baber/WOPTO huggingface dataset:
Patent GB-1339765-A (GB)
Title: Gear making
IPC: B23F5/20
Filed: 1971-04-19
Abstract: 1339765 Gear-Cutting BIRD ISLAND Inc 19 April 1971 [16 Feb 1970] 20980/71 Heading B3K In generating helically toothed cylindrical gears of involute or non-involute tooth form, a workpiece 45 and cutters 30, 32 are continuously rotated, each cutter has a ring of equi-spaced tools 152 having generating edges lying in a single surface of revolution, cutter/workpiece rotation speed ratio equals desired workpiece teeth/cutter tool number ratio, and a complete revolution of the workpiece intervenes between  successive cuts in respect of any one tooth  profile. The workpiece is carried between spindle  parts 42, 44 carried on a head 48 angularly adjustable by a hand wheel (60) acting through a  worm 56 and worm-wheel grooves 58. The  workpiece is gradaully upwardly movable,  against a spring 96 by fluid pressure fed into a spindle part cylinder 90. The workpiece is rotated by a motor 140 acting through a shaft 74 and gears 73, 72, 78, the latter acting via a key 80 engaging a helical groove 82 in the spindle part 44, the lead of the groove being equal to the workpiece lead. The cutters are each rotated by the motor 140 through the shaft 74, gears 118, 120, 122, 124, a differential gear 110 and gears 130a, 130b. The differential is also acted on, through gears 112, 114, by a motor 20 which drives a screw 106 by which the cutter is fed axially thereof, the arrangement providing for compensatory increase, or decrease, of cutter rotation speed as the cutter is axially fed. One method sequence comprises (i) infeeding the cutters, with the workpiece lowered, until the desired tooth depth is reached at the top end of the workpiece, and (ii) stopping cutter infeed and gradually raising the workpiece so that successive cuts, along oblique lines from filler to tip, are made across the workpiece face. In alternative methods, (a) the cutter infeed is dispensed with, particularly when generating non- involute gear teeth; and (b) with cutter axis perpendicular to workpiece axis, complete generation is effected during cutter infeed as disclosed in Specification 1,285,070. Each cutter comprises carbide tools 152 clamped against a head portion 150 by screws 202 acting through a clamping ring portion 156. As shown in Fig. 10, each tool 152 has a straightline generating edge 164 defined by flats 160, 162, a concave roughing edge 172, a filler producing radiused tip 170, and a cylindrical back surface 166. The flats 160, 162 of the tools are respectively held against V-forming flats 190, 192 in the head portion 150, teeth 194 of the clamping ring portion 156 having oblique surfaces 198 engaging the cylindrical back surfaces 166 of the tools.
Patent GB-499782-A (GB)
Title: Improvements in or relating to photographic cameras adapted for interchangeable lenses
IPC: G03B13/20
Filed: 1937-07-29
Abstract: 499,782. Photographic cameras. KODAK, Ltd. July 29,1937, No. 20986. Convention date, Aug. 11, 1936. [Class 98 (i)] In a photographic camera adapted to re,ceive interchangeable objectives of different focal lengths, a rotatable focusing sleeve is adapted to receive a detachable objective mounting having means suited to the focal length of the particular objective in the mounting such that upon rotation of the sleeve the objective is caused to execute a.n axial focusing movement without rotation, while a movable optical part of a range-finder applied to the camera is adapted under the control of an axially movable but non-rotatable member operated from the rotatable sleeve to be adjusted to alter its setting in accordance with the focusing movement of the objective. In the form shown, focusing is effected by rotating the sleeve 11. The sleeve 12 threaded to this and prevented from rotating executes an axial movement, carrying with it the moving mirrors 13 and 14 of a range-finder. A view-finder with correction for parallax is also provided. These parts of the camera are identical with those described in Specification 499,781. The normal objective is attached to the threads 20. Each alternative interchangeable objective comprises a lens tube 26 threaded at 25 to the tube 24 which is attached by the thread 23 to the rotatable sleeve 11. The tube 26 is prevented from rotating by the pin 27 suitably attached to the camera body and engaging the slot 28. The pitch of the screw 25 is chosen in relation to the focal length of the objective to co-ordinate the focusing movements with those of the range-finder. Another modification is described using a form of range-finder in which the variable element is a lens moved transversely across one of the light paths. Specification 457,138 also is referred to.
