baber/WOPTO huggingface dataset:
Patent GB-803242-A (GB)
Title: Optical focussing aid
Inventor: LOEBSTEIN HEINRICH
IPC: G02B27/40
Filed: 1953-12-01
Abstract: 803,242. Optical projection focusing aids. GNOME PHOTOGRAPHIC PRODUCTS, Ltd. Dec. 1, 1954 [Dec. 1, 1953], No. 33385/53. Classes 97(1) and 98(1) The focusing aid uses two test objects so disposed, relatively to the object plane, that, at the focusing setting which is the optimum for the projection of the object, the projected images of the test objects exhibit similar degrees of unsharpness. The test objects may be in planes parallel to, but on opposite sides of, the object plane so that each image is uniformly unsharp, the focusing adjustment being set so that they are equally unsharp. Alternatively, both test objects may pass through the object plane in intersecting directions so that sharply focused zones move along the objects in opposite directions during focusing, the adjustment being set so that these zones are level with each other. The two objects may be constituted, as in Fig. 1, by the parts of a slit lying in the parts 2, 3 of a doubly cranked plate 1, or by separate slits in intersecting directions in parallel plates. They may also be constituted by parallel sections of a loop of thread or, as in Fig. 2, by sections of a loop 6 which intersect in the object plane. They may also be in the form of parallel transparent plates which carry, in complementary areas, parts of a single pattern of intersecting lines so that, in the position of optimum focus the whole pattern appears equally unsharp. These plates may cover the whole lens field and may be used for testing the uniformity of the image formed by a lens or the equality of focal lengths of different lenses of nominally equal focal length. As applied to a photographic enlarger, the focusing aid may be attached to a removable negative carrier as described in Specification 728,935.
Patent GB-817382-A (GB)
Title: Improvements in or relating to steroids and the manufacture thereof
IPC: C07J1/00
Filed: 1956-11-01
Abstract: The invention comprises compounds having the general formula <FORM:0817382/IV (b)/1> wherein the lower alkyl group contains from 1-8 carbon atoms inclusive, and the preparation thereof either by subjecting a 2-lower alkyl - 11b ,17a ,20a  - trihydroxy - 21 - acyloxy-4-pregnen-3-one to oxidation to split off the 17-side chain and produce a 17-keto group by treatment with periodic acid, lead tetracetate, phenyliodoacetate or sodium bismuthate, or by oxidizing the corresponding 2-lower-alkyl-11b , 17a ,21 - trihydroxy - 4 - pregnene - 3,20 - dione 11b -acylates with chromic acid in acetic acid solution and then hydrolysing. Treatment of the 17-keto compounds with Me Mg Br in ether solution produces the corresponding 11-oxygenated 17a -methyl-testosterones.  Examples describe the preparation of 2-methyl- and 2-ethyl - 11b  - hydroxy - 4 - androstene - 3,17-dione, and alternative 2-alkyl starting compounds are mentioned.  2 - Methyl - 11b ,17a ,20a  - trihydroxy - 21 - acetoxy - 4 - pregnen - 3 - one is obtained by oxidatively hydroxylating 2 - methyl - 11b  - hydroxy - 21 - acetoxy - 4,17(20) - pregnadien-3-one.  In a similar manner the corresponding 2-ethyl, propyl, butyl, pentyl, hexyl, heptyl and octyl compounds are obtained.
