baber/WOPTO huggingface dataset:
Patent GB-1300602-A (GB)
Title: Flail mower
Inventor: ALDRED EDWARD JOHN
IPC: A01D34/535
Filed: 1969-04-01
Abstract: 1300602 Flail mowers RANSOME SIMS & JEFFERIES Ltd 26 March 1970 [1 April 1969] 17043/69 Heading A1F A flail mower comprises cutting blades 12 suspended by flails 11 from a horizontal flail shaft 10 of square section. A flail comprises a rod curved to form a radial arm 29 and a pivot arm 28 which are substantially mutually perpendicular. The radial arm carries the cutting blade and the pivot arm is mounted in a bore 26, parallel to the axis of the flail shaft, in a lug or flange 25 on the shaft enabling angular movement of the radial arm about the axis of the bore. A spring clip 30 is inserted through a hole near the end of the pivot arm to retain it in the bore and also to maintain little or no free movement of the arm along the axis of the bore. This is aided by flaring one end 35 of the bore to make it a close fit with the curved portion of the flail rod 27. The cutting blade 12 may be generally hexagonal, square, oval, triangular or partially spherical in shape with an aperture through which the radial arm extends as a sliding fit, the outer end having a head 36 for retaining the blade. The blade can also be a 'V'-shaped plate 40, Fig. 4, having a central aperture in the apex and bevelled edges. The head on the arm this time comprises a crossbar 41.
Patent GB-236385-A (GB)
Title: Improvements in detachable legs for baby chairs and the like
IPC: F16B12/52
Filed: 1924-07-17
Abstract: 236,385. Neighbour, R. C., and Neighbour, F. C. July 17, 1924. No Patent granted (Sealing fee not paid). Joints.-The detachable leg 1 of a chair, table or the like, is secured to the chair bottom or table top 4, by means of a bolt 2 engaged by a nut 5 or other detachable fastening, and a steadying dowel or pin 3. Specification 219,793 is referred to.
Patent GB-1468202-A (GB)
Title: Diesel engine
IPC: F02B77/02
Filed: 1974-04-18
Abstract: 1468202 IC engine pistons and cylinders A CELORIO 18 April 1974 17120/74 Heading F1B [Also in Division F2] A compression ignition I.C. engine comprises a piston having a working portion 1 and a heat insulating cylindrical crown portion 2 which has an axial length more than half that of the working portion and is coaxial and integral therewith. The portion of the cylinder in which only the crown portion 5 reciprocates is not of smaller diameter than the rest of the cylinder and the crown portion forms with the cylinder a small annular gap 6 greater than the clearance between the working portion of the piston and the cylinder. The cylinder head 4 may be lined with refractory insulating material 4a and the crown portion of the piston  may have such material 5a on it. Instead of being lined, the head 4 may be formed with a cavity wall to reduce heat loss.
Patent GB-831113-A (GB)
Title: Improvements in or relating to electro-deposition of magnesium
Inventor: GIBSON ALLAN ROBERT
IPC: G21C21/14
Filed: 1951-07-19
Abstract: 831,113. Electro-deposition of magnesium. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Aug. 14, 1952 [July 19, 1951], No. 17126/51. Class 41. In the electro-deposition of magnesium metal, the electrolyte consists of a fused mixture of magnesium chloride, an alkali metal or alkaline earth metal chloride, and a minor amount of magnesium sulphide, preferably 1 to 5% by weight of the molten electrolyte. The process may be applied to plating metal surfaces, e.g. uranium or nickel, and to winning magnesium metal. In examples: (1) a uranium rod after cleaning in 50% sulphuric acid, is dried, and rotatably mounted in a molten mixture of equal parts of magnesium and potassium chlorides containing 4% of magnesium sulphide. Graphite anodes are used with C.D. of 140/360 amps. per sq. foot; (2) an electrolytic cell for producing magnesium metal consists of a cell 1 which may be heated, in which is mounted a hollow graphite cathode 3 within a silica sleeve 13, carrying a withdrawable stainless steel tube 10. A number of spaced graphite anodes 2 are provided, and the electrolyte consists of 60 mol. per cent MgCl 2  and 40% of CaCl 2  together with 3% of MgS. Temperature is maintained a little above the melting-point of magnesium, preferably at 680‹ to 700‹ C., and during electrolysis additional magnesium sulphide is added through a conduit 5 to maintain the required concentration. A small amount of magnesium fluoride may be added as a flux. A slow stream of argon is admitted through tube 10 over the surface of the molten magnesium which forms a pool at the bottom of the hollow anode, and is removed by lowering the tube 10, and lowering the pressure therein to fill the tube with the molten metal. The tube, then containing solidified metal, is withdrawn and a fresh tube inserted. Sulphur vapours and any sulphur dioxide pass through an opening 15 to a condenser system 16, 17.
