baber/WOPTO huggingface dataset:
Patent GB-307067-A (GB)
Title: New or improved apparatus for feeding paper to printing machinery
IPC: B65H35/06
Filed: 1929-02-21
Abstract: 307,067. Le Grand, R. P. A. March 2, 1928, [Convention date]. Feeding webs.-A printing-machine is provided with means for feeding paper from a roll intermittently and cutting it into sheets before it is passed to the printing-couple, means being provided to drive the feeding and cutting devices in synchronism. The feeding - apparatus comprises feedrollers 3, 4 and a pressure roller 5, normally held in friction contact by rubber bands 13 and driven continuously. Arcuate cams secured to the shaft of the roller 3 engage discs on tne shaft of tne rollers 4 to separate these rollers slightly at intervals to interrupt the feed of the web from the reel 19 and by changing the cams the length of web fed at each revolution of the roller 3 can be varied. The web passes from the rollers 3, 4 over a guide 40 and between a fixed knife 27 and a knife 29 carried by a head 28 which is reciprocated by cams 31 on a shaft 30 driven by gearing from the shaft of the roller 3. The supports 23 carrying the cutters are adjustable by a screw 38 in accordance with the lengths of the sheets being cut, so that the cut takes place when the front end of the sheet is in a position to be gripped by the rollers 42, 43 of the printing machine. A graduated scale may be provided on the bed of the machine to facilitate this adjustment.
Patent GB-939780-A (GB)
Title: Improvements in or relating to circuit arrangements for the conversion of analogue values into binary numbers
IPC: H03M1/00
Filed: 1962-02-15
Abstract: 939,780. Electric selective signalling systems. SIEMENS & HALSKE A.G. Feb. 15, 1962 [Feb. 17, 1961], No. 5827/62. Class 40 (1). In an analogue to digital converter of the kind in which the analogue signal is successively compared with a set of reference signals comparison is effected by means including a tunnel diode. The diode TD is first biased by a current from source U2 so that its low voltage maximum (U - ) occurs at zero analogue signal currentcurve 2. The analogue current is applied to the diode in the same direction as the current from U2. At t1 a trigger K1 is set to state " 1 " and gate G1 allows a current to pass to the diode. Resistor R1 limits the current to one-half the maximum analogue current measurable, i.e. ¢I, and the current acts in opposition to the analogue current-curve 3. Thus, if the analogue is greater than ¢ I voltage U+ appears across the diode. Amplifier V responds to this voltage by giving no output so that gate G5 is not enabled at t2 and K1 is not reset to zero. The most significant figure of the binary value is therefore "1." However, if the analogue is below ¢ I, V gives an output and K1 is reset at t2, to give a binary value " 0." At t3 the current from source U1 is increased by “ I to ¥ I- curve 4-if the previous digit was a " 1 " or to “ I if the previous digit was a " 0." This process continues until the current is digitized. At t9 the triggers are read out, and at t10 they are reset to the " 0 " state. A second embodiment, Fig. 3 (not shown), employs a delay between amplifier V and gates G5-G8. Only five outputs from TV are used, these setting the trigger of one side and also resetting (if necessary) the trigger of the previous stage.
Patent GB-768135-A (GB)
Title: An improved apparatus for playing an indoor game simulating football
IPC: A63F7/06
Filed: 1954-03-01
Abstract: 768,135. Table games. FULTON, R. J. Feb. 22, 1955 [March 1, 1954], No. 5883/54. Class 132(2). In a table game representing football in which a ball is projected over a board 10 by figures 13 each mounted on a spindle having a pulley beneath the board, the pulleys being connected in sets by operating cords 19 passing around them, the board is provided with depressions 21, one for each figure, so formed that the ball cannot come to rest outwith the radius of one of the figures.
Patent GB-674634-A (GB)
Title: A pyrophoric lighter for cigarettes, pipes, cigars and the like
IPC: F23Q2/06
Filed: 1949-03-03
Abstract: 674,634. Frictional lighters. QUERCIA, M., and MOREAU, R. March 3, 1949 [May 11, 1948], No. 5908/49. Class 75(iii) In a frictional lighter the body a is traversed by a chimney h into which the wick e extends, and which is closable by a member i slidable longitudinally in the upper part of the body a, the flint o being housed in a horizontal channel level with the chimney, and the flint wheel assembly, e.g. a flint wheel n, operating wheel p and mounting rod m, being vertically mounted in the outer surface of the lighter. Upward movement of the member i, the recessed lower end of which normally covers the wick e, is limited by the engagement of a spring k, housed in a groove therein with a groove in the upper part of the body. A head j on the member i forms a pipe ram, and a pipe-probing pin and a bevelled strip forming a pipe cleaner are housed in longitudinal recesses in the body a. The latter includes a fuel reservoir b closed by a force-fit washer f, the bottom of the body a being closed by a plug g. The pressure of the flint spring q is adjusted by turning a plug s by hand or by means of a screwdriver t carried by the plug g.
