baber/WOPTO huggingface dataset:
Patent GB-581951-A (GB)
Title: Improvement in fluorescent lamps
IPC: C09K11/66
Filed: 1944-05-05
Abstract: 581,951. Luminescent materials. SYLVANIA ELECTRIC PRODUCTS, Inc. May 5, 1944, No. 8582. Convention date, March 24, 1943. Drawings to Specification. [Class 39 (i)] A fluorescent material consists of calcium silicate activated by small amounts of manganese and lead. Calcium carbonate and silica are mixed together in such proportions to yield approximately calcium metasilicate and about 1 per cent of manganese chloride added, together with some lead chloride. Although the amount of lead in the finished material may be less than 1 per cent because of loss in firing, as much as 40 per cent lead chloride may be used in the mixture. The materials are milled together in distilled water, dried and fired from 2 to 10 hours at about 1100‹ to 1300‹ C. This material may be mixed with magnesium tungstate to give a white light, 5 - 10 per cent giving light comparable with that from an incandescent lamp, 40 per cent being needed for daylight lighting. The material is used as a coating on the inside of a fluorescent lamp with activated coiled coil tungsten electrodes and a filling of argon at low pressure and mercury vapour.
Patent GB-1005582-A (GB)
Title: Improvements in instruments for counting or analysing beta rays
IPC: G01T1/178
Filed: 1962-03-06
Abstract: <PICT:1005582/C4-C5/1> <PICT:1005582/C4-C5/2> <PICT:1005582/C4-C5/3> A device for counting or analysing beta-rays from a radio-active substance comprises a scintillation counter 1, 2, 3 which includes a synthetic plastic phosphor 2 having a recess formed therein, and a Geiger-Mueller counter which has one wall of the chamber thereof formed by the wall of the recess and which receives and counts beta-rays emitted from a radio-active substance disposed adjacent the wall membrane 4 of the counter.  The membrane 4 can be made of gold-plated polyterephthalate film.  The wall of the recess is coated with a conductive material such as aluminium which acts as the cathode of the counter.  The anode 5 of the counter is formed as a loop of stainless steel wire and has a terminal 11 located in a Lucite (methyl methacrylate) plate 6 connected to the phosphor 2 through a packing ring 7 of vinyl plastic which shields the underside of the scintillator from visible light.  The plate 6 contains quenching gas inlet and outlet tubes 9 and 10.  The phosphor 2 is connected to the photomultiplier tube 3 by a Lucite light pipe 1. The size and shape of the phosphor 3 are such as to give sufficiently large scintillation signals for cosmic ray m  mesons which pass through the counter so that the m  mesons can be differentiated from the beta-rays.  Circuit means are provided, Fig. 3, for measuring the energy distribution of the beta-rays and for counting the beta-rays of a certain energy level range by the use of coincidence counting of the outputs of the two counters in a state of reduced background. Circuit means are also provided for counting only the beta-rays of an energy level below a certain value by the use of anti-coincidence counting of the outputs of the two counters in a state of reduced background. The circuit includes a multi-channel pulse height analyser.
Patent GB-550532-A (GB)
Title: Improvements in or relating to screw propellers
IPC: B63H3/02
Filed: 1941-07-09
Abstract: 550,532. Screw propellers. FAIRHURST, L. G. July 9, 1941, No. 8672. [Class 114] In a pitch-changing gear for a marine screw propeller, a gear train is provided comprising two similar epicyllic trains the planet wheels 31, 34 of which are mounted on the same carrier independently, a fixed sunwheel 30 engaging the wheels 31 and through them engaging an annular gear 26 rotating with the hub 14, and a pitch-changing sunwheel 36 driven through a pinion 42 and shaft 49, which engages the planet wheels 34 and through them engages an annular gear 35 coupled through a flange 38 carrying a spur gear 39 with spur gears on outer shafts 22 which rotate the blades to vary the pitch. Specification 538,386 is referred to.
Patent GB-181507-A (GB)
Title: Improvement in grass mowers
IPC: A01D67/00
Filed: 1921-03-21
Abstract: 181,507. Bentall, E. E. March 21,1921. Drawings to Specification. Mowing-machines.-The main frame of a mowing-machine is built up of a number of members permanently connected by welding to constitute a rigid whole.
