baber/WOPTO huggingface dataset:
Patent GB-385350-A (GB)
Title: Improvements in oscillation generators with cyclically variable frequency
IPC: H01J25/00
Filed: 1931-08-19
Abstract: 385,350. Inductances. COMMUNICATION PATENTS, Inc., 60, Broadway, New York, U.S.A. Aug. 19, 1931, No. 23348. Convention date, Dec. 30, 1930. [Class 37.] The frequency-determining inductance of a valve or other oscillator is constituted in part by a pair of electrode rails along which an arc discharge travels, the frequency of the oscillator being thus varied in a cyclic manner. As shown in Fig. 1, the rails 11, 12 are circular and the arc 15 which completes the plate circuit of the valve 5 travels in a circular path. The rails may be enclosed in an exhausted or gascontaining envelope, or may be in open air. The arc may be caused to travel by the field created by the arc current, or an auxiliary field may be created by a turn of wire 19, Fig. 2, traversed by a reversible direct current, or by an alternating current. In Fig. 2, the arc passes between an upper pair of straight rails and returns along a lower pair, whilst in Fig. 3; the arc 23 travels outwards and extinguishes at the flared end 24 of the rails, then re-igniting at the point 23.
Patent GB-1340769-A (GB)
Title: Process for the manufacture of a 9alpha-chloro-11beta-hydroxy- steroids
IPC: C07J51/00
Filed: 1971-04-19
Abstract: 1340769 Preparation of 9α-chloro-11#- hydroxy-steroids SCHERING AG 19 April 1971 [7 March 1970] 23386/71 Heading C2U 9a-Chloro-11#-hydroxy-steroids are prepared by treating #<SP>9(11)</SP>-steroids in an inert anhydrous solvent of dielectric constant above 25 at 25 C. with t-butyl hypochlorite and perchloric acid. Suitable solvents are nitromethane, nitroethane and nitrobenzene. In the products acyloxy groups may be hydrolysed and hydroxy groups acylated.
Patent GB-784683-A (GB)
Title: Improvements in or relating to the application of liquids to moving bands or strips
IPC: A21B1/48
Filed: 1954-08-12
Abstract: 784,683. Greasing baking surfaces. VICARS, Ltd., T. & T., and NAYLOR, J. F. Aug. 11, 1955 [Aug. 12, 1954], No. 23401/54. Class 28 (1). [Also in Group VIII] A device for applying liquid to a moving band 1, e.g. an endless oven band, comprises a container 10 adjustably pivoted about its longitudinal axis and supplied with liquid so as to tend to maintain it above a weir edge close to the band where it moves at an angle to the horizontal so that the liquid overflows into contact with the band 1, surplus liquid being caught in a trough below the container and recirculated. Endless band 1 passes round a terminal drum 2 mounted so as to be longitudinally adjustable to tension the band. Oil or fat is delivered through a valve 7, pipe 8 and perforated pipe 9 into container 10 which is pivotally mounted between side-plates 5a so that the edge 10a can be adjusted into close proximity with band 1. Adjustment is effected by a screw setting arrangement 11 and is limited in one direction by a screw stop 12. A preferably felt doctor blade 13 is held between clamp plates 14 secured by screws 15 to an angularly adjustable bar 16 extending between plates 5a. A sump 19 mounted between plates 5a on angle sections 20, 21 extends beneath container 10 and doctor blade 13 and is connected to the inlet pipe of motor-driven pump 27. A float in sump 19 actuates a switch controlling the pump 27 so that, when the liquid level in sump 19 reaches a certain height, the liquid is fed back to tank 6. The angle sections 20, 21 together with plates 5a are slidable relative to the main frame supporting the conveyer by set-screws 23, 24. Container 10 is mounted so that the contents may be tipped into sump 19 at the end of the operation.
Patent GB-598810-A (GB)
Title: Improvements in or relating to abrasive articles and methods for their manufacture
IPC: B24D7/00
Filed: 1945-09-11
Abstract: Grinding or polishing wheels and tools are formed from pieces of felted fibrous material with which abrasive materials have been incorporated, arranged in haphazard or non-stratified form and bonded together by means of an artificial resin binder.  The fibrous material is formed as described in Specifications 555,640 and 557,038, [both in Group XXIII], and the webs are cut or otherwise reduced to small pieces approximately 1/16 inch square and a urea or phenol-formaldehyde resin is incorporated. The material is fed into a mould, compacted by heat and pressure, and finally cured by heat.ALSO:Grinding or polishing wheels and tools are formed from pieces of felted fibrous material with which abrasive materials have been incorporated, arranged in haphazard or non-stratified form and bonded together by means of an adhesive.  The fibrous material is formed, as described in Specifications 555,640 and 557,038, [both in Group XXIII].  The webs are cut or otherwise reduced to small pieces, approximately 1/16 inch square, an adhesive binder is incorporated, e.g., glue adhesives treated with a plasticizer such as ethylene glycol, dibutyl phthalate, glycerine, or the like, casein glues, natural or artificial rubber latices, or other natural or artificial resins alone or in admixture.  The webs may have been coated with the adhesive before cutting-up.  The material is fed into a mould, compacted by heat and pressure, and finally cured by heat.
