baber/WOPTO huggingface dataset:
Patent GB-646522-A (GB)
Title: Improvements in and relating to methods of making porous cemented carbide
IPC: C22C29/00
Filed: 1948-03-05
Abstract: 646,522. Powder metallurgy. BRITISH THOMSON-HOUSTON CO., Ltd. March 5, 1948, No. 6927. Convention date, March 5, 1947. [Classes 83 (ii) and 83 (iv)] Making bearings, drawing dies, &c.- A method of making porous cemented carbide bodies having substantially continuous porosity consists in forming spheroidal bodies from a mixture of powdered hard metal carbide and an iron group metal, sintering the spheroids and then pressing a mass of the spheroids into contact with each other and heating, to a temperature at which they fuse together at their points of contact. The method may be used for making self-lubricating bearings, drawing dies and wear parts generally. The carbide may be of tungsten, tantalum or titanium or a mixture thereof in which tungsten carbide predominates. The iron group metal will comprise at least 3 per cent by weight. After reducing the powder to a grain size less than 40 microns so that it passes a 325 mesh screen, it is mixed with about 3 per cent by weight of a binder such as paraffin and a small amount of a moistening agent such as water, acetone or benzol and is then agglomerated into spheroids. These are coated with alumina or lamp black to prevent them sticking together and are sintered, first at 700‹ C. and then for fifteen minutes at 1400‹ C. to form hard fully-sintered particles of between 0.040 and 0.125 inch in diameter which are washed or otherwise treated to remove the alumina or lamp black and sorted by screening operations. Spheroids having the desired range of sizes are now mixed with a temporary binder pressed into the shape of the required article at a pressure of from 2 to 30 tons per square inch and are heated so that they fuse together at the points of contact. The fusion may be assisted by first coating the spheroids with a layer of the iron group metal. Where relatively coarse spheroids of between 20 to 100 mesh are used, prior pressing may not be required. The final article may be ground. The agglomeration of the powder into spheroids may be carried out by the apparatus shown, comprising a trough 1 inclined at 15-45 degrees on a flexible frame 2 and a vibrator 3 capable of giving the trough vertical vibrations of a frequency of several thousand per minute. A mixture of powder and binder is sprinkled in the trough in a thin layer and is caused by the vibrations to move upwardly to a bent portion 5, when it spills back on itself. The resulting spheroids 6 are discharged through a screen 7 into a container 8.
Patent GB-493697-A (GB)
Title: Improvements in and relating to vehicle brakes
IPC: B60T8/32
Filed: 1937-03-09
Abstract: 493,697. Vehicle brakes. THOMAS, A. R. March 9, 1937, No. 6956. [Class 103 (i)] A hydraulic transmission .brake operated by master cylinder 3, is provided with supplementary means to vary the braking pressure rapidly. This means comprises a diaphragm or piston at in contact with the transmission fluid and adapted to be oscillated by a motor 2. Control of the motor may be independent or interconnected with the brake applying mechanism. A constriction 7 or non- return valve insulated the master cylinder from the oscillations. The piston may be operated from the vehicle engine, induction pipe &c., or by direct electromagnetic excitation. The invention may be applied to mechanically operated brakes by means of cams operated electrically or by a lay shaft.
Patent GB-581192-A (GB)
Title: Improvements in or relating to grids particularly for electron discharge devices
IPC: H01J19/00
Filed: 1944-04-15
Abstract: 581,192. Grids for electron discharge devices. HOLMAN, H. E. April 15, 1944, No. 7012. [Class 39 (i)] [Also in Group XXII] Grids for electron discharge devices comprise a thin section cut transversely from an assembly of tubes or helices 1, 2, 3, 4, 5 either alone or in a containing tube 10. The helices &c. are of tungsten or molybdenum coated with platinum or zirconium. The tube 10 is similarly coated internally and the coating fuses on heating to hold the parts in assembled relation.
Patent GB-695019-A (GB)
Title: Improvements in or relating to amplifiers employing semi-conductors
Inventor: GROVER ERIC HOUGHTON
IPC: H01J19/44
Filed: 1950-03-21
Abstract: 695,019. Semiconductor amplifiers. STANDARD TELEPHONES & CABLES, Ltd. March 16, 1951 [March 21, 1950], No. 7017/50. Class 40 (vi). An amplifier comprises a body of semiconductor 1 having two main portions connected by a portion 5 of reduced cross-sectional area, an emitter electrode 6 and a collector electrode 7, and two base electrodes 2 and 3 in contact respectively with the two main portions, and means for separately biasing the collector and emitter electrodes with respect to a corresponding one of the base electrodes such that the emitter and collector currents flow in the same part of the intermediate portion 5. Assuming the semiconductor to be of N-type conductivity, the emitter electrode 6 is biased positively with respect to base electrode 3 by battery 8, and collector 7 is biased negatively with respect to base electrode 2 by battery 12, so that the interaction between the current is increased in the intermediate portion 5. The two base electrodes may be connected for signal frequencies by condenser 16. Input signals are applied via transformer 9, and the output is taken from transformer 13. In a modification, the slot 4 between the main portions of the semiconductor is made wider, and the emitter and collector electrodes make contact with the inside or bottom surface of the slot 4. Reference is made to Specification 681,809, [Group XXXIX] and 682,206.
