baber/WOPTO huggingface dataset:
Patent GB-716275-A (GB)
Title: Improvements in or relating to discharge lamp ballast units
IPC: H05B41/232
Filed: 1951-04-17
Abstract: 716,275. Supply systems for space discharge apparatus. S.M.D. MANUFACTURING CO. (PROPRIETARY). Ltd. April 17, 1951 [April 24, 1950], No. 8923/51. Class 38(4) A ballast unit for regulating the supply to a gas discharge or fluorescent lamp to be substantially independent of source voltaoge fluctuations comprises an iron cored step-up transformer 2 which is connected to the source through a magnetically separate iron cored choke 1, and to the lamp 4 through a condenser 3, the transformer core size and winding turns ratio being so calculated that the core saturates when rated lamp current is being drawn. The lamp is started by the stepped-up output voltage of the transformer, and during running the capacitor resonates with the inductance of the transformer winding. The choke 1 corrects the leading power factor of the lamp circuit, and has as low an impedance as possible prior to starting of the lamp. The magnetic circuits of the transformers and choke cores are closed and gapped respectively.
Patent GB-680833-A (GB)
Title: Manufacture of plastic articles, for example, gramophone records
IPC: B29D17/00
Filed: 1950-04-11
Abstract: 680,833. Moulding gramophone records &c. MILLER, J. A. April 11, 1950 [April 9, 1949], No. 8946/50. Class 87 (ii). Articles, e.g. gramophone records, are made from a synthetic resin such as a copolymer of polyvinyl chloride and vinyl acetate or nylon, by first making a preform by causing powdered resin particles to fit together by heating them, and then moulding the preform under heat and pressure. The preform w is made either in a mould 10, Fig. 1, or by first forming a layer, Fig. 5, of resin on a conveyer band 49 and then cutting the layer into the desired preforms w<SP>1</SP> by a reciprocating stamp 56. Both sides of the preform may be given a layer of lubricant, such as a solution of carnauba wax in ethyl alcohol, by spraying the mould 10 and the upper surface of the preform or by sprays 62, 63, Fig. 5. The preform is moulded between dies 16, 17, Fig. 3, mounted by means of a rubber cement on plates 12, 13 hinged at 14. Paper labels 18, 20 are positioned by a pin 19. The dies are closed and placed in a multiple press comprising steam-heated platens 27 ... 31, Fig. 4, slidably mounted on rods 32. Springs 34 are provided between the platens.
Patent GB-714793-A (GB)
Title: A jig for use in grinding cutting tools
IPC: B24B3/36
Filed: 1952-04-09
Abstract: 714,793. Protractors. SMALLER, J. H. May 21, 1952 [April 9, 1952], No. 9005/52. Class 97(3) [Also in Group XXIII] The apparatus comprises a flat plate A having a protractor scale B engraved thereon and a pointer E, adapted to be locked in adjusted position, pivoted thereto. This pointer is to serve as a guide for a tool or other article which is to be ground at a definite angle, the plate having an adjustable bar F on its underside adapted to be pressed against the edge of the table carrying the grinding wheel.
Patent GB-548444-A (GB)
Title: Improvements in and relating to gas blast electric circuit breakers
IPC: H01H33/32
Filed: 1941-07-17
Abstract: 548,444. Valves. BRITISH THOMSONHOUSTON CO., Ltd. July 17, 1941, No. 9050. Convention date, July 17, 1940. [Class 135] [Also in Group XXXVII] A gas-blast switch having a container for supplying adequate blast when the switch is opened on abnormal current conditions, has means for reducing the blast supplied when the switch is opened on normal current conditions. The blast may also be supplied during closure. The invention is shown as applied to a switch with an arc-chute 13 and horizontally-slidable movable contact 12, as set out in Specification 544,017, [Group XXXVII], operation being pneumatically effected from the container 27 by a rotatable shaft 22 and fluid-motor 18, 19, as in Specification 541,165, [Group XXXVII], for example. A current transformer 42 in the line to terminal 15, on operation, causes winding 41 to close contacts 43, so energizing the opening winding 33 of operating valve 28 and winding 38 of valve 35 which admits 'full blast to the arcchute. For manual operation, a button 45 closes contacts 46 to energize winding 33, 38 and contacts 47 to energize a winding 40 and deflect a pivoted flap 54 normally aligned with pipe 16. In Fig. 2, the blast-reduction is effected by obstructing the full movement of valve 35 by the stop 48 controlled by the manually-controlled winding 49. In Fig. 3 (not shown), valve 35 is shunted by a valve of smaller size, the two valves having separate operating windings.
