baber/WOPTO huggingface dataset:
Patent GB-628280-A (GB)
Title: Improvements in or relating to control mechanism for aircraft engines
IPC: F02D9/00
Filed: 1947-01-29
Abstract: 628,280. Fluid-pressure servomotor-control systems. WEBB, R. H. Jan. 29, 1947, No. 2836. [Class 135] In automatic boost control apparatus for aircraft engines, the movement of a servopiston operating the throttle valve jointly with the pilot's control lever and in accordance with the boost pressure, is limited in the throttle-opening direction by an adjustable stop in the path of the servopiston or of a part moving therewith, means being provided for moving the stop to give a different range of movement to the servopiston. The throttle valve 18, Fig. 1, is operated by a floating lever 17 linked to the pilot's lever 21 and to a piston 13 movable in a cylinder 14 under the control of a valve 12 actuated by a capsule 10 subject to induction pipe or supercharger delivery pressure through a duct 11. The datum pressure is adjustable by a cam 24 connected to the pilot's lever by a lever 23 and a link 22. The piston 13 is pressed in the throttle-opening direction by a spring 15 against a stop-rod 25 pressed outwardly by a spring 26 against a cam 27 operated from the pilot's lever. The invention is particularly suitable for arrangements in which the movements of the pilot's lever and the throttle are directly proportional to one another. The cam 27 is arranged to permit outward movement of the stop at the point in the travel of the lever 21 at which the automatic control by the capsule 10 becomes effective, i.e. the point at which the pressure on the capsule causes the piston to move away from the stop 25. Beyond this point therefore an additional throttle opening movement permits the maintenance of a selected boost to a greater altitude than would be the case without the stop. In the case of engines fitted with dive-braking airscrews, the cam 27 may be shaped to give a desired inward move. ment to the stop 25 to ensure that the throttle movement is less than proportional to that of the pilot's lever in its initial stages. Alternatively such inward movement may be effected by an over-riding mechanism operated by the usual dive-braking switch. -Where higher compression pressures are attainable, e.g. by the injection of methanol and water, the cam 27 is shaped so that the stop first moves outwardly, then when the higher boost pressures are reached moves inwardly, and finally moves outwardly again. In a modification, the stoprod is operated by a spring-loaded diaphragm alternately subject to atmospheric pressure and to the suction pressure of the supercharger by a pilot valve under the control of the pilot's lever. Where the angular movement of the pilot's lever is substantially greater than that of the throttle lever, the throttle-opening is effected mainly by the capsule 10 and if necessary the stop-rod may be advanced to achieve some closing movement of the throttle under such conditions as over-speeding or changing the blower gear ratio at low altitudes.
Patent GB-1362062-A (GB)
Title: Forming loops or bights
IPC: D07B1/18
Filed: 1972-01-18
Abstract: 1362062 Forming loops in ropes or cords WILLIAM KENYON & SONS Ltd 18 Jan 1972 [21 Jan 1971] 2840/71 Heading D1T A plaited or braided rope or cord of tubular cross-section has an end portion bent as a loop within a loop, the portion immediately adjacent the end A extending away from the loop and either lying within the rope as in Fig. 4 or being secured to the outside thereof. To make the loop a splicing needle, having an eye at its pointed end, is inserted at B, Fig. 2, into the centre of the rope and is pushed inside the rope to emerge at C. End A is then threaded through the eye of the needle and pulled through the length BC coming out at B on withdrawal of the needle, so thai B and C are at substantially the same location. Fig. 4 and thus the rope is looped within itself. The needle is then inserted into the single body of rope at a suitable point D and out of the rope at point C. The end A is threaded into the eye of the needle and the end A is pulled into the rope as in Fig. 4. Alternatively the end A may remain outside the rope and be bound thereto. The completed loop can be dipped in a setting solution, such as a solution of nylon in industrial methylated spirits, or an aqueous latex solution or water glass.
