baber/WOPTO huggingface dataset:
Patent GB-1220688-A (GB)
Title: Mixing apparatus
Inventor: STRANG ALASTAIR
IPC: B01F5/06
Filed: 1967-06-29
Abstract: 1,220,688. Mixing in conduits. COURTAULDS Ltd. 25 June, 1968 [29 June, 1967], No. 30075/67. Heading B1C. Apparatus for mixing a liquid flow by subdivision, and re-combination of the partial streams, comprises a plurality of elements 1, 1' each having an even number of flow channels arranged end to end, the cooperating end faces of the elements being oblique to the general direction of flow whereby shear forces are also exerted on the liquid. Preferably the channels have a restricted throat as shown. The obliquity of the faces may be complementary so that the elements can be in a straight line as shown, or may be similar in successive elements so that they can be arranged in a curved path (see Fig. 5, not shown). The elements may be made of various metals or natural or synthetic plastics.
Patent GB-1082558-A (GB)
Title: Torsional vibration damper
IPC: F16F15/173
Filed: 1965-07-16
Abstract: 1,082,558. Torsional vibration dampers. B. E. O'CONNOR. July 16, 1965 [July 29, l964], No. 30275/65. Heading F2S. A torsional vibration damper comprises an annular metal casing 2 containing a liquid and having side walls 26, 28 which are bowed outwardly whereby each side wall has an arcuate cross-section and in which an annular metal inertia member 4 is supported concentrically by inner and outer pairs of ring-shaped bearings 6, 8. The inertia member 4 co-operates with the annular flat walls 18, 20 of an inner casing, the inner and outer casings being each formed of an interfitted pair of annular metal stampings of U-shaped cross-section. Each of the inner walls 18, 20 has a plurality of circumferentiallyspaced openings 30, 32 to equalize the pressure on both sides of the 'respective wall. The outer side walls 26, 28 have a curvature corresponding to the shape to which they would tend to be stretched by the internal fluid pressure during rotation if they were initially made flat. If desired, the inner side walls can be eliminated, the inertia member 4 being constructed with side walls having the same bowed shape, but spaced from, the side walls 26, 28 of the casing.
Patent GB-535952-A (GB)
Title: Improvements in image suppression systems in radio receivers
IPC: H03D7/18
Filed: 1939-11-17
Abstract: 535,952. Band-pass filters. JOHNSON LABORATORIES Inc. Nov. 17, 1939, No. 30287. Convention date, Jan. 19. [Class 40 (iii)] In a radio receiver, image-frequency interference is minimised by providing a trap circuit for image frequency signals between the aerial and the input electrode of the first valve, the arrangement being such that as the input circuit is tuned to the signal frequency, the trap circuit is automatically and simultaneously tuned to the corresponding image frequency. Resonant circuit 9 comprising inductance 4 and condensers 3, 8 is tunable to the signal frequency by moving the core 6 of coil 4. The high potential side of circuit 9 is connected to control grid 10 of the first valve 11. Inductance 4 and capacity 7 form a resonant circuit 15 which is arranged so as to be tuned to the image frequency as inductance 4 is varied for tuning to the signal frequency. Circuit 15 is in series between the aerial 1 and grid 10 and so provides a high impedance for image-frequency signals but low impedance for the desired signals.
Patent GB-187859-A (GB)
Title: Improvements in devices for holding safety razor blades
IPC: B26B5/00
Filed: 1921-11-14
Abstract: 187,859. O'Meyer, J. Nov. 14, 1921. Razors, safety.-A holder for a safety-razor blade comprises a base member b and a handle e pivoted together, and a plate member l adapted to be moved translationally by the pivotal movement of the handle and member b so as to lock the blade c in position on the member b. The sliding movement of the plate l is effected by an eccentric d<1>, Fig. 7, upon the handle lug a, engaging a recess d" in the plate. In a modification, Fig. 10, a pin n projecting from the handle lug a engages a slot o in the plate l, and effects the required movement. When the holder is closed the handle e and a tubular flange on the base member b protect the two cutting edges of the blade. The holder may be locked in the aligned position by a sliding bolt f, which fits the bore of the tubular flange or by a tooth on the handle engaging a recess in the member b. The member b may be provided on the side remote from the flange with the usual toothed comb employed in safety razors.
