baber/WOPTO huggingface dataset:
Patent GB-385762-A (GB)
Title: Improvements in apparatus for multiplying the frequency of electrical oscillations
IPC: H03B9/02
Filed: 1932-01-22
Abstract: 385,762. Valve circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and MEGAW, E. C. S., of General Electric Co., Wembley, Middlesex. Jan. 22, 1932, No. 2020. [Classes 39 (i) and 40 (v).] Relates to circuits for valve generators of the type in which the frequency of the oscillations generated depends on the speed of the electron stream and the potentials of the electrodes, and in which the grid is highly positive ; and comprises using such a valve generator as a frequency multiplying stage The oscillations whose frequency is to be multiplied are applied to a transformer T whose secondary L is tuned by the condenser C to the fundamental frequency and is connected between the anode A and cathode K of the valve, the anode potential being derived from a battery B1 shunted by a condenser C1 in the input circuit. The grid G consists of a spiral wire whose ends are joined to two straight wires G1, G2 which with an adjustable bridge member S form a circuit tunable to the harmonic required. The grid potential is derived from a source B2 connected through a choke L1 to the bridge S, the harmonic output being taken from the wires G, G1. In operation, the grid voltage is first adjusted with zero anode bias and no input from the source so that electronic oscillations are obtained of approximately the same frequency as the source. The bridge S is then adjusted to give the desired multiple frequency and then the anode bias and filament temperature are adjusted to give maximum oscillation in the grid circuit. The anode bias is then increased until oscillations just cease and energy from the source applied to the input transformer. The grid bias and bridge member are now readjusted to give the desired controlledfrequency harmonic in the grid circuit.
Patent GB-972352-A (GB)
Title: Improvements in or relating to lift trucks
IPC: B66F9/08
Filed: 1963-01-16
Abstract: 972,352. Masted lift trucks. GENERAL ENGINEERING CO. A.B. Jan. 16, 1963 [Jan. 19, 1962], No.2061/63. Heading B8H.  In a lift truck mast assembly comprising telescoping sections 10, 12, 14, the cylinders 20 of hydraulic rams for. raising the section 12 relative to the section 10, which is secured to the truck chassis, are integral with the side members 16 of the section 10. Tubular plungers 32 are slidable in the cylinders 20 and are secured to the side members 26 of the mast section 12 which are provided with rollers 34 engaging in guide channels 24 formed in the side members 16. Further rollers, Fig. 5 (not shown) mounted on axes perpendicular to the axes of rollers 34 engage flanges 22 of the side members 16. Cross-members 28, 68 extending between the side members 26 support a ram cylinder 38, the piston-rod 40 of which is secured to a cross-member 42.extending between the side members 44 of mast section 14 which are guided on the side members 26 by rollers 48, 50. Sprockets mounted on a crosshead 64 secured to the piston-rod 40 support chains 60 which extend between the lifting carriage 54 and the cross-member 68 of the mast section 12. On supplying pressure fluid to an inlet on the ram cylinder 38 when the mast assembly is retracted, the piston-rod 40 raises the mast section 12, thereby raising the lifting carriage 54 relative to the section 14. When the section 14 is fully raised relative to the section 12, fluid passes through duets in the section 12 and through the tubular plungers 32 into the cylinders 20, thereby raising the mast section 12, together with the mast section 14 and lifting carriage 54, relative to the fixed section 10.
