baber/WOPTO huggingface dataset:
Patent GB-368171-A (GB)
Title: Pressure die-casting apparatus
IPC: B22D17/06
Filed: 1931-06-23
Abstract: 368,171. Casting-machines. ELEKTRONMETALL GES., Canstatt, Stuttgart, Germany. June 23, 1931, No. 18153. Convention date, Oct. 11, 1930. Addition to 365,446. [Class 83 (i).] Metal-pouring.-In a die-casting machine, as described in the parent Specification, the valve controlling the admission of metal into the forcing chamber b is combined with the air inlet pipe d and is arranged to advance, after closing the metal inlet c, through a distance m to raise the metal to the level of the nozzle orifice h. During this movement the pipe d must be closed. Part of the chamber may extend beyond the pot a. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification in which the pipe d is not connected to the mould but is operated independently. This subject-matter does not appear in the Specification as accepted.
Patent GB-698012-A (GB)
Title: Tyre locating device for retreading moulds
Inventor: GLYNN EDWIN ALLEN
IPC: B29D30/54
Filed: 1951-08-03
Abstract: 698,012. Tyre retreading moulds. SUPER MOLD CORPORATION OF CALIFORNIA. Aug. 3, 1951, No. 18438/51. Class 87 (ii)  A tyre locating device, for a tyre retreading mould including' an annular body having a matrix therein, comprises a flat-faced rim concentric to and spaced radially inwardly of the matrix, a pair of spaced tyre head engaging rings relatively slidably disposed on the flat-faced rim for axial separation, and means between the rings and body operative to limit axial separation of the rings and to maintain the latter symmetrical to the matrix. The tyre head engaging rings 8 are mounted on a wide flat-faced rim 7 and can slide axially on it, the rim 7 being concentric with the annular mould halves 2. The mould halves 2, with steam chambers C, enclose matrix halves 5 and are brought together by power operated means, not shown, the tyre to be retreaded being in position in the mould (a slot 18 being provided in the rim 7 for a stem 17 on the inner tube). When the tyre is inflated the head engaging rims 8 are forced apart until their flanges 14 meet skirts 3 expanding inwards from the mould halves 2, so holding the tyre heads symmetrically and concentric with the matrix, and preventing vulcanization of the tread on the tyre off centre. When the mould is used in the flat position a bead 19 prevents the rim 7 from dropping out of position. The distance between the tyre heads may be adjusted by using head engaging rims with differently-shaped flanges.
Patent GB-403719-A (GB)
Title: Improvements in or relating to the manufacture of sodium aluminate
IPC: C01F7/02
Filed: 1932-06-30
Abstract: In the production of solid sodium aluminate, finely ground alumina is mixed with finely ground soda ash, sodium aluminate is added as a bonding agent and water sufficient to render the mass moldable, the mixture briquetted and the dried briquettes heated at 900--1100 DEG C.  Substantially pure soda ash and alumina may be employed.  These may be admixed in theoretical proportions, but excess of the former is preferably used to compensate for volatilization losses.  The raw materials are ground to 80--100 mesh.  About 15--20 per cent of sodium aluminate reckoned on the dry weight of the mixture is employed, and may be added in solution, or preferably in solid form with subsequent addition of water.  About 10--15 per cent of water reckoned on the total weight of the mixture is usually employed. Surface combustion hearth furnaces and rotary kilns may be employed.
