baber/WOPTO huggingface dataset:
Patent GB-617184-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03F1/36
Filed: 1946-04-30
Abstract: 617,184. Valve amplifying circuits. WHITE, E. L. C., and ELBOURN, R. W. April 30, 1946, No. 13010. [Class 40 (vi)] In a thermionic valve circuit employing a valve having one or more electrodes between the cathode or anode which may draw current, the valve having an impedance in both anode and cathode circuits, means are provided to decouple these one or more electrodes which may draw current to the cathode so that the cathode load current variation is maintained more nearly a constant fraction of the anode current variation, the impedance of the decoupling path being low compared with the path to the cathode via the impedance in the cathode circuit. Fig. 1 shows a screen-grid valve 1 having impedances 6, 7 in its cathode and anode circuits the screen grid being decoupled by condenser 10 and the control grid decoupled via the cathode follower 12 and condenser 16 to the cathode 2, the resistors 9, 13, 15 are of high value compared with resistor 6 and the impedance of condenser 10 is smaller than that of resistor 6 at the lowest frequency required. In a modification, Fig. 2, the signals to be amplified are applied to a pair of valves 17, 18 having a common cathode impedance 19 the anode being coupled to the control grid circuit of the cathode follower stage 12 by a D.C. coupling circuit as described in Specification 530,620. The signal voltage across resistor 6 is amplified in stage 18 and applied as negative feedback to stage 1. The screen and control grids of valve 1 are decoupled to its cathode by neon stabilisers 25, 24, thus enabling a D.C. signal component to be handled. In a further modification, Fig. 3 (not shown), the cathode follower valve is replaced by two valves arranged in a manner similar to that described in Specification 564,250. Valve 1 may be used as a phase-splitter in a push-pull circuit. Specification 475,469 also is referred to.
Patent GB-574272-A (GB)
Title: Improvements in or relating to the manufacture of rubber-like polymers
IPC: C08L91/00
Filed: 1942-09-15
Abstract: 574,272. Rubber substitutes. WALLERSTEINER, K. Sept. 15, 1942, No. 13026. [Class 91] A rubber-like product is prepared from castor oil or decomposition products thereof by heating the oil at pressures below 10mm. of mercury at progressively increasing temperatures, e.g., up to 350‹C., such that decomposition of the ricinoleic or ricinolenic acids take place with evolution of acrolein, steam, and heptaldehyde, and transforming the sol thus formed into a rubbery gel by continued heating with exclusion of air or oxygen. Metallic magnesium or sodium may be employed to accelerate the polymerization, while organic peroxides may be employed to inhibit or retard polymerization. The product is a pale yellow rubber-like solid. According to the Provisional Specification such rubber-like products may also be prepared from acids of 10 to 12 carbon atoms having an unsaturated linkage in the y position.
Patent GB-528969-A (GB)
Title: Improvement in making composite metals
IPC: B32B15/01
Filed: 1939-05-02
Abstract: 528,969. Making composite sheets etc.; rolling. ORR, J. B. May 2, 1939, No. 13064. [Classes 83 (ii) and 83 (iv] In covering sheets 9 &c. with a layer 11 e.g. of stainless steel bv uniting the stainless steel to the other steel by rolling a pack of such adjoining sheets, oxidation of the sheets is prevented and welding is assisted by either including layers of excess amorphous carbon 10 between the sheets or having one sheet of sufficiently high carbon content to act as a reducing agent when the pack is heated and then worked e.g. rolled. The stainless sheets 11 are kept from uniting by a layer of oxide of either red lead, magnesium, chromium or aluminium mixed with water glass or a layer of lime sprayed on. The pack is enclosed by a weld 13 or by molten metal poured round it. The pressure of carbon monoxide formed in the pack prevents entry of oxygen from the air. In Fig. 3 the pack may be exhausted of air or oxygen through a pump connection 16 closed by a tapered pin 15. In making up the pack at least one pair of the sheets is heated to 700 ‹F. sprayed with lime and heated by a sharp gas flame to 1300‹F. so driving off all the water by hydration and forming a coating of calcium carbonate. When the pack is heated above 1800‹F. the CO 2 is expelled and reduced to CO by the excess of carbon present.
