baber/WOPTO huggingface dataset:
Patent GB-886274-A (GB)
Title: Vehicle decelerating apparatus
IPC: B64F1/02
Filed: 1958-05-23
Abstract: 886,274. Aircraft arresting gear. ACME PRECISION PRODUCTS Inc. May 23, 1958 [May 23, 1957], No. 16657/58. Class 4. [Also in Group XXXIV] Aircraft arresting gear comprises means for engaging an aircraft, attached to a cable having at one end a primary energy absorbing means, and secondary energy absorbing means cooperating with a loop in the cable to permit controlled contraction of the loop to reduce the acceleration forces transmitted to the primary energy absorbing means on arresting an aircraft. The Figure shows an aircraft 15 landing along a runway 12 and engaged with a barrier 10 connected at each end to a cable 20 as at 16. Each cable runs over a pulley 22, and is then secured around two sets of sheaves 35, 36 mounted respectively on the piston and cylinder of a hydraulic ram 25. The cable is then wound on a drum 40 controlled by disc brakes 45 (see Group XXXIV). During the early stages of an arrest the ram contracts, fluid passing from it through a non return valve to one, two, or three pressurized reservoirs (not shown) according to the ram characteristic desired, e.g. all three reservoirs will be connected to the ram when braking a fast or heavy aircraft. This initial contraction of the cable loop reduces the risk of the cable snapping. At the appropriate time, one, two, or three disc brakes 45, according to the expected momentum of the aircraft, become operative on the drum to brake the aircraft. The brake(s) may be hydraulically operated (see Group XXXIV), by (a) a valve on the drum which opens when the drum ceases to accelerate, Fig. 2 (not shown), or (b) a valve operated by a diaphragm responsive to the rate of fluid flow out of the ram, so that the brakes operate when the speed of contraction of the ram falls below a predetermined value, Fig. 6 (not shown), or (c) by a valve operated by a diaphragm responsive to the pressure in the ram as it contracts, the brakes operating when this pressure exceeds a predetermined value, Fig. 7 (not shown) or (d) by a valve operated by a governor driven by a rack on the ram, so that the brakes operate when the speed of contraction of the ram falls below a predetermined value. In any case, the brakes are also operable by a limit switch when the ram completes its stroke. To reset the gear fluid is allowed to flow back from the reservoir(s) to expand the ram, and the cable is rewound on to the drum 45 by a hydraulic motor.
Patent GB-1424418-A (GB)
Title: Apparatus for detercting the skew of an opaque band material travelling on a delivery system
IPC: G01B11/245
Filed: 1973-04-06
Abstract: 1424418 Detecting position photo-electrically NIPPON KOKAN K K 6 April 1973 [6 April 1972] 16682/73 Heading G1A To determine whether an elongate body 1, Fig. 2, such as a length of steel or paper being supplied to a cutting device is lying squarely on its conveyer or is lying partly across the conveyer, the position of one edge of the body is optically sensed at spaced locations 4 and 5. In the embodiment of Fig. 2 light is emitted by sources 7 and 10 and received by optical fibre arrays 9 and 11. Each fibre terminates in a light detector, so that the position of the body edge can be determined by the number of a fibres lying in the shadow of the body. If the number of non-illuminated fibres is the same in the two arrays 9 and 11 the body is lying squarely on its conveyer; otherwise the extent to which the body lies across the conveyer can be measured by the difference of the number of illuminated fibres in the arrays. In the Fig. 2 embodiment each fibre terminates in a photo-  transistor, Figs. 7-9 (not shown), which operates a relay to cause a current to flow in a summing circuit. The total current from one array is compared with the total from the other and after integration to remove the effects of edge roughness the result can be used to operate a display and alarm. In another embodiment, Fig. 10, each array of fibres is replaced by a single scanned detector 38. Light L from the source 7 is in part obstructed by the body 1 whose edge R is to be sensed; the light not blocked is focused by lens 33 through mask 34, 35 on to a slit 39 in rotating drum 37 and impinges on detector 38 via lens 36. The length of time for which the detector is illuminated depends on the width of the beam passing the edge of body 1 i.e. on the position of body 1. The output from detector 38 gates a set of clockpulses to a comparator until the slit 39 has rotated far enough to allow light from a source 40 to reach a detector 42. A similar train of pulses is established by a second similar detection system further along the edge of the body, and is also fed to the comparator. The difference in the number of pulses is found, Figs. 12A-14E, (not shown) and is synchronized with the cutting device to operate a reject mechanism when the body is more than a permissible amount out of alignment with the conveyer, Fig. 11 (not shown). An alarm and display can also be operated.
