baber/WOPTO huggingface dataset:
Patent GB-751813-A (GB)
Title: Improvements in photographic shutters for stereoscopic cameras
IPC: G03B9/08
Filed: 1954-05-19
Abstract: 751,813. Stereoscopic camera shutters. GAUTHIER, GES., A. May 19, 1954 [March 24, 1954], No. 14719/54. Classes 98 (1) and 98 (2). A shutter for a twin-lens stereoscopic camera comprises two interconnected sets of pivoted shutter blades and a driving lever which is located in the space between the two sets of blades and is operated by a main shutter-operating spring, the movement of the lever being transmitted to the blades by a resilient part on the lever. As shown, two pairs of sickle-shaped blades 2 pivoted at 4, the blades of each pair being connected at 5, are operated by a link 6 attached at 7 to one blade of each pair and urged by a closing spring 10 against a stop 11. A lever 12 which is latched in the position shown by a lever 17 with its driving spring 15 tensioned carries a resilient arm 22 which engages the full side of a bevelled pin 25 on a lever 23 having a fork 23<SP>1</SP> embracing a pin 26 on the link 6. Movement of the trigger button 20 and the latch lever 17 is prevented, except when the shutter has been tensioned by movement to the left of a slide 21 so as to engage and move clockwise the lever 12, by an anticlockwiseurged lever 43 having a recess 43<SP>1</SP> adapted to receive a lug 17<SP>11</SP> on the lever 17, the lever 43 being cammed clockwise by a pin 44 on the lever as this moves to the tensioned position, while the release movement of the lever 17 is limited by a second recess 43<SP>11</SP> on the lever 43. On pressing the trigger 20 the latch lever 17 is moved clockwise so that its nose 17<SP>1</SP> releases the lug 12<SP>1</SP> on the lever 12 which is then driven anticlockwise by its spring to drive the link 6 to open the shutter. After the tip of the arm 22 has slipped off the pin 25, the edge 27 of the lever 12 engages a lug 23<SP>11</SP> on the lever 23 so that continued movement of the lever 12 reverses the movement of the link 6 and closes the shutter. Different instantaneous exposures are produced by a retard train 31 ... 34, the pivoted lever 31 lying in the path of a pin 35 on the lever 12 and being set by a timing cam 39 on a shaft rotatable directly by a knob on the front of the shutter unit. A recess 391 on the cam allows a lever 41 to rock anticlockwise when the cam is set to " bulb " so that a lug 41<SP>1</SP> lies in the path of a bent-over finger 12<SP>111</SP> on the lever 12 to arrest it in the shutter open position, the return of the latch lever on releasing the trigger moving the lever 41 clockwise to free the finger 12<SP>111</SP> so that the lever 12 completes its movement to close the shutter. A pin 9 on the link 6 is adapted to close a flashlight synchronizing switch 28, 29.
Patent GB-457111-A (GB)
Title: Improvements in or relating to means for indicating or recording the heat loss or thermal efficiency of industrial furnaces and power plants
IPC: F23N5/00
Filed: 1935-05-20
Abstract: 457,111. Electric signalling systems. ELLIOTT BROS. (LONDON), Ltd., Century Works, Lewisham, London, REBER, J. W., 136, Victoria Street, Westminster, and SMITH, L. W., Century Works, Lewisham, London. May 20, 1935, No. 14749. [Class 40 (i)] [See also Group XX] The responses of a CO2 indicator and a temperature meter for the waste gases of a furnace are combined to give an indication or record of the heat loss in or thermal efficiency of the furnace. The CO2 indicator is of the type in which the electrical resistance of a heated conductor placed in the flue gases is varied in accordance with the thermal conductivity of the gases. The Figure shows an electrically operated arrangement in which a Wheatstone bridge a forms part of an electrical CO2 measuring device, e.g. of the kind described in Specification 212,852, [Class 1 (i)], the proportion of CO2 being inversely as the volume of the waste gases for a given fuel. One diagonal of the bridge a is connected to one coil b of a cross coil instrument. The other coil h is in the diagonal of a Wheatstone bridge having arms comprising fixed resistances g, f, and resistance thermometers e, d, in the flue gases and in the air supply to the burners of the furnace respectively. In a modification, the coil h is in circuit with two thermocouples and the current through it may be adjusted by adding the constant potential drop across a small resistance to the differential e.m.f. from the thermocouples. A pointer j carried by the coils b, h, moves over a scale graduated to indicate either the ratio of the heat lost via the chimney gases to the heat supplied to the furnace or the thermal efficiency.
