baber/WOPTO huggingface dataset:
Patent GB-623756-A (GB)
Title: Improvements in electromagnetic wave guides
IPC: H01P1/04
Filed: 1946-09-18
Abstract: 623,756. Wave-guides. MILLER, C. W., SAXON, G., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 18, 1946, No. 28032. [Class 40 (v)] [Also in Group XL (b)] In a coupling arrangement for two waveguide sections 1, 2, with dielectric seals 3, 4 and flanged ends 7, 6 separated by solid dielectric, reflections at the inner ends of the dielectric seals are minimised by providing transformer sections of impedance equal to the geometric means of the impedances of the air and dielectric-filled guides. The transformer sections are formed by protuberances 8, 9 of dielectric material extending a length #/4 along the guide, where # is the mean wavelength of the energy in the air and dielectric-filled guides. The flanges 7, 6 are of length equal to a quarter wavelength in the dielectric. One dielectric seal 4 is provided with a boss 5 which engages a recess on the abutting face of the other dielectric seal 3.
Patent GB-480457-A (GB)
Title: Improvements in apparatus for adding one liquid to another
IPC: C02F1/68
Filed: 1936-10-15
Abstract: 480,457. Mixing fluids in flow. PATERSON, W. Oct. 15, 1936, No. 28068. [Class 86] Apparatus for adding minute quantities of one liquid to a stream of another comprises a vessel containing the first liquid which is gradually displaced by another from which it is separated by a float which prevents diffusion and also may indicate the level of the first liquid. As shown in the Figure, the vessel a is connected to the throat and upstream of a Venturi tube k, and the float b, which is of conical form and has a density between the densities of the two liquids, has an extension b<1> and an indicator c projecting into a transparent extension d of the vessel. In other forms the float has an upward extension riding in a transparent tube, or a sighting tube is provided at the side of the vessel in which rides a separate float.
Patent GB-535780-A (GB)
Title: Improved connecting means for knobs and the like
IPC: G05G1/12
Filed: 1939-10-18
Abstract: 535,780. Securing knobs on shafts. TINNERMAN, A. H. Oct. 18, 1939, No. 28121. Convention date. Dec. 1. 1938. [Class 80 (ii)] [Also in Group XXV] A knob 11 is attached to a shaft 25 by a spring clip made of a single strip of metal bent to form a socket for the shaft and spring arms 21 to grip the inner surface of the knob. Figs. 7 and 10 show other forms of the clip.
Patent GB-1042608-A (GB)
Title: Improvements in lighting sets
IPC: H02J7/24
Filed: 1963-07-17
Abstract: 1,042,608. Automatic voltage control. ROBERT BOSCH G.m.b.H. July 17, 1963 [July 26, 1962], No. 28226/63. Heading G3R. A voltage regulator for a generator includes two silicon controlled rectifiers one of which is connected in series with a shunt field winding of the generator. As shown, the regulator comprises a first s.c.r.34 connected in series with the field winding 16 of a generator 15 and having its control electrode 33 connected over a resistor 31 to the collector of a first control transistor 28; a second s.c.r. 37 connected in series with a resistor 41 between the output leads 18, 20 and having its control electrode 38 connected to the collector of a second control transistor 22 the base of which is connected over a Zener diode 24 to a tap 25 on a potentiometer 26 located between the leads 18, 20; and a capacitor 42 interconnecting the anodes 36 and 40 of the rectifiers 34 and 37. When the output voltage is below a predetermined value Zener diode 24 and transistor 22 are non-conducting whilst transistor 28 is fully conducting and provides a control current for the control electrode 33 of rectifier 34 which is thus rendered conductive so that field current can flow in the winding 16. During this time capacitor 42 is charged so that the capacitor plate connected to anode 40 has substantially the same potential as the positive lead 18. When the output voltage exceeds the predetermined value Zener diode 24 and transistor 22 become conducting and transistor 28 is blocked; part of the current from transistor 22 flows through the control path of rectifier 37 which is thus also rendered conductive whereby a negative potential is applied over capacitor 42 to the anode 36 of rectifier 34 which thus cuts-off and interrupts the field current. The output voltage then falls until it is below the predetermined value, when the cycle starts again. A capacitor 45 and resistor 44 provide positive feedback between the transistors 22 and 28. The regulator may include a third control transistor (Fig. 3, not shown) and may be provided with a voltage divider across the output terminals (Fig. 4, not shown).
