baber/WOPTO huggingface dataset:
Patent GB-919754-A (GB)
Title: Apparatus for elevating and slacking sheet-like articles
Inventor: DALEN CHRISTIAAN JOHANNES VAN
IPC: B07C1/02
Filed: 1961-06-22
Abstract: 919,754. Sheet-delivery apparatus. DE STAAT DER NEDERLANDEN, TEN DEZE VERTEGENWOORDIGD DOOR DE DIRECTEUR-GENERAAL DER POSTERIJEN, TELEGRAFIE EN TELEFONIE. June 22, 1961 [June 28, 1960], No. 22623/61. Class 100 (1). [Also in Group XXX] In apparatus for forming a pile of sheets, the sheets are delivered sequentially at a level below the pile, and are gripped and conveyed by a system of conveyer belts first in a horizontal direction, then vertically to a height determined by the rising height of the pile. The apparatus is one of several used in a machine for sorting forms or flexible cards according to group characteristics (see Group XXX). As shown, the individual sheets are fed at 24 between a horizontal driven belt 3 and the horizontal stretch of a belt 2, and are fed vertically between the vertical stretch of the belt 2 and two opposed vertical belts 4, 5; they are then delivered horizontally, assisted by an inclined guide-plate 15, on to a sliding plate 28, and piled on that plate, by a driven horizontal belt 16, against a gauge 22. The belt 4 is supported on pulleys on shafts 8, 9 which are fixed in the framework against vertical movement, but the belt 5 is mounted on pulleys on shafts 6, 7 which can slide vertically in slots 25, 26 in the framework, together with a horizontal arm 14 which carries the stacking belt 16. As each sheet is delivered on to the pile on the plate 28, the whole assembly comprising the belt 5, arm 14, guide 15, and belt 16 rises vertically to ensure that each sheet is delivered on the top of the pile; the highest position of the assembly is indicated by references 74-78. When the pile is complete, it may be removed; or the sheets may be removed sequentially from the bottom of the pile by a conveyer belt 27, and a reversely-rotating roller 21 which acts in the manner described in Specification 914,292.
Patent GB-1152077-A (GB)
Title: Improvements in or relating to Lasers
Inventor: SMITH PETER WILLIAM
IPC: H01S3/08
Filed: 1967-05-16
Abstract: 1,152,077. Lasers. WESTERN ELECTRIC CO. Inc. 16 May, 1967 [27 May, 1966], No. 22653/67. Addition to 1,083,534. Heading H1C. A laser which produces a stabilized single mode output comprises an active medium 10 located between reflectors 11, 12 of a first resonator tuned to a range of frequencies including the desired output frequency, and a second resonator tuned to the output frequency which is formed by reflector 12 in association with a beam splitter 13 and a further reflector 14, the power output of the laser being monitored by a photo-tube 26 the output of which is applied with a reference voltage 27 to a D.C. difference amplifier 25, the resulting error signal being passed through a low pass filter 24 to a piezoelectric member 23 which controls the axial position of reflector 11. The more sharply defined resonance characteristic of the second resonator introduces a loss which is a minimum at the required output frequency, and so enables a single mode output to be generated which is passed to an external utilization device 24 by the beam splitter. Any frequency drift due to deviation of either resonator characteristic from the other and caused, e.g. by thermal conditions, causes a reduction in monitored power through partially-transmitting reflector 11 which is corrected by adjustment of the first resonator length by the error signal. Output frequency adjustment is effected by a tuning voltage 22 applied to a piezo-electric member 21 controlling the axial position of reflector 11. As shown a helium-neon gas tube 16 with Brewster windows 17, 18 is used as the active medium, excitation being effected by R.F. applied to external electrodes 20 or by D.C. Alternatively two helium-neon gas tubes in tandem may be provided, the space between the tubes being filled with methane gas to reduce oscillation at 3À39 Á. Spaced magnets may also be placed along the length of the tubes for this purpose.
