baber/WOPTO huggingface dataset:
Patent GB-668491-A (GB)
Title: Arrangements for reducing distortion in electric signals
IPC: H04N5/16
Filed: 1950-01-20
Abstract: 668,491. Television. WESTERN ELECTRIC CO., Inc. Jan. 20, 1950 [Jan. 26, 1949], No. 1561/50. Class 40 (iii). Distortion of television signals (or other signals which comprise recurrent reference level portions) due to departure from a fixed reference level (i.e. absence of the D.C. component) is reduced by means of a feed-back loop circuit connected between the output and input circuits of a transmission system in which the signals are flowing. In the arrangement shown in Fig. 7 distorted signals from a source 60 are applied to a transmission system 66, the output of which supplies signals (a), to utilization output terminals 65 and (b) to a feed-back loop circuit comprising an amplifier 62, envelope detector 63 and a further amplifier 64, the output of which is applied to the input circuit of the transmission system 66. The envelope detector 63 comprises a " clamp " circuit (Fig. 5), the charge on the condenser 43 of which is arranged to follow the envelope of the successive reference levels of the distorted signals (i.e. the level of the blanking or synchronizing signals of a television waveform which lacks the D.C. component) by means of a switching device 42 which is arranged to connect condenser 43 across the source of signals during the occurrence of the reference levels. The output of 63, after amplification at 64, is then applied to the signal source in opposite polarity so that undesired variations in the signal are reduced. The envelope detector may also. include devices appropriate to the character of the output signal such as a rectifier or demodulator, if the signals are modulated on to a carrier wave. Details of the switching device 42 are described with reference to Fig. 4 (not shown). The Specification describes a further arrangement, Fig. 6 (not shown) which is similar to Fig. 7 except that the transmission system 66 is omitted and replaced by a cable conductor and it is stated that the arrangement may be bridged across a cable at any point to remove any accumulated distortion of such nature as can be removed by " clamp " circuits. By connecting a peakreacting valve voltmeter which is biased by a voltage equal and opposite to the output voltage of the first amplifier in the feed-back loop (equivalent to 62, Fig. 7) the peak-to-peak value of the signal may be indicated, Fig. 8 (not shown). Specifications 464,828, 508,377, 515,361 and 515,362 and U.S.A. Specification 2,299,945 are referred to.
Patent GB-100917-A (GB)
Title: Improvements in Springs.
Inventor: MILLEA FRANCIS JOSEPH
IPC: F16F1/04
Filed: 1916-02-02
Abstract: 100,917. Millea, F. J. Feb. 2, 1916. Helical springs for beds, chairs, upholstered articles, &c. are formed with acute-angled convolutions, the bends 1 in successive convolutions being in offset relationship, so that no bend is directly over or under another bend without an intervening reach 2. The reaches 2 between the bends 1 may be curved. The convolutions in the construction shown in Fig. 1 are arranged to give a eve-pointed configuration in plan; but they may be arranged to give any other oonfiguration. The bends 1 can be used as points of attachment as well as the end members 3.
Patent GB-445928-A (GB)
Title: Method of automatically weighing out materials of various kinds into batches of approximately equal weight
IPC: G01G15/02
Filed: 1934-10-18
Abstract: 445,928. Weighing-apparatus. POPOV, V. D., 743, Zelena Ul, Bubenec, Prague. Oct. 18, 1934, No. 1623/36. Divided out of and addition to 445,876 under which a Specification was laid open to inspection under Sect. 91 of the Acts, April 23, 1935. [Class 143] The method claimed in the parent Specification, of weighing out batches of material into receptacles passed successively beneath a series of volumetric measuring devices 3a, 3b ... of successively diminishing size is modified by arrangements wherein measuring devices and weighing balances are located at the same stations. As shown, the first measuring device 3a supplies a part portion to the receptacle 2a and the weight is checked by a balance 7a which controls the delivery or otherwise of an additional quantity from the second measuring device 3b and so on. In a modification, the first balance 7a is omitted, and the balances control the deliveries from the measuring devices located at the same stations. In a further modification, the last-described arrangement is combined with the arrangement described in the parent Specification, that is, at some of the stations, only a measuring device or a balance is provided.
