baber/WOPTO huggingface dataset:
Patent GB-1311972-A (GB)
Title: Electrochemical colouring of aluminium
IPC: C25D11/22
Filed: 1970-07-13
Abstract: 1311972 Colour anodizing aluminium CEGEDUR G P 13 July 1970 [16 July 1969] 33804/70 Heading C7B A pre-anodized article of A1 or alloy thereof, e.g. containing 0.6% Mg or 0.5% each of Si and Mg, is coloured by electrolysis in an aqueous acid solution comprising the colouring metal salt or salts, e.g. of Cu, Ni, Co, Cd, Ag or Mn, using A.C., e.g. of C.D. 0.1-1 A/dm<SP>2</SP>, with superimposed D.C. of intensity lower than that (e.g. from 1/10 to ¢) of the A.C. For uniform clear colour finish, the article is connected to the positive terminal of the D.C. source; for a high colouring rate, e.g. to obtain dark red or bronze finishes, the article is connected to the negative terminal. The counter-electrode may be of graphite, stainless steel or the metal of the colouring salt e.g. Cu or Ni. The coloured article may be sealed by immersion in boiling water which may contain 0.5-2 g/l Ni acetate. Anodizing may be effected in a H 2 SO 4  bath. Examples of colouring baths are: (i) H 2 SO 4 /<SP>a</SP>bath (pH 1.2) containing 15 g/l CuSO 4 ; (ii) a bath containing 100 g/l NiSO 4 , 25 g/l H 3  BO 3  and 50 g/l (NH 4 ) 2 SO 4 . Two (rows of) articles may be coloured simultaneously by connecting them to the ends of the secondary winding of a variable mains transformer, the centre tap of the winding being connected through a diode bridge, fed by another variable transformer, to the counter-electrode placed between the (rows of) articles. Reference has been directed by the Controller to Specification 1257047.
Patent GB-1255643-A (GB)
Title: Improvements in or relating to apparatus for removing worn road surfaces
Inventor: LOCKWOOD PETER
IPC: B28D1/18
Filed: 1968-03-20
Abstract: 1,255,643. Road surface cutting machines. GREENSIDE MACHINE CO. Ltd. 17 Jan., 1969 [20 March, 1968; 16 July, 1968], Nos. 13430/68 and 33811/68. Heading E1G. A reversible self-propelled or trailer machine for removing a worn road surface comprises a chassis 1 carrying one or more hydraulically-driven height-adjustable cutters rotating about a vertical or horizontal axis and each having a series of picks 18. As shown in Fig. 4 the cutter rotates about a vertical axis; in modifications the picks 18, Fig. 3, are reversibly mounted in a helical series of pick boxes 19 on multi-section drums rotating about horizontal axes. The cutting paths of the picks may overlap, to give a smooth surface, or be spaced to leave a rough surface. The cut material may be removed by a suction nozzle feeding a conveyor, but as shown is removed by converging ploughs 22 of adjustable height, optional rotary brushes 47, and a conveyer 26 adjustable about pivot 30. The cutter shown is driven at variable speed by a hydraulic motor and gearbox and is pivoted at 42 to a carriage 33 movable by a chain and sprocket 45 along a transverse beam pivotably suspended at 38 from the lower ends of inclined sliding beams 35. Hydraulic cylinders 43, 44, 40, 37 effect adjustment of the road-camber tilt and the height of the cutter. In a modification the laterally movable vertical cutter is replaced by a single laterally movable horizontal drum, Fig. 6 (not shown). In a further modification, Fig. 1 (not shown), a pair of laterally staggered horizontal cutter drums (4, 5) are simply suspended on swinging links. The horizontal drums may be inclined or at right angles to the longitudinal machine axis. The machine may be used (a) by holding the chassis stationary and traversing the cutter or (b) by moving the chassis together with the cutter.