Patent GB-180764-A (GB)
Title: Improvements in collapsible cases and crates
IPC: B65D6/16
Filed: 1921-03-04
Abstract: 180,764. Burgess, H. O., and Bibby, P. H. March 4, 1921. Folding crates or cases.-The sides 4 and ends 2 of a collapsable crate or case are hinged at different levels within a shallow box or tray-like portion 1 secured to the bottom 3; the sides and ends all extend to the bottom and are so divided and hinged horizontally that when the crate is collapsed they may be folded one upon another within the tray and secured by the lid 10. The sides, ends, or both are provided with battens such as 8, 11, projecting above their upper edges and fitting against the edges of the lid; the battens are also extended downwardly to enter recesses in the sides of the tray 1. The ends fit closely between the sides and have hook-like fasteners 12 adapted to engage bridge-plate parts 15 on the sides to prevent the upper parts of the latter from being forced outwardly. Abutments 18 are provided on the sides to prevent outward movement of the ends.
Patent GB-1410577-A (GB)
Title: Aeg-telefunken teldec method of producing a grinding foil
IPC: B24D18/00
Filed: 1974-02-15
Abstract: 1410577 Grinding foil TED BILDPLATTEN AG AEG TELEFUNKEN TELDEC 15 Feb 1974 7062/74 Heading C4V A grinding foil of plastics material is obtained by forming depressions uniformly in the foil surface, filling the depressions with a grinding material and deforming the foil so that the grinding material is embedded in the foil and so that the foil has a flat or otherwise profiled surface. The depressions may be obtained by pressing, for example with a pressing stamper having a relief surface which has been produced by cavitation of a metal surface.
Patent GB-321379-A (GB)
Title: Improvements in and relating to carving forks
IPC: A47G21/02
Filed: 1929-03-05
Abstract: 321,379. Fisher, T. H., and Walker & Hall, Ltd. March 5, 1929. Carving-forks. -The guard b of a carving-fork is retained in its effective position by a perforated member c' which is freely slidable on the guard and is shaped as at d to engage a recess formed on the body of the fork. The member c<1> is retained on the guard by the increased width of the latter at its free end. The inner end of the guard is bifurcated and straddles the body of the fork, to which it is secured by a transverse pin c, the ends of the bifurcated portion being shaped as shown to provide a rest for the fork.
Patent GB-716577-A (GB)
Title: Improvements relating to variable transmission gearing
IPC: F16H29/22
Filed: 1952-03-20
Abstract: 716,577. Ratchet gearing. MARCHI, A. DE. March 20, 1952 [March 29, 1951], No. 7217/52. Class 80 (2) A variable-speed ratchet gear comprises concentric input and output shafts connected by a variable throw eccentric and a plurality of interconnected one-way clutches. In a motor vehicle transmission as shown the eccentric is formed by a boss 7, Fig. 4, on a weight 6 pivoted at 4 to a disc 3, Fig. 1, on the input shaft 1. A further weight 5 is also pivoted to the disc 3 and connected to the weight 6 by a parallelogramic linkage 31, 32. A ring 10 mounted, through rollers 9, on the boss 7 has an annular groove in which are slidably located shoes 12 pivoted to cranks 13 attached to four shafts 14 equally spaced around an output shaft 8. The shafts 14 carry the inner members 18 of one-way clutches and ball bearings 20 for the outer members 19 of the clutches. The members of one diametrically opposite pair of clutches drive in the opposite direction to those of the other pair. Each member 19 is toothed at 21 and meshes, over its middle third, with the two adjacent members, the teeth extending over only two-thirds of the length of the members 19 and being staggered. Toothed wheels 22, 23 are movable, by virtue of splined connections 27, 28, into mesh with one or other of the opposite pairs of members 19 to select forward or reverse drive. A one-way clutch 26 may be provided to prevent overrunning of the engine by the output shaft 8 during forward drive when splines 27 on the shaft engage the inner member of the clutch.
