baber/WOPTO huggingface dataset:
Patent GB-521956-A (GB)
Title: Improvements in or relating to arc welding systems
IPC: B23K9/10
Filed: 1938-11-29
Abstract: 521,956. Supply systems for welding arcs. MORELISSE, J. Nov. 29, 1938, Nos. 34714 and 34715. Convention dates, Dec. 21, 1937, and Dec. 23, 1937. [Class 38 (iv)] In a supply system for a welding transformer, wherein an electromagnetic switch in the primary circuit of the transformer is energized, at the commencement of welding, by means of an auxiliary transformer, and the primary circuit of the welding, transformer is broken when the welding circuit is broken, the electro- .magnetic switch is held during welding by a current which is dependent on the existence of welding current. The primary 1 of the welding transformer is adapted to be connected to the supply mains through the electromagnetic switch contacts 7 when the latter is energized, the ends of the secondary being connected respectively to the work 12 and through a transformer primary 10, to the welding electrode 13. The auxiliary transformer comprises an earthed primary winding 3, and a secondary 4 which is connected through the back contacts 8 of the switch, and the secondary 11 of transformer 10, 11, across the leads to the work and welding electrode. The solenoid coil 5 of the switch is shunted across the winding 11. When the electrode is applied to the work the circuit of the auxiliary transformer secondary 4 is closed and the solenoid is energized to close the primary circuit of the welding transformer, contacts 8 simultaneously being broken. Welding current then flows through the primary 10 'of the transformer, so that its secondary 11, in series with coil 5, is energized to maintain the primary of the welding transformer closed. Instead of the detaining current for coil 5 being obtained from the transformer primary 10 the coil may be connected across a resistance in the welding circuit, or the winding 10 may be inserted in a shunt circuit of the welding current circuit. Coil 5 is de-energized when the welding arc is extinguished, thereby breaking the contacts 7 of the primary 1 of the welding transformer. A retarding device, e.g., a liquid damper may be inserted to introduce a time lag. Since, in the arrangement shown the retaining current for the coil 5 is dependent on the current in the welding circuit, which current may vary considerably, in an alternative arrangement the transformer 10, 11 is replaced by a coil which is wound around both limbs of the welding transformer, whereby the voltage induced therein is less variable. In a further modification the electromagnetic switch is provided with a switching - on coil which operates when the electrode is applied to the workpiece, and a retaining-coil in parallel with the secondary of the welding transformer.. A relay in the retaining coil circuit operates to open the latter upon a predetermined rise in potential, as when the arc is extinguished.
Patent GB-346686-A (GB)
Title: Rotary internal combustion engine
IPC: F02B53/00
Filed: 1929-11-15
Abstract: 346,686. Rotary engines. DAW, A. W. and DAW, Z. W., 11, Queen Victoria Street, London. Nov. 15, 1929, Nos. 34887 and 39823. [Class 110 (ii).] Movable-abutment type ; governing and regulating motors.-Comprises a modification of the external or ratchet gearing of the intermittent-abutment rotary. internal-combustion engine described in Specification 300,784, [Class 110 (ii), Rotary engines &c.]. Trunnion discs 5, Fig. 1, fixed to trunnions 4, drive shaft discs 6, which are keyed to the shaft 7, by means of a pawl 8 pivoted to the shaft disc 6. which engages teeth 8a in the trunnion disc. Reverse rotation of the trunnion disc is prevented by pawls 2a which co-operate with teeth in a fixed ring 2. The trunnion disc 5 ceases to drive the disc 6 when its pistons are retarded to act as abutments, but further connection between the two discs is procured by a lever 10 pivoted to the driving disc 6 which engages with teeth 10b or 10c in the trunnion disc. The movement of the lever 10 is controlled by a roller 10d which is guided by a cam 12 in an end disc 13a. The position of the cam can be varied angularly by means of a handcontrolled worm wheel which meshes with teeth on the periphery of the end disc 13a. In a modified arrangement the pawl and ratchet clutch is replaced by balls or rollers 15, Fig. 5, which bear on the inclined bottoms 16b of pockets 16 in the shaft disc and engage the inner periphery of the trunnion disc. A similar arrangement replaces pawls 2a for preventing reversal of the trunnion disc. In this construction the pivoted lever 10 is dispensed with and a single cam bears on one end of a lever which is spring-supported at the other end. The pockets 16 may be made separate from the shaft disc.
