baber/WOPTO huggingface dataset:
Patent GB-878984-A (GB)
Title: Cam-disc arrangement for sewing machines
IPC: D05B19/00
Filed: 1957-12-27
Abstract: 878,984. Securing cams on shafts. SINGER MANUFACTURING CO. Dec. 27, 1957 [Jan. 24, 1957], No. 4314/60. Divided out of 878,983. Class 80 (2). Cams 21 ... 27 arranged in a stack and used in an ornamental stitch sewing machine are located circumferentially relatively to each other by a pin 34 passing through holes 36 therein, tightening screws 33 received in tapped holes in a sleeve 17 rotating about a fixed stud 18 gripping the cams frictionally between a capping plate 31 and a shoulder 19 on the sleeve, an additional cam 68 having a hole 71 receiving the end of the pin 34 and being detachably retained on the capping plate by a spring 58. The arrangement is such that the operator of the sewing machine can grasp a knob 73 integral with the cam 68, pull the cam away from the stack of cams 21 ... 27 and replace it with another cam 68 having a different profile. The spring 58 is retained freely against the capping plate 31 by a screw 43 threaded into a tapped hole 51 in the fixed stud 18.
Patent GB-1055864-A (GB)
Title: Improvements relating to feeders for arc welding,cladding,overlaying or the like
IPC: B23K9/32
Filed: 1965-02-02
Abstract: 1,055,864. Welding by fusion. R. F. ARNOLDY. Feb. 2, 1965, No. 4415/65. Heading B3R. In a feeder for use in arc welding or weld over-laying and in open arc, series arc, submerged arc and gas shielded welding and the like the amount of a particulate welding material, which may be powdered alloys, flux or gas generating material, supplied to a discharge nozzle 110 from individual containers 24a, 24b and 24c is controlled by the rate of feed of the electrode. Movement of the electrode drives a contact driving wheel 84 (Fig. 1, not shown) which drives, through axle members 38a, 38b and 38c, feed wheels 34a, 34b and 34c. These feed wheels scoop up the particulate material from collector pans situated beneath the containers 24a, 24b and 24c and deliver it to tubes 36a, 36b and 36c leading to a nozzle 110. The feed wheels have peripheral pockets for scooping up the particulate material and by substituting wheels with different size and number of pockets the required amount of particulate material can be delivered. The individual containers 24a, 24b and 24c and the axle members 38a. 38b and 38c are all releasably connected together to allow for adjustment; repair and replacement of components. The nozzle 110 comprises a central passage for the electrode surrounded by concentric annular spaces to which are connected the tubes 36a, 36b and 36c.
Patent GB-979511-A (GB)
Title: Improvements in or relating to magnetic flywheels for flywheel magnetos
IPC: H02K1/27
Filed: 1963-02-04
Abstract: 979,511. Ignition generators. R. BOSCH G.m.b.H. Feb. 4, 1963 [Feb. 23, 1962], No. 4427/63. Addition to 908,689. Drawings to Specification. Heading H2A. A magnetic flywheel for a flywheel magneto as described in the parent Specification wherein the edge of the synthetic resin sheath enclosing the axial free end face of the individual magnets is at least partly straight.
Patent GB-1153981-A (GB)
Title: Sheet materials having in part an openwork structure.
Inventor: DOW JAMES
IPC: B29D7/00
Filed: 1966-02-02
Abstract: 1,153,981. Net-like thermoplastic sheets. SMITH & NEPHEW PLASTICS LTD. 30 Jan., 1967 [2 Feb., 1966] No. 4521/66. Headings B5A and B5B. A thermoplastic sheet material, having, in part, an openwork structure, is made by subjecting a predetermined area of a sheet which carries a regularly spaced relief or recessed pattern, or a regularly spaced pattern of perforations, to a stress in two directions simultaneously, while protecting the remainder of the sheet from the effects of the stress. The sheet may be, e.g. polyethylene or polypropylene. The " remainder " of the sheet may be protected by: (a) having no pattern or perforations on it; (b) positioning the remainder in clamps while stretching the sheet; (c) coating it with a surfactant (e.g. in a pattern); (d) laminating it to strips of the same or a different sheet to strengthen it; and (e) forming the sheet so that the remainder is thicker than the areas which are to form the openwork structure. The final sheet may be heat-stabilized.
