baber/WOPTO huggingface dataset:
Patent GB-1380783-A (GB)
Title: Apparatus for forming longitudinal weld seams on moving webs  of plastics film
IPC: B29C65/20
Filed: 1972-06-06
Abstract: 1380783 Seaming non-metallic sheet material WINDMOLLER & HOLSCHER 6 June 1972 [16 June 1971] 26372/72 Heading B5K Apparatus for longitudinally welding moving webs or web layers 11 of plastics film comprises a curved supporting plate 1 for the layers 11 to be welded, an electric heating strip 5 disposed on the plate 1 along a welding path for the layers 11 and web guiding rollers 12, 13 upstream and downstream of the plate 1 to cause the layers to follow the curvature of the plate 1 along the welding path. In one embodiment, Figs. 1 and 2, the plate 1 comprises a metal sheet 2 covered by a heat insulating layer 3 and a polytetrafluoroethylenecoated glass fibre fabric 4. The strip 5 is stretched over the fabric 4 and its ends pass through holes 6, 7 to terminals 8, 9. A polytetrafluoroethylenecoated glass fibre fabric 10 covers the strip 5. The rollers 12, 13 are positioned so that the layers 11 to be welded longitudinally, e.g. to form a flattened tube, do not touch the edges 14, 15 of the plate 2 to prevent rubbing. The strip 5 is guided along brass rails (16), (17), Figs. 3 and 4 (both not shown), to the terminals (8), (9). A compression spring (18) acts on the terminal (9) to maintain the strip 5 under tension when heated. A thermocouple 22, Fig. 1, is soldered to the strip 5 and is located in a hole 21 in the plate 1. The apparatus is adjustable transversely to the layers 11 along cross-beams 23, 24. In a modification, to subdivide a seamless flattened tube 44, Fig. 9, into narrower tubes 50, 51, 52, the tube 44 is formed with seams 45, 46 by heating strips adjustably mounted on a curved plate and then severed through the middle of the seams 45, 46 by blades 47, Fig. 1. In this case, the heating strips are passed around the leading and trailing edges of the curved plate, see Fig. 6. In a further modification, the heating strips are of circular crosssection to simultaneously sever and weld the flattened tube into narrower tubes, Fig. 10 (not shown). In another embodiment, Fig. 7, for simultaneously forming two longitudinal welds, rollers 63, 64 guide layers 62 over a single sheet 55 bent at 56 to form two curved plates having a common heating strip 57 led to sprung terminals 59 through holes 58. The part of the strip 57 passing around the bond 56 and the ends passing through the holes 58 are copper-plated. The apparatus is laterally adjustable on beams 60.
Patent GB-655409-A (GB)
Title: Improvements in and relating to magnetrons
IPC: H01J25/58
Filed: 1947-10-02
Abstract: 655,409. Magnetrons. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 2, 1947, No. 26595. Convention date, Oct. 2, 1946. [Class 39 (i)] In a magnetron the anode members are made up of U-shaped pieces of hollow copper tubing 11, Fig. 1, attached to the inner surface of the cylindrical copper envelope 1, and the passages in the anode members are connected with passages 12, 16; 13, 13<SP>1</SP> formed between members 1, 14 so that the whole anode system can be water cooled. Alternate and intermediate anode members are connected together by ring straps 17, 18. The output is taken by strap 43 to a central terminal 38 and thence along a coaxial line attached to 38, 42. Cupshaped terminal 38 is sealed into dome-shaped insulator 39 which is sealed at its lower end to sheet metal member 40. Member 40 terminates in flange 41 which is bonded to ring 42 sealed to member 1. The magnetic circuit is formed by coil 37, yoke 37<SP>1</SP>, and polepieces 20, 36 of frusto-conical shape. The cathode 19 is directly heated; one end thereof is connected to stud 30 and thence to cup-shaped terminal 28, and the other terminal thereto is connected through end shield 33, post 32, end shield 34, and lead 35 to cylinder 31 and thence to terminal 27. Members 25, 26, 27, 29, 28 are alternately metal and insulating material and member 25 is secured to washer 21 supporting polepiece 20 by a flange at 23. An exhaust tube 46 is provided.
