baber/WOPTO huggingface dataset:
Patent GB-809382-A (GB)
Title: Dyeing of linear structures of polyacrylonitrile and its copolymers
IPC: C09B23/10
Filed: 1956-10-22
Abstract: Textile materials of polyacrylonitrile or copolymers containing acrylonitrile are spindyed with basic dyestuffs of the formula: <FORM:0809382/IV (a)/1> or <FORM:0809382/IV (a)/2> in which X and Y = divalent groups which with the nitrogen atoms make up 5- or 6-membered rings, R=an alkyl, cycloalkyl, aryl or aralkyl group and Z-=an anion of a medium strong to strong acid such as halogen hydracids, sulphuric and methylsulphuric acids, p-toluene sulphonic acid and perchloric acid.  Mixtures of the above dyes with diazacyanine may be employed.  The dyestuff is incorporated in a spinning solution of polyacrylonitrile in dimethylformamide.  The heterocyclic rings containing the radical X in the above formul  may be thiazole, selenazole, pyridine, pyrimidine or indolenine rings; the radical Y with the nitrogen atom forms an indole, carbazole or quinoline ring which is hydrogenated at the nitrogen atom.  All the rings may carry neutral substitutents and orthocondensed benzene or naphthalene rings, which may also be further substituted by neutral groups. Specification 616,385, [Group IV (c)], is referred to.ALSO:Textile materials of polyacrylonitrile or copolymers containing acrylonitrile are dyed with basic dyestuffs of the formula <FORM:0809382/IV (c)/1> or <FORM:0809382/IV (c)/2> in which X and Y=divalent groups which with the nitrogen atom make up 5- or 6-membered rings, R=an alkyl, cycloalkyl, aryl or aralkyl group and Z-=an anion of a medium strong to strong acid such as halogen hydracids, sulphuric and methylsulphuric acids, p-toluene sulphonic acid and perchloric acid.  Mixtures of the above dyes with diazacyanine may be employed.  Dyeing may be effected in acid, neutral or weakly alkaline baths or, if desired, spin dyeing may be effected by incorporating the dyestuff in a spinning solution of polyacrylonitrile in dimethylformamide.  The heterocyclic rings containing the radical X in the above formul  may be thiazole, selenazole, pyridine, pyrimidine or indolenine rings; the radical Y with the nitrogen atom forms an indole, carbazole or quinoline ring which is hydrogenated at the nitrogen atom.  All the rings may carry neutral substituents and ortho-condensed benzene or naphthalene rings, which may also be further substituted by neutral groups.  The dyestuffs may be prepared by condensing aldehydes of the formula <FORM:0809382/IV (c)/3> with secondary amines of the formula <FORM:0809382/IV (c)/4> or by condensing methylene compounds of the formula <FORM:0809382/IV (c)/5> or their salts with formyl compounds of the formula <FORM:0809382/IV (c)/6> or with heterocyclic imines of the formula <FORM:0809382/IV (c)/7> in the presence of formylating agents such as formylamides. Specification 616,385 is referred to.
Patent GB-460468-A (GB)
Title: Improvements relating to sliding bolts
IPC: E05C1/06
Filed: 1935-11-20
Abstract: 460,468. Sliding bolts. ASH, T. Nov. 20, 1935, No. 32122. [Class 44] A sliding bolt a capable of rocking movement in the guide aperture e as it slides therethrough in moving from retracted to shot position, or vice versa, is biassed towards the front attachment plate d by a wire spring having a loop l embracing the bolt. As shown, the spring has coils mounted on a pin m, the limb l bearing on the bolt and the other limb bearing on plate d being inclined at an obtuse angle, but a modification is described in which the limbs are arrayed at an acute angle. The bolt is operated by a lever f, pivoted at g in a recess h so as normally to lie flush with the face of plate d. The spring retains the bolt in its extreme positions, the lever f bearing, in the retracted position, against the inclined face of the part b of the bolt, and in the shot position against a curved plate i. Recess h has enlargements j, k at its ends to give ready access to the end of lever f.
