baber/WOPTO huggingface dataset:
Patent GB-732652-A (GB)
Title: An improved method of extracting naphthalene from tar distillation fractions
IPC: C07C7/14
Filed: 1950-08-04
Abstract: Naphthalene is obtained from a naphthalene oil fraction derived by the distillation of tar by cooling the fraction with a cold aqueous liquid to give a precipitate of crystalline naphthalene which is then separated, preferably in a centrifuge.  Suitable fractions are those with a 95 per cent boiling range of 210-225 DEG  C., a freezing point of 72-78 DEG  C. and a naphthalene content of 75-80 per cent by weight.  The aqueous liquid may be water or a solution of an alkali, an alkaline earth or a salt.  The aqueous liquid may be sprayed on to the surface of the fraction while the fraction is agitated or the aqueous liquid may be injected under the surface of the fraction, whereby the fraction is automatically agitated.  Preferably the fraction is cooled to below 27 DEG  C.  The direct cooling may be augmented by indirect cooling.  Three examples are given. Specifications 172,937, [Class 2 (iii)], 620,753, [Group III], and U.S.A. Specification 2,078,963 are referred to.ALSO:Naphthalene is crystallized from a naphthalene oil fraction derived by the distillation of tar by cooling the fraction with a cold aqueous liquid to give a precipitate of crystalline naphthalene which is then separated, preferably in a centrifuge. Suitable fractions are those with a 95 per cent boiling range of 210-225 DEG  C., a freezing point of 72-78 DEG  C., and a naphthalene content of 75-80 per cent by weight.  The aqueous liquid may be water or a solution of an alkali, an alkaline earth or a salt. The aqueous liquid may be sprayed on to the surface of the fraction while the fraction is agitated or the aqueous liquid may be injected under the surface of the fraction whereby the fraction is automatically agitated.  Preferably the fraction is cooled to below about 27 DEG  C.  The direct cooling may be augmented by indirect cooling.  Three examples are given.  U.K. Specifications 172,937, [Class 2 (iii)], 620,753 and U.S.A. Specification 2,078,963 are referred to.
Patent GB-1215212-A (GB)
Title: Protecting the inner walls of a reactor for the synthesis of melamine
IPC: C07D251/60
Filed: 1968-04-25
Abstract: 1,215,212. Melamine. BADISCHE ANILIN- & SODA-FABRIK A.G. 25 April, 1968 [26 April, 1967], No. 19585/68. Heading C2C. [Also in Divisions B1-B2] Melamine is produced in the gas phase from urea in the presence of catalysts, such as aluminium oxide, and ammonia at temperatures of from 220 to 500 C. wherein the temperature of the inner wall of the reactor is kept at a lower temperature than prevails in the reaction zone by a layer of catalyst over the surface of the inner wall of the reactor held in position by a plurality of circumferential ledges.
Patent GB-129199-A (GB)
Title: Improvements in or relating to Apparatus for Feeding Pulverized Fuel.
IPC: F23K3/00
Filed: 1918-11-27
Abstract: 129,199. Fuel Saving Co., (Assignees of Wood, W. D.). Sept. 27, 1918, [Convention date]. Fuel, feeding.-Apparatus for feeding pulverized coal to furnaces, of the type comprising one or more pairs of closely adjacent screw-conveyers, is provided with means for supplying an air blast about the forward ends of the conveyers to carry the fuel to the furnace. As shown, pairs of conveyers 12, each pair separated. by a partition 56 to prevent one conveyer merely feeding the other, draw fuel from a bin 4 into the path of an air blast passing through an enlargement 14 of the casing 5 of the conveyers. The conveyers are driven in opposite directions by an engine 29 through clutches 34, 35 interconnected with dampers in the air passage so that when one pair of conveyers is not working its air blast is cut off. Partitions 16 in the enlargement 14 deflect the blast around the conveyers. The engine 29 is provided with a speedometer and a governor adjustable from a distance to vary the rate of feed.
