baber/WOPTO huggingface dataset:
Patent GB-456974-A (GB)
Title: Manufacture of diterpenes
IPC: C07C2/02
Filed: 1935-04-18
Abstract: Diterpenes are prepared by subjecting terpene hydrocarbons C10H16 of the p-cymene group to heat treatment in the liquid phase in the presence of silica or an aluminium silicate as catalyst.  Suitable terpene hydrocarbons are pinene, camphene, phellandrene, limonene and dipentene.  Catalysts mentioned are silica itself, minerals such as bauxite and certain varieties of gypsum which contain free silica, and artificial or natural aluminium silicates such as clay.  Their activity may be increased by pretreatment with acid, but no metallic chloride should be present.  The polymerization is preferably conducted at a temperature of 120--200 DEG  C.  When pinene is treated, the process may be stopped when the product contains substantial quantities of both diterpene and camphene, which are then separated.  Examples describe the treatment of dipentene and phellandrene in the presence of a "Beacon Hill" clay to produce diterpene, of turpentine oil in the presence of a Beacon Hill clay to give a mixture of camphene and diterpene, and of dipentene in the presence of either kaolin pretreated with dilute sulphuric acid or anhydrous silicic acid previously activated with dilute hydrochloric acid, to yield diterpene.  Specification 10227/10, [Class 2 (iii)], is referred to.
Patent GB-513802-A (GB)
Title: Improvements in and relating to valves adapted for rapid or gradual operation
IPC: F16K31/528
Filed: 1938-04-22
Abstract: 513,802. Manually-operated valves. LANGSDORF, W. April 22, 1938; No. 12073. [Class 135] A valve adapted for rapid or gradual operation comprises a valve member 2 carried on a screwed spindle 3 mounted in a piston-like nut member 5 slidable in a tubular extension 6 of the valve casing and having one or more pins 8 slidable in one or more notched slots in the extension 6 the notches receiving the pins to prevent axial movement of the nut member. As shown two diametrically-opposite pins 8, 8<1> are provided, one 8 projecting into a slot 7 having an upwardly extending notch at one end and the other 8' engaging a slot 11 with a downwardly projecting notch 12. The pins are maintained in the notches by a pivoted rod 13 having a tension spring 14 at one end, or by a bar 16, Fig. 3, having compression springs 17 at one or both ends. The spindle 3 has a handwheel 10 and moves in a felt packing 19. A cam or lever may be provided to control the movement of the nut 5.
Patent GB-455618-A (GB)
Title: An improved paint-removing composition
IPC: C09D9/00
Filed: 1935-04-23
Abstract: A paint-removing composition is prepared by superposing upon a layer of soft soap, dry soda ash and lime, adding boiling water to cause the soda ash and lime to react, then mixing the whole of the ingredients, and subsequently adding ammonia.  Further water may be added to produce a composition of the desired consistency.
Patent GB-669000-A (GB)
Title: Improvements in electrical surge diverters
IPC: H01T4/20
Filed: 1950-05-16
Abstract: 669,000. Protective arrangements. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. May 16, 1950 [June 18, 1949], No. 12166/50. Class 38 (iv). In a surge diverter comprising a stack of series-connected units 1, each consisting of a plurality of spark gaps 6 in series with voltage-dependent resistors 7, the number of gaps in any unit is proportional to the voltage across that unit (as determined by the natural voltage distribution along the stack) so that all gaps are equally stressed. The lowermost unit may consist solely of voltage-dependent resistors. To prevent breakdown of the units containing the smaller numbers of gaps, due to modified voltage distribution along the stack caused, for instance, by moisture on the insulating tubes housing the units, the effective lengths of the tubes of such units may be reduced by external conductive bands 8 connected to the metal flanges 2 by which the units are joined together.
Patent GB-460642-A (GB)
Title: Improved radio system for giving bearings in air and marine navigation
IPC: G01S1/68
Filed: 1935-04-23
Abstract: 460,642. Wireless signalling. SOC. INDUSTRIELLE DES PROCEDES W. A. LOTH. April 23, 1935, No. 12221. Void. Convention date, Sept. 5, 1934. [Class 40 (v)] For aiding navigation, a network of radio buoys or beacons is provided spaced over a territory to produce overlapping beams each of which carries a distinctive modulation produced phonographically. The beacons preferably all use the same wavelength which is less than ten metres, the signal being in Morse code or telephony. The signals may give the name of the place, if necessary in cipher. The signals from neighbouring beacons may be timed by synchronous motors so that they are never emitted simultaneously or they may be brought into operation by a signal from the craft desiring to use them.
