baber/WOPTO huggingface dataset:
Patent GB-793408-A (GB)
Title: Steroids
IPC: C07J13/00
Filed: 1956-06-26
Abstract: The invention comprises 6-halohydrocortisones having the general formula <FORM:0793408/IV (b)/1> wherein X is a fluorine, chlorine or bromine atom and R is hydrogen or the acyl radical of a hydrocarbon carboxylic acid containing from one to twelve carbon atoms inclusive, and a process for the production thereof which comprises oxidatively hydroxylating a compound of the formula <FORM:0793408/IV (b)/2> with osmium tetroxide and an oxygen donating oxidizing agent. Said 6-halo-11b -hydroxy-21-acyloxy-4,17(20)-pregnadien-3-one is prepared by epoxidizing a compound of the formula <FORM:0793408/IV (b)/3> wherein R is b -hydroxy or keto, R1 and R11 are hydrogen or lower alkyl and n is one or two, with an epoxidizing agent to form the corresponding 5 : 6-oxide, reacting the latter with a hydrogen halide (HX) in which X is fluoride, chloride or bromide, to open the oxide and produce a compound having the formula <FORM:0793408/IV (b)/4> reducing the latter with a carboxyl reducing agent in an organic reaction medium to produce the corresponding 3-ketalized 5,11b ,21-trihydroxy - 6 - halo - 17(20) - pregnen - 3 - one, deketalizing the latter by hydrolysis, esterifying the resulting 5,11b ,21 - trihydroxy - 6 - halo - 17(20)-pregnen-3-one to produce the 21-ester thereof by reaction with an acid anhydride or halide of a hydrocarbon carboxylic acid containing from one to twelve carbon atoms, inclusive, and dehydrating the latter with a dehydrating agent to produce a compound of the formula <FORM:0793408/IV (b)/5> Epoxidation may be effected with peracetic or perbenzoic acids. The reduction step may be effected with lithium aluminium hydride in an organic solvent, e.g. ether, dioxane, tetrahydrofuran or benzene. Dehydration of the 5-OH group may be effected with hydrogen chloride and Girards Reagent T.  The dehydration and esterification reactions may be carried out in either order.  The oxidative hydroxylation may be effected with osmium tetroxide and hydrogen peroxide, peracids, alkyl peroxides or amine oxide peroxides.  Examples describe the preparation of 6 - fluoro - 11b ,17a ,21 - trihydroxy - 4 - pregnene - 3,20 - dione, 6 - fluoro - 11b ,17a  - dihydroxy - 21 - acetoxy - 4 - pregnene-3,20-dione and the corresponding 6-chloro-compound. Other 21-esters mentioned are obtained from the following acids: formic, propionic, butyric, isobutyric, valeric, isovaleric, trimethylacetic, 2 - methylbutyric, 3 - ethylbutyric, hexanoic, diethylacetic, triethylacetic, heptanoic, octanoic, a -ethylisovaleric, a cyclic acid, e.g. cyclopentylformic, cyclohexyl acetic, an aryl or alkaryl acid, e.g. benzoic, ethylbenzoic, or an aralkyl acid, e.g. triphenylacetic acid. Specification 749,201 is referred to.
Patent GB-837327-A (GB)
Title: New dyestuff of the perylene tetracarboxylic acid series
IPC: C09B5/62
Filed: 1957-06-24
Abstract: The invention comprises a red dye of the formula <FORM:0837327/IV(c)/1> and a process for making it by condensing perylene - 3 : 4 : 9 : 10 - tetracarboxylic acid or its anhydride with 1-amino-3-methylbenzene.  The dye colours plastics, such as polyvinyl chloride containing a plasticizer, or polyethylene, or printing inks and lacquers.  In examples the reactants are heated in the presence of concentrated hydrochloric acid and in solution in (1) excess 1-amino-3-methylbenzene and (2) quinoline.
