baber/WOPTO huggingface dataset:
Patent GB-1126109-A (GB)
Title: Method of, and apparatus for, grinding the edges of lenses
IPC: B24B9/14
Filed: 1966-06-21
Abstract: 1,126,109. Grinding. O. P. RAPHAEL. 21 June, 1967 [21 June, 1966], No. 27705/66. Heading B3D. A method of grinding the edge of a lens comprises carrying out a template-guided first edge grinding operation and then subjecting the lens to a second edge grinding operation in another grinding machine free from template guidance and in which a lighter control pressure is applied than in the first grinding operation. In the first edge grinding operation, the lens is ground to the shape of the template in a first machine which has a grinding wheel having a symmetrical V groove of 120 degrees. The lens 14 is then mounted between the pads 16, 17 of the other machine, the pads being on shafts 18, 23 rotatably mounted in a frame 10 pivoted about a shaft 11 carried by a bracket 12 mounted on a pivot 13. The shafts 18, 23 are driven by chains 38, 39 from the shaft 11 which is connected by universal joints 25, 26 and a flexible drive 27 to an electric motor 29. A rod 47 extends from the frame 10 and is connected to a damper 50. The grinding wheel in the second machine may be finer than that of the first and have a V-groove of 90 degrees so as to form a bevel 51 on the convex surface 52 of the lens. The weight of the frame may be partially supported by a spring. Water may be used as a lubricant during grinding.
Patent GB-1285137-A (GB)
Title: Automatic bending and/or punching machines for producing shaped parts from wire or strip
IPC: B21F1/00
Filed: 1970-06-09
Abstract: 1285137 Angular bending; punching; shearing HEINZ FINZER KG 9 June 1970 [16 June 1969 10 March 1970] 27788/70 Headings B3E and B3W A bending and/or punching machine for making parts from wire or strip by means of tools 14 grouped around a central workplace on a table 11 has a plate 12 having grooves 13 in which the tools are slidable towards and away from the central workplace. The work is fed along a path 17 and the tool guides are arranged either normal to or at 30 or 60 degrees to the direction of feed of the work. An axially movable carrier 21 has holes 29 to which a foot of a mandrel or an ejector may be secured. In the case of a mandrel screws 19 provide additional support. The tools may be bending, shaping, shearing or cutting tools.
Patent GB-816558-A (GB)
Title: Improvements in or relating to axial flow fans and pumps
IPC: F04D29/36
Filed: 1957-09-03
Abstract: 816,558. Axial-flow pumps and fans. KONINKLIJKE MACHINEFABRIEK GEB. STORK & CO. N.V. Sept. 3, 1957 [Sept. 27, 1956], No. 27808/57. Class 110 (1). In an axial-flow pump or fan, the impeller hub of which has a generally conical surface increasing in diameter in the direction of flow, each impeller blade is in two parts located one behind the other in the direction of flow and each adjustable. Each blade comprises two parts 6, 7, the stems 8, 12 of which are connected by levers and connecting rods to a disc 15 carried by a shaft 16, axial movement of which adjusts the pitch of the parts 6, 7. The impeller hub is generally conical in the region of the parts 6 and cylindrical in the region of the parts 7, and the cylindrical part of the hub may be rotatable circumferentially relative to the generally conical part to bring the parts 6, 7 back into alignment after adjustment.
Patent GB-269131-A (GB)
Title: Improvements in or relating to steam generators
IPC: F22B37/20
Filed: 1926-11-05
Abstract: 269,131. Siemens - Schuckertwerke Ges. April 7, 1926, [Convention date]. Walls. - To increase the absorption of heat by boiler water tubes 1 arranged in a radiation chamber the tubes are placed in contact with projections on heatconducting plates 2. The plates may be secured to the tubes, as shown in Fig. 1, or wedges 3, Fig. 2, may be inserted between the plates and the tubes to ensure good heat conducting connections. Specification 258,590 is referred to in the Specification as open to inspection under Sect. 91 (3) (a). This reference does not appear in the Specification as accepted.
Patent GB-278575-A (GB)
Abstract: 278,575. Maclean, N., Quinn, T., and Duffy, F. Feb. 16, 1927. Mudguards rotating with wheels.-A side-splash guard consists of a rubber &c. ring A having a beaded edge B and formed on its tyre-facing surface with ribs C of radial, helical, or zig-zag form, and with a continuous rib C', Fig. 5, or a series of projections, to space the guard from the tyre tread. The guard, may be moulded or vulcanized to the tyre, or detachably secured to the wheel by bolts &c.
