baber/WOPTO huggingface dataset:
Patent GB-971680-A (GB)
Title: Machine for cutting and sealing a web of thermoplastic material
IPC: B26D1/04
Filed: 1963-02-15
Abstract: 971,680. Seaming non-metallic sheet material; cutting webs; making flat plastics bags. NATIONAL DISTILLERS & CHEMICAL CORPORATION. Feb. 15, 1963 [Feb. 15, 1962], No. 6307/63. Headings B4B, B5D and B5K. A machine for cutting and sealing a web W of tubular thermoplastic stock which is fed along a path to a cutting and sealing location A, comprises opposed cutting blades 82, 84 disposed above and below said feed path and mounted to move towards each other into a cutting, position along said feed path to cut the web W and opposed sealing blades 86, 88 disposed above and below said feed path and mounted to move towards each other into a sealing position along said feed path to seal the web W along an area B contiguous to and coextensive with the cut edge. In a machine for forming bags, the web W, preferably comprising superposed layers l 1 , l 2  of polyethylene, is fed intermittently by two driven rollers 20, 22. Each roller 20, 22 carries a sheath 26, 30 on its shaft 24, 28, the sheath 26 being formed with circumferential grooves 26a opposed to grooves 30a in the sheath 30. The rollers 20, 22 are urged together by adjustable-pressure springs 40, 48 acting on the bearings 38, 46 of the roller 22. The roller 22 is connected by gears to the roller 20 which is driven intermittently by a chain 54. The ends 58a, 60a of air tubes 58, 60 extend through the grooves 26a, 30a, respectively, and terminate short of the location A so as to entrain successive lengths of the web W in compressed air jets. The cutting blades 82, 84 are mounted on bars 74, 76 on work heads 66, 68 mounted on parallelogram linkages 70, 72. The sealing blades 86, 88 heated by elements 142, 144 are also carried by the heads 66, 68. To cut the web W, the blades 82, 84 are advanced towards each other by a double-acting piston-and-cylinder 114 rotating a lever 124 anticlockwise so that links 128, 130 actuate the linkages 70, 72, respectively. During the initial advance of the blades 82, 84 but before cutting takes place, a cylinder 140 is actuated to urge the blade 84 into wiping or rubbing contact with the blade 82 which is formed with upstanding projections 82a, Fig. 6, to engage the blade 84 in its retracted position, the blade 84 being pivotally supported on a rocker arm 132. After cutting, the pressure in the cylinder 140 is released so that the blade 84 clears the blade 82. After cutting, the heads 66, 68 continue to approach each other and the blades 82, 84 begin to overlap each other and are progressively displaced away from the location A. The blades 86, 88 come into contact with the web W for a predetermined dwell time, a predetermined gap being established between the sealing faces thereof by adjustable stops 150, 152. The heads 66, 68 are then retracted.
Patent GB-536934-A (GB)
Title: Improvements in vacuum pumps
IPC: F01C21/08
Filed: 1940-04-08
Abstract: 536,934. Rotary vacuum pumps. BEACH, E. J. April 8, 1940, No. 6337. [Class 110 (ii)] The diametrical, vane 13 is divided into two equal parts, Fig. 4, separated by a shim 23 which can be replaced by a thicker one to compensate for wear. Packing strips 65 in the rotor and vane end packings 22 are subject to the fluid pressure in front of the vane admitted by ports 67, 62. An arcuate inlet port 17 is cut in the stator end wall and co-operates with ports 16 in the vane which communicate with chambers 14 and a series of oblique ports 15. Delivery is through two spring-pressed valves 40, 41 in series. The valve 40, Fig. 5, comprises a valve plate 48, guided by spring-pressed pins 49, and a plate 53 of thin metal guided by pins 53<1>. One end of the working chamber is provided by a disc backed by lubricating oil at atmospheric pressure. Any pressure above atmospheric in the working-chamber displaces the disc and is thereby relieved.
