baber/WOPTO huggingface dataset:
Patent GB-156147-A (GB)
Abstract: 156,147. Traun's Forschungslaboratorium Ges., H. O. Sept. 6, 1918, [Convention date]. Acetaldehyde and acetic acid, obtaining; electrodes.-Acetaldehyde or acetic acid is prepared by forcing acetylene through a conductive porous anode, such as is described in Specification 155,835, the pores of which are filled with an insoluble mercury compound. The electrolytic bath being acidic, the mercury compound is continuously regenerated by anodic oxidation. The bath is maintained at such a temperature that the product is continuously distilled off, and the pressure may be reduced to facilitate the distillation. If the potential difference between the electrodes be maintained at about 1.5-2 volts, simple hvdration of the acetylene to acetaldehyde takes place; whereas with a potential difference of about 3-3.5 volts acetic acid is obtained. A suitable electrolyte is phosphoric acid, and the anode may be made of iron, steel, nickel, nickle steel, ferrosilicon, iron-nickel or non-aluminium alloys, or copper coated with platinum or gold. The mercury compound, e.g. mercurous oxide or mercury phosphate, may be employed as such, or mixed with oxides, peroxides, or porous fibrous substances such as asbestos, paper, thread, wool, or cellulose ester powder, with or without binding agents. In the apparatus shown, horizontal strips of wire netting, or perforated or corrugated sheets, to which the mercury compound has been applied in the form of a paste, are secured between caps 21, 22 by bolts and nuts passing through the netting &c. Slots in the netting &c. form passages 29 for acetylene supplied by a tube attached to the upper cap 22. The caps are covered with ebonite &c. Good electric contact is secured by applying hard solder at the ends of the strips. The cell is closed and is heated by a steam jacket 34.
Patent GB-1184814-A (GB)
Title: Quantum Photocoagulator
Inventor: TVERSKOI JURY LVOVICH
IPC: A61F9/008
Filed: 1967-04-05
Abstract: 1,184,814. Laser ophthalmoscopes. GOSUDARSTVENNY NAUCHNO-ISSLEDOVATELSKY. INSTITUT GLAZNYKH BOLEZNEI IMENI GELMGOLTSA. April 5, 1967, No.15641/67. Heading G2J. A beam 3 from a laser 2 is directed to a patient's eye by a reflecting coating 9 on a piano-parallel plate 8 placed at an angle to the line of sight of an ophthalmoscope 10-14, the coating 9 being in the form of a mark which is visible in the eyepiece 14 of the ophthalmoscope. The laser beam is focused on the mark 9 by a lens 7 and reflecting prism 6, members 6, 7, 8, being mounted on a support 15 which is slidable along the axis of the ophthalmoscope by means of a worm gear drive 17. For an emmetropic eye mark 9 is at the focus of the lens 10 whereas for myopic or hypermetopic eyes the mark 9 is further from or nearer to the lens 10 so that the image of the retina produced by lens 10 is in the place of mark 9. The apparatus is pivotable about orthogonal axes by screws (22, 25 Fig. 2, not shown) bearing on flanges on the pivotal shafts.
Patent GB-168980-A (GB)
Title: Improvements in taps or valves
IPC: F16K21/04
Filed: 1920-06-10
Abstract: 168,980. Christiansen, E. June 10, 1920. Actuating - mechanism; leakage, stopping and discharging.-A tap or valve is operated by a screwed spindle against the fluid pressure, the pitch of the screw being such that the valve must be held open, but closes automatically when released. A diaphragm to prevent leakage is interposed between the operating spindle and the valve stem, but is not secured to either. The valve seating 2 has an annular rib 9 which engages with a flexible washer 8 carried by the valve 6. The valve stem 10 is rounded at the top and bears against a disc 12 carried by a rubber or metal diaphragm 11. The valve is opened against the fluid pressure by the rotation of a spindle 17 having a screw 18 with a pitch sufficiently large to enable it to return to the closed position when released. A small passage 26 is provided for returning any liquid leaking past the member 25. The closing of the valve may be assisted by a spring 21 bearing against the collar 22.
