baber/WOPTO huggingface dataset:
Patent GB-834563-A (GB)
Title: Epoxide resins and a process for the manufacture thereof
IPC: C08G59/22
Filed: 1956-05-15
Abstract: Epoxy resins, suitable for use as adhesives, coating compositions, glass interlayers and for impregnating porous fibrous materials, e.g. glass fibres or for admixture with fillers, e.g. graphite or silica to give moulded articles, are obtained by heating diglycidyl ether with anhydrides of dibasic p  acids, e.g. phthalic, tetrahydrophthalic, endomethylene tetrahydrophthalic, maleic or succinic.  The polymers formed are stated to differ in the free linkages available according to the proportions in which the reactants are used.  With 1 mol. anhydride to (a) 2 moles. ether, linear structure having free CH2- and O- bonds are obtained; (b) to 1 mol. ether, the free linkages are of the CH2-, O-, COO- and CO- types. The reaction may be carried out in presence of catalysts, e.g. triethanolamine, metal alcoholates, amides, urethanes and particularly oxazolidone substituted on the N atom, e.g. hydroxy ethyl oxazolidone, phthalamide, succimide, ethylene glycol carbamate and its chlorinated derivatives, or urea.  In Example (1) various proportions of di-glycidyl ether and phthalic anhydride as shown in Table I were heated to 125 DEG  C. in presence of 1% of oxazolidone-2.  The mixture while fluid was poured into a mould and polymerization continued for times specified in the tables.  Tables are also given of the effect on the final appearance of the resin by substitution of other anhydrides for the phthalic anhydride.  Tables are also given illustrating the effect of using the following catalysts: urea, succinimide, phthalimide, dicyandiamide, chlorinated urethane of ethylene glycol, aluminium acetylacetonate, phenyl oxazolidone.  Examples (6) and (7) describe the addition of graphite and silica.
Patent GB-552068-A (GB)
Title: Improvements in radio telegraphy
IPC: H04L27/10
Filed: 1941-11-24
Abstract: 552,068. Wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 24, 1941, No. 15139. Convention date, Nov. 23, 1940. [Class 40 (v)] In transmitting telegraph and like signals by the use of different marking and spacing frequencies, multi-path distortion due to reflection and echo effects is reduced by arranging for a transient overswing of frequency at the beginning of each mark and space, as indicated in Fig. 4 in which ordinates represent frequency and abscissae time. The keying device 1, Fig. 6a, may be connected to the frequency-changing transmitter 3 through a condenser-shunted resistance 2, so that a square-topped D.C. voltage at 1 is converted to a voltage across 5 of the shape shown in Fig. 4. An alternative arrangement comprises a series resistance between a and b, and a shunt at b comprises a resistance and inductance in series Fig. 6b (not shown). When the keyed voltage is alternating, the source 11 is connected to the transmitter 3 through a series resistance R<1>, Fig. 7a, and a series-tuned shunt path comprising resistance R<11> capacity C and inductance L. The shunt path may be replaced by a parallel-tuned circuit in series with the resistance R<1>, Fig. 7b (not shown). At the receiver distortion due to the overswing is corrected by connecting between the. detector 7 and the utilization device 9 an inductance and a resistance in parallel as shown in Fig. 8a, or a network comprising a series resistance, and a seriesconnected condenser and resistance in shunt, Fig. 8b (not shown). For receiving alternating current signals, networks comprising parallel-tuned shunt circuits, or series-tuned series circuits are employed, Fig. 9a and 9b, (not shown).
Patent GB-272503-A (GB)
Title: Improvements in or relating to absorption refrigeration apparatus
IPC: F25B15/10
Filed: 1927-06-07
Abstract: 272,503. Electrolux, Ltd., (Assignees of Platen-Munters Refrigerating System Aktiebolag). June 9, 1926, [Convention date]. Refrigerating, absorption processes for.-In continuous-cycle systems containing an inert auxiliary medium, refrigerent not vaporized in the main evaporator is evaporated in a vessel or jacket to cool parts of the apparatus itself or media therein. The apparatus shown comprises an evaporator G, absorber A, generator K, rectifier V, condenser C, liquor pipes 11, 12 and heated riser pipe P. The mixture of inert gas, refrigerant vapour and liquid refrigerant passes from the main evaporator G, Fig. 1, through a vessel H having external gills 13 and the further evaporation therein serves to cool the separated inert gas flowing from the absorber by a pipe 16 and around the vessel H back to the evaporator. In another arrangement, the vessel H may be arranged on the upper part of the absorber and around the return pipe for inert gas. Some of the liquid refrigerant from the condenser mav be led into the vessel H. In a further arrangement, shown in Fig. 3, the inert gas and refrigerant vapour flow from the evaporator and through a pipe 34 and a heat interchanger S before entering the absorber A, and the supplementary evaporator H, which is constituted by a sleeve having a spiral internal baffle fitting around the inert gas return pipe 30, is supplied from a branch pipe 31 in front of the interchanger S.
