baber/WOPTO huggingface dataset:
Patent GB-172856-A (GB)
Title: Improvements in and relating to kilns
IPC: F27B1/00
Filed: 1920-11-25
Abstract: 172,856. Nelson, J. Nov. 25, 1920. Shaft kilns. - In a gas-fired shaft kiln for the manufacture of Portland cement of the kind in which powdered materials are showered down through the kiln, the feeding- means comprises a stack or shoot 24 having at its lower end a sieve or screen 34 above which works a rotary v blade 39 mounted on the shaft of a vertically adjustable electric motor 38<1>. The material is fed to the stack 24 by a bucket elevator 20, and is spread by a cone 35 on to the sieve. The motor is mounted within the cone, and the latter is secured in position in the, stack by radial arms 36 vertically adjustable in slots 37. The stack is mounted on the shaft by radial arms between which are waste gas outlet openings controlled by pivoted arcuate dampers 28. The kiln is heated by one or more ring burners 11, 12.
Patent GB-675018-A (GB)
Title: Improvements relating to load responsive brake control mechanisms for railway and other vehicles
IPC: B60T8/18
Filed: 1949-12-30
Abstract: 675,018. Regulating vehicle brakes. WESTINGHOUSE BRAKE & SIGNAL CO., LTD., and BRACKENBURY, A. G. Nov. 20, 1950 [Dec. 30, 1949]. No. 33323/49. Class 103 (i). In load responsive control mechanism for railway and other vehicle brakes, a spring- loaded toggle device is provided whereby the change from load to empty braking conditions is arranged to be effected at a stress, transmitted from the vehicle springs, substantially less than that at which the change from empty, to load conditions takes place. In Fig. 2, the mechanism is shown in the vehicle " empty " condition. When the' vehicle is loaded, the rods 8, 15 coupled to the springs on the different axles are moved inwardly or towards one another compressing the balance springs 19 and also compensating springs 16, 17 so that sleeves 13 and 14 slidable on the rods 8 and 15 and linked to a double-armed lever 12 secured to a shaft 11, are moved so as to rotate the shaft 11 anti-clockwise. The shaft 11 is connected to means, not shown, for effecting a change in the brake loading, for example by alteration of the leverage ratio. Also mounted on shaft 11 is a toggle member 10 having a slot 21 at one corner within which is secured pin 22 at the end of a toggle rod 23. The member 10 also has mounted in it a roller 24 engaging the hooked end of a spring-loaded pivoted rod 26 so that, together with the shaft 11, it is prevented from free movement until it has been rotated towards its load position a small predetermined amount sufficient to cause a cam 28 mounted on the casing to lift, by engagement with roller 29, the hooked end of rod 26. Thereafter, under the action of springs 16, 17 and the toggle rod 23, the member 10 and shaft 11 are rotated to the vehicle " loaded " position, shown in Fig. 4. Due to the action of the slot 21, the pin 22 passes by different paths A and B in changing between the two positions, thus resulting in different degrees of compression of the spring on the toggle rod which provide the required differential between the loading conditions. Fig. 5 is an enlarged view showing how the cam 28 continues to engage the roller 29 after the hooked head 25 has been disengaged from the roller 24 and positions the arm 26 ready for re-engagement when the mechanism is returned to the empty position.
Patent GB-521362-A (GB)
Title: Process and apparatus for the concentration of sulphuric acid
IPC: C01B17/88
Filed: 1938-11-16
Abstract: 521,362. Distilling sulphuric acid. PAULING, H. Nov. 16, 1938, No. 33359. [Class 32] Sulphuric acid is concentrated in a vertical tube, heated at its lower end the upper part b having mushroom baffles c while the lower part a has a smaller coaxial tube e with inclined slots f sloping upwards towards the centre, the annular space between the tubes being provided with filling material g. The weak acid fed in by a pipe i is partly concentrated by the vapours ascending in the upper part of the tube and is then subjected to film evaporation in the lower part heated by a furnace k. Concentrated acid issues from the pipe h. The acid is preferably fed in for a few seconds every minute, whereby a so-called "liquid plunger" effect is produced, and the filling is thoroughly rinsed periodically. A number of distilling tubes may be arranged around a single heating furnace.