Patent GB-1473458-A (GB)
Title: Solid state watch electrical switch
IPC: G04G99/00
Filed: 1975-06-23
Abstract: 1473458 Electronic timepieces TIMEX CORP 23 June 1975 [22 July 1974] 26635/75 Heading G3T [Also in Division H1]  A switch for a solid state digital watch comprises a rotatable shaft 10 having an eccentric tab 11 at one end for selectively engaging switch blades 18, 19, 21 and a spring member 34 engaging an intermediate rectangular section 13 of the shaft 10 to provide a detent and having a vase portion 36 biased against the watch case 17 to provide electrical contact therewith. The other end of the shaft 10 projects outwardly of the watch case 17 and is fixed to'a watch crown (16), Fig. 3, (not shown) which facilitates turning of the shaft 10 from an  inoperative position to a position wherein the tab  11 engages any one of three beryllium-copper  switch blades 18, 19, 21 fixed at one end to a  printed circuit board 22. The blade 18 is coupled to logic circuits to provide a capability of selectively advancing the minutes or hours counters at 1Hz and/or to reset the seconds counters to zero. The switch blade 21 comprises the mode switch' blade and switch blade 19 is engaged by the tab 11 when the watch is to be shut down.
Patent GB-741257-A (GB)
Title: Improvements in sealing stoppers embodying devices for gauging the level of the liquid in electric accumulators
IPC: H01M50/627
Filed: 1953-09-29
Abstract: 741,257. Batteries. BOSCH GES., R. Sept. 29, 1953 [Sept. 30, 1952], No. 26667/53. Class 53. [Also in Group XVIII] An accumulator is provided with a stopper having a depending transparent tube 8 which indicates the height of the electrolyte when the stopper is removed, a device being provided to prevent the electrolyte in the tube from flowing back into the accumulator. In the construction shown in Fig. 1 the tube 8 forms an extension of a chamber 6 in the stopper which is provided with an opening 11 leading into a groove 12 which opens into the space 16 above the electrolyte in the accumulator. Openings are formed in the conical base of the stopper so that the space 16 communicates with the exterior of the accumulator through an opening 14. The stopper is surrounded by a rubber ring 10. When the stopper is in position as shown in Fig. 1 the electrolyte rises in the tube 8 and when the stopper is removed the ring 10 expands and closes the opening 11 so that the liquid in the tube 8 is retained and prevented from returning to the accumulator. The tube 8 may be provided with markings to indicate the height of the electrolyte. Fig. 4 shows a modification in which the stopper 31 screws into the accumulator cover 42 and carries a rod 35 terminating in a disc 38. The tube 32 is normally open at its lower end and is held in position by a compressed rubber ring 40. When the stopper is removed the ring 40 keeps the tube 32 stationary until the lower end is closed by the disc 38.
Patent GB-730726-A (GB)
Title: Improvements relating to travelling wave tubes
IPC: H01J23/24
Filed: 1952-10-24
Abstract: 730,726. Travelling-wave tubes. LELAND STANFORD JUNIOR UNIVERSITY, BOARD OF TRUSTEES OF. Oct. 24, 1952 [Oct. 26, 1951], No. 26744/52. Class 39 (1). [Also in Group XL (b)] A travelling-wave tube in which the slowwave structure includes a number of equally spaced projections arranged to provide alternate regions of strong and weak electric field along the path of the electron beam, is operated near low-frequency cut-off on the first space harmonic of the wave. The rectangular waveguide 23, Fig. 4, has inwardly extending transverse members 27. Opposed sets of members may be offset axially. The guide shown in Fig. 7 has series of slots 63 in opposite sides. The electron beam velocity is adjusted equal to the free-space wave velocity decreased in the ratio of the spacing d between consecutive projections to double the width of the guide. The ratio may be of the order of one-tenth. The guide is energized by a wave with a free-space wavelength double the width of the guide. The depths of the slots between the projections is not critical, but may be about one half the distance between the projections or less. The guide 27, Fig. 4, is coupled to the external circuits by rods 33, 33<SP>1</SP> located to one side of the axis of the guide. In a modification, Fig. 6, coupling is by wave-guide transformer sections 51, 57. The guide 27, Fig. 4, is supported within the envelope 29 by spring clips 31.
Patent GB-226913-A (GB)
Title: Improvements relating to brisant explosives
IPC: C06B25/08
Filed: 1923-10-26
Abstract: 226,913. Fl³rscheim, B. J. Oct. 26, 1923. Explosives.-A ground mixture of tetranitroaniline and a suitable nitrocompound or mixture of nitrocompounds, for example trinitrotoluene, is heated sufficiently to melt the trinitrotolueneonly, which permeates the tetranitroaniline and renders it waterproof. The trinitrotoluene may be used to the extent of 5-10 per cent. Other nitrocompounds, or inorganic nitrates may be added to the mixture.
