baber/WOPTO huggingface dataset:
Patent GB-515762-A (GB)
Title: Improvements in or relating to high frequency amplifier arrangements
IPC: H03F3/52
Filed: 1938-06-11
Abstract: 515,762. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and GREEN, E. June 11, 1938, No. 17417. [Class 40 (v)] Distortion in a driven high frequency amplifier due to the effect of the non-linear load imposed by its grid on the driving amplifier is overcome by arranging the input and output circuits in series with the valve. The grid of VI is earthed through condenser C4 which may be adjustable to neutralize the inductance of the grid lead. Input is applied from L1 to the tuned circuit L2 C2 connected between the valve cathode and earth while the output is taken from the circuit L3 C3 in the anode lead. Due to this arrangement the input contributes power to the output and there is in effect a rectilinear load on the input circuit which " swamps " non-rectilinearity due to grid current. The cathode of the valve may be heated from an earthed supply by employing two conductors in parallel for inductance L2 and using them to carry the heating current. The two conductors may be arranged coaxially with insulation between. An embodiment of the invention using valves in push-pull is described with reference to Fig. 2 (not shown). Reference has been directed by the Comptroller to Specifications 489,289 and 491,803.
Patent GB-827455-A (GB)
Title: Fibres, filaments or yarns made from a mixture of cellulose acetate and a polymer
Inventor: JR HARRY WESLEY COOVER
IPC: D01F2/28
Filed: 1955-11-02
Abstract: Fibres, filaments or yarns are spun from a solution in an organic solvent compatible with both ingredients containing from 70% to 95% by weight cellulose acetate and from 30% to 5% of a homopolymer of the monomer CH2= C(R)CON(R1)(R2) where R is H or CH3 and R1 and R2 are C1-4 alkyl or where R is H, R1 is H and R2 is C1-3 p  alkyl, or where R is CH3, R1 is H and R2 is C2 or C3 alkyl or from 30% to 5% of a copolymer of a mixture of such an amide and another compound having a >C=C< grouping.  The cellulose acetate may have an acetyl content above or below 42% by weight.  The organic solvent may be acetone, methylene chloride, dimethyl formamide, dimethyl acetamide or a methylene chloride/methanol mixture.  Compounds which may be copolymerized with the amide are vinyl esters, vinyl halides, acrylic and methacrylic nitriles, amides and esters, maleic and fumaric nitriles, amides, esters and mixed ester-amides, and maleic anhydride.  The polymer or copolymers may be produced by solution, emulsion or bulk polymerisation using free-radical peroxide catalysts, heat or ultra-violet light.  In examples, fibres are spun from an acetone solution of cellulose acetate, and (1) poly-N-isopropylacrylamide; (2) poly-N,N-dimethyl acrylamide; (3) poly N-methyl acrylamide; (5) poly-N-methyl-N-ethylacrylamide; in Example (7) fibres are spun from a methylene chloride/methanol solution of cellulose acetate having an acetyl content above 42% by weight and polyN,N-dimethylacrylamide and in Example (9) from an acetone solution of cellulose acetate and a copolymer of N-ethylmethacrylamide and methyl acrylate.  In Examples (12) and (13) fibres are spun from dimethyl formamide and acetone solutions containing a copolymer of N,N-dimethylacrylamide and N-isopropyl acrylamide and cellulose acetate having contents above and below 42% by weight.
Patent GB-853097-A (GB)
Title: Improvements in and relating to a hinge for windows having a sash tiltable on a horizontal axis, and windows comprising such hinges
IPC: E05D7/085
Filed: 1959-05-22
Abstract: 853,097. Hinges and pivots. RASMUSSEN, V. B. K., [trading as RASMUSSEN & CO., V. K.]. May 22, 1959 [May 23, 1958], No. 17590/59. Class 65(2). A hinge for a window sash tiltable on a horizontal axis comprises a first component having two spaced projecting pins 8, 9 which are guided for reciprocating movement by slots 4, 5, respectively, provided in the second component and forming a V, each slot being at least as long as the distance between the pins and an aperture 6 being provided opposite the slot 4 so that the pin 8 may leave this slot when the pin 9 is located at the end of the other slot. In the closed position of the window both pins lie in the slot 4 and the pin 9 is located near the point of the V, and as the window is opened through 90 degrees the pin 9 slides to the opposite end of the slot 5 and the pin 8 rises until it occupies the initial position of the pin 9. The window may be opened through a further 90 degrees about the pin 9, the pin 8 passing through the aperture 6 and describing an arc 10. The portion of the second hinge component 3 which projects beyond the window frame 1 may be movably connected to the remaining portion to enable it to adopt a concealed position when not in use. In a modification (not shown) the component 3 is mounted with the slot 4 horizontal and the slot 5 pointing vertically downwards. Means such as a spring loaded cover may be provided at the aperture 6 to prevent unintentional displacement of the pin 9 therethrough, or the pin 8 and aperture 6 may have a smaller diameter than the pin 9.
