baber/WOPTO huggingface dataset:
Patent GB-443965-A (GB)
Title: Improvements in air cleaners
IPC: B01D39/18
Filed: 1934-09-04
Abstract: 443,965. Air filters. COTTON, E. J. L., (trading as BURGESS PRODUCTS CO.), Kirkby Road, Barwell, Leicester. Sept. 4, 1934, No. 25452. [Class 8 (ii)] In an air filter for an automobile, wood shavings are employed as the filtering material, the shavings being cut in such a manner as to leavo rough edges and projections and exposed pores. The shavings are cemented together by means of an adhesive, such as a solution of sodium silicate, and are afterwards treated with a viscous substance, such as lubricating oil. The shavings are formed into a cylindrical body 26, the ends of which are covered by discs 29, 30. The body 26 is clamped between end plates 32, 33 and is surrounded by a sleeve 52 of wire or perforated metal. The sleeve may be corrugated and a similar sleeve may be placed in the interior of the ring. The air enters through the sleeve 52 and passes to the carburetter through a pipe 37. The filter may be enclosed by a bell 50 lined with sound insulating material. Sound insulating material may be placed beneath the plate 33 instead of or in addition to the bell 50. The body 26 may comprise an outer more porous layer and an inner denser layer.
Patent GB-699173-A (GB)
Title: Travelling wave tubes
Inventor: BUNEMAN OSCAR
IPC: H01J25/44
Filed: 1949-10-04
Abstract: 699,173. Travelling-wave tubes; magnetron amplifiers. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 4, 1950 [Oct. 4, 1949], No. 25501/49. Class 39(i) In a travelling-wave tube in which the electrons travel down a waveguide in the direction of wave propagation transverse to crossed electric and magnetic fields, the electric field is established between opposite walls A, B of the waveguide and the electron emitting surface C lies parallel to those walls and opposite the more positive wall A; with an appropriate choice of the field values the electrons are deflected into a dense beam passing down the waveguide, the space charge of the beam being such as to produce a transverse velocity gradient. The outer electrons alongside the more positive wall have the higher velocity. Under these conditions the waveguide functions as a loaded waveguide for the propagation of waves at a low velocity comparable with that of the electrons, the waves' being amplified in travelling to the output coupling. The tube may be operated as a generator. As described, the waveguide is formed as a box with a recess formed in the box at one end to accommodate a cathode structure having an internal heater. This structure is supported in the recess by its leading-in wires which are sealed into short tubes extending from the box. The positive electrode is a flat plate secured with interposed sheet insulation on the box.
Patent GB-209377-A (GB)
Title: Combined attache case and portable stool
IPC: A45C9/00
Filed: 1923-10-15
Abstract: 209,377. Watling, R. G., Watling, L. H., and Fachney, W. H. Oct. 15, 1923. Fittings, external; strengthening by corrugating.-An attache case adapted to serve also as a portable stool is formed of sheet aluminium or similar metal and has folding legs of sheet metal with turned-in edges, controlled by toggle-bars m hinged to angle pieces o disposed within the depending lower edges of the sides under the bottom d, the legs being adapted to fold flat under the bottom, where they are held in position by a bolt or catch device slidably mounted on a rod h engaging bayonet-slots k, Fig. 5, in their turnedin end portions. The lid is strengthened internally by corrugated metal e, Fig. 7.
Patent GB-1497551-A (GB)
Title: Zoom lens systems
IPC: G02B15/22
Filed: 1975-06-17
Abstract: 1497551 Zoom lenses CANON KK 17 June 1975 [17 June 1974] 25723/75 Heading G2J A macro zoom lens is adjustable to macro at wide-angle or telephoto settings and comprises a focusing lens I, a variator lens II, a compensator lens III and a relay lens IV. Lenses II and III are simultaneously movable to effect zooming and macro, the following relationships being satisfied:- e 1  min # e 1  macro, e 2  min # e 1  macro and  e 3  min # e 1  macro where e 1  is the distance between I and II, e 2  is the distance between II and III and e 3  is the distance between III and IV and e min  is the minimum distance during normal zooming and e macro is the distance when the lens is set to macro.  Fig. 2 shows three ways of achieving macro for a first embodiment of lens construction in which I is positive, II negative, III positive and IV positive. In a second embodiment Figs. 3 and 4 (not shown), I is positive, II negative, III negative and IV positive, there being four ways of achieving macro. Numerical data are given for two Examples.