Patent GB-212794-A (GB)
Title: Improvements in "water sprinklers"
IPC: B05B3/06
Filed: 1923-06-05
Abstract: 212,794. Todd, W. C., and Pomeroy, J. W. June 5, 1923. Rotary apparatus. -A water sprinkler comprises a hollow stem 3 on which is mounted a rotatable sprinkler head 8 with reaction arms 11. A second sprinkler 6 is mounted on a tube 4 to rotate about the same axis and is given an intermittent partial rotation from the reaction head. For this purpose the tube has attached thereto an arm 7 carrying a vane 14 which is acted upon by a jet of water escaping from an opening 15 in one or more of the sprinkler arms. In a modification, the vane 14 is made of flexibly yielding material and is engaged by the arms or by a projection on one or more of the arms.
Patent GB-612046-A (GB)
Title: Improvements in containers for medicaments
IPC: B65D51/20
Filed: 1946-05-16
Abstract: 612,046. Containers for medicaments. WELLCOME FOUNDATION, Ltd., TAYLOR, F., and STEEL, D. J. May 16, 1946, No. 14814. [Classes 66 and 125 (iii)] A pot, jar, or tin, &c., 10, e.g. for penicillin ointment, &c., is covered with an inert disc 16, e.g. of paper impregnated with ceresin, a ring 15 of rubber, &c., fitting a recess in a screw cap 11 with a hole 14 in the centre through which a needle of a hypodermic syringe may be passed to penetrate the disc 16 and inject penicillin into an ointment base in the container. A push-on cap 17 is depressed at 18 in the middle to overlie the opening 14. Instead of being screw-threaded, the cap 11 may be a push fit, a snap fit, or have a bayonet fitting.
Patent GB-939750-A (GB)
Title: Mechanical aid for use with a violin or a viola when learning to play vibrato
IPC: G10D3/18
Filed: 1962-04-17
Abstract: 939,750. Violins. A. GARAI. April 17, 1962, No. 14906/62. Class 88 (2). An aid for use when practising vibrato on a violin or a viola comprises an arm rest 11 adjustably mounted on a tubular projection 10 clamped to the edge of the violin body with intervening layers of felt. The rest 11 is fixed to a screw 12 engaging a thread in the tube 10. The arm rest is fixed by a locking-nut 13. The clamp is operated by screws 5.
Patent GB-103461-A (GB)
Title: Improvements in Magnets for Magneto-electric Machines.
Inventor: COOKE GEORGE FREDERICK
IPC: H02K1/17
Filed: 1916-10-20
Abstract: 103,461. Cooke, G. F. Oct. 20, 1916. Magneto-electric machines; magnets.-Each end of the magnet of a magnetoelectric machine is formed with a groove b to receive packing, against which the end plates of the casing abut. The grooves are preferably formed during the rolling of the bar from which the magnet is made.
Patent GB-703050-A (GB)
Title: Improvements in automatic firearms fed with ammunition by means of cartridge magazines, in particular to anti-aircraft firearms
IPC: F41A17/38
Filed: 1952-06-13
Abstract: 703,050. Automatic firearms; magazines. BREVETS AERO-MECANIQUES SOC. ANON. June 13, 1952 [July 10, 1951], No. 15000/52. Class 92(2) Relates to magazine mountings of the kind in which projection and socket means 2, 3, at the front combine with a rear retractable bolt 5 to fix the magazine in position. According to the invention there is provided, ahead of the means 2, 3, a hooking system 7, 7a, 8, for supporting and guiding the magazine when it is pivoting, during the final period of its mounting movement, about a transverse axis where the projection and socket engage. By this arrangement the projection and socket are brought quickly into engagement. The magazine C shown has a T-shaped projection comprising a limb 7 and cross-pieces 7a, the limb fitting in a central slot of a forwardly inclined U-shaped socket 8. The latter is rigid with a magazine carrier G relatively to which the gun can recoil. When the magazine is hooked in position and is swung downwards as shown in Fig. 1, sloping faces 4a on rear projections 4 engage with and retract the bolt 5, such action serving to move the magazine slightly forwards to ensure full engagement of the parts 2, 3. The bolt, which then springs back to the locking position, may subsequently be released by a handle 6 when the magazine is to be removed.
Patent GB-199578-A (GB)
Title: Detachable wheels for vehicles
IPC: B60B3/18
Filed: 1922-05-30
Abstract: 199,578. Turrall, H. W., Cooper, A., and Raven, F. C. J. May 30, 1922. Detaching from, and attaching to, permanent hubs.-The permanent hub 2 has an octagonal or like non-circular periphery 3 which fits a central opening 5 in the detachable wheel 4. Retaining devices comprise studs 8 carried in sockets on the hub 2 and fitting holes 14 in the wheel 4. To remove the detachable wheel, the studs are withdrawn inwardly against the action of springs and are locked in the inoperative position by projections 11 on the studs which work in bayonet slots 12 on the socket. Outside sleeves 13 moving with the projections 11 keep the slots free from dust and water. A flange 15 on the permanent hub abuts against a similar flange on the detachable wheel.
