baber/WOPTO huggingface dataset:
Patent GB-450531-A (GB)
Title: Improvements in or relating to furnaces or the like
IPC: F23C99/00
Filed: 1934-10-19
Abstract: 450,531. Mounting burners on furnaces. BRITISH HARTFORD - FAIRMONT SYNDICATE, Ltd., 142, Audrey House, Ely Place, London, and WARDLEY, T., 6, Rockware Avenue, Greenford, Middlesex. Oct. 19, 1934, No. 30012. [Class 75 (i)] [See also Group XII] A furnace is provided with a liquid or gaseous fuel burner which projects into an air port or passage in a direction transverse to the direction of flow of the air through the port so that the burner nozzle is located substantially in the middle of the air stream and which is movably mounted so that it may be moved into or out of the air port or passage. The invention is shown applied to a regenerative furnace having at each end a burner E adapted to extend into the port B when that port is supplying air and to be withdrawn vertically when the port is exhausting hot combustion products. The burner comprises an inner tube E<2> having a nozzle E<3> and connected with a fuel supply pipe by a flexible tube J and an outer tube E having a nozzle E<1> and connected with a primary air supply pipe L by a flexible tube K. Helical fins or webs M impart a whirling motion to the air. The burner is mounted on carriers vertically slidable in guides G and is attached by a cable to a counterweight H. If desired, each end of the furnace may be provided with a set of burners receiving fuel from separate pipes J<1> and primary air from a common pipe L.
Patent GB-300406-A (GB)
Abstract: 300,406. Ulrich W., and Deutsche Werke Kiel, Akt.-Ges. Dec. 9, 1927. Cylinders, ports and passages of, and baffles for guiding charge. - In two-stroke-cycle engine cylinders having pistoncontrolled superposed inlet and exhaust ports extending entirely round each cylinder, the streams of scavenging air enter the cylinder so that their combined stream passes up at an angle to the cylinder axis before it is deflected by the head to pass down to the exhaust ports. This is accomplished by providing (a) unsymmetrical inlet and exhaust passages as shown in Fig. 3 or (b) ports having unequal dimensions; a deflector on the piston face may also be provided.
Patent GB-663563-A (GB)
Title: Improvements in or relating to injection moulding copolymers
IPC: C08F220/44
Filed: 1948-11-19
Abstract: Terpolymers are made from a mixture containing 2 to 65 per cent of styrene, 15 to 80 per cent of alpha-methyl styrene and 12 to 60 per cent of acrylonitrile, by heating in aqueous emulsion with agitation at a temperature above 0 DEG  C. in the presence of a water-soluble peroxy-compound, such as sodium or potassium persulphate, sodium perborate, or hydrogen peroxide, and an emulsifying agent such as sodium lauryl sulphate, sulphonated hydrocarbons of high molecular weight, soaps prepared from animal and vegetable oils or rosin, triethanolamine, and alkyl aryl sodium sulphonates.  Buffer salts may also be included.  The catalyst solution may be added intermittently or continuously to the reaction mass, and it is preferred that the temperature and rate of monomer addition should be uniform.  The copolymer may be recovered from the reaction mixture by freezing, or by the addition of electrolytes or alcohols.
Patent GB-771993-A (GB)
Title: Treatment of organic acid mixtures by distillation
Inventor: MILLIDGE ALFRED FRANK
IPC: C07C51/44
Filed: 1953-10-31
Abstract: In the distillation of organic acid mixtures containing formic acid, particularly those obtained by the oxidation of organic compounds, corrosion of the stainless steel used in the distillation apparatus is reduced to a minimum by passing an oxygen containing gas though the mixture during the distillation. The organic acid mixtures generally comprises a mixture of formic, acetic, propionic and butyric acids containing less than 25 per cent formic acid e.g. mixtures obtained by the processes described in Specifications 743,989, 743,990 and 743,991 [Group IV(b)] and the distillation may be operated under the conditions described in Specification 771,992. The following test illustrates the effects of the presence of oxygen. Strips of stainless steel were placed in the kettle of a glass continuous still employed for topping a paraffinic hydrocarbon oxidate containing 20 per cent water, 4.5 per cent formic acid, 25.5 per cent C2 - C4 acids, 45 per cent neutrals, and 5 per cent higher acids.  In the first two periods of operation a slow steam of nitrogen was blown through the still and in the last periods the nitrogen was replaced by air.  Corrosion penetration for the four periods was 66.3, 76.8, 0.0, 0.0 inches x 10-3/year.