Patent GB-935027-A (GB)
Title: Improvements in or relating to the manufacture of thermo-plastic materials
Inventor: CROFT PETER WILLIAM
IPC: C08J3/00
Filed: 1960-10-12
Abstract: Water, aqueous solutions, or dispersions are added to particulate polymers of acrylonitrile and substituted derivatives thereof, in an amount sufficient to bring the water content of the particulate polymer to at least 5% by weight, prior to feeding the polymer to a devolatilizing extruder such as the type described in Specification 798,912.  The polymer may be polyacrylonitrile, polymethacrylonitrile, poly-alphachloroacrylonitrile, a copolymer of butadieneacrylonitrile, a copolymer of butadiene and methacrylonitrile, or a copolymer of styrene and acrylonitrile.  The aqueous solutions or dispersions may be a latex of natural or synthetic rubber, e.g. polybutadiene or polyisoprene.  Water may be sprayed on to the polymers as they are processed in a blending machine.
Patent GB-449447-A (GB)
Title: Improvements in and relating to flat knitting machines
IPC: D04B11/22
Filed: 1935-12-17
Abstract: 449,447. Knitting. SCHUBERT & SALZER MASCHINENFABRIK AKT.-GES., 11, Lothringerstrasse, Chemnitz, Germany. Dec. 17, 1935, No. 35013. Convention date, Dec. 17, 1934. [Class 74 (ii)] Auxiliary pressers associated with the heel needles in a flat knitting-machine are provided alternately with long heads 9, and short heads 10. In knitting the leg, these all occupy a lower inoperative position below the usual presser bar 3, which presses all needles. In forming the heel, the needles are not allowed to come into contact with the presser bar 3, and the auxiliary pressers are raised to an upper position in which both long and short headed pressers act to press all the heel needles, knitting being suspended on the instep needles. During the formation of the starting courses of the sole, the auxiliary pressers are lowered to an intermediate position, Fig. 3, in which the long headed pressers only are operative, tuck stitches being formed on needles associated with the other pressers. The frame 7 carrying the auxiliary pressers is connected through an arm 6 to a rock-shaft 5, operated by another arm 11 carrying a roller 12, the roller being moved by a fork 14, or other means, into the path of a cam 17, a cam 18, or a disc 16, to locate the auxiliary pressers in their upper, intermediate and lower position respectively. In moving up, the pressers are caused to move out in front of the presser bar 3, by coacting cam projections 20, 21. A spring 19 urges the frame 7 against the jack sinker bearing 1, and another spring holds the roller 12 in contact with the cams.
Patent GB-315653-A (GB)
Title: Improvements in stropping appliances
IPC: C09K3/14
Filed: 1928-11-28
Abstract: 315,653. Hafner, W., and Breidenbenden, O. Nov. 28, 1928. Abrading and sharpening compositions.-A device for stropping razor and like blades has an operative portion composed of size, glycerine, emery powder, and tripoli to which sugar and/ or gelatine or substances containing sugar and gelatine, for example, beet juice, may be added. A layer of the mixture is glued to a backing, one side of which may be convex and has a coating of coarse material containing 19 grams of size, 7 grams of beet juice, 1 gram of sugar, ¢ gram of gelatine and 25 drops of glycerine, which are boiled and to which 4 grams of emery powder and 5 grams of tripoli are added, the flat side having a coating of finer material containing 1 gram of emery powder and 3 grams of tripoli; the coarse material may contain coarser grain emery, and may be of a deeper colour to distinguish it.
Patent GB-940885-A (GB)
Title: Improvements in or relating to electric arc welding of plain carbon steels under dried carbon dioxide as a protective gas
IPC: B23K35/30
Filed: 1961-09-29
Abstract: 940,885. Welding filler rods. GEB. BOHLER & CO. A.G. Sept. 29, 1961 [March 31, 1961], No. 35117/61. Heading C7A. [Also in Division B3] A filler rod of the following percentage composition: - C 1-1À5 Si 0À4-1À2 Mn 13À5-15À5 Fe the balance is used in the arc welding of plain carbon steels under dry CO 2 .