Patent GB-583680-A (GB)
Title: Improvements in or relating to concrete mixers
IPC: B28C5/20
Filed: 1944-11-16
Abstract: 583,680. Mixing-machines. RANSOMES & RAPIER, Ltd., BRETT, C. E., and PRESTON, F. W. Nov. 16, 1944, No. 22673. [Class 86] A concrete mixer comprises a set of shovel blades and a set of U-shaped blades mounted circumferentially at opposite ends of the inner surface of a rotary mixing drum. Each shovel blade is constituted by a flat plate H which has an upturned edge H1 and is wider at its outer end than its inner end. The mix is shovelled by blades H to the U-shaped blades, each of which comprises a flat central part J lying in a plane which passes above the axis of the drum when the blade is in its uppermost position and is inclined at a small angle at the circumference of the drum to a radial plan containing the drum axis. The upturned end J<SP>1</SP> lies substantially in a plane normal to the drum axis whilst the side J<SP>2</SP> is inclined as shown. In order to assist in the mixing the discharge chute G is tilted downwards into the drum and material is thrown from the U-shaped blades against the lower end thereof.
Patent GB-834250-A (GB)
Title: Manufacture of aromatic disulphonic acids
Inventor: GOODMAN ISAAC
IPC: C07C309/32
Filed: 1956-07-23
Abstract: Benzene - 1,4 -, naphthalene - 2,6 - and diphenyl-4,41-disulphonic acids are prepared in the form of their alkali metal salts by heating an alkali-metal salt of a benzene, naphthalene or diphenyl mono-sulphonic acid at 250 DEG  C. or above.  The invention also includes terephthalic acid, terephthalonitrile and high molecular weight polysulphonamides when prepared from these aromatic disulphonic acids obtained as above.  The heating may take place at normal or superatmospheric pressures, preferably in an atmosphere of carbon dioxide or argon. The reaction will take place above 250 DEG C. but in the absence of a heavy metal catalyst a temperature of 425 DEG  C. is generally needed, an upper limit of 600 DEG  C. is mentioned.  Catalysts containing chromium, mercury, vanadium and silver may be used. The potassium or preferably the sodium salt is used and the free acid may be obtained from the crude disulphonate by contacting with a cation-exchange resin.  In examples: (1)-(8) and (14) sodium and (9) potassium benzene sulphonate is heated under various conditions to give the 1:4-disulphonate; (10) potassium and (11) sodium naphthalene-b -sulphonate is heated with cadmium dust to give the 2 : 6-disulphonate, (12) sodium naphthalene-a -sulphonate is heated to give the 2:6-disulphonate; (13) sodium diphenyl-4-sulphonate is heated to give a diphenyl-4:41-disulphonate.
Patent GB-1129575-A (GB)
Title: Heterocyclic thiocyanates
IPC: C07D277/74
Filed: 1967-05-16
Abstract: 1,129,575. Heterocyclic thiocyanates. BUCKMAN LABORATORIES Inc. 16 May, 1967 [25 May, 1966], No. 22769/67. Heading C2C. [Also in Division A5] Novel thiocyanates of formula in which X is -O-, -S- or -NH-; R is H, halo, alkyl, nitro, amino or hydroxy and n is 1 or 2 are prepared by reacting a metal salt of a corresponding heterocyclic mercaptan with chloromethyl thiocyanate in an alcoholic solution. An intermediate isolated is sodium 2-mercaptobenzthiazole from the 2-mercaptobenzthiazole and sodium ethoxide.
Patent GB-729335-A (GB)
Title: Improvements in or relating to portable power megaphones
IPC: H04R27/04
Filed: 1952-09-11
Abstract: 729,335. Public address systems. POTTS, F. C. (Austin-Lee, Inc.). Sept. 11, 1953 [Sept. 11, 1952], No. 22786/52. Class 40 (4). [Also in Group XXXVIII] In a portable electric megaphone, a microphone 19, batteries 16<1> and loud-speaker 11 are connected in series and contained in a casing 15, the batteries 16<1> being positioned between the loud-speaker 11 and the casing 15. The batteries are held against a cylinder 36 by a looped strip 16. The loud-speaker 11 has a hollow threaded boss 27 on which is mounted a re-entrant horn 39 (see Group XXXVIII). The microphone 19 is mounted on a removable cover 18 to which is secured a mouthpiece 66. An apertured plate 21 is rotatable to seal the microphone when the megaphone is not in use. A sound-producing device such as a siren or whistle may be built in to the mouthpiece wall. The control switch 23 is incorporated in the handle 22.
