baber/WOPTO huggingface dataset:
Patent GB-1045639-A (GB)
Title: Process for producing trioxane
IPC: C07D323/06
Filed: 1964-07-07
Abstract: Trioxane is produced by a process which comprises contacting gaseous monomeric formaldehyde, optionally in admixture with an inert gas, with a catalyst which is a Lewis acid at a temperature from 60 DEG to 150 DEG  C., the catalyst being substantially non-volatile under the reaction conditions and preferably supported on a carrier.  The trioxane is advantageously removed continuously from the reaction zone as it is formed and separated from the gaseous reaction products by means of a chlorinated hydrocarbon. Preferred catalysts comprise H2SO4, H3PO4 and supports may be SiO2, charcoal and Al2O3. The formaldehyde feed may contain up to 20% H2O vapour by weight and not more than 3% methanol.  In the examples, which include comparative data showing the inertness of SiO2, the use of H3PO4 on SiO2, H2SO4 on SiO2 gel, ZnCl2 on SiO2 gel and a sulphonic acid ion exchanger is described.
Patent GB-934501-A (GB)
Title: A new or improved cattle crush
Inventor: PERROTT ALBERT
IPC: A01K1/06
Filed: 1958-09-01
Abstract: 934,501. Animal holding appliances. SIMPLEX DAIRY EQUIPMENT CO. Ltd. Sept. 7, 1959 [Sept. 1, 1958; March 4, 1959], Nos. 28076/58 and 7560/59. Class 81 (2). A cattle crush has a rear entry opening and a front exit opening controlled by a gate 1, an arm 2 being pivotally mounted on the crush frame so that when it is swung across the opening towards a vertically extending side it forms a neck yoke with a vertically extending surface. The gate 1 covers the lower part of the front opening which is formed by a frame 4. The arm 2 is pivoted to the top portion of the frame 4 and may be pulled against a spring 5 by a rope 8 to clamp the neck of an animal against a vertical member of the frame. The free end of the arm 2 slides in a gap G between the top of the gate and a bar 6 and in a gap Ga between one side of the frame and a bar 7, the bars 6, 7 forming a reaction support which takes a major part of the thrust exerted by the animal in endeavouring to free itself. The gate is opened by a rope 10 which with the arm-operating rope 8 is controlled from the rear of the crush. In an alternative construction, the arm is pivoted to a lower side member of the crush and when it is swung across the opening above the gate forms a yoke with an upward extension of the gate.
Patent GB-999794-A (GB)
Title: Improvements in or relating to the production of an antibiotic containing a cyclopentanophenanthrene nucleus and salts thereof
Inventor: KIRK INGER
IPC: C07J13/00
Filed: 1961-08-02
Abstract: Fusidic acid which is an antibiotic designated ZN-6 and contains a steroid nucleus is prepared by growing a mutant of the fungus Fusidium coccineum Fuck K. Tubuki capable of forming the said antibiotic under aerobic conditions in an aqueous nutrient solution containing sources of carbon and nitrogen and inorganic salts, the fermentation being continued until a substantial antibiotic activity has been imparted to said solution and recovering the antibiotic therefrom.  The mutant of the fungus may be obtained by irradiating a spore suspension with ionizing or non-ionizing rays or the spores may be exposed to the action of mutagenic chemicals such as diethyl sulphute or mustard gas.  The antibiotic may be isolated from the solution by filtering, and either adding an adsorbing agent to the filtered solution and eluting the antibiotic therefrom, or adding an amine or an amine salt to convert the antibiotic into a form soluble in an organic solvent which is substantially water immiscible. Alternatively an acid may be added to the filtered broth to ensure that the antibiotic is present as the sparingly water-soluble free acid. Specific mutants of the above fungus are designated Leo-U42, Leo-U79 and Fc-U 404 and are deposited at the Commonwealth Mycological Institute.  Specification 930,786 is referred to.
Patent GB-477721-A (GB)
Title: Improvements in and relating to magnesium base alloys
IPC: C22C23/00
Filed: 1936-10-16
Abstract: Magnesium alloys contain 2-12 per cent of aluminium, 4-12 per cent of tin, and 0,5-12 per cent of silver with or without up to 2 per cent of manganese, up to 3 per cent of zinc, cadmium, antimony, arsenic, bismuth, and lead, and up to 1 per cent of silicon and copper.  Minor amounts of boron, chromium, titanium, cerium, and thorium may also be present.  The maximum total of aluminium, tin, and silver is 20 per cent  The alloys may be heat-treated for about 20 hours at 450 DEG C., followed by treatment at 130-350 DEG  C., for example at 250 DEG C. for 15 hours.
