baber/WOPTO huggingface dataset:
Patent GB-527975-A (GB)
Title: An improved method of increasing the aromatic content of hydrocarbons
IPC: C07C15/00
Filed: 1939-04-15
Abstract: 527,975. Hydrocarbons. KELLOGG CO., M. W. April 15, 1939, No. 11484. Convention date, April 23, 1938. [Class 2 (iii)] The aromatic content of a mixture of hydrocarbons containing cyclo-olefins, naphthenes and aromatic hydrocarbons, such as is commonly obtained in a cracking process, is increased by subjecting the mixture to a dehydrogenation process followed by a mild hydrogenation to remove any residual olefins. The de-hydrogenation process is preferably carried out in the presence of a ring closing catalyst such as chromium oxide deposited on alumina. In an example a mixture of hydrocarbons obtained by burning a fuel gas with the theoretical amount of air and injecting a mid-continent gas oil into the combustion chamber was distilled and the 70 per cent overhead distillate collected. This was then de-hydrogenated by passing over a chromium oxide on alumina catalyst at 932‹ F. A subsequent hydrogenation process then removes any residual olefines.
Patent GB-1035467-A (GB)
Title: New anthraquinone dyes
Inventor: WEIDINGER HANS
IPC: C09B5/30
Filed: 1965-03-18
Abstract: The invention comprises dyes of the formula <FORM:1035467/C4-C5/1> where R is an aliphtic, aromatic, or heterocyclic radical.  The compounds are prepared by heating a 1,2-diamino-anthraquinone at 120-180 DEG  C. in a solvent with an acid of the formula R-COOH, or an acid halide or ortho ester thereof, or an aldehyde of the formula R-CHO, or an acetal thereof, or with R-CH(hal)2 or R-C(hal)3 where hal is a halogen atom.  The reaction may be carried out in the presence of a basic reacting substance.
Patent GB-623015-A (GB)
Title: Arrangement for regulating the power of electron discharge tube generators for thermal treatment
IPC: H05B6/04
Filed: 1946-04-15
Abstract: 623,015. Control systems for high-frequency apparatus. SOC. FRANCAISE RADIO ELECTRIQUE. April 15, 1946. No. 11548. Convention date, April 17, 1945. [Class 38 (iv)] [Also in Group XXXVII and XL (c)] The power output of a valve oscillator used in high-frequency heating is controlled by applying rectangular positive pulses to its grid to overcome a negative blocking bias, the pulses being of constant amplitude and repetition frequency, but of controllable duration. Sawtooth pulses are applied at C, D, Fig. 1, in series with an adjustable bias derived from a potentiometer 10 in the grid circuit of a valve 11 so that the anode current comprises triangular pulses of adjustable height. These are shaped to substantially rectangular form by saturated amplifiers and are fed through a transformer 12 to the grid circuit of a control valve 13, the cathode of which is connected through a bias source G to the grid of the highfrequency valve 9 to render the excitation intermittent in the rhythm of the pulses. The grid circuit of the valve 13 includes a diode valve 14 in shunt across the grid and filament, and a condenser-resistor combination 15, 16, with the object of restoring the D.C. component of the pulses lost in the transformer 12. The Specification as open to inspection under Sect. 91 comprises also an adjustable commutator switch, Fig. 1 (Cancelled), comprising a rotating shaft carrying a metal ring 3 engaging a stationary brush 4, and a half-cylindrical contact 2 engaging brushes 5, 6 and let into an insulating drum 1. The brushes 5, 6 are joined at B, and the brush 6 is adjustable through 180 degrees by an arm 7 and gearing 8. As the brush 6 is moved from position 6 to positions 6<SP>1</SP>, 6<SP>11</SP>, the closure period of the switch progressively rises from half of each revolution of the drum to continuous closure. The switch may be connected by its terminals A, B in the grid circuit of a valve oscillator. This subjectmatter does not appear in the Specification as accepted.
