baber/WOPTO huggingface dataset:
Patent GB-407472-A (GB)
Title: Improved method of and means for producing hollow billets for hollow drills and the like
IPC: B22D7/04
Filed: 1932-12-02
Abstract: 407,472. Casting hollow ingots. AKTIEBOLAGET BOFORS, Bofors, Sweden. Dec. 2, 1932, No. 34214. Convention date, Nov. 19. [Class 83 (i).] Moulds.-In making hollow ingots for hollow drills &c., the metal is cast upwardly about a tube 7 in a mould 1 with a discard head box 1A. The mould 1, or each mould in a cluster or each cavity 10 in a multiple mould 1, Fig. 3, is shouldered at 3 to support a thin metal cone 4 which is surrounded by sand, asbestos &c. 2 and pressed into close engagement with'the mould and the tube 7 by a cover 9. The molten metal enters the bottom of the square-sectioned mould through holes 15 arranged on a diagonal and spaced from the walls 1 and the tube 7 which is centred by a recess 16. Aligning pins and handles 19 may be provided for the cover 9. Air vents 18 are provided around the tube.
Patent GB-332494-A (GB)
Title: Improvements in fastenings for boxes, trunks & the like
IPC: E05B65/52
Filed: 1929-11-09
Abstract: 332,494. Mervelay, L. Nov. 27, 1928, [Convention date]. Hasp fastenings; fastenings for boxes.-A fastening for boxes, trunks, &c. comprises a rocking plate 9 on the box 6 with an inturned upper end 10 adapted to engage a projection 11 on the lid 13. The plate has a projection 14 located near its pivot 7 adapted to snap over a ridge on a plate-spring 15 which holds the plate in either of its two positions. The plate and spring are mounted in a casing 4 which has a projection 17 adapted to engage in a recess 18 in projection 11 when lid 13 is closed. The plate is rocked by pressure applied at the appropriate side of the pivot.
Patent GB-361597-A (GB)
Title: Improvements in the manufacture and production of dimethylol acetone and its homologues
IPC: C07C45/75
Filed: 1930-11-14
Abstract: Dimethylol acetone and its homologues are prepared by treating a saturated aliphatic ketone with formaldehyde, or a polymer thereof or a substance giving rise thereto, at a temperature between 0 and 60 DEG  C. and in the presence of aqueous caustic alkali, the alkalinity of the reaction mixture being such that pH is greater than 10, preferably between 10.3 and 11,3.  Examples are given of the preparation of dimethylol acetone and dimethylol methyl ethyl ketone from acetone and methyl ethyl ketone respectively and aqueous formaldehyde solution in the presence of aqueous caustic soda or potash, and of dimethylol acetone from acetone and trioxymethylene in the presence of aqueous caustic soda and ethyl alcohol. Specification 17220/08, [Class 2, Acids and salts, Organic &c.], is referred to.
Patent GB-487060-A (GB)
Title: Exhaust silencer heater for road vehicles and aeroplanes
IPC: B60H1/18
Filed: 1936-12-15
Abstract: 487,060. Heating air and vehicles. WALLER, T. Dec. 15, 1936, No. 34371. [Classes 64(i) aud 64(ii)] Air supplied to vehicles is heated in a casing 1 within or fitted to the outside of an exhaustsilencer 2 and containing heat - conducting material in the form of copper or steel wool, &c., the air entering by a preferably flared inlet at or adjacent to one end of the casing facing the normal direction of travel of the vehicle and leaving by a valved delivery pipe connected, for example, to one or more gratings 17 in the vehicle floor. The copper wool may be confined within about a third of the length of the casing by perforated plates 8, 11. The delivery pipe valve which may be operated by a Bowden wire 22 may carry another valve adapted to close an outlet 25 to atmosphere when the pipe valve is open. A modified construction for detachable fixing comprises an arcuate casing secured to the silencer by clips or straps and provided with a number of part-circumferential slits and deflectors. A suction fan may be fitted, e.g. at the grating.
