baber/WOPTO huggingface dataset:
Patent GB-322973-A (GB)
Title: Improvements in free wheel clutches
IPC: F16D41/06
Filed: 1929-03-13
Abstract: 322,973. Wassell, D. G. March 13, 1929. Clutches, free-wheel.-A free-wheel clutch effect is produced by a lever b seated in a recess in a driving-member a, and in a shoe g lying in a channel in a driven member e, and formed with offset studs c engaging shoes d carried in the channel. In the driving direction, the lever presses the shoe g into contact with the driven member, and by a cam action the shoes dare pressed into contact with the driving-member a. For driving in both directions with the possibility of free-wheeling, two similar clutch members are employed with means for rendering one of the clutches inoperative, or, alternatively, a doublecam is used with a stop to render one of the cams inoperative.
Patent GB-846519-A (GB)
Title: Hard, rigid polymeric products of high impact resistance
IPC: C08F265/06
Filed: 1958-03-14
Abstract: A hard, rigid polymeric product having an Izod notch impact strength of at least one foot pound per inch of notch is formed by bulk polymerizing, for a total of 100 parts, a solution of 25 to 45 parts of a homo- or co-polymeric methacrylic ester or methyl alpha-chloroacrylate having a heat distortion temperature above 65 DEG C. in 75 to 55 parts of an acrylic ester or a mixture thereof with other acrylic or methacrylic compounds, which ester or mixture thereof has a bend-brittle temperature below 0 DEG C. when polymerized per se.  Methacrylic ester polymers specified are those of methyl, trichlorocthyl, isobutyl, cyclohexyl and isobornyl methacrylates and mixtures thereof with minor amounts of other acrylic and methacrylic esters, e.g. ethyl acrylate. Acrylic esters specified are the C2-C8 alkyl esters which may be used alone or in admixture with minor amounts of other acrylic and methacrylic compounds, e.g. methacrylic acid, methyl, ethyl butyl and benzyl methacrylates, trichloroethyl, phenyl and benzyl acrylates and neopentyl diacrylate. Polymerization may be effected by heating in the presence of a catalyst such as acetyl or benzoyl peroxide, tert. butyl hydroperoxide and azobisisobutyronitrile.  Sheets may be formed by polymerizing the monomerpolymer mixture between sheets of glass or regenerated cellulose.
Patent GB-1105703-A (GB)
Title: Improvements in self-tapping screws
Inventor: COOPER FREDERICK WILLIAM
IPC: F16B25/10
Filed: 1965-02-26
Abstract: 1,105,703. Self-tapping screws. G.K.N. SCREWS AND FASTENERS Ltd. 27 April, 1966 [26 Feb., 1965], No. 8332/65. Heading B3N. A self-tapping headed screw has a hardened rolled thread 11 thereon, Fig. 1, and a point 12 of non-circular cross-section, having a major and a minor axis. The cross-section may be of diamond, or elliptical form, and at the two opposed positions 17 on the major axis, incomplete portions of thread are provided so that their leading faces (19), Fig. 3 (not shown), bite into a hard surface surrounding the hole into which the screw is to be driven.
Patent GB-146927-A (GB)
Title: Improvements in means for securing articles to be carried in pockets or the like
IPC: A45C13/18
Filed: 1920-03-22
Abstract: 146,927. Kloss, E., and Glanz, E. July 4, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Pockets, retaining pocketbooks &c. in.-In a device for securing pocket-books &c. in pockets, the arm a, Fig. 2, is introduced into the pocket-book, whilst the arm c passes over the edge of the pocket and is secured by the arm e of the lever f, pivoted at d, being pressed against the outer side of the pocket. The lever f is locked in its clamping position by the ]ever g, pivoted at h to the arm c. In a modification, Fig. 4, the clamping lever k is pivoted on one arm of a spring l, the lower end of which acts upon the short arm of a lever m, pivoted at n on the arm c. The lower end of the lever k has a tappet o, under which a part of the upper end of the laterally moving lever m snaps to secure the lever k in its clamping position.
