baber/WOPTO huggingface dataset:
Patent GB-277129-A (GB)
Title: Improvements in and relating to the manufacture of carbon granules for telephone transmitters
IPC: C01B31/00
Filed: 1926-06-17
Abstract: 277,129. Barralet, r. O. June 17, 1926. Microphones and variable resistance transmitters. - Carbon granules for telephone transmitters are prepared by treating furfurol, sugar, or other pure hydrocarbon derivative with a carbonizing agent and subjecting the carbon obtained to a heat treatment yielding a dense carbon having the properties required. In the example given, furfurol is decomposed by addition of 1-2 per cent of concentrated sulphuric acid and heated gradually up to 200‹ C., at which temperature it is kept for about 12 hours. The gelatinous mass produced is slowly heated up to 200‹ C. and then more rapidly to 1000‹ C, in a closed furnace. After about 8 hours a hard carbon having a bright conchoidal fracture is obtained and by crushing and grading may be converted into granules. The hardness and density of the carbon may be increased by reducing the amount of acid used and keeping the acid-furfurol mixture at a lower temperature. for a longer period and under reduced pressure. The final heat treatment may also be carried out under pressure in an autoclave or in nitrogen, hydrogen, or other suitable gas, and may be varied in range and duration according to the product desired. The Provisional Specification describes the use of cellulose as a starting material.
Patent GB-568448-A (GB)
Title: Improvements relating to the hermetic sealing of metal into vitreous material
IPC: H01J5/42
Filed: 1943-09-17
Abstract: 568,448. Uniting metal to vitreous material by heat. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., and ALDING- TON, J. N. Sept. 17, 1943, No. 15319. [Class 36] A metal - to - quartz seal consists of a thin metallic cylinder intimately surrounding and directly united at one end to an electric conductor and enclosed by a quartz tube which is hermetically collapsed by heat upon it. The cylinder 5, Fig. 1, is formed from the conductor 1 or welded to it at one end 6 and the quartz tube is united to the cylinder at least at its other end 7. The conductor is wrapped with thin metal tape or wire 8 such as molybdenum to prevent the collapsed quartz from adhering to the conductor, or the conductor can be highly polished at these parts. The cylinder 5 may be produced by swaging from an enlargement of the conductor or it may consist of a solid drawn tube or of sheet or foil bent into tubular form with a welded seam. In a modification, Fig. 3, the cylinder consists of a cup 9 and the conductor of two parts 10, 11 welded to the interior and exterior respectively of the base of the cup. Specification 561,281 is referred to.
Patent GB-335627-A (GB)
Title: Improvements in or relating to switch lamp holders for incandescent electric lamps
IPC: H01R33/955
Filed: 1929-08-21
Abstract: 335,627. Mugeli, A., and Lomax, R. Aug. 21, 1929. Holders. - In a holder having a slidable switch-bar 19 provided with loose connecting-pieces 21, which in one position of the bar, connect terminal members 25 to lamp plungers 24, the connections between the plungers and the connecting-pieces are made by means of steel or other metal balls 26 seated loosely on plunger springs 28. The bar is yieldingly retained in the on " and " off " positions by the balls which engage in recesses 20, 23 formed in the bar and in the pieces 21 respectively. The springs 28 may be of such length that they do not act on the balls until displaced by the plungers 24 upon insertion of a lamp. The holder may be modified for screwing to a surface or for mounting on a pedestal.
Patent GB-866650-A (GB)
Title: Automatic nipper temple for weaving looms
Filed: 1959-05-05
Abstract: 866,650. Temples; weft cutters. MASOLO, C. May 5, 1959 [May 5, 1958], No. 15451/59. Class 142(2) A temple consists of a fixed jaw 7 and a pivoted jaw 14 urged together to grip the fabric by a spring 24. During beat-up, the slay displaces a lever 28 pivoted at 29, the motion being transmitted by gear teeth 27 to a lever 16 pivoted at 15 on the fixed jaw; links 19 carry a roller 12 which depresses the movable jaw, the amount of jaw opening being adjustable by altering the angle at which the links 19 are clamped on the lever 16. A weft cutter consisting of a blade having a notched cutting edge sliding between two similar fixed blades may be mounted on the side of the fixed jaw; the moving blade is actuated by a lever having a pin and slot connection with the lever 16.