Patent GB-280486-A (GB)
Title: Improvements relating to electrical remote control and signalling systems
IPC: H02J13/00
Filed: 1926-06-08
Abstract: 280,486. Siemens Bros. & Co., Ltd., and Humphries, H. E. June 8, 1926. Drawings to Specification. Selective distant control systems; tell-tale apparatus.-Relates to a system for controlling and supervising apparatus located at a plurality of remote stations connected across common control and signalling line wires. The system described is identical with that described in Specification 280,254, but the claims relate to the means for operating the supervisory signal lamps at the control station whereby when an apparatus unit at a substation changes its position either due to a control operation or automatically, a preliminary indication of the change is given and is changed manually by the operator into a final indication. When a unit changes its position, impulse trains characteristic of the sending substation and the unit are transmitted to the central station to operate step-bystep switches which effect the selection of the appropriate signal lamp. The signal lamp circuits of each apparatus unit are controlled by two differential relays and the arrangements are such that the incoming signal causes the appropriate lamp to flicker in order to signify that a change has taken place and indicate the nature of such change. The signal is acknowledged by the operation of a key at the control station to cause the steady illumination of the lamp. In a modification, an additional lamp, which is operated when a change takes place, is used instead of the flickering arrangement. The arrangement of relays meet the case where the condition of apparatus is signified by a final indication and the apparatus changes condition and then reverts to the former position so rapidly that only the signal of the former condition may be sent, in which case the final indication is changed to a preliminary indication in order that the change may be recorded. Specification 230,291, [Class 40 (iv), Telephones &c.], also is referred to.
Patent GB-188914-A (GB)
Title: Improvements relating to apparatus for developing and otherwise treating photographic films
IPC: G03D13/06
Filed: 1921-10-25
Abstract: 188,914. Crowe, W. J. Oct. 25, 1921. Containers for roll-films.-Apparatus for developing &c. roll-films comprises a casing 1 preferably of cylindrical form, having a removable support 2 upon which are rotatably mounted a roll-film spool 17, a spacing-band spool 18, and a winding-spool 22. The upper bearing 15 of the film spool is adjustable for different sizes of spool. The film and the spacing-band are wound simultaneously upon the winding spool 22 by operating an external handle 25 after fitting a light-tight cover 2. Rotation of the support 8 is prevented by a stop 26. Light trapped liquid inlet and outlet apertures 5, 6 are provided.
Patent GB-987685-A (GB)
Title: Improvements relating to gyrator locking arrangements
Inventor: BYRD GEORGE MAXWELL
IPC: D06F13/00
Filed: 1962-07-23
Abstract: 987,685. Locking bolts. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 17, 1963 [July 23, 1962], No. 28278/62. Heading F2H. [Also in Division D1] A bolt 8 is prevented from unscrewing by resilient or resiliently mounted elements engaging indentations. The resilient elements may comprise legs 13, Fig. 3, which extend parallel to the bolt axis and are moulded integrally with the bolt head 10 from polypropylene and engage in grooves in a recess 16. Alternatively Fig. 6 (not shown) the legs may comprise metal inserts, and in a third embodiment, Fig. 8 (in which the bolt head 10 is shown separated from the knurled shank end 12 to which it is normally secured), the resilient elements are spring arms extending from a phosphor bronze washer 32 and having V-shaped portions 34 which engage radial grooves 31. The washer 32 has lugs, Fig. 9 (not shown), securing it to the bolt head by engaging in recesses in the head face. Specification 987,684 is referred to.