Patent GB-1221141-A (GB)
Title: Continuous mining machine with pivot structure for mining head, gathering head and conveyor boom
IPC: E21C27/24
Filed: 1969-02-19
Abstract: 1,221,141. Mining machines. JEFFREY GALION Inc. 19 Feb., 1969 [8 April, 1968], No.9108/69. Heading E1F. A mining machine comprises a main frame 23, means, e.g. tracks 12, for manoeuvrably supporting the frame, a mining head 11 a't the front end of the frame, a gathering head 13 beneath the mining head, a discharge conveyor boom 17 extending rearwardly of the frame, and means 20 on the frame for supporting the mining head, the gathering head and the boom for independent pivotal movement about a common axis. The means 20 comprise a hollow pivot pin on each side of the machine with the mining head being supported on the outside of the pins and the gathering head being supported by a pivot member inside each pin. The boom is supported on a rod extending between the pivot members. Electric motors (27L) and 27R drive the cutting chains 31 and spirally arranged bits 30 of the mining head, and the gathering arms 15 of head 13 chain conveyor 16 with a plurality of transverse flights extend around shafts 36 and 37.
Patent GB-250017-A (GB)
Title: Improvements in lead screws or nibs of augers, bits, and the like
IPC: B27G15/00
Filed: 1925-04-06
Abstract: 250,017. Steele, J. A. R. April 6, 1925. Augers.-The points of augers, bits and like tools consist of a solid core a having a shallow double helical groove forming blunt threads of open pitch terminating in a single point at the apex of the cone.
Patent GB-1036835-A (GB)
Title: Synchronized multi-roll wet process apparatus for tubular knitted fabrics
IPC: D06B3/10
Filed: 1965-03-03
Abstract: 1, 036, 835. Fabric treating apparatus. SAMCOE HOLDING CORPORATION. March 3, 1965 [March 4, 1964], No. 9127/65. Heading D1L. A tubular fabric 62 passes through a nip formed between roller 56 and 51 and subsequently through a nip formed between rollers 51 and 59 to be treated by a liquid lying in the trough formed by the three rollers. The roller 51 is driven via a chain 53 and sprocket 52 while the rollers 56 and 59 are driven by surface contact with roller 51 and by a chain 70 passing about sprockets on rollers 56, 51, 59. This chain drive ensures synchronous running of the rollers even through the surface hardness of at least one of the associated pairs differs. The rollers 56, 59 are mounted on frames 54, 57 pivoted at 55, 58 and are baised, e.g. by actuater 60, against the roller 51. The arrangement is such that the resultant forces on rollers 56, 59 from the chain 70 act approximately through the respective pivot pins 55, 58 so that the tension in this chain does not effect the pressure of the nips. In another form (Fig. 1, not shown) only one, 20, of the presser rollers is driven synchronously with roller 12 and the chain 31 runs about a sprocket 35 mounted on an arm 36 such that when roller 20 is lifted, e.g. for threading up the fabric, the sprocket 35 is shifted to allow for the movement of the chain.
Patent GB-573821-A (GB)
Title: Building construction incorporating beams made of concrete or like material
IPC: E04B5/06
Filed: 1943-06-08
Abstract: 573,821. Girder floors. GIBSON, E., and FIDLER, W. June 8, 1943, No. 9169. [Class 20 (iv)] Relates to floor or ceiling constructions of the kind comprising a number of beams laid side by side to form a continuous surface, each beam having a load carrying part 1, Fig. 1, and lateral flanges 2-5 which are discontinued at the ends of the beams where they rest on a support. According to the invention adjacent ends 10 of the beams a, b supported on a common support c and extending in opposite directions are arranged in alternate relation with each beam bearing on the support for the full or substantially the full width thereof. The beam shown in section is hollow and its part 1 is approximately half as wide as the total width of the beam. Longitudinal reinforcing rods 11, 12, 14 and 15, and embracing rods 13, and cross bars 16, are arranged in the beam as shown.
Patent GB-128350-A (GB)
Title: An Improved Form of Railway Truck, also applicable to other kinds of Vehicles.