Patent GB-1039776-A (GB)
Title: Improvements in shuttleless looms
IPC: D03D47/40
Filed: 1964-02-14
Abstract: A tucked-in selvedge is formed by a hook which enters the open shed to take a cut end of weft from a weft inserter before the latter emerges from the shed.  The hook has a springy blade to grip the weft so that it is kept under tension throughout the operation.  When the pick has been beaten up, the hook enters the fresh shed to tuck in the end of the weft.  The shank of the hook is flat and has a twist in it, so that as it slides through a guide slot during its endwise movement into and out of the shed, it is also turned about its axis.
Patent GB-570869-A (GB)
Title: Improvements in or relating to the manufacture of halogen-substituted alkenes
IPC: C07C17/275
Filed: 1943-04-21
Abstract: Terminally halogen-substituted alkenes are prepared by reacting a 1,3-diene or 2,5-dihydrothiophene-1-dioxide with at least the molecular equivalent of a polyhalo-ethane or methane having at least two halogen atoms attached to one carbon atom, at an elevated temperature, in the presence of an iron-containing substance, and a peroxygen compound or a polyhydroxybenzene or both.  The polyhydroxybenzene is essential unless freshly distilled polyhalo-compounds are used.  A pressure vessel may be charged with the freshly distilled halo-compound, e.g. carbon tetrachloride, 2,5-dihydrothiophene-1-dioxide, which forms the 1,3-diene in situ, a diacyl peroxide or ammonium or alkali metal persulphate, pyrogallol, and a solvent for pyrogallol such as ethanol.  After heating for 4-6 hrs. at 60-150 DEG  C., the mixture is cooled, sulphur dioxide blown off, steam distilled, and the products separated.  An iron or steel vessel may be used or iron filings or ferric chloride added. Peroxygen compounds include acyl, e.g. acetyl, propionyl, lauroyl and benzoyl peroxides, persulphates, perborates, and percarbonates, and peroxides of hydrogen, diethyl, cyclohexanone and tetrahydronaphthalene, and ascaridole.  Other polyhydroxybenzenes specified are hydroquinone, resorcinol and catechol.  A molecular excess of polyhalo-compound over the diene is generally used and the molar ratio may be up to 10 : 1.  Inert solvents, e.g. saturated aliphatic or cycloaliphatic hydrocarbons, and ethers, water, alcohols, ketones and aromatic hydrocarbons may replace part of the excess of poly-halo compound.  The presence of small amounts of atmospheric oxygen is sometimes permissible.  Polyhalo-ethanes or methanes specified are carbon tetrachloride or tetrabromide, chloroform, bromoform, iodoform, methylene chloride, bromide, iodide or chloriodide, hexachlorethane, 1,1-dichlorethane and 1,1,1-trichlorethane.  1,3-Dienes include butadiene, 2-chlor-, 2-methyl- or 2-cyano-1,3-butadiene, and 2,3-dimethyl - 1,3 - butadiene.  The corresponding 2,5-dihydrothiophene-1-dioxides, prepared by reacting the 1,3-dienes with sulphur dioxide, give better yields.  The products may be used as solvents or as plasticizers and softeners for cellulose derivatives and resins. Examples describe the reaction of 2,5-dihydrothiophene-1-dioxide and carbon tetrachloride to yield 1,1,1,5 - tetrachlorpentene - 3. Higher boiling products, chiefly tetrachlornonadiene, may also be formed.  A steel or stainless steel or, when iron or ferric chloride is added, a silver-lined reactor is used.  The additional catalyst is benzoyl peroxide or pyrogallol or both.  A further example employs 1,3-butadiene.
