baber/WOPTO huggingface dataset:
Patent GB-1472253-A (GB)
Title: Dry cells
IPC: H01M6/08
Filed: 1974-08-28
Abstract: 1472253 Dry cells C W PUN and C C POON 28 Aug 1974 [29 May 1973] 25461/73 Heading H1B A dry cell comprises a zinc negative electrode, in the form of a tube 1 open at both ends, the length of this tube being substantially the same as that of the depolarizing dolly 7 within the cell, the cell also having a casing of a plastics material comprising a cylindrical sleeve 16 and a bottom 2 which may be integral with the sleeve and a tongue 5 extending from the zinc tube and passing through the casing. The thickness of the zinc tube is defined in terms of a voltage of the cell such that when the cell voltage falls to 0À75 volts, the zinc is substantially consumed. A moulded plastics top 17 is provided to accommodate a carbon anode 4 in the depolarizing dolly and the plastics bottom is provided with a raised portion (8) and teeth (9), Fig. 3a (not shown) to centralize the anode and dolly. An alternative moulded bottom is described, Fig. 6a (not shown) which provides a space for excess electrolyte. In a further embodiment, Fig. 10 (not shown) the tube is not a complete cylinder and has a gap between adjacent longitudinal edges when the cell is assembled. Solid electrolytic paste is preferably used and this is either placed around the dolly and the zinc placed around that, or it is placed on the inside of the zinc cylinder prior to assembly of the cell.
Patent GB-206487-A (GB)
Title: Improvements in or relating to the manufacture of emulsions of bismuth salts
IPC: A61K9/00
Filed: 1923-10-12
Abstract: 206,487. Hoffmann-La Roche & Co. Akt.-Ges., F. Nov. 1, 1922, [Convention date]. Emulsions, making; hypodermic injections; medicines for internal use.-Emulsions in oils of bismuth salts of higher fatty acids, suitable for hypodermic. intravenous, intramuscular or other parenteral injections, are prepared by dissolving the bismuth salts in a volatile organic solvent, mixing the solution with the oil and removing the solvent by evaporation. Suitable oils are natural oils, synthetic fatty acid esters and mineral oils. In examples, bismuth oleate is emulsified in olive oil, almond oil or paraffin oil, using ether as the solvent; the bismuth salt of tartaric acid di-iodide in olive oil using ether, benzene or petroleumether as solvent; and the bismuth salt of linolic acid in almond oil with ether as solvent. In all cases the solvent is evaporated first at atmospheric pressure and finally in vacuo.
Patent GB-483538-A (GB)
Title: Improvements in and relating to amplifying circuits
IPC: H01J40/14
Filed: 1937-09-20
Abstract: 483,538. Valve amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 20, 1937, No 25508. Convention date, Sept. 19, 1936. [Class 40 (v)] To prevent current flow between cathode 5 and control grid 7 of a valve fed with alternating current, a space charge electrode 8 is provided which is arranged to be negatively charged whenever the control grid becomes positive relative to the cathode. The desired potential relationship is obtained by connecting electrode 8 to a point of alternating current source which is opposite in sign to the control electrode when the cathode is a reference point. A resistance 21 and condenser 20 are included in the circuit of grid 8 to prevent random discharge by cathode 5 when all the electrodes are at substantially zero potential. A screen grid 9 may also be provided if desired. The invention is applied to an amplifier for a photo-electric cell, the amplified currents being used to trigger a discharge device 12.
