baber/WOPTO huggingface dataset:
Patent GB-622711-A (GB)
Title: Improvements in or relating to circuits for the modulation of electrical oscillations
IPC: H01F27/33
Filed: 1947-03-06
Abstract: 622,711. Modulating systems. PHILIPS LAMPS, Ltd. March 6, 1947, No. 6343. Convention date, March 29, 1944. [Class 40 (v)] In a modulator circuit comprising a double push-pull connection of rectifiers, at least one of the leads connecting the carrier wave source to the electrical centres of each of the two pushpull connections, comprises an. impedance. In the Figure, carrier-wave oscillations from a source ep are applied to the double push-pull circuit consisting of rectifiers A1, A2, and B1, B2, and modulating oscillations are supplied from source eq. The normal operation of this circuit requires that when for example, due to the carrier input, current is passing through rectifiers A1, A2, rectifiers B1 and B2 shall remain blocked, but if the modulating voltage is sufficiently great, rectifiers B1 and B2 may also conduct and result in an opposing current in transformer T2, thereby reducing the modulated output in load RS. The insertion of resistance RA effectively controls this effect, by controlling the potential developed across rectifiers A1, A2, when these are conducting, which acts as the blocking potential across rectifiers B1 and B2. Similarly resistance RB controls the blocking voltage on rectifiers A1, A2, when B1 and B2 are conducting. The limiting effect in this type of modulator may thus be controlled by means of resistances RA and RB. A modification is described, in which the two primary windings of transformer T2 are replaced by a single winding.
Patent GB-575790-A (GB)
Title: Improvements in yarn winding machines
IPC: B65H54/28
Filed: 1944-04-05
Abstract: 575,790. Winding yarn. RUSHTON, G. W. April 5, 1944, No. 6364. [Class 120 (ii)] In a drum-winding machine, the traverse cam D is so mounted that it is capable of longitudinal axial movements and is connected to a second cam E which moves longitudinally in unison therewith, the cam E having a cam track e engaged by a fixed abutment bl and formed with two rises e<1>, e<2> so that as the traverse bar A is approaching either end of its traverse, the traverse cam D is given a longitudinal movement so to wind the yarn on to the cheese at a greater pitch angle and produce a cheese coned at both ends. The cams D, E may be fixed to the shaft C, which slides in its bearings, and they may be carried by a sleeve slidable along the shaft C and rotatable therewith.
Patent GB-397564-A (GB)
Title: Improvements relating to banjos, banjo-mandolines and like instruments
IPC: G10D1/10
Filed: 1932-03-03
Abstract: 397,564. Banjoes &c. HOUGHTON, A. G. and HOUGHTON, J. H., (trading as HOUGHTON & SONS, G.), 75, Heaton Street, Hockley, Birmingham. March 3; 1932, No. 6410. [Class 88 (ii).] A banjo &c. having a wooden soundbox 5 with closed back, has the vellum 8 and its holding means located within the upper portion of the sound box and forming a closure therefor, with soundholes 5b in the wall of the box preferably near the neck. The vellum is held on a ring 7 by a tightening ring 9 and bolts 10 some of which engage in holes 6a in supports 6 in the box.
Patent GB-1414602-A (GB)
Title: Plastic refractory compositions
IPC: C04B20/12
Filed: 1974-02-12
Abstract: 1414602 Plastic refractory compositions KAISER ALUMINUM & CHEMICAL CORP 12 Feb 1974 [7 March 1973] 06410/74 Heading C1J A plastic refractory composition, containing at least 20% MgO based on the dry weight, comprises by wt. of the composition including water, (1) 84-94% of prereacted mixtures of periclase and chrome ore containing 20-80 wt. per cent MgO of chrome ore or of mixtures thereof; (2) 0-10% MgO in uncombined form; (3) 0À1-1% on the B 2 O 3  basis of a watersoluble boron compound; (4) 0À1-0À5% of a water-retention agent; (5) 1-5% of sodium silicate and (6) 4-8% of water. The composition may be prepared by mixing components (1), (2), (3) and (4), adding (6) and mixing to obtain stiff plastic consistency and finally adding in and mixing in (5). The uncombined MgO may be periclane or may be present as dead burnt dolomite. The boron compound may be sodium borate or boric acid. The water retention agent may be methyl cellulose. Particle size details of ingredients (1) to (5) are given.