Patent GB-922892-A (GB)
Title: Improvements in or relating to methods of and means for improving the thermal efficiency and operation of gas producers of the solid- and liquid fuel types
IPC: C10K1/04
Filed: 1960-04-29
Abstract: <PICT:0922892/III/1> In a process of gasifying a solid or liquid fuel with air the hot products are passed through a descending column of lumpy inert refractory material whereby carbon and other products suspended in the gas are removed therefrom and are subsequently gasified with a mixture of air and steam to produce additional gas which is withdrawn together with the gas produced directly from the solid or liquid fuel.  The lumpy material may be corundon or aluminium either alone or mixed with zirconium oxide and refractory calcined chamotte.  In the apparatus shown in Fig. 1 the lumpy material descends a tower 5 and is withdrawn at the base of the tower and passed back to the top of the tower via a conveyer 13.  Producer gas from a producer 1 enters the descending column of lumpy material through an annular chamber 6 formed around the column of lumpy material by a widening of the tower.  Air and steam are introduced at 14 and the combined gas is withdrawn at 15.  In a modification a liquid fuel is gasified in the annular chamber 6 either by air admitted directly into the annular chamber or by additional air added through the pipe 15.  In the latter case a conical deflector is positioned in the widened part of the tower so that the air and gas rising in the lower part of the tower is made to pass through the annular chamber.  Specification 715,811 is referred to.
Patent GB-1061391-A (GB)
Title: Foldable frame structure for film mounts
IPC: G03B23/12
Filed: 1964-04-13
Abstract: 1,061,391. Catch fastenings; hinges. N. KITAYAMA. April 13, 1964 [April 18, 1963], No. 15243/64. Headings E2A and E2F. [Also in Division G2] Fig. 3 shows a square frame in which a film is mounted. The four corners are cut away as shown, and each face of the cut away portions has a small hemispherical recess, as at 2. The connecting members are two channelshaped brackets 3, Fig. 4, fixed back-to-back, and having on the turned-over flanges small depressions 4 which engage in the recesses 2. Thus one pair of brackets 3 serves to connect together two frames such as 1, and a series of frames may be connected together in this way to form a chain, Fig. 1. The various dimensions are such that the frames can hinge freely about the connecting brackets, and can fold up zig-zag fashion to lie with the frames flat one against another. The frames are readily detachable and interchangeable, so that any sequence of film frames can be made up into a chain for feeding to a projector. Since the frame 1 is entirely symmetrical, it can be turned round so as to bring any edge into engagement with the connecting bracket, and can face either way.
Patent GB-1312873-A (GB)
Title: Tyre-making drums
IPC: B29D30/24
Filed: 1971-05-17
Abstract: 1312873 Tyre making drum G GAZUIT 17 May 1971 [26 Jan 1971] 15245/71 Heading B7C A tyre making drum comprises at each one of its ends an assembly extending radially from an axial spindle 1, each assembly comprising an annular sleeve 4 mounted on the spindle for rotation therewith and provided with two annular protrusions, of which a first annular protrusion 4a is located on the end of the sleeve axially outermost on the spindle and is shaped to provide a plurality of mounting members, the second annular protrusion 4b being located on the end of the sleeve axially innermost on the spindle, a plurality of double crank levers 7 each having three rectilinear segments each adjacent a pair of segments being joined at an elbow, each lever being pivotally mounted at one end in one of the mounting members and each carrying at the first elbow adjacent to its pivotal mounting a rotatable roller 8 adapted to engage an inclined or tapered annular surface of a cam member 9 slidably mounted on the sleeve 4, the cam member having a hollow inner portion forming with the sleeve 4 and the second annular protrusion 4b a variable-volume chamber, and means 10 for supplying fluid under pressure to the chamber in order to effect axial movement of the tapered cam surface with respect to the rollers 8, thereby varying the inclination of the levers in relation to the spindle, thus altering the diameter of the drum between the fully collapsed position shown in the right-hand half of Fig. 1 and the fully expanded tyre-building position shown in the left-hand half of Fig. 1. The cam members 9 are moved against the action of tension springs 13 connected to a web 12 located in the median plane X-X of the drum, and are maintained in symmetrical relationship to the plane X-X during their movements by being mechanically interconnected to one another, e.g. by racks meshing with a pinion mounted on the web 12. A one-piece resilient annular sleeve 15 completely surrounds the radially outer segments of the double-crank levers 7, the sleeve being supported by blades 16 mounted on metal members 18 engaged in grooves 7a in the levers 7. The length of the drum may be altered by adjusting screws 6 which are received in members fixed to the spindle 1 and also received in tapped holes in the protrusions 4a.
