baber/WOPTO huggingface dataset:
Patent GB-675791-A (GB)
Title: A process for separating portions of material from a length of material by cutting, or stamping, or cutting and stamping, and feeding the separated portions to a wrapping or covering apparatus
IPC: B21D28/06
Filed: 1950-01-30
Abstract: 675,791. Catamenial appliances. FICHTE, H. Jan. 30, 1950, No. 2323/50. Class 81 (ii). [Also in Group VIII] In a process for separating portions from a length 1 of material by cutting or stamping, and then feeding said portions to a wrapping or covering apparatus, two or more portions 3, 4, lying one behind the other in the direction of motion of the material are cut simultaneously, the cuts being such that the longitudinal axes of the portions are in the widthwise direction of the material. The invention is described as providing a process for producing insertions for sanitary towels.
Patent GB-525680-A (GB)
Title: Improvements in or relating to circuits for generating deflecting waveforms for cathode ray tubes
IPC: H04N3/237
Filed: 1939-01-25
Abstract: 525,680. Television valve generating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Jan. 25, 1939, No. 2529. Convention date, Jan. 26, 1938. Addition to 483,999. [Classes 40 (iii) and 40 (v)] The parent Specification relates to a saw-tooth line-frequency current generator comprising an inductance 3, Fig. 8, associated with a capacity, preferably its distributed capacity 4, to which is applied a saw-tooth voltage at frame frequency so as to produce the required lengthening or shortening of the lines for a trapezoidal scanned area. The saw-tooth voltage of frame frequency may be produced by a condenser 6, associated with a rectifier 2 across the oscillatory circuit 3, 4. According to the present invention-(1) the linearity of the voltage across the condenser 6 is improved by connecting it in the anodecathode circuit of a valve 7 which is controlled by the voltage generated across condenser 6 and by a further voltage of saw-tooth wave form applied e.g. to its grid; (2) to remove the distortion from symmetry of the keystone scanning field due to a direct-current component which varies in a saw-tooth manner at frame frequency, current passed by the valve 7, or a current derived therefrom, is superimposed on the current in the deflecting coil. The current derived from the valve 7 may be fed to the coil 3 through a transformer, Figs. 14, 15, 16, 17 (not shown). To prevent displacement of the scanning field during the frame return stroke, the condenser 6 may be shunted by an additional valve controlled by impulses in such a way that the discharge of the condenser during the short flank of the saw-tooth wave form passes through the valve and not through the coil, Figs. 11, 14, 15 (not shown). The coil may also be connected to the charging valve 1 through a transformer Figs. 12, 13, 14 (not shown).
Patent GB-432961-A (GB)
Title: Improvements in and relating to woven fabrics for use as baling material
IPC: D03D15/00
Filed: 1935-01-07
Abstract: 432,961. Woven fabrics ; yarns. BADDELEY, C. H., 5, Lindum Terrace, Bradford, Yorkshire. Jan. 7, 1935, No. 2569/34. [Classes 120 (iii) and 142 (iv)] A wool or like baling material comprises a fabric having the warp or weft of composite yarns formed by twisting, doubling or spinning animal fibres, such as coarse crossbred wool or worsted, with an artificial paper yarn made from strips of transparent paper, the composite yarns being woven with weft or warp yarns of wool or artificial paper. The paper and animal fibre yarns are twisted, doubled or spun in such a way that the animal fibres will be on the outer side of the composite yarn. Specification 316,777, [Class 94 (i)], is referred to.
Patent GB-1096782-A (GB)
Title: Improvements in dust control in threshing machines
IPC: A01D41/12
Filed: 1965-01-20
Abstract: 1,096,782. Combine-harvesters. R. CLAAS. Jan. 20, 1965 [Sept. 25, 1964], No. 2591/65. Heading A1F.  In a combine-harvester having a strawfeeding drum 4 behind the threshing drum 3 and concave 5, a deflector 7 extends obliquely down from the roof of the harvester-housing 1 so that its free edge 10 is closely adjacent to the periphery of the drum. The purpose of the deflector is to confine dust-laden air-currents 11 to the space above the straw-rack 6. The deflector is supplemented by a sheet-metal plate 8 to which the member 7 is bolted together with the adjustable stripping-bar 10 which forms the free edge of the deflector.
