baber/WOPTO huggingface dataset:
Patent GB-1419293-A (GB)
Title: Chlorolysis reactors
IPC: C07C67/00
Filed: 1973-04-13
Abstract: 1419293 Reactor with lining HOECHST AG 13 April 1973 [15 April 1972] 17913/73 Heading B1F and B1X The invention relates to a reactor and a method of manufacturing the reactor, the reactor being for the chlorolysis of an aliphatic cyclo aliphatic or aromatic compound of a chlorinated product thereof or a mixture of two or more of these compounds and comprising a pressure-bearing jacket made of hightemperature steel, the sulphur content of which is no more than 0.015% by weight and the carbon content of which is no more than 0.08% 'by weight, and an internal lining for the jacket free from welding seams and spots, having a nickel content of at least 99% 'by weight, the sulphur content of the lining being no more than 0.01% by weight and the carbon content no more than 0.02% by weight. The method of manufacturing the reactor comprises fitting the above jacket with the above internal lining, the contacting surfaces of the jacket and lining being made substantially free from carbon and sulphur containing impurities before assembly e.g. by cleaning with acetone, carbon tetrachlorate, trichloro-ethylene or demineralized water.
Patent GB-1216951-A (GB)
Title: An energy independent radiophotoluminescence dosimeter with good fading stability
IPC: C03C4/00
Filed: 1969-04-08
Abstract: 1,216,951. Glass compositions. UNITED STATES ATOMIC ENERGY COMMISSION. 8 April, 1969 [19 April, 1968], No. 17983/69. Heading C1M. [Also in Divisions C4 and G6] -An energy independent dosimeter having good fading stability at normal and elevated temperatures (e.g. 250 and 350 C.), comprises a lithium borate glass consisting of Li 2 O, B 2 O 3  and a silver salt soluble in the glass matrix in the proportions, by wt., Li 2 O ... 0À2 to 2 grams; B 2 O 3  ... 7 grams and silver salt (e.g. AgPO 3 , AgNO 3 , Ag 2 CO 3 ) ... 0À01 to 0À20 grams. The dosimeter glasses may -be encapsulated as a protection against dirt, mechanical damage and humidity changes. SiO 2  or BeO may be included in amount from less than 1 to a few per cent by wt. to improve the weathering resistance. Low level (personnel) doses may be recorded by radio photo-luminescence (read out by exposure to U.V.) and high level doses by the formation of optical absorption bands in the near ultraviolet. Doses of thermal neutrons, X-rays, gamma and alpha rays, and tritons are instanced and <SP>60</SP>Co radiation referred to. In preparation, the starting materials are mixed, heated in air at 950 C. and cooled. The dosimeter may be exposed to a source of gamma rays and thermal neutrons and then dosimeter stabilized by heating to 320 or 325 C. for instance subsequent to exposure to obtain the maximum stable radio photoluminescence, whereby the separate gamma ray and thermal neutron induced recordings may be evaluated. Sterilization and food processing applications are instanced.
Patent GB-891936-A (GB)
Title: Improvements relating to delay lines
Inventor: TAYLOR LOCKHART
IPC: H03H7/34
Filed: 1959-05-27
Abstract: 891,936. Delay lines. FERRANTI Ltd. May 19, 1960 [May 27, 1959], No. 17997/59. Class 40(8). A delay line of the distributed-constant type comprises a first inductive section followed by sections providing both inductance and capacitance, the latter each being formed by a continuation of the winding of the first inductive section combined in a bifilar winding with a separate conductor providing capacitance. The required inductance of each section may be obtained accurately by winding a prescribed number of turns about the former 1. The first section comprises a single winding I of inductance L/2, this winding being continued into the second section where it is combined with a separate conductor to form a bifilar winding II. Extra turns of the first conductor are then 'added in a winding III to bring the inductance of the second section to a value L. One end of the separate conductor is trapped between the windings II, III and the free end connected to a further conductor. The free end of the first conductor and the free end of the separate conductor are then connected to a circuit for comparing thedelay of the wound sections with a standard delay. The first conductor and the further conductor are then wound in a bifilar winding IV until the delay time of the line so far wound is within tolerable -limits. The first conductor is continued in a -winding V for a specified number of turns to produce an inductance L/2 whereupon a tapping is made to a pin 3 on the insulated partition 2. The winding VI is then made from the first conductor to bring the total inductance of the third section to L. It is necessary to test in this manner only certain ones of the subsequent sections, the rest of the sections being formed by winding a specified number of turns of each conductor. The test operation is, however, carried out during formation of the capacitative bifilar winding VII of the last section. Finally, winding VIII is added to the last section to produce a total inductance L/2 for this section.
