baber/WOPTO huggingface dataset:
Patent GB-979970-A (GB)
Title: Method of interconnecting sheet metal parts
Inventor: ROBERTS FREDERICK SLEIGH
IPC: F16L41/08
Filed: 1962-09-04
Abstract: 979,970. Welding by fusion; assembling guttering. JOSEPH LUCAS (INDUSTRIES) Ltd. Nov. 6, 1963 [Sept. 4, 1962], No. 33812/62. Headings B3A and B3R. [Also in Division E1]  A method of connecting sheet metal parts comprises shaping an end of a tubular part to conform to an arcuate surface of a further part, forming in the latter part an opening equivalent to the cross-sectional shape of the tubular part so as to provide a pair of integral flaps which are bent so as to lie within, and are in contact with, the interior of the tubular part and securing the parts together. A rectangular opening 11 is produced in a semi-circular section of metal guttering 10 by cutting along the parallel lines 13 and along a transverse line connecting the centres of the lines and the flaps 12 produced thereby bent downwardly to enter the arcuately shaped end of a square cross-sectional sheetmetal tube 14. The transverse tube width is greater than the opening between the flaps by an amount equal to twice the thickness of the flaps. The remaining sides of the opening 11 are in vertical alignment with the inner surfaces of the adjacent walls of the tube. The parts are fillet welded together.
Patent GB-1265214-A (GB)
IPC: G05D/
Filed: 1969-07-04
Abstract: 1,265,214. Temperature responsive actuating elements. ETABS SOURDILLON MATRICAGE ET ROBINETTERIE DE PRECISION. July 4, 1969 [July 18, 1968], No.33909/69. Heading G1D. A thermostatic control device for domestic vessel-heating appliances such as cookers comprises a temperature sensing element 8 carried by a support 9 on an arm 10 pivotally mounted on a spindle 11, the element 8 being located above the centre of a burner 2 of the appliance and being urged into contact with the base of a vessel 5 when placed to rest on bars 6 above the burner, by means of a spring 12 acting on the arm 10. The element 8 may be in the form of a diaphragm or capsule and is connected by a capillary tube 16 to the termostat proper (not shown). Lugs may extend laterally from the support 9 to engage the underside of the bars 6 leaving the element 8 projecting slightly above the bars when the vessel 5 is not in place. When the bars 6 are removed for cleaning, the spring 12 will -cause the element 8 to swing upwards well clear of the burner 2. In place of these lugs, a manually operable catch may be provided acting on a plate connected to the arm 10, and in a further alternative embodiment the element 8 and support 9 may be mounted for pivotal movement about a vertical axis, as well as a horizontal axis to allow the element 8 to be moved laterally clear of the burner 2 when thermostatic control is not required.
Patent GB-523055-A (GB)
Title: Improvements in or relating to dynamo electric generators
IPC: H02K23/46
Filed: 1938-11-24
Abstract: 523,055. Dynamos. GENERAL ELECTRIC CO., Ltd., and DAVIES, E. C. Nov. 24, 1938, No. 34189. [Class 35] In a direct current generator having a leakage path arranged to divert a part of the main field flow from the armature to a degree decreasing as the current increases the leakage path is approximately saturated at no load, which is stated to prevent excessive demagnetization if an alteration of the load produces a reverse current in the generator. For this purpose poles 2 carrying shunt windings 5 are connected by a magnetic bridge 3 carrying a winding 4 in series with the generator armature, the bridge 3 being of such size as to be saturated by the leakage flux from the poles 2 at no load. To cause the pole-yoke circuit to be saturated at full load openings may be made in the poles. Some of the poles may be provided with inserts of material of high magnetic retentivity in contact with the metal of the yoke, but separated from the pole by non-magnetic packing.
