baber/WOPTO huggingface dataset:
Patent GB-256518-A (GB)
Title: Apparatus for indicating rectilinear displacements of a movable body
IPC: G01F23/50
Filed: 1926-03-19
Abstract: 256,518. Valletti, S. March 19, 1926. Linear - dimension gauges. - The rectilinear displacements of a movable member, such as the float of a liquidlevel indicator, are indicated by moving another member until it makes contact with it, and indicating the position of the second-mentioned member. A float 2 is adapted to slide freely on a vertical rod 1, and a helical blade 3 mounted on a pivoted rod 6 is turned until it comes into contact with the float. The rod 6 carries a pulley 7 over which passes a cord 8 having a counterweight 12 at one end and a handle 9 at the other end by which the blade 3 is actuated. The extent to which the blade 3 must be turned to come into contact with the float depends on the height of the latter, and is indicated by the pointer 10. In a modification, Fig. 2, a pivoted plate 4 is so mounted that when the handle 9 is pulled the plate moves parallel to itself to bring its inclined edge into contact with the float 2, and the movement of the plate is indicated as before. In another modification, the inclined member may be pivoted at one end only.
Patent GB-526188-A (GB)
Title: New and improved method and apparatus for making coated paper
IPC: D21H23/40
Filed: 1939-03-09
Abstract: 526,188. Coating paper. CHAMPION PAPER & FIBRE CO. March 9, 1939, No. 7707. Convention date, Aug. 27, 1938. Addition to 499,732. Drawings to Specification. [Classes 96 and 140] In coating paper as disclosed in the parent Specification, the excess liquid coating mixture is wiped off as the paper passes about a roll, by a doctor adjustable circumferentially about the roll, of material, such as natural or synthetic rubber, which yields by compression or flexure before it disturbs the " filter-cake " coating. The web may be coated at any stage in the papermaking machine, or subsequently thereto. Both sides of the paper may be coated.
Patent GB-1252606-A (GB)
Title: Pressure-sensitive hot-melt adhesives
Inventor: RUSSELL THOMAS E
IPC: C09J153/02
Filed: 1969-06-24
Abstract: 1,252,606. Pressure-sensitive adhesive coating. FLINTKOTE CO. 24 June, 1969 [25 June, 1968], No. 7733/71. Divided out of 1,252,604. Heading B2E. [Also in Division C3] Substrates are coated, particularly from the melt with a composition comprising (A) a modified or unmodified rosin or rosin ester, (B) a rubbery block copolymer of styrene and butadiene or isoprene and (C) a polyterpene resin. In Examples, the substrates are vinyl asbestos tiles, asbestos cement, plywood and stainless steel.
Patent GB-706663-A (GB)
Title: Formaldehyde treatment
Filed: 1952-03-26
Abstract: A process for the purification of an aqueous formaldehyde solution comprises subjecting the solution to extraction with methylene chloride.  Preferably aqueous formaldehyde obtained by the vapour phase partial oxidation of aliphatic hydrocarbons is first steam distilled and low boiling constituents are stripped from the overhead product which is then concentrated under vacuum.  In an example an aqueous formaldehyde solution obtained as a product of the vapour phase partial oxidation of butane is submitted to the above preliminary treatment, the steam distillation being carried out under pressure, and using the plant shown in the diagram is passed through inlet 1 into a packed extractor 2 whilst methylene chloride is introduced through line 3, the counter-current extraction being carried out at atmospheric or elevated pressure.  The extracted solution leaves through line 4 and methylene chloride through line 5. Methylene chloride is stripped from the aqueous formaldehyde in <PICT:0706663/IV (b)/1> distillation column 6 and the desired product is removed from p  reboiler 7 via line 9.  Methylene chloride removed overhead from column 6 is condensed in condenser 8 and recycled with methylene chloride from the base of extractor 2 through a still 12 and condenser 14 with partial reflux, to extractor 2.  Make up methylene chloride may be introduced into the system through line 18 or directly into still 12.  Separated impurities are removed from the base of reboiler 13 through line 15.  The light transmissions after adding sulphuric acid and the bromine numbers of purified and unpurified formaldehyde solutions are compared. The conversion of the purified formaldehyde to hexamine and the use of other solvents including hydrocarbons such as pentane, esters such as n-propyl acetate and long chain alcohols such as 2-ethyl hexanol in the extraction of aqueous formaldehyde are mentioned.