Patent GB-849862-A (GB)
Title: "electrical comparator network"
IPC: G06F7/02
Filed: 1958-09-02
Abstract: 849,862. Digital electric calculating-apparatus. WESTERN ELECTRIC CO. Inc. Sept. 2, 1958 [Sept. 16, 1957], No. 28163/58. Class 106(1). An electrical comparator network for obtaining the difference between two binary numbers comprises digit comparison circuits including digit registers to which corresponding digits of the two numbers are consecutively applied, the registers providing signals indicating any mismatch between the two digits, and the comparison circuits being so interconnected under control of means for determining the sign of the difference as to apply to an output circuit signals, selected in dependence on the mismatch signals, which together indicate the magnitude of the difference. The comparator network shown comprises stages A, B ... N to which are applied the digits a 1 , a 2  ... a n  and n b 1 , b 2  ... b n  of the two binary numbers to be compared. In each stage, the digits, such as a n , b n  are applied in succession to a bi-stable circuit such as 100 which supplies an output signal to line 112 if it receives a " 1 " followed by a " 0 " and to line 113 for a " 0 " followed by a " 1." The two numbers are applied also to a comparator network 105 as described in Specification 836,234 which provides an output on line 120 or 121 according to whether the number a 1 -a n  is greater or less than the number b 1 -b n . These lines control AND gates such as 125, 126 in a carry portion of each stage (except the highest stage A) whereby one of the bi-stable circuit outputs for that stage is selectively applied to an exclusive OR circuit, comprising a pair of inhibitor gates such as 138, in the next higher stage. These gates produce an output if there is a mismatch (output from the bi-stable circuit) in that stage or a carry from the preceding stage, but not both. The outputs of the inhibitor gates and of the stage N bistable circuit 100 are applied through OR circuits to resistors R 1  ... R 8 , having values weighted according to the corresponding binary powers, forming a digital-to-analogue converter 150. A voltage signal is thus obtained on output lead 180 corresponding to the magnitude of the difference between the two numbers. The comparator may be employed for address selection in a C.R.T. storage system.
Patent GB-449602-A (GB)
Title: Improved method of, and means for, tempering glass
IPC: C03B27/02
Filed: 1934-10-03
Abstract: 449,602. Tempering glass. PERRY, H., Sononama, Airdale Road, Stone, Staffordshire, and GROTEFELD, A. W., 82, Tixall Road, Stafford. Oct. 3, 1934, Nos. 28259/34, 15951/35, and 16181/35. [Class 56] [See also Group XXIX] In a process for tempering glass sheets, the cooling medium comprises an aqueous liquid in a fine state of division. Preferably, water is used and it is sprayed on to the hot glass by means of high pressure jets of air. In the arrangement shown in Fig. 1, a sheet of glass is suspended in a furnace 15 from a carriage running on a rail 22 and when sufficiently heated is moved endwise, by operation of an endless band 98, into the cooling apparatus 16 where it is sprayed on both sides by nozzles 64, Fig. 2, mounted on a frame 49 reciprocated horizontally by crank mechanism so as to distribute the water uniformly over the glass. The sheet may be steadied by wire rods 93 supported one on either side of the sheet near its lower edge. The sprayer comprises a tube 65, Fig. 6, supplied with air under pressure through a cock 67, and furnished with a head 75 having an inturned frusto-conical end 76 and a central aperture through which extends an adjustable nozzle 74 communicating with a water supply through a flexible tube. The air passes to the central aperture through two ducts 79, and additional holes 82 produce air jets at an angle so as to give the spray a transversely elongated form. Specification 449,864 is referred to.