Patent GB-221433-A (GB)
Title: Improvements in or relating to lock nuts
IPC: F16B39/12
Filed: 1924-03-13
Abstract: 221,433. Walton, T. O. March 13, 1924. Locking nuts.-A nut locking device of the type in which a spring-pressed pin &c. is mounted in a recess in the nut parallel to the axis of the bolt, to engage in any one of a series of radial or other recesses in the work or in the face of another nut, and in which means are provided for operating the pin &c., comprises a pair of nuts 1, 2 and a spring-pressed locking pin 3 which is operated by a lever 6 pivoted intermediate its ends to the pin so that one end 7 acts as a fulcrum when the lever is raised to withdraw the pin to the unlocked position, and bears on the face of the nut to maintain the pin in this position. In the locked position the lever 6 lies flat against the face of the nut as shown in the Figure. A recess is provided in the face of the nut 2 to accommodate the lever, and radial recesses 9 are provided in the face of the nut 1 in which the locking pin 3 engages.
Patent GB-1240544-A (GB)
Title: Dynamo electric machines
Inventor: HUNT JOHN WILLIAM ARCHIBALD
IPC: H02K1/27
Filed: 1968-02-09
Abstract: 1,240,544. Making rotors; welding by pressure. JOSEPH LUCAS (INDUSTRIES) Ltd. 29 Jan., 1969 [9 Feb., 1968], No, 6463/68. Headings B3A and B3R. [Also in Division H2] A method of making a permanent magnet rotor for a dynamo-electric machine includes positioning a plurality of permanent magnets 16 between a central polygonal core 17 and an outer pole assembly 11 so that the magnets are in contact with both the pole assembly and the core, deforming at least one axial end of the core to prevent relative axial movement between the core and the magnets and removing portions 15 of the pole assembly to separate the poles. The pole assembly 11 is built up from a plurality of mild steel laminations held together by welding or rivets and the magnets 16 engage in axial channels 13 in the pole assembly. The core 17 is of mild steel and it is formed with a circular groove (19) in each end face. The outer wall (21) of the groove is heated by a pair of electrodes and the electrodes are moved towards one another to deform the outer wall and weld it to the magnets, Fig. 2 (not shown). The assembly is then placed in a mould, which is then filled with molten aluminium and finally the portions 15 are removed as the assembly is machined to cylindrical form, thereby separating the poles.
Patent GB-706116-A (GB)
Title: An improved tool for forming a bell-mouth at the end of a pipe
Inventor: GLICK DAVID
IPC: B21D41/02
Filed: 1951-03-19
Abstract: 706,116. Tube expanders. BRITISH INSULATED CALLENDER'S CABLES, Ltd. March 18, 1952 [March 19, 1951], No. 6518/51. Class 83 (4) A tool for flaring the end of a pipe, particularly an aluminium pipe 1 forming the sheath of a pressurized cable 2, comprises a stop ring 3. a clamp ring 5 and a flaring ring 8, the three rings being coupled by tie-rods 4 with the clamp ring fixed to the rods at a predetermined distance from the stop ring. Initial tightening of the nuts 9 on the tie-rods draws the clamp ring 5 over a split bevelled collet 6 and closes it on the pipe, until the small end of the collet meets the stop ring 3, and further tightening of the nuts causes the flaring ring 8 to move an annular flaring tool 7 into the end of the pipe. The inner surfaces of the collet sections are serrated (for example, screw-threaded) and, to enable removal after the flaring operation, the stop ring 3 is in two halves secured together by a screw 10.