Patent GB-894899-A (GB)
Title: Continuous fermentation processes for the production of a chemical product
Inventor: PIRT STANLEY JOHN
IPC: C12M1/36
Filed: 1957-02-21
Abstract: <FORM:0894899/IV (b)/1> A continuous fermentation process for the formation of a given chemical product by the action of a microorganism is characterized in that the fermentation is carried out continuously in a first stage medium inoculated with the microorganism and simultaneously in a second stage medium fed continuously with medium from the first stage, the first stage being fed continuously with a growth medium favourable to the growth of the microorganism and medium being continuously withdrawn from the second stage whereby the volume of the medium in each of the first and second stages remains constant, the conditions in the first stage being maintained constant and more favourable than in the second stage for the growth of the microorganism, while the conditions in the second stage are maintained constant and more favourable than in the first stage for the formation of the chemical product.  The process may be used in the production of antibiotics, e.g. penicillin, enzymes and alcohols, e.g. 2,3-butanediol.  In the case of the production of 2,3-butanediol from a sugar such as sucrose using Aerobacter aerogenes NCIB8017, Pseudomonas hydrophilia or Bacillus polymyxa, the first stage is fed continuously with a growth medium containing 100 grm sucrose/litre and oxygen is passed at a take up rate of 25 to 100 millimols per litre medium per hour, while the dilution rate is between 0.1 and 0.3 litres per hour (medium flow rate per volume of culture), the two ratios increasing approximately in step with each other in these ranges, the temperature in the first stage being maintained at 30 DEG C.-39 DEG C. and the pH 4.8 to 6.0 and the volume of the medium in the first stage is maintained constant by feeding the second stage with medium from the first stage at the same rate as the first stage is fed with fresh growth medium. A temperature of 26 DEG C to 35 DEG C., a pH of 4.8 to 6.0 and an oxygen take up rate of 5 to 30 milimols/lire/hour is used in the second stage which is also supplied with additional sucrose. Apparatus for carrying out the above process comprises a first stage VI having a continuously fermenting culture medium which has been inoculated with the microorganism and a second stage V2 having simultaneously a continuously fermenting culture medium, a first continuous feed device R1 for supplying the first stage with a growth medium, a second continuous feed device R2 for supplying the fermenting culture medium continuously from the first stage to the second stage and means R3 for withdrawing medium continuously from the second stage whereby the volume of medium in each stage remains constant, a first control system P1 for regulating the conditions in the first stage to be constant and more favourable than in the second stage for the growth of the microorganisms and a second control system P2 for regulating the conditions in the second stage to be constant and more favourable than in the first stage for the formation of the chemical product.
Patent GB-910234-A (GB)
Title: Collapsible tower cranes
Inventor: BOHME WALTER
IPC: B66C23/34
Filed: 1959-02-20
Abstract: 910,234. Collapsible tower cranes. HEBEZEUGWERK SEBNITZ VEB. Feb. 20, 1959, No. 5953/59. Class 78 (4). An hydraulic jack 5 erects the mast 3 and luffs the jib 15 of a rotary tower crane. As shown, the jack 5 is pivoted to the same base 1 as the mast and acts on a block 7 sliding in a slot 6. After the mast has been secured in its erect position the luffing cable 11 is reeved over tackle formed by pulleys on the block 7 and pulleys 19 on the mast.
Patent GB-373633-A (GB)
Title: Dry rectifier
IPC: H01L25/03
Filed: 1931-02-26
Abstract: 373,633. Static contact rectifiers. LICHTENTHAL, E., (known as LINDEN, E.), 55, Dresdenerstrasse, Berlin. Feb. 26, 1931, No. 5980. Convention date, Feb. 26, 1930. [Class 37.] . A dry surface contact rectifier is supported in a framework constructed of material having a lower coefficient of expansion than that of the materials forming the cell units so that during working conditions the framework maintains the units under high compression without using springs. Metal wedges having a high thermal expansion coefficient may be inserted in the interior of the cell column, or end and intermediate pieces of similar material may be employed and these may constitute the rectifier terminals. In one construction, as shown in the Figure, the rectifier column c is clamped in a mounting a of steel or iron-nickel alloy between copper plates b insulated by mica . discs e. Intermediate plates of zinc, or metal wedges of high expansion coefficient may be inserted between the rectifier units, or these intermediate parts may be divided and a metal such as bismuth run into the joint. The rectifier units may comprise discs of electron metal (an alloy of aluminium and magnesium), copper sulphide, and nickel.
