baber/WOPTO huggingface dataset:
Patent GB-688777-A (GB)
Title: Improvements in or relating to diaphragm pumps
IPC: F04B3/00
Filed: 1950-06-27
Abstract: 688,777. Flexible - chamber pumps. MERRILL, I. N., and MERRILL PUMPS, Ltd. June 26, 1951 [June 27, 1950], No. 15977/50. Class 102 (i). Two flexible tubes 11 are mounted within adjacent chambers 14 which are supplied with a pulsating liquid pressure to pump liquid from inlet 38 to outlet 39 through valves 17; a cage comprising rods 18 is arranged within each tube. The device for producing the pulsating liquid pressure comprises two pistons 20 attached to the ends of an oscillating rod 21 actuated by a connecting rod 30 from an electric motor. The space 34 is connected to the space 35a by a passage and both spaces connected by port 37 to one of the chambers 14; similarly, spaces 34a. 35 are connected to the other chamber. A reservoir 22 is arranged between the pistons and ports 32. 33 in the pistons align with ports 31 at each end of their strokes so that the pressure of the operating liquid is equalised with the pressure in the reservoir at each end of the stroke. The tubes may be arranged in parallel or in series.
Patent GB-837070-A (GB)
Title: Improvements in the manufacture of caprolactam
Inventor: ENGLAND RICHARD JAY
Filed: 1958-05-19
Abstract: Crude caprolactam is purified by a method comprising dissolving the crude lactam in a heated substantially water-immiscible organic solvent therefor, cooling the resulting solution sufficiently to cause a major proportion of the caprolactam to crystallize out, separating the bulk of the crystalline caprolactam, agitating the liquid residue with 1/2 -4 parts by weight of water for each part of caprolactam contained therein (the amount of lactam in the solution being reckoned as including any "fines" that may be present and, when the treatment with water is effected in the vessel used for the crystallization, any solid deposits on, for example, cooling coils or walls remaining in the vessel after the bulk of the recrystallized lactam has been removed) to extract caprolactam therefrom, stratifying the resulting mixture and separating the purified caprolactam-containing aqueous layer from the organic layer containing colour-forming impurities.  The method is applicable to the recovery of caprolactam from the crude material obtained by the rearrangement of cyclohexanone-oxime in a concentrated sulphuric acid medium followed by neutralization with ammonia, separation of water-wet crude caprolactam and its drying in a still or by a variation of this method wherein a chlorinated hydrocarbon is present in the rearrangement medium and the still is used to remove water and the chlorinated hydrocarbon.  The crystallization is preferably effected from perchlorethylene or a mixture of heptane isomers.  The extraction of lactam from the liquid residue is substantially complete if the weight of water at least equals half that of the lactam; this extraction may be effected in one or more stages and if desired in continuous manner.  The aqueous extract may be recycled to the abovementioned still with fresh crude lactam reaction product or may be dehydrated in a separate still.
Patent GB-147340-A (GB)
IPC: C10B7/06
Filed: 1919-06-26
Abstract: 147,340. West, J., and West's Gas Improvement Co. June 26, 1919. Feeding-devices for endless-chain conveyers.- In means for transferring a measured quantity of material such as coke from a hopper b to a bucket conveyer a of the kind comprising a pivoted plate c carrying a closure-piece d, crushing of the material during the movement of the closure-piece to close the outlet is obviated by providing a free space e in the side of the hopper. The plate c is maintained in position to receive material from the hopper by a spring or counterweight, but is moved to the position shown as each bucket comes into loading position by a radial arm j and star cam m. The conveyer rollers n engage a grooved wheel o to which the cam m is adjustably secured. In a modification, the plate c has a closure-piece at each end and is rotated continuously.
Patent GB-727544-A (GB)
Title: Improvements in liquid dosing apparatus
IPC: B01F15/04
Filed: 1953-06-11
Abstract: 727,544. Proportionate dosing of liquids. BEKKER, J. G. June 11, 1953 [June 26, 1952], No. 16153/53. Class 86. In a liquid dosing apparatus the dosing solution from a container 1 is conveyed to the liquid to be dosed by a flexible tube 5 which is connected at 6 to the container 1 just above its base 2, and is cut at a central point, the two parts of the tube communicating through a junction-box 8 which is open to the atmosphere. The junctionbox 8 is slidably mounted at the side of container at the level of the contents of the container and is arranged to be lowered by means directly and mechanically driven by a liquid flow meter 3 in the flow line 4 of liquid to be dosed, the dosing solution being thereby delivered along the tube 5 at a rate proportional to the rate of flow of liquid through the meter 3. The drive from the flow meter may comprise a sprocket 10 and an endless chain 11 engaging a projecting tooth on the junction-box 8. When the junction-box 8 reaches its lowest position it is deflected so that its projecting tooth is disengaged from the chain. An endless belt and pulley drive, Fig. 3 (not shown), may be used instead of an endless chain drive. The junction-box may be provided with means to close an electric signalling circuit when it reaches its lowest position.