Patent GB-1247229-A (GB)
Title: Improvements in or relating to data recording apparatus
Inventor: WHITEHEAD CECIL THOMAS
IPC: G11B15/20
Filed: 1969-04-18
Abstract: 1,247,229. Data stores. INTERNATIONAL COMPUTERS Ltd. 5 May, 1970 [18 April, 1969], No. 19808/69. Heading G4C. A dynamic data recording apparatus such as a magnetic or punched tape device has two recording heads 4 and 7, one of which is selectively connected via switch 3 to the data input 1 and the other is connected to a store 13 which is also connected via a second contact of switch 3 to the data input. The arrangement is such that the data input is connected to the store 13 for subsequent recording while the tape is changed, the distance between the heads 4 and 7 being such that the stored data and the input data may be simultaneously recorded without overlap after completion of the exchange. The Specification states that the store 13 may be a counter, shift register or a magnetic core store and has a capacity equal to the maximum amount of input data which occurs during the period required to change the tape. Timing signals are provided on line 14, for clocking the store 13. The tape may be advanced continuously or incrementally via line 10 on receipt of each input data bit. The switch 3 may be actuated automatically when the tape is full.
Patent GB-994352-A (GB)
Title: Improvements in or relating to zirconium alloys
Inventor: CHILD HENRY CAVE
IPC: C22C16/00
Filed: 1960-06-07
Abstract: An alloy contains one or more of the following .Cu.0.5 -5.0 .Mo.1.0 -5.0% .Fe.0.5 -1.75% .Ni.0.75-5.0% .Ba.0.5 -5.0% the balance being Zr and impurities.  Alloys according to Specification 829,668 (i.e. containing 0.5-1.5% Cu, 0.25-1.5% Cr or Mo, the balance Zr) are excluded.
Patent GB-587018-A (GB)
Title: Improvement in collapsible tubes
IPC: B65D35/06
Filed: 1944-10-16
Abstract: 587,018. Collapsable tubes. BOGOSLOWSKY, B. Oct. 16, 1944, No. 19959. [Class 66] [Also in Groups V and XXII] Collapsable tubes of cellulosic, resinous, or rubber-base film-material, paper, or metal foil &c. are made by inserting two mandrels 2, 3, on a spindle 4 into a long, wound, or pre-formed cylindrical blank, and rotating the two ends relatively, so that a central part is twisted as illustrated to form the necks and shoulders ; two tubes being thus formed on severing with a knife 11. The necks are then shortened, thickened and screw-threaded in a mould which may be heated and which also compresses the folds of the shoulder.
Patent GB-407733-A (GB)
Title: Apparatus for use in permanent hair waving
IPC: A45D2/24
Filed: 1933-04-18
Abstract: 407,733. Hair-waving appliances. McCONKIE, W. R., 24, Montgomery Street, and CADDIES, R. F., Chesterfield, both in Irvine, Ayrshire. April 18, 1933, No. 20177/32. [Class 131.] A mandrel for treating a wound tress of hair with gas or vapour comprises an inner perforated tube 1 and an outer perforated casing 2 rotatable relatively thereto to tighten the winding, the tube and casing being secured relatively to one another by a clutch comprising teeth 10, 12 formed respectively on a sleeve 9 secured to the tube 1 and on an enlargement on the casing 2, the teeth being held in engagement by a spring 13 bearing on the casing 2. The tube and casing may be made of stainless steel, aluminium or other alloy, synthetic resin, cellulose derivatives, vulcanized rubber or ebonite. In use, the gas or vapour, e.g. steam and/or air, oxygen, ozone, carbon dioxide, ammoniated steam, oil vapour or the vapour of a suitable chemical, may be supplied to the open end 3 of the tube 1 and pass outwards through the wound tress. The mandrel, with the tress wound thereon, may be inserted in an outer container, the gas or vapour being either supplied to the tube 1 and passing out through an outlet on the container, or being supplied to the container and passing out through the tube 1.
