baber/WOPTO huggingface dataset:
Patent GB-706733-A (GB)
Title: Improved gas filled electric discharge tube
IPC: H01J17/30
Filed: 1951-11-16
Abstract: 706,733. Thermionic valves. RADIO CORPORATION OF AMERICA. Nov. 16,1951 [Nov. 22,1950], No. 26947/51. Class 39(1) In a gas discharge device having a main cathode and anode between which the main load-bearing current passes, and having also an auxiliary cathode for producing an ionizing discharge, said ionizing discharge, and hence the plasma density, is controlled by a grid associated with and adjacent to the auxiliary cathode. The set of auxiliary electrodes comprise the cathode 16, semi-cylindrical wire grid 17, shield 19 and slotted anode 18. The set of high current carrying electrodes, i.e., the two main cathodes 12. 13, main anode 14 and accelerating grid 15, may be considered as a composite final anode for the ionizing discharge passing through the slot 20 in anode 18. A low potential trap for preventing ions from drifting back through slot 20 is established by maintaining screen 29 at a potential higher than auxiliary cathode 16 and lower than auxiliary anode 18. A second such trap is established by maintaining accelerating grid 15, at the same potential as main anode 14, while the cathodes 12, 13 have a slightly lower potential. The whole arrangement may be duplicated about a common auxiliary cathode to produce an embodiment suitable for push-pull operation. A satisfactory gas-filling is helium at 750 microns, although other gases and pressures may be used. Fig. 3 (not shown) gives a suitable circuit arrangement. Specification 706,722 is referred to.
Patent GB-533042-A (GB)
Title: Improvements relating to bedsteads
IPC: F16B12/54
Filed: 1939-10-02
Abstract: 533,042. Bedstead frames. HOSKINS & SEWELL, Ltd., and HOSKINS, H. R. Oct. 2, 1939, No. 27020. [Class 52 (ii)] The parts c which carry the mattress frame of an iron bedstead are swivelled on the end frames so that the member h supporting the mattress may be turned into the plane of the end member when the bedstead is dismantled The end frames may comprise upper and lower members a, b carrying spigot members f, g entering sockets in the member c which may carry a projection h entering a socket in the mattress support. Accidental removal of the members a, b may be prevented by friction or by screw cotter &c. and means such as bolts may be provided to prevent accidental separation of the end frames from the mattress frame.
Patent GB-1101545-A (GB)
Title: Pistol grip for photographic cameras
IPC: G03B13/02
Filed: 1966-06-17
Abstract: 1,101,545. Pistol grips for photographic cameras. MEOPTA, NARODNI PODNIK. June 17, 1966 [June 30, 1965], No.27064/66. Heading G2A. A pistol grip for use with a still or cine camera contains a reflecting roof prism 2 and a converging lens 3 which both co-operate with the view-finder system of the camera ( shown as a twin-lens reflex camera). The grip which may be detachably or permanently secured to the camera also carries a shutter release device 4.
Patent GB-827337-A (GB)
Title: Improvements in or relating to ingot reheating furnaces
Inventor: ZWICK GEORG JOSEF
IPC: B21J17/00
Filed: 1957-08-28
Abstract: 827,337. Skid rails for metal heating furnaces. STAHLUND WALZWERKE BASSELSTEIN/ANDERNACH A.G. Aug. 28, 1957, No. 27067/57. Class 51 (2). A skid rail installation for ingot reheating furnaces comprises rails 1 welded to watercooled tubes 2 mounted on spaced pillars 3 and tubular supports 4, and brick arches disposed longitudinally below the tubes 2 having flat tops 5 supporting refractory material 11, which is rammed against the sides of the rails and the tubes. Each brick arch comprises piers 6, and shaped bricks 7 engaged by a key brick 8, the bricks 7 and 8 being formed with recesses 9 spacing them from the tubes. The width 8 of the bricks 7 and 8 is at least twice the diameter d of the tubes. The refractory material 11 has a base of corundum or zirconium oxide with the addition of combustion residues, a useful mixture being:-corundum or zirconium oxide 60 parts, mullite 30 parts, tridymite 10 parts, combustion residues 15 parts.
Patent GB-644611-A (GB)
Title: Improvements in and relating to dynamic balancing machines
IPC: G01M1/04
Filed: 1947-10-08
Abstract: 644,611. Bearings. SCOPHONY, Ltd., and ADAMS, A. E. Oct. 8, 1947, No. 27081. [Class 12 (i)] [Also in Group XIX] In a dynamic balancing machine one bearing 1 is mounted in an aluminium &c. partcylindrical, cradle member comprising a rim 13 and central web 14, the latter engaging a groove 15 in the bearing. On each side of the cradle is a frame 3 connected by large pins 5. A steel tape 2 passes around the lower part of the rim 13, and is clamped at each end to the pins 5, whereby the cradle 13, 14 is suspended. Movement of the cradle in the direction of its central axis is limited by engagement of the tape with the frames 3. The opposite bearing may be similarly suspended.