Patent GB-115681-A (GB)
IPC: H02K23/18
Abstract: 115,681. Stone & Co., J., and Darker, A. H. May 14, 1917. Switches, actuating, by reversal of rotary motion. In railway lighting systems in which the generator brushes are carried by a ring d, which rocks on reversal of rotation, to maintain polarity of the circuit constant, connexion to the circuit from the brushes is made through arms m, m<1> one of which carries a switching-disk n<1> which interchanges the batteries on each reversal of rotation. In a modification the switching-disk may be axially off-set from a contact disk carried on the arm m<1>.
Patent GB-399119-A (GB)
Title: Improvements relating to the manufacture of water gas
IPC: C10J1/213
Filed: 1933-04-20
Abstract: 399,119. Water-gas generation. HUMPHREYS & GLASGOW, Ltd. and GRIGGS, A. R., Humglas House, Carlisle Place, London. April 20, 1933, No. 11573. [Class 55 (i).] The fuel-supply shaft a of a water-gas generator is extended downwardly to form a chamber b through which the blow gases pass, and in which they are burned with air from a pipe h, so that the chamber and the surface of the fuel which forms its floor are heated. This preheated chamber serves either for preheating the steam from a pipe j during a down-run, or for cracking oils sprayed through an inlet g, the oil vapour being heated first in the chamber b, and then by passage through' the fuel previously heated in the shaft a by passage of water gas to the outlet l. During an up-run steam is supplied from an inlet f. Air for the blow is admitted through an inlet d, and an outlet e is for the down-run gas. Heavy oils are sprayed into the cracking chamber partly or wholly during a down-run, with steam superheated in the cracking chamber.
Patent GB-623264-A (GB)
Title: Process for the production of sulphur
IPC: C01B17/04
Filed: 1946-04-15
Abstract: Sulphur is produced by passing a stream of gas containing hydrogen sulphide and air or oxygen upwardly through a reaction chamber containing a bed of subdivided catalytic material, e.g. iron or other oxides, or natural mixtures of oxides such as bauxite, controlling the velocity of the gas stream to partially lift the catalyst particles and maintain them in a turbulent fluid state, while passing a heat-exchange medium in indirect heat-exchange relation with the catalyst to maintain the chamber at a temperature such that the sulphur formed is continuously volatilized, e.g. 700-1200 DEG  F., and removing reaction products containing vaporized sulphur from the reaction chamber and then recovering the sulphur.  In one embodiment, hydrogen sulphide from line 10 and air or oxygen from line 11 pass to reactor 13 containing catalyst 14, say, of particle <PICT:0623264/III/1> size 0-100m , supported on grid 15.  The catalyst may be either used alone or supported on a carrier, e.g. kieselguhr, diatomaceous earth, silica gel, or activated carbon, and cooling air passes through tube 16.  The reaction may be carried out at atmospheric or elevated pressures, e.g. 300 lbs. per sq. inch, and the air may be diluted with inert gas, e.g. spent combustion gas, steam, or the like.  Entrained catalyst is removed by cyclone separator 17 and returns to reactor 13 by tube 18, while product gases pass to condenser 20 maintained at 250-400 DEG  F., wherein sulphur condenses and the liquid passes to receiver 21; the sulphur may be redistilled.  In an alternative arrangement, a continuous stream of fluidized finely-divided catalyst is withdrawn from the reactor, passes through a cooler, and returns to the reactor to control the temperature.