Patent GB-418033-A (GB)
Title: Improvements in or relating to wireless receiving apparatus
IPC: H03D1/16
Filed: 1933-07-17
Abstract: 418,033. Valve circuits for wireless reception. FULLER, L. G., Dunromyn, Bartons Hill, East Minster, Isle of Sheppey, Kent. July 17, 1933, No. 20177. [Class 40 (v).] A thermionic rectifier V has an output load impedance consisting of a thermionic valve VI, direct connections extending between the cathodes of each valve to an electrode of the other, and the two valves having unequal characteristics. A high frequency input circuit LC, Fig. 1, is connected across a diode V1 through a condenser C1, the cathode of valve V1 being connected to the grid of valve V whose cathode is connected to the anode of valve V1. When no signals are being received, the grid bias of valve V adjusts itself so that the grid current is equal to the space current through the diode V1, the grid acting as an anode. The characteristics of the two valves are made unequal by adjusting the temperature of the filament of valve V1 and this is stated to produce detection of a high frequency input. In a modification, the cathode of valve V, Fig. 2, is connected to the grid of valve V1 over the circuit L C, the condenser C1 of Fig. 1 being omitted. The valve V1 may be a diode or a screen grid valve, and both valves may be contained in a single envelope, Fig. 3 not shown.
Patent GB-135954-A (GB)
Title: A Laundry Clothes Press and Rinser.
Inventor: TAYLOR ARTHUR HORATIO
IPC: D06F39/00
Filed: 1918-12-06
Abstract: 135,954. Taylor, A. H. Dec. 6, 1918. Washing-machines with squeezing - apparatus; wringers.-A washer and presser for laundry purposes comprises a receptacle A with perforated false bottom B and a presser-plate 0 actuated by a screw H engaged by a handled nut I working in a collar on the lid F. The under surface of the plate 0 is formed with projections M, and its upper surface with a bearing R engaging a ball J on the screw. Vertical ribs inside the receptacle engage with recesses in the plate O to act as guides.
Patent GB-763389-A (GB)
Title: An improved hydraulic extrusion press
IPC: B21C23/21
Filed: 1954-07-13
Abstract: 763,389. Extruding. SCHLOEMANN AKT.-GES. July 13, 1954 [Aug. 7, 1953], No. 20427/54. Class 83 (4). An hydraulic extrusion press has a billet receiver 3 movable towards and away from the extrusion die 27 by hydraulic rams 6b, 6 respectively, the pressure liquid supply circuit to the rams 6 including a stop valve, such as a non-return valve RV which, when the receiver has been raised from the die, causes liquid to be trapped in the ram cylinders 7, thus providing an abutment for the receiver whereby a billet which has become jammed therein may be ejected by the extrusion ram 2. The rams 6, 6b have intermediate crossheads 5b connected by rods 5a, main cross-head 5 and rods 4 to the receiver 3. The receiver is lowered on to the die by the rams 6b whose cylinders 8 are supplied with water under pressure from an hydraulic accumulator through an inlet 9, inlet valve E1 and pipes 20, 20b, 20c. Valve E1 is controlled by a cam 16 on a shaft 12 rotatable by a handle 12a which simultaneously opens an exhaust valve A2 whereby water will be exhausted from the cylinders 7 through pipes 24a, 24b, distributer 24, pipe 23 and outlet pipe 21. For raising the receiver the handle is rotated to position 12c whereby valves E2, Al are opened and valves E1, A2 are closed. Pressure water thus passes into the cylinder 7 and is exhausted from the cylinders 8. To hold the receiver in its raised position, the handle is moved into position 12b whereby all the valves are closed. A safety valve 11 biased by a spring 26 is provided for the ram cylinders 7. The non-return valve RV may alternatively be located between the inlet pipe 9 and inlet valve E2.