Patent GB-339892-A (GB)
Title: Cock
IPC: F16K5/04
Filed: 1930-02-28
Abstract: 339,892. Maciejewslcf, F. H. March 4, 1929, [Convention date]. Rotary cylindrical valves ; siiding valves.-A rotary cylindrical or sliding plate valve operating in an elastic lining, such as cork under compression, is characterized in that the elastic material e is initially of greater volume than, but is forcibly compressed into, the space in the casing a, thereby obtaining a lateral compression of the packing apart from adjustable compression members. The packing material is finally compressed and closed in by discs g<1> which are originally curved outwards but are pressed flat, as shown, with the peripheries engaging undercut grooves in the casing a. In place of one of the discs, the casing itself may be closed in at one end.
Patent GB-888297-A (GB)
Title: Method for removing arsenic from arsenopyrite ores
IPC: C22B1/02
Filed: 1958-03-03
Abstract: <PICT:0888297/III/1> Arsenic-containing pyrites is freed from arsenic by roasting it in a fluidised bed at above 800 DEG C. in an oxygen deficient atmosphere, such that an arsenic-free calcine, containing at least 2% iron sulphide, is obtained.  Volatilized sulphur and arsenic compounds together with fine solids are entrained in the flue gases, which are passed to a dust separator maintained at above the condensation temperature of the arsenic compounds and preferably above 650 DEG C.  The dust-free gases so obtained are passed to a combustion chamber in which in the presence of excess oxygen, all the arsenic is converted to non volatile compounds, which are separated by scrubbing or electrostatic precipitation to give a gas stream containing arsenic free sulphur dioxide.  The calcine may be subjected to a second roasting operation wherein the calcine is fully oxidised.  The flue gases from which are passed to a second dust separator, the so obtained fine solids being recovered, and the dust-free gases are passed to the combustion chamber.  The second roasting stage is preferably carried out at about 650 DEG C., to convert non-ferrous metals to sulphates, which may be leached out. In the Figure, the pyrites is roasted in the first stage 32, the flue gases freed from dust in 9 and burnt in 25, and the dust and calcine pass to second stage 33 via line 11. The flue gases therefrom are freed from dust in 20, the gas passed to 25, and the solids blended with the final calcine and collected in 29.  Specification 721,402 is referred to.
Patent GB-662469-A (GB)
Title: Improvements in change-speed gears
IPC: F16H3/00
Filed: 1949-03-11
Abstract: 662,469. Variable-speed gearing. CLARK, R. March 10, 1950 [March 11, 1949], No. 6752/49. Class 80 (ii) [Also in Group XXX] A two-speed gear particularly applicable to winches is adapted to provide a drive at different ratios in the same direction for reverse rotation of the driving member manually or by a source of power. A high speed ratio from the driving shaft 16 to a winch drum 1 is obtained through a ratchet wheel 20, pawl 19, gear 14 and internal gear 18. A low speed drive is obtained on reversing the rotation of shaft 16 through a gear 15 fixed thereon, gear 21, pawl 24, ratchet wheel 25 and a gear 22 also engaging the internal gear 18, the high speed ratchet pawl 19 over-running. In the high speed drive the low speed pawl 24 over-runs. The gears and the drum 1 are mounted for rotation on a fixed base 2 and a housing 5 secured thereto.
Patent GB-765152-A (GB)
Title: Improvements relating to motor vehicles
IPC: B62D25/08
Filed: 1955-03-08
Abstract: 765,152. Vehicle bodies. DAIMLER-BENZ AKT.-GES. March 8, 1955 [March 8, 1954], No. 6801/55. Class 108(1). A vehicle body is divided along a horizontal plane to provide upper and lower portions 4 and 5 which do not extend to the ends of the vehicle, but are secured to an end cap 1. The upper part of the vehicle may have one, two or three sections and the lower part may be in one piece or two pieces spaced apart or abutting. Specifications 717,951, 719,770 and German Specification 867,201 are referred to.
