baber/WOPTO huggingface dataset:
Patent GB-873631-A (GB)
Title: Electrical signal amplifiers
IPC: H03F3/40
Filed: 1958-01-02
Abstract: 873,631. Valve amplifying circuits. NEFF INSTRUMENT CORPORATION. Jan. 2, 1958 [Jan. 16, 1957], No. 238/58. Class 40(6) In an amplifier using modulation and demodulation of a higher frequency and with negative feedback between output and input, means are provided to isolate the output circuit from both input and feedback circuits with respect to the signal. D.C. and low-frequency signals are applied from input terminals 1 to a vibrator-type interruptor 2 comprising a single-pole changeover switch which alternately connects the signals across one or other half primary of an input transformer 6. The A.C. signal appearing accross the transformer secondary is amplified in an R.C.-coupled amplifier 9, 15, 22 in which the second stage 15 is provided with an anode-to-grid condenser 20 to prevent parasitic oscillation. The output is fed via a cathode-follower 29 to a transformer 34 having two centre-tapped secondaries, 35, 36, each feeding a ring-type demodulator. The interrupter 2 is driven from a push-pull oscillator 37, the tuned grid circuit of which comprises condenser 38, coil 39 and the interrupter coil 4 in series, the centre of the circuit being earthed via resistor 49 and condensed 50. Parasitic oscillation at a frequency determined by coil 4 is prevented by shunting condensed 48 and damping resistor 47. The oscillator anodes are coupled to a push-pull primary winding 42 on a transformer 43 and oscillations are maintained by a secondary 44 which is coupled to the grid circuit via isolating resistors 45, 46, Resistors 40, 41 cause grid-current limiting to occur, so that the waveform in the anode circuit of the oscillator is rectangular. Centre-tapped transformer secondaries 51, 52, provide a comparison input to the two ring-type demodulators, of which one provides a demodulated signal output via filter 75-79. The other supplies a negative feedback signal to the input of the amplifier via resistance-capacity network 61, 62, 65, 64, 63, 7, in which resistor 64 is made variable in order to adjust the overall gain.
Patent GB-1311042-A (GB)
Title: Rf sputtering apparatus
IPC: B05B5/00
Filed: 1971-01-04
Abstract: 1311042 Sputtering apparatus INTERNATIONAL BUSINESS MACHINES CORP 4 Jan 1971 [22 Jan 1970] 266/71 Heading C7F RF sputtering apparatus includes a vacuum chamber 11, an anode 51, a target 19 in spaced relation to 51 and having at least a portion of 19 parallel to 51, a cathode 18 spaced from target 19 and shielded from anode 51 thereby, means 34 to apply R. F. between cathode 18 and anode 51, and a fluent material 27 in the space between cathode 18 and target 19 to transfer electrical energy from the cathode to the target to sputter material from the target. The fluent material 27 is a good medium for transfer of heat and electrical energy, is non-solidfying and should have low vapour pressure, and may be a liquid metal, e.g. Ga, As, or Hg, or a metal paste, e.g. containing Ag. Argon may be the sputtering gas, target 19 may be quartz, vacuum pumps 16 and 45 may work in sychronism to avoid differential pressures between chamber 11 and the inside of the cathode structure; and both cathode and anode structures may be conventionally water-cooled. Various means of preventing fluent material from leaking into a vacuum space are described. In a modification Fig.5, (not shown), target 19 is in the form of a cup having a planar cathode near the bottom thereof, de-ionised water is used as the fluent material, and is fed down the cathode support stem and between the planar cathode and the cup bottom.
Patent GB-574118-A (GB)
Title: Improvements relating to mounting labels or tickets in show-cases and the like
IPC: G09F3/18
Filed: 1944-01-06
Abstract: 574,118. Attaching labels. EDMONDS & CO., Ltd., A., and ATHERLEY, A. H. Jan. 6, 1944, No. 293. [Class 73] For mounting a label or ticket, a shallow recess b is cut in the surface of a showcase, drawer, bookshelf or the like a, into which the label c is pressed with a tight fit, a notch or groove e being provided at one side of the recess to facilitate the removal of the label by the finger nail or a tool. The recess may be undercut and the notch may be closed by an elastic plug f, coloured to match the surface of the showcase &c., in order to prevent unauthorised removal of the label.