Patent GB-577465-A (GB)
Title: Improved actuating means for the control valves of air locks, for example for the inlet and outlet hoppers of vacuumized drying chambers
IPC: F26B5/04
Filed: 1943-07-16
Abstract: 577,465. Drying apparatus for cereals &c. FORTER, M. July 16, 1943, Nos. 11584 and 11585. Convention dates, July 7, 1942 and June 22, 1943. [Class 34 (ii)] [Also in Group XXX] In a vacuum drier for the treatment of cereals &c. admission to the drier is controlled by a pair of valves 3, 4 which are located in a casing 1, provided with a feed hopper 29, and between them define an air-lock. The valve 4 is secured to an operating rod 9 and the valve 3 to a tubular member 7, the said valve 3 and member 7 being slidable upon the rod 9 with the interposition of packing 15 and the end of the member 7 and rod 9 being articulated respectively to the arms 16, 25 of bell-crank levers, the free arms 17, 26 of the latter being in spring-pressed engagement with cams 20, 28 mounted on a driving shaft 19. A third cam is provided on the shaft 19 for actuating, through a bell-crank lever 32, a closure member 30 of the feed hopper 29. The arrangement is such that rotation of the shaft 19 will open and close the valves 3, 4 and closure 30 in a predetermined sequence, namely, assuming the closure 30 to be open, first close the closure 30, then open and close the valve 3, open the closure 30 again, and finally open and close the valve 4. The treated cereals may be discharged from the drier through a similar airlock. In order to facilitate actuation of the valves 3, 4, means may be provided for equalising the pressure on both sides of the valves prior to opening and closing same, said means comprising a valve casing 34 which has atmospheric and vacuum conduits 41, 43 respectively controlled by spring-pressed valves 36, 37 and also a conduit 33 leading to the space between the valves 3, 4. The valves 36, 37 are in pin-and-slot connection with a twoarmed lever 50 mounted on a pin 51 which is rotatable by a lever 52 and rod 53 coupled to one arm of a bell-crank lever 54, the other arm of which has a roller 55 engaging a cam groove 56 on a disc 57 also mounted on the driving shaft 19, and said groove 56 being of such a form that, immediately prior to the opening of the valve 3, the valve 36 is opened to effect communication between the air-lock and atmospheric conduits 33, 40 and, upon closing of the valve 3, the valve 36 is closed and the valve 37 opened to connect the air-lock to the vacuum conduit 43.
Patent GB-1523036-A (GB)
Title: Plastics bags productions
IPC: B31B50/64
Filed: 1976-03-23
Abstract: 1523036 Making bags; seaming IMPERIAL CHEMICAL INDUSTRIES Ltd (Canadian Industries Ltd) 15 March 1977 [23 March 1976] 11632/76 Headings B5D and B5K A method of producing bags from a plastics web 1 comprises intermittently advancing the web 1 by increments of one bag length, folding- in side margins of the web to form overlapping panels and heat-sealing said overlapping panels together by forming two partially overlapping longitudinal seals 5, 6 for each bag, the seal 6 of each bag being formed simultaneously with the seal 5 of the adjacent following bag. This method permits the production of bags of different lengths merely by changing the amount by which the web is advanced during each incremental movement, with consequential variations of the amount of overlap of the seals 5, 6.
Patent GB-610859-A (GB)
Title: A process for the manufacture of an antibacterial substance
IPC: C07D493/04
Filed: 1946-04-17
Abstract: An isomer of patulin of empirical formula C7H6O4 and having the probable structure <FORM:0610859/IV(b)/1> or <FORM:0610859/IV(b)/2> is prepared by treating tetrahydro-g -pyrone in an inert solvent with an alkyl oxalate in the presence of a reagent suitable for effecting a Claisen reaction, e.g. an alkali metal or its alcoholate, and the alkali metal derivative of b  - alkoxalyl - tetrahydro - g  - pyrone so formed is treated with acid to liberate the free compound which is then heated with a solution of hydrogen halide in an inert solvent.
Patent GB-610883-A (GB)
Title: Improvements in gear wheel pumps or engines
IPC: F04C3/06
Filed: 1946-04-17
Abstract: 610,883. Gear pumps or engines. PILLARD, M. April 17, 1946, No. 11865. Convention date, Nov. 13, 1942. [Class 110 (ii)] A pump, which may be reversed to act as a motor, comprises meshing bevel wheels a<1>, a2 set at an angle as shown, fluid entering the spaces between pairs of teeth from the inner radius and being delivered from the outer radius first before the teeth meshing point. Inlet and delivery ports e<2>, d are provided. Both gear shafts may be driven and flexible drives may be used.
