baber/WOPTO huggingface dataset:
Patent GB-932857-A (GB)
Title: Steroid compounds and compositions thereof
IPC: C07J75/00
Filed: 1961-04-10
Abstract: The invention comprises compounds having the formulae: <FORM:0932857/IV(a)/1> and <FORM:0932857/IV(a)/2> and the corresponding D 1,4, D 1,4,6 and D 4,6 compounds, wherein X is hydrogen, hydroxyl or an acylated hydroxyl, the acyl group being derived from monocarboxylic acids containing 1-10 carbon atoms and R2 and R3 are the same or different and represent hydrogen, or alkyl groups containing 1-4 carbon atoms or together with a nitrogen atom form a heterocyclic ring; and pharmaceutically acceptable acid addition salts and quaternary alkyl ammonium derivatives thereof, and therapeutic compositions thereof.  The D 1,4- and D 1,4,6-compounds in which R2 and R3 are both alkyl groups or form a heterocyclic ring are obtained by reacting the corresponding progesterone derivative with an amine addition salt and formaldehyde.  For D 4- and D 4,6-, and also D 1,4- and D 1,4,6-compounds in which R2 and R3 are hydrogens, the 3-hydroxy compound is reacted with an amine salt and formaldehyde to form a 3-hydroxy-21-dimethylamino-methyl compound, a molecule of dimethylamine is eliminated by forming a quaternary ammonium compound which is treated with water or aqueous alkali to form a 21-methylene compound, the 3-hydroxy group is oxidised to 3-keto and the resulting compound is treated with ammonia or free amine to form the desired 3-keto-D 4-21-substituted compound.  For the preparation of 6-bromo or chloro or 6-methyl compounds pregnenolone or 17-hydroxypregnenolone is treated with a peracid to form a 5a ,6a -epoxide, the epoxide ring is opened with CH3MgBr, HCI, or HBr to form 5a -hydroxy-6b -methyl, 5a -hydroxy-6b -chloro and 5a -hydroxy-6b -bromo steroids, which are converted to 21-methylene compounds as above, oxidised with chromic acid and dehydrated to form 3-keto-D 4-21-methylene compounds and reacted with ammonia or an amine to obtain the desired 3-keto-D 4,6-substituted 21-amino compounds.  For the preparation of 6-fluoro compounds, pregnenolone or 17-hydroxypregnenolone is reacted with N-bromoacetamide and anhydrous HF to obtain a 5a -bromo-6b -fluoro compound, this compound is converted to a 21-methylene compound as above, the 3-hydroxy group is oxidised to 3-keto, the bromine atom removed with alkaline agent and the resulting 3-keto-D 4-6b -fluoro-21-methy-lene compound is reacted with an amine to produce a 21-amino compound.  Double bonds may be introduced in the intermediate 21-methylene compounds in 1,2-position with selenium dioxide or in 6,7-position with chloranil. The therapeutic compositions, having progestational activity, comprise the active compounds of a pharmaceutical carrier. Specifications 897,839 and 924,981 are referred to.
Patent GB-605564-A (GB)
Title: Improvements in binocular observation instruments
IPC: G02B7/12
Filed: 1945-05-22
Abstract: 605,564. Binocular devices. BARR & STROUD, Ltd., and FRENCH, SIR J. W. May 22, 1945, No. 12810. [Class 97 (i)] An observation instrument comprises binocular eye - pieces, one of which is fixed, while the other is a cranked eye - piece, which may be rotated to provide an interocular adjustment, optical means being provided to bring the objective fields into the required observational positions in relation to the eye-pieces. As shown in Fig. 4, the field lens 15 and eye lens 13 of the fixed eye-piece are coaxial, while the corresponding lenses 16, 14 of the other eyepiece are separated by a step prism 19 so that this eye-piece may be rotated about the axis of the lens 16. Below the field lens 16 is placed a block 30 of such length and refractive index as to move the field 28, of the two fields 17, 28 formed by one, or two separate, objectives, to the position 18 for observation through the cranked eye-piece. In another form, a prism is used to divide the light beam from a single objective so that light is directed into the two eye-pieces, the objective fields being formed at the same level and adjacent each field lens; in this case, a transparent block is positioned below the field lens in the fixed eye-piece and the step prism 19 is positioned below the field lens in the cranked eye-piece.