Patent GB-931361-A (GB)
Title: Improvements in photographic processing apparatus
Inventor: FITCH STANLEY GEORGE
IPC: G03D3/13
Filed: 1959-09-21
Abstract: 931,361. Photographic processing apparatus. NEWMAN & GUARDIA Ltd. Dec. 21, 1960 [Sept. 21, 1959], No. 32142/59. Class 98 (1). A photographic processing-apparatus comprises a series of rectangular tanks within a housing, guide spools within the tanks such that they can move freely vertically but are constrained by the longer sides of the tanks from rotating horizontally, a drive shaft extending across and above the open ends of the tanks, the latter being inclined at an angle relative to the shaft, and driving pulleys spaced along the shaft, the disposition being such that the film takes a helical path successively through the tanks. In the form shown, a number of rectangular tanks 13 are supported vertically in a housing 1, and inclined at an angle to the drive shaft 37 running above them. Near the bottom of each tank is a flanged film spool 19 which is freely rotatable about a horizontal axis, but is constrained by the sides of the tank from rotating about a vertical axis. On the shaft 37 are fixed a series of sprocket pulleys 39. The pulleys 39 and spools 19 are so disposed that a length of film can pass over one pulley 39, and then, from the point where it leaves the pulley, travels vertically downwards through the tank until it makes contact with the spool 19 therein. After passing round under the spool, it travels vertically upwards until it makes contact with the next pulley 39, and passes over this pulley to enter the next tank, and so on. Thus, on each vertical part of its travel, the film is twisted through 45 degrees, and it traverses the sequence of tanks in a helical path. The tanks may contain liquids for the various processing stages, such as developing, fixing, washing, &c., or may act as drying chambers. The upper part of the housing may be closed by a lid, to render it light-tight. The invention may comprise a single row of such tanks, although, Fig. 5, shows a double row, intended for use with reversal film, with a re-exposure unit 160 between the two rows. The film is fed into the apparatus from a light-tight magazine 71, and after leaving the apparatus is wound on to a take-up spool on a shaft 103. This is coupled by a spring belt 106, which acts as a slipping drive, to the shaft 37, so that the take-up spool winds on film at a constant rate.
Patent GB-193955-A (GB)
Title: Improvements in, and relating to, motor spirit
IPC: C10L1/04
Filed: 1921-12-01
Abstract: Motor spirit is obtained from the liquid deposited in the cylinders in which purified oil-gas is stored at 150 lbs. per sq. in. pressure, by subjecting any fraction distilling between 60 DEG  C. and 140 DEG C., or the crude oil freed from gas, to reflux distillation with anhydrous chloride of aluminium or other metal as in the parent Specification; or by similarly treating the crude or gas-free oil or the fractions specified with the metal chloride and chlorine; and afterwards collecting the 70-140 DEG  fraction, and washing it with soda or caustic soda solution and with water. Dissolved oil-gas driven off before or during the treatment with metal chloride is purified by passage through alkali hydroxide solution and slaked lime, and is used for heating or lighting or for enriching coal-gas. Preferably, the liquid is first heated with aluminium chloride for about 2 hours, and the chlorine is then passed into the liquid in the still for about 1 1/2 hours.  Otherwise the process and apparatus are identical with those described in the parent Specification.
Patent GB-831502-A (GB)
Title: Improvements in or relating to radio and like transmitter constructions
Inventor: ZURAN JOSEPH
IPC: H04B1/03
Filed: 1956-10-22
Abstract: 831,502. Resonant lines. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. July 11, 1957 [Oct. 22, 1956], No. 32173/56. Class 40(8). [Also in Groups XXXVI and XL (c)] A valve amplifier stage in a screening compartment is tuned by unbalanced resonant lines consisting of a strip or plate-like metal member and an adjacent wall in the compartment. As described, the invention is embodied in an amplifier circuit (Fig. 1) comprising a seriestuned input circuit L7C4 for a valve V1 which has a quarter-wave anode tuning line coupled through a variable capacitor C1 to a second stage V2. The output of this stage is applied to a double-tuned circuit comprising a quarterwave line L11 coupled by a capacitor C12 to a three-quarter-wave line L12. This latter line constitutes the tuned input circuit of a grounded grid stage V3, the output of which comprises a half-wavelength line L13 coupled by a capacitor C15 to a second tuned line L14 connected to a matching section MS and an output line F. Figs. 2 and 3 show the construction of the amplifier. The input line L15 consists of a conducting strip spaced from a wall of a metallic enclosure E and tuned by a variable capacitive element C8. A capacitor C1 (Fig. 2) couples the line to the grid of valve V2. The quarter-wave tuned anode line of this valve comprises a strip L11 spaced from a wall of the structure and comprising two parts separated by a dielectric spacer (described below) to form a blocking capacitor C16. The line is tuned by a plunger SB2 and H.T. is fed to the valve by a line secured to the outer surface of the strip L11. An adjustable capacitive probe C12 (Fig. 3) couples this line to a similar line L12 formed in conjunction with the opposite side of the wall and connected to the cathode of valve V2. The heating current for the cathode is fed through two strips CC laid on the outer surface of the conductive strip L12. A further plunger SB3 tunes this line. The output line of this valve comprises the strip L 13 and a further strip L 16 which is adjustable to vary the tuning of the line. The output from this line is derived by an adjustable capacitive element C15 connected to a tuned line L14 and a matching section MS. Ducts are provided for allowing air to circuit around the valve. The blocking capacitor C16 is shown in Fig. 5. Slots are provided in the member L11 which are more widely spaced towards the edges of the member so that the current that flows in the edges of the capacitor is equalized with that flowing in the middle.
