baber/WOPTO huggingface dataset:
Patent GB-795383-A (GB)
Title: Improvements in or relating to the production of alkali metal alkaryl sulfonates
IPC: C07C309/31
Filed: 1955-03-25
Abstract: Alkali metal alkaryl sulphonates, substantially free from inorganic sulphates and sulphites, are prepared by contacting a mixture comprising an alkali metal alkaryl sulphonate, inorganic sulphates and sulphites and organic solvent for said alkali metal alkaryl sulphonate, having a boiling point within the rage of about 25 DEG to about 250 DEG  C., with an aqueous alkali metal carbonate solution, allowing the mixture to separate into two layers, a non-aqueous layer comprising the organic solvent, the alkali metal alkaryl sulphonate and a minor amount of water, and an aqueous layer comprising water and inorganic salts, and separating the non-aqueous layer from the aqueous layer.  The process may be carried out by diluting the product from the sulphonation step with the organic solvent, neutralizing with an alkali metal hydroxide or carbonate, agitating the resultant mixture with aqueous alkali metal carbonate solution and after stratification, separating the liquid phases.  The dilution and neutralization steps may be reversed.  Specified solvents are methanol, ethanol, propanols, butanols, pentanols, ethylene glycol, propylene glycol, hexamethylene glycol, pentanes, hexanes, cyclohexane, benzene, toluene, octanes and petroleum naphtha.  The amount of solvent used is from about 0.6 to 5.0 parts by weight per part by weight of the sulphonation product.  The concentration of the aqueous alkali metal carbonate solution is between 5 and 30 per cent.  The amount of aqueous alkali metal carbonate solution used is from about 0.25 to about 3 parts by weight per part by weight of sulphonic acid.  The above figures are given for a sulphonation product containing 90 per cent of sulphonic acid. The process may take place at temperatures up to the boiling point of the solvent but temperatures from about 20 DEG  to 60 DEG  C. are preferred.  In examples the sulphonation products from alkyl benzenes are neutralized with aqueous sodium hydroxide solution before or after dilution with isopropanol, benzene, ethylene glycol or 1 : 6-hexamethylene glycol and washed with aqueous solutions of sodium or potassium carbonates.
Patent GB-414462-A (GB)
Title: A means for absorbing expansion in kiln dried tongued and grooved wood strip flooring
IPC: E04F15/04
Filed: 1933-03-25
Abstract: 414,462. Wood flooring. SHENTON, A. W., SHENTON, H. C., and MYERS, N. C., (trading as WACHAL FLOORING CO.), 28, Victoria Street, London. March 25, 1933, No. 9023. [Class 145 (ii).] A floor formed of tongued-and-grooved wood boards a is provided at intervals with an interposed board made in two parts e, e<1>, having the adjacent edges thereof inclined in the same direction so that one part e<1> of this board will ride up over the other part e in the event of excess pressure arising due to the absorption of moisture by the boards. The displaced portion e<1> of the board may either be replaced by a new portion or planed down to provide a flat floor surface. The adjacent edges of the board may either be straight and arranged as shown in Fig. 1, or curved as shown in Fig. 2.
Patent GB-904907-A (GB)
Title: Improvements in and relating to gun and like sights
Inventor: EDSTROM OLLE
IPC: F41G1/26
Filed: 1959-03-16
Abstract: 904,907. Sights. EDSTROMS SNICKERIFABRIK A.B., O. March 16, 1959, No. 9026/59. Class 119. A back sight for a rifle comprises a peep hole disc 1, Fig. 1, and a screen 3 arranged between the eye 5 and the disc 1 and having an aperture 4 which is larger than the peep hole 2. The screen 3 serves to mask deflected light rays 8 and reduce the blur of the image. The disc 1 and screen 3 are arranged at opposite ends of a tube 10, Fig. 3, which is carried by a vertically adjustable nut 11 for varying the range. The nut 11 is mounted on screws 12 rotatable within a housing 13 by a milled cap 17 having a toothed gear ring 16 engaging gears 15 on the screws 12. Fine adjustment of the range setting is obtained by a disc 19 having a gear rim 23 engaging the gears 15. Lateral adjustment of the housing 13 in dove-tail grooves 28 is obtained by a screw 26 rotatable on a fixed support plate 27 and engaging a a threaded bore 25 in the housing 13.