Patent GB-603278-A (GB)
Title: Improved electric valve circuit for controlling the supply of direct current obtained from an alternating current source
IPC: H02M7/15
Filed: 1945-12-18
Abstract: 603,278. Converting ; control systems for consumption apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., and FORSTER, E. W. Dec. 18, 1945, No. 34219. [Classes 38 (ii) and 38 (iv)] [Also in Groups XXXVII and XXXVIII] A pair of grid-controlled valves 1, 2 connected reversely between an A.C. source, such as a transformer 3, conduct equal and opposite currents through a load 4 on alternate cycles when a control potential, e.g. applied to the grid of valve 1 has a mean value, but the current passed through one valve exceeds that through the other on a change in the value of, e.g. the sense of the resultant current depending on the sense of the change. Each time valve 1 passes current, a rectified pulse is applied by the transformer 6-7, through rectifier 8, to the time-delay circuit made up of resistance 9 and condenser 10 in parallel with each other in the lead to the grid of valve 2. The condenser 10 is charged so that this grid is made negative. The time constant of the delay circuit is longer than one A.C. cycle and the grid potential of valve 2 thus depends upon the current through valve 1. The average current per period through the load is of course dependent on the difference between the currents through the two valves. The arrangement shown is applicable to continuous control valves. When used with valves of the discontinuous control type the grid circuit of valve 2 would include a fixed A.C. bias lagging on the anode voltage and, if the control voltage were D.C., the grid of valve 1 would be similarly biassed. The load 4 may be, for example, an alternator field winding or a motor armature.
Patent GB-978927-A (GB)
Title: Improvements in and relating to the manufacture of semiconductor devices
IPC: C25F3/12
Filed: 1961-09-25
Abstract: N-type semi-conductor materials, e.g. silicon and germanium, are electrolytically etched, applying a potential to maintain the electrolyte alternately positive and negative with respect to the wafer body, the duration of the negative cycle being equal to or less than the lifetime of minority carriers injected in the wafer during positive cycle..  For a life cycle of 50m  secs. a potential of several hundred volts at 400 kc./sec. is applied, each etching interval being 1.25m  secs.  The electrolytes used include dilute HF, KOH, or HNO3 but an electrolyte containing fluoride ions is preferred, and examples are given with a lifetime of injected carriers up to 600m  secs. for which an alternating frequency of 5 kc./sec. is used.  Normal sine wave A.C. may be used, or rectangular pulses with or without a D.C. component superimposed. A mask may be applied to the wafer and then submerged in an agitated electrolyte. Pits may be etched on both sides of the wafer, and emitter and collector elements jet plated on the bottoms of the opposed pits forming a transistor base. Specification 826,063 is referred to.
Patent GB-1187321-A (GB)
Title: Improvements in or relating to Cardboard Containers for Dispensing Rolled Sheet or Filamentary Material
Inventor: FISHER HEDLEY
IPC: B65D85/04
Filed: 1967-03-02
Abstract: 1,187,321. Roll holders. HUGH STEVENSON & SONS Ltd. 21 Feb., 1968 [2 March, 1967; 26 July, 1967], Nos. 9907/67 and 34359/67. Heading G. A holder for dispensing a roll of sheet or filamentary material is formed from a cardboard blank scored and cut so as to be foldable into a polygonal tube 1, each of the faces having end flaps 5 with locking tabs 6, with two polygonal end bearing blanks 10 having side flaps and slots 16 at the base of the side flaps inserted into the tube ends so that the side flaps bend outwards and the tube end flaps 5 fold inwards over the side flaps to lock tabs 6 in slots 16, and the roll core 14 being carried in bearing holes 19 in the end blanks. The holder has a dispensing slot 18 and carrying handle 17 inserted in slots 9. The holder is loaded by inserting material through slot 18, fixing it to the core and then rotating the core in a winding machine. Hole 19 may be replaced by a disc entering inside the core end and the slot opened by tearing.
