baber/WOPTO huggingface dataset:
Patent GB-747430-A (GB)
Title: Improvements in or relating to optical projection apparatus
Inventor: BETTLES ARTHUR EDWARD
IPC: G03B23/10
Filed: 1953-10-12
Abstract: 747,430. Optical projection apparatus. M.B. ENGINEERING (NEW CROSS), Ltd. Oct. 11, 1954 [Oct. 12, 1953], No. 28051/53. Class 97 (1). Apparatus for projecting transparencies comprises a shutter rotatable to interrupt the light beam periodically and simultaneously to move a carrier for the transparencies to bring another into position for projection. One form comprises lamp 8, condenser 13 and projection lens 14. A rectangular shutter 25 is carried on a shaft 23 rotated, at slow speed, through reduction gearing, by an electric motor. A freely rotatable disc 31 carries cheese-head bolts 37 which project as pins 38. These pins locate two transparent discs 29, 30 and also film transparencies 28 placed between them, the discs being secured by a knurled nut on the spindle of the disc 31. The transparencies are also located by pins 39 fixed in the disc 29 and passing through holes in the disc 30. An abutment 26 carried by the shutter strikes the head of a bolt 37 at each revolution and moves the picture carrier forward to the extent of one picture. The carrier is located when stationary by a spring-loaded pivoted arm 40 having a notch 43 which engages one of the bolt-heads 37.
Patent GB-1179450-A (GB)
Title: Real Fur Webs
Inventor: INGRAM JOHN MICHAEL
IPC: C14B15/10
Filed: 1967-06-19
Abstract: 1,179,450. Seaming non-metallic sheet material. JOHN MICHAEL (SAVILE ROW) Ltd. 16 July, 1968 [19 June, 1967], No. 28083/67. Heading B5K. As shown in Fig. 1, a composite web 11 of natural fur having a uniform width and a desired length comprises small, irregularly shaped pieces 12 of natural fur fitted and joined together along their edges 13. As shown in Fig. 2, a web of natural fur comprises composite rectangular panels 14, 16 and 21, which are similar in structure to the composite web 11, and rectangular, one-piece panels 17 and 19 of natural fur fitted and joined together along their transverse edges. The small, irregularly shaped pieces and the panels may be joined together by sewing, or they may be secured, by an adhesive, to a homogeneous, supporting web of flexible material, such as thin leather, woven natural material, e.g. linen or canvas, or woven or homogeneous synthetic plastics material.
Patent GB-376570-A (GB)
Title: Improvements in or relating to forced-feed water-tube steam generators
IPC: F22B29/06
Filed: 1931-10-09
Abstract: 376,570. Water-tube steam boilers. SIEMENS-SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. Oct. 9, 1931, No. 28135. Convention date, Nov. 1, 1930. [Class 123 (ii).] Water-tube boilers of the forced feed type in which the working medium is forced through a continuous tube system comprise a combustion chamber lined with vertical tubes which are divided into groups traversed by the working medium in the same direction, and connected in series by tubes traversed in the opposite direction. A combustion chamber 1 is lined with tubes opening into distributing headers arranged in four rows a . . d. Feed is preheated in tubes 4, 5 and passes in succession upwardly through the tubes interconnecting the headers a<1>, b<1>, a2, b<2>, and a3, b3, being delivered to the lower header of each succeeding group by a down tube 9 or 11 which may be screened from radiant heat. From the last. header b<3> the medium passes through a tube 12 to the first header of row c and after traversing the groups of parallel tubes and return tubes on the left side of the combustion chamber is conveyed to a superheater 3. Superheating may however be effected in the last group or groups of tubes in the combustion chamber. The flow of medium through the tube groups may be counter to that of the heating gases.
Patent GB-604233-A (GB)
Title: Improvements in or relating to printing machine
IPC: B41F21/00
Filed: 1945-10-25
Abstract: 604,233. Printing - machines. HARRISSEYBOLD CO. Oct. 25, 1945, No. 28157. Convention date, March 11, 1942. Drawings to Specification. [Class,100(ii)] A throw-off mechanism for printing- presses is controlled by a feeler which trips the impression cylinder or a feed cylinder if the 'feed grippers fail to grip a sheet is-described in connection with a machine which is substantially identical with that described in Specification 604,232. The claims in the present case differ from those of the above Specification, and are directed especially to a printing-machine including a printing-couple and including a set of travelling sheet grippers, means. for feeding sheets to the grippers at a given point in their travel, a sheet detector finger travelling with said grippers and being arranged to assume at that point either of two positions depending upon whether or not the finger is deflected by a sheet taken from said feeding means, and mechanism functioning at a point with respect to the direction of sheet travel substantially spaced from said first named point for controlling the impression of said printing-couple, the operation of said mechanism being dependent upon the position of said finger. Specification 604,264 also is referred to.