Patent GB-102683-A (GB)
Title: Improvements in Tobacco Stemming and Booking Machines.
Inventor: MCCLOSKEY JOHN THOMAS
IPC: A24B5/04
Filed: 1916-05-15
Abstract: 102,683. McCloskey, J. T. May 15, 1916. Stripping and booking machines.-The tobacco leaf is spread by hand on a table 4 which is divided longitudinally to receive a cutting-block 77, Fig. 5, or two cutting-knives 11, Fig. 2, between which the stem is placed. The leaf is held, during the spreading operation, by clamping-fingers 12 controlled by a treadle (not shown). The spread leaf is held by booking-clamps 23 pivoted at the sides of the table and controlled by a treadle 28. Both clamps are held by a spring- pressed rod 50 engaging a fixed bar 51, and are released by the cam 54 after operation of the cutting-mechanism. The cutting-mechanism comprises two rotary cutters 76 movable over a cutting-block 77 or a roller 30 movable over a pair of fixed knives 11 by means of a rack 40 driven from a wheel 41, which is moved by a rack 45 engaging a pinion 44 ; the rack 45 is reciprocated by a crank 47 on the shaft 48. The table 4 is supported on springs 7 and is gradually lowered, as the leaves are piled upon it, by a ratchet disk 59 on a shaft 57 carrying a. crank which is linked to the table. The ratchet 59 is driven by a pawl 60 on a lever 58, which is depressed, either by a pin on a gearwheel 64 driven from the shaft 48, or by hand. It is raised by hand, a catch-handle 71 being provided for releasing the driving-pawl 60 and a detent pawl 67. The table may also be raised and lowered by a lever 58 secured to the shaft 57.
Patent GB-963490-A (GB)
Title: Improvements in or relating to solid propellent grains
IPC: F02K9/10
Filed: 1961-02-27
Abstract: 963,490. Rocket motors. ATLANTIC RESEARCH CORPORATION. Feb. 27, 1961 [March 4, 1960], No. 7029/61. Heading F3A. An end-burning solid propellant grain 6 has an inhibitor coating 7 comprising a cured mixture of an epoxy resin, preferably an aromatic epoxy resin, and a polyamide curing agent containing reactive amino groups. The inhibitor is formed by spraying or brushing a mixture of liquid epoxy resin and a liquid polyamide on to the grain, or by dipping the grain into the mixture, and curing at or above room temperature. Preferred ratios by weight of the mixture are 50: 50, 70: 30 and the grain used is preferably one containing an organic polymer component. The inhibitor may be reinforced by one or more porous sheets of an organic polymeric material such as nylon, cotton or rayon. The sheet is preferably in the form of a woven fabric, but may be a sheet suitably perforated, and is impregnated with the liquid epoxy polymer, various methods of impregnation being described. The porous sheet may be pre-cut to the size of the grain surface to be inhibited or may be applied in the form of one or more strips wound on to the grain in any desired manner. In Fig. 2, two layers 8 of porous sheet are shown. The inhibitor coating 7 may also provide extra strength at the front motor wall 11. In Fig. 1 the wall is provided with a flange 12 and in addition to the normal bonding of face 10 of the grain to the wall 11 the coating 7 is circumferentially bonded to the flange 12. This may be accomplished by inserting the grain within the flange before curing the epoxy resin. An alternative front motor wall attachment is described wherein the coating extends beyond the front face of the grain and is circumferentially bonded to a disc secured to the wall. Further embodiments are described which concern grains of various configurations of burning surface and tables are given showing the effects of temperature change and the tensile strengths of inhibitors made according to the invention.
Patent GB-122757-A (GB)
Title: Hack-Saw Machines.