Patent GB-410636-A (GB)
Title: Foldable box
IPC: B65D5/62
Filed: 1933-07-11
Abstract: 410,636. Folding boxes. BLITZ, (nee SPIER), M., 38, West 59th Street, New York, U.S.A. July 11, 1933. Nos. 19622 and 19623. Convention dates, July 11, 1932 and March 4, 1933. [Class 18.] In a foldable box having double side walls, the walls 2, 3, Fig. 1, secured to the rigid bottom 1 are flexible and connected at their short edges a and the rigid walls 4, 5 are hinged to the upper edges of the walls 2, 3 and not connected at their short edges b so that they may be folded down inside the walls 2, 3 with their edges c against the bottom to make the box rigid or, in their raised position, they may be used as the cover of a box with flexible side walls 2, 3 ; when used as a cover the walls 4, 5 may be connected by fastening members C. In a modification, Fig. 4, a lid 7 is provided and is connected to the bottom 1 by flexible straps 8 so that it may be positioned on the bottom when an open box is desired. The straps 8 on the lid 7 may be connected to the edge b of one of the walls 4 or 5 and in other forms the lid 7 is connected by straps to the hinged edge of a wall 4 or 5, the straps being detachably connected to the lid and passing through slides so that the lid may be positioned on the bottom of the box, or be hinged about the wall 4 or 5. In a further form a pair of lids is provided each lid being hinged to the edges d of a pair of opposite walls 4.
Patent GB-1456795-A (GB)
Title: Digital data sample decision and hold circuit
IPC: H04L25/52
Filed: 1975-05-09
Abstract: 1456795 Tunnel diode circuits; telegraphy TRW Inc 9 May 1975 [16 May 1974] 19695/75 Headings H3T and H4P A high speed sample decision and hold circuit for sampling and reconstructing a non-return to zero digital data signal comprises a Goto pair of tunnel diodes 42, 43 having biasing and balancing means 45 ... 48, 45<SP>1</SP> ... 481 and supplied with the input signal to their common junction 44 and clock signals of opposite polarity, the common junction being coupled to a bi-stable circuit comprising a third tunnel diode 63. The invention is applicable to use in a bit synchronizer (Fig. 1) in which the NRZ data is separated from noise by a filter 12, coupled by an amplifier 15 to the decision and hold circuit 16. An unfiltered version of the input is differentiated at 22 and fed to a phase locked loop 28 which extracts the clock component. Waveforms (Figs. 2 and 7, not shown) indicate that the filter 12 greatly reduces the slope of the leading and trailing edges of the input data 10, and that the monostable Goto pair 42, 43 (Fig. 3) converts the input to a return to zero waveform which is coupled via a back diode 60 to the tunnel diode bi-stable 63 which restores the NRZ form. The back diode 60 may be replaced by an amplifier feeding a series pair of hot carrier diodes, bridged by a further hot carrier diode connected in anti-parallel.
Patent GB-451151-A (GB)
Title: Improvements in or relating to feeding cylindrical objects
IPC: B65C9/02
Filed: 1935-07-11
Abstract: 451,151. Feeding cylindrical articles from hoppers &c. SAUNDERS, E. A., and MOLINS MACHINE CO., Ltd., 2, Evelyn Street, Deptford, London. July 11, 1935, No. 19847. [Class 78 (i)] [See also Group XV] Cylindrical articles 1, e.g. tins to be labelled, move down a hopper 2 and past a rotating gate 5 to a conveyer belt 4. The gate 5 is mounted on an arm 6 which yields against a spring 8 and is driven by a sprocket wheel 11 coupled thereto by a pin 12 and slot with a return spring. The belt 4 is driven faster than the gate 5 so as to spin the article 1 and set its axis transversely to the belt. Labels 19 may be fed under rollers 18 to the articles. Specification 327,551, [Class 73], is referred to.