Patent GB-351880-A (GB)
Title: Improvements in handles for pots, pans, and other similar articles
IPC: A47J45/06
Filed: 1930-11-06
Abstract: 351,880. Pan &c. handles. BANKS & DAVIS, Ltd. and DAVIS, H., River Street, Deritend, Birmingham. Nov. 6, 1930, No. 33411. [Class 66.] A tubular handle formed from upper and lower parts 1, 2 is fitted to a pan or other article by means of an attachment plate 3 the upper edge of which is formed with a lip 4 which enters the handle and is spotwelded or otherwise attached at 5 to the upper part thereof. The lower part 2 of the handle is formed with a downwardly curved lip 6 the flanged edge of which is welded'or riveted to the plate at 7. A hole 13 is formed in the attachment plate to permit draining during the turning operation. Specifications 165,375 and 273,183, [both in Class 66, Hollow-ware], are referred to.
Patent GB-819030-A (GB)
Title: Process for concentrating urea solutions
IPC: C07C273/16
Filed: 1957-10-25
Abstract: A process for concentrating an aqueous solution of urea comprises bringing the solution into a chamber under a reduced pressure of less than 100 mm. of mercury, under such temperature conditions that the solution of urea is caused to separate into solid urea and water vapour, and the greater part of the water is removed from the chamber by carrying off such water while it is in the vapour state.  The temperature is controlled so that the solid urea is melted and continuously discharged at a temperature of not more than 145 DEG  C. and preferably between 132 DEG  and 137 DEG  C. The water vapour is carried off in countercurrent by a gas such as air, nitrogen, carbon dioxide or ammonia.  In a typical example 600 kgs. per hour of 94.5 weight per cent of urea solution at a temperature of 122 DEG  C. was admitted into a tubular steam jacketed evaporator of 2 mm. length and 30 cm. internal diameter at a pressure of 55 mm. of mercury.  Water vapour was carried off at about 30 kgs. per hour and the melt was continously discharged at 136 DEG  C. having a moisture content of 0.45 weight per cent and a biuret content of 0.7 per cent.
Patent GB-911943-A (GB)
Title: Grinding machine truing mechanism
IPC: B24B53/06
Filed: 1961-09-19
Abstract: 911,943. Grinding-machines; trueing grinding wheels. CINCINNATI MILLING MACHINE CO. Sept. 19, 1961 [Oct. 20, 1960], No. 33480/61. Class 60. A centreless grinding-machine for finishing the groove of the inner races of ball-bearings has a profiled grinding-wheel in the form of two intersecting arcs which are trued by a swingable tool, and actuating means to effect shifting of the wheel relative to the tool whereby the sides of the wheel periphery are placed successively in the path of the tool. The work 18 is magnetically held against a rotary face-plate and is located by shoes 16, 17, Fig. 1, the wheel-head 11 being pivotally mounted about a horizontal axis so that it may be rocked into grinding engagement with the work. The profile, corresponding to the ball-race groove 105, Fig. 6, comprises circular arcs struck from centres E, F, and intersecting to form a peripheral ridge 108 in the central plane CD of the wheel. To dress the convex faces 106, 107, the tool 55 is swung through 180 degrees of arc from 55a to 55b, Fig. 6. The dressing tool is mounted in a yoke 40 which is pivoted about an axis B, Fig. 3, to swing the point 56 of the tool at a radius R by means of a pair of oppositely moving pistons of a reversible hydraulic motor 60 interconnected by a chain which is taken round a sprocket 69 fixed to the upper pivot pin 43 of the yoke 40, which is itself mounted in an adjustable supporting bracket 29 capable of a small amount of angular adjustment about a parallel axis A; adjusting screws 35, 36 provide for lateral positioning of the bracket 29 relative to a slide member 26 which allows radial -adjustment of the trueing mechanism to be effected by a screw 70<SP>1</SP>. The axial movement of the grinding wheel spindle 80, Fig. 2, is effected by an electricallycontrolled hydraulic motor, the piston of which, 93, engages the ball-end 89 of a rocking member 88 having a diametrical opposed ball-end 90 engaged in a recess 91 in the spindle bearing housing. Trunnions 87 on a sleeve 86, internally grooved to engage a collar 83 on the spindle, connect the sleeve 86 with the rocking member 88. The travel of the piston 93 is limited by adjustable stops 96, 97, the latter incorporating a setting gauge 98. By adjusting the stroke of the piston 93 different arcuate forms may be generated. A feed mechanism 72, Fig. 1, may automatically rotate the screw 70<SP>1</SP> a predetermined amount to advance the dressing point 56 an increment at each trueing cycle. A finger 77, Fig. 3, on the lower pivot pin 44 contacts limit switches LS2, LS3, arranged side-by-side, to control the swing of the yoke 40; LS1 is operated to stop the traverse by a pivoted finger 73 at the precise intermediate position of the yoke and tool and automatic means is provided to move the central plane of the grinding-wheel by the required amount before the stroke is resumed.
