baber/WOPTO huggingface dataset:
Patent GB-166951-A (GB)
Title: Improvements in and relating to electro-magnets
IPC: H01F7/20
Filed: 1920-04-22
Abstract: 166,951. Neale, J. April 22, 1920. Electromagnets.-The coils D of a lifting-magnet are located in concentric channels C in the face of the magnet iron which is thus divided up into a series of pole-faces so designed that the width of the pole-faces is equal to the thickness of the load B to 'be raised. The magnet is provided with passages E through which cooling gas or liquid is caused to circulate; this circulation may be due to the natural ascent of the heated air or water, or air or liquid may be forced through the passages. Radial gaps F and concentric grooves H establish communication between the passages E. The circulating liquid may be cooled in a tank or radiator; the magnet may be enclosed in a casing F<1> which is connected by a pipe G to a suction fan (not shown).
Patent GB-473530-A (GB)
Title: Improved rectifier comprising an ionic rectifying tube having an incandescent cathode
IPC: H01J17/14
Filed: 1937-04-19
Abstract: 473,530. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. April 19, 1937, No. 11170. Convention date, April 21, 1936. [Class 39 (i)] In an ionic rectifying tube 3 having an incandescent cathode 1, the discharge path between the cathode and anode or anodes is arranged in a magnetic field, the lines of force of which connect the cathode and anodes. This enables pressures of less than 0À01 mm. of mercury to be employed in the tube to minimize the risk of back ignition without appreciably decreasing its life. In the full-wave rectifier shown, the anodes 2 are made of magnetic material and the magnetic field is produced by a permanent magnet 5 outside the tube, with its poles adjacent the anodes. A non-magnetic screen 7 prevents direct discharge from the cathode to the anodes. The magnetic field may also be produced by an alternating current in synchronism with the current to be rectified, or by a current pulsating in synchronism with the anode currents, so that the field at each anode disappears during the nonconducting phase of the anode. The tube is preferably filled with mercury vapour obtained from a supply of mercury in a cooled attachment of the tube. The required low pressure may be secured by keeping the mercury supply at a temperature at which its vapour pressure corresponds to the pressure desired in the tube.
Patent GB-232047-A (GB)
Title: Improvements in or relating to headstocks for bicycles, tricycles and like velocipedes, and to a method of manufacturing the same
IPC: B62K19/30
Filed: 1924-05-07
Abstract: 232,047. Deakin, E. G. May 7, 1924. No Patent granted (Sealing fee not paid). Heads for bicycles, tricycles, children's velocipedes, &c. are formed from a. sheet-metal blank, Fig. 1, bent so as to form two or more sockets 8, 9, Fig. 2, united by a web 10, the parts forming the web being welded together. The socket 8 is for the reception of the downwardly-extending tube of the frame, and if the frame comprises also an upper tube, a further socket is formed at the upper end of the socket 9 by the use of a blank built up of two symmetrical figures similar to that shown in Fig. 1, united along the edge 12. The head may be formed of two blanks, each similar to half the blank shown in Fig. 1.
Patent GB-224464-A (GB)
Title: Improvements in and relating to rotary brushes
IPC: A46B13/00
Filed: 1924-05-07
Abstract: 224,464. Nielsen, L. H. May 7, 1924. Bristles, fixing; stocks.-A rotary brush comprises a number of bristle-rings arranged side by side on a hub or shaft, each bristle-ring comprising a bristle-element held between two plates @ which are dished at their central portions to form a pocket for the element and are formed with stamped-up projections d for engagement with the bristles a. The bristle-element consists of a number of wires b which are twisted together to secure the bristles a and are bent to circular form. The plates c may be clamped together by rivets e or they may be formed with open-ended radial slots whereby they can be detachably held together by means of double-headed buttons.
Patent GB-659509-A (GB)
Title: Improvements relating to continuous self-baking electrodes
IPC: C25C3/12
Filed: 1949-04-28
Abstract: 659,509. Electrode furnaces. ELEKTROKEMISK AKTIESELSKABET, April 28, 1949, No. 11271. Convention date, May 8. 1948. [Class 39(iii)] In an electric furnace of the continuous self - baking electrode type having a permanent casing 8 surrounding the fluid part 5 of the electrode, the perma. nent casing extends over a portion of the dried part 6, but not the baked part 7, of the electrode. The lower portion of the electrode is shielded from the atmosphere by a gas-tight hood 11 extending between the permanent casing 8 and either the side walls 1 of the furnace or the crust on the surface of the bath. Furnace gas is led away through pipes 12 and the hood 11 may have a gas-tight lid 14. The casing is also at such a distance from the furnace bath that the casing does not reach a temperature higher than 400C.
