baber/WOPTO huggingface dataset:
Patent GB-518580-A (GB)
Title: Improvements in or relating to cathode ray tubes
IPC: H01J29/62
Filed: 1938-08-26
Abstract: 518,580. Cathode-ray tubes. NICOLL, F. H. Aug. 26, 1938, No. 25075. [Class 39 (i)] In a cathode-ray tube such as described in Specification 431,327, wherein the beam is defined-prior to final focusing on to the screen -by an apertured diaphragm 8 arranged near the focusing lens, such secondary electrons as are generated by the impact of the beam on the diaphragm are prevented from passing to the screen by an electrode 6a at a potential slightly negative to that of the anode 6 in front of the diaphragm. The diaphragm and negative electrode 6a are shown integral, but they may be separate or the diaphragm may carry the negative bias. Potentials are given.
Patent GB-731777-A (GB)
Title: A retrospective viewing apparatus
IPC: G02B23/08
Filed: 1953-09-10
Abstract: 731,777. Periscopes. GUNDLACH, R. Sept. 10, 1953, No. 25080/53. Class 97 (1). Apparatus by which a person may obtain a view behind him comprises three reflectors arranged one above the other, the first reflector receiving light from the rear and reflecting it to an erecting reflector when it reaches the eye by way of a third reflector. By using the device in conjunction with a plane mirror placed behind the observer the latter may obtain a view of his own back. The device is particularly intended for use by hairdressers and dressmakers. As shown, the device comprises mirrors 3, 2 and 1 arranged as shown in a casing and reflecting a light beam as from a plane mirror 4 in the path b, c, d to reach the observer's eye. The auxiliary mirror 4 may be attached to the apparatus which may be supported in the hand by a handle 33, supported in a sliding tubular support mounted in a universal joint on the ceiling, similarly slidably supported on a carriage movable on wheels or supported in a cupboard or other article of furniture.
Patent GB-480653-A (GB)
Title: Improvements in and relating to central-heating boilers
IPC: F24H1/34
Filed: 1937-09-16
Abstract: 480,653. Hot-water boilers. HOLLESEN, H. F. M. Sept. 16, 1937, No. 25164. [Class 64 (i)] In a central-heating boiler having an outer fuel hopper 5 with an opening 6 leading to a water-jacketed combustion chamber which, by means of an opening above a partition wall 11 communicates with smoke flues 2 running longitudinally between water-filled units, the units 16 are shaped as rectangles from which a corner is removed by an oblique cut, so that the cross-section of the flue is reduced at right-angles to the direction of the smoke. The flues may carry flanges to give the smoke a zigzag path. The units 16 consist of two parallel plates welded along their edges to a. shell which, where the units are to be welded together, is thickened for transfer of heat. The spaces 23 formed by the cutting off of the corners of the units is a triangular prism bounded at the front by the water-filled partition 11, at the rear by the shell 19 of the units, and has an opening at the bottom with a damper 24 for entry of secondary air, which is directed through holes 26 in the wall 11. A water-filled fire arch 9 is spaced above the aperture 6, and the grate 7, which rests on transverse water tubes 8, is spaced below the aperture. Water enters the units at 30 near the smoke outlet 22 and is withdrawn at a pipe 22. The units are connected to the front boiler by pipes 33, 36. A refractory plate 15 is placed above the wall 11. Secondary air enters by openings 37 in the side walls.
Patent GB-1065870-A (GB)
Title: Seismic data processing
IPC: G01V1/36
Filed: 1964-06-18
Abstract: 1,065,870. Geophysical prospecting. TEXAS INSTRUMENTS Inc. June 18, 1964 [June 21 1963], No. 25308/64. Heading H4D. [Also in Division G1] In a method for minimizing reverberation effects in a seismic signal, particularly in a marine seismogram, the signal is processed by passing it through a delay line filter having an impulse time response which is approximately the inverse of the reverberation effect. In the embodiment shown in Fig. 2, seismic disturbances arising from the detonation of a shot 1 are detected by a linear array of seismometers whose outputs may be processed so as to provide a single noise-free signal f(t). The signal f(t) is fed to a delay line filter (5) (Fig. 3), which may be a magnetic drum type or a series of electrical delay circuits, having M + 1 outputs at equal time intervals. The signals from these outputs have their amplitudes multiplied by respective filter weighting factors # and are then combined in a summing network (6), such as a differential summing amplifier, whose output constitutes the processed signal. The required impulse time response of the filter (5) is obtained by adjustment of potentiometers (7). The values of the weighting factors are computed by recording the noise-free signal f(t) on magnetic tape and feeding it to an arrangement 3 which generates the autocorrelation function of f(t). Such an arrangement may comprise an analogue or digital computer using a sampling method to calculate a set of M + 1 auto-correlation function coefficients for the signal f(t). The weighting factors are uniquely defined in terms of the auto-correlation function coefficients by a matrix equation, and are calculated by a digital computer 4 using the auto-correlation function coefficients as input data. The power/frequency response of the delay line filter (5) is stated to be approximately inversely proportional to the power spectrum of the seismic signal f(t) and the weighting factors # may therefore be used to estimate the power spectrum of the signal f(t). Phase errors introduced into the seismic signal f(t) by the apparatus may be compensated for by the use of a second filter in front of the auto-correlation function generator 3. A detailed mathematical treatment of the autocorrelation principle, and numerical examples of auto-correlation function coefficients and their associated filter weighting factors #, are given. The mathematical relationship between the coefficients and their weighting factors is claimed.
