baber/WOPTO huggingface dataset:
Patent GB-522824-A (GB)
Title: Improvements in and relating to means for withdrawing casing from wells or bore holes
IPC: E21B31/20
Filed: 1938-12-19
Abstract: 522,824. Withdrawing casing from wells &c. CUTHILL, J., and OIL WELL ENGINEERING CO., Ltd. Dec. 19, 1938; No. 36880. [Class 85] A tool for withdrawing casing from wells or boreholes comprises a body adapted to be lowered into the well &c. and having slips movable into engagement with the casing by the application of fluid pressure to an expansible or deformable member. The tool comprises a body in two parts 11, 12, with interposed packing 24, connected by a coarse thread 13, abutting parts 15 of helical end surfaces' preventing jamming. A valve chamber 48, containing a laterally-arranged 'spring-pressed non-return valye 50, is threaded to the body part 12 at 17 and provided with packing 49; the body part 11 has a reduced, threaded end 17 on which a threaded collar 18 is held by a lock nut 19, the collar having a crescent-shaped extension 20 adapted to open the valve 50 on relative rotation between the body parts 11, 12. Below the valve chamber 48 is a reservoir 25 from which a port 30 leads to a lateral port 32 in a reduced extension 26 of the body. Collars 33 have internal splines engaging splines 27 on the extension 26, and are held by a nut 29. Slips 35 are held between the collars, lips 34, 36 limiting movement of the slips and elastic bands 37 tending to hold the slips inwardly. The slips have helical serrations to permit release of the tool by rotation if necessary, lugs on the ends of the slips engaging recesses.in the collars 33 to prevent relative rotation between these parts. Within the slips, a sleeve 39 of rubber &c. is held between steel rings 41, 42, and expands the slips on admission of fluid pressure; the sleeve has inwardly extending lips 40 held against the body part 26. Overlapping spring segments are held to the slips by screws 45 to prevent parts of the sleeve 39 being forced between the slips on expansion.
Patent GB-1450416-A (GB)
Title: Television deflection circuit with low power requirement
IPC: H03K4/71
Filed: 1973-08-03
Abstract: 1450416 Sawtooth current generator RCA CORPORATION 3 Aug 1973 [16 Aug 1972] 36925/73 Heading H3T A sawtooth current generator comprises an amplifier including complementary transistors 9, 10 (Fig. 3) in series, a deflection coil 12 together with a capacitor 19 coupled to the output circuit of the amplifier and a diode 18 coupled between deflection coil and the capacitor, the arrangement being such that during the flyback the coil discharges via the diode into the capacitor which then discharges into the coil, whereby energy in the coil is recovered. The diode 17 may be provided to isolate the upper terminal of the coil from the supply V cc  to permit large voltage excursions and thus rapid flyback even with low voltage supplies and relatively high resistance coils. The drive is generated by charging a capacitor 14 in a feedback path and discharging it through a switch 15. Fig. 5 shows a free running line time base which uses a similar output circuit, the capacitor 19 (now numbered 55) being connected to +V cc  instead of earth. The sawtooth drive is derived by charging a capacitor 51 through resistor 59 and a height control resistor 58 and discharging it through a transistor 28. The level to which the discharge occurs is determined by resistors 29, 30 and a diode 52 offsets the emitter base voltage drop of transistor 28 to provide the correct starting current for the sweep. D.C. feedback is provided via resistor 44, the A.C. component being partly bypassed by capacitors 46 and 47. S shaping is effected by the charging of capacitors 46, 47 during the sweep, the sawtooth component of the resulting charge curve being cancelled by sawtooth component derived from a resistor 60 connected to the charging resistors leaving the parabolic component to effect the correction. The circuit is made free running by operating transistor 28 as an overdriven phase shift oscillator, the phase shift being provided by a frequency determining phase shift path including capacitors 48 and 72, resistors 61, 62 and 49 and a frequency controlling resistor 56. Additional feedback is provided by a diode 57 to charge capacitor 48 during the retrace and so increase the voltage waveform at the base of 28. Switching is speeded by positive feedback via 72. Synchronizing is effected by pulses applied at 25 and blanking pulses are obtained from transistor 53 by combining line pulses derived from resistors 79 with frame pulses applied at 69. Reference has been directed by the Comptroller to Specification 1,337,127.
