baber/WOPTO huggingface dataset:
Patent GB-987343-A (GB)
Title: Processes for the treatment of glucamylase-containing enzyme preparations and their use in starch hydrolysis
IPC: C12P19/20
Filed: 1963-07-25
Abstract: Dextrose is obtained by the enzymatic hydrolysis of starchy materials using a glucamylase-containing enzyme preparation of fungal origin, e.g. derived from culture filtrates of Aspergillus niger, A. usamii, A. diastaticus or A. phoenicis, in which the transglucosidase has been inactivated by pH adjustment (to pH 9-11) at 20-55 DEG  C. (see Division C3).ALSO:The transglucosidase enzyme present in glucamylase-containing furyal enzyme preparations is deactivated by adjusting the pH of the preparation in aqueous medium to a value in the range pH 9-11 whilst maintaining the temperature at between 20 DEG  and 55 DEG C. Preferably the pH is adjusted with magnesium oxide either alone or together with other alkaline agents, e.g. the hydroxides and carbonates of lithium, sodium and potassium or ammonium hydroxide. The enzyme preparation may be one obtained from culture filtrates of Aspergillus niger A. usamii, A. diastaticus or A. phoenicis and the treated preparation may be used to obtain dextrose in good yield by the enzymatic hydrolysis of starchy materials.
Patent GB-1217769-A (GB)
Title: A multiple push-button electric switch assembly
IPC: H01H1/20
Filed: 1968-06-20
Abstract: 1,217,769. Electric switches &c. SIEMENS A.G. 20 June, 1968 [20 June, 1967], No. 29546/68. Heading H1N. A push button-switch assembly comprises a cup-shaped housing 1 which is provided with a ring 2 screwed thereon for single hole-attachment to a switchboard or the like, and a plurality of push-buttons, e.g. 15, 16 which close the top of cup-shaped housing 1. Each pushbutton has a cylindrical stem 24 guided in an aperture 23 of a ledge member 18 which is held in housing 1 by the engagement of its lugs 20 in apertures 21 of the housing. Biasing springs 19 surround stems 24 and urge buttons 15, 16 upwards so that detent arms of the pushbuttons engage the underside of the ledge 18 and hold the buttons still. One push-button switch has an extension 29 which passes through a contact bridge 10 urged into engagement by spring 31 with fixed contacts 9. This contact set is opened on depression of button 15 by the engagement of bridge 10 by an annular abutment 34 of the push-button. The other pushbutton 16 has a normally open contact bridge 11 carried between a ring 35 glued to extension 29 and a pressure spring 32. Plug terminals 12 are plugged into a plug connector 13, 14.
Patent GB-951460-A (GB)
Title: Unsaturated halogenated steroids and process for their manufacture
IPC: C07J1/00
Filed: 1960-08-26
Abstract: The invention comprises steroids of the general formula: <FORM:0951460/C2/1> wherein R1 is H, b -OH or keto, and R2 is a free or esterified group, and the corresponding 1-dehydro steroids, and a process for the preparation of steroids of the general formula: <FORM:0951460/C2/2> wherein Hal represents bromine or chlorine, R1 represents =O or H, H or H, b -OH, R2 represents: <FORM:0951460/C2/3> H or acyl, R4 represents acetyl or -COCH2R6, R5 represents acetyl or -OR3, and R6 represents a free or esterified hydroxy group, by treating 6a , 7a -oxido-steroids of the general formula: <FORM:0951460/C2/4> wherein R1 to R6 have the above significance, with hydrochloric or hydrobromic acid to form the corresponding 6b -halogens-7a -hydroxysteroids, and reacting these steroids with an acid dehydrating agent such as hydrochloric or hydrobromic acid.  The above process may be modified in that the product is dehydrogenated to form a D  1, 4-unsaturated compound, for example, by a chemical dehydrogenating agent such as selenium dioxide or 2, 3-dichloro-5, 6-dicyano-p-benzoquinone, or by a microbiological dehydrogenating agent such as Bacillus sphaericus var. fusiformis. The products of any of the processes referred to above may be hydrolysed to convert 17- and/or 21-acyloxy groups into free hydroxy groups, or hydroxy groups at the 17- and/or 21-positions may be esterified.  6a , 7a -Oxido-steroids of the second general formula above are prepared by treating the corresponding D  4-steroids with chloranil or with N-bromo-succinimide and then dehydrobrominating in each case forming the corresponding D  4, 6-steroids, and treating these steroids with a per-acid.  Specification 914,784 is referred to.  Reference has been directed by the Comptroller to Specifications 890,315 and 890,835.