Patent GB-1089961-A (GB)
Title: An automatic timer
IPC: G04F3/02
Filed: 1963-08-30
Abstract: 1,089,961. Valves; stopping shafts in predetermined positions. ELECTRICAL REMOTE CONTROL CO. Ltd., and J. CHUCHLA. Aug. 28. 1964 [Aug. 30, 1963], No. 34378/63. Headings F2L and F2V.  An automatic timer comprises a miniature pneumatic motor 1, and a cam-shaft 14 driven thereby to operate miniature pneumatic snap-acting control valves 21. The rotary propeller of the motor 1 continuously drives a gear 8 through a gear train 5 and upon supplying air to a cylinder 30 the piston 29 therein tensions springs 26, 28 and a lever 25 engages a resiliently faced clutch 10, 11 to connect the gear 8 to the cam-shaft 14 as well as to operate a three-armed lever 31 which tilts a plate 35 to lower cam follower 19 on to adjustable cams 15 thereby operating valves 21 in a given sequence. Each cam carries a calibrated scale. When the air supply to the cylinder 30 is cut-off the piston 29, clutch 10, 11, and other parts return to the inoperative position. Another cam 39 on the shaft 14 coacts with a spring-loaded arm 40 pivoted in a drum 43 and if the arm 40 does not lie in the cam cusp then shaft 14 is returned to an angular preset location determined by the angular position of the arm 40 around the shaft; manual or pneumatic motor rotation of the drum varies this angular position. A pointer 45 on the shaft 14 moves over a scale 46 on the drum.  The clutch and resetting arrangement may be omitted in which case the shaft 14 is driven directly from the motor 1.
Patent GB-1237470-A (GB)
Title: Spacers for coaxial tube assemblies
Inventor: SCHEFFLER ERNST
IPC: H01B12/16
Filed: 1969-07-09
Abstract: 1,237,470. Heat insulated coaxial tubes. KABEL - UND METALLWERKE GUTEHOFFNUNGSHUTTE A.G. 9 July, 1969 [8 Aug., 1968], No. 34540/69. Heading F2P. [Also in Division H1] Heat transfer between coaxial tubes 2 and 3 is minimized by spacer 4 comprising a spiral occupying the space between adjacent tubes at least at discrete positions along the length of the assembly. It consists of many superposed strips of thermally insulating material, e.g. polyamide, fastened together only at intervals, to further reduce heat transfer. The strips, which may be twisted, fluted and perforated, may be joined by pins, adhesive or welding, and interspersed with metal foil strips to reduce radiative transfer. The invention may be used to insulate a superconducting cable, by placing it and liquid helium in 1 evacuating tube 2, and placing liquid nitrogen in tube 3.
Patent GB-756136-A (GB)
Title: Improvements in curved rolls transversely stretching web materials
Inventor: DEAN WALTER EDWARD
IPC: D06C3/06
Filed: 1954-11-29
Abstract: 756,136. Stretching webs transversely. ROBERTSON, J. D. Nov. 29, 1954, No. 34547/54. Class 100 (1). [Also in Group VIII] A roller for stretching webs transversely comprises a rigid axle having a plurality of straight cross-sectionally round bearing portions spaced along the, axle and a slight bend between some of these portions, such that the axle is curved, a plurality of bearing members rotatable on and distributed along the axle, such that they bear on the axle only at the straight portions thereof, and a flexible surface sleeve engaged over the bearing members securing them together to rotate in unison. As shown, an axle 10 has annular grooves 12 at which the axle 10 is bent in the process of shaping. Straight cylindrical bearing portions 14 intervene the grooves 12 and carry bearing members 16 which may be of wood. The members 16 have a small clearance on the shaft 10 to allow them to be threaded on to the shaft. When roller or ball bearings replace the members 16 the grooves 12 are lengthened to permit the bearings being threaded on to the shaft 10. A surface sleeve 42, e.g. of rubber, resiliently engages members 16 and a sleeve 18 extending inwardly from a fixed ball bearing 20 at each end of the axle which has an oil seal 38. In a modification, Fig. 3 (not shown), the bearing members are roller bearings with interposed tubular spacers. Specifications 613,450, 695,163 and 706,230 are referred to.