Patent GB-959441-A (GB)
Title: Measuring apparatus
Inventor: TROTIN CHARLES
IPC: G01N11/14
Filed: 1960-06-10
Abstract: 959,441. Viscosimeters; dynamometers. SOC. FRANCAISE DES REGULATEURS UNIVERSELS ARCA. June 10, 1960, No. 20475/60. Headings G1S and G1W. [Also in Division D2]. Apparatus for measuring torque comprises a vane 14 and nozzle 9 carried respectively by shafts 16, 17 and a pipe 10 supplying air under pressure to the nozzle 9 whereby, when one shaft is rotated, the other is driven against the torque to be measured by a jet issuing from the nozzle 9 and impinging perpendicularly on the vane 14 so that with a constant speed of rotation, the pressure read on gauge 11 is a measure of the torque. Fig. 4 shows the_apparatus in use for measuring the viscosity of a liquid passing through a closed chamber 36 in the direction of the arrows. A hollow shaft 24 through which air is passed from a source 32 is rotated at constant speed by a motor 29. A second hollow shaft 21 supported on an extension of the shaft 24 carries a sphere 18 immersed in the liquid being tested. A nozzle 26 formed on the end of the shaft 24 as in Fig. 3 blows a stream of air on to the vane 23 carried by the shaft 21. The pressure set up behind the nozzle 26 is read on a gauge 34 and varies in accordance with the viscosity of the test liquid. Air from the nozzle is returned to the atmosphere by a conduit 40. In the embodiment of Fig 2 (not shown), the sphere 18 is immersed in a liquid contained in an open tank. The pressure set up may be used to keep viscosity constant by using the pressure to control temperature or to control the introduction of a secondary liquid e.g. in producing an oil of given viscosity or in adjusting the consistency of paper pulp by the addition of water.
Patent GB-267399-A (GB)
Title: An improved manufacture of flooring, wainscoting and analogous articles, and apparatus therefor
IPC: B29C37/00
Filed: 1926-08-19
Abstract: 267,399. Losey, J. B., and Stone, W. R. Aug. 19, 1926. Moulding indiarubber; moulds.-Rubber composition flooring, wainscoting, and analagous articles are formed in tongued-and-grooved compound slabs having an upper layer of separate plates of hard rubber composition of varying colours and shapes, and a lower layer comprising a composition sheet of softer rubber, into the body of which a metallic reinforcement is forced during the operation of assembling the layers by vulcanizing under pressure. The hard composition plates are laid in spaces between ribs 11, Fig. 8, on the bottom of the mould to fill the space between detachable side and end walls 3, 3' which are shaped to form the tongues and grooves in the completed slab. The rubber sheet is laid over the plates and the wire fabric forming the metallic reinforcement is laid on the top of the sheet. The upper mould member is placed in position, being guided into exact register by positioning lugs at each corner, and the mould is then placed between the steam or otherwise heated pressing members of a hydraulic press. Excess material flows into the channels in the members 3, 3<1> and escapes at the ends of the mould. The wire reinforcement may be omitted in some cases.
Patent GB-1010667-A (GB)
Title: Improvements relating to electrical proportional control systems
IPC: G05D23/24
Filed: 1962-05-28
Abstract: 1, 010, 667. Automatic temperature systems. GARRETT CORPORATION. May 28, 1962 [May 29, 1961], No. 20484/62. Heading G3R. In an automatic control system, the power input is decreased on each side of a given value of the quantity to be controlled. A heating system for a windscreen 23 has the temperature sensed by a temperature dependent resistor 16 forming part of a D.C. bridge 38-40 feeding windings 43, 44 on a push pull magnetic amplifier 17 having opposing bias windings 45, 46 unilateral feedback windings 49, 50 and output windings 53-56 which give an output of differing polarity each side of the given temperature, thus energizing one of desaturating control windings 73, 76 of another amplifier 22 having an opposing bias winding 81 and output windings 98, 99 fed from a square wave supply formed by reverse series connected diodes 107, 111, switching thyristors or thyratrons 100,101 controlling the heating current. An opposing delay winding 83 fed from a network 84-88 having a time constant of 30 sees limits the rate of rise or fall of the heating power. To allow for the reducing resistance of the screen with age a power limiting winding 97 is supplied with a voltage derived from a potentiometer 89, 90 added to a current transformer 91-93 output through a rectifier 95 and zener diodes 96 which normally maintain the winding 97 de-energized. Radio raise filters comprising capacity input inductance capacity networks may be provided. A switch 42 gives an alternative temperature setting. In an alternative arrangement, the winding 81 is controlled by a transistor (Fig. 4 not shown). In one mode of operation the power input-temperature ratio is constant below the given temperature. Specification 1,010,668 is referred to.