Patent GB-344322-A (GB)
Title: Improvements in an apparatus for handling and emptying glass melting pots
IPC: C03B13/18
Filed: 1930-06-30
Abstract: 344,322. Glass manufacture. NAAMLOOZE VENNOOTSCHAP MAATSCHAPPIJ TOT BEHEER EN EXPLOITATIE VAN OCTROOIEN, 53, Zeekant, The Hague. June 30, 1930, No. 19862. Convention date, July 3, 1929. Addition to 212,250, [Class 56, Glass]. [Class 56.] Delivering molten metal. Relates to the method of delivering molten glass to a rolling apparatus, as described in the parent Specification, in which a pot is tilted about an horizontal axis that passes through or close to the pouring-edge of the pot. According to the present invention, the shaft bl of the fork b which grips the pot a is secured to two segments f which are supported on guide rollers d in the frame c of a pot crane. The axis X of the segments passes through or close to the pouring-edge of the pot. Thus, when the segments are turned by a motor l, the pot rotates about its pouring-edge.
Patent GB-577909-A (GB)
Title: Improvements in or relating to high frequency induction heating apparatus
IPC: H05B6/04
Filed: 1943-11-29
Abstract: 577,909. Valve generating circuits. INDUCTION HEATING CORPORATION. Nov. 29, 1943, No..19903. Convention date, Nov. 11, 1942. [Class 40 (v)] [Also in Group XXXV] In order to combine the outputs of two independently powered vacuum tube oscillators for supplying a high frequency heating load weach oscillator, as shown in Fig. 1, having a tank circuit comprising a condenser 24, inductance 25 and primary winding 30 of an external coupling transformer for the load coil 32-the two tank circuits are formed into a single series circuit coupled with both tubes. For this purpose the external coupling transformers 29, 29' are connected together and to the remainder of the composite tank circuit as shown in Fig. 2. Their secondary windings 31, 31' may comprise separate load coils or they may be in series with a single load coil as shown. Further pairs of oscillators arranged as in Fig. 2 may also supply power to the circuits containing the work coil.
Patent GB-678290-A (GB)
Title: Improvements in or relating to the manufacture of collapsible containers from flexible wrapping materials
Inventor: OSWIN CHARLES ROBERT
IPC: B31B19/00
Filed: 1949-07-28
Abstract: 678,290. Paper &c. bags. BRITISH CELLOPHANE, Ltd. July 24, 1950 [July 28, 1949], No. 19903/49. Class 94(ii) In making bags or like collapsable containers from a transversely cut, permanently creased flexible tube the inside surfaces of which have a tendency to stick together when the collapsed container is stored under pressure, the tube before being cut to bag lengths, is reformed by giving it temporary longitudinal creases, at least acrcss the parts at which subsequent severance takes place, and at a distance of “ inch or more from the permanent creases and parallel thereto, the thus reformed tube being flattened and then severed along a line which, for at least a part of its length, makes an angle of less than 85 degrees with the permanent creases. Afterwards the lengths are refolded to their permanent creases and the bottom ends folded and sealed. Fig. 1 shows an example of the three steps a, b and c in making a bag from a tubular blank which is flattened along its permanent creases A and B, reformed along temporary creases A<SP>1</SP> and B<SP>1</SP>, and cut along a line XY at an angle of 80 degrees to the longitudinal axis, and finally re-folded along the permanent creases A and B. The resultant overlap 11 facilitates the separation of the walls of the container. Instead of a linear cut such as X Y an arcuate cut may be made between the temporary longitudinal creases of the flattened tube, so that when re-folded along its permanent creases a pair of ears 21, 22, Fig. 2c. are obtained. Alternatively, a pair of intersecting linear cuts at 70 degrees to the lines of temporay longitudinal creasing may be provided. The reforming along temporary longitudinal creases and subsequent cutting may be performed manually or automatically. Detailed examples of operations upon tubes of different dimensions and various materials are described in the Specification. The materials include seamless regenerated cellulose tubular casing, polyvinylidene chloride tube formed by folding a strip of that material, polyethylene-polyisobutylene mixture in the form of a permanently creased tube, and thermoplastic material consisting of a polymer or interpolymer of a compound or compounds containing an ethylenic bond &c. Specification 528,368 is referred to.