Patent GB-833746-A (GB)
Title: Improvements in or relating to tools or dies for working sheet metal
IPC: B21D37/10
Filed: 1956-05-15
Abstract: 833,746. Punching; stamping. TEMPLET INDUSTRIES Inc. May 15, 1956 [Sept. 14, 1955; Nov. 28, 1955], No. 15156/56. Class 83(4). Tools for cutting out and shaping sheet metal or for shaping sheet metal blanks consist of a die having a strip steel blade of a desired outline projecting from a supporting block cooperating with a metal punch member on a supporting block, the punch member having an outline corresponding to that of the blade and a shaped surface for shaping the work. An apertured flanged stamping 18, Fig. 1, is produced from a sheet metal blank by a tool having a die block 23, say of ply-wood, made in three parts 25, 37 and 53 between which are held blades 32 and 49, and a punch block 24 carrying a punch member 65. The blades 32 and 49 are each formed by a plurality of sections having one edge flush with the upper face of the block 23. The other edges of the blades co-operate with the punch member 65 to punch out the central aperture 21 and to bend the outer edge of the blank around the curved periphery of the punch member 65 which has a peripheral recess equal to the thickness of the blank. Punch pins 42 in the die block punch holes 22 in the blank. Resilient strippers 46, 68 are provided. A tool for cutting and forming a concave circular blank 123, Fig. 8, from metal sheet has a two-part die block holding a circular blade 114 and a resilient pad which press the work on to the domed punch member 100. In a modification, Fig. 11, the punch member 130 has a curved edge which is not recessed so that the blade 134 bends and trims the blank.
Patent GB-891063-A (GB)
Title: Improvements in or relating to grenades
IPC: F42B12/20
Filed: 1960-04-29
Abstract: 891,063. Grenades. LOSFELD, A., and ROUSTANT, M. April 29, 1960 [Nov. 29, 1959; March 25, 1960], No. 15173/60. Class 9(1). A hand grenade, which may also be fired from a gun by means of a detachable tail, comprises an explosive mass 2, which may have a thin metal sheath. An axial passage through the explosive houses a detonator 7 and leads from a threaded base recess to the bottom of a chamber housing an igniter. The chamber is lined by a continuation of a metal sleeve 3 placed on the upper end of the grenade and having inwardly stamped-out lugs 5, which engage in a helicoidal groove 9 of a thick steel casing 14 placed over the explosive 2. Over the igniter a knurled cap 6 is secured by a bayonet joint. The grenade may be thrown without the casing 14, the cap 6 being first removed. The igniter may be provided with a percussion or a delay fuze. To fire the grenade from a gun a tail 11, Fig. 4, of duralumin is screwed into the base through an opening in the casing 14. A ring 12 attached to the tail is equipped with fins, which may be made from bent-up arcuate segments, Fig. 5, of which the webs are soldered or riveted in position. A triangular tip of each fin may be bent out of the radial plane in which the fin lies. At the forward end of tube 11, a safety member 11b may be provided. This member is of thick steel and has a threaded stem 10a for attachment to the grenade. The member 11 b is screwed on the tail in such a way that a gap exists between the launching tube 13 and the inner end surface of the member. A blind hole 17 covered by a washer 18 is provided, so that if a bulleted cartridge is inserted accidentally in the gun, the bullet is flattened and cannot fire the detonator.
Patent GB-670794-A (GB)
Title: Improvements in mechanical propelling systems for water craft and aircraft
IPC: B63H1/36
Filed: 1949-06-09
Abstract: 670,794. Propelling ships and aircraft. ZLOCZOWER, J. June 9, 1949, No. 15179/49. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec 9, 1949.] Classes 4 and 114. A mechanical propelling system for ships and aircraft consists of one or more propelling blades 1, each hingeably joined to a driving gear at two or more positions and activated at these positions by the driving gear which puts the blade into reciprocating, oscillating or swinging motion and at the same time periodically changes its angle of incidence by pivoting it about two or more axes, which axes pass through the centre of the hingeable connections so that by the action of the blades and the reaction of the fluid there are produced forces on the blades which are transmitted to the craft, which is thereby propelled and/or lifted. In the embodiment shown in Fig. 3 the driving gear comprises crankshafts 3, 3' driven by a source of power and having connecting rods 2, 2' joined by crossheads 6, 6' to rods 7, 7<SP>1</SP> on which the propelling blade 1 is mounted. The blade is hinged to the rod 7<SP>1</SP> by a bolt 11 and to the rod 7 by a bolt 9 which slides in a hole 10. In the embodiment shown in Figs. 20-21 the driving gear comprises eccentrics 10, 11 driven by a shaft 9 and having rods 18, 19 joined by universal or ball and socket joints 7, 8, to rods 5, 6, on which the blade 1 is mounted. In the first mentioned embodiment the propelling force may be transmitted directly from the blades to the craft's body by guides in which the blades slide. In the second mentioned the blades can be locked in a position to serve as wings.