Patent GB-972275-A (GB)
Title: Improvements in or relating to spin-dryer tubs or drums and the manufacture thereof
IPC: B21D22/16
Filed: 1960-04-04
Abstract: 972,275. Making tubs; spinning. F. I. LEWIS, J. LEWIS, D. L. LEWIS, and C. RIDDING. April 4, 1961 [April 4, 1960], No. 11871/60. Headings B3A and B3J. A method for the production of a spin-dryer drum or tub comprises rotating a hollow cylindrical drum or cup-like workpiece of sheet metal, flow-forming the workpiece wall parallel to the axis of the rotating workpiece to reduce the wall thickness over at least part of its length to a thickness less than that of the workpiece base, then shaping the sheet metal workpiece by a spinning operation to the final shape required for the spin-dryer or tub. In an embodiment a flat circular sheet metal blank of e.g. aluminium is cupped to the configuration shown in Fig. 2 and holes 10 and 11 are pierced in the base the holes 10 being for the drainage of water from the tub and the hole 11 for securing a drive spindle to the hub when assembled in a spin-drying apparatus. The cupped blank is spun and the wall 6a elongated and tapered to the required dimensions by rollers or other tools in a flow-forming operation. Next the elongated and tapered blank is spun and shaped as in Fig. 5 to enable the blank to be fitted into the interior of a sectional internal spinning chuck as disclosed in Specification 972,276, whereby the blank is given its final shape. Further drainage holes 16 are punched in the wall of the blank after the open end of the blank has been trimmed, necked and beaded as at 15, Fig. 7. Finally, the tub is polished or anodized. In another embodiment the elongated and tapered blank 9a is placed on a former 17, Fig. 11, and spun to its final shape and then finished as in the first embodiment. In a further embodiment the reduced neck of the tub is produced by riveting or welding a flanged ring 20, Fig. 13, to the open end of the tub.
Patent GB-273439-A (GB)
Title: Improvements in rotary pumps
IPC: F04C2/46
Filed: 1926-05-07
Abstract: 273,439. Hay, W. G. May 7, 1926. Movable-abutment type; balancing moving parts; packing drums and abutments.-In a rotary pump of the type comprising an eccentric cylindrical piston 11 mounted on a shaft 8 concentric with the casing 1 and co-operating with a hinged abutment 4 having an actuating arm 16 which is positively rocked by means external to the casing, the abutment actuating arm 16 is operated by a connecting rod 10 attached to a crank pin 18, coaxial with the piston 11. on the shaft 8. The abutment 4 is formed with an arcuate lip 15 struck from a centre in line with the connection 17 of the actuating arm 16 to the connecting rod 19. The piston 11 is balanced by a weight 21 on the crank and the abutment 4 may be counterbalanced by connecting the arm 16 to a weighted lever suitably pivoted. Packing such as plumbago, asbestos, or reinforced rubber may be inserted in recesses 53 adjacent the abutment hub. Non-return valves 7 may be fitted in the inlet and delivery ports. The pump outlet may be through the abutment recess 3.
Patent GB-549036-A (GB)
Title: Improvements in electric primary batteries
IPC: H01M6/46
Filed: 1941-09-17
Abstract: 549,036. Batteries. GENERAL ELECTRIC CO., Ltd., and SANDERSON, R. W. W. Sept. 17, 1941, No. 11923. [Class 53] In a primary battery, of the type comprising fiat cells contained in a single casing and connected in series by contact of the anode and cathode of adjacent cells, the casing consists of a set of annular or framelike bodies 1, 2 having inclined walls so that they rest one within another, each individual cell being contained between the bottoms of adjacent frames. The cells shown are each formed by a zinc plate 3 coated on the underside with a conducting layer 7 (for example, of graphite with a binder, sprayed on) which protects the zinc from the electrolyte, an absorbent layer 4, for example paper, coated with cereal 41 containing electrolyte, and a layer 5 of a carbon and manganese dioxide mix. To prevent leakage of electrolyte from cell to cell, adhesive may be employed between the layer 7 and the bottom of the frame on which it rests. The frames may be of poly-ethylene or other suitable plastic.
