baber/WOPTO huggingface dataset:
Patent GB-956283-A (GB)
Title: A process of purifying recycle ammonia
IPC: C01C1/02
Filed: 1960-09-26
Abstract: A process of purifying recycle ammonia containing vinyl chloride by-product from the production of ethylene diamine from ammonia and ethylene dichloride, comprises absorbing the crude ammonia gas in a first pressure-tight absorber in an aqueous ammoniacal solution under an elevated pressure below that of the stage to which the ammonia is recycled, and then absorbing any residual ammonia gas in a second absorber under atmospheric pressure in water, vinyl chloride being vented from the second absorber. In the drawing impure gaseous ammonia at 10 atmospheres pressure enters absorber 2 via pipe 1, and is partially absorbed in 24% aqueous ammonia which enters via pipe 7. Absorber 2 operates at 6 atmospheres and 40 DEG  C. Unabsorbed ammonia and vinyl chloride leave the top of absorber 2 via pipe 3 and enter the second absorber 14 operating at atmospheric pressure and 40 DEG  C. Vinyl chloride leaves the top of tower 14 via vent 19 while the residual ammonia is completely absorbed in water fed to the top of absorber 14 via pipe 13. The solution drawn off the bottom of this absorber circulates through cooler 18 and re-enters absorber 14 about 2/3 of the way up it. 24% ammonia solution is drawn off absorber 14 through an overflow pipe 4 into a reserve 5 <PICT:0956283/C1/1> whence via pump 6 and pipe 7 it passes to junction 11 where it meets hot solution leaving the first absorber 2.  The two solutions are mixed, cooled in cooler 8 and pumped to the top of absorber 2. 35% ammonia solution is discharged from the bottom of absorber 2 via pump L into a pipe 12, and after addition of anhydrous ammonia or water to bring it to the desired concentration may be employed in treating ethylene dichloride.
Patent GB-1451444-A (GB)
Title: Latch assemblies
IPC: D06F34/20
Filed: 1972-07-14
Abstract: 1451444 Latch assembly HOOVER Ltd 9 Oct 1973 [14 July 1972] 33046/72 Heading E2A [Also in Division D1] A latch assembly, which may be incorporated in the fastening mechanism of a washing machine door to prevent opening of the door until the drum has stopped spinning, comprises a locking mechanism movable between fastening and releasing positions, a pneumatically operated valve arranged to hold the latch in its fastening position, the valve having an inlet, an outlet, and a porous wall for controlling the passage of gas through the inlet and/or outlet, and means for triggering the valve to cause gas to pass through the porous wall to permit the latch to be moved to its releasing position when a predetermined amount of gas has passed through the porous wall. The valve may include a flexible wall which carries a porous plug which provides both the inlet and outlet. In Fig. 1, which is a front elevation of an interlock of a washing machine door, and Fig. 2, which is a sectional side view on line A-A of Fig. I, door interlock link 11 is pivotally mounted on-pivot 12, e.g. on the washing machine frame 13. Hooked locking plate 14 is arranged to engage locking pin 15 and is integral with or connected to 11. Link 11 has a central hole 16 aligned with a collar 17 mounted on a shaft 18 which carries a control knob, operation of which controls the machine programme. When the machine is switched on, the control knob is pulled so that shaft 18 carries collar 17 (Fig. 2) into the hole 16. End 20 of interlock link 11 surrounds pin 19 connected to plate bolt 21 which is biased, by spring 23, towards keeper 22 which forms part of the machine. When the machine is switched off, the door may be opened by sliding bolt 21 to the right, which pivots link 11 in an anti-clockwise direction about pivot 12; if the machine is switched on, the door cannot be opened because of the engagement of collar 17 in hole 16. Control cam 25, carried around collar 17, has a periphery with a -constant radius over 270 but a decreasing radius for the remaining 90, a step 26 which is 10 to the right of the vertical in the 'off' position, and a cam follower or roller 27 resting on the smallest radius of the cam in the 'off' position. Cam follower 27 is carried by the limbs of U-shaped portion 28 of interlock arm 29, which is pivotally mounted on the machine frame at 31, carries pin 15, and is biased clockwise towards the cam by spring 32. Valve 33, carried on the end 20A of arm 29, comprises a flexible diaphragm 34 mounted on a stationary timer bracket 35 to form chamber 36 with a flexible wall. The valve inlet or outlet 37, in the form of a sintered brush permits the gradual admission or exclusion of air according to the movement of arm 29. During operation of the machine, arm 29 is moved anticlockwise such that pin 14 is engaged by locking plate 14; at the end of the operation, cam follower 27 will fall down 26 only when sufficient air has been admitted to chamber 36 to permit the clockwise movement of arm 29, i.e. about 40 seconds after the machine has switched off.
