trays 10, 20. As shown, a nickel cadmium alkaline cell of circular, square or rectangular shape comprises two steel trays 10, 20 having polyvinyl chloride coatings 11, 21 and contains a separator 17 and two electrodes 14, 24 which may be of pocket type, sintered, compressed powder pellets, or pasted, or a mixture of these types. Nickel or nickel plated steel connector strips 15, 25 are spot welded to the electrodes 14, 24, respectively, and to small areas in the middle of the trays 10, 20 from which the coating has been removed. Alternatively, a blade or washer spring may be welded to each tray so as to make contact with each electrode without spot welding. The electrolyte is provided absorbed in the electrodes and separator by storage of these parts, prior to assembly, in an electrolyte. Preferably, welding of the flanges 12, 22 is effected by high frequency dielectric heating with the interposition of a steel gasket 28 having polyvinyl chloride coatings 29, 30 on both faces. The gasket 28 is connected to one terminal 32 of a high frequency supply 34 and outer electrodes are formed by metal jaws 36, 37 connected to the other terminal 33 of the supply. Other specified thermoplastic coatings are polystyrene and polycarbonate. Alternative welding methods include ultrasonic heating or hot gas welding, e.g. a hot nitrogen jet applied to the assembly clamped between two rotating spring loaded jaws.
Patent GB-393749-A (GB)
Title: Improvements in telegraph transmission systems
IPC: F03B13/26
Filed: 1932-05-23
Abstract: 393,749. Superposed telephony and telegraphy; non-contact-making relays. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. May 23, 1932, No. 14583. Convention date, May 23, 1931. [Class 40 (iv).] Telegraphic transmitting and receiving apparatus, particularly in systems employing superposed telegraphy and telephony, is protected from interfering line voltages by the provision of repeating coils U1 U2 between the apparatus and the line. The telegraph transmitter sends alternating current impulses into coils U1, the output side of which is connected to a full wave rectifier g1 whereby direct current impulses are sent out over the line. The leads to the telephone equipment are shown at t and the usual filters at F1, F2. The incoming direct current impulses at the receiving end may pass direct to the coil U2 in which case each impulse gives rise to two impulses of opposite polarity at the receiver. As shown in Fig. 3, however, the direct current impulses upset the balance of a choke bridge D fed with alternating current, and the resulting alternating current impulses after passage through coil U2, are rectified at g2 and pass to the receiving relay R. The alternating current is fed to bridge D through a transformer U3, rectifier G and filter F3 whereby an A.C. component (fundamental or a harmonic) passes to the bridge together with. a D.C. component for initial magnetization of the chokes. The bridge D may be normally unbalanced if a biasing potential for rectifiers g2 is required. The D.C. to A.C. conversion may be used to give an amplifying effect or the A.C. impulses may be amplified on the output side of U2. The coil U2 may be formed of a double choke set as shown in Fig. 4, the A.C. being fed to the set on the output side.
Patent GB-1446695-A (GB)
Title: Pesticidal thiophosphoric acid esters
IPC: C07F9/18
Filed: 1974-04-02
Abstract: 1446695 Pesticidal aryl phosphorothiolates CIBA-GEIGY AG 2 April 1974 [3 April 1973 5 March 1974] 14618/74 Heading C2P Novel compounds of Formula I where R 1  is CH 3  or C 2 H 5 , R 2  is n-C 3 H 7 , i-C 3 H 7 , i-C 4 H 9  or sec.-C 4 H 9 , R 3  is NO 2 , CN, allyl or CH 3 S-, R 4  is H, Cl, Br, CH 3  or NO 2  and each of R 5 , R 6  and R 7  is Cl, Br or CH 3 , may be prepared (a) by reacting a compound of Formula II with a compound of Formula III in the form of an alkali metal, ammonium or alkylammonium salt or in the presence of an acid-binding agent, (b) by reacting a compound of Formula V with a compound of Formula III in the presence of an acid-binding agent and reacting the product with a compound HSR 2  in the presence of an acid-binding agent or (c) by reacting a compound of Formula VIII with a compound MeSH where Me is alkali metal, ammonium or alkylammonium and reacting the phosphorothiolate salt formed with a compound R 2  Hal. The compounds of Formula I have insecticidal and acaricidal properties and may be used as the active ingredients in conventional pesticidal compositions, optionally together with other active ingredients.