Inventor: MCLEAN JOHN
IPC: B61J1/10
Filed: 1918-06-04
Abstract: 128,350. McLean, J. June 4, 1918. Bodies; vehicles w i t h removable bodies. - A railway truck or like vehicle is provided with transverse rails B for housing a truck body a and with columns at the corners for supporting a second truck body , supporting rails also being provided within the truck bodies, as shown in Fig. 1. The corner pasts are of channel iron adapted to receive loose planks to enclose the ends and sides of the railway truck frame sd that it may be used when not carrying empty truck bodies. Each of the truck bodies has flanged wheels or rollers for engaging with the rails. The rails may be arranged longitudinally of the truck frame which, in such a case, may be provided with end hinged doors having short rail pieces for removal of the truck bodies to an adjoining truck or gantry. Brackets for securing the truck bodies in position may be provided. For loading and unloading the truck frame, side gantries having suitably-positioned rails, or travelling gantries with inclined and pivoted rails may be used. In another arrangement, the permanent way may be at different levels so that the truck bodies may be readily loaded or discharged. The invention is stated to be applicable to carts, drays, lorries, motors, steam wagons and the like.
Patent GB-869677-A (GB)
Title: Improvements in and relating to gun-carriages
IPC: F41A23/42
Filed: 1959-02-12
Abstract: 869,677. Gun mountings. FORSVARETS FABRIKSSTYRELSE. Feb. 12, 1959 [Dec. 17, 1958], No. 9178/60. Divided out 'of 869,676. Drawings to Specification. Class 92. This Specification describes the same guncarriage as Specification 869,676 but the claims refer to the construction whereby a firing-tube is suspended in a universal joint supported by a single pillar which is vertically below it and connected to the joint by a yoke.
Patent GB-579970-A (GB)
Title: Manufacture of lactic acid and salts thereof
IPC: C07C51/41
Filed: 1941-07-22
Abstract: In the production of alkali or alkaline earth lactates by the reaction of alkalies or alkaline earths on saccharides, the saccharide is added periodically or continuously to the alkali or alkaline earth so that at any time throughout the reaction or throughout the greater part of it there is a considerable excess of alkali or alkaline earth over the quantity of unchanged saccharide present.  The saccharide may be a monosaccharide or an oligosaccharide.  Examples describe the treatment of sucrose, dextrose and lactose.  Specification 579,969 is referred to.
Patent GB-1406780-A (GB)
Title: Photo-sensitive material for making printing blocks
IPC: G03F7/038
Filed: 1973-02-26
Abstract: 1406780 Photosensitive polymers KRAUSE OFFSET SYSTEM KG 26 Feb 1973 9289/73 Heading C3R [Also in Division G2] A photosensitive polymer is prepared by condensing an aromatic aldehyde with at least two aldehyde groups (terephthaldehyde is specified) with diacetone alcohol to produce an unsaturated aldehyde which polymerizes to produce a polymer of M.W. between 5000 and 500,000 as in the reaction scheme. The polymer is used in photoresists (see Division G2) and may be admixed with nitrocellulose or polyvinyl butyral.
Patent GB-236994-A (GB)
Title: Improvements in and relating to prepayment mechanism for gas meters and the like
IPC: G07F15/00
Filed: 1924-04-12
Abstract: 236,994. Hansford, J. April 12, 1924. Gas, supplying by meter.-The crown wheel e engageable by a coin is locked when the maximum number of coins is inserted by the arm k' of a lever k which is provided with a detent k<3> and a cam surface k<2>, the lever being actuated by a collar f on an axially-moving spindle a<1> engaging the detent k<3>. When sufficient gas has been consumed the lever k is held out of engagement with the crown wheel by the collar f making contact with the cam surface k<2>. The spindle a<1> has a screw a<2> at one end passing through the crown wheel which acts as a nut and, at the other end, a disc b to actuate the valve lever. The spindle is rotated by a worm 3a driven from the checking mechanism of the meter and engaging a worm wheel d slidably mounted on the spindle a<1> intermediate its ends. The prepayment mechanism either with or without the coin mechanism is carried on a plate a mounted outside the meter so as to be readily detachable as a unit for inspection &c. Indicators.-The collar f is grooved and carries an arm g engaging a helical groove in a sleeve g<1> which has a pointer h' for indicating the amount of gas prepaid but unconsumed. Specification 160,514 is referred to.
