baber/WOPTO huggingface dataset:
Patent GB-853736-A (GB)
Title: Steroids and the synthesis thereof
IPC: C07J1/00
Filed: 1957-04-03
Abstract: The invention comprises cyclopentanophenanthrene compounds of the general formula:  <FORM:0853736/IV(b)/1> wherein the 1, 2-and 4, 5-position we saturated or both are double-bonded or only the 4, 5-position is double bonded, R represents hydrogen and R1 represents a b -hydroxy group or wherein R and R1 together represent a keto group, and X represents an a -halogen atom, and the preparation thereof by treating a compound of the general formula: <FORM:0853736/IV(b)/2> wherein the 1, 2-and 4, 5-positions are saturated or both double-bonded or only the 4, 5-position is double bonded and R, R1 and X have the above significance, with an oxidising agent in an acidic medium.  Suitable oxidising agents are compounds containing a hexavalent chromium ion e.g. chromic oxide, or compounds containing a bismuthate ion e.g. an alkali metal bismuthate such as sodium bismuthate.  Glacial acetic acid is a suitable reaction solvent.  If an 11b -hydroxy substituted reactant is used, the androstane product formed will depend upon the oxidising agent used. Thus if chromic oxide in glacial acetic acid, an 11-keto derivative is formed whereas if sodium bismuthate is employed the 11b -hydroxy group is unaffected and an 11b -hydroxy-androstane is produced.  The specification refers to a number of suitable 12-iodo, fluoro, bromo and chloro substituted reactants and products.  The examples particularly exemplify the preparation of 12a -chloro-4-and-rostene-3, 11, 17-trione and the corresponding 12a -fluoro, bromo and iodo compounds, 12a -chloro-4-androstene-11b -ol-3, 17-dione and the corresponding 12a -fluoro, bromo and iodo compounds, 12a -chloro-1, 4-androstadiene-3, 11, 17-trione ml the corresponding 12a -fluoro compound, and 12a -chloro-androstane-3, 11, 17-trione.  17a -methyl-17b -hydroxy, 17a -ethyl-17b -hydroxy, and 17b -hydroxy-12-a -halo-androstane compounds are prepared by converting the 12a -halo steroids of the above general formula into the corresponding 3-ethylene ketal compounds or the corresponding 3-enamine compounds derived from a secondary base such as pyrrolidine, and either reducing the 3-ethylene ketal or 3-enamine compounds with an alkali metal boron or aluminium hydride to form the corresponding 17b -hydroxy compounds (an 11-ketonic oxygen is also reduced to an 11b -hydroxy group), or treating with a Grignard reagent such as methyl magnesium iodide or ethyl magnesium bromide to form the corresponding 17a -methyl-17-hydroxy-and 17a -ethyl-17a -hydroxy-steroid compounds.  17a  - Ethinyl - 17b  - hydroxy - 12a  - halo - androstone compounds are prepared by treating the 12a -halo-steroids of the above general formula with sodium acetylide in liquid ammonia.
Patent GB-108360-A (GB)
Title: Improvements in or relating to Blowpipe Burners.
Inventor: FOX LEONARD MONRO
IPC: F23D14/46
Filed: 1916-08-03
Abstract: 108,360. Fox, L. M. Aug. 3, 1916. Handles; plug cocks.-In a blowpipe burner, a pin c<2> passes through the stem of a cock C<1> and through a slot in the boss of a hand wheel C<2>, which is held in position by a nut c<4> and spring washer c'. Movement of the cock is limited by the engagement of the pin with a stop a<3>.
