baber/WOPTO huggingface dataset:
Patent GB-921077-A (GB)
Title: Production of precipitated calcium carbonate
Inventor: DIEKMANN HEINRICH
IPC: C09C1/02
Filed: 1961-08-25
Abstract: Finely divided, substantially pure calcium carbonate is produced by the reaction between aqueous calcium salt solutions, e.g. the nitrate or chloride, and aqueous solutions of ammonium, sodium or potassium carbonates in the presence of water soluble fluorides, e.g. those of sodium, potassium or ammonium.  The fluoride is preferably present in the proportion of 0,05-5 parts by weight per 100 parts by weight of the carbonate.  After precipitation and filtration the filtrate contains no measurable amount of fluorine.  The example refers to calcium carbonate being precipitated from a calcium chloride solution by the addition of ammonium carbonate solution containing 0,2% of potassium fluoride based on the carbonate.  The calcium carbonate so produced has a particle size of 0,1m , a fluoride content of 0,09%, and the settling volume of a suspension of 10 g. in 100 c.c. of water is 99 c.c. after two hours.
Patent GB-757181-A (GB)
Title: Improvements in screw anchorages
IPC: F16B37/04
Filed: 1954-10-25
Abstract: 757,181. Screw-sockets. GISONDI, E. Oct. 25, 1954, No. 30680/54. Class 89 (1). An anchor for securing a screw &c. in a wall &c. is made from a sheet-metal blank, Fig. 1, and comprises a head 1, Fig. 6, with central screw-hole 6 having a number of tongues 7 therearound, prongs 10, 11 having hook-shaped ends 22, 23 which overlap prior to inserting a screw, and lugs 12, 13 pressed out of the prongs. The anchor is inserted in a bore 33 and receives a screw 25 to secure article 30 to the well &c. 32. The screw enters between the notched ends of the lugs, forcing the prongs apart so that the screw tip can enter between the notches of the prong ends 22, 23 and force the rear sides 31 into engagement with the back of the wall. Should the bore not extend through the wall, the hook-shaped ends are wedged against the bore walls. The tongues 7 frictionally engage the screw-shank adjacent the head.
Patent GB-1034271-A (GB)
Title: Systems for advancing mine roof supports
Inventor: PEAKE CECIL VOWE
IPC: E21D23/00
Filed: 1961-08-25
Abstract: 1,034,271. Apparatus for setting and removing advancing mine roof supports; mineral-mining machines. COAL INDUSTRY (PATENTS) Ltd. Oct. 23, 1962 [Aug. 25, 1961], No. 30699/61. Headings E1E and E1F. A system for advancing mine roof support units, e.g. 13, 13a, 13b, 13c, along a longwall mineral face comprises an articulated rail 14 joining the units and a slider 18 to slide along the rail 14 and to which a lever 17 is pivotally connected at one end, pivotally mounted at its fulcrum (and frame 15, 16) on a longwall-mining machine 10 on which is mounted an hydraulic jack 20 to pivot the lever 17 attached to the latter at the other end by means of the piston 21 to advance the units in turn. The rail 14 has trigger means for each support unit arranged to be actuated by the slider 18 to permit retraction of the corresponding unit from the roof. The machine 10 has a trigger device for engaging each roof unit so that a force is applied to the lever 17 to cause it to pivot to advance a particular unit. At the same time the previous unit may be raised to contact the roof.
Patent GB-211543-A (GB)
Title: Improvements in or relating to the manufacture of refractory articles, such as retorts
IPC: B28B21/74
Filed: 1922-11-10
Abstract: 211,543. Ruck, E., and Lehane, A. T. Nov. 10, 1922. Extrusion machines; processes. - Refractory articles such as retorts for zinc smelting are formed by compressing the clav into a solid cylindrical or other shaped body by extrusion through a pugmill having a tapering die, cutting into lengths and without further treatment transferring to a retortforming press. The pugmill is furnished with the usual short, parallel-sided discharge passage 5 fitted with a slide 7, and in addition with a gradually tapered discharge passage 6 terminating in a cylindrical portion 8 furnished with a hinged cover plate 9. The discharge passages are cast integrally with the mill section 11 and are furnished with renewable linings 12. The castings may be split longitudinally and adjusted by thumbscrews.
