baber/WOPTO huggingface dataset:
Patent GB-1294016-A (GB)
Title: Luminescent diodes
Inventor: DOSEN M
IPC: H01L21/208
Filed: 1970-04-17
Abstract: 1294016 Luminescent PN diodes SONY CORP 17 April 1970 [18 April 1969] 18537/70 Heading H1K In the manufacture of a luminescent diode by liquid epitaxial growth on a GaP substrate oxygen is diffused into a melt containing GaP from a flow of carrier gas containing gallium monoxide vapour before the melt is brought into contact with the substrate. In the embodiment a tellurium doped substrate and a melt consisting of gallium, gallium phosphide and tellurium are disposed in one boat and gallium and gallium trioxide in a second in an openended quartz tube with separate heaters for the two boats. Nitrogen (or argon) is flowed over the second boat and picks up gallium monoxide in a concentration determined by the temperature and flow rate and carries it forward to the melt. When the melt contains enough oxide it is flowed over the substrate and cooled to deposit the epitaxial layer. During cooling zinc in vapour or powder form can be added to the melt or zinc diffused from vapour into the completed layer to form a PN junction within the oxygen-doped region.
Patent GB-820780-A (GB)
Title: Cyclopentanophenanthrene derivatives
IPC: C07J1/00
Filed: 1955-11-29
Abstract: 19-Norsteroids are prepared from the corresponding 19-hydroxy derivatives or esters thereof by elimination of formaldehyde by means of a strong alkali.  Preferred starting materials are steroids of the D 4-3-keto-pregnene, androstene, and etiocholenic acid series bearing conventional steroid side-chains, e.g. -COOH, -COCH3, and -COCH2OH, and the process is normally effected with an alkali metal hydroxide in aqueous-alcoholic media at an elevated temperature, e.g. 50 DEG C. In examples: (1) D 4 - androstene - 17b ,19 - diol - 3 - one diacetate in methanol is treated at 50 DEG  C. with 13 per cent aqueous sodium hydroxide, and the precipitated 19-nor-testosterone collected and crystallised from hexane; (2) D 4-androsten-19-ol-3,17-dione is treated as in (1) to yield D 4-19-nor-androstene-3,17-dione; (3) D 4-pregnen-19-ol-3,20-dione similarly yields 19-nor-progesterone; (4) 19-hydroxy-3-keto- D 4-etiocholenic acid in methanol is treated as in (1) and the product acidified, when 19-nor-3-keto- D 4-etiocholenic acid precipitates. Starting material.  19-Hydroxy-3-keto- D 4-etiocholenic acid is prepared by oxidation of D 4 - pregnene - 19,21 - diol - 3,20 - dione in ethanol with aqueous periodic acid. Specification 748,824 and U.S.A. Specification 2,671,752 are referred to.
Patent GB-567754-A (GB)
Title: Improvements in or relating to wall seal devices
IPC: B64D13/04
Filed: 1942-12-31
Abstract: 567,754. Pipe &c. joints. WESTLAND AIRCRAFT, Ltd., and RICHARDS, S. T. A. Dec. 31, 1942, No. 18606. [Class 99 (i)] [Also in Groups XXVI and XXXVI] A seal for pipes, cables, &c. u passing through a wall a comprises a rubber &c. packing d, either formed in two parts or slit to enable it to be positioned on the pipe &c. without threading, and clamped between plates h, i, also in two parts, by bolts &c. traversing the wall orifice. In another form, clamping plates slotted to straddle the pipes &c. u are provided in addition to the plates h, i which are made small enough to enter the orifice. The surfaces of the joints or slits in the rubber &c, packing may be cemented after assembly.