Patent GB-916597-A (GB)
Title: Process of recovering and purifying benzene
IPC: C10G47/12
Filed: 1959-04-15
Abstract: Benzene is purified and recovered from an impure stock by subjecting to catalytic cracking in the presence of hydrogen and a catalyst containing 10-15% chromium oxide supported on high purity, low sodium content, gamma alumina at above 1150 DEG F. and separating benzene from the gas formed.  Sulphur compounds are destroyed, paraffinic impurities cracked to gas and homologues of benzene are dealkylated. Suitable stocks are coal tar light oil and petroleum catalytic reformates boiling above the gasoline range, e.g. 300-400 DEG F. Suitable conditions are a space velocity of 1-5 wt./wt./hr., preferably to give a residence time of about 12 seconds, a pressure of 100-1,000 p.s.i.g. and a hydrogen to hydrocarbon molar ratio of 1-10:1.
Patent GB-1064451-A (GB)
Title: An improved assembly of concrete blocks
IPC: E04B2/02
Filed: 1964-03-26
Abstract: 1,064,451. Building blocks. SKOVDE GASBETONG A. B. March 26, 1964 [April 4, 1963], No. 12825/64. Heading E1B. Superimposed concrete wall blocks are interconnected without the use of mortar by dowel elements 19 which are force-fitted in opposed tapered recesses in the blocks. As shown the recesses are hemispherical and the elements 19 are balls or burnt clay or plastics. In a modification the recesses are conical and each dowel element is formed as a pair of oppositely-tapering cones or frusto-cones.
Patent GB-649352-A (GB)
Title: Improvements in or relating to a method of and apparatus for sampling particulate clouds
Inventor: SAWYER KENNETH FREDERICK
IPC: G01N15/04
Filed: 1948-05-11
Abstract: 649,352. Centrifugal separators. MINISTER OF SUPPLY. May 11, 1948, No. 12916. [Class 23] The particles from a particulate cloud or dispersion such as particleladen air are separated by causing the cloud or dispersion to follow a path in a centrifuge the chamber of which has circular symmetry about the axis of rotation, the distance of the said path from the axis of rotation increasing in the direction of movement of the particles so that they are subjected to an increasing centrifugal force under the action of which they pass through a layer of clean air moving along a similar path, and on to a collecting surface or through an opening for removal so that the particles are deposited or removed at distances along the path which differ in accordance with the sizes of the particles or their settling velocities. As shown, the centrifuge comprises a rotatable inner conical member 1 a rotatable outer conical shell 2, a tube 3 for delivering a particulate cloud to the top of the member 1. and a passage between the tube 3 and the neck 5 of the cone 2 for the passage of a current of clean air into the space between cones 1 and 2. The conical shell 2 has at least one slit 8 in it which is covered by or receives a plate or strip 10<SP>1</SP> removable with the deposit on it for examination. Alternatively the shell 2 may have a removable liner on which the particles are deposited, in which case the shell or the shell and its liner may be made separable into two or more sections corresponding to respective size ranges of particles. The shell 2 may further have at least one hole in it through which particles of one size or size range can pass and thus be removed. The clean air is caused to pass down between the conical members 1 and 2 by the difference in the centrifugal forces at the top and bottom of the apparatus and circulates in a closed circuit through radial holes 13, hollow shaft 14, 19, changeable jets 20 and into outer cover 21. The size of jets 20 determines the rate of flow of the clean air through the centrifuge. This clean air circuit communicates with the atmosphere by a nipple in the top 21<SP>1</SP> of the outer cover 21 so that the outward flow of air through it automatically causes the drawing of the particulate cloud into the apparatus and the size of the nipple determines the rate at which the cloud is drawn into the apparatus. The air is drawn through the apparatus shown by selfpumping, but with slight modification of the apparatus the air may be drawn through by externally applied suction.
