baber/WOPTO huggingface dataset:
Patent GB-606663-A (GB)
Title: Improvements in or relating to chromium-carbon steels for bearing races and to heat treatment processes therefor
IPC: C21D9/40
Filed: 1945-04-26
Abstract: An alloy steel for bearing races has the following composition: C 0.8-1.25 per cent, Cr 1.2-1.7 per cent, Co up to 6 per cent, Fe the remainder together with the usual impurities present in iron. The content of Mn may be up to 1.0 per cent.  Bearing races made of the alloy are subjected to a hardening treatment comprising heating at 800-860 DEG C. for 15-60 minutes followed by quenching in oil and tempering from a temperature between 150 DEG C. and 250 DEG C. for about 30 minutes to effect the conversion of austenite to martensite. The bearing race may be cooled to a temperature below -60 DEG C. immediately prior to tempering.
Patent GB-294187-A (GB)
Title: Improvements in or relating to collapsible containers
IPC: B65D83/00
Filed: 1927-04-20
Abstract: 294,187. Hutt, A. C. April 20, 1927. Tubes or containers, collapsable. -Relates to collapsable containers of the kind which are provided with a stiff outer casing, in order to avoid the shapeless and unsightly appearance of the container when partially empty. In the form shown in Fig. 1, the container is of annular crosssection, having a rigid outer wall 10 and a collapsable inner wall 11, between which the material is enclosed. The inner wall is corrugated longitudinally, and can be distended outwardly towards the outer wall by means of a follower 14, in order to expel the material. A container of this form, having both walls collapsable, may be held in a stiff outer casing 19, Fig. 4, formed with a bulge 20, into which the outer wall of the container is forced when pressure is applied, so as to lock the two parts of the device together. A collapsable container 21, Fig. 5, of bellows form is provided with a deformable rib 22, which can be pressed into a groove at the upper end of a stiff outer casing 24. The container may comprise a flanged body part 25, Fig. 8, and a separate end-member 27, which can rest upon a shoulder 29 on a stiff outer casing 28. The rim of the casing is then turned over, so as to clamp the parts together. The collapsable container may be of telescopic form.
Patent GB-1163231-A (GB)
Title: Microwave Heating Apparatus
Inventor: HILTON KENNETH
IPC: H05B6/78
Filed: 1967-03-07
Abstract: 1,163,231. Microwave heating apparatus; R.F. couplings. HIRST (MICROWAVE HEATING) Ltd. 26 Feb., 1968 [7 March, 1967], No. 10592/67. Headings H4A and H5H. A serpentine assembly 11 of slotted waveguide sections 12 is provided at each end with a respective microwave generator 15, 16 so as to provide a more uniform heating of a sheet 13 of material than was possible with similar prior art apparatus using only one generator, e.g. Specification 1,050,493. Adjacent waveguide sections 12 are coupled by irises. The microwave power supplied by and incident on each magnetron 15 or 16 is monitored and compared, and the power supply to each magnetron is switched off when the ratio of incident to supplied power exceeds a predetermined value (see Figs. 3, 4, not shown). The sensing elements 19, 20, 21, 22 are mounted in the walls of the waveguide coupling sections 17, 18. An element 19 is a resistive loop directional coupler comprising a conductive body 25 with bores 26, 27. Bore 26 accommodates a resistor 28 connected by a loop 30 to the inner contact of a coaxial socket 31 screwed into bore 27.
Patent GB-1147557-A (GB)
Title: Junctionless non-rectifying solid state switching element, and method of producing it
IPC: H01L45/00
Filed: 1967-03-07
Abstract: 1,147,557. Semi-conductor switches. DANFOSS A.S. 7 March, 1967 [19 March, 1966], No. 10671/67. Heading H1K. A symmetrical switch which changes from a high to a low resistance condition when the applied voltage exceeds a threshold value and reverts when the current falls below a holding value, is made of a polycrystalline material exhibiting a discontinuity in its resistivitytemperature characteristic. Suitable materials are the lower oxides of transition metals, particularly vanadium oxide VO 2  and titanium oxide Ti 2 O 3 . The preferred device is made by forming a wafer of high-ohmic vanadium pentoxide by cathode sputtering in argon containing a little oxygen or by melting and quenching, applying electrodes to the opposed faces of the wafer and applying a forming voltage between them to convert a thin channel through the wafer to the form VO 2 . Preferably the channel has a length of <100Á and a diameter <10Á.