Patent GB-609177-A (GB)
Title: Polyethylene-oxidation inhibitor
IPC: C08K5/18
Filed: 1946-03-08
Abstract: Polyethylene is stabilized against thermal degradation and discoloration by incorporating therein less than one per cent of diphenylamine, e.g. by hot milling in the presence of a lubricant, e.g. propylene glycol monostearate.  Specification 571,943 is referred to.
Patent GB-1132255-A (GB)
Title: Automatic washplant for vehicles
IPC: B60S3/06
Filed: 1966-02-18
Abstract: 1,132,255. Automatic vehicle washing plant. G. WEIGELE and J. SULZBERGER. 18 Feb., 1966 [18 Dec., 1965], No. 7317/66. Addition to 1,088,419. Heading B7J. The automatic plant for washing private cars of the parent Specification is modified in that the two vertical brush assemblies each comprise three, four, or five nylon brushes 14-17 and 18-21, pivotally mounted on arms 22, which are pivoted at 27 to a casing 31, each casing 31 being rotatably mounted on a fixed hollow support column 25 or 26 for continuous rotation, stops being provided on each arm 22 to prevent contact between the brushes, and the arms 22 being connected by tension springs 28 or by pneumatic or hydraulic resilient means, so that the arms are equiangularly spaced when not engaging a vehicle. The brushes 14-17, 18-21, are driven by reversible electric motors 36 controlled by switch boxes 33 which reverse the direction of rotation of each brush as it passes from the front 10 of the vehicle 1 to a long side 11 or 12, so that the brushes engaging the long side 11 rotate in opposite directions. Electric conductors and water pipes extend up through the columns 25, 26 to a distributer head 32 fixed to the casing 31, from which water is supplied to spray tubes 37. The vertical brushes are suspended from the arms 22 in bearings 38 which are also end mounted for free pivotal rotation on a horizontal axis 39.
Patent GB-1152922-A (GB)
Title: Improvements in Wrapping Machines
Inventor: ASQUITH KENNETH ALLAN
IPC: B65B9/06
Filed: 1967-02-15
Abstract: 1,152,922. Wrapping-machines. ROSE FORGROVE Ltd. 13 Feb., 1968 [15 Feb., 1967], No. 7317/67. Heading B8C. [Also in Division F2] A wrapping machine, for packaging articles in a continuously fed web which is folded to tubular form, sealed longitudinally and then transversely sealed between articles, the transverse sealing being by rotary crimping dies, comprises a sensing device responsive to the end of an article, to cause intermittent rotation of the dies. These revolve once to seal and cut each packaged article from the web. Articles 17, engaging stop 2, are intermittently moved by lugs 3 of a conveyer 23 in response to the end of a preceding article passing a photocell A, placed across a continuous conveyer 18, the photocell initiating engagement of a one revolution clutch (see Division F2). An article 17 enters a folding box 13 which forms a web 10, which may be of heat sealable material, into a tube 14, device 15 and rollers 16 longitudinally fin-sealing the tube. The end of the article 17 then passes a further photocell B (Fig. 1A, not shown) which actuates a further one revolution clutch identical with that earlier mentioned to drive sealing and cutting dies 20, 22 (Fig. 5, not shown). The web may be of cold pressure sealing material and if it is not transparent, other indicating means e.g. ultrasonic detectors may be used.
Patent GB-708925-A (GB)
Title: Separation of phenols by fractional distillation
Inventor: MILNER DAVID WILLIAM
IPC: C07C37/00
Filed: 1951-03-30
Abstract: Mesitol (2 : 4 : 6-trimethyl phenol) or 2 : 6-xylenol is recovered in a relatively concentrated form from a respective close-boiling phenolic fraction by subjecting the fraction to fractional azeotropic distillation with water.  The distillate fraction containing the desired phenol is then crystallized to recover the desired phenol in pure form, if necessary after this fraction has first been dry distilled to remove undesired phenols. The Specification describes the recovery of 2 : 6-xylenol from a cresol fraction and of mesitol from a fraction boiling at 220-225 DEG  C.ALSO:Mesitol (2 : 4 : 6-trimethyl phenol) or 2 : 6-xylenol is recovered from a respective close-boiling phenolic fraction by subjecting the fraction to fractional azeatropic distillation with water.  The distillate fraction containing the desired phenol is then crystallized to recover the desired phenol in pure form, if necessary after this fraction has first been dry distilled to remove undesired phenols. The Specification describes the recovery of 2 : 6-xylenol from a cresol fraction and of mesitol from a fraction boiling at 220 DEG -225 DEG C., the fractionation being performed in a column having about 15 theoretical plates.