Patent GB-565926-A (GB)
Title: Improvements in and relating to steam generating plant
Filed: 1943-02-22
Abstract: 565,926. Feed-water supply systems for steam boilers. STERN, R. Feb. 22, 1943, No. 2912. [Class 123 (ii)] A steam generating plant comprises a boiler 1, raw water tank 3, feed pump 4, water softener 11, and associated pipes 5, 6, 7 controlled by a valve 8, or a pair of coupled valves, one in each of the pipes 5, 6, the arrangement being such that the boiler may be supplied alternatively and alternately with untreated water direct through the pipes 5, 7 and treated water from the softener 11 through the pipes 6; 7. The valve 8, or valves, is preferably operated automatically either by a control 12 actuated by flow meters provided in the pipes 5, 6, by timing mechanism, or by an alkalinity meter fitted on the boiler. The installation also includes a sludge ejector 2, e.g. of the kind described in Specification 305,977, [Class 123 (ii)].
Patent GB-524346-A (GB)
Title: Improvements in processes for preparing bile acids having a ketonic function
IPC: C07J75/00
Filed: 1939-01-27
Abstract: 524,346. Bile acid derivatives. CHIMIE ET ATOMISTIQUE. Jan. 27, 1939, Nos. 2925 and 2926. Convention dates, Feb. 1, 1938 and Jan. 9, 1939. [Class 2 (iii)] Hydroxy bile acids are converted into the corresponding keto-compounds by oxidizing the acids or one of their derivatives such as salts or esters by means of bromine. The hydrobromic acid produced is eliminated from the reaction mixture as it is produced by carrying out the oxidation in the presence of a body in which it is absorbed such as sodium bicarbonate. The oxidation is preferably carried out at about 0‹C. If the bile acids to be treated have more than one hydroxy group, and it is not desired to oxidize all hydroxy groups, the groups which are not to be oxidized may be protected by substitution. In an example cholic acid in aqueous solution is neutralized by alkali, sodium bicarbonate is added, followed by bromine. The dehydrocholic acid which is formed gradually precipitates. The oxidation may also be carried out in stages.
Patent GB-323140-A (GB)
Title: Improvements in or relating to perambulator and like brakes
IPC: B62B5/04
Filed: 1929-01-29
Abstract: 323,140. Co - operative Wholesale Society, Ltd., and Evans, G. E. Jan. 29, 1929. Addition to 298,502. Locking by frictional detents.-The brake for perambulators described in the parent Specification is modified by the arrangement of the toothed rack j and the laterally placed arm e horizontally. The brake shoe h is pivotally connected to the arm. 'As applied to the chassis described in Specification 275,391, [Class 108 (ii), Road vehicles, Undercarriage details &c. for], the arm e is pivoted at e<1> to an adjustable extension d on a bracket c clamped to a side bar a of the chassis. The arm e is bent so that one end passes to the rear of the vehicle and is fitted with rubber caps g for foot operation. The two ends of the arm e may be relatively adjustable.
Patent GB-1278553-A (GB)
Title: Attachment for fishing reels
Inventor: DRIVER CYRIL EDWARD
IPC: A01K89/00
Filed: 1971-01-22
Abstract: 1278553 Line winders C E DRIVER 22 Jan 1971 2971/71 Heading A1A An attachment for transferring fishing line 16 from a storage drum 15 to a fixed reel 19 comprises a base 1 having a central hole 3, in which rod 2 is a push fit, and three octagonal sockets 8 near the edge of the base which receive octagonal protrusions of arms 4. The arms 4 each have a cranked portion 7 and a tapered portion 5 and may be of cruciformsection for strength. Arms 4 are fitted over the spinning head 12 by first selecting a position of each arm 4 in corresponding socket 8 so that tips 5 lie on a circle slightly less in diameter than head 12 and then flexing arms 4 so that once placed on head 12 they will grip the head by means of the rubber sleeves 6. A storage spool 15 on line 16 is now secured on shaft 2 and line 16 is passed through a hole 11, over pick-up bail 17 of line guide 18 and attached to reel 19. Crank 20 is now rotated to effect line transfer.