Patent GB-1037206-A (GB)
Title: Improvements in or relating to ironing machines
IPC: D06F65/06
Filed: 1965-03-16
Abstract: 1,037,206. Friction clutches. G. M. PFAFF A.G. March 16, 1965 [March 23, 1964], No. 11013/65. Heading F2C. [Also in Division D1] Two one-way friction clutches are provided at the ends of a shaft of a reversible electric motor 12 in such a manner that for one direction of rotation one clutch is operative and the second one is operative in the opposite direction. In each clutch a coil spring 24 is provided between two clutch sleeves 17 and 22 the internal diameter of the coil being less than the external diameters of the sleeves 17, 22 over which it is located to exert a slight pressure thereon. The inner end of the spring 24 is bent and the bent end engages a bore in the sleeve 17. When the motor is rotated in one direction the effect on one clutch will be to decrease the coil diameter of the spring-and as the pressure increases on the sleeves 17, 24 the clutch will be engaged, the effect of rotation in this direction on the other clutch however will be to increase coil diameter and hence disengage the clutch. Rotation of the motor in the opposite direction will produce the opposite effect on each clutch.
Patent GB-718641-A (GB)
Title: Improvements relating to tobacco smoke filtering bodies for use in or with tobacco products and methods of manufacturing such bodies
IPC: A24D3/08
Filed: 1952-05-01
Abstract: A tobacco smoke filtering body for use in or with cigarettes, cigars and the like is made by moulding a shaped mass from a pulp of wet fibres of no particular arrangement as regards the direction in which the fibres lie, de-watering the shaped mass by means other than evaporation, and drying the de-watered mass by the application of heat, the resultant filter having a self-supporting body of the shape to which the wet pulp was first moulded and being devoid of continuous channels extending through it other than the fine interstices between adjacent fibres therein.  The de-watering operation preferably comprises sucking off the bulk of the water by a vacuum and the drying operation is preferably performed by high frequency electrical heating, a final drying in an oven being added if desired.  The mass of fibres is subjected to mechanical oscillations immediately prior to the moulding operation and preferably also during the moulding and subsequent operations, the oscillations being produced by stirrers or shakers and being of higher frequency, e.g. ultrasonic frequencies, in the moulding and subsequent stages than in the stage prior to moulding.  The fibres used may be wood cellulose fibres either alone or mixed with cotton, wool, asbestos, or plastic fibres such as nylon.  The length of the fibres is preferably less than half the length of the filtering body and the surface of the completed filter may be sprayed or otherwise coated with a binding agent to seal the pores.
Patent GB-1346315-A (GB)
Title: Heel lasting machine
IPC: A43D25/18
Filed: 1971-05-14
Abstract: 1346315 Boots &c L N GODLEY J S KAMBORIAN Jnr and M M BECKA 14 May 1971 [28 May 1970] 11089/72 Divided out of 1346313 Heading A3B The subject-matter of this Specification forms part of that described in Specification 1,346,313, but the claims are concerned with a heel lasting machine in which the last is initially supported by a last pin and a toe rest, the last supporting assembly is then raised to clamp the last between a hold down and the last pin, this clamping causing the last to tilt so that the toe end of the last rises from the toe rest, and in which the toe rest is thereafter raised into yielding engagement with the last.
Patent GB-216116-A (GB)
Title: Improvements in electric safety lanterns
IPC: F21L14/00
Filed: 1924-05-05
Abstract: 216,116. Edison, T. A., (Assignee of Payne, P. D.). May 17, 1923, [Convention, date]. Head lamps, personal.-In an electric safety lamp the bulb L is pressed against a window 8 of non-shatterable glass by means of springs 58 which, in the event of the bulb being broken, force the bulb cap away from the terminal 43 and so break the electric circuit. The bulb is mounted in a holder 56 slidable on rods fixed in a baseplate M to which the supply wires 65, 66 are secured. The lantern casing is formed in two separable parts 1, 3 connected together by a bayonet fastening 5. The glass is secured to a flange on the casing by a split bezel 9 that embraces both. An inclined surface 11 on the bezel causes the glass to be pressed against the flange when the bezel is contracted in diameter. The ends of the bezel are held by a clasp 14 having claws 16 to engage in a pair of a series of slots in the bezel. A catch 25 slidable on the clasp 14 is adapted to engage under the bezel to retain the clasp in position. The rear section 3 of the casing has an upstanding perforated lug 31 adapted to be registered with a corresponding lug on the clasp 14 and to be secured to it by a soft metal seal 33 which is engaged behind the catch 25 to prevent this from being withdrawn to release the clasp. The reflector R is fixed by a flange on its front edge lying between the edge of the casing and the glass, and a second reflector R<1> is clamped between the bulb and its holder. A ring 38 lying behind the reflector R reinforces the casing against external blows. The cable 76 enters the casing through a metal tube 77 having a conical seating in which a split annular wedge 79, having ears 80 clasping the cable, is pressed to clamp the cable in the tube to prevent strains from being transmitted to the wires 65, 66. The end section of the cable is protected by a metal spiral 82 and is supported by a clip 93 riveted to a bracket 85 having a hook 87 by which the lantern is supported on the miner's cap. One leg 86 of the bracket is bent around the back of the casing and is riveted to it at 88, while the screw 40 that secures the bulb-holder assists in holding the bracket, and a second leg 89 terminates in a ring clamped between the tube 77 and the casing 3.