Patent GB-168667-A (GB)
Title: Improvements in and connected with bolt heading machines
IPC: B21K1/44
Filed: 1920-06-05
Abstract: 168,667. Cotterill, Ltd., F. W., and Marson, R. June 5, 1920. Forging bolts; dies.-A bolt-heading machine first produces the head by a compound die and then finishes it by a planishing die. A heated bar 14 is placed between gripping dies 8 and against a gauging stop or the heading die acting as a stop, and is then upset by a plunger 3 having a sliding spring-pressed collar 2 adapted to engage guiding-recesses 5 in the dies 8. The plunger and collar move together during the first part of the heading, and the plunger moves further forward alone to complete the action. The bar is then placed between other gripping dies which may be formed in one with the first dies and have recesses 10 for the head and recesses 13 for guiding the planishing die 12. The gripping dies may be provided with renewable faces in the form of hardened steel plates fitted in cross slots.
Patent GB-382951-A (GB)
Title: A new or improved method of and means for cutting or shredding cork or the like
IPC: B27J5/00
Filed: 1931-05-23
Abstract: 382,951. Cutting or shredding cork &c. ; grinding machine cutters in situ. WILSON, E. G., Netherwood, Far Moss Road, Blundellsands, Lancashire. May 23, 1931, No. 15250. [Classes 60 and 145 (i).] Cork or like compressible material is cut or shredded by a moving cutter after being put under compression and whilst being gradually moved into the path of the cutter. Waste pieces of cork placed in a hopper 12 are taken up by a helically grooved drum 14 slowly rotated inside a ribbed casing 7 through reducing gearing 17, 18, 23, 27 from a pulley 16. The last member of the train 27 is a toothed ring frictionally clamped to the drum 14 so as to slip thereon if the resistance is excessive. The groove 15 in the drum is made progressively smaller, so that the cork is compressed in its travel, and the annular outlet 9 is tapered to effect a final compression. As the cork is protruded it is cut by three rotary knives 32 driven from a pulley 35 and carried by a disc 29 fixed on the main shaft 1. The knives are kept sharp by two sets of loose rollers 39, 40, the first set carried round with the disc 29 and the second set carried by the shaft 1. This set 40 is adjustable by means of a sliding rod 44. A wire gauze screen 36 separates dust from the cork shreds, which fall through an opening 38. An air blast may aid this separation.
Patent GB-453454-A (GB)
Title: Improvements in cooking apparatus
IPC: F24C15/16
Filed: 1935-05-27
Abstract: 453,454. Making ovens. STOVES, Ltd., and RICHARDSON, W. H., Rainhill, near Liverpool. May 27, 1935, No. 15362. [Class 83 (ii)] Shelf-supporting ribs are formed on an oven side plate by providing pairs of opposed slots 7 at opposite edges of a sheet-metal blank, and then folding the sheet on lines extending between the inner ends of each pair of slots so as to form a rib and to cause the edges of each slot to abut or overlap, these edges being then welded together. The corners may be cut as shown at 2, 3, and 4, so that the margins may be folded and welded at the corners to form a shallow tray-form structure to contain heat-lagging, as shown in Fig. 4.
Patent GB-796457-A (GB)
Title: A process for producing anion exchangers
IPC: B01J41/13
Filed: 1956-05-18
Abstract: Anion exchange resins are prepared by treating polyvinyl alcohol in solution in an acid medium with thiourea at a temperature not exceeding 150 DEG  C., adding a solution of formaldehyde, heating till a gel-like water insoluble mass is formed, reducing the mass to grains, washing with water and drying till a stable weight is reached.  The specified acid medium is hydrochloric acid.