Patent GB-788231-A (GB)
Title: Improvements in or relating to frequency changers
IPC: H03D7/10
Filed: 1955-03-25
Abstract: 788,231. Valve circuits for radio reception; frequency - modulation receivers; frequency changing. GENERAL ELECTRIC CO., Ltd., and DRYBROUGH, D. A. S. March 26, 1956 [March 25, 1955], No. 8804/55. Classes 40 (5) and 40 (6). In a circuit in which a valve is used in one frequency range as an amplifier and-in conjunction with a separate oscillator-as a frequency-changer in another, the coupling to the oscillator is arranged to attenuate oscillator harmonics. An A.M./F.M. receiver uses a triode-heptode as frequency changer for medium and long-wave bands, but on the short-wave F.M. band the triode oscillator section is disabled by opening switch 29 in its anode supply circuit. The heptode portion is then used as an additional I.F. amplifier, preceded by a separate short-wave frequency changer (not shown). Transformers 34, 36 are permanently connected in series in the anode circuit, being tuned respectively to the A.M. and F.M. intermediate frequencies and feed separate I.F. amplifiers and detectors, the outputs of which are combined in an audio stage. With such a circuit, when operating in the medium or long-wave band there are frequencies for which oscillator harmonics fall at the F.M. intermediate frequency and so pass through that channel. To minimize this effect, oscillator harmonics are reduced in amplitude by means of a resistor 32 which forms the coupling between the oscillator and frequency-changing sections of the valve, and which in conjunction with the input capacity of the injection grid of the heptode forms a low-pass filter. Generation of harmonics at the injection grid of the heptode is prevented by biasing this grid so that it is never positive; the bias comprises the negative voltage developed at the oscillator grid and which, unlike the alternating components, is not attenuated by the filter.
Patent GB-583793-A (GB)
Title: Improvements relating to the manufacture of articles and parts thereof subjected to stress at high temperatures
IPC: C22C19/00
Filed: 1942-06-26
Abstract: That part of the invention of the parent Specification according to which the articles before being put into service are reheated to a temperature at or above that to which they will be subjected in service, is modified by utilizing the chromium contained in the alloys as the carbide-forming element, instead of including the carbide-forming elements previously specified, viz., titanium, niobium, molybdenum, beryllium, tungsten and vanadium. The other elements specified in the parent Specification, viz., silicon, manganese, aluminium, rare earth metals, calcium, barium, strontium, phosphorus, arsenic, antimony, and tantalum, may still be included.
Patent GB-364439-A (GB)
Title: Improvements relating to direction indicators for vehicles
IPC: B60Q1/36
Filed: 1931-03-23
Abstract: 364,439. Road -traffic signals on vehicles. KRAUS, O., Bad Liebenstein, Th³ringia, Germany. March 23, 1931, No. 8943. Convention date, Sept. 24, 1930. [Classes 40 (i) and 118 (ii).] A direction-signalling arm 2 swinging on a pivot 1 is assembled with the operating electromagnet 3 as a unit which is detachable from the housing 8 by turning a bolt 7 so that its head is parallel with a slot in the bracket 5. A spring 13 facilitates the removal, and serves also as part of a contact rail 14. An extension 9 of a bracket 4 engages under an abutment 10.
Patent GB-1472739-A (GB)
Title: Method of producing acetylene
IPC: C07C2/78
Filed: 1976-03-05
Abstract: 1472739 Acetylene V U SHEVCHUK and O I SYPYAK 5 March 1976 08973/76 Heading C5E Acetylene is produced by mixing natural gas and oxygen, preheated to 630‹ C., in a molar ratio of 1 : 0À5-0À7, adding a heat carrier to this mixture, the heat carrier being the product of the incomplete combustion in oxygen of H 2  or H 2  and CO and having a temperature of 700- 2400‹ C., the molar ratio of the natural gas/O 2  mixture to the heat carrier being 1 : 0À01-0À4 and the temperature of the total mixture being 650-800‹ C.; and subsequently allowing combustion of the gas mixture to give a gas containing acetylene.
Patent GB-1028061-A (GB)
Title: Improvements in colour charts
IPC: G01J3/52
Filed: 1963-03-06
Abstract: 1,028,061. Colour charts. TUDOR COLOR CORPORATION. March 6,1963, No. 8975/63. Heading. G2J. A colour chart comprises at least three super-imposed transparent elements e.g. slides, or as shown, discs movable with respect to each other, each element having at least two monochromatic colour bands 14,16 having colour graduations 18-20 and 22-24 the degree of colour saturation being in opposite directions: the discs are superimposed upon one another so that for any colour viewed by transmitted light in a graduation of one band,the complementary of that colour is shown in the adjacent radial graduation. As described three colour discs are provided, yellow, red and blue and the two bands on each single colour disc are divided into ten sections from maximum brilliance to maximum saturation. The radially adjacent segments each, if superimposed, added to maximum saturation. A fourth disc having two bands with segments of equal dimensions and ranging in equal steps from white to black in opposite directions may be superimposed to give any degree of lightness or darkness.