Patent GB-1116867-A (GB)
Title: Air valve lift control in carburetters
Inventor: CAISLEY CHARLES FREDERICK
IPC: F02M7/17
Filed: 1966-06-08
Abstract: 1,116,867. Carburetters. ZENITH CARBURETTER CO. Ltd. May 22, 1967 [June 8, 1966], No. 25559/66. Heading F1B. A carburetter comprises a valve 14 constituted by a slide movable transversely in the induction passage 11 of the carburetter and connected to a movable wall 19 separating two chambers 20, 21 and responsive to differential pressures in the chambers produced by the pressure drop created in the induction passage by flow of air past the slide. One of the chambers is connected to the induction passage on the downstream side of the slide, by a first passage means and to a source of air at substantially atmospheric pressure by a second passage means, at least one of the first and second passage means having an effective cross-sectional area which varies with the position of the slide. Both of the chambers may be connected to the induction passage on the downstream side 25 of the slide and one of the chambers in which pressure acts to urge the slide outwardly may be connected to the source of air at substantially atmospheric pressure by passage means the area of which is increased as the slide moves outwardly over at least a part of its range of movement. Both of the chambers may be connected to the source of air at substantially atmospheric pressure and one of the chambers in which the pressure acts to resist outward movement of the slide may be also connected to the induction passage on the downstream side of the slide, the passage means connecting the last mentioned chamber to the source of air at substantially atmospheric pressure being so arranged that its effective cross-sectional area is decreased by outward movement of the slide. The diaphragm may be replaced by a piston slidable in a cylinder.
Patent GB-631373-A (GB)
Title: Improvements relating to methods of, and apparatus for, forming a protective coating on a web of carbon paper
IPC: B05C1/08
Filed: 1947-09-19
Abstract: 631,373. Coating webs; coated fabrics. KOLOK MANUFACTURING CO., Ltd., DUMONT, E. S., and BURDETT, G. F. Sept. 19, 1947, No. 25611. [Class 140] A process of coating a web of carbon paper with a fusible protective material consists in applying the fused protective material over the coloured transferable composition at such a temperature that it will soften the dope and become adherent to it but will not melt the dope so as to become intimately mixed with it, the web passing over a guide member maintained at a temperature below the fusing temperature of the protective material but high enough to render the dope momentarily soft before both the dope and the protective layer are cooled below the setting temperature of the protective material. A suitable coating material is a wax such as candelilla, carnauba, beeswax or spermacetic, or mixtures thereof, and may have added a non-staining pigment or dye. A suitable wax or mixture of waxes is made up to have a melting point of 65‹ C., and the melting point of the dope on the carbon paper is higher than this, e.g. 80‹ C. The guide member is maintained by thermostatic control at 40‹ C. and the work may be chilled by rollers at about 15‹ to 20‹ C. The wax is heated to 95‹ C. and is still at about 90‹ C. when being applied. An apparatus for use in the above method comprises a steel roller d rotating in a steamjacketed container c for the fused wax, a rubber covered printing roller f, and an impression roller h whose temperature is thermostatically controlled. Associated with the steel roller d is a doctor roll e. The web of doped carbon paper g passes from a roll q over adjustable guides r, impression roller h, rollers t<SP>1</SP>, t<SP>2</SP>, t<SP>3</SP>, over guides n and is slit, if required, by knives z and z<SP>1</SP>, after which it is coiled into reels v. The impression roller h constitutes the heated guide member, rollers t<SP>1</SP> and t<SP>2</SP> are chilling rollers and rollers t<SP>2</SP> and t<SP>3</SP> act as pulling members, tension in the web being produced by frictional driving clutches on the rewinding spindles v<SP>1</SP>. The machine is driven by a motor s through a gear-box w and driving belts x. The motor may be controlled in speed by the usual means such as a rheostat or a constantspeed motor may be employed and the speed of the web varied by adjusting the gear-box w. Drag is applied to the web as it unwinds from the roll q by an adjustable hand brake y. The tank c is carried by an auxiliary frame b mounted on wheels which in use is secured to the main frame a. The assembly of rollers d, e, f is supported by a carriage k adjustable by a screw l over the tank c towards and away from impression roller h. Each of the rollers e and f is separately adjustable on this carriage for which purpose roller e is mounted on a slide m and roller f upon a slide o being adjusted by screws n and p respectively.