Patent GB-1106479-A (GB)
Title: Porous pressure-sensitive adhesive tapes
Inventor: LEISTIKOW FREDERICK WALTER RUD
IPC: C09J7/38
Filed: 1965-08-12
Abstract: Polymers suitable for use in forming pressure-sensitive elastomeric coatings are copolymers of a monomer consisting of a mixture of N-alkyl maleamic acids, in which the alkyl groups preferably average from 10 to 24 carbon atoms, and a monomer consisting of an alkyl acrylate or methacrylate in which the alkyl group preferably contains 1 to 12 carbon atoms.  A suitable polymer specified was prepared by copolymerizing in aq. emulsion using a redox catalyst (potassium persulphate and sodium bisulphite), a mixture of N-alkyl maleamic acids with ethyl acrylate and two-ethylhexyl acrylate added to the polymerization charge in the mol. ratio 1:1:4, respectively.  The maleamic acids are prepared by amidating 1 mol. of maleic anhydride with 1 mol. of a mixture of alkyl primary amines in which the alkyl group is attached to the nitrogen atom by a tertiary carbon atom marketed as "Primines" 81-R. The dried, coagulated polymer was then dispersed in a mixture of toluene, n-hexane and isopropyl alcohol.ALSO:A porous pressure-sensitive adhesive tape comprises a backing of porous non-woven fabric having a retiform adhesive surface coating of a pressure-sensitive elastomeric polymer, the adhesive being substantially confined to the fibres exposed at the surface of the backing and offering substantially no impediment of passage of air of vapour through the pores of the backing.  The polymer may be a copolymer of N-alkyl maleamic acids, in which the alkyl groups preferably average from 10 to 24 carbon atoms, and a monomer consisting of an alkyl acrylate or methacrylate in which the alkyl groups preferably contain 1 to 12 carbon atoms.  Other polymers are homoacrylate polymers of alkyl acrylates in which the alkyl group contains 4 to 12 carbon atoms, co-polymers of such acrylates with an ethylenically unsaturated monomer such as acrylonitrile, itaconic acid, glycol diacrylates, vinyl acetate or acrylic acid, and elastomeric silicone polymers.  The coating may be applied to the backing by spraying a dispersion or a solution of the adhesive polymer in a volatile solvent so that droplets at the time of deposit have a solid content of 45 to 65% by weight the fabric may be composed of fibres having a denier of from 1.5 to 5, having a weight of from 30 to 50 grams per square yard and the weight of adhesive may be from 20 to 50 grams per square yard of fabric.
Patent GB-982134-A (GB)
Title: Heat transfer method
IPC: C09K5/00
Filed: 1961-09-27
Abstract: 982,134. Heating and cooling cans by foam. FMC CORPORATION. Sept. 27, 1961 [Jan. 6, 1961], No. 34735/61. Heading A2D. The temperature of an article is changed by entraining a gas in a liquid to form a foam whose temperature is different from that of the article and directing the foam on to the surface of the article. The foam clings to the surface with minimised splashing and thus effects a heat-transfer therebetween. Cans C, Fig. 2, of sterilized food being conveyed through a continuous spiral can-way 21 by a clockwise (as shown) rotating reel 24, are cooled by an air-water foam produced in foam nozzles 52 of conventional construction communicating with water manifolds 46, 47. The nozzles are disposed on the manifolds midway between adjacent turns of the spiral can-way and direct the foam downwardly along paths which are tangential to the reel 24. Spent cooling water is collected in a trough 70 in which the level of water may be sufficient to submerge the cans when at the bottom of the reel. Comparison tests are disclosed in which cans of diced red peppers at an initial temperature of 205F. were cooled in the half of the spiral can-way nearest the inlet and by (1) an air-water foam according to the invention and (2) fan type sprays of cooling water.
Patent GB-737443-A (GB)
Title: Improvements in electric capacitors
IPC: H01B3/44
Filed: 1953-12-14
Abstract: A composition used as the impregnant in an electric capacitor comprises 25 to 50 per cent of a liquid polyalphamethylstyrene, 45 to 65 per cent styrene and 0.5 to 10 per cent divinyl benzene.  In a particular example, the proportions are by weight, respectively 41.5, 56 and 2.5 per cent.