Patent GB-474181-A (GB)
Title: Process for the production of ammonium nitrate and mixtures containing the same and apparatus therefor
IPC: C05C1/00
Filed: 1936-11-06
Abstract: <PICT:0474181/III/1> In obtaining ammonium nitrate and mixtures containing the same by the interaction of ammonia and nitric acid in a circulating liquor, the vapour generated by the heat of reaction after introducing the reactants into the circulating liquor is utilized for keeping up the circulation of the liquor.  As shown in the Figure, the circulation system comprises a boiler B operating under vacuum and an open container D connected by two pipes A and C. The boiler B is connected to a liquid separator H, a water jet condenser J and a vacuum pump K.  Ammonia is introduced at F and nitric acid of 42,5 per cent strength is introduced at E into the ascending flow of circulating liquor in the tube A while a pressure of 700 mm. is maintained in the boiler B.  The heat of reaction causes a temperature of 90 DEG  C. to be attained in the tube A and near the top of the tube the liquor commences to boil, the liberated vapour maintaining the circulation.  The temperature drops to 70 DEG C. in the boiler and the liquor descends through the tube C. Ammonium nitrate liquor is withdrawn from the container D.  Other components can be introduced with the acid or separately at G.  In the production of fertilizers nitric acid may be replaced by admixtures thereof with sulphuric acid, phosphoric acid, nitrates, sulphates, phosphates, chlorides and the like. Clay, loess, comminuted peat and the like may also be added at any suitable point in the circulation.  Instead of a single ascending tube A and a single descending tube C a plurality of such tubes may be provided. It is also possible to arrange the tubes concentrically one within the other.  German Specification 349,330, and French Specification 730,380 are referred to.ALSO:In obtaining mixed fertilizers containing ammonium nitrate by the interaction of ammonia and nitric acid in a circulating liquor while introducing other substances into the circulation, the vapour generated by the heat of the reaction after introducing the reactants into the circulating liquor is utilized for keeping up the circulation of the liquor.  The nitric acid may be mixed with sulphuric acid, phosphoric acid, nitrates, sulphates, phosphates, chlorides, &c.  Clay, loess, comminuted peat, &c. may also be added at any suitable point in the circulation.
Patent GB-1041770-A (GB)
Title: Production of polyoxymethylene derivatives
IPC: C08G2/32
Filed: 1965-07-16
Abstract: Esterified polyoxymethylene is produced by (a) polymerizing anhydrous formaldehyde in a reaction medium of (1) an anhydride of a saturated monocarboxylic acid and (2) as catalyst a metal alcoholate of formula (RO)nM, where R is an alkyl, cycloalkyl, aryl, aralkyl or alkaryl radical, n is 1, 2 or 3, and M is a metal of valence n of Group IA, IB, 2A, 2B or 3A, at -50 DEG  to +40 DEG  C., (b) separating the polymer, (c) forming a mixture of the polymer and an amount of an anhydride of a saturated monocarboxylic acid sufficient to provide at least 1.5 parts of the anhydride per part polymer, (d) heating to 80 DEG  C. up to the boiling point of the mixture to esterify the terminal hydroxyl groups of the polymer and (e) recovering the esterified polymer. It is preferable that the formaldehyde contains less than 0.1% water and the anhydride less than 1% water while the anhydrides in steps (a) and (c) may be the same and may be those of aliphatic acids containing one to ten carbon atoms, e.g. acetic anhydride. Preferred catalysts are trimethoxy, triethoxy, triisopropoxy and tri-t.-butoxy, aluminium.
Patent GB-456195-A (GB)
Title: Improvements in or relating to fluid pressure apparatus on vehicles for jacking and for inflating tyres
IPC: B60S9/10
Filed: 1935-11-04
Abstract: 456,195. Actuating pumps and compressors. FRANCIS, R. G., and BONNYMAN, J. H., Strathnaver, Lavernock Road, Penarth, Glamorgan. Nov. 4, 1935, No. 30406. [Classes 8 (i) and 102 (i)] Tyres are inflated or fluid pressure jacks on motor vehicles operated by a connected pair of pumps comprising pistons P, P2 in cylinders C, C2 with inlet and outlet valves, deriving power from the cylinder of a steam or internal - combustion engine, with which the larger cylinder C is placed in communication by a port G1 and a short pipe with a valve or cock. The larger cylinder may deliver air and the smaller cylinder oil, or the outlet of the cylinder C may be connected to the inlet of the cylinder C2 for use as a two-stage air compressor. When connected to a steam cylinder, a return spring is fitted behind the piston P. The device may be controlled from the driver's seat. The invention consists in providing for manual operation in case of engine failure by removing a cap CA and plug DP and inserting a rod CR, Fig. 4, which is screwed into the piston, a hand lever LH pivoted thereto being fulcrumed by a link L to a bracket F on the cylinder.