Patent GB-623290-A (GB)
Title: Radio frequency inductive coupler
IPC: H01F19/00
Filed: 1947-04-25
Abstract: 623,290. Transformers. STANDARD TELE. PHONES & CABLES, Ltd., and TAYLOR, F. H. April 25, 1947, No. 11135. [Class 38,(ii)] [Also in Group XL (c)] An inductive coupler through which highfrequency radio energy is transferred between a fixed and a rotatable circuit such as an aerial comprises two substantially circular inductively coupled loops 26, 44, mounted in relatively movable parts 23, 34 of a cylindrical conductive housing in coaxial and'substantially coplanar relationship. When two aerials rotate together, a further pair of coupling loops 30, 51, are mounted in similar relative positions in the two parts of the housing and separated from the first pair of loops by the cylindrical screens 24 and 35, 36. For the sake of clarity the two loops of each pair are not shown in the same plane in Fig. 2. Each loop has a small gap, and one end of each is connected to the inner conductor of one of the coaxial leads 19, 19, 37, 41, the outer conductors of which are bonded at 25, 25, 49, 50 to the respective parts of the housing to which the other ends of the loops are connected. Variable condensers 29, 31, 40, 43 are interposed between the loops and the leads, whereby the optimum coupling for any frequency is obtained by series tuning. Leads 19 pass along the hollow shaft 3 of the motor driving the aerials, which shaft is integral with part 23 of the housing, while leads 37, 41 end in a screening box 38 integral with housing part 34.
Patent GB-293926-A (GB)
Title: Improvements in or relating to radio apparatus
IPC: H03F1/16
Filed: 1927-04-26
Abstract: 293,926. Burndept Wireless, Ltd., and Phillips, C., F. April 26, 1927. Thermionic amplifiers and detectors. - In a neutralized valve receiver a second condenser is provided and connected in such a manner that its capacity is added to the capacity to be neutralized and so correlated to the neutralizing condenser that as the capacity of one condenser increases the other decreases. The Figure shows a valve v associated with a frame aerial a and provided with a neutralizing condenser c'. A common movable armature 1 with. the fixed armature 2 forms the neutralizing condenser c<1> while the second condenser c<2> comprises the armature 1 and the fixed armature 3.
Patent GB-1453104-A (GB)
Title: Door hinge having a
IPC: E05D11/10
Filed: 1974-03-13
Abstract: 1453104 Hold-open door hinge ED SCHARWACHTER KG 13 March 1974 [13 March 1973] 11207/74 Heading E2F  A hold-open door hinge comprises hinge leaves 1 and 2 connected by hinge pin 3, a torsion spring having a central portion 5 secured in a groove 6 by indentations 9, 9' to a base portion 4 of leaf 1, a roller 13 (13' Fig. 4) carried by one end 12 of the spring, and a steel cam plate 15 engaged by the roller which is secured at 18 to a side web of leaf 2, and which defines retaining recesses. The groove 6 which receives the torsion spring is formed with one steep (7) and one inclined (8) side and the indentations 9, 9' form projections which extend from the sides over the spring. The roller can be either smooth (13, Figs. 1, 2) or peaked (13' Fig. 4) and the cam plate may have peaks gently inclined in the opening direction and steeply inclined in the closing direction (Fig. 5 not shown). Leaf 2 is preferably formed from an iron casting and leaf I from a rolled section. A portion 26 constitutes a limiting stop for the hinge.