Patent GB-904843-A (GB)
Title: Hydraulic power transmission systems
IPC: F15B13/06
Filed: 1960-05-26
Abstract: 904,843. Shovelling machines. FORD MOTOR CO. Ltd. May 26, 1960 [Nov. 20, 1959], No. 18625/60. Class 68 (1). [Also in Group XXIX] An hydraulic system for a digger having a lifting boom and swing frame comprises valve means 10 for selectively directing fluid flow from a pair of hydraulic pumps 16, 18 to a plurality of hydraulic cylinders 48, 50, 70, 78, 86, 94 adapted for operation singly or in multiple, relief valves 24, 110 for venting the pumps in response to a predetermined pressure rise in the system, an unloading valve 106 biased to open at a pressure below that of the relief valves, and a check valve 108 for isolating the output of one of the pumps in response to opening of the unloading valve whereby the output of the other pump remains effective in the system. The pumps 16, 18, which may deliver fluid at the same or different pressures and volumes, are driven by a single source of power and connected by lines 20, 104 to the valve 10 which has spools 44, 46 controlling stabilizing cylinders 48, 50, a spool 68 controlling a crowd cylinder 70, a spool 76 controlling a lift cylinder 78, a spool 84 controlling a pitch cylinder 86, and a spool 92 controlling a swing cylinder 94. If the pressure in the circuit to the cylinders 50, 70, 78 or 86 rises above a predetermined value, the unloading valve 106 opens to discharge the output of the pump 16 to a passage 26 leading to a reservoir 14, the check valve 108 closing in response to the drop in pressure from the pump 16 to permit the output from the pump 18 to continue to supply the cylinders 50, 70, 78, 86. If the pressure in the circuit to the cylinders rises still further, the output from the pump 18 is relieved by the relief valve 110 opening. The output from the pump 16 is available to operate the stabilizing cylinder 48 and swing cylinder 94, irrespective of whether the unloading valve is open or closed, by moving the respective spool 44 or 92 to its maximum position, the output pressure of the pump 16 being determined by the relief valve 24. Thus, the output from pump 18 may be directed to the cylinders 50, 70, 78, 86 while the output from pump 16 is directed to the cylinders 48, 94. A one-way valve and throttle are provided in the line to the upper end of the lift cylinder 78 to control the speed of operation thereof in one direction. Shocks are prevented in the circuit to the swing cylinder 94 by valves 100, 102.
Patent GB-1512994-A (GB)
Title: Channel selectors
IPC: H03J7/18
Filed: 1975-05-05
Abstract: 1512994 Keyboards with coded outputs MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 5 May 1975 [20 May 1974] 18678/75 Heading G4H [Also in Division H3] A keyboard 1 is connected with circuitry 5 which is such that a single-digit number, e.g. six, need only be entered as "6" rather than "06". The keyboard forms part of accessing circuitry 1-7 for the memory 16 of a channelselector for a voltage controlled tuner 18 (see Division H3). A first-selected digit passes via diode matrix 2 to a store 3 in which it is entered by a LOAD-1 signal d<SP>1</SP> form a monostable 5-1, at the same time, a CLEAR output l from a NAND gate and differentiator, connected to monostables 5-2, 5-3 clears a second store 4. If a second digit is selected during the unstable period of monostable 5-3 (i.e. if there is a pulse f from 5-2 while the output i of 5-3 is high), a LOAD-2 signal m<SP>1</SP> from a second NAND gate and differentiator enters the contents of store 3 in store 4, whereafter a second LOAD-1 signal d<SP>11</SP> enters the second digit in store 3. The contents of stores 3, 4 may be displayed at 8.
Patent GB-530595-A (GB)
Title: Improvements in pumps
IPC: F04B1/29
Filed: 1939-06-28
Abstract: 530,595. Swash-plate pumps. MERCIER, J. June 28, 1939, No. 18795. Convention date, July 6, 1938. Addition to 468,122. [Class 102 (i)] A pump constructed according to the parent Specification, comprising a number of parallel pistons 1 actuated by a rotary swash-plate 2 of varying angularity, has the pivot 3 by which the swash-plate is secured to the driving shaft 4 located within the circle formed by the points of contact of the pistons with the swash-plate. The swash-plate is given its angular position by means of a spring 6 and a central plunger 5, this angularity being reduced by the reaction of the pistons when the load on the pump exceeds a pre-determined value. Passages 7 in the plunger 5 connect the interior of the hollow driving shaft 4 with the body 8 of the pump and act as a dash pot to reduce vibrations when a small number of cylinders is used.