Patent GB-196617-A (GB)
Title: Improvements in or relating to letter cards
IPC: B42D15/08
Filed: 1923-04-19
Abstract: 196,617. Tiller, C. G., (Assignee of Dufour, P. G.). April 20, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Letter-sheets.-A letter-card is formed of two sheets secured together at their edges and having on their opposed faces advertisements which will be exposed when the letter-card is opened. The sheets 1, 2, shown as pasted together over onehalf of the surface, are provided with gummed and perforated borders 3, 4. When sold, the sheets are gummed together so that advertisements on the back of sheet 1 and the front of sheet 2 are concealed. On opening by removing the borders 3, 4, the two sheets are separated to expose the advertisements. To prevent total separation of the sheets, the gummed portion at one side may be slightly wider than the perforated border. The advertising-sheet may be arranged to extend over a part only of the second sheet.
Patent GB-591173-A (GB)
Title: Improvements in secrecy signalling systems and apparatus
IPC: H04K1/04
Filed: 1945-04-27
Abstract: 591,173. Scrambling. DEHN, F. B. (Press Wireless, Inc.). April 27, 1945, No. 10729. [Class 40 (iv)] [Also in Group XXXVIII] In a scrambling system, input signals modulate a continuously haphazardly varying carrier and a resulting side-band is used to modulate a second continuously haphazardly varying carrier whose frequency succession is different from that of the first. Speech currents from source 1, Fig. 1A, passing through low-pass filter 2 and filter 3a which tends to equalize the fundamental and harmonic components, are first inverted with respect to a fixed frequency (3500 c.p.s.) by modulator 4 and low-pass filter 6. The signals are then fed to modulator 7 whose carrier source 8 varies haphazardly between limits 4500 and 6000 c.p.s., low-pass filter 9 selecting the lower side-band which is fed to a further modulator 10 supplied from a different haphazardly varying frequency source 11, the lower side-band selected by fil er 12 being passed via switch 13 to the output terminals 14. At the receiving end, the signal passes through similar equipment in reverse, Fig. 1B (not shown), the frequency variations of the respective carrier sources being synchronized with their counterparts at the transmitter. The carrier frequencies may be recorded on a gramophone disc, Fig. 3A (not shown), from an oscillator whose frequency may be varied haphazardly by a manual control, copies of the disc being possessed by the receiving stations. A single groove may be used for both carrier frequencies, the pick-ups being set by verniers at different pre-arranged angular positions. A second groove is provided producing frequencies varying linearly from 400-4000 c.p.s., which signal, transmitted at intervals, and compared with frequencies from the corresponding groove at the receiver enables synchronization errors to be corrected. Individual grooves may alternatively be used for the two carrier sources and records may have spiral instead of continuous grooves, Fig. 3B (not shown). Other types of recording, e.g. photographic sound track, Figs. 3D and 3E (not shown), or steel tape may be used. Three variable frequency modulators may be used and " sum " instead of " difference " frequencies taken from any of the modulators. Random switching from one sound track to another may also be incorporated.