Patent GB-907781-A (GB)
Title: Improvements relating to methods of separating from acetylene obtained by cracking of gaseous hydrocarbons other unsaturated hydrocarbons formed in the cracking, particularly allene
Inventor: PATRON GERMANO
IPC: C07C7/171
Filed: 1959-02-10
Abstract: Acetylene is purified to remove other unsaturated hydrocarbons by contact with sulphuric acid of concentration by contact with sulphuric acid of concentration greater than 95% by weight and containing aluminium sulphate in a concentration not lower than 0.001% by weight of the sulphuric acid.
Patent GB-101126-A (GB)
Title: Improvements in or relating to Reinforced Concrete Bases for Poles.
Inventor: WADE HAROLD
IPC: E04H12/22
Filed: 1916-03-30
Abstract: 101,126. Wade, H., (Internationale Sicgwartbalken-Ges.). March 30, 1916. Posts. - Reinforced - concrete bases for poles are made sickle-shaped in cross-section, as shown in plan in Fig. 4, and strengthened by a number of parallel superposed wire loops 6 shaped to suit the section. Longitudinal strengthening- rods 7 are secured to transverse stiffeners 10, 11. The base is formed with a projection 3 for supporting the wooden pole 4.
Patent GB-980821-A (GB)
Title: Apparatus for the electro-magnetic propulsion of vehicles
IPC: B60L13/03
Filed: 1960-02-10
Abstract: 980,821. Electric railway systems. G. T. W. HUNT. May 8, 1961 [Feb. 10, 1960], No. 4771/60. Heading B7L. [Also in Division B8]  A vehicle, e.g. a railway locomotive, a vehicle for launching a rocket or missile from a track, a conveyer belt or a shuttle for a loom, is propelled by means of a system comprising an inductor member consisting of a ferrous bar 13, having a pair of non-ferrous bus - bars 14 attached to its sides interconnected by non- ferrous transverse bars 15 embedded in the ferrous bar at spaced intervals, and a second inductor member 6 mounted on the vehicle so as to leave a narrow gap 16 between itself and the first conductor member, the second inductor member consisting of a single slotted bar 7 having a number of teeth 8 in the slots 9 between which is wound a three-phase winding 10 energized by a three-phase electric current which, in the locomotive shown, is supplied by a collector 2 in contact with overhead wires 3. The current supplied to the winding 10 sets up a travelling field along the length of the bar which induces magnetic fields in the track member, the interaction between the field causing a force parallel with the rails propelling the vehicle along. The current for an electric locomotive may alternatively be supplied by a diesel-generator
Patent GB-1515784-A (GB)
Title: Cylinder-head gasket
IPC: F16J15/10
Filed: 1976-02-06
Abstract: 1515784 Gaskets GOETZEWERKE FRIEDRICH GOETZE AG 6 Feb 1976 [7 Feb 1975] 04776/76 Heading F2B A cylinder head gasket comprising a sheet 2 of porous fibrous material, e.g. asbestos, with through passages 5 for combustion chambers, lubricant and coolant and having the whole or part of its faces impregnated with, e.g. polymeric material, is characterized in that the distribution of the impregnating agent 8 through the cross-section of the sheet is the same adjacent some or all of the surfaces 6 bounding the through passages 5 as it is in other impregnated regions of the sheet, as a result of the bounding surfaces 6 having been covered with a protective coating 7 before the impregnating of the sheet 2. The protective coating 7 may be of synthetic resin, rubber, waterglass or plastics foil. The gasket is shown in the embodiment with metallic reinforcement 4.