Patent GB-688232-A (GB)
Title: Improvements relating to motor vehicle power transmission systems
IPC: F16H45/02
Filed: 1951-02-07
Abstract: 688,232. Operating clutches change-speed control. HUMBER, Ltd., MILLER, A. C., KAMPER, A. M., and BERRY, G. Feb. 7, 1951, No.3040/51. Class 80 (ii). [Also in Groups XXIX and XXXV] On a vehicle, an electromagnetic friction or eddy-current clutch 9, for locking up a hydrodynamic torque-converter of the overrun reactor type, is energised automatically through initially open contacts 15 closed by energisation of a relay-coil 32 by an engine-driven generator 14 above a predetermined engine speed (corresponding to 14 volts on a 12-volt system) at which torque - conversion under light load is not required, the clutchsupply circuit including also a switch 18 operated by an enginesuction loaded diaphragm 22 which releases the clutch below a predetermined value of engine suction, and a further paralleled switch 17 closed by an engine or vehicle-driven centrifugal governor 30 to energise the clutch irrespective of suction conditions when engine- or vehicle-speed rises above a predetermined maximum for torque conversion. The suction switch 18 enables a return to torque-converter operation to be made below the setting speed of the governor switch 17 by opening the enginethrottle which reduces engine suction sufficiently to open the switch 18. The relay 15 has also a hold-on coil 33 to maintain clutch energisation on deceleration to a considerably lower engine-speed (corresponding to 5 volts) for engine-braking. A. manual change-over switch 55 provides for alternative energisation from the battery 42 through additional normally closed relay-contacts 16 previously in series with the relay-contacts 15, but in this case acting alone. A further manual switch 56 maintains clutch energisation independently of the governor and suction switches 17, 18. In addition a manual control 40 of a following two or more speeds. and reverse gear has a spring-loaded lostmotion connection with the gear selector rod 41 through a casing 45 carrying earthed switch contacts 49 to complete a battery-fed circuit to a third relay-coil 43, opening the contacts 16, to cause temporary de-energisation of the lock-out clutch during a gear-shift. A clutch indicatorlight 57 and radio interference suppressor .58 are provided.
Patent GB-549819-A (GB)
Title: Improvements in or relating to combing machines
IPC: D01G19/10
Filed: 1941-03-06
Abstract: 549,819. Combing machines. NASMITH, J. W. March 6, 1941, No. 3046. [Class 120 (i)] The top comb of a Nasmith machine is carried by an arm 1 whose movement is effected independently of the drive of the nipper, and the point of lift of the top comb is regulated by a second arm 6 operated independently of the arm 1, and is independent of the point of its previous fall. The arm 6 carries an adjustable incline 9 for lifting the top comb. In operation, a bowl 4 on the arm 1 rests upon the upper surface of the arm 6, and after the combs have penetrated the tufts the arm 6 is slightly withdrawn, so that in the return movement of the bowl 4 along the arm 6 raising of the comb by the incline 9 is delayed. The moment of penetration of the tuft by the comb is determined by adjustment of the inclined surface 9 along the arm 6. Specification 13758/01, [Class 120], is referred to.
Patent GB-396427-A (GB)
Title: Improvements in and relating to fuels for internal combustion engines
IPC: C10L1/14
Filed: 1932-02-02
Abstract: Fuel for Diesel-type engines consists of a light Diesel oil with an addition of up to 2 per cent of an organic acid containing at least 14 carbon atoms in the molecule, to obtain improved lubrication of the pistons and cylinders.  Naphthenic acids and higher fatty acids are specified; they may first be mixed with other oils.  For example, to 500 kg. of 0,8 petroleum Diesel oil is added 1 kg. of commercial oleic acid or 3 kg. of 30-70 mixture of oleic acid and lubricating oil.  British Specifications 130,377 and 185,796, [both in Class 91, Oils &c.], and U.S.A. Specification 1,826,439 are referred to.