Patent GB-463164-A (GB)
Title: Improvements in wafer biscuits
IPC: A23G9/50
Filed: 1936-07-30
Abstract: 463,164. Wafer biscuits. FACCHINO'S PURITY BISCUITS, Ltd., and FACCHINO, A. July 30, 1936, No. 21063. [Class 28 (i)] A wafer cup or cone for ice cream has a boundary bead 3 which is large relatively to the thickness of the body wall, e gutter or groove 4 being formec in the bead to ensure that the bead is baked to the same extent as the body of the cone. The walls 5, 6 of the groove 4 may be joined by radial ribs. The outside 1 of the cone is patterned as desired and an external ridge 12 is provided to seat upon ar internal shoulder 10 of a similar wafer when the wafers are nested.
Patent GB-193064-A (GB)
Title: Improvements in or relating to friction linings, plates, blocks and the like
IPC: F16D69/02
Filed: 1921-08-09
Abstract: 193,064. Frood, H. Aug. 9, 1921. Clutches, friction.-Linings, plates, blocks, &c. for friction clutches are provided with an operative surface of roughened, corrugated, undulating, or interrupted form. Where a lining &c. is pro duced from woven or unwoven cotton or other organic, or asbestos or other inorganic fibres, or both, impregnated with a phenolic aldehyde condensation product and bonded thereby under heat and pressure, the discontinuity of its face ensures uniform distribution of frictional duty. As applied to cone clutches, the engagement is more progressive. A clutch plate 7 or cone 7' has radial V-shaped or rounded corrugations 8. The corrugations may run circumferentially, spirally, or tangentially, or may be replaced by a chequered surface having square, lozenge-shaped, or other raised areas. The surface may be formed by pressure between rollers or dies, or, if the lining &c. is made of woven material, by grouping a plurality of warps or picks of weft, or by employing coarses warps or wefts at intervals. Conical linings are described in one of the Provisional Specifications as made by endless weaving or by joining the ends of a strip of fabric woven or cut to the required curvature or having tapered ends ; linings made of unwoven fibres may be moulded in endless form or as a straight or curved strip, the ends of which are joined. Reference has been directed by the Comptroller to Specifications 11326/89, 17694/97, 17189/04, 22970/06, 2446/08, 26621/10, 112,501, and 128,712.
Patent GB-240284-A (GB)
Title: Holder for stropping safety razor blades
IPC: B24D15/10
Filed: 1924-09-08
Abstract: 240,284. Lamport, E. J. S., and Willis, A. W. Sept. 8, 1924. Razors, safety. A holder for use in stropping safety razor blades comprises a stem 3 having a pair of rigid jaws 1, 2 between which the blade is inserted and means for applying lateral pressure to the portion of the blade extending beyond the jaws into the stem to hold the blade firmly between the jaws. As shown a semi-cylindrical cone 11 is arranged in the stem 3 and has a pin fixed in its end portion 10 the engaging helical slots in the stem. A milled nut 8, mounted in a screwthreaded sleeve 6 fixed to the stem 3 and handle 4, bears against the ends of the pin 9 and by rotating the nut the rod 10 is slid and rotated to cause the flat side of the cam 11 to press firmly against the side of the blade 13 within the stem and secure it.