Patent GB-1387718-A (GB)
Title: Rotary positive-displacement machines
IPC: F01C21/08
Filed: 1972-04-11
Abstract: 1387718 Rotary positive displacement machines PROCEDES TECHNIQUES DE  CONSTRUCTION 11 April 1972 [19 April 1971] 16725/72 Heading F1F A rotary positive displacement machine, in which a rotor 11 is eccentrically mounted for rotation in a cylindrical housing 9 and has radially slideable vanes 16, has end-plates 10, 10' with cylindrical cavities 14 which receive respective ends of the rotor 11 with axial clearances 12, 12'. The vanes extend axially beyond the rotor extensions and have axial extensions 19, 19' which abut the end surfaces 15 of cavities 14, the central part of each vane extending radially outwardly to mate with the space defined by end surfaces 18 of plates 10, 10' and cylinder 9. The only accurate axial lengths that are needed are those of the parts of the vanes held between surfaces 18, the outer surfaces of the vane extensions sealingly contacting the inner cylindrical surfaces of cavities 14. This has an advantage over the past machines Figs. 1 and 2 (not shown) where the whole rotor and its vanes has to be manufactured to extremely fine tolerances to reduce leakage at the axial faces. An embodiment in which the projections 19, 19' are replaced by a single central radial vane projection is also described, Fig. 5 (not shown).
Patent GB-914054-A (GB)
Title: Polyamides based on terephthalic acid and articles made therefrom
Inventor: GABLER RUDOLF
IPC: C08G69/26
Filed: 1961-05-08
Abstract: A process for the production of a polyamide comprises condensing terephthalic acid with a substantially equimolar proportion of a mixture of 3-methyl- and 2-methyl-hexamethylene diamine.  The products of the invention are soluble in sulphuric acid, formic acid, phenol and cresol and swell in methanol, ethanol or isopropanol.  An example is given.  U.S.A. Specification 2,752,328 is referred to.
Patent GB-573625-A (GB)
Title: Production of cyanoethyl alpha chloroacrylate
IPC: C07C69/653
Filed: 1942-11-25
Abstract: Cyanoethyl a -chloracrylate is made by first condensing a  - b  - dichlorpropionic acid with ethylene cyanhydrin in the presence of benzene and an acid catalyst, and then heating the a  - b  - dichlorpropionic ester to remove one molecule of hydrochloric acid. In an example, in the first stage of the process the liberated water is removed with the benzene as an azeotropic mixture, and the residue is heated under reduced pressure, a soda-lime tower being used to absorb the liberated hydrochloric acid and preserve the vacuum.
Patent GB-924675-A (GB)
Title: Improved copying machines
IPC: B65G39/16
Filed: 1959-05-15
Abstract: 924,675. Feeding sheets. MINNESOTA MINING & MANUFACTURING CO. May 15, 1959 [May 21, 1958], No. 16790/59. Class 100 (1). [Also in Group XX] A copying machine in which an original, after being fed into the machine, is carried round an endless path for as many cycles as are required, and then withdrawn, the said original passing through a printing station during each cycle, has means for feeding a copy sheet during each cycle so as to be carried with the original as a composite through the printing station, the transporting means comprising two belts one of which is transparent. In the form shown, an endless carrier belt 10 passes round rollers 11-15. A second endless belt 16 passes round rollers 17-20. Thus between rollers 14 and 20 the two belts are in contact. Belt 10 is transparent and heat-resistant, and belt 16 may be of fabric or a transparent polyester; suitable belt materials are suggested. A tubular incandescent lamp 21 inside a reflector 22 throws a focal line of radiation on the surface of the print roller 12. The graphic originals 47 are stacked in a feed device 28, and one is fed forward by a feed roller 46 on to the horizontal upper section of belt 10. It passes between two curved shield members 23, 24, tripping a control switch 26 which initiates the sequence of operations, and comes to rest against a stop 33. A copy sheet from a second feed device 29 has also been fed forward to abut against stop 33, so that the two sheets are now superimposed. Rollers 34 now move upwards to lift the leading edges of the two sheets clear of stop 33 and against belt 10, which carries the sheets round to the printing station, between belt 10 and roller 12. Here lamp 21 is switched on to make the exposure. The sheets are now guided to pass between roller 13 and a deflector shield 27 towards a fan assembly 32, which draws the adjacent copy sheet away from the original and deposits it in a receiving tray 31. The original is meanwhile carried forward, and as it approaches roller 14 it is caught between both belts 10 and 16. It is so conveyed, past roller 15 and on to the upper straight part of belt 10 towards the shield members 23, 24 and so on towards a further complete circuit. Thus the original is returned round an endless path for as many circuits as is required, a copy being made each time. When it is desired to withdraw the original, no copy sheet is fed forward, so that the fan assembly then draws the original itself away on to tray 31. A new original may then be introduced from the device 28, if required. In order to maintain lateral alignment of original and copy sheet, a belt alignment control unit is provided, as described in Specification 924,677 [Group XXX]. The copy sheet feeding device is described more fully in Specification 924,676.