Patent GB-346471-A (GB)
Title: Improvements in or relating to dry plate rectifiers
IPC: H01L25/03
Filed: 1930-01-17
Abstract: 346,471. Rectifying alternating current. SIEMENS-SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Jan. 17, 1930, No. 1713. Convention date, Jan. 18, 1929. [Class 38 (ii).] Static contact rectifiers, arrangements of. -Relates to static contact rectifiers of the metal compound type connected in accordance with the Gratz circuit, and consists in arranging the elements in two columns each of which comprises groups of elements 6, 7 and 8, 9 connected in opposition, the load circuit such as a battery 12 under charge being connected between the points of interconnection 10, 11 of the groups. Thus failure of one column of elements due to overheating set up by a defective element in that column does not produce a short-circuit discharge path for the battery. Specification 293,257, [Class 38 (ii), Electric currents, Converting &c.], is referred to.
Patent GB-900857-A (GB)
Title: Apparatus for cleaning or scraping chutes in large furnaces
IPC: F23K3/00
Filed: 1959-01-17
Abstract: 900,857. Apparatus for scraping deposit from the inside of shoots. MARTIN, W. J. Jan. 17, 1959, No. 1785/59. Class 78 (1). Fuel 15 falling down shoot 1 leaves a deposit on the inside thereof which tends to choke the shoot, and this deposit is dislodged by a scraping bar 2 which is reciprocated up and down the shoot by cables 3 driven by drum (or discs) 9, the bar being counter-balanced by weight 11. Cables 3 are guided by pulleys 7 and cleaned by brush 8.
Patent GB-304656-A (GB)
IPC: G03B21/62
Filed: 1929-01-18
Abstract: 304,656. Siemens - Schuckertwerker Akt.-Ges. Jan. 23, 1928, [Convention date]. Projection screens consist of tracing cloth bearing a layer of paraffin applied either alone or in a mixture with paraffin oil.
Patent GB-339839-A (GB)
Title: Hydraulic device more particularly applicable to the control of brakes
IPC: B60T11/20
Filed: 1930-01-18
Abstract: 339,839. Ribis, G. P. G. Jan. 18, 1929, [Convention date]. Fluid-pressure; forcetransmitting mechanism.-Hydraulic transmission device particularly for brakes comprises a constant volume of liquid between the controlling pistons 4a and the actuated pistons 19, 20, the effort being multiplied or reduced according to the relative sizes of the piston 4<a> and pistons 19, 20. The pistons are contained in cylinders in a vessel filled with the liquid such as oil and intercommunicating by means of apertures 23. The piston 4<a> is connected by a rod 4 to the foot pedal and also by pivot 10 to levers 11, 12 which are connected by pivots 13, 14 and rods 15, 16 to the brakes and are also hinged by pivots 21, 22 to the piston rods 17, 18 of the pistons 19, 20. The bearings of the pivots 21, 22 are ovalled out to permit free movement of the parts. The apparatus allows of equalization of the braking pressure between the rods 15, 16.
Patent GB-1386715-A (GB)
Title: Liquid crystal display device
IPC: G02F1/1333
Filed: 1973-02-09
Abstract: 1386715 Matrix displays SUWA SEIKOSHA KK 9 Feb 1973 [16 Feb 1972] 01989/74 Divided out of 1386714 Heading G5C The subject-matter is the same as in Specification 1,386,714 but the claims are concerned with a liquid crystal display device having a shaped transparent insulating film partly covering a reflective electrode.