Patent GB-481773-A (GB)
Title: Improvements in or relating to folding or collapsible boxes, cartons and like containers
IPC: B65D5/36
Filed: 1936-12-23
Abstract: 481,773. Folding cardboard &c. boxes. MARKS & SPENCER, Ltd., and SHENFIELD, J. A. Dec. 23, 1936, No. 35274. [Class 18] A rectangular cardboard, strawboard, &c. box of the kind which is collapsable without disjointing, is made from the blank shown in Fig. 4 and is assembled as shown in Fig. 2. For collapsing, rear wall members are folded about lines 6 and side walls about lines 7. Side flaps 11 engage within the mouth of the container with sufficient friction to make them self-locking. There may be only one rear wall member, this being creased for folding. When the height of the sides 3 is greater than half the width of the container, the upper corners of wings 5 are removed to facilitate folding. Specification 249,436, [Class 18], is referred to.
Patent GB-1151775-A (GB)
Title: Resistance Welding Equipment.
Inventor: ALLEN DEREK BRIAN
IPC: B23K11/31
Filed: 1966-08-05
Abstract: 1,151,775. Resistance welding. RUBERY' OWEN & CO. Ltd. 1 Nov., 1967 [5 Aug., 1966], No. 35284/66. Heading B3R. An electrode supporting mechanism for electric resistance welders comprises a firststage fluid pressure ram for bringing the electrode up to the work and a second-stage fluid pressure ram for applying squeezing pressure to the electrode for the welding operation wherein both rams are sequentially controlled through a single common four-way valve 20, and in which the supply of pressure fluid from the four-way valve to the end 11 of the first stage ram which causes an advance of the electrode towards the work passes through a changeover valve 21 which, when moved to a changed-over condition, cuts that end of the first-stage ram off from the four-way valve and admits to that end pressure fluid at a pressure higher than that available at the four-way valve, or which is at least enough to produce a greater force on the piston 1 of the first-stage ram than the maximum opposing force that can be applied to the other side of that piston from pressure fluid passing through the four-way valve. The first-stage ram comprising piston 1 and cylinder 16 has a low pressure inlet 15 to chamber 13 supplied directly from the four-way valve 20, and an inlet 12 to chamber 11 supplied through the change-over valve 21 from the fourway valve 20. The change-over valve is also directly connected to a source of high-pressure fluid from which the four-way valve is also fed via a pressure-reducing valve 22. The secondstage ram comprises a piston 7 and cylinder 2 formed by the hollow piston-rod of the first-stage ram. A passage 14 links the chamber 13 with the chamber 10 of the second-stage ram such that these chambers are always so interconnected irrespective of the positions of the rams. The chamber 9 of the second-stage ram is fed from the four-way valve via an inlet 5 and a bored piston-rod 3 attached to the piston 1 and opening into the chamber 9. In a modification (Fig. 2, not shown), the piston-rod 3 passes through piston 1 and is attached to piston 7. A pressure-switch 23 initiates the supply of current and welding cycle timing upon a predetermined pressure being attained in chamber 9. Three different modes of operation are described according to the settings of a wafer-switch and the use of a foot-pedal (T). The four-way valve 20 and change-over valve 21 may be solenoid operated.
Patent GB-618748-A (GB)
Title: Improvements in or relating to harvesting machines
IPC: A01D57/04
Filed: 1946-11-29
Abstract: 618,748. Harvesting-machines. SMITH, H. W., and COLLETT, J. Nov. 29, 1946, No. 35417. [Class 6 (iii)] Relates to cutting mechanism on the divider of a harvesting machine. According to the invention, an upright frame member 1 is fixed to the side of the machine and a dividing shoe 2, a vertical reciprocating cutter 4, a toothed wheel 3 driven by a chain 9 engaging a sprocket 10 on the collecting drum and means 5 driven by the wheel 3 for reciprocating the cutter are all mounted on said frame member 1. The frame member and the parts thereon form a detachable unitary structure.