Patent GB-268385-A (GB)
Title: Apparatus for the purification of impure solutions of caustic soda and the like on osmotic principles
IPC: C01D1/38
Filed: 1927-03-28
Abstract: 268,385. Cerini, L. March 26, 1926, [Convention date]. Addition to 265,126. Diffusion apparatus for liquids. - The diaphragms employed in the parent Specification are constructed of fabrics of cotton or other vegetable fibres treated, without tension, with a concentrated solution of caustic soda. The solution may have a concentration of 38‹ BÚ, and the treatment is carried out at a temperature of about 40‹ C. for about 24 hours.
Patent GB-725190-A (GB)
Title: Automatic synchronization
IPC: H04N5/073
Filed: 1953-03-27
Abstract: 725,190. Television. STANDARD TELEPHONES & CABLES, Ltd. March 27, 1953 [April 22, 1952], No. 8524/53. Class 40 (3). Synchronizing signals derived from an independent source are automatically supplied to television monitoring apparatus to synchronize the operation thereof when the signals being monitored do not contain synchronizing signals. As shown in Fig. 1, the output of a source 9 of video signals to be monitored (which may comprise a composite video signal including blanking and synchronizing signals or, if the signals are derived directly from a camera, only the video signal and blanking signals) is fed to a separating circuit 5 which supplies (via a pulse width discriminator 6) the synchronizing signals (if they are present) or the blanking signals if synchronizing signals are absent) to a circuit 7 in which a D.C. bias, the magnitude of which depends on whether the output of circuit 5 comprises synchronizing or blanking signals, is generated. The output of circuit 5 is also fed to a line/frame synchronizing signal separator circuit 8 which is so controlled by the bias output of circuit 7 that if synchronizing signals are present they are passed to the monitor scanning circuits via amplifiers 3 and 4 whilst, if synchronizing signals are absent, the amplifiers 3 and 4 are " gated " by the output of circuit 7 to pass horizontal and vertical synchronizing signals from sources 1 and 2.
Patent GB-1549588-A (GB)
Title: Alkaline button cell
IPC: H01M50/166
Filed: 1978-03-03
Abstract: In a housing (4), sealed by a cover (3), a positive electrode (1) and a negative electrode (2) are arranged. The two electrodes are separated from one another by a separator (8). The positive electrode contains electrolytic  gamma -manganese dioxide, from 6 to 16% by weight of graphite powder and poly(vinylpyrrolidone), and the negative electrode contains metallic cadmium and has a porosity of 55-75%. The cover is elastic and consists of nickel-plated spring bronze having a Vickers hardness of from 100 to 150. To improve the shelf life, the cover (3) is inserted in the housing (4) with mechanical prestress, a sealing ring (5) and a washer (6) made of "Teflon" being located in between. <IMAGE>
Patent GB-127893-A (GB)
Title: Improvements in or relating to Ordnance Breech Mechanism.
Inventor: DAWSON ARTHUR TREVOR
IPC: F41A3/10
Filed: 1917-06-15
Abstract: 127,893. Dawson, Sir A. T., and Buckham, Sir G. T. June 15, 1917. Ordnance breech mechanism. - Relates to mechanism of the rectilinearly sliding block type for ordnance of small calibre, and consists in providing a breech-block engaging with the outer surface of the breech-end of the gun. Fig. 2 shows a vertically sliding block A<1> with forwardly projecting flanges a<1> formed with internal fins engaging corresponding grooves on the outside of the breech-end of the gun A. The breech-block is operated by a lever B pivoted at b to the block and having a pin B<x> engaging a groove A<x> in the gun. The block is retained in the closed position shown, by the passing of the pin B<x> over the deadpoint position. Downward movement of the block is arrested by the contact of a spring stop on the lever with a projection on the block, the spring tending to lift the block slightly so that it partly overlaps the cartridge chamber and acts as a cartridge-retainer.