Patent GB-1014313-A (GB)
Title: Electrochemical machining of metals
Inventor: BENNETT ROBERT STANLEY
IPC: B23H7/18
Filed: 1961-05-18
Abstract: A method of carrying out an electrochemical machining process comprises feeding a tool, forming a cathode, towards a workpiece to be machined, forming an anode, whilst an electrolyte is caused to flow through the gap between them and an electric direct current is caused to flow across the gap through the electrolyte, in which method an electrical signal <PICT:1014313/C6-C7/1> dependent on the conductivity of the electrolyte is obtained and used to keep the length of the gap substantially constant, this result being achieved either (a) by keeping the rate of feed of the total substantially constant and using the signal to control the voltage across the gap inversely in relation to the conductivity of the electrolyte, or (b) by maintaining the voltage across the gap at a constant value and controlling the rate of feed of the tool in accordance with the conductivity of the electrolyte.  Conductivity changes occur as a result of contamination or temperature changes of the electrolyte. Fig. 2 shows a circuit for effecting method (a) D.C. electrolysing current is supplied between an anodic workpiece W and a cathodic tool T from A.C. mains via a rotary transformer RT and a rectifier U. Probes P in the electrolyte and a bridge circuit B produce a voltage VR that is inversely proportional to the conductivity and this together with the voltage V across the tool-workpiece gap is fed to a comparison circuit D.  The resultant error signal is fed through a D.C. amplifier A to a servo-motor M which controls the output of the rotary transformer and thus the voltage V to maintain the gap constant.  A tapped transformer may replace the rotary transformer RT, alternatively the output of amplifier A may directly control a rectifier circuit comprising controlled semiconductor elements.  Fig. 3 shows a circuit for effecting method (b).  A motor M1 acts through a gear-box GB to advance a tool T1 at a speed that is normally constant and is determined by the setting of a potentiometer F.  A comparison circuit D1 has fed into it a signal V1 from the potentiometer F and subtracts from it both a signal VR1 and VT. Signal VR1 is directly proportional to the electrolyte conductivity and signal VT is derived from a tachometer generator TG driven by the motor M1.  The resultant error signal from circuit D1 is fed to a D.C. amplifier A1 and thence to the motor M1.  The speed of the motor is initially set by the potentiometer F whereas changes in the signals VT and VR1 and resultant error signal cause changes in the motor speed to keep the toolworkpiece gap constant.  Where temperature variations of the electrolyte are liable to be wide its temperature may be controlled, e.g. by thermostatically controlled heating elements or refrigerating system or by passing the electrolyte through a heat exchanger cooled by a constant temperature fluid.
Patent GB-365009-A (GB)
Title: Improvements in umbrellas
IPC: A45B7/00
Filed: 1931-06-23
Abstract: 365,009. Umbrellas &c. HALL, W. D. 5, Chalmers Crescent, Corstorphine, Edinburgh. June 23, 1931, No. 18120. [Class 134.] An umbrella wherein the stick 1 is eccentrically disposed in relation to the cover when open, comprises a lever 3 pivoted at one end to a rib carrier 4 and a double lever 5 pivoted to a spreader wire carrier 6. The levers 3, 5 are pivoted to each other at 17 at their free ends and to a lug 2 on the main stick 1 and a runner 7 respectively at intermediate points 15, 16. The arrangement is such that when the runner 7 is drawn down, the carriers 4, 6 are drawn apart and the cover is collapsed. The rib carrier 4 is slotted so that in the closed position the lever 3 is received into it, and the carrier 6 is similarly cut away to receive part of the stick 1. In order to facilitate opening, the levers 3, 5 are bent so that the pivots 15, 16, 17 are out of alignment in the closed position. When open, a projection on the rib carrier 4 is received in the stem of the spreader wire carrier 6 so as to render the umbrella rigid. The carriers 4, 6 carry radial slots and circumferential grooves which are wired to form pivots for the ribs and spreader wires. Spring catches 19, 20 are provided for holding the umbrella in the open and closed positions. The rib carrier is formed with a tubular extension for carrying a ferrule. A hole 18 is provided in the lever 3 for the attachment of a small cover, as by stitching, in order to prevent the levers 3, 5 wearing against the umbrella cover on opening.