Patent GB-606115-A (GB)
Title: Apparatus for filling reservoirs and other receptacles with liquid
IPC: B67D7/48
Filed: 1945-04-27
Abstract: 606,115. Fluid-actuated valves. PIQUEREZ, E. April 27, 1945, No. 10735. Convention date, Jan. 13, 1944. [Class 135] In apparatus for filling a receptacle R with liquid and having automatic cut-off of the liquid when a pre-determined level is reached and in which the liquid passes at least in part through an injector 4, 5 to produce a pressure reduction in a diaphragm chamber 10 when a level-detecting tube 21 is closed by the liquid, the pressure reduction deflects the diaphragm and frees a stop 12 from the valve 1 so that it closes against its seat 42 under the pressure of the liquid flowing through the apparatus. The valve is automatically returned to its normal open position when the liquid supply is cut off and the liquid pressure is insufficient to resist the pressure of a spring 18 loading a relief valve 16. Liquid passes from the inlet 35, through the openings 32 in the valve 1 and the injector into the reservoir, if the flow is small. If the flow is large, the valve 16 is opened so that liquid also passes through the opening 37. The movement of the valve 1 is braked by the dash-pot 26.
Patent GB-1001864-A (GB)
Title: Improvements in and relating to machine tools
Inventor: HEPPELL DONALD ALBERT
IPC: B23Q5/26
Filed: 1961-03-24
Abstract: 1,001,864. Fluid pressure apparatus. MIDDESEX TOOL & GAUGE CO. Ltd. May 16, 1962 [March 24, 1961], No. 10870/61. Heading F1P. [Also in Division B3] Control means for reducing the rate of feed of a rotary tool holder which is axially moved by fluid pressure in a spindle head of a machine tool comprises, rod means located parallel to the axis of the tool holder and quill 13 which is adapted to actuate switches which control the fluid pressure circuit during the axial movement of the tool holder. The pressure circuit may be pneumatic, hydraulic or a combination of both. In the case of the former, shown in Fig. 5, the closing of the switch 49 actuates solenoid 52 which operates the valve 53 to permit compressed air to move the pistons 21 and 30 to the right which at the same time facilitates the expulsion of air from cylinder 32 via lines 57 and adjustable restrictor valve 59 and the open valve 60. At a predetermined part in the forward movement of the tool holder and quill switch 48 is closed which actuates solenoid 61 to close valve 60 and thereafter air is only allowed to pass through the restrictor valve 59. In consequence of this pressure builds up in the cylinder 32 and the rate of feed of the tool holder is slowed down to a predetermined value. At the end of. the feed movement a microswitch 70 is actuated which operates solenoid 71 to reverse valve 53 so that the spaces behind the piston 21 and 30 are connected to exhaust channel 72. The air supply is now connected to the line 73 and through a non return valve 74 to line 57 and into cylinder 32 to effect the return of the tool holder and quill to their initial position. In the embodiment shown in Fig. 6 the pressure system is a combination of pneumatic and hydraulic pressure in which air pressure is adapted to act upon an hydraulic fluid, e.g. oil, in reservoirs 81 and 89 which are connected to feed and return cylinders respectively. The operating switches 91, 77 and 95 being the equivalent to switches 48, 49 and 70 in the pneumatic circuit. Specification 1,001,865 is referred to.
Patent GB-893061-A (GB)
Title: Improvements in or relating to sintered uranium dioxide
IPC: C04B35/51
Filed: 1960-03-28
Abstract: Sintered stoichiometric uranium dioxide of an apparent density of at least 10,4 is prepared by calcining ammonium uranate and thereafter reducing it in dry cracked ammonia in two stages, the first at 350 DEG  to 450 DEG C., serving to reduce the UO3 to UO2 and a second at 600 DEG  to 700 DEG C.; the uranium dioxide powder is then pyrophoric and is reoxidized in a current of nitrogen containing oxygen thereby obtaining a uranium dioxide of approximate composition UO2,25; a moulding additive is then incorporated and the oxide is compressed in vacuo, crushed and screened and then compressed at a pressure of 2,5 to 5 tonne/cm.2  The moulding additive is removed by heating in vacuo at temperatures up to 700 DEG  C. and the oxide sintered in an atmosphere of dry cracked ammonia for 5 hours at a temperature of 1250 DEG  to 1400 DEG C.  A suitable moulding additive is a mixture of stearic acid and camphor in a volatile solvent such as carbon tetrachloride.  The function of the first moulding stage is the increase in apparent density which permits more precise moulding in the second stage.