Patent GB-919013-A (GB)
Title: Seismic profiling system
Inventor: JOLLY RICHARD NORRIS
IPC: G01V1/20
Filed: 1961-06-13
Abstract: 919,013. Geophysical prospecting. JERSEY PRODUCTION RESEARCH CO. June 13, 1961, No. 21266/61. Drawings to Specification. Class 40 (7). In a seismic surveying system a plurality of seismic detectors is placed in a line along the earth's surface, a first group of seismic impulse points is located in a line extending in the same direction as the line of detectors, seismic impulses are successively initiated at each of the impulse points, energy reflected to each detector is recorded, the line of detectors is extended by transferring detectors from one end thereof to the other, the extension distance being equal to the length of the group of impulse points, the line of impulse points is extended in the direction of detector extension, seismic impulses are successively initiated at the new impulse points, energy reflected to each detector in the new line thereof is recorded, and recorded signals reflected from common depth points are combined, Figs. 1, 2 and 3 (none shown). Static and dynamic error corrections may be applied to the recorded signals.
Patent GB-1045782-A (GB)
Title: A timer
IPC: H01H43/12
Filed: 1965-05-19
Abstract: 1,045,782. Friction and positive clutches. ELECTRICAL REMOTE CONTROL CO. Ltd. May 19, 1965, No. 21284/65. Heading F2C. [Also in Division H2] A friction clutch comprises a gear wheel 2B serving as input plate and a brass disc 6 serving as output plate and having a rubber annulus 7 co-operating with two concentric rings of teeth 8 on gearwheel 2B. A spring (not shown) between wheel 2B and disc 6 urges them apart, disc 6 being fast with a cam shaft 10 (Figs. 1, 2, not shown) carrying switch-operating cams 11 (see Division H2). The clutch 5 is engaged electromagnetically by energizing a solenoid 19 (Fig. 1, not shown) to start a switching sequence as shaft 10 is pushed towards the already rotating gear-wheel 2B by a bell crank lever 17 acting as a cam on shaft 10.
Patent GB-1012318-A (GB)
Title: Processes for obtaining alkaloids of the funtumia species
IPC: C07J75/00
Filed: 1962-06-01
Abstract: The invention comprises (1) a process for preparing 3b  - hydroxy - 20a  - amino - 5a -pregnane (funtuphyllamine) by forming the ketoxime of 3b -hydroxy-20-oxo-5a -pregnane, hydrogenating this in an acid to obtain a salt of 3b  - hydroxy - 20a  and 20b  - amino - 5a -pregnane, separating the salt of the 20a -compound by crystallization in methanol, and liberating the required steroid from the salt by treatment with a base; or by acetylating pregnenolone, hydrogenating the product to give 3b  - acetoxy - 20 - oxo - 5a  - pregnane, forming the oxime thereof, reducing the oxime to give 3b  - acetoxy - 20a  - amino - 5a  - pregnane and saponifying this; (2) a process for preparing N-methyl-funtuphyllamine by formylating funtuphyllamine and reducing the diformyl derivative with lithium aluminium hydride in tetrahydrofuran; (3) a process for preparing N,N-dimethyl funtuphyllamine by methylating funtuphyllamine with formaldehyde and formic acid; (4) a process for preparing 3-keto-20a -methylamino-5a -pregnane (methyl funtumafrine) by oxidizing N-methyl-funtuphyllamine with chromic anhydride/acid; (5) a process for preparing dimethyl funtumafrine by oxidizing dimethyl funtuphyllamine with chromic anhydride/acid; (6) a process for preparing 3b -hydroxy-con-5-enine (funtulatine) by extracting crushed trunk bark of Funtumia latifolia with an organic solvent, vacuum distilling the extract to reduce its bulk, diluting the remaining solution with water, leaving the mixture obtained to stand, filtering the coagulate, mating the filtrate alkaline, extracting with an organic solvent, distilling the extract to dryness and separating the required steroid by chromatography on an alumina column using ether containing 2% of methanol as eluent or by treating conessine by the von Braun method to give isoconessimine, de-aminating this with N-chloro-succinimide to give con-4-en-3-one, forming 3-acetoxy-cona-3,5-diene therefrom and reducing this with sodium borohydride; (7) as a new steroid, 3a -hydroxy-20a -dimethylaminopregn-5-ene (irehine) and a process for preparing it by extracting leaves of Funtumia elastica with an organic solvent and working up as in (6), separation of the required steroid being effected by chromatography on an alumina column using ether containing 10% of methanol as eluent.  Examples are given, and also described are funtulatine acetate, dihydrofuntulatine and acetyl dihydrofuntulatine.  Specification 948,769 is referred to.
