baber/WOPTO huggingface dataset:
Patent GB-827809-A (GB)
Title: Improvements in and relating to self-locking nuts and a method of making the same
IPC: F16B39/06
Filed: 1958-02-28
Abstract: 827,809. Making nuts; forging. UNITEDCARR FASTENER CORPORATION. Feb. 28, 1958 [March 15, 1957], No. 6613/58. Classes 83 (2) and 83 (4). [Also in Group XXV] A method for manufacturing a self-locking nut comprises drawing and punching a sheet-metal blank to form a cup-shaped member having a cylindrical wall, punching a bolt-receiving opening in the base of the cup-shaped member, forming a notch in the end of said wall with a tool which causes the metal of the wall to flow into the adjacent wall portions, internally threading the said wall and inwardly crimping the metal adjacent the notch to form a restricted end portion for engagement with a bolt when inserted therein. In an embodiment a steel strip 10 is progressively cupped, as shown in Fig. 1, the punching operation is indicated at 6 and the notching at 7. The notching is effected by a tool 16 having a projection 18 or by a sectional die comprising a split bushing 32 and an insert cutting tool 34 provided with a notchforming projection 35 (Figs. 10 and 12). The nut units are then cut from the strip, internally threaded and the notch partially closed by inwardly crimping the end of the tubular portion of the nut by means of a conical punch 26 or a punch 36 provided with a dowell pin 38 extending into the die opening 40. In a modification the lower barrel portion of the lock-nut is additionally drawn which results in a thinning of the metal adjacent the notch.
Patent GB-702678-A (GB)
Title: Improvements in internal expanding brakes
Inventor: POVEY GEORGE FREDERICK
IPC: F16D51/04
Filed: 1951-03-21
Abstract: 702,678. Internal band brakes. IDOSON MOTOR CYLINDER CO., Ltd. March 21, 1952 [March 21, 1951], No. 6738/51. Class 103(1) In an internal expanding brake of the kind comprising a brake drum 15 adapted to be attached to a member rotatable on a mounting, a brake band 1, carrying a brake lining 2, extends for most of the inner surface of the brake drum and is anchored to a member fixed with respect to the mounting wherein the ends of the band, to which are secured brackets 3 and 4, may be separated to apply the brake by the rotation of a cam 7, the cam having an operative surface having flanks symmetrical about an apex, the inner ends of the flanks meeting at the apex, the outer ends of the flanks and the apex lying on a. circumscribing circle whose centre is the axis of rotation of the cam and the operative cam face engaging a complementary shaped seating 6 near one end of the band. The band is centralized in a plane perpendicular to the axis of the fixed back plate 11 and the brake drum 15 by a square sectioned stud 12 which is located in channel shaped grooves 14 in the faces of a pair of opposed pads 13 secured to the back plate 11. Two further pairs of similar pads 13<SP>1</SP> may be secured to the back plate to accommodate further studs 12<SP>1</SP> when large braking forces are to be resisted. The cross-section of the stud 12 and the channel shaped grooves 14 may alternatively be of round or angular section.
Patent GB-904243-A (GB)
Title: Monostable transistor switching circuit
IPC: H03K3/284
Filed: 1960-02-26
Abstract: 904,243. Transistor flip - flop circuits. CANADA, MINISTER OF NATIONAL DEFENCE OF. Feb. 26, 1960 [May 25, 1959], No. 6853/60. Class 40 (6). A flip-flop circuit comprises a pair of complementary junction transistors with the collector of the first connected to the base of the second and the collector of the second connected to the base of the first through a series resistor which prevents the first transistor saturating and an inductor connected between the collector of one transistor and its source of current whereby the duration of the unstable state of the circuit is determined by the time the inductor current takes to change from one value to another. In Fig. 1 the collector of an NPN transistor T1 is connected directly to the base of a PNP transistor T1 and the collector of T2 is connected through a resistor R2 to the base of transistor T1. In the stable state, both transistors are non-conducting, the collector electrode potential of transistor T1 being clamped by diode D2 and the emitter and collector potentials of transistor T2 being clamped by diodes D3 and D5, respectively. The application of a pulse to the input terminal will render transistor T1 conducting and by regenerative action both transistors rapidly reach a highly conductive state in which due to R2 transistor T2 only is bottomed. In this state the collector potential of transistor T2 is clamped by diode D4 and the collector potential of transistor T1 is temporarily clamped by diode D2. A current will commence to flow in inductor L and will rise until it draws the whole of the current previously flowing through diode D2 and when this occurs the diode will cut off and the collector potential of transistor T1 will commence to rise. This will reduce the current in transistor T2 and by regenerative action both transistors quickly become non- conducting. The positions of the NPN and PNP transistors may be interchanged if the supply potentials and diodes are reversed (Fig. 4, not shown) and it is stated that the voltage across the inductor can be more accurately defined by connecting the inductor to a potential which is intermediate between the values V3 and V4. In an alternative circuit (Fig. 2, not shown) the inductor L is replaced by a resistor and transferred to the collector circuit of transistor T2. In this arrangement the duration of the unstable state is dependent upon the current in the load. A further circuit similar to this (Fig. 3, not shown) is arranged to be normally conducting in the stable state. In this circuit, triggering is effected by a transistor having its collector connected to the junction of the base of transistor T2 and collector of T1 and the duration of the unstable (cut-off state) is dependent upon the current in the load prior to the application of the input signal. If the return to the stable state is used to trigger further circuits the circuit can provide a variable time delay. Specifications 866,238 and 871,787 are referred to.