Patent GB-709552-A (GB)
Title: Improvements in or relating to the manufacture of beryllium
Inventor: SCHOFIELD THOMAS HUGH
IPC: C22B35/00
Filed: 1947-06-12
Abstract: Beryllium is produced by heating beryllium flouride with a mixture of calcium and magnesium, in which the calcium constitutes 20-80 per cent. of the mixture, and then raising the temperature above the melting point of beryllium and forming a slag of calcium and magnesium fluorides.  The slag formed has a melting point below that of either of the constituent fluorides. The calcium and magnesium may be used as an alloy and the preferred proportions of these metals however used are 48-68 per cent. of calcium and 52-32 per cent. of magnesium.  The process may be carried out by adding calcium and magnesium mixture and beryllium fluoride in alternate layers to a heated crucible and, when the reaction is completed, increasing the temperature to above the melting point of beryllium.
Patent GB-593877-A (GB)
Title: Improvements in or relating to multi-nozzle burners
IPC: F23D14/04
Filed: 1945-06-19
Abstract: 593,877. Blowpipe burners. BRITISH OXYGEN CO., Ltd., and GODFREY, R. C. June 19, 1945, No. 15515. [Class 75 (i)] A multi-nozzle burner comprises a distribution head 10 formed with a laterally extending bore 11 and with transverse passages 23 to receive a number of nozzle elements 15, each element 15 having an inlet nipple 16 which communicates with the bore 11 and is locked in position by means bearing against the opposite surface to that to which the nozzles are to be attached. The nipple 16 may have a screw-threaded extension 24 engaged by a nut 25, and gaskets 26, 28 may be provided to ensure gas-tight joints between the nozzle element and the distribution head. The oxyacetylene mixture or the combustion fuel may be supplied through the bore 11 and ducts 17, 18 in the nipple 16 to a primary distribution chamber 19 communicating through ducts 20 with a secondary distributing chamber 21 provided with discharge ports 22. The distribution head may have flanges 29 overlapping the nozzle elements to keep them accurately aligned, and the nozzle elements may be fitted with studs 30 of wear- and heat-resisting metal. Both the nozzle elements and the distribution head may be made of copper, a copper alloy or a ferrous alloy.
Patent GB-155961-A (GB)
IPC: B60J1/04
Abstract: 155,961. Godwin, H. Nov. 3, 1919. Pivoting-adjustments for the wind-screws of motor-cars. In a joint of the type wherein a split inner member or sleeve is expanded within the interior of an outer cylindrical member, so as to grip it by friction, through the agency of a conical portion of a screw pin manually operated from without, this pin is engaged with a tapped hole in a central bolt or rod passing axially through the split sleeve. The wind-screen 3 is carried by a socket i a tubular member 2 adapted to pivot around the axial rod 1. At the point where the locking adjustment is required, the tubular member is cut away, and there is inserted a collar 4, firmly secured to the ends of the tubes and slotted for an are 13 of about 90‹ to allow the windscreen to be moved over a similar range without being checked by the locking-cone 12 of the screw pin with external knob 7, and screwed part 7<1> engaging the tapped hole in the axial rod. The collar is large enough to contain the split sleeve 5, of which the ends are recessed to abut against the cone, and in which there is a cylindrical hole 9 opposite for the plain tail of the screw pin. The lock-joint is slightly modified when the screen is hinged to side standards.
Patent GB-259918-A (GB)
Title: Process for the manufacture of artificial silk
IPC: D01F2/00
Filed: 1926-06-21
Abstract: 259,918. Umbach, J. Oct. 19, 1925, [Convention date].Void [Published under Sect. 91 of the Acts]. Cellulose xanthates, processes for making filaments from.-Cotton rags are used as the starting material in the manufacture of artificial silk according to the viscose process. The rags are freed from grease by means of alkali, washed, if desired bleached, and then either mercerized in the form of rags, or after they had been disintegrated in a hollander and the resulting pulp made up into paper, board, or flakes.