Patent GB-1178581-A (GB)
Title: Improvements in or relating to Speed Monitoring Circuits
IPC: G01P1/10
Filed: 1967-07-24
Abstract: 1,178,581. Frequency discriminators. W. M ARTH, [trading as WILHELM STEINHOFF NACHF.]. 24 July, 1967 [22 July, 1966], No. 33859/67. Heading H3A. [Also in Division G1] In a rotational speed sensing system, pulses, whose repetition frequency is proportional to the test speed, are fed to a transistor circuit controlling a relay which is de-energized at a predetermined limiting pulse frequency. In one embodiment (Fig. 1), an iron member rotating with the drive shaft of a machine cyclically varies the coupling between a D.C. energized coil W1 and a secondary coil W2 to produce pulses in the latter which are clipped and fed to the base of transistor T1, normally biased to cut-off. The positive pulses continue this condition, wherein a capacitor C1 is charged and a transistor T2 conducts: the negative pulses cause transistor T1 to conduct, C1 discharges and T2 is cut-off. During the time that T2 is blocked, capacitor C2 is charged via resistor R3 and discharges when T2 conducts. A parallel capacitor C3 is also charged when the voltage across C2 exceeds that across C3 by the forward voltage of diode D3, the latter preventing C3 from discharging through T2. When capacitor C3 is charged above a preset voltage, transistor T3 conducts, lowering the voltage on C3. At low pulse frequencies capacitor C3 is kept charged above the voltage at which T3 conducts, but at a predetermined higher frequency the voltage on C2 is not sufficient to charge C3 and transistor T3 is cut-off. This allows transistor T4 to conduct and transistor T5 to be cut-off, whereby a relay R10 is de-energized. The time constants for charging C2 and C3 are determined by a variable resistor R3, which thus determines the frequency at which relay R10 is de-energized. A series arrangement of resistors R3, R3<SP>1</SP> (Fig 3) wherein the latter is normally shortcircuited by contacts r of relay R10, allows the relay to be re-energized at a lower frequency In a second embodiment (Fig 2, not shown), a capacitor C13 is kept charged to a voltage proportional to the pulse frequency, resulting in the charging of a capacitor C14 to a proportional voltage by the collector current of transistor T18 When this voltage reaches a predetermined value, transistor T16 conducts, causing transistor T17 to be cut-off, resulting in the de-energization of relay R10. The current through resistor R26 may be measured by a meter to give a continuous indication of the pulse frequency
Patent GB-435589-A (GB)
Title: Improvements in water softening apparatus
IPC: C02F1/42
Filed: 1934-11-26
Abstract: 435,589. Softening water. MARSH, H. M., 49, Proctor Boulevard, Hamilton, Ontario, Canada. Nov. 26, 1934, No. 33994. Convention date, Dec. 18, 1933. [Class 46] In zeolite water-softening apparatus means responsive to changes in the weight of a constant volume of the used brine passing through a counterbalanced bucket and normally flowing to waste during regeneration of the zeolite, are employed to divert part of the used brine to a tank in which it is retained for use is a subsequent regeneration. With the apparatus shown brine for regeneration is first drawn by a pump 36 through an outlet 4 from a tank 1 in which it has been retained after a previous regeneration operation. When the tank 1 is emptied, a float therein operates a three-way valve 3 to close the outlet 4 and open communication with a siphon 5, through which fresh brine is drawn from a solution tank 7. The used brine leaves the softener through a pipe 10, connected to a waste pipe 12. A portion of the brine passing to waste is directed through a pipe 14 to a constant-level tank 16 from which part is passed to a bucket 20 with an overflow pipe 21. The bucket 20 is suspended from a lever 22 with counterweight 23. When the specific gravity of the liquid in the bucket 20 rises sufficiently, the bucket falls and the lower end of the pipe 21 is closed by a valve 25 on a lever 29. A sudden further fall of the bucket results and the lever 29 operates a three-way valve 11 to direct the liquid from the pipe 10 through a pipe 30 in part, through a valve 31, to the tank 1 and in part, through a valve 37, to the tank 7. The bucket 20 is partially emptied through a bleed hole 33a and when the tank 1 is filled a float 32 therein allows a weight 35 to engage the lever 22 and by means of the weight 23 turn the lever 29 so that the valve 11 is operated so as to again direct the liquid from the pipe 10 to the waste pipe 12.