Patent GB-468915-A (GB)
Title: Method of and apparatus for synchronizing built up character printers
IPC: H04L21/04
Filed: 1936-10-30
Abstract: 468,915. Facsimile-printing telegraphs. LORENZ AKT.-GES., C. Oct. 30, 1936, No. 29559. Convention date, Oct. 31, 1935. [Class 40 (iii)] A recording device B, carrying a helical crest C, is clutched to a revolving shaft A by synchronizing signals in intervals between signals representing the lines which compose the characters. The characters are recorded on a tape which is advanced continuously. The clutch consists of a spring F coiled round the shaft and engaging it frictionally during one revolution of the shaft. At the end of each line the spring is held out of engagement by a stop n, and is released at the beginning of the next line by an electromagnet Q. The electromagnet also receives the character signals and moves an edge S co-operating with the helical crest. The crest has a recess b which the edge passes through on receipt of the synchronizing signal to act on a tappet a. The tappet acts on a leaf spring f carrying the stop.
Patent GB-617530-A (GB)
Title: Improvements in joints for tubes
IPC: F16L21/04
Filed: 1946-10-04
Abstract: 617,530. Tube joints. MIDLAND IRON & HARDWARE CO. (CRADLEY HEATH), Ltd., and RYLAND, G. A. Oct. 4, 1946, No. 29589. [Class 99 (i)] A joint between two plain tubes 12 comprises flange plates 10 engaging resilient washers 14 coacting with a sleeve 15 of less radial thickness than the washers so that the washers are compressed axially and expanded inwardly to seal the joints when the plates are stamped by bolts 17. The joints are visible so that inspection and maintenanec are facilitated.
Patent GB-1352437-A (GB)
Title: Rubber modified olefinic nitrile-vinyl aromatic-maleimide interpoly mers
IPC: C08F2/22
Filed: 1971-06-24
Abstract: 1352437 Graft polymers STANDARD OIL CO 24 June 1971 [22 Sept 1970] 29631/71 Heading C3G A resinous polymer is produced by polymerization of 100 parts by weight of (A) an olefinically unsaturated nitrile of structure wherein R represents hydrogen, a C 1  to C 4 -alkyl group or a halogen, (B) 0À5 to 10 moles per mole of (A) of a vinyl or vinylidene aromatic monomer and (C) 0À2 to 2À5 moles per mole of (A) of maleimide in the presence of from 1 to 20 parts of a conjugated diolefin elastomer. Examples are given in which styrene, acrylonitrile and maleimide are polymerized in an aqueous emulsion containing polybutadiene or butadienestyrene copolymer.
Patent GB-537141-A (GB)
Title: Improvements in straight-bar knitting machines
IPC: D04B9/46
Filed: 1939-11-09
Abstract: 537,141. Knitting-machines. BLACKBURN & SONS, Ltd., G., START, H. W., and START, E. Nov. 9, 1939, No. 29685. [Class 74 (ii)] A straight-bar machine having two groups of needles for knitting the heel tabs to a stocking blank comprising a leg and foot portion is provided in each group with a sinker H' to draw a longer loop than the remaining sinkers H and so shaped that in co-operation with an associated knocking-over bit K<SP>2</SP>. the longer loop is held during the knitting motions of the machine so that a slack sinker wale is produced in each of the heel tabs. The sinker H<SP>3</SP> is provided with a shallower throat and a deeper nose than the remaining sinkers, and the knocking-over bit K<SP>2</SP> has its loop-engaging surface at a higher level than the remaining knocking-over bits K. Specification 180,773, [Class 74 (ii)], is referred to.
