baber/WOPTO huggingface dataset:
Patent GB-542217-A (GB)
Title: Improvements in anti-oxidants
IPC: C11B5/00
Filed: 1940-05-21
Abstract: 542,217. Anti-oxidants. UNITED STATES RUBBER CO. May 21, 1940, No. 9000. Convention date, June 28, 1939. [Class 91] [Also in Groups IV and V] An anti-oxidant for organic substances which tend to deteriorate by absorption of oxygen from the air such as rubber and allied gums, unsaturated fatty oils such as unsaturated vegetable oils, essential oils, petroleum oils and their derivatives such as gasolines, soap, aldehydes, synthetic resins, turpentine, and insecticides such as Derris Root, Cube Root, and pyrethrum, is made by heating a secondary aromatic amino compound containing at least one alkenyl group linked to a nuclear carbon atom by oxygen and having the general formula A-O-R-NH-R<SP>1</SP>-X where Rand R' are aromatic nuclei of the benzene, naphthalene or biphenyl series, A is an alkenyl group and X is hydrogen or an alkenyloxy group. R and R' may also contain additional substituents such as halogen, hydroxy, aryloxy, alkyl, alkoxy, aryl, aralkoxy, secondary and tertiary alkyl amino, alkenyl, anilino, mercapto, and alkyl mercapto. In either or both of A and X the alkenyl group may be further substituted. The parent materials may be first prepared by reacting a C-hydroxy diarylamino compound in alkaline solution with an alkenyl chloride. Thereafter the anti-oxidants of the present invention are prepared by heating the parent material, the preferred temperatures being between 150‹C-300‹C. The reaction may be assisted by the presence of catalysts such as sulphuric, phosphoric, hydrochloric and benzoic acids, salts such as pyridine hydrochloride. ammonium chloride, or sodium carbonate, and bases such as diethylaniline and trimethylamine. The compounds thus produced range from an oily to a resinous character. Compounds mentioned as starting materials for the heat treatment include 2-, 3-, and 4-allyloxy diphenylamine. 2-, 3-, and 4-methallyloxy diphenylamine, di-allyloxy diphenylamine. di-vinyloxy-diphenylamine, di-methallyloxy diphenylamine, 4-crotyloxy diphenylamine, 4-isocrotyloxy diphenylamine, 4 - methylvinyl - carbinyloxy - diphenylamine, 4-(#-ethoxy)-4<SP>1</SP>-vinyloxy-diphenylamine, 4-phenyl-4<SP>1</SP>-allyloxy-diphenylamine, 4-methyl-4<SP>1</SP>- methallyloxy-diphenylamine, 4-methylphenylamino-4<SP>1</SP>-methallyloxy-diphenylamine, 4-allyloxy-phenyl-α-naphthylamine, 4-allyloxy-phenyl- #-naphthylamine, 4-allyloxy-5:5-dimethyl-acridane and 4-methallyloxy-thiodiphenylamine. Examples are given of the treatment of rubber with compounds resulting from the heat treatment of (1) 4-allyloxydiphenylamine, (2) 4- methallyloxy-diphenylamine and (3) a mixture of 4-crotyloxy-diphenylamine and 4-methyl-vinylcarbinyloxy-diphenylamine. The expression " rubber " is stated to include caoutchouc, balata, gutta percha and similar vulcanizable gums, as well as synthetic rubber, rubber isomers, reclaimed rubber, and natural or artificially prepared latices. Specifications 518,158 and 542.216 are referred to.
Patent GB-539831-A (GB)
Title: Improvements in and relating to variable pitch propellers
IPC: B63H3/04
Filed: 1940-05-22
Abstract: 539,831. Variable pitch propellers. GENERAL MOTORS CORPORATION. May 22, 1940, No. 9052. Convention date, May 22, 1939. [Class 114] In a variable pitch propeller the blades are simultaneously rotatable to vary the pitch through a common axial control member the blade axes being obliquely and symmetrically disposed to the main axle so as to form skewlines therewith. The propeller shaft 1 carries the propeller hub 2 and is carried in a bearing 3. The hub has an axial bore accommodating the central control rod 10 and three conical and oblique bores 5 in which are inserted the tapered blade roots 6 which can rotate about their axes within limits determined by stops 8, 8a on the blades and co-operating stops 9, 13 on the hub. Helical teeth 11 on the spindles mesh with a rack 12 on the control rod which is adapted to be moved axially to vary the pitch of the blades. In one form of control devices the bell-crank lever 54 Fig. 14, straddling the control collar 52 on the control rod is connected to a shaft 56 which in turn is connected to the operating shaft through a resilient lost-motion device which permits shocks to be absorbed. In a further modification the shock absorber is of the hydraulic dash-pot type. In another form a locking-device for the control-rod 10 includes spaced collars 31a, 31 29a, 29 and Fig. 16 movable between slots 40, 41 and providing forward, reverse and neutral pitch positions. Engaging these grooves is a vertically slidable fork 30 connected to a bell-crank lever 32 linked to the hand lever 31.