Patent GB-583013-A (GB)
Title: Improvements in and relating to number printing apparatus
IPC: B41K3/10
Filed: 1944-09-28
Abstract: 583,013. Number - printing apparatus. JONES, K. W. Sept. 28, 1944, No. 18564. Class 100 (ii)] In number-printing apparatus employed in or associated with printing or other-machines to print or impress numbers on sheets or webs, of the kind comprising type wheels 1 rotatable on a spindle 2 mounted in the arms 3 of a box, the units wheel being advanced by a drive rocker 4 rocked about the spindle 2 and pawls 6 engaging ratchets 5 being provided to prevent backward rotation of the type wheels 1, the pawls 6 are provided remote from the base of the box with shoulders 7 or the equivalent adapted to be engaged by a pawl-lifting device operative when applied to the box to disengage simultaneously all the pawls from the ratchets of the respective type-wheels and retain them in their disengaged positions, the pawls reengaging the ratchets when the device is disengaged from the box. This facilitates changing the wheels when, for instance, non- consecutive numbering is required and allows the wheels to be turned into accessible positions for cleaning. Readily releasable means for retaining in position the spindle carrying the wheels is also described. The pawl-lifting device shown comprises two T-shaped plates 22, 23 connected by a C-spring 24, the cross bar 25 of the plate 23 having arms 25 adapted to bear on the sides 3 of the box, and that of the plate 22 having tines 26 engaging the shoulders 7 on the pawls 6. The arms 22, 23 are pressed together whereupon the device can be inserted in position on the box. The shoulders 7 may be at the tops of the pawls in which case the tines 26 are not necessary, or pins may be provided instead of shoulders. The spindle 2 is held in position by a spring-pressed arm 12, Fig. 5, pivoted at 13, the pointed end of which engages a hole in the spindle and which has a shoulder &c. 7 similar to those on the pawls 6, adapted to be engaged by the plate 22 to release the spindle simultaneously with the release of the pawls 6. The arm 12 may be carried by a slidable block having a pin-and-slot connection with a pivoted arm, and may have an arcuate end engaging a groove in the spindle, or the end may enter a slot in the spindle. The spindle may be located in the correct angular position to receive the arm 11, by means of a lug engaging a recess in the box frame, and may have a detachable conical end for facilitating threading through the wheels.
Patent GB-313856-A (GB)
Title: Method of and apparatus for melting oxidisable material
IPC: C22B7/00
Filed: 1929-06-17
Abstract: 313,856. Hirsch, Kupfer-und Mes singwerke Akt.-Ges. June 16, 1928, [Convention date]. Induction furnaces. - A crucible B for melting scrap brass &c. is surrounded by an induction coil A and surmounted by chambers C, F separated by a grid E and sliding plate H. The vapour escaping from the bath passes through the charge in the chamber F. Reference has been directed by the Comptroller to Specifications 12342/08, [Class 51, Furnaces and kilns], and 6433/15, [Class 51 (ii), Furnaces and kilns for applying &c.].
Patent GB-1361116-A (GB)
Title: Preparation of rubbery copolymers
IPC: C08F236/04
Filed: 1972-04-21
Abstract: 1361116 Diene/substituted styrene copolymers PHILLIPS PETROLEUM CO 21 April 1972 [23 April 1971] 18714/72 Heading C3P Rubbery random copolymers of a conjugated diene with a substituted styrene of formula in which R is a tertiary alkyl or tertiary cycloalkyl radical containing up to 12 carbons and n is 1-5, the weight ratio of diene : styrene compound being in the range 60 : 40 to 95 : 5, are prepared by solution polymerization in the presence of an initiator, e.g. n-butyl lithium, and a randomizing agent, e.g. THF or potassium t-amyloxide. Up to half of the substituted styrene may be replaced by unsubstituted styrene. Examples describe the preparation, in toluene solution and in the addition presence of SiCl 4 , of butadiene/t-butyl styrene copolymers and butadiene/styrene/t-butyl styrene terpolymers.
Patent GB-530608-A (GB)
Title: Improvements in and relating to curtain rails and runners
IPC: A47H13/12
Filed: 1939-06-28
Abstract: 530,608. Curtain rails. BORTON, A. F. June 28, 1939, No. 18858. [Class 52 (v)] The edges c of the slot in a curtain rail are bulbous to provide line contact for the runner. This is of the double wheel type in which the curtain hook f can move freely; the diameter of the wheels d and shank e is such that the runnel can touch either track a<SP>1</SP>. The steps in the rail provide ledges for the draw cords and on the outside shoulders for fixing brackets.
Patent GB-868688-A (GB)
Title: Improvements in or relating to conveying and mixing devices
IPC: B01F7/00
Filed: 1958-06-13
Abstract: 868,688. Mixing machines. NAUTA, C. J. June 13, 1958 [June 25, 1957], No. 18923/58. Class 86 [Also in Group XXIV] Mixing apparatus similar to that described in Specification 599,900 comprises a conical chamber 1 provided with two mixing screws connected by a coupling 10 such that material being mixed is transported uninterruptedly from one screw to the other. A hollow shaft 3 rotatably mounted in the base of the chamber carries a mixing screw 4 and a shaft 6 arranged parallel to the conical wall of the chamber carries a mixing screw 7 connected to the screw 4 by the coupling 10 and by hinges 11, 12. A driving shaft 8 mounted at the top of the chamber has a crank arm 9 rotatably supporting the shaft 6, so that the shaft 6 describes an orbit around the shaft 8. The lower edge of the screw 4 is preferably a scraper blade moving over the base 2. Mounted on the shaft 3 is a pulley to take the drive to rotate the screws. Alternatively the screws may be rotated by connecting shaft 6 to an electric motor, which may be mounted on the arm 9. Homogenizing means 13 is mounted on a hollow supply shaft 15 rotatably mounted in the shaft 3 and provided with a pulley 16 connected to an electric motor (not shown). The head 14 of the shaft 15 is used as a spray.
