baber/WOPTO huggingface dataset:
Patent GB-960568-A (GB)
Title: Improvements in or relating to multi-stage liquid ring gas pumping units
IPC: F04C19/00
Filed: 1963-02-19
Abstract: 960,568. Liquid-ring pumps. SIEMEN & HINSCH m.b.H. Feb. 19, 1963 [Feb. 20, 1962; Feb. 13, 1963], No. 6716/63. Heading F1C. In a multi-stage liquid-ring pump unit with a horizontal or vertical shaft and a liquid separator, the pump is directly coupled to the separator and the first stage of the pump is at the end facing the driving motor. The two-stage liquid-ring pump shown is mounted within a liquid separator 4, the common cover plate 5 of the pump and separator containing the suction and delivery branches 9, 10. The first stage impeller 12 is at the end of the pump adjacent the driving motor 1, while the second stage impeller 15 is at the other end, the delivery chamber 16 being closed by a plate 27 so that the mixture of gas and liquid leaves the chamber through an opening 28 remote from the gas delivery branch 10 or the liquid outlet 23. A baffle 22 is provided at the liquid outlet 23, the latter being so placed that when the pump is not operating, the second stage is always filled if the shaft 6 is vertical and the pump is always filled up to the level of the shaft if the shaft is horizontal. Operating liquid is fed to the two stages through conduits 25, 26 and may come wholly from the separator 4 or wholly or partly from an external source through a conduit 24. A cooler may be provided at the bottom of the separator.
Patent GB-883509-A (GB)
Title: Process for synthesizing urea
IPC: C07C273/04
Filed: 1960-02-26
Abstract: In a process for the production of urea by reacting a feed stream including ammonia and carbon dioxide at a temperature between 160 DEG C. and 200 DEG C. and a pressure between 2,000 p.s.i.g. and 4.500 p.s.i.g., the effluent stream containing urea and ammonium carbamate is passed through a first ammonium carbamate thermal decomposition stage, in which a portion of the ammonium carbamate is decomposed at reduced pressure to give an off-gas containing ammonia and carbon dioxide, which is scrubbed with water, aqueous ammonia, aqueous urea or aqueous ammonium carbamate while in heat exchange relation with the residual effluent stream in a second ammonium carbamate thermal decomposition stage, in which the remaining ammonium carbamate is decomposed at reduced pressure to give an off-gas containing ammonia and carbon dioxide, which is then removed from the remaining urea effluent.  The solutions of absorbed off-gas may either be used for further scrubbing operations or may be recycled to a stage producing ammonia and carbon dioxide for the urea synthesis stage.
Patent GB-525860-A (GB)
Title: Process for the generation of acetylene
IPC: C10H21/16
Filed: 1939-03-02
Abstract: 525,860. Acetylene ; dry process. I. G. FARBENINDUSTRIE AKT.-GES. March 2, 1939, No. 6835. Convention date, March 5, 1938. [Class 2 (i)] Acetylene is produced in a dry-generator by gasifying the main portion of the carbide introduced into the generator by a deficiency of water so that the calcium hydroxide is obtained in the dry state, separating the residual carbide from the calcium hydroxide and then removing it from the generator. The residual carbide may be re-introduced into the same dry-generator with further carbide or may be gasified in a wet generator. The residual carbide may be separated from the calcium hydroxide by sieving or by causing a gas acting as a sifting current to pass through the mixture.