Patent GB-710912-A (GB)
Title: Improvements relating to drying apparatus
Inventor: MARTIN ERNEST JAMES
IPC: F26B25/00
Filed: 1952-03-12
Abstract: 710,912. Drying apparatus. TEMPLEWOOD ENGINEERING CO.. Ltd. Feb. 12,. 1953 [March 12, 1952], No. 6423/52. Class 34(2) [Also in Group XXX] Apparatus for drying grass and comprising a casing 1 in which travels an endless conveyer 5 over a perforated support 4, the grass being carried along the upper run of the conveyer 5 and then moved back along support 4 by tines 9 on the conveyer while hot air is blown into casing 1 from a furnace 2 by a fan 3, is converted for grain drying by the provision of feeding mechanism to supply grain from a hopper to the support 4. A grain hopper 13 feeds an elevator 14 discharging to a screw-conveyer 15 which in turn discharges to a hopper 16 having a screw conveyer 17 and a slot through which grain discharges on to the support 4, surplus grain being returned to hopper 13 by screw 17. Removable plows 19 hinged to conveyer 5 distribute the grain. as a bed on support 4 where it is dried by the hot air and is discharged over inclined plate 27 to screw conveyer 6 and removed by elevator 28. Insufficiently dried grain can be returned from the elevator 28 to hopper 13.
Patent GB-488589-A (GB)
Title: Improvements in labels, stamps and like articles
IPC: G09F3/02
Filed: 1937-03-05
Abstract: A ticket, label, stamp or the like is printed on one side and on the other side is coated with an adhesive containing a substance such as sodium salicylate which, when the ticket is removed from a surface to which it has been stuck, will leave on the surface substantially invisible traces which can be made visible by exposure to Röntgen or ultra-violet radiation.  The Specification as open to inspection under Sect. 91 refers also to the use of indicators such as Congo red, which give a colour change by a chemical test.  This subject-matter does not appear in the Specification as accepted.
Patent GB-180090-A (GB)
Title: Improvements in thermionic cathodes and methods of making the same
IPC: H01J9/04
Filed: 1921-02-28
Abstract: 180,090. Western Electric Co., Ltd., (Western Electric Co., Inc.). Feb. 28, 1921. Drawings to Specification. Alloys; metals powdered, obtaining coherent masses from.-Platinum and nickel are alloyed in the proportions 95 per cent platinum and 5 'per cent nickel. A small amount of iridium and rhodium may be added. Instead of platinum, palladium, osmium, rhodium, iridium or ruthenium, may be used and cobalt may replace nickel. The powdered metals are pressed in a die to form an ingot, which is fused or sintered in a refractory crucible in an electric furnace, by means of a coil heating the ingot inductively to a temperature. of 1500‹ to 1800‹ C.; or the ingot may be clamped between two electrodes in a bell-jar and heated by passage of current. The vacuum is preferably from 0.01 to 0.001 mm. of mercury. The ingot is then cold fodged, swaged and drawn to form a wire or ribbon. Annealing is carried on between these operations. Any oxide formed on the wire can be broken down by heating in a vacuum for a few minutes.
Patent GB-416018-A (GB)
Title: Electrolytic condensers with fuses
IPC: H01G2/14
Filed: 1933-03-04
Abstract: 416,018. Electrolytic condensers. ELEKTRIZITATS - AKT. - GES. HYDRAWERK, 32, Drontheimerstrasse, Berlin. March 4, 1933, No. 6677. Convention date, March 5, 1932. [Class 37.] An electrolytic condenser is provided with one or more safety fuses 3, 4 mounted internally of or externally on the condenser casing. The fuses which are provided with means for indicating when they blow out are located on a cover-plate 2 of insulating material or are sunk in the filling material inside the casing.
Patent GB-555957-A (GB)
Title: Improvements in or relating to apparatus for mixing concrete and other similar materials
IPC: B28C5/18
Filed: 1942-05-18
Abstract: 555,957. Mixing-apparatus.. BLAW KNOX, Ltd., and CONACHER. J. E. May 18, No. 6731. [Class 86] In a . mixing-apparatus of the Kind in which a rotating drum A has its longitudinal axis somewhat inclined to the horizontal, a number of buckets B are spaced around the inside of the drum and staggered in different rows. One or more annular baffle plates P may be provided, and a sealing plate F may be carried by the discharge shoot E to prevent the mix from being splashed through the discharge opening. The drum is supported on rollers H, mounted on a frame C, which is pivoted at Q to a lower frame R, and can be adjusted about this pivot by a pivoted screw S working in a lug W.