Patent GB-316331-A (GB)
Title: Improvements in or relating to buckets for aerial ropeways and the like
IPC: B61B7/02
Filed: 1928-03-28
Abstract: 316,331. British Ropeway Engineering Co., Ltd., and Shields, H. F. H., and Watkins, A. J. March 28, 1928. Tip-buckets; vehicle fittings.-A tip-wagon or tip-bucket is provided with a lid or an enclosing casing secured to the non-tipping support a, and the casing may form a delivery shoot or it may be pivoted to serve both as feed shoot and delivery shoot. As shown in Fig. 1 the body 16, which may be tipped by worm gearing, is enclosed within a fixed casing 17 provided with hinged, sliding, or other lids 20 and a bottom discharge outlet 19. In Fig. 3, the casing 17 is pivoted and the discharge outlet 19 can be brought to the position shown in broken lines for filling the body 16. In Fig. 4, a casing 17 with outlet 19 is fixed to the hanger 30 of a tip-bucket 16 which is normally held in position within the casing by a catch 34 and is inverted by gravity or by a handle 37, the movement being limited by a stop 39 in the casing. In a modification, not shown, the casing 17 is pivoted as in Fig. 3. As shown in Fig. 6, a hood 43 fixed to the hanger 30 of a tip-bucket comprises a fixed portion 45 and a sliding portion 46. The part 46 is moved by a handle 47 and engages a stop rod 149 in the closed position. When opened, as shown in broken lines, lugs 48 engage stops on the hanger. In modifications, Figs. 8 and 9 (not shown), the part 46 of the lid is hinged to the part 45, or the whole of the lid is pivoted on the hanger or on the trunnions of the bucket.
Patent GB-1121885-A (GB)
Title: Modified bulk polymerisation process
IPC: C08F279/02
Filed: 1966-03-03
Abstract: Acrylonitrile and a monovinyl aromatic compound are grafted on to a rubber by a process comprising (a) polymerizing with vigorous agitation in an initial polymerization zone a mixture comprising 39 to 93.1% by weight of a monovinyl aromatic compound which is styrene, an alkyl- or halogen-substituted styrene or a mixture thereof, 4-9 to 26% of acrylonitrile, 2 to 30% of rubber and 0 to 5% of additives at 60 DEG  to 140 DEG  C. until 10 to 45% conversion of the initial monomers to polymer is obtained; (b) passing the resulting mixture to at least one additional zone wherein said mixture is further polymerized at a temperature up to 220 DEG  C. until 85 to 100% conversion of monomers to polymer is obtained; (c) passing the resulting polymer to a devolatilization zone wherein said polymer is heated to a temperature of 80 DEG  to 240 DEG  C. under a pressure of 0 to 760 mm. Mg abs. and (d) recovering said devolatilized polymer, during which process from 3 to 30% of an alkyl aromatic diluent having a boiling point of 100 DEG  to 200 DEG  C. is added to the polymerizable mixture at step (a) or step (b), the per cent by weight of said diluent being based on the weight of the total reaction mixture.  Styrene, preferably together with a minor amount of alphamethyl styrene is the preferred monovinyl aromatic compound. The preferred diluent is ethyl benzene, which may be used together with another chain regulator, e.g. tert.-dodecyl mercaptan. The polymerization may be carried out in the presence of lubricants and antioxidants, e.g. the mineral oil, trisnonylphenyl phosphite and 2,6-ditert.-butyl methylphenol used in the examples, in which styrene and acrylonitrile are grafted on to polybutadiene.
Patent GB-375819-A (GB)
Title: Improvements in or relating to web roll changing mechanism for use with printing machines
IPC: B65H19/18
Filed: 1931-03-27
Abstract: 375,819. Feeding webs. HOE & CO., Ltd., R., 109, Borough Road,' London.-(Hoe & Co., Inc., R.; 138th Street, New York, U.S.A.) March 27, 1931, No. 9437. [Class 100 (i).] In a web-roll changing-mechanism, a plurality of movable supports 204, 208 are each arranged to support a web roll RX, RY running to the press and a spare web roll S, S1, and each support is moved by a separate motor, circuits being arranged that upon the depletion of any .roll all the motors are caused to operate. In Fig. 1 a finger B rests upon the surface of the running roll Rx and contact is made by arm C. A circuit is made from' the lines L1, L2 through the relay R to cause motor 64 to turn the supports to the right. Movement of cam F causes switch G to close forming a circuit in parallel-with that containing switch C. Switch G is opened by cam F1 and motor 64 stopped. During this movement the webs are'pasted, spliced, and cut. A second relay L is. provided to cause the supports to rotate in a left-hand direction. Hand switches PR, PL are provided so that the supports may be operated as desired. The circuit for each support is identical and the circuits are tied by a line T and when switches M, M1 are closed all the supports are operated simultaneously upon the depletion of any roll or the operation of any hand switch. In Fig. 2 the supports comprise bent arms 226; 227, 230, 231 and contacts W10, W11, X, X1 are provided for each roll. Upon the' depletion of the running roll, say R2, the switch W10 is closed forming a circuit from the lines L1, L2 through relay L4, contact 39 on switch Y and conductor 35. The support is turned to the left and pins 42, 38 move switches Z, Y respectively de-energizing 'relay L4 and energizing relay R2 and the supports are turned to the right until pins 38A, 38B move switches Y, Z to break the circuit. During this movement the webs are pasted, spliced, and cut. A similar operation takes place when roll S2 is exhausted. Hand switches PL2, PR2 are provided and the circuits for each support tied by lines T1, T2 so that when switches 49A, 49B, 149A, 149B are closed all the supports are operated simultaneously upon the depletion of any roll or operation of any switch. The severing means 205 may be of the type described in Specifications 348,648 and 348,658.