Patent GB-824909-A (GB)
Title: Improvements in or relating to spring balances
IPC: G01G3/08
Filed: 1958-06-06
Abstract: 824,909. Weighing apparatus. METTLER, E., [trading as METTLER FABRIK FUR ANALYSENWAAGEN, E.]. June 6, 1958 [April 2, 1958], No. 18137/58. Class 143 In a spring balance of the kind in which the weigh pan 22 is connected by spring plates 17, 18 to an intermediate member 12 which is, in turn, connected by spring plates 10, 11 to the base frame 5, 7 of the balance, the spring plates 10, 11, 17, 18 are pre-bent in such a way that under no-load conditions they assume an S-shape whilst when the pan contains its maximum load they are approximately flat. The scale is adjusted by inserting weights in holes 24, 25.
Patent GB-1125263-A (GB)
Title: Improvements in or relating to valve gear for internal combustion engines
IPC: F01L1/14
Filed: 1966-04-26
Abstract: 1,125,263. Cams. R. EASTHAM. 5 April, 1967 [26 April, 1966], No. 18149/66. Heading F2K. [Also in Division F1] A tappet 14 in an I.C. engine valve gear is of bridge (channel section) or crosshead form, the sides of which slide in or on guides 19. In Fig. 1, the tappet 14 is of channel section, the web 16 engaging a cam 15 on one face and a valve stem 11 on the other, while the flanges 17 slide in guide slots 18 of guides 19. The flanges may extend towards or away from the cam, and, if the tappet is secured to the valve stem, the valve spring 12 may bear on the tappet web 16. A desmodronic arrangement (Fig. 7) includes the tappet 14 engaging a cam 15 offset from the centre line of the valve stem 11, and a tappet 23, the walls of which define a rectangle, engaging a cam 22 also offset from the valve stem centre line. The web 16 of tappet 14 engages the upper face of the valve stem head 11 a while the lower wall 23a of tappet 23 engages the lower face of the head 11a
Patent GB-498013-A (GB)
Title: Improvements in or relating to apparatus for the centrifugal moulding of concrete pipes and the like
IPC: B28B21/34
Filed: 1937-06-30
Abstract: 498,013. Moulding pipes &c. in centrifugal machines. HUME, W. R. June 30. 1937, No. 18197. [Class 87 (ii)] Apparatus for the centrifugal moulding of concrete pipes or pipe linings comprises means for supporting and rotating one or more horizontal moulds &c., means for jolting each mould by intermittently projecting it upwardly, and resilient means acting in opposition to said jolting means. One or more moulds 2 are supported and driven by runner wheels 3 on shafts 4. One or more of the shafts 4 are mounted in bearings 6 which are capable of vertical reciprocation limited by bolts 9 and adjustable springs 12. These shafts 4 carry jolting wheels 13, such as described in Specification 409,527, which co-operate with idler rollers 14 mounted in eccentric bearings 17. The bearings 17 are adjustable by means of a shaft and hand wheel to vary the amount of jolting. The other shafts 4 are mounted in fixed bearings 6a. The displaceable shafts 4 are directly driven by belts 25 from shafts 28 which are also mounted in vertically displaceable bearings 32 carried by bolts 34 and springs 36. Alternatively the shafts 4 may be driven by flexible shafts. The jolting wheels may be carried by the moulds themselves or may act on the wheels 3 from below.
Patent GB-589813-A (GB)
Title: A method of manufacture of plasterboard, or slabs, or like products
IPC: B28B7/08
Filed: 1944-09-25
Abstract: 589,813. Building blocks. CARPENTER, G. Sept. 25, 1944, No. 18236. Drawings to Specification. [Class 87 (i)] [Also in Group V] A plasterboard or slab consists of two plaster facings separated by ribs of fibreboard, wood wool or other heat or sound insulating material. The ribs may be replaced by a solid slab of insulating material, e.g., foamed slag. A modified form of plasterboard has one plaster facing only backed as before by ribs or by an insulating layer.
Patent GB-184021-A (GB)
Title: Improvements in or relating to sieves or strainers for straining paints, enamels, and the like
IPC: B44D3/10
Filed: 1921-07-06
Abstract: 184,021. Worthington, T. July 6, 1921. Funnel strainers.-Apparatus for straining paint, enamel, &c. comprises a straining diaphragm c secured in a ring d having projections f <1> which engage with bayonet-slots b in the lower rim or flange a<1> of the receptacle a. The diaphragm c is soldered to the ring d, a wire ring e is soldered to the diaphragm, and the projections f<1> are soldered to the wire e.