Patent GB-322590-A (GB)
Title: Improvements in gear cases for cycles or motor cycles
IPC: B62J13/04
Filed: 1928-10-15
Abstract: 322,590. Speedwell Gear Case Co., Ltd., Cutler, W. R., and Edwards, J. Oct. 15, 1928. Gear cases. - Sheet-metal gear cases for cycles, motorcycles, and the like consist of shaped plates having their edges joined continuously or at spaced positions by an electric fusing or welding operation as shown at 11 in Fig. 2 or at 3, 4 in Fig. 5. The edge 4 of the plate 1 in Fig. 5 is first bent over the edge 3 of the other plate. The edges may be welded as shown in Fig. 3 by passing them between rollers 5, 6 forming electrodes.
Patent GB-1112252-A (GB)
Title: Improvements in or relating to material comprising collagen fibres and the manufacture thereof
IPC: D04H1/58
Filed: 1965-07-14
Abstract: The Specification relates to a modification of the invention of the parent Specification 1, 024, 769. The process of forming fibrous sheet material, namely artificial leather, comprises the steps of forming an intermeshed fibrous mat in which the fibres at and adjacent one surface lie parallel to that surface and are oriented to resist lengthwise and widthwise forces exerted on the mat, impregnating the mat with an aqueous suspension of distinct swollen microscopic collagen fibres, and removing the water to reaggregate the collagen fibres to reinforce the intermeshed fibrous mat. The fibrous mat is impregnated, dried as by the addition of acetone then tanned, e.g. chrometanned or vegetable-tanned to give the appearance of leather.  The intermeshed fibrous mat may comprise two or more layers of fibres, one of which may be needled, or may comprise crimped fibres.  The intermeshed mat may comprise cotton, wool, polyamide (nylon), polyester, acrylic, cellulosic, or polypropylene fibres. Alternatively the mat may comprise collagen fibres heated to decrease their affinity for water.  The tanned sheet material may be fatliquored e.g. with acetone containing 4%, by weight, of dissolved oleic acid, dried in air, and coated with an alkoxy derivative of nylon.ALSO:The specification relates to a modification of the invention of the parent Specification 1,024,769.  The process of forming fibrous sheet material comprises the steps of forming an intermeshed fibrous mat in which the fibres at and adjacent one surface lie parallel to that surface and are oriented to resist lengthwise and widthwise forces exerted on the mat, impregnating the mat with an aqueous suspension of distinct swollen microscopic collagen fibres, and removing the water to reaggregate the collagen fibres to reinforce the intermeshed fibrous mat.  The fibrous mat is impregnated, dried as by the addition of acetone, then chrome-tanned to give the appearance of leather.  The intermeshed fibrous mat may comprise two or more layers of fibres, one of which may be needled, or may comprise crimped fibres.  The intermeshed mat may comprise cotton, wool, polyamide, polyester, acrylic, cellulosic, or polypropylene fibres.  Alternatively the mat may comprise collagen fibres treated to decrease their affinity for water.
Patent GB-1485884-A (GB)
Title: Anode for electrolytic cells
IPC: C25B11/04
Filed: 1975-07-16
Abstract: 1485884 Anodes HOOKER CHEMICALS & PLASTICS CORP 16 JULY 1975 [2 Aug 1974]  29900/75 Heading C7B  An anode for a chloro-alkali cell comprises a valve metal (Ti, Ta, Nb or Zr) substrate, a coating thereon of conductive SnO 2  which may contain a minor amount of dopant, and an outer coating of a Pt group metal, alloy or oxide e.g. RuO 2 . The substrate e.g. of Ti may be provided with a Cu core. The dopant may be a fluoride, e.g. of Na, K, Li, Be, Al, Pb, Cr or Ca, hydrazine, phenylhydrazine, phosphorous (oxy)chloride, ammonium phosphate, an organic P ester e.g. tricresyl phosphate, or a compound of Te, W, Sb, Mo and/or As, preferably between 0À1 and 20% Sb 2 O 3 . The substrate may be degreased and etched in oxalic acid, prior to coating e.g. by applying (painting, brushing, dipping, rolling, spraying) a solution of thermally decomposable inorganic or organic salt or ester of Sn and dopant, e.g. their chlorides, alkoxides, alkoxy halides, resinates or amines, such as SnCl 4 , (butyl) 2  SnCl 2 , Sn (EtO) 4 , SbCl 3  or Sb 2 Cl 5  in a C 2-5  alcohol, toluene, benzene or water, drying and heating in an oxidizing atmosphere. The SnO 2  coating may also include up to 3% of a chlorine discharge catalyst e.g. at least one Mn, Fe, Co or Ni difluoride. The outer coating may be applied by electro-plating, chemical deposition, spraying or electro-phoretic deposition. The substrate may be Ti mesh. Comparison anodes are specified containing only a coating of SnO 2  or RuO 2  on Ti.