Patent GB-645590-A (GB)
Title: Improvements relating to purifier machines
IPC: B02B1/02
Filed: 1948-10-15
Abstract: 645,590. Sifting - apparatus. SIMON (HOLDINGS), Ltd., H., (formerly SIMON Ltd., H.), LOCKWOOD, J. F., and BALL, J. S. Oct 15, 1948, No. 26859. [Class 117] In purifier machines, such as are used in flour-milling machines for extracting the light bran particles from the semolina and middlings by means of an air current, transversely-dÝsposed bran-collecting trays disposed above the sieve are suspended independently of the sieve and are vibrated in a plane normal to the sieve and at right. angles to its length, the vibrations being horizontal or vertical, or both. The machine shown comprises two sieves a arranged under hoods b, sets of trays c mounted over the sieves and connected by channels e being carried on fixed crossbars d. The end trays of each set are attached to the bars d by leaf-springs f on which the trays are reciprocated by arms k connecting the inner channels e to eccentric sheaves m on a driven cross-shaft n. The material collected in the trays is discharged into troughs r, s.
Patent GB-1469756-A (GB)
Title: Manufacture of disposable containers or cups
IPC: B65D1/26
Filed: 1973-06-05
Abstract: 1469756 Cups DANIELS STROUD Ltd 29 May 1974 [5 June 1973] 26885/73 Heading A4A [Also in Divisions B5 and B8]  A cup is manufactured from a sheet 11, e.g. of plastics material by thermoforming a blow-moulding with an integral side wall 12 and base 13, and the base is raised relative to the side wall in such a way that the material of the side wall is folded over and welded together by friction throughout substantially the whole folded area due to relative axial movement and the application of radial compressive force, and a bead 16 is formed at the junction of the side wall and bottom. In the Figure, the sheet is clamped by a two part ring 1. A push 10 is lowered to pre-stretch the sheet and seal the mould cavity. Compressed air and vacuum are applied to each side of the sheet, and a piston 8 is raised to fold the side wall. The piston has a tapering recess to apply a radial compressive force to the folded portion.
Patent GB-163275-A (GB)
Title: Improvements in and relating to swinging conveyors
IPC: B65G27/00
Filed: 1920-09-21
Abstract: 163,275. Centner, G. May 10, 1920, [Convention date]. Jigging-conveyers. -In a jigging-conveyer for coal suspended by vertical chains b wherein the swinging radius is altered by the cooperation of the chain with fixed stops, stop pins g are provided for each chain, of such length that the central space of the conveyer is left free for the passage of the material. The position of the pins on the supports c, d can be varied.
Patent GB-713060-A (GB)
Title: Methods and apparatus for high frequency induction heating
IPC: B23K13/02
Filed: 1952-03-10
Abstract: 713,060. Welding by pressure. OHIO CRANKSHAFT CO. March 10, 1952 [March 10, 1951], No. 26993/53. Divided out of 713,041. Class 83 (4). [Also in Group XI] A seam welding plant for forming continuous strip into tubular form and for heating its opposed longitudinal edges to welding temperature and pressing the heated edges together to form a pipe, includes metal forming rollers 15 on a base 13, and the edges of the metal skelp A are heated by an inductor C. The inductor comprises a main conductor 20 surrounded on three sides by laminated material of high permeability, and return conductors 21, 22. In order to reduce the stray return current flowing through the rollers, and base a byepass conductor 70 is provided which has brushes forced against the skelp by springs 74 insulated from the base 13. A lug 80 on the base engages lugs 81 on the conductor to prevent longitudinal movement thereof. In order to reduce voltage differences between the workpiece and inductor, the centre point of the transformer secondary 83 feeding the inductor is connected to the conductor 70 and to the base. The conductor 70 may be water cooled and several such conductors may be spaced around the skelp. Alternatively, one conductor may surround the greater portion of the skelp. Specifications 704,389 and 713,041 are referred to.
Patent GB-519128-A (GB)
Title: Improved manufacture of coated welding rods of aluminium or aluminium alloys
IPC: B23K35/36
Filed: 1938-09-15
Abstract: 519,128. Welding-fluxes : alloys. VEREINIGTE ALUMINIUM-WERKE AKT.-GES. Sept. 15, 1938, No. 27011. Convention date, Oct. 30, 1937. [Classes 82 (i) and 82 (ii)] [Also in Group XXII] Welding rods of aluminium or aluminium alloys are given a coating of flux consisting entirely of salts by making a pasty mixture of at least two different salts with at least four different ions, at least some of the anions being combined with the cations for which they have the lower affinity. The reaction which occurs between the salts results in a tough and firmlyadherent coating. A coating for use in welding aluminium-magnesium alloys consists of sodium fluoride, sodium chloride, and lithium chloride, reaction occurring between the sodium fluoride and lithium chloride. For other alloys, such as those containing manganese, small amounts of chromium fluoride and of potassium sulphate, fluoride, chloride and the like may be added. The coating may consist of several layers of different composition, in which case the weight ratio of fluorine to chlorine in the layer next to the rod is preferably greater than, or equal to, two to one, the corresponding ratio in succeeding layers being less than, or equal to, two to one. An example is given of compositions for the mixtures for a three-layer coating for an aluminium alloy rod containing approximately 2.0 per cent. of magnesium and 1.0 per cent. of manganese.