Patent GB-304806-A (GB)
Title: Improvements in or relating to the manufacture of yarns or threads, and apparatus therefor
IPC: D01H7/86
Filed: 1927-09-28
Abstract: 304,806. British Celanese, Ltd., Dickie, W. A., Platts, T. H., and: Latham, L. Sept, 28, 1927. Spindle apparatus. - In twisting and doubling yarns or threads of fibres or filaments of any kind, especially yarns or threads of cellulose acetate or other artificial silk filaments or fibres, and particularly in twisting yarns or threads of high twist especially those known as crÛpe threads for the manufacture of natural or artificial silk crepe fabrics, the yarn is drawn from a rotating bobbin 1 through a floating ring 11, disc flyer, spiral, or equivalent so that it follows a balloon-shaped path, and, bearing against a disc, flange, or annular shoulder 9 fast on the spindle, passes to a guide 13, preferably fixed and centrally arranged over the spindle. The disc 9 is formed on a member 8 which bears against or is screwed, as shown in Fig. 4, into a lower member 5, the flange 7 of which may be chamfered to facilitate threading. The winding-bobbin 15 is preferably driven by a roller 16 to ensure a constant linear speed of the yarn. The bobbin may be traversed to lay the yarn, or a reciprocating guide 14 may be provided, or the guide 13 only may be used, either it or the bobbin being reciprocated.
Patent GB-629895-A (GB)
Title: Improvements in the control of the current supply to electro plating vats
IPC: C25D21/12
Filed: 1946-08-28
Abstract: 629,895. Automatic current control systems. ELECTRO-CHEMICAL ENGINEERING CO., Ltd., and SMART, A. Aug. 28, 1946, No. 25698. [Class 38 (iv)] A device for controlling the current supply to an electroplating vat from a rectifier or other unidirectional source is characterised by an electro-magnetic relay device controlled by a resistor R<1> connected across the vat terminals and by a shunt device R<2> in series with the current source, the relay device being arranged when energized in one direction or the other to vary the output voltage of the source of current supply to the vat to obtain a constant current density in the vat. As shown, a polarised impedance relay comprises a magnetic core m and a permanently magnetized armature m<1> arranged. to engage contacts c<1> or c<2> to raise or lower the voltage supplied at S. The core m has a coil n<1> connected across the device R<2>, a voltage coil p<1> connected to sliding contacts D and E on the resistor R<1>, and a bias coil o<1> connected to the junction of R<1> and R<2> and the sliding contact D. The coils o<1> and p<1> are arranged to assist each other and are opposed by the coil n<1>. The direction of movement of the armature m<1> therefore depends on whether the flux due to the coil n<1> is greater or less than that due to the coils o<1> and p<1>. Initial setting is made by first placing in the vat a test article of known surface area and adjusting the contact D until the required current is obtained under the control of the impedance relay and then replacing the test article by one having a surface of the maximum area for which the apparatus is designed and adjusting the contact E until the same current density is obtained. The flux through the coils o<1> and p<1> varies according to the voltage across the vat' and therefore, according to the surface area of the article in the vat. The Provisional Specification describes an arrangement wherein instead of using an impedance relay, two relays respectively controlled through oppositely connected rectifiers 'are provided ; alternatively the relays may be operated by thermionic valves.
Patent GB-584819-A (GB)
Title: A new anthraquinone dyestuff
IPC: C09B5/36
Filed: 1944-12-22
Abstract: An anthraquinone dyestuff is obtained by reacting a 2-p-halogenobenzoylaminoanthraquinone with 4-aminoanthraquinone-2 : 1-(N)-benzacridone, e.g. in nitrobenzene or naphthalene solution preferably in the presence of an acid binding agent such as sodium carbonate and a copper-containing substance such as cuprous chloride. In examples, 4-aminoanthraquinone-2 : 1-benzacridone is reacted with (1) 2-p-bromobenzoylaminoanthraquinone, (2) 2-p-chlorobenzoylaminoanthraquinone. 2-p-Halogenobenzoylaminoanthraquinones are obtained by reacting 2-aminoanthraquinone with p-halobenzoyl chloride.  The halogen atom may be chlorene or bromine.  4-Aminoanthraquinone-2 : 1-(N)-benzacridone is obtained as described in Specification 587,006.