Patent GB-824600-A (GB)
Title: Insecticidally active acetals containing the methylenedioxybenzene ring system and their production
IPC: C07D317/54
Filed: 1958-02-25
Abstract: The invention comprises acetals of the general formula <FORM:0824600/IV (b)/1> wherein R represents methyl, R1 represents alkyl, phenyl or a saturated aliphatic hydrocarbon radical interrupted by one or more oxygen atoms combined in ether-like fashion, or R and R1 together represent a chain of 3 or 4 CH2 groups which may be substituted by one or more alkyl and/or alkoxy groups. They may be prepared by reacting a -unsaturated cyclic or open-chain ethers with 1 - (a  - hydroxyethyl) - 2 - propyl-4,5-methylenedioxybenzene which may itself be prepared by catalytic hydrogenation of 1-acetyl-2-propyl-4,5-methylenedioxybenzene.  An acidic catalyst is advantageously used.  Temperatures mentioned are in the range about 15-120 DEG  C.  Solvents may be present, e.g. ethers such as diethyl ether, tetrahydrofuran or dioxan or hydrocarbons such as butane, hexane, cyclohexane or benzene and its homologues.  The products are said to be insecticides and insecticide synergists. In examples, acetals are prepared by reacting 1-(a -hydroxyethyl) - 2 - propyl - 4,5 - methylendioxybenzene with: (1) vinyl ethyl diglycol ether in the presence of boron trifluoride etherate in ethereal solution; (2) 2,3-dihydrofuran in the presence of HC1 in ethereal solution; (3) 2,3-dihydropyran in the presence of HC1 in aqueous solution; (4) 2-ethoxy-4-methyl-2,3-dihydropyran in the presence of boron trifluoride in ethereal solution; and (5) 2,3-dihydrofuran in the presence of HCl in tetrahydrofuran solution.  Other unsaturated ethers suitable as starting materials include other 2-alkoxy-2,3-dihydropyrans and -furans, vinyl butyl ether, vinyl ethyl glycol ether, vinyl methyl triglycol ether, vinyl butyl diglycol ether and vinyl phenyl ether.  Other suitable catalysts are inorganic acids such as H2SO4 and AlCl3, ZnCl2 and SbCl3. Specification 632,589 is referred to.ALSO:Compounds stated to be insecticides and to be especially suited as additives to other insecticides especially those of the pyrethrum class have the formula <FORM:0824600/VI/1> wherein R represents methyl, R1 represents alkyl, phenyl or a saturated aliphatic hydrocarbon radical interrupted by one or more oxygen atoms combined in ether-like fashion, or R and R1 together represent a chain of 3 or 4 CH2 groups which may be substituted by one or more alkyl and/or alkoxy groups.  (Preparation in Group IV (b)).
Patent GB-470982-A (GB)
Title: Improvements in and relating to means for landing and launching aircraft
IPC: E01F3/00
Filed: 1936-02-28
Abstract: 470,982. Launching and landing platforms for aircraft. BRIE, R. A. C. Feb. 28, 1936, No. 6026. [Class 4] A launching and landing platform for aircraft, which is intended for use in proximity to a sheet of water, comprises an orientable oblong platform of a width comparable to the span of the aircraft which is so mounted and trainable that an aircraft can be wheeled from the shore onto the platform. In one form, the platform 20 is mounted on a float 23 secured by anchors 24. The platform may be trained by a motor 29 acting through gearing 30, 31. The platform, dependent upon the position of its mooring, may be rotated through 180 or 360‹ and a turntable 25 is provided on the platform. In another form, the platform is mounted on two floats, one being moored and the other being provided with a power unit and screw whereby training of the platform may be effected. In this form the floats and platforms may be turned into alignment for transportation. In a still further form, one end of the platform may be mounted on the shore, the other end being supported on a float ; alternatively, a cantilever platform structure may be mounted on a pier. In order to facilitate use of the platform in tidal water, means may be provided for raising and lowering the platform. One form of such means includes supporting the platform on a hydraulic ram 62 which is guided by rods 65. The platform is mounted on a journal 105 carrying a gear-wheel 99 pivoted to the ram. The platform carries an electric motor 96 driving a gear-wheel 98 which meshes with the wheel 99 for training the platform. A further ram 71 is connected through a universal joint 106 with the outer end of the platform. The rams are actuated by a hand or mechanically driven pump 74 which supplies water to either or both rams. The rams are exhausted by opening a valve 92.