Patent GB-378834-A (GB)
Title: Improvements in the manufacture of bars, strips or plates from wrought-iron pile
IPC: B23K20/22
Filed: 1931-12-11
Abstract: 378,834. Piling. SCOTTISH IRON STEEL CO., Ltd., 53, Bothwell Street, Glasgow, and WATERSTON, H. C., Trearne, Queen Street, Helensburgh, Dumbartonshire. Dec. 11, 1931, No. 10941/32 (divided on 375,434) and 10942/32. [Class 83 (iv).] Bars or plate! from which strips may be sheared are produced from piles of puddled bar comprising layers A<1>. A<4> of indented bar assembled so that the indentations of each bar receive the ribs C between the indentations of adjacent bars. Specification 375,434 is referred to.
Patent GB-1214273-A (GB)
Title: Extrusion head.
IPC: B29C48/10
Filed: 1969-02-28
Abstract: 1,214,273. Extrusion die heads. LAVORAZIONE MATERIE PLASTICHE S.p.A. 28 Feb., 1969 [4 March, 1968], No. 10954/69. Heading B5A. In a tube-forming extrusion die head, particularly intended for the production of tubes of foamed thermoplastics, e.g. polystyrene, the mandrel is of generally "pear" shape and incorporates a spider 4 in the region of its maximum diameter, the spider having at least thirty-six fins 4a which sub-divide the flow of material through passage P, the passage converging in the neighbourhood of the downstream ends of the fins as at 5a. Preferably the fins have wedge-shaped upstream and downstream ends (4d, 4e), Fig. 4 (not shown), are equally spaced within the passageway, and exceed forty-eight in number. Preferably the converging portion of passageway P is formed, as shown, in the outer wall thereof and extends downstream to the wedge-shaped ends (4e) see Fig. 3 (not reproduced), of the fins, although the convergence may continue to the downstream extremities of the fins. The extrusion orifice 25 of the die head is adjustable by rotation of combined parts 14 and 10, the former being rotated by a pinion 12a and the latter being screw-fitted to part 8 at F. A sizing mandrel 15 is cooled by water flow in channels 23 and the extrudate is cooled externally by air from cooling ring 26. Air from a further ring 27 on mandrel 15 inflates and cools the emerging extrudate and acts as a lubricant about the sizing mandrel. This mandrel is coupled to a double-walled extension (16), Fig. 2 (not shown), and the complete mandrel 15 (16) is slidable towards and away from the extrusion orifice on a fixed frame (19). The tube is longitudinally slit by a knife (30).
Patent GB-1038529-A (GB)
Title: 7-(ª‡-substituted acylamino) cephalosporanic acid and derivatives thereof
IPC: A61K31/545
Filed: 1965-03-15
Abstract: 7-(a -substituted acylamino) cephalosporanic acids and derivatives thereof have the formula <FORM:1038529/C2/1> wherein R is a halogen atom, azido, carbamoyl, alkylthio, alkanoyl, alkanoyloxy, alkoxyalkoxy, alkoxy - aralkyl, naphthoxy, halonaphthoxy, ethoxycarbonyl, arylthio, halo-arylthio or phenoxy having alkenyl and alkoxy substituents; R1 is aryl, haloaryl, nitroaryl, aryloxy or arylthio; R11 is acetoxy, pyridinium, aminopyridinium, imidazolinium or methylimidazolinium; M is hydrogen, a pharmaceutically acceptable non-toxic cation or an anionic charge.  Compounds are prepared by reacting 7-aminocephalosporanic acid or a derivative of formula <FORM:1038529/C2/2> wherein R11 and M are as defined above, with an a -substituted carboxylic acid of formula <FORM:1038529/C2/3> wherein R and R1 are as defined above, or a reactive derivative thereof, and if desired forming the salt.  Compounds where R11 is acetoxy may be reacted with pyridine, aminopyridine, imidazole or methylimidazole to form the corresponding 3 - pyridinium, 3 - aminopyridinium, 3 - imidazolinium or 3 - methylimidazolinium compound.  The compounds are antimicrobial agents.