Patent GB-600525-A (GB)
Title: Improvements in or relating to a process for the concentration of acetaldol
IPC: C07C45/78
Filed: 1945-10-26
Abstract: Acetaldol containing acetaldehyde, neutralized to a pH to 6.5 to 7.5, is passed in the form of a liquid film over a surface heated to a temperature of 90 DEG  to 110 DEG  C., the contact time being adjusted to a value not exceeding that required to reduce the concentration of acetaldehyde in the liquid to the equilibrium concentration at the temperature employed.  The preferred contact times are from 0.5 to 5 seconds.  The process may be carried out in a climbing film evaporator such as an S-shaped copper tube ( 1/4 inch to 3/8 inch I.D.) 3 feet long, the middle part of which is vertical and provided with a steam-jacket.  Crude acetaldol, containing not more than 70 per cent aldol, is fed in at the bottom at such a rate that the evolution of acetaldehyde is rapid enough to cause the liquid to climb upwards as a film. The vapours and concentrated liquid are discharged into a wider heat-insulated tube wherein they are separated, the latter being withdrawn to a cooler to prevent crotonisation.  A series of parallel tubes connected at the bottom to a single feed tube, and at the top to a single separator, may be used in place of the S-shaped tube.  A second stage operating under reduced pressure may be employed, if desired.  Specification 573,334, [Group IV], is referred to.ALSO:Acetaldol containing acetaldehyde is concentrated by neutralizing it to a pH of 6.5 to 7.5 and then passing it in the form of a liquid film over a surface heated to a temperature of 90 DEG  to 110 DEG  C., the contact time being adjusted to a value not exceeding that required to reduce the concentration of acetaldehyde in the liquid to the equilibrium concentration at the temperature employed.  The preferred contact times are from 0.5 to 5 seconds.  The purified acetaldol so obtained has a high degree of reactivity and may be readily hydrogenated to 1.3-butylene glycol at atmospheric pressure and at 70 DEG  C. using a Raney nickel catalyst.  The purified acetaldol may be rapidly oxidized to betahydroxybutyric acid by treating it between 50 DEG and 80 DEG  C. with oxygen in the presence of an oxygen - carrier catalyst.  Specification 573,334 is referred to.
Patent GB-889265-A (GB)
Title: Improvements in or relating to filter devices
IPC: B01D33/04
Filed: 1960-08-16
Abstract: 889,265. Filters. FORENADE SUPERFOSFATFABRIKEN A.B. Aug. 16, 1960 [Sept. 11, 1959], No. 28297/60. Class 46. A filter device comprises an endless carrier belt 1 supporting the longitudinal edges of the upper run a filter cloth 4, in slots 7 in marginal ribs 2 of the belt, and a rotatable conical roll 8 at each end of the device which bends the ribs outwards to continuously release the filter cloth at the transition from the upper to the lower rim and re-attach it at the termination of the lower run. The carrier belt 1 is preferably of rubber with reinforcing fabric embedded therein. The conical rolls are provided at their upper ends with a thin disc 9 of synthetic plastic to press the edges of the filter cloth into the slots 7. Alternatively the conical rolls may be replaced by tilted cylindrical rolls or sliding rails (not shown). The filter cloth may rest on an endless intermediate belt 3 during the upper run. In a modification, Fig. 7 (not shown), the conical rolls 8 are dispensed with, at the end of the device where the transition from the upper to the lower run takes place, and instead an auxiliary roll is arranged parallel to and outside the driving roll 5 and withdraws the cloth from the belt ribs when it reaches roll 5 on the upper run. A guide plate may be used to raise the filter cloth during the lower run before arrival at the conical rolls.
