baber/WOPTO huggingface dataset:
Patent GB-333264-A (GB)
Title: Improvements in method and apparatus for denitrating mixtures of nitric acid and sulphuric acid and concentrating nitric acid
IPC: C01B17/94
Filed: 1929-02-05
Abstract: 333,264. Hercules Powder Co., (Assignees of Bonnett, J. L.). Oct. 26, 1928, [Convention date]. Nitric acid.-Nitric acid is concentrated by passing a mixture of aqueous nitric acid and a dehydrator, e.g. sulphuric acid, phosphoric acid or anhydrous sodium sulphate, in counterflow with a mixture of steam and nitric acid vapour to effect partial denitration of the former mixture, heating the partially denitrated mixture to generate steam and nitric acid vapour and using a portion of the generated steam to denitrate further quantities of the acid mixture, and effecting the separation of nitric acid from the balance of the steam generated, the quantity of steam passing into the tower in which the counterflow takes place being limited to an extent necessary for avoiding excessive dilution of the concentrated nitric acid. The acid mixture is passed from a vessel a down a packed tower c to a boiler g, heated by a steam jacket h and coils l, and divided by partitions k into compartment j, j<1>, and j<11>. Steam containing nitric acid vapour from the first compartment j passes up the column c, from the top of which concentrated nitric acid vapours pass to a condenser w. Steam, containing small quantities of nitric acid vapour, passes from the compartments j<1> and j<11> through pipes o, p upwards through a packed column n and reflux condenser s. Dilute nitric acid condensed in column n passes by a trapped pipe 2 into the first compartment j of the boiler. The apparatus may be used for denitrating acid mixtures by passing the latter down the column c.
Patent GB-581378-A (GB)
Title: Improvements connected with spreaders for lime, fertilizers, powders, sand, granite chippings or the like
IPC: A01C17/00
Filed: 1944-03-03
Abstract: 581,378. Manure &c. distributers. ROBBINS, H. G. March 3, 1944, No. 3966. [Class 6 (i)] A spreader for lime, fertilizers, powder, sand, and the like comprises a trailer 4 fitted with a hopper 3, outlet apertures in the base of the hopper, a rotary disc 13 horizontally disposed beneath the hopper floor on to which the material to be distributed is directed, a rotary member 16 mounted on the spindle of the disc 13 and adapted to feed the material to the disc, and a drive from the trailer axle for operating the disc and the feed member. In the construction shown the disc 13 is mounted on a spindle 9 which has a chain wheel 10 driven by a chain 11 the latter being driven by a chain wheel geared to the driving axle 5 of the machine. Material from the hopper 3 is fed to the disc through three apertures 14 in its base 15, two being on a line running longitudinally of the machine and the third being located circumferentially between them. A truncated cone shaped member 16 on the spindle 9 feeds the material towards the apertures. The base 15 of the hopper may be adjusted about its centre and the apertures 14 may be adjustable in size. Specifications 172,882, [Class 6 (i)], and 493,016 are referred to.
Patent GB-873603-A (GB)
Title: Improvements in the production of alpha, beta-unsaturated carboxylic acid amides, acids and esters
IPC: C07C51/06
Filed: 1958-02-07
Abstract: a :b -Unsaturated carboxylic acid amides are prepared by heating a ketone cyanhydrin in the presence of strong sulphuric acid, oleum or an alkyl sulphuric acid as the reaction medium, there being added to the reaction mixture an alkali metal salt of a sulphuric or phosphoric acid in an amount of at least 0.25% by weight calculated on the weight of the reaction medium, the reaction being carried out at from 70 DEG  to 140 DEG C. within a period of up to 20 minutes. In a modification, the alkali metal salt is added to the reaction medium prior to the mixing with the cyanhydrin.  Alternatively, in either method, instead of the specified alkali metal salt there may be added an amount of a suitable alkali metal compound which is capable of forming with sulphuric acid at least 0.25% by weight, calculated on the weight of the reaction medium, of an alkali metal salt.  The cyanohydrin reactants may be those derived from ketones of the formula R.CO.CHR1R2 wherein R represents an organic radical and R1 and R2 represent organic radicals, hydrogen or halogen, the organic radicals being for example alkyl or aralkyl radicals; cyclic ketones, e.g. cyclohexanone are also mentioned. The alkali metal salts of sulphuric and phosphoric acids, for example, the neutral or acid salts of ortho, meta-, pyro- and polyphosphoric acids, sulphuric acid and pyro sulphuric acid, are preferably used in amounts of 0.5 to 10% by weight on sulphuric acid reaction medium.  The process is preferably effected continuously.  The carboxylic acid amides formed may be saponified to the corresponding acids or converted to the corresponding acid esters by the addition of water or an alcohol respectively to the reacted mixture.  Examples describe the preparation of methacrylamide and a -methyl crotonamide.