Patent GB-1014897-A (GB)
Title: Improvements in or relating to superhigh-pressure mercury vapour discharge lamps
IPC: H01J61/18
Filed: 1964-03-31
Abstract: 1,014,897. Discharge lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. March 31, 1964 [April 3, 1963], No. 13129/64. Heading H1D. A super-high-pressure mercury vapour discharge lamp having quartz walls 1 and solid electrodes 3, 4 spaced apart by a distance exceeding twice the tube inner diameter contains between 5 x 10<SP>-7</SP> and 5 x 10<SP>-5</SP> g. atoms of one of the halogens per c.c. This reduces cracking of the envelope. The lamp is loaded at more than 300 W. per cm.<SP>2</SP> of the inner surface, operates at a pressure in excess of 15 atmospheres, and contains a rare gas at 60 mm. pressure at room temperature. The halide may be introduced into the lamp as a sodium salt, e.g. the chloride, bromide, or iodide. The lamp may have a tungsten cathode 3 and tungsten anode 4 connected through molybdenum fusing strips 5 and 6 to the leads 7 and 8.
Patent GB-868284-A (GB)
Title: New metal complex azomethine dyestuffs
Inventor: HENSEL HANS RUPRECHT
IPC: C09B45/00
Filed: 1958-04-25
Abstract: The invention comprises 1, 1-metal complexes of dyes of formula:- <FORM:0868284/IV(c)/1> where R is an aryl residue and R1 and R11 identical or different phenyl or naphthyl radicals which contain a hydroxy or thiol group in #s-position to the N atom and which may be further substituted, the metal having an atomic number of 24 to 30. The dyes are made by reacting appropriate arylazo-malonodialdehydes with at least one primary phenyl- or naphthyl-amine which contains the necessary hydroxy or thiol group and metallizing the product. Metallization may also be effected at the same time as dye formation. Indicated substituents for R, R1 and R11 are halogen, sulpho, carboxy, sulphonamide and carboxylic acid amide, alkylsulphone, arylsulphone, aryl azo, alkoxy, nitro and acylamino groups.  Copper, nickel, cobalt, iron, zinc and chromium are specified metals.  The dyes colour lacquers, plastics and natural and synthetic fibres, especially wool, silk and synthetic polyamide fibres.  Examples are provided of the preparation of the dyes and their use in dyeing processes, various colours being obtained.
Patent GB-749361-A (GB)
Title: Improvements in the production of turbine and like blades
IPC: B21D53/78
Filed: 1952-05-23
Abstract: 749,361. Grinding turbine &c. blades. JAMESON, J. L. Aug. 24, 1953 [May 23, 1952], No. 13199/52. Class 60 A turbine or like blade 5 is mounted, for rotation about its longitudinal axis, between head 4 and centre 6 carried by a blade support 1 which is movable by a hydraulically operated rod 2 towards and away from,a table 3. A slide 7 carries die blocks 8, 9 respectively complementary to the opposite faces of the blade. In operation, the rod 2 lowers the blade 5 into the position where it is operated on by an abrasive band 10 running between it and the die block 9. As the rod rises at the completion of this operation, the blade holder 4, 6 is turned over to present the other face of the blade 5 and the die holder 7 is traversed to bring the other die block 8 into register with the blade. The rod 2 then again lowers the blade 5. The turning- over of the blade 5 may be effected hydraulically, the head 4 of the blade holder being formed on a vane 11 working in a bore 12 in the support 1, the bore having ports 13, 14 connected to a control valve operated in synchronism with the movement of the rod 2; angular movement of the vane 11 is limited by adjustable stops 15, 16. The movement of the slide 7 can also be effected by hydraulic operation under control of a valve operated in synchronism with the movement of the rod 2. In a modification, Fig. 3, die surfaces 18, 19 are provided on a die block 17 which is turned over by hydraulic means controlled by a valve operated in synchronism with movement of the rod 2. Long blades may be operated on in stages along their length by a band which is narrower than the length of the blade. Specifications 591,890 and 736,075 are referred to.
Patent GB-705158-A (GB)
Title: Improvements in or relating to mattresses
Inventor: BOSTOCK WILLIAM
IPC: A47C27/00
Filed: 1950-05-26
Abstract: 705,158. Mattresses. SLUMBERLAND, Ltd. May 21, 1951 [May 26, 1950], No. 13269/50. Class 52(4) To reduce heat-loss from the body of the user the upper surface of a mattress incorporates a sheet of material impermable, or only slightly permeable to water-vapour which is backed by a layer or pad of heatinsulating material located between the impermeable sheet and the mattress centre. In the preferred arrangement the sheet is constituted by mattress ticking treated with a solution or suspension of polyvinyl chloride. One surface of the mattress may be' left untreated for summer use.