Inventor: WARDMAN HALLOCK
IPC: B23D49/00
Filed: 1918-04-26
Abstract: 122,757. Wardman, H. April 26, 1918. Reciprocating-saw machines. - A device for raising the blades of hack-saw machines from the work during the idle stroke comprises a quadrant arm 20 secured to the arm 8 upon which the saw frame slides and which is pivoted upon the driving-shaft 6, a lever 16 pivoted to a bracket 17 and adapted to be raised during the idle of the saw by an eccentric 15, a forked block 25 straddling the arm 20 and freely suspended from the lever 16 by a link 27, and two members or pins 28 secured in the block 25, one on each side of the arm 20. When the lever 16 is raised, the pins 28 grip the arm 20 and raise the saw through a distance which is regulated by adjusting a stop 2 that supports the block 25 in a substantially horizontal position during the cutting stroke, the arm 20 being then free. The block 25 is pulled downwards by a spring 24.
Patent GB-116694-A (GB)
Title: Improvements in or relating to Processes for Treating Cocoa and the Waste Products of Chocolate Manufacture.
Inventor: GROUSSEAU EDOUARD DE
IPC: C07D473/10
Filed: 1918-04-27
Abstract: 116,694. Grousseau, E. de, and Vicongne, A. June 11, 1917, [Convention date]. Fats, extracting.-Cocoa fat, theobromine, and caffeine are extracted from cocoa or cocoa waste by means of a single solvent such as tetrachlorethane or trichlorethylene, and subsequently separated. Fig. 1 shows apparatus for effecting the extraction. The cocoa or cocoa waste, which has been previously treated with acid to liberate the theobromine and caffeine, neutralized with a carbonate of an alkali or alkaline earth, and dried, is placed in a perforated vessel 1 arranged within a chamber 5 above the evaporating chamber 2. The solvent is then introduced into the chamber 5 until this is full, when it is discharged into the chamber 2 by a siphon 7. The vapour from the chamber 2 passes by a pipe 10 to a condensing- coil 14 and thence to a reservoir 15, when the condensed liquid returns to the chamber 5 through a pipe 16. A modification, suitable for use with solvents with a high boiling point, is described. The residues remaining in the chamber 2 are run off while hot and treated with carbon tetrachloride or benzine to extract the fat and caffeine, and the theobromine separated by filtration. The carbon tetrachloride is then distilled off and the caffeine extracted with hot water, leaving the fat.
Patent GB-235645-A (GB)
Title: Improvements in or relating to valve gear for internal combustion engines of the double acting type
IPC: F01L13/02
Filed: 1924-03-20
Abstract: 235,645. Zulver, C. March 20, 1924. Reversing. - In a double - acting Diesel or other engine in which the upper and lower valves are worked from one cam shaft c and the shaft or the cams d are displaced axially for reversing, the cam shaft is mounted near the bottom of the cylinder and each cam worlds a valve in the lower cylinder cover directly by means of levers b and works an upper lever a through a push rod f. When reversing, the rods f and levers b are moved away from the cams by means of a bell,-crank i connected by rods j &c. to a. controlling-handle. The adjustment of the cams d may be effected by hand or by a small airdriven piston, the movement being cushioned by a dashpot or an oil cylinder. The invention may be applied to an engine fitted with combined fuel, air, and exhaust valves, as described in Specification 230,644, [Class 7 (vi), Internal-combustion engines, Valves &c. for], the air induction pipe and exhaust pipe being alternately connected to the combined valve by an auxiliary rotary or other valve, driven or worked from the cam shaft or the main valve fevers.
Patent GB-498578-A (GB)
Title: Food dispensers
IPC: A47G19/18
Filed: 1938-03-08
Abstract: 498,578. Delivering measured quantities. BOEHMER, J. M. March 8, 1938, No. 7203. [Class 102 (i)] Apparatus for dispensing mayonnaise &c. comprises a glass container 4, which is screwed into the enlarged end 3 of a cylinder or mounted on a baseplate 1. Mayonnaise is discharged from the cylinder 2 through a spout 6 by depressing a rod 17 carrying the bucket 23. The return stroke is effected by a spring 15. The bucket is provided with a valve 28, sliding on an extension of the rod 17 against the action of a spring 29. The stroke is limited by means of an adjustable arm 21 on the rod 17, which is adapted to engage one of several adjustable stops 19.