Patent GB-1480667-A (GB)
Title: Chamfering machine having operative units carried on a single swinging structure particularly for glass sheets
IPC: B24B9/10
Filed: 1975-08-28
Abstract: 1480667 Chamferring L BOVONE [trading as ELETTROMECCANICA LUIGI BOVONE] 28 Aug 1975 [28 Aug 1974] 35451/75 Heading B3D A chamfering machine for sheet material, such as glass sheets 5, comprises abrasive tools 10 which are mounted on a single member 16 adjustable about an axis coincident with the edge of a sheet to be processed, the axis being transversely adjustable. The glass sheets 5 are conveyed through the machine by the facing sides 2A, 3A of a pair of tracks 2, 3 mounted on a base 1 and driven by an electic motor 4. The faces of the tracks are coated with a layer providing frictional engagement with the sheets and one of the layers is resiliently pressed against the sheets. The track 2 is laterally adjustable by a screw 6 driven by gearing 7 from a handwheel 8 to accommodate sheets of different thickness. Several operative units having, for example, an electrically driven spindle 9 and a disc wheel, polishing disc or, as shown, a cup wheel 10, are mounted on respective carriages 12 adjustable by screw 13 and handwheels 14 on a common supporting beam 16. Scale meters 15 mounted with the handwheels show the strain on the tools and hence indicate the wear of the tools which can be compensated by rotation of the handles. The supporting beam is mounted by pins 18 in slides 20 movable laterally of the sheets by screws 21 driven by a geared motor 22. The pins support the beam 16 for adjustment about an axis coincident with the lower edge of the sheets, the pins ensuring notches 19 to allow passage of the sheets. Adjustment of the beam about the axis is effected by a geared motor 30 which is mounted on a bushing 32 in a shoulder 33 of the base 1 and driving a screw 34 engaging a threaded bush 35 on the beam whereby the units can be tilted up to 45 degrees to the horiziontal. Alternatively, the beam may be adjusted by a motor 24 driving a shaft 25 connected by articulated joints to a pair of screws 27 engaging threaded bushings 28 in the beam.
Patent GB-923903-A (GB)
Title: Improvements in or relating to fruit centrifuges
IPC: A47J19/02
Filed: 1959-10-20
Abstract: 923,903. Juice extractors. R. PARNIGONI. Oct. 20, 1959 [Oct. 21, 1958], No. 35570/59. Class 28 (2). A juice extractor comprises a grinding disc 10 and a screen drum 9 rotated by a motor above them and a surrounding collecting vessel 1, the disc and drum being carried on the vessel 1 by a pivot bearing 6 above the bottom of the vessel 1. The disc and drum are carried by a common hub 7 rotatably carried by a part extending up from the vessel 1 and having an upwardlyextending tube 12 for connection to a shaft 21 of the motor. Fruit is introduced through a tube 19 corresponding in diameter to the radius of the disc 10.
Patent GB-1221157-A (GB)
Title: Resilient coupling for seating in a component having an eye
Inventor: BRIZZOLESI GUSTAVO
IPC: F16F1/38
Filed: 1969-07-15
Abstract: 1,221,157. Resilient coupling. SOC. APPLICAZIONI GOMMA ANTIVIBRANTI, S.p.A. 15 July, 1969 [28 Jan., 1969], No; 35588/69. Heading E2F. [Also in Division F2] A resilient coupling, which is a force fit in an eye member 2, Fig. 1, of an eye-and-pin member, comprises a rubber sleeve .5 compressed between a metal bush 4, to which the sleeve is bonded by vulcanisation, and a plastic, preferably polyamide, bush 7. Sleeve 5 has integral extensions 6 to cover the whole length of bush 4, and may have a trapezoidal half-section, Fig. 3. Bush 7, being a force fit in eye 2a, has circumferential taper 8 to facilitate assembly.
Patent GB-778314-A (GB)
Title: Esters of hydroxyacetylenes carrying amino groups with substituted carbamic acids
IPC: C07D211/48
Filed: 1954-12-09
Abstract: The invention comprises esters of amino ethynyl alcohols of the general formul : <FORM:0778314/IV(b)/1> <FORM:0778314/IV(b)/2> (wherein R1 and R2 each represent a straight or branched chain alkyl radical containing 1 to 6 carbon atoms, R3 is an alkyl radical containing 1 to 3 carbon atoms, R4 is an alkylene radical containing 1 to 4 carbon atoms and R5 and R6 are ethylene radicals) with carbamic acid substituted with an alkyl or phenyl group, and acid addition salts of said esters with organic or inorganic acids; and their preparation by esterification of the alcohols with an appropriately substituted organic isocyanate or carbamic acid chloride.  This process may be combined with the preparation of the amino alcohol starting materials, by reacting the corresponding amino ketones not containing the ethynyl group with acetylene, preferably in the presence of an alkaline condensing agent such as sodium amide and preferably in an inert solvent, e.g. benzene or liquid ammonia. In examples: (1) the following ethynyl alcohols are prepared: 1-isopropyl-, 1-methyl-, 1-ethyl-, 1-n-propyl - and 1 - n - butyl - 4 - ethynyl - piperidol - 4 and 2 - dimethylaminomethyl - butynol-2, their hydrochlorides also being described; (2) 1 - methyl - 4 - ethynyl piperidol - 4 and phenyl isocyanate give 1-methyl-4-ethynylpiperidyl-4 phenyl carbamic acid ester; (3) 1-ethyl - 4 - ethynyl - piperidol - 4 and dimethylcarbamic acid chloride give 1-ethyl-4-ethynylpiperidyl-4 dimethylcarbamic acid ester.  The hydrochlorides of the products of Examples (2) and (3) are described. The preparation of the following esters is also referred to, the first three from the appropriate isocyanates and the remainder from the appropriate carbamic acid chlorides: 1-ethyl-4-ethynyl-piperidyl-4 phenyl -, ethyl -, methyl -, diethyl -, dibutyl-and di-n-propyl-carbamic acid esters.  The hydrochlorides of these esters are also described.