Patent GB-146329-A (GB)
Title: Improvements in and relating to worm gear
IPC: F16H1/16
Filed: 1920-07-02
Abstract: 146,329. Krupp Akt.-Ges., F. Nov. 11, 1918, [Convention date]. Gear-cutting.-Worm-and-wheel gearing suitable for gear-cutting machines comprises a wormwheel A driven by a worm B, which is movable axially by a cam a<4> to compensate for inequalities in the pitch, and so give an even drive. The worm B slides on a feather on its spindle D being moved bv a nut F threaded on a screwed spindle E. The spindle E is turned in one direction or the other by an arm e<2> engaging a face cam a<4> upon a disk A<3> fixed to the spindle A<1> of the wheel A. The arm c<2> is kept up to its work by a weight e<1>.
Patent GB-1471868-A (GB)
Title: Track rail anchorages
IPC: E01B9/32
Filed: 1973-04-17
Abstract: 1471868 Securing railway rails MOLYNEUX RAIL CLIPS Ltd 16 April 1974 [17 April 1973] 18348/73 Heading E1G A rail flange 3 is laterally located on a plate 6 by a reversible abutment member 1 having an off-centre aperture 12 between two opposed end abutment surfaces 17, 18, the aperture 12 receiving a cam 11 (shown circular) having an eccentric hole 10 rotatably mounted on an upstanding anchor bolt 8. Variations in the lateral location of the rail (e.g. between positions 4A, 4B) can be accommodated by angularly adjusting the cam 11 by its octagonal head 13, the member 1 being reversed to give a second range of adjustment. As shown the member 1 is rectangular and has end flanges 2 to overhang the rail flange and may carry a resilient railfastening body 5. The flanges 2 may be of different height.
Patent GB-559348-A (GB)
Title: Improvements in an incendiary material and method of preparation thereof
IPC: C06C15/00
Filed: 1942-12-24
Abstract: 559,348. Magnesium; pyrotechnic compositions; thermo-aluminic mixtures. FORD MOTOR, CO., Ltd. Dec. 24, 1942, No. 18350. Convention date, Nov. 21, 1941. Drawings to Specification. [Class 82 (i)] [Also in Group XXI] A material for use, either with or without admixture with metal oxides, for incendiary or pyrotechnical purposes, is made by reducing magnesium oxide and quenching the magnesium vapour in oil to form a thin slurry, passing this to a settling tank, using the lighter oil containing some magnesium particles for further quenching operations, and passing the thickened slurry through a filter and drier to obtain a thick heavy mud. The reduction of the magnesium oxide may be effected by heating in an electric furnace with carbon in an atmosphere of nitrogen. Specifications 431,537 and 448,536 are referred to.
Patent GB-438466-A (GB)
Title: An improved binding device for loose-leaf ledgers and the like
IPC: B42F13/34
Filed: 1934-06-21
Abstract: 438,466. Binding apertured sheets. CASSIN, P., 19, Eastcheap, London. June 21, 1934, No. 18367. [Classes 16 and 146 (i)] A binding device for apertured sheets comprises a telescopic post c, d, of which the inner rod d is laterally recessed to receive two rearwardly-directed curved spring- tongues d<1> which permit insertion of the rod d in the tube c but prevent its withdrawal. A sleeve c<1> slidable frictionally on a reduced part of the tube c is provided to engage the perforations in the sheets and prevent contact with the rods d when the total thickness exceeds the length of the tube c. The posts may be of elongated cross-section and formed with loops slidable on supporting bars a<1>, bl so as to be adjustable along the bars according to the distance apart of the perforations in the sheets. In this form, the tongues d<1> may be struck-up from a metal strip secured between the ends of two strips forming the inner member c and perforated to provide the recesses for the tongues.
Patent GB-735815-A (GB)
Title: Improvements relating to capsule-like closures for jars, bottles and the like
Inventor: IBBETSON MYER JOHANAN
IPC: B65D51/32
Filed: 1953-07-02
Abstract: 735,815. Stoppers. IBBETSON & CO., Ltd., A. April 26; 1954 [July 2, 1953], No. 18373/53. Class 125 (3). A jar closure 2 with a flange 3 and end wall 6 has a filling aperture closed by a stopper 11 having a head 13 which may be welded or heatsealed to the wall 6, and an integral brush on pad member 7. The material used is polyethylene, polyvinylchloride, polystyrene or similar material.
