baber/WOPTO huggingface dataset:
Patent GB-886748-A (GB)
Title: Improvements in or relating to the manufacture of ammonium sulphate
Inventor: SYERS ROLAND
IPC: C01C1/244
Filed: 1957-04-18
Abstract: Ammonium sulphate is prepared by intimately admixing.  Ammonium carbonate and calcium sulphate hemihydrate plaster with an amount of water sufficient to set the plaster and the mixture, on setting, is allowed to stand to effect the double decomposition of the components in the solid phase.  The set mass may then be heated to remove residual water and also to decompose residual ammonium carbonate. Pure ammonium sulphate is obtained by macerating the set mass with water or ammonium sulphate liquor resulting from a previous run and separaitng the ammonium sulphate crystals from the calcium carbonate and sulphate. Calcium carbonate and sulphate are thereafter filtered from the ammonium sulphate liquor and the carbonate may be used as agricultural limestone.  The residual ammonium sulphate liquor is boiled to decompose ammonium carbonate contained therein and is subsequently recycled for use in maceration of further quantities of the set mass.  Ammonia vapour and carbon dioxide liberated during heating the set mass or of the ammonium sulphate liquor are recombined to form ammonium carbonate which is recycled as starting material.
Patent GB-1033678-A (GB)
Title: Method and apparatus for producing blanks from sheet or strip material
IPC: B23D33/10
Filed: 1963-04-01
Abstract: 1,033,678. Shearing. A HINRICHS, [trading as WILHELMSBURGER MASCHINENFABRIK HINRICHS & SOHN]. April 1, 1963 [April 10, 1962], No. 12794/63. Heading B3W. A device for cutting pieces of various predetermined lengths from a continuous strip comprises a shear, a reciprocating gripper and an adjustable limit stop for the idle return stroke of the gripper, wherein the shear is rotatable in the plane of the strip, a plurality of stops are provided and the shear and the limit stops are adapted to be controlled hydraulically according to a predetermined sequence. Strip 4 from a supply reel 2, Fig 1 (not shown), passes through a looping pit controlled by a photo-electric cell to a feed device 5 which comprises a double-acting hydraulic cylinder 9 operating a reciprocating gripper 13. The gripper is closed on to the strip by hydraulic cylinders 13<SP>1</SP>. A similar stationary gripper 16 prevents retrograde movement of the strip. The forward movement of the gripper is limited by a fixed stop 14 and the return movement, by one of a plurality of adjustable stops 15. The stops 15 are each carried by the piston 18 of an hydraulic cylinder 17, the stroke of which is limited by a spindle 19 which projects through the rear of the cylinder and carries a hand wheel 20 by which the stroke can be adjusted. The reciprocating motion of the gripper 13 is controlled by an hydraulic circuit operated by electro-magnetic valves so that each time the gripper contacts the stop 14 or a stop 15, its motion is reversed, the jaws of the grippers 13 and 16 are actuated and the next stop 15 is moved to its operative position. The control circuit also operates a shear 6 when the gripper 13 reaches the stop 14 and the strip is stationary. The device is described with particular reference to the manufacture of transformer laminations, and in order to produce angled cuts across the strip the shear is pivoted on an axis normal to the surface of the strip and is rotated on this axis by two hydraulic cylinders 23 and 24 in which pistons 25, 26, 27 and 28 are moved, and which are connected to the shear by rods 29 and 30 to move it between the positions I, II and III. The pivotal movement of the shear is synchronized with the selection of the stops 15.
Patent GB-423659-A (GB)
Title: An improved tuned silencer for an air intake for an engine
IPC: F02M35/12
Filed: 1933-05-02
Abstract: 423,659. Air-intake silencers. ROBOTHAM, W. A., Park Leys, Duffield, and WHYMAN, G. H., Mashobra, Mostyn Avenue, Littleover, both near Derby. May 2, 1933, No. 12799. [Class 7 (ii)] Two frequencies or bands of frequencies are silenced by two resonator chambers in communication with the intake passage, but not connected with one another otherwise. The air intake to a carburetter a is by way of pipes e, b at right-angles to one another. The pipe e is surrounded by a pipe c of large diameter which forms an annular low-frequency chamber e<1> and is prolonged to form also a highfrequency chamber d<2> situated outside the band in the pipe and separated from the air intake passage by a diaphragm d<1>. The chambers e<1>, d<1> communicate with the air passage by way of holes g, d<3> respectively, which holes are located substantially at the bend in the air passage and also at a nodal point of the wave to be damped. The Complete and Provisional Specifications contain dimensions of parts for silencing frequency bands of 80 to 110, and 130 to 160.