Patent GB-789481-A (GB)
Title: Process for the production of foam materials
IPC: C08J9/38
Filed: 1955-12-01
Abstract: In a process for the production of soft and absorptive foam materials, a synthetic polyurethane foam is treated with an alkaline or acid reacting agent until a reduction in weight of approximately 10 to approximately 50 per cent of its original weight takes place. The treatment is preferably effected simultaneously with a mechanical treatment of the foam such that the foam is continuously compressed and again released.  After the treatment, neutralizing and washing processes for the removal of the acid or alkali are preferably effected.  An aftertreatment with acetic acid improves the handle of the products.  The polyurethane can be produced, for example, by reacting a diisocyanate with a polyester or with a compound containing free hydroxyl groups such as butane-1,4-diol or hexane-1,6-diol.  The softening effect is considered to be the result of the attack of the acid or alkaline baths on the walls separating the cells in the foam.  In examples, foams produced by reacting a diisocyanate such as hexamethylene diisocyanate with a polyester containing free hydroxyl groups or with a compound containing free hydroxyl groups such as butane-1,4-diol or hexane-1,6-diol and heated with (1) 10 per cent sodium hydroxide solution; (2) 20 per cent barium hydroxide solution; (3) 30 per cent sodium carbonate solution; (4) 10 to 20 per cent sulphuric acid or 30 per cent boric acid. Alternative reagents specified are waterglass, sodium aluminate, ammonium chloride, ammonia, urea, trisodium phosphate, thiosulphates, sodium sulphide, ethylene-diamine, dimethylamine and hexahydrodimethylaniline.
Patent GB-342403-A (GB)
Title: Improvements in apparatus for displaying several designs interpenetrated on a single surface
IPC: G09F19/12
Filed: 1929-11-12
Abstract: 342,403. Changing 'signs. PUNCH, J. F. and HENLEY, J., 7, Academy Street, Cork, Ireland. Nov. 12, 1929, No. 34478. [Class 3 (i).] In display apparatus of the type comprising superimposed signs of complementary or other colours, each sign being revealed or modified when illuminated bv light rays of its own colour, the superimposed designs consist of an assembly of separate areas d of the same colour with spaces in between which show a background at the non-superimposed parts and the separate areas e of another differently coloured design at the superimposed parts. The areas may be of strip, triangular, rectangular, or other shape. The light may be transmitted through or reflected by the sign. The sign may be mounted on a pendulum which operates differently coloured lights in different positions, or on an endless moving band.
Patent GB-408947-A (GB)
Title: Improvements in process for production of lubricating oil
IPC: C10G21/02
Filed: 1932-07-11
Abstract: <PICT:0408947/III/1> Hydrocarbon oils such as lubricating-oil distillates are mixed with a liquefied normally gaseous hydrocarbon, the solution is chilled and precipitated wax removed, and the wax-free oil is then extracted with a solvent for non-paraffinic constituents leaving a paraffinic oil.  The gaseous hydrocarbon used is preferably a fraction obtained from natural gasoline conconsisting mainly of propane.  Non-paraffinic solvents specified are liquefied sulphur dioxide, aniline, methyl formate, acetone or a mixture of acetone and benzol.  A lubricating oil distillate containing asphalt flows from a tank 1 through a pipe 4, in which it is mixed with liquefied propane from a tank 11, and passes into a chiller 5 where the temperature is lowered by allowing a portion of the propane to evaporate.  The cooled mixture then passes through an agitator 16 to a decanter 18 in which the precipitated asphalt separates.  The asphalt is drawn off through a pipe 21 and to a heater 22, in which propane is recovered, and then through a settling tank 24 to a tank 27.  The propane solution of oil flows from the decanter 18 to the chiller 36 in which a further quantity of propane is evaporated to lower the temperature and precipitate the wax.  The wax is removed in a centrifuge, filter or cold settling stage 43, and the wax-free oil is freed from propane in an evaporator 70.  The oil then passes through a cooler 76 to the base of an extraction column 104 at the top of which liquefied sulphur dioxide is admitted from a tank 79. The two liquids flow in counter current and the sulphur dioxide and extracted substances flow into an evaporator 96 provided with a steam coil 106.  The liberated sulphur dioxide is recovered and returns to tank 79, and the oil extract passes to a tank 100.  The purified oil rising in the column 104 passes through a settling chamber 85 in which the main part of the sulphur dioxide is removed and then to an evaporator 88 provided with a steam coil where the remainder of the sulphur dioxide is recovered.  The oil is withdrawn through a pipe 92, dissolved in liquefied propane and the solution is mixed with sulphuric acid admitted from a tank 45.  The mixture passes through an agitator 49 into a sludge separator 51.  The sludge is withdrawn through a pipe 55 and freed from propane in a heater 56 and then passes through a separator 58 to the sludge tank.  The recovered propane vapours are passed through a tower 62 p  containing caustic soda whereby traces of sulphur dioxide are removed, and the purified vapours are then liquefied for re-use. The acid treated oil dissolved in propane is withdrawn from the separator 51 and passes through a tower 125 containing clay, and finally through a steam heated evaporator 119 in which propane is removed, to a storage tank 93. Specification 408,948 is referred to.