Patent GB-590604-A (GB)
Title: Improvements in mining machines
IPC: E21C27/46
Filed: 1944-08-09
Abstract: 590,604. Mining-machines. MAYOR & COULSON, Ltd., and MAVOR, J. B. Aug. 9, 1944, No. 15182. [Class 68 (i)] Relates to mining machines of the kind in which, as the machine advances, a wedge-like head is thrust into the coal roughly parallel to the coal face to split away the coal, and comprises the provision in the head of one or more chisel-like parts and electrically, pneumatically or hydraulically operated power-hammering means applying blows to said parts as the head advances. The machine may include a shearing cutter chain as in Specification 565,342. The machine as shown comprises a jack B pivoted to the piston-rod 1 of a ram C, the cylinder 3 of which is connected to the head A, the jack and head being advanced alternately by the ram. The head comprises a centre portion A<1>, pivotally adjustable about a vertical axis and provided with three prongs with movable tips 6, behind each of which is a compressed-air hammer mechanism 7 ; the head also has a lower portion A<3> with a horizontal cutting edge and a laterally-delivering scoop, and a pivoted roof-cutting portion A<2> as described in Specification 590,602, the portions A<2>, A<3> having teeth and hammer mechanisms similar to the parts 6, 7.
Patent GB-151092-A (GB)
Title: Improved process of making steel
IPC: C21C7/00
Filed: 1919-06-17
Abstract: 151,092. Fisk, G. L. June 17, 1919. Cast-iron processes; converters.-Iron is preliminarily refined by subjection to pneumatic treatment in the ladle. The air-supply apparatus comprises a blast head or nozzle 4 protected by refractory rings 12, 13, and secured to a vertical tube 15. This tube slides over a stationary blastpipe 17 which connects with a source of compressed air by a lateral passage 27. The nozzle and tube are raised and lowered by guide rods 19 connected with the upper end of a plunger 26 working in a cylinder 25.
Patent GB-196502-A (GB)
Title: Cloth for drying and polishing silver and plated articles
IPC: A47L13/16
Filed: 1922-05-31
Abstract: A preparation for use with a cloth for drying and polishing silver and like plated articles consists of one part by weight of ammonia, one part of whitening and two parts of water.
Patent GB-719501-A (GB)
Title: Improvements in or relating to burner structures comprising gas flow ducts into which fuel is injected to be burned
IPC: F23R3/00
Filed: 1952-06-17
Abstract: 719,501. Jet propulsion plant. UNITED AIRCRAFT CORPORATION. June 17, 1952 [Sept. 25, 1951], No. 15257/52. Class 110(3) [Also in Group XII] A gas turbine jet-propulsion engine in which the turbine exhaust is reheated has a variable area discharge nozzle controlled by opposed eyelid members 12 which are pivoted about an axis 14. The members 12 are actuated by a hydraulic piston and cylinder unit, the piston rod 20 of which is connected through a carriage 22 on a track 24 to a rod 26 coupled to the eyelid members. Fuel is fed to the jet pipe through a manifold 44 and radially extending nozzles 46. The valve controlling the supply of fuel to the nozzles is interconnected with the valve 28 for controlling the eyelid members. Flame-holders 48, 50 are located within the thrust augmenter by tubes 52 which are supported in bushings 54 and slide in a cross-shaped member 56. At the intersection of the flameholders with the tubes, the flameholders carry a pair of radially spaced sleeves 58 which slidably surround the tubes and are themselves surrounded by a collar 68. Cooling air is fed through a fitting 60 to the tubes 52 and escapes into the flameholders through ports 66 and the underside of the collar 68. When the reheater is in operation, fluid is introduced into the cylinder 16 to close the eyelids and a part of said fluid is fed through a check valve into the fitting 60.