Patent GB-571348-A (GB)
Title: Flexible pocket receptacles
IPC: A45C11/32
Filed: 1943-08-10
Abstract: 571,348. Pocket cases. BUXTON, INC. Aug. 10, 1943, No. 12918. Convention date, Aug. 3, 1942. [Class 18] A flexible pocket receptacle, e.g. for ignition keys and automobile licence, registration papers, &c. comprises a rectangular back panel, flaps 16, 21 hinged to the top and bottom edges secured in overlapping relation by a releasable fastening, side flaps 12, 13 also secured by a fastening, one or both of the fastenings being off-centre, rigid key-retaining means 19 secured to the top flap and means for receiving licence and registration papers on the bottom flap foldable between the flap and the back. The connection of the bottom flap to the base may be less flexible than that of the top flap. The carrying means carried on flap 21 may consist of a transparent panel on the inner face of the flap and co-extensive with it, and two further compartments, which may be transparent, hinged to the lateral edges. Specification 398,424 is referred to.
Patent GB-130778-A (GB)
Title: A Device for use in Teaching, or Learning, Languages and for analogous purposes.
Inventor: DAVIES WILLIAM SAMUEL
IPC: G09B19/08
Filed: 1918-08-09
Abstract: 130,778. Davies, W. S. Aug. 9, 1918. Word-building and like cards.-Passages for translation, descriptions, representations, or the like are presented in sections running in sequence alternately on two relatively movable members, such as cards, one of which is slotted to display or cover up the matter on the other, and so present the whole of the matter or only certain parts of it. For example, the main clauses of a Latin passage are presented on a slotted member, as shown, and the subordinate clauses on the other member.
Patent GB-558280-A (GB)
Title: Mechanisms for operating electric switches
IPC: H01H35/24
Filed: 1942-09-15
Abstract: 558,280. Actuating switches. BLISS CO., E. W. Sept. 15, 1942, No. 13002. Convention date, Dec. 26, 1941. [Class 38 (v)] Hydraulic actuation of a short-travel switch is effected through the medium of a flat flexible oil resistant diaghragm &c. 12 held by a cap 21 to a casing 18 around its marginal edges in such a way that its area, not so held, is in contact with a motion transmitting means shown as a plunger 13. A pivoted lever 14 pressed by a spring 17, has an extension S moving between a stop bar 37 and a wall 35 to operate the member 16 of the switch. As shown, the spring has two adjustments, one a screw 40 on the lever 14 and the other a housing 44 screwed into the casing, with locking means. In a modification, one adjustment only, the screw 40, is used, but the switch 15 is capable of adjustment on a swinging base plate.
Patent GB-135778-A (GB)
Title: Improvements in Rotary Internal Combustion Engines.
Inventor: ROBERTSON DAVID HERCULES
IPC: F02B53/00
Filed: 1919-05-23
Abstract: 135,778. Robertson, D. H., and Gregson, W. May 23, 1919. No Patent granted (Sealing fee not paid). Fixed - abutment type; movable - abutment type; packing drums; working-fluid supply.-In rotary internal-combustion engines in which an induction and compression rotor is keyed on the same shaft with a power rotor, the compression rotor c is eccentrically mounted in a chamber c, and the power rotor is concentrically mounted in a chamber d. The compressor comprises a rotor e with blades f, g held in contact with the walls of the chamber by a spring i. The charge is induced at the inlet o and compressed through the outlet p into a valve q, Fig. 5, by which the supply to the ignition chamber s, Fig. 2, is regulated. The plug r of the valve is held into a conical seating by a spring and is rotated by a spindle t', so that ports r' admit the fluid to the ignition chamber s. The power rotor comprises pistons k recessed at l, m and held in contact with the casing by springs n. The abutment comprises a flap valve B pivoted at B<1>, the free end bearing on the rotor. Exhaust takes place at C, D.