Patent GB-1027837-A (GB)
Title: Improvements in or relating to hydraulic power systems including a positive-displacement pump
Inventor: MITCHELL ALBERT HENRY
IPC: F04C14/26
Filed: 1962-01-19
Abstract: 1,027,837. Fluid-pressure servomotor systems. PLESSEY CO. Ltd. Jan 18,1963 [Jan 19,1962],No.2073/62. Heading G3P. [Also in Division F2] An unloading valve for a hydraulic pump 4 supplying an accumulator 1 through conduits 6, 8 and a non-return valve 9 is arranged to unload the pump in response to both accumulator pressure and rate of flow from the pump so that during starting no load is placed upon the pump until a certain speed of rotation is reached. This arrangement is particularly suitable for a pump driven by a ram-air turbine used for emergency purposes in an aircraft. The total discharge from the pump passes through an annular passage 20 to provide a pressure drop tending to move a valve member 10 towards the left against a spring 13. At low rates of flow the member 10 remains in the position shown and fluid is by-passed through passages 16,17 to the return line 3 to the pump, but as flow increases the member 10 moves to the left to close the passage 16 to cause the accumulator to be charged. Accumulator pressure is communicated by a conduit 24 to the end 23 of a pilot valve loaded by a spring 25 so that at a predetermined accumulator pressure the pilot valve is moved to connect a chamber 22, hitherto vented by a passage 29,to the conduit 24 to open the unloading valve. A portion 30 of the pilot valve of larger diameter than the end 23 is acted upon by the pressure in the chamber 22 so that the unloading valve does not reclose until accumulator pressure falls below that at which the valve opens.
Patent GB-176207-A (GB)
Title: A new or improved motor cycle leg guard or shield
IPC: B62J17/00
Filed: 1921-01-14
Abstract: 176,207. See, L. V. Jan. 14, 1921. Cooling motors, air defectors for.-A leg guard or shield for use in motor-cycles may be arranged to create a forced draught for the engine. The guard comprises two arms c pivoted at f to a bracket a which is mounted on the top bar b of the cycle, each arm carrying a spring-controlled roller blind d. The bracket has at each side a number of radiating grooves a<1> to. accommodate the arms in various positions, for example, a position in which the shields, when extended, create a forced draught; the shields are held extended by the engagement of rods e with the footboard or other part. In a modification, each blind is carried by a tube rotatably mounted on an inner tube carried by the arm c, and is adjustable laterally of the cycle.
Patent GB-765822-A (GB)
Title: Coin identifying circuit
IPC: G07F9/08
Filed: 1955-01-24
Abstract: 765,822. Automatic exchange systems. AUTOMATIC ELECTRIC LABORATORIES, Inc. Jan. 24, 1955 [Feb. 18, 1954], No. 2114/55. Class 40 (4). In a pay-station, the usual coin transmitter and gongs are replaced by an oscillator and coin-actuated levers which cause the oscillator to produce one or more bursts of current, the number of bursts and the frequency of the current together indicating the value of a coin deposited. As shown, a coin shoot arrangement for nickels, dimes, and quarters of the type described in U.S.A. Specification 2,235,648 is modified by replacing the gongs by levers 5, 6 and 7, of which 5 and 6 control a first switch, and 7 a second. It is assumed that the calling party at the pay-station has been connected with an operator via finder-selector link 24 and line recording trunk 25, and has been requested to insert forty cents. He then deposits a nickel which, in dropping down the left-hand shoot, strikes coin pad 6a, thus effecting the closure of springs 9 and 10 and the opening of springs 9 and 19. The latter removes the shunt from resistor 30 and the potential drop produced across this resistor by the current flow in the calling loop biases the collector 14 of the transistor oscillator with respect to the base, whereupon collector current flows. As a result the base becomes more negative with respect to the emitter 13 and emitter current flows, thereby increasing the collector current. The currents flowing thus increase rapidly until a saturation value of collector current is reached, whereafter the currents fall away rapidly, and condenser 11 discharges through resistor 12. The current in resistor 30 thus varies at audio frequency to provide a tone signal to the operator. The lever 6 is returned quickly to normal after the coin has struck coin pad 6a and the resulting opening of springs 9 and 10 terminates the operation of the oscillator immediately. Insertion of a dime in the centre shoot results in the pads 5a and 6a being struck in succession so that the oscillator produces two distinct bursts of tone, each of the same frequency as that produced by the nickel. A quarter, however, in dropping down the right-hand shoot strikes pad 7a so that the shunt is removed from resistor 30 by the opening of springs 21 and 17, and the discharge circuit of condenser 11 is completed through resistors 12 and 20 in series by the closure of springs 18 and 17. The oscillator therefore produces a single burst of tone, the frequency of which is different from that produced by the nickel and dime. In a modification the transistor oscillator is normally open-circuited and is connected across the line only when a coin is deposited.