Patent GB-1364273-A (GB)
Title: Tobacco smoke filter cartridge
IPC: A24F13/04
Filed: 1971-08-06
Abstract: 1364273 Cigarette holders; tobacco smoke filters W F VAN ECK 6 Aug 1971 37082/71 Headings A2C and A2M A cigarette holder 102 includes a filter cartridge 104 of the kind in which smoke is expanded and cooled to cause moisture to be condensed and tars to be precipitated and be deposited on the walls of the expansion chamber 108. As shown in Fig. 3, smoke enters the chamber 108 through a nozzle 107 that projects into the chamber 108 so that the smoke has to reverse its flow direction before passing out of the chamber 108 through an opening 109. The smoke then flows round the outside of the chamber defining member 105 and thence passes to a narrow bore 112 in the mouthpiece part 103 of the holder 102. In another embodiment, Fig. 6, baffles 130, 131 are included.
Patent GB-898194-A (GB)
Title: Rocket motor casings
Inventor: BAYLY CHARLES
IPC: F02K9/34
Filed: 1954-12-22
Abstract: 898,194. Rockets. IMPERIAL CHEMICAL INDUSTRIES Ltd. Dec. 19, 1955 [Dec. 22, 1954], No. 37105/54. Class 9(2). A rocket motor casing comprises a plurality of layers 2, 12, 14, 20, 26, 32 of helically wound strip metal, adjacent windings of strip in each layer abutting at their edges, the abutting edges of the metal in at least one layer being so displaced with reference to the abutting edges of the metal in the preceding layer as to ensure no right line path from the inside to the outside of the tube between abutting edges. The layers are bonded together by bonding material separating each layer from the next, a layer 38 of hydraulically sealing material being in contact with the inner surface of the innermost layer of the said plurality, and a layer 40 of heatinsulating material in contact with the inner surface of the said sealing material. A tapered end ring 42 is secured to the casing with an epoxy resin loaded with colloidal lead chromate to assist X-ray examination. An end cap 44 with a gasket 46 is bolted to the end ring. Additional strips 52, 50, 48 strengthen the casing near the end ring. The strips are of heat treated steel coated with "Araldite" (Registered Trade Mark), and are bonded together with a resinous adhesive material, such as a condensation product of epichlorhydrin and bis-phenol. The sealing material 38 is a neoprene such as Bekalide and the heat-insulating material is a filled neoprene.
Patent GB-1017452-A (GB)
Title: Heat distribution meter
IPC: G01K17/02
Filed: 1962-10-01
Abstract: 1,017,452. Clips. CONSTANTIN BRUN A/S. Oct. 1, 1962, No. 37173/62. Heading E2B. [Also in Division G1] In a heat meter in which a heat conductive body 1 is attached to a radiator or hot water pipe and has a cover 4 secured thereto housing a glass tube 3 or other registering member which can be viewed through a window 11, the cover 4 is held by the hook-shaped arms of a spring 14 engaging behind a boss 6 on the cover 4 immediately behind a very thin portion 17 of the cover. To remove or adjust the registering member 3, the portion 17 is broken and the hook-shaped arms of spring 14 are disengaged from boss 6, a new covering plate 16, which has the thin portion 17, being subsequently placed in an opening 15 in the cover 4.
Patent GB-1084799-A (GB)
Title: Electrolysis of electrolytic solutions and melts
IPC: C25B3/23
Filed: 1964-09-14
Abstract: In electrolyzing solutions and melts with an electrode spacing which is so small that a short-circuit would normally occur between them, the current density exceeds that at which the short-circuit is disrupted, preferably by at least 10 to 30 amps/dm2, this being made possible by the presence of electrolyte and reaction products between the electrodes which are forced apart by the short-circuit.  Examples are given of (i) electrolyzing NaCl solution with the graphite anode dipping 2 to 3 mm. into a mercury pool cathode with an applied P.D. of 4.1 to 4.5 volts providing a current density of 200 to 1000 amps/ dm2; (ii) producing bleaching solutions by electrolyzing with an applied potential of 3 volts across a graphite anode contacting a steel cathode; (iii) electrolyzing NaCl solution using a mercury poll cathode and a rotating disc anode which dips into the pool and which may be covered with a cloth wetted with electrolyte at temperatures of 50 or 60 DEG  C. with an applied voltage of from 3.4 to 4.9 volts and current densities of from about 100 to 450 amps/dm2; and (iv) producing an alloy of lead with sodium and calcium by electrolyzing a melt of NaCl and CaCl2 with a lead cathode contacting a graphite anode, an applied P.D. of 5 volts and a current density of 2000 to 3000 amps/dm2.