Patent GB-757437-A (GB)
Title: Wall boxes for containing electric switches, or other circuit controlling or connecting means
Inventor: BAIN ROBERT
IPC: H02G3/14
Filed: 1954-03-02
Abstract: 757,437. Junction boxes. ALLDAY & SON (1922), Ltd., H. Feb. 18, 1955 [March 2, 1954], No. 6052/64. Class 38 (1). [Also in Group XXXVII] A wall box for a switch, junction box or the like has a side wall a with a gap a<SP>1</SP> for the insertion of cables, and has a cover-plate b pivotally mounted by an arm b<SP>1</SP> at d which retains the cables in place. The plate b is secured by screws f which have eccentrically mounted heads. The gap a may be formed by breaking away the pre-cut tongues a<SP>2</SP>, these tongues being of differing sizes so that a gap of variable size may be made.
Patent GB-1088022-A (GB)
Title: Nuclear fuel assemblies
Inventor: WEBB JOHN
IPC: G21C3/322
Filed: 1964-02-13
Abstract: 1,088,022. Fuel elements. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. Feb. 2, 1965 [Feb. 13, 1964], No. 6179/64. Heading G6C A spacer grid, for a fuel assembly comprising a plurality of parallel co-extensive fuel rods, comprises a support member which houses at least one array of parallel spacer diaphragms penetrated by the fuel rods and tilted with respect to a wall of the support member. In the embodiment shown in Fig. 1, there are three arrays 2, 3, 4 of parallel tilted diaphragms. Each diaphragm contains three elongate holes 5 for receiving fuel rods. The tilt angle is preferably chosen so that each rod is supported by the aperture through which it passes, and at points above and below this by point contact with the two adjacent diaphragms. A second embodiment has seven diaphragms in each of its three arrays. In an alternative arrangement, a grid of hexagonal form is internally divided into six equilateral triangle arrays, each containing five diaphragms. The diaphragms are intended for use as intermediate spacer grids in fuel assemblies utilizing some other form of end grid, and enclosed in a tubular outer wall; they are of stainless steel, and are arranged in flow direction in the fuel assembly so as to promote helical coolant flow. A grid using a single array of diaphragms can be used, in which case a transverse rather than helical flow is obtained.
Patent GB-934704-A (GB)
Title: Improvements in or relating to the preparation of substituted corticosteroids
IPC: C07J5/00
Filed: 1960-02-22
Abstract: The invention comprises 2b ,4b -dibromo11a ,17a -dihydroxy- 16a -methyl-pregnane-3, 20-dione, 11a ,17a -dihydroxy- 16a -methyl-pregna1,4-diene-3,20-dione and esters thereof, the 11-methane sulphonate and the 11-p-toluene sulphonate of 11a ,17a -dihydroxy-16a -methylpregna-1,4-diene-3,20-dione, and processes for the production of 16a -methyl-17a -hydroxypregna-1,4-9(11)-triene-3,20-dione which include the steps of dibrominating 11a ,17a -dihydroxy-16a -methyl-pregnane-3,20-dione at the 2- and 4-positions to form 2b ,4b -dibromo- 11a ,17a -dihydroxy- 16a -methyl-pregnane-3, 20-dione, followed by double dehydrobromination to form 11a ,17a -dihydroxy16a-methyl-pregna-1,4-diene-3,20-dione and dehydrating this latter compound.  The 11a , 17a -dihydroxy- 16a -methylpregnane- 3,20-dione may be obtained by condensing pregn-16-ene-3,11,20-trione with diazomethane to form a pyrazoline, subjecting this product to thermolysis to obtain 16a -methyl-pregn-16-ene-3,11,20-trione protecting the 3- and 20-ketone groups thereof by forming the corresponding 3,20-diketal, before forming the 16a ,17a -epoxide by treatment with a peracid, reducing this latter compound with an alkali metal in the presence of a lower aliphatic amine to form the 3,20-diketal of 11a ,17a -dihydroxy-16a -methylpregnane-3,20-dione and finally liberating the 3- and 20-ketone groups by acid hydrolysis. Bromination may be effected directly with bromine and dehydration may be effected with thionyl chloride or phosphorus oxychloride preferably on an ester formed with the 11a -hydroxy group, e.g. the 11a -methanesulphonate or 11a -p-toluenesulphonate. An example describes the preparation of 16a -methyl-17a -hydroxy-pregna-1,4,9(11)-triene-3,20-dione. Specifications 934,701 and 934,703 are referred to.
