baber/WOPTO huggingface dataset:
Patent GB-1392086-A (GB)
Title: Lenses
IPC: G02B13/08
Filed: 1972-03-29
Abstract: 1392086 Anamorphotic lens RANK ORGANISATION Ltd 28 March 1973 [29 March 1972] 14814/72 Heading G2J An anamorphotic objective system which is adjustable to vary the anamorphotic effect comprises a spherical lens 10 and two cylindrical lens units 11, 12 each comprising more than one lens. The cylindrical lens units 11, 12 are placed one each side of the spherical lens 10 and are each individually parfocal between their cylindrically active and cylindrically passive planes with respect to the object plane and the focal plane of the spherical lens 10. The lenses of units 11, 12 are relatively movable in the axial direction to maintain equality of focus between the active and passive planes during variation of the anamorphotic effect. As shown, each cylindrical lens unit 11 or 12 comprises a pair of cylindrical lenses, one convergent and one divergent, each lens having one cylindrical surface e.g. 1 1a, b and one planar surface e.g. 11c, d. The anamorphotic effect may be continuously variable by equal and opposite rotations of the cylindrical lens units and the whole system may be axially movable relative to the object plane to preserve the magnification in the cylindrically passive plane during such variation.
Patent GB-119302-A (GB)
Title: Improvements in the Method of Construction of Electric Furnaces of the Heated Coil Type.
IPC: H05B3/64
Filed: 1917-10-13
Abstract: 119,302. Kievits, J. E. P., and Kynoch, Ltd. Oct. 13, 1917. Resistance furnaces.-A wire resistance helix B is wrapped in paper C or the like before being embedded in refractory cement D. The paper is afterwards burnt off, air being blown through the helix to complete the combustion and remove residue, so that the inner surface of the helix is left bare. The helix may surround a silica muffle A or be applied to surfaces of other forms.
Patent GB-1097951-A (GB)
Title: A process for the manufacture of benzdiaz[1,4]epine derivatives
IPC: C07C233/00
Filed: 1965-04-08
Abstract: Compounds of the general formula <FORM:1097951/C2/1> (wherein R1 represents a halogen atom or CF3 group, R2 represents a C1- 7 alkyl group and the broken lines denote optional substituents) are prepared by reacting a compound of the formula <FORM:1097951/C2/2> (wherein X represents a Cl, Br or I atom) with ammonia gas in the presence of a solvent in which ammonia is less than 2% soluble on a weight-to-weight basis (at normal temperature and pressure) and cyclizing the resulting compound of the formula <FORM:1097951/C2/3> preferably after conversion to a salt.
Patent GB-1527853-A (GB)
Title: Double optical slide projector
IPC: G03B23/18
Filed: 1977-04-07
Abstract: 1527853 Double optical slide projectors FRANKE & HEIDECKE GmbH [trading as ROLLEI-WERKE FRANKE & HEIDECKE]  7 April 1977 [22 June 1976] 14897/77 Addition to 1437468 Heading G2J A double optical slide projector comprises projectors combined with a common magazine from which slides are taken to the projector gates and returned by changer mechanism. The projectors are parallel and movable, one to a forward position and one to a rearward position, alternately. The changer operates alternately with a full stroke to the further projection gate and a partial stroke to the nearer projection gate. The slide changer comprises a system of cam-operated levers which incorporates a slipping clutch and a stop arresting the mechanism when a partial stroke is required.
Patent GB-476728-A (GB)
Title: Improvements in or relating to sheet feeding devices
IPC: B65H5/00
Filed: 1937-05-28
Abstract: 476,728. Feeding sheets. SPIESS, G. May 28, 1937, No. 14904. Convention date, May 29, 1936. [Class 100 (i)] In a sheet-feeding device in which sheets separated from a pile bare fed forward to a machine by a belt c either in an overlapping stream or singly without overlap, the belt c is driven from a shaft e by means of variable gearing, which in the case of single feeding slows the sheets as they reach the front stops. When stream feeding occurs the belt c is also driven from the variable gear through a final pair of gears of a smaller ratic than for the single feed, and this permits the side gauges to be arranged further from the front stops than is the case when the drive for the overlapping feed belt is non-variable. The variable - gear drive is constructed of a wheel f carried eccentrically by a wheel g driven by the shaft e. The wheel f is geared to a wheel i and the axes of these wheels are connected by a link k and owing to the movement of the axis of the wheel f around the axis of the wheel g the axis of the wheel i oscillates in a circular path around the axis of a wheel l which receives a variable velocity. A link h connects the axes of the wheels i, l. The shaft of the wheel l is geared to the conveyer c by means of two trains of gears of different ratio, and by means of a slidable coupling either of the trains may be brought into gear to drive the belt quickly for single feed, or slowly for overlapping feed.