Patent GB-1131749-A (GB)
Title: Winding apparatus
Inventor: FROST JOHN RISK
IPC: D02H3/00
Filed: 1966-08-22
Abstract: 1,131,749. Counting yarn wound. DOW CHEMICAL CO. 22 Aug., 1966, No. 37562/66. Heading D1F. A multiple spindle winding machine in which the filaments I to 1d, Fig. 1, pass over a common snubber roll 3, has a toothed gear 5 rotating with the snubber roll 3, an electrical sensing member 6 giving a pulse as each tooth of the gear passes it, and a totalizing counter 7 giving an amplifier 8 one pulse for a plurality of pulses received from the sensing member 6, the amplifier 8 driving separate electrical counting devices 9, one for each spindle. Each counting device 9 controlls a switch to actuate a signal after the reception of a given number of pulses. An arm (14) Fig. 2 (not shown) on each winding panel (10) is held up by a filament 1 from the snubber roll passing round it on its way to the winding spindle (15) said arm (14), on failure of the filament to hold it up, moving to a setting causing a switch to stop the electrical counting device 9 for that particular panel. When this happens a bell or signal light may operate to attract the operator. When a counting device 9 causes a signal to be actuated, the operator causes the package for that particular panel to be doffed, initiates a fresh package, and re-set the counting device 9 to its count commencing setting.
Patent GB-359292-A (GB)
Title: Process for the production of hydrofluoric acid, low in silica
IPC: C01B7/19
Filed: 1930-12-15
Abstract: Hydrofluoric acid of low silica content is obtained from fluorspar and sulphuric acid by gently heating the pulp with stirring to expel silica as silicon fluoride, prior to driving off hydrofluoric acid, the concentration of the sulphuric acid being so low as to prevent solidification of the pulp.  The concentration varies for example between 70 and 90 per cent, according to the quantity of silica and other impurities, the silicon fluoride being expelled in several hours at a temperature of 70-120 DEG  C.  At higher temperatures hydrofluoric acid is also finally volatilized, but can be retained by a reflux condenser. The pulp can then be completely decomposed at a raised temperature.  Insufficient sulphuric acid, for example 50 per cent of the theoretical amount, may be added at the first stage, the remainder being added, if desired even as fuming acid, during or after expulsion of the silicon fluoride.
Patent GB-344920-A (GB)
Title: An improved method of and apparatus for heating stills or coke ovens with hot gases
IPC: C10B21/10
Filed: 1929-12-09
Abstract: 344,920. Heating by circulation of fluids. CHEMISCH-TECHNISCHE GES., 76, Merkatorstrasse, Duisberg, Germany. Dec. 9, 1929, No. 37785. Convention date, Dec. 7, 1928. [Class 64 (ii).] In a coke oven or other apparatus for destructive distillation in which hot gases are repeatedly circulated through external heating flues of substantially helical or circular forms, the temperature being maintained by the introduction of fresh heating gases with the consequent displacement of a corresponding quantity of the circulating stream, a propeller fan is used for effecting the circulation. Fig. 1 shows the invention applied to the heating of a rotary charge container 3 surrounded by a helical flue 4, the fresh heating gases being supplied by a gas burner 6, the supplies of gas and air to which are preheated by the expelled gases as they pass to the outlet pipe 9. The propeller 2, driven by a motor 1, may be arranged either in front of the burner 6 or behind it, as shown. Fig. 3 shows a modification in which the invention is applied to the heating of an apparatus for destructive distillation as described in Specification 240,800, [Class 51 (ii), Furnaces and kilns for applying &c.], the heating flues 1, in this case, being of circular form. Specifications 25612/96, [Class 51, Furnaces and kilns], and 240,201, [Class 51 (i), Furnaces and kilns, Combustion apparatus of], also are referred to.
Patent GB-539353-A (GB)
Title: A new or improved method of, and preparation for, treating outdoor surfaces for camouflage or other purposes
IPC: F41H3/00
Filed: 1938-12-30
Abstract: 539,353. Coating compositions. TARMAC, Ltd., and PORTER, H. Dec. 30, 1938, No. 37805. [Class 95] A preparation for coating outdoor surfaces for camouflage or other purposes, includes, as the sole ingredients, an aqueous solution of a soluble silicate and a powder including an inert colour and a filler having a chemical action with the silicate to form a lattice structure of crystals, the amount of soluble silicate used being such that the final coating is completely insoluble in water. The liquid and the powder are preferably mixed immediately prior to application. Examples are given of such coating preparations consisting of water, sodium silicate, oxychromium green or yellow ochre, and powdered chalk or limestone dust.