Patent GB-251473-A (GB)
Title: Improvements in or relating to fountain or reservoir pens
IPC: B43K5/04
Filed: 1925-07-04
Abstract: 251,473. Pennington, A. July 4, 1925. Self-filling reservoir and stylograph pens; feed-bars. - The self-filling sac 4 in a reservoir pen is provided with a thickened mouth 4a to form an airtight joint with the interior wall of the barrel. The thickening may be integral with the sac, or in the form of a rubber or like ring secured in position. The barrel and point-section may be integral and the sac inserted from the rear end, a removable plug 5 being provided for this purpose. The sac may be compressed by a lever-operated device or by sliding the nib-covering cap 7 on to the rear end of the barrel, the air-vent 8 in the cap being covered by the finger, and the plug 5 being provided with an aperture 6. The upper end of the feed-bar 2 is inclined to facilitate the flow of ink. In a modification, the end of the feed-bar is inserted into the mouth of the sac, and the surface duct communicates with the interior of the sac by way of longitudinal and transverse passages in the feed-bar. When used in a stylographic pen, a perforated tube is inserted in the mouth of the sac, and the needlecairier is mounted on the end of the tube.
Patent GB-326107-A (GB)
Title: Improvements in or relating to flag staffs
IPC: G09F17/00
Filed: 1929-06-05
Abstract: 326,107. Burgess, W. J., and Anderson, P. B. June 5, 1929. Tubular posts; bases for posts.-In order to keep the flag 13 fluttering, a tubular post 2 to which the flag is attached, is provided near its upper end with apertures 9 through which air currents are forced. The air currents are produced by a fan 8 which is mounted on the spindle of a motor 6 supported by arms 7 in a base 1 having curved stepped walls 3 provided with air inlets 5. The post 2 is supported in a socket 4 on the base 1.
Patent GB-251804-A (GB)
Title: Improvements in or relating to means for automatically controlling the vertical adjustment of ladders
IPC: E06C5/16
Filed: 1925-07-06
Abstract: 251,804. Magirus Akt.-Ges., C. D., and Hetzelberger, F. July 6, 1925. Self-levelling apparatus for adjusting ladders, particularly fire-escape ladders, so that the rungs of the ladders will always be horizontal in their own plane, comprises a switch box mounted on a rung so as to swing longitudinally of the ladder about a spindle 20. A pendulum 5 is mounted on ball bearing 4 on a spindle 3 at right angles to the spindle 20. Solenoids 9, 10 associated with control valves 13, 14 are connected by wires 11, 12 and thorough sliding contacts 13<1>, 14<1> with contact strips 6, 7 separated by insulation 18. Current through the solenoids is broken when the spring contact 19 is in a central position which it occupies when the ladder is level, otherwise it rests on the contact 6, 7 and the appropriate solenoid is energised and operates the associated valve 13 or 14. The control valves admit pressure fluid to the hydraulic couplings which control the inclination of the ladder. Arrangements are made for switching out the solenoids when the ladder is to be adjusted by hand. The solenoids may be replaced by electric switching and the hydraulic gear by electric motors.
Patent GB-960010-A (GB)
Title: Improvements in or relating to domestic hot-water systems
IPC: F24D3/08
Filed: 1961-05-12
Abstract: 960,010. Water heating systems. E. H. PORTER. May 10, 1962 [May 12, 1961], No. 17362/61. Heading F4A. In a domestic water heating system a boiler 1 circulates water in a primary circuit including a flow pipe 4, a heat exchanger 3 and a return pipe 5, the circuit being replenished through a pipe 12 from a tank 13 whilst flow and return pipes 14, 15 to radiators are connected to the pipes 12, 5 respectively. Water for tap supply is heated in the heat exchanger to which it circulates from a cylinder 2 through pipes 6, 7, the cylinder having a hot water draw-off 17 and a cold water supply tank 18. The heat exchanger consists simply of a jacket fitted around a pipe of the primary circuit at a convenient point and the arrangement enables a hot water supply system to be easily adapted as a central heating system also.