Patent GB-880912-A (GB)
Title: New thiocarbamyl sulphenamides
Inventor: DADSON LAWRENCE MICHAEL
IPC: C08K5/00
Filed: 1959-04-01
Abstract: Natural and synthetic rubbers are vulcanized in presence of sulphur or a sulphur bearing substance (e.g. tetramethyl thiuramdisulphide) and a thiocarbamyl sulphenamide of the formula <FORM:0880912/IV (a)/1> where R and R1 each represent a C1-3 primary alkyl group and R2 represents a tertiary alkyl group.  Rubbers used are smoked sheet, polymers of butadiene, isoprene and 2-chlorobutadiene and copolymers of the latter monomers with isobutylene, acrylonitrile, styrene and methyl methacrylate. Adjuvants which may be present are fillers, channel and furnace blacks, antioxidants, antiozonants, waxes, blowing agents, pigments (zinc oxide), softeners, processing oils, stearic acid and vulcanization retarding agents (e.g. nitrosated arylamines).ALSO:The invention comprises thiocarbamyl sulphonamides of the formula <FORM:0880912/IV (b)/1> where R and R1 each represent a C1-3 primary alkyl group and R2 represents a tertiary alkyl group, e.g. tertiary butyl, tertiary amyl, tertiary octyl or 1,1,3,3-tetramethylbutyl.  The compounds are prepared by reaction between equimolecular proportions of an N-chloro-tertiary alkylamine and a salt (e.g. an alkali metal salt) of an appropriate N : N-dialkyl dithiocarbonic acid in aqueous solution, or by oxidizing a tertiary alkylamine salt of an appropriate N : N-dialkyl dithocarbonic acid with a hypochlorate, hydrogen peroxide or a halogen in aqueous solution.
Patent GB-470937-A (GB)
Title: Improvements in or relating to folding boxes
IPC: B65D5/30
Filed: 1936-04-17
Abstract: 470,937. Folding cardboard boxes. ROBINSON, E. April, 17, 1936, No. 11111. [Class 18] A folding box which can if desired be folded around the contents, comprises bottom 11, sides 12, 14, a lid section or lid sections 13, 15 which overlap, ends 16, 17, hooked side extensions 19, 20, 21, 22 engaging slits 18, and lid flaps 27, 28, 29, 30 which enter the slits between flaps 16 and 17 and flaps 19 .. 22. The length of sides 23 of extensions 19-22 varies up to nearly half the width of the box, the edges 24, which terminate in notches 26 have their length a equal to a<1>. The hook portions of the extensions 27-30 are longer than those of extension 19-22 and the edges 31 are inclined to the hinge line at a greater angle than the edges 24, and the length b is greater than the length a by the depth of the notch. In the assembled position the notches 26, 31 and the ends of the slits 18 interlock. Flaps 16, 17 may be made deeper than flaps 19-22 and flaps 19, 21 may be so dimensioned that in the assembled position they meet. Specifications 328,739, 332,961, [both in Class 18], and 438,057 are referred to.
Patent GB-604762-A (GB)
Title: Improvements in and relating to revoluble magnetic rotors particularly for magnetos
IPC: H02K1/27
Filed: 1945-05-02
Abstract: 604,762. Machines with permanent magnets. BERNARD, J. May 2, 1945, No. 11183. Convention date, April 23, 1943. [Class 35] In a multipolar magnet rotor with pole shoes held on the magnet or magnets by cast non- magnetic metal, the circuit between this non- magnetic metal and the shaft is interrupted, e.g. by layers of insulation. In the form shown in Fig. 5 the non-magnetic metal 7 extends into pockets 14 in the pole shoes 2 which are also held by non-magnetic end plates. The magnet 1 has a bore of greater diameter than the shaft from which is is separated by an insulating sleeve. The magnet limbs may be separate magnets each engaging a central magnetic block and each limb may be grooved to receive the non-magnetic metal. The pole faces may be concave as shown in Fig. 8.