Patent GB-843893-A (GB)
Title: Improvements in or relating to direction indicators for vehicles
IPC: B60Q1/38
Filed: 1958-08-22
Abstract: 843,893. Road traffic signals on vehicles. HIMMELBAUER, V. Aug. 22, 1958 [Aug. 29, 1957; April 18, 1958], No. 27108/58. Class 118 (2). A direction indicator is characterized in that an indicating means at the rear of the vehicle on one side at least can be energized independently of the front or lateral indicator. In the embodiments shown, the rear indicator has an additional lamp 14 connected to contact 12 on the direction indicator switch. When the movable contact 11 is switched to the contact 12, the rear indicator lamp 14 only is lit, and on further movement to the contact 9 the lamp 14 is extinguished, and the lamps 2 at the rear and 1 at the front are lit instead. Alternatively a single lamp may be used at the back, and the cable to the front lamp interrupted. Pilot lamps 7a, 8a and 12a are provided to indicate which indicators are in operation, the indicator 12a being, if desired, of a different colour from the other two.
Patent GB-714938-A (GB)
Title: Process for the preparation of tetrahydro-fluorenone
IPC: C07C51/60
Filed: 1951-11-20
Abstract: The invention comprises 1 : 2 : 3 : 4-tetrahydrofluorenone of the formula <FORM:0714938/IV (b)/1> and having a melting point of 81 DEG to 82 DEG  C.  This compound is obtained by reacting a 2-phenyl - 3 : 4 : 5 : 6 - tetrahydrobenzoic acid derivative of the formula <FORM:0714938/IV (b)/2> (wherein X represents -OH,halogen or an -OR group and R indicates an alkyl group with not more than 5 carbon atoms) with a condensing agent to cause ring closure to 1 : 2 : 3 : 4-tetrahydrofluorenone.  The starting material where X represents -OH is obtained by the process of Specification 674,177.  The corresponding acid bromide and chloride and methyl and ethyl esters are also specified.  As condensing agents are specified a polyphosphoric acid, anhydrous hydrofluoric acid, aluminium chloride and stannic chloride.  In examples, 1 : 2 : 3 : 4-tetrahydro fluorenone is prepared by (1) to (3) treating 2-phenyl 3 : 4 : 5 : 6-tetrahydrobenzoyl chloride with aluminium chloride and stannic chloride respectively; (4) treating the corresponding acid bromide similarly to (2); (5), (7) and (8) heating with polyphosphoric acid (obtained by adding phosphorus pentoxide to syrupy orthophosphoric acid) 2-phenyl-3 : 4 : 6 : 6-tetrahydrobenzoic acid and its methyl and ethyl esters respectively; (6) treating 2-phenyl 3 : 4 : 5 : 6-tetrahydrobenzoic acid with liquid hydrofluoric acid.  The product is identified as its 2 : 4-dinitrophenylhydrazone. 2-Phenyl 3 : 4 : 5 : 6-tetrahydrobenzoic acid is converted to its acid chloride by reaction with thionyl chloride, to its acid bromide by reaction with phosphorus tribromide, to its methyl ester by reaction with diazomethane, and to its ethyl ester by reaction with ethanol.
Patent GB-299601-A (GB)
Title: Improvements in and relating to warping mills for warping yarns
IPC: D02H13/16
Filed: 1927-10-14
Abstract: 299,601. Thornton, J. Oct. 14, 1927. Guiding and tensioning yarns in warp form, - In a warping mill, the ends E pass under a rod or tube B and over a stayed tube &c. A to the beam whereby the section marks formed during beaming are removed. The tubes &c. A, B are carried by adjustablymounted end plates A<1>, B<1>, the front tube &c. being stayed by means of intermediate adjustably-mounted stay-arms S and the rear one by attaching exterior flat or curved bars B<2>. The tubes &c. A, B are strengthened by rods R.
Patent GB-920603-A (GB)
Title: Improvements in grain refining of aluminum-silicon hypereutectic alloys
Inventor: BIELECKI EDWIN JOSEPH
IPC: C22C21/02
Filed: 1961-07-27
Abstract: An alkali metal fluophosphate complex for grain refining aluminium-silicon hypereutectic alloys (see Group II) is made by fusing an alkali metal or ammonium oxidic phosphorus compound with an alkali metal or ammonium bifluoride.  The alkali metal may be Li Na or K but the potassium salts are preferred as being less volatile. The mixture for fusing may contain 75-25% of the bifluoride.ALSO:A salt mixture for introducing phosphorus into aluminium-silicon hypereutectic alloys (i.e. more than 11.7% Si preferably 20-25%) comprises an oxidic phosphorus compound of an alkali metal or ammonia and an alkali metal or ammonium bifluoride.  The mixture can be added as such, or may be fused to form a fluophosphate complex and then added to the melt.  The bifluoride may comprise 75-25% of the mixture.  Diluent salts and aluminium phase refining agents such as alkali metal double fluorides, alkali metal halides, or alkaline earth metal fluorides in an amount equal to the total of the phosphorus compound plus the bifluoride.  The final grain refined alloy may contain 0.01-0.02% of phosphorus after addition of 0.5% of the mixture (based on the weight of molten alloy) at 800-900 DEG  C. with vigorous stirring.