Patent GB-439807-A (GB)
Title: Manufacture of substituted acid amides
Filed: 1934-06-12
Abstract: Substituted acid amides are obtained by treating a quaternary ammonium salt of an aryleneoxazole substituted in a -position to the nitrogen atom with a strong alkali and, if an alkali alcoholate be used, hydrolyzing the acetal so obtained by treatment with acid. Suitable alkalies include caustic alkali, sodium or potassium ethylate, piperidine or quaternary ammonium bases.  Heterocyclic bases are obtained by condensing o-aminophenol with any carboxylic acid and these are converted into quaternary bases by reaction with a dialkyl sulphate such as dimethyl sulphate or an alkyl halide.  In examples: (1) 2-ethylbenzoxazole dimethyl sulphate, (2) 2-propylbenzoxazole dimethyl sulphate, (3) 2-heptadecylbenzoxazole dimethyl sulphate, (4) 2-cyclohexylbenzoxazole dimethyl sulphate, or (5) furylbenzoxazole dimethylsulphate is heated with sodium ethylate to yield acetals and the acid amides obtained by treatment with acid; (6) 2-methylbenzoxazole dimethyl sulphate, (7) 2 - methyl - 5 - chlorobenzoxazole dimethyl sulphate, or (8) 2-methyl-b -naphthoxazole is heated with caustic soda to yield the acid amides.  Specification 439,539 is referred to.  2 - Heptadecylbenzoxazole, 2 - cyclohexylbenzoxazole and furylbenzoxazole are prepared by heating o-aminophenol with palmitic acid, cyclohexylcarboxylic acid or pyromucic acid.
Patent GB-421722-A (GB)
Title: Improvements in or relating to incubators
IPC: A01K41/00
Filed: 1933-06-19
Abstract: 421,722. Hatching-appliances. GLOUCESTER INCUBATOR CO., Ltd., Woodchester, and WRENTMORE, G. W., Woodchester, Stroud, Gloucestershire. June 19, 1933, No. 17423. [Class 5 (ii)] An incubator comprises a fan or fans each consisting of radial blades k attached to a hub h by means forming central apertures p and each mounted on a stub shaft d, extending through the wall or base of the incubator chamber, the said central apertures p cooperating with air inlet apertures b arranged around each fan spindle to draw in air which is distributed over a heating element n disposed in close proximity to the fan. A pin f on the shaft d engages slots g in the hub h, the fan being detachably secured in position by a wing nut l. The heating element n is in the form of an electrically heated coil mounted on insulating posts o and protected by a shield v. In a modification, the fan and heater are mounted on the inner member of a double wall of the incubator, air passing through apertures in the outer member at the base of the incubator into the space between the members and thence through apertures in the inner member arranged around the fan spindle. Several fans may be provided and means may also be provided to cut off some of the air inlets as required.
Patent GB-151758-A (GB)
Title: Improvements in, or connected with, artificial hands
IPC: A61F2/58
Filed: 1919-07-11
Abstract: 151,758. Blatchford, C. D., and Blatchford, W. A. July 11, 1919. Limbs, artificial.-In artificial hands in which the fingers are pivoted to the body portion of the hand, a yoke or frame is mounted to turn about the pivotal axis of the fingers and engage projections, which may be adjustable, upon them when operated by a cord, the fingers being held in their normal closed positions by springs connected to them and although opened by the cord may yet move independently relatively to one another so as to adapt themselves to the shape of the article being gripped. The first finger is preferably connected to the thumb by a link so that they act together and the grip of the fingers may be maintained independently of the springs by a second control cord connected to the thumb and forefinger by an additional link. The actuating- yoke which rocks on the pin d is shown at p, the stops against which it takes at q. It is operated by a chain n from the lever k, which is pivoted at l and is raised by the cord m connected to shoulder harness &c. The fingers are closed by separate springs f. The thumb is connected to the first finger by the link j. The second control cord r is connected to the lever s jointed to the thumb and connected to a return spring t. A hook u is secured to the body portion of the hand. In a modification, the main control is connected to the knuckle of the thumb and the other fingers attached by cords to a stirrup common to them all and having a single return spring, the simultaneous opening being affected by the yoke as before.