Patent GB-367247-A (GB)
Title: An improved electrical registering or recording device for weighing apparatus
IPC: G01G23/42
Filed: 1931-05-05
Abstract: 367,247. Weighing-apparatus. SIEBERS, J. H. W., 37, Park Vronesteyn, Voorburg, Holland. May 5, 1931, No. 13282. [Class 143.] Permanent records, apparatus for giving. -Weighing- apparatus is provided with an electric recording device in which members whose relative positions correspond to different magnitudes or values of the load or weight, are adapted to be electrically connected, when desired, so as to produce a spark or sparks therebetween and thereby produce on a paper or other chart or sheet a record of the magnitude or value of the load or weight. The spindle of the indicating pointer 1 carries an insulated finger 3 provided with two electrodes 5, 6 which respectively move adjacent to, but out of contact with, a series of fixed electrodes 7 and a corresponding series of continuous rings 8. The electrodes 7 lie on concentric circles, the electrodes of each circle being electrically connected and each circle of electrodes being connected to one of the rings 8. A receptacle 14 is provided for an induction coil, and a slot 17 permits a record chart or paper to be inserted into the spark gap between the electrode 6 and the rings 8. When a record of the weight is to be obtained, a chart is inserted and the operator depresses a pushbutton 8a to close the primary circuit of the induction coil. The secondary circuit then causes a spark to pass across a gap 21 to the finger 3, a second spark to jump the gap between the electrode 5 and the nearest electrode 7, and a third spark to pierce the record chart in the slot 17 thereby producing the record. The record chart may bear a series of graduated concentric circles and radial lines to facilitate the reading, or, if the record chart is blank, a transparent graduated chart or templet may be applied to the blank chart. The operator ensures correct setting of the chart in the slot 17 by bringing marks on the chart into register with orifices in the chart holder. A permanent record of the setting may be obtained by providing the apparatus with a chart-punching or marking device.
Patent GB-586879-A (GB)
Title: Improvement in and relating to dispensing containers
IPC: B65D83/04
Filed: 1944-07-12
Abstract: 586,879. Dispensing containers for capsules. DUELL, E. B. July 12, 1944, No. 13335. Convention date, June 21, 1943. [Class 18] A container for dispensing elongated cylindrical capsules one at a time, comprises a tray 11 having an upstanding wall 15 defining a compartment which will contain at its end only one capsule, the further end 15a of the wall being curved as shown, and the lid having a depending wall 21, 22 so that when the lid is slidden partly open one capsule will be left in the compartment in an accessible position while the other capsules in the compartment are swept back into the body of the container. The part 22 serves as a stop for the lid.
Patent GB-472953-A (GB)
Title: Motor-vehicle change-speed transmissions
IPC: F16H61/02
Filed: 1937-05-11
Abstract: 472,953. Change speed gearing. ALVIS, Ltd., and CLARKE, G. T. SMITH-. May 11, 1937, No. 13347. [Class 80 (ii)] A two-speed gear suitable for a vehicle tail-shaft drive comprises a one-way clutch 8 which picks up a direct drive between the tail-shaft 1 of the gear box (not shown) and an ultimately-driven shaft 3, allowing the vehicle to freewheel on that drive. Planet pinions 7 on a carrier 5 fast on the shaft 1 mesh with an annulus 4 fast on the shaft 3, and with a loose sun-gear 6 to which is splined a magnetic armature disc 9. When the armature 9 is attracted against an electromagnet 12 carried by the annulus 4, the gearing turns solid on direct drive without freewheeling. When the armature 9 is alternatively attracted to a fixed electromagnet 11, the sun 6 is held fast and the annulus 4 and shaft 3 are overdriven with overrunning at the one-way clutch 8, but without freewheeling of the vehicle.
Patent GB-504974-A (GB)
Title: Improvements in or relating to processes for the amelioration of the magnetic properties of metals and alloys, the atoms of which are arranged in a cubic lattice
IPC: C21D8/12
Filed: 1938-05-04
Abstract: 504,974. Heat - treating metals and alloys. SIEMENS & HALSKE AKT.-GES. May 4, 1938, No. 13356. Convention date, May 4, 1937. [Class 72] [Also in Group XXII] Metals or alloys, the atoms of which are arranged in a cubic face-centred lattice, are rendered magnetically anisotropic by rolling several times alternately in two directions in the same plane perpendicular to each other. The material, which is preferably an ironnickel alloy having 30 to 60 per cent of nickel, is heated after rolling to a temperature at which recrystallization but no destruction of the texture occurs, i.e. 600 to 800‹ C.