Patent GB-1271354-A (GB)
Title: Improvements in or relating to line amplifier units
IPC: H04B3/44
Filed: 1970-01-20
Abstract: 1,271,354. Repeater power supplies and supervision. SIEMENS A.G. 20 Jan., 1970 [21 Jan., 1969], No. 2688/70. Heading H4R. A repeater has separate amplifiers 103, 203, for each direction of transmission over coaxial cables 2, 3 and 4, 5, the outer conductors of the cables being connected to a screen 1 encompassing the whole repeater while each amplifier is contained in a separate screen 100, 200, decoupled by capacitors 12, 22; power being supplied over the cables and the two amplifiers being coupled by a two-wire path 14, 24, wound about an iron core. The two-wire path enables the power circuits 104, 204 of the amplifiers to be connected in parallel between the inner conductors of the coaxial cables 2, 3 of one direction of transmission. A through path for the inner conductors of cables 4 and 5 is normally effected by a by-pass relay circuit 209, the cables 4 and 5 providing power for alternate other repeaters. Relay circuit 209 operates if the transmission system becomes open circuit to the West and effects a looping of the inner conductors of cables 3 and 4 to preserve power feed to the East. A single signal generator 17 identifies the repeater and provides an input to both amplifiers. The two-wire path 14, 24 is preferably, as shown, comprised of coaxial cable sections decoupled to a partition wall 10 of the outer screen 1, the sections each being wound about a core. The inner conductors of cables 2 to 5 are taken to the screens 100, 200, by way of coaxial sections 6 to 9 decoupled to the outer screen and each wound about an iron core.
Patent GB-633052-A (GB)
Title: Improvements relating to pneumatically operated tools
IPC: B25D17/16
Filed: 1948-01-29
Abstract: 633,052. Percussive drills. CLIMAX ROCK DRILL & ENGINEERING WORKS, Ltd., and HOSKING, J. T. Jan. 29, 1948, No. 2718. [Class 124] In a pneumatically-operated percussive drill a spray ring is mounted on the drill immediately to the rear of the tool retainer and a longitudinal passage in the cylinder wall conducts water to the spray ring. As shown, a ring 21 is shrunk on the forward end of the drill and is fitted with, for example three, spraying devices which may be nipples 25 screwed into the ring and which may have fine wire gauze discs 27 to assist in the atomisation of pressure water which is supplied from a connection 13, through a valve 15 operated simultaneously with an air valve 10, to a longitudinal passage 20 in the side wall of the drill and thence through a passage 24 to an annular passage 22 in the ring 21. In a modification, Fig. 4 (not shown), for use with a static water supply, air may be supplied through a second longitudinal passage to act as an ejection medium to form the water spray. According to the Provisional Specification the spray ring may be integral with the body of the drill, and the water valve 15 may be in the form of a ball.
Patent GB-1027562-A (GB)
Title: Process for the production of symmetrical trioxane
Inventor: KOCHER ERNST-ULRICH
Filed: 1963-01-22
Abstract: Symmetrical trioxane is produced by distilling an aqueous formaldehyde solution in the presence of small quantities of ammonia, an acid amide, an acid imide or an organic nitrogen base and/or in the presence of small quantities of organic hydroxy compounds having substantially no effect on the boiling-point of the mixture and in the presence of a quantity of acid sufficient to reduce the pH below 2.  In a preferred embodiment 1,3,5-trioxane is produced from an acidic aqueous solution containing formaldehyde by azeotropically distilling an aqueous solution containing 30-70% by weight of formaldehyde and at least 0.1 mol per litre of a Lewis acid with a high dissociation constant in the presence of one or more of the following:-ammonia, an alkylamine, an arylamine, a cycloalkylamine, an alkyl carboxylic acid, an arylsulphonic acid amide, a cyclic amine, urea, an N-alkyl urea, an N-aryl urea, a thiourea, a monohydric alcohol having at least 4 carbon atoms, a polyhydric alcohol having at least 3 carbon atoms or an alkanolamine, and separating the 1,3,5-trioxane from the distillate.  Preferably the trioxane is separated from the distillate, which contains some water and formaldehyde, by adding a low-boiling trioxane solvent, not miscible with water, in the form of a liquid to the vapours that have distilled over, condensing the mixture, separating the organic phase from the aqueous phase which can be recycled, and distilling off the solvent.  The preferred acids for use in the process are mineral acids or sulphonic acids and the process may be carried out continuously or discontinuously.