Patent GB-716043-A (GB)
Title: Improvements in or relating to a process for the production of a sliver comprising staple fibres and apparatus therefor
Inventor: REVELL CUTHBERT WILLIAM
IPC: D01G1/10
Filed: 1951-11-28
Abstract: 716,043. Stapling fibres. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Oct. 3, 1952 [Nov. 28, 1951], No. 27896/51. Class 120(3) In a process for producing a sliver of staple fibre from a continuous travelling tow of artificial filaments wherein sufficient tension is effected in a drafting zone to cause some random breaking of the filaments, rows of spaced cuttings are produced in the tow and the time interval between the effecting of any two rows of cuttings required to give staple lengths is such that the second row is not formed before the advancing free ends of the first row are on the point of leaving the drafting zone. As shown, the cutting means consist of blades 5, 5<SP>1</SP>, 5<SP>11</SP> each having a set of guillotine cutting edges or knives : and attached to pistons 6, 6<SP>1</SP>, 6<SP>11</SP> which are advanced in timed sequence to a cutting position by cams 8, 8<SP>1</SP>, 8", and returned by recoil springs. Tows 1 pass between guide posts 2, enter the nip of feed rollers 3 the pressure of which causes the tows to spread into a single band, the filaments pass over a tension bar 4 and then through the nip of drafting rollers 12 the speed and distance from rollers 3 of which may be varied: the filaments are tautened between the rollers 3 and 12 and are severed by each set of knives as it descends into the tow. The band of stapled filaments leaving the rollers 12 is formed into a sliver by a funnel 15. In an embodiment of cutting apparatus, spaced cutting edges are all on a single transversely disposed blade which is moved transversely between successive motions that cause the edges to cut the band: each transverse motion extends less than the full distance between cutting edges, so that as the band advances there is produced a staggered series of cuts across its width.
Patent GB-639396-A (GB)
Title: Improvements in or relating to electron (and other negatively charged particle) discharge tube arrangements
IPC: H01J25/22
Filed: 1946-09-17
Abstract: 639,396. Electron beam apparatus. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Sept, 17, 1946, No. 27906. Convention date, April 11, 1941. [Class 39 (i)] An electron mirror in a discharge tube such as a velocity-modulated tube of the reflex type, an electron multiplier, or an oscillograph, comprises an accelerator electrode, and a plane electrode divided into a plurality of individually polarized insulated portions, whose individual potentials may be varied for varying the form of the equipotential surface of reflection. Modulating potentials may be superimposed on the potentials polarizing the different portions of the plane electrode. The plane electrode may be divided into a plurality of concentric rings, or into a plurality of parallel strips or wires, to simulate a cylindrical mirror. The arrangement may be used to concentrate the discharge from a cathode. As shown, the cathode C is circularly surrounded by insulated portions 1, 2, 3 which are maintained at potentials such that the electrons emitted from C are concentrated on the centre of the acceleration electrode B.
Patent GB-837269-A (GB)
Title: Improvements in or relating to an agricultural machine, more especially a power-driven cultivator
IPC: F16H3/00
Filed: 1958-09-01
Abstract: 837,269. Tractor driving gear. SOC. INDUSTRIELLE DE MACHINES AGRICOLES ROTATIVES SIMAR, and DUFOUR, J. R. Sept. 1, 1958 [Sept. 21, 1957], No. 28064/58. Class 79(2) An agricultural machine, such as a cultivator, comprises a reversible engine 1 and a gear box having only two ratios, the train for one of the ratios comprising an additional gear 10 so that the machine is reversed by a change of transmission ratio and choice of working speed is effected by reversal of the engine. A pinion 4b on the driving shaft 4 meshes with a pinion 6 loosely mounted on a shaft 7 while a pinion 4a drives the gear 10 which is in mesh with a second loosely mounted pinion 5. The shaft 7 may be connected by a clutch 8 with either of the pinions 5, 6 and drives the wheel shaft 11 of the machine through a worm gear 12. The machine may be a walk-type tractor having a two-stroke engine and a reversible steering bar.