Patent GB-822660-A (GB)
Title: Magnetic switching system
Inventor: LAWRENCE JOSEPH DOUGLAS
IPC: H03K17/81
Filed: 1957-05-17
Abstract: 822,660. Magnetic amplifiers. SPERRY RAND CORPORATION. May 17, 1957, No. 15710/57. Class 40 (9). A group of cores 00-11 having rectangular hysteresis characteristics are magnetized from a source PP-1 of alternating pulses, the positive pulses being applied to bias windings 24-26 on all but one of the cores and also by way of switches 12, 13 to none, one or the other, or both of two input circuits comprising winding groups 16-19 and 20-23, while the negative pulses are applied to restoring windings 37-40 which drive all the cores to saturation in the same sense. Each core also has an output winding 27-30 which is connected to an individual output terminal 31-34, the output circuits each including a biased rectifier 35, 36 which limits the rate of change of flux when cores are changed from one saturated state to the other. Rectifiers 41 in the input circuits are also biased by a negative potential 14. In operation, with both switches open, all the cores except core 00 have their initial saturated state as established by the restoring windings reversed by positive pulses in the bias windings, and outputs are induced in the respective output windings 28-30. Again, with switch 13 closed, the fluxes in core 01 alone are ineffective so that only this core remains in its initial saturated state and produces no output. Similarly, cores 10 and 11 remain in the initial state when switch 12 or switches 12 and 13 are respectively closed. In a modification, Fig. 3, each output winding 45 and its load 44 is connected by way of rectifier 46 to an alternating pulse source PP-2 which has an antiphase relationship to PP-1. The positive half cycles of PP-2 magnetize the cores in the same sense and time position as the PP-1 pulses in the restoring windings 37-40, so that only that core which is left in its initial remanent state by the input circuits permits current to flow to a load. It is stated that this arrangement provides amplification and enables the restoring windings to be omitted.
Patent GB-741003-A (GB)
Title: Improvements in or relating to titanium base alloys
IPC: C22C14/00
Filed: 1953-06-08
Abstract: A titanium base alloy has the following composition: .Sn,.0.5-31.per cent .Al,.0.5-10.per cent .Ti and impurities the balance...  The Provisional Specification describes also alloys in which the Sn content is 0.5-22 per cent and the Al content 0.5-12 per cent.
Patent GB-825679-A (GB)
Title: Improved method and apparatus for moulding bayonet socket connectors and the like
Inventor: JACQUES DAVID
IPC: H01R43/18
Filed: 1957-05-17
Abstract: 825,679. Moulding slotted cylinders. METROPOLITAN PLASTICS Ltd. March 21, 1958 [May 17, 1957], No. 15766/57. Class 87(2). Articles having cylindrical hollow ends formed with one or more bayonet slots are moulded in a cavity 9 around the core 12 in mould 5, the longitudinal leg of the bayonet slot (or of each bayonet slot) being formed by a longitudinal rib 13 fixed within the cavity at the base 10 and lying against, but separate from, the core 12, and the circumferential branch of the slot by the projection 16 on the core lying against the side of the longitudinal rib at its top. The moulded article, e.g. a plastic electrical bayonet socket connector, is ejected by axially moving the core 12 through the base 10 to project out of the mould, the article being slid off the longitudinal rib 16, partially rotated to bring the end of the longitudinal leg of the slot against the projection 16, and then axially withdrawn. If a shrouded bayonet slot is required, the rib 13 is fixed to the base 10 of the cavity and spaced from the wall thereof and the projection 16 is equally spaced from this wall.
Patent GB-892390-A (GB)
Title: An electrical pulse selector circuit and a pattern detector using such circuits
IPC: H03K21/00
Filed: 1959-05-08
Abstract: 892,390. Pulse discriminator circuits. STANDARD TELEPHONES & CABLES Ltd. May 8, 1959 [May 14, 1958], No. 15880/59. Class 40(6). [Also in Group XL(b)] The elements of a pattern are detected by scanning the pattern so as to produce pulses which vary in amplitude in accordance with the energy content of the scanning device, the pulses are then converted into a signal having amplitude peaks corresponding to the element definition of the pattern, the signal then being differentiated so as to emphasise the definition of the elements with respect to unwanted background signals. Figs. 1-5 show the application to recognising the elements of a dotted raster, Figs. 6, which consists of a total possible number of 30 rows and 15 columns of dots divided into 3 sections the first row of each section being designated an index row. In each of the remaining 4 columns in each section dots may be present or absent according to a code. Fig. 1 shows a portion of the raster in which dots 111, 113 represent a portion of an index row and in which there is no background smudge. Fig. 2 shows the corresponding portion of a raster which is likely to be met with in practice. As shown in Fig. 4, the raster is scanned by a video scanner 433, for example a flying spot scanner, the video output on line 434 is gated via AND gate 412 to give negative pulses the amplitude of which depend upon the blackness of the scanning lines, Figs. 2 and 3. The pulses are inverted by unit 416 to give the pulse train, Fig. 3a, this is then passed to a pulse peak detector 417 which produces an output, Fig. 3b, which is seen to have a non-uniform slope for dots and a uniform slope for the grey areas between dots. This signal is passed by a cathode follower stage 418 to differentiating circuit 419 to produce the pulse train shown in Fig. 3c. The signal of Fig. 3c is amplified by amplifier 420 and passed to monostable multivibrator 421 and via inverter 422 to gate 426 which is only opened to pass the signal from the inverter after the pulse from amplifier 420 has triggered devices 421, 424, 425, i.e. after a predetermined delay, thus for example the first pulse 316, Fig. 3c, arrives at gate 426 before the gate has been opened and is not passed to the output. When the monostable multivibrator 425 resets, the bi-stable multivibrator 424 will not re-trigger until it has itself been triggered by an end of gate pulse which occurs during the interval 320, Fig 3c. Stage 425 is designed to open gate 426 only for a period long enough to pass one pulse the output from gate 426 may be passed to a conventional counter stage. The apparatus may be modified to count blood cells, a blood smear then being arranged on a plate viewed by a microscope in conjunction with a video scanner such as a cathode ray tube.