Patent GB-192206-A (GB)
Title: Improvements in or relating to heaters for liquids
IPC: F24H1/20
Filed: 1921-11-09
Abstract: 192,206. Clark, W. F. Nov. 9, 1921. Heating by electricity.-A water heater comprises a lagged container 1, Fig. 1, within which are mounted circulation tubes 9 each of which is encircled by a cylindrical electric heater 10. The tube 19, containing volatile liquid, of a thermostatic device is mounted in a tubular T-piece 16 through which the cold water is admitted to the container 1. The temperature-controlled pressure in the tube 19 is communicated to a Bowdon tube within the casing 21, the free end of which operates a pin 20a, Fig. 3, of a switch controlling the number of heaters 10 in use at one time. Three heaters 26, 27, 28 are shown diagrammatically and are controlled by the switch 38 which cuts out the heaters in succession on a rise of temperature actuating the Bowden tube pin 20<a>. The heaters may also be separately cut out by the hand switches 35, 36, 37. In a modified arrangement one coil can be left permanently in circuit while the others are successively operated by the thermostatically controlled switch.
Patent GB-660764-A (GB)
Title: Improvements relating to photographic contact printing apparatus
IPC: G03B27/22
Filed: 1949-11-23
Abstract: 660,764. Photographic contact - printing apparatus. PATIENCE, W. R., and PATIENCE, E. S. Nov. 23, 1949 [Nov. 24, 1948]. No. 30074/49. Class 98 (ii). Apparatus in which the copy material is fed in contact with the light-sensitive material between a transparent roller and a roller having a soft surface of resilient material, the printing lamp being disposed at the side of the transparent roller opposite the soft surfaced roller. Transparent or opaque originals may be copied by transmitted light or by reflex action respectively. A page of a book may be copied without removing it from the book. As shown, a transparent roller 18 and a roller 25 are supported on shafts journalled in uprights 11, 12. Roller 25 has a solid core thickly covered with rubber or the like which is deeply indented by the roller 18. A tubular lamp 40 is supported at the side of roller 18 opposite roller 25, in a housing supported between the uprights and having a semicylindrical top with sides extending into the vicinity of roller 18, having adjustable baffles contacting roller 18. The rollers are geared together by gears 32, 33 and driven through reduction gearing 35 by an electric motor 34, which may be reversed by a switch 38. The speed of the motor and the current supplied to the lamp 40 are varied by series rheostats 37, 66. The copy and sensitive material are fed between the rollers, being supported before and after they pass through on platforms supported between the uprights. When a page of a book is being copied and the adjacent pages approach the rollers, they press a pivoted bar 75 which moves to operate switch 38, which reverses the motor to retract the copy, and may also switch off lamp 40. The lamp socket 41 is supported in a cup-shaped member 42 mounted in an aperture in the upright 11, which also supports one end of a transparent cylinder 47, surrounding the lamp, the other end being supported by a collar 48, in an aperture in the upright 12. Air, which may first be filtered, is blown through apertures in the member 42 and along the cylinder 47, to cool the lamp. A glass plate 70 may be mounted between cylinder 47 and roller 18 to prevent heat from the lamp from reaching the roller. A cylinder 50 may surround the cylinder 47, mounted on member 42 and collar 48 and rotatable by a knurled disc 51 extending through a slot in the housing. The cylinder 50 comprises three filters which may be placed selectively in the path of light from the lamp to the roller 18 for making colour separation negatives.