Patent GB-146913-A (GB)
Title: Improvements in and relating to lubricating devices for internal combustion engines
IPC: F02B57/08
Filed: 1920-07-06
Abstract: 146,913. Siemens & Halske Akt.-Ges. Dec. 9, 1914, [Convention date]. Force-feed and centrifugal-action lubricating.- In internal-combustion engines with revolving cylinders, oil supplied to the parts in the crank case, cylinders, and valve-mechanism outside the cam case is not collected, but oil supplied to the gear and cam cases is circulated through these parts. Pumps 11, 12, 13 are driven by wormgear 9 and cranks 10 from a fixed gear-wheel 6, intermediate between a wheel 5 fixed to the casing, and a wheel 7 fixed to the shaft, rotating in opposite directions. A pipe 14 supplies lubricant from a container to the pumps 12, 13. The pump 13 delivers oil by pipes 15, 17 and annular space 16 to the crank-pins 1, connecting-rod pins 2, gudgeon pins 3, and pistons 4. The pump 12 delivers oil by pipe 18 freely into the gear casing, whence it flows back to the pump 11, being then delivered back to the container. In its circulation it lubricates the wheels 5, 6 and the bearing of wheel 6 and the parts in the cam case 19. Part penetrates by centrifugal-action along passages in the valve-operating levers and joints. The pump 11 may be dispensed with, oil flowing from the cam and gear cases to a space 21, Fig. 2, being arranged to be drawn by suction of the pump through valve 23 into space 24, and forced on the reverse stroke through valve 25 into space 26, to which is connected the pipe 27 from the container.
Patent GB-516472-A (GB)
Title: Improvements in draught excluding means for doors and windows
IPC: B60J10/00
Filed: 1938-06-25
Abstract: 516,472. Doors; windows. BRIGHT, T. J. R. June 25, 1938, No. 18871. [Class 20 (iii)] A draught-excluding means, particularly for motor-car doors, windows and the like, comprises a strip of resilient material which is formed in cross - section to provide a substantially flat portion a for attachment purposes and an effective draught-excluding portion b of incomplete - tubular or channel form having a free edge turned so as to overhang the flat portion a, and an outer covering c of flexible material is provided on the strip so as to extend over the said free edge and into the interior of the portion b. The strip is shown in Fig. 2 as applied to the box-pillar d of a vehicle door, the flat portion a of the strip being clamped between a trimming strip f and a plate or flange e which extends from the pillar into the effective portion b of the resilient strip; alternatively, the pillar may be shaped to provide a deep recess to receive the portion b of the strip. The strip shown in Fig. 6 is formed with the portion b of a flat convex shape. The strip may be made of rubber or the like, or of resilient sheet-metal which is bent or rolled to the desired shape, and in this case, the strip may be provided with a plurality of tranverse parallel slits disposed over the the portion b. The strip shown in Fig. 11 is consructed from resilent wire i which is first bent into a wavy or zig-zag form and then shaped to provide the attachment and effective portions a<2>. b<2>; it is then covered or embedded in fabric or other flexible material c. The strip shown in Fig. 13 is reinforced over the back of the flat portion a with a strip m of sheet metal or canvas; alternatively, the strip m may be embedded in the portion a or shaped to a narrow channel form so as to enclose such portion. The strip shown in Fig. 16 comprises a flat portion a<3> in the form of a metal strip and a tubular portion b' of india-rubber, these parts being connected together and enclosed in fabric c; one edge a<4> of the strip a' may be shaped to provide a channel a<5> for the reception of one edge of the portion b<3>, and the outer edge a<6> of this strip is turned on itself to provide an anchorage for the fabric c. The wall of the rubber strip shown in Fig. 17 is locally thickened at the junction between the portions a, b. The flat portion a of the strip may be slit transversely at intervals to facilitate attachment of the strip around corners and curves.
Patent GB-118767-A (GB)
Title: Improvements in or relating to Carriers for Spare Wheels or Rims of Motor-vehicles.
Inventor: THOMAS WILLIAM PARKER
IPC: B62D43/02
Filed: 1917-12-21
Abstract: 118,767. Thomas, W. P. Dec. 21, 1917. Stands and brackets for mounting and securing reserve tyres and wheels on vehicles.-In means for carrying spare wheels or rims on motorvehicles wherein one or more arms are fitted with pairs of jaws for gripping the rim without touching the tyre, the gripping movement of the jaws is effected by a screw-threaded pin D which emgages with the support A and with the front jaw C<3> in such a manner that this jaw is driven towards the support but does not turn with the pin as the pin is screwed home. As shown, the pin engages with the inner jaw C, which is mounted upon a vertical pin C<1>, the arrangement being such that in the case of a rim or of a wheel with conveniently spaced spokes the pin D and the jaws can be swung round to a position at rightangles to the plane of the rim or wheel, ready for the tightening of the jaws upon the rim by operating the handle D<3>. Two supports A or a single branched support may be used, and they may be secured to the running-board B or beneath the vehicle body. According to the Provisional Specification, the pin D may screw into the arm or support.