Patent GB-697948-A (GB)
Title: One-way clutch
IPC: F16D41/07
Filed: 1952-03-26
Abstract: 697,948. Free-wheel clutches. FORMSPRAG CO. March 26, 1952 [April 23, 1951], No. 7791/52. Class 80 (ii). In a free-wheel clutch comprising sprags C engaging between cylindrical races A, B, one or other of the race-engaging surfaces of each sprag has a channel E to receive an encircling ring F which maintains the sprags in parallelism. As shown in Figs. 1, 2, the channels E are in the outer surfaces of the sprags, and energising garter springs D engage inclined notches C' in the ends of the sprags. As shown in Fig. 6, the channels E are in the inner surface of the sprags and accommodate also the single garter spring D, while the ring F is thicker to engage also a channel G in the race A, so as to hold tne sprags against axial movement. The ring F may have axial projections extending between the sprags so as to space the latter. The sprags may have channels E in both their inner and outer surfaces so that an internal or an external ring F may be fitted and expanding or contracting garter springs may be used.
Patent GB-184521-A (GB)
Title: Platform lever mechanism for scales
IPC: G01G19/02
Filed: 1921-03-11
Abstract: 184,521. Marks, E. C. R., (Toledo Scale Co.). March 11, 1921. Weigh-bridges; levers; bearings. - In a weighing-scale a platform structure is supported on each of a plurality of levers by t saddle block resting on the load pivot of each lever, and by a platform support which is suspended from this block by means of a plurality of parallel rods, each of which is capable of a universal rockable movement both in respect to the block and the support. The main platform levers 8, Fig. 1, are fulcrumed on pivoted bearings at the corners of a concrete pit and are coupled to a scale beam end to a dial 29 by levers 21, 22. The adjacent ends of the levers 8 are provided with adjustable nose-irons 15 for regulating the lengths of the levers. The nose-irons are forked and are provided with inwardly-directed knife-edges 20, Fig. 10. The knife-edges rest upon swinging U-bolts 40 depending from a block 35 which rests upon the knife-edge of the lever 21 through the intervention of a pivoted bearing-block 37. The bottoms of the U-bolts 40 are connected by a plate 43. The block 35 is rigidly secured to the corresponding block at the other side of the lever 21 by means of a bolt 36 which passes through a gap in the lever. A similar connection is used between the adjacent ends of the levers 21 and the lever 22. The platform is supported on the levers 8 in the manner shown in Figs. 4 and 5, wherein a double yoke 61 straddling the lever 8 is pivoted to the platform by a pin 68 and stands on a plate 60. The presence of the pivot pin 68 allows the platform joists to flex without displacing the supports described below. The plate 60 is supported by four discs 59 having knife-edges at each side arranged at right-angles and resting on bearing-blocks 58 suspended by four rods 57. The rods 57 are supported by bearing-blocks 56, knife-edged discs 54, and saddle blocks 50, united by a rod 53 passing through a gap in the lever, the saddle blocks resting on a knife-edge 13 projecting from the lever. By this arrangement the rods 57 are permitted universal movement at both ends. In a modification two rods 57 only are used and the knife-edge 13 is arranged in a vertical gap in the lever. The height of the platform may be adjusted by screwing the rods 57 up or down relatively to the bearing-blocks 56, 58.
Patent GB-1423404-A (GB)
Title: Facsimile system scanner
IPC: H04N1/405
Filed: 1973-02-16
Abstract: 1423404 Copying by scanning XEROX CORP 16 Feb 1973 [22 Feb 1972] 7820/73 Heading H4F The light beam produced by a laser 11 is used to scan a document 17, to derive facsimile signals from an elongate photodetector 26. A galvanometer 20 having an oscillating mirror 21 is used to provide the line scan, the frame scan being produced by movement of document 17. The intensity of the light beam from the laser is controlled by a circuit 31 to be of high intensity during the line scans and low intensity during the line flyback periods. Feedback control circuitry 32 stabilizes the laser output during the line scan.