Patent GB-704160-A (GB)
Title: Improvements in and relating to multiply paper blockbottom valve bags or sacks
IPC: B65D30/24
Filed: 1951-01-26
Abstract: 704,160. Paper bags. PAPER SACKS, Ltd., GROSSET, W. E., and OWENS, W. V. Jan. 2, 1952 [Jan, 26, 1951], No. 2079/51. Class 94 (2) In a multiply paper blockbottom bag or sack having three or more plies 1, 2, 3 at each face of a flattened bag tube progressively overlapping and forming flaps adhesively secured together in forming the blockbottom closure, the corners of the latter are formed by overlapping tongues each exposing areas of at least two plies for adhesion with the naps, the tongues being laterally defined by slitting longitudinally the webs forming the plies and longitudinally defined by transversely perforating individually in a stepped manner each of the webs before passing them into a multiply bag tube forming machine. The bag lengths are then formed by rupturing the multiply bag tube along the perforations and no paper is thus wasted. As shown, with the end flaps of the upper face of the flattened bag tube bent inwards to form the corners, at least one ply at each corner tongue is preferably left unexposed and, at a valve corner, if'the tongue of one ply, e.g. 2, extends beyond all the others a flexible valve seal 2x is formed by it when the rectangular closure flaps 6, 7 have been sealed down along the lines 9, 9a, except at the valve corner. In a modification the webs are slit so that the tongues overlap laterally as well as longitudinally so exposing further areas of lower plies for adhesion to the plies of the flaps. In a further modiflcation the uppermost plies at a valve corner are of the same length.
Patent GB-100460-A (GB)
Title: Improvements in Holders for Adjustable Turning and the like Tools.
Inventor: O'GARA THOMAS
IPC: B23B27/16
Filed: 1916-02-14
Abstract: 100,460. O'Gara, T. Feb. 14, 1916. Tool-holders.-One or two tools are clamped in grooves between taper washers e rotatable on a clamping-bolt in a cranked holder b, which may have a Morse tapered end.
Patent GB-234019-A (GB)
Title: Improvements in smokers' pipes
IPC: A24F1/08
Filed: 1925-01-24
Abstract: 234,019. Wear, J. Jan. 24, 1925. Tobacco pipes.-A smoker's pipe wherein the stem and mouthpiece are removably fitted into an open-tended tubular connecting member which constitutes a collecting chamber for nicotine and moisture, is provided within the member with a renewable tube 10 of absorbent material, such as paper, which engages over extensions 11, 12 integral with the plug portions 3, 5 of the stem and mouthpiece respectively.
Patent GB-637938-A (GB)
Title: Improvements in or relating to systems comprising electromagnetic vibratory inverters
IPC: H02M7/62
Filed: 1948-01-26
Abstract: 637,938. Converting. ERICSSON TELEPHONES, Ltd., and HOPWOOD, F. W. Jan. 26, 1948, No. 2253. [Class 38 (ii)] In order to reduce sparking between contacts VB1, VB2 of an electromagnetic interrupter used for converting D.C. to A.C., a seriesresonant circuit comprising a capacitor C, and inductances LC and LS having linear and non- linear characteristics respectively is in series with the A.C. portion either directly or through a transformer. The inductance LS can be made by winding a coil on a core of suitable grain orientated nickel-iron alloy having rectangular saturation characteristics. The form of the resultant current wave is such that the make-and-break current at the interrupter contacts VB1, VB2 is effectively limited. In a modification, the series-resonant circuit is connected to the secondary of an auxiliary transformer, the primary of which is in series with the primary of the first transformer. In another modification, the series-resonant circuit, the primary of an auxiliary transformer, and the secondary of the first transformer are in series, while the load R is across the secondary of the auxiliary transformer. In a further modification, the series-resonant circuit is connected to the secondary of an auxiliary transformer, the primary of which, the secondary of the first transformer and the load resistor R are in series.
Patent GB-236120-A (GB)
Title: Improvements in means for attaching a motion picture film to a winding core
IPC: G03B21/32
Filed: 1925-01-26
Abstract: 236,120. PathÚ CinÚma, Anciens Etablissements PathÚ FrÞres. Oct. 25, 1924, [Convention date]. Kinematograph picture films.-A kinematograph film is attached to a winding core by reducing the width of the end 2 of the film 1 and clamping the end in a groove 3 of corresponding width formed on the periphery of the core 4. The film is clamped by a spring 6 which covers somewhat more than half the circumference of the core. The film may have a single central row of perforations, or a row along each of its edges.