Patent GB-888579-A (GB)
Title: Improvements in and relating to projectile fuzes
IPC: F42C19/00
Filed: 1958-09-02
Abstract: 888,579. Projectile fuzes. VERWALTUNSGESELLSCHAFT DER WERKZEUGMASCHINENFABRIK OERLIKON. Sept. 2, 1958 [Sept. 10, 1957], No. 28200/58. Class 9(1). Projectile fuze in which an element 3 delays unlocking of the striker, the element 3 being made of a low melting point metal and having a surface against which the air is compressed during flight of the projectile whereby the heat generated fuses the metal, is provided with air ducts in the fuze casing to discharge the compressed air. The casing consists of a body 2 and a cap 1 which holds the element 3 against a disc 5 supported by a shoulder in the body 2 and preventing forward movement of the striker 6 to the arming position. Slots 7 in the cap 1 lead from the axial passage 9 to the exterior of the cap, so that air entering the passage is deflected rearward along the projectile. Instead of slots, bores 11 may be provided in the cap 1 and the element 3 may have a conical surface to improve the air flow.
Patent GB-226793-A (GB)
Title: Machine for the manufacture of waffles
IPC: A21B5/02
Filed: 1924-11-27
Abstract: 226,793. Delay, E. Dec. 28, 1923, [Convention date]. Waffle and like baking-apparatus. - A machine for making waffles, wafer cakes, and the like comprises two endless chains trained over rollers 1, 2 and 5, 6, 7, 8 respectively, the links of the chains consisting of half moulds 3, 4 which register to form closed moulds. The latter chain is of circuitous contour and is driven by the roller 8 and drives the complementary chain, e.g. by means of studs. The paste feeding device comprises a tube 9, having an aperture 10, on which a cross member is revolved by a drive from the roller 8. The outlet arms 11 follow the half moulds 3 which are immediately closed, heated by the burners 13, inverted and heated by the burners 14. The cooked wafflees are discharged upon a table 15 and brushes 16, 17 clean the moulds.
Patent GB-652580-A (GB)
Title: Improvements in cop-changing mechanisms for looms
IPC: D03D45/20
Filed: 1948-11-02
Abstract: 652,580. Automatic cop changing in looms; weft stop - motions; shuttles. MULATTI, I., and CREMONINI, L. Nov. 2, 1948, Nos. 28405 and 28406. Convention dates, Dec. 15, 1947, and March 10, 1948. [Classes 142(i) and 142(iii)] Cop changing mechanism, Fig. 1. When a dog 12 is raised into the path of a striker 15 on the slay, a pusher 5 is actuated through a toothed sector 7 and rack 6 to insert a fresh cop 3 into the shuttle 20. Initiating cop changing, Fig. 5. On weft failure, the looped tail 78 of a side weft fork 56 remains in the path of a reciprocating hook 57; the fork is mounted at 55 on an arm 52 which is consequently swung forward, whereupon a cam 90 on a lever 65 (held against a stop 68 by a tension spring 67) moves a lever 84 to bring the cop changing mechanism into action. A cam 92 on the arm 52 moves a lever 85 to interrupt fabric take-up. Weft stop motion, Fig. 5. If the weft breaks before the cop is exhausted, a cop feeder 71 is rocked by the cop whereby a hook 72 enters a slot 73 in the lever 65; when the arm 52 is swung by the reciprocating hook 57 as described above, the end 91 of the lever 65 pushes the starting handle 93 out of its retaining notch; fabric take-up is also interrupted by the cam 92. Shuttle, Fig. 3. The shuttle has a horn 23 and a threading slit 26 leading to an eye 25.
Patent GB-781757-A (GB)
Title: Improvements in and relating to umbrellas
IPC: A45B25/02
Filed: 1953-10-15
Abstract: 781,757. Umbrellas. MAPPIN, D. A., and MAPPIN, W. L. Oct. 12, 1954 [Oct. 15, 1953], No. 28496/53. Class 134. In an umbrella frame in which each rib comprises an inner part and an outer part, the inner part being hinged to the outer part near one end thereof whereby said parts can be disposed in overlapping relation, and in which a link is hinged at one end to the said end of the outer part and at the other end to a stretcher, means are provided which limit the movement of the link so that the link will always assume the same position when the umbrella frame is opened. In one form, the umbrella has a stick 10, which may be collapsible or telescopic or made in two separable parts, on which are mounted a crown 13 and a slide 11 retained by a catch 12. Each rib has an inner part 14 and an outer part 15 pivoted together by a member 16 at a point spaced from the inner end of part 15. The stretcher 17 is connected to rib part 15 by a link 18 comprising two side-pieces joined at one end by an integral crosspiece. The link 18 is pivoted at a point spaced slightly from the end of the rib part 15 so that movement of the link is limited by the edges of the cross-piece striking the rib. When the umbrella is opened one edge of the cross-piece will, if the link 18 is not in line with the outer rib part 15, strike the bottom of the rib part 14, so turning the link into line. The umbrella is closed by releasing the catch 12 and moving the slide 11 down the stick 10 until the stretcher 17 lies substantially parallel to the outer rib part 15. The umbrella can then be collapsed by turning the outer rib part 15 to a position adjacent the inner rib part 14 and then moving the slide 11 up the stick 10 until the parts 14, 15 and 17 lie substantially parallel to one another and to the stick 10. A resilient ring 21 assists the initial opening of the umbrella. The Provisional Specification describes an umbrella having a link 6 of different design connecting the stretcher 4 to the outer rib section 2. The link 6 has a rest 7 which limits the pivotal movement with respect to the rib section 2, and a cam surface 10 which contacts the underside of the inner rib section 1.