Patent GB-725426-A (GB)
Title: Self-regulating device for braking systems of vehicles
IPC: B60T8/32
Filed: 1953-01-30
Abstract: 725,426. Vehice brake control systems. TECALEMIT SOC. ANON. Jan. 30, 1953 [Feb. 13, 1952], No. 2774/53. Addition to 690,539. Class 103 (1) [Also in Group XXIX]. The invention relates to an improvement in the skid prevention brake control mechanism for vehicles as described in the parent Specification wherein, for a given direction of movement, one wheel pair is caused, as by the longitudinal tilting of the vehicle body on braking, to be more heavily loaded than the other wheel pair, and the skidding of the less heavily loaded wheel pair is used to bring about an angular displacement of the three sheaves e, f and g so as to cause the sheave g to be laterally displaced to operate an exhaust valve 136 to reduce the brake cylinder pressure and thus minimize the skidding. The improvement introduced is to provide correction also in the circumstances wherein the more heavily loaded or reference wheel pair passes on to a slippery part of the track and is thus caused to skid instead of the more tightly loaded wheels. In this case the sheaves e, f and g would take up the position shown in Fig. 2 in which the sheave g is able to move inwardly towards the thrust member 140 and this movement is used to cause a second valve member 135 rigid with the valve member 136 to open an exhaust port 132 and allow a reduction in brake cylinder pressure also under these new conditions. A practical embodiment of the double exhaust valve is shown in Fig. 6. Slidable valve seats 147 and 148 are normally kept pressed against the valves 135 and 136 by a spring 149, the seats abutting against spring rings 153 and 154. In the event of movement of rod 139 to the right as a result of skidding of the reference wheel pair as described above, the brake cylinder pressure acting against the greater area of valve 135 causes it to lift from seat 147 and allow exhaust through ports 145. The invention includes also a special arrangement of the brake rigging to ensure that one wheel pair becomes more heavily loaded than the other. This is provided, as shown in Fig. 5, by including the links BA supporting the outer brake blocks SA so that for a given direction of movement of the vehicle one wheel block will have a self-tightening action.
Patent GB-714681-A (GB)
Title: Improvements in or relating to plain bearings
Inventor: TAIT WILLIAM HENRY
IPC: F16C33/14
Filed: 1951-02-05
Abstract: 714,681. Coating with metals. GLACIER METAL CO. Ltd. Jan. 18. 1952. [Feb 5, 1951; April 25, 1951], Nos. 2796/51 and 9639/51. Class 82 (2) [Also in Group XXII] in a method of making plain bearing surfaces comprising a copper-clad structure containing 5-50 per cent. of lead bonded to a steel &c. backing, a copper sponge structure is subjected to heat treatment at sintering temperature while immersed in molten lead. Copper powder is applied from a hopper 2 to form a layer 3 on a copper-plated steel strip 1 which is continuously fed through a sintering furnace 4 oontain:ng a reducing atmosphere of hydrogen or a mixture of hydrogen and nitrogen in which the powder becomes partially sintered and bonded to the steel backing The composite strip then passes through a bath 5 of molten lead protected from oxidation by a floating cover or a gas blanket and which is heated by burners 6 to have a temperature gradient so that the strip is near sintering temperature at entry and is cooled to a temperature just above the melting point of lead as it leaves. The strip then passes through a chamber 7 where it is wiped to remove excess lead and cooled in a neutral or reducing' atmosphere before passing into the open air for cooling The bi-metallic strip so formed may be used for making bearing liners, sleeves and external bearing surfaces, thrust washers &c. In a modified process the partially sintered strip is severed into lengths which are treated in batches in a chamber containing a reducing gas which is heated by a bell-type electric furnace. After the temperature has been raised sufficiently to reduce all. oxides on the copper sponge, molten lead is introduced into the chamber, and heated near sintering temperature after which it is allowed to cool and is run off just before it solidifies. In another example the copper lead layer is formed on the inner face of a tube by spinning the tube between end plates with copper powder inside while the tube is heated in a neutral atmosphere to bring about partial sintering, molten lead then being introduced into the tube. In all examples modifications in the spongy texture of the copper may be brought about by the introduction of small percentages of tin, silver nickel, arsenic or silicon powders. Specification 676,209 is referred to.