Patent GB-441726-A (GB)
Title: Improvements in cartons or containers
IPC: B65D5/38
Filed: 1934-10-26
Abstract: 441,726. Cartons. BENTLEY & CO. (PRINTERS), Ltd., 161, Rosebery Avenue, and HAMPTON, C. R., 15, Chadwell Street, Clerkenwell, both in London. Oct. 26, 1934, No. 30787. [Class 18] A drawer-andshell carton comprises a drawer formed from a blank having inturned flaps, two such flaps il, i2 having cut-away portions registering with a corner c of the front wall b provided with a flap d. The shell is formed from a T - shaped blank, the top of which constitutes closing flaps g, h. For facilitating withdrawal of the drawer, a tab n is provided.
Patent GB-606578-A (GB)
Title: Improvements in and relating to insecticidal and fungicidal preparations
Filed: 1945-11-16
Abstract: Preparations having fungicidal and insecticidal properties for the control of horticultural pests and diseases, comprise phenyl mercuric chloride intimately incorporated with a natural or synthetic organic insecticidal substance, the preparation containing no substance that reacts with the phenyl mercuric chloride.  Examples of natural insecticides are:-pyrethrum, nicotine or tobacco powders, rotenone or powdered derris, cub<\>ae and the like; and of synthetic insecticides:-2:4 dinitro-ocresol and salts thereof, D.D.T., hexachlorocyclohexane, tetra-nitro-carbazole and highly purified petroleum, distillates. The incorporation is preferably effected in a mixing and grinding apparatus in the presence of a solvent or inert liquid, a filler and a wetting or dispersing agent.  In examples, sulphonated cetyl alcohol, sulphite lye and sulphonated "Lorol" (Registered Trade Mark) are used as wetting agents.  Specifications 321,396, 330,548, [both in Class 81(i)], 557,499, 585,633 and 586,691 are referred to.
Patent GB-1355111-A (GB)
Title: Magnetic disc apparatus
IPC: G11B5/54
Filed: 1971-07-01
Abstract: 1355111 Raising and lowering transducers SOC HONEYWELL BULL 1 July 1971 [2 July 1970] 30976/71 Heading G5R In a system for raising and lowering a magnetic head 6 relative to a record (not shown), a carriage (not shown) is moved towards the record along the direction F 1 , and a shaft 1 on the carriage is thereby forced to rotate in the direction shown when a lever arm 20 engages a retractable stop 21; as a consequence of the co-operation between a cam 2, a follower 8, and a rocking arm 4, the head support 7 and head 6 are lowered, the correct position of the head being determined by the latching of a catch 12 in the notch 15 of a disc 10. If an energized magnet 16 is de-energized, springs 18, 19 cause an armature 17 to strike the catch 12, and a tensioned spring 9 is then able to rotate the nowunlatched shaft 1 to its original position, thereby raising the head 6. In a second embodiment, Fig. 2 (not shown), shaft 1 may be rotated as desired under the control of an electromagnet (28) and associated rotatable armature (27).
Patent GB-365165-A (GB)
Title: Improvements in and relating to the production and use of benzoylbenzoic acid and anthracene derivatives
IPC: C09B1/18
Filed: 1930-10-16
Abstract: Benzoylbenzoic acid and anthraquinone derivatives; cellulose esters and ethers, dyeing.--4<1>-Fluorobenzoylbenzoic acid is nitrated, reduced, and ring-closed to give a mixture of 2-amino-3-fluoro- and 1 - amino - 2 - fluoro-anthraquinone. According to examples the nitration is performed with nitric acid, or a mixture of nitric and sulphuric acids to give a 3<1>-nitroderivative, reduction is performed with pin or iron dust and acetic acid, and ring-closing with sulphuric acid, followed by fractional separation of the products.  The aminofluoroanthraquinones dye cellulose esters and ethers; for example, 2 - amino - 3 - fluoroanthraquinone dyes acetyl silk a bright yellow.
Patent GB-428288-A (GB)
Title: Improvements in alloys for permanent magnets
IPC: C22C38/08
Filed: 1933-11-07
Abstract: Alloys for permanent magnets consist of 3-50 per cent of nickel, 10,1-50 per cent of titanium, and not less than 25 per cent of iron, with or without 0,01-60 per cent of cobalt.  Up to 2 per cent each of one or more of the metals chromium, aluminium, vanadium, and manganese may be added.  In making the alloys, iron or mild steel, nickel, and ferro-titanium are preferably melted together.  The cast alloys may be heated to about 650 DEG  C., for 2 hours and cooled slowly.  The Specification as open to inspection under Sect. 91 refers also to the presence of copper, molybdenum, tungsten, and arsenic, as optional elements, and states also that the proportion of chromium, aluminium, vanadium, and manganese may be up to 20 per cent.  This subject-matter does not appear in the Specification as accepted.