Patent GB-794167-A (GB)
Title: Improvements in and relating to magnetic door latches
IPC: E05C19/16
Filed: 1956-10-03
Abstract: 794,167. Releasable fastenings. GENERAL ELECTRIC CO. Oct. 3, 1956 [Oct. 4, 1955], No. 30137/56. Class 44 A magnetic door latch comprises a magnet 11 co-operating with main and auxiliary armatures to form a substantially closed flux-path with the main armature 12 when the door is closed and another substantially closed flux path with the auxiliary armature when the door is open. As shown, the magnet 11 is loosely housed in a non-magmetic housing 14 secured to a refrigerator door 4 which is held in the closed position by the attraction of the magnet to the armature 12 which is secured to the refrigerator cabinet'. In the open position of the door, the magnet is retracted into the housing 14 by a plurality of shims 24, 25 which constitute the auxiliary armature and also serve as means for adjusting the position of the housing relative to the armature 12.
Patent GB-722976-A (GB)
Title: Improvements in or relating to doors, gates and like closures
IPC: E06B9/02
Filed: 1952-11-28
Abstract: 722,976. Gates. COOPER, H. L., and ROSEVEAR; F. H. Sept. 2, 1953 [Nov. 28, 1952], No. 30183/52. Class 45. [Also in Group X] A gate for fixing across window or door frames to prevent children straying comprises two members 1, 2, coupled side by side to from a barrier and relatively movable laterally for widening or narrowing the width thereof, adjustable means for forcing the members 1, 2 outwardly with respect to one another and frame-engaging means 15 carried by the members. As shown the grille-like members. 1, 2, are in the same plane the member 1 having at its top and bottom edges two bars 3, 4 which are received in corresponding bores of the upper and lower cross members 5, 6, of the member 2. Link couplings 7, 8 are arranged at the top and bottom of the members 1, 2, each pair being pivoted to an end of an inner portion 9 or outer portion 10 of a strainer arm the former being slidable within the latter. A screw threaded sleeve 11 which is rotatable by handles 12 is carried by the screw threaded inner portion 9 and abuts against the outer portion 10, the adjacent ends of the sleeve 11 and portion 10 having a rectangular cross-section over which a similarly cross-sectioned clamp 13 may be positioned to prevent rotation. The frame engaging means 15 may be resilient contact pads or in a modification may positively engage with co-operating means of the fixed frame such as grooves or tenons. The members 1, 2 may be hollow plate-like members, solid plate-like members or wire netting and they may be arranged in adjacent parallel planes to allow them to overlap.
Patent GB-397698-A (GB)
Title: Improvements relating to portable lamps
IPC: F21L4/00
Filed: 1932-10-27
Abstract: 397,698. Reflectors. WALKEY, W. R., 66, Victoria Street, London. Oct. 27, 1932, No. 30195. [Class 75 (ii).] A portable lamp, for use in mines and for other purposes, is provided with a reflector 7, the surface of which comprises a central surface of revolution 14 around the source of light, smoothly merging into four curved surfaces 15 having a curvature decreasing towards their outer edges. The rear surface 14 is spherical. A hollow square extension 11 of the reflector fits on a square metal block 9 into which the lamp bulb 6 screws. The filament of the bulb 6 is arranged in the plane in which the surface 14 merges into the surfaces 15. A light-diffusing screen 13 of the type described in Specification 358,237 may be provided. Dimensions for the reflector are given.