Patent GB-150960-A (GB)
Title: An apparatus for taking and projecting either photographic or moving pictures
IPC: G03B19/18
Filed: 1920-09-09
Abstract: 150,960. Giraud, E. G. M. Sept. 10, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Kinematograph ap paratus.-A kinemato graph camera, capable of use for single expo sures, or as a projector has means for varying the area of the film ex posed or projected; a single or multiple can operates through levers to actuate the film feeding means and the shutter. As shown walls g, h pivoted at and j behind the lens aperture c extend to the film, and are ad justable by a pinion o engaging toothed sectors m, n attached to them so as to vary the area exposed. A cam 5 having circular parts 6, 8 connected by inclined parts 7 actuates the feed sprocket 21 and the shutter, being driven by pinions 3, 4 from a handle 2 or a spring or other motor. The connexion between the cam and the sprocket 21 comprises a rod 11 carrying pins 9, 10 in engagement with the cam and pivoted on a lever 12 pivoted at 13. The sprocket has a cam 20 with projections 19 which are engaged by pins 17, 18 on arms 14, 15 separately pivoted on the lever 12 and connected by a spring 16. As the cam 5 is rotated, the rod 11 is moved alternately to right and left, the cam 20 and sprocket 21 being partly rotated at each movement. The cam 5 produces intervals of rest between the feed movements, and operates the shutter during the intervals. The shutter comprises two apertured pivoted blades which are connected by links to a rod 28 having pins 26, 27 engaging the cam 5. As the cam rotates the blades are caused to turn in opposite directions on their pivots and effect exposure. Single exposures may be effected by inserting pins in one of the recesses of a wheel 40 on the shaft of the cam 5. When the pin 37 is inserted, movement of the handle 2 permits the shutter to open and close before further movement is prevented by the pin, thus causing instantaneous exposure. The insertion of a pin 38 and a pin 37 or 39 permits time exposures to be made, and the insertion of all three pins causes the shutter to remain open, as required, when the apparatus is used for projecting lantern slides. The camera casing contains a feed spool d and a belt-driven take-up spool e, and a partition f isolates the mechanism from the main body of the casing. The pivoted walls g, h may be replaced by bellows, the cam 5 may be replaced by multiple cams of various forms or by an eccentric, and the pins 37, 38, 39 may be replaced by a single stop. When the apparatus is used as a kinematograph projector. larger spools may be carried externally on the casing and a lamp is provided behind the film.
Patent GB-878868-A (GB)
Title: Stabilised polyethylene compositions
Inventor: BURGESS ROBIN HENRY
IPC: C08K5/372
Filed: 1959-07-29
Abstract: A polyethylene composition comprises both a diester of a thiodialkanoic acid and a phenolic compound containing at least sixteen carbon atoms which is the product of condensation of one molecule of a C2-C6 aldehyde or one molecule of a C3-C6 ketone with two phenol molecules, each phenol molecule having an ortho or para-position free.  Aldehydes and ketones specified are acetaldehyde, propionaldehyde, butyraldehyde, isobutyraldehyde, valeric aldehyde, hexanol, acetone, methyl ethyl ketone, diethyl ketone, methyl butyl ketone and cyclohexanone.  Of the many phenols specified those preferred and exemplified are p-nonyl phenol, and 3-Me-6-tBu-, 3-Me-t octyl-, 2-Bu-4-Me-, 2, 6-diMe- and 2, 4-diMe-phenols.  Diesters disclosed are the lauryl, stearyl, benzyl, cinnamyl and cyclohexyl esters of b -thiodiproprionic acid and g -thiodibutyric acid.  The compositions may be formed in bulk or in a hydrocarbon liquid. Optional ingredients are ultra-violet light stabilizers such as carbon black, calcium or zinc soaps, pigments, dyes and fillers. Specification 525,737 and U.S.A. Specification 2,831,897 are referred to.