Patent GB-1359391-A (GB)
Title: Rotary shears for transversely dividing or chopping two webs  rods or bars of rolled material travelling side by side
IPC: B23D25/12
Filed: 1972-02-28
Abstract: 1359391 Rotary shears MOELLER & NEUMANN GmbH 28 Feb 1972 [26 Feb 1971] 9115/72 Heading B3W A shear for cutting two webs, rods or bars of rolled material travelling side-by-side comprises a first pair of rotary cutters 3 mounted on a pair of driving shafts 2 and a second pair of rotary cutters 5 mounted on a pair of hollow driving shafts 4 which respectively surround the driving shafts 2 of the first pair, the first and second pairs of cutters being selectively drivable simultaneously or singly. Drive motors 10 and 16 drive shafts 2 and 4 respectively through magnetic clutches 11 and 17 counter-rotating gears 6, 7 and 12, 13.
Patent GB-958054-A (GB)
Title: Method of recovering ammonia from coke-oven gases
IPC: C01B25/40
Filed: 1961-03-13
Abstract: <PICT:0958054/C1/1> A method of recovering NH3 from coke-oven gases comprises introducing the gases by pipe 10 to a primary cooler 11, and cooling with an ammonia-liquor spray, conducting the gases from the top of 11 by pipe 15 to the bottom of absorber 16 where the gases ascend countercurrent to a scrubbing solution of ammonia and phosphoric acid supplied to the top of the absorber by pipe 17, delivering the ammonia liquor issuing from the bottom of 11 to a still 13 for steam rectification, and conducting the enriched solution and the condensed vapours from the still 13, via vessel 20 and pipe 23 to a stripping column 24.  The acid contaminants e.g. H2S, HCN, CO2, and phenol, in the ammonia-water vapour emerging from the stripper 24 may be removed by washing the vapour with an aqueous solution of a strong alkali e.g. sodium, calcium, or magnesium hydroxide, also oils such as benzene, naphthalene, and pyridine may be removed by decanting.  The ammonia and phosphoric acid solution may be represented by the formula (NH4)nH3-nPO4; thus the solution just prior to stripping contains 40% salts of average composition (NH4)1.9H1.1 PO4.  The absorber may be a two- or three-stage spray tower and the stripping column may be a bubble-tray tower containing ten or more trays.ALSO:A method of recovering NH3 from coke-oven gases comprises introducing the gases by pipe 10 to a primary cooler 11, and cooling with an ammonia-liquor spray, conducting the gases from the top of 11 by pipe 15 to the bottom of absorber 16 where the gases ascend counter-current to a scrubbing solution of ammonia and phosphoric acid supplied to the top of the absorber by pipe 17, delivering the ammonia liquor issuing from the bottom of 11 to a still 13 for steam rectification, and conducting the enriched solution and the condensed vapours from the still 13, via vessel 20 and pipe 23 to a stripping column 24.  The acid contaminants, e.g. H2S, HCN, CO2, and phenol, in the ammonia-water vapour emerging from the stripper 24 may be removed by washing the vapour with an aqueous solution of a strong alkali, e.g. sodium, calcium, or magnesium hydroxide, also oils such as benzene, naphthalene, and pyridine may be removed by decanting.  The ammonia and phosphoric acid solution may be represented by the formula (NH4)nH3-nPO4; thus the solution jus prior to stripping contains 40% salts of average composition (NH4)1.9H1.1PO4. The absorber may be a two- or three-stage spray tower and the stripping column may be a bubble-tray tower containing ten or more trays.
Patent GB-357528-A (GB)
Title: Improvements in production of alkyl chlorides
IPC: C07C17/16
Filed: 1930-03-21
Abstract: Alkyl chlorides are obtained by bringing a vapour mixture consisting of one molecular proportion of an alcohol of not more than three carbon atoms and at least one molecular proportion of hydrogen chloride into contact with an aqueous solution of a metal chloride catalyst such as zinc chloride or ferric chloride, at a temperature high enough to effect the reaction and drive off continuously the water formed, so that the water content of the solution remains substantially constant and the solution maintains its liquid phase at ordinary temperatures.  The vapour mixture, preferably containing excess of hydrogen chloride, may be produced by heating dilute sulphuric acid with sodium chloride and alcohol. The vapours pass to a second reaction vessel containing the metal chloride solution, preferably maintained at a temperature of from about 110 to 150 DEG C.  The vapours leaving the second vessel are washed with water and concentrated sulphuric acid to free them from hydrogen chloride and ether, and are then condensed.  An example is given.