Patent GB-1381296-A (GB)
Title: Attenuation of water waves and control and utilization of wave- induced water movements
IPC: E02B3/06
Filed: 1971-12-03
Abstract: 1381296 Breakwaters; wave screens; floating barriers FMC CORP. 3 Dec 1971 [8 Feb 1971] 33075/74 Divided out of 1381295 Heading E1H The subject-matter is the same as that of the parent Specification 1381295 but the claims relate to the -method of attenuating waves.
Patent GB-1474535-A (GB)
Title: Industrial lift trucks
IPC: B66F9/10
Filed: 1974-07-26
Abstract: 1474535 Lift trucks; load engaging devices HI-SPACE SYSTEMS Ltd 4 July 1975 [26 July 1974] 33078/74 Heading B8H A lift truck of the kind in which a carriage 25 provided with load-engaging means 13, for example forks 30, is slidably guided for movement in a vertical direction on a mast 14 which extends upwardly from a wheel supported body 2 has the forks 30 arranged to be movable on the carriage 25 between a retracted position within the width of the body 2 and an extended position. The forks 30 are mounted on a frame 28 parallel to a web 5 connecting fore and aft body sections 3, 4 and forming a U-shaped space 12 therewith, the frame 28 being attached to the carriage 25 solely at one edge 29 and arranged to move between opposite ends thereof. As shown the forks 30 have telescopic sleeves 31.
Patent GB-968184-A (GB)
Title: Improvements in and relating to emergency flotation apparatus for aircraft
IPC: B64C25/56
Filed: 1963-08-21
Abstract: 968,184. Emergency floats for aircraft. UNITED AIRCRAFT CORPORATION. Aug. 21, 1963 [Sept. 7, 1962], No. 33079/63. Headings B7A and B7G. [Also in Division E2] Emergency flotation apparatus for an aircraft comprises a tubular member 50 (Fig. 4) secured in the bore of a wheel axle 34 of the aircraft landing gear and having an inflatable bag 60 attached to its outer end and enclosed by a releasably attached hub cover 71, a valve device being mounted in the tubular member and arranged to be actuated by the flow of gas from a gas supply unit 120 through the tubular member into the bag. The valve device (Fig. 5) includes a piston valve 92 mounted on a stem 96 on which are mounted vanes 26 surrounded by a ring 100. On the ring are two projections 112 which engage studs 114 to hold the valve against the pressure of a spring 118 in the partly open position shown. When gas is released from a gas generator 120, e.g. on operation of an immersion switch, the force on the vanes 96 rotates the stem 96 to release the projections 112 from the studs 114 and allows the valve 92 to open fully. Gas then enters the bag through openings 84 and the bag is inflated springing the hub cover 71 (Fig. 4) off its supporting beading 69. When the gas flow has ceased, the valve is withdrawn into the tubular member 50 and the bar is sealed. The valve device can be reset by withdrawing a pin 53 (Fig. 4) and withdrawing the tubular member 50, complete with bag and valve device, from the wheel axle, and rotating the stem 96, with a screwdriver engaging a slot 102 in the stem, so that the projections 112 engage the studs 114. The apparatus is shown fitted to a helicopter (Figs. 1-3, not shown) which also has a fixed flotation bag in its tail cone.
Patent GB-282081-A (GB)
Title: Improvements in carburetters
IPC: F02M7/02
Filed: 1927-12-08
Abstract: 282,081. Guignie, F. Dec. 8, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Spray carburettors.- The main fuel injection takes place through a flared nozzle 2 the lower aperture of which is at a slight distance from the upper face of an intermediate member 3 provided with an orifice 4. The member 3 has a relatively large cavity 5 containing a ring-shaped member 6 into which is screwed a plug 7 having a calibrated axial bore 9 and radial bores 15. The space 10 above the member 6 communicates with the space 14 between the members 2 and 3 through a number of circumferentially arranged ducts 11. The fuel, which is supplied from a float chamber 13 through a duct 12, normally stands at the level m-n, so that a layer of air exists between this level and the orifice 4. The member 7 can be readily removed bv unscrewing the cap 24 and rotating the milled head 8. The slow-running device is closed at its upper part by a plug 16 through an aperture 17 in which, engine suction is exerted. The outer tube 18 has ports 19 communicating through duct 21 with the air space in the float chamber. In this manner, air flowing to the slow-running device is freed from dust &c. and obstructions prevented. The lower end of tube 18 is closed by a plug 19 having a calibrated orifice 22.