Patent GB-1423577-A (GB)
Title: Loudspeaking telephone station circuit
IPC: H04M9/10
Filed: 1973-03-20
Abstract: 1423577 Loud-speaking telephones INTERNATIONAL STANDARD ELECTRIC CORP 20 March 1973 [21 March 1972] 13370/73 Heading H4R In a loud-speaking telephone circuit in which the D.C. peak levels in the two paths T, R are compared 60 to switch an amplifier 24 (say) in the high level path to a gain condition and a similar amplifier 34 in the other path to an attenuation condition, the amplified signals T 1 , R 1  are also added to the comparator inputs to increase the threshold necessary to reverse the transmission direction and such additions are independently controllable in the two paths. The choice of input resistors and/or capacitors (150, 152, Fig. 2, not shown) to the comparator or the output resistors (160, 162) which form a 'two-way delay circuit influence the threshold level. The circuit may be biased to the transmit mode in the absence of signals and a lamp lit accordingly. The loud-speaker amplifier 36 is gain controlled 40 by a feedback loop (Fig. 3, not shown) including an op-amp (104) with adjustable volume setting (92) and a transistor (102).
Patent GB-421104-A (GB)
Title: Improvements in or relating to alloy cast iron castings
IPC: C22C37/06
Filed: 1934-05-03
Abstract: Chilled and grey iron castings for heavy purposes, for example rolls, contain 0,25-10 per cent of tungsten, with or without smaller proportions of one or more of the metals chromium, nickel, vanadium, titanium and molybdenum.
Patent GB-134739-A (GB)
IPC: H02K21/10
Abstract: 134,739. Goldestone, M. H., and Farrel, H. O. March 12, 1919. Dynamo-electric machines.-An .armature core for a small magneto, such as those used for. cycle lamps &c. consists of a bar a mounted on the spindle d and provided with two flat end plates e, the whole being so proportioned as just to fit within the circle b formed oy the pole pieces, as shown in Fig. 4. Partition pieces k of channel metal are fitted in place as shown, and the bobbins wound between them and the plates e in the ordinary way. To fix the plates e on the bar a, ridge i, Fig. 9, are formed on the sides of the bar by pressing it through a hole in a metal plate, the hole being rather smaller than the bar. The plates are then assembled on the ends of the bar against the ridges and fixed by an outer ridge j formed by pressing the ends of the bar through a slightly smaller hole, Instead of continuous ridges a number of projections may be formed by making the hole through which the bar is pressed of the same size as the bar, with a number of inward projections on its edges.
Patent GB-1208134-A (GB)
Title: Improvements in or relating to continuous carburising
Inventor: HOLDEN ALFRED HAROLD
IPC: C21D1/74
Filed: 1967-03-22
Abstract: 1,208,134. Continuous carburizing furnaces. GIBBONS BROS. Ltd. 18 March, 1968 [22 March, 1967], No. 13551/67. Heading F4B. [Also in Division C7] In a continuous carburizing furnace comprising a heating chamber 19, a carburizing chamber 20 and a diffusing chamber 21, work to be treated is transferred from the heating chamber 19 to the carburizing chamber 20 through interconnecting door means 45 when the furnace inlet door 34 and the outlet door 61 are both closed. The work is carried on trays which are in turn supported on trackways (see Figs. 3 and 5). Pushers 139, 41, 44, 55 and 60 are provided where shown to advance the work through the furnace. The heating and carburizing chambers are each provided with radiant tube burners and with roof fans (see Figs. 2 and 4). The work, on leaving the diffusing chamber 21 via outlet door 61, thereafter passes through a quench tank 11, a washer 12 and a tempering furnace 13. Energization of the pushers and of the interconnecting door means is controlled by an electrical timing circuit (Fig. 7, not shown) to give the required sequence of operation. In a modification (Fig. 6, not shown), a separate diffusing chamber (70) incorporating heating elements and having a rotary hearth is provided at the downstream end of the carburizing chamber (71).
Patent GB-900653-A (GB)
Title: Improvements in or relating to mechanical brakes and locks
Inventor: NICHOLLS JOHN WILLIAM
IPC: B66F3/30
Filed: 1958-04-29
Abstract: 900,653. Locking-rods. ACCESS EQUIPMENT Ltd. Oct. 30, 1958 [April 29, 1958], No. 13591/58. Class 80 (3). [Also in Groups XXIX and XXX] A friction lock preventing descent of an hydraulic lift-ram 7 comprises friction segments 6 urged radially inwards against the ram 7 by balls or rollers 8 pressed downwards by a spring 10 into wedging engagement between the segments 6 and an internally-coned fixed ring 12 (see right of Figure), the segments 6 having shoulders 13 which contact the balls 8 and release them from wedging engagement (see left of Figure), when the ram 7 is raised or when a hand lever 14 is operated to raise a ring 4 connected by a bonded rubber ring 5 with the segments 6.