Patent GB-1217121-A (GB)
Title: Method of manufacturing glass
IPC: C03C1/00
Filed: 1969-01-14
Abstract: 1,217,121. Refining glass. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 14 Jan., 1969 [17 Jan., 1968], No. 2176/69. Heading C1M. A method of manufacturing a borosilicate glass containing less than 10% by weight of alkali metal oxides, includes the step of refining the glass melt in a gas-fired or oil-fired furnace, wherein a molten metal which serves as a refining agent is present on the bottom of the furnace to reduce water vapour to hydrogen, the molten metal being one which will not reduce the oxides of the glass, and wherein the glass contains no oxides of Pb, As or Sb, and wherein the glass melt viscosity is less than 1000 poises. The molten metal may be Sn, Pb, Sb or Ni. In an example, a glass of composition SiO 2  64À7 (per cent by weight), B 2 O 3  23À3, Na 2 O 5À4, K 2 O 2À8, Al 2 O 3  3À8 was heated on molten tin for 5 hours at 1380 C., 3 hours at 1430 C., 2 hours at 1460 C., before cooling to 1250 C. at which temperature homogenous glass rods were drawn. Reference has been directed by the Comptroller to Specification 1,111,260.
Patent GB-208938-A (GB)
Title: Improvements in and relating to cleats or brackets for ships' cargo battens and the like
IPC: F16B2/10
Filed: 1923-01-24
Abstract: 208,938. Clarke, T., Christie, W., and Johnston, B. W. Jan. 24, 1923. Cargo batten fittings.-Cargo batten cleats of the kind having a hook which is passed through a hole in the supporting frame and a tail which engages the front edge of the frame to keep the cleat firmly in position when the batten is in place, are manufactured from a length of metal bar or rod which is bent into the required shape. In one form, the bracket a has a hook b passed through a hole c in the bulb angles frame d and a tail e which passes round the shank of the hook b and engages the front of the frame. In another example, the hook b, Fig. 3, is in the form of a loop and the tail e engages the front edge of the channel frame. In a further modification, the bracket a has a long hook b which passes through the flange c and a tail e which engages. the edge of the flange.
Patent GB-703956-A (GB)
Title: Improvements in or relating to chipping equipment for reducing branches and the like
Inventor: ASPLUNDH CARL HJALMAR
IPC: B02C21/02
Filed: 1952-01-28
Abstract: 703,956. Cutting-up wood. ASPLUNDH TREE EXPERT CO. Jan. 28, 1952, No. 2255/52. Class 145 (1) A wood chipping device comprises a housing arranged to support a cylindrical rotor for rotation with its axis in a horizontal position, a plurality of chipping knives attached to the cylindrical surface of the rotor and an inlet structure for feeding the material to the rotor, the structure having a channel with a substantially horizontal floor located at least as low as the horizontal tangent to the bottom of the cylindrical rotor. A delivery duct to change the direction of delivery of the chopped-up wood may be fitted and has a shape to give the wood an upward component to prevent clogging of the duct. The rotor 13 is mounted on an axle carrying a pulley 18 for connection to a source of power. The rotor revolves in the direction shown by arrow 21 and carries knives 22 peripherally spaced longitudinally. They are preferably held at an angle to the radial direction, and the outer edges are bevelled to lie approximately in a tangential plane. The blades are retained by wedges 24 and capscrews 25, and rods 26 controlled by screws 27 regulate the projection of the blades, the inner ends of which rest against the rods. The knives co-act with a fixed blade 28. The horizontal floor 31 is contained by a pivoted plate 32 urged by springs 36 towards the rotor blades and positioned by a pin 35 working in the slot 34. The device may be mounted in a truck or on a tractor.