Patent GB-433481-A (GB)
Title: Improvements in and relating to electrolytic devices
IPC: H01G9/048
Filed: 1934-03-22
Abstract: 433,481. Electrolytic condensers. BRENNAN, J. B., R.R.10, Box 78, Fort Wayne, Indiana, U.S.A. March 22, 1934, Nos. 8989 and 8990. Convention dates, March 22, 1933 and Dec. 21, 1933. Drawings to Specification. [Class 37] An electrolytic condenser electrode comprises a base having applied thereto a reticulated surface consisting of fine coherent particles of metal whereby the effective area of the electrode is increased. Preferably the electrode is formed by spraying molten aluminium of high purity on to a suitable base such as of metal, paper, wax, phenolic condensation products, rubber, glass, or cloth. A dielectric film may be formed on the rough surface and a further layer of sprayed metal applied, and the operations repeated if desired.
Patent GB-201203-A (GB)
Title: Improvements in or relating to winding devices for spring motors
IPC: F03G1/08
Filed: 1922-03-29
Abstract: 201,203. Wade, H., (Columbia Graphophone Manufacturing Co.). March 29, 1922. Spring power - storing mechanism.-In order to correct want of alignment 'between the winding means and the motor shaft, the latter is provided with a universal coupling comprising a screwed tube 19 having a pin 22, the ends of which loosely fit apertures 24, 25 in a flared outer tube 14 rigidly secured to the motor shaft 10.
Patent GB-977522-A (GB)
Title: Improvements relating to cistern inlet valves
Inventor: GOLDTRAP CHARLEY LINCOLN
IPC: F16K31/34
Filed: 1961-03-13
Abstract: 977,522. Valves. TWENTIETH CENTURY PRODUCTS CORPORATION. March 13, 1961, No. 9067/61. Heading F2V. [Also in Division G3] A cistern supply valve 27, Fig. 2, controlling the passage of water from an inlet 15 to outlets 24 in the cistern, one of which leads to a closet bowl, is of the diaphragm type with a tapered plug member 29 having an orifice 30 whereby a chamber 28 downstream of the valve is always open to the inlet 15; the pressure in the chamber 28 is controlled by a pilot valve 33 with a conical tip 35. Slidable on the chamber 28 is a float 18 having an eccentrically disposed conical surface 36, and an opening 40 in its side wall. The tapered plug 29 which deflects debris from the orifice 30 and prevents clogging thereof, is made of non-corrosive material. When the liquid is at the required level in the cistern the pilot valve 33 closes a bleed outlet 31 and the pressure in chamber 38 seats the supply valve 27. Upon emptying the cistern the float 18 descends, which float contains water up to the level of the opening 40; the surface 36 co-operates with the tip 35 to tilt and open the pilot valve 33 so relieving the pressure on chamber 28, the supply valve 27 being opened by the inlet pressure thereunder. As the water level rises above the opening 40 it traps air in the upper part of the float and the latter rises until the pilot valve 33 again seats, which pilot valve is of material having a lesser specific gravity than water, until the pressure has built up in chamber 28 via the orifice 30, sufficiently to close the supply valve 27 water continues to fill the tank and the closet bowl. In a modification, the float consists of an air chamber 20<SP>1</SP>, Fig. 5, a water chamber 20<SP>11</SP>, and a pilot valve actuator 19<SP>1</SP>, the two former chambers having their inner walls 43, 46 telescopically arranged. The actuator 19<SP>1</SP> is snap fitted to the wall 46 and is in threaded engagement with the wall 43 whereby the height of the opening 40<SP>1</SP> and hence the normal level of water in the cistern is adjustable. The wall 13<SP>1</SP> of the chamber downstream of the supply valve 27 is splined to centre the float and allow the passage of water therebetween. The diaphragm 27 is held in place by a ring 55 with a dished under surface 56, the ring incorporating flange portions 59, 60 co-operating with an annular casing flange 61 to lock the diaphragm.