Patent GB-1384037-A (GB)
Title: Photomasks
IPC: G03F1/68
Filed: 1973-06-26
Abstract: 1384037 Photographic light-sensitive material for photo-masks ZLAFOP PRI BAN 26 June  1973 [17 July 1972] 30432/73 Headings G2C and G2X Photographic material for producing photomasks directly comprises in order i) a glass substrate, ii) a layer of metal or metal oxide, e.g. nickel, chromium, nickel-chrome alloy or iron oxide, iii) a photo-resist layer, iv) a synthetic resin layer e.g. of phenol-formaldehyde resin, and v) a light-sensitive vacuum-deposited silver halide layer. To produce a photo-mask the silver halide is exposed and developed and the silver image used as a mask during exposure of the photo-resist  layer; the synthetic resin layer with the silver image is then washed off with solvent and the photo-resist is developed; etching of the metal or metal oxide layer is then effected and the remaining photo-resist is removed. The photo-resist may be positive or negative working; the synthetic resin layer may contain a light-absorbing dye and the silver halide layer may be sensitized with goldiridium salts and may be negative working or may be sensitized by a vacuum-deposited monoatomic metal layer e.g. a silver layer and may be positive working.
Patent GB-299425-A (GB)
Title: Improvements relating to the synthetic production of benzene and derived hydrocarbons
IPC: C07C2/48
Filed: 1928-10-20
Abstract: 299,425. Conte, J. Ylla-. Oct. 26, 1927, [Convention date]. Polymerized hydrocarbons.-In an improved process for producing benzene and derived hydrocarbons by condensation of acetylene gas by heating the gas in an iron or steel vessel to the temperature of reaction and causing this gas to circulate through a refrigerator arranged outside the vessel to separate the products formed by condensation and then injecting the cold gas into the reaction vessel again to prevent rise of temperature and to mix the gas, the reaction vessel is arranged so as to form an endless conduit inside, combined with a fan or other mechanical means to cause the continuous circulation of the gas. The installation shown comprises a reaction vessel 1, of sheet iron or steel, heated by an exterior hearth 3, the combustion gases passing through the flues 2, 4, 5 to the chimney. In the upper part of the vessel 1 is an inlet 6 for the acetylene, and also an outlet pipe 7, with an exhaust 9, to withdraw the gases and circulate them through a refrigerator 8, which condenses the hydrocarbons formed. The residual gas then passes back to the reaction vessel via inlet 10, or is injected into a second reaction vessel in series with the first. An interior tube 13, open at its ends, forms an endless conduit for the acetylene, which is circulated by a fan 14, thus preventing local accumulations of heat and decomposition of the acetylene. This internal circulation of the gas is independent of the exhauster 9, so that the flow of gas through the refrigerator 8 can be regulated in accordance with the amount of hydrocarbons formed and the temperature of the reaction.
Patent GB-159635-A (GB)
Title: Improvements in or relating to domestic washing boards
IPC: D06F1/00
Filed: 1919-12-05
Abstract: 159,635. Pickard, W. Dec. 5, 1919. Washing-boards.-The rubbing-surface is provided with loose balls c of wood, glass, &c. which project through holes in the metal sheet a and are retained by a removable backing d. Fixed hemispherical protuberances b or corrugations may be combined with the balls.
Patent GB-285193-A (GB)
Title: Improvements in hot water bottles made of india rubber
IPC: A61F7/08
Filed: 1926-12-02
Abstract: 285,193. Knopf, J. Dec. 2, 1926. Hot-water bottles. - Rubber hot-water bottles are provided with a separate inner lining. The rubber body is moulded in the usual way and removed from the core, and a separate lining of woven or other material, coated or not with rubber solution, is inserted in the bottle and inflated to obtain good contact. The lining may have a neck for inflation, which afterwards strengthens the neck of the bottle. A lining may be made of two pieces of textile material e, f, the latter having flaps g cemented to the part e. The corners are turned over and cemented at h. The lining may be rolled up and inserted through the neck into the body, and after inflation, the neck is cut off at j. In a modification, an indiarubber lining may be formed by dipping, or from sheet rubber, and then cemented and inserted into the bottle.