Patent GB-978701-A (GB)
Title: Game-playing apparatus
Inventor: GUSTAVUS MARTIN ROBERT RICHARD
IPC: A63F5/04
Filed: 1962-02-02
Abstract: 978,701. Chance apparatus. M.R.G. GAMES Ltd. Feb. 1, 1963 [Feb. 2, 1962], No. 4063/62. Heading A6H. Chance apparatus of the roulette type comprises a bowl having an upstanding rim portion 4 and a sloping surface 5 terminating in a ring of pockets 11, together with a spurning device 7 mounted for rotation at the centre of the bowl and marked with a series 8 of values around its rim, the rim lying adjacent the ring of pockets 11. In use a ball is set in motion around the outer region of the bowl and the device 7 spun, the ball eventually entering one of the pockets 11, the value of the latter being denoted by the device 7 when it comes to rest. Levelling screws 13 are provided under the bowl.
Patent GB-1097694-A (GB)
Title: Improvements in or relating to rotary pumps for liquid
IPC: F04C2/36
Filed: 1965-01-29
Abstract: 1,097,694. Rotary pumps. O. BJORNDAL. Jan.29, 1965 [Jan. 31, 1964], No.4110/65. Heading F1F. A rotary pump for a liquid includes a circular plate 23 attached to a driving shaft 15 and having axially-orientated teeth or projections 24 on either side thereof meshing with similar projections 28 on pairs of axial-spaced circularplates 26, 27 that are fixed to rotatable shafts 20, 21, the latter being coupled to the shaft 15 by synchronizing gears 17, 18, 19. Pairs of inlets and outlets 37 for the liquid are situated in a two-part housing 10, 11 in alignment with the meshing projections so that the liquid is displaced by the other projections along intersecting circular-channels 25, 29, 30, 31, 32 that are defined by the housing. Lubrication of the gears 17, 18, 19 and roller bearings 13, 22 for the various shafts may be effected by the liquid that is being pumped, which liquid may be oil. Passages may be provided in the plates 26, 27 to give said liquid access to the axially-outermost sides thereof to prevent axial loading of the bearings 22.
Patent GB-832252-A (GB)
Title: Improvements in or relating to thermionic valves incorporating metal-ceramic seals
Inventor: COHEN EDWARD
IPC: C04B37/02
Filed: 1957-02-06
Abstract: 832,252. Discharge tubes. M-O. VALVE CO. Ltd. Feb. 6, 1958 [Feb. 6, 1957], No. 4176/57. Class 39(1). [Also in Group XXXVI] Ceramic and titanium or zirconium parts of a thermionic valve are joined by brazing the metal to the ceramic in a vacuum or inert atmosphere with a brazing metal of copper, silver, or gold, or their alloys. A metal other than titanium or zirconium, for example an alloy of iron, cobalt and nickel may be joined to a ceramic by first brazing a foil of titanium or zirconium to the ceramic using copper, silver or gold as the brazing metal, and then brazing the foil to the first metal. The two brazings may be carried out in a single operation, and a titanium or zirconium foil coated on one or both sides with the brazing metal may be used. Forsterite ceramics may be brazed to titanium by the method, and ceramics of alumina and mullite may be brazed to zirconium. The inert atmosphere may consist of argon, and the brazing metal may be placed as a foil between the two parts to be joined together, or it may be applied to the boundary of the joint in the form of a wire which when melted is drawn between the surfaces by capillarity. Alternatively the brazing metal may be applied to one or both parts to be joined together. In an example, the corundum window of a wave-guide is sealed into a rebate in a titanium ring which is slightly larger than the window by inserting between the two parts a ring of copper-silver entectic alloy in the form of foil and heating the assembly to 900‹C. The window is sealed across the end of a tube forming part of the valve by brazing or welding the titanium ring to the wall of the tube. In another example, a tube of alumina forming a part of a thermionic valve is sealed to a disc of iron-cobalt-nickel alloy by placing between the two parts a ring of titanium plated on both sides with a coppersilver entectic alloy and heating in vacuum to 900‹C. In a further example, titanium pins are sealed through holes in a ceramic disc forming the base of a thermionic valve by placing round each pin three turns of coppersilver entectic wire and heating the assembly to melt the wire and cause it to flow between the pins and disc. Specification 832,251 is referred to.