Patent GB-1393971-A (GB)
Title: Cutting machines
IPC: B26D7/06
Filed: 1972-04-17
Abstract: 1393971 Cutting apparatus W BAUMANN 17 April 1972 [15 April 1971] 17645/72 Heading B4B [Also in Division B8] A cutting apparatus for cutting flat materials comprises a punching device 2 arranged for vertical reciprocation above a conveyer 1 on which the material to be cut is laid, the conveyer being moved under the punch by drive means and formed from a plurality of plates 10 pivotally connected together and guided by rails 16. The plates 10 are connected to each other by hinges 8, the hinge pins 18 extending beyond the ends of the plates and provided with rollers 14 for engagement with the guide rails 16; conical pins 9 engage corresponding holes in the mating plates so as to accurately align the plates. The conveyer is driven by discs 17 mounted on shafts 26, 27. The discs are formed with notches 19 adapted to engage the rollers 14; guide plates 21 are provided to prevent the rollers from leaving the notches. The shaft 26 at the input end of the conveyer is driven by an electric motor, the other shaft 27 being coupled by a belt 28 to a magnetic brake 23 so that the plates are pressed together during their travel through the punching machine. A support plate 22 is provided under the conveyer to take the thrust of the punching operation.
Patent GB-463131-A (GB)
Title: Improvements in or relating to welding rods and method of making same
IPC: F16N13/20
Filed: 1935-06-19
Abstract: 463,131. Uniting by fusion. WORTMANN, A. June 19, 1935, No. 17653. Void. Convention date, April 30. [Class 83 (iv)] A welding-rod, particularly for electric arc welding, is provided with one or more longitudinal or helical grooves to contain flux paste. The rod a, Fig. 1 may be formed with one or more helical grooves b of rectangular section to secure the paste. The helical grooves may be formed by twisting a flat strip or a strip d profiled as shown in Fig. 3, so as to obtain undercut grooves. In a further form the undercut groove is produced by making an open slotted tube g, Fig. 5, which is filled with flux paste. The filling operation may be effected during the bending or drawing operation. A strip may be bent to S-section to form undercut grooves to receive paste. In a further form, Fig. 7, a double T-section tube r, s is formed to provide two undercut grooves t to receive flux. The open grooves &c. may be closed by folding or helically winding over the rod a band of metal or of paper &c. provided with additions to render it electrically conductive. Further, in all cases a current supply wire such as h may be embedded in the paste. The rod may also consist of a rod profiled with longitudinal grooves or of two rods twisted together. The grooves may be produced before, after or simultaneously with the twisting.
Patent GB-1109261-A (GB)
Title: Improvements relating to automatically controlling a pressure
Inventor: DUCKWORTH PETER
IPC: G05D16/16
Filed: 1964-04-29
Abstract: 1,109,261. Fluid-pressure servomotor systems. SPERRY RAND Ltd. May 27, 1965 [April 29, 1964], No. 17714/64. Heading G3P. A system for controlling the pressure in a line 11 comprises a relief valve 29 integral with a piston 24 formed with a restricted passage 16 communicating with a pilot valve 13 loaded towards the closed position by an adjustable spring 14 and a back pressure in chamber 17 controlled by a servo-operated bleed valve 25 connected with line 11 via restriction 26. The valve 25 has a main spool 31 controlling bleed-off from line 27 via ports 42, 43, the main spool being positioned by a pilot spool 36 connected to a torque motor 35 and working in a sleeve 36 integral with the main spool. The torque motor, and hence the main spool, may be positioned in accordance with the speed of a web being wound on to a roller, and line 11 may be connected to a servomotor controlling axial displacement of the roller, the latter connection being controlled by means responsive to axial misalignment of the web relative to the roller at a point remote from the roller. The speed of displacement of the roller is thus controlled by the speed of the web, since the latter controls the pressure of the supply to the roller servomotor by controlling the position of relief valve 29.