Patent GB-926721-A (GB)
Title: Improvements in or relating to electric switching devices
IPC: H01H9/02
Filed: 1961-09-19
Abstract: 926,721. Snap-action switches; retractive switches. ERNST LEITZ G.m.b.H. Sept. 19, 1961 [Sept. 23, 1960], No. 33509/61. Class 38 (5). [Also in Groups XIX and XX] An electric switching device for controlling changing of transparencies in an optical projector simultaneously operates a counter indicating the position of the magazine. Movement of projection 11, Fig. 1, to the right causes extension 9a of disc 8 to close contacts 4 to change the transparency and advance the magazine. Simultaneously, stud 13 carries along pawls 14, 15 the latter being effective because of its engagement with cam surface 17 to advance numeral wheel 19. The number of the transparency is seen through a cylindrical lens 21. The numeral wheel can be set to a predetermined number by manual operation through an opening 26. Springs 25 return disc 8 and contacts 4 to their initial position on release of projection 11. For reverse movement, projection 11 is turned to the left. This time a switch 5 is closed and a member 27 is turned by a pin and slot 28, 28a counterclockwise to hold contacts 5a closed whereby a solenoid maintains the apparatus in reversing position, each operation of contact set 5 effecting a stepping movement. Both the numeral wheel and the member 27 are held against accidental movement by spring- pressed balls 23, 31. Contacts 5a remain operated until the projection 11 is moved into its extreme right-hand position. The numerals may be self-luminous.
Patent GB-929533-A (GB)
Title: Lignin-reinforced synthetic rubber
IPC: B60C1/00
Filed: 1961-09-19
Abstract: A vulcanizate is prepared by subjecting a composition comprising a rubbery butadiene polymer coprecipitated with lignin to vulcanization in the presence of an organic accelerator, an activator, sulphur in amount not greater than 2,5 parts per 100 rubber, and a modifier selected from the group consisting of the oxides of copper, lead and bismuth.  Specified are polymers of butadiene, methyl-2-butadiene, 1,3-pentadiene, and 2,3-dimethyl butadiene as well as copolymers with styrene, vinyl naphthalene, alpha-methyl styrene, acrylonitrile and methacrylonitrile.  The usual vulcanization additives may also be present, e.g. a petroleum hydrocarbon softener, an asphaltic hydrocarbon softener, stearic acid, carbon black, pine tar and waxy hydrocarbons.
Patent GB-443928-A (GB)
Title: Improvements in the manufacture and production of acetaldehyde from acetylene
Filed: 1934-11-22
Abstract: Acetylene or a mixture containing acetylene is converted in part into acetaldehyde by passage through an acid solution containing mercury, and the residual acetylene, if desired after separation of the acetaldehyde formed, is then converted into acetaldehyde by catalytic reaction with steam.  When concentrated acetylene is used, it may be recirculated through the acid solution before the residual gas is passed to the second stage. In an example, dilute acetylene is led at 90--95 DEG  C. through a tower packed with rings and containing a solution of ferric sulphate in dilute sulphuric acid, metallic mercury being distributed over the rings; the wet gases leaving the lower are mixed with a small proportion of oxygen or air and passed at 90--120 DEG  C. through a second tower containing active carbon which has been impregnated with phosphoric acid solution and mixed with mercury; the oxygen or air added to the gases oxidizes the mercury, which then reacts with the phosphoric acid; the mercury phosphate so formed promotes the conversion of the acetylene into acetaldehyde.  The second stage of the process may also be effected with the catalysts described in Specifications 227,147, 329,867, 332,635, [all in Class 2 (iii)], or 364,255.
Patent GB-1031321-A (GB)
Title: Model tree
Inventor: SELWYN-SMITH ROY
IPC: A41G1/00
Filed: 1961-09-21
Abstract: 1,031,321. Artificial flowers &c. BRITAINS Ltd. Sept. 20, 1962 [Sept. 21, 1961], No. 33816/61. Heading A4X. An artificial model tree has a one piece trunk 1 and branches 2 moulded in high density polyethylene and a base 3 and foliage units 4 with blind holes to receive a pin 6 on the trunk and pegs 5 on the branches respectively. In a modification the trunk has pegs to engage holes in branch units.