Patent GB-510635-A (GB)
Title: Improvements in or relating to light metal alloys
IPC: C22C21/12
Filed: 1938-06-27
Abstract: 510,635. Alloys; annealing. HEINKEL, E. June 27, 1938, No. 19017. Convention date, June 28, 1937. [Classes 72 and 82 (i)] An age-hardenable alloy suitable for rivets, strips, sheets, and other parts consists of aluminium with 1-2.9 per cent. of copper, 1-3 per cent. of magnesium, less than 1.2 per cent. of silicon, less than 1.2 per cent. of manganese, and less than 0.5 per cent. of iron and titanium. The copper content may be within 20 per cent. of the difference between the magnesium content and 4 per cent. Parts made of the alloy are heated at about 500‹C., quenched, and age-hardened. According to the Specification as open to inspection under Sect. 91, the range of copper extends to 3 per cent. This subject-matter does not appear in the Specification as accepted.
Patent GB-1399191-A (GB)
Title: Plastics materials
IPC: C08L27/00
Filed: 1973-04-19
Abstract: 1399191 Non-slip coatings DYCEM PLASTICS LTD 19 April 1973 19051/73 Heading B2E [Also in Division C3] Non-slip coatings or articles are obtained by applying a composition comprising 25 to 45% of polyvinyl chloride and 55 to 75% of a plasticiser such as di-(2-ethylhexyl) phthalate or a propylene glycol/adipic acid copolymer. A sheet or web, for example of blotting paper or cotton net or a non-woven fabric of viscose rayon fibre and a synthetic resin binder, is dried by heating, passed through a bath of the composition and then heated to cure the polyvinyl chloride. Other articles, for example a steel tray, may be coated with the composition.
Patent GB-154662-A (GB)
Title: Improvements in and relating to air or gas guns, rifles, or the like for military orsporting purposes
IPC: F41B11/55
Filed: 1919-08-01
Abstract: 154,662. Suttie, G. D. Grant-. Aug. 1, 1919. Machine guns.-Relates to pneumatic guns of the kind having a reservoir for compressed air or gas and a handactuated valve controlling the passage of the gas to the barrel. According to the invention, the propelling gas, as it expels the bullet, operates mechanism for cutting off the gas supply and for reloading a bullet into the barrel. The automatic gun shown has a reciprocating breech-bolt a<2> for loading bullets from a magazine d. The compressed gas passes in a substantially straight path from the reservoir to the barrel through a valve f, tube b<2>, and passage b<1> in the breech-bolt a<2> The valve f is opened by a trigger f<1> and is closed automatically by the gas-pressure in the barrel acting on a piston e<2>. The valve f consists of a rotary plug having two ratchet-wheels, engaged respectively by pawls on the trigger f<1> and on a lever e<5> operated by a link e<4> from the piston rod e<3>. The breech-bolt a<2> is locked by a lever h<1> and is unlocked and retracted by the piston rod e<3> after a suitable lost motion.
Patent GB-238867-A (GB)
Title: A method of preparing tea and a machine for cutting the same
IPC: A23F3/12
Filed: 1925-07-27
Abstract: 238,867. Jeneson, K. F. F. J. Aug. 22, 1924, [Convention date]. Tea, cutting.-Tea is cut immediately after withering and is then further treated, as by rolling, fermenting, drying, and sorting. The cutting machine may consist of a cylindrical drum 1 into which the tea is fed through an aperture 6. The drum has a closed end 4, and at the other end is formed with a cone-shaped portion 3, the lowermost part of which is in line with the bottom of the drum. The tea is forced out of an aperture 5 in portion 3 by a screw 7 which is driven from a shaft 11 on which is mounted, adjacent to aperture 5, a wheel 15 having one or more cutting knives 16 secured to the spokes and acting also as fly-wheel. The length to which the tea is cut can be varied by varying the number of knives.