Patent GB-1008480-A (GB)
Title: Improvements relating to heating installations
Inventor: BAVERSTOCK PETER
IPC: F16L3/22
Filed: 1963-07-09
Abstract: 1,008,480. Space-heating systems and apparatus. BRIGHTSIDE HEATING & ENGINEERING CO. Ltd. March 23, 1964 [July 9, 1963], No. 27033/63. Headings F4S and F4U. A space heating system comprises a closed loop of conduit including a pair of parallel duct portions 10 connected by cross leaders 11 and 12 located over the space to be heated and connected to a heater 13 preferably a gas-oil furnace, a fan for circulating air through the loop for heating the space mainly by radiation, the duct spacing relative to the duct height above ground level and the cross-sectional shape of the radiant emissive surfaces being such that substantially the whole space at ground level is heated by the ducts. In Fig. 3 each duct portion 10 comprises three parallel tubes which are hung by U-shaped hangers 14 carried on crossbars 15 with split pins 16 to retain the assembly in position. At each lateral side of the bank of tubes is a sheet-metal convection suppressor 17 spaced from the duct. The parts of the tubes not required for radiating are covered with heat insulation 18. The cross-sectional areas of the heater ducts 11 and 12 are larger than the combined cross-sectional areas of each bank of the ducts 10. The cross-sectional shape of the ducts need not be circular, but may be elliptical, rectangular, triangular or square.
Patent GB-720647-A (GB)
Title: Improvements relating to domestic firegrates
IPC: F24B1/195
Filed: 1952-10-28
Abstract: 720,647. Firebacks. BAXENDALE, J., and BAXENDALE, R. Sept. 25, 1953 [Oct. 28, 1952]. No. 27041/52. Class 126. In a domestic firegrate comprising two side cheeks and two back bricks fixed one above the other, the upper back brick resting on the top of the lower back brick and on inclined edges of the side cheeks the rear edges of the side chcks key into vertical grooves or corrugations in the bottom back brick. The firegrate shown (Fig. 2) comprises side cheeks a, b, and back bricks c, d, the upper brick d resting on the lower one c and on the inclined edges of a and b. The brick c has a corrugated front surface and the rear ends of the cheeks a, b are shaped to fit in the corrugations (Fig. 4). In a modification (Fig. 6) the corrugations resemble serrations of opposite hand at opposite sides of the centre of the lower back brick c. The engaging ends of a, b, are shaped accordingly.
Patent GB-482892-A (GB)
Title: An improved dish washing machine
IPC: A47L15/10
Filed: 1936-10-06
Abstract: 482,892. Dish - - washing machines. ALLEN, C. Oct. 6, 1936, No. 27118. [Class 138 (i)] A dish-washing machine comprises a tank 12 adapted to contain dishes immersed in water and located above an air-diffusing tube 22 which is provided with a longitudinal slot 28 between two plates 29, 30 preferably integral with the tube, and spaced from two further plates 33, 34, the arrangement being such that when air is forced through the tube, water is drawn through the spaces 35 and projected on to the dishes. The air which is passed through the tube by a fan 17, is preferably heated by passage through a heater 19. A condensing chamber 13 is located at the side of the tank 12 and a pipe 23 is adapted to byepass cold air from the fan 17 to an outlet 24 leading to the outer surface of the chamber 13. The chamber and the tank have outlets connected to a waste pipe 16. The dishes are supported on frames 37 which are resiliently engaged in corrugated side frames 36. After the dishes have been cleaned the water may be removed and hot air used to dry the dishes.