Patent GB-693578-A (GB)
Title: Improvements in electrical facsimile apparatus, more particularly for tape recording
IPC: B41L45/00
Filed: 1950-09-18
Abstract: 693,578. Facsimile telegraphy. EASTMAN KODAK CO. Sept. 18, 1950 [Sept. 17, 1949], No. 22829/50. Class 40 (iii). In a facsimile system separate portions of a subject to be transmitted are scanned at different times at separated scanning positions. In the arrangement described for reproducing on a tape the addresses on business cards, the latter are fed in succession from a pile or stack to a conveyer belt, Fig. 3 (not shown). As the address occupies solely one half the length of the card, the cards are placed in overlapped relation on the conveyer belt which feeds them to the scanning device, as described in Specifications 693,576 and 693,577. A rotating scanning drum 10 is formed with two sets of helically cut slots 15, 16 and at the first scanning position an objective 19 and mirror 20 project a transverse area of the card on to an apertured member 17 so that the first and third lines of the address are in register with respective sets of slots 15, 16. At the second scanning position, an objective 21 and mirror 22 are arranged to produce an image of an area of the card with the second and fourth lines of the address in register with the two sets of slots 15, 16. An apertured member 18 is provided at the second scanning position. Photo-cells 25, 26 and 27, 28 co-operate with the sets of slots 15, 16 at the first and second scanning positions. The outputs of the cells are fed simultaneously through amplifiers, such as 29, to four electromagnetic units 30, 32, 33, 34 operating printer bars 31, 35, 36, 37 associated with separate helical ridges on a rotating cylinder 11. A recording tape and a strip of carbon paper are fed between the printer bars and the cylinder 11, the loop of recording tape between the two printing positions being adjusted to correspond to the spacing between the two scanning positions. Specification 690,164 also is referred to.
Patent GB-839976-A (GB)
Title: Improvements in or relating to fluid filters
IPC: B01D25/00
Filed: 1955-08-08
Abstract: 839,976. Filters. COWELL, E. F. W., and OZONAIR ENGINEERING CO. Ltd. Aug. 8, 1956 [Aug. 8, 1955], No. 22838/55. Class 46. [Also in Group XXVIII] A liquid-cleaning unit comprises a plurality of spaced generally parallel imperforate plates 10, Fig. 1, each having on one side projections 11 and depressions 14 which on the other side form depressions 12 projections 13; the plates being nested as shown in Fig. 2 resulting in dirt-laden liquid entering the unit in any direction being constrained to take a sinuous path. The projections and/or depressions may be conical, pyramidal or frustro-pyramidal and the plates may be of roughened metal or of compressed fibrous material. Specification 767,231 is referred to.
Patent GB-841314-A (GB)
Title: Improvements in or relating to inner wrappers for cigarette packets
IPC: C08F10/00
Filed: 1955-09-16
Abstract: 841,314. Packages. CHALMERS, J. W., JACKSON, D. R. P., and MOLINS MACHINE CO. Ltd. Sept. 13, 1956 [Sept. 16, 1955], No. 22907/59. Divided out of 841,313. Drawings to Specification. Class 94(1). The subject-matter relates to the wrapper and lifting strip described in Specification 841,313. The Provisional Specification also describes the web and strip feeding and securing means of Specification 841,313. Specification 434,956 also is referred to.