Patent GB-339926-A (GB)
Title: Process for obtaining concentrated sulphur dioxide
IPC: C01B17/60
Filed: 1930-05-15
Abstract: 339,926. Soc. of Chemical Industry in Basle. May 15, 1929, [Convention date]. Amine compounds.-Sulphur dioxide is obtained in a concentrated form from gases containing it by absorbing it in a mixture of water and an aromatic amine such as aniline and expelling the absorbed gas by heat. With lower concentration of sulphur dioxide in the absorbent the mixture remains liquid and the removal of gas can be conducted continuously on the countercurrent principle; at higher concentrations sulphite or bisulphite compounds of aniline begin to crystallize.
Patent GB-1028454-A (GB)
Title: Improvements in bottles or like containers
IPC: B65D1/06
Filed: 1964-04-10
Abstract: 1,028,454. Bottles. J. WAISBERG. April 10, 1964 [April 11, 1963], No. 15007/64. Heading B8D. A bottle or other container for poisonous substances has a blind upper end and an opening 19, Fig. 1 (not shown), at its lower end closed by a screw-on base 14 seating on a gasket 25. The bottle is weighted at its upper end 22 to unbalance it. The base 14 may have a left-hand thread. A cork 16 is fitted in the blind end. In a modification, Fig. 2 (not shown), the bottle has a plugged exit surmounted by a screw cap. The bottle may be of glass, and the base 14 of the same material or of one similar in appearance. A warning label may be placed on the upper end of the bottle under the cap.
Patent GB-1152158-A (GB)
Title: Improvements in or relating to Open Work Grille Structures
Inventor: ALTISSIMO MASSIMO
IPC: F24F13/08
Filed: 1968-03-28
Abstract: 1,152,158. Metal grid. ULMA S.pA. 28 March, 1968 [31 March, 1967; 8 March, 1968], No. 15017/68. Heading D1K. A grid comprises a series of parallel notched members 1 interconnected by a second series of "channel shaped" members 3 resiliently engaging the notches. The first series may be solid or "channel shaped." The second series are held in the notches 2 by parts, e.g. 3'a, 3"a engaging projections 6-7, or detents in the notches of the first series. Longitudinal movement of the second series may be prevented by milling or serrating one edge or by deforming the edges of the members into the channels of the first series at the intersection. In one embodiment, (Figs. 18-9, not shown) inturned edges (43,4) of the second series engage detents cut in a central boss (40) projecting into the notches cut across the bases of channel shaped first members. In a further embodiment (Figs. 20-26, not shown) the central bosses are deformed to closely engage and prevent movement of the second series. The members may be of metal, which may be plastics coated, or of plastics.
Patent GB-203033-A (GB)
Title: Improvements in escalators
IPC: B66B23/14
Filed: 1922-05-29
Abstract: 203,033. Baker, W. S. Graff-. May 29, 1922. Moving stairways.-In escalators of the kind in which the steps have four wheels, two wheels only, one at each side of a step, travel upon an inclined track at a time. The inner wheels c are mounted at the end of arms d bolted to the underside of the step frame and provided with bearings for the axles e of the outer wheels b. On the upward run the axle e of any step rests on the arm d of the step immediately above and the wheels c run on a track f. The axle engages a hook d<3> formed on the arm when the driving chain breaks. On the return run the wheels b run on a track g and the arms rest on the axles of the next step above. Lugs d<1> formed on the inner side of the arms bear against the hooks d<3> of the next step when the wheels are travelling on the arcuate tracks f<2>, f<3> at the ends of the escalator. Auxiliary tracks are provided for the previously disused wheels where the steps change from a stairway to a platform.
Patent GB-972726-A (GB)
Title: Improved hose clip
IPC: F16L33/10
Filed: 1962-04-18
Abstract: 972,726. Band clips. H. MULLER-NEUHAUS. April 18, 1962 [April 18, 1961], No. 15074/62. Heading E2B. A hose clip comprises one or more straps provided with co-operating slotted and reduced portions so as to be capable of being interlaced with the or each reduced portion engaging in the slot to form a loop surrounding the hose, the or each reduced portion being formed by two notches, one in each of the opposite edges of the strap and each being such that the width of each reduced portion perpendicular to the axis of the straps is at all positions along the length of the portions, greater than the difference between the full strap width and the sum of the greatest depth of penetration of the two notches into the strap measured perpendicularly to the axis of the strap. As shown the clip comprises a strap 1, a reduced portion of which, defined by notches 9, 9<SP>1</SP> is interlaced with a slot 8 so that the ends of the strap can be anchored to a nut 3 for an adjusting screw 4 by which tension in the strap may be adjusted. In another arrangement, Fig. 3 and 4 (not shown) two straps are used, each controlled by its own adjusting screw, the screws having limited adjustment towards and away from one another.