Patent GB-413840-A (GB)
Title: Improvements in and relating to electrical "pick-ups" for gramophones
IPC: H04R3/08
Filed: 1933-05-02
Abstract: 413,840. Gramophone pick-ups. CAMP, H. J., 17, Meadway, Bush Hill Park, Enfield, Middlesex, and WATSON, C., 124, The Ridgeway, Chingford, London. May 2, 1933, No. 12810. [Class 40 (iv).] A gramophone pick-up comprising an armature 10 pivotally mounted between polepieces 6 and surrounded by a coil 13 has the coil tapped, the tappings being brought out to contact studs 20 on the base plate 7, a switch arm 18 pivotally mounted on the base plate co-operating with the studs 20 to vary the impedance of the coil. If desired, the switch arm may be mounted on the interior of the base plate and arranged so that its outer end extends through a slot therein. According to further modifications, the adjustable switching arrangement may be mounted in the bracket carrying the pick-up arm or in the arm itself.
Patent GB-709701-A (GB)
Title: Improvements in or relating to endless belt conveyors
Inventor: MITCHELL FREDERICK GILBERT
IPC: B65G15/40
Filed: 1948-05-10
Abstract: 709,701. Endless belt conveyers. BULK PRODUCTS, Ltd. June 9, 1949 [May 10, 1948], No. 12830/48. Class 78 (1) [Also in Group XXV] An endless flexible belt conveyer comprises a flat flexible strip constituted as a single piece of substantially uniform flexibility interlocking means of the clasp fastener type on the longitudinal edges of the strip, sliders operable near the loading and discharge ends respectively of the conveyer for closing and opening the interlocking means and groups of rollers which are spaced apart in the length of the conveyer to support the belt and whereof the rollers of each group are arranged in a circumferential series defining a trough to the shape of which the belt will be flexed. The conveyer comprises an endless belt 30 mounted at its ends on rollers 31, 32 located at the loading and discharge ends. At the loading end, the belt passes over a group of idler rollers 33 defining a trough the conveyer being loaded by a chute 34. A closing slide, as described in Specification 709,702, [Group XXV], at the position of the idler rollers closes the trough. A group of idlers 35 along the length of the run allow the conveyer to flatten out. At the discharge end. the upper run passes over a group of trough defining rollers 36 where an opening slider operates to open the belt as it passes over a guide roller 32 where discharge takes place. An alternative form of slide is shown in Fig. 5, comprising a central rib 44 with two depending flanges with a beaded end 50 and channel 51 respectively which engage the channel 41 and rib 43 of the conveyer. Various other interlocking arrangements for the edges are described; as shown in Fig. 14, the surface 30 is maintained flat by engaging a projection 43 in the channel 41.
Patent GB-1269432-A (GB)
Title: Opto-graphical memory and digitalized control system for precision machining
Inventor: VOROS GEZA VON
IPC: G06K11/02
Filed: 1970-03-17
Abstract: 1,269,432. Machine-tool control. OPTOGRAPHICS Inc. March 17, 1970, No. 12864/70. Heading G3N. A machine-tool control system includes an optical head for reading and following an edge. The head comprises four or more light fibres or sensitive chips forming an array which delivers signals for controlling stepping motors coupled to the head, and also for controlling the position of a secondary system which may be an actual machine tool or a writing head. As shown in Fig. 2, the system comprises a table 30, and optical system 25 for reading a master print 31 and thereby controlling the position of a workpiece 27 with respect to a tool 28. The print 31 carries an illuminated line drawing 32 which is followed by a head 34, the four sensors in which deliver a digital signal to a transistor logic circuit 40, the output from which controls stepping motors 36, 37, and similar devices for positioning the workpiece support 26. The digital signal is formed by the output of each sensor being compared with that of a fifth sensor arranged to receive background light, Figs. 3-6 (not shown). A similar arrangement may be used to produce a master print from data available in numerical form or a rough drawing. In such a system, the table 30 is replaced by a function generator, Fig. 12 (not shown), comprising straight edge and curved templates which are positioned by an operator and then read by an optical head as before. The output is used to control a pen or the like which inscribes an accurate line drawing on a suitable material. The system may be modified to operate in three dimensions.