Patent GB-1034039-A (GB)
Title: Improvements in or relating to transverse thrust units for ships
Inventor: CARSLAW CHARLES HENDERSON
IPC: B63H25/46
Filed: 1964-05-23
Abstract: 1,034,039. Ship's transverse thrust units. DRYSDALE & CO. Ltd. May 24, 1965 [May 23, 1964], No. 21399/64. Heading B7V. In a transverse thrust unit for a ship incorporating an open-ended trunk formed in the shape of a Venturi and a nozzle device located in the throat of the Venturi and connectible to the discharge ports of the cargo pumps of the ship, said nozzle device is controllable to discharge a jet axially of the trunk in one direction or in the opposite direction.
Patent GB-355901-A (GB)
Title: Improvements in or relating to moisture-proof match igniting composition and matches prepared therewith
IPC: C06F3/00
Filed: 1930-07-15
Abstract: 355,901. Matches. LEDIN, S. H., 34B, Grevturegatan, Stockholm. July 15, 1930, No. 21413. Convention date, July 20, 1929. [Class 50.] A moisture-proof match igniting composition comprises a binder consisting wholly or partly of a solution of cellulose or cellulose derivative, e.g nitro-cellulose as well as a natural or artificial resin to impart hardness. A proportion of the usual glues may be added. Suitably nitro-cellulose dissolved in acetone is employed together with the resin or these may be replaced by waste kinematographic film or celluloid and a mixture of alcohol and benzol. The proportion of cellulose ingredient is preferably 12-20 per cent. To counteract the dissolving out of the chlorate ingredient by moisture a readily soluble salt such as a nitrate with the same positive ion as the chlorate may be added. Or the proportion of the bichromate ingredient may be increased. A protective coating is provided on the match heads of material of the same kind as is used for the binder or if different, e.g. rubber, having one or more solvents in common. Superoxide of lead is preferably included in the oxygensupplying ingredients. Reference has been directed by the Comptroller to Specification 280,764, [Class 50, Fuel, Manufacture of].
Patent GB-614514-A (GB)
Title: Fastening for straps, bracelets and the like
IPC: A44C5/22
Filed: 1946-07-18
Abstract: 614,514. Fastenings. PATTINSON, C. T. LEVY, F., and KING, F. W. July 18, 1946, No. 21513. [Class 44] [Also in Group VII] A fastening particularly for a bracelet comprises a part 1 carrying a resilient bridge-piece 2 near one end, a rounded projection 3 on the bridge-piece adapted to engage one of a row of holes 6 formed in a tongue 5 when this is passed between the bridge and the strip. The projection may be formed by an indentation on the bridge-piece or in a modification on the part 1 underneath the bridge. The strips 1 and 5 may be of resilient.metal such as stainless steel or chromium-plated hard brass and may be bent as in Fig. 1 to receive the bar attachments of a wrist-watch.