Patent GB-1234924-A (GB)
Title: A control system for a hydraulic control device
IPC: F15B9/08
Filed: 1969-01-17
Abstract: 1,234,924. Hydraulic motor control circuits. DEERE & CO. Jan. 17, 1969 [Jan. 17, 1968], No. 2867/67. Heading F1P. In a hydraulic motor control circuit comprising a constant volume pump 15 Fig. 1, a closed centre control valve 24 having a first open position whereby pump delivery is connected to one side of the motor cylinder 25 and having a second closed position, and having a pump valve 1 which when the control valve 24 is closed is held open by direct action of pump delivery through lines 21, 33 which are thus connected to a return reservoir 29, the dump valve is moved to its closed position by by pressure of fluid having passed through the open control valve whereby pump delivery is free to flow at all times through either the control valve or the dump valve. The circuit also includes an open centre valve 17 for controlling a further motor 18 and a spring-biased pilot valve 3 having an orifice 11 therein and a check valve 4 which together with the dump valve are assembled in a housing 22 as shown in Fig. 2. Also the outlet side 26 of the valve 24 is connected at a point upstream of the cylinder 25 by a line 40, check valve 6 and restrictor 14 to a pilot line 41 leading to one end of the dump valve 1 and to an orifice 13 controlled by the pilot valve 3. In operation and with valve 24 closed, pump delivery passes through the opencentre valve 17 and line 21 to housing 22, an annular groove 44 and line 33 thereby connecting dump valve 1 to a line 43 leading to the return 29. On moving valve 24 to its open position either manually or by a servo-linkage 48, fluid passes through lines 40, 41 to a chamber behind the dump valve 1 and through an orifice 12 in said valve 1 thereby causing valve 1 to be seated. The resulting pressure rise in line 33 increases flow through orifice 11 resulting in pilot valve 3 being moved to the left so as to uncover orifice 13. Fluid then flows from line 21 through orifice 13 and increased flow through orifice 11 unseats valve 5 and allows a large flow through line 23, valve 24 and a check valve 27 to the cylinder 25. Return of valve 24 to its closed position results in the opposite sequence of events and opening of dump valve 1 to its by-pass position.
Patent GB-1204791-A (GB)
Title: Safety helmet with improved stabilizing and size adjusting means
Inventor: FRIEDER LEONARD PETER
IPC: A42B3/10
Filed: 1968-01-18
Abstract: 1,204,791. Safety helmet. L. P. FRIEDER. 18 Jan., 1968 [6 Feb., 1967], No. 2876/68. Heading A3V. A safety helmet comprises a rigid shell 21, Fig. 7, which encloses a wearer's head, having a continuous bottom edge 21d supported out of contact with the head by a rigging means which include an inelastic head band 46 anchored to either side of the helmet and size adjusting means 80 comprising pads 81, 86 attached to the headband. The pad 81 is made of resilient material and has on one side one set of elements of a hook and loop fastener which co-operate with the other set of elements on the head band or on a spacer pad 86 which has one set of elements on one side and the other set on the other side. Spacer pads 111, 112 may also be included between the shell 21 and the earcups 106, Fig. 15. The earcup is secured to the shell by an elastic band 110 connected to the earcup by fasteners 108, 109. The helemet may also include a beading element 35, Fig. 7, as claimed in Specification 1,204,792.
Patent GB-432564-A (GB)
Title: Improvements in or relating to spring mattresses and the like
IPC: H02K19/28
Filed: 1934-01-29
Abstract: 432,564. Spring mattresses. CROWN BEDDING CO., Ltd., and SECCOMBE, J. C., 46, Macdonald Street, Birmingham. Jan. 29, 1934, No. 2921. [Class 52 (iv)] Upholstery springs are carried by one or more subframes each having end bars b spanning the main frame and themselves spanned by a series of bearer bars d, the bars being of metal and of channel or similar section, the ends being flattened to facilitate connection to each other and to the mattress frame. The rivets f by which the bearer bars are connected to the end bars may be utilized to secure the upholstery springs.
Patent GB-361720-A (GB)
Title: Harpooning devices for anchoring aircraft
IPC: B64B1/00
Filed: 1931-01-29
Abstract: 361,720. Anchoring aircraft. OEHMICHEN, E., Rue des Graviers, Valentigney, Doubs, France. Jan. 29, 1931, No. 2936. Convention date, Feb. 6, 1930. [Class 4.] An anchoring device for an aircraft comprises one or more harpooning devices 2 arranged at the aft end, or fore and aft, of the body 1 of the aircraft and adapted to shoot harpoons 3 into the ground, ropes 5 attached to the harpoons being wound on winches 4 which are first braked to stop the aircraft and then revolved to tow the aircraft back above its point of anchorage. The discharging devices 2 are sloped to enable the harpoons to be shot downwardly and forwardly. Two discharging devices may be arranged in parallel at each end and be operated simultaneously, one winch only being necessary for each pair. A screw brake such as 6 may be employed for the winches and rupture of the rope may be avoided by providing yielding means in the rope itself or in the support for a sheave 9 over which the pulley runs. The harpoon guns are actuated by a compressed fluid.
Patent GB-118834-A (GB)
Title: Improvements in Caulking Machines.