Patent GB-425859-A (GB)
Title: Improvements in machines for applying two or more coatings to endless webs of paper or films
IPC: B29C70/68
Filed: 1934-05-25
Abstract: 425,859. Coating webs. BARTSCH, W., 15, Rosenstrasse, and RADEBEULER MASCHINENFABRIK A. KOEBIG GES., 117, Leipziger Strasse, both in Radebeul, near Dresden, Germany. May 25, 1934, No. 15683. [Class 140] In a machine for applying two or more coatings to endless webs of paper or film in which the coating devices are disposed alongside one another and the web is guided for solidifying or drying the coating in such a manner as tu avoid contact of the freshly applied coating with parts of the machine, the web is guided vertically upwards away from the coating devices in order uniformly to distribute the coating. A web B, Fig. 1, runs over a roll 1 to a coating device comprising a roll 3 rotating in a trough 4 and a co-operating roller 2, and is led vertically upwards, over a roll 5 to a pair of oblique guide rods 6, 7 whence it receives a second coating by the device 8, 9, 10 and is again led vertically upwards over a roll 11. In coating films, direct contact of the film with the guide rods is avoided by using a driven endless band which travels on the cross-over path with the web. In an alternative method, the cross-over of the web B, Fig. 3, is effected by guide rolls 16, 17, 18 of which the roll 16 is in the first plane and the flanged roll 17 and the roll 18 are in the second plane, the web between the planes forming a free loop B<1>. If it is desired to apply successive coatings to opposite sides of the web, the apparatus shown in Fig. 1 is modified by arranging the second guide rod 7 so that it is directed from the right downwards towards the left. The web, after leaving this second guide rod, is led upwards and then downwards over a guide roll to the second coating device.
Patent GB-435497-A (GB)
Title: Transmission and change-speed mechanism
IPC: F16H3/12
Filed: 1934-05-26
Abstract: 435,497. Variable-speed gearing. RILEY, P., Castle Works, Aldbourne Road, Coventry. May 26, 1934, No. 15738. [Class 80 (ii)] Relates to gearing having coaxial driving and driven shafts, a layshaft parallel thereto and three constantly-meshed gear pairs of which some of the gears are free, two double-acting clutching systems being provided to give four forward speeds, a clutch of each system being engaged for each speed, one of the systems being arranged beyond the end of the layshaft. According to the invention, the other clutching system is arranged between two of the constantly meshed gears and comprises two dog clutches. Driven, intermediate and driving shafts 12, 14, 16 are coaxial and spigotally connected, a short parallel layshaft being provided at 17. The layshaft has two fast gears 18, 19 and a free gear 20, permanently in mesh with a gear 21 fast on the driving shaft. The gear 18 is permanently in mesh with a gear 22 fast on the intermediate shaft 14 and can be locked to the free gear 20 by a dog clutch sleeve 23. The gear 22 can be clutched to the driving shaft by a dog clutch sleeve 24. The other fast gear 19 on the layshaft is permanently in mesh with a gear 25 free on the intermediate shaft. This gear is formed with a sleeve 26 carrying fast thereon the hub 27 of a clutch member 28 which carries dog clutch teeth 29. A similar clutch member 30 is fast on the intermediate shaft 14. Surrounding these two clutch members is a double-acting clutch member splined at 32 to the driven shaft. This member comprises a sleeve 33 with striking collars 34, grooves 35 to coact with balls 36 to locate the member and flanges 37, 38 bolted together with the interposition of a plain ring 39. In these flanged portions are sets of dog teeth 40, 41 adapted to engage the teeth 29, 31. The outer or female clutch members 42, 43 are formed as rings having lugs 44 lying in slots in the flanges 37, 38. Through each of these lugs passes a bolt 46 having a shoulder 47 engaging a lug of the member 42, a compression spring 48 being interposed between the lug of the'other member 43 and the head 49 of the bolt, the head sliding in a part 50. First speed is by way of 21, 20, 18, 19, 25, 28, 29, 40 and 12, the intermediate shaft 14 rotating idly. For second speed clutch 24 is used and the drive is by way of 21, 24, 22, 18 and then as for first speed. For third speed and direct drive, the dog teeth 31, 41 are engaged, the drives being respectively through dog clutches 23 and 24. The sleeve 33 is preferably connected with the main clutch and the members 42, 43 are applied by the ring 39 under the pressure of the springs 48. In a modified form of clutch, the synchronizing friction members are arranged outside the dog tooth members 40, 41. In each gearchanging operation, the clutch sleeves 23, 24 are engaged, whilst the associated members are isolated from the drive. Specifications 423,454 and 423,455 are referred to.