Patent GB-214578-A (GB)
Title: Improved process for the electro-osmotic purification of saccharine juices
IPC: C13B20/18
Filed: 1924-01-04
Abstract: 214,578. Elektro-Osmose Akt.-Ges., (Graf Schwerin Ges.). April 18, 1923, [Convention date]. Tanning with aldehydes, sulphite liquors, and other special chemicals.-An anode diaphragm of quinone-tanned leather is used in the purification of saccharine juices by electric endosmose. In preparing the diaphragms hides which have been cleaned and delimed are immersed for about 2 to 4 hours in a rotary cask about one-third full of an aqueous solution of quinone of about 0.4 per cent strength. The leather is then washed. Before use as a diaphragm it is immersed in boiling water for at least an hour to promote shrinking.
Patent GB-623360-A (GB)
Title: Alloy iron castings and method of producing the same
IPC: C22C37/10
Filed: 1945-01-04
Abstract: An alloy cast iron contains the following elements with the percentage ranges stated: total carbon 2.5 to 3.5, silicon 1.5 to 3, manganese 0.5 to 1.5, chromium 0.2 to 1.5, vanadium 0.2 to 1.25, aluminium 0.2 to 0.75, iron the balance.  The proportions of the constituents are such that, for the section and rate of cooling of a casting the alloy iron structure would, in the "as cast" condition, be similar to that of a fine-grained white cast iron, the alloy iron having been heat treated to a temperature above the critical range until the cementite has been partially broken down into small particles of non-acicular form and even distribution and then cooled slowly through the critical range to produce a casting which is machinable.  The alloy cast iron may also contain zirconium and/or tellurium up to 0.05 per cent.  The cast iron may contain other elements as impurities, such as the following, up to the percentage ranges stated: nickel 0.75, tungsten 0.25, cobalt 0.25, titanium 0.4, boron 0.1, molybdenum 0.25, phosphorus 0.5, sulphur 0.1.  Preferably the cementite particles in the alloy iron casting, e.g. a piston ring, after heat treatment, have an apparent size which does not exceed 1/8 inch in any direction when the specimen is examined under a microscope at a magnification of 100 diameters.  To produce such a microstructure, in an example wherein the metal is approximately 5/8 inch thick as cast, it is reheated to 1000 DEG C and cooled down at a rate of 2 DEG C to 3 DEG C per minute through the critical range. Reference has been directed by the Comptroller to Specification 390,687.
Patent GB-1283671-A (GB)
Title: Weatherproof lamp
Inventor: AUDESSE EMERY
IPC: H01K1/32
Filed: 1971-01-04
Abstract: 1283671 Electric incandescent lamps; fluorescent discharge lamps GTE SYLVANIA Inc 4 Jan 1971 [2 Jan 1970] 351/71 Headings H1D and HlF A lamp bulb of the incandescent filament or fluorescent type has a first light-transmitting coating made of a material which is impermeable to hydroxyl ions and a second light-transmitting coating of coloured plastics material, the second coating lying over the first coating. The first coating, which may comprise a silicone or titanium dioxide, prevents any water which falls on the lamp from reaching the glass of the bulb where it would react with the alkali present in the glass to form a soapy material.
Patent GB-122195-A (GB)
Title: Improved Manufacture of Mercuric Oxide.
IPC: C01G13/02
Filed: 1919-01-06
Abstract: 122,195. Elektrizitatswerk Lonza, (Assignees of Kuhn, E.). Jan. 7, 1918, [Convention date]. Nitrogen oxides. - Metallic mercury is treated with nitrogen oxides and with gases containing oxygen to obtain mercurous nitrate, which is then heated to produce mercuric oxide and nitrogen peroxide for use again. The apparatus described comprises two closed vessels 1, 2 provided with refiux condensers 6. Mercury is fed through a pipe 3 into liquid nitrogen peroxide in the vessel 1, oxygen being passed in as shown. After the reaction, the condenser is put out of action, and the excess of peroxide is driven over into the vessel 2. The vessel 1 is heated to decompose the mercurous nitrate, the peroxide liberated being collected in the vessel 2. The vessel 2 is now ready to receive fresh mercury, the vessel 1 being emptied or replaced by an empty one. The process is applicable to the treatment of the mercury residues obtained in the synthesis of organic substances from acetylene.
Patent GB-1091172-A (GB)
Title: Cyanide-free alkaline bright zinc plating baths
IPC: C25D3/22
Filed: 1965-01-06
Abstract: A cyanide-free, alkaline, bright zinc plating bath contains one or more polyamines, other known brightening agents and additives and, as a separate compound, thiourea, preferably in amount 0.5-15 grams/litre.  The polyamines can be added in amount 0.5-15 grams/litre; brighteners such as benzaldehyde, coumarin vanillin anisic aldehyde and heliotropin 0.4-4 grams/litre; colloids such as gelatine, gum arabic and tragacanth 1-2 grams/litre; pore preventing agents such as octyl, decyl, lauryl and dodecyl sulphonate 1-5 grams/litre.  Zinc can be added as zinc oxide dissolved in sodium hydroxide.