Patent GB-916693-A (GB)
Title: Purification and production of nitric oxide
IPC: B01D53/46
Filed: 1960-03-30
Abstract: Nitrogen dioxide and oxygen are selectively removed from mixtures containing them and also nitric oxide, by contacting the mixture together with a fuel selected from hydrogen, carbon monoxide, or a gaseous hydrocarbon, for example methane, with a platinum group metal catalyst, preferably at 100 DEG F. to 700 DEG C., at a pressure of 0 to 100 psig. and at a space velocity of 10,000 to 240,000 SCFH/CF. The fuel is preferably present in a quantity at least equal to the oxygen equivalent of the mixture.  Catalysts preferred are platinum, palladium, rhodium and nithenium, for example on carriers, and may be in the form of powder or pellets. Specifications 849,842, 871,755, 883,944, 883,945 and 883,946 are referred to.
Patent GB-1420412-A (GB)
Title: Self-monitoring pressure or temperature sensing device
IPC: H01H35/26
Filed: 1973-03-08
Abstract: 1420412 Valves ZENTRA ALBERT BURKLE KG 8 March 1973 [8 March 1972 4 Jan 1973] 11289/73 Heading F2V [Also in Divisions G1 and H1] A self-monitoring pressure or temperature sensing device to actuate, e.g. a valve, comprises a hollow expansion member 11 containing a fluid the pressure of which is dependent on the pressure or temperature being sensed and having a movable wall portion 19 forming a partition between the interior of the expansion member and a hermetically sealed chamber 10 containing a gas at higher pressure than the fluid in the expansion member 11, the wall 19 being spring- loaded to urge it in a direction to reduce the volume of the sealed chamber 10, an indication being produced when any wall of the sealed chamber 10 is punctured. The fluid in the expansion member 11 is a gas or a liquid for pressure monitoring, or a gas, a liquid, a wax, a liquid-vapour system, or a gas in conjunction with an adsorptive substance, for temperature monitoring. Fig. 3 shows a device for regulating or monitoring pneumatic or hydraulic pressure in a pipe 40. A bellows 14<SP>1</SP> in the pipe is connected by a capillary tube 13 to a bellows 12 in a sealed vessel 10, the system 12, 13, 14<SP>1</SP> forming the expansion member 11. The bellows 12, 14<SP>1</SP> contain compression springs 20, 47. The free end 19 of bellows 12 acts via a lever 22 on a member 24, e.g. a valve controlling member of a valve for the pipe 40. The lever 22 is loaded by a compression spring 23. To avoid ambient temperature influence on the apparatus, the gas 16 in the vessel 10 is maintained at constant temperature by a bimetallic thermostat 42 controlling a heat element 43. If a leak in tube 13 or bellows 14<SP>1</SP> allows the bellows 14<SP>1</SP>, 12 to collapse, the lever 22 trips an alarm or safety switch 41. If a leak in the bellows 12 or vessel 10 occurs, the lever 22 is moved to an extreme (chain dotted) safety position to close the valve. Fig. 1, not shown, relates to a similar apparatus for temperature monitoring, the ambient temperature compensation being omitted in this case.