Patent GB-1446775-A (GB)
Title: Soil cultivating implements
IPC: A01B33/08
Filed: 1973-05-24
Abstract: 1446775 Soil cultivating implements C VAN DER LELY NV 24 May 1973 [24 May 1972] 22923/73 Heading A1B An implement comprising a plurality of movable soil-working members 3 has on each side a screen 33 rigidly attached to a U-shaped member formed of rods 28, 29, 30. The rod 28 can move axially and rotate in a bearing bush 27 fixed to the main frame of the implement and vertical movement of the screen 33 is limited by a pin 30A fitted in any one of a series of holes 29A. The screens 33 are normally parallel to the direction of travel but, to release any trapped stones etc, are free to rotate outwardly (about the axis of the bush 27) against the restoring force of a spring 31 an extension of which bears against the rod 30. Inward movement is limited by contact of the rod 30 with an arm 15. The arms 15 are pivoted to the main frame at 16 and carry in bearings 20 a supporting cage-type roller 21, the height of the roller being adjustable by the screw assembly 24. Reference has been directed by the comptroller to Specifications 1277679.
Patent GB-790980-A (GB)
Title: Improvements in or relating to leg rests
IPC: A47C16/02
Filed: 1956-07-25
Abstract: 790,980. Leg rests. GOHMANN, H. July 25, 1956 [Aug. 3, 1955], No. 22972/56. Class 52(2) A leg rest for use when sitting or lying down is in the form of a wedge of which the height h of the edge 3 above the ground is twice the width b of the base, the rest being constructed of tubing 1 to which is attached a leg support 5 pivoted to knuckle sleeves 2 or attached by a divided tubular member snapped on to the edge tube 3. Rubber sleeves 9 form bearing surfaces and the rest is used standing either on its base or on a flank.
Patent GB-651516-A (GB)
Title: Improvements in or relating to electron velocity modulation apparatus
IPC: H01J25/36
Filed: 1947-08-20
Abstract: 651,516. Velocity-modulated tubes. STANDARD TELEPHONES & CABLES, Ltd. Aug. 20, 1947, No. 23097. Convention date, Aug. 21, 1946. [Class 39 (i)] Velocity modulation apparatus comprises an input and output hollow wave guide 4, 5, each helically coiled in a plurality of turns and slotted to allow an annular beam of electrons to be projected therethrough, and a field-free drift tube 6 at a different D.C. potential from that of either wave-guide. Surge impedances Zo and Z<SP>1</SP>0 terminate the wave-guides. Specifications 564,890 and 603,715 are referred to. The Specification as open to inspection under Sect. 91 also comprises an amplifier which is a single helical wave-guide in association with an annular cathode and a ring anode. Another modification comprises an axiallymounted cathode and a wave-guide folded in fretwork form. Two such wave-guides 24, 26 are combined as in Fig. 8 (Cancelled), with a braking electrode 25, the electron stream passing through slotted parts in the waveguides. Focusing of the electron stream is by magnetic means. The gain of the tubes is calculated theoretically. This subject-matter does not appear in the Specification as accepted.
Patent GB-405998-A (GB)
Title: Improvements in or relating to pedal driving mechanism for cycles
IPC: B62M3/08
Filed: 1933-08-18
Abstract: 405,998. Pedal driving-mechanism. CHANDEZE, L., 4, Avenue du Marechal Foch, Marcq-en-Baroeul, Nord, France. Aug. 18, 1933, No. 23100. Convention date, Aug. 18, 1932. [Class 136 (ii).] In order to enable the upper foot-supporting part of a pedal to traverse a circle concentric with the crank axle 4, the axle 1 of each pedal 2 is mounted in a short arm 7 which is freely suspended from a spindle 8 mounted at the end of the crank 3. The arm 7 is mounted on the spindle 8 by means of a ball bearing 9.