Patent GB-989960-A (GB)
Title: Improvements in or relating to differential gears and locking means therefor
IPC: F16H48/30
Filed: 1962-02-16
Abstract: 989,960. Differential gear. W. E. SALZMANN. Feb. 16, 1962 [Feb. 17, 1961], No. 6195/62. Addition to 936,830. Headings F2C, F2D and F2L. The tractor differential locking arrangement of the parent Specification is modified by operating the carrier ring 2A, 2B for the locking pins 3A, 3B through rings 8, 11 formed with interengaging non-self-locking teeth 9, 10 of the shape shown, the arrangement ensuring automatic disengagement on overload.
Patent GB-1413267-A (GB)
Title: Radiation source measuring apparatus
IPC: G01T7/08
Filed: 1974-02-12
Abstract: 1413267 Reciprocating conveyers BECKMAN INSTRUMENTS Inc 12 Feb 1974 [26 March 1973] 06209/74 Heading B8A [Also in Division G1] Apparatus for measuring the radioactivity of a plurality of samples in sequence comprises a sample chamber 26 within a detector assembly 22-24, sample changer means 12 for incrementally advancing a plurality of sample containers 28 in a sample holder 14, into alignment with a vertical access port 34 communicating with said chamber 26, elevating means comprising a rod 72 which can be raised to engage the underside of a sample container to convey it into the chamber 26, guide means being provided in the constructional arrangement to aid such conveying. The detector comprises a NaI(Tl) crystal 24 within which the chamber 26 is formed, and a photomultiplier. The chamber 26 and the port 24 are lined with a disposable plastics sleeve 120. The guide means includes a funnelshaped opening 36 to the port 34 and the compartment walls 82 of a sample holder 14. The sample changer means 12 is loaded with a large number of holders (only four, 14, 16, 18, 20, shown) which can be sequentially transferred to the incremental advance station by fingers 41, 42 controlled by motor 64 and sequence controller 60. Incremental advance is by the apparatus 50 at the lower part of Fig. 2, comprising a crank arm 94 which through linkage 96 causes movement of projection 90 which is caused to engage and disengage a series of cavities 86 in the base of a holder. When each particular sample holder is in alignment with the part 34, the elevator mechanism shown in Fig. 1 operates. A disc is rotated through a half revolution to cause guide rail 70 to rise vertically, elevating rod 72 and conveying a sample container to the required position. The rod is formed of shielding material, e.g. of tungsten alloy, and the body 20 of lead. A port 38 is also provided for access to chamber 26 from the top. A tube 40 is attached, normally blocked by a lead plug 114 and rod 118. A manually operated sample holder, Figs. 3, 4 (not shown), can be used to insert samples via this tube.
Patent GB-1030905-A (GB)
Title: Improvements relating to manure spreading
IPC: A01C3/06
Filed: 1963-02-15
Abstract: 1,030,905. Manure spreaders. H. KREIENBAUM. Feb. 15, 1963 [Feb. 17, 1962], No. 6272/63. Heading A1D. A manure spreader comprises two spreading rollers 1 arranged with their axes vertical at the rear end of a conveyer, the rollers being formed by discs 4 connected by rods 5, mounted in a frame 6, and driven by bevel gearing 10, 11 from a shaft 12. A chankshaft 15 is mounted inside each roller and carries spikes 17 pivotally mounted by means of bearings 15, the rods 15 passing through slots in the spikes. The top of the crankshaft carries an internally toothed wheel 18 which meshes with the intermediate gear 19 that meshes with a pinion on the roller 1. By this means the crankshaft is rotated in the opposite direction to the roller and the spikes are advanced and withdrawn radially.
Patent GB-535532-A (GB)
Title: Improved method of, and means for, locking screws in position
IPC: F16B39/34
Filed: 1940-04-08
Abstract: 535,532. Locking screws. BRITISH BELTING & ASBESTOS. Ltd.. and HALEY, G. L. April 8, 1940, No. 6303. [Class 89 (i)] Screws, used for fixing material in place that has a lower modulus of elasticity than the screws, are locked in position by drilling the hole for the screw head slightly smaller than the head diameter. The lower edge of the head may be rounded to ensure that the hole is expanded without cutting and the mouth of the hole may be slightly countersunk to facilitate entry. The hole may be of two diameters to provide a sealing for the head as at 10. The holes may taper slightly towards the entrance end. The locking means is especially applicable in the fixing of synthetic resin-bonded fabricfilled or like sheets to metal members.