Patent GB-940222-A (GB)
Title: Improvements in fluid control valves
Inventor: FLOYD TERENCE JOHN
IPC: F16K31/122
Filed: 1961-04-04
Abstract: 940,222. Valves. AUDCO Ltd. April 3, 1962 [April 4, 1961], No. 11938/61. Heading F2V. A hollow guide rod 12, Fig. 1, which extends through a valve seat 11 mounts a composite piston 13 around which is a cylinder 14 connected rigidly or by resilient means to an annular closure member 15 with a resilient seal 16; the cylinder 14 is moved to open or close the flow passage through the seat 11 by supplying pressure through passages 17, 18 in the rod 12 to either side of the piston 13. The cylinder is connected by a cable 19 to a position indicator. The piston 13 comprises an upper annulus 20 fixed to the rod 12 below and which are spring washers 21, and an externally tapered member 22 also fixed to the rod 12 and engaging a number of internally tapered segments 23 with external friction material 24 which is urged into contact with the cylinder 14 by the downward thrust of the washers 21. Below the parts 22, 23 is the lower piston portion 25 mounted for slight axial movement on the rod 12. The segments 23 are moved out of engagement with the cylinder by the portion 25 during unseating of the valve, and, due to the tapered surfaces, when pressure is supplied to the upper end of the cylinder to seat the valve. In a modification, the piston embodies upper and lower parts 29, 30, Fig. 2, both secured to the rod 12 and spaced by a sleeve 31; between the portions 29, 30 are balls 32 coacting with a cylinder step 42. An annular piston 34, which is mounted on the portion 29, carries four rods 35 that extend through a cam ring 36; upon raising the ring 36 the balls 32 enter a space below a tapered cam surface 8 on the ring. Each rod 35 has an abutment 37 in an aperture 38 in the lower portion 30. Springs 39 are disposed between the piston 34 and the cam ring 36. When pressure fluid is supplied to the upper end of the cylinder, the piston 34 is depressed, the rods 35 slide through the ring 36 since the latter is received by the balls 32, and the springs 39 are compressed. When the valve seats the springs 39 urge the ring 36 downwardly and the surface 8 forces the balls 32 into the step 42. When pressure fluid is supplied to the other end of the cylinder it also flows into an annular space 41 and raises the piston 34 and hence the ring 36 so that downward movement of the cylinder causes the step 42 to urge the balls inwardly. Steps 42 may be provided at other places in the cylinder so that the valve can be locked intermediate the open and closed positions. In a further modification, the rods 35, Fig. 4, extend through expanders 43 having a conical cam surface; a pair of arcuate members 45 is also provided each having a pair of abutments between which a number of balls are disposed. Each of the members 45 has a bevelled surface 47 that engages the expander 43 so that the members 45 move laterally as the expanders move vertically.