Patent GB-611251-A (GB)
Title: Improvements in or relating to electric couplings
IPC: H01R13/434
Filed: 1946-04-12
Abstract: 611,251. Two-part couplings. GENERAL ELECTRIC CO., Ltd., and HARRISON, W. April 12, 1946, Nos. 11325 and 34095. [Class 38 (i)] The contact elements of a plug or socket are held in position by means of a tapered split spring sleeve slipped over and engaging a rim or recess on the contact, and also engaging with a flange on the body or the end of the body. A holder for fluorescent tubes has a body 1, Fig. 1, in which resilient sockets 2 are housed in cylindrical bores 8. The sockets are retained in position by the enlarged head and terminal 5 abutting against one face of the body 1 whilst a spring steel split sleeve of frusto-conical shape 17 bears against a shoulder 9 at one end of the bore 8, and against an annular rim on the free end of the socket element. In another embodiment, applied to a plug (Fig. 6, not shown), each pin of the plug is secured in the body by an enlarged terminal head held in abutment against one face of the body, by a split spring steel sleeve bearing against the other face of the body and against a shoulder formed by an annular recess in the pin. In both embodiments, the terminal heads 5 have a flat on one side to engage a barrier 6 to prevent rotation.
Patent GB-560781-A (GB)
Title: Improvements in the production of gear tooth and like profiles by a grinding operation
IPC: B23F23/08
Filed: 1942-08-14
Abstract: 560,781. Gear-cutting. COVENTRY GAUGE & TOOL CO., Ltd., and JELLIS, M. Aug. 14, 1942, No. 11378. [Class 83 (iii)] In grinding gear teeth by means of an abrasive hob 2 rotating in unison with the work 3 the work has an additional movement axially of the hob to distribute wear, compensating rotary movement being also imparted to the work, the axial and compensating movements being effected by means independent of the normal drive of the hob and work. In Fig. 1 the grinding hob spindle driven by a belt 7 or electric motor is connected through change gearing 12 to a shaft 17 carrying a splined worm 16 having bearings in a slide 21 which may be reciprocated by crank and connecting rod 26, 27 operated from a pulley 28 or by a motor. The worm 16 engages a worm wheel 18 on a spindle 19 connected by worm gearing 14, 15 to the work spindle 9. The latter is mounted in a head 10 slidable in a member 11. The head 10 may be moved to traverse the work axially of the hob by a point 23 engaging an adjustable sine-bar 24 on the slide 21, corresponding rotary movement being imparted to the work by the worm 16 moving over its worm wheel 18. In a modification, Fig. 3, the shaft 17 is connected through bevel gears 30 to a worm 16 engaging a worm wheel 18 on a spindle mounted in the sliding head 10, this spindle being connected through auxiliary change gears 34 to the spindle 19 driving the work. In this case the slide 10 is reciprocated by the crank 26 thus rolling the worm wheel on its worm to modify the work rotation in accordance with the traversing movement. 'The grinding wheel may be made as described in Specification 527,654 or 557,946, [both in Group XXIII], and the wheel head may be adjustable for helix angle. The wheel may be driven at reduced speed for dressing purposes. Means (not shown) may be provided for imparting axial feed to the work by a train from the gears 12. A depth of cut feed may also be provided.
Patent GB-1043664-A (GB)
Title: Polymerisation catalysts
IPC: C07F9/54
Filed: 1965-03-17
Abstract: The invention comprises compounds of the general formula (R4P)2S2O8 in which each group R which may be the same or different is a monovalent hydrocarbon radical.  The groups R may be alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, alkaryl, or aralkyl radicals, but are preferably non-aromatic, particularly alkyl, groups of less than 12 carbon atoms.  A preferred compound is bis-(tetra-n-butylphosphonium) persulphate. They may be obtained by mixing in a common solvent, usually with heating, a compound R4POH, with ammonium persulphate. The compounds are used as catalysts in the preparation of polymers from unsaturated compounds.ALSO:A process for polymerizing organic compounds through ethylenic unsaturation is improved by the employment as polymerization catalyst of 0-01-10% by weight based on the monomer of phosphonium persulphates of the general formula (R4P)2S2O8, where the groups R are monovalent hydrocarbon radicals which may be the same or different (see Division C2).  The groups R are preferably non-aromatic radicals having 12 or fewer carbon atoms, and alkyl radicals are particularly preferred.  In an example, vinyl acetate is polymerized at 65 DEG  C. and acrylonitrile at 50 DEG  C. in the presence of bis-(tetra-n-butylphosphonium) persulphate as catalyst.