Patent GB-162086-A (GB)
Title: An improved electric switch of the tumbler type
IPC: H01H23/16
Filed: 1920-01-26
Abstract: 162,086. Foster, S. E. Jan. 26, 1920. Switches, q u i c k - action, have a pivoted operating member pivotally coupled to a link which is in turn coupled to a spring- mounted element, such spring - mounted elements being adapted pivotally to carry the contact arm. The operating-member d is mounted on a pivot c in the bridge b, its Lower end being pivotally connected to a link e. The other end of the link e is pivotally connected to a bracket f, which is secured to a leaf spring g, a pin g' securing the leaf spring to the porcelain base a. The contact arm h is mounted coaxially with the axis of pivotal connection of the link e and the bracket f, its end i being bifurcated and adapted to bridge fixed terminals j mounted in recesses of the switch base. Positive actuation of the contact arm is ensured by the abutment of the link e against a transverse pin k or the heel-piece l. Fig. 3 illustrates a modified form in which only one stationary contact j<1> is employed, current passing through the leaf spring g<2> or through a copper link joining the pin g<1> and the bracket f<1>. In this case an auxiliary tension spring m is secured between the link e and the contact arm i<1>. Instead of employing a leaf spring, the bracket f<2> may be adapted to slide within a socket f<3> against the resistance of a coiled compression spring, as shown in Fig. 4,
Patent GB-574623-A (GB)
Title: Plastic material for moulding and modelling
IPC: C08L91/00
Filed: 1944-02-10
Abstract: Modelling compositions, plastic at room temperatures or slightly higher, e.g. the heat of the hand, have as an ingredient an insoluble soap of wool-grease fatty acids, to increase their pliability and extensibility.  An example of a composition plastic at atmospheric temperature is 4 parts of calcium soap of wool-grease fatty acids, 3 parts calcium stearateoleate, 6 parts mineral or vegetable oil melted together and added to 12-18 parts filler such as calcium carbonate or clay.  A plastic wax consists of 6 parts of wool-grease fatty acid and 18 parts of paraffin wax heated with 1 part of zinc oxide until the soap is formed.  The wax may be coloured with pigment or dye.
Patent GB-536077-A (GB)
Title: Improvements in devices for supporting kettles, pans or like utensils over a fire grate
IPC: F24B15/00
Filed: 1940-02-09
Abstract: 536,077. Supports for kettles &c. IRELAND, J. Feb, 9, 1940, No. 2498. [Class 126] A device for supporting kettles &c. over a domestic firegrate comprises a vertical pillar secured to the bottom of the grate or formed integral therewith and a flat plate, grid or the like carried by the upper end of the pillar so that it may pivot in a horizontal plane over the fire or from a horizontal plane into a vertical or inclined plane. As shown in Fig. 1, the pillar A is provided with slotted lugs a to receive bolts b for securing it to the grate bottom and its upper part forms a spigot to receive a socket in the plate or grid c. The rear lug a may be extended rearwardly under the boiler at the back of the grate to prevent tilting of the grate. The pillar may also have a forwardly projecting arm to serve as a support for an ashguard. Fig. 6 shows a modification in which the grid or plate c has a pin c<SP>1</SP> to engage with a slot a<SP>5</SP> in the pillar A and is provided with a lug c<SP>2</SP> which bears against the pillar in the horizontal position of the grid. The grid may be turned into an inclined position away from the fire as shown. The pillar may be adjustable to vary the height of the grid c from the bottom of the grate.
Patent GB-101750-A (GB)
Title: Improvements in Sectional Picture Puzzles.
Inventor: BROWN THEODORE
IPC: A63F9/10
Filed: 1916-02-21
Abstract: 101,750. Brown, T. Feb. 21, 1916. Puzzles.-In a sectional picture puzzle of the jig-saw type, the slab or picture-carrying medium is so cut that each piece has one, two, or more exact counterparts as regards shape. In one method of producing the puzzle, the slab is cut through the centre a along an irregular line the two halves c, c<1> of which are identical, so that the two halves of the slab may be superposed and cut up into the irregular pieces constituting the puzzle.