Patent GB-1244694-A (GB)
Title: Improvements in and relating to containers and closures therefor
Inventor: MISKIN BRIAN LESLIE
IPC: B65D43/02
Filed: 1969-06-04
Abstract: 1,244,694. Container closure. JOHNSEN & JORGENSEN (PLASTICS) Ltd. 4 June, 1970 [4 June, 1969], No. 28286/69. Heading B8T. In a container and closure cap 12 therefor, the container has at least one circumferential projection (42), Fig. 2 (not shown), adjacent its open end, the weakened line of junction between cap and tear band 18 coinciding in part with the apex of the said projection, the cap having a skirt 16 with a plurality of depending ear portions 71 positioned to overlap the projection and thereby retain the cap on the container when the tear band is removed. The skirt bottom may be tapered at 46 at the junction with the tamper-proof band 18, the band being defined by a top score line 20, which is castellated to leave the downwardly depending ears 71 on the skirt when the band is removed, and a bottom score line 26 extending firstly parallel to the major part of the first line and then angling off to the bottom of the band, the circumferential groove 44 at the junction of the skirt bottom and band being located on a projecting flange (42), Fig. 2 (not shown), on the container (30). Ears (271), Fig. 13 (not shown), having inwardly projecting lips (277) may be pre-formed on the skirt and separated from the band (218) by slits, the top score line (259) being interrupted by the slits. The cap may have a rib 50 which seals against the side of the container or is engaged in a groove (363), Fig. 14 (not shown), or abuts a container rib (463), Fig. 15 (not shown), and may be dished so as to form an anti-capillary seal with the container rim, Fig. 6 and Fig. 7 (not shown). The container wall may be thickened, and may have a further flange (241), Fig. 10 (not shown), to locate the tear band which may have a tab 22.
Patent GB-859011-A (GB)
Title: Improvements in or relating to cooking utensils
IPC: A47J43/22
Filed: 1958-09-04
Abstract: 859,011. Cooking vessels &c. HUTCHISON, J. S. F. Sept. 4, 1959 [Sept. 4, 1958], No. 28413/58. Class 66. A cooking utensil has two diametrically opposed portions of the side wall 2 formed, near the rim of the utensil, with a plurality of perforations or slots 1. Perforated or slotted covers 3 are mounted exteriorly of the utensil for sliding movement in such wise as to mask, partially mask, or fully to expose the perforations or slots in each of said portions of the side wall.
Patent GB-1309287-A (GB)
Title: Apparatus for rolling up articles
IPC: A61F13/15
Filed: 1970-06-11
Abstract: 1309287 Packaging rolled up articles ETABS RUBY SA 11 June 1970 [11 June 1969] 28418/70 Heading B8C Apparatus for rolling up an article 43, e.g. a sanitary towel, comprises a first pair of rollers 2 adjacent a spindle 1 of non-circular crosssection, and a second pair of rollers 18 movable to a position adjacent the spindle 1 and substantially diametrically opposite the first pair of rollers 2. The latter are carried on a shaft 4 spring urged towards the spindle 1 and engaged by one arm 11 of a lever the other arm 10 of which carries a roller 16 in contact with a cam 17. The second pair of rollers 18 are carried by an arm 19 supported by a roller 22 on a guide 23 and connected to a T-shaped lever carrying a roller 27 in contact with a cam 28. In operation, an article 43 is fed along a table 29 to a position between the first pair of rollers 2 and the spindle 1 and the apparatus is actuated. The cam 17 rotates so that the first pair of rollers 2 compress the article 43 against the spindle 1, the cam 28 rotates to move the second pair of rollers 18 to the right and upwards to a position over the spindle 1 so as to fold the end of the article 43 over the spindle 1, and the spindle 1 rotates to roll up the article 43 which is compressed by the weight of the second pair of rollers 18. A cam 35 on the shaft 4 then operates a switch 33 to stop the spindle 1. A pneumatic or hydraulic jack 42, Fig. 5, is then actuated to extend a member 38 which pushes the rolled article through a funnel 46 and into a carton 47.
Patent GB-301719-A (GB)
Title: Improvements in cathode ray tubes
IPC: H01J33/04
Filed: 1928-02-29
Abstract: 301,719. Potts, H. E., (Plauson, H.). Feb. 29, 1928. Divided on 299,735. Vacuum tubes.-The window of a cathode-ray tube is made of beryllium, or of an alloy containing a large proportion of beryllium, for example 95-98 per cent of beryllium and 2-5 per cent of aluminium to which a small quantity of magnesium may be added. The window may be coated with a thin laver of a resistant metal such as gold, platinum, nickel, or cobalt. Specification 299,735 is referred to.