Patent GB-1338272-A (GB)
Title: On-load tap-changers for transformers
IPC: H01H9/00
Filed: 1971-04-19
Abstract: 1338272 Transformer tap changing systems SMIT NIJMEGEN ELECTROTECHNISCHE FABRIEKEN NV 19 April 1971 [6 March 1970] 23103/71 Heading H2H [Also in Division H1] An on-load tap-changer for a regulating transformer having windings 1, 1<SP>1</SP>, 2, 21 comprises two tap selectors each having two alternately movable contacts 4a, 4b ; 4<SP>1</SP>a, 4<SP>1</SP>b and a diverter switch 6 provided with two sets of rotatable contacts 8a, 8b, 8c; 8<SP>1</SP>a, 8<SP>1</SP>b, 8<SP>1</SP>c and fixed contacts 9-12 arranged on a common circular path. Rotation of the contact sets including transition resistances 14b, 14c, 14<SP>1</SP>b, 14<SP>1</SP>c enables selective connection of the tappings 3a, 3b, 3<SP>1</SP>a, 3<SP>1</SP>b of the transformer regulating windings 2, 2<SP>1</SP> to a conductor 7 connected to a star point or a network line via a conductor 13. In a modification, the resistances are fixed and are connected to the fixed contacts 9-12 which are each divided into three segments. A three-phase system using twelve fixed contacts each divided into three segments and six sets of rotatable contacts is also described.
Patent GB-153149-A (GB)
Title: Improvements in and relating to gun sights
IPC: F41G1/393
Filed: 1919-09-19
Abstract: 153,149. Henderson, J. B. Sept. 19, 1919. Sights.-Relates to sights for use on guns, bomb-throwers &c. mounted on a moving platform, in which correction is made for inclination of the platform by rotating the sight about an axis parallel to the axis of the gun, and consists (1) in combining with the main sighting telescope an auxiliary sighting telescope which is laid upon the horizon or upon a distant object and has its axis at an angle to the axis of the main sight, and (2) in correcting for drift by elevating or depressing the line of collimation of the auxiliary sighting- telescope relatively to the central axis of the main sight. The sight support 8 is capable of being turned by worm-gearing 4, 7 about a shaft 3 mounted in a fork 2 on the gun trunnion 1, the axis of the shaft being always parallel to the axis of the gun. Co-axial with the support 8 is an extension rotatable in azimuth with respect to the support 8. and carrying a ring 12 in which the laying telescope 13 is trunnioned at 14, 15 so as to be capable of elevation by worm-gearing 17, 18. The ring 12 supports an auxiliary telescope 22 having its axis at right-angles to the axis of the main telescope 13, and capable of being layed on the horizon, by operating the hand-wheel 6, to cross-level the sight. To correct for drift, the line of collimation of the telescope 22 may be adjusted by elevating or depressing the horizontal cross-wire 24, which is mounted in the focal plane of the telescope in a ring 25 adjustable, by operating a turn-screw 28. The Provisional Specification also describes the use on land of a level in place of the auxiliary telescope.
Patent GB-731504-A (GB)
Title: A method of producing metal powder
IPC: B22F9/20
Filed: 1953-08-21
Abstract: Iron or other metal powder is produced by mixing into a mass with water a pulverulent compound of the metal and a dispersion medium containing one or more compounds of magnesium or of the alkaline earth metals, which dispersion medium is wholly or partly in oxide form or is wholly or partly converted to oxide form on heating; the mass is formed into mouldings which are then dried and exposed to the action of a reducing agent in a furnace; finally, the metal particles are exposed by decomposing the mouldings to convert the oxide(s) of the dispersion medium into hydroxide form.  The metal compounds may be in the form of oxides, ore concentrates or scale and are chosen to be 10-50 per cent smaller than the desired average grain size of the finished metal powder.  The dispersion medium may consist of oxides, hydroxides or carbonates, e.g. a mixture of calcium carbonate and calcium hydroxide.  The mass may consist of 30-80 parts of the metal compound and 20-70 parts of the dispersion medium, 5-12 parts of which latter are preferably in hydroxide form, water being added to comprise 6-20 per cent of the mass.  The mouldings may be obtained by rolling into pellets in a drum or by pressing into briquettes.  The reducing agent may be hydrogen, carbon monoxide or other gas, tar, mineral oil products or other liquid, or pulverised coke, pit-coal, charcoal, sawdust, peat or other solid. The furnace temperature is 450-1200 DEG  C., the mouldings being removed preferably at a temperature of 600-700 DEG  C., and immersed directly into water, sprayed with water, or treated with water vapour.  A coarse separation of the metal powder from the dispersion medium may be effected mechanically or magnetically, in wet or dry condition, and in one or more steps, the rest of the dispersion medium being washed off with water or dilute hydrochloric or other acid.  When treated with acid, the powder is then treated with sodium nitrite or other anti-corrosive and quickly dried.