Patent GB-287907-A (GB)
Title: Improvements in pulley blocks
IPC: B66D3/10
Filed: 1928-03-26
Abstract: 287,907. Schat. A. P. March 29, 1927, [Convention date]. Pulley-blocks. - In braking means for pulleyblocks of the kind in which one or more pulleys are pressed by rotation of their shaft against a stationary part of the block, the eccentric part 13 of the shaft 14 on which the pulley rotates and by means of which it can be moved towards or away from the braking surface is slipped loosely on to a non-circular part 17 of the shaft. The regulating lever 15, 16 is mounted on the shaft in a similar manner. Non-rotatable loose collars 20 prevent the displacement of the shaft in the casing. Wing nuts 18 on the ends of the shaft keep the parts in position. The fixed end of the rope 22 is attached to the short arm of the lever.
Patent GB-604666-A (GB)
Title: Process for applying optical layers to glass
IPC: C23C14/58
Filed: 1944-05-13
Abstract: 604,666. Glass manufacture. KODAK, Ltd. May 13, 1944, No. 9216. Convention date, April 17, 1943. [Class 56] [Also in Groups II and XX] A glass surface is prepared, before coating in vacuo with an optical interference layer (see Group XX) or with a reflecting layer (see Group II), by subjecting it to a glow discharge of more than 25 milliamps. at a pressure between .05 and .5 mm. mercury; after establishment of the glow discharge the pressure is raised within these limits and the discharge is maintained for more than 5 mins., or for more than ¢ min. if the product of the intensity (milliamps.) and time (mins.) is not less than 125; without breaking the vacuum, the coating is then applied. After the glass elements 10 have been cleaned by processes which may include inspection in an intense specular light beam from a viewpoint at an angle to the beam to detect residual scum, they may be subjected to the glow discharge in a bell-jar 23 as shown, a high potential (of the order of 25,000 v.) being established between electrodes 27 and. 28 by a transformer 29. A resistance heater may be incorporated in the bell-jar to preheat the elements 10 immediately before or after the glow discharge treatment, as described in Specifications 604,665, 604,741 and 604,742. The Specification as open to inspection under Sect. 91 refers to the passage of mechanical vibrations (e.g. of ultrasonic frequency) through the glass in the vacuum immediately before coating. This subject-matter does not appear in the Specification as accepted.
Patent GB-942283-A (GB)
Title: Improvements in or relating to timber window and door frames
IPC: E06B1/60
Filed: 1961-03-14
Abstract: 942,283. Window &c. frames. INTERNATIONALE BOUW-SPECIALITEITEN N.V. March 14, 1961, No. 9234/61. Heading E1J. [Also in Division A4] The two parts of a mitred timber window or door frame joint are resiliently clamped together to retain the adjacent edges together when longitudinal stresses are present in the parts by a bolt 4 and nut 15, the bolt extending through the parts perpendicular to the joined edges 13, resilient washers 16 being placed below the nut to compensate for such stresses. A metal pin 17 which tapers towards its ends and which has a slot in each end, is forced into bores on either side of the edges 13 to compensate for transverse and complex stresses. The pin 17 may be replaced by spring washers or by a corrugated disc pressed after pre-stressing into edge-slots extending on either side of the edges 13.
Patent GB-578734-A (GB)
Title: Improvements in anti-friction bearings having fluid passages
IPC: F16C19/12
Filed: 1940-05-28
Abstract: 578,734. Bearings. BRAITHWAITE, R. C., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 28, 1940, No. 9375. [Class 12 (i)] A rotatable bush 9 with fluid inlet or outlet 11 is mounted by a ball-bearing 7 on a pin 1 with an axial passage 8 for the fluid, the bush having an axial hole 12 carrying a floating sleeve or tubes 13 accurately fitting the end surface of the pin. The end 5 of the pin 1 is spherical and the seat to the bush is also spherical for aligning. The tube 13 is a ground fit within the bush 9 and upon the end 5. The housing 14 has a rubber washer 26 and a spherical seating 20 ground to fit a spherical shoulder 19 on the pin 1, a spring 21 maintaining contact. Holes 4 in the pin are for equalising the fluid pressure. The lower end of the pin has a spherical bulge 24 seated in a liner 23. The housing is clamped in the supporting plate 18 by a nut 17 which also secures the liner in place. The bearing is used in mechanical relays of the fluid jet type.