Patent GB-915895-A (GB)
Title: Gas dehumidification
Inventor: RYLATT JOHN ANTHONY
IPC: B01D53/26
Filed: 1960-05-18
Abstract: 915,895. Drying gas. RUSTON & HORNSBY Ltd. April 13, 1961 [May 18, 1960], No. 17484/60. Class 34 (1). [Also in Groups II and XXVI] A gas-drying apparatus comprises an expansion turbine with impulse blading, arranged to receive and expand moist gas sufficiently to freeze at least part of the moisture content, centrifugal frozen particle separation means positioned radially around the turbine, rotary compression means downstream of the turbine and mechanically coupled thereto, arranged to compress the dried gas to a desired pressure, and an extension of the shaft on which the compression means is mounted, the extension arranged to receive exterior power means to supply the difference between turbine output power and power absorbed by the compression means. Moist gas, e.g. natural gas, passes through nozzles 12 into an expansion turbine with impulse blades 13, the frozen particles so formed being centrifugally expelled by the blades through an annular gap in the turbine casing into a housing 14, where the particles fall into a trough 15 and melt, the resulting fluid being drained through a cock 16. The dried gas passes to a rotary compressor 17 mounted on the same shaft 18 and within the same casing as the turbine, is compressed to any desired pressure and is exhausted through volute 19 to an exit 20. An extension 21 of the shaft 18 carries a motor 22. The gas being dried acts as a lubricating medium for bearings 24, 25, 26. Gas passing into the housing 14 with the particles may pass through a line (not shown) to the inlet of the turbine and the exit 20 may have a by-pass valve and pipe-line (not shown) leading to the turbine inlet to introduce thereto a proportion of dried gas.
Patent GB-741169-A (GB)
Title: Improvements in or relating to sealing compositions
IPC: C08K3/22
Filed: 1953-06-24
Abstract: A sealant composition comprises a rubbery copolymer of a major proportion of a conjugated diolefin and an aryl substituted ethylene monomer copolymerized in a redox system at a temperature not exceeding 58 DEG  F. and vulcanized with 0.2 to 1.0 part of sulphur and 15 to 45 parts of iron oxide or calcium carbonate per 100 parts of copolymer.  Diolefins specified are butadiene, piperylene, 2,3-dimethyl butadiene-1,3, 2- or 3-methyl pentadiene-1,3, hexadiene-1,3 or -2,4 and isoprene.  The aryl substituted ethylene monomer may be styrene, a -methyl-, p-chloro- or p-methoxy styrene or vinyl naphthalene.  The copolymers may be produced in emulsion using as ingredients cumene hydroperoxide, ferrous sulphate, pyrophosphates, soaps and mercaptan modifiers.  Examples of the sealant compositions include also zinc oxide, boric acid, hydrogenated rosin, petroleum rubber softeners, rubber accelerators and di-o-benzamido-phenyl disulphide.  The compositions are useful in tubeless tyres, inner tubes, rubber balls and rubber swimming pools.
Patent GB-882593-A (GB)
Title: Improvements in or relating to transistor circuits
Inventor: ROBSON RONALD CHAPMAN
IPC: H03F1/30
Filed: 1959-05-22
Abstract: 882,593. Transistor amplifying circuits; amplitude modulation. SHELL RESEARCH Ltd. May 22, 1959, No. 17509/59. Classes 40(5) and 40(6). An amplifier of the "chopper" type uses a transistor "chopper" so connected as to overcome the effects of temperature drift. The collector and emitter impedances of transistor 1, Fig. 1, form, with resistors 2, 3 a balanced bridge network for the "chopping" signal, the balance of which is not disturbed by temperature drift of the transistor impedances; the "chopping" signal is introduced from a squarewave generator 5 into the base circuit of the transistor 1 by means of a tapped inductance 4. The signal to be amplified is applied to the collector circuit from the source 6 and "chopped" at the "chopping frequency" is taken from the collector circuit via transformer 8. It is amplified in A.C. amplifier 11, demodulated by phase-sensitive detector 10 which is also fed from square-wave generator 5 and the demodulated amplified signal is fed to utilization device 9. Any residual drift may be balanced out by using a pair of such transistor "choppers", each connected in a balanced bridge network. The transistors are connected emitter-to-emitter in series in the input circuit (Fig. 2, not shown) and have the A.C. output transformer shunted between the common point of the emitters and the centre of a resistive potentiometer connected across the collectors.