Patent GB-323314-A (GB)
Title: Improvements in and relating to variable speed gears
IPC: F16D67/00
Filed: 1928-11-14
Abstract: 323,314. Brown, W. J. Nov. 14, 1928. Variable-speed epicyclic, gearing is controlled by two hydraulic clutches 13, 13a and a one-way detent 19 of suitable form. There is a sun gear 1 fast on driving-shaft 2 and a larger sun gear 11 fast on driven shaft 10. Triple planets 3 mesh with these gears respectively and with an internal gear 6 fast to a loose drum 7 adapted to be engaged by clutch 13a. The planet gears are carried by a disc 5 with a flange adapted to be engaged by clutch 13. The clutches are similar and comprise radial cylindrical cavities in a common block 12, the cavities containing pistons impinging upon shoes 15, 15<a> which run round upon eccentrics 16, 16a upon the outer members, whereby the pistons are reciprocated. The block 12 is connected through a sleeve 17 to a revoluble part of a detent 19. Oil from a reservoir 26 passes along inside a sleeve valve 20 and into the clutch cavities. In the configuration shown, the pistons all move freely and there is no drive. When valve 20 is moved a step to the right by lever 22, the oil in clutch 13 is trapped so that disc 5 is kept from turning backwards by detent 19. The triple gears 3 turn on fixed axes, yielding lowest speed. A further step to the right of valve 20 opens clutch 13 and closes clutch 13<a>. Drum 7 is held fast and the planets 3 roll round on it so as to drive gear 11 at middle speed. On further movement of valve 20, clutches 13, 13a are both closed and detent 19 overruns, the gearing turning solid on highest speed.
Patent GB-486317-A (GB)
Title: Method of and apparatus for the continuous steam distillation of high boiling point liquids
IPC: C11B3/14
Filed: 1936-12-04
Abstract: <PICT:0486317/III/1> <PICT:0486317/III/2> In the steam distillation of high boiling liquids, such as fatty acids and glycerine, in two or more serially arranged stages, in at least one of the stages a multiple of the quantity of liquid continuously introduced into the still per unit period is circulated therein and forced up above the surface of the liquid, a portion of the upwardly forced liquid being diverted to the next distillation stage.  In a suitable still in which the second distillation stage is effected in an upper annular chamber i, the still is provided with a depending pipe f surrounding a circulation open-ended tube d, which extends into the vapour space of the still, a part of the liquid forced up the tube d by steam admitted at e being trapped by a funnel k and supplied to the chamber i.  Each of the stages is both directly and indirectly heated, by perforated pipes g, p and coils c, o respectively. The liquid may be re-cycled to the main still via pipe l and valve s.  A number of similar two-stage stills 2, 3, 4 and 11, Fig. 3, may be used in succession in a plant, the stills being connected by feed pipes 8, 9 and 10.  Only one of these stills may be of the described type, the others being single-stage stills; the final apparatus 11 may be a condenser in which case the circulation tube is provided with a stirring member 13 and the heating coils replaced by a cooling coil 12.  Each of the vessels are connected to a vacuum condenser by pipes 15.  In a modification of the invention the two stages of the still are coterminous the liquid of the second stage falling on the surface of the liquid in the first stage a trap being used as before where the liquids meet. Each of the double-stage stills may be connected to a condenser, particularly where fractional distillation is required, as in the separation of the fatty acids in animal and vegetable oils and fats.
Patent GB-1005661-A (GB)
Title: Improvements in or relating to variable output hydraulic pumps
IPC: F04B49/16
Filed: 1960-09-28
Abstract: 1,005,661. Hydraulic pumps. L. BAINES. Sept. 19, 1961 [Sept. 28, 1960], No. 33369/60. Heading F1A. The output of a hydraulic pump with inlet and outlet valves 15, 18 is controlled by a control plunger 60 axially movable to vary the stroke of a spring-loaded free piston 58, Fig. 1, in an auxiliary cylinder 52 connected to the main cylinder 13, the pressure in space 52 acting on piston 60 being balanced by a passage 62 transmitting the pressure to the rear face of the piston. The control plunger is adjusted by a rotatable member 65 engaging a recess in the piston. In a multicylinder pump the members 65 are mounted on a common shaft for simultaneous adjustment.