Patent GB-976915-A (GB)
Title: Improvements in or relating to the production of cyanates
IPC: C01C3/20
Filed: 1963-04-29
Abstract: In a process for producing alkaline earth metal cyanates, a particulate feedstock comprising a basic alkaline earth metal compound and 40 to 60% of the stoichiometric amount of urea is mixed with at least 8 times its weight of material produced in a previous run of the process and the mixture thus formed heated for at least half a minute at between 200 DEG  and 275 DEG  C.  The mixture is preferably heated in a zone having a closely-fitting rotatable helix therein which is rotated to force the mixture through, and the process is preferably carried out continuously, part of the reaction product being recycled and mixed with fresh feedstock in the desired ratio, e.g. 10 to 15 : 1, the remainder being withdrawn and alkaline earth metal cyanate recovered therefrom. The feedstock preferably comprises 50% of the stoichiometric amount of urea and the temperature of heating is between 220 DEG  and 260 DEG  C.  The basic alkaline earth metal compounds used are defined for the purposes of the Specification as the oxides, hydroxides and hydroxide-oxide mixtures of magnesium calcium strontium and barium.
Patent GB-1334780-A (GB)
Title: Container
IPC: B65D6/00
Filed: 1971-05-25
Abstract: 1334780 Containers SOC NOUVELLE DES ATELIERS DE VENISSIEUX 25 May 1971 [17 June 1970] 16864/71 Heading B8P A container comprises a rectangular baseplate 1 opposite end walls 2 and 3, each bounded by a frame 4 or 5, elements 11, 12 parallel to the longitudinal axis of the plate and connecting the frames 4 and 5, and a continuous membrane fixed around its entire periphery to the longitudinal edges of the base-plate and to the edges of the frames, the membrane bearing on but not fixed to the elements. The membrane may be a metal sheet welded or fixed by clamps, hooks, lacing or adhesive to the rest of the container.
Patent GB-781981-A (GB)
Title: Improvements in and relating to thermostats
IPC: G05D23/24
Filed: 1954-06-08
Abstract: 781,981. Thermal switches. MINNEAPOLIS. HONEYWELL REGULATOR CO. June 8,1954 [June 8, 1953], No. 16866/54. Class 38 (5). [Also in Group XXXV] In an automatic space temperature control system (see Group XXXV) variations in temperature may be detected by a thermal switch, one element of which is responsive to radiation and convection and acts in opposition to another element responsive to convection so that the effect of convection is reduced. In Fig. 4, fluid in a " black " bulb 72 is responsive to radiation and convection and fluid in a polished bulb 78 is responsive to convection only by virtue of a slotted shield 69. Bellows 73, 71, responsive to expansion and contraction of the fluid in bulbs 72, 78 respectively, apply forces to a lever 74, pivoted at 75, which operates a switch 76 to correct the temperature when it deviates from a value determined by the setting of a screw 79. In a modification, Fig. 5, a bimetal strip 90 is responsive to radiation and convection and a bimetal strip 84 is responsive to convection only by virtue of a slotted shield 82. The two bimetal strips which are joined at 89 and pivoted at 85 operate a switch 83 to correct the temperature when it deviates from a value determined by the setting of a screw 88 operating a cam 87.