Patent GB-544758-A (GB)
Title: Improvements in character-bearing elements for use in photographic type-composing machines
IPC: B41B15/12
Filed: 1941-02-19
Abstract: 544,758. Photographic type-composing. INTERTYPE, Ltd. Feb. 19, 1941, No. 2271. Convention date, July 5, 1940. [Class 98 (i)] A matrix for use in photographic type-composing, of the kind described in Specification 496,927, comprises a body 1 with a recess 5 holding a character-bearing plaque 6, and covers or shields over the exposed surfaces of the plaque, each having an aperture registering with the part of the plaque necessary for the exposure of the character. The surface of the plaque or film is thus shielded from contact with the fingers. In the form shown, the plaque is held between a bottom wall 10 of the recess and a retaining washer 12, the latter being secured in the recess by bending over a thin rib 12a, and both the wall 10 and the washer are provided with openings 13, 14 following the outlines of, but slightly larger than, the character on the plaque. Notches 9 in the body 1 receive locating lugs on the plaque and washer. For the smaller characters, the openings need not follow the outlines of tho character, but may be, for example, rectangular with rounded corners, or circular. The characters are located in the matrices in relation to two reference lines, one parallel to the long edge of the matrix and the other perpendicular to the first and at a given distance from the apex of a notch 7. Specification 14582/90, [Class 100], also is referred to.
Patent GB-266688-A (GB)
Title: Improvements in and relating to fuel pumps for internal combustion engines
IPC: F02M59/26
Filed: 1927-01-26
Abstract: 266,688. Junkers, H. Feb. 26, 1926, [Convention date.] Regulating delivery by opening by-passes and suction valves.-In a fuel pump for internal-combustion engines, the fuel is returned to the suction port 3 at a definite point in the delivery stroke by means of passages 6, 7, 10 in the plunger. In another form the fuel is returned to a by-pass port in the cylinder wall by ports 6, 7 in the plunger and a recess in the ,cylinder wall. In another form the fuel is bypassed through one or more slots in the cylinder wall controlled by an edge on the plunger. In another. form, the by-pass slot is in the plunger and is controlled by an edge on the cylinder wall. The slots may be distributed with respect to the port 3 so as to prevent unequal distribution of pressure between the plunger and cylinder. In another form, a reduced extension of the plunger controls a by-pass port in an extension of the cylinder. The moment of cut-off may be adjusted by providing the plunger with a recess 40 having an inclined edge 42 which controls communication between the port 3 and the pump barrel. By adjusting the plunger or barrel angularly, the moment at which the port 3 is open to the recess 40 is varied.
Patent GB-264022-A (GB)
Title: An anti-corrosive paint for iron, steelwork, and the like
IPC: C09D195/00
Filed: 1926-01-27
Abstract: 264,022. McMinn, S. A. Jan. 27, 1926. Paints.-A anticorrosive paint for iron, steel, &c. comprises oil gas tar and either Portland cement or silica. Resins and colours may be added.