Patent GB-593855-A (GB)
Title: Improvements in or relating to machines for lining books
IPC: B42C9/02
Filed: 1945-06-15
Abstract: 593,855. Machine frames. AULD, J. T., and BRYDEN, S. June 15, 1945, No. 15273. [Class 80(iv)] [Also in Group XV] The frame of a book-lining machine consists of units, comprising frames of similar construction carrying elements for one or more particular lining operations, adapted to be accurately connected together to enable a sequence of operations to be performed. Each frame consists of a sole plate a, a pedestal c at one end of the plate, a supporting table d carried by the pedestals of adjacent units and a pair of side or guide rail sections g carried by the table. The parts are connected to corresponding parts of adjacent units by dowel-pegs e, h and bolts or screws b, f, j. Drive shafts m, and similar operating parts, are also preferably in sections and are inked together by muff couplings k.
Patent GB-662275-A (GB)
Title: Propulsion and steering mechanism for toys
IPC: A63H30/00
Filed: 1949-06-09
Abstract: 662,275. Mechanical toys. ERNST, M. June 9, 1949, No. 15360/49. Class 132 (iii). A manually operated driving and steering device for remotely controlling wheeled toys comprises a casing b with gears h, g, f, l actuated by a crank handle k and connected to an outer member n of a cable by a tube m. Inner wire e of the cable is connected to the steering mechanism on the toy and moves as a plunger a is pushed in or allowed to move out under the tension of spring d. Specification 662,274 is referred to.
Patent GB-308515-A (GB)
Title: Improvements in or relating to power-operated printing machines
IPC: B41F3/30
Filed: 1928-05-25
Abstract: 308,515. Mansfeld, H. May 25, 1928. Cylinder machines.-A printing-machine of the kind in which a flat bed co-operates with a scraper or non-rotatable impression member is constructed with a reciprocating bed coacting with a scraper reciprocating in the opposite direction. The printing bed or lithographic stone 5 is mounted on a carrier 6 which is reciprocated in guides by means of cords 26, 27 passing over drums 25 on shafts 24 at each end of the frame, the other ends of the cords being attached to a sliding carriage 3 so as to cause this carriage to be reciprocated in a direction opposite to the bed. The drums 25 are driven from a motor 32 by means either of a direct band 33, or a crossed band 34 coacting with loose and fixed pulleys, and automatically operated beltshifting means causes reversal of the drive at the end of the printing stroke. The impression or surface member 10 is mounted adjustably in a slide 19 supported by the carriage 3, and a counter-pressure roller 4 is also mounted in the carriage 3. The slide 19 is, adjustable by screws operated by worm-gearing from a hand-wheel 23, and it can be raised to and from the bed 5 by means of a crank 11 on a shaft 13 fitted with an operating handle 14.
Patent GB-295097-A (GB)
Title: Improvements relating to electric lighting systems and apparatus
IPC: H05B39/00
Filed: 1927-06-09
Abstract: 295,097. M-L Magneto Syndicate, Ltd., and Watson, E. A. June 9, 1927. Drawings to Specification. Supplying consuming devices from variablespeed generators. - Lamps are supplied from a variable-speed alternator through a condenser which prevents the loading of the alternator until the frequency is adequate. The system may be applied in fluid-operated apparatus for use in mines in which the lamp and condenser are combined with a generator driven by a compressed-air turbine, the arrangement having a stabilizing effect upon the turbine. When supplying lamps in parallel from the same alternator a condenser in series with each lamp or a single condenser may be employed according as the lamps are independently controlled or not.
Patent GB-558316-A (GB)
Title: A process of isolating chorionic substance and the product thereof
IPC: A61K38/24
Filed: 1940-10-18
Abstract: 558,316. Hormones and the like. SCHERING CORPORATION. Oct. 18, 1940, No. 15435. Convention date, Oct. 18, 1939. [Class 81 (i)] A chorionic substance adapted to luteinize and cause growth of follicles is extracted from protein materials containing it by extracting with an aqueous liquid, adjusting the pH to at least as low as 5, treating the extract with an organic waterimmiscible liquid so as to form a gel with the protein matter and separating the aqueous layer containing the chorionic substance. The aqueous layer is further treated to precipitate mucoid type proteins by addition of a water-miscible organic liquid in amount insufficient to precipitate the chorionic substance and then with a further volume of water-miscible organic liquid to precipitate the chorionic substance. Plasma or placentae of pregnant animals or humans are suitable sources of the material. Detailed examples of preparations from such sources are given in the Specification. Specifications 313,923, 336,471, [both in Class 81 (i)], and 481,924 are referred to.