Patent GB-117218-A (GB)
Title: Improvements in or connected with Belt Shifting Gear.
Inventor: PROKOFIEW GEORGE
IPC: F16H7/22
Filed: 1917-12-27
Abstract: 117,218. Prokofiew, G. Dec. 27, 1917. Operating belt forks.-A belt fork is operated in both directions by a single cord connected to a carriage F sliding along a bar E fixed to a T-shaped lever C, the short arm of which carries a pin D<1> and block B<3> moving in a groove between two projections B<1>, B<2> on a bar B carrying the belt forks B<3>, B<4>. To vary the throw of the fork, the pin D' can be adjusted along the lever C and is fixed by a screw D<2>. The carriage F consists of two plates connected together by rivets F<2>, F<3> which engage in recesses E<2> at the ends of the bar E to retain the carriage in its extreme positions. When the cord is pulled, the lever is rocked about its pivot until its end encounters a stop A<4> or A<5>, and the carriage F is then pulled to the opposite end of the bar E by a spring F<7>. Curved stops A<6>, A<7> engaging a projecting pin F<5> prevent the carriage from sliding prematurely. In a modification, the device is inverted and is operated by a pedal, the cord F<10> passing over a guide-pulley.
Patent GB-516551-A (GB)
Title: Improvements in electron discharge devices
IPC: H01J21/14
Filed: 1938-06-29
Abstract: 516,551. Thermionic valves. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 29, 1938, Nos. 19283 and 19284. Convention dates, June 29, 1937, and Jan. 29, 1938. [Class 39 (i)] A discharge valve is provided with at least three grids the apertures in which register substantially with each other ; the grid nearest the cathode is at cathode potential or slightly negative thereto and may also serve as a control electrode ; of the other grids one is at a high positive potential and the other at a somewhat lower potential. Arrangements of such grids for ensuring that practically all the electrons from the cathode reach the anode and secondary electrons are intercepted are discussed. The cathode emissive surface is preferably formed in discontinuous portions registering substantially with the apertures in the grids. Fig. 9 shows a section of such a valve. The cathode is formed of a number of rectangular tubes 26 with two faces 27 emissive and the other faces strengthened by plates projecting to form flanges 28 which concentrate the electrons on the. openings formed in the grid 29. The grid 29 is secured to and spaced from the grids 31, 33 by insulating bolts and insulating tubes and washers 40, 41, 41<1>. The ends of the grids are enclosed in screens 42 and the whole is surrounded by the anode 44. The electrode system is secured by lugs above and below to mica spacers and the whole is carried by rods supported in ceramic blocks. An alternative form of cathode consists of two channelled plates, with slots between the channels secured together to form tubes containing the heating elements and with emissive surfaces. Fig. 11 shows a construction of grid consisting of a plate with a turned-over lower edge 74, and slots 71 extending down to the turned over portion, to lessen deformation due to unequal expansion. The grids may comprise transverse elements, such as wires secured across the slots forming the grid apertures, and several forms of such grids are described.
Patent GB-1461417-A (GB)
Title: Gaseous flux laser generator
IPC: H01S3/097
Filed: 1974-05-02
Abstract: 1461417 Lasers COMPAGNIE GENERALE D'ELECTRICITE 2 May 1974 [3 May 1973] 19422/74 Heading H1C A gas active medium is injected through a nozzle 7 into an end of an elongate enclosure 1 partially sealed at its opposite end by an apertured plate 2, the gas being pre-ionized by an auxiliary gas discharge between electrodes 8, 9 or 10, 11 positioned adjacent the nozzle before passing into a main discharge region between electrodes 12, 13 where lasing takes place. An optical resonator formed by mirrors 17 is orthogonal to the path of the main discharge between electrodes 12 and 13 and is backed by an enclosure window 18 through which optical radiation emerges. The injected gas may be a mixture of CO 2 , N and He, but alternatively only a single gas N or He may be injected which merges with the remaining constituents of the mixture within the enclosure. Gas injection takes place at supersonic speed and the gas follows a turbulence path 19. Pulse operation is used, the auxiliary electrodes being electrically pulsed in advance of the main electrode energization.