Patent GB-399402-A (GB)
Title: Process for the purification of water
IPC: C02F5/02
Filed: 1933-03-07
Abstract: To soften water it is caused to fall as a drizzle over bodies having carbonate surfaces in a closed container and in countercurrent to steam, which is supplied in such quantities that the water is heated to boiling point at the prevailing pressure but that all steam is condensed, so that only air or gases given off by the water collect at the top of the container, whence they are constantly drawn off. If the water contains permanent hardness it is removed by other treatment, for example, the base-exchange process.  Apparatus is described in which the bodies having carbonate surfaces are supported on a grate, the water is supplied by a distributer above and the steam below.  The steam supply valve is governed by a pressure or thermo-regulator.  Air and carbon dioxide are withdrawn from the top of the container by an ejector or pump.
Patent GB-759641-A (GB)
Title: Improved method of and apparatus for separating water from a water-bearing gaseous fluid
IPC: E03B3/28
Filed: 1954-03-10
Abstract: 759,641. Water supplies. COLBY, M. R. March 10, 1954 [March 12, 1953], No. 7025/54. Class 68(1) [Also in Group XIII] Water is obtained by directing water-bearing gaseous fluids into contact with a spray of an hygroscopic solution in an absorber 10 wherein a, substantial portion of the water in the fluids is absorbed by the solution. On leaving the absorber 10, the fluid,  e .g. air and the solution are separated, the air being drawn off through trunking 19 and discharged into storage spaces, e.g. the holds of a ship, and the solution being collected in a sump 16. Part of this solution so collected is removed at 37 from the sump 16 and is passed through a preheater 39 to an evaporator 52 where the water content of the solution is reduced by boiling-off the water therefrom. The steam is condensed in a condenser 65 and the water stored, whilst the hot solution of now reduced water content is returned via the preheater 39, in which it is cooled on transferring heat to the solution about to enter the evaporator 52, to the rest of the solution for recirculation through the absorber 10. The plant may be automatically controlled to maintain a given rate of absorption by sensing means 41 determining the water content of the solution in one part of the flow circuits and subsequently regulating the intake of gaseous fluid or the quantity of solution passed to the evaporator if the water content of the solution being sampled differs from a predetermined value. A condenser system 58 is provided in the path of the vapours leaving the evaporator to remove vapours of the hygroscopic solution. Alternative lay-outs of plant, to that shown, are also described.
Patent GB-1109527-A (GB)
Title: New substituted acetic acids
IPC: C07D319/18
Filed: 1966-02-17
Abstract: Novel compounds of formula <FORM:1109527/C2/1> wherein R1 is H or R11, R11 is C1- 4 alkyl and R is one of <FORM:1109527/C2/2> attached by either ring A or B, and their salts with organic or inorganic bases, are prepared by hydrolysis of the corresponding nitriles.  The novel compound have choleretic activity.  Nitriles of formula R.R1.R11.C-CN are prepared from compounds of formula R.CH2.CN by reaction with alkyl halides.