Patent GB-1042743-A (GB)
Title: Method of covering metal shapes with fluorocarbon compositions
Inventor: MONKHOUSE THOMAS RICHARD
IPC: B29C63/48
Filed: 1962-04-16
Abstract: 1,042,743. Coating with preformed sheets. PERMALI Ltd. April 8, 1963 [April 16, 1962], No. 14631/62. Heading B6G. A layer of fluorocarbon composition, such as polytetrafluoroethylene, is applied to metal shapes, e.g. to a valve plug of frusto-conical shape, or to an internal surface of a valve body, by pre-forming the layer into the same profile as the surface to be covered, placing it against said surface and applying heat and pressure. For application to a frusto-conical surface, the layer is formed with turned-in or turned-out flanges at its ends, which pass into a groove in the surface when the layer is positioned round the surface. The metal shape with the layer is then inserted into a heated die, or a heated die is inserted into it.
Patent GB-516110-A (GB)
Title: Improvements in electron discharge tubes
IPC: H01J19/66
Filed: 1938-05-17
Abstract: 516,110. Thermionic valves. HYGRADE SYLVANIA CORPORATION. May 17, 1938, No. 14721. Convention date, May 28, 1937. [Class 39 (i)] The envelope 1, which may be of glass or metal is closed by a flattened glass header 2 through which are sealed a number of rigid rods 8 adapted to be plugged directly into a contact socket, and a metal cap 9, provided with openings through which the rods pass, is mounted against the exterior face of the header to form an electrostatic shield. A central aperture is provided on the cap to accommodate the exhaust tubulation 13, and a hollow metal boss 18, with a positioning key 20 co-operating with a grounded contact in the socket is welded to the cap. Preferably the periphery of the header is of tapered thickness where it is sealed to the envelope, and where the latter is of glass, an external metal sheath 22 may be provided which is spun over and may be welded to the rim of the cap 9. This sheath acts as a shield for the electrode mount 21. Specification 516,169, [Group XXXVI], is referred to. The Specification as open to inspection under Sect. 91 comprises also subject-matter which is described in Specifications 516,111, 516,167, and 516,168. This subject-matter does not appear in the Specification as accepted.
Patent GB-257044-A (GB)
Title: Improvements in and relating to power machines
IPC: E02F3/30
Filed: 1925-06-08
Abstract: 257,044. Withers, J. S., (Erie Steam Shovel Co.). June 8, 1925. Scoop-arm machines. - In an arrangement of power plant applied to a power shovel, in which a primary motor such as an internal-combustion engine is used to drive part of the mechanism and also to drive a compressor supplying fluid to an auxiliary motor operating the same or another part of the mechanism, the compressor is continuously driven, the arrangement described being stated to utilize the excess power of the primary motor due to decrease in the direct load to drive the compressor. An internalcombustion engine 47 drives a shaft 42 through belt &c. gearing. Shaft 42 is cranked and operates air-compressor pistons 50 and also carries a pulley from which the hoisting drum 30 is operated through belt 40, clutch 39, and toothed gearing. Air from the compressor passes to a manifold 57 one end of which communicates with a reservoir 68, the other end leading to a heater 59 (shown separate, Fig. 3) with baffles 61 and flues 64 through which exhaust gases pass from the engine. The heated compressed air is supplied through pipe 60 to a motor 14 operating the turning gear 9 and through a suitably articulated pipe to a crowding engine 25 operating the dip stick 18 which carries the shovel 17, the shovel being also operable by the cable 26 passing over pulleys 27, 29 from the drum 30 as shown. Specification 257,043 is referred to.