Patent GB-215165-A (GB)
Title: Improvements in means for driving phonographs electrically
IPC: G11B19/265
Filed: 1923-04-03
Abstract: 215,165. Rosengart, L. April 3, 1923. Driving; combined working of gramophones with kinematographs.- A gramophone is driven by an alternating-current synchronous motor having a frictional drive upon the turntable, the driving-member being movable radially relatively to the turntable to enable the required speed to be attained. With this arrangement, no governor is required, and the machine may be stopped, without interrupting the current, by retarding the turntable by hand sufficiently to throw the motor out of step. In the construction shown, the motor M is supported by a frame 6, pivotally mounted at 7 between the branches 9 of a fork, which is adapted to rock on pivots 10. The end 9<1> of one of the arms 9 rests upon an adjustable screw 12. The turntable 1 is driven frictionally by a, thin-walled hollow rubber ball 14 on the end of the motor spindle 8. The weight of the suspended motor presses the ball against the turntable, the. point of engagement being varied by turning the screw 12. The position of the support of the motor may also be adjusted by providing a number of holes in the arms 9 for engagement with the pivots 10. The synchronous motor M, which preferably has four, six, eight, or ten poles, is connected to the supply circuit through a small step-down transformer 15. The motor mechanism may constitute a removable unit for use with an ordinary gramophone, in which case the motor is suspended in such a way as to press the driving-member against the upper face of the record. A kinematograph projector and a gramophone may be arranged to work in synchronism by driving the gramophone in the manner described above, and driving the kinematograph by a similar motor connected to the same alternating current supply circuit.
Patent GB-112731-A (GB)
Title: An Improved Electrical Furnace for Hardening Steel and the like.
Inventor: WILD LANCELOT WILLIAM
IPC: H05B3/64
Filed: 1917-06-26
Abstract: 112,731. Wild, L. W., and Barfield, E. P. June 26, 1917. Resistance furnaces for hardening steel &c. Molten salt, for instance a mixture of sodium and potassium chlorides, is contained in a crucible a of silica or other non-porous and non-conducting material, wound except towards its upper end with resistance wire b of nickel-chromium &c., and surrounded with non-conducting material such as powdered quartz e in an outer casing d. Electric connexion is made from bands f on the outer casing to bands c on the crucible. The salt should only partly fill the' crucible, so that the cooler upper end of the latter prevents creeping. An asbestos ring e<1> closes the outer casing.
Patent GB-276906-A (GB)
Title: Improvements in and relating to means for consuming smoke in steam boiler furnaces
IPC: F23L9/00
Filed: 1927-04-04
Abstract: 276,906. Crowther, W. E. April 4, 1927. Air, supplying; baffles.-In a steam boiler furnace, air for combustion is forced by steam jets through pipes H, Fig. 1, traversing the flue A to the space behind the grate B where they are bent into the form of stirrups L, the forward branches of which rest on the rear deadplate C and are provided with perforations M delivering intersecting streams of air over the fire. In the modification shown in Fig. 2, the pipes H are continued from the stirrups L beneath the grate and terminate in perforated vertical sections mounted on the front deadplate C. In a further modification, shown in Fig. 4, the air supply pipes H pass from the front of the ash-pit to the rear where they are bent upwardly and then pass forwardly over the fire terminating in perforated vertical sections mounted on the deadplate. A perforated screen D of the kind described in Specification 262,883 is arranged at the rear of the grate. Such screen, however, may be provided with two separate nests of tubes.
Patent GB-701627-A (GB)
Title: Improvements in or relating to electrical measuring apparatus
IPC: G01R27/26
Filed: 1952-04-10
Abstract: 701,627. Automatic frequency control systems. SPERRY CORPORATION. April 10, 1952 [April 12, 1951; May 11, 1951], No. 9306/52. Class 38 (4). [Also in Group XXXVI] Apparatus for detecting the inflexion points of the response curve of a resonant circuit or cavity comprises a signal generator, means for modulating the frequency of the signal, feeding it to the cavity or circuit, detecting amplitude modulation in the response of the cavity or circuit and finding the frequencies at which distortion components are a minimum. In an automatic control arrangement'to maintain the frequency of a reflex Klystron oscillator 65 at the frequency f1 at which the inflexion point in the response curve of a translating device, such as a low-pass filter 50, 'is located. The output of the audio oscillator 12 produces a modulating signal of frequency fa which is applied through a transformer 46 to the repeller electrode so as to frequency modulate the signal produced by the tube 65. The output of the oscillator 12 is also connected to a frequency doubler 27 which provides a reference signal of frequency 2fa. The radio frequency signal produced at the output of the tube 65 is applied through an attenuator 48 to a low-pass filter 50, the output of which is applied through a demodulator 18 to an amplifier 20 tuned to the second harmonic of the signal produced by the audio oscillator 12. The outputs of the amplifier 20 and the frequency doubler 27 are applied to the inputs of a phase detector 54, the output of which is applied through a D.C. amplifier 52 across the resistor 44 and controls the voltage applied to the repeller electrode of the tube 65 so as to maintain the frequency of the signal produced by this tube at the frequency f1 at which the inflexion point of the response curve of the filter 50 is located. The filter 50 may be replaced by a resonant circuit such as a cavity resonator. Specification 609,298, [Group XXXVI], is referred to.