Patent GB-838380-A (GB)
Title: Honing devices
IPC: B24B33/02
Filed: 1957-10-25
Abstract: 838,380. Magnetostrictive transducers. MICROMATIC HONE CORPORATION Oct. 25, 1957 [Jan. 31, 1957], No. 33419/57. Class 40 (4). [Also in Groups XXIII and XXXV] A honing device has electrical power-operated means for producing high-frequency relative oscillation between the tool and the work support. A workpiece 21, Figs. 1 and 2, is mounted on a fixture 23 supported on a table 24 which is moved upwardly so that a tool 1 enters the bore 22. The tool shaft 3 is rotated from a spindle 4 in a reciprocating head 5. The tool comprises stones 2 moved radially by cones 9, 10 on a rod 11 axially movable relatively to the tool by mechanism in the head 5. The shaft 3 and rod 11 are made of materials having magnetostrictive properties, one containing less than 79% nickel so that it expands in a magnetic field and the other containing more than 81% nickel so that it contracts in a magnetic field, whereby an additive effect is produced. Alternating or pulsating current is fed to a coil 6 from an amplifier 16 fed through a switch 20 by an adjustable frequency oscillator 15. The rapid vibration thus imparted to the stones 2 prevents them becoming glazed. In a modification, Fig. 3, the high - frequency oscillation is applied to the work-holding fixture 26 by a transducer 29. This has a housing 33 supported in a member 34 from which an armature 35 extends and is connected to a corner of the fixture 26. The armature 35 is secured, e.g. by brazing, to a laminated core 36 of sheets of nickel formed with a slot defining two legs about which are wound coils 40, 41 connected in series. The coils are fed by an amplifier connected to an oscillator. An opposite corner of the fixture 26 is supported by a member 32 similar to the member 34. Alternatively, the fixture 26, Fig. 5, may be supported by two transducers 29, 48, operated 180 degrees out-of-phase, e.g. by the use of a self-balancing phase inverter 49. In a further modification. Fig. 4, the workpiece 59 is mounted in a fixture 61 having a supporting leg 62 attached to the base 63. A transducer 64 is mounted horizontally on a vertical wall 65 of the machine, the armature 66 being attached at 67 to the fixture 61.
Patent GB-470155-A (GB)
Title: Improvements in or relating to wireless aerials
IPC: H01Q1/16
Filed: 1936-12-07
Abstract: 470,155. Aerials. KASTL, J., (trading as CASTELCO FABRIK FUR ELEKTRISCHE APPARATE UND METALLWAREN INHABER: J. KASTL). Dec. 7, 1936, No. 33466. Convention date, Dec. 6, 1935. [Class 40 (v)] [Also in Group XXXVI] A sheathed down-lead for a wireless aerial is clamped, sealed, and supported by the device shown. The downlead wire 2, covered by a sheathing 1, is clamped at 5 to a head 9, to which the aerial (not shown) is also connected through a conductive member 7, which may also serve as a support for the whole device. The outer sheath 7 is spread over the lower conical part of the head 9, and is held firmly in position by a sleeve 6. A protecting cap 8 covers the joint, and also grips the member 7.
Patent GB-297252-A (GB)
Title: Improvements in two stroke internal combustion engines
IPC: F01L5/06
Filed: 1927-12-12
Abstract: 297,252. Dehn, F. B., (Loud Slide Valve Engine Co., Inc.). Dec. 12, 1927. Two-stroke-cycle engines; cylinders, arrangement of ports in.-Combustible mixture admitted alternately to the lower ends of a pair of cylinders 19, 19<x> is compressed on the down-strokes of the pistons, into separate longitudinal compartments 32. 32x in a piston valve 24, and is afterwards admitted to the combustion chambers at the upper ends of the corresponding cylinders. The mixture is admitted to the pump chambers 29, 30 through ports 40, which are in continuous connection with the carburettor, and are uncovered by the pistons 18, 18x at the top of their strokes. This mixture is then compressed through cylinder ports 39 and valve port 35 or 36 into the corresponding valve compartment, and is later admitted to the corresponding combustion chamber 27 or 28 through valve port 33 or 34 and inclined cylinder ports 42 or 43, when the corresponding piston is near the lower dead-centre, being then again compressed on the up-stroke and fired, the exhaust escaping through terminal ports 41.
Patent GB-191931-A (GB)
Title: Improvements in gas heating stoves
IPC: F24C3/04
Filed: 1921-12-14
Abstract: 191,931. Brett, C. G. Dec. 14, 1921. Gas fires; radiants.- In an incandescent gas fire the fireclay radiants 8, having a lattice structure at the front and projections 10 on the rear inner surface, are provided with small perforations in the top and back for the escape of combustion products and supplied, at their lower ends, with a mixture of gas and air delivered through small holes in a burner. This burner, Fig. 3, is formed of two parts 1, 2 bolted together and enclosing a perforated diaphragm 3, the upper member 2 being formed with spigots 9, each fitting into the lower end of a radiant 8 and being provided with a number of small holes 7.