Patent GB-491388-A (GB)
Title: Improvements in or relating to apparatus for delivering articles, such as bottles, packages or the like, to boxes or other containers
IPC: B65B21/10
Filed: 1937-03-09
Abstract: 491,388. Endless-belt conveyers. CHERRY - BURRELL, Ltd., and CAVENDER, L. March 9, 1937, No. 6977. [Class 78 (i)] Apparatus for delivering articles to containers comprises one or more endless-belt conveyers 3, a pusher device 4 and one or more shoots 6 down which the articles pass to a container 20. The containers 20, which may be compartmented boxes, are placed by any means on an endless-belt conveyer 21, which may have abutments 21a against which the containers rest. The conveyer 21 is moved step-by-step by a ratchet-wheel 27 on its upper roller shaft 25, the ratchet being engaged by a spring- pressed pawl 28 mounted on an arm 31 journalled on the shaft 25 and periodically lifted by a star-wheel 33, the blades of which strike a roller 32 on the pawl stub. One of the blades is longer than the others to give the conveyer a longer travel at every fourth move, to bridge the gap between containers. The star-wheel 33 is given a continuous rotation by a pulley 36 engaged by a belt 37 passing round a motor-driven pulley 41, an idlerpulley 39 and a pulley 38. The filled containers are delivered on to a platform 43 for disposal, but in a modification the containers may be placed on the conveyer at the top, and may actuate the conveyer by gravity, a pivoted spring-retracted detent oscillated by a continuously rotating cam serving to permit intermittent movement of the conveyer. The pulley 38 is mounted on, and drives, a shaft 8 which moves the conveyers 3, of which three are shown side-by-side the outer ones being shorter than the middle one. Geared to the shaft 8 is a cam wheel 14, in the groove 13 of which rides a roller 12 carried by an arm 11 on a rocker shaft 10. A platform 4 supported by arms on this shaft 10 is thus lifted intermittently, and while turning pushes the articles introduced by the conveyers 3 to the shoot entrance so that thev slide down the shoot. In this case the articles are bottles, and bays 19 are provided in the shoot top edge to receive the bottle necks, the platform 4 pushing the bottles so that they slide bottom foremost into the container compartments. Separate driving means may be provided for the conveyers 3 and for the conveyer 21, mechanism being provided to effect co-ordination of the actions of conveyer 21 and platform 4.
Patent GB-1499135-A (GB)
Title: Manufacture of rear projection screens
IPC: G03B21/62
Filed: 1975-02-19
Abstract: 1499135 Rear projection screen RCA CORPORATION 19 Feb 1975 [27 Feb 1974] 7041/75 Heading G2X A rear projection screen which provides in use substantial uniformity of illumination over a given field of view about the normal to the screen is formed by (a) preparing a hardened gelatin film on a transparent substrate, (b) sensitizing the film to coherent light (e.g. using (NH 4 ) 2  Cr 2 O 7 ), (c) exposing to substantially coherent light which has been transmitted through a diffusing medium, and (d) developing to form a 3-D interference pattern composed of areas of different refractive index.
Patent GB-112231-A (GB)
Title: Improvements in or relating to Treeing Devices for Boots and Shoes.
Inventor: JONES HUGH SNOWIE
IPC: A43D3/14
Filed: 1917-05-16
Abstract: 112,231. Jones, H. S. May 16, 1917. Trees and stretchers. - The toe and heel parts a, bare connected by hinged links c, d pivoted together at h, the link c being pivoted at e to a bracket p on the forepart, while the link d is pivoted at f to a plate g screwed to the face of the heel part, and is under the control of a spring-pressed plunger k. The link c is adjustable, and comprises telescopic portions connected by a spring pin n engaging one or other of holes o. The toe part a is made hollow so. that the heel part and the links can be folded into it for packing purposes.
Patent GB-476281-A (GB)
Title: Improvements in or relating to the manufacture of an oil soluble resinous material and to lubricating oils
IPC: C10M169/00
Filed: 1937-03-10
Abstract: Lubricating oils are thickened by the addition of a rubber conversion product obtained by treating rubber dissolved in an aromatic solvent with a depolymerizing agent such as glacial acetic acid, hydrochloric acid, chloracetic acid, sulphur dioxide, hydrogen sulphide, benzoic acid, mercurous chloride or ammonia, and then with a halide or halogen acid of tin or boron. The product may be precipitated by an alcohol or ketone.  If the solution in mineral oil is cloudy, it may be clay contacted at elevated temperatures.  Specification 460,583 is referred to.ALSO:Rubber dissolved in an aromatic solvent is depolymerized by p  treatment with glacial acetic acid, hydrochloric acid, chloracetic acid, sulphur dioxide, hydrogen sulphide, benzoic acid, mercurous chloride or ammonia, and the solution is treated with a halide or halogen acid of tin or boron; stannic chloride or bromide, boron trichloride and fluoride, fluoboric acid, chloro- and bromo-stannous and stannic acids are specified.  An alcohol or ketone, such as 95 per cent ethyl alcohol or acetone or methyl alcohol containing water, is then added.  The precipitated resinous polymer is completely soluble in mineral lubricating oils, raising their viscosity.  If cloudy, the oil may be clay contacted at elevated temperatures.  Specification 460,583 is referred to.