Patent GB-765789-A (GB)
Title: Improvements relating to mounting means for a windscreen wiper motor
Inventor: ROW WALTER JOHN
IPC: B60S1/04
Filed: 1953-12-08
Abstract: 765,789. Windscreen cleaners. TRICO-FOLBERTH, Ltd. Dec. 8, 1954 [Dec. 8, 1953],. No. 34167/53. Class 138(1) A device for mounting a number of windscreen wiper motors 11, 12, Fig. 1, in a motor vehicle in precise relationship to each other comprises a connecting strap 1, formed holes 2, Fig. 2, spaced apart at the required distance of the motors, a spacer piece 5 fixed to the strap around each hole and a bush 7 for receiving a motor shaft 10 inserted through each spacer piece. The connecting strap 1, Fig. 2, is provided, burst-up tongues 3, and each spacer piece 5, Fig. 3, is supported around each hole 2 by the tongues engaging surfaces 4 on the piece 5 and a flange 6 of the piece contacts one surface of the strap 1. Each bush 7, Fig. 4, has a flange 8 to abut the other surface of the strap 1 and a key 9 which engages in one of the slots formed in the strap by the burst-up tongues 3, the key thus preventing rotation of the bush. The motors are secured to the strap by screws 13 passing through the strap and spacers 14 into lugs 15 on the motor casings. The complete unit comprised of the strap and motor is secured to the vehicle scuttle by passing the the bushes 7 through holes therein, the faces 17 of the spacers 5 conforming to the interior surface of the scuttle, whereafter further spacers (not shown) having suitably shaped faces are passed over the bushes to engage the outside of the scuttle. The bushes are threaded at 18 to receive nuts. for securing the complete assembly. In the embodiment shown in the Figures the motor 11 controls the motor 12, the motors being interconnected by linkage 16. The motors may, however, be electrically operated.
Patent GB-1070279-A (GB)
Title: Graft polymers and blends containing the same
IPC: C08L51/06
Filed: 1964-08-20
Abstract: Graft polymers are made by polymerizing in suspension a mixture of 95-25% by weight of a vinyl halide or a monomer mixture containing at least 70% by weight of vinyl halide and 5-75% by weight of a polyolefin,at least part of which is present in finely-divided form. Monomers specified are vinyl chloride and, as comonomers, vinylidene chloride, vinyl esters, acrylonitrile, acrylates, methacrylates, maleates and fumarates.  Polyolefins specified are polyethylene, polypropylene, polyisobutylene and polyoctene.  The products mouldable materials are made by blending the graft polymers with polyolefin-incompatible addition polymers, e.g. polyvinyl and polyvinylidene chlorides, vinyl chloride-vinyl acetate copolymers, polymethyl methacrylate, styrene-acrylonitrile copolymers and butadiene-styrene copolymers.
Patent GB-1024466-A (GB)
Title: Apparatus for the treatment of used etching emulsions
IPC: C23F1/08
Filed: 1963-08-29
Abstract: 1,024,466. Gravity-separation of liquids ; sheet filters. W. MOLL. Aug. 29, 1963 [Sept. 6, 1962], No. 34254/63. Heading BID. Etching emulsion is discharged from an inflow tank (beneath a neutralizing tank 4, Fig. 2), by a pump 10 to a stabilizing tank 2, whence it flows by gravity through a pipe 13, Fig. 3, to an oil-separating tank 3, being introduced below a baffle 16. Compressed air to assist separation may be introduced at 27. Oil collects in regions 21, 22, and flows via pipes 23, 24, 25 to a can 26. The main body of liquid flows, at 35, to neutralizing tank 4, Fig. 2, where it is stirred (37) with neutralizing agent (e.g. caustic soda solution) introduced at 41. Flow of neutralizer to, and hence the pH in, tank 4 are governed by a probe 40 and control 44. The liquid from tank 4 overflows at 46, 47 into one of a number of filter bags 50, Fig. 2, filtrate being discharged to a sewer at 52. Two groups of interconnected bags are depicted in Fig. 6 (not shown). An alternative filter device (Fig. 5, not shown) consists of an endless band of screen material which has upon it a portion of filter paper issuing from a supply roll, the band being moved, whenever the pool formed above the paper deepens on clogging, to draw a clean portion of paper from the supply roll.