Patent GB-1471724-A (GB)
Title: Apparatus for automatically processing photo-gravure curvilinear surfaces
IPC: B41C1/18
Filed: 1974-08-29
Abstract: 1471724 Etching J K ANDERSON 29 Aug 1974 [29 1973] 37890/74 Heading B6J Etching apparatus comprises (a) a storage rack 16 for storing cylinders 3 to be etched, (b) a holding station 17 having a plurality of holding positions defined by V-shaped holders indexed by conveyer chains, (c) three etching stations 18a, 18b, 18c for successive etching with the etchant at different concentrations, each comprising an etching tray, roller support means for lowering a cylinder into the tray and rotating it, while etchant is circulated through the tray, (d) an etch terminating station 19 comprising two trays movable to be presented to a cylinder in succession, one for dilute etchant and one for terminating solution, (e) two cleaning stations 20, 21, each comprising a tray, and cylinder supporting means, the trays of the two stations being supplied in succession with respectively, (20) emulsifying solution to remove staging material, and water, and (21) photoresist removable solution and water, (f) a truck 31 for receiving processed cylinders and transporting them to the printing machine, and (g) a conveyer for transporting the cylinders through the processing stations in succession, comprising a hoist 22 slidable on tracks 24 and carrying vertically movable hook-like cylinder supports 23, the movement of the hoist and of the supports being controlled by timing circuits, actuated at the etching and cleaning stations by switches which are operated by cylinders moving on to or off the roller supports.
Patent GB-1516348-A (GB)
Title: Injectable compositions
IPC: A61K9/51
Filed: 1975-09-16
Abstract: 1516348 Pharmaceutical compositions in microparticulate form PHARMACEUTICAL SOCIETY OF VICTORIA and P SPEISER 16 Sept 1975 [18 Sept 1974] 38036/75 Heading A5B [Also in Division B8] Particles in the size range from 10 to 1000 nanometres comprise a cross linked matrix of macromolecules of natural origin. The macromolecules of natural origin may be one or more of serum albumin, collagen, casein, insulin, gum arabic, cellulose derivatives, rosin, and zein, preferably gelatin. A biologically or pharmodynamically active material may be supported on or incorporated into the crosslinked matrix. The active material may be phenobarbitol diazepam, antidepressants, prednisolone phosphate, sodium salicylate, steroids, hormones, atropine and prostaglandins. The particles may be prepared by (a) solvating the macromolecules to form a thermally equilibrated clear solution, (b) treating the solution with a desolvating agent under conditions which are not conducive to the coacervation of said solution so as to form particles of a size in the range of 10 to 1000 nanometers and (c) adding a hardening agent.
Patent GB-1272417-A (GB)
Title: Prefabricated covered swimming pool assembly
Inventor: KORMANN ALFRED
IPC: E04H4/00
Filed: 1969-07-29
Abstract: 1,272,417. Covered swimming pools. A. KORMANN. 29 July, 1969 [30 Nov., 1968; 18 Feb., 1969], No. 38114/69. Headings E1A and E1R. [Also in Division A4] A swimming pool constructed inside a portable structure of e.g. plastics covered corrugated steel sheets, is enclosed by a roof, 5, which is supported on the side walls of the structure and which incorporates a rectangular dome-shaped transparent cupola 7. A hollow support 10 for the cupola is constructed as a heating element and as a water jacket and serves to heat the pool room 1 and anteroom 9. Room 8 houses water purification equipment and a water heater.
Patent GB-1002961-A (GB)
Title: Improvements in electric discharge lamp
IPC: H01J61/20
Filed: 1961-10-25
Abstract: 1,002,961. Discharge lamps. GENERAL ELECTRIC CO. hot. 25, 1961 [April 11, 19611, No. 38208/61. Heading H1D. A high-pressure metal-vapour electric discharge lamp 11 comprises a tubular envelope 12 of refractory light-pervious material, e.g. quartz or alumina, a pair of slender tungsten electrodes 17 within and adjacent respective ends of the envelope, and a quantity of vaporizable metallic iodide in the envelope, the envelope being proportioned for operation of the lamp with a wall loading in excess of 40 watts per square centimeter. The lamp is preferably of the type described in Specification 945,762. The envelope contains an ionizable starting gas, e.g. xenon at a filling pressure of 50 mms. of Hg. The operating pressure is 5 atmospheres and suitable metal iodides are gallium, indium or thallium iodide or mixtures of these, preferably with an excess of iodine. Reference is also made to the use of iodides of tin, antimony, sodium, titanium and cadmium with or without the addition of mercury iodide.