Patent GB-1465547-A (GB)
Title: Focusing ultrasonic system
IPC: G10K11/32
Filed: 1974-03-22
Abstract: 1465547 Focusing ultrasonic system COMMISSARIATE A L'ENERGIE ATOMIQUE 22 March 1974 [2 April 1973] 12888/74 Heading G1G [Also in Divisions H3-5] An ultrasonic system for focusing an ultrasonic beam in a material to be tested is described, and is stated to be operable from any angle of incidence. The system comprises at least one transducer which forms part of an active surface formed from a portion of a surface of revolution within an ambient medium and which has an axis perpendicular to the material surface. The focal point within the material is defined with respect to two orthogonal planes passing through the active surface and which pass through a particular active surface point and a point of impact on the material surface of the transmitted beam from the active surface point. The shape of the surface of revolution is such that the ratio of the distance between point of impact and the focal point in the material of a beam transmitted in the first plane and the corresponding distance to the focal point of a beam in the orthogonal plane is defined to be   cos#1 1 <SP>2</SP>/cos#1 2 where #1 1  is the angle of beam incidence,   #1 2  is its angle of refraction, and the focal points are those points at which the beam would be focused if the ambient medium and the material to be tested were identical. In Fig. 3, the transducer emitting surface S' is constituted by part of surface S', is toric in shape, and is defined by the cylindrical co-ordinate relationships: with respect to-the desired point of focus A, where the origin O is situated on the surface of media M2, V is the wave velocity ratio, t is the cosine of the angle of refraction, P 0  is the point of intersection of the surface S and the ZZ' axis. In Fig. 4, points F 1 , F 2  show the points of focus, in each orthogonal plane by the curve cut in the active surface I by each respective plane, produced by waves propagating in M 1  only, and point A shows the actual point of focus on the insertion of the test piece M 2  into M 1 . The flaw detection system, which may be used e.g. for testing weld seams may comprise a transducer e.g. a Piezo-electric pellet having an active surface shaped according to equations (1) and (2), or a focusing lens L; Fig. 6, or focusing mirror N, Fig. 7 may be used together with a flat transducer surface.
Patent GB-1508285-A (GB)
Title: X-ray system with electrophoretic imaging
IPC: G02F1/167
Filed: 1976-03-31
Abstract: 1508285 Radiography XONICS Inc 31 March 1976 [24 April 1975] 12938/76 Heading H5R [Also in Division H1] In a radiographic imaging chamber of the type in which a charge storage image is formed on a dielectric sheet 22 disposed between electrodes 13, 20 defining a discharge region 16 containing a liquid or gas, the charge pattern is rendered visible by the migration of electrophoretic particles which are distributed over the image in accordance with the charge pattern. Where a liquid discharge is used, as shown in Fig. 1, the electrophoretic particles are suspended in the liquid which can be dibromotetrafluoroethane or di-iodomonofluoromethane. Where a gas discharge is used the interelectrode region 16 is divided by a partition (67) Fig. 6 (not shown) paralled to the electrode and consisting of a dielectric sheet with many conductive pins passing therethrough, the region above the partition containing gas and the region below containing a suspension of electrophoretic particles in liquid. The viewing may be by transmitted light, reflected light from source 40 or scattered light from source 42. The operating voltage is applied to the chamber in synchronism with the energization of the X-ray tube 10 and image erasure is effected by closing switch 51.