Patent GB-1523259-A (GB)
Title: Antitumor antibiotic sporamycin
IPC: A61K35/66
Filed: 1977-07-06
Abstract: 1523259 Sporamycin KITASATO INSTITUTE 6 July 1977 [10 July 1976] 28299/77 Heading C3H The antitumour antibiotic sporamycin having the following properties: (1) elemental analysis: carbon 44À72-47À38%; hydrogen 6À4-6À88%; nitrogen 13À9-15À0%; (2) ultraviolet absorption spectrum: absorption peaks at 285 nm. (shoulder), 276 nm,. 267 nm., 265 nm., 258 nm. and 253 nm. in an aqueous and 0À1 N hydrochloric acid solution; peak at 290 nm. in 0À1 N aqueous sodium hydroxide solution; (3) infrared absorption spectrum: absorption peaks at 3320 cm<-1>, 1640 cm.<-1> and 1520 cm.<-1> in KBr; (4) white powder; (5) solubility: soluble in water; insoluble in methanol, ethanol and acetone; (6) colour reaction: positive for Folin- Lowry, Ehrlich and biuret reactions; weakly positive for ninhydrin reaction; negative for Molisch, Fehling, Tollens and anthrone reactions; (7) molecular weight: 10,500-13,000; (8) amino acid analysis of 6N hydrochloric acid hydrolysis product (110 C.; 15 hours) : at least 12 kinds of amino acids: lysine, aspartic acid, threonine, serine, glutamic acid, glycine, alanine, valine, isoleucine, leucine, tyrosine and phenylalanine; (9) basic substance; (10 melting point: becomes brown at 220-225 C. and carbonizes with increasing temperature; and (11) [alpha]D<20>: approximately -56 (C=0À5, H2O) is claimed per se. It may be prepared by culturing Streptosporanjuim pseudovulgare in a conventional nutrient medium.
Patent GB-738573-A (GB)
Title: Improvements in and relating to circuits for operating electric discharge lamps
Inventor: BLOXSIDGE WILLIAM ROBERT
IPC: H05B41/18
Filed: 1951-12-03
Abstract: 738,573. Supply systems for space discharge lamps. THORN ELECTRICAL INDUSTRIES, Ltd. Aug. 7, 1952 [Dec. 3, 1951; Jan. 28, 1952], Nos. 28316/51 and 2339/52. Class 38 (4). A hot cathode discharge lamp 10 serially connected with a ballast impedance 14, 15 across input terminals 16, 20 is started by an electromagnetic relay having a first switch 21 arranged to serially interconnect the two filamentary electrodes 12, 18 of the lamp through the ballast to the source and having an operating coil 22 connected either in shunt, or as shown, in series, with a resistor 23 having a negative resistance/temperature coefficient; the circuit is such that, on starting, the switch 21 is closed to permit filament heating for a period predetermined by the time taken for the resistance of resistor 23 to fall due to heating thereof by current flow, whereupon the relay opens the first switch to start the lamp and maintains it open during running. As shown, the coil 22 and resistor 23 are shunted across the resistive part 14 of the ballast impedance and during running the resistor 23 is shunted by a second switch 24 of the relay. Two or more series-connected lamps may replace the single lamp shown, there being provided a respective first switch 21 for each lamp and all such switches operating sequentially. The circuit shown operates on D.C., but in a modification, not shown, for use on A.C., the coil 22 and resistor 23 in series are shunted across an auxiliary winding on the ballast inductance 15. In the embodiment wherein the coil 22 is shunted by resistor 23 such components are shunted, through an impedance, across the lamp the switch 21 being in this case normally open instead of normally closed as shown.