Patent GB-977359-A (GB)
Title: Process for the anionic polymerization of omega-lactams
IPC: C08G69/20
Filed: 1962-09-05
Abstract: In the examples: (16) 2-phenyl-4:6-dichloro-s-triazine is made by reacting cyanurc chloride with phenyl magnesium bromide; (17) 2-phenyl-4:6-diphenoxy-s-triazine is made by reacting 2-phenyl-4:6 dichloro-s-triazine with phenol; (18) 2-dimethylamino-4:6-dichloro-s-triazine is made by reacting dimethylamine with cyanuric chloride; (19) 2-dimethylamino-4:6-diphenoxy -striazine is made by reacting 2-dimethylamino-4:6-dichoro -striazine with phenol; (20) 2-diethylamino-4:6-dichloro -striazine and 2-diethylamino-4:6-diphenoxy -striazine are made by methods analogous to those described in examples (18) and (19) respectively and (21) 2:4-diphenoxy -striazine is made by reacting sodium phenoxide with cyanuric chloride to produce 2-chloro-4:6-diphenoxy -striazine which is then hydrogenated.ALSO:A process for the polymerization of an omega lactam containing at least 3 ring carbon atoms to a solid carboxylamide comprises heating, at a temperature above the melting point of the omega-lactam but below that of the resulting polymer, a reaction mixture consisting essentially of the lactam, an anionic catalyst which is the reaction product of an omega-lactam and a strong base, and, as co-catalyst, a symmetrical triazine derivative of the formula <FORM:0977359/C3/1> where R1 is an aryloxy, alkaryloxy or nitroaryloxy radical or a halogen atom and R2 and R3 are hydrogen or halogen atoms or alkyl, alkenyl, aryl, alkaryl, aryloxy, alkaryloxy, nitroaryloxy, alkoxy or dialkylamino radicals.  Many examples are given.
Patent GB-626695-A (GB)
Title: Improvements in or relating to powdered pigment compositions
IPC: C09B67/20
Filed: 1945-12-17
Abstract: A resin-pigment composition comprises discrete particles of an intimate dispersion of a pigment in a resin which is soluble and non-softening at normal temperatures, the amount of resin being at least equal to the critical amount for said pigment.  The " critical amount of resin " is that percentage weight of the resin calculated on the total weight of resin and pigment which, with a composition reduced to the form of discrete particles will show a satisfactory and full colour development on hand-stirring in less than ten minutes.  Preferably the discrete particles are from 40 to 200 and advantageously 50 to 140 mesh per linear inch.  An anti-bonding agent, i.e. a substance which prevents the resin-pigment particles sticking together, may be present preferably in from 5 to 10 per cent by weight of the discrete particles.  The resin-pigment composition may be prepared by mixing the resin and pigment in the above amounts under conditions of shear and at an elevated temperature such that the resin can undergo plastic flow and continuing to mix until all the pigment particles have become intimately dispersed and coated by the resin.  The mixing may be effected by milling the resin and pigment between a hot and a cold roller.  The ratio of resin to pigment may vary from 9 to 1 down to 2 to 8 as the average particle size of the pigment increases from 0.1 to 0.5 microns. Specified pigments are Toluidine Red, Monastral Blue, Lampblack, Prussian Blue, Red Iron Oxide, Ferrite Yellow, Light Chrome Green and Chrome Yellow. Specified resins are a pentaerythritol ester of a rosin-maleic anhydride addition product, a polymerized hydrocarbon product (" Velsicol," Registered Trade Mark), ester gum and Congo ester.  The resin pigment composition may be incorporated in coating compositions.ALSO:Pigments coated with resins (see Group III) are incorporated in enamels such as an alkyd varnish containing 21 per cent by weight of phthalic anhydride and 29 per cent by weight of a vegetable oil composed of equal parts of linseed oil and alkali refined soya bean oil, or in oleo-resinous varnishes such as a pentaerythritol ester of rosin in dehydrated castor oil.
Patent GB-384441-A (GB)
Title: Improvements relating to electric clocks
IPC: G04C15/00
Filed: 1931-12-09
Abstract: 384,441. Electric clocks. SMITH & SONS (MOTOR ACCESSORIES), Ltd., S., Central Works, Edgware Road, Cricklewood, and DORER, P. O., 36, Manor Lane, Lee, both in London. Dec. 9, 1931, No. 34127. Addition to 369,438. [Class 139.] In an improvement on the parent invention the conical projection i on the spindle e is adapted to engage with an abutment j rotatably mounted on the lever a but connected thereto through a spring k so that when the spindle is depressed to set the hands the projection i first engages the face l to rock lever a against the bias of spring m and on further depression slips past the face l, Fig. 2, whereupon the spring m rocks the lever a back to its normal position, the pawl b thereon imparting the starting impulse to the ratchet wheel d. During the return movement of the spindle the abutment j rotates about the lever a stressing the spring k, the lever remaining at rest. In a modification, a spring pawl replaces the projection i and during depression of the spindle first engages an abutment fixed to the lever a to rock the latter as above, and then allows the lever to give the motor starting impulse, the pawl slipping idly over the abutment on return of the spindle. In another modification the abutment j, Fig. 4, is resiliently connected through a spring to the arm a forming a bellcrank lever. On depression of the spindle e the projection i idly rocks the abutment j, stressing the spring k, the arm a being both rocked to operative position and released to give the starting impulse during the return motion of spindle e.