Patent GB-499544-A (GB)
Title: Improvements relating to film feed mechanism for photographic roll film cameras
IPC: G03B19/04
Filed: 1938-02-16
Abstract: 499,544. Photographic roll-film cameras. FRANKE, P., and HEIDECKE, R. Feb. 16, 1938, No. 4852. Convention date, Feb. 20, 1937. [Class 98 (i)] In film feed mechanism which is automatically locked, on completion of each picture length, by a pawl which may be released by a cam by a reverse movement of the winding handle, the cam acts on the pawl through an intermediate lever which is only operative during the reverse rotation of the winding handle. In the form shown, the winding handle rotates a ratchet wheel 1 and a cam 3, and also, after winding the backing paper at the commencement of each spool, the notched wheel 7 (through gearing not shown). The pivoted member 8 has a projection. 8a to engage the notches on the wheel 7, and a tooth Sb to engage the ratchet wheel 1. It also carries a pivoted lever 12 which is held by a spring 12a against a projection 10 and itself has a projection 13. As the winding handle is rotated forward, the projection 13 is engaged in the enlarged end 5 of a groove 4 and is pulled down thereby so that the portion 6 of the cam 3 is not obstructed. When one of the notches in the wheel 7 moves under the projection 8a, the tooth 8b engages the ratchet wheel 1 to lock the winding mechanism. A reverse rotation of the handle however causes the projection 13 to ride up on the end 3a of the cam, and the notch 8a to be released from the wheel 7 to allow a further section of film to be wound.
Patent GB-384846-A (GB)
Title: Improvements in imitation leather
IPC: B44F9/12
Filed: 1932-02-18
Abstract: 384,846. Photo-mechanical printing surfaces. DEHN, F. B., 103, Kingsway, London.-(Decorative Development, Inc. ; 444, 12th Street, Brooklyn, New York, U.S.A.) Feb. 18, 1932, No. 4879. [Class 98 (ii).] Ornamental material in imitation of leather provided with distinctive markings, such as that produced from the skins of reptiles or other animals, or from the skins of goldfish, is manufactured by arranging triangular, rectangular, or polygonal pattern units in end-to-end as well as in side-to-side relation to provide a continuous pattern having corresponding design parts in juxtaposition, and reproducing the pattern on a sheet of material such as calfskin leather. As shown, from a rectangular portion 11 of a lizard skin 10, Fig. 1, four unit patterncopies are reproduced comprising (1) a copy A, Fig. 2, similar to the portion 11 ; (2) a copy a the same as A but inverted ; (3) a copy A<1>, Fig. 4, such as would be seen in a mirror after swinging a through 180‹ about its top edge, and produced, for instance, by inverting and rotating a negative prior to application to a sensitized lithographic plate or stone ; (4) a copy a<1> the same as A<1> but inverted. Repeats of these four units are arranged as shown in Fig. 5 so that corresponding design parts, as illustrated by the corner numerals I .. IV, are adjacent throughout, and the complete design is transferred by photomechanical, e.g. photolithographic, printing, on to leather previously coated with celluloid or cellulose lacquer. The pattern units may be multicolour copies and may be painted by hand or produced mechanically or photomechanically. The copies need not be faithful representations of the original, and may be deliberately modified.
Patent GB-1022798-A (GB)
Title: Toy vehicles
Inventor: WATTS JOHN CARDEN JEFFERY
IPC: A63H17/26
Filed: 1965-02-04
Abstract: 1,022,798. Toy vehicles. S. GUITERMAN & CO. Ltd. Feb. 4, 1965, No. 4886/65. Heading A6S. A toy vehicle has wheels W movable upward against springs 6 mounted on a chassis 1 and located transversely by slots in bars 12 and each spring is held against longitudinal displacement by engagement with a projection 8. The springs 6 comprise common or garden paper clips.