Patent GB-994516-A (GB)
Title: Process for recovering anhydrous sodium sulphate and sulphuric acid
IPC: C01D5/16
Filed: 1962-06-18
Abstract: <PICT:0994516/C1/1> Sulphuric acid and anhydrous sodium sulphate are recovered from the waste coagulating bath acid from the viscose process by seeding the preconcentrated waste acid solution, constituting a metastable super-saturated solution of sodium sulphate in sulphuric acid, with anhydrous sodium sulphate, and separating the crystals of anhydrous sodium sulphate formed. Preferably, the "seed" is obtained by concentrating and cooling the waste bath acid, and separated and dehydrating the precipitated hydrous sodium sulphate. Sulphuric acid is recovered in the plant to the left of inlet 1 in Fig. 1; waste acid solution introduced at 1 is concentrated in heat exchanger 5 and evaporator 6 and passed into crystallizer 8 into which is charged a slurry of anhydrous sodium sulphate supplied from tank 40 by line 43; anhydrous sodium sulphate crystals formed are withdrawn as slurry through tank 45 and filter 46; saturated sodium sulphate solution overflowing from the crystallizer at 9, 11 is recycled, or transferred to storage tank 13, respectively; the solution from 13 is vacuum evaporated in 15 and 16 and directed for the major part into storage tank 18 for recovered sulphuric acid, and for the minor part into vacuum crystallizer 20; in 20 the saturated solution deposits hydrated sodium sulphate which is filtered at 22, the mother liquor passing to acid storage tank 18 and the crystals being charged into tank 23 on the right-hand side of the Figure.  On this side is plant for the production of anhydrous sodium sulphate from the decahydrate; from the sodium sulphate solution in 23 anhydrous sodium sulphate precipitates; the crystal-containing solution is transferred to tank 25 from which some of the supernatural liquor is recycled to 23, and from which a crystal slurry of anhydrous sodium sulphate is withdrawn to centrifuge 38; the mother liquor from the crystals is fed, together with supernatant liquor from 25, to tank 29 and is cycled through heat exchanger 37 and evaporator 33 until super-saturated in sodium sulphate; in crystallizer 34 anhydrous sodium sulphate precipitates from the super-saturated solution, as in 23, and a slurry thereof is withdrawn to tank 25, supernatant from 34 being recirculated through the heat exchanger and evaporator, anhydrous sodium sulphate is recovered in centrifuge 38.  Precipitation of anhydrous sodium sulphate from sodium sulphate solution is effected where indicated by maintaining the solution temperature above 32.4 DEG  C. i.e. the transition temperature of the change Na2SO4.10H2O --> Na2SO4 (anhydrous).
Patent GB-778444-A (GB)
Title: Apparatus for temporarily connecting together perforated flat parts, such as metal sheets
Inventor: REINIGER WALDEMAR
IPC: F16B5/06
Filed: 1955-08-16
Abstract: 778,444. Clamp fastenings. WAGGONUND MASCHINENBAU GES. Aug. 16, 1955, No. 23532/55. Class 44. In apparatus for temporarily connecting to each other perforated flat parts such as metal sheets 22, 23, each having holes adapted to register with the corresponding holes in the other for receiving permanent connecting means such as rivets or the like, of the kind which includes a mandrel 3 which fits into the holes and may be pushed out of the base 2 of a sleeve-like pressure member 1 against the resistance of a helical spring 8 encircling the mandrel and which reacts against an abutment 7 secured to the rear end of the mandrel, the base of the sleeve being used as a guide for the mandrel and also as a pressure member which abuts on one outer side of the parts to be connected for as long as the temporary connection is effective, the mandrel being provided with a diametral longitudinal slot 14 receiving a locking member 16 which is formed by a spring wire bent U-shaped as in a hairpin, one limb 17 of this U-shaped locking member being curved in the form of a hook and being hooked over the end coil of the said helical spring adjacent the base of the sleeve whilst the other and longer limb 19 is disposed against a steeply inclined surface 15 which limits the longitudinal slot in the mandrel and extends towards the point 4 thereof, the said steeply inclined surface 15 within the mandrel is adapted to enter between the two limbs 17 and 19 of the locking member 16 when the apparatus is released to the locking position and is so fashioned that the longer limb 19 of such locking member is thereby deflected away from the shorter link and placed under tension when in said position. The hook in the limb 17 embraces at least two turns of the helical spring to stiffen the limb against deflection when the longer limb is deflected. The abutment 7 is a cup which slides within the sleeve 1 and it is provided with a longitudinal slot 10 through which a flattened head 9 on the mandrel protrudes. The mandrel is engaged with the abutment by turning the head through 90 degrees after it has passed through the slot 10 so that it engages two depressions provided in the abutment. The end of the sleeve adjacent the abutment 7 is flanged or rolled to provide an abutment for engagement by one jaw of an operating tool the other jaw of which presses on the base 6 of the abutment 7 to push the mandrel out of the sleeve. When the mandrel is pushed out of the sleeve the limb 19 of the locking member 16 is positioned in the slot 14 and the mandrel and locking member can then be passed through the holes in the parts to be fastened. When the operating tool is released the mandrel moves back into the sleeve under the pressure of the spring 8 and the surface 15 moves the limb 19 of the locking member out of the slot 14 to lock the two parts together.