Patent GB-752023-A (GB)
Title: Improvements in or relating to circuit arrangements for the seizure of one of a plurality of devices
IPC: H04Q3/00
Filed: 1954-06-01
Abstract: 752,023. Automatic exchange systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. June 1, 1954 [June 4, 1963], No. 16186/54. Class 40 (4). In an arrangement for seizing one out of a number of devices I, each device is provided with a circuit 1, 2 arranged to operate as a bistable state circuit when a seizing potential is applied over the cathode resistor 12 which is common to the valves 1 of all the devices. The latter is dimensioned so that if one of the valves 1 is conducting the valves 1 in the other devices are all cut-off. The conducting valve, however, cuts-off valve 2 thereby raising its own grid potential to keep it conducting. The seizure is registered by the release of the anode relay 5. The device may be used for the seizing of an idle line finder by an allotter, or for the seizure of a marker by a register or for the seizure of a selector having access to a line in a wanted direction.
Patent GB-1211106-A (GB)
Title: Improvements in method and apparatus for classifying finely-divided solids carried in a gas stream
IPC: B07B7/01
Filed: 1968-04-04
Abstract: 1,211,106. Pneumatic separation of solids. KENNEDY VAN SAUN CORP. 4 April, 1968 [18 April, 1967], No. 16186/68. Heading B2H. Finely-divided solid particles carried in a stream of gaseous carrier medium are classified according to size by conducting a main stream of gaseous medium and particles in continuous flow into one side of an expansion chamber 26 of a classifier, causing the stream of particles to flow downwardly and inwardly towards an outlet 20 for relatively coarse particles, passing a number of separate streams of stripping gaseous medium transversely through the downwardly flowing stream of solid particles to remove relatively fine particles therefrom and suspend them in the chamber 26 and removing the suspended fine particles from the top of the chamber in a stream of the gaseous medium. As shown, particles and air are fed via a duct 42 and an inlet 18 into a preliminary separation chamber 24 from which part of the air and fine particles are drawn off through a duct 44 provided with a pivotable control gate 46 to a fine particle outlet duct 22 which may be connected to a fan through cyclone separators. The bulk of the air and particles flow through the chamber 24 into the expansion chamber 26 via a passageway 48 which is controlled by a pivotable gate 62. Secondary air with some fine particles is drawn off from the chamber 24 through ducts 56, 58, 60 controlled by pivotable gates 50, 52, 54 and is discharged through successively lower outlets 61, 59, 57 transversely through the stream of particles flowing downwardly from the passageway 48, thereby to separate the fine particles which are removed with the air through the outlet duct 22 while the coarse particles continue downward and are removed through the outlet 20. The effective volume of the expansion chamber 26 is adjustable by means of a swinging gate 30 fixed to a pivoted shaft 32 operable by a lever on the outside of the classifier by means of a hydraulic piston and cylinder unit. The gate 30 has a rigid section 34 and a swingable section 36 positioned by chains 38. When the gate 30 is moved to the right, the effective size of the chamber 26 is decreased and hence the velocity of the air and the size of the solid particles moving upwardly through the duct 22 are increased. The size of the solid particles through the duct 22 may also be increased by closing off the duct 44.
Patent GB-1016231-A (GB)
Title: Improvements in or relating to the construction of rotary type electric switches
Inventor: PUGH ERNEST JOHN
IPC: H01H19/58
Filed: 1961-05-04
Abstract: 1,016,231. Mechanical switches, without quick action. PLESSEY CO. Ltd. May 2, 1962 [May 4, 1961), No. 16274/61. Heading H2B. A rotary wafer switch has a rotor 7 comprising two insulating sections 10, 14 of thermo-plastic material each carrying at least one projecting pin 15 which locates a movable wafer contact 6, the two rotor sections being joined together by a heating operation. The contacts 6 are located on one or more of the pins 15 which are then deformed by heat or by a combined heating and pressing operation to fix the contacts on the rotor. Section 10 has two or more further pins 12 which locate in apertures 13 of section 14, the pins 12 then being deformed to hold the two sections together, either by a combined heating and pressing operation or by a heating operation.