Patent GB-1019203-A (GB)
Title: Jet nozzle
Inventor: PIKE MALCOLM ROY
IPC: B64C29/00
Filed: 1964-06-18
Abstract: 1,019,203. Deflecting propulsive jets. ROLLSROYCE Ltd. June 18, 1964, No. 25312/64. Heading B7G. [Also in Division F1] A jet-propulsion nozzle 16 has apertures 26 which are selectively supplied with compressed air to deflect the propulsion jet. The apertures 26 are arranged in four or two sets around the nozzle circumference, Figs. 3, 4 respectively (not shown). The profile of the nozzle 16 is such that the supply of compressed air to any one set of apertures 26 reduces the effective convergence of the nozzle in the region of that set and thus causes a deflection of the propulsive jet in that region from 21 to 27, i.e. towards the set. The nozzle may be of circular or rectangular crosssection.
Patent GB-262221-A (GB)
Title: Improvements in or relating to fillets for nap raising machines
IPC: D06C11/00
Filed: 1925-10-10
Abstract: 262,221. Baumann, E., (trading as Baumann, H. F.), and Walker, C. Oct. 10, 1925. Cards, wire.-A fillet for use in nap-raising machines is provided with teeth having flat ends with plain knife edges c set transversely to the working, direction. The teeth may be used conjointly with ordinary pointed teeth. Reference has been directed by the Comptroller to Specification 111,744.
Patent GB-303040-A (GB)
Title: Improvements in and relating to the control of electrically operated switches
IPC: B60L15/12
Filed: 1927-09-26
Abstract: 303,040. British Thomson-Houston Co., Ltd., and Hastings, H. C. Sept. 26, 1927. Addition to 233,438. Master control, electromagnetic. -Relays 104, 105 which when energized alternately by a voluntary action, e.g. by the driver of a train, carry on successive closure of a set of electromgnetic contractors for accelerating a motor M independently of a two-wire current-limit notching device P, P<1> are connected to additional mastercontroller fingers e<1>, f<1> instead of the separate two-way switch described in the parent Specification. The object is to permit the driver to effect non-automatic notching by to-and-fro movement of the master-controller.
Patent GB-669078-A (GB)
Title: Improved stator for dynamo electric machines and methods of making the same
IPC: H02K1/18
Filed: 1949-10-04
Abstract: 669,078. Making dynamo-e(ectric machines. GENERAL MOTORS CORPORATION. Oct. 4, 1949 [Oct. 27, 1948], No. 25437/49. Classes 83 (ii) and 83 (iv). [Also in Group XXXV] Welding.-A dynamo-electric machine stator comprises laminations 35 held together by channelled plates 50 having spaced-apart sharp edges 52 placed longitudinally around the lamination periphery to which they are welded by the fusion of the plate edges 52 by passing welding current through the plates 50. The latter are formed by bending inwardly as at 51 one pair of opposite edges to form a channel with parallel sharp edges 52 adapted to contact the lamination periphery astride notches 38 through which the end-frame connecting bolts 39, Fig. 1 (not shown), pass. Fig. 2 shows a plan of one of the plates 50 having the other pair of opposite edges indented inwardly as at 53 to form internal shoulders 54 to clamp the laminations 35 together, the distance between the shoulders 54 being equal to the width of the lamination stack.
