baber/WOPTO huggingface dataset:
Patent GB-1071686-A (GB)
Title: Electro-photographic copying apparatus
Inventor: SELIGER WALTER
IPC: G03G15/26
Filed: 1964-07-21
Abstract: 1,071,686. Electrophotographic copying apparatus. PENTAGON DRESDEN KAMERA-UND KINOWERKE VEB. July 21, 1964, No. 29515/64. Heading G2H. An electrophotoprophic copying machine in which charging, exposure and development of a photo-conductive layer, and transfer of the developed image to paper take place in the same housing, has a horizontal open original image frame 2 and an adjacent carrier 9 in the same horizontal plane for the photo-conductive layer. The corona discharge electrode 12 shields the photo-conductive layer prior to exposure for which it is pivotally raised by handle 13. Carrier 9 is tilted by bearing block 10 for cascade development of the exposed layer by powder from containers 11. The original held by mask 4 is illumined by means not described and its image is projected by mirrors 6, 8 and lens 7 on to the carrier 9.
Patent GB-932876-A (GB)
Title: Improvements in or relating to floor covering material
Inventor: ROBERTS FRANK SOMERVILLE
IPC: D06N7/00
Filed: 1958-09-15
Abstract: 932,876. Coated carpets; pile fabrics. DURIE & MILLER Ltd. Sept. 1, 1959 [Sept. 15, 1958], No. 29532/58. Classes 74 (2) and 140. A tufted carpet having a porous cellular underlayer is produced by spreading the base of the tufted carpet with a mixture of a foamable polyvinyl chloride paste, the carpet is subjected to conditions under which foaming of the mixture occurs, and is treated to set the resulting foamed resin material, so that when the latter is set the carpet is provided with a firmly adherent layer having a porous cellular structure. The paste may consist essentially of polyvinyl chloride and a foaming agent, and the coated carpet is heated in order to cause the foaming agent to expand the solidifying polyvinyl chloride.
Patent GB-1044666-A (GB)
Title: Engine throttle control mechanism
IPC: F02D9/02
Filed: 1963-07-26
Abstract: 1,044,666. I.C. engine throttle valves. KELSEY-HAYES CO. July 26, 1963 [Aug. 9, 1962], No. 29667/63. Heading FIB. [Also in Division G3] In a control mechanism for an engine throttle, a valve mechanism 41, Fig. 1, is normally actuated by a treadle 84 to operate a fluid pressure motor 15 to move the throttle lever 11 away from an idling position, the treadle has a first normal position B from which it is movable to operate the valve mechanism and when a failure of the fluid motor supply occurs a mechanical connection between the treadle and the operating lever is established and the treadle is moved to a second normal position from which it is manually movable to operate the throttle lever. In the normal vacuumassisted operation, the parts are in the position shown in Fig. 3 (not shown), in which ambient air is drawn through filter 74, chamber 37, bores 57 and 56 into a groove 54 in valve 50 and inherent leakage of air past land 55 passes via port 43, line 45 and port 46 into chamber 36. Chamber 36 is normally subjected to a vacuum applied through line 44, port 42, groove 52 and port 43. The reduced pressure differential across piston 23 allows spring 24 to move casing 22 and valve body 41 slightly to the left in Fig. 3 thus disconnecting port 43 from groove 54, the valve body 41 and valve 50 assuming a balanced position. If the treadle 84 is depressed from position B, the cylinder 22 is displaced to the right, the valve slide 50 remaining stationary when button 67 engages stop 68 and ambient air is admitted to chamber 36. The reduced pressure differential on piston 36 allows spring 24 to exert a pull on rod 14 to open the throttle valve, the threadle 84 being slightly backed off to return the valve mechanism to the top position at the desired engine speed and full throttle opening corresponding to treadle position C. Failure of the vacuum supply to chamber 36 causes the spring 24 to move the entire motor casing to the left carrying the button 67 out of engagement with stop 68 but without movement of the throttle lever 11, the treadle 84 being moved to position A for manual operation. In a modification, a check valve 92, Fig. 4 (not shown), closes on vacuum failure so that a vacuum is trapped in pipes 44 and 93 and in reservoir 94 to provide for operation of motor 15 after the engine is stopped.