Patent GB-1185894-A (GB)
Title: Material for Forming Bags with Strip Fastenings
IPC: B65D33/25
Filed: 1967-04-06
Abstract: 1,185,894. Strip fastenings. MINIGRIP EUROPE A.S. 6 April, 1967 [6 April, 1966], No. 15931/67. Heading E2S. A strip fastening formed on a plastics sheet to be made into a bag comprises a male rib 41 in the form of a head on a stem and a grooved female member 42, the part 45 of the female member 42 to be on the bag side of the fastening being thicker than the opposed part 46 so that the fastening can be released more readily by pulling on the end flanges 18, 19 of the sheet than by separation of those parts of the sheet forming the sides of the bag itself. In the arrangement shown, the head of the male rib 41 extends nearer to the sheet on the side of the bag than on the side of the opening flanges 18, 19. Moreover, the part 45 of the female member may approach nearer to the stem of the male rib 41 than the opposed part 46. In another arrangement, the head of the male rib is inclined to the sheet and the female member is correspondingly shaped. One of the flanges 18, 19 may have a spacing bead.
Patent GB-1136948-A (GB)
Title: Improvements in or relating to agricultural vehicles
IPC: A01D90/12
Filed: 1966-01-26
Abstract: 1,136,948. Agricultural pick-up trailer. TEXAS INDUSTRIES Inc. 26 Jan., 1966 [11 Feb., 1965]. No. 16105/68. Divided out of 1,136,947. Heading B8E. [Also in Division A1] The subject matter is all disclosed in the parent Specification 1,136,947, but the claims relate to a different aspect of the draw bar arrangement. Reference has been directed by the Comptroller to Specification 1,094,402.
Patent GB-221033-A (GB)
Title: Improvements in or relating to loose leaf binders
IPC: B42F13/00
Filed: 1923-06-21
Abstract: 221,033. Mann, A. June 21, 1923. Post files; locking-followers. -A telescopic post for a looseleaf binder comprises an interior element e rotatably attached to one clamping-bar a<1>, and an exterior element b fixed on the other bar a, the element e carrying on its tapered portion e' a split nut f having a conical bore and a cylindrical or prismatic exterior. On rotation of the element e by a key placed in a recess g, the nut f is expanded into contact with the inside of the element b, and the members of the post are locked together.
Patent GB-639037-A (GB)
Title: Combination propelling and pick-up handles for vacuum cleaners
IPC: A47L9/32
Filed: 1948-06-16
Abstract: 639,037. Vacuum cleaner handles. FAIRWEATHER, W. C. (Singer Manufacturing Co.). June 16, 1948, No. 16202. [Class 61 (i)] [Also in Group XXVIII] A handle assembly for a vacuum cleaner comprises a wide handle portion, a pick-up handle secured to the wide handle portion, a relatively narrow equipment enclosing hand-grip and a pair of converging tubes connecting said wide portion and said narrow hand grip. As shown, a pair of longitudinal tubular members 31 ; 32, upwardly converging towards a hand grip 33, are clamped at their lower ends to an inverted box-like casing 34 which is in turn pivotally mounted by means of trunnion arms 26, 27, to the chassis 11 of the cleaner. The casing is adapted to receive a cable reel 42 and also supports in a transverse position a handle 29 by means of which the cleaner may be located in any one of several positions by means of a latch, not shown, which is controlled by a trigger 57 on the hand grip 33. The electric supply cable 46 passes into the handle through a boss 47 and by way of a cable control apparatus in the hand grip passes through the tube 31 to the cable reel 42. Specification 639,036 is referred to.