Patent GB-478920-A (GB)
Title: Improvements in traction wheels
IPC: B60B15/02
Filed: 1937-03-08
Abstract: 478,920. Vehicle wheels. INTERNATIONAL HARVESTER CO. OF GREAT BRITAIN, Ltd. (International Harvester Co.) March 8, 1937, No. 6783. [Class 144 (i)] The runs of tractor and like wheels are formed on one or both sides with a coned portion 19 to seat lugs 20 of conical or pyramidal form which are detachably secured by bolts 21. The lugs are formed with oblique bases so that they may be secured in the ground-engaging position shown in Fig. 3 or, as shown in Fig. 4, so that they do not project radially beyond the rim periphery 18 for use on ordinary roads.
Patent GB-1519911-A (GB)
Title: Reaction products of sulphur dioxide with schiff's bases and their use as metal treatment agents
IPC: C07C309/24
Filed: 1976-02-21
Abstract: 1519911 Controlling plaster or cement setting times CIBA GEIGY AG 18 Feb 1977 [21 Feb 1976] 6935/76 Heading C 1H [Also in Divisions C2, C7 and C5] The setting times of plaster or cement are controlled by incorporating therein a compound or mixture of compounds of the formula wherein X is OH or NHR', Y is hydrogen or NH 3 R<SP>1</SP>, with the proviso that when X is OH Y cannot be hydrogen, R<SP>1</SP> is a saturated or unsaturated aliphatic or cycloaliphatic hydrocarbon radical containing from 1 to 20 carbon atoms optionally substituted by one or more halogen, cyano, nitro, hydroxyl, carboxyalkyl or sulphoxyalkyl radicals in which the alkyl group contains from 1 to 4 carbon atoms and R<SP>2</SP> is an aryl, alkaryl or aralkyl radical containing from 6 to 20 carbon atoms which may be optionally substituted by one or more cyano, nitro, halogen, hydroxyl, carboxyl, carboxyalkyl in which the alkyl group contains from I to 4 carbon atoms, hydroxymethyl or methoxymethyl radicals.
Patent GB-372870-A (GB)
Title: Improvements in and relating to systems for the electrical recording of sound
IPC: H04R11/08
Filed: 1931-03-05
Abstract: 372,870. Gramophones. GRAMOPHONE CO., Ltd., Hayes, Middlesex, ANGIER, N. D., 89A, Somerset Way, Iver, Buckinghamshire, PRATT, W. T., 10, Mount Road, Hayes, Middlesex, and GAUSS, H. E., 10, Gilkes Crescent, Dulwich, London. March 5, 1931, No. 6941. [Class 40 (ii).] In an electromagnetic recorder, the depth of cut is regulated and superficial irregularities in the blank are removed by a sapphire hemisphere 17 in advance of the cutter mounted on a pivoted bar 18 which has a projection 20 with a bevelled end co-operating with an adjusting screw 22 locked by a screw 25.
Patent GB-725708-A (GB)
Title: Improvements in or connected with raking machines
IPC: A01D78/00
Filed: 1953-03-13
Abstract: 725,708. Side-delivery rakes. VAN DER LELY N. V., C. March 13, 1953 [March 24, 1952], No. 6951/53. Class 6 (3). A side-delivery rake, of the type wherein a series of raking wheels 1 rotate in parallel planes oblique to the line of travel of the rake, is characterized in the provision of an arm 11 for pulling or pushing the rake frame 4a, 4b, the arm being swingable in a horizontal plane so as to occupy various positions with its free end 12 and its pivotal axis 35 on opposite sides of the plane of rotation of at least one of the rake-wheels. In Fig. 2 the rake is pushed by a tractor 8 through brackets 9, 13, connected respectively to a bracket 6 on the rear end of the frame and to the free end 12 of the arm 11. The arm 11 is cranked and connected at 35 to a bow 10 bridging the two parts 4a, 4b of the frame. For swath-turning the part 4b may be swung into the position 4e, the two frameparts being pivoted to the bow 10 and being supported individually by castors 5, 16. When the device is towed, the arm 11 may be swung into the position 14 and may carry a castor-wheel on its free end. The frame may be made in three sections pivoted on the arms of an E-shaped bow. Reference has been directed by the Comptroller to Specification 680,537.