Patent GB-401024-A (GB)
Title: Improvements in two stroke compression ignition engines
IPC: F02B25/00
Filed: 1932-05-27
Abstract: 401,024. Two-stroke oil engines. UNDERWOOD, L. R., 5, Thurlow Park, Torquay, and GASS, E. A., Avondale, Melbourne Road, Chellaston, Derby. May 27, 1932, No. 15053. [Classes 7 (ii) and 7 (iii).] Three exhaust valves e and a bulb d which comprises substantially the whole of the cylinder clearance are arranged at the four corners of a compression-ignition engine cylinderhead. The valves are operated from a central cam-shaft g by rockers mounted on parallel shafts g<3>, and seat on screwedin seating rings e<1>. The bulb throat, which may be cylindrical, Venturi or D-shaped, is formed in a member d<1> of aluminium bronze which is screwed into the aluminium head with a surrounding air space d<3>. Cooling liquid passes from the cylinder jacket through bush connections to the head jacket which almost wholly surrounds the bulb. Air admission ports c are formed in steel liners packed at l, l<1>. Solid injection takes place through a single nozzle f<1> in the bulb. The head is held down by long studs passing through tubes in the head water-jacket and screwed into the crankcase.
Patent GB-1212347-A (GB)
Title: Improvements in or relating to ceramic complex metal oxides
Inventor: SNOWDEN PAUL
IPC: C04B35/26
Filed: 1967-04-03
Abstract: 1,212,347. Mixed oxides; ceramics. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 18 March, 1968 [3 April, 1967], No. 15247/67. Headings C1A and C1J. [Also in Division H1] A ceramic complex metal oxide crystalline product having ferroelectric or ferromagnetic properties is prepared by forming an alkoxide of two or more of the transition metals and the metals of Groups I, II, and VB of the Periodic Table, mixing the alkoxides in the fluid phase, and converting the mixture to the complex metal oxide product. Stcichiometric compounds or solid solutions of the oxides may be formed. Alkoxides of Zr, Ti, Nb, and Sn may be prepared by reacting the metal chloride with alcohol in the presence of ammonia. In examples solutions in n-butanol of butoxides of Pb, Zr, Ti and Nb, with or without. Sn, are mixed, hydrolysed by spraying into water containing ammonia, and the precipitate is washed, filtered, and calcined in an oxygen atmosphere; other examples describe the preparation of lead titanate, zirconate, and niobate. Hf may partly or wholly replace Zr. electric motor, the tape 6 then passing through a groove in a guide shoe 14 resting on the glass pane as the trolley moves horizontally. Feeler rollers 30, 31, Fig. 4b, move with the tape applying section, one behind the other to detect an edge k of the glass pane. The respective spring- biased lever mechanisms of the feeler rollers 30, 31 actuate switches so that the horizontal transport of the machine is first slowed down when the feeler 31 reaches the edge k and then stopped when feeler roller 30 arrives. At the same time they activate an hydraulic clamping device, Fig. 5 (not shown), to prevent the guide shoe 14 dropping over the edge k. The tape 6 is then cut by reciprocating blades 23a, 24a, Fig. 1, adjacent the feeler rollers 30, 31. The clamp is released and an hydraulic jack (5), Fig 7 (not shown) raises the tape applying section to its original position on the columns 4 and the trolley returned to its initial position. A cantilever spring (12), Figs. 2a, 2b (not shown), located beneath the guide shoe 14 projects across its groove to prevent the tape from falling whilst the tape applying section is raised and lowered, and also to prevent retraction of the tape during application.