Patent GB-763414-A (GB)
Title: Improvements in or relating to a transfer mechanism for a metal- working machine
IPC: B21D43/10
Filed: 1954-10-27
Abstract: 763,414. Forging. WATERBURY FARRELL FOUNDRY & MACHINE CO. Oct. 27, 1954 [Nov. 12, 1953], No. 30996/54. Class 83 (4). In a transfer mechanism for a metal-working machine, particularly a heading or nut-forming machine, having a plurality of dies 11 into which the workpiece is transferred in succession by spring-loaded gripping fingers 41, 42 mounted on a finger holder 25, the finger 41 is mounted on the depending leg 31 of a finger bar member 32 pivoted to the holder 25 at 34, and the finger 42 is mounted on a second leg 38 pivoted to the finger bar member at 39, the said holder 25 having spaced walls 27 for holding the legs in assembled position. The finger bar member 32 is adjustable about its pivot 34, for adjusting the horizontal position of the gripping fingers, by an adjusting screw 37 which engages a transverse head portion of the finger bar member; a spring 36 engaging in a bore 35 in the head portion biases the head portion against the adjusting screw. The fingers 41, 42 are pressed towards each other by a spring 50 mounted on a pin 49 and the spacing of the fingers is adjustable by a screw 46 having a lock-nut 47. The finger holder 25 is mounted on a shaft 23 carrying at its upper end a pinion 24 meshing with a stationary rack 18. The shaft 23 is rotatably mounted in bearings in a transversely movable slider 16 and as the slider moves the pinion 24 causes the gripping fingers to reverse the blank as it passes from one die to the next, in the manner described in Specifica. tion 730,321. The fingers 41, 42 are adjustable in a vertical direction by a screw 21.
Patent GB-703555-A (GB)
Title: Improvements in or relating to gas fires
IPC: F24C3/04
Filed: 1950-12-21
Abstract: 703,555. Gas fires. CANNON INDUSTRIES, Ltd., and OATLEY, A. F. Nov. 23, 1951 [Dec. 21,1950], No. 31117/50. Class 126 In a gas fire, part of the products of combustion is conveyed to a nozzle or outlet directed towards an escape from the room and a smaller part of the products of combustion is conveyed to a separate outlet directed into the room. The products of combustion emerging from the top of the central radiant or group of radiants 12 pass between partitions 16 to an opening 20 in the hood 13 which is directed into the room. The products of combustion from the side radiants or group of radiants 12 pass on either side of the partitions 16 to an outlet flue 25. A back partition 23 separates the duct between the partitions from the outlet flue 25, and a baffle 32 prevents down draughts from reaching the radiants.
Patent GB-886840-A (GB)
Title: Improvements in seats for motor vehicles
IPC: B60N2/68
Filed: 1959-09-12
Abstract: 886,840. Convertible vehicle seats. TILSLEY, W. Sept. 5, 1960 [Sept. 12, 1959], No. 31144/59. Class 52(2) The locking means for securing the rearwardly lowerable pivoted seat back of a vehicle seat in the upright position are arranged beneath the seat cushion so as to be accessible for release only when the cushion has been removed from its frame. As shown, a locking bar 4 is pivoted at 6 to a bracket 5 on the seat frame 1. Bars 4 can be swung inwardly, after removal of the seat cushion to clear abutments 7 on the back rest 2 and allow it to be lowered rearwardly. The horizontal flanges 4a of bars 4 provide supporting ledges for the seat cushion frame which has sliding bolts engaging plates 4c. The back rest carries a pivoted stay which can be swung out to support it in the horizontal position.
Patent GB-958827-A (GB)
Title: An electrical inverter
IPC: H02M7/44
Filed: 1962-08-14
Abstract: 958,827. Inverting. SIEMENS-SCHUCKERTWERKE A.G. Aug. 14, 1962 [Aug. 16, 1961], No. 31175/62. Heading H2F. An inverter, of the type having a transformer with two primary windings connected alternately to a D.C. source through switching elements, is controlled so that on starting the first element to conduct does so for a shorter time than on subsequent occasions, so that the flux in the transformer does not exceed its normal maximum value. The inverter may be driven by an oscillator using a saturable transformer of low remanence which, if switched on with the inverter, will start with the desired short halfcycle.
Patent GB-1335930-A (GB)
Title: Macrocyclic compounds and processes for their preparation
IPC: C11B9/00
Filed: 1971-04-19
Abstract: 1335930 Macrocyclic lactones INTERNATIONAL FLAVORS & FRAGRANCES Inc 19 April 1971 [11 March 1970(4)] 31180/72 Divided out of 1335927 Heading C2C A macrocyclic lactone is prepared by oxidizing the corresponding ketone of the general Formula where R represents a hydrogen atom or a substituent group and the sum of x and y is an integer of from 10 to 16, with a peracid in the presence of boron trifluoride etherate catalyst.