Patent GB-1531886-A (GB)
Title: Apparatus for film application
IPC: G03F7/00
Filed: 1976-03-26
Abstract: 1531886 Contact printing using a liquid photopolymer HERCULES Inc 26 March 1976 [27 March 1975] 12232/76 Heading G2A Apparatus for applying a smooth protective film 14 over a transparency (before coating with liquid photopolymer and a backing sheet) comprises a stationary flat plate 12 having vacuum channels in its surface on which the transparency is placed), a hot cutting wire 40 and a vacuum bar 38 at one end of the flat plate, and a reciprocatory carriage 10 having film unwinding and smoothing strokes and carrying a film supply roller 16 having a friction clutch, a film smoothing pressure roller 30 which is raised from its operative position during the unwinding stroke, a vacuum bar 44 which is movable to force the film into contact with the cutting wire and to hold the cut end of the supply roll film at the end of the film smoothing stroke, and an air bar 48 which releases the film form bar 44 and blows it into contact with plate 12 at the end of the film unwinding stroke. Bars 38 and 44 are activated at the end of the film smoothing stroke (by means of an activator 42). Wire 40 is energized, bar 48 is activated, and bars 38 and 44 are deactivated at the start of the film smoothing stroke. A safety clamp 49 may be momentarily activated as the film contacts plate 12 to positively secure the leading film edge. During a subsequent unwinding stroke, photopolymer is applied from a rotatable container 18 and a backing sheet (20), Fig. 5, (not shown) is applied using a roller 46, exposure and removal of the exposed material being effected before the subsequent smoothing stroke.
Patent GB-969879-A (GB)
Title: Release rotation mechanism for rock drills
IPC: E21B6/06
Filed: 1963-03-28
Abstract: 969,879. Screw-and-nut gearing. CHICAGO PNEUMATIC TOOL CO. March 28, 1963 [May 15, 1962], No. 12305/63. Heading F2Q. [Also in Division B4] A release rotation mechanism for a percussive rock drill (see Division B4) comprises a ratchet ring 15 engaged by spiral splines 21, 22 with a hammer piston 11 connected by straight splines 18, 19 with a chuck driver 16, a pair of pawls 35 being loaded by springs 39 into engagement with the ratchet and carried out of engagement by means of a rotary sleeve 41. The pawls are pivotally mounted in the housing 13 of the tool and urged by the springs 39 into contact with the teeth 31 of the ratchet as shown in Fig. 4. Upon rotation of the sleeve 41 by means of a slidable plunger 43, cam surfaces 46 on the sleeve lift the pawl out of engagement with the teeth; spring indent means are provided to lock the plunger in its two positions. In operation of the tool, with the pawl in engagement with the ratchet as shown in Fig. 4, downward movement of the piston 11 causes the ratchet to rotate freely in an anticlockwise direction away from the pawls due to the action of the spiral splines 21, 22, the piston thereby not being rotated so as to cause rotation of the chuck driver 16 and chuck 17. Upon upward movement of the piston, the ratchet is prevented from rotation clockwise by engagement of the teeth with the pawls and thus the piston is caused to rotate and thereby, via the straight splines 18, 19, rotate the chuck driver and chuck. In order to prevent rotation of the chuck on the upward stroke, the sleeve 41 is rotated by the plunger 43 to disengage the pawls from the teeth.
Patent GB-941666-A (GB)
Title: Coupler for colour photography
IPC: G03C7/34
Filed: 1960-04-07
Abstract: 1-Hydroxy-N-(2-O-acetamidophenyl-ethyl) - 2 -naphthamide is prepared by acetylating b -phenethylamine with acetic anhydride, nitrating the product and separating the o- and p-nitro compounds, de-acylating the o-nitro derivative to give the amine and reacting this with phenyl 1-hydroxy-2-naphthoate to give 1-hydroxy-N-(2-O-nitrophenyl-ethyl)-2-naphthamide, reducing the nitro group to an amine and acylating the product with acetic anhydride. An alternative preparation is to prepare ethyl o-nitrophenyl-pyruvate by reacting diethyl oxalate with o-nitrotoluene and hydrolyse this to the free acid, which is then reacted with hydroxylamine hydrochloride, made basic with caustic soda and heated with sulphuric acid to give o-nitrophenyl-acetonitrile.  The nitro group is then hydrogenated and the amino group acylated to give o-acetamidophenyl-acetonitrile. Hydrogenation using a nickel catalyst then gives o-acetamidophenyl-ethylamine which is condensed with phenyl 1-hydroxy-2-naphthoate to give the required product. Specifications 447,092, 507,841 and 664,580 are referred to.