Patent GB-312182-A (GB)
Title: Improvements in and relating to the treatment of flour, meal, milling products and the like
IPC: A21D2/24
Filed: 1929-05-21
Abstract: 312,182. Naamlooze Vennootschap Internationale Oxygenium Maatschappij Novadel. May 19, 1928, [Convention date]. Bleached products; treating with air and gases. -Grain, flour, meal, and milling products are treated with mono- or dichloramine or a mixture of these substances. Air is passed through a mixture of sodium hypochlorite and ammonia in solution, thus becoming charged with monochloramine, and is brought into intimate contact with the substance to be treated. Hypochlorous acid may be used instead of sodium hypochlorite. In addition the material may be treated with nitrogen trichloride or with per-compounds.
Patent GB-395495-A (GB)
Title: A new or improved method of storing, under pressure, tennis or other inflated balls
IPC: B65D81/20
Filed: 1932-06-04
Abstract: 395,495. Packing tennis balls in cans &c. DUNLOP RUBBER CO., Ltd., 32, Osnaburgh Street, London, and WILLSHAW, H., Fort Dunlop, Birmingham. June 4, 1932, No. 15780. [Classes 66 and 94 (i).] Tennis or similar balls are stored under fluid pressure in a metal container 1 which has one end 3 of thinner metal than the remainder, so that it bulges or moves outwardly as the internal pressure is increased and affords a rough measure of the pressure. Preferably the end is normally slightly concave, as in Fig. 2, and when the requisite pressure is attained becomes convex, as in Fig. 3. The inflation orifice may be at the other end of the container and may be sealed with solder. A lid covering the end 3 is provided with a cutter of a known kind.
Patent GB-497009-A (GB)
Title: Improvements in releasable attachments for articles to be dropped from aircraft
IPC: B64D1/04
Filed: 1937-06-08
Abstract: 497,009. Dropping articles from aircraft. VICKERS (AVIATION), Ltd., PIERSON, R. K., and FIRVIAN; R. A. June 8, 1937, No. 15839. [Class 9 (ii)] Relates to releasable attachments for articles such as mail bags and bombs, to be dropped from aircraft of the kind in which the article is re leasably carried by a slip connected to a cable and adapted to be hoisted into place, together with it suspended article, by a winch. According to the invention, in a releasable attachment of this kind the housing for the slip i provided with one or more spring-loaded jaws adapted to be moved aside or forced open automatically when the slip is hoisted into the housing, said slip having one or more openings or recesses to receive said jaw or jaws when the slip is drawn into the housing and thereby allow the jaw or jaws to engage with and retain the slip, a jaw disengaging device being slidably mounted on said housing to permit the jaw or jaws to be disengaged when the slip is to be lowered. As shown, the housing a is formed with a slot a<1> in which are mounted two spring jaws b, b<1> having bosses b<3>, b<4> turnably mounted on a sleeve c carried by a hollow pivot pin c<1> mounted in a barrel part a<2> of the housing. The jaws, which are arranged to extend through the slot a<1> inwardly of the side plates a<3>, a<4> of the housing, are each formed with an inclined lower face b<5> and an upper abutment b<6>, a C- spring b<7> being provided to hold the jaws elastically in their inwardly projecting position. The slip formed with two side plates d<1>, d<2> having slots d<3>, d<4> therein shaped to receive the jaws b, b<1>, is adapted to be hoisted into the housing by means of a cable f attached at one end to the housing and having its other end attached to a winch. With this arrangement, when the slip with its attached load is hoisted by the cable f into the housing, the jaws b, b<1> are forced opened by the slip and, when the latter reaches the limit of the hoisting movement, the jaws close through the action of the spring b<7> and engage in the slots d<3>, d<4>. The jaws are moved apart to disengage the slip by the operation of a cable e<3> attached to a slide e<1> mounted in the barrel part a<2> and carrying a wedge e adapted to engage between the jaws b, b<1>. The slide e<1> and wedge c are returned by a spring e<2> in the barrel portion a<2>.