Patent GB-939234-A (GB)
Title: Improvements in or relating to electric trackway for toy vehicles
IPC: A63H18/02
Filed: 1960-01-25
Abstract: 939,234. Electric trackway for toy vehicles. D. K. GOWLAND, and C. W. ROBINETTE. Jan. 25, 1960 [Jan. 26, 1959], No. 2620/60. Class 132 (3). An electric trackway for toy vehicles comprises track members 1, 2, Fig. 1, having means for connecting them together and conductive track elements 5, 6 of springy strip material embedded with their planes vertical in grooves 3, 4 in a base of electrically insulating material, each conductive element projecting from each end of its track member and having bent ends which form resilient contacts and apply spring pressure mutually to two connected track members. As shown, the trackway has a groove 7 for guiding projections from a toy vehicle and the upper edges of the conductive elements are substantially flush with the surface of the track members. The track members 1, 2 are located in position by interfitting pegs 8, 9 and recesses 10, 11 and are connected by a link 14 having lugs 16, 17 which fit recesses 18, 19. In an alternative connection, a hooked member 62, Fig. 6, is engageable behind a flange 64 of a pivoted disc 65. A screwdriver slot 68 allows the disc to be rotated. A track switching member is provided at a branched track section and comprises a substantially triangular element 32, Fig. 4, which is movable to block either the straight or the curved section. The element is mounted on a plate 33 which is spring-urged at 57, Fig. 3, and connected by a thread 51 to a control unit, Fig. 5. The thread is secured to the unit and is acted on by a peg 50 on a disc 46 rotatable by depressing a flanged part 47 or 47a. The track members may be made from mouldable synthetic plastic, and the grooves may be formed in ribs projecting from the underside of the track with electrical conductors connected through openings formed in the ribs to the conductive track elements. Alternatively, the base may be sufficiently thick to accommodate the grooves. The current source may be an A.C. generator.
Patent GB-826537-A (GB)
Title: Improvements in or relating to methods and apparatus for preventing the breakage í¡í¡ of glass, due to the presence of a stone, during a drawing operation
IPC: C03B15/18
Filed: 1958-01-27
Abstract: 826,537. Glass-drawing. PILKINGTON BROS. Ltd. Jan. 27, 1958 [Feb. 14, 1957], No. 2657/58. Class 56. In the drawing of a ribbon of glass 1 vertically upward in an annealing tower, there are provided a group of normally idle mobile rollers 3a, 3b, 3c (which when moved to the active or operative position shown in dotted lines co-operate with the lowest group of other rollers 3) positioned below a series of normally active mobile rollers 3d ... 3g the lowest one, 3d, of which detects the passage of any thicker portion of the ribbon e.g. due to the presence of stones. Movement of the roller 3d to its idle position due to this cause sets into operation various electric and mechanical devices to cause the upper rollers 3e ... 3g to retract in sequence during the passage of the stones and to cause the normally idle lower rollers 3a ... 3c to assume their active positions to furnish sufficient traction on the rising ribbon to assure its continued upward movement when the upper rollers are in their idle positions. Means are provided whereby instead of the operation being entirely automatic it may be initiated by the operator e.g. when he himself detects a stone, or when the rising ribbon breaks. Visual and/or audible signals are included in the electrical circuits.
Patent GB-1057701-A (GB)
Title: Improvements relating to heat exchange apparatus
Inventor: WHEELER WILLIAM HENRY
IPC: F22G5/06
Filed: 1964-01-21
Abstract: 1,057,701. Air and gas heating stoves; superheaters. URQUHART'S (1926) Ltd. Jan. 21, 1965 [Jan. 21, 1964], No. 2663/64. Headings F4A and F4B. In separately-fired liquid, air or gas heaters or steam superheaters having a combustion chamber A with burner T and a heating chamber C containing the heat-exchange members D, gas injector means M are provided for injecting gas or air into the heater chamber at a location spaced from the outlet of the combustion chamber, to return combustion gases through a duct F to the space surrounding the outlet of the combustion chamber A. The return duct E is formed by a wall E having a throat G formed opposite the outlet of the combustion chamber A, which is surrounded by an air jacket S to which air is supplied through an air heater K comprising zig-zag ducts in the upper part of the heating chamber. Air injector nozzles M are provided in the air duct above the return duct F to cause entrainment of some of the cooled combustion gases, the mixture of air and entrained gas passing into the heating space through the throat G. The injector nozzles M are controlled by valves N and the air for combustion is controlled by a valve P and enters the combustion chamber through nozzles Q.