Patent GB-1347292-A (GB)
Title: Waste pickle liquor
IPC: C02F1/76
Filed: 1971-05-25
Abstract: 1347292 Treatment of waste pickle liquor WIRE SALES CO 25 May 1971 [24 Nov 1970] 16902/71 Heading C1A Waste pickle liquor is cooled to precipitate the ferrous salts contained therein after which said salts are filtered off and dissolved in water and the solution is then treated with sodium hypochlorite to precipitate ferric hydroxide which on heating is converted to Fe 3 O 4 . In the example waste liquor is cooled to 0‹C. in vessel 2 and filtered using, e.g. active charcoal, the recovered acid being recycled and the solids being dissolved in water and after a further filtration passed to vessel 6. In reactor 6 the ferrous salt solution, e.g. FeSO 4 , is treated with NaOCl to precipitate the iron content as ferric hydroxide which is filtered off and passed to an oven, or evaporator, (not illustrated) where it is converted to Fe 3 O 4 . The liquor from reactor 6, after separation of precipitated solids is passed via line 10 to evaporator 11 for recovery of the sodium salt, e.g. Na 2 SO 4 , produced as byproduct. Chlorine evolved in reactor 6 is either stored, or is passed into NaOH in vessel 9 to form NaOCI which is then used in precipitation of ferric hydroxide.
Patent GB-530325-A (GB)
Title: Improvements in or relating to vapour generators
IPC: F22B37/32
Filed: 1939-06-09
Abstract: 530,325. Centrifugal vapour separators. BABCOCK & WILCOX, Ltd. June 9, 1939, Nos. 16959 and 16960. Convention dates, June 9, 1938, and May 13, 1939. Addition to 526,825. [Class 23] A centrifugal separator, for use in a tubulous boiler as described in the parent Specification, is provided with means to direct liquid away from the inlet zone of the drum, by imparting to the liquid a component of motion towards the liquid outlet. The mixture of steam and water passes by the pipes 23, Figs. 2, 4, to the inlet chamber 31 formed by the plates 32, 33, 34 and extends almost the whole length of the drum 24. The centrifugal separators 35 are supported by the plate 32 and each has a separating chamber 41 with a tangential inlet 36 through which the mixture passes from the chamber 31. Each separator has an helical blade 48 which extends downwards from the top of the separator chamber to deflect the separated water towards the annular outlet 43 between the flange 44 and the separator wall. This outlet may have vanes 46, and the lower end of the blade 48 may be tapering. The clean steam outlet 50 is enclosed by a cylindrical flange 47, and after leaving the centrifugal separator the steam passes through a secondary separator 42 composed of a number of corrugated plates. After leaving this secondary separator the steam may be passed through a tertiary separator 62 consisting of plates common to all the centrifugal separators in the drum 24. The flange 47 round the outlet may be of conical instead of cylindrical form, and a number of guide blades may be used so that the inlet is sub-divided. In modifications, the walls of the separators are provided with grooves or rifling to direct water downwardly.
Patent GB-1302752-A (GB)
IPC: C08F136/08
Filed: 1970-04-09
Abstract: 1302752 Isoprene polymerization catalyst JAPAN SYNTHETIC RUBBER CO Ltd 9 April 1970 [11 April 1969] 17028/70 Heading C3P Isoprene is polymerized in the presence of (a) a titanium chloride or bromide, (b) a trihydrocarbyl aluminium and (c) a beta-diketone. Cyclopentadiene impurity may be present. In examples, Al(C 2 H 5 ) 3  or al(iC 4 H 9 ) 3 , TiCl 4 , and acetyl acetone, benzoylacetone and dibenzoyl methane are used as components (b), (a) and (c) respectively.
Patent GB-360423-A (GB)
Title: Improvements in and relating to high frequency transformers or coupling coils
IPC: H01F30/16
Filed: 1930-06-02
Abstract: 360,423. Inductances ; high frequency transformers. MAERLENDER, H. G. and MAERLENDER, H. A., 1917, East 75th Street, Cleveland, Ohio, U.S.A. June 2, 1930, No. 17077. Convention date, May 31, 1929. [Class 37.] Coupling coils for radio apparatus comprise a number of similar primary windings disposed in a circular arrangement and connected in parallel, in association with secondary windings similarly located and connected, the mutual stray fields of the windings being equalized. In one arrangement, Fig. 2, the units L are mounted on an annular disc 9 carried by brackets 12, 13 on a base 11. The disc 9 has a detachable wedge-piece to permit threading of the units. The separate windings are connected to annularly disposed conductors 3 .. 6 also carried by the brackets 12, 13. In a modification, Fig. 8, the coupling comprises three units L\ L2, L<3> having their primary and secondary windings respectively connected in parallel.