Patent GB-1426503-A (GB)
Title: Heat exchanger unit
IPC: F24F1/02
Filed: 1973-05-29
Abstract: 1426503 Air conditioning WESTINGHOUSE ELECTRIC CORP 29 May 1973 [5 June 1972] 25471/73 Heading F4V A condenser unit for use in a refrigeration system which includes an evaporator within a housing 2, comprises a housing with a wall having an air inlet grille 6 and outlet grilles 7, 8, a centrifugal fan having a scroll casing 18 with at least two outlets, a water collecting pan 10 and a duct 32 linking the pan 10 and an air inlet 45 of the fan, whereby any water in the pan 10 is drawn through the duet 32, atomized by the fan impeller 17 and discharged through the scroll casing outlets towards end walls 3, 4 of the housing, so that large water drops will be separated from the airflows and returned to the pan 10. The pan 10 collects condensate from the evaporator and rain water. Condensate is also passed directly to the fan inlet 45 through a duct (38, Fig. 2). A refrigerant compressor 12 is located inside the housing to be cooled by airflow from the fan.
Patent GB-506162-A (GB)
Title: Improvements in railway signalling systems
IPC: B61L1/16
Filed: 1937-09-20
Abstract: 506,162. Railway signalling systems. SIEMENS & GENERAL ELECTRIC RAILWAY SIGNAL CO., Ltd., and MOTT. J. E. Sept. 20, 1937, No. 25484. [Class 105] A railway signalling system in which the signal for a section is controlled by axlecounting apparatus and additionally by a track (treadle) relay for the section, the axlecounting apparatus and the track (treadle) relay being effective independently to put the signal to danger,'is arranged so that the signal is again cleared only if the track relay for the section responded when the train entered. The entering train opens a treadle contact to drop the track relay A and when the axle counter contact 3 has moved to the off-normal contact 5 an auxiliary relay B is picked up over a back contact A2 of the relay A and a back contact C4 of the signal relay (' which was dropped when front contact Al opened. The auxiliary relay B continues energized over its own front contact B2. The signal'relay C is picked up over front contacts A1, B1 when the axle-counter contact 3 is returned to the normal contact 4; it will be seen that the presence of front contact B 1 requires the track relay A to have dropped and the axle-counter to have moved from normal before the signal can again be cleared. The signal relay C continues energized over axle-counter normal contact 3, 4, its own front contact C3, a back contact B3 of the auxiliary relay B (de-energized when back contact C4 opens) and front contact A1.
Patent GB-722426-A (GB)
Title: Process for the production of selenium rectifiers
IPC: H01L21/06
Filed: 1951-10-31
Abstract: 722,426. Dry plate rectifiers. SIEMENSSCHUCKERTWERKE AKT.-GES. Oct. 31, 1951 [Oct. 1, 1948], No. 25495/51. Class 37. [Also in Group II] A process for producing dry plate rectifier columns comprises (i) building up simultaneously and in spiral staircase fashion electrode and semi-conductive layers on a metal base; (ii) suitably cutting this intermediate product to obtain rectifier columns. The intermediate product from step (i) has not the character of a rectifier due to unavoidable merging of opposing electrode layers producing a short-circuit and the step of cutting (ii) breaks the short-circuit. In the embodiment shown a rotating metal disc 1 receives spirally deposited layers from simultaneously operating vaporizers 3, 4, 5 with 3 consisting of an incandescent nickel wire and 4 containing selenium and 5 containing cadmium or tin-cadmium. Preferably the process takes place in a vacuum container with also the metal disc heated to more than 100‹ C. in order that the selenium may be converted into metallic selenium. The layers may be applied in such manner that the edge of each succeeding layer is set back from the edge of the layer below it. The required rectifier columns are obtained by selective axial cutting. It is stated that the layers may be electrolytically deposited.
Patent GB-852538-A (GB)
Title: Process for enriching natural phosphates
Inventor: SAINT-CHAMANT HENRI DE
IPC: C05B11/02
Filed: 1957-08-13
Abstract: Natural phosphate ores are enriched by reacting them at a temperature not above 50 DEG C. with a solution containing not more than 250 grams of phosphoric acid per litre.  The acid is partly retained by the ore, and the remainder dissolves alkaline - earth metals present. The working conditions are such that the total P2O5 content of the solution which flows away from the ore is the same as that of the initial phosphoric acid solution, the P2O5 which has been lost by being retained by the ore having been replaced by P2O5 dissolved from the ore.  The issuing solution, which consists of alkaline-earth-metal phosphates is treated to recover phosphoric acid, for example by adding an acid which forms insoluble salts with the alkaline-earth metals present, and the phosphoric acid is then employed to enrich further quantities of ore.  In examples, the phosphate ore is arranged on a band filter, and the phosphoric acid solution is sucked through the ore and filter.  Phosphoric acid is regenerated from the issuing solution by precipitating the calcium present as calcium sulphate, using sulphuric acid.