Patent GB-1242789-A (GB)
Title: Process for preparing diorganozinc compounds from organobromide and organoiodide
IPC: C07F3/06
Filed: 1969-06-13
Abstract: 1,242,789. Di-organo zinc compounds. INTERNATIONAL LEAD ZINC RESEARCH ORGANISATION Inc. 13 June, 1969 [21 Jan., 1969], No. 30111/69. Heading C2J. Di-organo zinc compounds are prepared by mixing an organobromide and an organoiodide with an alloy comprising zinc and at least one alkali metal selected from sodium potassium and lithium and refluxing the mixture at 40- 180‹ C. until the refluxing ceases. The organo groups have 1-8 carbon atoms and are alkyl groups, alkenyl groups in which the double bond is more than two carbon atoms removed from the zinc atom or alkynyl groups having interval C#C bonds. The zinc/alkali metal alloys contain 1-3 wt. per cent Na; 0À5-5À0 wt. per cent K; and 1-10 wt. per cent lithium. The molar ratio of organobromide to iodide is from 1: 1 to 20: 1 and the molar ratio of zinc to the organobromide and iodide is at least 1: 1. Ternary alloys may also be used to produce the diorgano zinc compounds. These are made by treating, e.g. a zinc/sodium alloy with HgCl 2  to give a Zn/Na/Hg alloy. The refluxed mixture is distilled under reduced pressure in the absence of moisture to separate the volatile di-organo zinc compound. A diorgano zinc compound can be added to the reflux mixture to remove traces of moisture.
Patent GB-799293-A (GB)
Title: Improvements in or relating to processes for producing transistors
IPC: H01L29/06
Filed: 1955-10-21
Abstract: Alloys used for the production of hook collectors in transistors (see Group XXXVI) by fusion with the surface of a semiconductor body are as follows: 99 per cent Al with 1 per cent As: 99.99 per cent In with 0.01 per cent As or P: 99.8 per cent In with 0.2 per cent Sb.
Patent GB-724388-A (GB)
Title: Pad for use with flat bottomed rails
IPC: E01B9/68
Filed: 1953-10-31
Abstract: 724,388. Railway chair pads. CLYDE RUBBER WORKS CO., Ltd., and HANNAH, D. M. Oct. 31, 1953, No. 30140/53. Addition to 678,731. Class 104 (2). The rail pad of resilient material of the parent Specification formed on each face with parallel grooves, the grooves 3 on face 1 being disposed at right angles to the grooves 4 in the other face 2 is modified by the upper and lower faces 1, 2 of the pad being made parallel and by the sides of the grooves converging towards the groove bottom which is parallel to the respective face.
Patent GB-1012836-A (GB)
Title: Safety front jaw for ski bindings or fastenings
IPC: A63C9/00
Filed: 1962-08-07
Abstract: 1,012,836. Ski-bindings. H. MARKER. Aug 7, 1962 [Aug 12, 1961: May 30, 1962], No. 30148/62. Heading A6D. A movable member carrying a front jaw for ski bindings is arranged to be deflectable in a lateral direction about a vertical pin when under excessive torque, the said member having at least one inclined surface spring-biased towards a cooperating inclined surface whereby the said member is urged back to its normal position. In the first embodiment, Figs. 1 and 4,the movable member 4 carrying the jaw 16 has a double inclined under surface in the form of a shallow V and this is pressed against a base member 2 of co-operatin configuration by a spring 5 whose tension is adjustable by means of a nut 6. Thus when the member 4 is angularly displaced it will return, when freed of obstruction, to its normal piston, in which position a ball catch 9, 10, 11 locks it. The jaw 16 is similarly secured to the member 4 so that when the member 4 is deflected clockwise, as viewed from above, the jaw is deflected counterclockwise, and vice versa. A second embodiment is described with reference to Fig. 3 (not shown) in which a single inclined surface is employed. The adjustment of tension of springs 5, 21 may be by multisurfaced cams 29.