Patent GB-1260472-A (GB)
Title: Improvements in or relating to the bending of glass sheets
IPC: C03B23/031
Filed: 1968-07-12
Abstract: 1,260,472. Bending glass sheets. TRIPLEX SAFETY GLASS CO. Ltd., T. CARTLEDGE, and J. PICKARD. 30 June, 1969 [12 July, 1968], No. 33394/68. Heading C1M. A heated glass sheet 1 is bent between two complementary dies, one (5) of the frame type and another (4) which is solid and which contains one or more controllable electrical heating element(s) 6 which are employed to control the temperature of the solid bending die and hence the rate of heat transfer from the glass sheet to the die. It is intended that the rate of heat transfer should be adjusted so that heat losses from the two sides of the sheet are equalized to eliminate spring-back in the bent sheet. Temperature sensing elements 7 are provided and are used to control the heaters, e.g. by means of variable transformers. The die 4 may be of cast refractory ceramic or metal or metal sheet and the die 5 of metal. The die 4 may be additionally covered with woven glass fibre cloth or by a boron nitride coating. The dies may give double curvature to the glass sheet.
Patent GB-426889-A (GB)
Title: Improvements in or relating to roadways and blocks for making the same
IPC: E01C5/14
Filed: 1933-11-29
Abstract: 426,889. Paving; blocks. RANDS, F. C., and ALEXANDER, T. F. N., Windsor House, Kingsway, London. Nov. 29, 1933, No. 33456. [Classes 20 (iv), 87 (i), and 107] A road comprises wood or other blocks 1, 2 of two different heights, and each of the blocks of either height is provided with one or more hollows for the reception of a filling which comprises grit and binding medium and presents a roughened surface standing proud of the surface of the block, as shown in Fig. 1. The fillings may be arranged as shown in Figs. 3 and 7, or they may extend transversely, longitudinally or diagonally of the block. The Provisional Specification describes also (1) the application of the fillings to the blocks of both heights, and (2) a construction of road wherein the blocks are of uniform height and some or all of the blocks are provided with fillings of gritty nature.
Patent GB-1178390-A (GB)
Title: Screens.
Inventor: HUGHES PETER LEWIS
IPC: B07B1/52
Filed: 1966-07-26
Abstract: 1,178,390. Cleaning screens. COAL INDUSTRY (PATENTS) Ltd. 21 July, 1967 [26 July, 1966], No. 33507/66. Heading B2H. A vibratory screen 1 is cleaned by means of a wiper blade 12 mounted for movement along an endless guide way 7 and movable across and in contact with the upper surface of the screen in the direction of travel of the material passing along the screen. Two or more wiper blades 12 spaced around the guideway 7 are interconnected by a rope 10 carried on pulleys 9 at each end of the guide way. The latter consists of a pair of parallel guide rails 7 each having upper and lower rails 7a, 7b interconnected by a semi-circular rail part 8. Each wiper blade 12 consists of a blade proper 16 formed of a flat flexible polyurethane strip secured to a holder 15 mounted on a bracket 13 carrying pairs of rollers 14a, 14b adapted to run above and below the rails respectively. In operation, as the material remaining on the upper surface of the screen is carried along by the vibration of the screen, it bears against the blades 16 in contact with the screen and urges them along the guide rails 7b in the direction of its movement along the screen. As each blade reaches the output end of the screen it is carried by the rope 10 upwardly and along the upper guide rails 7a in an inverted position to be returned to the input end of the screen. Alternatively, the blades may be positively driven, e.g. by an electric motor driving one of the pulleys; they may be supported independently of the screen frame; they may have slotted holes for attachment to the blade holder so that the blades can be adjusted relative to the blade holder to compensate for wear of the blades.