Patent GB-530706-A (GB)
Title: Improvements relating to built-up crankshafts
IPC: F16C3/12
Filed: 1939-06-17
Abstract: 530,706. Crank shafts. BRISTOL AEROPLANE CO., Ltd., and FEDDEN, A. H. R. June 17, 1939, No. 17756. [Class 80 (ii)] In a built up crankshaft wherein the split web 11 is secured to the pin 17 by bolts 20, 21 inclined oppositely to the plane containing the shaft and pin, the slit 26 in the web is skewed so that the peripheral extent of each horn 24, 25 of the web is increased in the region of the bolt hole which is farther from the crankpin axis and distortion of the joint, following tightening of the bolts, is prevented. An angle of 11 degrees is referred to. The face of the web adjacent the crankpin bush may be formed with tapering portions 32, Fig. 6, at either side of the slit. The taper t may be .005 inches over an arc of 1¢ inches on each horn. The sides of the slit are parallel in the region of the bolt holes but may be chamfered at the outer edges. The bolt heads and nuts and the ends of the bolt holes may have part spherical surfaces separated by thin washers of similar form.
Patent GB-1514533-A (GB)
Title: Holing device for a high-pressure gas bottle
IPC: F17C7/00
Filed: 1975-07-22
Abstract: 1514533 Discharging gas containers I TAKEYASU 22 July 1975 [22 July 1974] 17841/75 Heading F4P A holing device for piercing the cap of a gas bottle 11 comprises: a solenoid operated plunger 3 extending perpendicular to a base plate 1; a trigger 2 mounted on plate 1 for pivotal movement about an axis parallel to plate 1 and engaged at one end by plunger 3; a trigger holding lever 6 mounted on plate 1 for pivotal movement about an axis perpendicular thereto and having one end engaging the other end of trigger 2; a bent lever 7 mounted for pivotal movement about an axis perpendicular to plate 1 and having one arm in engagement with the other end of lever 6; a spring 8 connected between said one arm and said plate 1; and a piercing needle 10 having a head which is engageable by the other arm of lever 7. Normally, the lever 7 is held in the full line position shown by its engagement with lever 6 which in turn is held by trigger 2. Actuation of plunger 3 moves trigger 2 out of contact with lever 6 which is then freely rotatable, spring 8 causing lever 7 to be rotated to the broken line position, said other, shorter, arm of lever 7 engaging the head of needle 10 to cause the latter to pierce bottle 11. Valve means 17 are provided for selectively connecting the bottle 11 to a radio beacon buoy antenna or to the atmosphere (Figs. 5 to 11, not shown).
Patent GB-841639-A (GB)
Title: Improvements in or relating to electrostatic precipitators
IPC: B03C3/74
Filed: 1957-06-05
Abstract: 841,639. Electrostatic precipitation. APRA PRECIPITATOR CORPORATION. June 5, 1957 [Dec. 6, 1956], No. 17853/57. Class 39(1). Gas cleaning apparatus includes a dust collecting electrostatic precipitator section having a housing 10 divided into banks of collecting compartments 18 by longitudinal and transverse partitions 22, 24; an outlet section superposed on the collecting section and divided, by extensions 19, into a series of compartments having ported ends which terminate in a perforate arcuate surface 26; an imperforate arcuate surface 27 continuing from the perforate surface to form therewith a cylindrical duct member 29; and purging means for the removal of dust particles from the collecting section comprising in combination a cylindrical discharge duct 34 mounted within the cylindrical duct member 29 for rotation about its longitudinal axis and circumferentially arranged branch ducts 36 projecting from the discharge duct 34 for directing the flow of purging fluid therethrough when in confronting relation with the perforate surface 26 and to seal off the flow of purging fluid therethrough when in confronting relation with the imperforate surface 27. The branch ducts 36 can be equally displaced circumferentially around the discharge duct 34 and are axially displaced therealong for cleaning successive banks of compartments 18. The purging fluid is drawn from the main gas flow by an induced draught fan in outlet duct 39, the course of the fluid being from the precipitator inlet through a single compartment 18 thence through the branch duct 36 in register therewith to the duct 34 and axially outwards through ports 32 to outlet duct 39. The discharge duct 34 can be rotated intermittently or continuously by a motor 42 driving the trunnions 30. Power may be shut off from that compartment 18 which is in register with a duct 36. Specification 813,496 is referred to.