Patent GB-1027331-A (GB)
Title: Coal carbonisation process
Inventor: MAINHOOD JOHN STEPHEN ROWLEY
IPC: C10B47/18
Filed: 1961-08-04
Abstract: A process for treating coal particles to produce volatiles, e.g. acetylene and ethylene, and char, comprises heating the particles to above 700 DEG  C. (temperatures of 900 DEG , 1100 DEG  and 1325 DEG C. are mentioned) for a total heating period of less than 1 second, e.g. 0.2 second, in a region closed to the atmosphere, and rapidly cooling the volatiles and char to at least 500 DEG  C. and preferably to less than 200 DEG  C.  The particles, which may be preheated to 350 DEG  C., fall under gravity through an electrically heated furnace, or may be entrained in a carrier gas, e.g. recycled volatiles, and cooling is effected by a water-cooled catchpot.  A pump removes the volatiles from the catchpot and delivers them through a filter to a storage vessel, the pump maintaining a pressure of less than 30 mm. in the furnace and catchpot.
Patent GB-510398-A (GB)
Title: A faucet, particularly a water faucet
IPC: F16K1/38
Filed: 1938-09-30
Abstract: 510,398. Valve closures. KAPITAL UND INDUSTRIEWERTE AKT.-GES. Sept. 30, 1938, No. 28416. Convention date, Feb. 26. [Class 135] In faucets having a conical closure 9. 11 in addition to the washer 17 in the dished mount 16, the conical valve 11 is not connected to the valve spindle in any way. A central aperture 18 may be provided in. the washer to assist even wear, and the valve 11 may have guiding ribs 11<1> on its stem.
Patent GB-240675-A (GB)
Title: Improvements in variable resistance devices
IPC: H01C10/18
Filed: 1924-11-27
Abstract: 240,675. Jones, L. L. Nov. 27, 1924. Variable resistances; resistance coatings and deposits.-A variable high resistance has an insulating base 10 provided on one side with an arcuate channel 11 in which is placed a high resistance element a and a series of disconnected wire elements 20 pressed into intimate contact with the resistance s;rip a by a flexible arcuate wedge 23. The disconnected wire elements 20 may be formed by winding a wire on a flexible fibre or other core 19 and severing the windings along one side. The resistance strip a preferably comprises a paper, fibre, or other flexible base having a graphited or inked surface and may have regions of different resistivities, which may overlap to form transition sections. The resistance is varied by an arm b contacting with the wire elements 20.
Patent GB-336750-A (GB)
Title: Improvements in apparatus for obtaining water power from water supply systems
Filed: 1929-09-19
Abstract: 336,750. Kaspers, A. J. T. Sept. 19, 1929. Addition to 313,581, [Class 8 (i), Air and gases, Compressing &c.]. Liquid-pressure engines.-The apparatus of the parent Specification is modified by the employment of a reciprocating motor, the valves 11 of which are operated by an auxiliary piston 8 controlled by valves 13 operated from the main piston 4.
Patent GB-751084-A (GB)
Title: Method for the manufacture of hollow glass-ware
IPC: C03B9/16
Filed: 1954-10-04
Abstract: 751,084. Glass-blowing machines. VERRERIES MECANIQUES CHAMPENOISES. Oct. 4 1954 [Oct. 10, 1953], No. 28515/54. Class 56 In a bottle, jar or like blowing machine, the parison 6 during its transfer from the parison mould 1, 2 to the finishing, mould 7, 8 is supported at two places. As shown, the parison is formed in the inverted position and the support during transfer is afforded by the ring mould 3 and by a suction plate 5 applied to the bottom.
Patent GB-779866-A (GB)
Title: Improvements in beadings, mouldings or the like
IPC: B60N3/04
Filed: 1952-11-12
Abstract: 779,866. Binding edges of sheet material. BRIGHT, T. J. R. Nov. 3, 1953 [Nov. 12, 1952], No. 28547/52. Class 42 (1). [Also in Group X] A moulding comprises a continuous channelshaped clip 1 of aluminium, steel or plastic, and an enclosing ornamental fabric or other flexible covering 3 the longitudinal edges of which are turned inwardly and upwardly into the interior of the clip and secured by inwardly directed pressed out tangs 10 which both perforate the covering 3 and also engage the carpet 9 or other support, the clip 1 having spaced staggered slots extending inwardly from its opposite edges to render the clip capable of universal bending. The covering 3 may be. adhesively screwed to the clip 1 whilst in a flat condition and later bent to shape. The clip may be first covered with scrim before securing the covering 3. The Provisional Specification includes the subject matter of Specifications 779,868 and 779,867, [Group X]. Specifications 649,137 and 705,634, [both in Group X], also are referred to.