Patent GB-820616-A (GB)
Title: Improvements in or relating to electric cooking hotplates
Inventor: OLDHAMS ARTHUR STANLEY
IPC: F24C15/10
Filed: 1955-07-01
Abstract: 820,616. Electric hotplates. JACKSON ELECTRIC STOVE CO. Ltd. July 2, 1956 [July 1, 1955], No. 19054/55. Class 39(3) [Also in Group XXXVII] A removable electric hotplate unit of the type attached to a carrier extending diametrically and terminating at its outer end in a head portion lying beyond the periphery of the plate has a switch disposed in the head portion, the switch being operable by a thermostatic member in thermal association with the heater element so as to open the heater circuit at a pre-determined temperature. As shown, a hotplate a comprises a head portion q on the lower face of which are mounted supply pins i and j, an earthing pin k and, between the pins, a switch having two contacts e, f, e being connected by means of a terminal h and a lead m to one end of the heater element and f being connected to the pin i, the other end of the element being connected to the pin j. The switch operating member is connected to the tube c of a thermostatic bulb b which responds to the hotplate temperature and acts on the switch to open the heater circuit at a predetermined maximum temperature, The thermostatic member may be of the differential expansion type (Fig. 2, not shown) or of the thermo-couple type, and a strip of heat conductive metal may be provided between the heater element and the thermostatic member.
Patent GB-531266-A (GB)
Title: Improvements in or relating to electric condensers and methods of making same
IPC: H01G4/30
Filed: 1939-06-30
Abstract: 531,266. Electric condensers; coating surfaces. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 30, 1939, No. 19075. Convention date, June 30, 1938. Drawings to Specification. [Class 95] [Also in Group XXXVI] A method of making an electric condenser comprises coating metal electrodes with a relatively slippery or lubricating metallic substance, applying polymerizable material to the coated metal electrodes, and causing said material to polymerize. Improved bonding of the polymerizable material to the electrode, is thereby obtained. Specified lubricating metals are solder, Babbitt metal and Wood's alloy, and specified polymerizable materials are styrol, cumarone and indene. In an example, brass electrodes are coated with a solder composed of equal parts of lead and tin, liquid styrol, which may be diluted with ethyl acetate, is then applied, and the coated electrodes are then stacked and subjected to a temperature of 110‹ C. for 1¢ hours to polymerize the styrol. The Specification as open to inspection under Sect. 91 is not confined to the making of electric condensers, but covers the coating of metal surfaces generally by the above method. This subject-matter does not appear in the Specification as accepted.
Patent GB-917194-A (GB)
Title: Improvements in or relating to negative feedback transistor amplifiers
IPC: H03F3/21
Filed: 1961-05-26
Abstract: 917,194. Transistor amplifier circuits. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 26, 1961 [May 30, 1960], No. 19093/61. Class 40 (6). [Also in Group XXXIX] The parallel connected transistor of the output stage of an amplifier move particularly for a telephone repeater, have a common emitter resistor across which a voltage is applied proportional to the voltage across the load so that feedback applied by this resistor to the output stage and from this resistor to an earlier stage is proportional both to the current and the voltage in the load. A telephone line connected at terminals 1 is coupled through a choke 2 and a filter 3 to the input of a common emitter stage 4. This is D.C. coupled to a second stage 5 feeding an output stage comprising two transistors 9, 10 in parallel having the primary winding of output transformer 11 connected to their collectors. Feedback to a common emitter resistor 7 is provided from a tertiary winding through a resistor 19 whereby negative feed back is provided around the output stage. A further feedback circuit through resistor 8 provides both current and voltage feedback to the input stage. Network 3 and negative feedback network 13 equalize the attenuation of the cable, the latter network having a high impedance compared with the emitter impedance of transistor 4 so that its frequency characteristic has no effect on the feedback from the output stage. D.C. stabilization is effected by the main feedback path, by feedback to the first stage base from the second stage emitter resistor 17 and by the provision of individual output stage emitter resistors 14 and 15.