Patent GB-885482-A (GB)
Title: Improvements in or relating to methods and devices for separating components from a gas and/or vapour mixture
IPC: B01D7/02
Filed: 1958-07-23
Abstract: 885,482. Cold separation of gas mixtures. PHILIPS' GLOEILAMPENFABRIEKEN N. V. July 23, 1958 [July 26, 1957], No. 23701/58 Class 8(2). Readily condensible impurities e.g. water carbon dioxide and acetylene are separated from a gas mixture e.g. air to be rectified or merely liquefied by passing the mixture through a layer of snow formed on a gauze 2, Fig. 1, supported by vertical radially extending copper strips 1 and horizontal radial strips 4 ; the lower ends of the strips 1 and gauze 2 dipping into a liquid air gutter 3. As shown in Fig. 3 water is trapped by snow formed on an outer gauze 2a and carbon dioxide on snow formed on an inner gauze 2; the copper strips 1, 4 being carried by the cold head 9 of a gas refrigerator of the reversed hot gas engine type.
Patent GB-1103843-A (GB)
Title: Storage and supply enclosures for photoelectrostatic copy sheets
IPC: G03G15/00
Filed: 1965-06-03
Abstract: 1,103,843. Electro-photographic apparatus. ADDRESSOGRAPH-MULTIGRAPH CORPORATION. June 3, 1965 [July 17, 1964], No. 23712/65. Heading H. A pile of photo-conductive sheets to be fed one by one into an electro-photographic copying machine is placed in a chamber having heating means for controlling the moisture content of the sheets. A receptacle 14 for the sheets is received on a recess 26 in the copying machine and an enclosing cover 20 is hinged to the rear edge 38 of the recess. Mounted in the cover is an electric heating element 22 having a humidity-responsive control-device 24 connected thereto. At a predetermined relative humidity the device 24 causes the heating element 22 to be switched on so as to reduce the humidity content of the sheets so that their electrical resistivity does not decrease to a point when faulty copying would occur. Friction rollers 32 are mounted in the recess 26 for feeding the sheets into the machine.
Patent GB-1183982-A (GB)
Title: Improvements in or relating to Environment Identification Systems
Inventor: FOSTER DAVID BLYTHE
IPC: G09B21/00
Filed: 1967-05-22
Abstract: 1,183,982. Amplitude modulators. NATIONAL RESEARCH DEVELOPMENT CORP. 22 May, 1968 [22 May, 1967], No. 23729/67. Heading H3R. [Also in Division G1] The amplitude of the output of an oscillator 1, 2, 3 is modulated in dependence upon the amount of light falling on a photo-electric cell 12 by feeding it to the base of a transistor 10 whose collector current is controlled by a metal oxide field effect transistor 11 having its gate connected to the junction of cell 12 and an adjustable resistor 13. The modulated signal is amplified by a transistor 21 and made audible by a small loud-speaker 23.