Patent GB-182954-A (GB)
Title: Improvements in ribbon mechanism for typewriters
IPC: B41J33/514
Filed: 1921-04-19
Abstract: 182,954. Rogers, H. F., (Woodstock Typewriter Co.). April 19, 1921. Ink-ribbon mechanism.-Automatic feed-reversal mechanism comprises members which are reciprocated at each operation of the machine and co-operate with universally-mounted levers controlled by the ink-ribbon on the spools. In the mechanism shown in Figs. 2 and 3, each spool 74 is associated with the following mechanism. The spool shaft 75 is provided with a ratchet-wheel 76 co-operating with a feed-pawl 77 and a detent 85. the feed-pawl being connected to an arm 79 on a rock-shaft 80 which is connected to a universal bail 83 operated by the type-levers. The detent is secured to a yoke 86, pivoted on a stationary pin 87, and is provided with a headed pin 88 passing through a slot in the feed-pawl, a spring 99 being stretched betwen the voke and the feedpawl. The yoke engages a pin 91 on an arm 92,. secured to a sleeve 109 which can rock on a stationary vertical pivot 110. A feeler 100, Fig. 3, engaging the inner coil of the ink-ribbon, is pivoted on a sleeve 102 on the spool shaft, and engages the end 105 of a rod 104 which can slide in the spool shaft. The arm 92 is provided with a pin 93 engaging a grooved collar 94 on a rod 95 which can slide in the rock-shaft 80. A universally-mounted lever, consisting of a forked arm 107 mounted on horizontal pivots on the sleeve 109, engages a grooved collar 106 on the rod 104, and carries a roller 112 co-operating with a flange 113 on a reciprocating bar 114, which is connected to an arm 115 on the rock-shaft 80 and is reciprocated at each operation of the machine. The feelers normally retain the rods 104 and the arms 107 in the elevated position, the rollers 112 being out of the paths of the flanges 113. When, however, either spool is empty, the associated feeler permits the rod to drop, and the roller drops into the path of the flange. On the next operation of the machine, the arms 92, 107 are rocked bv the slide, and the pin 91 moves away from the yoke 86 and permits the spring 99 to move the feedpawl and detent into engagement with the ratchetwheel. Simultaneously, the rod 95 rocks the arm 92 associated with the full spool, and thereby causes the feed-pawl and detent of that spool to be released from the ratchet-wheel. The mechanism effects reversal positively and without strain on the ribbon. One of the arms 92 is formed with a V-end which passes over a roller on a spring-urged lever. The spool is provided with a grooved pin 118, Fig. 3, engaging a coupling- spring 117 on the sleeve 102. To prevent interference when a spool is placed on the spindle, the feeler is automatically raised when a spool is removed, bv means of a spring-urged lever 119 which is pivoted on the sleeve and is formed with a flange 121 engaging the feeler. An arm 122 of the lever normally abuts on the bottom spoolflange.
Patent GB-1460865-A (GB)
Title: Method of manufacturing a textured synthetic multifilament yarn  having alternately grouped
IPC: D02G1/02
Filed: 1974-03-14
Abstract: 1460865 False twist texturing MITSUBISHI RAYON CO Ltd 14 March 1974 11540/74 Heading D1F A method for producing a synthetic multifilament textured yarn with compact and bulky portions comprises a conventional false twisting arrangement of supply roller 3, heater 4, giving a temperature between the softening and melting points of the yarn, false twister 5 and delivery rollers 6 followed by a stretching process to separate individual filaments, e.g. by roller 7 cooperating with delivery rollers 6, the stretch being restricted to below the limit of elastic deformation of the filaments, the yarn then being wound under overfeed. The yarn produced has alternate zones of S and Z twist, the zones also being alternately of compact and bulky configuration. The stretching step causes differential movement of the individual filaments in the compact parts due to slight differences of Youngs Modulus which breaks any adhesion between them and leads to an improved yarn. The stretching can be carried out in a separate winding operation Fig. 10 (not shown) or by deflecting rollers Fig. 11 (not shown), also a further heater can be situated in the stretching zone Fig. 12 (not shown). Examples are given using multifilament yarns of polyethylene terephthalate, polyester and polyamide. Specification 1431568 is referred to.