Patent GB-521744-A (GB)
Title: Improvements in or relating to electric signal transmission systems
IPC: H04N5/52
Filed: 1938-10-19
Abstract: 521,744. Correcting television signals. COLLARD, J. Oct. 19, 1938, No. 30210. [Classes 40 (iii) and 40 (v)] Undesired variations of signal level of television and like signals are corrected at the receiving station by means dependent on the simultaneous observation of a plurality of successive datum portions or pairs of datum portions of the signal. For this purpose, delays may have to be provided in separate channels. Electrical delay networks may be used but it may then be necessary to correct for distortion and attenuation by means of equalizers and amplifiers. Or, a delay device allied to the electron camera may be used in which a beam lays down a signal over a circular track and a second beam picks up the signal after the required interval as described in Specification 471,913. In the simple system shown in Fig. 1, the signals fed in at 10, 11 pass through a delay device 12 which delays the signal for a time equal to the interval between successive datum portions, and switches 16, 17 are periodically closed at the same time interval, so that the circuit 15. 18, 21, 22 compares successive datum portions simultaneously with reference to the fixed voltage from a battery 19 to produce a corrected output at 13, 14. The switches 16, 17 may be replaced by valve circuits, for example such as described in Specification 512,109. In other systems, the whole signal is not delayed but successive datum portions are extracted and stored or delayed for simultaneous comparison in reference to a fixed voltage to produce a correcting bias. These devices may be used for overcoming changes in a long cable link or in a radio link, for which, reference is made to Specification 458,585. For automatic gain control, the difference between two levelsthe black level and the signal level-is observed and compared with the difference between a successive pair of these levels. Reference is also made to Specifications 422,906, 449,242, 464,828, 490,205 and 507,239 for various methods of re-establishing direct and low frequency components in television signals.
Patent GB-988268-A (GB)
Title: Improvements in the enzyme digestion of nucleic acids
IPC: C07H1/00
Filed: 1962-08-08
Abstract: Nucleic acids, e.g. RNA or DNA, are hydrolysed to form depolymerization products such as oligonucleotides, nucleotides or nucleosides by incubating said acids in an aqueous solution of an enzymic material comprising the aqueous extract of rootlets of a germinating seed.  At pH 8.5-9.5 particularly when the aqueous solution contains zinc ions 51-nucleotides are formed, which may be separated on a chloride anion exchange resin to yield adenylic, guanylic, cytidylic, uridylic, deoxyadenylic, deoxyguanylic, deoxycytidylic and thymidylic acid.  At pH 4.5-7.5 nucleosides are formed, which may be separated on a carbonate anion exchange resin to yield adenosine, guanosine, cytidine, uridine, deoxy adenosine, deoxyguanosine, thymidine, deoxycytidine and deoxyuridine.ALSO:An enzymic material capable of hydrolyzing nucleic acids is obtained by extracting the rootlets of a germinating seed with water. Typical seeds are oats, barley, wheat, corn, rye, rice, grass, bean, pea, melon, papaya, locust bean, sunflower or sesame. On treatment of RNA and DNA with this aqueous extract depolymerization occurs and nucleotides, particularly 51-nucleotides at pH 8.5-9.5 and nucleosides at pH 4.5-7.4, are formed.  The aqueous extract may contain zinc ions when used to obtain 51-nucleotides by hydrolysis.
Patent GB-1003994-A (GB)
Title: A miniature lamp
Inventor: FERNQUIST CYRIL LEE
IPC: H01R33/00
Filed: 1963-07-31
Abstract: 1,003,994. Lamp caps and holders. TRANSISTOR ELECTRONICS CORPORATION. July 31, 1963, No. 30441/63. Heading H2E. A miniature lamp-holder for use as an indicator light consists of a cylindrical housing 11, attached to panel 12, having a stepped-bore, the rear section of which has the larger diameter, and houses insulating sleeve 17, which in turn houses a cup-shaped conducting member 20, having a key-shaped hole 21, in its closed end, and internal screw-threads 22, near the open end. Terminal 23 engages the side portions of member 20, which acts as one terminal for the lamp, and post 31, which is resiliently urged towards the open end of member 20, by spring 33, is the second terminal. A lamp cover 34 has a light-transmitting cap 35, and a conducting externally-threaded portion 36, which sleeve screws into the cup-shaped member 20, and is in contact with the outside of cap 41, of miniature lamp 40, the other contact being from the central stud of the cap to the spring-loaded post 30.