Patent GB-669005-A (GB)
Title: Power operated flat iron press
Inventor: YANCHENKO BASIL JOHN
IPC: D06F71/32
Filed: 1950-05-24
Abstract: 669,005. Ironing-machines. PROSPERITY CO., Inc. May 24, 1950, No. 12999/50. Class 138 (ii). A power-operated flat-iron press includes a frame 1, an ironing table 2 thereon, a flat-iron 5 co-operating therewith, a horizontally-extending arm 6 mounted to move the iron toward and from the table and to shift fore and aft and laterally over the face of the table 2, an upright yoke lever 8 pivoted on a horizontal axis 9 extending transversely of the frame and the arm 6, a carrier 11 swivelled to the lever 8 on an upright axis 12, the arm 6 being slidably mounted in the carriage to shift fore and aft, and power operated actuating means for the lever 8. In the construction shown in Fig. 1 the lever 8 is bifurcated at its upper end, and the carrier 11 is mounted between the bifurcations. In a modified construction (Fig. 10, not shown), the carrier is pivotally mounted adjacent the side of the lever 8 at a position beneath the axis 9. The power means comprises a pneumatic cylinder 7 supplied with compressed air via a foot-controlled valve 30 of the combined intake and exhaust type. In a modification (Fig. 8, not shown), separate intake and exhaust valves are employed and are operated in sequence by a common footoperated lever. The intake valve may have a pressure-regulating valve for producing a graduated pressure. A return spring 20 raises the iron off the work when pressure is released and the iron may be initially adjusted relative to the buck by rotation of a hand wheel 25. This alters the position of the fulcrum 27 of a lever 22 which is pivoted at 21 to a part rigid with the frame 1 and at 19 to the cylinder 7. In an alternative arrangement the air supply may be controlled by a hand lever T (Fig. 9), adjacent the iron handle. In the lever position shown, the pipe 57 leading to the cylinder 7 is in communication with the exhaust port 58. When the valve is depressed the exhaust port 58 is closed and the pipe 57 is placed in communication with the compressed air pipe 56. The arm 6 is ball-jointed to the iron 5 at 15 and is slidable between rollers 13 mounted in the carrier 11. The iron 5 is heated by steam which is supplied to the iron by a pipe 37 and then passes by pipes 38, 39 to the buck and thence to a return pipe 42. The iron may be perforated for steaming the work and the buck may have a foraminous top. In this case a steam or air-operated injector, Fig. 11 (not shown), maintains a degree of vacuum with the buck. Respective valves controlling steam (or air) supply to the injector and communication between the injector and the buck are connected by linkage to a common lever which is adapted to be operated by the hip of the operator. A lever 92 is provided for controlling the amount of steam projected from the iron.
Patent GB-560055-A (GB)
Title: Improvements in and relating to electric wave communication systems
IPC: H04B3/30
Filed: 1942-09-15
Abstract: 560,055. Balancing. REDIFFUSION, Ltd., ADORJAN, P., and ROSCOE, R. V. Sept. 15, 1942, No. 13012. [Class 40 (iv)] In order to balance the insulation resistance of a pair of signalling conductors with respect to earth (or common potential), each conductor carries a direct-current earth-return circuit including one or more non-linear resistances which produce a compensating effect when any unbalance occurs. In Fig. 1, the resistances 6, 7 are of the kind such as thermistors which vary inversely with the current and are polarised by direct current supplied through chokes 9, 10 or by way of a tapping on the transformer which feeds signal currents to the conductors. If, for example, one of the conductors develops a lower insulation resistance, the corresponding resistance 6 or 7 receives less current and therefore increases in value. Alternatively, the polarising battery may be connected between the resistances 6, 7 and earth, in which case they should be metal filament lamps or other devices whose resistance increases with the current. The polarising current may be controlled in accordance with the prevailing flow of current in the two conductors. In Fig. 2, the paths which supply the polarizing current are connected by rectifiers 15, 16 through which additional current flows when the currents through resistances 11, 12 become unequal. In another arrangement, Fig. 3 (not shown), each path includes an indirectly-heated thermistor having its heating coil connected across the resistance 11 or 12 of the other path. Variablybiassed thermionic valves may also be employed. A differential meter 19, or separate meters, may be provided for indicating the presence and, if desired, the magnitude of faults. The earth return may be replaced in the arrangements described by a metallic conductor which provides the return path of a phantom circuit.
Patent GB-148667-A (GB)
Title: Improvements in the manufacture of electric cables containing conductors conveying currents in parallel
IPC: H01B9/00
Filed: 1919-05-23
Abstract: 148,667. Johnson & Phillips, and Porteous, D. A. S. May 23, 1919. Cables and compound conductors.-The strands of a conductor A, Fig. 1, laid with a long lay in the same direction, are insulated with paper, &c., B, a pair of such conductors being then laid together, preferably with the same direction and length of lay as each conductor, and are drawn through a series of progressively smaller circular dies so as to compress the conductor to the form shown in Fig. 2 without appreciable elongation, before the outer lead or other covering is applied. To form a multi-core cable, each pair of conductors is sheathed with paper, &c., C, and the pairs are then laid together, preferably with the same direction of lay as the individual wires, the cable being drawn through a similar series of dies to produce the form shown in Fig. 3, after which insulation D and a lead or other cover E is applied. Worming F may be applied within the envelopesfor each pair and for the completed cable.