Patent GB-373583-A (GB)
Title: Improvements in and relating to smoke tube boilers
IPC: F22B37/10
Filed: 1930-11-19
Abstract: 373,583. Jointing tubes to plates. STUG KOHLENSTAUBFEUERUNG PATENTVERWERTUNG GES., Cassel, Germany. Nov. 19, 1930, No. 34819. Convention date. Dec. 5, 1929. Void [Published under Sect. 91 of the Acts]. [Class 99 (i).] The rolled over end c of a boiler smoke-tube a, Fig. 1, secured in a tubeplate b is let into an annular recess in the plate. The tube e, Fig. 2, is rolled into a tapered hole f in the tube-plate b, the tube terminating flush with the face of the plate.
Patent GB-1210906-A (GB)
Title: Improved multiple-speed bicycle hub
IPC: B62M11/14
Filed: 1969-07-10
Abstract: 1,210,906. Change-speed gear; ratchet clutches. FICHTEL & SACHS A.G. 10 July, 1969 [16 July, 1968], No. 34834/69. Headings F2C and F2D. In a two-speed (step-up and direct drive) bicycle hub comprising planets 8 on an input carrier 6 meshing a fixed sun 9 and ring 10, and first and second pawl and ratchet one-way clutches 11, 12 and 15, 16 between the carrier 6 and ring 10 respectively and the hub shell 2, in which a centrifugally automatic (as shown) or driver-controlled (not shown) conical cam sleeve 23 permits spring release of the ring pawls 15 for direct drive through the carrier pawls 11, the ring idling, or radially expands the ring pawls 15 for ratchet engagement for step-up gear through the ring, the carrier pawls ratcheting, the ring 10 pawls 15 each consist of a composite unit formed from a pawl element 15 and a pressed sheet metal rocker element 17 mounted for relative angular displacement on ring gear pawl pins 14 under the bias of a spring 18 permitting overrun ratcheting of the pawl elements 15 when the rocker elements 17 are moved to their radially outward pawl and ratchet engaged position via the cam sleeve 23, each pawl unit 15, 17 being retracted, on cam sleeve release, completely out of engagement with the ratchet 16 by a torsion spring 21. Thus the pawl and rocker units 15 are radially moved into engagement with the ratchet teeth 16 for step-up ratio by the cam sleeve 23 which (as shown) is moved automatically via flyweights 24 on a flyweight carrier 25 driven through a non-planetary step-up ratio reverse gear train 28, 29, 32, or alternatively (not shown), the cam sleeve 23 may be moved manually via a chain and Bowden cable.
Patent GB-1167162-A (GB)
Title: Production of Metal Phthalocyanine-Bonded-Polymers
IPC: D06P1/00
Filed: 1966-08-03
Abstract: 1,167,162. Coated sheet material. DAINICHISEIKA COLOR & CHEMICALS MFG. CO. Ltd. 3 Aug., 1966 [6 Aug., 1965], No. 34882/66. Headings B2E and B2K. [Also in Divisions B5, B6, C3, C4, C5 and D1] Compositions containing, as colouring component, a metal phthalocyanine-bonded addition polymer (see Division C3) are used for coating surfaces such as leather, wood, steel, concrete and glass (see Examples 48, 56-59, 63 and 71). In most cases, the compositions are applied by spraying. The composition may take the form of an organic solvent solution or an aqueous emulsion or solution. Other components included in some cases are polyvinyl acetate, titanium dioxide, casein, starch, sodium oleate, a thermosetting acrylic resin, an epoxy resin, hexamethymethylol-melamine and an ethylacrylate-styrene-N-methylolacrylamide copolymer. The metal phthalocyaninebonded polymers used in the Examples are derived from derivatives of acrylic, methacrylic and itaconic acid.