Patent GB-221138-A (GB)
Title: Improvements in pocket knives
IPC: B26B1/04
Filed: 1924-01-08
Abstract: 221,138. Sibley, J. T. Jan. 3, 1924. Pocket-knives.-In a pocket-knife having one or two blades foldable into the handle the tang of each blade is formed with an elongated slot b<x> engaging the pivot pin f<1> and with a pin b<2> connected tc a toggle link T. The links are connected respectively with the arms s<1>, s<2> of two slides S<1>, S<2> disposed in recesses in the handle scales and operated by finger studs s<11>, s<22> projecting through slots in the scales; the slide s<1> has a spring piece s<x> which bears against the slide S<2> and holds both slides resiliently in their recesses with one or other of shoulders s<12>, s<13> against projections h<14> in the scales. To open the blade B<1> the stud s<11> is pressed inwards to clear the shoulder s<13> from the projection h<14> and then slid away from the pivot to move the slide and cause the toggle link to rock the blade on its pivot until it is in line with the handle, the final movement of the slide causing the blade to slide on its pivot so that a projection b<1> on its tang engages with a shoulder h<x> on the spine h separating the scales; on releasing the stud s<11> the shoulder s<12> engages behind the projection h<14> and locks the blade in the open position. The spine and scales are secured together by nuts f<2> on the pivots f<1> so that the toggle links and other parts are easily accessible.
Patent GB-597162-A (GB)
Title: Improvements in or relating to laundry presses
IPC: D06F71/06
Filed: 1945-01-05
Abstract: 597,162. Pressing garments. HOLTTUM, W. R. Jan. 5, 1945, No. 566. [Class 138 (ii)] Means for boosting the pressure of a lower table of a laundry press comprises a subsidiary ram 11 operatively connected as by a lever 9 pivoted at 8, bifurcated and formed to gear with racks 6 attached to the main ram 3 against which the bearing member 4 of the lower press table engages. The other end 10 of the lever 9 is shaped to engage the shaped end of the ram 11. The ram cylinder 13 is supplied with air or other power medium through a valve 16 which may be automatically opened by movement of the ram 3.
Patent GB-212683-A (GB)
Title: Bottle disc sealing machine
IPC: B67B1/10
Filed: 1923-10-08
Abstract: 212,683. Moore, F., and Grabham, A. Oct. 8, 1923. Stoppering. - Cardboard closure discs &c. are applied to bottles by apparatus comprising a lever k carrying a pivoted link g which, during the first part of the movement of the lever k, actuates a sliding stud n adapted to engage in a slot m in a pivoted arm l to transfer a disc s from a relservoir g to a position above the bottle mouth, when further movement of the lever causes a roller r to engage a spring-pressed plunger i which forces the disc into the bottle mouth. The bottle support comprises an adjustable stand b and a detachable member a which is used for bottles of smaller size.
Patent GB-778507-A (GB)
Title: Improvements in centrifugal machines for washing out starch from starch-containing materials
IPC: C08B30/00
Filed: 1956-01-06
Abstract: 778,507. Centrifugal strainer separators. STARCOSA MASCHINEN-UND APPARATEBAU GES. Jan. 6, 1956 [Jan. 6, 1955 ; July 4, 1955], No. 606/56. Class 46. [Also in Group V] Apparatus for suspending and washing out ground or comminuted raw material for obtaining starch therefrom comprises a device disposed inside a centrifugal screening drum and provided with nozzles for spraying washing liquid while the device rotates at a different speed from the drum, to convey the material across the screen in the case of a cylindrical or slightly conical drum or to oppose the conveyance if this is being effected by using a steeply conical drum. Nozzles 9 mounted on arms 7 radiating from a rotating tube 6 spray water supplied under pressure to the tube 6 on to material on a screen 2 backing a cylindrical drum 1 mounted on a hollow axle 4 rotated at a speed different from that of the tube 6. The material, fed through a shoot 12 is conveyed across the screen 2 by the water jets 9 which are arranged spirally on tubes 8 parallel to the axis of the drum, the jets either overlapping to provide a continuous worm of water or to give a disc of water in which case staggered gaps are provided in the discs for the passage of the material. Scoops 16 on arms 17 on the tube 6 collect material from a ring 15 on the end of the screen and direct it into an outlet 18, liquid being removed at 19. The nozzles 9 have spherical mountings to make them adjustable in both axial and radial directions. A slight conicity in the drum may assist the conveyance of sticky material and the ring 15 be omitted. To economise in washing out liquid, a steeply conical drum allows centrifugal force to effect the conveyance of the material and the nozzles are turned to direct their sprays against such movement. In a further modification, the water supply is divided ; fresh water is sprayed on to the outermost part of the screen at 130, Fig. 13, and the water therefrom is collected and pumped to inner nozzles 131 before being fed to the outlet 134.