Patent GB-1330762-A (GB)
Title: Water-soluble metal complex disazo dyestuffs and process for  their preparation
IPC: C09B62/495
Filed: 1971-05-28
Abstract: 1330762 Water-soluble metal complex disazo dyestuffs FARBWERKE HOECHST AG 28 May 1971 [1 June 1970] 17858/71 Heading CAP Novel 1 : 1-copper-, 1 : 2-chromium- and 1 : 2-cobalt complexes of disazo dyestuffs of the formula wherein is the radical of a diazo component of the benzene or naphthalene series which carries a hydroxy group in ortho position to the azo group, n is zero or 1, m is 1 or 2, and X has one of the formulµ in which R<SP>1</SP> is H or C 1-4  alkyl, R<SP>11</SP> is H, C 1-4  alkyl or phenyl and Y and Y<SP>1</SP> are each F or Cl are prepared by coupling the appropriate complex of a mono-azo dyestuff of the formula (itself prepared by diazotizing an amine of the formula HO-D-NH 2  or an equivalent amine containing a metallizable group such as a methoxy group in the ortho-position, coupling with the appropriate 1-amino-8-naphthol sulphonic acid and metallizing, for example with copper carbonate, cobalt sulphate, copper sulphate with or without ammonia or chromium (III) chloride) with an appropriate amino benzene sulphonic acid containing the group X. Specified diazo components are 2 - aminophenol - 4 - sulphonic acid, 6 - chloro-2-aminophenol-4-sulphonic acid, 6 - nitro - 2 - aminophenol-4-sulphonic acid, 3-amino-2-hydroxy- 5 - sulpho - benzoic acid, 3 - amino - 4 - methoxy - toluene-6-sulphonic acid and 2-amino- 1-naphthol-6-sulphonic acid. The dyestuffs are suitable for dyeing leather and natural and synthetic textile materials in various blue shades.
Patent GB-255481-A (GB)
Title: Improvements in or relating to extrusion presses
IPC: B21C35/04
Filed: 1926-07-16
Abstract: 255,481. Krupp Grusonwerk Akt.- Ges., F. July 17, 1925, [Convention date]. Squirting. - Relates to extrusion presses for metal, haing a press 2 and a die 6 arranged loosely within the container 1 so that, during extrusion, the surface metal of the ingot passes outside the die in the form of a thin tubular shell 8 and consists in providing means for automatically clamping the end 7 of the ingot to the abutment 3 so that when this is withdrawn from the container or vice versa, after extrusion, the shell 8 is extracted from the container. For this purpose a dovetail rib or groove 9, 10, tapered transversely, may be farmed in the press head 3, Figs. 5 and 6. When the shell 8 is extracted the rod 5, Fig. 4, and die 6 are also withdrawn from the die support 4 and both shell and rod may be cut off by a saw 12.
Patent GB-313880-A (GB)
Title: Gear train for engine starters
IPC: F02N99/00
Filed: 1929-06-11
Abstract: 313,880. Eclipse Machine Co.., (Assignees of Chilton, R.). June 18, 1928, [Convention date]. Turning -gear.-In an engine starter, a driving pinion on the shaft 12 of a flywheel 11 meshes with laminated pinions on lay shafts 13, each laminated pinion comprising gear discs 20, 21 meshing with the driving pinion and alternating with friction clutch plates 17, 18, 19 splined on the shaft 13, a disc spring 24 acting on the plates being adjustable by means of a nut 25. Pinions 14 on the shafts 13 engage an internal gear 15, which is connected by splines 27 to a jaw clutch 28 movable axially into engagement with a driven clutch 29. In use, the flywheel is set in rotation and the clutch 28 is then engaged with the clutch 29.
Patent GB-745133-A (GB)
Title: Improvements in and relating to washing machines
Inventor: BARNISH PHILIP
IPC: D06F23/04
Filed: 1952-07-16
Abstract: 745,133. Washing-machines. ENGLISH ELECTRIC CO., Ltd. July 10, 1953 [July 16, 1952], No. 17955/52. Class 138 (2). A washing-machine comprises a clothes receptacle 2 mounted within an outer container 1 so as to rotate about a vertical axis, and means for producing a downwardly directed jet of washing liquid which is arranged to act directly on the clothes in the receptacle to cause them to circulate, this jet issuing from a nozzle 10 which is disposed adjacent an upwardly directed projection 12 centrally located within the receptacle and is arranged to direct the jet of washing liquid in a downwardly inclined direction. More than one nozzle 10, may be provided, arranged at an angle as seen in Fig. 3 (not shown) so as to rotate the receptacle 2, and discharging below the normal water level. The receptacle 2 is perforated and provided with vanes 13 which restrict relative movement between the clothes and receptacle. A pump 6 draws liquid from the container 1 through a hose 5 and delivers it through a change-over valve 7 either to a discharge hose 8 or through a hose 9 to the nozzle 10. Alternatively a separate drain pump may be used. The receptacle 2 is rotated for spin drying by an electric motor 4, a separate motor (not shown) being provided for the pump 6. Alternatively a single motor may be used, a clutch being provided between the receptacle 2 and the motor. A cowling 11 prevents clothes catching on the nozzle 10.