Patent GB-268166-A (GB)
Title: Improvements in woven fabrics
IPC: D03D11/02
Filed: 1926-05-13
Abstract: 268,166. Laurent, P. J. May 13, 1926. Cartridge belts.-A fabric is woven with two superposed webs t, t' which are connected together at the parts b, so that tubular portions a are formed across the fabric at equidistant parts or otherwise in the length of the fabric. Rubber warp threads are introduced in the web t but not in the web t<1>. The fabric is woven under tension so that when removed from the loom, the elastic parts t of the tubes a contract and cells are formed. The weaving in the parts b is such that although these parts contain rubber threads they are not elastic. The cells may be formed with narrowed portions. Metallic warp threads l may be placed in the selvage so as to give some rigidity at the entrance of the cells. The strips produced may be used for cartridge belts or machine gun bands. The cells may be made conical or cylindro-conical to receive the cartridges.
Patent GB-557947-A (GB)
Title: Control of supercharged, fuel-injection engines
IPC: F02D1/00
Filed: 1942-09-02
Abstract: 557,947. Regulating. SANDERS, A. F. Sept. 2, 1942, No. 12364. [Class 7 (vi)] In a supercharged, governor-controlled, fuel-injection engine in which the boost pressure varies with the engine speed, the maximum fuel delivery in full-load conditions is varied responsively to the engine speed. The opening movement of a fuel control rod 16, moved manually, in that direction by a bell crank lever 19, spring 20 and lever 22 and urged towards the closing position by a piston 15 actuated by boost pressure in a cylinder 14, is limited by a larger piston 27 urged away from the piston 15 by the boost pressure operating against a spring 28, the tension of which is adjustable ; the position of the piston 27 depends on the boost pressure which thus determines the maximum opening of the fuel valve at different engine speeds. The piston 27 also acts through a linkage 30, 31 to vary the timing of the fuel injection. To provide fuel for starting, a cam 24 on a gravity-controlled lever 25 rocks the bell crank lever to move the rod 16 and piston 15 inwards, a small flat on the end of the cam maintaining the lever in that position until sufficient pressure is built up in the cylinder 14 to free the lever from the cam. Rotation of the lever 25 in the opposite direction closes the fuel valve and stops the engine. The piston 27 may be replaced by a wedge or cam disposed in the path of the piston 15.
Patent GB-130457-A (GB)
Title: Improvements in and relating to Clutches.
Inventor: FALL THOMAS ARTHUR
IPC: F16D11/12
Filed: 1918-07-30
Abstract: 130,457. Fall, T. A. July 30, 1918. Levers and rods, locking.-The clutch-operating lever n is locked in the engaging position by a spring-pressed lever p and is forced to the disengaging position by the action of the clutch springs when the lever p is lifted by hand actuation.
Patent GB-252194-A (GB)
Title: Improvements in loud speakers
IPC: A45C13/00
Filed: 1926-05-14
Abstract: 252,194. Gramophone Co., Ltd., (Assignees of Victor Talking Machine Co.). May 14, 1925, [Convention date]. Loud-speakers; magnetic instruments; diaphragms.-A loud-speaker of the large diaphragm type comprises a pair of diaphragms mounted in a casing so as to form an enclosed space, one only of the diaphragms being connected to electrically operated means mounted within the space. The diaphragms are preferably of the pleated type described in Specification 11015/09. In the construction. Figs. 1 and 2, the casing 11 is carried by a base 10, the diamond-shaped diaphragms 13, 13<a> being secured at their peripheries to frame members 12 by clamping strips 14 and screws 15. An outer casing 18 for the electrical unit is mounted in clamping ears 17 on a pedestal 16, an armature 23, mechanically connected to the diaphragm 13 by a threaded member 24, being secured across the open end of the casing. An inner casing 19 carrying the magnet 20, pole-pieces 21, and coils 22, is slidably mounted in the casing 18 and can be adjusted with respect to the armature 23 by means of an eccentric portion 28<a> on a rod 28 operated by a shaft 27 and knob 26. Figs. 10 and 11 show an alternative construction for securing the peripheries of the diaphragms to the members 12 comprising a number of resilient member 46 secured to the members 12 by screws 15, with or without the interposition of a ring 44. In the modified construction, Figs. 4 and 5, the circular diaphragms 34, 34<a> have a ring of felt 33 glued around their peripheries, a number of hooks 37 being secured at equal intervals to the felt 33. The frame members 36 are provided with a plurality of staples 38 arranged in staggered relation with the hooks 37, and the peripheries of the diaphragms are secured against the members 36 by a flexible lacing 39 alternately engaging a hook and a staple. One or more springs 40 may be inserted in the lacing 39. Each diaphragm may be secured at its centre between the overlapping flanges of discs 43 secured across the ends of inner and outer concentric tubes 41, 42. Specification 238,310 also is referred to.