Patent GB-1206772-A (GB)
Title: Improvements in or relating to variable resistors
Inventor: MICHAEL PETER COLIN
IPC: H01C10/32
Filed: 1967-02-14
Abstract: 1,206,772. Variable resistors. PLESSEY CO. Ltd. 25 Jan., 1968 [14 Feb., 1967], No. 7096/67. Heading H1S. A variable resistor comprises a cup-shaped metallic housing 7 containing a cylindrical brass rotor assembly 1 having an operating shaft 2 and brush 4 bearing on the resistance element 15, and other brushes 5 bearing on the insulating disc 14. Springs 11 provide pressure for the brushes and connection from the rotor to the casing and thence to the lead 20. Leads 16 connect to the ends of the resistance element 15. In an alternative embodiment the housing 7 is insulating but has a conducting base to which connection is provided by the brushes 5.
Patent GB-414805-A (GB)
Title: Improvements in and connected with steel or other tubular scaffolding used in building construction and other purposes
IPC: E04G7/14
Filed: 1933-03-09
Abstract: 414,805. Scaffold clamps. DUFF, J., 99, Waterloo Street, Glasgow. March 9, 1933, No. 7120. [Class 20 (ii).] A right-angle coupler for poles consists of a casting of two sleeves H at right-angles, each sleeve being provided with a slot L at one side of its inner periphery to receive a pad K and an adjusting screw J, one edge of the pad being turned over to rest on the sleeve casting.
Patent GB-126429-A (GB)
Title: Improvements in or appertaining to Devices for Lubricating the Motors of Motor Road Vehicles and for other similar purposes.
Inventor: BAGGS CLAUDE ELVEY
IPC: F16N7/40
Filed: 1918-04-29
Abstract: 126,429. Baggs, C. E., and Thompson, S. J. April 29, 1918. Gravity-feed lubricators.-A lubricating system for the motors of motor-vehicles &c. is provided with means for automatically supplying additional oil to the crank-case under the control of a thermostat and for returning the extra oil to a tank when heating has been reduced. Oil from the crank-case A is raised by a pump a to a tank c from which the engine bearings are supplied by a pipe d. An overflow communicates with a second tank h provided with three overflows n<1>, m, m<1> at different levels leading into a pipe n communicating with the crank-case. The overflows m, m<1> are fitted with valves operated in succession by a thermostat o, so that, when overheating occurs, additional oil is supplied in two stages to the crank-case. The valves are closed by a spring, and the tank h then refills from the overflow h'. In a modification, the valves are operated by solenoids controlled by the thermostat.
Patent GB-993610-A (GB)
Title: Machine tools
IPC: B23G1/04
Filed: 1964-02-20
Abstract: 993,610. Lathe details. E. C. HAHN, [trading as INDEX-WERK KOMM. - GES. HAHN & TESSKY]. Feb. 20, 1964 [Feb. 20, 1963], No. 7149/64. Heading B3T. A lathe tool slide 16 is slidable on a way 14, and the stroke is provided by a cam 34, and a pivoted lever 10. The latter has a toothed quadrant 24, which co-operates with a rack 15 on the slide, and the cam follower 30 is adjustable in an arcuate slot 36 in the lever, to vary the stroke.
Patent GB-231166-A (GB)
Title: Improvements in valve gear shafts for internal combustion engines
IPC: F01L1/02
Filed: 1925-03-17
Abstract: 231,166. Cappa, G. C. March 21, 1924, [Convention date]. Securing together machine elements for the transmission of rotary motion.-In internal-combustion engines, particularly of the type described in Specifications 229,692 and 230,819, [booth in Class 7 (vi), Internal-combustion engines, Valves &c. for], the cam shaft is made in two halves 1, 2, which are coupled together by the engagement of longitudinal grooves 3 in the shafts with corresponding projections in the hub 4 of the gear wheel 5. Correct assembling of the shafts is ensured by making one 8 of the grooves and projections wider than the rest.
Patent GB-609184-A (GB)
Title: Improvements in or relating to the stabilization of cyanhydrins
IPC: C01C3/06
Filed: 1946-03-08
Abstract: Cyanhydrins are stabilized at temperatures below 350 DEG  C. by incorporating therewith a minor amount of free iodine which is at least 0.001 per cent by weight of the cyanhydrin.  Any impurities in the cyanhydrin which may react with iodine should be first removed or neutralized or the quantity of iodine added should be sufficiently in excess of that required to react with the impurities.  Examples show that lactonitrile; mandelonitrile neutralized with phosphoric acid, and the cyanhydrins of formaldehyde, -acetone and -acetoacetic ester are stable when distilled in the presence of a small amount of iodine.  The process may therefore be used to purify cyanhydrins by distillation.  Other cyanhydrins specified are those of acetaldehyde, benzaldehyde, acetophenone, furfural, crotonaldehyde, diacetyl, veratraldehyde, vanillin, diacetone alcohol, methyl amyl ketone, aldol, piperonal, butyraldehyde, acetoin, mesityl oxide, acetyl acetone, methyl isopropyl ketone and acetonyl acetone.  Specification 529,854 is referred to.  The Specification as open to inspection under Sect. 91 contains additional examples in which acetophenone cyanhydrin containing a trace of iodine is distilled under reduced pressure and lactonitrile containing isoline is passed through a tube heated to 400 DEG  C.  This subject-matter does not appear in the Specification as accepted.