Patent GB-1150834-A (GB)
Title: Method of fabricating semiconductor devices
IPC: H01L21/00
Filed: 1967-06-20
Abstract: 1,150,834. Semi-conductor devices. RADIO CORPORATION OF AMERICA. 20 June, 1967 [5 Oct., 1966], No. 28474/67. Heading H1K. A photomask 50 used in semi-conductor device manufacture has at least one opaque portion 52 aligned with a corresponding aperture 38 which has been initially opened in a first masking layer 33 and subsequently closed by a second masking layer 40, the opaque portion 52 being larger in area than the aperture 38 so that any slight misalignment is accommodated and the aperture 38 can be accurately reopened. The embodiment comprises an NPN transistor, formed from a Si wafer carrying a grown or deposited first masking layer (33), Fig. 4 (not shown), of silicon dioxide or nitride. Apertures (36, 38) are opened simultaneously in the layer (33) by a photolithographic process using a single photomask, and a second thinner oxide masking layer (40), Fig. 5 (not shown), is deposited to cover the entire surface, including the apertures. Two apertures (38) are then opened again, leaving the third one (36) closed, by a photolithographic etching process using the photomask 50, Fig. 6. P+ contact regions (28), Fig. 8 (not shown) are diffused from vapour through the apertures (38), suitable dopants being B, Al, Ga, or In. The layer (40) may be removed at this stage from the aperture (36) by the same technique as that used for apertures (38). Alternatively the remaining portion of layer (40) may be left on until after the next step. A further oxide layer (60), Fig. 10 (not shown), is then deposited, and the aperture (36) reopened again, also using the same technique as above. The P type base region (24) is then formed by B-diffusion through the aperture (36), linking with the P+ contact regions (28). In an alternative step the apertures (38) may be left open during diffusion of the base region (24), further enhancing the conductivity of part of the contact regions (28). The N+ type emitter region (22), Fig. 11 (not shown), is diffused into the base region (24), through the same aperture (36), the dopant being P, As or Sb, and the remaining oxide masks are removed, leaving only the original masking layer (30). Al or Au electrodes are then applied, excess material being etched away using a suitable mask. Several such transistors may be formed in a single Si slice, and subsequently separated by dicing.
Patent GB-781458-A (GB)
Title: Improvements in and relating to thread illuminators for textile machines
Inventor: MEINERS CARL OTTO
IPC: D01H13/16
Filed: 1953-10-15
Abstract: 781,458. Lamps MEINERS OPTICAL DEVICES, Ltd. Oct. 11, 1954 [Oct. 15, 1953; Dec. 3, 1953], Nos. 28477/53 and 33700/53. Class 75(4) [Also in Group IX] An illuminator adapted to be mounted on a spinning or twisting frame so as to project a beam along the frame to illum- ,inate the threads comprises a casing' which houses a source of light having a brightness of at least 2000 stilb and emitting short wave rays in the blue and blue/green range of the spectrum. and a dioptric system located between the source and an outlet in the casing and projecting a beam which is either parallel or converges at a point not less than twenty-five feet from the source. The illuminator may produce four parallel beams. The illuminator shown has two dioptric systems to provide two parallel beams one for each side of a double-sided frame, each system comprising an apertured plate 26 in a trunk 24 extending from a central housing 20 for a mercury vapour discharge lamp 22 and a bi-convex lens 30 in one face of the trunk. A plane mirror 28 in the trunk reflects the light from the aperture through 90 degrees on to the lens. Alternatively the lens may be located in the trunk between the apertured plate and the plane mirror and the light emitted through a glass plate in an aperture in the trunk. A plano-convex or a bi-convex collector lens may be located between the apertured plate and the lens 30. A further plane mirror may be located outside the trunk to reflect the light therefrom through 90 degrees. The light from the apertured plate may be reflected through 180 degrees on to the lens 30 by a prism within the trunk. The lenses 30 and the plane mirrors 28 may be mounted on members of square cross section adapted to slide on and off the ends of the trunks whereby the direction of the emitted beams relative to the casing can be altered. The illuminator is mounted at or above one end of the frame and the beams may be reflected back along the frame by reflectors at the other end thereof.
Patent GB-617292-A (GB)
Title: Improvements relating to the electro-deposition of chromium
IPC: C25D3/04
Filed: 1946-09-24
Abstract: 617,292. Electrolysis. BERGER, P. Sept. 24, 1946, No. 28482. [Class 41] An electrolyte for use in the electro-deposition of chromium comprises an aqueous solution of chromic acid together with hydrofluosilicic acid and a small proportion of one or more molybdenum compounds soluble in the electrolyte. The preferred compound is ammonium molybdate. The chromic acid may be between 100 and 600 grammes per litre of water, the hydrofluosilicic acid from 1 to 10 per cent of the total weight of chromic acid, and the molybdate from .5 to 10 grammes per litre of the total volume of electrolyte.