Patent GB-664144-A (GB)
Title: Improvements in or relating to animal traps
IPC: A01M23/30
Filed: 1948-12-31
Abstract: 664,144. Animal traps. ALSA (PROPRIETARY), Ltd. Dec. 31, 1948 [Feb. 6, 1948], No. 33616/48. Class 5(i) The bait-carrying lever 26, on being disturbed, knocks the spring-held animal striker 23 over the dead-centre position. The striker is carried by a U-shaped member pivoted slightly higher than the bar 21 to which the springs 24 are attached. The springs may be arranged either in tension or compression. The housing consists of two parts 10, 11 welded to cross-bars or plates 13, 14. A slot 12 permits movement of an extension 27 of the striker arm until it rests in the set position against an adjustable stop 18. The extension 17 of the striker arm is moved aside into a notch 17 to permit passage of the lever 26. A cutaway portion 16 allows the victim to get at the bait held between the ends 28, 29, of the lever 26. An opening in the floor allows the platform 28 to be lowered therethrough to receive bait.
Patent GB-611067-A (GB)
Title: Improved process for the purification of coal gas
IPC: C10K1/20
Filed: 1945-12-13
Abstract: 611,067. Gas-purifying materials. MACINTOSH AUTO-CONTROL GASIFICATION CO. PROPRIETARY, Ltd. Dec. 13, 1945, No. 33786. Convention date, Jan. 8. [Class 55(ii)] Purifying mass for the removal of hydrogen sulphide from coal gas comprises comminuted spent wattle-bark containing tannin material, either alone or in combination with iron oxide. In an example, a mixture of 1 part by weight spent'wattlebark with 20 parts by weight of bog ore iron oxide is used. Specification 154,961, [Class 55(ii)], is referred to.
Patent GB-889104-A (GB)
Title: Tooth brush
IPC: A46B9/04
Filed: 1960-10-03
Abstract: 889,104. Toothbrushes. GAMBINO, J. C. Oct. 3, 1960, No. 33924/60. Class 19. A toothbrush has at least one row of bristles bent towards the axis of the back 11 of the brush, the bends being in the upstanding portions of the bristles. As shown in Fig. 1, the back 11 carries three rows of bristles the outer two of which are set inwardly at an angle of at least 30 degrees. Various arrangements of bristles are shown including those in Figs. 3a, 3f. The handle may be at an angle to the plane of the back of the brush. The bristles may be of nylon, or "Orlon" (Registered Trade Mark), or natural bristles.
Patent GB-362126-A (GB)
Title: Improvements in bonnet fasteners for use on motor vehicles
IPC: E05B65/19
Filed: 1930-11-12
Abstract: 362,126. Hook fastenings. RUSSELL, E. G., Wednesbury Road Works, Walsall. Nov. 12, 1930, No. 33999. [Class 44.] In a fastening for motor-car bonnets of the type comprising a slidable hook 9 carried by the bonnet 3 and adapted to engage a yoke 10, fixed to the chassis, under the action of a compression spring 14, the hook is mounted in a tubular body 1, with integral flanges 2 for attachment to the bonnet, and with a separately formed guide member 16 for the lower end of the hook stem secured therein, the guide having a guide slot engaged by a pin 18 on the hook stem. The body 1 and flanges 2 may be pressed up from a single blank with edges meeting at 7. As shown, the guide member 16 is of tubular form pressed up from sheet metal with an open joint at 17 forming the guide slot for pin 18. A tongue at the lower end of the guide, bent down and secured to the front wall of the body 1 by a rivet 24, has a keyhole aperture the circular part 21 of which guides the stem 11 of hook and the narrow part 22 allows passage of pin 18 in assembling. The stem 11 carries an operating knob 12 with depending sleeve 13 guided in member 1 and enclosing the upper end of the spring 14, the lower end of which bears on a washer 15 abutting against the upper end of guide 16. Upward movement of the hook is limited by projections 26 on the stem which contact with the sides of aperture 21, and slot 17 has a lateral extension 19 into which pin 18 may be turned to retain the hook in the depressed release position. According to the Provisional Specification the separate guide member is in the form of a bridge-piece with its end portions secured to the front wall of the tubular body 1.
Patent GB-337975-A (GB)
Title: Improvements in steel hatch covers for ships
IPC: B63B19/18
Filed: 1929-11-08
Abstract: 337,975. MacGregor, R.. Nov. 8, 1929. Hatches.-A hatch cover comprises plates 1, 2 provided with rollers 7 which travel along the hatch coaming and rollers 5 carried by legs 4 which may be integral with the cover framing and which travel along rail 6 secured to the deck. In a modification, the hatch coaming is stepped and the inner sections 9, 10, Fig. 4, of the hatches may be run back over the outer sections 1, 2 to open the centre of the hatchway.