Patent GB-795998-A (GB)
Title: Improvements in or relating to carbon brushes
IPC: H01R39/58
Filed: 1956-06-27
Abstract: 795,998. Brushes for dynamo - - electric machines. SCHEID, E. MITTELSTEN- [trading as VORWERK & CO.]. June 27, 1956 [June 29, 1955; Feb. 1, 1956], No. 19924/56. Class 35. A device for withdrawing a worm brush consists of a cap 2 of soft material, e.g. plastic, resting on shoulders 4 on the brush 1. The brush is drawn upwards against the cap by a spring 12 acting on a hollow bolt 7 secured into the brush. When the brush is worn down the shoulders break away to the shape 15, thus allowing the brush head 3 to be withdrawn. Spaces 17 may be cut in the cap to prevent jamming. Alternatively, the brush head may be recessed. Contact between the brush-shoulder and cap may be reduced to points by suitable cutting away.
Patent GB-128499-A (GB)
Title: Improvements in Stockings & Socks.
Inventor: GROSE JOHN GILBERT
IPC: D04B1/26
Filed: 1918-12-03
Abstract: 128,499. Grose, J. G., and Grose, M. Dec. 3, 1918. Knitting, methods of.-A spiral rib or thread is formed in stockings or socks by first knitting five rounds of groups of five plain and one purl stitches. The next round is started with six plain stitches; the remainder of that round and the next four being then formed as the first set were. The process is continued in this manner, each fifth round being started with an additional plain stitch.
Patent GB-518819-A (GB)
Title: Improvements in or relating to petrol supply pumps for internal combustion engines
IPC: F02M59/14
Filed: 1938-07-06
Abstract: 518,819. Fuel and oil pumps. SCOTT MOTORS (SALTAIRE), Ltd., and CULL, W. July 6, 1938, No. 19973. [Class 102 (i)] In a pump of the diaphragm or bellows type used upon internal combustion engines for pumping petrol to the carburetter, the diaphragm 1 is connected to a pump plunger 4 which injects a predetermined quantity of oil into the petrol in the discharge chamber 3 at each suction stroke of the diaphragm. The delivery stroke of the diaphragm is effected by a helical spring 7, whilst the plunger 4 may be reciprocated by a solenoid or like electrical means or by a lever 5 and cam 6. The oil enters an inlet 10, provided with a spring-loaded non- return ball valve 9, and is forced along the bore 11 of the plunger 4 and injected into the chamber 3 through ports 13 which are preferably disposed tangentially. Additional agitation of the mixture may be effected by means of a vaned disc 12, and by arranging the petrol inlet at the lowest point, and the mixture outlet at the highest point, of the chamber 3. In one modificaion, the oil is supplied under pressure and controls the delivery of the diaphragm; in another the diaphragm and plunger are operated by separate and independently adjustable cams; and in a third the two strokes are controlled by varying the effective lengths of two operating levers.
Patent GB-887380-A (GB)
Title: An improved machine for the manufacture of ice confectionery
IPC: A23G9/22
Filed: 1960-06-07
Abstract: 887,380. Ice-cream and like freezers. CONWERK MASCHINEN-UND APPARATEBAU A.G. June 7, 1960 [Oct. 16, 1959], No. 19995/60. Class 29 An on-off control 16 for motor 8 of a compression refrigeration system in an ice-cream freezer is operated by current sensitive devices in the circuit of the drive motor 6 for a screw stirrer-conveyer 4. The drive motor 6 responds to variation in the plasticity of the cream during freezing in cylinder 2 by changes in its electrical consumption which operate switches 13, 14 controlled by temperature responsive bi-metallic strips 12, 11, the heaters of which are connected in series with the motor 6. Switch 18 is used to bring either switch 13 or 14 into the circuit of relay coil 15. In addition to thus providing two separate consistencies for the ice-cream, one bimetallic strip has a regulating screw for continuously varying the consistency. A heater 20 is driven by a separate motor to foam the cream before it passes through cylinder 2 which is cooled by evaporator 10.