Patent GB-1334215-A (GB)
Title: Polymerisation of dienes
IPC: C08F36/04
Filed: 1972-03-30
Abstract: 1334215 Hydroxy-substituted diene polymers ATLANTIC RICHFIELD CO 30 March 1972 [5 April 1971 (2)] 15116/72 Heading C3P Polymers of 25-100 wt per cent of a C 4-12  conjugated diene and 0-75 wt. per cent of a C 2-12  alpha-olefinic monomer, which polymers have a number average M.W. of 400-25,000 and contain at least 1À8 terminal hydroxyl groups per average molecule, are obtained by polymerizing the monomer(s) in the absence of molecular oxygen, at a temperature of above 100 C. up to 200 C., and in the presence of (1) hydrogen peroxide catalyst, and (2) a liquid reaction medium having a solubility in water at 20 C. of less than 10 g per 100 ml. and which is selected from (a) trisubstituted orthophosphate esters having at least 18 carbon atoms and in which each substituent is a hydrocarbyl group optionally substituted by one or more inert radicals, and/or (b) saturated alicyclic monocyclic alcohols and ketones having 6-12 carbon atoms at least 6 of which are in the ring, the polymerization system having at least two liquid phases. Suitable reaction media include tricresylphosphate, tri-2-ethylhexylphosphate, cyclohexanol, cyclohenanone and mixtures thereof. Specific products mentioned are hydroxyl-containing polybutadiene and 70/30 or 75/25 butadiene/styrene as butadiene/acrylonitrile copolymers.
Patent GB-756027-A (GB)
Title: Process for the manufacture of fluorine-containing unsaturated aliphatic hydrocarbons
IPC: C07C17/23
Filed: 1952-06-16
Abstract: Fluorine-containing aliphatic hydrocarbons are made by reacting at least the theoretical proportion of finely-divided iron with a saturated aliphatic hydrocarbon - containing fluorine and at least two atoms of another halogen bound to vicinal carbon atoms in the presence of a solvent and at a raised temperature to eliminate at least 2 atoms of halogen (other than fluorine) from the saturated hydrocarbon.  Raised pressure may be used, e.g. by the introduction of nitrogen under pressure.  Pressures of about 10-200 atmospheres are mentioned.  Advantageously a small proportion of finely-divided zinc may be added so that the reaction starts at a lower temperature and the fluorine-containing unsaturated hydrocarbon formed produces the required pressure. The reaction is advantageously effected at the vapour pressure of the reactant at the reaction temperature. Temperatures of about 90-200 DEG , especially about 130 DEG  C., are indicated although with iron of high activity the temperature may be about 80 DEG  C. Advantageously, an excess of about 40 per cent of the theoretical quantity of iron is added.  The quantity of zinc added may be up to about 10 per cent of the theoretical.  When a small quantity of zinc is used less than the theoretical quantity of iron may be present but the total quantity of iron and zinc should be sufficient to remove at least 2 atoms of halogen from the saturated hydrocarbons.  Specified solvents are methanol, ethanol, propanol, isopropanol, butanol, isobutanol, benzyl alcohol and acetamide. Preferably, the solvent should be capable of dissolving the starting material and FeHal2 and be at least partially miscible with water. Chlorine may be eliminated from 1,2,3,4-tetrachloro-1,1,2,3,4,4-hexafluorobutane or 1,2-dichloro-1,1,2,3,3,3 - hexafluoropropane to form hexafluoro - butadiene and -propylene respectively, and bromine may be eliminated from the corresponding bromo compounds.  In examples, 1,1,2 - trichloro - 1,2,2 - trifluoroethane is treated with iron powder in (1) aqueous methanol and (2) methanol under nitrogen to produce trifluoro-chlorethylene, the addition of 5 per cent of zinc based on iron being optional in (2); in (3) 1,1,2,2 - tetrachloro - 1,2 - difluorethane is treated with iron and zinc in methanol under nitrogen to yield 1,2-dichloro-1,2-difluorethylene; (4) 1,1,2 - trichloro - 2,2 - difluorethane is treated with iron and zinc in ethanol under nitrogen to yield 1-chloro-2,2-difluorethylene; and in (5) 1,2-dichloro-1,2,3,3,4,4-hexafluorocyclobutane is treated as in (4) to yield hexafluorocyclobutylene.  If the last example is effected in methanol, 1-methoxy-pentafluorocyclobutylene is obtained as a by-product.