Patent GB-698951-A (GB)
Title: Improvements in and relating to gripping and bending forceps for dental and other medical purposes and for the manufacture of precision tools
IPC: A61C3/14
Filed: 1950-12-05
Abstract: 698,951. Pliers. KOHLER, L. Dec. 5, 1950 [Dec. 5, 1949], No. 29800/50. Class 61 (ii). [Also in Group VI] Gripping and bending forceps have jaws curved out of the plane of the handle, the free ends of the jaws not projecting beyond the width of the joint including projecting parts of the hinge. The free ends 3 and backs 8 of curved jaws 2 of forceps pivoted about a hinge pin 1 (Fig. 1) do not extend beyond the width 4-5 of the hinge 1. The free ends 12 and backs 13 of curved jaws 9 of parallel jaw forceps (Fig. 2) do not extend beyond the width 14-15 of the joint including heads 16, 17 of guiding pins. In another embodiment (not shown) the backs only of the jaws may extend beyond the width of the joint.
Patent GB-1505255-A (GB)
Title: Process and apparatus for forming double-walled units
IPC: B29C51/26
Filed: 1974-07-05
Abstract: 1505255 Moulding double-walled articles IMPERIAL CHEMICAL INDUSTRIES Ltd 14 May 1975 [5 July 1974] 29896/74 Heading B5A A double-walled article is made by clamping a pair of thermoplastics sheets about a separation member to provide a sealed space between the sheets, heating at least one of the sheets to a temperature about its softening point, applying a pair of continuous frame clamps 10, 12, Fig. 3, inwardly of the separation member with sufficient pressure to bond the sheets together in the area of application of the slamps, and stretching a softened sheet by the application of vacuum to the surface of the sheet outside the sealed space until the stretched sheet takes up a desired position and the second sheet moves relative to the first sheet by an amount determined by the pressure in the space between the sheets and the temperature of the second sheet. The sheet or sheets may be heated prior to, rather than subsequent to, clamping about the separation member, and the desired pressure may be adjusted to a predetermined value before the sheets are stretched. At least one of the sheets may receive a heat activatable adhesive over the clamping area.
Patent GB-1155191-A (GB)
Title: Crane safety device.
Inventor: GILLATT ALF
IPC: B66C23/90
Filed: 1965-07-14
Abstract: 1,155,191. Jib crane safety devices. G. W. SPARROW & SONS Ltd. 3 Oct., 1966 [14 July, 1965], No. 29932/65. Heading B8B.  In a safety device for a jib crane the tension in the luffing line, due to the maximum load of the jib at maximum and minimum working angles is caused to exert the same pressure on a pressure-sensitive device. As shown, a main jib 2 is luffed about a pivot 4 by a multi-ply line 11 including reeved blocks running from one arm of a lever of a safety device 12 to an axis 5 for a secondary jib 3. The device 12 is mounted on the crane body 1 so that the underside of a second arm 20 of the lever is in contact with the operating button of an hydrostatic cell 30. The required shape of the lever of the safety device 12 is determined using a simulated lever by a method described with reference to Fig. 2. It is stated that a lever calibrated for a maximum jib length may be used when any shorter jib length is used and that the pressure sensed by the cell is substantially constant over the working range. The hydrostatic cell 30 is connected to an indicator device 32 with two ranges: one for " free duty " and one for " blocked " use. The secondary jib 3 is luffed by a line 8 connected to a lever arm 9 of a second safety device 10. (The lower part of the Figure shows an alternative position for the jib 2 with a different position for the device 10 and also an alternative length of jib 2<SP>1</SP>). Fig. 4 (not shown) illustrates a circuit for the indicator 32 wherein successive lamps under a scale over which a pointer moves indicate " safe," " maximum " and " over " load. An alarm is rung at "overload." The device 10 is also provided with an indicator 40 with successively illuminated lamps and an alarm. It is possible to lead the hydraulic pressure exerted by the two safety devices 10, 12 through a shuttle valve to a single indicating device, overload conditions either of the secondary jib or the crane as a whole being then indicated identically.