Patent GB-545371-A (GB)
Title: Improvements relating to convertible furniture
IPC: A47C17/165
Filed: 1941-04-17
Abstract: 545,371. Bed-settees &c. CO-OPERATIVE WHOLESALE SOCIETY, Ltd., and NASH, C. April 17, 1941. No. 4994. [Class 52 (ii)] In a bed-settee or bed-chair, the seat portion 6, Fig. 1, is fixed to the framework, the back is made of two parts 7, 8 of equal size connected to the seat portion and to one another by hinges 20, 21, stops 9 are provided on the back part 8 to engage behind a cross rail 3, and a pair of curved legs 10 are fixed to the back part so as to extend below the seat. In opening out the settee for use as a bed, the two back parts 7, 8 are first rocked forwardly about the hinge 20 to permit the curved legs 10 to clear the cross rail 3 as the parts 7, 8 are straightened out, and the legs are brought to the floor as shown in Fig. 3. At the same time, webbing 12 brings two hinged struts 11 into supporting position. A hinged flap 14 closing a cupboard for storing a mattress may be raised to the position shown in Fig. 3 and retained therein by struts 15 in order to serve as a pillow rest.
Patent GB-1362088-A (GB)
Title: Chuck for machine tools
IPC: B23B31/18
Filed: 1972-02-03
Abstract: 1362088 Chucks WERKZEUGMASCHINEN KOMBINAT 7 OKTOBER BERLIN VEB 3 Feb 1972 5048/72 Heading B3B A chuck comprises two base jaws 3 swingably mounted in a body 1, as double arm levers the clamping movement being effected by displacement of a plunger 2 provided with a cam surface, a spring loaded gripping jaw 10 mounted in each base jaw 3 and radially slidable therein, a spring loaded piston 6 mounted in a cylinder 7 in each base jaw for movement parallel to the chuck axis, and a releasable and re-settable connection 13 between each piston 6 and its respective clamping jaw 10. Pressure medium, e.g. hydraulic fluid, is passed via a programme controlled unit and ducts 5 in swivel pins 4 to the cylinders 7. The connection 13 is provided by teeth in the piston 6 and gripping jaw 10. In operation the gripping jaws 10 are pre-set under automatic control at a radial distance to suit a batch of workpieces 15 by releasing the connection 13, rotating the chuck so that centrifugal force moves the gripping jaws 10 outwards against springs 11, re-engaging the piston 6 with the gripping jaws, stopping the rotation, inserting a workpiece in the chuck, i.e. between a centres, and releasing the connection 13 so that the springs 11 move the gripping jaws 10 to engage the workpiece. The workpiece is then clamped by the plunger 2 pivoting the base jaws 3.
Patent GB-1155151-A (GB)
Title: Improvements relating to Devices For Tying The Ends Of Yarns
IPC: B65H69/04
Filed: 1967-02-02
Abstract: 1,155,151. Knot-tying device. ZELLWEGER Ltd. 2 Feb., 1967 [15 April, 1966], No. 5091/67. Heading D1C. In a knot tying device in which a yarn gripper 7 moves around a stationary mandrel 6 and approaches the mandrel axis, the rate of approach corresponds to the rate of winding yarn onto the mandrel. This prevents yarn being pulled through the gripper. The gripper is pivotally mounted by an arm 13 at one end of a rotatable sleeve, and makes three revolutions about the mandrel for each revolution of the main shaft 5. The opposite end of the sleeve has a groove 26 in which a fork 27 is engaged. A cam 30 acting via a bolt 28 and the fork 27 displaces the sleeve, and hence the gripper axially of the mandrel. The end 14 of arm 13 is urged against arm 15 also pivoted on the sleeve. The end 19 of the arm 15 engages in a cam track of wheel 20 which is so designed that the part of the mandrel onto which the yarns are wound forms the evolute of the path followed by the gripper. The gripper thus approaches the mandrel at the desired rate.
Patent GB-1023822-A (GB)
Title: Improvements relating to the manufacture of finned tubing
Inventor: CHAPMAN THOMAS EDWIN
IPC: F28F21/08
Filed: 1961-02-10
Abstract: 1,023,822. Fuel elements. FAIREY ENGINEERING Ltd. May 10, 1962 [Feb. 10, 1961], No. 5144/61. Heading G6C. [Also in Divisions B3 and F4]  The subject matter of this Specification is identical with that described in Specification 1,023,823 but the claims relate to a method of making a finned tube intended for use as a fuel can for a nuclear reactor.