Patent GB-1173124-A (GB)
Title: Adjustable Clipper Head
IPC: B26B19/20
Filed: 1968-03-12
Abstract: 1,173,124. Hair clippers. WAHL CLIPPER CORP. 12 March, 1968 [29 March, 1967], No. 11954/68. Heading B4B. In a hair clipper 10, Fig. 1, having a body 11, a movable cutter blade 15 and a stationary comb blade 16, an adjustable clipper head for the blades comprises a generally rectangular frame member 25 secured to the end of the body 11, the side portions 30, 31, Fig. 7, of the member 25 having vertical and horizontal guiding and bearing surfaces which are engaged by corresponding surfaces on an irregular member 40 so that the latter is slidable forwardly and rearwardly within the member 25, the member 40 having the blade 16 mounted thereon to vary the length of cut hair, the ratio of the width of the member 40 to the length of its sides engaging the side portions of the member 25 being less than 2: 1, the member 40 being movable backwardly and forwardly by means of a lever 21. Actuation of the lever rotates a shaft 22, Fig. 7, which has a rib 65 received within a recess 66, Fig. 8, in the member 40. The member 40 has forwardly extending fingers 55, 56, Fig. 7, engaging recesses 57, 58 in the guiding and bearing surfaces of the side portions of the member 25 in the region below the cutter blade 15. The path of travel of the member 40 is limited by means of shoulders 72, 73 thereon engaging shoulders 70, 71 on the side portions of the member 25. The member 25 is formed of a resilient plastic and the member of metal.
Patent GB-1078384-A (GB)
Title: Surge suppression arrangements for line transmission system
IPC: H04B3/28
Filed: 1966-03-18
Abstract: 1,078,384. Surge suppression systems for signal-carrying lines. INTERNATIONAL STANDARD ELECTRIC CORPORATION. March 18, 1966 [March 25, 1965], No. 11976/66. Heading H4R. [Also in Division H2] To prevent the voltages induced in a signal carrying cable line (due to the presence of nearby power lines) from exceeding a desired value, e.g. 42 volts, each cable conductor is earthed at intermediate repeater stations H through ferro-resonant circuits C 1 , Dr 1  and C 2 , Dr 2  which are respectively tuned to 16<SP>2</SP>/ 3  and 50 cycles per sec., it being stated that there are no induced voltages at other frequencies. The ferro-resonant circuits are of the conventional voltage-responsive type, their impedance being high or low (relative to the resistance R of the cable conductor) according to whether the induced voltage is respectively below or above the desired value, and being so chosen that induced voltages above this value appear as voltage drop in the line resistance R and do not reach the repeaters H. The ferro-resonant circuits may comprise a single saturable choke having separate windings Dr 1 , Dr 2  for each frequency, each winding being connected between the line and earth through a respective capacitor C 1 , C 2 . The protective effect for a typical line section is described, Fig. 3 (not shown).
Patent GB-565147-A (GB)
Title: Improvements relating to mechanical means for propelling ships and boats
IPC: B63H1/32
Filed: 1943-08-16
Abstract: 565,147. Propelling ships &c. BARR, W. J. C. Aug. 16, 1943, No. 11991/42. [Class 114] A boat or ship is propelled by means of one or more rams 8 which reciprocate through the open ends of cylinders 5 and protrude through the hull 4, the protruding ends working in cylinder extensions 6 forming open guides outside the hull. The rams are disposed parallel to the longitudinal axis of the vessel, in horizontal or inclined planes, they may operate in series or successively, and they, or other independently driven rams, may be used for steering purposes. The extensions 6 may be fitted with a screen.
Patent GB-415530-A (GB)
Title: Change-speed gear mechanism
IPC: F16H63/30
Filed: 1933-04-25
Abstract: 415,530. Variable speed gearing; positive clutches. HUMBER, Ltd., WISHART, N. M., and HEYNES, W. M., Humber Works, Stoke, Coventry. April 25, 1933, No. 12049. [Class 80 (ii).] In a gear box embodying a dog clutch 13, 21 for bringing in one of the speeds, the slidable dog member 14 has splined thereon a friction synchronizing sleeve 17 which is urged towards its normal position, in which spring-loaded balls 18 carried by the member 14 engage an annular groove 19 in the sleeve, by springs 22. When the sleeve reaches its normal position, the springs 22, carried in the member 14, abut against shoulders 23 so as to be inoperative. As shown, the clutch is engaged to bring in second speed, the member 14 being integral with a gear 11 which is engageable with a gear 12 to bring in first speed.