Patent GB-1147325-A (GB)
Title: Improvements in or relating to automatic record changers
Inventor: FORTUNE HENRY JAMES
IPC: G11B17/14
Filed: 1966-03-15
Abstract: 1,147,325. Record changers. GARRARD ENG. Ltd. 3 March, 1967 [15 March, 1966], No. 11396/66. Heading G5R. An automatic record changer has a shouldered centre spindle 1 with a pawl 2 arranged longitudinally of the spindle structure and pivotally mounted thereto to cause lateral displacement of a record from the shoulder of the spindle on to the turntable in response to lateral movement of the end of the pawl 2 that is remote from the shoulder. Pawl 2 also serves to sense the presence of a further record on the shoulder and is effective in bringing about the switching off of the turntable drive when the last record has been played. As shown, pawl 2 is actuated by a longitudinally displaceable operating lever 3 which is spring biased and arranged to be displaced in response to the anti-clockwise rotation of a cam 7 coupled to the turntable. A pin 10 secured to a cam lever 9 follows an elliptical groove 14 in cam 7 and thus causes a second pin 11 on lever 9 to abut the right hand edge of a slot 12 in lever 3 to actuate the latter to release the lowermost record. When cam 7 is rotated further a pin 5 on lever 3 comes into contact with a cam 6 having a detent 15 which causes lever 3 to move in the opposite direction until pawl 2 abuts against the edge of the centre hole in a further record. If there is no further record on the spindle the movement of pawl 2 and hence lever 3 is not limited. The lever 3 continues to move until it actuates a switch lever 17 to condition a switching means for operation in response to the outward travel of the pick-up arm. The outer edges of the records may be supported by a structure 24, Fig. 2, which is adjustable to cater for records of different diameters. Alternatively, Fig. 3 (not shown), the records are clamped between an edge support (31) and the detent of a spring-urged latch (32).
Patent GB-413828-A (GB)
Title: Process for the absorption and recovery of oxides of nitrogen
IPC: C01B21/26
Filed: 1933-04-19
Abstract: A process for absorbing and recovering residual oxides of nitrogen from gases derived from the oxidation of nitrogen or its compounds, particularly ammonia, comprises freeing said gases, left after absorption in water, from acid droplets and water mist, for example by filtration, and then treating in two stages with sulphuric acid, first with acid of 50--70 per cent or above 82 per cent H2SO4 so that water is practically completely removed, and then with 75-82 per cent acid to absorb the nitrogen oxides.  The nitrosyl acid formed is denitrated by indirect heating and sulphuric acid obtained in the same concentration as used for the absorption.  When acid of above 82 per cent is used for drying it can be transferred to the absorption stage when its concentration falls below 82 per cent.  When using very dilute gases, nitric acid may be added prior to the drying with sulphuric acid.  Steam evolved during the oxidation of ammonia may be used for heating the columnar or other apparatus in which denitration is effected.  This operation may be carried out in vacuo at temperatures of 120--150 DEG  C., and accelerated by adding nitrio acid.  Specification 6366/08, [Class 1], is referred to.  The Specification as open to inspection under Sect. 91 states that the nitrous gases from the absorption tower for nitrio acid of 50 per cent or more concentration can be absorbed directly in sulphuric acid without pre-drying.  This subject-matter does not appear in the Specification as accepted.
Patent GB-114778-A (GB)
IPC: F16H33/10
Abstract: 114,778. Texier, U. Nov. 2, 1917. Variable-speed epicyclic gearing; differential or balance gearing.-An epicyclic gear, intended to form a variable-speed gear in which the speed varies automatically with the load, and to be used in a modified arrangement as a differential or balance gear, comprises a driving-casing c carrying planet pinions i gearing with a wheel e, keyed to the driven shaft b, and with a loose wheel f, which gears with planet-pinions g gearing with a wheel d keyed to the shaft b. A fly-wheel l is attached to the second planet-carrier. When used as a differential gear, the wheel d is secured to the second driven shaft.