Patent GB-248256-A (GB)
Title: Improvements in or relating to free wheel and change speed mechanism for cycles, motor cycles or other vehicles
IPC: B62M9/08
Filed: 1925-08-15
Abstract: 248,256. Couzon, A., and Couzon, M. Aug. 15, 1925. Variable-speed ratchet gearing.-In a cycle variable-speed and free-wheel gear made of small dimensions so that it may readily replace the usual free-wheel on the hub of the wheel, an outer member with an internal circular ratchet and an inner member with an external ratchet rotate together to give a direct drive or are connected to give one indirect speed through a ratchet member rotatable on a swinging ring mounting. Figs. 1 and 5 show corresponding side and sectional views and Fig. 3 shows an enlarged part sectional view. The chain 5 drives the outer member 1 which is mounted by ball bearings 12, 13 on side plates 10, 11 which in turn are carried by ball bearings 14, 15 on the hub inner member 2 screwed on to the hub 36 of the road wheel. The interior of the outer member 1 and the exterior of the inner member 2 are formed with circular ratchets 6, 7 respectively. The two side plates 10, 11 are connected by bolts 16. Two intermediate circular ratchets 8, 9 are mounted by a ball race on a ring 17 which is pivoted at 20 in the side plates and is adjustable between a concentric position giving a direct drive and an eccentric position shown in Fig. 5, giving a higher speed ratio. For the direct drive, the outer ratchet 6 engages a pawl 24 pivoted to the side plates 10, 11 which drive the inner ring 7 through a pawl 23 also pivoted to the side plates. For the indirect drive the ratchet 6 engages the intermediate ratchet 8 at the point P. The two ratchets 8, 9 are thus rotated on the ring 17 and the ratchet 9 engages the central ratchet 7 at the point Pa. The s'winging ring 17 is provided, at a point diametrically opposite to the pivot 20, with a finger 22 which projects through a slot 21 in the side plate 11. The ring is thus free to swing about its pivot 20 and is retained in either its eccentric or its concentric position by engagement of the V-shaped nose of the spring pressed lever 31 with either inclined face of the finger 22. Gear changes are effected by the pivoted operating lever 43, 46 having a projection 47 which may be moved into or out of the path of the finger 22. In the position shown in full line in Fig. 1, the projection 47 is clear and the ring 17 turns with the other parts during the direct drive. When the projection 47 is moved into the path of the finger 22, the ring 17 is held against rotation and is swung eccentrically about its pivot 20 giving the indirect drive. During freewheeling the lever 31 and finger 22 cooperate to move the pawl 24 out of engagement with the ratchet 6, the ring 17 being formed with a hook 28 which engages an extension of the pawl. A modification is shown in which the chain wheel drives the inner member giving a direct high gear ratio and an indirect reduced ratio.
Patent GB-170554-A (GB)
Title: Improvements in or relating to adjustable clamps for slide rails in mines
IPC: E01B23/04
Filed: 1921-08-02
Abstract: 170,554. Heumann, H. F. Oct. 19, 1920, [Convention date]. Portable railways; tiebars.-Extension rails 2 are secured to the main rails 1 by clamps 4 having a claw-shaped head 5 and a threaded stem 6 provided with a nut 12 which engages a sleeve 7. The sleeves are formed with a lip 9 extending over the outer flanges of the main rails. Each clamp has a hole to receive the bent end 14 of a tie-bar 15, which is retained in place by being supported on the ground, &c.