Patent GB-375511-A (GB)
Title: Improvements in or relating to fluid pressure operated blowers for cleaning the tubes of steam generators and the like
IPC: F28G3/16
Filed: 1931-05-30
Abstract: 375,511. Boiler cleaners. MOSES, R. I., Iona House, Station Road. Langley, Buckinghamshire, and IVOR POWER SPECIALTY CO., Ltd., 418, Strand, London. May 30, 1931, No. 15892. [Class 99 (ii).] A boiler cleaner comprises a blower tube 3 mounted between a fixed cleaning-fluid conduit I and a sleeved member 22 bolted to the usual wall box 14. The outer end of the tube 3 is provided with a packing ring 7 which is compressed on to the pipe 1 by a gland 6, and the other end is-fitted with a nozzle 11 having an orifice or orifices 12 of greater cross-sectional area than the pipe 1 so as to create an inductive. effect and prevent any leakage of cleaning fluid through the packing 7. -The sleeve 20 of the member 22 is provided with internal bearing pins 36 for the blower tube, and the outer end 35 of the pipe 1 is flared to form a bearing surface. Longitudinal and rotational movements of the blower tube are facilitated by a hand-wheel 4 fitted on the end thereof ; these movements are limited respectively by a stop 31 on a bracket 24, which is mounted on the member-22 and supports the conduit 1, and stops 30 on the hand-wheel itself. Cooling fluid may be admitted to the space between the blower tube and wall-box through a tapped hole 34 in the member 22.
Patent GB-379392-A (GB)
Title: Improvements in or relating to fine edged blades and method of making the same
IPC: B26B21/58
Filed: 1931-06-01
Abstract: 379,392. Nitrogenizing ferrous alloys. FROST, T. H., 116, Riverway, Boston, U.S.A. June 1, 1931, No. 15979. Addition to 378,543. [Classes 72 and 82 (i).] A safety razor, or other fine-edged blade is nitrogenized only along its cutting edges, either by electroplating its entire surface with tin, copper, silver, nickel, or chromium and then roughgrinding the cutting edges so that they alone are exposed to the action of the ammonia ; or by clamping a stack of rough-ground blades 10 between clamps 20, 22 which expose only their cutting edges, or by using both these methods together, the clamps preventing distortion of the blade. Spacing shims may be used in the stack of blades. After nitrogenization, safetyrazor blades are given a final grinding but for other blades this may not be necessary. The blades are plated and rough ground in the form of a ribbon and may also be nitrogenized in this form or as individual blanks. To yield a rough edge when finished the blade is nitrogenized for two hours at 950‹ F. Nitrogenization for twenty minutes at 1150‹ F. yields softer edges which are smoother when finished. Intermediate temperatures and times may be used. Any distortion which may result will be absorbed in the soft areas at the ends of the slot. The preferred alloy used is " Nitralloy " or a ferrous alloy containing a substantial amount of aluminium combined with chromium, tungsten, or molybdenum. The percentage proportions of two preferred alloys are stated. The blade, which is of the kind having a medial slot 12 and corner recesses, is rustproof and when silver-plated may be polished.
Patent GB-742087-A (GB)
Title: Foam forming and projecting nozzle
IPC: A62C5/00
Filed: 1953-06-10
Abstract: 742,087. Making foam. TECALEMIT, Ltd. June 10, 1953 [July 17, 1952], No. 16013/53. Class 47 [Also in Group XXVIII] A foam forming and projecting nozzle comprises a venturi device including an annular chamber 7 which is arranged between the convergent and divergent portions 5, 6 and is closed to the atmosphere, and a tube 1 provided with air inlets 8 adjacent the venturi.. The tube 1 tapers as far as the plane L - L and is then of uniform cross-section including a cranked portion 3 which has a central partition 4. In a modification, holes are formed. in the convergent position 5 communicating with the chamber 7. In a further modification, Fig. 3, the chamber 7 is formed between two convergent portions 5, 6 and an inlet 14 for additional material is provided in the space 13 between the convergent portion 6 and the divergent portion 12 which is flared at its inlet end 11.
Patent GB-1091213-A (GB)
Title: Purification of synthetic alcohols
IPC: C07C29/74
Filed: 1965-04-14
Abstract: In the purification of crude alcohols prepared by the catalytic carbonylation of olefines with hydrogen and carbon monoxide, followed by catalytic hydrogenation, the crude is contacted with an aqueous solution of an alkali metal hydroxide at elevated temperature to obtain aqueous phase comprising the alkali metal salts of the impurities and a purified alcohol phase at least a portion of which is recycled to the caustic contact zone and a portion is injected into the crude alcohol stream prior to the caustic treatment. Primary C4 to C16 alcohols containing 2-ethyl-4-methyl pentanol-1, 2-ethyl hexanol, and 2-ethyl isohexanol may be treated and a preferred sodium hydroxide solution is of 5-15 weight per cent concentration.  An example describes the use of two or more packed towers for the caustic scrubbing treatment.