Patent GB-1343157-A (GB)
Title: Writing and manifolding material
IPC: G01N31/22
Filed: 1971-04-19
Abstract: 1343157 Pressure-sensitive record sheet assembly GUNTHER WAGNER PELIKANWERKE GmbH 19 April 1971 [11 July 1970] 25523/71 Heading D2B  A pressure-sensitive record sheet assembly comprising a first sheet having a layer of a hydrophilic binder containing as a colourforming agent a spiro dipyran and a second sheet having a layer of a hydrophilic binder containing as a colour-developing agent a clay treated with an acid or an acid-reacting substance, is characterised in that the layer of hydrophilic binder on the first sheet also contains a polymeric material derived by drying an acid-reacting aqueous dispersion of a synthetic polymeric material having a pH of 5-6. The latter may comprise a vinyl chloride or vinyl acetate copolymer or polyvinylacetate or polyvinyl propionate. The assembly may also include an intermediate sheet having appropriate colour-forming and colour-developing layers on each of its faces.
Patent GB-1263914-A (GB)
Title: Improvements in or relating to a method of and apparatus for twisting together a plurality of elongated flexible elements
Inventor: DAKER HORACE HERBERT
IPC: D07B3/10
Filed: 1968-05-28
Abstract: 1,263,914. Twisting flexible elements together. BRITISH INSULATED CALLENDER'S CABLES Ltd. 27 May, 1969 [28 May, 1968], No. 25535/68. Addition to 1,209,484. Heading D1T. A method of twisting together a plurality of flexible elements 1, Fig. 1, comprises drawing the elements from stationary supply devices 2, passing them through a die 4 to form a bunch 5 and advancing and twisting the bunch so formed by stationary drawing means 6 having at least one endless gripping surface which moves in a closed path and engages the bunch over a part of the closed path which is obliquely inclined with respect to the axis of the bunch 5, and feeding the bunch into a double-twist bunching machine 8 whose flyer 9 is driven in the same direction as but at a speed less than the speed of rotation of the longiudinally advancing bunch 5 to the extent that at least a substantial proportion of, but not substantially more than, the twist present in the finished product taken up at 12 in the bunching machine 8 is put in prior to the entry of the bunch into the bunching machine. In Figs. 2 and 3 (not shown) the endless gripping surface is a skew roll (15) arranged obliquely with respect to the axis of the bunch 5, the skew roll (15) being driven by a motor 16. The bunch 5 may be supported by one or more backing rolls (17) skewed at the same angle as the skew roll (15). There may be means (18) for driving each backing roll. The peripheral surface of each roll may be elastically yieldable. In Fig. 4 the endless gripping surface is a belt 19 having at least one helical turn around and in contact with the bunch 5. The belt is driven by a motor 25 and carries a jockey pulley 26. In Fig. 5 (not shown) the bunch 5 passes between two endless belts. Pressure pads (29, 30) force the belts into engagement with the bunch 5 and at least one of the belts is driven. The belts are skewed relatively to the direction of motion of the bunch 5.
Patent GB-703510-A (GB)
Title: Improvement in production of unsaturated aldehydes
Filed: 1951-11-01
Abstract: Unsaturated aldehydes are obtained by reacting a saturated aliphatic aldehyde with a 1-alkenyl alkyl ether to form a substituted 1 : 3-dioxane, hydrolyzing said dioxane and recovering from the resulting hydrolyzed mixture an unsaturated aldehyde having a greater number of carbon atoms than the starting saturated aldehyde.  Saturated aldehydes, such as acetaldehyde, propionaldehyde, butyraldehyde, hexaldehyde or 2-ethyl hexaaldehyde may be reacted with vinyl alkyl ethers such as vinyl ethers of methanol, ethanol propanol or butanol or with 1-alkenyl alkyl ethers, such as 1-propenyl alkyl ether or 1-butenyl alkyl ether.  The reaction is effected under anhydrous conditions in the presence of a Friedel-Crafts catalyst, e.g. boron trifluoride, aluminium chloride, zinc chloride or phosphotungstic acid.