Patent GB-408083-A (GB)
Title: Improvements in or relating to horse shoe pads
IPC: A01L7/02
Filed: 1933-02-02
Abstract: 408,083. Horseshoes. GRAY, B. P., 14, Suffolk Street, Birmingham. Feb. 2, 1933, No. 3209. Addition to 379,086. [Class 67.] The horseshoe as described in the parent Specification in which a rubber heel-pad carried by a metal plate resting on the heels of the shoe is held in position by struts which bear against the sides of the shoe is modified by the use of separate bent sheet-metal holding members 15, Fig. 4, which are slotted so that they may be slipped over the ends 14 of the plate to rest against the ends of the pad 10, where they are retained by ears 24 with downwardly-turned tongues 31 disposed between the pad - and plate. In another modification the holding members are formed as bent-forward extensions 26, Fig. 6, of the ends 14 of the plate. Alternatively, the holding members may be separately formed and riveted to the plate or pad.
Patent GB-349590-A (GB)
Title: Improvements in binding rings or devices for turbo-generators and the like
IPC: H02K3/51
Filed: 1930-01-30
Abstract: Binding-rings or the like used in turbo-generators are made of a steel alloy containing 0,4-0,95 per cent of carbon, 1-5 per cent of chromium, 5-12 per cent of nickel, and 6,5 to substantially less than 10 per cent, for example 9,5 per cent, of manganese.
Patent GB-194102-A (GB)
Title: Improvements in entrenching tools
IPC: A01B1/02
Filed: 1922-02-06
Abstract: 194,102. Beverley, A. Feb. 6, 1922. Reversible handles; fixing by sockets with locking-catches.-An entrenching tool such as is described in Specification 109,822 has the ferrule A in which the haft B is fixed, formed with a hook to receive the point of the pick D, and with a spring lock 7 on the tapered end. The spring lock comprises one or more resilient tongues 8 formed by slits 6 cut in the end of the ferrule, the tongue having a projection 7 on the end which springs out into engagement with the end of the head or boss G of the tool after the ferrule has been passed through either of the sockets in the head. When the spade H is in position for use, as shown, the end of the pick blade D enters the hook C which is preferably made resilient. The hook holds the pick firmly, and also serves to protect the hand. When the ferrule is inserted in the other socket, with the pick and spade at right-angles to the haft, a pin 10 on the ferrule enters a recess in the head G and prevents rotation. A recess is made in the wood of the haft B under the spring catch 7 to allow of its moving inwards during insertion or withdrawal of the ferrule. A screw stud with a large head is inserted in the end of the haft to protect the end of the ferrule.
Patent GB-270405-A (GB)
Title: An improved construction of reinforced concrete posts
IPC: E04H17/22
Filed: 1926-02-08
Abstract: 270,405. Hull, H. A. Feb. 8, 1926. Concrete posts.-In concrete posts of the kind having a screw thread on the shank for sinking them in the ground, the posts are reinforced by longitudinal wires tensioned during the moulding of the posts by connecting their lower ends to a threaded bolt which is passed through the end of the mould and engaged by a nut. The, wires are spaced by any suitable means, and the tensioning bolt attached to the wires is left in the completed post.