Patent GB-1214875-A (GB)
Title: Emergency landing apparatus for aircraft
Inventor: HIBI TATSUSABURO
IPC: B64D25/12
Filed: 1968-02-27
Abstract: 1,214,875. Suspending aircraft by parachute. T. HIBI. 27 Feb., 1968 [6 Oct., 1967], No. 9487/68. Heading B7G. Emergency landing apparatus for an aircraft A comprises a container 1 mounted on the fuselage and formed with nose portions 2 hinged to open to the dotted line positions shown in Fig. 2 under the action of mechanism 7-10 against the action of a restraining spring 6, whereby air flow may lift off the releasable upper part la of the container to enable a parachute 11 and rigging lines 12 enclosed thereby to be ejected. The rigging lines are connected by a ring 13 to a lift line 14 in turn connected to a pair of lines 19 attached to the wings and to a line 22 which is normally wound on a reel 21. The mechanism 7-10 may be operated from within the aircraft or it may be activated by a remote transmitted control signal.
Patent GB-860821-A (GB)
Title: Improvements in paper for use in the manufacture of electric cables and capacitors and other purposes
Inventor: KELK ERIC
IPC: D21H13/40
Filed: 1958-03-25
Abstract: 860,821. Paper. BRITISH INSULATED CALLENDER'S CABLES Ltd. March 24, 1959 [March 25, 1958], No. 9561/58. Class 96. Paper suitable for use in the manufacture of impregnated dielectric material is made from well-beaten wood-pulp stock through which is dispersed 2-20%, preferably 5-10% of glass fibre having a diameter of 1 micron or less and an average length of about 0.1 mm. Suitable pulp has a Schopper-Riegler value of about 90 degrees. A single ply paper may be made on a normal machine and a two-ply paper on a twin wire machine or on a singlewire machine by winding a web of wet paper and later combining it with a web of paper passing through the machine at the first press. The paper may be impregnated with a naphthenic base oil, with a high proportion of aromatics, derived from low sulphur, low wax crude oil.
Patent GB-129758-A (GB)
Title: Improvements relating to Methods of and Apparatus for Conducting High Temperature Reactions.
IPC: C10B7/06
Filed: 1918-06-12
Abstract: 129,758. Testrup, N., and Techno-Chemical Laboratories, Ltd. June 12, 1918. Chemical manufactures, furnaces for; retort furnaces; roasting-furnaces; charging and discharging.- High-temperature reactions are conducted by feeding the material to be treated through a zone of high temperature on a layer of inert heatinsulating material, which protects the conveying-means from the action of the heat. In the furnace shown, which is substantially identical with that described in Specification 115,087, a layer of inert substance, for example silver sand, is fed on to the conveyer band e from a hopper l<1>, and on this layer the material to be treated is deposited from the hopper o. At the discharge end, both substances fall on to a screen g, and the sand is returned for re-use by the screw i and the elevator j, while the agglomerated reaction material passes to the sump h. The sealing of the reaction chamber at the sides is preferably effected by the inert material, and, to allow of this, the outer wall of the hopper o may be extended downwards to form a depression in the layer into which the reaction material is fed; or the side walls of the chamber may be extended to below the level of the front wall. When the reaction material is in lump form, it is led directly into the reaction chamber by a shoot passing through the front wall. The apparatus may be used for the destructive distillation of coal, in which case pipes m are provided for carrying off the gases, and, in connexion with other reactions, these pipes may be used for supplying gases. When there are no gaseous products of the reaction to be collected, the partition b<1> between the heating-chamber a and the reaction chamber b may be omitted.