Patent GB-389193-A (GB)
Title: Improvements in or relating to incandescent gas burners
IPC: F23D14/30
Filed: 1931-12-04
Abstract: 389,193. Incandescent gas burners. SOUTH METROPOLITAN GAS CO. and CHANDLER, D., 709, Old Kent Road, London. Dec. 4, 1931, No. 33676. [Class 75 (i).] A venturi or mixing tube 1 is secured by a nut 3 in a bush 2 of porcelain or other heatinsulating material on which is screwed a tube 4 of similar material carrying a preferably fire-clay nozzle 5 adapted to support a mantle. The tube 1 and the bore of the bush 2 are of D-shaped section to prevent relative rotation. The corona 6 is clamped between a washer 7 and a flange 8 on the bush, the latter being provided with projections which engage slots in the corona.
Patent GB-620730-A (GB)
Title: Improvements in or relating to induction heating method and apparatus
IPC: H05B6/40
Filed: 1946-11-13
Abstract: 620,730. Induction heating apparatus. BUDD CO. Nov. 13, 1946, No. 33687. Convention date, Dec. 14, 1945. [Class 39(iii)] An indication heating head for workpieces having irregular surfaces has hollow, liquid cooled coils 3 and 4 wound on a hollow iron core 2, constructed of wedgeshaped plates 5. High-frequency current is supplied to each coil, in the same direction, from a reciprocating and rotating arbor 7 having mutually insulated conductors 8 and 9. Two or more cores, radially spaced may be used, and the number of coils on each core may be increased.
Patent GB-911967-A (GB)
Title: Sealing means for a rotary and radially movable shaft
IPC: F16J15/38
Filed: 1961-09-20
Abstract: 911,967. Stuffing-box substitutes. GOETZEWERKE F. GOETZE A.G. Sept., 20, 1961 [Sept. 24, 1960], No. 33722/61. Class 122 (5). A seal for a shaft 2 that rotates about its axis 6 and also about a parallel axis 7 comprises a ring 3 carried by the shaft for rotation therewith and having a sealing face bevelled off as at 3a on the side remote from the fluid to be sealed and pressed against a surface 1b normal to the axis of the ring. As shown, the shaft 2 is a stirrer shaft and the ring 3 is sealed thereto by an 0-ring 5 and pressed by a corrugated spring 4 against the surface 1b of the floor 1 of the stirrer vessel, the axis 7 being the axis of the aperture 1a in the floor.
Patent GB-833257-A (GB)
Title: Methods and tools for making socket type screws
Inventor: ANSINGH CARL HERMAN
IPC: B21K1/46
Filed: 1956-11-05
Abstract: 833,257. Making socket head screws. ROBERTSON MFG. CO. Ltd., P. L. Nov. 5, 1956, No. 33759/56. Class 83 (4). A punch for forming a squaresection socket in a socket head screw has a frusto-pyramidal portion 21 terminating in a conical end portion 22. Elliptical wear areas 33 are formed between the two portions. An upper frusto-pyramidal portion 23 is also provided. The sides 25 are inclined at approximately 3 degrees to the punch axis and the conical portion 22 forms an angle of approximately 56 degrees with the axis. A comparison is made between the punch of the invention and that used in the prior art. The Specification also claims a method of forming a socket using the punch.