Patent GB-1003784-A (GB)
Title: Basically substituted derivatives of halogeno-4-azaphenthiazines
IPC: C07D513/04
Filed: 1961-09-07
Abstract: In a process for the preparation of compounds of the general formula <FORM:1003784/C2/1> which are substituted in the 7- and/or 2-position by halogen atoms and their acid addition salts, wherein R is a hydrogen atom or a group Alk-N-R1R2 in which Alk is a straight or branched chain alkylene group having 2 to 4 carbon atoms and R1 and R2 which may be the same or different are alkyl radicals which may, together or with the group Alk be closed to form a ring which may contain another hetero atom which may in turn be substituted by an alkyl, benzyl or hydroxy-alkyl group, an appropriate 10-R-azaphenothiazine is treated with an oxidising agent to oxidise the sulphur atom to the sulphoxide group and the resulting sulphoxide is halogenated with a hydrogen halide. Suitable oxidising agents are hydrogen peroxide or potassium bromate.  Specification 840,892 is referred to.
Patent GB-1299891-A (GB)
Title: Improvements in or relating to distillation
Inventor: NEWSON IVAN HENRY
IPC: B01D3/06
Filed: 1969-06-26
Abstract: 1299891 Multiple-effect evaporators; desalination of water UNITED KINGDOM ATOMIC ENERGY AUTHORITY 22 June 1970 [26 June 1969] 32219/69 Heading B1B In a multiple-effect evaporator wherein the effects are arranged in superposition and each effect comprises vertical tubes 48 through which the boiling liquid, e.g. brine, rises due to pressure-drop from one effect to the next, nucleation means are provided at the inlet ends of the tubes for promoting homogeneous mixing of liquid and vapour in the tubes. A mixture of brine and steam enters disengaging' enclosure 41 from the previous effect and, after separation, the brine forms a pool 70 from which brine is drawn up through flared risers 71 and 74 where flash evaporation occurs. A pool of brine forms on wall 76 and a homogeneous mixture of brine and steam flows up through vertical tubes 48 which are externally heated by steam which has passed through demister 79 from enclosure 41. Fig. 5 shows a wire grid G which is the preferred form of nucleation device used at the mouth of the lower ends of tubes 48. Tubes 48 may be provided with horizontal or vertical flues or ribs. The condensate, i.e. fresh water, formed on the outside of tubes 48 flows through pipe 50 to heat-exchanger 81 which is also supplied through pipe 82 with condensate from the previous effects. From heatexchanger 81, the condensate flows to heatexchangers 84 and 86; and is then removed from the system through pipe 56. Steam generated in risers 71 and 74 flows through pipes 73 and 77 to heat-exchangers 84 and 86 respectively. Heat-exchangers 86, 84, 81 are employed for preheating the brine which is supplied to the system through pipe 59. The multiple-effect evaporator may be associated with a multi-stage horizontal flash distillation plant (Fig. 4, not shown); and the feed brine is then passed through the condenser tubes of the flash distillation plant before it enters the heat-exchangers and first effect of the multiple-effect evaporator, while the concentrated brine leaving the uppermost effect is introduced into the first flash chamber of the flash distillation plant.