Patent GB-571582-A (GB)
Title: Means of producing compressed air by using cylinder of any internal combustion engine and the like as a compressor
IPC: F04B41/04
Filed: 1945-01-15
Abstract: 571,582. Cylinders supplying compressed air. HOLDEN, R. C. Jan. 15, 1945, No. 800/44. [Class 7 (ii)] To adapt a cylinder in an internal-combustion engine to act as an air compressor, the sparking- plug is replaced by a fitting B, Fig. 1, having inlet and delivery valves A, C for the air and the cylinder valves are so constructed that they may be rendered inoperative, the valve stems being made in two parts, of which the lower one is removable. A tongue and slot connection E<6>, E<7>, Fig. 2, held in place by a sleeve E<4> on the retaining- cup E for the valve spring permits the lower portion to be removed sideways when the sleeve E<4> has been raised clear of the connection E<6>, E<7>.
Patent GB-1048792-A (GB)
Title: Improvements in or relating to the grinding of raw friable material
IPC: B02C13/18
Filed: 1965-01-07
Abstract: 1,048,792. Grinding mills. L. R. ZIFFERER. Jan. 7, 1965 [Jan. 9, 1964], No. 821/65. Heading B2A. A grinding mill 10 comprises a rotary table 52, Figs. 3 and 4, carrying radial members 62 for impelling material falling from an inlet 14, Fig. 1, against cylindrical wall means 46, 48, Fig. 4, while also inducing rotary movement of material within the mill, and radial barrier plates 80 for . causing an abrupt change in the direction of movement of material rotated into engagement therewith. The table 52 is mounted on a shaft 36 driven by a motor 12. The wall means comprises a fixed upper member 46 and an adjustable lower member 48, an annular space 76 being provided between the lower edge of the member 48 and the table 52. Impeding members 68 are secured to the member 46, the lower portions of the members 68 overlying the member 48 and clamping it in its adjusted position. The wall means is surrounded by a shell 30 provided with a bottom plate 32. The plates 80 are vertically adjustable in channel members 82. The lower surface of the table 52 is provided with radial vanes 92 for inducing an air current from an inlet 94 past beating means 38,through an opening 34 into the cylindrical space 96 between the shell 30 and the wall means, the air being discharged through the wall member 46 by inlet means 98. Sufficiently-ground material of powder size is removed through a discharge conduit 16 by means of suction induced by a blower within a classifier 20, Fig. 1, and by a blower 22 connected by means of a conduit 24 with the upper end of the mill. Extending tangentially from the lower portion of the mill casing 26 is a material discharge conduit 100 the outer end of which leads to the lower portion of an elevator 102 the upper portion 104 of which leads to the upper end of the mill. Table 52 is provided with impellers 106 for sweeping material into the conduit 100. The upper surface of the table 52 and the lower surface of the member 48 may be lined with rubber. The members 62 are detachably secured to the table 52 may be provided with a skirt portion, Figs. 9 and 10 (not shown) for confining ground material issuing from the space 76. In a modification, Figs. 11 to 14 (not shown), an overhead drive is provided for the table 52 and sufficiently-ground material of gravel size issuing from the space 76 falls by gravity into a discharge member. In another modification, Figs. 15 and 16 (not shown), the mill comprises several superposed grinding sections.
Patent GB-788828-A (GB)
Title: Halogenated hydrocarbons
IPC: C07C19/041
Filed: 1956-01-10
Abstract: The invention comprises a modification of the process of the parent Specification, in which the tetrachloroethylene used in the first stage of the earlier process is wholly replaced by one or more polychlorinated dirivatives of hydrocarbons of 2 or 3 C atoms, heated to 300-700 DEG  C. with a quantity of chlorine such that the excess of chlorine remaining is at most equal to the number of molecules of tetrachlorethylene produced, the remaining stages being the same as before.  The initial reaction may be carried out with or without a coarse, granular or crushed inorganic vacuolar catalytic material. In examples, hexachloropropane and tetrachlorethane are treated with specified proportions of chlorine under varying conditions in accordance with the above ranges and the proportions of products obtained at the various stages are given in tables.  A drawing of the plant in which the reaction is carried out is given. Tetrachlorethylene and carbon tetrachloride are obtained in predetermined proportions of about 2 : 1, according to the temperatures.