Patent GB-639653-A (GB)
Title: Improvements in electro-static influence machines
IPC: H02N1/08
Filed: 1946-02-04
Abstract: 639,653. Influence machines. CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, and FELICI, N. Feb. 4, 1946, No. 3509. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 18, 1946.] [Class 35] In an electrostatic motor or generator of the conducting plate type in which the movable and stationary plates are of substantial thickness and so shaped.that field concentrations are prevented, the efficiency is improved by the use of a dielectric fluid having an " electrostatic quality " (defined as the product of the square of the dielectric strength and the dielectric constant divided by the density) not less than 10,000 units, and whose maximum density of energy is not less than 0.004 Joule per cubic centimetre. Examples of such fluids as at 20‹ C. are, ordinary air or nitrogen which may be mixed with 5-15 per cent of oxygen at a pressure of not less than 19 absolute atmospheres; hydrogen, ammonia or carbon dioxide at pressures greater than 25, 7, and 20 absolute atmospheres respectively. Specification 637,434 is referred to.
Patent GB-1510389-A (GB)
Title: Scanning ultrasonic detection systems
IPC: G01S15/96
Filed: 1976-01-29
Abstract: 1510389 Ultrasonic detectors; scanning sonars FURUNO ELECTRIC CO Ltd 29 Jan 1976 [18 Feb 1975] 03565/76 Heading G1G A display aid on a circularly scanned CRT display of an ultrasonic detection system (e.g. a sonar) comprises a bright radius C swept between two limits A, B (each made up from short arcs), and means to give a simultaneous audible indication if any displayed echo signal is swept through by the radius C. The limits A, B may be independently and variably set and are distinguishable by having different concentrations of short arcs.
Patent GB-593461-A (GB)
Title: Electric pulse generating system
IPC: H03K3/55
Filed: 1944-02-25
Abstract: 593,461. Impulse generators. STANDARD TELEPHONES & CABLES, Ltd. Feb. 25, 1944, No. 3576. Convention date, Feb. 27, 1943. [Class 40 (v)] In a pulse generator, a gas-filled valve is fired to develop a pulse in the cathode circuit, the pulse effecting the build-up of a potential controlling means for shunting the cathode circuit to define the trailing edge of the pulse. Gas-filled triode 10, fired by a triggering pulse when the A.C. fed over lead 20 is near its peak value, forms the leading edge 41 of a positive pulse on the cathode of valve 10. Condenser C2 charges over resistance R3, reducing the bias on gas-filled triode 12 until valve 12 fires, shunting the upper part of potentiometer R2 and defining the trailing edge 53 of the pulse. The fall in the A.C. voltage on lead 20 extinguishes valves 10, 12, condenser C2 discharging through the grid path of valve 12 acting as a hard diode. The duration of the pulse is determined by the time-constant circuit R3, C2 and the setting of potentiometer R2. Valve 10 may be biassed so that it fires at a point on the positive half-wave or D.C. may be used, the valves being extinguished by a negative impulse or the opening of the anode circuit of valve 10. Condenser C1 controls the shape of the leading edge 41 and may give an extension 76. As applied to a radar system, Fig. 3 (not shown), the modulator pulse triggers the device, edge 41 being coincident with the commencement of the time base trace. Adjustment of potentiometer R2 causing edge 53 to become coincident with the trailing edge of an echo, enables the range to be read from a calibrated dial. A phase-shifting device may be included in the lead 20 to ensure valve 10 triggering at the correct point in the A.C. mains cycle. Specification 593,467 is referred to.