Patent GB-559918-A (GB)
Title: Method and means for assembling tubular rivets and the like
IPC: B21J15/34
Filed: 1942-08-18
Abstract: 559,918. Feeding rivets to bundling apparatus. FRENCH. G. W., and BEASLEY, FRENCH & CO., Ltd. Aug. 18, 1942, No. 11562. [Class 117] [Also in Group XVII] Tubular rivets 1, preferably flanged at one end 2, are assembled end to end and held together to form a stick or tubular column, by threading them on a rod 3 which dips into a mass of the rivets contained in a smooth faced inclined rotating bowl 4 having an overhanging edge. The rivets may be secured together before removal from the rod by a friable adhesive such as solder, liquid metal, cellulose solution, enamel &c. Alternatively, the rod 3 and the assembled rivets may be secured between two clamping plates lined with a layer of soft material such as rubber or felt, and the rod 3 replaced by a suitable holding mandrel.
Patent GB-804628-A (GB)
Title: Precision step voltage generator
IPC: H03K6/00
Filed: 1957-04-09
Abstract: 804,628. Staircase waveform generators. COLLINS RADIO CO. April 9, 1957 [Sept. 25, 1956], No. 11590/57. Class 40 (6). Fig. 4 shows a staircase waveform generator in which a D.C. voltage of + 100 volts is applied across the network RO, RN, RK and diodes 21 ... 24, 31 ... 34, so that when switches S1 ... S4 are operated according to the time sequence shown in Figs. 2A ... 2D a step waveform as shown in Fig. 5 is generated across resistor RO. A fixed D.C. voltage ER, for example of + 50 volts, is maintained constant by neon 43 and applied between the grid and cathode of cathode follower stages V2, V1 respectively. The voltage ER is thus applied between leads 10 and 11 so that the leads increase in voltage in stepwise pattern the potential of lead 10 being always + 50 volts higher than that of lead 11, the stages V1, V2 being operated at substantially unity gain. When any switch S1 ... S4 is moved from the position shown its respective diodes 21 ... 24, 31 ... 34 are biased to a conducting condition the values of voltage divider resistors RK, RN are chosen so that when all switches are ungrounded the positive voltage provided by the dividers always exceeds the voltage EC from tube V2 so that the diodes always conduct when their respective switches are ungrounded. It is shown that the output voltage EO is equal to Since EO and ER are constant the output voltage is controlled by the values of resistors RN so that to provide the correct current relationship for equal incremental steps of the output voltage EO the value of resistors RN are selected so that any two adjacent resistors have values with a 2: 1 ratio. A decade number of steps in the output voltage may be obtained with four resistors RN by causing the switches to reset to zero after the ninth step. Other switching sequences than the binary ones shown in Figs. 2a, 2d may be used. In the modification shown in Fig. 6 the switches S1 ... S4 are provided by bi-stable trigger circuits 61 ... 64 which are interconnected so as to switch their outputs between the value B + and C -, the trigger circuits are controlled from pulse generator stage 60.
Patent GB-946769-A (GB)
Title: Improvements in or relating to the production of seismograms
IPC: G01V1/28
Filed: 1960-04-01
Abstract: 946,769. Geophysical prospecting. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. April 1, 1960 [April 3, 1959], No. 11597/60. Heading H4D. In a method of producing a seismic record substantially free from unwanted signals due to reverberations in subterranean layers, original signals (either from a " live " survey or from an extant seismic record) are combined in predetermined ratios with auxiliary signals which are differently time - displaced original signals. The disclosure includes a mathematical discussion of the effects of reverberation in the cases of a single water layer, a number of " non- coupled " layers, and a number of " coupled " layers, Figs. 1, 2 and 3 (none shown); layers are considered to be " coupled " if when taken together they give rise to reverberations within the bandwidth 5 to 300 c/s. In one embodiment the original signal Go(t) and time-delayedsignals G 0 (t - T1), G 0 (t - 2T 1 ), where T 1  corresponds to twice the depth of a single water layer and may be known, measured or estimated, are combined in an amplitude-doubling amplifier 11 after multiplication by respective factors ¢, r 1  and r 1  <SP>2</SP>/ 2 , where r 1  is an assumed or known reflexion coefficient. It is stated that the output signal G 1 (t) when recorded gives a seismogram substantially free of the effects of reverberation in the single water layer. If r 1  is negative, an inverting circuit 13 is used. In cases where r 1  is not accurately known, the process is repeated for a number of probable values and the most " legible " ensuing seismogram is chosen. Illustrations of recording before and after correction are given, Fig. 5 (not shown). More complicated examples, e.g. for several layers are described, Figs. 6 and 7 (neither shown). Photo-electric interpretation of a variable-area or variabledensity may be employed; delay lines may replace the magnetic reproduction arrangements; and the final " seismogram " may be a series of numerals.