Patent GB-1032302-A (GB)
Title: Control system for roller mills
Inventor: SCHUBERT ARTHUR
IPC: B02C4/38
Filed: 1964-04-21
Abstract: 1,032,302. Clutch and change speed control. MIAG MUEHLENBAU UND INDUSTRIE G.m.b.H. April 21, 1964, No. 16438/64. Headings F2D and F2L. [Also in Divisions B2 and G3] A control system for a roller mill comprises a piston 4, 41 fixed axially relative to a movable carriage 2 and controlled by a valve 68 to move the carriage against a spring loading 25. The piston 4, 41 is rotated by a driven pulleywheel 22 through gears 23, 43 and has a gear portion 42 which drives a gear pump 92 through gear 93. The gear pump supplies actuating fluid for the piston through passages 132, hydraulic switch 71 and passages 133, 134 to chamber 13<SP>1</SP>, this chamber being connected by passage 44 to a chamber 48 in the piston, the valve 68 controlling the connection of chamber 48 to an exhaust passage 46, 84. The valve 68 has a head 69 engaging a groove 66<SP>1</SP> in a rotatable member 66 which member is rotated against a spring loading 60 by a stock feeler input member 6 acting through lever 62, shaft 63 and spindle 65. With the pulley wheel 22 driving the gear pump 92 through the piston 4, 41 fluid is supplied to the hydraulic switch 71 and flows through port 75, chamber 77 and port 76 to a by-pass port 12<SP>1</SP>. To start the control system, the switch button 72 is depressed to close the port 12<SP>1</SP> and the fluid flows past the needle valve 73 to passage 133. The pressure in chamber 77, after the by-pass is closed is sufficient to hold the switch against the loading of spring 78. The pressure in chamber 13<SP>1</SP> then moves the piston 4, 41 to follow the movements of the control valve 68 and thus moves the carriage 2. Movement of the carriage 2 causes the cone shape pulley 22 to drive a cup wheel 52, gear 52<SP>1</SP> and gear 54<SP>1</SP> on shaft 54, the cup wheel 52 being carried by a part 5 pivoted in a wall 14 and loaded by a spring 53 and thus the speed of shaft 54 is dependent upon the axial position of pulley 22 with respect to cup wheel 52. The carriage 2 also acts through a rod 3 to adjust a cam 33 to actuate the feed valve 35. The cam has a varied axial surface adjusted by rotation of the rod 3 by a handle 31. The fluid pressure acting on the piston 4, 41 is also fed through passage 94<SP>1</SP> to a piston 94 which adjusts the relative position of the grinding rollers and once this piston has moved a certain distance, the supply is fed through passage 56<SP>1</SP> to act on a piston 56 to engage a clutch 55<SP>1</SP> so that the shaft 54 drives the feed rollers 36. The connection between shaft 63 and spindle 65 may be disengaged by a connecting stop 64 to enable the valve 68 to be returned to a no stock feeler position. The safety switch 71 may also be pulled to open the by-pass 12, this action also occurring with failure of the fluid supply. Both these actions move the carriage 2 to the position shown, disengage the clutch 5 and move the grinding rollers apart. When the clutch is engaged, a switch 91 is actuated to light a lamp 95.
Patent GB-798165-A (GB)
Title: Improvements in and relating to derivatives of purí¡í¡
IPC: C07D473/24
Filed: 1955-06-08
Abstract: The invention comprises 1-methylthioguanine and its preparation by reacting 1-methylguanine with phosphorus pentasulphide in an inert solvent, e.g. pyridine and similar bases.  The reaction is preferably effected by heating the reaction mixture to at least 100 DEG  C., and advantageously the mixture is refluxed for 3 hours. An example is given.