Patent GB-463737-A (GB)
Title: Improvements in or relating to variable pitch propellers, especially for aircraft
IPC: B64C11/00
Filed: 1935-10-12
Abstract: 463,737. Airscrews. FAIREY AVIATION CO., Ltd., and FORSYTH, A. G. Oct. 12, 1935, No. 28243. [Class 114] Variable-pitch airscrews in which the pitch-changing mechanism is fluid operated and provided with a double acting hydraulic unit consisting of one or more toroidal cylinders each containing a piston having rack teeth which engage a pinion directly or indirectly coupled to the blade actuating gear. The space immediately adjacent the hub is formed as a toroidal cylinder 44a containing pistons 47 operating in spaces 44b formed by partitions 45 and 46. The outer surfaces of the piston have racks 48 projecting through openings in the cylinder and engaging with pinions 49 on shafts 50 that actuate nuts 52 having projections engaging slots in the blade roots. The spaces 44b are connected by channels and pipes with passages 64 and 71 which are under the control of a valve 60. The supply to the valve is by means of a gear pump utilizing the ordinary lubricating oil of the engine. When according to the setting of the valve 60 the pistons are moved, the pitch of the propeller blades is varied. In a modification the rack is formed on the inner side of the toroidal pistons. Where two propellers are coaxially mounted and driven in opposite directions then the mechanism for actuating pitch-changing gear may be driven off the one set of toroidal pistons operating on a plate 102 through screw and nut gear 92, 93. The plate gear carries projections 104, 105 for operating on the gear of the first screw and further projections 109, 110 operating on the blade roots of the second air screw. The sleeve 102 is provided with a thrust member 108a. Specifications 399,313 and 443,750 are referred to.
Patent GB-809029-A (GB)
Title: Method of protecting parked aircraft against icing
IPC: C09K3/18
Filed: 1955-10-04
Abstract: 809,029. Icing preventing compositions. KILFROST Ltd., and HALBERT, S. Sept. 5, 1956 [Oct. 4, 1955], No. 28271/55. Class 29 Ice formation on parked aircraft is prevented by spraying with a molten gel comprising glycerol and/or ethylene glycol, a gelling agent, and water. The gelling agent may be gelatine or a water soluble fatty acid soap, such as a sodium or ethanolamine soap. In an example a gel containing ethylene glycol, water, gelatine and triethanolamine oleate is metled and sprayed on the surfaces of parked aircraft.
Patent GB-728930-A (GB)
Title: Improvements relating to flower pots
Inventor: RUDENGREN SIGGE MARTIN NATANAE
IPC: A01G9/02
Filed: 1952-11-10
Abstract: A flower pot of the usual shape and having a ventilating-hole in its base is moulded from a mixture of waste vegetable materials such as waste bark from tanneries, a binder such as a synthetic resin glue and a substance impermeable to moisture such as a coating of polyvinyl acetate, phenol resin, or polyethylene.  A mould destructive substance may also be added.
Patent GB-441303-A (GB)
Title: New and improved screw-threading machine for forming taper threads
IPC: B23G1/22
Filed: 1934-10-03
Abstract: 441,303. Screwing die-heads. KENDALL & GENT (1920), Ltd., and HALL, J. L., Victoria Works, Gorton, Manchester. Oct. 3, 1934, No. 28282. [Class 83 (iii)] In a machine having a non-rotary die-head a which may be opened slightly during operation, for the production of taper threads, by means of a worm-wheel segment b rotatable on the head by a worm v, this worm is connected by a disengageable clutch to a pinion d meshing with a rack c attached to the work-holder. Either the rotary work-holder (not shown), or the diehead may be fed, but preferably the workholder and rack c are stationary. The pinion d is connected by an internal screw-thread therein to a hollow shaft e so that for cutting parallel threads the pinion may screw along the shaft without rotating the worm v. For taper threading the pinion is locked to the shaft by means of a rod g screwing in the shaft when rotated by a hand wheel so as to engage a ball thrust bearing in the pinion and limit its axial motion. The shaft g has a pinion f keyed thereto meshing with a pinion k which engages a rack l supported in a pivoted bracket m and pivoted at n to one end of a lever o. The lever o has a fixed central pivot p and is slotted at its lower end to engage a pivot q on a rack r supported in a pivoted bracket t and engaging a pinion s keyed to the shaft u which carries the worm v. Rotation of the pinion d by means of the stationary rack c thus rotates the worm v through the racks l, r and the lever o, the gear ratio being variable by movement of the pivot q along its slot in the lever. The degree of taper produced may be further varied by changing the pinion d, the rack c being mounted in adjustable brackets x for this purpose. The die-head may be opened, e.g. for removal of the work, on rotation of the shaft u by means of a hand wheel thereon.