Patent GB-1333366-A (GB)
Title: Packing for devices such as compressors or pumps
IPC: F16J15/16
Filed: 1972-02-25
Abstract: 1333366 Seals DRESSER INDUSTRIES Inc 25 Feb 1972 [29 March 1971] 8808/72 Heading F2B A packing arrangement for the plunger 12 of a pump or compressor comprises a first member 20 having a pressure-responsive lip 44, 54 thereon which sealingly engages an end face 16, 28 of a second member 14, 26, a lubricant passage 22, 24 in one of the members communicating with a source of lubricant under pressure, a groove 68, 62 in the lip or end face in communication with the passage 22, 24; the lip 44, 54 being urged against the end face by the compressor pressure and moved out of contact therewith to allow lubricant to pass therebetween on to the plunger when the lubricant pressure exceeds the compressor pressure by a certain amount. The member 14 is a cylinder flange and 20 and 26 are packing members fitted in the cylinder 10. Grooves 64 and 66 connect grooves 62 and 68 with lubricant passages 24 and 22 respectively. Seal rings 36, 38, 46, 48 are housed in counterbores in the packing members. Lip 54 engages a similar lip 60 on member 26. In use, during the compression stroke the lips are held in sealing contact by the compressor pressure but during the intake stroke the lubricant pressure is sufficient to lift them and allow lubricant to flow past the seal rings on to the plunger.
Patent GB-481784-A (GB)
Title: Improvements in safety headgear
IPC: A42B3/14
Filed: 1937-03-25
Abstract: 481,784. Safety head-wear. TRIGGS, W. W. (Strauss, A. A.) March 25, 1937, No. 8864. [Class 63] Head-wear for miners and the like comprises rigid crown and brim portions 8, 7, respectively, and a frusto-conical or funnel-shaped head band support 5 secured to or adjacent the brim and at its upper edge to the top marginal portion of a head-band 9. Ventilation may be provided by openings 14 in the member 5. In a modification spacing blocks are provided between the base of the member 5 and the under surface of the brim, forming ventilation channels therebetween. In another modification, the 'intermediate member 5 is substituted by a member 20 carried by the lower edge of the crown. The members 5, 7, 8 may be of hard moulded fibre, and the member 9 of buckram or belting. Alternatively, the member 5 may be of stout cloth.
Patent GB-102339-A (GB)
Title: An Improved Holder for Wire Staple Belt-fasteners.
Inventor: YETTON JOHN
IPC: F16G3/04
Filed: 1916-06-26
Abstract: 102,339. Yetton, J., and Brockett, W. E. June 26, 1916. Stapling, hand-tools for.- A holder for wire staple beltfasteners comprises a troughshaped strip of metal having sides 3 with corrugations 5 and a bottom 2 with slots 6. A pin 7 keeps the fasteners in position when the holder is acting as a carrier and when the fastenings are being secured to the end of a belt.
Patent GB-390324-A (GB)
Title: A process for making positives and negatives from printing forms without the use of photography or photographic apparatus
IPC: G03F1/00
Filed: 1932-03-29
Abstract: 390,324. Photographic processes ; pictures. MULLAN, E. P., 105, Bryn Mawr Avenue, Bala, Pennsylvania, U.S.A. March 29, 1932, No. 8985. [Class 98 (ii).] Positives or negatives are produced non- photographically by coating a paper &c. base 9, Fig. 5, with a solution of dextrin and printing a suitable design 11 upon such coating 10. The print 11 is dusted with lampblack &c., and after cleaning with a wad of absorbent cotton, the design is coated with a pyroxylin solution to form a light-transmitting film 12 which may be further strengthened with a protective coating 13 of rubber and a further coating 14 of pyroxylin. If the base is not sufficiently light-transmitting, the completed positive or negative is stripped therefrom by soaking in water and is then mounted upon a celluloid, glass, or other suitable light-transmitting base. The design 11 may be printed upon the pyroxylin film 12. In a second method, Fig. 8, the design is printed upon either coating 10 or 12 in printing ink and is then flowed or sprayed with a solution of lampblack and gum arabic to produce an opaque background 17, after which the design 18 is removed with benzol and the negative is then coated in turn with films of rubber and pyroxylin.