Patent GB-447746-A (GB)
Title: Improvements in or relating to apparatus for shaping the opening of shoe uppers
IPC: A43D8/00
Filed: 1934-09-22
Abstract: 447,746. Boot - making machines. DODGE, M. L., 211, High Street, Newburyport, Massachusetts, U.S.A. Sept. 22, 1934, No. 27298. Convention date, Sept. 25, 1933. [Class 17 (i)] Treeing and ironing.-An apparatus for finishing a shoe around the foot-opening comprises a heated form engaging the lining and a co-operating presser to engage the outside of the upper at its edge with a component of pressure directed towards the edge to form an inward curve and cause the top margin of the upper to project over the top margin of the lining. The apparatus may be used on the upper before assembly. Three forms are described, one for treating the heel end, one for the side portions and one for the front of the instep, the latter slightly lifting the forward edge. A table 1 carries a number of brackets 14 each carrying an appropriate form 15 heated by an electric resistance. Co-operating with the form are a pair of presser members 30 of complementary shape to the form, covered by a layer of rubber 51 and a light leather facing 52 carried on levers pivoted at 32 and actuated by toggle links 35 operated by a handle 46. The joints at the outer ends of the toggle links are adjustable, the links being slotted and provided with a screw 82 to abut against the end of the lever. A gauge 90 for the edge of the upper is carried by the form. The form 112 for the front of the instep is concave to give a " lift " to the edge of the upper. It co-operates with a presser 120, having a yielding facing, on a lever so pivoted that the presser has a component of motion towards the top of the shoe. Supporting shims or wedges 115 may be arranged between the form and the shoe bottom. The heel end form 131 co-operates with a presser member 137 pivoted to a lug 135 on an operating handle 133, the presser being urged toward the form by a spring 138 to a limit determined by an adjustable stop member 141.
Patent GB-807525-A (GB)
Title: Improvements in or relating to sidecar chassis
Inventor: JACOBS JOSEPH
IPC: B62K27/02
Filed: 1955-09-26
Abstract: 807,525. Sidecar chassis frames. CANTERBBURY SIDECARS Ltd. Dec. 13, 1956 [Sept 26, 1955], No. 27338/55. Class 108(2) A motorcycle side-oar chassis frame comprises a pair of body bearers 22, 25, a tube 1 transversely disposed to the frame, associated with a bearing 2 for the road wheel 3 at one end, and adapted for attachment to the motorcycle frame (not shown) at the other, and a tube having in intermediate fore-and-aft section 8 reversely cranked at its opposite ends 6, 7, which are connected respectively to the transverse tube 1 adjacent the road wheel 3 and to the cycle frame, the tubes being connected by screw clamps The bearer 22 is supported by coil springs 23 from the tube 1, and the bearer 25 is supported by rubber washers 27, 27, from a cross bar 26 clamped to the tube 8. The connections of the tube 1 to the motorcycle frame is effected by means of a right angle tube 30 telescopically mounted in the tube 1. A further connection is provided by a tube 16 jointed to the tube 1, in which is telescopioally mounted a coupling rod 17
Patent GB-1118477-A (GB)
Title: Flux transfer lifting apparatus
IPC: H01F7/02
Filed: 1967-06-14
Abstract: 1,118,477. Control systems for lifting magnets. WESTINGHOUSE ELECTRIC CORP. 14 June, 1967 [19 July, 1966], No. 27371/67. Heading H2H. Magnetic lifting apparatus comprises a permanent magnet having a polepiece 52, the load 57 to be lifted being situated at one end 47 thereof and a keeper plate 45 placed at the end 53, and a control winding 50 diposed about the polepiece 52, the arrangement being such that closure of a lift switch 56 energizes the coil 50, by way of a magnetic memory device 80, in a direction 74 so as to produce a flux B L  which passes mainly through the load 57 to lift the load, whereas closure of a release switch 58 energizes the coil 50 in a direction 76 which is opposite to direction 74 to produce a flux B K  passing mainly through the keeper plate 45 so as to release the load 57, the magnitude of the flux B K  being less than that of the flux B L  by reason of the variable series resistance 62. The lift and release switches may be incorporated in a unit which can be attachable to or detachable from the lifting apparatus and the apparatus may comprise a plurality of permanent magnets individually or collectively controlled.
Patent GB-761113-A (GB)
Title: 5-t-butyl-m-xylylene diisocyanate
IPC: C07C263/10
Filed: 1954-09-22
Abstract: The invention comprises 5-tert. butyl-m-xylylene di-isocyanate (see Group IV (b)) which may be used in the preparation of synthetic polyester rubbers characterized by improved bulk and elasticity.ALSO:The invention comprises 5-tert. butyl-m-xylylene di-isocyanate which may be prepared by the action of phosgene on 5-tert. butyl-m-xylene diamine dihydrochloride.  It is used in the preparation of synthetic polyester rubbers (see Group IV (a)).  In the example, 5-tert. butyl-m-xylylene diamine is reacted with hydrochloric acid, the dihydrochloride separated, mixed with o-dichlorobenzene and heated while passing phosgene, the product being separated by vacuum distillation.  5-tert. butyl-m-xylylene diamine is prepared by the reduction of 5-tert. butyl-isophthalonitrile.