Patent GB-919939-A (GB)
Title: Cartridge syringes
IPC: A61M5/32
Filed: 1961-10-26
Abstract: 919,939. Hypodermic injection appliances. WILBURN, E. H. Oct. 26, 1961 [Nov. 14, 1960], No. 38330/61. Class 81 (2). In order to enable a cartridge syringe to be used for aspiration prior to injection the ampoule 56 has an end stopper 57 which fits as a piston within a socket member 26 and the latter has a double-ended needle 38, the inner end of which has a lateral, by-pass orifice 54 communicating with the lumen of the needle. In the embodiment shown the member 26 is formed in one piece with a needle cap 28, there being a weakened portion 51 so that the latter may be separated off and used as plunger rod for engaging the stopper 61 of the ampoule. After the cap has been removed in this way, the ampoule is pressed into the socket member 26 so that the point 37 passes through the diaphragm 66 and trapped air passes out through the orifice 54 and the bore of the needle. The cap 28 is then introduced into the free end of the ampoule so that the resilient terminal flange is engaged behind the bead 68 and the needle is inserted into a vein, if desired. By pulling on the cap 28, the ampoule may now be drawn back slightly and, for an intravenous injection, blood will be drawn back and will appear through the orifice 54, Thereafter, pressure on the end 47 of the plunger 28 forces the stopper 61 along the ampoule to inject the medicament. In the foregoing embodiment the cap 28 is formed with at least three longitudinal ribs, equally spaced radially around it, which serve as locating guides when the cap is inserted into the tube of the ampoule and although the flange 49 is shown as circular it may alternatively be divided into four parts to give a cross formation. It is also proposed to form the cap 28 separate from the socket member 26, the two being engaged together by conical, mating surfaces. If the device is to be used for withdrawing blood samples an evacuated ampoule is used and this also has an end stopper which acts as a piston in the socket member 26, so as to enable the device to effect a preliminary aspiration. In this case, however, the needle is not thrust through the stopper until the test for correct placing of the needle in a vein has been made.
Patent GB-1383188-A (GB)
Title: Sulphoxide and sulphone derivatives of thiocarbamates and the use  thereof in herbicidal compositions
Filed: 1973-08-14
Abstract: 1383188 Sulphoxide and sulphone derivatives of thiocarbamates STAUFFER CHEMICAL CO 14 Aug 1973 [14 Aug 1972 (3) 18 June 1973 (3)] 38433/73 Heading C2C Novel sulphoxide and sulphone derivatives of thiocarbamates having the general formula wherein n is 1 or 2; R is (C 1 -C 6 ) alkyl, haloalkyl, alkoxyalkenyl or alkenyl, and R 1  and R 2  each represent (C 1 -C 6 ) alkyl, (C 3 -C 8 ) cycloalkyl, alkylcycloalkyl, alkenyl or alkynyl, are prepared by reacting a compound of the formula with an oxidizing agent, e.g. peracetic acid or n-chloroperoxy benzoic acid, preferably in an inert solvent at a temperature of from -25‹ C. to + 60‹ C. The compounds of the invention may be used as herbicides.
Patent GB-1411243-A (GB)
Title: Water soluble azo dyestuffs
IPC: C09B44/20
Filed: 1972-08-18
Abstract: 1411243 Water-soluble azo dyestuffs IMPERIAL CHEMICAL INDUSTRIES Ltd 6 Aug 1973 [18 Aug 1972] 38621/72 Heading C4P Novel water-soluble dyestuffs of Formula I where X is -CH 3  or -Cl, R is C 1-4  alkyl, R<SP>1</SP> is H, C 1-4  alkyl or halogen and A<SP>(-)</SP> is an anion may be prepared by alkylating a dye of Formula II The dyes of Formula I give blue and reddishblue shades on polymeric materials, especially polyacrylonitrile materials. The starting dyes of Formula II may be prepared by diazotization and coupling.
Patent GB-351429-A (GB)
Title: Improved manufacture of artificial silk by the stretch spinning process
IPC: D01F2/04
Filed: 1929-12-17
Abstract: Ammoniacal copper solutions of cellulose, processes for making filaments from.-In the manufacture of artificial silk by the cuprammonium process, in which the thread is passed from the spinning funnel to a hardening bath comprising acid and salt solutions, deleterious after-effects of the hardening bath are prevented by subjecting the thread to a washing process either directly on coming out or during its winding on spools or reels, or during its collection in spinning boxes.  The nature of the washing liquid is varied with the nature of the hardening liquid, but in general consists of water, or salt solutions, or weak alkaline solutions. The washing treatment may be carried out at raised temperatures.  The liquid flowing out of the spinning funnel and containing small quantities of ammonia may be employed as the washing liquid.