Patent GB-759387-A (GB)
Title: Improvements in and relating to pipe joints
IPC: F16L21/025
Filed: 1953-12-04
Abstract: 759,387. Pipe joints. MORGAN, H. D., and STANTON IRONWORKS CO., Ltd. Nov. 23, 1954 [Dec. 4, 1953], No. 33818/53. Classes 99(1) and 99(2). A non-ferrous pipe joint, e.g. for concrete pipes, embodies a pair of spaced resilient packing rings f, g, defining an annular space h into which air or liquid under pressure can be introduced to fill the annular space h in order to test the fluid tightness of the joint, the end of one pipe being formed as a spigot with two conical portions c, d, co-operating with corresponding conical portions a, b, in a socket on the other pipe, so that the rings f, g are rolled over the portions c, d, into their sealing positions when the spigot is forced into the socket. Either the spigot portion or the socket portion has cast therein one or more screw threaded sleeves e leading into the annular space h. To test the completed joint the space h is filled with water under pressure through a pipe i connected to one of the sleeves e at j or through a hole in the socket, a second pipe i<SP>1</SP> being opened temporarily to permit the displaced air to escape. Alternatively the pipe i may supply compressed air for testing. After testing, the space h may be kept full of water under pressure to prevent seepage of air through the joint for example when the pipes are used to convey gas or water at less than atmosphere pressure. Cement grout may be introduced into the space h after the joint has been tested.
Patent GB-1122405-A (GB)
Title: Improvements in or relating to folding apparatus in rotary printing machines
IPC: B65H45/16
Filed: 1965-08-06
Abstract: 1,122,405. Folding paper. SCHNELL PRESSEN KOENIG & BAUER A.G. 6 Aug., 1965 [12 Aug., 1964], No. 33857/65. Heading B6H. A folding-apparatus for sheets of variable size in a rotary printing press is provided with a folding-cylinder consisting of a gripper part 1, a folding blade part 2 and a gripper control cam for the grippers on the gripper part. The gripper part 1 is driven by a shaft 3 to which it is fixed, from a drive-shaft 8 through gearwheels 9, 5. During normal operation of the machine, the folding blade part 2 is driven from the shaft 3 through a shifting clutch 4 and a sleeve carrying the part 2, and the cam is driven from the gear-wheel 5 through a gear 13, shaft 14, shifting clutch 15 and gears 16, 12. For adjustment of the part 2 and the cam angularly relatively to the part 1 while the machine is running, the clutches are disengaged. The part 2 is driven from the shaft 8 through a planetary gear drive 10, gear 11 and gear-wheel 7 on the sleeve, and the cam is driven from the gear 11 through a gear-wheel 11, planetary drive 18, gear-wheels 19, 20 and the gear 12, the planetary drives being adjustable.
Patent GB-1390090-A (GB)
Title: Recovering anhydrous acrylic acid
IPC: C07C51/48
Filed: 1972-07-20
Abstract: 1390090 Anhydrous acrylic acid BADISCHE ANILIN- & SODA-FABRIK AG 20 July 1972 [21 July 1971] 33946/72 Heading C2C Anhydrous acrylic acid is recovered from the gas obtained by catalytic oxidation of propylene and/or acrolein by counter-current scrubbing of the gas with a liquid hydrophobic solvent which is a hydrocarbon or an ether or mixtures thereof, and boils at above 170 C., followed by conventional treatment of the solution to recover the acid. The pressure and temperature are chosen to avoid the formation of an aqueous phase and the mixture of solvent and acid is treated countercurrently with a stripping gas and the acrylic acid is distilled off from the liquid discharged and the solvent mixture reused for absorption. Solvents used may be middle oil fractions of paraffin distillation, diphenyl ether and diphenyl. Examples are described using an absorber column (2) with reaction gas inlet (1), solvent inlet (5) from which the acrylic acid and solvent is discharged to desorber (9), a packed or tray column, through which stripping gas is blown (10). The liquid discharge (14) is distilled (15) or doubly distilled (19) and (15), to yield pure acrylic acid at (16). The liquid discharge from (17) is distilled to remove maleic anhydride (23) and directly recirculated or further purified (25) with cracking or removal oligomers of acrylic acid (27) and recirculated (26).