Patent GB-770649-A (GB)
Title: Electrical control device
IPC: H01C10/14
Filed: 1953-12-08
Abstract: 770,649. Electrical measuring apparatus. PYE, Ltd. Dec. 3, 1954 [Dec. 8, 1953], No. 34132/53. Class 40 (1). [Also in Groups XXXIV and XXXVII] In a control device for producing two voltages proportional to the position of a control member movement of the control member is opposed by an isotropic friction device whereby a substantially constant friction is applied irrespective of the direction of movement. As shown (Fig. 1) a control arm 1 is attached to a shaft 2 supported in bearings 2a in a frame 3 which is itself carried by a shaft 4 supported in bearings 4a in a fixed frame 5, so that control arm 1 is capable of swinging movement. Attached to frame 3 is a bracket 6 mounting a resistance strip 7, coacting with a slider 8 on the control arm, and attached to frame 5 is a bracket 11 carrying a further resistance strip 10 coacting with a slider 9 mounted on bracket 6. Thus voltages tapped off from resistors 7, 10 by sliders 8, 9 give the cartesian co-ordinates of the position of the control arm 1. The isotropic friction device comprises a spring-loaded element 13 attached to the control arm 1, sliding over a hemispherical cavity 12 in the frame 5, In another embodiment (Fig. 2) the isotropic friction device comprises a circular member 34 attached to the control arm 21, engaged by a plurality of fingers 35a carried by a ring 35 attached to the fixed outer frame 25.
Patent GB-876320-A (GB)
Title: Pharmaceutical compositions containing d-3:5-diiodothyronine
Inventor: CUTHBERTSON WILLIAM FRANCIS JA
IPC: A61K38/22
Filed: 1956-11-08
Abstract: A pharmaceutical preparation comprises unit dosage forms, for example tablets, capsules, cachets, adapted for oral administration, and containing at least 1 mgm. and not more than 100 mgms. of one, or a mixture of two or more of the following substances, namely D-3,5-diiodothyronine and simple derivatives thereof having similar physiological properties, for example non-toxic salts, O-acyl and N-acyl derivatives and methyl ethers and ethyl esters thereof, in association with an orally ingestible, non-toxic pharmaceutical carrier.
Patent GB-944442-A (GB)
Title: Igniter for explosives
IPC: F42C19/08
Filed: 1961-09-25
Abstract: 944,442. Detonators. J. O. BJORKLUND, J.A.D.ELDH,andG.V.GUSTAFFSON,[trading as FORSVARETS FABRIKSSTVRELSE]. Sept. 25, 1961 [Oct. 24, 1960], No. 34204/61 Heading F3A. A detonator for blasting charges or ammunition is ignitable by shock wave, impact, other than by firing pin, or heat and comprises a sleeve 5 having a thickness of 1-5 m.m., preferably 1-3 m.m., of metal, wood, plastics, ceramics or glass separates priming composition layers 3 and 6. The sleeve is closed by an aluminium foil disc 2 and a metal washer 8. The layer 3 is preferably between ¢ and 4 m.m. in thickness and may be of lead or silver azide with the addition of tricinate in the case of heat ignition. The layer 6 may be one or other of the above-mentioned azides and an explosive layer 7 of, for example, trotyl may be incorporated. In a second embodiment an aluminium or plastics cover is attached over aperture 1, the underside of which is coated with hard, sharpedged and brittle granules. To prevent undesired ignition a removable disc is fitted between the granules and layer 3. Preferably the disc is removed laterally through a slit in the sleeve. A third embodiment is provided with an annular electrode and a central pin electrode for spark ignition. The electrodes are insulated by a filling of enamel or plastics and to the composition of layer 3 may be added graphite.
Patent GB-619012-A (GB)
Title: Glazed roof construction
IPC: E04D3/08
Filed: 1946-11-19
Abstract: 619,012. Glazing roofs. WILSON, W. Nov. 19, 1946, No. 34278. [Class 20(iii)] In a roof construction comprising a rafter 11 having lateral shoulders 19 which support the edges of overlapping glass panes 12 and a central ridge 22 over which fit cap members 13 having flanges 24 extending over the pane edges, the lower edges of the panes (except for the lowermost panes) are supported by the upper edge of the next lower member 13, Fig. 4, and each member 13 has in its crown 23 an aperture at the lower end for receiving securing means 26 and a projection 27 at the upper end against which the lower edge of the next higher member 13 abuts. In the form shown, the rafters 11 have drainage grooves 21 and putty grooves 20 in the shoulders 19. The lowermost panes are supported by ribs 18, Fig. 5, on a Z-bar 14 screwed to the bottom of the rafters.