Patent GB-378696-A (GB)
Title: Improvement in or relating to coffee and like infusers
IPC: A47J31/06
Filed: 1931-10-12
Abstract: 378,696. Infusing-machines. HOLT, J. R., 152, Grove Lane, Camberwell, London. Oct. 12, 1931, No. 28295. [Class 129.] In a coffee-making device with an upper infusing chamber and a lower urn, the infusing chamber 1 has a coneshaped bottom 1a and communicates with the urn by an orifice 2 normally closed by a plunger 11. Means are provided on the lid or cover 4 for holding the plunger in raised position. Such means may comprise a sliding plate 10 with a keyhole shaped slot 8 engaging a reduced part 13 of the plunger.
Patent GB-804609-A (GB)
Title: Improvements in automatic electrically-heated apparatus for making beverages
Inventor: HAWKINS DAVID LAWRENCE
IPC: A47J27/21
Filed: 1955-10-05
Abstract: 804,609. Heating liquids by electricity. HAWKINS & CO., Ltd., L. G. Oct. 5, 1956 [Oct. 5, 1955], No. 28374/55. Class. 39(3) [Also in Group VI] Automatic electrically heated apparatus for making beverages comprises an electrically heated boiler 1 detachably mounted on a movable platform 3 with a heating element 2 controlled by a positionresponsive switch actuated by movement of the boiler which delivers its contents when boiling, means being provided for regulating the instant after the liquid has boiled at which the position-responsive switch is operated to open the circuit to the boiler element 2 thereby regulating the amount of liquid delivered from the boiler. The boiling liquid is expelled into a tea pot or the like through tube 6 connected to the lid 7 which is held in steam tight relationship to the boiler by a stirrup 8. As shown, platform 3 is pivoted on a pivot 4 secured within a base 5 and carries, at one end, a casing 9 containing the position-responsive switch and a buzzer. A manual on/off switch 10 on base 5 controls the electric supply from cable 11 and the boiler 1 is connected to the control box by a plug and socket coupling 12. The lower portion 3a of platform 3 which is connected thereto by spacers 3b has a bar 13 secured to one side on which a weight 15 is slidable which controls the amount of water which is evaporated from the boiler before the platform tips and switches off the current. Member 15a attached to weight 15 extends through a slot 16 in the base 5 so that the position of the weight is readily adjustable. Weight 15 also has a projecting stop 15b which moves in a slot 18 carried from the lower portion 3a to limit the travel of the weight. Specification 743,183 is referred to.
Patent GB-748308-A (GB)
Title: Crude-oil burners
IPC: F23C99/00
Filed: 1953-10-16
Abstract: 748,308. Liquid fuel burners. DEKKER, A. Sept. 20, 1954 [Oct. 16, 1953], No. 28553/53. Class 75(1). In a crude oil burner comprising an annular evaporation pan 1 provided with a cover 8 and having a sloping bottom to which oil is supplied through an inlet 4 and is vaporized, the vapour passing through a vertical oil-gas outlet 3 and the residue through an outlet 5 to be burnt in a separate combustion chamber 7 having upstanding from the bottom thereof a hollow column 23 provided with holes 25, the cover 8 has ribs 11 formed on its outer periphery which project into the vertical oil-gas outlet 3. Alternatively the ribs may be formed on the inner side of the wall 13 of the pan 1 or holes for the oil-gas may be provided in a flange formed on the outer wall of the cover 8, Fig. 3 (not shown). A ridge 10 is provided between the high and low portions of the sloping bottom of the pan 1. To effect ignition a handle 35, mounted on a protection base 34, is rotated to separate the pans 1 and 33 by means of inclined cams on the pan 1 sliding in inclined slots on the pan 33. Cooling ribs 15 may be provided on the wall 13 of the pan 1. The top cover 12 of the burner, is provided with interior ribs 36 over which combustion air flows but which however do not contact the cover 8 of the annular evaporation pan 1 and so avoid cooling such cover 8. Specifications 586,869 and 630,916 are referred to.