Patent GB-181853-A (GB)
Title: Improvements in or relating to fillers and the like for boots and shoes
IPC: A43D3/14
Filed: 1921-03-29
Abstract: 181,853. Ford, R. March 29, 1921. Trees and stretchers.-Hollow fillers, used for displaying boots and shoes, are closed in and stiffened at the bottom of the forepart by a plate, which prevents the sides of the filler from spring- ing inwards. A separate plate 3 may be used, riveted to turned over edges of the forepart, or the edges of the forepart may be extended inwards and be riveted to a plate or to each other. Reference has been directed by the Comptroller to Specifications 3496/75,12410/02, and 5613/09.
Patent GB-948132-A (GB)
Title: Improvements relating to processes for binding particulate solid materials
Inventor: EMBLEM HAROLD GARTON
IPC: C04B33/13
Filed: 1959-03-18
Abstract: A composition is made by mixing a particulate refractory material, e.g. sillimanite, fire clay grogs, calcined kaolin, silica, crystobalite, quartz and alumina, with a solution of an acid-hydrolysed isopropyl silicate prepared e.g. by the processes described and claimed in Specifications 948,136 and 948,137, The hydrolysed solution may be made by adding the silicate to a mixture of water and acid, e.g. HCl or H2SO4, and preferably also containing a mutual solvent for the water and silicate. Examples 1 to 12 describe the preparation of isopropyl silicates; Examples 13 to 21 describe the preparation of the acid-hydrolysed silicate solutions; Examples 22 to 24 describe the preparation of the refractory mixes; and Examples 25 to 27 describe the use of the solutions for binding refractory materials.
Patent GB-683865-A (GB)
Title: Improvements in or relating to fluid mixing device
Inventor: BRUYNES HENDRIK
IPC: G01M9/04
Filed: 1951-04-23
Abstract: 683,865. Boundary layer control in wind-tunnels and diffusers. UNITED AIRCRAFT CORPORATION. April 23, 1951. No. 9376/51. Class 4. The boundary layer of a fluid passing through a passage, such as a wind-tunnel or diffuser, is energized by vortices which promote mixing of the main stream with the boundary layer, such vortices being generated by members mounted on the wall of the passage and projecting into the main stream. The generators may consist of small aerofoil-shaped members 12, their tips, at which the vortices are produced, being located in the surface of separation between the main stream and the boundary layer. The aerofoils are mounted in circumferential rows and may all be arranged at the same angle of incidence to the main stream to produce vortices rotating in the same direction, Figs. 2 and 3, or preferably are arranged alternately at positive and negative angles of incidence to produce counter-rotating vortices, Figs. 5 and 6. In the case of a single row of aerofoils they are located at the separation zone. Fig. 9 shows an arrangement with three rows of aerofoils 12a, 12c, 12e of decreasing length in the downstream direction, the tips of the rearmost ring 12a being in the surface of separation between the main stream and the boundary layer.
Patent GB-127964-A (GB)
Title: Improvements in Ore Reduction Apparatus.
Inventor: GOOLD LEWIS WILLIAM
IPC: F27B3/02
Filed: 1918-06-07
Abstract: 127,964. Goold, L. W., (MacDonald, P. J., and Claflin, C. L.). June 7, 1918. Shaft furnaces; charges, agitating.-In an apparatus for the reduction of oxide ores the upper layers of ore are agitated by blasts of reducing gases in an initially-heated chamber, and the supply arrangements are such that this agitation can be effected whatever the height of ore in the chamber may be, and progressively as the chamber is filled. The apparatus consists of a vertical chamber 10 having a feed opening 18 leading from a calciner 19 and a discharge conveyer 16. The reducing gases are delivered through openings 25 at various levels, and through pipes 21 set at an angle, and terminating close to the lower edge of a depending wall 20 around the opening 18. The perforations in the pipes 21 decrease in size towards the closed ends. The level at which the reducing gases is delivered is determined by suitable valves. The spent gases are withdrawn through the pipe 27, their passage into the calciner being prevented by the depending wall 20. The chamber is initially heated by a burner 28, which is withdrawn before the change is introduced.