Patent GB-1256265-A (GB)
Title: Self-aligning feed roller
IPC: B65H9/14
Filed: 1969-05-21
Abstract: 1,256,265. Feeding sheets. XEROX CORP. 21 May, 1969 [24 May, 1968], No. 26017/69. Heading B8R. Sheets are separated from the top of a pile S, Figs. 7 and 9, and fed to a xerographic printing- machine by means of rotatable friction rollers 486, 485. The roller assembly is supported on an arm 496 secured to a sleeve 505 so as to be movable up and down, and the rollers are rotated by a belt 517. The rollers 485 are mounted on axially movable shafts 487 urged outwardly by a spring 492 against side guide members 445, 446, so that the rollers 485 are maintained near the sides of the sheets when the members 445, 446 are adjusted for sheet width. The arm 496 is formed in two parts 497, 498 connected by a tongue 501 and slot 500 allowing slight relative movement about the axis of the arm, whereby all the rollers can contact the pile regardless of pile deformation. Double feed is prevented by snubbers 480 carried on plungers 477 and engaging the top corners of the pile at the feed end. The guide members 445, 446 are movable towards and away from each other by rotating a hand-wheel 464, to accommodate sheets of different widths. The separator rollers are rotated through separate one-way clutches. Pile supports.-The pile rests on a tray 400 comprising a stationary plate 403 and a movable plate 404, having intermeshing fingers and recesses. The plate 404 can be pulled to the right to support long sheets, a switch 416 acting to change the printing-machine cycle correspondingly. The tray is raised continuously by a motor as sheets are separated, under the control of a limit switch SW-8, and is lowered for reloading, under the control of a limit switch SW-7, through the medium of gear trains 433, 432, 428, and a rack 427. Registering sheets.-The sheets are fed by the separator rollers to feed rollers 520, 521, Figs. 7 and 16, which are normally slightly separated, and against pivotal front stop fingers 555. After the sheet is registered, the rollers come together and the fingers are lowered, under the control of solenoids. The upper roller 520 comprises a metal core with a plurality of soft rubber layers therearound. The lower roller 521 comprises a plurality of short rollers 544.
Patent GB-322759-A (GB)
Title: Improvements in or relating to method of and apparatus for producing sheet glass
IPC: C03B13/04
Filed: 1928-09-11
Abstract: 322,759. White, A. E., (Mississippi Glass Co.). Sept. 11, 1928. Charging; charges, conveying.- Apparatus for making sheet glass is arranged to produce the sheet either in a continuous strip or in single sheets. In the former case, the sheet is carried through the leer at the same rate at which it is formed, and in the latter case, the sheets are rolled intermittently at a high speed and are passed directly on to a conveyer which carries them through the leer at a low speed. The apparatus comprises a tank furnace having a spout 2 provided with gates 3, 3<1>, sheet-forming rollers 4, 5, and conveyer rollers 8, 8<1> for carrying the sheet to and through a leer 9. The space between successive rollers increases with the distance from the rolling-apparatus, and the first section 8 consists of idle rollers while the remaining section 8', consists of rollers which are driven from the driving-shaft 14 of the rolling-apparatus. When the glass is to be formed in a continuous sheet, the gates 3, 3<1> are raised and act as skimmers, the rollers 8 being driven at the speed at which the sheet leaves the roll 4, 5. When sheets are formed intermittently, quantities of glass are admitted past the gates 3, 3' on to the rolls 4, 5, and the rollers 8<1> are driven at a lower speed. The idler section 8 is of such a length that the slowly-moving rollers 8<1> will not cause a sheet to buckle as it comes from the faster-moving forming-rollers, and the impetus given to the sheet by the forming-rollers carries it over the idler-rollers 8 on to the driven rollers 8<1>.
Patent GB-769107-A (GB)
Title: Improvements in or relating to the rollers of roller skates, roller conveyors, light trolleys and the like
Inventor: PARKER HORACE
IPC: B65G39/00
Filed: 1954-09-09
Abstract: 769,107. Vehicle wheels. PHILLIPS & CO., Ltd., J. A. Sept. 8, 1955 [Sept. 9, 1954], No. 26112/54. Class 144 (1). In a roller skate or like wheel comprising a hub sleeve 1 with an external bearing surface for one or more rings of balls 4 housed in two bearing cups 5, the bearing surfaces of the cups are located in correct spaced relation by mutually abutting external radial lips 6 provided on the confronting edges of the cups, and the cups are secured together by clamping of the radial lips 6 between the inner edges of two interfitting sidewall and tread-forming flanged annular discs 7, 8 when the latter are pressed together with their tread flanges 10, 12 in overlapping relationship and the overhanging peripheral edge 13 of the outer flange interned to lock the discs 7, 8 against relative axial displacement. As shown, the discs 7, 8 have axially inwardly-directed inner peripheral flanges 9, 11 respectively to clamp against the bearing up lips 6.
Patent GB-767157-A (GB)
Title: Improvements in or relating to brassieres
IPC: A41C3/00
Filed: 1954-09-09
Abstract: 767,157. Brassieres. INTERNATIONAL LATEX CORPORATION. Sept. 9, 1954 [Sept. 29, 1953 ; Sept. 29, 1953], No. 26129/54. Class 141. A brassiere has elastic side portions each comprising a diagonally elastic member 38 and a horizontally elastic panel 33 both attached to the outer edge of the breast cup 26 and to the back portion 34. Further elastic members 57, 58 are attached to the inner edges of the breast cups and of the front panels 31, their lower portions overlapping to form a pocket in which a piece of inelastic pliable fabric is inserted.