Patent GB-904562-A (GB)
Title: Improvements in or relating to devices for sharpening knives and the like
IPC: B24B3/54
Filed: 1958-10-09
Abstract: 904,562. Sharpening edge tools. HIGGINBOTTOM, A. E. A., and DE HAYES, E. Oct. 9, 1959 [Oct. 9, 1958], No. 32280/58. Class 60. A sharpener for knives and other edge tools comprises a rotary power-driven sharpening stone mounted above a water bath formed by two interconnected annular chambers, a rotary impeller driven by the driving of the stone and working within one chamber to expel water from the bath, a conduit leading from this chamber to receive water expelled by the impeller and to discharge this water on to the face of the stone and means for ensuring that this water drains back into the other annular chamber.  A sharpening stone 4 is secured to the shaft 3 of a motor 1 and is partly enclosed by a cover 9 mounted for rotation within a ring 10 supported by a mounting 11 fixed to a casing 2 and enabling the cover 9 to be lowered to compensate for wear on the stone. The cover comprises a wall 12 and a top fin having two segmented parts 13, 14 at different angles to the horizontal and separated by a circular table 15. The upper part of the casing 2 encloses a water-bath divided into outer and inner troughs 19, 20 by a wall 21, the troughs communicating through holes 22 in the wall 21. An impeller 23 secured to the shaft 3 rotates in the trough 20, expelling water through a port 26 and sleeve 27 connected by flexible tubing to a rigid tube 28 held by a clamp 29 mounted on the wall 21. The tube 28 may be swivelled in the clamp so that its mouth 31 lies directly above one or other of holes 30 in the parts 13, 14. The water returns to the trough 19 in which most of the particles settle.
Patent GB-267247-A (GB)
Title: Improvements in and relating to safety razors
IPC: B26B21/10
Filed: 1925-12-22
Abstract: 267,247. Bleloch, W. E. Dec. 22, 1925. Razors.- Relates to detail improvements in a holder for safety razor blades, for shaving and stropping, of the kind described in Specification 250,624. The support 1 is without longitudinal recesses adjacent to the cutting edges of the blade 2, and is curved transversely. The sides of the slots 3 between the guard teeth are inclined so that the teeth are of inverted V-section. The end of member 1 has a recess 8 ending in an upturned tongue 11, engaging one of the holes 13 in the blade. The other hole 13 is engaged by a hooked catch 21 projecting through a slot and formed on the end of a rod 25 urged to the right into engagement by a spring 20 disposed between a loose collar 28 bearing against a bifurcated abutment bent down from member 1, and an operating button 24 secured to the rod, the stem of the button passing through a slot in member 1. The hooked catch has an acute angle, and overlaps the edges of the slot, being bevelled off in opposite direction, the edges of the slot being also bevelled. This construction is stated to avoid splitting the blade. The outer ends of the holes 13 in the blade may end in U- or V-form slots cooperating with the catches. A transversely arched shield plate 10 has a hooked outer end engaging in and centred by the shouldered recess 8, the hook engaging under member 1. The other end of the shield plate has a spring tongue passed down through a slot 16 in member 1. This tongue has a ridge 31 bearing against the underside of member 1, and its free end 18 bears with pressure against the catch rod 25, so that the shield is pressed against the blade, ridge 31 acting as a fulcrum.
Patent GB-366118-A (GB)
Title: Improvements in or relating to oil seals and/or dust guards for journal boxes
IPC: B61F15/22
Filed: 1930-10-28
Abstract: 366,118. Axle-box sealing devices. PENNIMAN, W. B. D., 341, St. Paul Place, Baltimore, U.S.A. Oct. 28, 1930, No. 32344. [Class 12 (i).] An axle-box shield consists of leather members 21, 23 clamped between two metallic plates 11, 13 and located in the dust chamber 2. The member 21, which has a bore slightly less than the axle diameter, closely embraces the axle, and the protruding edge of the member 23 is pressed tightly against the inner wall of the dust chamber and holds the shield in position. The member 23 is of U-shape and the dust chamber is closed at the top by a wood block 6. A coil spring may be placed around the member 21 to press it against the axle. The members 21, 23 may be in one piece.
Patent GB-908055-A (GB)
Title: An improved goal construction for use when playing basketball or the like
IPC: A63B71/02
Filed: 1957-10-17
Abstract: 908,055. Outdoor games. ATHLETIC EQUIPMENT CO. Ltd., and HOWARD, G. H. Jan. 19, 1959 [Oct. 17, 1957], No. 32472/57. Class 132 (2). The back sighting board 5 and goal ring 6 for basket-ball and like games is mounted on a stand 1, 3 as by parallel links 7 so that it is vertically adjustable, the board 5 being vertical in any adjusted position. As shown, the board is set in adjusted position by a bar 8 pivoted thereto at 9 and having a series of holes 10 receiving a pin on the uprights of the stand. The uprights may be tubular and contain counterweights for the board.