Patent GB-448536-A (GB)
Title: Process for the manufacture of metallic magnesium from magnesium oxide
IPC: C22B26/22
Filed: 1935-03-22
Abstract: The magnesium vapours from the reduction of magnesium oxide by the process of the parent Specification are suddenly chilled to a temperature at which magnesium and carbon monoxide are stable in the presence of each other, by intimate commixture with finely divided and preferably cooled hydrocarbon oils, an inert or reducing gas preferably being employed as dispersion medium. Ordinary atomizers with or without an impingement plate may be employed.  The ribs are separated from the magnesium dust as by means of a filter press and the solid residue freed of remaining oil by heating after which it may be converted into compact metal by known methods.  This stop may be facilitated by driving off the residual oil at a temperature effecting a partial cracking so that a crumbly mass of magnesium dust and coke is obtained.
Patent GB-1164245-A (GB)
Title: Agriculture Machinery for Connection to a Tractor with Three-Point Attachment.
IPC: A01B49/04
Filed: 1968-02-26
Abstract: 1,164,245. Agricultural implement. TURENGIN SOKERITEHDAS OY. 26 Feb., 1968 [16 March, 1967], No. 9097/68. Heading A1B.  An implement for conneciton to the three point attachment of a tractor comprises different units including a pre-cultivator, a harrow, a fertilizer and a roller. A precultivation unit consists of a drag 18 with adjustable height and inclination which levels the surface. The cultivation unit mounted behind is a spring harrow which includes S-shaped prongs 21 detachably fastened to transverse supporting bars 5, 6. A fertilizing unit is mounted above the harrow and consists of a tank 23 with two groove members 25, 26 mutually connected, in the lower part. Feed rollers 29 are mounted in the grooves and driven by chain and wheel mechanism 30-37. Fertiliser is fed through feed openings 38 situated above the prongs 21 and through funnel 40 to pipes 41, 42 with ends fixed behind the prongs of the harrow. The rolling unit comprises two adjacently located warp rollers 44 mounted behind the harrow. The pressure of the warp rollers on the ground is regulated by adjustable pulling springs 53 which connect the frame of the warp rollers to the main frame. In a modification of the cultivator illustrated in Fig.3 (not shown), two drags 18 are provided and the S-shaped prongs 21 are replaced by prongs connected to bars 5, 6 by leaf springs (57).
Patent GB-916061-A (GB)
Title: Thiadiazole derivatives
Inventor: CLARKSON RICHARD
IPC: C07D285/135
Filed: 1960-03-15
Abstract: The invention comprises thiadiazole derivatives of the formula:- <FORM:0916061/IV (b)/1> where R represents a hydrocarbon radical, e.g. an alkyl, cycloalkyl, aryl or aralkyl radical.  The compounds are prepared by reacting a hydrazine derivative of the formula:-H2N.NH.CS.OR, or a salt thereof, with a cyanogen halide, preferably in the presence of a strong base and a solvent or diluent. Hydrazine derivatives of the formula:-H2N.NH.CS.OR are prepared by reacting an appropriate xanthate with hydrazine, or with sodium chloracetate, and then hydrazine.  Specification 916,062 is referred to.
Patent GB-550781-A (GB)
Title: Improvements in or relating to dirt bags for suction cleaners
IPC: A47L9/14
Filed: 1941-07-21
Abstract: 550,781. Vacuum cleaner dust bags. HOOVER, Ltd. July 21, 1941, No. 9188. Convention date, Sept. 7, 1940. [Class 8 (ii)] To facilitate the manoeuvring of a suction cleaner below furniture, the dust bag is formed with a longitudinal web 7, or longitudinally spaced webs, which resist inflation and provide a longitudinal recess to accommodate the handle which carries the bag. The web may be spaced from the inlet to provide an entrance to the separate sections. As a modification, the bag may be formed of two parallel tubular sections 9, Fig. 4, stitched together.