Patent GB-1490444-A (GB)
Title: Multi-core writing implement
IPC: B43K24/16
Filed: 1975-08-15
Abstract: 1490444 Writing appliances ANCOS CO Ltd 15 Aug 1975 [22 Aug 1974] 34108/75 Heading B6P Writing cores 20a, 20b, 20c are selected and projected by a reciprocating rotatable body 60, which acts on push-rods 25a, 25b, 25c as it is moved backwards and forwards between reciprocating toothed ring 50 and spring 65, engaging alternately on forward and rearward portions of a cam track 70 in the wall of casing 12. The teeth on the ring 50, radially and axially protruding portions on the body 60 and the cam track 70 co-operate to rotate the body 50 at each reciprocation, so that a shaped body on it engages a different push-rod each time. Twocore and three-core versions are described. The writing cores may have either ball or fibre tips, and may be replaceable.
Patent GB-1433344-A (GB)
Title: Balanced tensilized polyethylene terephthalate film
IPC: B29C48/08
Filed: 1973-07-18
Abstract: 1433344 Polyethylene terephthalate film CELANESE CORP 18 July 1973 [19 July 1972] 34123/73 Heading B5B A biaxially oriented polyethylene terephthalate film having substantially equal tensile strengths in both longitudinal and transverse directions in the range of 38,000 to 50,000 p.s.i. and substantially equal tensile strengths at 5% elongation in the range 16,000 to 25,000 p.s.i., is made by extruding a melt of the polymer on to a cooled casting drum, longitudinally stretching the film 3À0 to 5À0 times, transversely stretching 3-2 to 5À2 times subject to the limitation that the transverse stretch ratio is greater than the longitudinal stretch ratio and heat setting the film at a temperature of 180 to 250 C. The film preferably has an intrinsic viscosity of 0À64 to 0À8 deciliter/gram in orthochloro phenol at 25 C., a modulus in excess of 600,000 p.s.i. and a breaking elongation of 600,000 p.s.i.
Patent GB-1400062-A (GB)
Title: Closure cover with pressure relief means
IPC: B60K15/04
Filed: 1972-07-21
Abstract: 1400062 Radiator cap BLAU KG FABRIK FUER KRAFTFAHRZEUGTEILE 21 July 1972 [5 Aug 1971 30 Aug 1971] 34175/72 Heading B8T [Also in Divisions F2 and F4] In a closure cover 1, e.g. a radiator cap, having first and second valve members 8<SP>1</SP> and 6 adapted to open automatically above and below predetermined pressures, the valve members 8<SP>1</SP> and 6 are normally spring urged via a compression spring 7 to a position where they respectively close apertures 5<SP>11</SP> and 5<SP>1</SP> in a partition 5. The valve member 8<SP>1</SP> is located at one end of a rod 8 passing freely through the aperture 5<SP>11</SP>; the other end of the rod carries a base-plate 9. The compression spring 7 extends between the base-plate 9 and the underside of the valve member 6. Bayonet fastenings 3<SP>1</SP> on a spring urged bridge member 3 extend outwardly through diametrically opposed cut-outs 2<SP>1</SP> in a pot-shaped housing 2. A sealing ring 10 is disposed between the flanged edge 2<SP>111</SP> of the housing 2 and the partitition 5. Fluid may enter or leave the closure cover via peripheral openings 5<SP>111</SP> in the partition 5 and openings 2<SP>IV</SP> surrounding the flanged housing 2. In an alternative embodiment (see Fig. 2, not shown) two compression springs (7<SP>1</SP>, 7<SP>11</SP>) are utilized.
Patent GB-1016772-A (GB)
Title: Inner tube
Inventor: WHITE LEONARD WILLIAM
IPC: B29D23/24
Filed: 1962-10-06
Abstract: An inner tube for a pneumatic tyre is made by a process which includes the step of cutting a length of tubing, the ends of which length lie at an angle with the transverse section of the rubber tubing.  The ends are then pressed together in a heated condition to form a splice and the thus-formed tube is vulcanized.