Patent GB-856173-A (GB)
Title: Improvements in or relating to screwdrivers
IPC: B25B23/10
Filed: 1958-09-24
Abstract: 856,173. Screwdrivers. SWAYNE, S. G. Sept. 22, 1959 [Sept. 24, 1958], No. 30465/58. Class 61. A screwholding screwdriver com prises a tubular casing 1, a mair bit 2 displaceable axially but held against rotation and an auxiliary bit 4 located in an axial hole or groove in the main bit, the auxiliary bit being fast with a block through which extends a transverse pin 6 which engages in a helical slot 7 in the casing.The arrangement is such that inward displacement of the bit structure after engagement with a screw head, effects a partial rotation of the block and imparts a twist to the auxiliary bit until it jambs in the slot of the screw head. The bit 2 is slotted longitudinally for engagement by two balls 3 located in recesses in the casing. A spacer block or blocks 9 are disposed between the block carrying the pin 6 and the inner end of the bit 2. A compression spring 8 acting upon the block urges the bit to a forwardly projected position with its tip co-extensive with that of the main bit.
Patent GB-737276-A (GB)
Title: Improvements in and relating to mobile slewing cranes with jibs
IPC: B66C23/84
Filed: 1952-12-01
Abstract: 737,276. Mobile slewing cranes. HEITZ, G. Dec. 1, 1952 [Dec. 1, 1951], No. 30475/52. Class 78 (4). The pillar 5, Fig. 1, carrying the jib 27, 31 of a mobile pillar crane is universally mounted so that it may be adjusted to compensate for irregularities in the ground or to facilitate slewing in a preferred direction. In the embodiment of Figs. 1 and 2 the universal mounting 3, 4 is carried by a spider 2 secured to the longitudinals of a vehicle chassis and is apertured to pass the column 5 which is connected by a ball joint 7 at its lower end to a pair of blocks 9, 91 secured together and sliding vertically in a nut 10 which is traversed along a U-section guide rail by a screw 11 turned by a crank 15. The shaft of the screw 11 is journalled in blocks 12, 12<SP>1</SP> which are slid along guides 13, 13<SP>1</SP> when screws 16, 16<SP>1</SP> are rotated by a crank 20 and bevel gearing 21<SP>1</SP>, 22<SP>1</SP>, 21, 22. The column 5 may thus be adjusted to any desired inclination. Its inclination from the vertical is indicated by the position of a plumb bob 37 over an indicator 38. When the crane is in use bars 34, 34<SP>1</SP>, 35, 35<SP>1</SP> may be slid out of housings and supported at their ends by jacks. In the construction of Figs. 3 and 4 the inclination of the pillar 106 is adjusted by nuts 113, 114 engaging screws 115, 116 anchored to reinforcing bars 121, 122 above the driver's cab 102 of a vehicle. The nuts 113, 114 terminate in yokes 111, 112 by which they are pivoted to rings 107, 108 rotatably mounted on the pillar. The screws 115, 116 terminate in balls 117, 118 mounted in housings 119, 120 and restrained from movement about a vertical axis by tongues 119<SP>1</SP>, 120<SP>1</SP> which engage slots in the balls. The housings 119, 120 are pivoted about vertical axes. The tie 124 shown supporting the jib 123 may be secured to the upper end of the pillar 106 as shown or may pass down the interior of the column to a winch mounted below the universal joint 104, 105. In a further embodiment the adjustable links 113, 115 and 114, 116 are secured to a portion of the pillar 106 extending below the universal joint and may be replaced by hydraulic pistons and cylinders selectively controlled. The jib may be telescopic and supply pipes for effecting the variation in its length hydraulically may pass through the interior of the pillar 106. The ball joints 7, 9, 9<SP>1</SP> and 104, 105 may be replaced by gimbal mountings.