Patent GB-298533-A (GB)
Title: Improvements in energy-accumulating brakes for vehicles
IPC: B60T1/10
Filed: 1928-10-04
Abstract: 298,533. Kittilsen, C. Oct. 10, 1927. Energy of moving vehicle, storing and utilizing. -In an energy-accumulating brake, particularly for motor-vehicles, of the kind in which the kinetic energy of the vehicle is stored in a spiral spring and subsequently restored to the vehicle wheels by the expansion of the spring, one end of the spring a is connected to a brake disc f, which isadapted to be stopped when braking the vehicle and is rotatable in one direction only relatively to a moving shaft c on the vehicle, while the other end of the spring is secured to a sleeve b also capable of being braked and rotatably mounted on the shaft c, which sleeve may be clutched to the shaft so that, when the brake disc f is stationary, the spring is tensioned, and subsequently, when the brake disc f is released, and the sleeve b is braked and declutched from the shaft, the spring can transmit its energy to the shaft through the brake disc f and a clutch or driving connection between the disc and the shaft. In the construction shown this last connection is constituted by a pawl and ratchet device o interposed between the brake disc f and a bearing sleeve d fixed to the shaft c and arranged to permit rotation of the shaft, c after the disc f has been locked. The braking of the sleeve b is effected by means of a brake ring i permitted to rotate in one direction only, e.g., by providing a second pawl and ratchet device q, on a disc h secured to the sleeve b. The clutch connection between the disc h and shaft. c comprises a disc n fixed to the shaft, a second disc k loosely mounted on the shaft with annular laminae l disposed between it and the disc h, and springs m acting between the discs n, k. If, after the disc f has been braked and the spring a thereby tensioned, the ring i is braked and the disc f released, no relative movement of the parts occurs as the disc h and sleeve b are locked by the pawl and ratchet q, and the energy of the spring is merely stored; as soon, however, as the ring h and sleeve b are declutched from the shaft c, the outer end of the spring a is free to cause rotation of the brake disc f and shaft c in the normal or forward direction. The three successive operations referred to, namely, braking the disc f, braking the ring i and releasing the disc f and declutching the sleeve b whilst keeping the ring i braked, may be controlled by movements of a single brake lever, the declutching being effected by wedges acting on the bevelled edges of the disc k. The device may be interposed on the vehicle driving shaft so as to function as a fly-wheel and/or as a clutch.
Patent GB-246951-A (GB)
Title: Improvements in or relating to shipping baskets and the like
IPC: B65D6/08
Filed: 1924-11-28
Abstract: 246,951. Hogue, C. M. Nov. 28, 1924. Tubs or the like made from staves; heads. - Relates to baskets for shipping fruit &c. of the kind made from thin staves held together by hoops and adapted to be assembled on a stapling machine. The basket shown is made from overlapping staves 1<1> held in place by outer top, middle and double bottom hoops 2, 3, 4 and an inner top hoop 21, secured by staples 2<1>, 3<1>, and 4<1> respeetivelv. The staves need not overlap, however, but may be spaced. A top cover is provided, and comprises a rim 6 traversed by crossed slats 7 one of which extends under wire loop handles secured to the hoop 2. The cover may be held in place by turning flexible hook members secured to the top hoops over the rim 6 as shown. The bottom is similar in construction to the top cover but fits within the double bottom hoop and is shown held removably within the turnedover end 14 of a wire fastener 10. The bottom may also be held in place by staples driven through the hoop 4 into the bottom rim. A loose partition 12<1> of crossed slats stapled together may be provided.