Patent GB-1338343-A (GB)
Title: Magnetic heads for data stores
IPC: G11B5/147
Filed: 1972-05-09
Abstract: 1338343 Construction and manufacture of magnetic heads SIEMENS AG 9 May 1972 [10 May 1971 (2)] 21557/72 Heading G5R A magnetic core formed from glued laminations and of a generally rectangular or trapezoidal configuration includes a notch 6, 7 at a corner remote from gap 4, 5, so that core limbs 1, 2; 1, 3 may be moved apart to expand the gap 4, 5 and permit a prefabricated winding (13, 14), Fig. 2 (not shown), to be slipped on the core; a non-magnetic foil of thickness equal to the desired gap width then being inserted into the gap 4, 5 before the core limbs are pressed together again. The gap 4, 5 is initially formed by cutting, the gap faces being finished. To facilitate handling during manufacture, the core includes an extension (8), Fig. 2 (not shown), of approximately twice the size of the core proper, the extension having locating holes (15, 16). The extension (8) is eventually removed by severing at (A-B).
Patent GB-606553-A (GB)
Title: Improvements in and relating to rotating wing parachutes
IPC: B64D19/02
Filed: 1946-07-19
Abstract: 606,553. Rotating wing parachutes. ISACCO, V. July 19, 1946, No. 21678. [Class 4] Relates to improvements in rotating wing parachutes such as those described in Specifications 583,767, 590,612, 592,896, and 606,447. The pitch angle of the blades is adjusted proportionally to the rate of rotation of the blades by a mechanism including a mass rotating with the blades and movable against a retaining force such as that of a spring under the action of centrifugal force. The mass 35, Fig. 3, moves radially under centrifugal force along a blade-carrying fork 14 mounted in ball-bearings on a tube 17 rigidly connected to a fork mounted on horizontal trunnions 20; a rod 34 bearing the mass 35 carries an inclined track 33 engaged by a roller 32 mounted to maintain a fixed position with respect to tube 17 so that as the mass 35 moves radially the roller 32 acts upon the guides of rod 34 to rotate the fork 14 to adjust the pitch angle. The centrifugally-operating mass may be part or the whole of the blade. The fork 14 carries a vertical tube on which rotates a tube 12 bearing a blade which can thus rotate about the axis 8 of the tubes into its active position, upper and lower locking devices on the blades engaging in corresponding catches carried by the fork 14.
Patent GB-156069-A (GB)
Title: Improvements in and relating to lubricating devices
IPC: F16N7/12
Filed: 1920-07-20
Abstract: 156,069. Heitmann, M. J. Dec. 31. 1919, [Convention date]. Addition to 152,638. Capillary-action lubricators.- A movable pin d is inserted in one leg of a siphon lubricating- tube, which has a closed end and lateral inlet openings b as described in the parent Specification. The pin facilitates the flow of lubricant by vibration.
Patent GB-818743-A (GB)
Title: Apparatus for the making of hot beverages
IPC: A47J31/18
Filed: 1957-09-06
Abstract: 818,743. Electric heating. MUIRHEAD, L. A. Sept. 6, 1957, No. 28168/57. Class 39(3) [Also in Group VI] An electrically heated apparatus for for making hot beverages comprises a movable heating element supported so that it can either be immersed in liquid or completely withdrawn therefrom, the movement of the element through the liquid being caused at least partly by the upward force thereon when the liquid boils, one or more springs or weight mechanism reinforcing the movement through the liquid and causing further movement of the element when it is clear of the liquid. Heater element 1 has a gas-tight or nearly gas-tight shroud 1a consisting of a cylinder with a closed top end. Element 1 is carried by supports 1b attached to an arm 2 secured to a spindle 3 on which is secured one end of an arm 5 whose other end is connected by a spring 6 to e.g. an adjustable screw 6a. A cube of meat extract or the like 9 is supported on shoot 8 by a projection 10 carried on arm 2 until the, element is lowered into the liquid whereupon projection 10 is withdrawn and the cube slides down to engage an arrester device 7. This device 7 is pivoted on arm 5 and projects through the shoot when the element 1 is in its lowered position. When the liquid boils and element 1 rises out of it, the device 7 slides back and the meat cube or the like slides into the liquid.