Patent GB-444092-A (GB)
Title: Developing machine for kinematographic films
IPC: G03D3/13
Filed: 1935-03-25
Abstract: 444,092. Photographic developing apparatus. DEBRIE, A. L. V. C., 111, Rue St. Maur, Paris. March 25, 1935, Nos. 9233 and 9234. Convention dates, March 26, 1934 and March 6, 1935. [Class 98 (ii)] A developing, washing, fixing, and drying machine for kinematograph films, comprises a series of substantially similar vats, each having an unloading or clearing door extending over at least part of one small side, and arranged side by side along their longer sides, and provided with film driving and loose film unwinding rollers carried by horizontal spindles within each vat. As shown in Fig. 1, the film passes from a reel 1 through a storage vat 3, developing vats 8-8<11>; washing vat 28, fixing vats 29-29<11>, washing vats 30- 30<11>, a second storage vat 33 and drying vats 38-38<11> to a take-up reel 37. On the two upper rotatable spindles 11<1>, Fig. 3, are driving rollers 141, and on the lower spindles 17<1>, fixed only to one side of the vat, are loose rollers 19. Keyed on each spindle 11<1> is a pinion 15 driven by a worm 16. Each end of the worm is provided with a driving plate adapted to be engaged with the corresponding plate on the adjacent vat. Each vat carries two pulleys 31 serving as guides for the film between the vats. On the small side of each vat is a door 9 made watertight by a rubber packing. The liquid is pumped into the vats through perforated tubes 201, 20<11>. For the storage vats 3 and 33, Fig. 1, the lower rollers are replaced by pulley blocks 6 and 35. The drying vats 38-38<11> are divided by partitions 39 into two compartments. The apparatus may be provided with a speedometer. In a modification compressed air is blown in at the top on to the film to remove adhering liquid, the liquids are forced in through vertical distributing tubes and removed at the bottom of the vats, and the covers are held on their vats by tensioned belts forming a watertight joint between the covers. Specification 293,686, [Class 98 (ii)], is referred to.
Patent GB-1028714-A (GB)
Title: Improvements in and relating to photographic shutters
IPC: G03B9/64
Filed: 1963-03-08
Abstract: 1,028,714. Camera shutters. AGFA A. G. March 8, 1963 [March 9, 1962], No. 9348/63. Heading G2A. The shutter comprises an improvement on the generally similar shutter of Specification 964,682. In the present arrangement, during the running down, there is an increase in the mechanical advantage between the blade driving means (rings 2 and 3) and the retarding mechanism (disc 11 and lever 14), the initial mechanical advantage being smallest at the lowest shutter speed setting. A pin 19 on lever 14 rides on the cam surface 20 of the shutter speed control ring 35, to which movement is transmitted from a lever 34 connected to an exposure meter. Because the said mechanical advantage increases as the shutter runs down, the cam surface 20 can be kept relatively flat, so minimising vibration and excessive deflection of the speed regulating and retarding elements (pin 19, disc 11, and lever 14) following the shutter release.
Patent GB-397796-A (GB)
Title: Improvements in electrical switchgear
IPC: H02B11/18
Filed: 1932-06-21
Abstract: 397,796. Switchgear structures. WHITEHEAD, G. E. and WHITEHEAD'S ELECTRICAL INVENTIONS, Ltd., 38, Rhiwbina Hill, Rhiwbina, near Cardiff. June 21, 1932, No. 9352/33. Divided on 392,926. [Class 38 (v).] In switchgear arrangements of the type in which the isolation of the circuit-breaker is effected by movement of an isolating carriage carrying intermediate conductors adapted to engage the isolating sockets relatively to the circuit-breaker head or casting, as described in Specification 286,429, [Class 38 (v), Electric switches &c.], the circuit-breaker head or casting is arranged after isolation to be withdrawn horizontally from its normal operative position and means are also provided whereby the circuit-breaker tank may be lowered from the circuit-breaker head while the latter is in its normal operative position. As shown in Figs. 1 and 2, the circuit-breaker head is normally immediately below fixed isolating sockets 8, 15 extending downwardly from casings 12, 6 so that an isolating carriage 2 within the circuit breaker tank when raised or lowered can bring the movable isolating contacts 19, 20 into or out of engagement with the fixed isolating sockets, the movable isolating contacts 2 having connections passing through the insulating tubes 3, 4 to the " fixed " contacts of the circuit-breaker which are adapted to be bridged by the member 21 operated by the handle 23. The circuit-breaker contacts employed are preferably of the type described in Specification 392,926. The circuit-breaker head 1 is supported on side frames 5 so that after isolation it may be moved horizontally to the position shown in Fig. 2 in which unobstructed access to the mechanism may be had in practically all directions. Before this horizontal movement of the circuit-breaker head takes place the tank 25 may be lowered, as shown in Fig. 2, into a pit provided below the normal operative position of the circuit-breaker, the mechanism and contacts carried by the head thus being completely exposed. Suitable interlocks may be provided to prevent incorrect or unsafe manipulation during the above operations. The lowering of the oil tank is effected through screw-and-nut mechanism and bevel gearing, Figs. 3, 4, 5, and 6 (not shown), this mechanism being interlocked with the reversible ratchet mechanism for racking out the circuit-breaker head. If desired, however, in the case of light switchgear units, the latter may be omitted. The layout of bus-bar and feeder chambers is similar to that described in Specification 372,027, and as shown in Figs. 1 and 2 the bus-bars 7 are mounted within a casing 6, the cable connection 17 passing through a transformer chamber 13 to a chamber 12 supporting the isolating socket connection. If desired, automatically-operating shutters may be provided to screen the fixed isolating sockets after the withdrawal of the movable isolating contacts.