Patent GB-659626-A (GB)
Title: Improvements in aspirator heads
IPC: B63B27/25
Filed: 1949-02-16
Abstract: 659,626. Injectors. GRAYSON, H. M., and HARROLD, G. Feb. 16, 1949, No. 4185. [Class 71] An aspirator head for raising and/or conveyance of liquids and suspensions of solids therein comprises an open ended tube 1, Fig. 1, having at least one air inlet opening 3 behind which is a bank 4 closed at the top and bottom 9 and along a vertical side 5 to form a pocket from which the air leaves by an opening 7, Fig. 2, to set up a vortical flow along the tube for the purpose of enhancing the mixing and entrainment of the liquid suspension. The air inlet openings 3, of which four are shown, are controlled by a threaded muff 12 on a member 2 connected to a flexible hose leading to a suction pump. In a modification the openings 3 are controlled by a pouted sleeve adjusted by a pin and slot mechanism, and in a further modification the tube 1 is screw threaded above and below the openings 3 and carries a lock nut for securing the threaded muff in position.
Patent GB-271542-A (GB)
Title: Improved sock and stocking splash-guard attachment for shoes
IPC: A43B3/16
Filed: 1926-02-15
Abstract: 271,542. Ball, E. E. Feb. 15, 1926. No Patent granted (Sealing fee not paid). With attachments for special purposes.-A splash guard attachment for shoes to protect the stockings or socks, comprises a guard a Fig. 4, of celluloid or other suitable material, secured to the upper of a shoe by spring clips b. The lower edge of the guard extends nearly to the ground. In a modified form of clip Fig. 5, locking screws d are provided to prevent detachment of the clip b.
Patent GB-376798-A (GB)
Title: Improvements in and relating to water cocks and taps
IPC: F16K21/10
Filed: 1931-02-12
Abstract: 376,798. Stop valves ; fluid-actuated valves. WARDLAW, SIR H., 34, Dandenong Road, Caulfield, Melbourne, Australia. Feb. 12, 1931, No. 4383. [Class 135.] A water tap or cock of the kind having a slow-closing action comprises an operating spindle such as J, J2, Fig. 1, a lift beat valve member, as F, separate from but pushed open .positively by the spindle against the action of a spring E, said spindle being fitted with a piston J<1> disposed in a cylinder R so as to allow water to leak beyond the piston in opening to provide a cushion to check the return movement of the valve. The arrangement may be applied to a manually-operated valve e.g. lever-operated or screw-spindle type, or a press-top type, as shown in Fig. 1, and the valve member may consist of a ball F, or a cone, mushroom, flat, or semispherical member. Fig. 3 shows the arrangement applied in a fluidactuated valve F operated by a leaky piston J<1> under the control of a pilot valve F<1> of similar type with an operating spindle J<2> and check piston, as above. The valve seating H for the ball valve F is located between a flange G and a cage I, L, the spindle end being formed as a cylindrical closure member in the cage I, L with an upper tapered part serving to graduate the opening for the passage of water. The ball valve may seat on the flange G when the cage I, L and upper parts are removed for re-washering the tap. The spindle is packed, as shown, and kept fluid tight by a washer O and spring N. The valve closure spring E is located in a tubular housing B screwed into the body A of the tap, as shown.
Patent GB-938884-A (GB)
Title: Parking means for vehicles
Inventor: SHAW CASTO FERNANDEZ
IPC: E04H6/28
Filed: 1960-02-09
Abstract: 938,884. Mechanical garages. ESPROGA SOCIEDAD LIMITADA. Feb. 9, 1960, No. 4489/60. Class 78 (4). A lift tower 1 in a mechanical garage is of polygonal section and is mounted at its lower end for rotation in a circular shaft so that it can give access to parking bays 3 disposed radially on each of several floors. The tower contacts the walls of the shaft only along the vertical edges of the tower, if at all. In the form shown, the tower is supported from a central bearing 4 and by tapered rollers 16 from rails 17. The tower is rotated by a worm and wheel 6, 7. The lift platform 9 is rectangular with extensions 10 forming bridges between the lift platform and the parking spaces. The lift tower may be formed of prefabricated stages, so that its height can readily be increased. The tower may be received in a well, as shown, to give access from the upper floor, or a tower mounted on the surface may be reached from the lower floor, or the tower may be partly received in a well so that access is by an intermediate floor.