Patent GB-403308-A (GB)
Title: A door-securing device with an arm on the door and a swingable rail on the frame
IPC: E05C17/16
Filed: 1933-06-20
Abstract: 403,308. Door stays and fasteners; hinges. HELBIG, P., 64, Boddinstrasse, Neuk÷ln, Berlin. June 20, 1933, No. 17515. Convention date, June 25, 1932. [Classes 65 (i) and 65 (ii).] A device for limiting the opening of a door and for securing it in the closed position comprises a slotted bar d, Fig. 5, pivoted to a plate e on the door frame and adapted to engage a bracket b fixed on the door, the arm b having a flat T- head c with a narrow neck to fit the slot in the bar d ; the door can be released for full opening from the inside, and also, when in the limitedopening position, by means of a key from the outside. The invention consists in an improved pivot for the arm d, comprising a pin i carried in lugs g, h on the door-frame plate e and passing freely through the end of the bar d, which has a ball-shaped projection k, Fig. 1, engaging a corresponding recess in the lug g, a spring m being carried on a sleeve n on the pivot and bearing in a recess formed by a flange l on the arm d. The arm d is free to move to some extent in the plane of its pivot axis, against the force of the spring, to allow it to be disengaged from the bracket b and to accommodate movements of the door; the projection k serves to ensure that when the door is closed the bar d is in the correct position to pass freely over the T-head c of the arm b. The bar d can only be passed over the head c of the bracket b when the door is closed, and it then engages the nose of a member s fixed on the door-frame to keep it from swinging out of position for re-engagement when required. In order to disengage the bar d from the bracket from outside the door, the door is opened as far as possible to permit the entry of a hand, and a key v is placed on a pivot pin o provided at the bottom of the plate e ; the door is then closed, and during this movement the bar d engages a shoulder u in the key v, the key being thus caused to rotate on its pivot o and therefore camping the bar d off the end of the bracket b. In order to fasten the door in the completely closed position, a stop piece q, shown in underneath view in Fig. 2, is placed on the pivot pin o when the door is closed and the bar d is in engagement with the member s, and the bar d is then moved to engage with the bracket b and the member q. A second pin corresponding to the pin o is provided at the top of the plate e so that this plate can be inverted for use with doors opening the other way.
Patent GB-182680-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H31/02
Filed: 1921-06-27
Abstract: 182,680. Twiss, G. V. June 27, 1921. High-potential switches; actuating; latching; arc-rupturing devices.-Relates to outdoor airbreak high-voltage switches using pin insulators to insulate the operating-handle and mounted to rock to and fro to actuate the switch. The switch has two fixed insulators 11, 18 carrying the fixed contacts 16 and the switch-blades 17 pivoted at 20. A third pin-insulator 31 is connected through a lever 52, mounted on a spindle 51, to the operating-handle 57, which may actuate the three switches of a three-phase unit, Fig. 2. The insulator 31 is attached to a link 30, the other end of which is connected to a lever 35 pivoted on the same axis 20 as the blades 17. Two links 33 are pivoted at 34 to bell-crank levers 28 pivoted to the blades 17 at 23. The ends 29 of the levers 28 are shaped to engage and press back a pin 27 mounted between two spring-controlled locking- levers 24, which lock the blades 17 in the closed position. In operation, the handle 57 is depressed to rock the insulator 31. This constrains the crank 28 to rotate counter-clockwise, due to the pull of links 30, 33, and move the locking-pin 27 clear of the blades 17, until the pin 34 engages with the underside of the blades 17 and lifts them out of engagement with the fixed contacts 16. The contacts 16 are of inverted U-form placed side by side with two limbs adjacent. The blades 17 engage the outer sides of the outer limbs. Arc horns may be fitted against the contacts 16. Figs. 5 and 6 illustrate the pivot mounting of the pins 47 of the insulators 31. A bracing-block 42 has an upstanding part 43 bored to receive a bush 44 fitted on the spindle 51. A platform 45, carrying the pin 49, has a pair of lugs 46, 47 receiving the part 43 between them and bored to receive the bush 44, to which they are locked by pins 48. These lugs are provided with stops 50 to limit the travel of the insulators 31.
Patent GB-791992-A (GB)
Title: Improvements in or relating to hydraulic pump or motor
IPC: F01B3/00
Filed: 1956-06-07
Abstract: 791,992. Liquid-pressure engines. SUNDSTRAND MACHINE TOOL CO. June 7, 1956 [Sept. 19, 1955], No. 17601/56. Class 69 (2). [Also in Group XXVIII] An hydraulic pump of the swash plate type has its swash plate formed with a base portion 26 and a face portion 27 engaging the pistons and rotatable relatively to the base. The base 26 is formed with a groove 32 communicating with a pump inlet port 18 through passages 37, 34. The groove 32 is proportioned so that there is a larger area of liquid contact with the face portion 27 than the piston area in communication with the inlet port. The portions 26, 27 are thus slightly separated and leakage of liquid occurs for lubricating purposes. A restriction 38 is provided in the passages between the groove and the inlet port so that if the portions 26, 27 tend to separate unduly and thus increase the leakage path, the pressure in the groove drops and the face portion is thus retained in position. A groove 33 is similarly connected to a pump outlet port 19. The pump cylinder block may rotate and the base of the swash plate be stationary, or vice versa. The inlet and outlet ports 18, 19 communicate with inlet and outlet kidney ports 20, 21 which are eccentric to the axis of the cylinder block to give a quiet operation of the pump.