Patent GB-982926-A (GB)
Title: Coherent nuclear materials and reactor elements made therefrom
IPC: G21C7/04
Filed: 1962-03-12
Abstract: 982, 926. Nuclear fuel, UNITED STATES ATOMIC ENERGY COMMISSION. March 12, 1962 [May 17, 1961], No. 9372/62. Heading G6C. A fissile or fertile nuclear material comprising a binder glass which is a melt of an actinide ceramic fuel material and a conventional glass, said binder glass being intermixed with an actinide ceramic fuel material is used either with or without cladding as a fuel or breeder element for a nuclear reactor. The binder glass may be prepared from a mixture of the usual glass forming oxides e.g. SiO 2 , CaO, Na 2 O, B 3 O 3 , and 10% to 90% by weight of U 3 O 8 ,UO 2 ,Pu 3 O 8 ,PuO 2  or ThO 2 . These are melted in the usual way to form a glass, which is cooled and finely ground, e.g. less than 40 microns particle size, and then a further portion of actinide fuel material, e.g. 10% to 90% by weight of UO 2 , PuO 2 , UN, PuN, UC, PuC, US, PuS ,  ThO 2 , ThN ,  ThS, ThC, ThCThH 2  or ThC 2ThH 2 , is added and the mixture is compacted into a coherent whole at a temperature between 400‹C. and 700‹C. and a pressure between 15,000, and 60,000 psig. to form the fuel or breeder element. Clearly, the ceramic fuel material selected from the variety given above varies according to whether a fissile or a fertile element is the desired end product. Various types of compaction including extrusion and vibratory compaction are described.
Patent GB-398753-A (GB)
Title: Hat or cap rack
IPC: A47C7/64
Filed: 1933-03-29
Abstract: 398,753. Hat-holders. SOWDEN, K., 35, Fisher Street, Blackpool. March 29, 1933, No. 9393. [Class 52 (v).] A hat - holder for use underneath seats comprises a frame of flat strip metal bent into U-shape narrowing towards the rear, the front or open end being spaced from the seat by half-loops A, B bent rearwardly and integral with flat fixing lugs L, while the closed end is bent rearwardly at C, D to rest flat against and be fixed to the seat so that the arms of the device are spaced parallel from the under surface of the seat. Specification 9355/93, [Class 52, Furniture &c.], is referred to.
Patent GB-1498811-A (GB)
Title: Preparation of gravure printing cylinders
IPC: B41N3/00
Filed: 1974-03-01
Abstract: 1498811 Making gravure cylinders; machine tool control; turning; honing CROSFIELD ELECTRONICS Ltd 25 Feb 1975 [1 March 1974] 9442/74 Headings B3A, B3B, B3D and B3T A method of making a gravure cylinder comprises forming a cylinder having a surface of a first material with recesses all of substantially the same depth and constituting gravure cells separated by cell walls, filling the recesses with a second material more easily removed than the first material by a scanning energy beam, and subjecting the filled cylinder to a surfacing operation in which the surface of the first material is used as a reference to control the thickness of the layer to be removed. The cylinder (1), Fig. 1 (not shown), has an unfilled surface (5) on which is supported a bearing (6) carrying a diamond tool (3) If the cylinder is eccentric the eccentricity is transferred through the bearing (6) to the tool (4) so that it follows the surface during cutting. The tool is mounted on a thrust plate 11, Fig. 2, which carries sensing elements 12, which respectively sense the distance to the cylinder surface before and after cutting. The outputs of the elements 12 and that of a device 14 for sensing the position of a piston 9 in a cylinder 10 are applied to an electronic processor 13, which applies a signal to an electrically driven hydraulic supply for the cylinder 10. Sensing systems for the device of Fig. 2 include capacitative and inductive measuring techniques and techniques based on the absorption of infra-red radiation by the plastics material. The turning process may be replaced by a honing process when the plastics material includes a hardening additive. The honing pressure may be controlled similarly to the depth of cut control of Fig. 2 or the spring-loaded head normally fitted to printers may be suitably modified, Fig. 3. The position of a housing tool 20 is controlled by sensors 24, the output signals of which are applied to hydraulic controllers 22 for regulating the supply of water to thrust pads 21. The pressure of the honing tool varies inversely with the amount of water supplied. The honer may rotate about a fixed axis as the cylinder rotates or it may have an orbiting motion on which is superimposed a more rapid circular bodily movement. The sensors 24 measure the distance from the surface by shining a light beam on it and monitoring the reflectance of the metal surface as the cell walls become visible due to the limited absorption of the plastics material at optical wavelengths.