Patent GB-362774-A (GB)
Title: Improvements in or relating to cans or like metal containers
IPC: B65D45/32
Filed: 1931-02-19
Abstract: 362,774. Cans &c. ARMSTRONG, J. J. V., 12, Church Street, Liverpool.- (Continental Can Co., Inc.; 100, East 42nd Street, New York, U.S.A.) Feb. 19, 1931, No. 5221. [Classes 66 and 125 (iii).] A dished cover 7, fitting frictionally over the beaded mouth of a can or like metal container, is sealed in place by means of a sealing ring 14, the lower edge of which is turned inwardly at 19 to clamp an annulus of sealing material 13 against the doubled flange 10, 11 of the cover and a shoulder 6 on the body of the can. In the form shown in Fig. 6 the shoulder is provided by the lower part of the offset bead 4. The sealing ring is broken by pulling a tab to enable the sealing material to be removed.
Patent GB-1343671-A (GB)
Title: Photoconductive imaging member
IPC: G03G5/09
Filed: 1971-02-24
Abstract: 1343671 Photo-conductive imaging member XEROX CORP 24 Feb 1971 5286/71 Headings G2C C17C1 and C17D1 A photo-conductive imaging member comprises a layer of photo-conductive particles dispersed in an electrically active organic matrix material, the particles being capable of producing photo-generated holes and the matrix material being capable of supporting hole injection from the particles and transporting the holes. Preferably, the photo-conductive particles are present in an amount 0À1 to 5 vol. per cent of the layer. In the specific embodiments a layer of X-form metal-free phthalocyanine, a polynuclear aromatic quinone, cadmium sulphoselenide, or crystalline trigonal selenium as the photo-conduce particles and polyvinyl carbazole or poly-1-vinyl pyrene as the matrix material, is formed on an aluminium substrate which has optionally been provided with a blocking layer of nylon or epoxy resin. Alternative substrates are specified including insulating substances. A self-supporting layer may also be formed. Other materials for the particles and the matrix material are specified.
Patent GB-1174005-A (GB)
Title: Improvements in or relating to Internal Reflection Elements
IPC: G01N21/55
Filed: 1967-02-03
Abstract: 1,174,005. Optical apparatus. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Feb.3, 1967 [Feb.4, 1966], No.5335/67. Heading G2J. An element for use in A.T.R. spectroscopy is coated with a thin film 2, Fig. 2, of low refractive index and a second film 3 of high refractive index so that a beam 10 coming through the element is partially reflected at interface R 1 ,  3  as beam 22 and partially transmitted as beam 18. On reaching the interface R 3,4 . the beam 18 interacts with the sample 4 and returns as beam 20 for further splitting up at interface R 1,3 . into beams 22<SP>1</SP>, 18<SP>1</SP>, so that the initial beam has a portion forming multiple reflections in the layer 3 and thus enhancing the absorption which is characteristic of sample 4. By arranging the reflectivity of interface R 1,3  to match that at interface R 3,4  and controlling the phase of components 22<SP>1</SP> so that they are 180 degrees out of phase with component 22, by suitably dimensioning the films 2, 3, and using polarized light, substantially complete absorption can be achieved at a wavelength characteristic of sample 4.
Patent GB-529575-A (GB)
Title: Improvements in or relating to the finishing of leather
IPC: C14C11/00
Filed: 1939-02-17
Abstract: 529,575. Finishing leather. COTTON, A. F. R. Feb. 17, 1939, No. 5377. [Class 76] Leather is finished by contracting the fibres by the application of heat at 240‹F. to 600‹F., preferably between 250‹F. to 400‹F., by means of a heated pressure member having a porous and soft or resilient surface applied to one side or in succession to both sides at a pressure up to ten lbs., e.g., 4 to 6 lb. per sq. in.