Patent GB-1303680-A (GB)
IPC: G01J3/08
Filed: 1970-07-20
Abstract: 1303680 Infrared spectrometer COMPAGNIE D'APPLICATIONS MECANIQUES A L'ELECTRONIQUE AU CINEMA ET A L'ATOMISTIQUE 20 July 1970 [21 July 1969] 35136/70 Heading G2J A double-beam spectrometer using a diffraction grating 13 has a mirror 11, parts of the collimator, pivoted to assume two extreme positions under control of a drive 17. Each extreme position corresponds to one of paths 101, 201 (reference and sample) and a common detector 30 (Golany cell). The resultant signals (produced by a chopper 5) can be compared to give a comparative reading or the reference channel can be activated automatically to produce a zero error signal. Mirrors 3 and 6 function as a low-pass filter.
Patent GB-1461337-A (GB)
Title: Draw bar maving means for making a pivotable connection with the  fifth-wheel plate of a traction vehicle
IPC: B62D49/00
Filed: 1974-08-09
Abstract: 1461337 Vehicle draw bars MAFI TRANSPORT SYSTEME GmbH 9 Aug 1974 [25 May 1974] 35153/74 Heading B7T A swan neck draw bar 7, Fig. 1, for pivotable connection with the fifth-wheel plate 2 of a traction vehicle 1 is provided with alignment setting means for setting the draw bar in alignment with the longitudinal axis of the vehicle, the alignment setting means comprising a resiliently-loaded part 12 arranged for engagement in the king-pin entry opening 10, Fig. 5, of the fifth-wheel plate 2. In the illustrated embodiment, the part 12 is V-shaped in front view and provides an automatic centring of the draw bar to its aligned position, within a limited range of pivoting of the draw bar relative to the fifth-wheel plate. During pivoting of the draw bar outside said limited range, the part 12 slides over the support face of the fifthwheel plate. The draw bar 7 includes a tongue 8 for connection with a mobile loading platform. The fifth-wheel plate 2 of Fig. 1 is carried by a pivotable arm 4 so as to enable height adjustment of the plate. In a modification of the illustrated embodiment, the alignment setting means comprises a resiliently-loaded roller.
Patent GB-819963-A (GB)
Title: Improvements in or relating to strip serving and applying device
IPC: B65B67/06
Filed: 1955-12-07
Abstract: 819,963. Packaging machines. BETTER PACKAGES Inc. Dec. 7, 1986 [June 7, 1955], No.35170/55. Class 94(1). A device for passing a loop of adhesive tape round one or a bundle of elongated articles, or round the twisted neck of a bag, comprises a frame having a channel on either side of which are presser members operable to press the tape about the article as it is passed down the channel carrying the tape with it. The tape roll is mounted in slots 9 in opposed plates 1, 2 between which the presser members are mounted and in which are slots forming the channel 79. The tape, with the adhesive side uppermost, passes over a roller 17 with flanges 18 adjustable for various tape widths, between a roller 28 and braking member 29, and over the presser members 38, 56, thus spanning the channel 79. The members 38 is mounted in a frame 35 comprising spaced plates pivoted on a fixed shaft 34 and carrying a roller 37, abutment 46 and a resilient clamping piece 45. The presser member 56 is mounted on an element 54 held within a frame 48 into which it may retract a short distance against a spring 62. The frame 48 pivots about a fixed shaft 47, and carries a knife edge 50 and platform 52. The frames 35, 48 are pivoted on arms 63, 64 connected to a lever 65 pivoted to the plates 1, 2 at 70. A spring 74 biasses the pressers to a position to receive the article. As the article 76 is passed through the gap, it presses down the tape 23 and abutment 46, the latter causing clockwise pivoting of the frame 35, and through the linkage 63-65, anti-clockwise pivoting of the frame 48 to bring the pressers 38, 56 into contact with the tape above the article. Continued movement of the article brings the knife edge 50 against the tape, and finally the tape is severed, and the free end clamped between the piece 45 and the platform 52. The article continues downwardly for subsequent withdrawal sideways and the spring 74 returns the mechanism to the state shown in Fig. 1, the tape free end being stripped from the platform 52 during the upward movement.