Patent GB-614882-A (GB)
Title: Belt-sanding machine
IPC: B24B21/00
Filed: 1946-08-10
Abstract: 614,882. Belt sanding machines. TRAFINA AKT.-GES. Aug. 10, 1946, No. 23749. Convention date, Sept. 8, 1945. [Class 60] [Also in Groups XXIV and XXVIII] In a belt sanding machine the end frames 1, 2, Fig. 1, are connected to each other by tubes 3, 4, which pass through bores in the frames and are clamped in adjusted position therein by stirrups 5, Fig. 4, the screw-threaded ends 6 of which carry nuts 7. The middle part of the stirrup may be a band or of circular cross-section. A projecting part of the tube 3 has ribs 10, Fig. 6a, on which run rollers 12 of a carriage 11 in which is pivotally mounted at 15 a carrier 14 for the axle 13 of the idler belt drum 8. The carrier 14 is swivelled by means of a screw 17, Fig. 5, engaging an arm 16. The carriage 11 is urged to the right by a spring 23 and rod 19. A carriage 26 has rollers 30 running on the upper arm of a guide rail extending between the frames; the carriage has a rod 28, Fig. 7, for a counterweight and a rod 29 carrying a grinding shoe 27 which is adjustably mounted on a ball 32, Fig. 9, on the rod. The drum 38 for driving the sanding belt, Figs. 10 and 11, is driven by a reversible motor 36 and an impeller 39 is also provided for exhausting dust, the suction casing 391 being built on to the fan casing 40. The sanding belt passes through openings 41 in the suction casing 39<SP>1</SP> which surrounds the belt drum 38, and in the lower opening oblique ribs 42 are provided to prevent the entry of the workpiece into the suction casing. The fan casing 40 has a partition wall 44 in its outlet branch 43. The work table 45 is vertically adjustable on guides 46 on the frames, and is also adjustable horizontally transversely to the run of the belt. An additional work table 48 for the upper run of the belt is carried by arms 49, carried by the tube 3.
Patent GB-406728-A (GB)
Title: Improvements in or relating to illumination apparatus
IPC: G09F13/34
Filed: 1932-08-25
Abstract: 406,728. Lamps for intermittent illumination. TOPLIS, L. G., 78, Marlborough Park Avenue, Sidcup, Kent. Aug. 25, 1932, Nos. 23767/32 and 1710/33. [Class 75 (iv).] Signs and other objects are illuminated by a plurality of beams of light directed from spaced but adjacent points so as to light up a common area from different angles at a speed of alternation sufficient to provide a scintillating or animated effect but not great enough to produce persistence of vision. The interruption of the beams is effected by a shutter which produces a totally dark period after each flash. Fig. 1 shows a disc D rotated by an eddycurrent or other motor d<3> and having an aperture D<1> which comes in turn over two orifices C, C<1> located over lamps A, A' and reflectors A<3>, A' in a casing B. Fig. 2 shows in cross-section a modified form having a single lamp A light from which passes through lenses F, F<1> to be reflected by mirrors E, E<1> through the orifices C, C<1>. The disc D may have the material which is removed to form the aperture D<1> attached near the aperture to serve as fan blades and to balance the disc. In a further form the disc D is omitted and the lens F' is replaced by a reflector which is rotated together with the lens F around the lamp A, or a rotating drum may be substituted for the disc D. Fig. 14 shows a further modification in which a shutter W having slots W<4>, W<5> on opposite sides, is rotated about a lamp A by a motor d<3>. A reflector A' behind the shutter returns light passing through the slot W<4> at the rear in nearly the same direction as that passing through the front slot W<5>. Mirrors may be disposed in the paths of the beams to facilitate use of the apparatus in confined spaces.
Patent GB-792052-A (GB)
Title: Magnetic record transducer
IPC: G11B5/127
Filed: 1954-08-16
Abstract: 792,052. Magnetic recording, reproducing, and erasing heads. RADIO CORPORATION OF AMERICA. Aug. 16, 1954 [Sept. 17, 1953], No. 23794/54. Class 40 (2). A magnetic recording, reproducing, or erasing transducer head for use with high, e.g. television frequency signals comprises a high permeability possibly laminated metal ribbon core 2 arranged as a closed loop having polar ends 12 which may be plated with a non- magnetic material 16 of negligible thickness and abutting against each other in a line of contact engageable with a tape (not shown), a signal coil or coils 4 inductively coupled to the core, and a housing 8 substantially surrounding the core and clamping the polar ends. The line contact is produced by the clamping effect of the two-part housing on the mutually facing sides at the ends 12 of the core which ends extend parallel to each other at 14 and by the dressing down of the housing and ends until the latter just begin to deviate from parallelism. The plating 16 is a high electrical conductivity material such as copper or silver and the cavity defined by the housing is filled with a thermosetting resin plastic material 17. Suitable materials and dimensions for the head are described in the Specification. Specification 661,428 is referred to.