Patent GB-215675-A (GB)
Title: Improvements relating to scrapers for disc ploughs
IPC: A01B15/16
Filed: 1923-11-30
Abstract: 215,675. Fowler & Co. (Leeds), J., and Royston, M. H. Nov. 30, 1923. Scrapers for disc ploughs are mounted in such a way that they are adjustable vertically and are self-adjusting to the surfaces of the discs. The scraper F is pivotally and adjustably mounted on the vertical part of an arm D, pivoted about an horizontal axis in an extension B<1> of the disccarrying bracket B. The scraper F is held against the disc A by an adjustable spring G' connected to an adjustable oollar G on the arm D.
Patent GB-749397-A (GB)
Title: Improvements in or relating to bucky grid x-ray apparatus
Inventor: NEMET ANTHONY ANTAL
IPC: G21K1/02
Filed: 1953-11-02
Abstract: 749,397. X-ray apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 1, 1954 [Nov. 2, 1953], No. 30226/53. Class 98 (1). X-ray apparatus wherein a Bucky grid is reciprocated by a crank and connecting rod or equivalent mechanism includes means associated with the driving mechanism for initiating the exposure at a selected phase of the reciprocation cycle. By choosing the proper phase of the cycle it can be ensured that the speed of the grid during an exposure is such as to avoid strobe effects with the supply current frequency. It is found that for optimum results the exposure should be started 70 degrees after dead centre. As shown in Fig. 1, a crank 1 is connected by a rod 2 to the Bucky grid (not shown). A disc 4 of insulating material rotates with the crank and carries diametrically opposite contacts 5, which are connected together. The disc is surrounded by a housing 8 carrying brushes 7 which are pressed against disc 4 by springs 9, by which they are connected to leads 10. When the brushes 7 are bridged by contacts 5, a circuit is completed which initiates the X-ray exposure. The housing 8 is rotatable to vary the phase of the grid cycle at which the exposure begins, the delay which may occur between closing of the circuit and the emission of X-rays being allowed for. In a further development, housing 8 has an extension of reduced diameter on which is wound a cable for rotating the housing from a distance, and a cover for the housing supports the contact springs 9. Alternatively, the housing carries a rockable switch arm actuated by a cam on the crankshaft. The Bucky grid may be driven by an eccentric or a cam, instead of a crank and connecting rod.
Patent GB-526539-A (GB)
Title: Improvements in boxes or cartons for containing toilet powder and the like
IPC: A45D33/00
Filed: 1939-03-15
Abstract: 526,539. Boxes for powder &c. BITHREY, L. C., and WOOD, ROZELAAR & WILKES, Ltd. March 15, 1939, No. 30227. Divided out of 526,402. [Class 18] A box for toilet powder &c. has a pad c of flexible or resilient material arranged withir the slip-on lid to sea: the aperture b after its transparent covering has been broken.
Patent GB-602063-A (GB)
Title: Process for the manufacture of granular calcium nitrate with a low water content
IPC: C01B21/46
Filed: 1945-11-12
Abstract: In the production of granular calcium nitrate of low-water content, a solution is evaporated slowly and uniformly by temperature and pressure regulation so that the correspondingly slowly increasing viscosity of the melt attains 90 per cent concentration and at 130 DEG  C., a viscosity of at most 3 (the viscosity of a compressor oil of 25 Eugler degrees at 20 DEG  C., being taken as unity), whereby the melt during the evaporation process forms continuously an easily-stirrable coarse-crystalline paste, the calcium nitrate melt at 92 per cent concentration being divided up, and solidified in granular form.  Division may be effected after cooling to about 52 DEG  C. by spraying in centrifugal machines, or by pressing through perforated plates, and the divided material may be allowed to fall on already reduced and solidified calcium nitrate on vibrating plates. Evaporation up to 86-88 per cent concentration may be effected in evaporators with circulating pumps, and further up to 92 per cent in crystallizing stirring mechanisms, at 140 DEG  C. and 700 mm. pressure.