Patent GB-936103-A (GB)
Title: Improvements relating to endless conveyor structures
Inventor: WESSON JOSEPH PERCY
IPC: B65G17/06
Filed: 1960-10-19
Abstract: 936,103. Endless conveyers. DOMINION MALTING (ONTARIO) Ltd. Oct. 17, 1961 [Oct. 19, 1960], No. 35847/60. Class 78 (1). An endless conveyer suitable for moving grain undergoing malting comprises foraminous non-corrodible plates 10 each supported on parallel bars 12 to which end-plates 13 are secured. A pin 18 in each end plate engages in links 19 of driving chains having rollers 20 which are supported on side tracks B. Additional support for the foraminous plates is provided by roller units 23 which engage tracks C and which are bolted to the parallel bars 12. To replace a plate 10 and its attached supports, the pins 18 are withdrawn from the endplates 13 and the plate 10, together with its supports, is removed. By undercutting the end-plates as at 29, 30 and by sloping their  ends 31, lapping between the plates is maintained when they travel around the sprockets at each end of the conveyer. Alternatively. the end plates may be arcuately undercut and the curved surface 32 will remain contiguous with the mating surface of the adjacent plate. The lower edges of side walls D incorporate a sealing strip 28 which has wiping engagement with the upper surface of the foraminous plates. The upper extensions of the end-plates also engage the walls D in passage through the apparatus.
Patent GB-1304070-A (GB)
IPC: C08F6/00
Filed: 1970-07-24
Abstract: 1304070 Ethylene/olefin copolymerization ESSO RESEARCH & ENG CO 24 July 1970 [14 Aug 1969] 36007/70 Heading C3P A method of recovering α-olefins of boiling- point at least 50 C. below that of the diluent used from liquid effluent from a polymerization reaction containing catalyst, unreacted higher α-olefin and a cement of ethylene/higher α- olefin copolymer in a liquid diluent comprises (a) withdrawing the liquid effluent from the polymerization reaction, (b) directly flashing said liquid effluent to separate as overhead substantially all the unreacted ethylene, a minor proportion of the diluent and a major proportion of the unreacted higher α-olefin and as bottoms a polymer cement containing a minor proportion of unreacted higher α-olefin and a major proportion of the diluent, (c) heating and compressing the first flash bottoms to a second flash inlet temperature and pressure above the reaction temperature and pressure, (d) flashing said heated flash bottoms in a second flash operation to separate as overhead substantially all the remaining higher α-olefin and a minor proportion of the diluent, and as second flash bottoms a concentrated copolymer cement in diluent substantially free from ethylene and higher α-olefin, and (e) recovering said cement and said overheads. The preferred α-olefin is propylene, and a third monomer, e.g. a non- conjugated diene, may also be present. The catalyst may comprise a transition metal compound, preferably a halide of titanium or vanadium, and an organometallic compound, e.g. of aluminium. The diluent may be toluene, heptane, pentane, tetrachloroethylene or preferably hexane. The overhead containing diluent and α-olefin may be condensed and returned to the polymerization reaction. Preferably a first flashing is carried out at not more than 50 C., heating the first flash bottoms to not more than 80 C. and flashing to provide a second overhead and a copolymer cement substantially free from unreacted ethylene and higher α-olefin. Apparatus for carrying out the method is described and illustrated and an example describes the copolymerization of ethylene, propylene and 5- ethylidene-2-norbomene in hexane in the presence of a catalyst formed from vanadium tetrachloride and diethyl aluminium chloride.