Patent GB-100910-A (GB)
Title: Improvements in or relating to Mops.
Inventor: HARRISON ROBERT LEIGH
IPC: A47L13/58
Filed: 1916-05-25
Abstract: 100,910. Harrison, R. L. May 25, 1916. Cloths stretched over frames and backings; mop wringers.-In a mop, the cloth is normally stretched by a spring the reaction of which, when the cloth is twisted in wringing, untwists and again stretches it. In the construction shown in Fig. 1, the handle a of the mop carries a bent arm b having a socket d in which fits the stem e of a T-shaped rod f. The endless mop cloth j fits over the arm b and head of the rod f, and is kept stretched by a spring g. The cloth is wrung out by rotating the rod f, the rod sliding into the socket d owing to the shortening of the cloth. On the release of the rod, the spring untwists and stretches the cloth. Fig. 3 shows a construction of bucket for facilitating the wringing of the mop, the head of the rod f being held in the upper . shaped end of the rotatable tube p, through which the dirty water passes to the lower compartment m. The bucket is provided with a folding footpiece r for steadying it during wringing. In a modified construction, the upper end of the pipe p is made circular and provided with a square projection to engage the end of the mop head.
Patent GB-253605-A (GB)
Title: Improvements in or relating to electric relays
IPC: H01H71/44
Filed: 1925-03-19
Abstract: 253,605. Reyrolle & Co., Ltd., A., and Leeson, B. H. March ]9, 1925. Automatic circuit-breakers, intended to be immune from operation by surges or very transient overloads, comprise an armature movable practically instantaneously on overload, and a pivoted member acting under the influence of gravity or a light spring to release a catch and allow an instantaneously - moving contactmaker to close, the pivoted member being free to move directly the armature is moved but so constructed and arranged as to provide a short but definite time lag between the movement of the armature and release of the contact-maker. In the diagrammatic form shown in Fig. 1, the plate armature A is mounted on a pivoted lever A<1> provided with a weight A<2> adjustable so as to be just over-balanced by the armature. The latter rests in its unattracted position on a pivoted lever C provided with weights C<1>, C<2> adjustable so that when free the lever C is just overbalanced by weight C<2>. The lever C adjustably carries a light plate D slotted at D<1> to engage the end of a light spring arm E which carries a detent E<1> engaging a contactmaking lever F pivoted at F<1>. A spring G constantly tends to move the lever F practically instantaneously on to a contact H. On excess current in the electromagnet B, the armature A rises at once and the member C moves until the bottom of the slot D<1> engages the detent lever E to release the lever F and complete the trip circuit. The time delay depends on the lost motion at the slot D<1>, which is adjustable by a screw D<2>. In the slightly modified form shown in Fig. 2, the armature rests on an adjustable eccentric disc C<3> for varying the travel of the armature and the member C carries an adjustable light arm D<3> adapted to engage a detent arm E<2> fixed at E<3> to the frame. The arm E<2> carries a detent E<4> engaging a cross-wire F<2> between two contact blades F<3> which are adapted to contacts H' when moved by a spring G<1>. To reclose, pressure is applied to the face J<1> of a device J which has a projection J<2> for resetting the contact blades. The weights, in both forms, may be replaced by springs and instead of adjusting the relay setting by an eccentric disc, an adjustable shunt to the coil may be used. The pivoted member C is supported on knife edges or is otherwise pivoted so as to reduce friction, and the time lag is rendered practically constant for all overloads. The relay construction moreover is such that, in the event of transient heavy surges, the armature will return and reset on the member before the time lag can act to release the contact-maker, and as the armature and member are more or less balanced masses they are free from vibration disturbances. The relay is useful in protective systems using two relays, one acting instantaneously and the other with a definite very short time lag. According to the Provisional Specification the time lag may be from one-fiftieth to one-fifth of a second.