Patent GB-885044-A (GB)
Title: A process for the production of carvomenthene oxide
IPC: C08G59/14
Filed: 1959-05-14
Abstract: A cured epoxy resinous product is prepared by mixing together an epoxy resin, carvomenthene oxide (which has been prepared by reacting limonene monoxide with hydrogen in the presence of a finely divided platinum-containing catalyst) and a curing agent, allowing the compounds to react on each other and then heating to complete the curing.  Suitable curing agents are polyamines, polybasic acids or anhydrides.  In an example, carvomenthene oxide is dissolved in a condensation polymer of epichlorohydrin and bisphenol-A and the solution is mixed with diethylene triamine, kept at 23 DEG  to 27 DEG C. for 20 hours then heated for 2 hours at 100 DEG  C. to form a cured product.ALSO:The invention comprises carvomenthene oxide which may be produced by reacting limonene monoxide with hydrogen in the presence of a finely divided platinum-containing catalyst until 1 mole of hydrogen has been reacted per mole of limonene monoxide. The hydrogenation may be conducted at 25 DEG C. to 45 DEG C. at a hydrogen pressure of 1 to 15 atmospheres, in the presence or absence of an inert organic solvent, such as methanol, ethanol or isopropanol. The catalyst may be platinum or platinum oxide and may be deposited on a carrier such as calcium carbonate or aluminium oxide.  The reaction may be conducted by passing the reaction mixture through a fixed bed of catalyst or by employing a fluidised dispersion of the catalyst in the reaction mixture. Carvomenthene oxide is useful as a reactive diluent for epoxy resins (see Group IV(a)).  The limonene monoxide may be produced by reaction of limonene with peracetic or other aliphatic peracids or perbenzoic acid.
Patent GB-193770-A (GB)
Title: Improved method of manufacturing rubber goloshes
IPC: A43B23/04
Filed: 1922-06-14
Abstract: 193,770. Dunker, H. C. L., and Stibe, L. G. A. June 14, 1922. Connecting uppers to insoles and soles; goloshes.- Rubber goloshes are manufactured on a last by first taking a blank, Fig. 1, of rubber, preferably lined with fabric, stretching it over a last and attaching the edges a, a' and b, b<1> on. the upper side of the last, then applying the necessary caps over the joints and, finally, finishing the golosh in any known manner. The central portion of the blank forms the sole, and may be of suitable thickness, or an outsole may be secured when the golosh is on the last. The usual heel and toe caps may be secured over ribbons covering the joints a, a<1> and b, b<1>. When on the last the edges of the upper are secured by a strip m, Fig. 8. A cap k is drawn upwardly and rearwardly to produce the curvature under the hollow of the foot, and its edges secured to each other at the rear of the heed.
Patent GB-736632-A (GB)
Title: Improvements in or relating to platinum catalysts
Inventor: HEARD LLEWELLYN
IPC: B01J37/20
Filed: 1953-06-16
Abstract: A hydrocarbon conversion catalyst is prepared by mixing a platinum compound with a solution of a sulphide of a nitrogen base to form a stable solution or colloidal suspension of platinum sulphide, mixing this solution or suspension with alumina, and drying and calcining. An aqueous solution of chloroplatinic acid or platinum tetrachloride may be mixed with an aqueous solution of ammonium sulphide, hydrosulphide, or polysulphide at a temperature of 40-175 DEG  F. and then mixed with a suspension or hydrosol of alumina.  Alternatively hydrogen sulphide or sodium sulphide is added to chloroplatinic acid solution to precipitate platinum sulphide, which is treated with ammonium sulphide to form the stable solution.  The platinum sulphide precipitate, or the final catalyst before drying, may be washed with water or ammonium hydroxide to remove chlorine.  In place of ammonium sulphide, sulphides of amines may be used; specified amines are methylamine, dimethylamine, trimethylamine, ethylamines, propylamines, butylamines, n - hexylamine, 1 - methylheptylamine, cyclohexylamine, furfurylamine, benzylamine, aniline, xylidine, and pyridine.  Sulphides of N-substituted ammonium compounds, e.g. tetramethylammonium and benzyltrimethylammonium, are also suitable. The catalyst preferably contains 0.01-1 per cent by weight of platinum based on dry alumina and may be prepared in the form of lumps, granules, or powder, or may be formed into pills or pellets before calcining; before use it may be reduced with a hydrogen-containing gas.  A cracking component, e.g. silica, chlorine or fluorine, may be included in the catalyst; a fluorine content of 0.1-8 per cent by weight of alumina is preferred. Alumina hydrosol for use in the preparation of the catalyst may be prepared as described in Specification 552,053 by adding glacial acetic acid stepwise to a mixture of aluminium metal pellets and distilled water, with the addition of mercurio oxide after the first addition of acid to amalgamate the surface of the aluminium. The catalyst is useful in the hydroforming of naphthas and in other processes involving isomerization, hydrogenation, hydrocracking, dehydrogenation, oxidation, polymerization, and condensation.  Specification 657,565 also is referred to. p
Patent GB-546079-A (GB)
Title: A new or improved dart
IPC: F42B6/00
Filed: 1940-11-18
Abstract: 546,079. Darts. ALLAWAY, J. C. Nov. 18, 1940, No. 16630. [Class 132 (iii)] A plurality of body parts selected as to their weight to provide darts of varying weight and standard length are carried one behind another by a one-piece shaft extended beyond the body and shaped to a point while the other end carries the flight or a capping piece carrying the flight. The shaft of the dart is formed of a length of metal rod 1 tapering at one end to a point 2 and having a bore at the other end 3 to receive the ends of a split pin 11 holding a flight 7 of the shape shown. One limb of the split pin may be longer than the other to facilitate engagement in the bore 3. A sleeve 12 of lead surrounds the shaft 1 which may be roughened to afford a key, and with a capping piece 14 of synthetic resin and a rubber tube 15 forms the body of the dart. A sheet of the material known under the Registered Trade Mark of "Cellophane" may be interposed between the lead and the rubber. Further, the lead may be replaced by a front sleeve of lead and a rear of synthetic resin 16. In the modification shown in Fig. 5, the rod 1 is screwed into the capping member 14 wihich carries the bore 3 for receiving the split pin 11.