Patent GB-627314-A (GB)
Title: Improved carrier wave telephone system
IPC: H04B1/50
Filed: 1946-10-15
Abstract: 627,314. Carrier transmission. WESTERN ELECTRIC CO., Inc. Oct. 15, 1946, No. 30689. Convention date, Oct. 27, 1945. [Class 40 (iv)] [Also in Group XL (c)] A carrier-wave telephone system comprises a carrier terminal station CT and a group of subscribers' stations such as A connected to a common transmission medium which may be an electrical power line 1. All communications pass through the carrier terminal station. Signals from station CT to subscribers are transmitted on a carrier of frequency f1. A subscriber answering any call or calling a party outside the group through a central office 36 transmits on'a carrier frequency f2. A subscriber calling another subscriber in the same group transmits on a carrier frequency f3. A number of groups of subscribers using different sets of three carrier frequencies may use the same line 1. Operation. The oscillator 8 at a subscriber's station is switched on by contact 12a when the handset 26 (Fig. 3) is raised. The oscillator normally generates a frequency f2 characteristic of the tuned circuit comprising a coil 23a and a condenser 24. By closing key 27 until the handset is raised, relay 28 may be operated and held to include a condenser 25 in the tuned circuit and to change the frequency generated to f3. At the C.T. station, the carrier f2 or f3  is filtered, amplified and demodulated in circuit 31 or 32 and by operating relay 49 or 50 closes the loop 35 to the central office 36 and starts the C.T. oscillator 39, frequency fl. Speech currents over the line 1 after demodulation are passed over an unbalanced hybrid coil 33 in part to the central office and in part back to the line over circuit 30. The operator at 36 completes the connection. If the wanted subscriber is on the same line 1, the operator rings with a prearranged code. At each subscriber's station in the group the carrier f operates a ringer 18 and a relay 19, the latter operating a busy-lamp 20.
Patent GB-707381-A (GB)
Title: Improvements relating to multi-colour printing
Inventor: SARK ASTRA IVANOWNA
IPC: B41M1/20
Filed: 1949-11-30
Abstract: Compositions for making a polychromatic printing block (see Group XVI) are given as follows.  (1) (a) A vinyl copolymer resin or a blend of polyvinyl resin and butadiene-acrylonitrile polymer 50-60 gms., cyclo-hexanone 50-65 gms., and 8 pts., of a blue dye in 10 pts. of dioctyl phthalate 20-40 gms.; this composition may be used as it is, or 30-35 gms. of it may be mixed with stearic acid 1-2 gms., phenolic resin 2-3 gms., petroleum jelly 1-2 gms. and, according to the Provisional Specification, kaolin 14-16 gms.  (b) A blend of polyvinyl resin and butadieneacrylonitrile polymer, or a latex thereof, 25-30 gms., stearic acid 2-3 gms., cyclohexanone 4-6 gms., petroleum jelly 1-2 gms., and pigments 20-30 gms.  (2) (a) Urea-formaldehyde resin or modified melamine-formaldehyde syrup 5-10 gms., gum (arabic, dextrine) 50-70 gms., and pigment paste (20-30 per cent. solids by wt. in glycerine) 15 gms.  (b) Modified melamine-formaldehyde syrup 10 gms., gum 10 gms., pigment powder 2-5 gms., glycerine 5 gms., and soap powder 0.2-0.5 gms.  A design printed with these compositions is cured by heating to 100 DEG C. (3) Nitrocellulose 50 gms., urea-formaldehyde resin 1.2 gms., alkyd resin 15-30 gms., dibutyl phthalate 30-40 gms., pigment powder or paste 15-20 gms.ALSO:A composition for making a polychromatic printing block (see Group XVI) consists of ceresin 24 gms., beeswax 12 gms., petroleum jelly 4 gms., and powder or paste pigments 2-4 gms.  One or more of the following solvents may be used for printing: turpentine, acetone, ethyl acetate, ethyl lactate, amyl acetate, butanol.
Patent GB-1004180-A (GB)
Title: Fertilizer compositions
Inventor: ARTHUR JOHN REX
IPC: B01J2/00
Filed: 1960-09-07
Abstract: A granular fertilizer composition containing nitrogen and phosphorus and/or potassium comprises a physical mixture of granular products of different composition, at least one granular product comprising substantially one or more nitrogen compounds and being of moisture content not more than 0.5%, and at least one granular product not comprising substantially one or more nitrogen compounds and being of a moisture content in the range 0.5-2.0% by weight, the moisture content of the granular product comprising substantially one or more nitrogen compounds being not more than 75% of that of the other products.  The nitrogen-containing granular product may consist substantially or exclusively of one or more of ammonium nitrate, ammonium sulphate nitrate, ammonium phosphate nitrate, potassium nitrate, ammonium phosphate, or urea. The other products may comprise superphosphates or potassium chloride.