Patent GB-362267-A (GB)
Title: Process for the preparation of blue and blue-violet sulphurized dyestuffs
IPC: C10J3/00
Filed: 1931-03-06
Abstract: Sulphuretted dyes.--Blue to blue-violet dyes are obtained by treating indophenols and leucoindophenols with alkali metal polysulphides in presence of salts of non-hydroxylated aromatic nitrosulphonic acids not containing an amino group.  According to examples, p-phenylamido-p<1>-oxydiphenylamine is treated under pressure with sulphur and sodium sulphide in presence of sodium m-nitro-benzenesulphonate, and sodium 1-nitro-4-chloro-benzene-3-sulphonate; p-amino-m-methyl-p<1>-oxydiphenylamine is similarly treated in presence of sodium m-nitro-benzenesulphonate, and sodium p-nitro-chlorobenzenesulphonate NO2:Cl:SO3 Na= 1 : 4 : 3; other indophenols and leucoindophenols specified are p-dialkylamino-p<1>-oxydiphenylamines, and those obtained by condensing nitrophenols with diphenylamine, their homologues and substitution products, carbazole and alkyl carbazoles; other nitrosulphonic acids specified are 1-chloro-2-nitrobenzene-4-sulphonic acid, o-nitrotoluene-p-sulphonic acid, and 1 : 5-nitronaphthalene sulphonic acid.  Specifications 129,182 and 290,179, [both in Class 2 (iii), Dyes &c.], are referred to.
Patent GB-589257-A (GB)
Title: Cushion retaining device
IPC: A47C7/38
Filed: 1945-03-20
Abstract: 589,257. Securing cushions to chairs. CHALLIS, P. March 20, 1945, Nos. 7071 and 22474. [Class 52 (iv)] [Also in Group XXII] Cushions are attached to the backs of chairs by loop members of wire or strip material which clip on the top of the chair back. The limbs of the loop members may be made in a plurality of pieces hinged together.
Patent GB-218243-A (GB)
Title: Improvements in or relating to automatic or semi-automatic telephone systems
IPC: H04Q3/00
Filed: 1924-03-19
Abstract: 218,243. Automatic Telephone Manufacturing Co, Ltd., (Assignees of Lomax, C. E.). June 25, 1923, [Convention date]. Automatic and semi-automatic exchange systems.-Each of a group of finder-type secondary switches F has access to all the trunks from a number of groups of primary line switches C. In the system described there are 25 30-point finders controlled by an allotting switch O and serving three groups of 10-point line switches of plunger type controlled by a master switch D. Operation. Line relay 14 on operating locks up in series with pull-in winding 18 and relay 30. Operation of the plunger grounds the terminal 45 through the lower winding of relay 14 and relay 30 which are both of verv low resistance and the master switch D operates in known manner. Relay 30 energizes relay 32 which energizes the stepping magnet 58 of the finder F. When the grounded terminal 52 is reached, switching relay 65 energizes the line relay 80 of the group selector E in a circuit independent of the subscriber's loop. The release relay 81 connects ground to terminal 72 to start the switch O. The ground returned over the release wire short circuits relays 30, 14. The relapse of the latter gives control of relay 80 to the subscriber. Strowger finders may be used. Alarm arrangements. Relay 32 on energizing to start a finder also closes a circuit whereby a lamp L and an audible alarm are operated if the release relay 81 does not short-circuit relay 30 within a definite time.
Patent GB-1377792-A (GB)
Title: Cathodochromic information display
IPC: G09G1/26
Filed: 1972-02-16
Abstract: 1377792 Cathode-ray tube displays INTERNATIONAL COMPUTERS Ltd 8 Feb 1973 [16 Feb 1972] 7112/72 Heading H4T The beam of a dark-trace cathode-ray tube having a screen of cathodochromic material is initially scanned over the whole screen area at a first intensity level to produce coloration which is then selectively removed to write information by a second higher, intensity level of the beam. Alternatively, a constant intensity beam may be employed and the two operations effected by different durations of beam impingement. This manner of operation is stated to avoid the production of colour edge effects which result when information written by coloration is selectively removed by the higher intensity level beam. An embodiment of the basic system in which the tube is a display tube, is described with reference to Fig. 1 (not shown). The tube may also be employed for data storage and Fig. 2 shows an embodiment in which a first tube 1 acts as a buffer store for a second display tube 4. In operation, after initial coloration of both tubes, input data (e.g. from a computer) are supplied via interface 11 from which address information is supplied to X-Y position register 15 under the write control of a Read/Write control circuit 41 to which display information from interface 11 is supplied. Control circuit 41 then operates gate 16 to pass the address information in register 15, or different address information set up in a second X-Y position register 17, to D-A converter 10 which controls the deflection of the beam of both tubes 1 and 4 and the display information in control circuit 41 operates a pulse width selection circuit 42 and pulse generation 13 to produce a comparatively long pulse which is supplied via switch 8 to tube 1 to write the data. Circuit 41 now operates in the Read mode and causes the selection of a very narrow-width pulse, sufficient only to produce phosphorescence of tube 1 and as the screen of the latter is scanned a photomultiplier 3 generates signals corresponding to the stored data which is supplied to the interface 11. A Write mode of circuit 41 again occurs and pulse generator 13 again produces the comparatively long pulse which is now supplied via switch 8 to tube 4 to display the data. For erase and precoloration of the screens a pulse length somewhat shorter than that employed for writing is produced. Keyboard operation may be effected via Display Control 18 and other interaction may be provided by means of a "heat-pen" preferably allowing two thermal levels of operation. Digital data may be stored in tube 1 by means of the disc-and-ring type bit storage technique or merely by the presence of absence of light at particular locations.