Patent GB-1505065-A (GB)
Title: Methods and apparatus for electrically machining a workpiece
IPC: B23H9/14
Filed: 1974-03-23
Abstract: 1505065 Electro-erosion ROLLS-ROYCE Ltd 14 March 1975 [23 March 1974] 13029/74 Heading B3V [Also in Division C7] A conically shaped passage is formed in a workpiece 44 by a combined electrochemical and electrical discharge machining method by flowing a weak electrolyte along the exterior surface of an elongate consumable electrode 43 supported in a guide 76, periodically advancing the electrode 43 through the guide 76 to successive positions substantially in contact with the workpiece 44 to cause the workpiece 44 to be spark eroded by electrical discharge of a capacitor 51 connected in parallel with the machining gap between the electrode 43 and workpiece 44, and electrochemically machining the workpiece 44 during recharging of the capacitor 51 whilst the electrode 43 is being advanced towards the workpiece 44. In operation, the electrode 43 is advanced by a stepping motor 46 towards the workpiece 44 through a guide tube 76 surrounded by a collar 68 to which electrolyte is supplied whereby the electrolyte flows down the electrode 43. During the advance of the electrode 43, which may be vibrated, the workpiece 44 is electrochemically machined using a D.C. current supplied via a resistor 52 until the electrode 43 is about to touch the workpiece 44 whereupon a capacitor 51 discharges to machine the workpiece 44 by spark erosion. Upon detection of the discharge of the capacitor 51, the electrode 43 is withdrawn by the motor 46 and then advanced again towards the workpiece 44 whereupon the cycle is repeated. The breakthrough of the electrode 43 through the workpiece 44 is detected by monitoring the peak potential between the electrode 43 and workpiece 44 or the frequency of spark discharges whereupon the speed of the motor 46 is slowed and the machining operation terminated after a predetermined time. A plurality of passages can be machined simultaneously. The shape of the passage produced can be varied by adjusting the proportion of electrical discharge to electrochemical machining by changing the size of the resistor 52. A succession of passages may be produced by automatically controlling the apparatus (Fig. 9, not shown). The electrolyte used comprises tap water, sodium sulphate in deionized water or potassium chloride and sodium acetate in deionized water.
Patent GB-107308-A (GB)
Title: Improvements in or relating to the Heating of Vertical Retorts.
Inventor: STRASSMANN PAUL GERHARD
IPC: C10B3/00
Filed: 1916-09-15
Abstract: 107,308. Strassmann, P. G. Sept. 15, 1916 Retort furnaces.- Vertical retorts for producing gas and coke are heated from the middle downwards for a short distance over their narrow sides, the heating gases then passing upwards over the broad sides and continuing to the top of the retort over both the broad and the narrow sides. In the construction shown, gaseous, fuel is supplied to the passages 1 and air, previously heated, to the passages 4, both uniting in the passages 2. The flame and hot gases proceed downwardly through the flues 3, and then upwardly through flues at the broad sides of the retort leading to baffled flues 9 around the upper part of the retort. They then pass downwards through flues near the outer broad walls of the setting to the outlet. The air is heated in flues contiguous to the flues 9 and the downcast exhaust flues, passing upwards and then downwards through the upper part of the setting. The lower part of the retort is cooled by air or water circulating through passages 16.
Patent GB-404191-A (GB)
Title: Improvements relating to the cooking and cooling of canned goods
IPC: A23L3/06
Filed: 1933-05-05
Abstract: 404,191. Cooking canned goods. FOOD MACHINERY (M. & P.), Ltd., Park Works, Manchester. May 5, 1933, Nos. 13125 and 13126. Convention dates, May 13, 1932 and Oct. 10, 1932. [Class 49.] Canned goods are cooked in an atmosphere under pressure to prevent bulging of the cans and are then passed into the base of a vertical column containing cooling liquid and are raised gradually as cooling proceeds so that the external pressure diminishes as the pressure within the cans diminishes due to the cooling. When the cans have passed completely through the cooling liquid they are subjected to cooling sprays. Fig. 1 shows a pressure cooker A and a cooler B. Cans are delivered to the cooker through a pressure tight valve 5 having can pockets 6. Steam under pressure is passed into the cooker by a pipe 9 and the condensate is drained away through a steam trap 11. The cans are passed through the cooker by a reel and spiral mechanism driven by gears 12, 15 which also drive the valve 5 through a gear 17. The cans are discharged from the cooker directly into the base of the cooler, by means of a pressure-tight valve 7 which delivers the cans on to a fixed helical can track 24 within the cooler. The cans are propelled up the track by a rotating reel 26 having a series of pusher bars 28 which engage the cans and also support them on the track. In order to compensate for the removal of the external steam pressure on the cans as they leave the cooker and enter the cooler the latter contains liquid 30. When the cans reach the upper surface of the liquid they are subjected to a spray from a pipe 34 and are finally removed from the cooler by a rotating star wheel 25. In order to prevent a fall in pressure in the can pockets of the valve 7 due to condensation of steam when they communicate with the liquid in the cooler air under pressure may be led into the valve casing through a pipe 31, or the drain pipe 11 in the cooker may be placed at a level slightly above the valve 7 so that the level of the condensate in the cooker is above the valve 7 which is thus kept full of liquid under pressure. Additional liquid may be introduced into the cooker to maintain the required level. A pipe 36 discharges the cooling liquid which has entered the pockets of the valve 7 and prevents it from being carried into the cooker. In a modification the cooler is closed at the upper end and by means of a two-way valve can be put into communication with the atmosphere or with air under pressure. The pressure in the cooler can thus be increased if necessary without increasing the depth of the cooling liquid and the height of the cooler.