Patent GB-556094-A (GB)
Title: Improved method of covering electrical components such as condensers with an insulating coating
IPC: H01G4/224
Filed: 1942-04-07
Abstract: 556,094. Condensers. RAHT, M., and WEGO CONDENSER CO., Ltd. April 7, 1942, No. 4547. [Class 37] [Also in Group VIII] An insulating material particularly for condensers and for covering electrical parts comprises a multiple layer strip of paper, wound into a roll, impregnated with, e.g. petroleum jelly or other slight adhesive dielectric, and unwound as required. The impregnation may be effected under vacuum heat. Condenser tissue paper is preferably used.
Patent GB-368945-A (GB)
Title: Improvements in friction clutches
IPC: F16D43/25
Filed: 1931-02-13
Abstract: 368,945. Friction clutches. MAGNET-WERK GES. EISENACH SPEZIALFABRIK FUR ELEKTROMAGNET-APPARATE, Eisenach, Germany. Feb. 13, 1931, No. 4611. Convention date, Feb. 15, 1930. [Class 80 (ii).] Operating clutches.-Overheating of friction clutches by prolonged slip is prevented by temperatureresponsive means acting to disengage them. The device may be incorporated in the vicinity of the friction surfaces 6, 8 of an electromagnetic clutch 3, 4 and be adapted to close a relay circuit acting to break the circuit of the winding 2. The temperature-responsive means may comprise a vessel 10 with a copper or other heat-conducting metal wall flush with the friction surface 8. Expansion of the air in the vessel brings a small contact-plate 12 on the diaphragm 11 into contact with an adjustable screw 13 to close the relay circuit (not shown). The sensitiveness can be increased by the use in the vessel 10 of small quantities of carbon bisulphide, sulphuric-ester, or like low-boiling- point liquid, whereby the clutch can be disengaged at temperatures below 50‹ C., particularly if the clutch is used in the neighbourhood of inflammable substances. Alternatively, the relay current may be directly produced by a thermocouple. The device may be situated at any point where the frictional heat can reach it sufficiently rapidly. The relay may be omitted, the clutch energizing-circuit being either broken or short-circuited by a spring- contact normally held by easily-fusible solder of selected melting-point. Electrical tripping of the disengaging means may be replaced by mechanical tripping, and the device can be applied to clutches other then electromagnetic.
Patent GB-574056-A (GB)
Title: Improvements in electron lenses
IPC: H01J29/62
Filed: 1942-04-08
Abstract: 574,056. Electron lenses. KLEMPERER, O. E. H. April 8, 1942, No. 4628. [Class 39 (i)] An electron lens which has a line focus is formed of two tubular electrodes, the end of one electrode having a pair of projecting portions which extend further along the electron stream than the parts between them. The second electrode may have a complementary shaped end contiguous to the first electrode, or may be of larger diameter so as to surround the end of the first electrode. The cross-section of the tubes may be elongated, square or circular. Apertured electrodes in curved diaphragms may also be used. In one form, two box-like electrodes A, B, Fig. 1, have their opposed edges 3, 4 and 7, 8 curved semicircularly. The other edges 1, 2 and 5, 6 may be straight or curved reversely, as at A<1>, Fig. 7. In a modification, the opposing electrodes may be cylindrical, as at A<11>, Fig. 6. The developed view of the edge of one electrode may show a series of alternately arranged semicircles or smaller arcs of circles, or alternate straight and circular arcs ; the edge of the other electrode showing a complementary curve. The curves of opposing edges may, however, be of different radii. To reduce spherical aberration, the curves may not be arcs of circles, but may have a greater curvature at the centre than at the ends. In the forms shown in Figs. 6, 7, a single curved edge electrode A<1> or A<11> is inserted into a larger cylinder C, shielding being completed by shields 25. The lens may produce a diverging effect so that one or both of the focal lines are virtual. In Fig. 8, a shield electrode D is closed by a curved diaphragm 28 in which is a slot 29 ; the further electrode may have a complementary diaphragm. A parallel beam passing through the slot is focused to a line perpendicular to the longer edges of the slot. Specifications 458,599, 553,466 and 573,901 are referred to.