Patent GB-440438-A (GB)
Title: Multifocal lenses
IPC: G02C7/06
Filed: 1934-06-29
Abstract: 440,438. Spectacle lenses. CULVER, E., 42, Coolhurst Road, Crouch End, and EMERSON, S. A., 24, Wentworth Park, Finchley, both in London. June 29, 1934, No. 19296. [Class 97 (i)] Multifocal lenses are made by securing a series of inserts in a major lens which overlap or overlie each other and are of glass having an index of refraction greater than that of the glass of the major portion, at least one of the inserts being of a composite construction and having a part formed of glass of the same index as the major portion. For example, a lens blank 1 is provided with a countersink 4 in which is fused a button 5. This button is formed by fusing a piece 6 of glass of the same refractive index as the blank 1 to a piece 7 of glass of higher index. A second countersink 10 is now ground in the lens and the button 5 and a second composite button is fused therein. The lens is then ground and the lower index portions of the buttons merge into the glass of the main lens. A lens 1 with two additional fields 2 and 3 is thus provided. One of the buttons used can be plain if desired. Buttons composed of portions of lower index glass fused on both sides of a portion of higher index glass may be used. In an alternative construction, the smaller buttons may be fused into countersinks in the larger and then the whole fused into a single countersink in the main lens. A quadrifocal lens is prepared by using three buttons. The higher index portion of the buttons in this construction are preferably of the same refractive index in order to avoid the formation of additional fields in the overlapping areas. Specifications 255,941, [Class 97 (i)], 346,866, and 435,109 are referred to.
Patent GB-364072-A (GB)
Title: Improvements in containers of paper, cardboard or the like material
IPC: B65D3/14
Filed: 1930-06-25
Abstract: 364,072. Paper &c. containers. LEIBFARTH, R., Metzingen, W³rtemberg, Germany. June 25, 1930, No. 19311. Convention date, June 25, 1929. Void [Published under Sect. 91 of the Acts]. [Class 66.] One or both ends of a paper, cardboard, or like container are stamped or pressed inwardly at c to prevent sagging due to the weight of the contents.
Patent GB-381544-A (GB)
Title: Improvements in or relating to television scanning apparatus
IPC: H04N3/04
Filed: 1931-07-04
Abstract: 381,544. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, DOWSETT, H. M., 47, Drayton Gardens, Winchmore Hill, both in London, PLAISTOWE, D. L., 21, Oakleigh Park Drive, Leigh-on-Sea, and LEVIN, N., 61, Albert Street, Regents Park, London. July 4, 1931, No. 19338. [Class 40 (iii).] In order to permit the use in a television receiver of a neon lamp having a cathode of a square or other shape different from that (generally rectangular) of the picture scanned at the transmitter, or to produce an enlarged image at the receiver without increasing the size of the scanning disc, the apertures in the scanning disc or drum are made rectangular with their longer dimension radial or at rightangles to the direction of scanning, while the resultant distortion, i.e. the elongation of the image in the radial direction, is compensated by optical means, such as a cylindrical or sphere-cylindrical lens, thereby restoring to the image as viewed the original shape of the pictu e. In Fig. 3 is shown diagrammatically a receiving arrangement for a transmitted picture originally of rectangular shape with its longer dimension vertical, and which has been scanned at the transmitter by a Nipkow disc with square apertures. The rectangle PA represents in the plane of the receiver Nipkow disc (not shown) the distorted area scanned by the elongated apertures such as A, NTC representing a rectangular neon tube cathode. The compensation afforded by the cylindrical viewing lens CL is sufficient to give to the virtual image A<1> of the aperture A a square shape as employed at the transmitter, and also to give to the virtual image VI of the rectangle PA the rectangular shape of the original picture proportionately enlarged. A receiving arrangement in which the picture is projected upon a screen 5 is illustrated in Fig. 4. the light from the neon lamp after passing through the rectangular apertures 1 of the disc 2 being projected by a sphere-cylindrical lens system 3 as square elementary screens upon the screen. Such an arrangement may also be used at the transmitter for scanning with a disc having elongated rectangular apertures. If, in addition to elongating the apertures, their width is reduced proportionately to pass the same amount of light as square apertures, the number of apertures in the disc may be increased and a finer scanning be effected, the reduced height of picture again being compensated by the optical means.
Patent GB-660183-A (GB)
Title: Improvements relating to tools for slitting or scoring sheet material
IPC: B26D7/26
Filed: 1949-07-22
Abstract: 660,183. Rotary cutting-discs. EVERY, C. E. (Canada Illinois Tools, Ltd.). July 22, 1949, No. 19396/49. Class 31 (i). A rotary tool for slitting or scoring sheet material has an annular body 30 suitable for mounting on an arbor 10 and a cutting or scoring portion 48 divided into segments and detachably secured to the body. The segments are held on the body 30 by a collar 56 and a threaded retaining ring 64, relative rotation. between the segments, the collar and the body being prevented by pins 72, 74.