Inventor: GAY NELSON
IPC: B63B5/06
Filed: 1918-02-19
Abstract: 118,834. Gay, N. Sept. 7, 1917, [Convention date]. Caulking.-A caulking-machine with a reciprocating knife 28 sliding between guides 4 has a carriage 10 fitted with supporting and guiding rollers 22, 24, 25 and adjustable on the guide-members 4 to control the penetration of the knife. Springs 7 are interposed between the frame 1 and carriage 10, and a detent 12 engaging a rack 14 holds the carriage in its adjusted position. A guide 15 for the caulking- material is cast integral with the carriage; a tucking-lip 17 is pressed against the knife by a spring 18. To facilitate the threading of the material, the side 20 is made movable.
Patent GB-572138-A (GB)
Title: Improvements relating to crystal detectors
IPC: H01L21/48
Filed: 1942-03-06
Abstract: 572,138. Wireless receiving apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., and KINMAN, T. H. March 6, 1942, No. 2992. [Class 40 (v)] A crystal detector for ultra high-frequencies comprises a crystal 1 of silicon carbide mounted on a resilient wire 2 attached to a metal holder 4 on a tubular casing 5 of lowloss ceramic material. The co-operating contact 3 is adjustably mounted on a holder. 7. Both of the engaging surfaces are ground to knife edges which are set at right angles to minimize capacity. The casing is filled with solidified insulating material such as paraffin wax so as to retain the elements in the adjusted position. Specification 5332/07, [Class 40], is referred to.
Patent GB-644159-A (GB)
Title: Improvements in couplings for trailer vehicles
IPC: B60D1/06
Filed: 1948-02-03
Abstract: 644,159. Couplings for vehicles. BILLING- TON, H. E. Feb. 3, 1948, No. 3102. [Class 103(v)] A coupling between a tractor and trailer comprises a ball and socket joint 11, 12 which parts remain permanently in engagement and a part 19 attached to the tractor and which is provided with a tapered hole 20 to accommodate the tapered shank 15 of the ball member 12. Pivoted to the underside of the member 19 is a slotted plate 24 having one or more inclined surfaces 29 which engage the tapering part 18 of the head 17 to draw the shank 15 into engagement with the hole 20. A locking plunger 30 is provided to retain the locking plate 24 in position.
Patent GB-1394403-A (GB)
Title: Impact wrench
IPC: B25B21/02
Filed: 1973-01-22
Abstract: 1394403 Impact wrenches ATLAS COPCO AB 22 Jan 1973 [31 Jan 1972] 3122/73 Heading B3N An impact wrench comprises an anvil 13, a power rotated hammer 15 and a torsion unit for transmitting rotary impacts from the anvil consisting of a torsion bar 21 and a sleeve 17, said sleeve slidably receiving said torsion bar with one end, said torsion bar being adjustably positioned in the sleeve and locked in place. In Fig. 1 the internal surface of the sleeve is splined to drivingly coset with splines 21 on the torsion bar. The parts are axially locked by pin 22. The embodiment of Fig. 3 has the torsion bar of hexagonal shape to co-operate with similarly shaped internal bores in sleeve 17 and anvil 14.
Patent GB-1260166-A (GB)
Title: A method of preparing a mixture of plastics material and filler material for injection into molding dies
Inventor: MCINNIS STIRLING ALEXANDER
IPC: B29C45/46
Filed: 1969-03-05
Abstract: 1,260,166. Injection moulding apparatus. S. A. MeINNIS. 5 March, 1969, No. 3159/70. Divided out of 1,260,163. Heading B5A. In a method of preparing a mixture of plastics and filler materials for injection into a mould 112 the plastics material is supplied to a receptacle 10 in which it is melted and continuously circulated by a pump 20, the filler material is supplied to a receptacle 36 to which liquid plastics material can be supplied from the receptacle 10, the mixture being continuously circulated by a pump 50, and the mixture: is supplied to a holding receptacle 64 in which it is circulated by a pump 76 and from which it can be delivered to the mould 112. The receptacles 10, 36 and 64 are provided with heating jackets 14, 38 and 70 respectively to maintain the materials just above the liquefying temperature. Valves 30, 58 and 90 permit circulation through the receptacles or delivery to the next receptacle or the mould. When valve 90 is closed and pistons 166, 160 withdrawn, the pump 76 delivers the mixture through an injection gun 82 to the mould. When the mould is full additional material is supplied thereto by the piston 166 to compensate for shrinkage due to cooling. As shown in Fig. 4, the injection gun 82 is movable towards and away from the mould by means of a piston 122 fixed to the machine frame 110 and a movable cylinder 128. Piston 166 is operated by a piston 164 and cylinder 148. A piston 160 for clearing residue from a passage 102 in the injection gun is operated by a piston 158 and cylinder 142. Suitable thermoplastic materials mentioned are ABS, nylon and polythene, and fillers specified are glass or synthetic fibres, particulate A1 powder, woodflour, particulate asbestos and mica.