Patent GB-1439712-A (GB)
Title: Olefin polymerisation catalysts having magnesium aluminium  alkoxide supports
IPC: C08F10/00
Filed: 1974-03-25
Abstract: 1439712 Supported Ziegler catalyst NIPPON OIL CO Ltd 25 March 1974 [26 March 1973 17 April 1973] 13126/74 Heading C3P [Also in Division C2] Olefines (e.g. ethylene or ethylene-propylene mixtures) are polymerized in the presence of (A) an organoaluminium and/or organozinc compound and (B) a titanium and/or vanadium compound supported on a carrier comprising the reaction product of 1 molar amount of a magnesium acetate and at least 1À6 molar amounts of a compound Al(OR) 3 , where R is C 1-20  alkyl, in particular a compound
Patent GB-550160-A (GB)
Title: Improvements relating to screw-thread mechanisms and particularly vehicle steering mechanisms
IPC: B62D3/08
Filed: 1941-10-14
Abstract: 550,160. Screw-and-nut gearing. BURMAN & SONS, Ltd., BRIGGS, T. H., and BRIGGS. W. H. Oct. 14, 1941, No. 13213. [Class 80 (iii)] Relates to screw-and-nut gearing and particularly that used in vehicle steering mechanism, in which a half-nut engages the screw-thread and is connected by a lever to the part to be actuated. According to the invention the half-nut is both slidably and pivotally supported by a guide member arranged parallel with the axis of the screw. A short screw a connected to the steering shaft is mounted in a housing b and is engaged by a half-nut c connected by a ball h and groove j with an arm d on the rock-shaft e. For guiding the nut, it is provided with a boss f bored to slide over a fixed rod g. The half-nut may be adjusted for backlash by a screw k in the cover m bearing axially on the shaft e.
Patent GB-132335-A (GB)
IPC: F01L1/42
Abstract: 132,335. Redrup, C. B. Sept. 9, 1918. Valve-gear for a radial-cylinder engine comprises a pair of rings f, e which are mounted loosely upon eccentrics d, c secured to the crankshaft. The rings carry projections x which engage a series of pins h, the projections being cut away at l to form cam-surfaces which act upon valve-rods g on alternate revolutions.
Patent GB-133084-A (GB)
IPC: G05D16/06
Abstract: 133,084. Parade, J. C. J. de Lestang-. July 5, 1917, [Convention date]. Pressure-regulating valves.-A diaphragm-actuated pressure-regulator has a sealed chamber b above the diaphragm c which is connected to a lever g adapted to bear against a valve member i<1> carried by a spring blade i. The lever is adjustably connected to the diaphragm by a forked member f having a screwed stem f<1> secured by a nut k in a cup j attached to the diaphragm. The nut k may be fitted with an indicating-disk and may be protected by a cap screwed into the cup. A pressure gauge, comprising a Bourdon tube arranged in a fluid-tight chamber connected to the inlet passage d', is fitted above the regulating-chamber.
Patent GB-133155-A (GB)
IPC: B29D30/02
Abstract: 133,155. Burnett, C., and Burnett, A. E. Oct. 3, 1918. Stream-cutting machines; rolling-machines moulding pipes and tubes, and wheel tyres.-In apparatus for making solid band tyres, of the kind in which the foundation band mounted on an oscillating arm is pressed into contact with the rubber on the calender roll, the rolling pressure between the foundation band c and the roll a<1> is effected adjustably and mechanically. The oscillating arm d is mounted on a shaft d<1> carrying fixed and adjustable friction disks d<3>, d<4>, which have frictional contact with a sprocket-wheel f driven from the roll a<1>. The rubber on the roll is guided by guides m and is cut by cutters g. An arm d and its accessories may be arranged on each side of the roll a<1> and may be duplicated on each side. Specification 134,584 is referred to.
Patent GB-688007-A (GB)
Title: Improvements in machines for continuous treatment in open-width of fabrics and, generally, of material in band or sheet form
IPC: D06B17/06
Filed: 1951-06-05
Abstract: <PICT:0688007/IV (c)/1> <PICT:0688007/IV (c)/2> <PICT:0688007/IV (c)/3> In a machine for continuous treatment of open-width fabric in which two sprocket chains carry sticks supporting the folds of fabric, the end clearance of all the sticks is made equal.  The sticks 4, Fig. 3, pass through inner and outer links 14a, 15a, a distance-piece 18 being welded to link 15b to give the same end clearance as link 14b.  The distance-pieces may be taken from the slots 17 in the links, Fig. 4.  As the chain moves through the bath, the sticks 4, Fig. 5, move up saw-tooth ramps 19, the fabric T falling slowly to obtain an improved dyeing effect.  A complete dyeing machine is described, Fig. 1 (not shown), in which fabric from a roll passes over a heated cylinder and through a soaking vat before being fed through an introducing vat into the main dyeing tank.