Patent GB-648669-A (GB)
Title: Apparatus for drying hair
IPC: A45D20/22
Filed: 1948-11-19
Abstract: 648,669. Hair driers. SMITH, E. E., [nÚe ELDER]. Nov. 19, 1948, No. 30140. [Class 81(ii)] The hood of a hair drier is formed with spaced inner and outer shells, the latter having a series of ports through which dry gas is supplied to the intervening space, and a motor-driven means for circulating air through the space. In the form described, the outer shell 24 has ports 43, and dried gas from a pipe 14 is fed to these by means of a conduit 41 so as to mix with a stream of air circulated by a fan 28 and passed into the head space through orifices 26. Heating coils 44 are placed adjacent to the gas inlets and a vent 40 is provided for the gradual removal of saturated air. The hood is mounted on a suitable support pillar and gas is supplied from an adjacent cylinder, the outlet valve of which may be under the control of the user by means of a conveniently placed operating handle, see Fig. 1 (not shown),
Patent GB-675990-A (GB)
Title: Improvements in automatic regulators for compressors
IPC: F04B49/24
Filed: 1949-11-24
Abstract: 675,990. Compressors. SCHNEIDER & CIE. Nov. 24, 1949 [Nov. 25, 1948], No. 30194/49. Class 8 (i) An automatic regulating device for maintaining approximately constant the power absorbed by a compressor, the intake pressure of which varies between more or less widely spaced limits, comprises a relief valve 3 communicating on one side with the compression space of a cylinder 1 and on the other with a chamber 4 connected to the compressor inlet. The valve 3 is normally closed by a spring 5.but may be opened during part of the compression stroke by a plunger 6 in a cylinder 7 connected to the outlet of a solid injection type pump 8 having a plunger 11 operated by a cam 28 on the compressor crankshaft 29. The plunger 11 has a recess with an inclined face 12 and a duct 10 to the pressure face. The pump is supplied with oil from a reservoir 25. The plunger 11 is rotated by means of a pinion 13 engaging a rack 16 controlled by a piston 17 in a cylinder 18 connected to an oil reservoir 19 subjected to the inlet pressure.
Patent GB-386382-A (GB)
Title: Improvements in or relating to distillation
IPC: C10G7/00
Filed: 1931-10-31
Abstract: In the vacuum distillation of oils to obtain lubricating fractions by passing oil through a <PICT:0386382/III/1> tubular heater 13 into a fractionating column preferably of the kind described in Specification 356,172 comprising rectifying sections 17 .. 21 and stripping sections 30, 31, condensate collecting from a condenser 48 in a receiver 53 being returned as reflux through a pipe 56, the fractionation is controlled by introducing into the column a heated fluid of higher molecular weight than water and less susceptible to decomposition than the fraction of highest boiling-point resulting from the distillation. The fluid used may be mercury or an alloy or a hydrocarbon fraction produced in the distillation, e.g. the fraction collecting in the stripping section 31 may be withdrawn by a pump 161 and after passage through a heater 62 returned to the column through a pipe 66 situated below the pipe 16 supplying the crude oil. Alternatively a part of the condensate collecting in the vessel 53 may be used and directed to the heater 62 through a pipe 64, while extraneous fractions may be introduced through a pipe 68.  Steam may be supplied through valved pipes 58, 59.
Patent GB-833982-A (GB)
Title: Improvements in or relating to the production of enriched uranium and compounds thereof
Inventor: JOHNSON KEITH DAVID BEBB
IPC: B01D59/00
Filed: 1954-10-21
Abstract: A solid compound of uranium and fluorine, which is enriched in the isotope U235, is produced by bringing uranium hexafluoride vapour enriched in the isotope U235 into contact with uranium tetrafluoride to form a fluoride or fluorides of intermediate composition. Reaction preferably takes place at 60-200 DEG  C. and products of composition U4F17, U2F9 and UF5 may be obtained.  Enriched uranium metal is formed by reducing U2F9 with magnesium or calcium; UF5 is reduced by hydrogen chloride at 150 DEG  C. or more to UF4 and this compound is reduced by magnesium or calcium to enriched uranium metal.ALSO:Uranium metal enriched in the isotope U235 is produced by reduction of an enriched uranium fluoride having a composition intermediate between UF6 and UF4 (see Group III). U2F9 is reduced with magnesium or calcium; UF5 is first reduced with hydrogen chloride at 150 DEG C. or more to form UF4 and then this compound is reduced with magnesium or calcium.