Patent GB-743316-A (GB)
Title: Storing wheel for parking vehicles
IPC: E04H6/16
Filed: 1953-11-24
Abstract: 743,316. Garages. KUNZE, W. Nov. 24, 1953 [Nov. 26, 1952], No. 32576/53. Class 20(1). [Also in Group XXX] A storing wheel for parking vehicles has its axis horizontal and supported high enough above the ground to allow vehicles to pass beneath the lowermost of a plurality of cars 9 pivotally connected to its circumference and adapted to contain one or more vehicles. The wheel is carried by posts, as 1, 2, 4, and is driven by an electric motor 25. A lifting device having a turn table may raise a vehicle to the lowest car 9, or the floor of each car may be vertically movable, e.g. by the motor 25, means being provided to ensure that a car can only be so operated when in the lowest position. Automatic electrical means may stop the wheel when an empty car reaches the lowest position. Each car 9 may comprise a framework having a roof 28.
Patent GB-1515177-A (GB)
Title: Optoelectronic focus detection system
IPC: G02B7/32
Filed: 1975-08-05
Abstract: 1515177 Auto-focussing in optical record/ playback apparatus PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES LTD 5 Aug 1975 [8 Aug 1974] 32696/75 Heading G5R [Also in Division G1] A system for determining deviations of a record body from a desired plane uses a light beam reflected off the body to a pair of detectors which are equally illuminated when the position is correct; to enable the system to detect large deviations yet maintain a high sensitivity when the deviations are small, the reflected beam is directed onto the detectors by a lens element which converges only such light as strikes its outer region. This element effectively makes the system response non-linear, the sensitivity being a maximum for small deviations. Fig. 1 shows a readout system for an optical record 11, in which a laser 1 produces a readout beam on a measuring beam 7. The latter is reflected to detectors 19, 20 as shown, and as described in Specification 1,435,922. If record 11 is not in the correct plane the reflected beam may miss the detectors altogether, e.g. To overcome this a lens 30, Fig. 4, is provided in front of the detectors, to converge beams 7e, 7f which would otherwise miss the detectors. To avoid reducing the sensitivity for beams which would normally have struck the detectors, the central portion 31 of the lens is ground flat, or an annular lens is used. The system may also be used to determine position when a recording is made, a separate laser source being used for the measuring beam in conjunction with polarizing and frequency selective elements to maintain the writing and measuring beams separate, Fig. 9 (not shown).
Patent GB-1080717-A (GB)
Title: Purification of crude organic polyisocyanates
Inventor: BIRCHER BRIAN JOHN
IPC: C08G18/70
Filed: 1965-07-30
Abstract: Crude organic polyisocyanates (e.g. 2,4- or 2,6-tolylenediisocyanate or a mixture containing them) having a b.p. above 200 DEG  C., are purified by heating at 180-220 DEG  C. for 0.5-30 minutes, followed by removal of dissolved Cl-containing gases.  The process is optionally effected in presence of up to 15% of solvent.
Patent GB-208360-A (GB)
Title: Improvements in domestic washing, wringing and mangling machines
IPC: D06F39/12
Filed: 1922-11-30
Abstract: 208,360. Entwisle & Kenyon, Ltd., Kenyon, W. H., and Kenyon, M. S. Nov. 30, 1922. Washing-machines.-Machines of the kind comprising a rectangular wood frame A supporting a wringer at one end are provided on the two legs B below the wringer with brackets C carrying castors or runners D, which are normally above the level of the floor, so that the machine is rigid, but are brought into contact with the floor, as shown in Fig. 3, when the machine is tilted by lifting the end remote from the wringer. A cross-bar a may be fitted to this end to serve as a handle. The brackets C are open-sided and are secured by screws &c.
Patent GB-1022952-A (GB)
Title: Jet propulsion gas turbine engines
Inventor: MORDELL DONALD LOUIS
IPC: F02C7/08
Filed: 1961-09-12
Abstract: 1,022,952. Controlling aircraft. BRISTOL SIDDELEY ENGINES Ltd. Sept. 7, 1962 [Sept. 12, 1961], No. 32721/61. Heading B7G. [Also in Division F1] In a jet propulsion gas turbine engine (see Division F1) for speeds in excess of Mach 4, coolant, such as hydrogen, methane, carbon dioxide or water is heated in a heat-exchanger 42 at high speeds, say above Mach 2.5, by the incoming air. The resulting vapour flows through conduits 55, 56 to an auxiliary nozzle 36 located adjacent the main nozzle and provided with an axially adjustable centre body 37. One or more such nozzles may exist at the wing tips, nose and tail of an aircraft for directional control.