Patent GB-525340-A (GB)
Title: Improvements in and relating to electric hoists
IPC: B66D3/22
Filed: 1939-02-17
Abstract: 525,340. Electric hoists. YALE & TOWNE MANUFACTURING CO. Feb. 17, 1939, No. 5406. Convention date, Oct. 20, 1938. [Class 78 (v)] An electric hoist comprises a winding drum 25 keyed to a sleeve 22 carrying a pinion 28 which is driven through gearing 30, 34, 36 from a co-axial shaft 21 coupled to a motor shaft 19. The pinion 34 is internally threaded to ride on its shaft 35 against a friction disc 33 which carries a pinion of the gear train, gripping in this action a ratchet wheel 31 held by a spring- pressed pawl 32, which normally sustains the load when the motor stops. On reversing the motor the pinion 34 retracts from the disc 33, thus freeing the wheel 31 and allowing the load to fall. A rate of fall greater than that determined by the motor speed will, however, result in the disc 33 and pinion 34 being brought toward one another again, with binding of, and effective pawl action on, the wheel 31. The outer end of the shaft 21 carries the drum 37 of a band brake, the bands being normally spring- pressed on to the drum exterior, but having their ends forceable apart. by a cam 40 on a shaft 45 rockable by the core 43 of a solenoid in the motor circuit. The inside of the brake drum 37 is furnished with vanes which draw air in through louvres 47 to cool the drum and adjacent parts, an exhaust vent 47a being provided below the casing. The hoist has bolt-eyes 11 for suspension from a trolley, and the cable 48 passes round a sheave 49 for attachment to the drum casing. Hand-operated switches control the motor and brake solenoid, and a pivoted lever 55 extends across the path of the rising sheave to shut off the power automatically at the end of the wind.
Patent GB-736825-A (GB)
Title: Improvements in or relating to reducing agents intended to be incorporated in thermite mixtures
IPC: C22B5/06
Filed: 1953-02-26
Abstract: An improved reducing agent for a thermite mixture consists of carbon (coke or charcoal) particles coated with lithium.  The process is carried out at 800 DEG  C. for 30 minutes in a steel retort out of contact with air.ALSO:A thermite mixture (mixture of reducing agent, aluminium, silicon, carbon, charcoal or coke, in fine grains or filings with an oxide or equivalent compound) employs an improved reducing agent in which the surface of the grains is coated with lithium which speeds up the reaction.  The coating is effected by mixing the reducing agent and the lithium both in the form of fine powder and heating in the absence of air.
Patent GB-475391-A (GB)
Title: Improvements in or relating to fuel injection pumps for internal combustion engines
IPC: F02M59/26
Filed: 1937-02-23
Abstract: 475,391. Fuel-injection pumps. YAMASHITA, O. Feb. 23, 1937, No. 5481. [Class 102 (i)] A fuel-injection pump has a suction port 9 which has a non-return valve 10 and communicates with the upper part of the pumping chamber 1. The plunger 3 has a recess 6 bounded by a helical surface 61 and a groove 7 connects the recess 6 to the pumping chamber 1. Delivery commences when the end 4 of the plunger closes the port 11 and ceases when the edge 6<1> opens the port 12. The byepass ports are connected to a passage which has a non- return valve 13.
Patent GB-1189751-A (GB)
Title: Liquid Dentifrices Containing Abrasives
IPC: A61K8/73
Filed: 1968-02-05
Abstract: 1,189,751. Liquid dentifrice. COLGATEPALMOLlVE CO. 5 Feb., 1968 [6 Feb., 1967), No. 5690/68. Heading ASB. A liquid dentifrice preparation comprises a stable homogeneous and pourable suspension of an abrasive material in a liquid vehicle containing, as suspending agent, 0.3 to 2.0% by weight of a polysaccharide of high molecular weight (>1,000,000) containing mannose, glucose, potassium glucoronate and acetyl in the approximate molar ratio 2:1:1:1. Conventional additives e.g. anticariogenics surfactants, flavours, additional solvents such as glycerol and alcohol and sweeteners may also be present. Numerous conventional abrasives are specified.