Patent GB-1387483-A (GB)
Title: Process for the production of integrated optical elements
IPC: G02B6/13
Filed: 1972-03-01
Abstract: 1387483 Photographic process BAYER A G 1 March 1972 [2 March 1971] 9532/72 Heading G2X Integrated optical elements (e.g. wave-guides) are produced by exposing at least part of the surface of a radiation-sensitive material to at least one electromagnetic surface wave (as defined), and if necessary or desired photographically processing, thereby producing a change in refractive index in the exposed areas. A waveguide may be formed Fig.2 (not shown) by exposing a photo-sensitive layer (2) on a support (7) and immersed in a liquid having a very high refractive index (CH 2 I 2 ) to homogeneous coherent radiation directed for total internal reflection at the surface of layer (2) so that surface waves are formed in the layer producing a periodically varying refractive index in the surface. Grid couplers followed by waveguides are produced by forming an interference pattern with these surface waves, either by using a beam of homogeneous coherent radiation directed perpendicular to the surface Fig.3 (not shown) or another set of surface waves from the same or opposite direction Fig.4 (not shown). In the Examples the exposure is effected using a laser and the photo-sensitive layer is either (1) a AgBr/l emulsion which after exposure is prehardened, rinsed, developed, fixed, rinsed, bleached rinsed, treated in successive alcohol baths and dried; the bleaching is effected using a mixture of (A) aqueous CuSO 4 , KBr and citric acid and (B) aqueous H 2 O 2  or with (A) alone followed by (A) + (B); (2) a photo-sensitive vinyl polymer; or (3) bichromated gelatine which after exposure is simultaneously steep-hardened and desensitized.
Patent GB-411447-A (GB)
Title: An improved suspension for motor bicycles, light cars and similar vehicles
IPC: F16F9/02
Filed: 1932-10-05
Abstract: 411,447. Vehicle suspensions; shockabsorbers. FAUDI, F., 190, Hansa-Allee, Oberkassel, D³sseldorf, Germany. Oct. 5, 1932, No. 9565/34. Divided on 408,592. [Classes 108 (ii) and 108 (iii).] In a combined pneumatic suspension and damping device for motor bicycles, light cars &c. comprising a differential piston 2 and a compressed-air cylinder connected respectively to the wheel suspension or vehicle frame or vice-versa, a passage or passages 5 formed in the piston connect a cylinder chamber o with a chamber 6 formed in the piston or pistonrod, the chamber 6 communicating through apertures 9 with the other cylinder chamber u, the passage or passages 5 being closed normally by a spring-pressed, apertured, non-return, discvalve 7. On compression of the device the valve 7 opens and air passes from the chamber o through the passages 5 and apertures 9 to the chamber u, while on extension of the device the valve remains closed, air passing through the aperture 10 therein. Specification 408,592 is referred to.
Patent GB-1426406-A (GB)
Title: Microwave harmonic filter
IPC: H01P1/209
Filed: 1974-03-04
Abstract: 1426406 Waveguide harmonic filters VARIAN ASSOCIATES 4 March 1974 [5 March 1973] 9570/74 Heading H1W A microwave harmonic filter comprises alternating H-plane and E-plane T-junctions. The filter shown consists of H-plane junctions 11, 13 and E-plane junction 12. At each junction, the input arm is prolonged beyond the junction into a filtering arm (21, 22, 23) containing an E-plane septum (e.g. 32) which divides this arm into two waveguides (e.g. 29, 30) having a cutoff frequency greater than that of the fundamental and less than that of the harmonic frequencies. The harmonic frequencies are attenuated by dissipative terminations (e.g. 33, 33) of pyramidal form. The septum 45 of the E-plane junction 12 is provided with a tapered edge opposite the output arm of the junction. The Specification also describes a filter comprising six junctions arranged in such a manner that the input and output waveguides are aligned and the polarization of the output wave is the same as that of the input wave (Figs. 2, 3, 4, not shown).