Patent GB-502194-A (GB)
Title: Improvements in the manufacture and production of lead dioxide
IPC: C01G21/08
Filed: 1937-10-20
Abstract: 502,194. Lead dioxide. JOHNSON, G. W. (I. G. Farbenindustrie Akt.-Ges.) Oct. 20, 1937, No. 28599. [Class 1 (iii)] Lead 'dioxide is produced by reacting lower lead oxides, hydroxides, or carbonates or other salts capable of forming lead oxide or hydroxide under the reaction conditions with oxygen in the presence of an aqueous alkali solution containing at least 20 per cent of alkali hydroxide. The process may be carried out at room temperature or at temperatures up to 350‹ C., at normal or elevated pressure, e.g up to 30 atmospheres, and with oxygen or air. Any plumbate formed may be hydrolyzed by heating with water. The examples describe the treatment of a lead oxide-lead dioxide mixture obtained in the regeneration of chromic acid, of lead hydroxide obtained by hydrolysis of lead sulphate, and of lead oxide obtained by heating basic lead carbonate. The process may be effected in a trickler tower.
Patent GB-889340-A (GB)
Title: Improvements in or relating to aircraft
Inventor: CROCOMBE FREDERICK FRANCIS
IPC: B64C29/00
Filed: 1959-08-21
Abstract: 889,340. Vertical take-off jet propelled aircraft. BOULTON PAUL AIRCRAFT Ltd. Aug. 12, 1960 [Aug. 21, 1959], No. 28696/59. Class 4. A vertical take-off and land aircraft has a group of engines 4 for providing vertical thrust and a group of engines for providing horizontal thrust, in which the latter group consists of bypass ducted-fan jet propulsion engines 10 and in which means are provided to direct part of the whole of the by-passed air to downwardlyfacing controllable nozzles 13. Engines 4 are mounted in a tail boom 2 extending fore and aft of the mainplane 3 and have air intak openings which may be closed by flaps 7, 8 and 9. The by-passed air from engines 10 is diverted by flaps (not shown) and ducts 11 into the passage 12, which communicates with nozzles 13, pivotally mounted on boom 2 fore and aft of mainplane 3. When, during vertical and low speed forward flight, the normal control surfaces are ineffective, the emission of air from these nozzles will control the aircraft about the pitch, roll and yaw axes.
Patent GB-694154-A (GB)
Title: Photographic contact or projection printers
IPC: G03B27/73
Filed: 1951-12-07
Abstract: 694,154. Photographic contact and projection printing apparatus. POTTER, R. S. Dec. 7, 1951 [Oct. 9, 1951], No. 28731/51. Classes 98 (i) and 98 (ii). The light source of the apparatus comprises two fluorescent electric discharge tubes emitting light of different colours, and an adjustable shutter whereby the ratio of the intensities of the light emitted from the system by each tube may be controlled. Preferably, each tube is formed to provide a number of spaced lightemitting sections arranged side by side, sections of one tube alternating with sections of the other tube, a housing with a number of adjacent compartments all open on the same side, and shutter means to close the openings in alternate compartments and adjustable to vary the ratios of the intensities of the light emitted from the system by each tube. The apparatus is intended particularly for use with photographic sensitive material the contrast of which varies with the colour of the exposure light. As shown in Fig. 1, a housing 1 for the light source is divided by partitions 6. Fluorescent tubes 9, 10 emitting light of different colours both consist of U shaped portions 11 connected by straight portions 12. The portions 11 of tube 9 lie in alternate compartments 7 between partitions 6, and the portions 11 of tube 10 lie in the intermediate compartments. The portions 12, and if desired also the curved parts of portions 11, lie outside the compartments, and are either masked by opaque plates or coated with opaque material. A plate 15 is mounted, by means of studs 17 and slots 16, to slide on the front of the housing, and is formed with apertures of the same size as the openings of the compartments and intermediate opaque strips 19 of similar width. By sliding plate 15 by means of a handle 18, the strips may be moved from one position in which the portions 11 of tube 9 are covered by strips 19, to another position in which the portions 11 of tube 10 are covered, the intermediate positions of plate 15 giving light from both sources mixed in any required proportion when diffused as by a diffusing plate. The diffused light may, for example, illuminate a negative in a photographic enlarger; when the light sensitive material receiving the image is of the kind yielding a degree of contrast which varies with the colour of the exposure light, and when the colours and intensity of the light emitted by each tube is properly chosen, the degree of contrast obtained is continuously variable by moving plate 15, and can be indicated by a pointer on plate 15 and a scale on body 1. The tubes have fluorescent coatings having strong emission in a narrow spectral range, and may be coated with lacquer containing dyes to absorb unwanted emissions. Specifications 494,088, 547,060, 547,883 and 552,368 are referred to.