Patent GB-569100-A (GB)
Title: Improvements in or relating to guanamines and methods of preparing the same
Filed: 1942-08-18
Abstract: Guanamines are prepared by reaction of an a b -unsaturated carboxylic acid ester with a biguanide or substituted biguanide. The reaction is preferably carried out in presence of an organic solvent and a metal alkoxide.  Examples give the preparation of methacryloguanamine from biguanide and methyl methacrylate with b -methoxyisobutyroguanamine as a by-product, sorboguanamine from biguanide and methyl sorbate, 4 - ethyl - 2 - octenoguanamine from biguanide and methyl 4 - ethyl - 2 - octenoate, 2-methoxybutyroguanamine from biguanide and methyl crotonate in methanol, b -ethoxybutyroguanamine from biguanide and methyl crotonate in ethanol, 4-nitrocinnamoguanamine from biguanide and ethyl 4-nitrocinnamate, cinnamoguanamine from biguanide and ethyl cinnamate, furylacryloguanamine from biguanide and ethyl furylacrylate.  Specification 569,101 is referred to.
Patent GB-281933-A (GB)
Title: Improvements in, or relating to the manufacture of, inflatable toys such as animals,tables, chairs and the like
IPC: A63H9/00
Filed: 1927-05-02
Abstract: 281,933. Lindemann, H. May 2,1927. Inflatable toys; animals; furniture.-In an inflatable toy animal, chair, table, &c., a connection a, Fig. 11, extends from the line of junction o of each pair of limbs to the opposite side of the body. The toy is formed from two pairs of rubber sheets. The lower half of each pair are cut and joined together, Fig. 1, to form the limbs of the animal. The two pairs are then superposed with the outer sheets b folded down, Fig. 5, and the inner sheets a are joined along a straight line o. The outer sheets are folded into their original position, Fig. 6. and the upper part of the figure pressed out. The sheets a may be provided with an aperture l to allow air to pass from one part of the animal to the other, or the sheets may be cut away leaving strips to act as connections.
Patent GB-983674-A (GB)
Title: Device for cutting and securing the weft end during the transfer of a bobbin from a bobbin winding device to the magazine of an automatic loom
IPC: D03D45/50
Filed: 1963-03-25
Abstract: 983,674. Looms combined with bobbin winding machines. OMITA S.p.A. March 25,1963 [Dec. 21,1962],No. 11690/63. Heading D1E. Bobbins wound by a winding frame g at s fall to a platform r at s<SP>1</SP> where arms 1, 2 pivot, the arm 1 taking the weft to scissors b and the arm 2 taking the weft to a weft end suction device 8. Operation of the scissors b and opening of the platform r allows the bobbin to fall down to magazine to s<SP>11</SP>, the device 8 retaining the cut end. A lever 11 (Fig. 3) moves to position the weft for bobbin changing.
Patent GB-672703-A (GB)
Title: Improvements in or relating to side-tipping railroad trucks and the like
IPC: B61D9/02
Filed: 1949-05-02
Abstract: 672,703. Tipping rail vehicles. RADWAN, M. May 2, 1949 [May 4, 1948], No. 11699/49. Class 103(iv) A laterally tipping railroad truck includes a body which is mounted on a roller movable laterally in the tipping direction and which is pivotable about a shaft, the roller and the shaft being mounted on the chassis of the truck in a plane of symmetry thereof when the truck is not being tipped and being below the centre of gravity of the body, wherein at least one discharge door is mounted on the body and is moved progressively sideways as tipping increases so that the force causing the body to tip is prevented from increasing after the body has begun to pivot about the shaft by a counteracting force produced by the weight of the discharge door. The body 1 is supported on the chassis by a roller h capable of lateral movement under the control of a device (not shown) comprising two racks engaging with and located one above and the other below a toothed wheel which is rotated and moved laterally in the direction of tipping of the body by a differential movement of the racks. Beneath the roller h a pin k is secured to the chassis and loosely journalled in a support W connected to the body 1 so that lateral movement in one direction of the pin k along a horizontal slot in the member W will be reacted by the pin k to cause the body to tip in the same direction. Triangular end plates bounded by ribs n are pivoted on pins d to each end wall of the body and secured to the doors c and the lower curved edge of each rib rests on a roller R mounted on the chassis. When the body is tipped the respective pin d is moved downwardly and outwardly with respect to the fixed roller R and the side door c is moved upwardly and outwardly from the side of the body, the resulting outof-balance moment of the Joor about the roller R tending to restore the body to its original position when it is emptied.