Patent GB-300248-A (GB)
IPC: C22C30/00
Filed: 1928-04-16
Abstract: 300,248. Barber Asphalt Co., (Assignees of Davis, A. B.). Nov. 10, 1927, [Convention date]. Alloys.-Iron alloys contain 20-38 per cent of nickel, 16-25 per cent of chromium, 0.1-1 per cent of silicon, 1-2 per cent of manganese, and 5-8 per cent of tungsten. Copper or cobalt or both may be added, the total amount of tungsten, copper, cobalt, silicon, and manganese being not more than about 10 per cent. According to the Specification as open to inspection under Sect. 91 (3) (a) the alloys contain 20-40 per cent of nickel and 15-25 per cent of chromium, and the presence of tungsten is optional. This subject-matter does not appear in the Specification as accepted.
Patent GB-726117-A (GB)
Title: Improvements in and relating to rotors for dynamo-electric machines
IPC: H02K1/27
Filed: 1953-04-23
Abstract: 726,117. Machines with permanent magnets; cooling dynamo-electric machines. GENERAL ELECTRIC CO. April 23, 1953 [May 3, 1952], No. 11218/53. Class 35. [Also in Group XXII] A dynamo-electric machine rotor comprises a central hub 12 on the outer periphery of which axially extending tongues 15 define a number of slots 16, permanent magnet blocks 17, e.g. of alnico, located one in each of the slots and having protrusions 18 on their end faces, soft steel pole tips 19 located one on each of the blocks in register with the radially outer surface thereof and having lips 21 on their side faces; and a non-ferrous metal casting, e.g. of aluminium, partly surrounding the hub, blocks and pole tip to engage the protrusions and lips thusto hold these members together. The pole tips each have an axial slot 20 filled by the cast metal to provide a damping or a squirrel-cage starting winding depending upon whether the machine is used as a generator or as a motor. The cast metal may also form fan blades 37b, 37c at the two ends of the rotor and which may be dissimilar in number, or size, or both, as shown, to create a flow of ventilating medium, e.g. air, through axial passages 14 in the hub 12. A method of assembling the members and casting the metal in a mould, Fig. 2, not shown, is described. Specification 708,784 is referred to.
Patent GB-724214-A (GB)
Title: Improvements in or relating to the production of composite material for the manufacture of plain bearings
Inventor: FORRESTER PETER GARNETT
IPC: B32B15/01
Filed: 1952-05-05
Abstract: In a method of making composite material for bearings or bearing liners comprising a soft aluminium alloy bonded to a backing of hard aluminium alloy, a duplex slab is produced by heating a slab of one alloy to a temperature below its melting point and applying thereto a molten layer of the other alloy, rolling the duplex slab to at least 10 per cent reduction, heat treating the slab at about 465 DEG C. for about 4 hours and then rolling the slab into a long bimetal strip. In an example a slab of hard aluminium alloy containing 4.4 per cent copper 1.5 per cent magnesium and 0.6 per cent manganese is heated to 450 DEG C. and a melted soft aluminium alloy which may contain 7-50 per cent tin and small quantities of copper, lead and antimony but, e.g. contains up to 30 per cent tin and 1 per cent copper is applied thereto.  The surface of the hard alloy may be pretinned.  The slab is rolled to effect at least 10 per cent reduction and the slab now 2 inches thich is heated at about 468 DEG C. for about 4 hours and is then rolled in several passes to 1 inch thickness, then annealed by heating at 250 DEG C. for about 2 hours, then rolled in several passes to 1/2 inch thickness followed by a second similar annealing and finally rolled to 1/2 inch thickness. The strip is annealed again before cutting into bearing blanks. The heat treatment during rolling removes work hardening and re-crystallizes the aluminium.  As a final stage the strip may be cooled naturally or by quenching, rolled to obtain about 10 per cent reduction, heat treated at about 465 DEG C. for about 4 hours and then quenched.