Patent GB-605222-A (GB)
Title: Improvements in cigarette cases
IPC: A24F15/20
Filed: 1945-12-18
Abstract: 605,222. Cigarette cases. CARTWRIGHT, H. C Dec. 18, 1945, No. 34238. [Class 18] A case for cigarettes comprises a partitioned holder in which the cigarettes stand on end and a cover member having side legs integral with a cover portion, the legs being attached by a pivot or hinge to the base of the holder. In one form, the holder 1, which may contain two rows of cigarettes 3, has two covers 7 attached each to two legs 4a, 5a, the legs being joined at the base by a flexible strip 6. The base of the holder is grooved to receive the strip 6. The covers 7 are bevelled at their lower edge so that they may lie against the upper triangular section of the holder and form with it, when closed, the sides of the case. In another form containing a single row of cigarettes, the top of the holder slopes from one side above the cigarettes to the other side at a lower position. A cover as described above, has legs pivoted at the base of the holder, each by a spring strip which returns the cover to the holder after opening and retains it in a closed condition.
Patent GB-1112605-A (GB)
Title: Improvements in and relating to sealing gaskets and joints
IPC: F16L37/084
Filed: 1965-08-11
Abstract: 1,112,605. Seals; pipe joints. V. L. BARR. 11 Aug., 1965 [20 Aug., 1964], No. 34416/65. Headings F2B and F2G. A seal comprises a resilient annular band and stiffening means which provide rigidity transversely of the band while allowing the band to expand and contract in a radial direction. The band may be made of rubber or plastic and the cross-section circular, oval or oval with a flat face 63. The stiffening means may be made of metal or plastic and formed by coiled or bent wire, Figs. 3 and 5 (not shown) or rods 35 joined by a strip 36. When in position around a spigot 14 of a pipe joint, outward movement of the spigot causes the seal to roll and provide a wedging action. The spigot may be provided with seal-retaining groove (48), Fig. 2 (not shown), or a shoulder (78), Fig. 9 (not shown). In another embodiment, Fig. 10 (not shown), the seal is urged into a wedging position by a gland nut (100). Fig. 11 (not shown) illustrates a sleeve which is used for releasing the seal from the spigot when dismantling the joint.
Patent GB-1358014-A (GB)
Title: Electromagnetically operated fastener driving tool
IPC: B25C1/06
Filed: 1972-07-24
Abstract: 1358014 Fastener driving tools E MULLER 24 July 1972 [20 Aug 1971 2 June 1972] 34448/72 Heading B4C In an electromagnetically operated fastener e.g. staple or nail driving tool a capacitor 23 is disconnected from an A.C. source and discharged through windings 11 of an electromagnet to attract armature 31 so as to effect via spring biased lever 33 the power stroke of a fastener driver 35 upon actuation of a trigger operated switch 14. The tool comprises a housing 26 of plastics material which encloses an iron frame 41. The winding 11 is carried by an insulating sleeve 44 which is securely located within the frame. Rod 32 carried by the armature 31 is of non-magnetic material, e.g. nickel - manganese - steel alloy and includes a hardened insert 49. Removable sides (52) (Fig. 3, not shown) of the housing part 40 permit access to the electromagnet. The winding 11 may be of aluminium, aluminiumcoated wire, or aluminium foil, layers of which are insulated from one another by an oxide coating, e.g. aluminium oxide.
Patent GB-1438403-A (GB)
Title: Vehicle carrying a gun
IPC: F41A27/24
Filed: 1973-07-19
Abstract: 1438403 Endless-track vehicles BOFORS AB 19 July 1972 [25 July 1972] 34545/73 Heading B7H [Also in Division F3] A vehicle, which may be a tracked type, has a gun pointing forwardly of the vehicle and pivotally mounted in a trunnion 5 which is positioned at the rear of the vehicle, road wheels 4, each of which is carried by a pivotable arm 9 and which are movable from their positions shown in Fig. 1 to their positions shown in Fig. 2, and means for effecting the movement of the wheels towards and away from the vehicle, the pair of rear wheels 4 each being provided with one of said means. The latter comprises a lever 10 which connects the respective arm 9 to the piston-rod of an hydraulic piston and cylinder device 11. Tension of the track is effected by a piston and cylinder device 13, via a wheel 12.