Patent GB-469918-A (GB)
Title: Improvements in fluid reaction apparatus
IPC: F04D29/32
Filed: 1936-09-22
Abstract: 469,918. Fans. TORRINGTON MANUFACTURING CO. Sept. 22, 1936, No. 25779. Convention date, Dec. 2, 1935. [Class 110 (i)] A fan blade, with the greater part of its margin convex, is trough shape with longitudinal channel and arcuate sides, the blade being secured with the channel at a substantial angle to a radius on the axis of revolution. The blade 10, Fig. 1, has a plane area 13 with curved entering and trailing parts 14, 15 merging on parallel zones 16, 17. The part 14 is curved to a substantially greater radius than that of the part 15, and has a greater area. Each blade has a greater width than length. The blades are secured by offset lugs 25, so forming lobes 18, 19 which overlap lobes on adjacent blades. In a modification, Fig. 6, opposed blades 30 are connected by a bridge 31, integral with or welded to the blades. The offset portions 24, Fig. 1, and 40, Fig. 6, are set in at an angle to form centrifugal impeller elements.
Patent GB-773847-A (GB)
Title: Improvements in or relating to disc brakes
IPC: F16D55/2255
Filed: 1955-09-09
Abstract: 773,847. Disc brakes. SOC. D'INVENTIONS AERONAUTIQUES ET MECANIQUES, S.I.A.M. Sept. 9, 1955 [Oct. 16, 1954], No. 25914/55. Class 103 (1). In a " spot-type " disc brake a brake disc 1 is rigidly secured for rotational movement with a vehicle wheel (not shown) and braking segments non-rotatably mounted on each side of the disc are adapted to move parallel to the axis of the wheel and the disc to frictionally engage the radially extending sides of the disc ; wherein the means for causing the segments to approach one another comprises two members mounted for rotational movement about an axis at right angles to the axis of the wheel and disc; one of the members embracing at the same .time the other member and the pair of braking segments. In the embodiment illustrated, the brake disc 1 rigidly secured for rotational movement with a vehicle wheel (not shown) is adapted to be frictionally engaged by non-rotatable braking segments 5, 6 carrying friction linings 51, 6<SP>1</SP> respectively. The segments are carried on cylindrical rods 4, 4 parallel with the axis of the wheel and disc, mounted within the two branches 3 of rigid support 2. A member 8, adapted to oscillate on a shaft 7 carried by the branches 3 at right angles to the wheel axis, is bored parallel to the axis of the wheel and disc to form a cylinder 11 in which a piston 12 is adapted to move. A U- shaped member 13, mounted so as to oscillate on shaft 7, is provided with two arms 14, 15 enclosing between them the two braking segments 5, 6 and member 8. When fluid under pressure is supplied via conduit 17 to the space between the rear of the piston 12 and the end of bore 11 the member 8 and the piston 12 tend to separate from each other. During the resulting movement, the piston 12 applies pressure to the abutment 15a, whilst the boss 18 is forced against the segment 5 which then applies the friction lining 5<SP>1</SP> against one radially extending side of the disc 1. At the same time, the effort exerted by the piston 12 on the arm 15 causes the member 13 to oscillate about the shaft 7 thus causing the abutment 14a to be forced against the segment 6 so that the disc 1 is equally pressed on its two faces by the friction linings 51, 61 with pressure proportional to that of the fluid. A cam member 19 is provided between the arm 15 and the tail 16 of member 8 and is adapted to move about a spindle 20 in order to apply the brake mechanically. There may be a series of the above braking devices provided around the axis of the wheel and the support 2 may be completely annular, except where the oscillating members are housed, to protect one side of the whole braking arrangement and a steel sheet metal cover may be provided and arranged on the opposite side to the support 2, the assembly then constituting a casing which completely encloses the members of the brake.
Patent GB-1029334-A (GB)
Title: Means for sealing a movable rod-or shaft-like transmission element
IPC: F16J15/52
Filed: 1964-06-23
Abstract: 1,029,334. Seals. M. M. DUNKEL, [trading as E. LEYBOLDS NACHFOLGER]. June 23, 1964 [June 29, 1963], No. 25986/64. Heading F2B. A movable rod- or shaft-like transmission element 2, 21 is sealed where it passes through a wall 4, 5 separating zones 6, 7 of different pressures by means of a membrane 1 and by means of a locating member 3 connected to or, as shown, integral with the element and situated on the lower pressure side of the membrane, the member 3 having a sealing surface co-operating with a conformably-shaped seat 31 in the wall 4, 5 and allowing the element 2, 21 to perform a tilting and/or a rotary motion. The membrane 1 may be made of metal or of flexible synthetic plastic material. A nut 23 on the threaded portion 23 of the transmission element is tightened to press the sealing surface 241 of a washer 24 and the flat surface 32 of member 3 against opposite sides of the membrane, but is left slack enough to allow rotation of the shaft with respect to the membrane.