Patent GB-402252-A (GB)
Title: Improvements relating to automatic locks for milk bottles and the like when engaged with a door and similar partitions
IPC: A47G29/24
Filed: 1932-12-06
Abstract: 402,252. Securing milk-bottles to doors &c. HARDING, W. M., 6, Landore Avenue, Port Talbot, Glamorgan. Dec. 6, 1932, Nos. 34494/32 and 9846/33. [Class 44.] A milk bottle holder consists of a spring wire clip A which embraces the bottle and has legs H which are passed through a slot in a door and engage behind the door, the ends of the legs entering holes E in a plate D, so that the bottle can be released only from inside the door. The slot in the door receives a sleeve portion F carried by either plate C or D. The clip A may be formed with loops B into each of which is hooked, before the clip A is secured to the door, a clip I carrying an additional bottle.
Patent GB-829205-A (GB)
Title: Freighter for transporting gases or liquefied gases
IPC: B63B25/08
Filed: 1956-11-12
Abstract: 829,205. Storing gases or liquefied gases. WESER A. G. Nov. 12, 1956 [Nov. 12, 1955], No. 34559/56. Class 8(2) [Also in Group XXXIII] A container for transporting or storage of gases or liquefied gases comprises a cylindrical tank 2, Fig. 1, or a tank formed from two merging cylindrical parts e.g. 5, 6, Fig. 2. The tank may be formed from a corrosion-resisting material e.g. chrome-nickel steel with a covering of heat insulating material. As shown in Fig. 2, the container may be stiffened by a partition or tie rods 8. The container may be supported by a framework.
Patent GB-1324170-A (GB)
Title: Electrophotographic apparatus
IPC: G03G15/10
Filed: 1970-07-16
Abstract: 1324170 Liquid developing apparatus; automatic control of concentration CANON K K 16 July 1970 [16 July 1969] 34561/70 Headings G2H and G3R When the concentration of toner in a developer tank 1 falls below a selected value, a predetermined quantity of toner is supplied thereto, the supply means then being rendered inoperable for a certain period to allow the added toner to become mixed with the developer. As shown, a pump 2 circulates the developer around a tube 5 for sampling by a light 6 and photo-cell 7 connected to a Schmitt trigger 8 to feed a signal to an AND gate 9 when concentration falls. A pulse generator 10 feeds 0À1 second pulses to gate 9 every 30 seconds. When the gate 9 simultaneously receives a signal and a pulse, an amplifier 11 operates a pump 12 to supply toner from a reservoir 13. Further toner cannot be supplied until the next pulse is received from generator 10.
Patent GB-1440886-A (GB)
Title: Process for destroying microorganisms and for inhibiting their proliferation
IPC: A61K8/00
Filed: 1974-08-06
Abstract: 1440886 Preserving liquids BATELLE MEMORIAL INSTITUTE 6 Aug 1974 [6 Aug 1973] 34687/74 Heading A2D [Also in  Division A5] Microorganisms contained in a fluid medium e.g. mineral water or cosmetic product, are destroyed or inhibited by ions of Zn, Cd, Hg, Sn, Pb, Sb or a transition metal by a process wherein the medium is kept in contact with an irregular surface comprising a plurality of galvanic cells each comprising an anode of one of the aforesaid metals and a cathode of at least one metal with a higher oxidation potential than the aforesaid metals. It is preferred that the anode metal be silver on a silver black alloy of 90% by wt. silver, and the cathode metal be gold or platinum. The irregular surface preferably comprises surface irregularities from 50-2000Á in size and a ratio between its effective surface and its geometric surface of at least 2 and at least 5. The metals can conveniently be deposited inside the stopper of bottles containing the medium to be protected.
Patent GB-900397-A (GB)
Title: A process for the production of hydrazine hydrate
IPC: C01B21/16
Filed: 1959-10-13
Abstract: Hydrazine hydrate is prepared by saturating an aqueous solution, or suspension, of dihydrazine sulphate at below 20 DEG  C. with NH3, separating ammonium sulphate, separating residual H2SO4 from the solution remaining either by saturating with NH3 under pressure, or by treating with an alkali metal hydroxide, e.g. NaOH, in amount at least stoichiometric to the H2SO4, and recovering N2H4.H2O by evaporation and rectification of the vapours.  Alternatively, in a single operation the dihydrazine sulphate solution, or suspension, is saturated with NH3 under a pressure of 2-10 atms. at -20 DEG  to 0 DEG  C., (NH4)2SO4 is separated, and N2H4.H2O recovered from the solution.  Where NaOH is used, the alkali metal sulphate may be removed by saturating with NH3, or by precipitation by addition of a volatile alcohol, e.g. methanol or ethanol, or by evaporation to dryness.