Patent GB-214252-A (GB)
Title: Improvements in or relating to friction gears
IPC: F16H15/40
Filed: 1924-04-09
Abstract: 214,252. Knoller, E. April 10, 1923, [Convention date]. Friction gearing with twin or like intermediate rollers is modified so that the rollers move automatically to equalize the load among themselves. Two double-conical rollers 18, 19 gear with a pair of coned discs 16, 17 and a. flat disc 20. The rollers are supported on separate inclined pivoted links 26 leaving the rollers some degree of free movement. The rollers may be spherical. In one form, a disc is divided radially into segments which have a small relative axial movement.
Patent GB-396659-A (GB)
Title: Improvements in or relating to dredgers for dredging powder-like or granular materials
IPC: A47G19/24
Filed: 1933-03-24
Abstract: 396,659. Powder distributers. BONDA, H. J., 46, Boompjes, Rotterdam, Holland. March 24, 1933, No. 9000. Convention date, March 29, 1932. [Class 18.] In a distributer for salts, spices, &c. provided with discharge openings in the lid 4 which openings can be closed by pins 12 on a support 11 axially movable with respect to the lid, the pin support is axially slidable under spring action and also rotatable on a stud 6 on the outside of the lid. The pin support is pushed downwards by a spring arranged between a nut on the end of the stud 6 and the inner end of a recess 7 in the support 11. To pour out the contents of the distributer, the support 11 is raised to lift the pins out of the discharge openings and then given a slight turn so that the pins are out of register with the openings. The pins and discharge openings may be arranged in a circular or part-circular fashion; and the pins are preferably conical and have hook-shaped ends. The lid is screwed on to the neck of the distributer, a packing ring 3 being interposed.
Patent GB-715751-A (GB)
Title: Improvements relating to electric socket connectors
IPC: H01R13/11
Filed: 1951-04-17
Abstract: 715,751. Two-part couplings. YOUNG, S. G. July 15, 1952, [April 17, 1951.] No. 9001/51. Class 38(1). A socket contact comprises a cylindrical terminal post 1, Fig. 1, having an outer portion cut away to form a seating 6 for a plug pin 7, and a spring 4 embracing the post i and being shaped to embrace the pin and urge it against the seating. The shape of the seating is such as to allow play to the pin. The contact is mounted on an insulating base by passing an extension 11 of the post i through an aperture in the base and spinning it over. Fig. 8 shows a modification wherein the ends of the spring 17 terminate adjacent the pin, a hole being provided in the spring for the terminal screw 3. A socket connector incorporating contacts according to the invention is shown in Fig. 5, the depth of the body 10 being no greater than the length of the longest plug pin 15-
Patent GB-703149-A (GB)
Title: Improvements in or relating to radomes of aircraft
Inventor: EVANS JAMES DEREK
IPC: B64D7/02
Filed: 1950-04-13
Abstract: 703,149. Aircraft radomes. BLACKBURN & GENERAL AIRCRAFT, Ltd. April 11, 1951 [April 13, 1950], No. 9118/50. Class 4 In an aircraft radome 2 which projects beyond the fuselage, straps 4 are formed on the radome surface perpendicular to the line of flight and to the rear of the section of maximum width.
Patent GB-510977-A (GB)
Title: Improvements in and relating to overall chains or girdles for road vehicle wheels
IPC: B60C27/08
Filed: 1938-03-25
Abstract: 510,977. Wheel tyres. KENNEDY, D. S. March 25. 1938, Nos..9190 and 21554. [Class 144 (ii)] Non-skid devices of the kind described in Specification 465,639 are fitted with protecting- means arranged between the twisted metal tread-bars d and the tyre. In the form shown in Fig. 1, plates a arranged to underlie the bars d are welded to the side-bars c of the shoe. In the form shown in Fig. 5, rods a<2>, which may be of plain or twisted form, are arranged fore-and-aft of the bard. Figs. 11 and 12 show a modification in which rods a<1> are combined with a main protecting-plate a <5>. Specification 361,673 also is referred to.