Patent GB-1254503-A (GB)
Title: Improvements in or relating to transistorized wide band amplification stages
IPC: H04N9/67
Filed: 1969-01-17
Abstract: 1,254,503. Transistor amplifiers; colour television. BLAUPUNKT-WERKE G.m.b.H. 17 Jan., 1969 [20 Jan., 1968], No. 2757/69. Headings H3T and H4F.  A. wideband amplifier has two transistors connected in series, a resistive element 59 being connected between the emitter of transistor 51, connected in common emitter configuration, and the base of transistor 52 from whose collector the output is taken. In Fig. 5, three amplifiers are shown, each having the base of their transistor 52 connected to a voltage divider comprising resistive elements 58, 59 of which element 59 may be a Zener diode, Fig. 3 (not shown). The power loss within the circuit, which is determined by the values of resistors 58 and 59, changes less abruptly with changing output current, Fig. 4 (not shown), such that a more constant crystal temperature and hence more linear amplification results. All transistors 51, 52 may be mounted on a common heat sink. The circuit shown is one for a video amplifier of a colour television receiver in which colour difference signals 48 (R-Y), 806 (B-Y) are fed to the bases of transistors 60, 62 respectively, the emitters of which are supplied with a " Y " signal such that an R or B signal appears at the respective outputs of the transistors. A signal provided by the summation of signals (R-Y), (B-Y), and Y at the emitter of transistor 61 gives a " G " output signal These signals pass via wideband amplifiers of transistors 51, 52 to filters 64 and hence to a triple beam colour picture tube.
Patent GB-1154060-A (GB)
Title: Lubricating Oil Additive and Composition
Inventor: SCHLOBOHM ROLAND THEODORE
IPC: C08F8/42
Filed: 1968-01-18
Abstract: 1,154,060. Amides. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 18 Jan., 1968 [20 Jan., 1967], No. 2801/68. Heading C2C. [Also in Division C5] Substituted amides are prepared by condensing an aminoamide, an aldehyde and a C 1-22  alkylated phenol, and neutralizing the resultant product with an alkali or alkaline earth metal oxide or hydroxide, the aminoamide having at least one amino nitrogen atom with at least one replaceable hydrogen atom, and being derived from a polyalkylene polyamine and a C 8-22  carboxylic acid, and optionally carbonating the product in the presence of an excess of an alkali or alkaline earth metal oxide or hydroxide.
Patent GB-709533-A (GB)
Title: Process and apparatus for arc welding metal
IPC: B23K35/38
Filed: 1952-02-04
Abstract: 709,533. Uniting by fusion. UNION CARBIDE & CARBON CORPORATION. Feb. 4. 1952 [Feb. 10, 1951 ; May 29, 1951 ; Sept. 26, 1951]. No. 2851/52. Class 83 (4) In a gas-shielded arc welding process, using a fuzible electrode, particularly for aluminium, aluminium alloys, stainless steels, high temperature alloys, low alloy steels, nickel, nickel steels and carbon steels, the shielding gas contains from ¢ per cent to 10 per cent by volume of oxygen, the balance being essentially argon. Argon from a container 30 and oxygen from a container 36 are supplied through a mixer 26 to the arc 10. The electrode 12, of metal similar to the work 14, is fed by a roll 46 driven by a motor 48 which may be automatically responsive to variations in welding voltage to keep the arc length constant. In a modification, Fig. 2 (not shown), an argonoxygen mixture is supplied from a cylinder to a hard welding gun for overhead welding, the electrode being fed by motor-driven rolls at a rate controlled automatically by voltage control means which keeps the arc voltage within Œ 0.5 volts of a selected value. The shielding gas mixture preferably contains less than 9 grains of water vapour per 1000 cu ft. of gas, and either reversed or straight polarity welding is effected. Examples are given of rate of electrode feed, ratio of oxygen to argon, &c., in particular applications.