Patent GB-576606-A (GB)
Title: Improvements in travelling grates for furnaces
IPC: F23H11/04
Filed: 1944-06-30
Abstract: 576,606. Travelling grates. MORTON, L. June 30, 1944, No. 12490. [Class 51 (i)] A travelling grate in which drop links are threaded on carried bars 2 attached to links of the driving chains is provided with side drop links having flanges a adapted to overlap the ledge-plate 1, canting of these links being prevented by the provision of a downwardly projecting portion b spaced from the web c and formed with a similar gapped eye. The links of the portion b are connected to the web by members d and a split pin 3 is passed through the bar 2 between the portion band web c to limit the movement of the link along the bar. Specification 566,717 is referred to.
Patent GB-221477-A (GB)
Title: Improvements in or relating to piston engines
IPC: F01B9/04
Filed: 1924-05-21
Abstract: 221,477. Ostberg, K. G. Sept. 6, 1923, [Convention date]. Driving gears.-In an internal-combustion or other engine, the path of the crank pin is shortened in relation to the piston stroke by interposing rack-and-pinion gearing between the piston and connecting-rod. The connecting-rod 3, Fig. 1, is secured to a pinion 1 which engages a stationary rack 4 and is rotated by a rack 5 carried by the piston. In the construction shown in Fig. 2, wherein the crank path is further reduced, the rod 3 is pivoted to the pinion 1 between the vertical plane of its axis and the stationary guide 4. The piston and cylinder are relieved from lateral pressure by off-setting the crank shaft as shown, the engine running clockwise. A single-cylinder, internal-combustion engine with off-set crank shaft is shown in Fig. 4. The piston has a segmental projection 12 carrying a rack 14 secured to a flange 13 thereon, and a stationary rack 16 engaged by the pinion 21 is mounted in the lower part of the cylinder wall. The pinions and racks are provided with smooth rolling-tracks. A twin engine with connected upper cylinder ends is described wherein the pinions engaged by the piston racks are connected by a rod to a single shaft.
Patent GB-483608-A (GB)
Title: Improvements in safety razors
IPC: B26B21/18
Filed: 1937-05-03
Abstract: 483,608. Razors. GOUR, SIR H. S. May 3, 1937, No. 12552. [Class 30] A safety razor combines the known features of comb teeth 1 at an acute angle to the edge of the guard, and an adjustable articulated handle. The guard is formed with a diamond-shaped projection 15 for locating the blade and is hinged at 6 to the end cap 3, the two being clipped at the other end for clamping the blade, by a hinged clip 4. The articulation of the handle is by ball and socket, or it may be by simple pivot, in which case the locating and clamping means are of the known two-pin and screwed stud type, respectively.
Patent GB-146682-A (GB)
Title: Improvements relating to automatic players for musical instruments
Filed: 1919-05-20
Abstract: 146,682. White, A. E., (Phil-Har-Chee Piano Player Corporation). May 20, 1919. Exhausting air; expression-controlling.-A device for automatically controlling the suction by opening a by-pass to the pump comprises a box 50, Fig. 2, with a main chamber 51 connected to the wind-chest and also, preferably by way of a small hole in a disk 52<1>, with a pneumatic 52. Collapse of the pneumatic .52 causes opening of a valve 63<1>; as shown, the pneumatic is provided with a plate 66 through which works a rod 65 provided with abutment nuts 65<1>, 65<11> and attached to the valve plate 64. The valve 63<1> admits air to a chamber 62 separated by a diaphragm 61 from the chamber 51. A valve 57 operated by the diaphragm then disconnects a second pneumatic 58 from the atmosphere and connects it to the chamber 51. The second pneumatic, on collapsing, operates a rod 67 to open the by-pass to the exhaust pump, so that air circulates through the pump and nullifies its action. At the conclusion of the motion of the second pneumatic 58, a rod 59 thereon strikes a valve 55 on the first pneumatic 52 and admits air thereto, so that the parts return to their original positions. A bleedhole connects the chambers 51 and 62 separated by the diaphragm. Also leading to the lower chamber 62 is a pipe 71 provided with a manual valve so that the suction can be reduced at will for soft playing. The by-pass is operated' from the rod 67 through a lever and a rod 69, Fig. 5, and consists of a spring-closed valve 35 between the two chambers 32, 33 in a shallow casing. From the chamber 33 one passage 29 leads to the wind chest, and two passages 33<1>, Figs. 4 and 5, lead to the oumps. In the chamber 32 are spring-closed valves 48 covering pairs of ports 46 leading through silencing strips of felt to the interior of the four pumping bellows 40. When the by-pass valve 35 is open, air is drawn into the bellows through the usual valves 38 from chamber 33 and, on closure of the bellows, is discharged into chamber 32 and thus into chamber 33 again. The four bellows are mounted on opposite sides of two valve boards 37. Cranks 44<1>, preferably set at 90 degrees apart on a power shaft, drive the inner bellows through connecting-rods 43. Links 42 connect each outer bellows to the corresponding inner one. The pipes leading from the chamber 33 and from the valve chamber 51 to the wind chest do not open directly into this chest but into a chamber separated from the chest by a non-return valve, so that a treadle pumping device can be used when the power pumps are not working.