Patent GB-924782-A (GB)
Title: Apparatus for cooling sintered ore and like material
IPC: C22B1/20
Filed: 1962-02-23
Abstract: 924,782. Cooling sintered &c. materials. METALLGESELLSCHAFT A.G. Feb. 23, 1962 [March 21, 1961], No. 7235/62. Class 51 (2). An apparatus for cooling very hot bulk materials such as sintered ore comprises a container 4 having inclined louvred inner and outer walls 7, 8 and gas impermeable side walls. The hot material is charged into the container by a conveyer 13 and discharged after cooling through a door 14. Cold air from a duct 17 flows through the louvred wall 7, through the material and discharges through the louvred wall 9. The container is supported on a framework 1 having outer inclined beams 2 provided with upper pins 3 which are engaged by hooks 5 projecting from the upper end of the container so that the container hangs on the pins 3 and is free to expand and contract independently of the framework. Lower pins 11 form sliding bearings with hooks 12 projecting from the lower end of the container. Individual containers may be mounted in a straight or curved row and loaded and unloaded from and to moving stations or on a rotatable circular framework and loaded and unloaded from and to stationary stations.
Patent GB-397398-A (GB)
IPC: B65G17/08
Filed: 1933-03-10
Abstract: 397,398. Endlessbelt conveyers. FLOTTMANN AKT.-GES., 94, Flottmannstrasse, Herne, Westphalia, Germany. March 10, 1933, No. 7344. Convention date, March 14, 1932. [Class 78 (i).] In conveyers of the kind in which the belt works in a trough, the belt is composed of links 12 consisting of flattened coiled springs whose coils are comparatively close together and mesh with each other. The links are connected by rods 13<1> threaded through their meshed coils. The ends 14 of the rods are bent to engage one of the adjacent rods. The belt is made in sections which are of the same length as the trough sections, or of twice this length, and are held together by removable rods 15 threaded through the meshed coils at the joints and retained by the pressure of the inwardly bent end 16 of one of the links against the curved part 151. Two rods 13<1>, 13a are provided at the point of connection of the last two spring members of the righthand section of the belt. Their ends are bent in opposite directions. Each section of trough 1, Fig. 2, has at one end on the outside two taper pins 4 adapted to engage slotted members 5 fixed to the adjacent section. The parts are held together by pins 6 which are perforated to receive keys 7.
Patent GB-1416224-A (GB)
Title: Process for producing microcapsules
IPC: C11B9/00
Filed: 1973-02-14
Abstract: 1416224 Microcapsules FUJI PHOTO FILM CO Ltd 14 Feb 1973 [14 Feb 1972] 7365/73 Heading B8C Microcapsules containing an oil are prepared by emulsifying in a polar liquid continuous .phase the oil to be encapsulated and which contains first and second wall-forming substances which are capable of reacting together to form a high molecular weight compound, and forming microcapsules by causing a third wallforming substance present in the polar liquid to react at the surface of the oil droplets with the said first wall-forming substance in the same system as the first and second substances are reacted in the interior of the droplets. Suitable first substances are compounds containing two or more isocyanate, isothiocyanate, epoxy, acid chloride, chloroformate or epichlorhydrin groups. Suitable second and third substances are compounds which will react therewith and which contain two or more hydroxyl, carboxyl, mercapto or amino groups. Suitable catalysts to accelerate the reactions may be present, as may be dispersing agents and protective colloids useful in forming the emulsion. The oil may be a vegetable, mineral or synthetic oil and may contain other dissolved substances, in particular dyes or colour formers. Microcapsules containing such constituents may be coated on substrates in the usual way to form record materials.