Patent GB-165803-A (GB)
Title: Improvements in trucks
IPC: B62B3/06
Filed: 1917-10-19
Abstract: 165,803. Stewart, J. C. Oct. 19, 1917. Hand - trucks. - In a hand-truck with a lifting frame or platform adapted to be run under the loads, the supporting-links for the lifting frame are pivoted directly upon both the steering and main axles. The steering - handle' is mounted in one of the supporting - link members whereby it raises and lowers the frame, and may be disposed at the end of the vehicle remote from the steering-axle with which it has actuating connections. The truck shown comprises the lifting frame A mounted by links V, V<2> upon the axles B, C. The links V are connected directly to a crossbar W of the frame A, and the links V<2> to the turntable E which supports the frame A upon a ball-bearing R'. The handle I is rotatable in a link member H connected to the crossbar W and the axle B and actuates the turntable E for steering the truck by cables M attached to the pulley L. A distance bar F extends between the two axles B, C, and has a vertical pivot connection G with the axle C to permit the steering movement. The frame A is lowered by raising the handle I and is locked in either position by a sliding sleeve S on the handle which can drop into holes T, T<2> in a slotted member U fixed to the frame A. The provision of flats on the handle adjacent to the member U prevents raising or lowering movement of the handle except when it is in the position corresponding to the normal position of the steering-axle. In a modification, the handle is mounted on the links V<2> so that it actuates the steering-axle directly.
Patent GB-1085577-A (GB)
Title: Improvements in or relating to presses for the manufacturing hollow open ended articles
Inventor: VLCEK JOSEF
IPC: B29C35/00
Filed: 1965-04-09
Abstract: 1,085,577. Moulding footwear. ZAVODY PRESN HO STROJ RENSTV  GOTTWALDOV N RODN  PODNIK. April 9, 1965 [July 9, 1964], No. 15211/65. Heading B5A. A press for making hollow open-ended articles of rubber or thermoplastics material, e.g. footwear, comprises two vertically slidable press yokes 6 carrying the sole or bottom part 21 of the mould, and horizontally slidable mould jaws 1, 1<SP>1</SP> moving toward fixed jaws 2, 2<SP>1</SP>, a base 15 for supporting the inflatable core 14 being centred between the jaws during closure, by a lazy tongs support mounting 17. The base 15 is withdrawable laterally. The part 21 is slidably adjustable horizontally for centring purposes. The mould parts are fitted with heating cheeks. Two upright driving screws are rotated through gearing by a motor 17, and have a screw threaded reaction with the cross beams which moves the upper yokes vertically; simultaneously mould jaws 1, 1<SP>1</SP> are moved horizontally under the impulse of the swivelling links 12.
Patent GB-593853-A (GB)
Title: Swivel-jointed article and method of producing the same
IPC: B22C9/06
Filed: 1945-06-15
Abstract: 593,853. Injection-moulding. PLASCO, Ltd. (Crown Fastener Corporation). June 15, 1945, No. 15240. [Class 87 (ii)] [Also in Groups XXII and XXV] A swivel of the type in which a headed pin 10, Fig. 3, fits within a socket 7 in an enlarged end portion of a loop 5 is made by moulding plastic material between similar dies 14, Fig. 1, with three cavities, two 15 and 16 in the shape of the swivel parts joined by neck 17 with tube 18 to nozzle 19 and the third 22 equivalent to the upper part of cavity 15. A core pin 21 with or without a bushing 8 of metal, fibre, or a different plastic, is inserted to form the aperture 7 and in the first operation an easily removeable dummy member is inserted in the cavity 22. Material is injected, a casting made, the pin 21 and the dummy removed and the moulded piece 5 moved down to the lower cavity 22. A second casting is made wherein the pin 10 of member 9 is formed within the socket of the first casting and contracts on cooling to give a swivel joint. The parts 17 and 18 may be broken away or neck 17 left if a chain is to be made. Alternate castings may be in different colours. One die has a member 23 to engage the loop 5 and prevent displacement of the casting when the core pin 21 is removed, Fig. 2 (not shown), and has aligning portions 24.