Patent GB-1261392-A (GB)
Title: Electric power conversion circuit
Inventor: STRATTON JERRY LYLE
IPC: H02M5/293
Filed: 1969-03-27
Abstract: 1,261,392. Static converter systems. GENERAL ELECTRIC CO. 27 March, 1969 [16 April, 1968], No. 16206/69. Heading H2F. In a power supply unit an h.f. transformer, e.g. with ferrite core, is used because of its small dimensions compared with a normal mains frequency one for the same power output. Thus voltage at the mains frequency is converted to a higher frequency, transformed (e.g. stepped up), converted back to the mains frequency and applied to a load. In Fig. 1a solid state switches 13, 15, 16, 17 are controlled by a unit 24 to conduct in pairs alternately the switching rate being at the higher frequency (e.g. range 1kHz to 50kHz). Thus 15, 17 conduct while 13, 16 are off and vice versa. The input and output switching circuits both function as inverters. Fig. 2 illustrates the waveforms which obtain when a 1 : 1 ratio transformer is used, the voltage applied to the load being seen to correspond in polarity phase and magnitude to the input voltage. The output voltage magnitude will of course depend upon the turns ratio of the tran - former used. The solid state switches may be bidirectional conducting devices such as diacs or triacs or each may be a pair of inverse-parallel connected SCR's or transistors or gate turn-off SCR's. Instead of the bi-phase switching arrangement shown, half bridge or full bridge arrangements may be used. Conventional gating and commutation circuits may be used and are not described. Overload protection.-When the load current is too high the switches 13, 15 are rendered non-conductive while 16, 17 are kept operating to dissipate reactive current, after which they turn off.
Patent GB-238346-A (GB)
Title: Improvements in or connected with capstans
IPC: B66D1/74
Filed: 1924-07-05
Abstract: 238,346. Paterson, C. R. July 5, 1924. Capstans; winches; driving-gear. - In capstans of the kind driven by gearing arranged above the head A, a transmission shaft E extends axially through the bore of the vertical standard B and is driven at the lower end through bevel gears 3, 4 by a shaft F which is driven by an engine separate from the capstan. Bevel gears 5, 6 connect the shaft E to a shaft G which carries a pinion 7 and winch drum D. The pinion 7 can be moved longitudinally hv a bar 11 to mesh with a gear 8 on a shaft K which is connected bv a bevel gear 9 to a rack 10 on the capstan. In a modification, the gears 7, 8 are always engaged and clutches are provided for connecting the shaft E with the capstan and/or the drum D.
Patent GB-1011998-A (GB)
Title: Alkyd resins
Inventor: JENKINS VICTOR FREDERICK
IPC: C08G63/676
Filed: 1963-04-24
Abstract: Alkyd resins having shorter drying times are made by reacting (a) the alcoholysis product of a drying oil with a polyhydric alcohol, (b) a dicarboxylic acid or anhydride, and (c) a furoic acid of formula <FORM:1011998/C3/1> where R1, R2 and R3 are hydrogen atoms, methyl groups or ethyl groups; the molar amount of furoic acid employed constituting not less than 5% of the total molar amount of furoic acid and fatty acid of the drying oil. Specified reactants are: for (a) the reaction product of soyabean oil, linseed oil or tung oil with glycerol, tetramethylolcyclohexanol, mannitol, sorbitol, pentaerythritol, polypentaerythritol, trimethylol ethane and trimethylol propane, for (b) adipic, sebacic, succinic, fumaric, maleic, phthalic and isophthalic acids.  The resins are made into a coating composition by dissolving them in a solvent (e.g. white spirit) and, possibly, adding a pigment or a drier (e.g. cobalt naphthenate).
Patent GB-1466796-A (GB)
Title: High-pressure valve
IPC: F16K31/363
Filed: 1974-04-11
Abstract: 1466796 Valves GENERAL ELECTRIC CO 11 April 1974 [26 April 1973] 16279/74 Heading F2V In a valve for connecting a pressure sensitive device to either a pressure source or a dump tank a first valve member 21 co-operates with a seat 31 on a second valve member 35 to control the communication between the source and the device and the second valve member 35 cooperates with a seat 39 to control communication between the device and dump tank. A piston 17 actuates both valve members, the second via lost-motion, and is moved by the pressure in chamber A which is either connected to the source or to a drain 59 via a solenoidoperated valve 55. The device is connected to the dump tank before the valve member 35 unseats and before the valve member 21 seats by passages 71, 75 and chamber E.