Patent GB-1402840-A (GB)
Title: Granulator
IPC: B01J2/16
Filed: 1974-04-05
Abstract: 1402840 Blending powders W GLATT 5 April 1974 [5 April 1973] 15302/74 Heading B1C [Also in Division F4] Apparatus for fluidising, blending and granulating a powder has a bell-shaped container upper part 12 which can be adjustably positioned by hydraulic or pneumatic cylinders 24 above a bottom plate 10 to provide an annular gas entry 72, a liquid spraying device 38, and a gas outlet 42. The lower edge 20 of the container part 12 projects inwardly to form a guide surface. There may be a stirrer 44, a comminuting tool 28, a gas outlet filter 40, a powder inlet 36 and product outlets 50 closable by a sliding shutter 52. The gas inlet is applied from an annular pleneum chamber 70 defined by the container wall and by a wall 60 upstanding from the bottom plate 10, and is closed by a sliding seal 62 or by a bellows (66, Fig 2 not shown). In operation a dense granulate may be produced by first preparing an agglomerate with the container part 12 lowered on to the bottom plate, and then raising it and drying the agglomerate with hot air; or a lighter granulate may be formed by supplying a gas, preferably heated air, simultaneously with commencement of liquid spraying.
Patent GB-1041436-A (GB)
Title: Improvements in or relating to surface measuring devices
IPC: G01B11/30
Filed: 1964-04-14
Abstract: 1,041,436. Optical apparatus. SPEEDLAP SUPPLY CORPORATION. April 14,1964 [April 22, 1963], No. 15399/64. Heading G2J. [Also in Division G1] In a device for checking the surface flatness of a workpiece S, light from a source 50 passes through a collimating lens 52 to impinge on the undersurface of a plate 38 formed with a diffraction grating 46, on which is laid the workpiece S. The diffracted light is reflected by a mirror 68 towards an observation window 78. The light in the device passes through apertured baffles 60, 64. Typical diffraction patterns are shown in Figs. 6 and 9 (not shown), where Fig. 6 shows the typical pattern obtained with a flat surface, whereas Fig. 9 shows the pattern of an indented surface. Plate 38 is movably mounted in the aperture of cover plate 14 and may be tilted by gear actuated means. Markers are provided to indicate possible plate settings, the various angles of tilt increasing and decreasing the apparent time spacing of the grating.
Patent GB-939655-A (GB)
Title: Improvements in and relating to regenerative heat exchangers
Filed: 1960-05-02
Abstract: 939,655. Thermal regenerators. H. BRANDT, [trading as APPARATEBAU ROTHEMUHLE Dr. BRANDT & CO.]. May 2, 1960, No. 15420/60. Class 64 (1). In a thermal regenerator of the rotary duct, stationary matrix type, employing adjustable roller assemblies between the ends of the rotary ducts and the adjacent end faces of the matrix, the rollers 17 project into the regenerator casing through slots formed therein, the slots being otherwise substantially closed by sheet members 19, and the arrangement being such that any necessary adjustment of the roller position due for example to wear, may be made from outside the regenerator. Figs. 3 and 4 show one form in which the support rollers are each carried on two lever arms 21 which pivot at one end on a fixed pin 22, adjustment being effected by a screw 23 at the free end of the arms 21. A frame member 16 forming the end of the rotary air duct (not shown) rides on the rollers as it moves over the matrix end face, contact being maintained by spring pressure. The rollers are adjusted to maintain a slight clearance gap 24 between the air duet end face and the end face of the matrix 1. A further form is described (Figs. 7, 8, not shown), in which adjustment of the roller is effected by a wedge movable by a screw.
Patent GB-695940-A (GB)
Title: Improvements in and relating to grinding wheels
Inventor: TEAGUE ERNEST DOUGLAS
IPC: B24D3/34
Filed: 1952-06-19
Abstract: A grinding wheel comprising abrasive grains bonded by and distributed in resin or rubber has embedded therein one or more reinforcing layers of glass fabric and one or more reinforcing layers of linear superpolyester fabric, such as that known under the Registered Trade Mark "Terylene."  The description is the same as that in the parent Specification except that linear superpolyester fabric is used instead of linear superpolyamide fabric.