Patent GB-696711-A (GB)
Title: Improvements in or relating to mechanisms for the transformation of a movement at constant speed into a movement at a variable speed
IPC: F16H35/02
Filed: 1951-05-17
Abstract: 696,711. Toothed gearing. CHAMBON, Ltd. (Soc. D. Etudes De Machines Speciales). May 17, 1951, No. 11599/51. Class 80 (i). Cyclic variation of the speed of a driven gear 18 from a constant speed driving member 1 is obtained through the intermediary of a pinion 4 rotatably mounted upon the member 1 and in mesh with gear 18 which pinion is given an oscillation by means of a slotted arm 6 secured thereto engaging an adjustable pivot pin 8. The amount of variation of the speed of the driven gear 18 is dependant upon the position of pin 8 from the axis of the gear which position is adjustable in a fixed slotted member 10 by means of a rotary cam 16 which may be suitably driven to provide any desired variation of the position of pin 8 and hence the speed of the driven member 18.
Patent GB-1332649-A (GB)
Title: Lithographic image developer solutions
IPC: G03C5/40
Filed: 1970-08-04
Abstract: 1332649 Lithography E I DU PONT DE NEMOURS & CO 4 Aug 1970 [4 Aug 1969 8 Oct 1969] 11634/73 Divided out of 1332648 Heading G2M An aqueous solution for converting a silver image in a hydrophilic hardened cross-linkable colloid binder into a lithographic image (cf parent Specification No.1332648) has a pH of 0À5 to 6À0 and contains (a) 0À01-2 moles l<SP>-1</SP> of Cu (II) ions, (b) 0À01-0À5 moles l<SP>-1</SP> of halide ions capable of forming a silver salt no more soluble in water than Ag Cl, and (c) at least one of (1) at least 0À1 g l<SP>-1</SP> of an oleophilogenic compound and (2) an oxidizing agent capable of oxidizing Cu (I) to Cu (II), the molar ratio (a): (II) being from 1:5 to 100:1. Preferably (a) is provided by Cu (NO 3 ) 2 ; (b) is provided by KBr or Na Cl; (1) is KCNS, benzotriazole, 2-mercaptothiazoline, 6-nitrobenzimidazole, 3-amino-1, 2, 4-triazole, tannic acid, K 3  Fe(CN) 6  or K 4  Fe (CN) 6 ; (2) is benzoquinone, Hg Cl 2  or an Fe (III) salt; the solution may also contain a complexing agent (e.g. citric acid or K citrate), a rapid start-up agent (e.g.1,2,3-triphenylguanidine and/or cyanoguanidine) or other adjuvant (e.g. orthophosphoric acid, Na NO 2 , tartaric acid, acetic acid, K acetate and/or colloidal SiO 2 ).
Patent GB-846255-A (GB)
Title: Improvements in or relating to travelling-wave tubes
IPC: H01J23/50
Filed: 1959-04-07
Abstract: 846,255. Travelling-wave tubes. PHILIPS ELECTRICAL INDUSTRIES Ltd. April 7, 1959 [April 10, 1958], No. 11728/59. Class 39(1). The envelope of a travelling-wave tube has a portion 4 of relatively large diameter in the region of the gun 3 and a further portion 5 of smaller diameter which is embraced by the inner conductor 9 of the coaxial input line. This inner conductor couples with a metal layer 8 provided on the inner surface of the envelope portion 4. The outer conductor 10 of the line is joined at 11 to an extension 12 which merges at 13 into a part 14 of smaller diameter.
Patent GB-437596-A (GB)
Title: Improvements in wire stapling devices
IPC: B25C5/02
Filed: 1934-04-19
Abstract: 437,596. Stapling hand-tools. BOWNS, S., 382, Brincliffe Edge Road, Ecclesall, Sheffield. April 19, 1934, No. 11756. [Class 89 (iii)] A hand-tool for driving single staples comprises a body member a with cover plates c, d. The body member is formed with an open vertical slot a<1> to accommodate a spring - controlled plunger b and with a groove a<2> for a thin driver b<1> which is secured to, or integral with, the plunger b. A separate anvil g with a clenching die h has extensions g<1> which slidably engage a lug c<1> on the cover plate c, so that the tool can operate on work of different thicknesses. Single staples f are inserted in the lower end of the groove a<2>. The stroke of the plunger b is controlled by a pin b<2> and a slot in the plate c, and the plunger may be actuated by a lever.