Patent GB-239759-A (GB)
Title: Improvements in or relating to safety devices for elevators, conveyors and like apparatus
IPC: B65G43/04
Filed: 1924-12-18
Abstract: 239,759. Teichmann, A. Dec. 18, 1924. Clutches, claw; operating clutches. -In endless belt conveyers or elevators when the belt stops and the driving drum continues to rotate projections on the belt disengage a coupling mounted within the driving drum and the drum stops, but its shaft continues to rotate. The hub 4, Fig. 2, of the drum 5 runs freely on a sleeve 2 secured to the driving shaft 1. A groove 11, Fig. 1, in the flange 3 of the sleeve is engaged by a tooth 12 on a lever 14, 15 pivoted at 13 to the centre wall 6 of the drum. The arm 14 is normally kept raised by a spring 16. An arm 17 pivoted at 18 to the wall 6 rests on the arm 15 and is connected by a link 20 to a lever 23 pivotally mounted on the hub 4. The end of the lever 23 projects into the path of the depending ends 9 of plates 10 which are placed between and attached by screws to the buckets and belts. When the belt and pulley run at the same speed, the projections 9 do not come into contact with the lever 23, but if the belt stops on account of the elevator becoming choked, the lever 23 is carried against a stationary projection 9 and is moved into the position shown in broken lines, thereby disengaging the coupling. The mechanism is duplicated on the other side of the drum. In a modification, Fig. 3, the lever 23<a> is connected by pin-and-slot mechanism fo an arm 14a formed with a tooth 12.
Patent GB-683349-A (GB)
Title: Improvements in or relating to pressure reducing valves, mainly for domestic heating appliances
IPC: G05D16/06
Filed: 1950-12-14
Abstract: 683,349. Pressure-regulating valves. WILLAME, G. Dec. 14, 1950 [Dec. 20, 1949], No. 30541/50. Class 135. A pressure reducing valve comprises a ball 19 obturating the inlet and actuated by a lever 20 from a diaphragm 3, the lever being pivoted at 23 on a wire ring surrounding a member 24 which carries the seat member 25 for the ball. The end of the lever abutting against the ball is shaped to the contour of the latter so that the ball will be moved positively in both opening and closing directions. At its other end, the lever is supported on a pin bridging a slot in a stem 22 depending from the diaphragm. The latter is loaded by a spring 15, the strength of which can be adjusted by means of a screw 11 acting on a cup-like abutment 12. The incoming gas passes through a filter 28 before encountering the ball valve 19, and the gas flows away through an outlet 29.
Patent GB-602991-A (GB)
Title: Friction holding device for adjustable screws
IPC: H01F17/04
Filed: 1945-11-15
Abstract: 602,991. Regulating electric inductances. BUTLER, T. A., and PYE. Ltd. Nov. 15, 1945, No. 30560. [Class 38 (ii)] [Also in Groups XXV and XL (c)] Small adjustable inductances have a core 4 carried by a screw 6 passing through a plain bore 7. A resilient split sleeve 8 frictionally engages the crests of the threads, has a lug 10 engaging a notch 12, a lug 11 engaging the shoulder at the other end of the bore, and an embossed helical rib 13 engaging the screw thread. The lug 10 may terminate in a soldering key 14.
Patent GB-1458159-A (GB)
Title: Processes for the recovery of polyphenylene ethers from solutions
IPC: C08G65/46
Filed: 1975-07-22
Abstract: 1458159 Recovering polyphenylene ethers GENERAL ELECTRIC CO 22 July 1975 [23 July 1974] 30629/75 Heading C3R Polyphenylene ethers are recovered from solution in an aromatic solvent by precipitating the polyphenylene ether by adding a non-solvent for the polymer, the non-solvent being a liquid which forms two separate phases when mixed with the aromatic solvent. The non-solvent may be a mixture of an alcohol or a ketone with water. In an Example a solution of poly(2,6 dimethyl-1,4-phenylene) ether in toluene is fed continuously into an agitated precipitation vessel, into which also is fed continuously a mixture of methanol and water capable of separating into two liquid phases with the toluene; a suspension of precipitated polymer overflows from the vessel and the polymer is separated by conventional means.