Patent GB-784940-A (GB)
Title: Improvements in or relating to noise suppressor apparatus for jet-propulsion engines
Inventor: CAVE-BROWNE-CAVE THOMAS REGINA
IPC: B64F1/26
Filed: 1954-09-09
Abstract: 784,940. Silencers for jet propulsion engines. EXPANDED METAL CO., Ltd. Sept. 9, 1955 [Sept. 9, 1954], No. 26206/54. Class 7(2) A silencing unit for use when testing or running-up jet-propulsion engines comprises a tunnel-like casing to receive the exhaust gas discharge from the engine or the jet-pipe J of an aircraft on the ground, the casing including converter and diffuser sections C, D. The cross-section of the section C changes gradually from a circle at the mouth thereof to a rectangle of relatively narrow width at the point of mergence with the section D, and the cross-section of the latter is rectangular, two opposite walls thereof extending parallel to the axis of flow of the gas stream and at least one of the other two opposite walls being at an angle to that axis to provide an expanding cross-section by which the rate of flow is slowed down. As shown in Figs. 1 and 2, the section C has divergent side walls 10 which together with convergent upper and lower walls 3, 4 provides a cross-section rectangular in shape at the junction of the section with the diffuser section D; the latter has divergent side walls 7, 8 and upper and lower walls 9 parallel with each other and the the longitudinal axis X of the gas stream. That end of the section C positioned adjacent the jet pipe J is flared to provide an annular opening 12 through which air is drawn to cool the gases. Surrounding the section D is a casing 16 which extends beyond the discharge end of the duct and is formed with a flared mouth 16<SP>1</SP> so that additional cooling air is drawn into the space 17 between the casing and section by the ejector action of the gases issuing from the duct; the outer surface of the duct is provided with spikes, fins or plates 20, additional plates 21 being attached to the interior of the casing 16 so as to provide a tortuous path for the cooling air, or fins or baffle plates extending parallel to the air flow may be used. The section D, which may be arranged with the major dimension thereof horizontal, vertical or at any intermediate angle, is provided with an extension in which is arranged layers or folds of expanded metal or internal fins or other obstructions to reduce the speed of the discharging gases. The unit is mounted on a undercarriage having a motorized wheel 33. In a modification, an air inlet 30, Fig. 4, is provided at the - junction of the sections C, D, the section D having parallel side walls and an upper wall 27 at an angle to the lower wall 28, and a pivoted baffle 31 of expanded metal the angularity of which is adjustable to enable the outlet of the duct to be varied as desired; both the sections C, D may be made of expanded metal.
Patent GB-1310948-A (GB)
Title: Oil pressure jack for lifting operations
IPC: E02B17/08
Filed: 1970-06-01
Abstract: 1310948 Step-by-step jacks KAWATETSU KIZAI KOGYO CO Ltd 1 June 1970 [4 June 1969 13 Oct 1969] 26242/70 Heading B8J A step-by-step hydraulic jack A comprises a piston-rod 1 attached to a piston 2 sliding in a cylinder 3. Similar clamps 5, 9 are respectively attached to the rod 1 and the cylinder 3. Each clamp, e.g. 5 has a number of segments 6 urged upwards by a spring 8 into engagement with conical surface with which the assembled segments 6 mate. The jack climbs a rod 13 having stop shoulders 14 with which the clamps 5, 9 co-operate. The shoulders 14 are protected inside the jack by a guide 4. A number of the jacks may be used in parallel in construction work. E.g. as shown in Fig. 2 three rods 13 are suspended from a supporting structure 15 through piston and cylinder load equalizers 16. The cylinder chambers 19 of the load equalizers 16 are interconnected by conduits 20, 20a, 20b, 20c, initially pressurized before starting operations and then isolated by valves 21, 22 to ensure even sharing of the load (not shown) between the jacks.