Patent GB-1479668-A (GB)
Title: Rolling mill control system
IPC: B21B37/18
Filed: 1974-06-27
Abstract: 1479668 Automatic control of rolling mills ISHIKAWAJIMA-HARIMA JUKOGYO KK 27 June 1974 [27 June 1973] 28689/74 Heading G3R The system for adjusting the gap of a rolling mill to compensate for the magnitude and angular position of eccentricity of the rolls is modified to allow for the effect of slip between the upper and lower rolls. Slip is determined in an arithmetic unit 9 from the difference between counters 5, 6 of pulses from generators 3, 4 coupled to upper and lower back-up rolls 1, 2 and is used to correct, at 25, the output of an arithmetic unit 22 according to given mathematical formulae. The unit 22 solves two equations relating the magnitude of roll pressure variations, measured at 10, with the sine and cosine of the instantaneous angle of the upper roll 1 relative to a datum. These values are produced once per revolution in a first unit 20 and are averaged over several revolutions at 22, provided a gate 21 is open due to the pressure being such as to indicate the presence of metal between the rolls. Units 20, 22 operate digitally on signals obtained by rapid sampling of the analogue output of pressure transducer 10. The output of 25 is connected to a computer 27 which calculates the positonal adjustments necessary to compensate for eccentricity, the computer signals being converted to analogue form at 16 for addition to actual and desired position signals in a hydraulic positioning servosystem 11 ... 15.
Patent GB-1188989-A (GB)
Title: Improved Container.
Inventor: RAGETTLI CHRISTIAN
IPC: B65D25/34
Filed: 1967-06-21
Abstract: 1,188,989. Portable vessels. VAN LEER (U.K.) Ltd. 20 June, 1968 [21 June, 1967], No. 28719/67. Heading A4A. [Also in Division B8] A portable vessel of inverted frustroconical shape is provided on substantially the whole of its outer surface with a helical arrangement of a plurality of beads alternating with a plurality of furrows. The vessels can be nested by screwing one into another, jamming being prevented by an abutment on the bottom or by offsetting the bottom upwardly. A lining may be screwed into the container.
Patent GB-303240-A (GB)
Title: Improvements in or relating to machines for tapping holes
IPC: B23Q5/04
Filed: 1927-10-29
Abstract: 303,240. Bates, C. R., and Clyne, T. M. Oct. 29, 1927. Tapping.-A tapping machine of the kind comprising an endwise movable tool spindle and two pulleys driven in opposite directions and independently of the spindle, each pulley being provided with a clutch member adapted to engage a corresponding clutch member secured to the tool spindle so that the spindle can be driven in either direction at will, has a sleeve slidably and non- rotatably mounted on the spindle with the two pulleys rotatably mounted thereon, but constrained to move therewith and means for moving the sleeve endwise to cause either of the pulleys to be clutched to the spindle. The spindle 10 is slidably mounted in a sleeve 11 and in a bearing 12 on the machine frame 13. The sleeve 11 slides in a bearing 14 on an arm 15 of the frame and has reduced ends on which are loosely mounted pulleys 20, 21 driven in opposite directions by a driving band 22 passing over a pulley 31 fast on a shaft 28 and a loose pulley on the same shaft. Cone clutch members 23 on the pulleys 20, 21 are adapted to engage with companion clutch members 24 fixed to the spindle 10 at such distance apart that the upper and lower clutches cannot be in engagement simultaneously. Normally the upper clutch members are in engagement so that the tapping tool mounted on the lower end of the spindle is rotated in the unscrewing direction. Disengagement of the clutches is ensured by springs 25, the springs of the lower clutch preferably being stronger than those of the upper clutch. The sleeve 11 has a rack 16 in engagement with a pinion 17 on a shaft 18 rotatable by a hand-wheel 19. Rotation of the latter in the appropriate direction depresses the sleeve 11 and when the tool engages the hole to be tapped the upper clutch is disengaged and the lower clutch engaged so that the spindle is rotated in the screwing direction. When the tapping operation is completed the hand-wheel is rotated in the reverse direction causing disengagement of the lower clutch and engagement of the upper clutch, whereby the top is unscrewed. An adjustable stop 26 may be provided on a bracket 27 for tapping blind holes of a predetermined depth, the lower clutch being automatically disengaged by the contact of the pulley 20 with the stop.