Patent GB-1352665-A (GB)
Title: Lathe having a tool adjustment mechanism
IPC: B23Q17/22
Filed: 1972-03-21
Abstract: 1352665 Lathes; gauging HARDINGE BROS Inc 21 March 1972 [12 July 1971] 13140/72 Headings B3T and B3B In a lathe having a carriage 22 and a tool carrying assembly there is provided means for adjusting the position of the cutting tool horizotally and vertically to accurately align it with the lathe spindle axis, the carriage 22 being movable on a slide 20 in the direction of the axis of the lathe spindle 14 and is adjustable transversely of the spindle by tapered gibs 60, 62 acting on the dovetail sides of the slide 20, the gibs being longitudinally movable by screws which causes transverse movement of the carriage 22 relative to the slide 20. The carriage supports a swivel post 38 on which is mounted a tool support assembly 46 which is secured to the swivel post 38 by a tee bolt and guide locating in a tee slot 102 in the top surface of the swivel post 38. The tool support 46 includes a portion 112 fixed to the post 38 and a movable portion 116 which is actuated by a feed screw assembly to effect horizontal displacement of the portion 116 relative to the post 38. A cutting tool T mounted in a holder 150 is mounted to the portion 116 by co-operating vertical dovetail guides the holder being vertically displaceable by a feed screw, whereby the tool T is vertically adjustable relative to the post 38 and saddle 22. Dial gauges may be mounted on the various slide portions to permit by way of gauge members pre-setting of the tool position.
Patent GB-659009-A (GB)
Title: Organosilicon polyesters
IPC: C08G77/00
Filed: 1949-05-17
Abstract: Organo-silicon polyesters are made by reacting a di-basic acid with a compound of the formula AcCH2(R2SiO)nSiR2CH2Ac, in which Ac is an acyloxy radical, R is an alkyl or aryl radical and n is an integer, and removing the carboxy acid formed during the reaction. Dibasic acids specified are succinic, adipic, phthalic, malonic and maleic acids.  Siloxanes of the above formula may be made by reacting a compound of the type (ClCH2R2Si)2O with a metal salt of a carboxy acid, e.g. potassium acetate, in the presence of a solvent, e.g. acetic acid, for the salt, thus bis-(acetoxymethyl)-tetramethyl- and bis-(acetoxymethyl)-dimethyldiphenyl-disiloxanes are examples made in this way of compounds of the above formula where n=1. Compounds of the above general formula in which n is an integer greater than 1 may be obtained by the above reaction of a metal salt of a carboxy acid with a linear di-organosilane end-blocked with chloromethyldimethylsilyl groups prepared according to Specification 635,733.  In examples, bis-(acetoxymethyl) tetramethyldisiloxane is reacted with (1) succinic acid, and (2) adipic acid, removal of acetic acid being aided by blowing carbon dioxide through the mixture, while the respective acid anhydrides formed during the reaction are removed by filtration to leave pale viscous liquids which may be esterified with alcohols such as glycerine or pentaerythritol; (3) bis-(acetoxymethyl)-dimethyldiphenyl-disiloxane is heated with adipic acid and nitrogen bubbled therethrough.ALSO:A siloxane of the general formula AcCH2.R2SiOSiR2CH2Ac, in which Ac is an acyloxy radical and R is an alkyl or aryl radical, may be made by reacting a compound of the type (Cl.CH2R2Si)2O with a metal salt of a carboxy acid, e.g. potassium acetate, in the presence of a solvent, e.g. acetic acid, for the salt, thus bis-(acetoxymethyl)-tetramethyl- and bis-(acetoxymethyl)-dimethyl-diphenyl-disiloxanes may be prepared in this manner.