Patent GB-737960-A (GB)
Title: Improvements in or relating to thermostatically actuated valves
IPC: G05D23/13
Filed: 1953-08-07
Abstract: 737,960. Thermally actuated valves. MULLER, J., BAR, K., BAR, P., and MULLER, W. Aug. 7, 1953 [Sept. 19, 1952], No. 21872/53. Class 135. [Also in Group XIII] A thermally-actuated valve comprises a casing with three conduit connections 2 ... 4, two valve seats 5, 6, and a valve closure element consisting of discs 7, 7a joined by webs 8 so that the controlled fluid(s) can flow transversely through the closure element and influence a thermally-responsive member 12 which is housed in the valve element and acts in opposition to a valve loading-spring 9. Member 12 comprises single or multi-layer bimetallic discs, or it may consist of a cylinder and piston, or a cartridge, filled with a thermallysensitive liquid. At its upper end, member 12 abuts against a piston 14, and the temperature at which the valve acts can be adjusted by screwing down a cap 17 abutting against the stem of the piston. The discs 7, 7a are shown as plug and lift closure elements, respectively. Some uses of the valve are described.
Patent GB-351283-A (GB)
Title: Improvements in or relating to rotary kilns for burning cement, ore and similar materials
IPC: F27B7/40
Filed: 1930-07-19
Abstract: 351,283. Rotary kilns. VICKERS. ARMSTRONGS, Ltd., Vickers House, Broadway,. Westminster, and PARKER, L. D., of Vickers-Armstrongs, Ltd., Barrowin-Furness. July 19, 1930, No. 21919. [Class 51 (ii).] In a rotary kiln having external clinker cooling tubes B as described, e.g. in Specification 262,525, [Class 51 (ii), Furnaces and kilns for applying &c.], feed-back of clinker from the tubes to the kiln is prevented by coning or otherwise tapering the inlet ends B<x> of the tubes and providing a lip or barrier B<1x> which, as shown, is an extension of the connecting-passage B<1>. Wear of the passages B<1> by the clinker is minimized by setting them at such an angle, say 10‹, to the radial direction that the material will fall without substantial contact with the sides. The part b<x> of the tapered end of the tube on to which the material falls is made renewable. The material is fed through the tubes B by sets of helical blades B<2>, B<3> of fine and coarse pitch respectively.
Patent GB-970932-A (GB)
Title: Improvements in or relating to the coating of webs
IPC: B29C43/12
Filed: 1960-10-03
Abstract: 970,932. Laminates and laminating. OWENS-CORNING FIBERGLASS CORPORATION. Oct. 3, 1960 [Oct. 2, 1959], No. 21930/64. Divided out of 970,931. Heading B5N. A porous web is provided with a surface film of a synthetic thermoplastic polymer by first disposing the film in contact with a surface of the web, heating the film to soften it, drawing the film into intimate contact with the web surface by applying suction to the other surface of the web, and cooling the film whilst maintaining suction. The web may be a board or sheet or a loose aggregate of material disposed to form a layer, preferred materials being fibrous glass or open-celled foamed plastics. The film may, e.g., be polyethylene or a vinyl resin such as polyvinyl chloride. Glass fibres may be supplied from a forehearth and form into a mat 145 on a conveyer 140. A suction chamber 142 assists compaction of the fibres into a layer which passes between rolls 150 where it meets a thermoplastic film 147 and the two layers then pass below heating elements 152 which heat the film to a semi-fluid state; they then pass over a suction chamber 156 which draws the film against the web. The suction may be supplemented by pressure and in either case the film may be perforated by the air pressure. The roll 159 presses the film on to the surface further and cools it whilst suction is maintained. Further rolls 160 and 161 provide further cooling. An inspection box 163 casts up a light'through the web. A film may be applied also to the other surface of the web. Cut strands or rovings of glass fibres may be used instead of the loose fibres, or a board of glass fibres or other particles held together by a resinous or other binder may be used as the porous web. In such cases the thermoplastic film will not bond the fibres as it does with the thin mat previously described, but will merely coat the surface.