Patent GB-720030-A (GB)
Title: Improvements in and relating to the production of cellulose acetate threads, filaments, fibres and the like
Inventor: SHARMAN ERIC PAUL
IPC: D01F2/28
Filed: 1952-02-12
Abstract: Threads and other filamentary products, including films, of cellulose acetate having an acetyl content of 58-62.5 per cent are produced by preparing a solution of the cellulose acetate in aqueous acetic acid by acetylation of cellulose using an acid catalyst, stabilizing the solution, so that it does not gel on standing for many weeks, by heating it in the presence of water, neutralizing the acid catalyst in the solution by the addition of ammonia or an amine or urea, and extruding the resultant solution (which is substantially free from metallic cations) into an aqueous coagulating bath which is also substantially free from metallic cations under such conditions that the acetic acid content of the bath does not exceed 40 per cent by weight and is preferably 10-30 per cent.  The cellulose acetate solution may be spun into water or dilute acetic acid, and the concentration of the acid may be allowed to increase until it reaches a figure, e.g. about 25 per cent by weight, suitable for recovery of the acetic acid, e.g. by azeotropic distillation with ethyl acetate. In effecting the acetylation reaction the preferred solvent is acetic acid, but other solvents such as methylene chloride may be used instead of or in addition to acetic acid, provided that they are removed and, if necessary, replaced by acetic acid, before or during the stabilizing step.  In an example, 100 parts of wood pulp pretreated with 100 parts of glacial acetic acid are acetylated with 260 parts of 90 per cent acetic anhydride in the presence of a further 500 parts of glacial acetic acid and 3 parts of sulphuric acid at a peak temperature of 45 DEG  C., whereafter 40 parts of water, 2 parts of sulphuric acid and 140 parts of acetic acid are added; the solution is stabilized by heating it at 60 DEG  C. for 75 minutes, and neutralized by adding 20 parts of triethanolamine dissolved in 100 parts of acetic acid.  The solution is filtered and spun into water, and the products are stretched 40 per cent while still wet and collected under tension. In other examples methylene chloride is present during the acetylation step and removed after the neutralization step by distillation, the methylene chloride being replaced by acetic acid to prevent gelling of the solution.  The solutions thus prepared are spun into water or aqueous acetic acid kept at 12-14 per cent concentration.  Specifications 3973/11, [Class 2 (ii)], 509,702 and 575,661 are referred to.
Patent GB-346888-A (GB)
Title: Improvements in and relating to moulding or shaping magnesite compositions
IPC: B28B7/38
Filed: 1930-02-04
Abstract: Moulds for forming articles of magnesite compositions, and screeds and ribs for defining and marking floors and like surfaces of this material cast in situ, are coated with a gelatinous or glutinous preparation prior to use, so that the magnesite will not adhere to them.  For example to 8 ozs. of gelatine dissolved in water is added 1 1/2 drams of salicylic acid dissolved in 2 ozs. of methylated spirit, with or without the addition of a small proportion of glycerine.  The mixture is brushed or sprayed on to the surfaces and allowed to dry.
Patent GB-1526483-A (GB)
Title: Self-propelled vibrating rollers
IPC: E01C19/28
Filed: 1977-01-28
Abstract: 1526483 Vibrating rollers ATKINSON'S OF CLITHEROE Ltd 28 Jan 1977 [30 Jan 1976] 3690/76 Heading B7H The roller drum 11 of a self-propelled vibrating roller is supported through annular rubber members 38, 42 on a frame 12 and is rotatably driven through the annular rubber member 38 by a hydraulic motor 15. A further hydraulic motor 14 has a drive shaft 14a connected through a universal joint 33 to a shaft 13 carrying joint 33 to a shaft 13 carrying out-of-balance weights 31, 32.
Patent GB-817394-A (GB)
Title: Improvements in or relating to fire extinguishers
IPC: A62C13/00
Filed: 1956-02-07
Abstract: 817,394. Manually-actuated valves. MORRIS, C. Feb. 6, 1957 [Feb. 7, 1956], No. 3724./M. Class 135. [Also in Group XXI] A valve for attachment to a fire extinguisher container A<SP>1</SP> consists of a ball B urged by a spring b and by the fluid pressure in the container towards a seat a, which may be slightly resilient and is secured by a nut a<SP>2</SP> and opened by a rod D having a concave end to engage the ball and actuated by a lever D<SP>1</SP> with a cam formation d<SP>2</SP>. The upper end of the body has a screwed cap d<SP>1</SP> with a handle d<SP>3</SP> to facilitate operation of the lever D<SP>1</SP>. The rod D, which may be hollow for the passage of fluid, passes through a sealing washer a<SP>4</SP> secured by a conical nut as and lock-nut a<SP>6</SP>.