Patent GB-235423-A (GB)
Title: Machine for inserting washers in rubber heel blanks
IPC: B29D99/00
Filed: 1924-08-23
Abstract: 235,423. Marks, E. C. R., (Lawson- Whitehead Co.). Aug. 23, 1924. Moulding boots and shoes.-Comprises a machine for automatically loading a rubber heel blank with nail &c., washers so positioned as subsequently to engage the washer pins in the moulds. As shown, blanks B are transferred from a magazine 26 by an intermittently-rotating carrier 24 and positioned between a bottom die 3 and an upper die 5 carrying plungers 7 adapted to embed washers w supplied automatically through shoots 52 and passages 84 in the die 5. The washers may be completely embedded or only partly as by means of prongs thereon. The plungers 7 are carried by a member 10 slidably engaging the head 12 of a screw 13 adjustably connected to a block 14 reciprocated by a crank on the main shaft 21. The blanks B are smaller than the apertures in the plate 24 and are correctly positioned between the dies 3, 6 by centrifugal force and by a spring plunger 43 engaging the bottom of the blank. Washers are automatically fed to the shoots 52 from a pair of inclined hoppers 51 within each of which rotates a selector plate 56, Fig. 14, furnished with radial slots 57 adapted to select a number of washers. As the plate 56 rotates, the washers slide to the inner ends of the slots and the innermost are separated by a stationary guard plate 70 and positioned over a shutter 64 which is withdrawn at appropriate intervals by pins 68, on the plate 56 engaging a cam 66 to deliver the washers singly into the upper ends 62 of the shoots 52. Sleeves 88, Fig. 6, surrounding the plungers 7 are operated therewith through a lostmotion connection 92, 90, so that a washer is deposited upon the blank beneath each plunger. The die 5 is rigidly connected to a plate 8 held between guides 100, 101 by a latch pin 102. By withdrawing the pin 102, the plate 8 with its die 5, plungers 7 and sleeves 88 can be withdrawn bodily and replaced by another carrying differently-disposed plungers &c. To assist the embedding operation, the plungers are grooved at their lower ends and the die 3 is apertured at 4 beneath the plungers.
Patent GB-1500526-A (GB)
Title: Electric circuit interrupting device
IPC: H01H71/74
Filed: 1975-05-13
Abstract: 1500526 Automatic circuit-breakers WESTINGHOUSE ELECTRIC CORP 13 May 1975 [20 May 1974] 20093/75 Heading H1N An automatic circuit-breaker trip mechanism has a lever 49 linking its bimetal overload means 39 with a latch plate 33 and the pivot means 53 for the lever 49 is adjustable toward and away from the plate 33 to set the overload tripping current. The three-phase unit has a heater conductor 43 for each bimetal 45 and the bimetals bear on a common cross-bar 47 which is pivoted at 63 and is biased by a spring 65. A projection 67 on the bar 47 bears on one end of the lever 49 and the other end of the lever 49 engages in the slidable plate 33 which is movable to disengage a pivoted arm 21 from a bell-crank 19 normally retaining the circuit-breaker latch 11. The pivot means 53 is mounted on a rod 71 having a projecting pin 79 extending into a groove 77 in a rotatable knob member 73, 75 which can be rotated to adjust the position of the pivot means 53.
Patent GB-364600-A (GB)
Title: Improvements in or relating to fuel atomisers for combustion engines
IPC: F02M61/10
Filed: 1930-07-02
Abstract: 364,600. Fuel injectors. CLERGET, P., 38, Rue Boileau, Paris. July 2, 1930, No. 20113. Convention date, July 5, 1929. Void [Published under Sect. 91 of the Acts]. [Class 7 (iii).] In a fluid - pressure actuated fuel injector the spraying nozzle is formed in two portions 4 and 13, fitted concentrically in the body 1, the inner portion 13 carrying a seating 18 for a hollow, spring- loaded needle valve 11. The latter is carried within a bush 6 around which a fuel space 22 is provided. To ensure the correct alignment of the members 6 and 13 they are centred by spigots 9a and 5 respectively. The fuel entering at 23 passes from the annular space 22 through flutings in the lower screwed portion 7a of the bush 6 to a chamber 19 separating the adjacent ends of the member 4 and 6, whence it flows to the valve seat through grooves formed on the inner surface of the member 13. On the opening of the valve the fuel passes through an axial passage and a number of radial passages into a circumferential groove and thence to the atomizing channels which may be formed on the conical coacting surfaces of either member 4 or 13 or both. The exposed surfaces of these members are recessed as shown to provide a circular ridge adjacent to the outlet of the atomizing channels ; the latter may be straight or helical and convergent or divergent.