Patent GB-1382345-A (GB)
Title: Thiazolo 3,4-alpha benzimidazole derivatives and process
IPC: C07D513/04
Filed: 1972-01-18
Abstract: 1382345 Thiazolo-[3,4-a]-benzimidazole derivatives E R SQUIBB & SONS Inc 18 Jan 1972 [21 Jan 1971] 2376/72 Heading C2C Novel compounds of the Formulae I and II wherein R<SP>1</SP> is halogen, hydroxy, nitro, alkyl, aryl, aryl-alkyl, alkoxy, cyano, thiocyano, arylamino, alkylamino, or R 2 CONH-; R<SP>2</SP> is hydrogen, C 1-5  alkyl, halo-C 1-5  alkyl, aryl, aryl alkyl; R<SP>3</SP> is any of R<SP>2</SP>, alkylamino, arylamino, aryl-alkylamino, or R<SP>2</SP> CONH-, R<SP>4</SP> is any of R<SP>2</SP>, alkoxy or aryloxy; R<SP>5</SP> is any of R<SP>2</SP>, alkylamino, arylamino, aryl-alkylamino, acylamino (NHCOR<SP>2</SP>), alkoxy or aryloxy;, n is 0, 1 or 2# and pharmaceutically acceptable salts thereof may be prepared by (a) for I, by reaction of a compound III with an acid halide R<SP>2</SP>COX where X is chlorine or bromine, an acid anhydride (R<SP>2</SP>CO) 2 X or an isocyanate R<SP>6</SP>NCO where R<SP>6</SP> is C 1-5 -alkyl, aryl, acyl (R<SP>2</SP>CO) or aryl-C 1-7  alkyl; (b) for II in which R<SP>4</SP> and R<SP>5</SP> are identical by acylation of a compound III with R<SP>2</SP>COX or (R<SP>2</SP>CO) 2 O or reaction of III with a halocarbonic acid R<SP>5</SP>COX where R<SP>5</SP> is alkoxy or aryloxy and X is as above or (c) for II in which R 4  and R 5  are different, reacting a compound I where in R<SP>3</SP> is alkylamino, arylamino, or aryl alkylamino or acylamino (R 2 CONH) with an acylating agent R<SP>4</SP>COX or (R<SP>4</SP>CO) 2 O where R<SP>4</SP> is as R<SP>2</SP> above or reacting a compound I in which R<SP>3</SP> is acylamino with a halocarbonic acid R<SP>5</SP>COX as in (b). 1 - Imino - 1H,3H - thiazolo - [3, 4 - a] - benzimidazole may be prepared by reaction of 2- chloromethyl-benzimidazole with ammonium thiocyanate. Pharmaceutical compositions of the compounds I and II show parasiticide and antiinflammatory activity when administered orally or topically. The compounds are also rodenticides.
Patent GB-217947-A (GB)
Title: Improvements in or relating to heating apparatus
IPC: H05B3/62
Filed: 1923-01-26
Abstract: 217,947. Hancock, L. J., and Hancock, T. R. Jan. 26, 1923. Resistances, selfsupporting; carbon in inert atmosphere. -Heating apparatus having constituent members liable to deterioration by contact with air is provided with a definite opening for ingress of air to the space around said members, the opening being constructed and arranged so that the air is caused to come into contact with a substance with which it reacts to produce a gas which will have no action on the surface exposed to it. A muffle furnace of the type described in Specification 190,222 is provided with a tube 10, containing carbon granules 11. The tube has an air inlet 7 and an outlet 14 from which the gas formed therein passes to the space around the carbon resistance rods.
Patent GB-168817-A (GB)
Title: Improved method of repairing knitted goods
IPC: D04B17/04
Filed: 1921-01-18
Abstract: 168,817. Pogson, J. W. Jan. 18, 1921. Grant of Patent refused. Darning; hand sewing-tools. - A latch-needle fitted with a handle is used to loop together, as shown, the cross threads of a " ladder " in knitted fabrics. The needle is provided with a removable clamp-proof cover.
Patent GB-524231-A (GB)
Title: Compressed air or motive gas plant
IPC: F02C5/08
Filed: 1939-01-24
Abstract: 524,231. Regulating. PESCARA, R. P. Jan. 24, 1939, No. 2493. Convention date, Jan. 28, 1938. [Class 7 (vi)] [Also in Group XXVI] In a free-piston internal-combustion compressor, the pressure of the scavenging air may be controlled by a piston 39 forming a movable wall of the scavenging-air chamber 33, which when large excess pressure occurs, uncovers a port 41 to allow the air to pass directly into the engine supply conduit 34. A similar device may be applied to the supply of the compressors from a pressure source.