Patent GB-1486676-A (GB)
Title: Disposable water-absorbent articles
IPC: A61L15/20
Filed: 1975-02-20
Abstract: 1486676 Disposable water-absorbent articles ROUSSEL UCLAF 20 Feb 1975 [20 Feb 1974] 7234/75 Heading ASR [Also in Division B5] Disposable water-absorbent articles for use as nappies, absorbent pads, particularly but not exclusively for babies, comprise a waterpermeable, flexible, non-woven envelope containing a water-absorbent inner portion which comprises a water absorbent support material treated, at least in part with (a) a cross-linked copolymer of an α, #-unsaturated carboxylic acid on an acetal of formula: in which n is 0, 1 or 2 and (b) an alkaline material. In one embodiment the absorbent support material comprises shredded cellulose pulp to which a mixture of cross-linked copolymer and alkaline material are added in powdered form and in an alternative embodiment the support material comprises one or more cellulose sheet layers, at least one of which is treated with a mixture when the copolymer contacts an aqueous liquid it forms an acaidic gel, neutralised by the alkaline material, which is highly absorbent so the surface of the articles which contacts the wearer's skin is kept dry. Examples are given of the position and the composition of the cellulose sheet(s) in the construction of the absorbent support materials. The treatment of the support material is effected by spraying, sprinkling or soaking. The cross-linked copolymer is viscaron A-600-1 (R.T.M.) and the alkaline material is e.g. sodium bicarbonate, potassium bicarbonate, magnesium carbonate.
Patent GB-820519-A (GB)
Title: Improvements in proximity fuzes
IPC: F42C13/02
Filed: 1957-03-05
Abstract: 820,519. Proximityfuzes. BRINRO Ltd. March 5, 1957 [March 12; 1956], No. 7303/57. Class 9(1) [Also in Group XL(b)] A proximity fuze comprises a casing 1 containing an annular window 2' through which infra-red radiation from a target passes to fall on a frusto-conical mirror 4, whence it is reflected to a concave mirror 5 to fall upon a photo-cell 7 which activates the fuze via an amplifier 8. More than one cell may be provided to correspond to different directions of origin of the radiation. The detonating distance may be controlled by providing the amplifier with a high pass or band pass filter to limit the duration of the impulses received.
Patent GB-556500-A (GB)
Title: Improvements in or relating to dish washing machines
IPC: A47L15/33
Filed: 1942-06-01
Abstract: 556,500. Washing machines. BAIRD, J. O. June 1, 1942, No. 7405. [Class 138 (ii)] [Also in Group XXIII] In an apparatus for washing plates &c. which may be combined with, or converted into, an apparatus for washing clothes the plates are inserted into vertical chordal compartments 13b of a cage 13 and cups into diametrical compartments 13a, the cage being secured to the square upper end of a shaft 10 which is driven from an electric motor 3 preferably so as to be oscillated by reduction gearing 4 mounted on a bracket 5 rigid with the motor casing. A crank-pin 6 driven by the gearing 4 drives by a pitman 7 a crank-pin 8 of greater throw on the shaft 10. U-section vanes 15 may be secured to the partition members of the cage 13 to direct the cleansing liquid on to the cups. For washing clothes the cage 13 may be replaced by an agitator 12 of usual form, such as is shown in Fig. 7 in a combined apparatus having two tanks 17, 18 in one at which is secured a cage 13 for receiving plates &c. and the other of which is fitted the agitator 12 for washing clothes. The crank-pins for oscillating the two members are connected by a rod 21, and the agitator 12 may be driven faster than the cage 13. In a further modification in which an agitator 12 is oscillated in a single compartment, the cage 13 may be constructed so as to fit over the agitator and it is so fitted when plates &c. are being washed.