Patent GB-730193-A (GB)
Title: Protective covering for iron or steel especially for use in gas purification plants
IPC: B01J19/02
Filed: 1952-05-20
Abstract: The surface of iron or steel is protected against corrosion by gases or vapours of the type normally encountered in coke gas purification plants by applying a thin coating of an aqueous paste of cement to the bare metal surface or to a previously formed protective layer, allowing to dry by evaporation, and consolidating the cement layer to an adherent protective coating in the presence of said gases or vapours.  The process is suitable for protecting parts, e.g. baskets, of gas purification plant which are subject to attack by hydrogen sulphide, cyanogen, or vapours of benzene, carbon disulphide, or petroleum.  The surface may be derusted by a jet of sand and then sprayed with an aqueous paste of cement and fine sand to form a coating of 0.5-3 mm. thickness.  Specification 301,440, [Class 55 (ii), is referred to.
Patent GB-130763-A (GB)
Title: Improvements in Injectors for Internal Combustion Engines.
Inventor: CHARLES LOUIS AUGUSTE
IPC: F02M67/12
Filed: 1918-08-07
Abstract: 130,763. Charles, L. A. Aug. 7, 1918. Regulating.-In engines of the Diesel type for aircraft, the injection-air and fuel valves are worked simultaneously by an adjustable cam the variable contour of which is a function of the quantity of fuel, the load on the engine, and the altitude of the engine above sea-level. As shown, the fuel valve 17 and air valve 29 are on the same spindle, which is worked by the sliding and rotating cam 34. The fuel enters at 18 and is induced from the nozzle 15 by highly compressed injecton air from the surrounding passage and carried into the cylinder through the valve 29.
Patent GB-1146465-A (GB)
Title: Photographic sensitising dyes
Inventor: GANDINO MARIO
IPC: C09B23/06
Filed: 1966-03-23
Abstract: 1,146,465. Benzimidazoles. FERRANTA S.p.A. 23 March, 1966 [21 May, 1965], No. 12848/66. Heading C2C. [Also in Divisions C4 and G2] 5 : 6 - Dichloro - 2 - methyl - 1 - (2 - pyridyl)- benzimidazole ethiodide is made by heating with ethyl iodide 5 : 6-dichloro-2-methyl-1-(2 -pyridyl)- benzimidazole obtained by reacting with powdered zinc, acetic anhydride and acetic acid 2 - nitro - 4 : 5 - dichloro - N - (2 - pyridyl)- aniline made by reacting 2:4: 5-trichloronitrobenzene with 2-amino-pyridine.
Patent GB-103451-A (GB)
Title: Improvements in and relating to Paper Binding Clips.
Inventor: ALEXANDER ALBERT EDGAR
IPC: B42F1/06
Filed: 1916-09-12
Abstract: 103,451. Alexander, A. E., (Baltzley, L. E.). Sept. 12, 1916. Clips, sheet-metal.-A paper clip comprises two spring members A, B each formed of a back-plate 10, 12 and a clamping-jaw 11, 13. The edges 14 of the plate 10 are formed as guides for the edges 15 of the plate 12, so that the jaws 11, 13 may be moved towards or away from one'another, while complete separation of the members A, B is prevented by the engagement of the parts 19, 21. The members A, B are held in their clamping position by the parts 16, 18, which may be disengaged by inserting a finger in the hole 22 and lifting the tongue 17.