Patent GB-1021306-A (GB)
Title: High strength rigid cylindrical member and method
IPC: F16F15/305
Filed: 1964-02-20
Abstract: A high strength cylindrical member e.g. a rotor for an ultracentrifuge is centrifugally cast from a material including elongated particulate matter of greater density than the remainder of the material so as to orientate said particulate matter with its long dimension lying substantially normal to the radii of the rotating mould.  The casting material, e.g. Al, Ti, thermosetting plastics, chemically settable materials such as epoxy set by a catalyst, together with elongate particulate matter such as chopped glass fibre, or iron filings, is fed into the centrifugal mould 10, Fig. 1 (not shown), in the gap between the mould wall and a rotatable mandrel 12, and the particles 27 aligned as shown in Fig. 4 (not shown) by applying a drag to the inner boundary of the melt by differential rotation of the mould and mandrel, the material then solidifying by cooling, heating or chemical reaction.  A slot 24 in the mandrel ensures a sufficient feed of metal to provide a full thickness to the casting wall.  Magnetic or electrostatic forces may assist the alignment of the particles. The elongated particles may simply be long molecules of the casting material.
Patent GB-1194513-A (GB)
Title: Improvements in and relating to Step Gearings
IPC: F16H27/04
Filed: 1968-02-13
Abstract: 1,194,513. Cam mechanism. CONTRAVES A.G. 13 Feb., 1968 [22 March, 1967], No. 7059/68. Heading F2K. Uniform rotation of an input shaft 2 is converted into a variably controlled stepped rotation of an output shaft 3 by mechanism comprising slides 4<SP>1</SP>, 4<SP>2</SP>, 4<SP>3</SP>, 4<SP>4</SP> which are reciprocated axially by the engagement of rollers 44 in a cam groove 24 in a portion 23 of the input shaft 2, the slides each carrying control pins 45, 46, 47, 48 which are adapted to selectively engage grooved portions 35, 36, 37, 38 of a hollow cylindrical portion 30 of the output shaft 3. As shown in Fig. 5, the grooves vary in shape, a groove 38 being engaged by a pin 48 for standstill, a groove 37 being engaged by a pin 47 for deceleration or acceleration to or from standstill, a groove 36 being engaged by a pin 46 for uniform motion, and a groove 35 being engaged by a pin 45 for acceleration or deceleration from or to standstill. The control pins are advanced or retracted by electromagnetic means acting through cam mechanism.
Patent GB-1269206-A (GB)
Title: Improvements in or relating to a plug or stopper for open ends of tubular metal appliances
Inventor: DUNCAN LESLIE COLIN VERNON
IPC: A47B91/12
Filed: 1968-06-21
Abstract: 1,269,206. Ferrules. SOUTHBOURNE RUBBER CO. Ltd. June 17, 1969 [June 21, 1968; Dec.2, 1968; Feb.10, 1969], Nos.29775/68, 56995/68 and 7117/69. Heading A4U. A foot or glider for a tubular metal furniture leg comprises a rubber or plastics plug 1 having a head 2 and an integral tapered shank 3 provided with axially directed superficial grooves 5, the shank being embraced by an axially split metal or plastics ferrule 6. The ferrule has a flange 8, abutting a shoulder 4 and supporting the end of the leg, and contracts, when the foot is driven into the leg to frictionally grip the plug, the material of which is uncompressible so that the ribs spread into an adjacent groove to improve the frictional grip. In a modification for tubular metal furniture legs of polygonal, e.g. square, cross-section, the head is dimensioned to cover the open leg end and a radial projection from the shank passes through the axial slit in the ferrule to locate in a corner of the leg. The free edge of the radial projection may be normal to the shoulder 4. In further modifications, the locating radial rib is provided on the ferrule, or the ferrule has no flange, one end thereof abutting a metal washer inset in the shoulder and the other end of the ferrule being notched.