Patent GB-704379-A (GB)
Title: A new or improved method and apparatus for thickness testing
IPC: G01B5/10
Filed: 1951-12-28
Abstract: 704,379. Gauging yam thickness; recording apparatus. PACIFIC MILLS. Dec. 28, 1951 tDec. 30, 1950], No. 30349/51. Classes 106 (2) and 106 (4). [Also in Group XXXVIII] Yarn is fed between a fixed and movable roller 107, 106, Fig. 3, the roller 107 being rotatable about its axis 108 and the roller 106 being rotatable about its axis in a lever 102 pivoted at 109 in the main frame 150. The roller 107 is power driven, and the lever 102 may be weighted to increase the pressure between the rollers. The roller 107 is grooved and the roller 106 is provided with a tongue as shown in Fig. 6. Variation of the thickness of the yam separating the rollers is detected by a follower 110, Fig. 3, which rests against a fixed stop 104 when the rollers are not separated. Movement of the follower member 110 is transmitted to the member 112 of an electromagnetic displacement gauge 100. Movement of the member 112 displaces an armature 34 from a position equidistant from coils 200, 201, Fig. 4, thus increasing the inductance of one coil and reducing that of the other to unbalance a bridge detecting circuit, Fig. 8, the rectified output of which is passed to a D.C. amplifier 222 and thence to a recording milliameter 224 operating a pen 226 co-operating with a travelling paper sheet S. The apparatus may be zeroed by means of a variable potentiometer 212 connected between the coils 200 and 201 ; 214 is a sensitivity control. Situated below the recording pen 226, Fig. 1, is a bracket 2 carrying three fixed pens which draw three parallel lines A, B, C, along the travelling sheet S. The line C represents a datum line and the pen C is adjustable across the width of the sheet to superimpose this line over the electrical zero line from the pen 226. The pens a, b, which draw the lines A, B, are adjustable together towards or away from the centre line to provide fixed reference or tolerance lines between which the variable line R should be contained during normal working conditions. The pens a, b, c are adjustable by means of fine screw threads of known type shown in Fig. 9. Specification 526,847, [Group XXXVI], is referred to.
Patent GB-912256-A (GB)
Title: Improvements in or relating to the manufacture of pistons
IPC: B22D19/00
Filed: 1961-08-23
Abstract: 912,256. Making pistons; composite casting. SCHMIDT G.m.b.H., KARL. Aug. 23, 1961 [Aug. 23, 1960], No. 30458/61. Classes 83 (1) and 83 (2). [Also in Group XXVI] In a method of making a light alloy piston in which the head is of a cast material and the shaft is pressed or forged and in which the head may contain a cooling system, ring elements or other metal elements, the cast and forged parts of the piston are joined by means of a fused junction. A cast billet is forged or pressed and, if necessary, finished by machining to form a blank a having a domed surface to which is applied a metal layer d, e.g. zinc prior to inserting it into a chill mould e. A zinc coated cooling system l is positioned on the blank with its inlet and outlet ends engaging the bores g and the head portion of the piston is then cast on. The metal layer d and part of the metal beneath it flows into the annular recess # during pouring. The cast metal may be of a different composition from the blank a. A sand or water cooled metal core is inserted in the cavity b to effect cooling of the head after casting. A ring element m may also be cast in position.
Patent GB-1057121-A (GB)
Title: Improvements in or relating to typesetting apparatus
IPC: B41B27/00
Filed: 1963-08-01
Abstract: 1,057,121. Strip-perforating machines; justifying type. HARRIS INTERTYPE CORPORATION. Aug. 1, 1963 [Aug. 1, 1962], No. 30588/63. Addition to 989,626. Heading B6W. The apparatus described in Specification 989,626 is modified by the incorporation of visual indicators 200, 202, Fig. 1 (not shown), which show the space remainder in absolute measure, respectively for minimum and maximum space-band, width, and circuitry, Fig. 2 (not shown), for converting the space count into absolute values and for controlling the inductors. In another form. Fig. 3 (not shown), the information is read by means of separately movable minimum and maximum width pointers 260, 262 co-operating with a movable band 255 indicating space used. The band, and the indicators 200, 202, are movable in reverse direction for corrections.
Patent GB-820604-A (GB)
Title: Improvements in gas-depolarized primary galvanic cells and batteries
IPC: H01M12/06
Filed: 1957-10-01
Abstract: 820,604. Batteries. UNION CARBIDE CORPORATION. Oct. 1, 1957 [Oct. 8, 1956], No. 30626/57. Class 53. A gas-depolarized cell consists of a metal anode 10, Figs. 4, 5, of zinc, aluminium, magnesium, or cadmium, for example, in contact with a paper, methyl cellulose or other porous separator 12 impregnated with zinc chloride solution or other electrolyte, and surrounded by a plastic frame 14. A regenerated cellulose or other permeable diaphragm 16 covers the frame and separator, and below the diaphragm is a mass 18 of permeable material such as paper to which acetylene black or platinum has been applied. A second waterproofed layer 20 which may consist of paper rendered conductive by carbon black serves as a diffuser to allow the passage of gas to the mass 18. The cathode consists of a steel plate 24 covered with a carbonaceous paint 22, 26. All the elements of the cell are shaped as the major part of a circular disc, as shown in Fig. 4. A number of cells are stacked together and joined in parallel to form a pack, as shown in Figs. 2, 3. A circular ring 30 is divided by a chord 32 into two unequal parts, the stack of cells being housed in the larger part, and the terminals 34, 36 being brought out through gas-tight openings in the chord. The sides of the pack are closed by covers 38, 40 sealed to the ring 30. When the cells are to be activated, gas, for example chlorine, is admitted through openings 42, 44 which are closed by frangible diaphragms 46, 48 until the cells are required for use. A battery is made up from a number of packs joined in series and enclosed in a container 50, as shown in Fig. 1. The container is closed by a cover 52 carrying the terminals 54, 56. Chlorine under pressure is contained in a coiled tube 58, one end of which is sealed, the other end 61 leading to the interior of the container. A valve 62 controls the flow of gas. The packs are maintained under pressure by tapes passing round end boards 66.