Patent GB-1048771-A (GB)
Title: Tape dispenser
IPC: G06K13/26
Filed: 1963-07-19
Abstract: 1,048,771. Feeding webs. R. D. LACY. Oct. 16, 1964 [July 19, 1963; June 13, 1964; Jan. 15, 1964], Nos. 28565/63, 1785/64 and 24626/64. Heading B6B. A tape supply coil J is mounted on three out" wardly spring-loaded pins projecting from a brake drum D 1  or an axially compressible soft rubber bush projecting from the flange. The drum D is mounted on a shaft P 3  and constitutes a brake drum acted on by a brake shoe B carried on a lever A 1  pivoted at P 1  and urged against the drum by a spring S 1 . The tape W passes over capstans C 1 -C 4  and over a roller R 1  on the arm A 1  to form a loop. The capstans are driven by an electric motor through a slip clutch. Increase in tape tension due to a demand for tape to be fed to a tape utilizer shortens the loop and releases the brake. Limit stops H 1  and H 2  are provided for the lever A 1 , and the tape also passes over a roller R 2  on a lever A 3  pivoted at P 4  and urged clockwise by a spring S 2 , thus avoiding excessive loading of the tape.
Patent GB-919935-A (GB)
Title: Improvements in and relating to getter devices
IPC: H01J29/94
Filed: 1961-08-08
Abstract: 919,935. Discharge apparatus. S.A.E.S. S.p.A. Aug. 8, 1961 [April 8, 1961], No. 28573/61. Drawings to Specification. Class 39 (1). A getter device, especially for cathode-ray tube receivers, is of ring shape and comprises an annular container and a deflector which directs the getter vapour inwards and outwards but prevents it from issuing directly upwards. Getter material may be in the deflector as well as in the container. The deflector may have non-vaporizable mixed with vaporizable getter material, e.g. Al mixed with Ba. The A1 may be evaporated before or simultaneously with the Ba. The deflector may be of U or V section and the container is of U-section. The getter is of Ba and is deposited on the neck, screen and cone of the tube. The A1 coating on the screen may reduce ion burn in known manner. The getter container may have inclined fins to direct the getter vapour. The deflector may be off-centre for the same purpose. The deflector and getter container may be formed integrally with one another or the deflector is made afterwards. There may be clamps or welds between the deflector and getter container; a tongue may act as a common support for them. The getter may be evaporated from an alloy. The tube may have one or three electron guns.
Patent GB-323280-A (GB)
Title: Improvements in or relating to fastenings for trunks, cases, boxes and like receptacles
IPC: E05C19/14
Filed: 1928-10-05
Abstract: 323,280. Bailey & Co., Ltd., J., and Powell, H. G. Oct. 5, 1928. Hasp fastenings; hasp locks. - Box or case fastenings, of the kind comprising a pivoted stirrup or yoke 11 engaging a hook or projection 10<a>, have abutments which prevent the sides of the yoke being forced laterally outwards. The abutments 16<b> may be provided on the sides of the casing 16<a> forming the bearings for the lever 14<a> carrying the yoke 11, Fig. 4, or on the'sides of the lever 14a itself, Fig. 5. Alternatively, the abutments may be constituted by pins or studs riveted to the base 8. A lock may be combined either with the base 8, Fig. 4, and engage a. notch 14<g> on the lever 14<a>, or with the casing 16<a>, Fig. 7, the bolts 12<b> engaging over the side arms of the yoke. The yoke ends within the lever 14<a>, may be burred over.
Patent GB-187628-A (GB)
Title: Improvements in and relating to press-spahn
IPC: H01B3/48
Filed: 1922-10-21
Abstract: 187,628. Janser, J. Oct. 22, 1921, [Convention date]. Boards and compound paper; paper, treating with special materials.-In the manufacture of a substitute for " press-spahn " which is water resisting and suitable for all purposes, finished paper or board is impregnated with a mixture of a wax or soap such as potassium or sodium cerotate, with a binding medium such as size and chrome alum, or casein and borax, a colouring matter, and talcum. After drying, the surface is rubbed down and smoothed by calendering, and the pores thus closed. To produce a good insulator, the material is oiled after impregnation. A harder product is obtained by uniting two or more layers of paper with iron resinate or other lac-like substance mixed with a little oil, and impregnating and finishing the product as above described. The Specification as open to inspection under Sect. 91 (3) (a) refers also to glue and formaldehyde as a suitable size, metallic compounds of aniline colours for colouring, barium sulphate, calcium carbonate and precipitated aluminium hydroxide as filling substances, and, as oils, linseed oil, train oil, and paraffin oil. This subjectmatter does not appear in the Specification as accepted.