Patent GB-495737-A (GB)
Title: Improvements in collapsible multi-tier supporting-structures, for example for ambulances
IPC: A61G3/00
Filed: 1937-10-22
Abstract: 495,737. Ambulance vehicles; racks. LINZEE, N. H. Oct. 22, 1937, No. 28937. [Class 108 (i)] [Also in Group XIV] A collapsable, multi-tier supporting structure, more particularly for supporting stretchers in a vehicle adapted to be converted for use as an ambulance, comprises superposed frames or shelves removably attached along one edge to a wall, a leg or legs 16 depending from an upper frame 15 being hinged thereto about a horizontal axis or axes which are at a substantial angle to the horizontal axis or axes about which a leg or legs 19 are hinged to the next lower frame 18, means being provided for holding the lower ends of the upper legs to upward extensions 21 of the lower legs to maintain the structure rigid when erected. A two - tier structure fitted inside a motor lorry is shown in which the rectangular iron frames 15, 18 have channelsection members 11, 12 secured in cut-away parts of angle-iron end members 13, 14 thus leaving open the ends of the members 11, 12 so that the legs of a stretcher may be passed along the channels. The supporting legs 16, 19 are hinged at 17, 20 respectively to the outer ends of the members 13, 14 about axes at rightangles to each other so that the pairs of legs may be folded respectively longitudinally and transversely of the frames. The lower ends of the legs 16 are adapted to be secured to the upward extensions 21 of the legs 19 by slidable sleeves 22 on the legs 16, the downward movement of the sleeves being limited by pins 23. The frames are detachably secured to the side of the vehicle body by studs 24, Fig. 2, fixed to the body engaging slots 26 in brackets fixed to the frames, wing nuts 25 locking the parts together. To prevent swaying, the upper frame 15 has pivoted to its member 14, at 29, a strut 28 adapted to be detachably secured to the adjacent end wall of the vehicle. The studs 24 may be carried by a common fixing plate which in the case of a vehicle with non-rigid sides, may be secured to the floor. The fixing means may be bifurcated and have a horizontal pivot axis so that the frames may be swung against the vehicle wall. The structure may have more than two tiers and the members forming a frame may be pivotably connected together so that they may collapse in the plane of the frame.
Patent GB-1078815-A (GB)
Title: Chance apparatus
IPC: G07C15/00
Filed: 1965-07-09
Abstract: Chance apparatus for the random selection of numbers comprises a transparent hollow sphere, a number of coloured hollow balls and a detachable transparent tube attached to the sphere so as to allow the balls to pass freely in single file from the sphere into the tube, the tube being divided into numbered sections of equal size with the length of each section being equal to the diameter of the balls, so that when the balls are in the tube each ball is associated with a number marked on the tube.  If desired the end of the tube may be connected to a source of compressed air and the sphere have a vent in it.  The apparatus may be used with various coloured balls so that balls of different colours may be associated with different numbers marked in the tube.
Patent GB-1005812-A (GB)
Title: Passive stabilization system for a vessel or boat
IPC: B63B39/03
Filed: 1964-07-15
Abstract: 1,005,812. Stabilizing boats. C. R. HAIGH. July 15, 1964, No. 29159/64. Heading B7M. A stabilizer system comprises a tank 20 extending transversely of the vessel, a plurality of horizontal plates 27 disposed in stacked spaced relationship in opposite ends of the tank, weir means 25 disposed along the centre line of the tank and extending transversely to the main axis of the tank (i.e. extending along the centre line of the vessel), and a body of liquid in (but not filling) the tank.
Patent GB-942927-A (GB)
Title: Parity check circuits
Inventor: DELANOY DONALD BRIAN
IPC: G06F11/10
Filed: 1959-08-26
Abstract: 942,927. Electric selective signalling systems. PYE Ltd. Aug. 26, 1960 [Aug. 26, 1959], No.29221/59. Heading G4H. A parity checking circuit comprises a bi-stable circuit V 1 , V 2  whose state is changed over on receipt of each signal representing either a "one" or a "zero", a gate D 2 , D 3  supplied by the output of circuit V 1 , V 2  and also by a parity-check pulse (applied to diode D3), trigger V 3  only being fired when both inputs to D 2 , D 3  are present. The circuit forms part of the communication system described in Specification 942, 921 in which "ones" are transmitted as frequency F 1  and "zeros" as frequency "F 2 ". The scanner SC distributes the "ones" to respective storage tubes of a decoder, the fifth pulse firing tube V 4 . The fifth pulse is either a "one" or a "zero" to make the number of "ones" in the five pulses an odd number. Tube V 1  is arranged to be conducting initially so that an output is obtained from V 2 , when diode D 3  is blocked by V 4  firing, only if there is an odd number of "ones" in the five pulses. Tube V 5  fires soon after V 4 , and through diode D 1  prevents any further signals, e.g. noise from affecting V 1  or V 2 .