Patent GB-173867-A (GB)
Title: Improvements in or relating to air and gas mixing apparatus for use with gaseous fuel burners
IPC: F23D14/64
Filed: 1920-10-08
Abstract: 173,867. Needham, J. Oct. 8, 1920, Atmospheric gas burners.-An air and gas mixing-device for use in gaseous fuel burners comprises a main body portion 7 having a tapered portion 13 at its inner end and a flaring discharge 15 at its outer end forming the mixing-chamber, a supplemental body portion 5 secured at 8 to the main portion by screws and having an airinlet opening 9, and a fuel-gas supply device 18 having a nozzle 20 adjustably mounted in the portion 5 and movable towards and from the throat 14 of the main body portion to regulate the mixture of gas and air passed to the burner. A screen 10 may be attached to the air-inlet opening 9. The discharge end of the sleeve 16 is screwed at 17 to facilitate connection with the burner.
Patent GB-207178-A (GB)
Title: Improvements in and connected with means for recording vibrations
IPC: G11B7/00
Filed: 1923-11-13
Abstract: 207,178. Aktiebolaget Filmfotofon, (Assignees of Berglund, S. O. F. A.). Nov. 16, 1922, [Convention date]. Vibrations, indicating and recording.-In apparatus for sound or other vibrations of the type in which the image of a diaphragm b, Fig. 1, disposed between a source of light L and a reflector p carried by the vibratory member m is projected through a slot s of definite width on to a travelling sensitized band f. The diaphragm is constructed with contours of such a nature that a vibration in an intermediate part of a range of vibrations will produce a relatively greater effect than a vibration at the extreme ends of the range. The contours or serrations may be of different order at different parts of each projection as shown at x, y, z, Fig. 3, or the projections may differ from one another along the serrated edge as shown in Fig. 4.
Patent GB-869097-A (GB)
Title: Process for isolating epichlorhydrin from a mixture thereof with a carboxylic acid of low molecular weight
Filed: 1958-09-08
Abstract: Epichlorhydrin is isolated from a mixture thereof with a carboxylic acid of low molecular weight by subjecting the mixture to fractional distillation in the presence of a small quantity of water (see Group III).  The epichlorhydrin may be prepared by gently heating allyl chloride with 40% commercial peracetic acid p  until the acid has been completely converted and then distilling off the excess allyl chloride and some water to leave a mixture of epichlorhydrin and acetic acid: or by treating allylchloride in a stirring vessel of stainless steel with a solution of acetaldehyde and monoperacetate in glacial acetic acid.ALSO:Epichlorhydrin is isolated from a mixture thereof with a carboxylic acid of low molecular weight by subjecting the mixture to fractional distillation in the presence of a small quantity of water.  The amount of water is preferably less than 30 parts per 100 parts of epichlorhydrin and at least a part of the water which distils is returned to the fractionating column.  In a typical example, a mixture of 2 Kgs of epichlorhydrin and 8 Kgs of acetic acid is mixed with 600 grams of water and distilled in a through-flow column at 60 mms with the still heated at 60 DEG C.  An azeotropic distillate which boils at 31 DEG -32 DEG C. is continuously withdrawn and is allowed to separate.  The lower phase consists of 97% of epichlorhydrin, 2-3% of water and 1% of acetic acid and can be converted into pure epichlorhydrin by treatment with solid potassium carbonate.