Patent GB-206823-A (GB)
IPC: B62D35/00
Filed: 1923-10-19
Abstract: 206,823. Persu, A. Nov. 13, 1922, [Convention date]. Luggage and like holders.-In motor vehicles of streamline shape in which the rear wheels have a narrower track than that of the front wheels and together with these are contained within the streamline shape, and the passengers are seated at the front with the motor m in the rear, spare wheels e are mounted between the longitudinal beams d to the rear of the wheels b.
Patent GB-632166-A (GB)
Title: Improvements in or relating to blocking-layer cells
IPC: H01L21/06
Filed: 1946-08-30
Abstract: 632,166. Asymmetrically-conducting resistances. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Aug. 30, 1946, No. 26161. Convention date, Dec. 7, 1942. [Class 37] ,A blocking layer cell comprises a first electrode or carrier plate 1, a semi-conductive layer 2, e.g. of selenium, a blocking layer 3 and a second electrode 4 applied thereto and covered with an inert intermediate layer 8 on the other side of which lies the metal 9 on or in which a supply conductor 6 is secured. The intermediate layer may consist of iron, zinc or aluminium, in which case the second electrode may be of gold, bismuth, antimony or a bismuth-antimony alloy. Alternatively the intermediate layer may consist of a lacquer such as ethyl cellulose applied by dipping the cell into the lacquer and the hardened lacquer layer 8 has applied to it by spraying or otherwise a thin layer 9 of an alloy consisting of tin, cadmium and bismuth.
Patent GB-978306-A (GB)
Title: Load driving circuit
Inventor: LEE DON NGUEY
IPC: G11C11/06
Filed: 1962-07-09
Abstract: 978,306. Circuits employing bi-stable magnetic elements; transistor switching circuits. AMPEX CORPORATION. July 9, 1962, No. 26209/62. Headings H3B and H3T. A circuit for driving a winding 20W connected in series with a diode 20WD and coupled with a plurality of magnetic cores 10A to 16A transmits a small priming current followed by a larger current sufficient to perform the switching operation. Coincident pulses from an input pulse source 46 and from a gate 38 operate a transistor switch 24 and a write switch comprising transistors 70, 68 to complete a circuit through the winding 20W from the terminal A of a current stabilizing circuit 48. A dummy load comprising transistors 106, 108, 110 in the current stabilizing circuit (Fig. 3) normally conducts and robs the winding 20W of current from source 100 leaving current in the winding insufficient to drive the cores. When the transistors of the dummy load are blocked by a drive pulse from source 50, which follows the coincident pulses after a delay of less than a microsecond, the whole of the current from source 100 is diverted through winding 20W to drive the cores. Current stabilizer circuit, Fig. 3.-Transistors 106, 108, 110, 134, 136 normally conduct and transistor 122 is normally non-conducting. A drive current pulse from source 50 cuts off transistor 134 and condenser 140 charges through transistor 136. The voltage on the condenser rises linearly with time to make transistor 122 conduct and to cut off transistors 106, 108, 110. At the end of the pulse, the base of transistor 122 will return linearly to its original potential. The rise and fall of the drive current are controlled by potentiometers 146, 158 and the magnitude of the priming current is controlled by potentiometer 118.