Patent GB-618322-A (GB)
Title: Improvements relating to the electrodeposition of nickel on nickel
IPC: C25D5/40
Filed: 1946-10-16
Abstract: 618,322. Electrodeposition of nickel. MOND NICKEL CO., Ltd. Oct. 16, 1946, Nos. 30850 and 30851. Convention dates, Oct. 25, 1945, and Dec. 3, 1945. [Class 41] In the electrodeposition of nickel on a nickel surface, e.g. a nickel starting sheet or a previous nickel plating, good bonding is promoted by preliminary treatment of the surface in an aqueous acid bath containing at least 9 grams/ litre of chloride ions, e.g. in the form of sodium chloride, and from 0.5 to 30 and preferably from 2 to 10 grams/litre of cupric ions, e.g. in the form of copper sulphate. Hydrochloric acid of from 50-200 grams/litre may be used both to render the bath acidic and to provide the chloride ions. Sulphuric acid may be used to render the bath acidic. The nickel surface may be simply immersed in the bath from 5 to 10 minutes, the bath having from 30 to 36 grams/litre of chloride ion and being continuously agitated as by blowing compressed air therethrough to maintain the copper in the cupric state. Alternatively, the nickel surface may be made anode in the bath with current density of at least 5 amps./ft.<2> for at least two minutes. The nickel surface after treatment is rinsed in water and. the deposition effected before the formation thereon of any passive film. The anodic treatment may be interrupted from time to time and compressed air blown through the bath during the interrupting to redissolve the sponge copper deposited at the cathode. The bath used in the anodic treatment is preferably treated for the recovery of nickel when the nickel concentration reaches 50 grams/litre.
Patent GB-1009397-A (GB)
Title: Feeding apparatus for feeding rod-like or elongate bodies
Inventor: SCHOWANEK HANS
IPC: B65G47/14
Filed: 1962-08-11
Abstract: 1,009,397. Feeding wooden rods; endless conveyers. J. SCHOWANET G.m.b.H. Aug. 11, 1962. No.30870/62. Headings B8A and B8S. Rods are discharged from hopper 6, and delivered on to rollers 2 for discharge therefrom to the right, by pushers 5 which are carried by chains 4. Slots are formed in hopper 6 by which the pushers 5 enter the hopper and receive and carry up a rod. The rod travels up a slope of the hopper bottom and meets fixed projection 3 which causes any surplus rods to fall back into the hopper 6 and permits each sets of pushers 5 to discharge a single rod on to the rollers 2. Pushers 5 may be of spring, or rubber, and may be varied in length.
Patent GB-312092-A (GB)
Title: Improvements in wheel guards, and, like safety appliances for, self propelled vehicles
IPC: B60R21/34
Filed: 1927-11-18
Abstract: 312,092. Williamson, H. Nov. 18, 1927. Wheel-guards and obstruction-removers.-In a combined wheel and front guard for motor &c. vehicles of the kind which is mounted on a member or members movable with the steering-gear and adapted, when an obstruction is encountered, to be forced downwardly, the guard is supported on the said member or members by a flexible connection and is balanced on this connection about an horizontal pivot located in the vertical plane containing the wheel axle. In the construction shown, the wheel-guard 1 is supported by springs 7, Fig. 2, on the arms 6 of a bracket 5 attached to the controlling spring 2 at a point above the stub axle pivot, one end of the spring 2 being secured to the stub axle pivot and the lower end to the steering-arm 4. Further springs 9 connect the lower part of the bracket 5 to a rod 10 extending between the extremities of the guard 1, while the bracket 5 also supports a circular shield 12 for preventing persons caught on the central guard coming into contact with the wheel spokes. Between the spring 2 and guard 1, there is also disposed a leaf spring 13 connected to the extremities of the guard and pivoted centrally to the spring 2 by means of a lug 14. The springs 7, 9 serve to prevent lateral and longitudinal vibration of the guard during the normal running of the vehicle, while the springs. 2, 13 return the guard to its initial position after an obstruction has been encountered and subsequently withdrawn. The centre guard is attached to the side guards by ball or flexible joints and comprises transverse bars 15, 16, longitudinal bars 17, raised back-bar 18, and a front bar 19 which is connected to hinged toe-pieces 20 mounted on the guards 1 and held in a raised position against the influence of springs 21, Fig. 1, by Bowden wires 23 under the driver's control. When the driver depresses a button 24, Fig. 4, on the brake lever 24a, the wire 23 is released and the springs 21 force the toe-pieces 20 and front-bar 19 into contact with the ground, the friction thereon causing the entire guard to swing downwardly. A pawl and ratchet device 25, 26 allows the driver to adjust the initial height of the bar 19 above the ground. In a modification the spring 2 is formed in two parts, and the spring 13 is dispensed with. The operation of the guards may actuate the brakes or engine stopping means, or give alarms or signals.