Patent GB-1232748-A (GB)
IPC: C07C275/64
Filed: 1969-04-21
Abstract: 1,232,748. Phenylureas. CIBA-GEIGY A.G. 21 April, 1969 [19 April, 1968], No. 20209/69. Heading C2C. [Also in Division A5] The invention comprises compounds of formula wherein X represents a hydrogen or halogen atom, Y represents a sulphur or oxygen atom, R 1  represents a lower alkoxy-lower alkyl, lower alkylthio-lower alkyl, aryloxy-lower alkyl, arylthio-lower alkyl, lower alkoxy-aryl, lower alkylthio-aryl, lower aralkyl or cycloalkyl group containing up to 8 carbon atoms and R 3  represents a lower alkyl, lower alkenyl, lower alkinyl or lower halogenalkenyl group, or R 1  represents an aryl group and R 3  a lower alkenyl, lower alkinyl or lower halogenalkenyl group and R 2  represents a hydrogen atom or a lower alkyl group. By the term " lower " as applied to alkyl, alkenyl, alkinyl, alkoxy, alkylthio, halogenalkenyl, and the alkyl part of aralkyl is meant a residue which contains up to 4 carbon atoms. These compounds may be prepared by reacting a compound of formula with a compound of formula wherein R 1 , R 2 , R 3 , X and Y have the significances indicated above, one of the two groups A and B represents an amine, whilst the other represents a urethane, a carbamoyl halide, a urea group or an isocyanate or isothiocyanate group, the latter case necessitating a posttreatment with an oxidizing agent, and R 4  and R 5  either have the significance of R 2  and R 3  or each represent a hydrogen atom and are converted into R 2  and R 3  by appropriate posttreatment. Compounds in which X is chlorine; Y is sulphur or oxygen; R 2  is -CH 3  or hydrogen; R 3  is -CH 3 , n-C 9 H 9 , or CH#C-; and R 1  is CH 3 OCH 2 -, C 2 H 5 OC 2 - H 4 -, CH 3 OC 2 H 4 -, C 2 H 5 OCH 2 -, n-C 9 H 9 OC 2 - H 4 -, CH 3 SCH 2 -, CH 3 SC 2 H 4 -, C 2 H 5 SC 2 H 4 -, C 6 H 5 -CH 2 -, or C 6 H 5 -, are prepared in Example I.
Patent GB-828375-A (GB)
Title: Improvements in or relating to stretching, contracting, or like curved rollers
IPC: B65H23/025
Filed: 1957-06-27
Abstract: 828,375. Stretching and contracting webs transversely. HANSSEN, P. June 27. 1957 [June 30, 1956]. No. 20251/57. Class 100(1) A curved roller for transversely stretching and contracting webs comprises a flexible metal tube 2 formed with slots 8a transverse to the longitudinal axis of the roller and extending part of the way around the circumference and right through the thickness of the tube. As shown, the slots are arranged equidistantly along the longitudinal axis, adjacent slots being displaced relatively to one another by 90 degrees. The slots terminate in circular end portions 8. The tube 2 is supported by bearing supports 3 each having a ring 3a, secured to a fixed shaft 1 and ball bearings 3b fitting within a ring 3c. The outer surfaces of the rings 3c are surrounded by flexible tyre 3d. A covering 4 of flexible material is secured to the tube 2 by rings 9. The curvature of the shaft 1 is adjustable by means of a stay 12 engaging a longitudinal groove 11 in the core, the ends of the stay 12 having threaded ends carrying adjusting nuts. Transverse incisions 7 aligned longitudinally of the shaft 1 permit the shaft to be curved as required.