Patent GB-978495-A (GB)
Title: Amylose solutions
IPC: C08B33/04
Filed: 1963-07-02
Abstract: Amylose  ethers  are  made  by  reacting  an aqueous solution of amylose consisting of 2-30 parts by weight of amylose and 98-70 parts by weight of water with an etherify-agent in presence of 0.01-0.25 mols. of an alkaline catalyst per mol. of amylose.  In a continuous process, the amylose solution etherifying agent and catalyst are brought together at predetermined rates, the concentration of alkaline catalyst in the reaction zone being maintained at a level insufficient to dissolve amylose in water at the said concentration at room temperature. The amylose ether is then dewatered. The etherifying agent may be an alkylene  oxide e.g.  ethylene  oxide, propylene oxide, 1,2-butylene oxide, 2,3-butylene oxide and styrene oxide;  a ,  BETA-unsaturated Michael's addition reagents e.g. acrylonitrile, acrylamide ethyl acrylate and vinyl sulphones; lactones e.g. BETA-propionolactone, and propane saltone; alkyl halides e.g. methyl chloride, chloroacetic acid, ethylene chlorohydrin and benzyl chloride, and dialkyl  sulphates  e.g. dimethyl  and  dietyl sulphates. Specified  catalysts  are  alkali and alkaline  earth  metal hydroxides,  tetraalkylammonium hydroxides, tetraalkyl phosphonium hydroxides, and pyridine. The amylose may be derived from natural or modified starches. The amylose solution is made by heating an aqueous suspension to more than 125 DEG C. in an autoclave or jet cooker. Etherification may be carried out by maintaining the reaction mixture at 35 DEG C. to the dissolution temperature of the amylose in an open or closed vessel in air or under nitrogen. After neutralisation of catalyst and removal of solids, the amylose ether may be recovered from solution by precipitation, by evaporation on hot rolls, by spray drying, or by casting the solution into films. In one embodiment, a continuous process,  an aqueous  amylose  slurry  is continuously solubilised and cooled to 80 DEG C. and is injected with an alkaline solution of etherifying agent.  The  mixture, after passing through a vertical glass pipe reactor, is neutralised, spray dried, and the resulting amylose ether extracted with acetone. Specifications 869,192, 871,634, 895,215, 935,339 and 935,340 are referred to.
Patent GB-631545-A (GB)
Title: Improvements in or relating to coil winding machines
IPC: H01F41/08
Filed: 1947-09-29
Abstract: 631,545. Covering cores by winding. STANDARD TELEPHONES & CABLES Ltd., SKELLERN, H., and COOLEY, H. Sept. 29, 1947, No. 26261. [Class 109] [Also in Group XXII] A toroidal tape or coil winding machine is provided with supporting, clamping and rotating means so that the laminations of a laminated toroidal core to be covered with the tape or wire are maintained in predetermined relationship throughout the covering operation. In the machine shown, a shuttle unit A operates through the laminated toroidal core B located in a supporting unit C all of general known form. A pair of rollers E, of the supporting unit C, are enlargements of spindles D which are driven at a speed relative to the speed of the shuttle through worm gear H, telescopic spindle F, and bevel gearing G. The laminated toroidal core B is pressed upon the periphery of the rollers E by a spring-loaded roller 1. The core B is supported by a roller L at right angles to roller I and by a pair of rollers K at right angles to the spindles D carried on loose sleeves V.surrounding the spindles D, the axes of the rollers K ,being maintained radial with the centre of the core B by means of a pair of forked levers M, rigidly attached to the lower end of each of the sleeves, forked along a radial line parallel with the axis of rotation of the corresponding roller K, and engaging with a pin N rigidly fixed and coincident with the centre of the core B. The clamping means for the laminations of the toroidal core comprises a pair of free running rollers P in alignment with the centre of the core each carried by a lever O-one on each side of the shuttle unit, the rollers P pressing the laminations of the core B into intimate contact with one another under the influence of springs Q. By arrangement of suitable gearing, any of the free-running rollers I, K, L, P may be positively rotated to assist to rotate the core B.
Patent GB-948321-A (GB)
Title: Improvements in oil well equipment
IPC: E21B33/037
Filed: 1960-07-28
Abstract: 948,321. Wells. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. July 28, 1960 [July 30, 1959], No. 26289/60. Heading E1F. A plug for a subaqueous wellhead 11 having a locking groove 47 comprises a body 23, a rod 25 slidable within the body, a fishing head 27 on the rod, latches 44 on the body for engaging the groove, and seals 50, 51 on the outside of the body for sealing between the body and the wellhead. The wellhead is normally enclosed by a bellows 16, the space between the bellows and wellhead being filled with grease having corrosion and marine growth inhibitors through ports 20, 21. A piston 34 is slidable on the rod, the upward movement of which is limited by a flange 30 engaging the piston. The plug is lowered into the wellhead on a tool 56, the plug being provided with a sleeve 60, and the tool, sleeve and a piston 59 running within the tool being connected by pins 62. When the plug is positioned in the wellhead a ball 58 is dropped down the tool support string 57 and fluid pressure is applied to move this piston 59 and shear the pins to permit the tool being withdrawn. During lowering of the plug the piston 34 is in its upper position. When the plug is located in the wellhead grease pumped through a conductor (not shown) enters ports 40, 41 forcing the piston downwardly to move the latches which are pivoted at 45 into engagement with the groove 47. When the plug is to be freed for removal the cover 27 is cut and a fishing tool engaged with the head 27 to lift the piston 34, the latches being retracted by a circular spring 46. Specifications 934,216 and 948,322 are referred to.