Patent GB-1415776-A (GB)
Title: Burner for blast heating apparatus
IPC: C21B9/00
Filed: 1973-04-10
Abstract: 1415776 Blast heating stoves; non-atmospheric gas burner BROHLTAL-DEUMAG AG FUER FEUERFESTE ERZEUGNISSE 10 April 1973 [29 May 1972] 17085/73 Headings F4K and F4T In a stove for heating the blast for a blast furnace the gas and air are brought into the combustion chamber 3 through openings 10, 11, Fig. 2, in opposite walls, the openings being offset so that the streams of gas and air are interleaved for efficient mixing and burn in the combustion chamber. The stove is in the shape of a tower, the hot gases leaving the upper end of the combustion shaft 1 are deflected downwards by a dome and pass through the grid shaft 2 where the heat is given up to the stonework. When the stove is on blast, the blast is blown through the grid shaft in the other direction and the heated blast leaves from an outlet 25 in the combustion chamber. A cover plate 21 protects the combustion chamber from falling stones &c. As shown the gas and air chambers 4 and 5 are on opposite sides of the combustion chamber. In another form (Fig. 4, not shown) the gas chamber is at the outer wall of the stove and the air chamber is between the combustion chamber and the curved wall of the combustion shaft. In the form of Fig. 5 the combustion chamber 50 is external to the grid shaft 62, the hot gases passing up into the dome 63 before passing downwardly through the grid shaft. The gas and air are passed into the combustion chamber via offset openings 52 in opposite walls. In similar arrangements the combustion chamber may be mounted on the top of the dome (Fig. 8, not shown) or two external combustion chambers may be mounted just below the dome (Fig. 10, not shown). (For Figures see next page.)
Patent GB-867792-A (GB)
Title: Process for forming laminates
IPC: B32B27/00
Filed: 1958-05-29
Abstract: Sheets are coated by fluidising a bed of pulverulent, dry, free-flowing, fusible material, heating said sheets to above the fusion temperature of said material, introducing them into said fluidised bed while they are heated to above the fusion temperature of said material, and contacting at least one surface thereof with said fusible material thereby fusing said material on to the surface. The sheets may be of metal, for example steel, aluminium, or zinc; of glass, wood, paper, high melting molded resin or heat resistant fibrous material.  Suitable coating materials include bitumen, shellac, silicone resins, acrylic resins, polystyrene, polyamides, polyvinyl chloride, polyvinyl chloride acetate copolymer, polyvinyl butyral, cellulose acetate butyrate, epoxy resins or low melting point metals such as zinc, lead or tin also inorganic materials such as glass.  The sheets are pre-heated preferably by infra-red heating and then immediately immersed in the gas-fluidized bed of pulverulent coating material.  If a thermosetting coating material is used the coated sheets are heated in order to cause the coating to set. Preferably the temperature to which the sheets are heated is considerably in excess of the sintering or melting temperature of the coating material.  In order to apply a coating to one side only of a sheet two sheets may be immersed in the fluidized bed back to back. Specification 759,214 is referred to.ALSO:Sheets are coated by fluidizing a bed of pulverulent, dry, free-flowing, fusible material, heating said sheets to above the fusion temperature of said material, introducing them into said fluidized bed while they are heated to above the fusion temperature of said material, and contacting at least one surface thereof with said fusible material thereby fusing said material on to the surface.  The sheets may be of metal, for example steel, aluminium, or zinc; of glass, wood, paper, high melting moulded resin or heat-resistant fibrous material.  Suitable coating materials include low melting-point metals such as zinc, lead or tin.  The sheets are pre-heated preferably by infra-red heating and then immediately immersed in the gas-fluidized bed of pulverulent low-melting metal.  Preferably the temperature to which the sheets are heated is considerably in excess of the sintering or melting temperature of the coating metal.  In order to apply metal to one side only of a sheet two sheets may be immersed in the fluidizing bed back to back.
Patent GB-1039083-A (GB)
Title: Protective coatings for photographic prints
Inventor: HIMMELMANN WOLFGANG
IPC: G03C11/10
Filed: 1963-05-01
Abstract: 1,039,083. Photographic materials. AGFA A. G. May 1,1963 [May 2, 1962], No. 17238/63. Heading G2C. Photographic prints are given a protective coating on one or both sides comprising a copolymer of 80-92% vinyl chloride, 7. 5-19. 5% vinyl acetate and 0. 5-5% vinyl alcohol or an unsaturated aliphatic dicarboxylic acid or anhydride such as maleic acid or anhydride. The coating may contain a phthalic acid ester as plasticizer,finely divided silica, titanium dioxide, zirconium dioxide or aluminium phosphate as a melting agent, and an U.V. absorbing compound (for example those described in Specifications 926,454 and 948,627) such as 2, 4<SP>1</SP>-dihydroxy-3<SP>1</SP>, 5<SP>1</SP>-di-t-butyl-benzophenone.