Patent GB-211018-A (GB)
Title: Improvements in or relating to educational devices for the selection of tabulated information
IPC: G09B1/22
Filed: 1923-03-12
Abstract: 211,018. Porter, C. March 12, 1923. Question-and-answer appliances. - Relates to educational appliances for the selection of tabulated information, such as the inflectional terminations of languages, and of the kind comprising a fixed base member bearing radial columns of matter with corresponding peripheral headings, an upper rotatable disc provided with reading apertures, and an intermediate rotatable index member. The intermediate member b, Fig. 2, is shaped to cover part only of the matter on the base member d, Fig. 1, and bears additional matter which can be substituted for part of the matter on the member d. For example, the member d bears the terminations of the nouns and of the indicative mood of the verbs in Latin, and the member b bears the terminations of the subjective mood, the index g on the member b being set to either of two marks h, m to disclose the terminations of either mood. More than one intermediate member may be provided, for example in a second member bearing terminations for the optative mood in Greek. The upper disc a is provided with additional reading apertures n, o and a reference table q for use with two series of reference numbers, p, p<1> on the member b and the headings e on the base member, to determine additional information, such as the sequence of tenses for principal and subordinate verbs.
Patent GB-539046-A (GB)
Title: Improvements in or relating to covers for soaking pits and the like
IPC: C21D9/70
Filed: 1940-04-20
Abstract: 539,046. Soaking-pit and like covers. ATKINSON, J. S., and STEIN & ATKINSON, Ltd. April 20, 1940, No. 7171. [Class 51 (ii)] [Also in Group XXV] A soaking pit cover is moved to and from its position over the pit by a travelling carriage from which it is suspended by lever arms which serve to raise and lower the cover when in position, means being provided whereby the cover is caused to move in a vertical path during its raising and lowering movement. As shown in Fig. 1, the cover 2 is provided with a frame 5 having brackets 7 by which it is suspended from levers 8, 9 pivotally mounted on the axles 10 of the wheels 12 of the travelling carriage frame 11 to which the arms 9 of the levers are adjustably connected. The levers at the left hand side of the carriage are integrally connected with arms 20 carrying rollers 21 which during the raising and lowering movement of the cover move in grooves 23. When it is desired to remove the cover a motor is started to actuate through rack and pinion gearing the rod 14 secured to the carriage frame 11. The levers 8, 9 are turned about the shafts 10 and the cover rises, its movement in a vertical path being ensured by the arms 20 which cause the carriage to move horizontally to compensate for the horizontal component of the movement of the ends of the levers attached to the cover. When the rollers 21 leave the grooves 23 they run on the tracks of the wheels .12 of the carriage Fig. 10 shows a modificatiion in which over running of the carriage is prevented by a stop 40 and the carriage actuating rod 14 is connected to the cross head 13 of the carriage in which springs 39 are embodied to take the forward thrust of the rod 14. The weight of the cover is counter-balanced by a weight 44 connected to a pivoted lever 46 one end of which engages with a cam 49 on the operating rod 14. When the cover is adapted to traverse an inclined track it may be provided,with main and auxiliary counter-weights, the main counterweight coming into operation during the raising and lowering of the cover. Fig. 6 shows a modification in which the cover 2 is suspended by a bracket 7 from shafts such as 31 with which engage also the lever arms 8 pivoted on the axles 10 of the carriage wheels 12, the arms 8 also carrying arms 20 provided with rollers 21 engaging with grooves 23. A motor 30 mounted on the cover drives the shaft 31, when it is desired to lift the cover, through gearing. The shaft 31 drives through gear wheels 32 at each end idle pinions 33 mounted on stub shafts on the arms 8 and geared to wheels 34 keyed to the axles 10. The gears 32, 33 travel round the gear 34 in a planetary movement while at the same time the arms 20 cause a compensating movement to be given to the carriage. In a further modification the lever arms 8 may take the form of eccentric sheaves engaging with straps in the brackets 7.