Patent GB-480406-A (GB)
Title: Torque measuring wrench
IPC: B25B23/142
Filed: 1937-03-31
Abstract: 480,406. Wrenches. AUTOMOTIVE MAINTENANCE MACHINERY CO. March 31, 1937, No. 9206. Convention date, Jan. 28. [Class 61 (iii.)] [Also in Group XIX] A torque-measuring wrench comprises a nut socket 29 carried by a ring 16 rotatably mounted between bifurcations 14, 15 of the head 10 by means of threaded bushings 19, 20 having annular rims 22 engaging annular grooves 21 in the ring 16, the latter having projections 16a, 16b engaged by plungers 41, 42, provided with heads 41a, 42a, serving to limit their forward movement and bearing against springs 35, 36 located in chambers 33, 34 in the head. Screw plugs 37 are provided in the ends of the chambers to vary the tension of the springs. The nut is rotatable in either direction and the torque applied thereto causes relative angular movement between the ring 16 and head 10 which is registered on a dial 54 by a pointer 56 rotating with a spindle 60 and pinion 62 actuated by a rack 63 in gear with a pinion 66 keyed to the ring 16.
Patent GB-273035-A (GB)
Title: Improvements in apparatus for drawing straight lines or circles
IPC: B43L7/00
Filed: 1926-04-08
Abstract: 273,035. Wollaston, H. J. Buchanan-. April 8, 1926. Ruling - appliances; compasses.-A device for attachment to, or incorporation in, the point or leg of a pair of compasses to facilitate ruling straight lines or circles of large diameter consists of a plate A with a straight edge B, which may be broken as shown, and with a clamp C for securing the compass leg inserted in one of the grooves E', E<2>. The straight edge of the plate is moved over the paper in contact with the edge of a ruler or template when a pen &c. in the other leg of the compasses describes the required line. For compasses having detachable points, the plate A may be formed with a shank to be inserted in the limb in place of the point. The plate may be provided with two rollers or wheels to bear on the paper, these rollers being adjustable to lie in the same plane or in planes inclined at any desired angle. The device may be applied to compasses, preferably of beam form, embodying two or more pens &c.
Patent GB-560656-A (GB)
Title: Improvements in heat exchange tubes and in methods of making the same
IPC: C25D1/02
Filed: 1943-06-09
Abstract: 560,656. Heat exchange tubes. UNITED STATES RUBBER CO. June 9, 1943, No. 9257. Convention date, Sept. 12, 1942. [Class 64 (iii)] [Also in Group XXXVI] Heat exchange tubes are formed by attaching wire staples or the like to a core or support, which is either a metal of low melting point and an electrical conductor or if of wax, fabric, &c. is rendered conducting, and electrolytically depositing metal thereon so that on removal of the core by melting or burning it out the prongs of the staples are left projecting into the interior of the tube so formed. The support may be a rod 15, Fig. 3, of wax or soft metal in which staples &c. 14 are inserted, or may comprise card clothing 21, Fig. 4, provided with staples 22, wrapped around a cardboard tube 20, metal 10 or 24 being in either case deposited thereover in which the parts of the staples remote from the prongs become embedded.