Patent GB-557793-A (GB)
Title: Improvements in or relating to equipment for transferring freight containers to and from vehicles
IPC: B60P1/64
Filed: 1942-06-02
Abstract: 557,793. Handling transferable containers. NATIONAL FITCH CORPORATION. June 2, 1942, No. 7484. Convention date, July 11, 1941 [Class 78 (iv)] Equipment for transferring a freight container C to or from a vehicle A comprises a pair of channel irons c mounted on the vehicle and adapted to receive skids a on the container C. The transference is effected by a pair of motor driven units 26 each comprising a driven chain 27 coupled to the load by links 31, 32, members 33 and tie bars 29. The chains are driven by a motor 20 through reduction gearing 22 and sprocket mechanism inside casings 67, so that the load can be slid on to or off the vehicle by operation of the motor in the appropriate direction. In order that the load may be moved in one operation for the whole length of its path without the driving chains extending beyond the limits of the vehicle, the drive transmitting parts 29, 31, 33 are arranged to extend beyond the sides of the vehicle at the beginning and end of the travel (Figs. 1, 12 and 19). At the beginning of a loading operation, Fig. 12, dogs 43, 44 on links 31, 32 are driven by members 46a, 46b on the chain 27 until a second pair of members 47a, 47b on the chain engage the part 45 of member 33, Fig. 13, to continue the drive for the greater part of the operation. As the movement proceeds, links 31, 32 run clear of cross bar 83 and pins 88 fall into a vertical position, Fig. 5. The continued driving of member 33 causes links 31, 32 to engage pins 89 and cross bar 84 so as to assume a horizontal position in which the dogs 43, 44 engage a third set of driving members 48a, 48b on the chain, which complete the drive after member 33 has become free of members 47a, 47b, Fig. 19. A similar reversal of the links 31, 32 takes place during the reverse operation of unloading. When the vehicle is loaded, the bars 29 are removed and the motor operated to run the links 31, 32 back until the ends are flush with the ends of the chains.
Patent GB-362798-A (GB)
Title: An improved bobbin for the ground ropes of fishing trawls
IPC: A01K75/06
Filed: 1931-03-11
Abstract: 362,798. Trawling - gear. WILDSMITH, H. B., Dens tone, Princes Road, Cleethorpes, and THICKETT, W. H., Grimsby Docks, Grimsby, both in Lincolnshire. March 11, 1931, No. 7492. [Class 48.] The flanges of setting-bobbins for ground ropes are rounded off so that their sections form quadrants C1, C2 which merge by another curve into the box b. The bobbin, Fig. 1, tapers off at d and then swells again to form shoulders c. Alternatively webs f, Fig. 2, stretch between the flanges and the shoulders.
Patent GB-614431-A (GB)
Title: Improvements in or relating to the dispensing of beverages
IPC: G07F13/06
Filed: 1946-03-11
Abstract: 614,431. Coin-freed beverage dispensing apparatus. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. March 11, 1946, No. 7504. Convention date, March 16, 1945. [Class 27] [Also in Group II] In an automatic apparatus for dispensing a mixed drink, comprised of predetermined quantities of a flavour or syrup and of a diluent such as carbonated water, the flavour and diluent are discharged under pressure into a cup and discharge of the flavour does not commence until at least a substantial part of the diluent has been discharged. The energy of the flavour stream, which is directed away from the sides of the cup, is then dissipated in the diluent already in the cup and proper mixing is ensured. The carbonated water valve 15 and syrup valve 17 are operated by solenoids 16 and 18 controlled by a contact drum 28 driven by a timer motor M. The mechanism is coin-operated, an inserted coin momentarily closing contacts 22. This starts the motor M whose circuit is then maintained for the dispensing cycle by drum contact 31 engaging contacts 30 and 32. Drum contact 31 simultaneously engages a contact 35 to energize solenoid 16 so initiating the flow of carbonated water. Subsequently a stepped part 39 of the drum contact engages a contact 40 to energize solenoid 18 to open the syrup valve. If the carbonated water is then to be stopped the drum contact is cut away at 41; otherwise delivery of the carbonated water ceases with the syrup when the end of the drum contact passes all the contacts 30, 32, 35 and 40, when both valves close and the motor M stops. The syrup is delivered from a tank which is either maintained under pressure, or is furnished with a pressure-operated dispensing pump. In either case the pressure is obtained, through a reducing valve, from the carbondioxide supplying the water carbonator.