Patent GB-1525394-A (GB)
Title: Heat treating apparatus and method
IPC: H05B7/00
Filed: 1975-09-25
Abstract: 1525394 Magnetic control of plasma DAIDOSEIKO KK 25 Sept 1975 [2 Oct 1974 12 Oct 1974] 30711/77 Divided out of 1525393 Heading H5H Heat treatment apparatus comprises a heat treatment region, means spaced from the treatment region for ejecting a plasma stream for heat treatment of material at the treatment region, and means for generating a rotating magnetic field acting on the plasma to cause the plasma to rotate when it reaches the material to be treated. In Fig. 1, the plasma 42 from a non-transferred torch is expanded to cover a bigger area of a workpiece by a rotating radial magnetic field 47 produced by an electromagnet 44 designed like the stator of a polyphase (three phase) electric motor. Coils 46 are wound about poles 45 of the stator. The direction of rotation of the field 47 may be reversed after a set angle or set time. Device 50 which could be a frequency converter or means for changing the number of poles enables the rotational speed to be adjusted whilst device 51 alters the current or voltage to vary the field intensity. The rotation of the plasma 42 causes it to expand centrifugally. When a transferred torch is used, instead of the plasma having current induced in it by the rotating field, the transfer current in the plasma causes the plasma to be deflected by the magnetic field, and the rotation of the field causes the deflected plasma to sweep out a bigger area than an undeflected plasma. The plasma torch may be an induction coupled torch (Fig. 4, not shown). The rotating expanded plasma may treat metal in a melting pot (Fig. 5, not shown). In Fig. 6 (not shown), a chemical reactor comprises a plasma torch working in the transferred mode, the arc extending between the torch and an annular electrode. Particulate material e.g. coal is introduced to the plasma and reacts chemically with a gaseous atmosphere such as hydrogen, carbon dioxide, air or water vapour. The plasma is rotated and enlarged by a surrounding rotating field producing coil and the particulate reaction products pass through the annular electrode to a collecting chamber. The means for producing a rotating magnetic field may comprise an annular magnet with alternating N and S poles which is mechanically rotated about the plasma. The magnet may be a permanent magnet or an electromagnet (Fig. 7, not shown) and its speed of rotation is controlled. In an alternative embodiment (Fig. 8, not shown) the induction coil of an induction coupled plasma torch produces a rotating magnetic field which not only produces the plasma but also rotates it.
Patent GB-442910-A (GB)
Title: Vacuum servo brakes for vehicles
IPC: B60T13/24
Filed: 1934-10-26
Abstract: 442,910. Brakes. PEZOT, J. J. M., Garage Lenoir, Blonville-sur-Mer, Calvados, France. Oct. 26, 1934, No. 30749. Convention date, Nov. 30, 1933. [Class 103 (i)] Vacuum brake mechanism for vehicles comprises a pair of levers J, K rigidly connected together by a pin Land mounted on a common pivot J<1> in a member J<2> carried by the cylinder T, the pin L being connected to the rear brakes and the lower end of the lever K, which may be of sector form, to the front brakes. The levers are operated by the piston H of the cylinder T by the rod I. The pin L is slidable in a slot A<1> in a member A which is connected at a to the pedal or equivalent and by rod B and lever C to the control valve of the device which comprises a slide valve D in a casing open to the cylinder T. Normally, the cylinder is connected to atmosphere through a passage F in the valve rod D<1> and a passage E. Movement of the member A operates the levers J, K by engagement with the pin L and at the same time, the slide D covers the passaga E and uncovers the passage G connected to the vacuum source so that the piston H also applies pressure to the levers, the pin-and-slot L, A<1> permitting this without the valve mechanism B, C being affected.