Patent GB-756595-A (GB)
Title: Improvements in or relating to contact converters
Inventor: KLIESCH GUNTER
IPC: H02M7/40
Filed: 1954-03-18
Abstract: 756,595. Rectifying. SIEMENS-SCHUCKERTWERKE AKT.-GES. March 18, 1954, No. 7926/54. Class 38 (2). A contact rectifier having switching chokes D supplies during starting an initial basic load G connected to the phases between the switching chokes D and the contacts K, through auxiliary rectifiers V. Thus, there may be no overlap of closure of the main contacts K during starting, the initial load current being sufficient to allow the switch chokes to reach their normal magnetization cycle. A control arrangement may then adjust contact operation times to suit a small main load which can be switched in without disturbance by closure of main switch H. Switch A is then opened to interrupt the initial load current, or dotted connections may be made so that basic load G is connected across the D.C. lines and rectifiers V are connected as bypasses across contacts K. In a modification an initial load is connected between switching-in contacts and the main switching contacts of each phase of a double star circuit with an interphase transformer, and the centre point of the interphase transformer, Fig. 2 (not shown).
Patent GB-943544-A (GB)
Title: Heat-sensitive copying material
IPC: B41M5/42
Filed: 1960-03-07
Abstract: 943, 544. Thermographic copying materials. KALLE A. G. March 7,1960 [March 14, 1959], No. 7941/60. Drawings to Specification. Heading G2C. A thermographic copying material comprises a transparent support having on one side an opaque coating containing a light-coloured pigment and on the other side a heat-sensitive coating. A transparent protective coating may be applied over the heat-sensitive coating. Copying of an original may be effected by reflex exposure with the heatsensitive layer of the thermographic material uppermost. The transparent support may be of transparent paper, cellulose, cellulose ester, or a plastic, the opaque coating may be of fine particles of organic or inorganic pigment materials in a smooth film-forming binder, and the heat-sensitive layer may be of the colour-forming type, e.g. involving a metal salt of an organic acid and an aromatic polyhydroxy compound or thiourea, comprising a transparent film-forming binder. Specification 829, 001 is referred to.
Patent GB-609433-A (GB)
Title: Improvements in or relating to hand starting mechanism for internal combustion engines
IPC: F02N5/04
Filed: 1946-03-14
Abstract: 609,433. Turning-gear. FOWLER & CO. (LEEDS), Ltd., J., and HOWARD, A. C. March 14, 1946, No. 7954. [Class 7 (v)] In hand starting means for internal-combustion engines an auxiliary fly-wheel 10 connectable with the engine fly-wheel by means of a pinion 1, on an axially movable shaft 2, is disengaged when the engine fires by the action of a spring 8 controlled by centrifugally-operated catches 13. In operation, a lever 19 is actuated to advance the shaft 2 and engage the pinion 1, thereby compressing the spring 8 and allowing the catch weights 13'to engage with an abutment surface 18 on an axially fixed sleeve, thereby holding the pinion in engagement. At a predetermined speed the catches are centrifugally released whereupon the spring 8 withdraws the pinion and causes the immediate braking of the fly-wheel by a friction disc 22.
Patent GB-416499-A (GB)
Title: Improvements in or relating to the manufacture of goods of rubber or similar material
IPC: C08J9/00
Filed: 1933-03-16
Abstract: Sponge or cellular rubber &c. articles are made from aqueous dispersions by solidifying the dispersions by subjecting them to low temperature, and vulcanizing under such conditions that escape of the contained water is prevented.  A water-soluble coagulant, e.g. sodium or potassium silico-fluoride, calcium chloride, magnesium sulphate, zinc sulphate, in quantity insufficient to produce coagulation at room temperature may be added to the dispersion.  The freezing may take place in a mould, as may also the vulcanization.  The degree of porosity may be controlled by varying the concentration of the dispersion.  Special effects may be obtained by the addition to the dispersion of crushed ice or snow, or of swelled colloids as gelatine, or of collapsable solids such as silicic acid jelly. During the early stages of freezing, the dispersion may be agitated. On completion of the vulcanization, the water may be removed by squeezing, or centrifuging.  Specifications 219,635 and 290,313, [both in Class 70], are referred to.
Patent GB-325716-A (GB)
Title: Improvements in vacuum jacketed containers for food
IPC: A47J41/00
Filed: 1929-03-11
Abstract: 325,716. Faine, T. F. G. March 11, 1929. Cold and heat retaining vessels.-A vacuumjacketed vessel is divided into separate compartments for food &c. by removable partitions engaging grooves in the inner wall. The outer wall of the jacket is thicker than the inner wall I. Horizontal disc-like partitions e may be fitted in grooves c, or vertical partitions alone may be used, or vertical partitions in sections e', e<2> may fit in grooves h in the disc e and in the inner wall. A screwed cover having a cork or like inner lining may be fitted over the neck N of the vessel. The partitions may be of glass, metal, or rubber, and may have rubber edges so that they may be forced into position. The vessel may be of glass, earthenware, enamel ware, or of reinforced paper.