Patent GB-1060475-A (GB)
Title: Automatic machine for securing the heel onto the sole of a shoe
IPC: A43D25/12
Filed: 1964-04-15
Abstract: 1,060,475. Boots &c. A. BRUGGI [trading as MAISON BRUGGI ALBERTO]. April 15, 1964, No. 15523/64. Heading A3B. A machine for securing the breast flap of a sole to a heel consists of a base plate 1 having positioning devices for the sole, a gripper element 10 which grips the breast flap of the sole and bends it upwards, a securing device which brings a shoe heel into engagement with the underside of the bent portion of the sole, and a pressure member 50 which applies pressure to the breast flap in order to assist adhesion of the sole to the heel. The sole is positioned on the base plate 1 by arms (16, 17) (Fig. 1, not shown) which have rollers on their outer ends and which are mounted in a block 3 whose position can be adjusted by means of slides (2, 4). The rear end of the sole is positioned by rollers (8, 9) on arms 33. The breast flap of the sole is gripped between jaws (34, 35) (Fig. 4, not shown) which are operated by piston and cylinder (36) and which form the gripper element 10. The gripper element 10 is carried on one end of a lever 22 which is pivoted to the base plate 1 at 23. The heel 47 is clamped against a slide 30 by a clamp 46 operated by piston and cylinder 44 and the slide 30 is moved towards the breast flap of the sole by a piston and cylinder 56. During this movement the tension in a cable 25 is released allowing the lever 22 to be rotated by a spring 24, rotation of the lever 22 causing the breast flap of the heel to be bent upwardly. The pressure member 50 is an inflatable pad which is carried by an arm 48 on a shaft 52 which is raised and lowered by a piston and cylinder 51. As the shaft 52 is lowered a cam track 54 causes the shaft 52 to swing the arm 48 and the pressure pad 50 against the breast flap of the sole.
Patent GB-221569-A (GB)
Title: Improvements in and relating to steam superheaters
IPC: F22G7/02
Filed: 1923-06-14
Abstract: 221,569. Spencer, A. June 14, 1923. Fire and smoke tube superheaters. - In a superheater element of the short return loop type described in Specification 13762/12, the tubes 6, 7 of the short return loop are of flattened form in cross-section and are of an internal crosssectional area about equal to that of the portion of the element of circular cross-section. The part 4<a> of the inflow tube adjacent to the return loop, or the whole of the inflow tube, may also be of flattened form in cross-section. Further, the part 5<a> of the outflow tube 5<a> adjacent to the return loop may be of flattened form in crosssection. All the flattened tubes are of the same internal cross-sectional area. The tubes 4<a>, 6, 7, 5<a> instead of being placed side by side as shown, may be arranged along radii or around the sides of the smoke-tube.
Patent GB-218316-A (GB)
Title: Manufacture of tanning materials
IPC: C14C3/18
Filed: 1924-06-27
Abstract: Synthetic tanning-agents are prepared by heating sulphochlorides of oxyaryl-carboxylic acids with oxyaryl compounds in the absence of alkali, when condensation takes place with elimination of hydrochloric acid and products are obtained which are easily soluble in water.  According to the examples, (1) salicylic acid sulphochloride is heated with phenol, hydroquinone, salicylic acid or 2-oxynaphthalene-3-carboxylic acid, (2) metacresotinic acid sulphochloride or 2-oxynaphthalene-3-carboxylic acid sulphochloride is heated with salicylic acid, (3) salicylic acid sulphochloride is heated alone to a temperature of 170-180 DEG  C.
Patent GB-1439412-A (GB)
Title: Device for removing dirt from record-player needles boilers
IPC: G11B3/58
Filed: 1973-03-31
Abstract: 1439412 Cleaning record player stylus J GIBSON 26 June 1974 [31 March 1973] 15589/73 Heading G5R In a record player a stylus is cleaned, at or adjacent its rest position, by directing a stream of gas, eg. air, thereat.
Patent GB-218088-A (GB)
Title: Improvements in and relating to steam separators and the like
IPC: F22B37/32
Filed: 1923-06-15
Abstract: 218,088. McAuslan, W., (Kerr, TV.). June 15, 1923. Density separators.-A steam separator has a cylindrical chamber into which the wet steam passes by a tangential inlet K and has a spiral passage from which the dry steam escapes by a number of openings R to a central cylinder E and outlet M. The cross-sectional area of the passage is gradually reduced to keep the velocity of the steam practically constant; this may be accomplished by reducing the height of the passage as shown in Fig. 1, or the width, or both. The partition P of the passage is inclined downwards from the inner cylinder E to assist the separating action and the water is discharged from the outlet L. When the separator is used within a boiler the dry-steam outlet M is connected to the stop valve spigot S, Fig. 4, and the pipe H from the water outlet L has a non-return valve J through which the water passes back into the boiler.