Patent GB-226267-A (GB)
Title: Improvements relating to fire extinguishers
IPC: A62C13/00
Filed: 1923-09-17
Abstract: 226,267. Minimax, Ltd., and Gregory, G. A. Sept. 17, 1923. Extincteurs. - A fireextinguisher is provided within the casing with a gas vent on the discharge pipe c extending from the base to the discharge nozzle, this vent being closed, when the extinguisher is brought into use, by a valve operating under the action of gravity. As shown, the vent d is fitted with a ball valve a, and the valve casing b has a flap valve f which also allows of the extinguisher being inverted for charging without leakage through the vent.
Patent GB-301784-A (GB)
Title: Improvements in or relating to magnet cores
IPC: H01F1/26
Filed: 1927-09-05
Abstract: 301,784. Automatic Telephone Manufacturing Co., Ltd., and Roseby, P. N. Sept. 5, 1927. Electromagnets. - Magnet cores for loading- coils &c. are formed of powdered iron, or an iron alloy containing from 2 to 8 per cent of silicon, which is annealed in air-tight pots at about 660‹ C. and is then treated with synthetic resin varnish and air-dried while kept in a state of agitation. The synthetic resin preferably comprises a phenol-aldehyde condensation product. The resulting mass is then stoved at about 250‹ C. to polymerize the synthetic resin and render it insoluble in the solvent used. A second coating of the varnish is then applied, and the powder is air-dried and subjected to a pressure of from 20 to 40 tons per square inch in a mould heated to 120‹ C., producing a solid ring or body of other desired form and having a specific gravity of about 6.2. The pressed rings are baked at 150‹ C. to stabilize the resin and drive off volatile matter. Four to eight such rings are bound together with tape and are wound with two windings on opposite halves of the core followed by a further two windings on top of those previously wound. One inner winding is connected with the opposite outer winding, and the two coils so produced form the windings of the loading coil. The coil is then dried and embedded in resin. Before treatment, the powdered alloy may be passed through a magnetic separator to separate out the non-magnetic particles. According to the Provisional Specification, the first stoving takes place at from 100‹ to 200‹ C., and the compression at from 10 to 50 tons per square inch.
Patent GB-1347064-A (GB)
Title: Regeneration of carbonaceous adsorbents
IPC: C01B31/08
Filed: 1971-04-19
Abstract: 1347064 Sulphur; regeneration of a carbon adsorbent WESTVACO CORP 19 April 1971 [10 March 1970] 23466/71 Heading C1A Sulphuric acid adsorbed on carbon (e.g. a coal-based activated carbon) is removed by reaction below 350‹ F. with hydrogen sulphide, using more than 3 moles of H 2 S per mole of H 2 SO 4  and the elemental sulphur thus formed on the carbon adsorbent is then removed, and the latter regenerated, by contacting at 800- 1300‹ F. with a gas capable of reducing elemental sulphur, e.g. hydrogen, so that 3 out of every 4 moles of the adsorbed sulphur is converted to hydrogen sulphide and the remaining 25% is vaporized. Alternatively, the sulphur may be removed from the carbon adsorbent by steam stripping or by a combination of the reduction process and steam stripping. The example describes the saturation with H 2 SO 4  of an activated carbon by adsorption of SO 2  from a gas stream comprising, in addition, O 2 , H 2 O, CO 2  and N 2  and the subsequent regeneration of the adsorbent.