Patent GB-697964-A (GB)
Title: Improvements in percussion tools
IPC: B25D11/10
Filed: 1950-06-21
Abstract: 697,964. Percussive drills. GOLDSCHMIDT, H. J., [Representative of GOLDSCHMIDT, R.]. June 6, 1951 [June 21, 1950], No. 15548/50. Class 124. A percussive tool comprises an anvil, a helical track formed by a groove the sides of which diverge in the direction of the mouth of the groove, a striker mounted for rotation about the track and for reciprocation towards and away from the anvil, a motor for rotating the striker, coupling means displaceably mounted on the striker for engaging the track to move the striker away from the anvil, and means for reversing the axial movement of the striker at the end of its stroke away from the anvil whereby the coupling means is disengaged from the track during the whole of the movement of the striker towards the anvil. As shown, a striker 11 is splined to a motor shaft 10 and has attached to it a lever 16 so pivoted at 18 that it is urged towards a helically grooved track in a post 9 attached to an anvil 5. On rotation of the striker the lever produces movement of the striker away from the anvil until projections 14 on the striker engage projections 15 on a head 3 and the inertia of the lever causes it to rotate on its pivot and disengage from the track. The upper part of the lever is designed to wedge with the top of a slot 17 until the striker hits the anvil causing the lever again to engage the track. The lever may be a rotatably supported cone, Fig. 4 (not shown). In a modification, Fig. 3 (not shown), the lever is held in the disengaged position by an inertia ring. Specification 589,424 is referred to.
Patent GB-529779-A (GB)
Title: Improvements in or relating to clamping apparatus for use in shoemaking
IPC: A43D21/12
Filed: 1939-05-26
Abstract: 529,779. Assembling shoes. DEL-MAC SHOE PROCESS CORPORATION. May 26, 1939, No. 15606. Convention date, May 27, 1938. Addition to 476,974. [Class 17 (i)] Apparatus for assembling a sole and upper when carrying out the method of making shoes described in parent Specification, comprises a narrow form 50 on which a sole S is held while the edge of an upper U is temporarily attached to the edge of the sole. The sole is held against the plate 50 by a pair of abutments 36, the outer of which is angularly adjustable. An adjustable gauge 65 has points 68 at its forward end for facilitating the positioning of the sole. The abutments are carried by an arm 35 which can be swung away from the sole support in a bearing 40, a spring plunger normally holding the arm in operative position. The plate 50 is loosely and detachably carried at the upper end of a post 20 urged upwardly by a spring and depressed, for work-changing by a treadle 26. The toe part 57 of the sole plate is adjustable away from and toward the remainder, a detent 63 engaging one of a number of notches in a member 51 secured to the rear portion.
Patent GB-627251-A (GB)
Title: Improvements relating to rivetless chains
IPC: F16G13/02
Filed: 1946-05-23
Abstract: 627,251. Chains. WEBB CO., J. B. May 23,1946, No. 15614. Convention date, May 7, 1945. [Class 24] A rivetless chain employs a connecting pin which is oval in shape and adapted where necessary to replace the normal cylindrical pin to reduce the overall length of chain. The chain comprises centre links 1 having thickened end portions 6, and side bars 2, all slotted and joined together by a connecting pin comprising a shank 14, and T-heads 15. The shanks 14 may be truly circular or oval, e.g. two circular arcs, the centres'of which are separated by a short distance in the direction of the length of the chain. The chain is assembled by passing the pins through the slots in the links and side members, sliding the latter longitudinally, the thickened portions 6 causing the heads of the pins to pass into transverse slots 12 in the side bars 2. The substitution of an oval pin for any circular one shortens the chain by the distance between arc centres. U.S.A. Specification 870,704 is referred to.