Patent GB-623639-A (GB)
Title: Improvements in bicycles and tricycles
IPC: B62M1/30
Filed: 1946-03-11
Abstract: 623,639. Bicycles and tricycles. PODBIELSKI, L. March 11, 1946, Nos. 7512 and 24642. [Class 136 (ii)] In a cycle, driving means comprises a stationary rear axle 25 fixed to the frame of the cycle, two treadles 15, 15<SP>1</SP> adapted to reciprocate with their hubs 2, 2' on the outer ends of the axle, bevel gears 30 on the inner ends of the hubs of the treadles, a cross pin 32 on the axle, a reversing bevel gear 31, on the cross pins engaging the bevel gears 30 and free wheel coupling alternately connecting the treadles, the reversing gear and the free wheel couplings being enclosed in a housing 5 driven by the treadles and carrying on its circumference a toothed wheel 22 from which the rotation of the rear wheel is derived by means of a train of gears, a toothed wheel 17 of this train being fixed to the rear wheel. The rear wheel 16 of the cycle is mounted between the prongs 19<SP>1</SP>, 19<SP>11</SP> of the rear fork 19. Hub 2 of one treadle is journalled in the eye of the hub 18 of the rear wheel which has fixed at the opposite end the pinion 17. Extensions of the hub 18 and of the pinion 17 are rotatably journalled in eyes of the prongs 19<SP>1</SP>, 1911. Journalled in the prong 19<SP>11</SP> are gears 20, 21, the gear 20 meshes with the pinion 17 and the gear 21 engages the gear 22 on the housing 5. In one modification prongs 19<SP>1</SP>, 19<SP>11</SP> are directly connected with the axle 25. In another modification the axle is fitted in lateral brackets connected to the frame and in a further modification the housing enclosing the bevel gears is provided with two circumferential toothed wheels and on a counter axle or shaft parallel to the axle of the rear wheel of the cycle are provided two corresponding toothed wheels each of which can at wili be brought into operative connection with a wheel on the housing by a double coned clutch or eccentric so as to obtain two different ratios of transmission.
Patent GB-614932-A (GB)
Title: Improvements in or relating to coated textile fabrics and method of coating the same
IPC: D06M15/244
Filed: 1946-03-11
Abstract: A copolymer of vinyl chloride and methyl acrylate is prepared by polymerizing in aqueous emulsion a mixture of 80 parts by weight of vinyl chloride and 20 parts of methyl acrylate.  After the completion of the polymerization reaction, the latex is heated and the copolymer plasticized by the addition of 80 parts by weight of dioctyl phthalate.  A closed vessel may be employed for the reaction.
Patent GB-124319-A (GB)
Title: Improvement relating to Tobacco Pipes.
Inventor: THOMAS DAVID JOHN
IPC: A24F5/08
Filed: 1918-05-06
Abstract: 124,319. Thomas, D. J. May 6, 1918. Tobacco pipes.-A bowl plug is formed with a performed cup a and two bent springy side-a.rms c with cutting-edges to scrape the inside of the bowl.
Patent GB-579139-A (GB)
Title: Improvements in ceramic pigments
IPC: C09C1/00
Filed: 1944-04-24
Abstract: 579,139. Ceramic pigments. TRIGGS, W. W. (Harshaw Chemical Co.). April 24, 1944, No. 7589. Drawings to Specification. [Classes 1 (ii) and 1 (iii) ] In the production of a ceramic pigment in the form of a discrete, calcined, xerogel of the empirical formula Fe2O3.xSio2, where x is of such value that the Fe2O3 does not exceed 15 per cent. of the combined weights of Fe2O3 and SiO2, a water soluble inorganic ferric salt, an alkali silicate and an inorganic acid are brought together in an aqueous medium to form, on standing, the desired gel, which is then dried at a temperature not exceeding 250‹C., to give a xerogel, washed with water and calcined. preferably in an oxidising atmosphere, for a period of 1 to 3 hours at 800‹-1400‹C. The calcined material is finally ground so that the particle size is between the 200 and 400 mesh sieve. The quantities of ferric salt and alkali silicate are chosen to give the desired composition in the final product, the proportion of acid to give a pH value of desired gel above that produced by hydrolysis of the ferric salt, and the amount of water selected to give, for example, a weight of reaction mixture 15 or 16 times that of the combined Fe2O3 and SiO, content thereof, in the case of the 15 per cent. Fe2O3 pigment. Examples are given.
Patent GB-984851-A (GB)
Title: Improvements relating to back washing machines
Inventor: BOWE MAURICE THOMAS
IPC: D06B3/10
Filed: 1963-02-26
Abstract: 984,851. Washing slivers. PETRIE & McNAUGHT Ltd. Feb. 21,1964 [Feb.26, 1963], No. 7606/63. Heading D1L. In a machine for back washing wool sliver a guide roller 6 is mounted adjacent the final washing roller 4 in the washing solution 2 so that slivers pass directly from the final roller to the guide roller and are supported by the rollers until they pass substantially horizontally from the guide roller 6 to the squeeze rollers 11, 12. In the form shown in which two identical washing arrangements are mounted in tandem, the guide roller 6 is mounted in self aligning bearings on slotted brackets 8 adjustably mounted on arms 9 which can swing about a fixed shaft to, the position of guide roller 6 is thus adjustable relative to roller 4. The roller 6, which may be driven, is preferably pressed against roller 4 to expel liquid from the slivers.