Patent GB-396489-A (GB)
Title: Improvements in scrubbers for use in the treatment of gases
IPC: B01D45/08
Filed: 1932-03-19
Abstract: 396,489. Treating gases with liquids. LONDON POWER CO., Ltd. and PEARCE, S. L., Ergon House, Horseferry Road, London. March 19, 1932, No. 8273. [Class 55 (ii).] A scrubber for washing or purifying gases with liquids in counter-flow or not comprises a tower a containing a series of boards b in superposed spaced layers, one layer sloping downwards in one direction while those in the next layer slope in the opposite direction, and so on through the series, each board having along its upper edge a fillet or strip c set substantially at right-angles to the board so as to catch falling liquid and lead it to the underside of each board ; the outer upper edge of the board or the outer lower edge of the fillet is rounded. The boards or plates may be of metal, each bent over at its upper edge to form a flange. The boards may be serrated at their lower edge.
Patent GB-435123-A (GB)
Title: An improved method of colour photography
IPC: G03C7/04
Filed: 1934-03-16
Abstract: 435,123. Colour photography. WEBERLING, H., 88, Lindwurmstrasse, Munich, Germany. March 16, 1934, No. 8274. [Class 98 (ii)] A negative is exposed through a separate multicolour screen in a dark slide, the negative and screen being positioned against stops during exposure; a multicolour screen pattern is printed on paper, the paper being positioned against other stops during printing of the screen pattern thereon; and, after development of the negative and the application of a sensitizing emulsion to the paper, the paper and negative are positioned against other stops in a printing out frame. Apparatus for carrying out this method comprises a dark slide, Fig. 1, comprising stop pins b against which the negative and screen are pressed by longitudinally bifurcated springs e, and a printing out frame, Fig. 5, comprising a frame f slidable on studs h on a base plate g, stop pins b\ g<1> being provided on the frame f and base plate g, respectively, for positioning the negative and paper. The pins b<1> are arranged to correspond with the pins b and pins corresponding in arrangement with the pins g<1> are provided in the printing press. A suitable multicolour screen pattern, Fig. 6, has blue parallel rulings k with interlineated red and green dots l, m.
Patent GB-535752-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B17/42
Filed: 1940-05-08
Abstract: 535,752. Roll-film cameras. KODAK, Ltd. May 8, 1940, No. 8274. Convention date, Aug. 12, 1939. [Class 98 (i)] In a roll-film camera having latch means actuated by the movement of the film which alternately latches the film-feeding mechanism and the shutter release so that the two can be operated only alternately, the latch means is movable by means independent of that actuated by the movement of the film to the position in which the shutter actuating mechanism is unlatched, so that without winding on the film and without manually holding the latch means in this position, the shutter may be operated a second time when so desired. As shown, the film engages a pair of measuring wheels 49, and when being wound rotates them and a gear 47 which is on the same shaft and drives through an idler 45 a gear 44 loosely mounted on the winding spindle. The gear carries a ring 50 having a gap through which, at the end of the winding operation, the nose 34 of a lever 32 passes and engages a ratchet wheel 35 on the winding spindle, so locking the winding spindle. The lever 32 has a slot 31 in which engages a pivot pin 30, so that the slight final movement of the gear 44, after the nose 34 has engaged it, moves the lever 32 to the right to the limit allowed by the slot, thus disengaging a lug 58 on the lever from beneath a flange 56 on the shutter release knob 55, so that the latter can be depressed to operate the shutter. On depression of the knob, an inclined edge 60 on the flange 56 engages an inclined lug 61 on the lever 32, which is thus rocked about the pivot 30 to withdraw the nose 34 from the gap in the ring 50. The lever is then moved to the left by a spring 38, so that on releasing the button 55 the nose 34 does not re-enter the gap in the ring 50 and the lug 58 again moves under the flange 56. The film may now be wound on, the shutter release being locked until this operation is completed. To allow successive operations of the shutter without winding the film, a lug 62 on the lever 32 projects through a slot in the top of the camera, where it is located between the front and rear components of a folding viewfinder, Fig. 5. By moving this lug to the right, the lever 32 is brought into the position in which the shutter release is free to be operated.