Patent GB-741015-A (GB)
Title: Improvements in and relating to oscillatory drives more particularly for small refrigerating machines
IPC: H02K33/18
Filed: 1953-07-14
Abstract: 741,015. Reciprocating electric motors. DOLZ, H. July 14, 1953 [July 26, 1952], No. 19472/53. Class 35. [Also. in Group XXVIII] In a reciprocating motor driving a refrigerator pump, the effective capacity in the circuit produced by the inertia of the moving parts is such as to cause resonance with the natural inductance of the electromagnetic winding, so that little or no spring is required. The device may be adjusted to resonance by adjustment of the spring or of a condenser or choke in the circuit. In a practical embodiment. Fig. 4, the coil 1 which is fed with current through coiled conductors 7 reciprocates between the annular poles 19, 22 of a permanent magnet 25. The sliding rod 16, which carries the pump piston 2 and the driving coil, is guided in a sleeve 46, e.g. of graphite, and carries inside the coil, a return spring 12 if one is used. The magnet pole core may be recessed at 24 and also radially slotted to reduce eddy-current losses. Alternative shapes of magnet are shown in Figs. 10 and 11. The pumped fluid enters at tube 45 and passes through the working gap to cool the coil. Further cooling may be achieved by putting non- magnetic conducting rings, e.g. of copper or aluminium around the moving coil at either end of the air-gap. The end clearance of the piston may be adjusted by means of plug 33 in the end of the cylinder. If desired, a compressor may be fitted at each end of the rod 16 or two independent units working towards each other in a common cylinder may be used. Speed reducing levers may be inserted between the load and the driving coil, or the load may be attached to a tapped spring.
Patent GB-831895-A (GB)
Title: A remote control unit for television receivers
IPC: H03J9/00
Filed: 1957-06-20
Abstract: 831,895. Assemblies of components. CUTTRISS, L. G. Aug. 30, 1957 [June 20, 1957], No. 19485/57. Class 37. [Also in Group XL (c)] A television remote control unit comprises a variable parallel resonant circuit housed in a container and connected between two coaxial connectors for connection in series with the feeder of a television receiver. As shown, a parallel resonant circuit consists of a variable capacitor 4 and an inductor 14 contained in an insulating tube 1 and connected in series with the centre conductor of coaxial sockets 15, 16. The unit is connected in series with the feeder so that the brightness and/or sound volume in a television receiver may be remotely controlled. Alternatively a variable inductor and fixed capacitor may be used. Reference is made in the Provisional Specification to a coaxial line terminated in a series-tuned circuit and connected in series with centre conductor of the feeder.
Patent GB-1392872-A (GB)
Title: Comminuting apparatus
IPC: B02C18/18
Filed: 1972-04-27
Abstract: 1392872 Comminuting apparatus CONDUX-WERK HERBERT A MERGES KG 27 April 1972 [27 April 1971] 19569/72 Heading B2A  Comminuting apparatus e.g. for breaking up strip, rod or bar material into granules comprises a rotary shaft carrying stepped cutting blades, blades secured by screws 8. The blades each have an arcuate face 6 of the same radius as the cutting circle 7, and formed at an angle α of about 80‹, and each cutting edge 4 cooperates with one or more fixed blades (not shown). The cutting edge of each blade overlaps the back edge of the preceding blade in the cutting direction.
Patent GB-651036-A (GB)
Title: Improvements in and relating to conveyors adapted for use in supplying printing plates to rotary printing presses
IPC: B41D5/00
Filed: 1948-07-23
Abstract: 651,036. Roller conveyers for stereo plates. DAILY MIRROR NEWSPAPERS, Ltd., GIBSON, W., and BULL, G. S. July 23, 1948, No. 19731. [Class 78 (i)] A group (e.g. four) of printing plates, each to be delivered to a different receiving station, is placed in staggered or echelon formation, one behind and to the side of the other, on a wide roller conveyer 3 so that the plates overlap (see Fig. 4) and guiding rails 7 are fixed longitudinally of the conveyer, which is preferably sloping. At the first junction the roller conveyer is split into two banks of narrow rollers 5, 6 so that the first plate (on the extreme left) is wholly supported by rollers 6 and the rest are supported partially by rollers 6 and partially by rollers 5. The first plate therefore descends down to the first station supported on rollers 6 and guided by its individual pair of guides 7; there being provided skid-plates 9 for supporting the left side of the three remaining plates and the skid-plates having the gaps shown to permit the first plate to descend down the rollers 6. The three plates pass on to wide rollers 11 and the second and third plates are conveyed similarly on rails to the second and third stations and the fourth plate is conveyed on the final set of rollers direct to the last station. The rollers may be free-running or all or in part driven or braked.