Patent GB-821837-A (GB)
Title: Improvements in or relating to butt welding the edges of gapped metal tubes
IPC: B23K13/02
Filed: 1955-11-30
Abstract: 821,837. Welding by pressure. SOC. METALLURGIQUE TECHNIQUE ET COMMERCIALE. Nov. 30, 1955 [Nov. 30, 1954], No. 34296/55. Class 83 (4). In butt-welding the opposed longitudinal edges of a gapped metal tube in which concentrated longitudinal electric currents are induced along the edges, the paths of the induced currents are extended beyond the end of the tube and the opposed edges are pressed together when the material thereof is plastic. In an embodiment, fingers 6, 7, Fig. 3, of tungsten are pressed against the tube on opposite sides of the gap to provide an extended path for the induced currents J1, J2. Steel fingers may be welded to the tube and cut away after the tube seam is welded. The fingers 6, 7 may be carried in slots in a mandrel 8, Fig. 4, to be pressed against the end of the tube 1 butting against a ledge 10 on the mandrel with slots 6a, 7a provided in the contact faces to provide bearing-surfaces 6b, 7b. The fingers 6, 7 may be spring-urged into contact with the tube end. Alternatively fingers pivoted on the pistons of hydraulic rams may engage the tube or a single contact 50, Fig. 16, pivoted to a piston 51 of an hydraulic ram may be pressed against the tube to engage the tube on each side of the gap. A gapped tube 1, Fig. 7, is supported on a pair of mandrels 8, mounted on a fixed pedestal 21 and a pedestal 22 adjustable to allow insertion of the tube by pinions 28 engaging racks 27. An inductor 4 is carried on a wheeled carriage 23 driven in the direction of the arrow along rails 29 by a motor 26 driving pinions 25 engaging the racks 27. Rollers 14 on the carriage guide the tube while rollers 15 exert the welding pressure. In a further machine the inductor and rollers 14, 15 are mounted on a fixed support and the tube is held between mandrels mounted on pedestals which are movable by racks and pinions to move the tube past the stationary inductor. In a modification contact fingers 43, 45, Fig. 15, and 44, 46 at opposite ends of a tube are connected by cables 47 and 48 which provide the return path for the induced current. The contact faces of the contact fingers may be rounded, e.g. part spherically to fit corresponding depressions in the tube end and the operating frequency for the inductor may be 1000-10,000 cycles per second. The thickness of the contact fingers should be at least equal to that of the edges to be welded. Specification 666,381 is referred to.
Patent GB-364253-A (GB)
Title: Improvements in or relating to brakes for motor vehicles or the like
IPC: F16D65/08
Filed: 1930-11-14
Abstract: 364,253. Brakes. ANTELME, L. X., 80, Rue DamrÞmont, Paris, and TRESCARTES, L., 88 bis, Route de Montesson, Le Vesinet, Seine-et-Oise, both in France. Nov. 14, 1930, No. 34325. Convention, date, Nov. 15, 1929. [Class 103 (i).] A brake for motor and like vehicles comprises two or more elastic segments 2,. 2a each constituted by one or more undulated springs 11 embedded in a body 12 of rubber or like material carrying a friction lining 13, each segment being held at one extremity by a rigidly secured jaw 3, 3a. The segments are expanded into contact with the drum 1 by a cam 8 acting on two wedge-shaped members 10, 10a and the segments are returned automatically by their own resiliency to their normal position on release of the brake. The rubber body 12 may be contained between two spring blades. The segments may be mounted with their jaws adjacent each.other and may be mounted in pairs side by side.
Patent GB-742637-A (GB)
Title: Non-reversing tapping attachment
IPC: B23G1/46
Filed: 1953-12-10
Abstract: 742,637. Screw - cutting attachments: PIERCY, K. V. March 24, 1954 [Dec. 10, 1953], No. 34343/53. Class 83 (3). A screwing or tapping attachment comprises a non-rotatable part J to be mounted on a machine, an axially-movable tool shaft A, means B, B<SP>3</SP> for coupling the part J and shaft together during screwing, an inner rotatable member C around the shaft, an outer member G concentric with and connected by speed-increasing gearing E<SP>1</SP>, E<SP>2</SP>, to the inner member, means K on the outer member engageable with the rotating work or holder to rotate member C faster than the work, and means B<SP>1</SP> on the shaft A, engageable with means B<SP>2</SP> on the inner member when screwing is complete, to cause rotation of the tool in the same direction but at a higher speed, thus withdrawing the tool.
Patent GB-1274488-A (GB)
Title: Flow control for gas analyzing apparatus
Inventor: LLEWELLYN PETER MERLYN
IPC: H01J49/04
Filed: 1969-07-08
Abstract: 1,274,488. Gas chromatography detection system. VARIAN ASSOCIATES. 8 July, 1969 [10 July, 1968], No. 34345/69. Heading B1X. Separated effluent from gas chromatography column 18 passes through flow splitter 22 and then by line 24 to membrane separator 14, which acts as the input of mass spectrometer 12, the bulk of the stream passing on to exhaust through throttle valve 38. By adjusting throttle valve 38, the relative proportions of the stream passing to spectrometer 12 and flame detector 30 respectively may be varied. In one mode of operation, the throttle valve 38 is adjusted to control the amount of flow passing to separator 14, while in another mode valve 38 is adjusted to increase flow in line 24 when a peak to be investigated is registered by recorder 34. The operation may be made automatic using the means indicated.