Patent GB-378277-A (GB)
Title: Wheel fixer and tyre changer press
IPC: B60B30/06
Filed: 1931-11-11
Abstract: 378,277. Mechanical presses for removing tyres &c. DUQUESNE, V., 44, Rue Quellin, Antwerp, Belgium. Nov. 11, 1931, No. 31276. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 13, 1931.] [Class 87 (ii).] A press for fixing wheels on work tables or for removing tyres or both, comprises a stepped table 7 mounted adjustably on a standard 10 resting in a base-plate 12 and prevented from turning therein by a cross-pin 11. An upper shaft comprises a lower screwed portion engaging the nut 8, an intermediate squared portion with serrations on two opposite surfaces to engage the spring latches 5 of the guided pressure platen 2, another screwed portion (not shown in Fig. 1) above the squared portion and finally a recess e at the upper end. By inserting a bar in the recess, the shaft can be rotated to move axially through the nut 8 and thus cause the platen 2 to exert pressure on the upper side of a wheel laid on the table 7. The upper screwed portion receives a nut 15, Fig. 2, rotatable by capstan bars 22 to depress a guided frame 19 of inverted T-irons on the shaft. The frame carries guided jaws 20 which are inserted between the tyre and the wheel rim so that when the frame 19 is depressed relatively to the wheel, the jaws force the tyre off the wheel rim. In the illustrated forms, Fig. 1 shows the appliance as used for fixing wheels only, and Fig. 2 as used for removing tyres only, but it may be used for both simultaneously as described above. When used for one operation only, the construction of the central shaft can be modified to omit the screwed or serrated parts necessary for performing both operations.
Patent GB-745490-A (GB)
Title: Improved stop-motion for textile winding and like machines
IPC: B65H63/036
Filed: 1953-11-11
Abstract: 745,490. Winding-machine stop-motion. UNIVERSAL WINDING CO. Nov. 11, 1953 [Nov. 12, 1952], No. 31280/53. Class 120 (2). A winding mechanism comprises a rotary drum 30, a rotatable cop holder 26, a bobbin cradle for supporting the cop holder, a rockable shaft 15 on which said bobbin cradle is fixedly mounted at one end to permit the cop holder to swing away from the driving drum, a second shaft 50 rockably mounted on the opposite side of the first shaft from the bobbin cradle, a yarn feeler 70 having its end fixed to said second shaft with an arm extending forwardly for engagement with the yarn, a hooked pawl 46 fast on the second shaft to adapt it to be rocked by movement of the yarn feeler upon its release by failure of the yarn, and a continuously oscillated rocker element 40 having means engageable with the hooked pawl to draw it down and rock the first shaft to pivot the bobbin cradle upwardly for raising the cop holder above the driving drum. During winding the feeler 70 is maintained in its lowermost position by the yarn y. When the yarn fails the balance weight 85 (previously adjusted) swings the feeler 70 upwardly thereby rotating the shaft 50 to which the hub of the pawl 46 is fixed. This rocks the pawl 46 forwardly to cause it to be engaged by the lug 45 on the rocker element 40. Downward oscillation of the latter pulls the pawl 46 downwards thus turning the shaft 15 clockwise. This action pivots the arm 16 of the cop holder 26 and lifts the latter above the drum 30. During the raising of the arm 16 a shoulder 57 on the locking member 55 will be turned into a position to be engaged by a detent pawl 58 under the tension of a spring 65 to lock the arm 16 in its elevated position (Fig. 7). Since the rocker element 40 is oscillating continuously the lug 45 is released from engagement with the pawl 46 by the upward motion of said lug 45 immediately the arm 16 has been locked. On the release of the pawl 46 a spring 47 acts upon the shaft 50 to rotate it in a counterclockwise direction to swing the pawl 46 rearwardly out of the path of the lug 45 and lower the feeler 70 to the normal winding position. To return the cop holder to the winding position the lever 96 is lifted by its finger-piece 99 thereby pivoting it on the shaft 15 to cause its finger 111 (Fig. 5) to engage a crank arm 64 and rock a shaft 60. This causes the detent pawl 58 to be released from the locking shoulder 57, thus permitting the arm 16 to be lowered so that the cop c is again brought into contact with the driving drum 30.