Patent GB-352667-A (GB)
Title: Improvements in or relating to thermostatically-controlled apparatus for heating water and other liquids
IPC: H05B1/02
Filed: 1930-05-30
Abstract: 352,667. Heating water and other liquids. WOODWARD, E. H. E., 5, Marden Avenue, Cullercoats, Northumberland, and CARNE, W. A., 6, Syon Street, Tynemouth. May 30, 1930, No. 16679. [Class 64 (i).] In a liquid heater A, Fig. 1, of large capacity from which the heated liquid is withdrawn at intervals, the electric or other heating element D is so controlled by a thermostat F<1> in the outlet pipe B that the heat is switched off when hot liquid is withdrawn and is switched on again only when the water in the outlet pipe, after an interval of time, falls below a certain temperature. The current of the heating element is also controlled by a switch operated by a thermostat F in the lower part of the heater. The outlet pipe B<1>, Fig. 3, extends through a sleeve H in the lower part of the heater and then upward again, and opens into a reserve tank A<2> above the heater. The hot water is drawn from the reserve tank through a pipe B<4>. The thermostat F<3> operating the switch F<2> is arranged in the part of the outlet pipe within the heater, and is thus influenced both by the temperature of the outflow and of the water at the bottom of the heater.
Patent GB-1393514-A (GB)
Title: Method of separating hydrocarbons
IPC: C07C7/152
Filed: 1973-04-06
Abstract: 1393514 Separating hydrocarbons by complex formation with a silver salt MITSUBISHI CHEMICAL INDUSTRIES Ltd 6 April 1973 [7 April 1972 8 June 1972 15 June 1972 27 June 1972 13 July 1972 2 Aug 1972] 16710/73 Heading C5E Hydrocarbon mixtures are separated into components by selective complex formation with a silver trihalogenomethane sulphonate CX 3 SO 3 Ag followed by decomposing the separated complex with water. Preferably the halogen atoms (X) are Cl and/or F. The hydrocarbons which may be in the gaseous or liquid state may be contacted with the silver salt as a solution or a solid, optionally supported on a porous support. Examples describe the separation of the following mixtures, the compound preferentially forming the complex being given first. p-xylene from a C 8  mixture or admixture with m-xylene; styrene from ethylbenzene or p-xylene or a C 8  mixture; α-methylstyrene from cumene; p-vinyltoluene from m-vinyltoluene; p-cumene from m-cumene; p-ethyltoluene from m-ethyltoluene; 1,2,3- and 1,2,4-trimethylbenzene from 1,3,5- trimethylbenzene; 1,2,4,5-tetramethylbenzene from 1,2,3,5- tetramethylbenzene; n-butylbenzene from sec- and tert-butylbenzene; 1-hexane from 2-hexane; 1,4-cyclohexadiene from cyclohexene and benzene; 1,3-pentadiene from 2-methyl-1,3-butadiene; #-methylnaphthalene from α-methylnaphalene; 2,6-dimethylnaphthalene from 1,6- and 2,3- dimethylnaphthalene; indene from indane. A phenol or amine polymerization inhibitor may be included when the hydrocarbons are highly polymerizable.