Patent GB-593576-A (GB)
Title: Improvement in manufacture of tetryl
Filed: 1944-05-15
Abstract: Tetryl is manufactured by passing a mixture of sulphuric acid (preferably 5-15 per cent), nitric acid (preferably 75-82 per cent) and water, preferably preheated to 140-160 DEG  F., into a nitration apparatus, introducing a solution of dimethylaniline in sulphuric acid, the ratio of nitric acid to dimethylaniline being at least 7 : 1, preferably between 7 : 1 and 12 : 1, agitating the charge throughout the nitration process, maintaining the nitration temperature between 150 DEG  and 180 DEG  F. until at least two-thirds of the dimethylaniline solution has been added and not below 140 DEG  F. during the remainder of the reaction, and thereafter recovering the tetryl, e.g. by cooling the charge and separating the crystallized tetryl by filtration, or by drowning the charge in water.  The required nitration conditions may be achieved by (1) maintaining the temperature at 150-180 DEG  F. throughout and feeding the dimethylaniline solution into the apparatus until a substantial portion of the nitric acid has been consumed, or (2) maintaining the temperature at 150-180 DEG  F. and terminating the reaction by discontinuing the addition of dimethylaniline solution while an excess of nitric acid remains, or (3) maintaining the temperature at 150-180 DEG  F. until about two-thirds of the dimethylaniline solution has been introduced and thereafter at 140-160 DEG  F.  The nitration mixture is advantageously maintained at 140-180 DEG  F. for 10-30 minutes after the reaction is substantially complete.  In an example, the acid mixture contains 10.5 per cent sulphuric acid, 78.5 per cent nitric acid and 11 per cent water and is preheated to 155 DEG  F., the ratio of nitric acid to dimethylaniline is about 10 : 1, and the temperature is maintained at 160 DEG  F. throughout the addition of the dimethylaniline solution and for 15 minutes thereafter.
Patent GB-625087-A (GB)
Title: Improvements in and relating to internal combustion turbine engines
IPC: F02C6/00
Filed: 1945-04-13
Abstract: 625,087. Gas turbines. POWER JETS (RESEARCH & DEVELOPMENT), Ltd.. and HAWTHORNE, W. R. April 13, 1945, No. 9323. Drawings to Specification. [Class 110(iii)] In a three-stage continuous combustion gas turbine in which the low-pressure turbine drives the low-pressure compressor,. the intermediate turbine drives the intermediate compressor and the high-pressure turbine drives the high-pressure compressor, these parts are disposed serially along their common axis in the following order:-the low-pressure turbine, the lowpressure compressor, the intermediate compressor, the intermediate turbine, the high-pressure turbine and the highpressure compressor. The ductings connecting the intermediate and high-pressure compressor surround the intermediate and high-pressure turbines and the ductings connecting the intermediate and lowpressure turbines surround the intermediate and low-pressure compressors. Reheating combustion may be provided between the turbine stages and cooling between the compressor stages. Useful power may be taken off any compressor turbine or a separate power turbine may be provided. The energy of the exhaust may be used for jet-propulsion. Specification 478,688 is referred to.
Patent GB-410957-A (GB)
Title: An improved device for suspending sides or flanks of bacon and other meat
IPC: A22C15/00
Filed: 1933-03-29
Abstract: 410,957. Hooks. SWINGLER, Ltd., G. & J., and SWINGLER, L., 320, Witton Road, Aston, Birmingham. March 29, 1933, No. 9412. [Class 89 (ii).] A bacon support - ing hook has a bent shank 1 with a sharpened hooked point 3 and a crosshead carrying pointed members 5 parallel to the bent portion 4 of the shank.
Patent GB-1032517-A (GB)
Title: Doors for toy motor vehicles
Inventor: GILLERON ANDRE ALBERT
IPC: A63H17/273
Filed: 1963-03-08
Abstract: 1,032,517. Hinges. MECCANO Ltd. March 8, 1963, No. 9433/63. Heading E2F. A door hinge arrangement for toy vehicles comprises a hinge member 2 secured to the door 1, a leaf spring 4 for urging the hinge member 2 into engagement with a bearing edge 3a formed in the opening in the body of the vehicle for receiving the door member, the hinge member being so shaped that when the door member is moved either to the open or closed positions it moves away or towards the bearing edge 3a. The hinge member includes a curved surface 7 joining the door member 1 at a groove 6 and a nose portion 2a joining the curved portion at a groove 2b, whereby when the door is in the open position the edge 3a locates in groove 2b, and in the closed position it locates in groove 6. The leaf spring 4 is supported between ribs 5 on the body member.