Patent GB-656160-A (GB)
Title: Improvements in or relating to means for holding in contact co-operating rollers, cylinders and the like
IPC: B41F13/30
Filed: 1948-06-09
Abstract: 656,160. Printing &c. machines. TIMSONS, Ltd., and TIMSON, E. A. June 9,1948, No. 15575. [Class 100 (ii)] Cylinder tripping arrangements. -In a printing or other machine including a pair of horizontal cylinders, one above the other, and means for moving the upper cylinder vertically towards or away from the lower cylinder, the upper cylinder is supported in bearings in a pair of carriers vertically slidable in frame members, and at each side a co-operating screw and nut are provided, one of which is secured to each carrier and the other of which is held fixed, operable from below the upper cylinder for raising and lowering the latter. As shown, in a gravure printing-machine, the impression cylinder 4 and backing-roller 5 are carried in slides 3 vertically movable in the machine by means of screws 7 engaging fixed nuts 6 on the slides. The screws 7 are operated by a hand wheel 11 through bevel-gears 9, 10, whereby the impression cylinder is pulled down into contact with the printing-cylinder 2, which is mounted in fixed bearings. According to the Provisional Specification, the slides or carriers may be pulled down by springs, or by weights acting through a series of compound levers.
Patent GB-554502-A (GB)
Title: Improvements in and relating to dry cells
IPC: H01M6/08
Filed: 1941-12-03
Abstract: 554,502. Batteries. COGAN, J. Dec. 3, 1941, No. 15577. [Class 53] In a method of making dry cells in which a wrapped dolly 1 is placed in an outer container 4, the container is provided with a protective lining by wrapping loosely round the dolly a sheet of paper &c. 3 and inserting the dolly and its wrapping into the container containing the liquid electrolyte so that the latter rises into the space between the container and the wrapping, the latter becoming permeated with the electrolyte and tending to become loosened and detached from the dolly and to contact the inner surface of the container.
Patent GB-231360-A (GB)
Title: Improvements in high vacuum pumping systems
IPC: F04D19/04
Filed: 1924-06-28
Abstract: 231,360. General Electric Co., Ltd., and Campbell, N. R. June 28, 1924. Fluid friction apparatus.-A molecular pump (rotary friction type) is interposed between a diffusion or condensation pump and the vessel being evacuated. The molecular pump is constructed with relatively large clearances and run at a low speed so that it is effective in removing mercury vapour and has no appreciable effect upon the other gases coming from the vessel being evacuated. Such a molecular pump forms a substitute for the liquid air trap usually placed before the inlet to the condensation pump. Specifications 27457/09. 19793/14, 105,357 and 108,590, [all in Class 71, Injectors &c.], are referred to.
Patent GB-496671-A (GB)
Title: Improvements in the manufacture of cellulose esters
IPC: C08B3/22
Filed: 1937-06-05
Abstract: The stability and other properties of a cellulose ester which has been produced in the presence of sulphur-containing substances are improved by subjecting a hot or warm solution of the ester to the action of a heavy metal so as to render removable by filtration, sulphur-containing impurities, and then filtering the solution.  The treatment removes impurities which tend to produce haziness and diminution of viscosity in solutions of cellulose esters, and which render artificial silk and like products made from the esters unduly sensitive to the delustring action of hot aqueous media.  The treatment further reduces the corrosive action of cellulose ester solutions on metal surfaces.  The cellulose ester may be treated in solution in a neutral organic solvent. The heavy metal may be employed in the form of fine metallic films, granules, corrugated sheets, or powders of filterable size. The cellulose ester solution may be passed through a column containing metal plates, powder, beads, rings, turnips, or metal wool.  A mixture of two metals forming an electrolytic couple may be used.  For the filtration, fine cloth, paper or wood pulp may be used.  Silica gel, fuller's earth, or carbon black, may be added to the solutions to assist filtration or removal of colouring agents.  Heated air, exhausted from a dry spinning cell, may be employed for heating the spinning solution which is to be subjected to treatment with heavy metal and filtered. Part of the sulphur may be removed by a preliminary treatment before the cellulose ester solution is subjected to the hot treatment with heavy metal.  The preliminary treatment may comprise treatment of the solution with heavy metal at room temperature and filtration. In examples, cellulose acetate solution is heated and filtered through a mixture of steel or zinc and copper wool and then through cellulosic fibres.  Cellulose nitrate, formate, butyrate, and propionate may be treated similarly.  Plasticizers may be present during the treatment. The purified cellulose esters may be used for making films particularly photographic films, artificial silk, lacquers, and plastics.
Patent GB-1009028-A (GB)
Title: Enzymatic production of 6-aminopenicillanic acid
Inventor: BATCHELOR FRANK RALPH
IPC: C07D499/42
Filed: 1963-04-22
Abstract: 6-Aminopenicillanic acid is prepared by treating phenoxymethylpenicillin or a salt thereof, or a fermentation liquor containing the aforesaid penicillin or a salt thereof, at a pH of at least 7 with a penicillin amidase enzyme preparation derived from Achromobacter sp. Achromobacter sp. NClB 9424, A. arsenoxydans NClB 8687 and A. anitratus NCTC 8102 are specified micro-organisms. Cultivation and isolation is according to the parent Specification.