Patent GB-1279792-A (GB)
Title: Message handling systemss
Inventor: HSIAO MU-YUE
IPC: H03M13/19
Filed: 1971-01-08
Abstract: 1279792 Error correction systems INTERNATIONAL BUSINESS MACHINES CORP 8 Jan 1971 [3 Feb 1970] 928/71 Heading G4A An encoder adds r check bits to k data bits, each check bit representing a number of data bits, the average number of data bits per check bit being >(r/2) and not more than r-1, any two check bits representing no more than one common data bit, and each data bit being represented by exactly two check bits (see Fig. 4), and a decoder has input circuitry which supplies to an error correcting circuit for each data bit, the data bit itself and the two combinations of check bits and other data bits representing that data bit, the error-correcting circuit being capable of correcting each data bit as necessary provided no more than one of the inputs for that bit is in error. The check bits may be produced by exclusive OR gates, the decoder may have a pair of exclusive OR gates for each data bit having inputs comprising the corresponding two combinations of check bits and other data bits, and the error-correcting circuit may comprise majority logic circuits receiving inputs from the respective data bits and the corresponding pair of exclusive ORgates, Fig. 6 (not shown). By adding a parity bit c7 for all the data bits, detection of a double error is also made possible. Error syndrome bits, e.g. S1 = c 1 #(m 1 #m 2 #m 3 #m 4 #+m 5 ) are each equal to zero when there is no error in the data and check bits, and the additional syndrome bit S 7  ensures that a single bit error will occur in three syndrome bits. An OR circuit, Fig. 7 (not shown), detects when any S 1  to S 7  = 1 and the inverted output of an adder is 1 for no errors and two errors, so that by gating these two signals together an output indicative of the presence of two errors is obtained.
Patent GB-467845-A (GB)
Title: Piston
IPC: F02F3/10
Filed: 1936-01-11
Abstract: 467,845. Pistons. W. P. (LYMING- TON), Ltd., and HOWLETT, J. W. Jan. 11, 1936, No. 973. [Class 122 (i)] A tubular steel &c. skirt 2 is supported solely by arcuate strips 4 extending from its thrust faces and embedded in the cast metal of the bosses. The strips may be formed by pressedin portions of the skirt wall between incisions 3 and the upper edge or between parallel incisions. Alternatively the strips may be separately formed and welded or otherwise secured to the skirt, the portions embedded in the bosses being of tubular form and perforated for keying purposes. In a modification, Fig. 9, the bosses are connected by two strips 16 embedded in the bosses at 17 and provided with pressed-out portions 18 welded &c. to the skirt. Specifications 366,625, 426,190, and 460,321 are referred to. According to the Provisional Specification, the strips may be formed by the cast metal of the head.
Patent GB-264507-A (GB)
Title: Method and device for the application of liquid to bands of material
IPC: G03C1/74
Filed: 1927-01-12
Abstract: 264,507. Stock, J. J. F. Jan. 14, 1926, [Convention date]. Coating materials in long lengths.-In a method of applying liquid to bands of material such as kinematograph films &c. for colouring, varnishing, regenerating &c. by means of a roller over which the band or film is passed, the latter is supported at its lateral edges only and makes contact with the surface of a film of liquid raised bv the roller. The roller c, Fig. 1, is provided with a shallow groove f, Fig. 4, of a width corresponding to the width of the part of the band to be treated. The apparatus is described as applied to a method of regenerating kinematograph films. The film is first cleaned and then passed over guide rollers b, Fig. 1. The film a is tensioned by means of a weighted roller d suspended in a loop of the film. Above and below the roller d are electric contact devices e which give warning if the film becomes too slack or too tight, and may be arranged to stop the machine. From the rollers b the film passes over the roller c which rotates at a speed proportional to the velocity of the film and is preferably driven by contact therewith. The roller c dips into the treating liquid, which is maintained at a constant level in a vessel g. The groove in the roller carries up a thin sheet of liquid with the surface of which the film makes contact. Preferably the groove in the roller is slightly deepened at the sides as shown in Fig. 4 so that the liquid level falls off at the edges, thus preventing the liquid from passing through the perforations in the film.