Patent GB-317880-A (GB)
Title: Improvements in or relating to pneumatic tyre casings
IPC: B60C15/02
Filed: 1928-05-24
Abstract: 317,880. India Rubber, Gutta Percha, & Telegraph Works Co., Ltd., and Avery, W. L. May 24, 1928. Tyre attachments to rims.-In tyre casings comprising oblique cords looped around anchoring-members in the tyre edges, and in which tha latter are formed with circumferential grooves to receive the edges of the rim flanges or separate endless rings, the cord-engaging portions of the anchoring-members 7 are located outside the grooves. In the construction shown, the anchoring-members 7 are C-shaped having outer limbs 6 on which the cords 4, 5 are looped,. and inner limbs 8 embedded in the bead-heels 9 to co-operate with the rim flange 2, Fig. 1, or with a separate wire ring 12, Fig. 5. The members 7 may be formed in pairs having their inner (or outer) ends connected by arms 10. The tyre casing may be of the kind described in Specification 19118/13 and may be built-up as described in Specification 753/03, on a core such as that described in Specification 10942/03.
Patent GB-1246180-A (GB)
Title: An improved torque limiter
Inventor: NEAL FRANCIS JOHN
IPC: F16D3/72
Filed: 1969-03-24
Abstract: 1,246,180. Torque-limiting devices. H. M. HOBSON Ltd. 28 May, 1970 [24 March, 1969], No. 15330/69. Heading F2E. A torque limiter includes a cam 10 constituting the input member, a plurality of rollers 11, a roller cage 12 constituting the output member, a torsion spring 14 connected between the input member 10 and the output member 12, and a fixed outer race 13. The torsion spring 14 may be a torsion bar, as shown, or a coil spring. Under normal conditions, when driving torque is applied, e.g. by an input shaft, to the input member, the output member is driven both by co-operation between cam 10, rollers 11 and the cage and by the torsion spring 14. In this phase the rollers are clear of the fixed outer race 13 (Fig. 2, not shown). When the driven mechanism (including an output shaft connected to the output member) develops excessive torque, the torsion spring 14 twists, thereby causing relative rotation of cam 10 and cage 12 to the positions shown in Fig. 3 in which the balls 10 are forced outwardly to lock in the wedge angles between cam 10 and fixed outer race 13, the input torque being thereby stalled. The device operates for both directions of rotation of the input member. The device is re-setting in the sense that if, after the input has been stalled, the torque of the output member falls to a predetermined level, it will revert to a straight-through drive. The device may be an independent unit, or incorporated in a driving unit or a driven unit. The torsion spring may be pre-loaded, so that all values of torque lower than the pre-load will be transmitted without twisting the spring.
Patent GB-1185757-A (GB)
Title: Electrical Circuit
Inventor: LOCKETT MICHAEL JAMES
IPC: C25B9/04
Filed: 1968-03-29
Abstract: 1,185,757. Mercury cathode electrolysis of alkali metal halides. MURGATROYD'S SALT & CHEMICAL CO. Ltd. March 7, 1969 [March 29, 1968], No. 15347/68. Heading C7B. A circuit for use in the electrolysis of alkali metal halides comprises a source of D. C. power 1, a plurality of electrolytic cells 2 in which mercury is used as the cathode and a plurality of fuel cells 4, in which the alkali metal/mercury amalgam is used as the fuel, wherein the electrolytic cells and fuel cells are connected alternately and electrically in series, and wherein a shunt, e. g. containing a variable resistor 3, is provided from the cathode of each electrolytic cell to the anode of the next but one electrolytic cell.
Patent GB-662805-A (GB)
Title: Improvements in or relating to metal casting
IPC: B22C1/18
Filed: 1949-06-09
Abstract: 662,805. Mould materials. FORD MOTOR CO., Ltd. June 9, 1949 [June 11, 1948], No. 15367/49. Class 83 (i). [Also in Group V] Material for making moulds, for casting intricate &c. metal articles with a surface which does not require machining, comprises a mixture of silica flour, calcium sulphate and the product obtained by heating together these two substances. The calcium sulphate may be ground as fine as the silica. Silica flour is mixed with 30 per cent of plaster of paris, moistened, allowed to set and heated to cause some silicate of calcium to be formed. After cooling, the material is ground to about the same fineness as the silica flour and mixed with an equal quantity of the untreated first mixture. Enough water is then added to produce a mouldable or pourable material and the mould or core is formed. Aluminium or metals of about the same melting point may be poured into such a mould dried at room temperature but for bronze &c. baking at 400‹ F. is required. Instead of using specially prepared heated mixture, ground used moulds may be employed with the unheated mixture.