Patent GB-973186-A (GB)
Title: Improvements in web winding and reeling apparatus
IPC: B65H18/20
Filed: 1962-03-12
Abstract: 973,186. Machinery guards. JAGENBERGWERKE A.G. March 12, 1962 [April 19, 1961], No. 9398/62. Heading F2J. [Also in Division B6] A double support roller web reeling device has a protective arrangement which hinders undesired outward movement of the paper reel from the support roll bed which comprises a frame formed by tubes 3, 4, 5 and webs 6 and 7 pivoted by levers 1 and 2 to the two side frames 10 of the machine. Limit switches 16 and 18 limit the upper and lower positions of the frame by closing a valve (not illustrated) which controls a pressure cylinder 13. Feeler members 19 are arranged at the lower end of the frame, which on encountering an obstacle operate a limit switch 20 which closes the valve, thus stopping the working stroke of the pressure cylinder. The fluid supplied to the cylinder 13 is so arranged that the frame cannot be moved up from the operating position above a definite rotary speed of the winding reel.
Patent GB-104619-A (GB)
Title: Improvement in Loom Pickers.
Inventor: KERSHAW BENJAMIN
IPC: D03D49/36
Filed: 1916-07-08
Abstract: 104,619. Kershaw, B. July 8, 1916. Pickers are made from blanks B, Fig. 2, of hide having a laterally-extending tongue D, which is folded in the side E, Figs. 3 and 4, of the picker remote from the side F against which the shuttle strikes. In making a left-hand picker, as shown, the sides of the blank B are folded about the lines b<2>, b<3>. The blank is then folded again longitudinally so that the faces of the previously folded edges come face to face. The picker is then shaped as usual. For right-hand pickers, the blanks are the reverse of those shown in Fig. 2, in which the hair side is uppermost; the portions C are waste.
Patent GB-139834-A (GB)
Title: Improvements in and relating to motor cycles and the like
IPC: B62M7/00
Filed: 1918-06-12
Abstract: 139,834. Bradshaw, G. E., and A.B.C. Motors, Ltd. June 12, 1918. Foot-rests.-In a motor-cycle having an engine with two horizontally opposed cylinders and a longitudinal crank-shaft, a shield arranged below the engine is extended on either side to form footrests 16, as shown in plan in Fig. 2, the front ends being turned up to protect the cylinders from mud &c.
Patent GB-564236-A (GB)
Title: Improvements in frequency-discriminating electric circuits
IPC: H03D3/26
Filed: 1943-06-16
Abstract: 564,236. Frequency modulation. GENERAL ELECTRIC CO., Ltd., and FOOT, J. B. L. June 16, 1943, No. 9661. [Class 40 (v)] A frequency discriminating electric network comprises a high-impedance valve 1 with a series circuit comprising condenser C and inductance L across its anode and cathode. This circuit is resonant at the mean frequency of oscillations applied to the grid of the valve 1. The extreme terminals of the circuit CL are connected to like electrodes of diodes D1, D2 or other rectifiers, and the junction of CL is connected to the other like electrodes. A resistance R is connected across the rectifiers, with its mid-point connected to the common electrodes of the rectifiers. Output control voltage proportional to frequency deviation is taken off across the resistance R through a smoothing circuit 8, 9.
Patent GB-369014-A (GB)
Title: Straw trusser
IPC: A01F15/00
Filed: 1931-03-31
Abstract: 369,014. Trussing straw. VOLKENBORN, W. and VOLKENBORN, H., (trading as VOLKENBORN, A.), Langenberg, Rhineland, Germany. March 31, 1931, No. 9736. Convention date, April 9, 1930. [Class 6 (iii).] A straw trussing device, shown in section in Fig. 1 and in elevation in Fig. 3, comprises pressing members b operated from the main drive shaft i by a gear g loosely mounted on the binder shaft h, and links e, f. The straw is pressed downwards over the lower arcuate part of the wall a against a tiltable trough member c until sufficient has been compressed to press a release lever l downwards against the action of a spring w. This releases a lever m and causes the binder shaft h to be clutched to the rotating gear g. The trussing needle r is thereby set in action and carries the twine round the truss into a binder s which ties it. The trough member c is also tilted into the open position by the action of the binder shaft so as to eject the truss, which may be taken away by a conveyer device. The size of the truss may be altered by changing the point of articulation of the links e, f, and the degree of compression may be regulated by adjusting the tension of the spring w. The device may be applied to binder-reapers. A guard grid may be arranged to prevent the operation of the machine except when it is in position.