Patent GB-646978-A (GB)
Title: Apparatus for bending work pieces
IPC: B21D11/07
Filed: 1948-08-04
Abstract: 646,978. Angular bending. ARMCO INTERNATIONAL CORPORATION. Aug. 4, 1948, No. 20625. Addition to 640,757. [Class 83 (iv)] The bending-apparatus of the parent Specification is provided with means for locating and supporting the formed portion of the workpiece while the unformed portion is being bent. The frame of the machine carries an arm 3 in which is mounted a vertical shaft 40 in alignment with the shaft 25 of the bending head. Slidably resting on the table 4 are two worksupporting members or sweeps, each comprising side members 50, 51 and a brace member 58 which is connected by a ball-and-socket joint 46 to a rigid arm structure 43 pivotally secured to a bracket 41 on the shaft 40. At its inner end, each sweep has a tubular member 57 receiving a rod 55 secured to an axial extension of one of the bending rollers 27. By means of laterally extending arms 52 and 53 each sweep carries an additional supporting member 54, a spring arm 59 on one of them serving to bridge the gap between the members 54 of the two sweeps. As the bending head oscillates, it drives the shaft 40 through a lug 72 adapted to engage one of two ears 75, secured to a disc 73 at the lower end of the shaft. When the bending head is in the neutral or work-feeding position, one of the sweeps will be in alignment with the line of feed and will receive the work, feeding being stopped when the end of the stock to be bent, or a bend of an already partially bent member, engages a switch within the sweep. The bending head then rotates to form a reverse bend and the sweep moves round with the work, thereby preventing whip. The other sweep is meanwhile moved into the line of feed and receives the work for the next bend in the other direction, the return movement of the bending head to neutral position being substantially idle as regards moving the sweeps. The shaft 40 carries a cross arm 80 which co-operates with a yielding stop device to position the sweeps accurately after a rotary movement. Opposite ends of the arm 80 carry a depending and an upstanding lug 85, 86 adapted to engage one of two spaced arms 90, 91, pivoted at 92 to the machine frame, held against movement in one direction by a fixed stop 100 and in the other direction by a spring 94 which thus serves to bring the sweeps to rest. The ends of the arm are shaped to co-operate with a spring-pressed roller 101 which cushions the slight rebound movement of the sweeps under the action of the spring 94. The upper end of the shaft may also be fitted with a brake device.
Patent GB-358129-A (GB)
Title: A method of and means for improving the quality of textiles
IPC: D06C15/00
Filed: 1930-07-08
Abstract: 358,129. Finshing fabrics. SCHREY, W., 9A, Burgstõdterstrasse, Borna, Chemnitz, Germany..July 8, 1930, No. 20639. Convention date, April 3. [Class 42 (i).] Calendering.-All the calendering rollers A .. J are covered with cotton, jute, paper, &c. The fabric passes from the roll U between the roller A and a sheet of argentan &c. O heated by a gas device &c. Y and thence between each pair of rollers A .. J to the take-up roll X. The sheet O can be pressed towards the roller A by steel bands and a shaft P. The rollers B .. J are heated by contact with hot metal rollers S carried on supports T which are drawn together by springs I and pressed apart by eccentrics R which are connected by rods 2 to the topmost roller bearing 3 when the pressure is relieved by the cylinder L and the rollers A .. J separated by the piston M.
Patent GB-403044-A (GB)
Title: Improvements in or relating to sheet-metal strips for the forme cylinders or printing cylinders of rotary printing or duplicating machines
IPC: B41L47/02
Filed: 1933-07-21
Abstract: 403,044. Eyelets. ADREMA MASCHINENBAUGES., 62, Alt Moabit, Berlin. July 21, 1933, No. 20650. Convention date, July 23, 1932. [Class 43.] In printing-plates which are attached to the forme cylinders of rotary duplicators by means of holes engaging pins on the cylinders, each hole is stiffened by pressing out an annular bead l round the hole, and inserting a stiffening-ring m between the bead and an eyelet h punched out of the plate.