Patent GB-614886-A (GB)
Title: Improvements in and relating to adjustable spanners
IPC: B25F1/00
Filed: 1946-08-12
Abstract: 614,886. Combined spanners and screwdrivers. RUNBAKEN, J. H. Aug. 12, 1946, No. 23812. [Class 61 (iii)] A spanner of the chuck-like type in which the jaws b are resiliently mounted integral with a stem a sliding in a sleeve d and operated by a nut f engaging with the screwed end of the stem a, is provided on the nut f with a screwdriver h. A sleeve i surrounds the sleeve d and engages the nut f. A cap m is provided for the screwdriver h.
Patent GB-669945-A (GB)
Title: Improvements in or relating to marine propulsion power plant
Inventor: BAILEY RICHARD WILLIAM
IPC: F01K15/04
Filed: 1949-09-15
Abstract: 669,945. Motor power plant. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 14, 1950. [Sept. 15, 1949] No. 23855/49. Class 110(iii). [Also in Group XXXIII] A marine propulsion power plant comprises ahead and astern steam turbines fed from a steam generator, at least one gas turbine fed with the gases discharged from the steam generator and one or more reciprocating I.C. engines. The I.C. engines are used independently or in association with the turbines to provide propulsive power or are used to drive a compressor for supplying combustion air to the steam generator. As shown in Fig. 1, a compressor 10 supplies air to the steam generator 1 and is driven by a gas turbine 9 which is arranged in series with the propulsion gas turbine 12. Condensate from a conderser 7 is used to cool the reversible diesel engine 16 and is then heated in heaters 18, 19 by the exhaust gases of the gas turbine and diesel engine. In a modification, the compressor is driven by the diesel engine through a clutch and step-up gearing. In a further modification, the diesel engine drives an electric motor which is coupled to the propeller shaft through a clutch and is coupled to the compressor through a clutch and step-up gearing. In a two or more screw arrangement, see Fig. 4, the useful power gas turbine 12 and an additional steam turbine 40 drive an electric generator 41 which is connected to reversible electric motors 42, 43. The diesel engine 16 drives an electric generator 46 which drives the electric motors 42, 43 or separate electric motors. The electric motors are coupled directly or through reduction gearing to the shaft 6. The exhaust steam from the turbine 40, which may be reheated, is fed to intermediate and low pressure turbines 44, 45, respectively, which drive the shafts 6 through reduction gearing.
Patent GB-1317592-A (GB)
Title: Production of holograms
IPC: G03B7/083
Filed: 1970-05-18
Abstract: 1317592 Holography K BIEDERMANN 18 May 1970 [17 May 1969] 23864/70 Heading G2J [Also in Division G1] In holographic apparatus wherein a hologram is recorded by exposing a medium 13 a laser produces a beam which enters an interferometer which measures the mechanical stability of the apparatus and operates a shutter to interrupt exposure when the vibrations exceed a desired value. The interferometric measuring beam strikes a beam splitter 17 giving one portion which is reflected back on itself by a mirror 18. The other portion follows a path via a mirror 5, mirror 19 rigidly attached to a lens in the object beam path, mirror 10 in the reference beam path.and a mirror 20 from which it is reflected back along the path to beam splitters 17. There it interferes with the beam portion from mirror 18. This interfering beam is again split at 21 half passing to each of two non-linear photo-resistors 22, 23, in front of one of which 23 is a diffuser 24. These measure any change in the fringe pattern cammed by vibrations of the apparatus. The output from a measuring device 26 is connected to a shutter 14 or 14'. In one embodiment the photo-resistors 22, 23 are replaced by a single photo-electric transducer located behind an aperture in a screen. The interferometer is so adjusted that the fringe cycle is four times the aperture width. In a further embodiment use is made of the principle of a Mach Zender interferometer, Fig. 3. Part of the object beam is reflected from a mirror 33 located on the object holder, and this beam then strikes a beam divider 32, located in the bisector plane for the object and reference beam at hologram recording plate 13, where it interferes with a portion of the reference beam. The resultant fringes are measured by a transducer 30 located behind an apertured screen 28. Any resultant adverse signal operates shutters 36, 37. If desired a transparency, having the same fringe density and orientation as the interference fringes, may be located in front of aperture 29. The apparatus may be a holographic camera.
Patent GB-241700-A (GB)
Title: Improvements in or relating to thimbles
IPC: D05B91/04
Filed: 1924-10-09
Abstract: 241,700. Feer, M. Oct. 9, 1924. Thimbles. - A thimble is formed with a thread. cutting device thereon consisting of a disc or ring having a sharp edge over which extend a series of spaced lugs. The cutting edge A may be formed on the flanged body of the thimble C and the top D secured thereto by the protecting lugs B. In a modification, Fig. 4, a separate cutting disc A is secured to the thimble body by lugs formed on the top D.