Patent GB-1088949-A (GB)
Title: Production of semiconductor devices
IPC: H01J9/12
Filed: 1965-08-11
Abstract: 1,088,949. Semi-conductor devices; cathode construction and materials. B. R. HOLEMAN. Aug. 23, 1966 [Aug. 11, 1965], No. 34288/65. Headings H1D and H1K. A semi-conductor body (for example of P- type germanium, silicon, or gallium arsenide) is provided in one face with a relatively conductive mesh or grid of the opposite conductivity type formed by diffusion, and this face is then provided with an overall layer of the same conductivity type but much thinner than this made by an ionic bombardment process (for example using an ion source of antimony, phosphorus, or arsenic). The bars of the mesh or grid act as bonding areas at which leads may be attached by thermocompression bonding without danger of penetration of the PN-junction. Such a structure may be used in solar cells or in photoemissive devices. In the latter case the active face may be coated with caesium to improve electron emission.
Patent GB-1366086-A (GB)
Title: Balances
IPC: A61M1/16
Filed: 1971-07-22
Abstract: 1366086 Weighing apparatus GLEVUM INDUSTRIAL DESIGNERS Ltd 24 July 1972 [22 July 1971] 34331/71 Heading G1W [Also in Division A5] In a hydrostatic balance 12, a float 31 supported by liquid in a container 32 carries the load to be weighed, and means sensing the level of liquid in a U-tube 36 which communicates with the container 32 provides a signal when the liquid attains a predetermined level. Photo-electric devices 38 set at a zero load level and an adjustable predetermined load level form the level sensing means. In Fig.3, (not shown), afloat (41) in a second U-tube also connected to the container completes an electric circuit when a predetermined upper level is attained to operate an alarm, and close a supply valve. In Fig.1, two hydrostatic balances 12, 25 are used in a medical dialysis unit. A container 10 is pivoted to the upper end of a rod 11 projecting upwardly from the float of balance 12. A container 23 is hung from a hook 24 suspended from the top of the float in balance 25. Timers 31x, 32x, 33x control the unit. A pump 14 passes sterile fluid from containers 16 to the container 10 until a predetermined weight is reached, when the pump is stopped and a valve 20 opened to allow the fluid to pass via a heated coil 18 to a patient. If the container 10 has not emptied within a predetermined time, an alarm is actuated. Valve 20 closes, and after a dwell period, a valve 22 opens to allow the now contaminated fluid to drain into the container 23. When the predetermined weight is reached in the container 23, valve 22 closes and a valve 28 opens to empty the container 23. Again, if the container has not emptied within a predetermined time, an alarm is actuated. Finally, valve 28 closes, and a fresh cycle is started. The various stages may be recorded by means not shown.
Patent GB-910711-A (GB)
Title: Stretch type fabrics having temporary stability
IPC: B32B27/00
Filed: 1959-10-09
Abstract: 910,711. Knitted fabrics; laminates. GENERAL TIRE & RUBBER CO. Oct. 9, 1959 [Oct. 27, 1958], No. 34340/59. Classes 74 (2) and 140. A laminated stretchable covering material (e.g. for upholstery) comprises a flexible thermoplastic resin film with a thickness of 0.005 to 0.05 inch bonded to one surface of a fabric backing which has a single layer of stretchable nylon, knitted fabric 14 and parallel rows of break threads 15 interlinked with the knitted fabric at a multiplicity of regularly spaced points along each row to provide temporary dimensional stability during calendering of the resin to the fabric backing; and the break threads are collectively weaker in tensile strength than the knitted fabric which, with the resin film, is capable of elongating in the direction of stretch by an amount of at least 25% and sufficient to rupture the break threads without rupturing the resin film or the knitted fabric, so that the break threads are ruptured when the resin film is moulded to cause the ground fabric to stretch in conformance thereto. The ground fabric may be a tricot fabric and the nylon yarn may be " twist-set-back." The break threads may provide parallel chains of knitted stitches in the warp direction and may be of " acetate " or of glass. They may be sewn to or woven in the base fabric. Weft  " break " threads may be incorporated. The backing may have been heated to at least 250 ‹ F. The resin film may be knifed on to the fabric backing and may be a composition containing polyvinyl chloride, or a plasticized copolymer of vinyl chloride and vinylidene chloride or vinyl acetate; or it may be nitrocellulose. The fabric may be treated with an adhesive such as latex or a nitrile rubber, before calendering.