Patent GB-657314-A (GB)
Title: Echo ranging apparatus
IPC: G01S1/72
Filed: 1948-06-15
Abstract: 657,314. Echo sounders. BENDIX AVIATION CORPORATION. June 15, 1948, No. 16133. Convention date, July 2, 1947. [Class 118 (ii)] In an echo-sounder, particularly for submarine use, comprising a common transducer for transmission and reception which is periodically shock-excited to cause it to emit mechanical waves, and a series-resonant circuit to which the transmitted and received signals are applied and from across one element of which the signals are passed to an amplifier and recorder, means are provided for damping the resonant circuit when the transmitted pulses are applied thereto, whereby the " ringing " time of the circuit is reduced and echoes from nearby objects may be distinguished from the transmitted signals. The transducer 10 is coupled via autotransformer 11 and transmission line 18 to the series resonant circuit comprising the inductance 15 and condenser 17 which is connected to the amplifying circuit 19. Shock-excitation of the transducer is obtained by means of condenser 61 and gasfilled valve 57 which is normally non-conducting. Cam 51a is continuously rotated to periodically open and close contacts 53. When the contacts close the grid of the valve 57 gives rapidly negative and then returns to earth potential. When the contacts open again the grid is driven positive and the gas-filled valve fires discharging condenser 61 through the transducer circuit. The resonant circuit 15, 17 is also shock-excited and oscillations produced across the condenser 17 are applied to the amplifier 19 and thence to an arrangement providing a continuous record. A neon lamp 20 is effectively connected in parallel with condenser 17 by virtue of its being connected in series with condenser 70 and 32. The lower electrode (as shown) is kept at a positive potential so that when the upper electrode goes negative the lamp 20 fires damping the resonant circuit. Thus the circuit is damped when the grid of the first valve of amplifier 19 goes negative and it is similarly damped when the grid goes positive, due to the flow of grid current. In this way the " ringing " time of the circuit is reduced and the line produced on the record corresponding to the transmitted pulse is shortened enabling echoes from nearby objects to be more easily distinguished. Recorder. The output from the amplifier 19 is applied to a rotating arm 46 at the tip of which is a stylus which produces a mark on the record strip 34 upon the application of a signal thereto. The ship 34 is unwound at a constant rate from a roll 35 and taken up on a roll 36 which is driven by a shaft 37 which is connected by gearing to a motor 49. The arm 46 is also rotated through gearing by the motor 49 in synchronism with the rotation of the cam 51a. Specification 608,513 is referred to.
Patent GB-448965-A (GB)
Title: Apparatus for use in viewing projected stereoscopic pictures
IPC: G02B27/22
Filed: 1935-06-04
Abstract: 448,965. Stereoscopic kinematography &c. WLK, H., 20, Rosseggergasse, Mahr, Schonberg, Czecho Slovakia. June 4, 1935, No. 16149. Convention date, June 1, 1934. [Class 97 (i)] Apparatus for use in viewing projected stereoscopic pairs of images comprises a spectacle frame carrying fixed and adjustable mirrors 1, 2 respectively, in front of one eye, for viewing one image, and a shield 4, covering that image, in front of the other eye ; the mirrors are of such dimensions that, by slight inclination of the head, the wearer may view, with one eye, the upper part of one image directly and the lower part of the other image by reflection, and may thus check the mirror adjustment. As shown, the mirror 2 is angularly movable by a screw 3 to correct its adjustment, if necessary.
Patent GB-1095916-A (GB)
Title: Continuous photochemical reactions
Inventor: PAPE MARTIN
IPC: B01J19/12
Filed: 1965-04-15
Abstract: In a continuous process for the photonitrosation of cycloalkanes, a concentration gradient in respect of the photo-sensitive substance is produced in the solution to be irradiated, the concentration gradient being such that the concentration of the photosensitive substance in the reaction medium adjacent to the light transmitting surface is at most half the concentration in the rest of the reaction medium.  The cycloalkanes may have 5 to 12 carbon atoms, and may be reacted in the temperature range - 30 DEG  to + 30 DEG  C. with for example nitrosyl chloride in amount to give from 0.3% to 0.5% by weight in the reaction mixture of nitrous oxide and chlorine under the influence of light having a wave-length of 360 to 600 millimicrons, advantageously in the presence of hydrogen chloride. If a solvent is needed it may be benzene, chloroform, ethylene chloride or glacial acetic acid. The example relates to the nitrosation of cyclohexane, in which a solution of nitrosyl chloride in cyclohexane saturated with hydrogen chloride is exposed at 18 DEG  to 20 DEG  C. to a mercury vapour lamp to give cyclohexanone oxime hydrochloride.