Patent GB-240019-A (GB)
Title: Improvements in adjustable electric condensers
IPC: H01G5/12
Filed: 1924-10-27
Abstract: 240,019. Dubilier Condenser Co. (1921), Ltd., (Edenburg, L.). Oct. 27, 1924. Condensers.-The fixed electrode of a variable condenser comprises a band or bands of conducting material mounted on the inside face of a casing, and the movable electrode comprises a similar band or bands mounted on the outside face of a member movable within the casing. In one construction, Fig. 2, the bands 8, 9 are in the form of helical strips, and the movable member 5 is rotatable, but is held against axial movement, in the casing 1. In a modification, the shaft carrying the movable member has a screwthreaded engagement with the closure plate at one end of the casing, so that the member 5 moves both axially and rotatively to adjust the relative positions of the strips. In another form, Fig. 8, the helical strips are replaced by a series of separate circular bands 8, 9, the capacity being varied by axial adjustment of the member 5.
Patent GB-1200554-A (GB)
Title: Pie pan
IPC: A21B3/13
Filed: 1968-05-28
Abstract: 1,200,554. Pie pan. ALUMINUM CO. OF AMERICA. 28 May, 1968 [21 June, 1967], No. 25573/68. Heading A4A. A pie pan is provided with a plurality of downwardly embossed V-shaped grooves in the bottom extending from the centre area to the perimeter of the bottom when the pan is circular and extending continuously across the bottom of the pan when the pan is square or rectangular so as to communicate with said striae, the included angle between the sides of each of said grooves being no less than 25 degrees and no greater than 135 degrees. A V-shaped groove may also be embossed around the perimeter of the bottom.
Patent GB-815419-A (GB)
Title: An electrode holder for welding
IPC: B23K9/28
Filed: 1957-08-14
Abstract: 815,419. Welding electrode holders. BATSTRA, J. B. Aug. 14, 1957, No. 25674/57. Class 39(3) A welding electrode holder comprises two pivotally connected jaws one of which has an open longitudinal slot between two lateral cheeks for guiding the other jaw, which is urged by a spring into contact with the bottom of the slot. As shown, a holder comprises a fixed jaw 1 consisting of a copper rod having at one end connecting means for a supply cable 3 and at the other end a longitudinal slot 4 with lateral cheeks 5 and 6, and a movable jaw 2 which is located inside the slot 4 and pivotally secured to the fixed jaw by a pin 7, its rear end being formed as a lever handle 8 sheathed with insulating material. A compression spring 9 urges the jaw 2 against the bottom of the slot 4. The cheek 6 has three holes 11 for the reception of electrodes of different sizes, each hole being partly located below the level of the bottom of the slot 4 which is provided with transverse grooves 12 forming extensions of the holes. The opposite cheek 5 has corresponding aligned holes 13 penetrating only part of the wall thickness. The rear end of the holder has an insulating sleeve 14 and at the forward end both the jaws are embraced by an insulating sleeve 15 having a slot 16 where the holes 11 are located. In a modification (Fig. 5, not shown), each cheek has two sets of holes, each set being staggered and arranged at different angles with respect to the longitudinal axis of holder, thus allowing an electrode to be held in two different positions.
Patent GB-1413780-A (GB)
Title: Falme-retardant poly-aryloxy-phosphazene polymers
IPC: C08G79/02
Filed: 1974-06-10
Abstract: 1413780 Poly(aryloxyphosphazenes) HORIZONS RESEARCH Inc 10 June 1974 [11 June 1973] 25713/74 Heading C3R Poly(aryloxyphosphazene)polymers consist of randomly repeating units of formulµ where R<SP>1</SP> and R<SP>2</SP> are different aryl groups, R<SP>1</SP> being phenyl, 3- or 4-substituted phenyl, 3,4- or 3,5-disubstituted phenyl or 3,4,5-trisubstituted phenyl, the substitutents being alkyl, alkoxy, phenyl, phenoxy, chlorine or bromine, provided there is not more than one halogen substituent, and R<SP>2</SP> is a halogenated phenyl group of formula XC 6 H 4 -, X 2 C 6 H 3 -, 2,4,5-Cl 3 C 6 H 2 -, 2,3,4,6-Cl 4 C 6 H- or C 6 Cl 5 - where X is Cl or Br provided Br is present only in the 3-, 4- or 5- position. There may be from 20 to 50,000 units in the chain and the ratio of R<SP>1</SP> to R<SP>2</SP> groups may be from 95 : 5 to 5 : 95. The polymers are obtained by reacting poly(dichlorophosphazenes) first with one aryloxide salt and then with another aryloxide salt or by reacting with a mixture of aryloxide salts. Examples are given. Uses.-Films, fibres and shaped articles with flame-retardant properties.