Patent GB-1450571-A (GB)
Title: Hydraulic dampers
IPC: F16F9/36
Filed: 1973-01-30
Abstract: 1450571 Sealing piston-rods of monotube dampers GIRLING Ltd 29 Jan 1974 [30 Jan 1973] 4663/73 Heading F2S In a monotubular piston-cylinder damper containing liquid in direct contact with gas, the piston-rod extends out of the cylinder through a seal support 7a, a seal 6 and a pistonrod guide 4, part of the seal support contacting the seal and part being spaced from it to define a reservoir, which is supplied with liquid via a passage 11 during reciprocation of the pistonrod and maintains the seal wetted during periods of inactivity when the gas separates out to the top of the cylinder. The seal support 7a is formed with a central boss 9 which contacts the seal and is formed with radial grooves 11 which communicate with an annular recess 10 defining the reservoir. The inner periphery of the seal support 7a is spaced from the piston-rod so that liquid is supplied to the inner end of the grooves 11. The seal support may be made of metal and secured in the cylinder by staking. Alternatively (Fig. 1, not shown) it may be made of resilient plastics material, be secured in an annular groove (8) by it own resilience, and act as a bump-stop for the piston. Specification 1,203,435, which also has a reservoir for maintaining the piston-rod seal wetted, is referred to.
Patent GB-808622-A (GB)
Title: Apparatus for separating paraffin wax from mixtures of wax and hydrocarbon oils
IPC: C10G73/06
Filed: 1955-02-16
Abstract: <PICT:0808622/III/1> In an apparatus for dewaxing hydrocarbon oil according to the parent Specification in which the wax-oil mixture is sprayed downwardly in a tower against a rising current of air, the bottom of the tower is open and discharges into a downwardly narrowing funnel shaped member which is vibrated.  The funnel is preferably spaced from the base of the tower and the air current is introduced into the tower via the annular opening between it and the funnel.  The funnel is preferably cooled.  The drawing shows a tower a having spraying nozzle g through which a wax-containing oil is introduced.  A gas such as air enters the tower through annular opening c and leaves through chimney b. Funnel p forms the base of the tower and is provided with a cooling jacket r.  The funnel is coupled to a shaking device t which may be operated mechanically, pneumatically, electrically or by supersonic means.  Solidified wax falling on to the funnel is removed by tube e and treated with solvent.
Patent GB-271155-A (GB)
Title: Improvements in or relating to telegraph systems
IPC: H04L25/42
Filed: 1926-02-18
Abstract: 271,155. Automatic Telephone Manufacturing Co., Ltd., and Harrison, H. H. Feb. 18, 1926. Restoring or modifying imperfect signals; repeating systems using contact-making relays; automatic telegraphs.-In a relay system for restoring imperfect signals in triplex telegraphy, the input line relay charges a condenser on receipt of a signal, and the output relay is operated by subsequent discharge of the condenser, the charging period being longer than the discharging period. In the apparatus shown the successive elements of a message are dealt with alternately by the groups a and b of contacts. The input relay LR makes contact at 1 or 2 according as a positive or negative signal is being received, and thereby applies a positive or negative charge, as the case may be, to the condenser K, if the distributor brush CBA, is wiping one of the contacts a, or to the condenser K2 if the brush is wiping a contact b. The brushes CBA1, CBA2, CBA3 are on a common shaft and the brush CBA2 lies on a blank segment a" when the condenser K, is being charged through a contact a, but when the brush CBA2 passes over a contact a' the condenser K1 discharges through the instrument R1, which may register or retransmit the signal. During the discharge of condenser K1 condenser K2 is acquiring a charge through a contact b, the brush CBA3 lying then on a blank contact b<11>, but when that brush reaches a contact b<1> (while the brush CBA2 at the same time reaches a blank contact a") the condenser K2 discharges through a recorder or repeater R2. Thus one signal element is dealt with by the parts a, K1, R1, and the next element of the same signal by the parts b, K2, R2, an a signal being recorded or retransmitted while a b signal is being received, and vice versa. The charge given to each condenser is large enough to ensure that the instruments R1, R2 be energized during the whole period of contact of the brush CBA2 or CBA3 with its contact a' or b<1>. Owing to the large initial value of the discharge current the conditions are favourable for rapid signalling.
Patent GB-414777-A (GB)
Title: Improvements in synchronous alternating current motors
IPC: H02K21/38
Filed: 1933-02-16
Abstract: 414,777. Synchronous motors. JONES, F. HOPE-, 32, Clerkenwell Road, London. Feb. 16, 1933, No. 4754. [Class 35.] Motors with unwound iron armatures.-In a synchronous motor with the winding stationary one member is of cylindrical form and is permanently magnetized axially. In the form shown in Fig. 3, the ends NS of stationary magnets A co-operate with the teeth c, d formed in the periphery of the flanges C, D of the rotor whilst in a modification the magnets rotate and are surrounded by a toothed wound stator of channel section. In the form shown in Fig. 2A, stationary magnets A extend between a pair of toothed rings S which co-operate with a rotor similar to that shown in Fig. 3. In another modification, the stator consists of a magnetized cylinder placed between toothed rings similar to the ring S, Fig. 2A.