Patent GB-153478-A (GB)
Title: A new or improved device for use in lifting packing cases and the like
IPC: B66C1/14
Filed: 1919-12-15
Abstract: 153,478. Hill, T. H. Dec. 15, 1919. Slings and the like.-A sling for hoisting packing-cases &c. comprises a pair of dogs a mounted on a rope b. Each dog is provided with a pivoted gripping-foot d and a sheave c.
Patent GB-1440651-A (GB)
Title: Cooling thermoplastic tubes
IPC: B29C48/90
Filed: 1973-07-02
Abstract: 1440651 Tubular films IMPERIAL CHEMICAL INDUSTRIES Ltd 2 Oct 1974 [2 July 1973] 31404/73 Headings B5A and B5B A tube of thermoplastic material, e.g. polyethylene, polypropylene or polyethylene terephthalate, is extruded through an annular die and cooled by passing adjacent to a cooling surface, a sheath of heat transfer fluid being maintained between the tube and the surface, and the tube is adjusted transversely to the direction of movement so as to maintain uniform cooling of the tube by altering the thickness of the fluid sheath. The cooling surface may be an internal mandrel and/or may surround the tube, and may be cooled by water. The movement of the tube may take place about a fulcrum which may be a resilient seal situated at the end of the mandrel. The transverse movement may be imparted by an adjustable roller thrust assembly surrounding the tube. The heat transfer fluid may be a gas or liquid. The tube may be biaxially oriented by nip rolls and inflation. Other thermoplastic materials listed in the Specification are polybutene-1, poly-4-methyl-pentene-1, polyethylene - 1,2 - di - phenoxyethane - 4,4<SP>1</SP>- dicarboxylate, polysulphones and nylons.
Patent GB-845882-A (GB)
Title: Centrifugal spinning machine
IPC: D01H1/08
Filed: 1956-10-16
Abstract: 845,882. Centrifugal spinning &c. machines for thread. RUMANIAN MINISTRY FOR LIGHT INDUSTRY, FIRST DEPUTY MINISTER OF. Oct. 16, 1956 [Dec. 12, 1955], No. 31496/56. Class 120(2). A centrifugal spinning machine more especially for cotton and having a drafting device provided with three pairs of drafting rollers disposed vertically above each other and above a thread guide introducing thread to the centrifugal thread holder is provided with means for initiating winding of the thread from the holder to the bobbin. Rovings from a creel 2 pass through a vertical drafting device 3 to a thread guide 7 as described in Specification 845,883 which reciprocates under the control of traverse mechanism as described in Specification 845,885 the centrifugal thread holder 5 has a perforated wall and is mounted on the machine frame with the interposition of a rubber packing. A casing for the thread holder 5 is as described in Specification 845,884. When sufficient thread has been spun into the thread holder 5, the guide 7 is allowed to fall at a speed which is greater than the roving delivery speed to initiate winding of the thread on to a tube mounted on the guide, as described in Specification 845,887. In the event of a thread breakage in the winding on operation, the broken thread is transferred from the thread holder to the tube by a tool as described in Specification 845,889.
Patent GB-970526-A (GB)
Title: Collet assembly for use with thread winding means
Inventor: GEEN CORY PERCIVAL
IPC: B65H75/24
Filed: 1963-08-09
Abstract: 970,526. Friction clutches; expansible mandrels. INDUSTRIAL DEVICES Inc. Aug. 9, 1963, No. 31510/63. Headings F2C and F2U. [Also in Division D1] A collet assembly which is particularly intended for supporting and driving a cardboard tube or former on which thread or the like is to be wound comprises a plurality of spaced annular driving rings mounted around a driving spindle, the driving rings being expansible by centrifugal force upon rotation of the spindle to grip and drive the tube. Expansible annular drive rings 46 of rubber are mounted alternately with spacer rings 42 coaxially with and around a driving spindle 12. The spacer rings may be of aluminium or reinforced moulded plastic. When at rest the spacer and drive rings present a cylindrical surface over which the tube 14 may be slipped to abut against an end flange 56 of the collet assembly. Drive is transmitted to the spacers 42 by pins 40 engaging axial grooves 44 in the spacer rings and from the latter to the drive rings by further, axially disposed pins engaging radial slots in the drive rings (Fig. 5, not shown). Expansion of the drive rings 46 is limited by the outer flange members of the spacer rings 42. 'An axial extension 32 of an end hub 28 of the collet assembly is provided with circumferential grooves 31 for the reception of an initial waste portion of the wound material and axially disposed grooves 32 undercut the grooves 31 and provide for the insertion of a hooked knife for the removal of the waste winding.