Patent GB-1076928-A (GB)
Title: Improved weft thread selecting mechanism for looms driven by a dobby mechanism
IPC: D03C1/36
Filed: 1964-08-25
Abstract: Weft selection in a shuttleless loom is controlled by the jack levers of the warp thread dobby.  The jack lever (1) rotates a pivoted lever (4) to move a cable (18) which operates the weft selector.  Springs (19, 23) return the lever (4) and cable (18) to their rest positions.
Patent GB-866018-A (GB)
Title: A suspension device for jet propulsion units
Inventor: JUMELLE LOUIS FRANCOIS
IPC: B64D27/26
Filed: 1957-11-07
Abstract: 866,018. Engine mountings for aircraft. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTIONS DE MOTEURS D'AVIATION. Nov. 7, 1957 [Nov. 12, 1956], No. 34717/57. Class 4. [Also in Groups XXV and XXVI] A jet propulsion unit is carried in an aircraft nacelle by a plurality of supports disposed in the vicinity of the centre of gravity of the unit, at least one support comprising a trunnion bolted to the nacelle which is engaged by a bearing having a part-spherical surface coacting with a corresponding surface on the jet propulsion unit casing and at least one of the supports being adapted to permit the junction between the support and the casing to move longitudinally with respect to the casing, all of the joints being arranged to withstand streams tangential to the casing. The jet propulsion unit, Fig. 1, is suspended by two lateral pivotal supports 1 at the extremities of a horizontal diameter close to the centre of gravity of the unit and a third support 2 of the pivotal socket type located at the upper or lower part of the unit in the transverse plane passing through the supports 1. Each support 1 is mounted in a housing 5, Fig. 2, provided in the casing. A bushing 3 provides a spherical seat for a bearing 4 which is biased by a spring 9 to a position in which the bore is coaxial with the bushing so as to facilitate the insertion of the tunnion 8. The upper 1 or lower support 2, Fig. 3, comprises a pivotal bearing 10 housed in a bushing 11 which is provided with two flats so that it may slide between guides 13 fixed in a support 14. To facilitate the installation of the engines, the trunnion may be retained in position by a spring loaded ball in the support engaging a groove in the trunnion. The ball is released when the engine is installed and the support bolted in position. In another modification, Fig. 6 (not shown), the trunnion is located axially relative to the bearing by means of a knob which engages the inner periphery of the bearing and is held in position by a bolt. The unit is prevented from rotating about the horizontal axis passing through the supports 1 by an adjustable link 28. In a modified form of mounting, Fig. 8 (not shown), the upper support is an anchored pivotal socket and the lateral supports sliding sockets. In a further modification, Fig. 11 (not shown), the supports at the extremities of the diameter are arranged in a vertical plane and the remaining support in a horizontal plane through the engine axis. One of these supports may be dispensed with.
Patent GB-1397408-A (GB)
Title: Dewatering defices for use on papermaking machines
IPC: D21F1/48
Filed: 1971-07-23
Abstract: 1397408 Papermaking apparatus HUYCK CORP 21 July 1972 [23 July 1971] 34790/71 Heading D2A A hydrofoil device comprises a hydrofoil blade 10 mounted on a support 20, the blade having a T-shaped channel 38 and projections 31, 33, and the support 20 having channels 19, 21 for slidably receiving the projections. The trailing surface 16 of the blade 10 diverges from the wire 15 at an angle in the range 0‹ to 5‹ whereby suction is produced below the wire as it moves over the surface 16. The support 20 may be of stainless steel and the blade 10 of plastics. Support strips may be positioned between the top 36 of the support 20 and the top 34 of the channel 38. The T- shaped top of the support 20 may be an individual part fixed to the top of a flat plate to provide the channels 19, 21. In a second embodiment, Fig 3 (not shown), flat discs are connected by screws to a support, collars being disposed between the discs and the support to provide channels for engaging the projections on the blade. The discs and collars may be integral. Square or rectangular plates may be substituted for the discs.