Patent GB-983899-A (GB)
Title: Splash guard for cookers
IPC: F24C15/36
Filed: 1960-09-07
Abstract: 983,899. Cooker splash guards. W. H. HUDSON. Sept. 7, 1961 [Sept. 7, 1960], No. 30842/60. Heading F4W. A cooker splash guard comprises a fan-like screen 2 collapsible into a channel casing 1 with sockets 4 by which the guard is located over hinge pins 5 on a bracket 6 with screws 8 clamping the guard to the back-plate of a cooker.
Patent GB-210887-A (GB)
Title: Improvements in oil burning systems
IPC: F23K5/02
Filed: 1922-11-11
Abstract: 210,887. Brettell, F. G., (Winslow Boiler & Engineering Co.). Nov. 11, 1922. Vapour burners; vaporizing-apparatus; oil supply and overflow fittings. - An oil fuel burner is supplied with oil from a vacuum tank 13 through pipes 15, 2 and with air by a blower 3 driven by an electric motor 10 which also drives a pump 11 connected by a pipe 12 with the suction chamber of the vacuum tank 13. The pump 11 produces the necessary vacuum in the tank 13 to draw oil from a main tank through a pipe 14 fitted with a check valve 16 and a strainer 17. The air tube 5 connecting the blower 3 to the burner is preferably formed with two branches delivering air to opposite sides of the fire-pot 1 in two lateral streams to mix with the fuel which is vaporized by falling from a nozzle 8 on to an inclined perforated plate 18 heated bv a pilot gas burner 19. If the burner fails to function the unburnt oil flows from a sump 21 at the bottom of the fire pot through an inclined drain pipe 22 to an overflow pan 23 suspended from one arm of a bell crank lever 24 pivoted on the blower base plate 4. The lever 24 is normally held in position by the engagement of its other arm 26 with a dog 27 on one end of a weighted lever 28 pivoted to the base plate 4. The other end of the lever 28 carries the movable element 31 of a push switch 32 in the motor circuit. When the pan 23 is partially filled the weight of the pan trips the arm 26 and allows the weight 30 to move the lever to open the switch 32 thereby stopping the motor 10 until the pan is emptied and the parts reset. The main switch S controlling the motor circuit may be operated by hand or by a thermostat. An electrically operated stop valve is arranged in the fuel line 15, 2 and is preferably controlled by the switch 32. The valve casing 33 encloses a cup-shaped block 36 formed with inlet and outlet ports 37, 38 and fitted with a screen 42 and a brass cover-plate 40. When the switch 32 is closed current is passed through leads 52 to energize an electromagnet 50 above the cover-plate 40 and thereby raise an armature 47 and its attached valve 45 to allow the passage of the fuel. The armature and valve fall by gravity when the switch 32 is opened. The fuel passage 44 is regulated by an adjustable needle valve 53. A plug 57 in the block 36 prevents the needle 53 from being tampered with. The upper part of the valve casing 33 is fitted with a perforated ventilating cap 35 and is connected to the air tube 5 by a pipe 34.
Patent GB-817888-A (GB)
Title: Metal arc working process and apparatus
IPC: B23K9/073
Filed: 1957-10-02
Abstract: 817,888. Arc welding systems. UNION CARBIDE CORPORATION. Oct. 2, 1957 [Oct. 9, 1956], No. 30898/57. Class 38 (4). Also in Group XXII] In arc welding or cutting using a consumable metal electrode 1 and a D.C. supply connected across the electrode 1 and the work 10, a condenser 12 in parallel with the supply 9 assists starting of the arc and supplies arc-stabilizing current surges.