Patent GB-141486-A (GB)
Title: Improvements in cases for pipes and for cigar and cigarette holders
IPC: A24F9/16
Filed: 1919-03-25
Abstract: 141,486. Dunhill, A. March 25, 1919. Ventilating cases.-The body part of a tobaccopipe case is formed with recesses e registering with slots f formed in the edge of the case to permit the escape of fumes &c. Modifications are described in which pipe cases and cases for cigar or cigarette holders are provided with one or more perforations in the meeting edges near the bowl of the pipe or mouth of the cigar holder &c. The perforations may have eyelets or lining-tubes so arranged that there is no internal or external projecting part.
Patent GB-664526-A (GB)
Title: Improvements in or relating to signal transmission circuits comprising glow discharge devices
IPC: H01J17/00
Filed: 1949-03-18
Abstract: 664,526. Discharge apparatus. WESTERN ELECTRIC CO., Inc. March 18, 1949 [March 27, 1948], No. 7437/49. Class 39 (i). In a signal transmission circuit including in the signal path a glow discharge device to which are applied signals and suitable operating potentials, the glow discharge device comprises an enclosing vessel having a gaseous filling and an anode and a cathode therewithin, the cathode to anode spacing and the gas pressure being such that the anode is in the Faraday dark space of the anodecathode discharge in a position such that anode glow does not occur, whereby the production of the oscillatory type of noise is minimized. One form of glow discharge device, Fig. 3, comprises a cylindrical cathode 112, for example of nickel having a coating of barium and strontium oxide mixture on its outer surface, and an anode comprising a plurality of parallel equally-spaced iron wires 111 supported in a cylindrical boundary coaxial with the cathode by a pair of metallic rings 16. The filling may comprise 99 per cent neon and 1 per cent argon at a pressure of 47 mm. of mercury with a cathode to anode spacing of 0.01-0.02 inch. In another form of device, a, rod anode extends axially into a cylindrical cathode and the filling may comprise argon or krypton or a mixture of argon and neon or mercury vapour or hydrogen. In a further form of device, Fig. 7, the cathode 312 and anode 311 are parallel discs and a starting gap and is provided in the form of electrodes 22 and 23 supported by leading-in conductors 20 encircled by insulating sleeves 21. The filling may comprise argon at a pressure of 5-36 mm. of mercury with a cathode to anode spacing of less than 0.64 inch.
Patent GB-350931-A (GB)
Title: Improvements in or relating to panels, slabs, blocks and the like for constructional, electric insulating and other purposes
IPC: H01B3/06
Filed: 1930-03-07
Abstract: 350,931. Slabs of impregnated fabric. SYMENTIS PRODUCTS, Ltd. and JONES, W. A., Symentis Works, Silk Street, Eccles, Lancashire. March 7, 1930, No. 7439. [Class 87 (i).] A panel, slab, block or the like for constructional electric insulation, and other purposes is formed by impregnating a sheet of woven or other asbestos fabric with a condensation product of phenol and formaldehyde and consolidating by heat and pressure. A thick slab or block is formed by doubling an impregnated sheet upon itself, or by assembling a number of such sheets under heat and pressure. Reference has been directed by the Comptroller to Specifications 299,906 and 336,731, [both in Class 36, Electricity, Conducting &c.].