Patent GB-1477875-A (GB)
Title: Photographic cameras
IPC: G03B7/01
Filed: 1974-08-07
Abstract: 1477875 Cameras SEIKO KOKI KK 7 Aug 1974 [24 Aug 1973] 34800/74 Heading G2A A camera is operable in an automatic mode in which prior to exposure, a counter 8 counts a number of pulses proportional to object brightness, the count being reversed when the shutter opens and the shutter being closed when the count is zero; and in a manual mode in which the shutter remains open until a manually set number of pulses has been generated. In the automatic mode a circuit 5 having a photo-conductor 5-2 generates a pulse whose width depends on object brightness. A NOR gate 6 is opened for the duration of this pulse to feed standard pulses from a generator 4 to the counter 8. A terminal 9-1 to 9-8 is selected according to film speed and diaphragm aperture. If any of terminals 9-5 to 9-8 is selected, a corresponding NOR gate 9-15 to 9-18 delivers the pulses from gate 6 to a corresponding stage 8-2 to 8-5 of the counter 8. If any of the terminals 9-2 to 9-4 is selected, the pulses from NOR gate 6 pass through the stages 7-1 to 7-3 of a frequency divider 7 until they reach a switching element 9-11 to 9-14 corresponding to the selected terminal. The pulses then pass through the switching element and circuits 11 and 13 to stage 8-1 of counter 8. Upon shutter opening the counter is reversed, pulses from generator 4 by-pass NOR gate 6 by means of a circuit 10 and pass through stages 7-1 to 7-(m-3) of frequency divider 7 before passing through circuits 11 and 13 to counter 8. This slowing down of the subtracting pulses enables the adding pulses to be counted very quickly before exposure. When the count reaches zero, a zero detector 16 operates a circuit 18 to close the shutter. In manual operation, the counter 8 is set so that it can only add. A terminal 9-1 to 9-8 is selected according to the desired shutter speed and upon shutter opening, pulses from generator 4 are fed through circuit 10 to divider circuit 7. If one of terminals 9-1 to 9-4 is selected, the pulses pass through the divider stages until they reach a switching element 9-21 to 9-24 corresponding to the selected terminal. These switching elements are connected to a line 17-11 leading to the shutter closing circuit 18. If one of the terminals 9-5 to 9-8 is selected the pulses pass through all the stages of divider 7 then through circuit 13 to the stages of counter 8 until a switching element 9-25 to 9-28 corresponding to the selected terminal is reached. These switchelements are also connected to line 17-11. An indicator circuit having light emitting diodes Ll- L5) Fig. 6 (not shown) indicates the shutter speed or under- or overexposure in the automatic mode.
Patent GB-647073-A (GB)
Title: Arrangement for providing particular characteristics in a line circuit
IPC: H04Q1/18
Filed: 1947-12-30
Abstract: 647,073. Automatic exchange systems. STAATSBEDRIJF DER POSTERIJEN TELEGRAFIE EN TELEFONIE. Dec. 30, 1947, No. 34846. Convention date, Sept. 3, 1945. [Class 40 (iv)] In a line circuit in which a series circuit through resistances W1 . . . W4 when the line is looped provides the necessary calling and busy potentials, additional resistances W5, W6, together with rectifiers S1, S2, are provided for indicating the class or identity of the line. When the line is found by a line finder OZ, a resistance W9 connected to the test wiper d in series with W6 changes the potential of the d wire sufficiently to render S1 non-conducting, so that the characteristics of the calling line depend only on W6. Similarly, when the line is seized by a final selector EK, a resistance W7 is connected to the test wiper c with similar effect. The arrangement may be used for determining the number of a line in a group of 100 lines, the tens and units digits being indicated by the potentials on the d and c wires respectively.
Patent GB-1088337-A (GB)
Title: Automatic tracking radar system
IPC: G01S17/87
Filed: 1966-08-03
Abstract: 1,088,337. Wave-energy direction finding. COMPAGNIE GENERALE D'ELECTRICITE. Aug. 3, 1966 [Aug. 4, 1965], No. 34873/66. Heading H4D. A laser transmitter axis is slaved to that of an automatic tracking radar. The optical apparatus may include a mosaic of lead sulphide cells for affording target direction indication. The laser may be used for pulse-echo ranging.
Patent GB-1193496-A (GB)
Title: Improvements in and relating to a Storage Bin for the Storage of Granular Materials
Inventor: STEWART RONALD
IPC: B65D90/08
Filed: 1967-07-28
Abstract: 1,193,496. Silos. KENMORE GRAIN STORAGE Ltd. 28 Oct., 1968 [28 July, 1967], No. 34891/67. Heading E1T. In a silo comprising a lining bag of plastics material disposed within a wire-mesh container 11, the top of the latter is providied with a roof structure 12 consisting of resilient elements 13 which on being connected to the rim 11a of the container are upwardly flexed to define a dome-shaped structure to receive roof sheeting. The elements 13 are welded to-gether at their centres and provided at each end with apertured flanges 14, 15 for attachment to the rim 11a, a central supporting beam 20 and strut 22 being additionally provided, if desired.