Patent GB-579493-A (GB)
Title: Improvements in or relating to stretchers
IPC: A61G1/02
Filed: 1944-05-02
Abstract: 579,493. Collapsable stretchers with sledge runners. DUFF, D. G. May 2, 1944, No. 8289. [Class 108 (i)] A folding stretcher has a tubular metal frame furnished with a pair of sledge runners which also serve as feet for the stretcher, at least one road wheel adapted to be secured in various positions on the frames, a removable textile fabric hammock part unitary with means for securing the patient on the stretcher and hooks for attachment of splints to prevent movement of a fractured lower limb. A pocket is provided in the hammock for first aid equipment. The tubular carrying arms 11 with handle-stops 13 are spaced apart by stretcher bars. The down-turned legs of stretcher bar 20 have each an extension of reduced diameter which passes through a hole in the carrying arm 11 and is retained by a cotter-pin or bolt on one side and by a rivet or pin on the other. The stretcher bar 20 may be furnished with hooks to engage splints holding a fractured limb. The bar 26 is centrally hinged to permit folding and may be locked in the open position, while bar 27 pivots at one end about the upturned end of the sledge runner 23 and is detachable at the other end. A wheel 32 is journalled in a forked member 33 having a headstock 34 which may be secured in a socketed part 35 of a cross-bar 36 by a cotter pin. The cross-bar 36 may be releasably clamped to the runners 23 or to the arms 11. The ends of the fabric hammock 14, provided with pockets 42, are turned under the arms 11 and the two longitudinal edges 141 laced together by a cord 15 through spaced eyeletted holes. A piece of fabric 16 is stitched to one edge of the hammock to form a cover held by straps 18 and buckles 17 for the patient's torso. Further straps secure the patient's lower limbs and slings may be provided for lowering the stretcher down a declivity.
Patent GB-918107-A (GB)
Title: Improvements in or relating to methods of and apparatus for liquid-liquid counter-current extraction
IPC: B01D11/04
Filed: 1960-03-09
Abstract: 918,107. Mixer-settler apparatus. CERHA, K., NETREBSKY, F., and TESAR, A. March 9, 1960, No. 8296/60. Class 46. The heavier liquid in a liquid/liquid extraction column is fed in via pipe 4 while the lighter liquid is fed to the lower chamber through the Venturi pipe 8. Mixing takes place in the pipe 1 aided by baffles 10 and then separation into a lower layer 12 and a lighter upper layer 11. The lower layer is supplied to mixer 1 via pipe 3 while the upper layer overflows into pipe 1. The heavier liquid flows away to surge drum 13 while the lighter liquid flows continuously away via pipe 7.
Patent GB-685900-A (GB)
Title: Improvements in or relating to containers for fluids under pressure
IPC: F17C13/06
Filed: 1951-04-10
Abstract: 685,900. Storing gases under pressure SPARKLETS, Ltd., and NYE, E. H. April 10, 1951. No. 8303/51. Class 8 (ii). In a cylindrical container for storing fluids under pressure a puncturable sealing cap 7 and a jointing ring 8 are secured against an abutment located internally of a coaxial union member, e.g. a sleeve 4 fused to the container body by a ring 5, by an inwardly turned lip 6 of the sleeve 4. The latter fits over the neck 2, and the cap 7 abuts its end. In a modification the sleeve makes either a fused butt joint with the end of the neck or is fused to an internal shoulder thereof, and in both alternatives the cap supporting abutment is formed on the inside of the sleeve.
Patent GB-1520072-A (GB)
Title: Ball joint
IPC: F16C11/06
Filed: 1976-03-02
Abstract: 1520072 Ball joints ADWEST ENG Ltd 25 Feb 1977 [2 March 1976] 08327/76 Heading E2F A ball joint comprises a housing 5 in which ball head 6 is screw threaded at 8 inside a socket 1, and a locking member 10 which is first screw threaded at 11 into the socket (with an opposite handed thread to that used at 8) and is then deformed inwardly at at least one location 13 to engage in recess(es) 9. As shown two diametrically opposed recesses 9 can be engaged by a tool to screw the housing 5 into the socket and an inner edge of member 10 is polygonal to enable it to be screwed into the socket. The member 10 is formed of mild steel and has an inwardly directed flange which is locally deformed at 13 to engage the recesses 9. Socket liner 3 can be held in position by means of a nut engaging the housing 5, with a biassing spring acting between liner and bearing pad 4 (Fig. 5, not shown).