Patent GB-1520161-A (GB)
Title: Epoxide resin mixtures
IPC: C08G77/388
Filed: 1976-02-25
Abstract: 1520161 Curable epoxy resin mixtures; organopolysiloxanes CIBA GEIGY AG 25 Feb 1976 [28 Feb 1975] 7480/76 Headings C3B and C3S Curable mixtures comprise: (I) a polyglycidyl compound; (II) as curing agent, a polysiloxane in which R1 is methyl, propyl or phenyl so as to form, respectively, dimethyl, dipropyl or diphenyl siloxane units, said dimethyl siloxane units alternating with the dipropyl- or diphenylsiloxane units, R3 is C2-3 alkylene and n=1-30; and (III) as curing catalyst, from 0À5-10% by weight (based on I+II) of a tertiary amine. The mixtures contain 0À2-1À1 equivalents of active amino hydrogen atoms of II per epoxide equivalent of I. I may be a diglycidyl ether of bisphenol A. In Examples II is prepared by reacting 1 mole of a linear poly(methyl phenylsiloxane) (M.W. 875) having methoxy end groups with 2 moles of (a) ethanolamine and (b) 1-amino-2-propanol. III may be N,N-dimethylaminopropylamine. Curing may take place at 50-100‹ C.
Patent GB-1305936-A (GB)
IPC: B24B49/04
Filed: 1970-02-17
Abstract: 1305936 Grinding; gauging LITTON INDUSTRIES Inc 17 Feb 1970 [17 Feb 1969] 7501/70 Headings B3B and B3D A dimension gauge and a work locator gauge are arranged on a single mounting and controlled so that the dimension gauge becomes operative only after the locator gauge has determined the workpiece position. The workpiece is held between centres and, after advance of the mounting, is moved axially until checked by a signal from the locator gauge, the dimension gauge being held inoperative. The mounting then withdraws and grinding commences. Near the end of the grinding operation the mounting advances again with the dimension gauge released to engage the workpiece during final grinding. A chordal gauge 31 and associated jet 34, Fig. 2, are mounted by leaf springs 63, 64, 67, 68 on an assembly 52, 53, 69 all rigidly joined at 70 to a pillar 71. The pillar 71 is reciprocated horizontally by piston and cylinder means 77, 78. A rod 72 acts as guide. The locator gauge is carried on an arm 35 mounted on a shaft 40 for pivotal movement derived from a pin and slot connection 55, 54 with the assembly 52, 53, 69. Projections 50, 51 on a hub 41 on the shaft 40 alternatively block jets 47, 48 to signal the extreme positions of the arm. At the end 36 of the arm is a jet towards which the work is moved by axial travel of head and tail stocks 16, 15 until obstruction by a flange 24, Fig. 7, of the work produces a signal to halt the movement. When the arm 35 is advanced to working position by movement to the right, Fig. 2, of the assembly, the dimension gauge is held back by piston and cylinder means 81, 83, 84, the cylinder 81 being fixed. The signal derived from correct location of the workpiece, causes withdrawal of the gauges during initial grinding. During final grinding both gauges advance, a further signal releasing the dimension gauge for advance by its spring mountings 67, 68. The arm 35 has portions thinned to provide resilience at the end 36, Fig. 4 (not shown), to prevent damage on accidental contact with the workpiece and to permit adjustment in the axial direction of the end relative to the main portion of the arm.
Patent GB-862502-A (GB)
Title: Improvements in or relating to roofs
IPC: E04B7/10
Filed: 1956-03-09
Abstract: 862,502. Roofs. BURGESS, D. C. June 7, 1957 [March 9, 1956], No. 7520/56. Class 20(4) A roof comprises a central longitudinal backbone 1 on each side of which are arranged laterally extending ribs 8 formed of pairs of triangular slabs rigidly connected at the rib sides 8 and downwardly inclined from their interconnections, the ribs being interconnected at their lower edges by triangular slabs 3 disposed either horizontally or sloping downward from the member 1. The member 1 comprises an inverted U-section metal girder bearing glass panels 5, the bases of the slabs 2 and apices of the slabs 3 being connected to the sides of the girder. The slabs may consist of concrete reinforced by expanded metal sheeting or of two outer sheets on opposite sides of a layer of filling material, or of flat metal sheets rivetted on the opposite sides of a central corrugated metal sheet. The outer surface of the roof may be covered with asphalt.
Patent GB-1140493-A (GB)
Title: Improved weed lifter
IPC: A01B1/18
Filed: 1967-02-17
Abstract: 1,140,493. Weed lifter. T. H. HILLS. 17 Nov., 1967 [17 Feb., 1967], No. 7753/67. Heading A1B. A weed lifter comprises a pair of jaws 12, 13 pivoted on a shaft 2 and operated by means of a cam 19 mounted on a rod 15 situated within the shaft 2 the cam co-operating with adjustable screw threaded cam followers 20 mounted on the jaws 12, 13.