Patent GB-1498587-A (GB)
Title: Structural element
IPC: B63B29/02
Filed: 1976-03-11
Abstract: 1498587 Panels AKERS MEK UERSTED AS 11 March 1976 [12 March 1975] 09770/76 Heading E1B [Also in Division B7] The adjacent edges of parallelepipedic hollow cabin or bulkhead panels A, B have complementary stepped configurations for overlapping engagement. Locking flaps 7 which are stamped out of the engaging surfaces 3" have a curved cross-section which is convex inwardlyof the panel and the openings 6 resulting from the stamping out of the flaps are longer than the flaps. The panels shown are built up from steel plates 2 and 3 and the interior 1' is filled with rock wool. For Figures see next column
Patent GB-161176-A (GB)
Title: Improvements in and relating to pumps
IPC: F04D1/14
Filed: 1921-04-02
Abstract: 161,176. Devienne, F. April 2, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Rotary-tube pumps.-Liquid is raised from the tank 4 to the closed tank 1 and taken through the pipe 11 under pressure, the raising being effected by a rotating tube 2 joining the two tanks. The lower end of the tube is contained in a fixed tube 10 and passes through a liquidtight guide 7. The upper end passes into the tank 1 through a tube 9 and the top carries a bent nozzle 3. The pipe 2 is filled in any suitable manner and is then rotated; the liquid is raised, and when the pressure in the tank 1 is sufficient, it passes through the compression tube 11. The tank 1 is provided with a level 13 and a pressure gauge 14, and the tube 2 has a flap valve 5 to prevent the liquid from running back.
Patent GB-1379459-A (GB)
Title: Thermostatic expansion valves
IPC: F25B41/06
Filed: 1972-03-02
Abstract: 1379459 Valves CONTROLS CO OF AMERICA 2 March 1972 [29 March 1971] 9812/72 Heading F2V A thermostatic expansion valve for use in refrigeration systems having means for rapid equalization of the pressure in the high and low pressure sides of the system comprises a body 10 provided with inlet port 12 and outlet port 14, a valve 16 biased by a spring 20 against a seat 18 and actuated through push-pins 56 and collar 28, 30 by a diaphragm 40 which has one side subject to pressure which is a function of evaporator outlet temperature and its other side subject to pressure in the valve outlet. The said means constitutes a by-pass valve which comprises ports 38 in a chamber 36 in the valve in communication with the inlet port which are controlled by the collar 28, 30 normally held closed by the diaphragm acting through the push pins 56. The by-pass valve is operated when the valve 16 abuts the seat 18 and the evaporator warms up after compressor shutdown sufficient for the pressures across the diaphragm to become balanced and the chamber pressure to open the ports. The pressure is transmitted to the diaphragm via a thermal-sensing bulb 50, and capillary tube 52. In an alternative embodiment the collar is dispensed with and the ports are closed by the push-pins which act as closure members. Other valve means, such as a ball, interposed between the push pin and the port, are suggested.
Patent GB-610358-A (GB)
Title: Load hook connection for a chain hoist
IPC: B66C1/34
Filed: 1946-03-29
Abstract: 610,358. Hoist chains. TRIGGS, W. W. (Yale & Towne Manufacturing Co.). March 29, 1946, No. 9868. [Class 78 (v)] In a chain hoist of the kind having a driving sprocket roller 10 and a roller load chain 11, the roller chain is connected to the hook 16 by chain links 18 which are flexible in two directions. Specification 563,939 is referred to.
Patent GB-308812-A (GB)
Title: Improvements in methods and apparatus for measuring the amplification ratio of electric amplifiers
IPC: H04B1/60
Filed: 1929-03-27
Abstract: 308,812. Telefonaktiebolaget L. M. Ericsson, (Assignees of Laurent, T.). March 28, 1928, [Convention date]. Amplification, measuring. - The amplification ratio of an amplifier A is measured by connecting the output terminals 2 through a damping- device D and a backcoupling transformer T to the input terminals 1 and ascertaining by means of a telephone H whether the amplifier is in a state of self-oscillation. A resonance shunt L, C is timed to the frequency at which the amplification ratio is to be measured and the artificial damping-device D is varied until the amplifier just ceases to oscillate, as determined by silence in the telephone H. The absolute value of the amplification is then equal to the absolute value of the damping. Alternatively the amplification may be adjustable by means of a potentiometer. The apparatus may also be used for measuring, damping connected in the circuit of the back-coupling device.
Patent GB-1221420-A (GB)
Title: Pipeline sphere or pig selector junction piece
Inventor: BROWN JOHN RUTTER HARRISON
IPC: F16L41/02
Filed: 1967-03-02
Abstract: 1,221,420. Selective connecting devices. SIMMONS & HAWKER Ltd. 10 May, 1968 [2 March, 1967], No. 9917/67. Heading F2G. A pipeline selective connecting device permitting the passage of spheres or pigs employs an arcuate tubular diverter 26 which may be rotated by an external handle or motor so as to connect passage 20 with either 16 or 18. If the outlets 16, 18, 20 are equally spaced, the diverter may be turned to interconnect any pair.