Patent GB-1087683-A (GB)
Title: An improved clip device for a cap member of a fountain pen
IPC: B43K25/02
Filed: 1966-04-27
Abstract: 1,087,683. Pen-caps. LE FOYER ET CIE. April 27, 1966 [May 31, 1965], No. 18375/66. Heading B6P. [Also in Division E2] The pocket clip for a pen is provided with two parallel spaced-apart dugs 18, reach having an outwardly biased resilient ear 22. The cap, Fig. 7, is provided with an aperture at its closed end, which aperture extends over the side wall of the cap and over part of the bottom thereof. When assembled (Fig.14) the lugs 18 extend through the aperture in the cap, and the ears 22 spread out inside the cap to hold the clip in position. A cup-shaped washer (86, Fig. 14), inserted into the cap to abut the front edges 29 of the lugs 18, seals off the end of the cap by pressing against the inside wall of the cap.
Patent GB-743738-A (GB)
Title: Improvements in or relating to the treatment of wet or sticky materials
Inventor: GRINSTEAD BRIAN
IPC: C10G5/04
Filed: 1953-07-02
Abstract: 743,738. Treating peat. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. June 23, 1954 [July 2, 1953], No. 18382/53. Class 50. [Also in Group XXX] Apparatus for coating pieces of wet or sticky material with a dry dust or powder comprises a sheet of resilient flexible material mounted in a taut condition and inclined to the horizontal, the dust or powder being passed down over the surface of the sheet and the pieces of wet or sticky material are caused to impinge thereon, the resilience of and the tension of the sheet being such that the pieces are not deformed by the impact with consequent adhesion to the sheet. The sheet preferably has the property of local resilience and is porous and may be made from woven or knitted fabrics, e.g. linen, or a homogeneous sheet material, e.g. a thin sheet of synthetic resin or similar plastic material. In an application to the coating of pieces of wet peat with dry peat dust a flexible sheet 8, Fig. 2, is mounted between members 6 of a frame formed of members 6 and 7 to form a shoot 5. The longitudinal edges of the sheet 8 are secured to aluminium tubes 9 connected by springs 10 to hook-bolts 11, the tension of the sheet being adjustable by movement of the nuts 11 a. The shoot 5 is mounted in an inclined position, Fig. 1, beneath a macerating device which showers pieces of disintegrated peat on to the shoot. Dry peat dust is fed on to the shoot from a hopper 13. The coated pieces of peat fall on to a conveyer belt 14 at the foot of the shoot by which they may be delivered to a de-watering press.
Patent GB-184611-A (GB)
Abstract: 184,611. Wallace, C. W. May 30, 1921. Angle-measuring instruments; sextants; magnetic compasses.-Angles are measured in terms of the graduations on an evenly subdivided quadrantal chord. A radial arm B<1> turning about a pivot A at the centre of an arc F moves over the quadrantal chord A<2> and carries a hair line or thread C' or other indicator line arranged to intersect the chord for all angles within the quadrant. Sighting-pins D, D<1>, D<2> may be provided. The angle may be read also on the arc F in terms of graduations obtained by producing radial lines through the graduations on the chord to intersect the arc. The applications to sextants and to compasses are referred to.
Patent GB-915897-A (GB)
Title: Improvements relating to stylus spindle mounting assemblies for profile machining
Inventor: LEVINGTON HENRY JOHN
IPC: B23Q35/26
Filed: 1960-05-25
Abstract: 915,897. Electric copying-machines. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 25, 1961 [May 25, 1960], No. 18525/60. Class 38 (6). [Also in Group XXII] A stylus spindle assembly for use in profiling machines comprises a unit consisting of a diaphragm 4 fixed to the spindle 2 and clamped at its periphery between a pair of clamping members 9, 10 and means supporting the unit for axial movement comprising a pair of cantilever springs 11, 11<SP>1</SP> at each side of the unit in planes substantially parallel to the diaphragm, the springs of each pair being fixed, at their one ends, to an adjacent clamping member and to the end 12, 13 of a casing 18, and at their other ends, to each other through distance-pieces 14. The stylus S is carried by a holder 6 on the spindle assembly H extending from a magnetic pick-up 1 anchored by four springs. The diaphragm 4 is held centrally by the spindle part 2, a spacer 5 and a screw 7 passing through the stylus holder 6. The diaphragm permits angular movement of the stylus and the cantilever springs permit axial movement. Switches may be provided to limit the axial movement.