Patent GB-528431-A (GB)
Title: Improvements in or relating to chairs or the like
IPC: A47C7/32
Filed: 1939-05-08
Abstract: 528,431. Spring surfaces. EVEREST UPHOLSTERY Ltd., and LITTLEFAIR, J. H. May 8, 1939, No. 13641. [Class 52 (iv)] The ends of tension springs 17 of a seat fit into holes 18 in a rebated or recessed portion 23 of the front rail 10 and are held by a metal rod 20 passing through the end loops of the springs and along a groove 19. The anchorage of the springs is concealed by an angled or flat strip 22. The rear portion of the springs may pass completely through holes in the back rail and be held by a metal rod threaded through the terminal loops. Specification 509,470 is referred to.
Patent GB-295966-A (GB)
Title: Improvements in or relating to filler pieces or socks for boots or shoes
IPC: A43B17/00
Filed: 1927-05-21
Abstract: 295,966. Hilgert, M. May 21. 1927, Socks; connecting uppers to insoles.-A shoe is provided with a detached filler piece 6, Figs. 1, 2, with its upper surface shaped to the sole of the foot and having a smooth lower surface of a length shorter than the inside of the shoe, tapered at its forward extremity 18 more abruptly than the insole, so as to permit the forepart of the filler to slide relatively to the insole without wrinkling or buckling. The filler may be attached to the shoe but the forward section must be free to move. The upper surface of the filler shaped to the human foot has a heel seat 8 cupped longitudinally and transversely. The front part of the filler is raised one side or the other at 12 and compensates for irregularity of tread. Specifications 6367/15, [Class 17 (i), Boots and shoes, Apparatus for making &c.], and 243,072 are referred to.
Patent GB-190110-A (GB)
Title: Improvement in looms for weaving curvilinear webbings
IPC: D03D3/06
Filed: 1922-05-15
Abstract: 190,110. Mills Belt Co., (Assignees of Jennings, V. H.). Dec. 12, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Double andmultiple fabrics; fashioned fabrics; fashioning, weaving to facilitate; cutting-out, weaving to facilitate; slit-up fabrics.-In weaving a fabric adapted to be slit up longitudinally to from a number of curvilinear web sections or webbing for making soft collars &c., the warp threads are fed at different speeds, the rate being fastest at the parts forming the convex or longer edges of the webbings and slowest at the parts forming the concave edges of the webbings. For this purpose, a warp beam 1 comprising sections of tapered form is used. It may be provided with flanges w<1> interposed between the respective sections of the warp supply. The web sections are fed forward by a take-up roll 7 having a tapered section for each web section. The web may be slit up in the loom by cutters 8 on a bar 9, and warp threads may be omitted in the web to form thin places to guide in and facilitate the slitting, but the slitting may be performed after removal of the web from the loom, which is provided with a shuttle or with a weft-inserting needle or rod. The longer edges of the web sections may adjoin as shown, or a long edge of one web section may adjoin the short edge of the adjacent section. The web sections may be woven one, two, or more plies, and may each have a flexible fold line. Specification 189,414 is referred to.
Patent GB-543522-A (GB)
Title: Improvements in electron discharge devices
IPC: H01J25/06
Filed: 1940-08-31
Abstract: 543,522. Electron oscillators. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 31, 1940, No. 13697. Convention date, Aug. 31, 1939. [Class 39 (i)] In a device employing a resonant cavity to produce standing waves which interact with an electron stream within the cavity, shields screen the stream from alternate half-waves. Fig. 1 shows an oscillator comprising a resonant cavity 3 through which an electron beam is projected from a cathode 5. Shields 15 screen the beam from alternate half-waves of the standing waves producing velocity modulation. The resulting oscillations are picked up by a loop 11 and fed back to a grid 7 controlling the stream. As the velocity of the stream decreases as it proceeds the lengths of the shields are correspondingly diminished. The application of the resonator to an amplifier and a demodulator is also described ; in the latter case the screens are of equal length. Fig. 4 shows a magnetron. The resonant cavity 31 is between the magnet poles N, S and the anode 35 surrounds the cathode 37 and is slotted so as to produce the screening action required.