Patent GB-313526-A (GB)
Title: Improvements in or relating to flexible roofs for automobile and other vehicles
IPC: B60J7/06
Filed: 1929-06-12
Abstract: 313,526. Heeren, Arturo, Comte de, and Ornellas, T. V. d'. June 13, 1928, [Convention date]. Hoods etc.; bodies.-Flexible roofs for road vehicles adapted to close apertures or intended to act as fixtures comprise a flexible sheet the edges of which are engaged in side grooves the lower edges of which are constituted as jaws to grip the flexible sheet when desired. As shown in Figs. 1 and 2 the flexible roof t with transverse stiffeners l - - l<11> is adapted to be unwound from a roller r to close a roof aperture and the edges of the roof t engage in side grooves comprises parts c, d, e arranged as shown. Jaws m, m<1> are hinged at o to the side edges and when pressed to engage the roof t cause it to assume a dome shape and press its edges against the parts c, e to prevent drumming and exclude weather. Drainage apertures v, v<1> are arranged at the front, sides and rear. The invention is applicable to a flexible roof which is intended to be kept in permanent position the jaws serving the same function as in the removable roof. Various modifications of the side grooves and jaws are described in the Specification.
Patent GB-256766-A (GB)
Title: Improvements in apparatus for playing games of skill
IPC: A63F9/00
Filed: 1925-07-16
Abstract: 256,766. Padgett, G. C. July 16, 1925. Addition to 223,640. Table games.-The electric conductors described in the parent Specification are replaced by a pair of conductors N, P, comprising a central conductor surrounded by an endless outer conductor, the space S between the conductors being adapted to be bridged by a metal disc D. The central conductor may be either square or circular in outline. Specification 230,124 is referred to.
Patent GB-129544-A (GB)
Title: Improved Means for Adjustably Attaching Agricultural Machines or Implements to a Tractor.
Inventor: NICHOLSON ARTHUR CLIVE
IPC: B60D1/46
Filed: 1918-11-06
Abstract: 129,544. Nicholson, A. C. Nov. 6, 1918. Couplings for tractors.-Draw-bar couplings for adjustably attaching agricultural machines or implements to tractors are provided with two independent vertical adjustments, one for setting the height of the hitching link R to suit the height of the tractor draw-bar W from the ground, and the other for setting the height of the framework U of the machine from the ground. A swivelling motion is provided between the draw-bar attachment R and the attachment at the head A of the machine, and by means of the insertion of the pin P to lock the worm L to the tube B the swivelling may be rendered inoperative. A spring plunger F secures the tube B in the desired position by engaging in a hole E in the key C. The bar K passes through the tube B, and is free to rotate in it until locked by the pin P, and has arms L, M secured to it. In a modified construction, the hitching link R and the head A are adjusted vertically by screws.
Patent GB-274110-A (GB)
Title: Improvements in the gasification of fuel
IPC: C10J3/46
Filed: 1927-07-08
Abstract: 274,110. Szikla, G., and Rozinek, A. July 9, 1926, [Convention date]. Addition to 255,857. Producers; coking processes.- In the gasification or distillation of powdered coal in a limited air supply, incandescent fuel dust being added to the fresh fuel dust during circulation in a closed circuit in the gasifying chamber according to the parent Specification, the bottom of the gasifying chamber inclines so closely to the horizontal that coal dust collects on it in the shape of a crater surrounding the air flame. The gasifying chamber 1 has a horizontal bottom 24 supporting powdered coal and the air is admitted by conduit 2 and passes partly through an aperture 8 the size of which is varied by a slide 42 and partly to below a grate 7. Fuel may be admitted from a hopper 29 by a tube 30 the end of which is submerged in the fuel powder which collects in the container 32, so that when the end 33 of the tube is uncovered more fuel is supplied from the tube. The flame 27 is enclosed by fuel dust 28 which is fed into the opening 8 by pokers 25, 26 and the residue, falling out of the gas current, collects in container 32 or in a dust seal 34 from which it is fed by a pusher 36 on to the grate 7. Fuel may, alternately, be supplied by a power-driven conveyer 49. The slide valve 42 may be operated automatically according to the steam pressure of a boiler heated by the gas obtained, this pressure being communicated to a piston 44 operating the valve 42, and interconnected with this valve are means for automatically controlling the action of the pokers 25, 26, 36 and the conveyer 49, so that as the coal consumption increases, the coal supply, the stroke of the pokers, and the width of the opening 8 are increased.