Patent GB-878470-A (GB)
Title: Improvements in lock washers
Inventor: ZIEGLER ERNST
IPC: F16B39/24
Filed: 1958-08-26
Abstract: 878,470. Locking nuts &c. ARNOLD, T. Aug. 26, 1958 , No. 27327/58. Class 89(1). A lock washer comprises a cupped ring 1 of spring material with a central hole 4 and teeth 2 with sharp edges extending along at least one surface of the ring towards the outside edge 3. The teeth may extend radically, or obliquely or curving relative to a radius and may be cut-off at surfaces 5, 6. The ring may be frusto-conical or part-spherical.
Patent GB-279119-A (GB)
IPC: B65G47/68
Filed: 1927-10-15
Abstract: 279,119. Naamlooze Vennootschap Philips' Gloeilampenfabricken. Oct. 15, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Jigging conveyers. - Articles such as glass tubes are arranged in line and delivered to a shoot by a jigging conveyer. The articles 4 pass from a. receptacle 1, Fig. 1, down a shoot 3 to a jigging conveyer 5 which is concave in cross-section and formed with longitudinal grooves in its upper surface. The admission of the articles to the conveyer is controlled by a pivoted member 14 which is raised and lowered bv a cam 18. In another form, the articles are put into a cylindrical receptacle. Fig. 3, the bottom of which comprises a rotary disc 32 and an annular jigging trough 30. When the parts are in motion, the articles slide from the disc on to the trough and axe moved slowly towards the delivery end C through an aperture B of the receptacle. If a heap of articles forms at the aperture, it is dispersed by a lug 41 on the disc.
Patent GB-483229-A (GB)
Title: Improvements in or relating to d.c. transformers
IPC: H02M3/33
Filed: 1936-10-09
Abstract: 483,229. Valve amplifying circuits. GENERAL ELECTRIC CO., Ltd., and DUNHAM, C. R. Oct. 9, 1936, Nos. 27445/36 and 19767 /37. [Class 40 (v)] [Also in Group XXXV] A thermionic amplifier comprises a variablemu triode 10 whose grid circuit is supplied with constant A.C. through a transformer 14 and with the input D.C. to be amplified or relayed at terminals 1, 2, the output of modulated A.C. from a transformer 16 being rectified and smoothed. A rectifier 11 and battery 12 in the grid circuit are arranged so that the grid bias cannot exceed a predetermined maximum, excess voltages being byepassed by the rectifier. Specification 323,823, [Class 40 (v)], is referred to. Reference has been directed by the Comptrolller to Specifications 413,081 and 433,967, [both in Group XXXV].
Patent GB-1123949-A (GB)
Title: Process for reducing the mean molecular weight of oxymethylene polymers
Inventor: EIFERT WERNER
IPC: C08G2/00
Filed: 1967-06-14
Abstract: Oxymethylene polymers are treated to reduce their molecular weight by a process comprising treating the polymers with oxygen or oxygen-containing gases at 100 DEG  to 200 DEG  C. in the presence of dispersing agents and/or solvents for at least 1 minute and at a pressure of 1 to 20 atmospheres.  In the examples, acetylated polyformaldehyde and trioxan-ethylene oxide copolymers are treated with air or O2 while dispersed in cyclohexanol, paraffinic hydrocarbons or dissolved in a KOH/hexanol mixture or methylene diacetate.  In Example 1 the treated polymer is then mashed with 1,11 - bis - (2 - oxy - 3 - t - butyl - 5 - methylphenyl) -butane, an etherified ureaformaldehyde resin and aqueous ethyl alcohol.
Patent GB-871823-A (GB)
Title: Label-disposer for bottle-washing machines
IPC: B08B3/14
Filed: 1957-09-02
Abstract: 871,823. Travelling-band filters. USINES A. VANDERGEETEN. Sept. 2, 1957 [Sept. 15, 1956], No. 27549/57. Class 46. [Also in Group XXIII]. A label-disposing device for bottle-washing machines comprises an inclined sieve 2 or sieves, for removing labelcarrying liquid from the labels, associated with conveyer means, e.g. an endless belt 5, receiving the partlydried labels from the edge 4 of the sieve 2 or sieves to convey them towards detaching means. The liquid may act as a propellant for the labels in passing from sieve to belt. The detaching means may be a tube 16 feeding air and/or water under pressure on to the belt 5, on the side opposite to that on which the labels adhere, under the action of a fan 17, between two substantially-vertical portions 14, 15 of the belt, which may be of smooth mutuallyarticulated corrosion-resistant perforated plates and comprises a substantially-horizontal portion 5<SP>1</SP> along the edge 4 between rollers 6 and 6<SP>1</SP>. The belt has guide rollers 10-11, 12-13, the roller 10 driving.
Patent GB-1496740-A (GB)
Title: Gathering and clipping head for vacuum packaging machines
IPC: B65B51/00
Filed: 1975-06-30
Abstract: 1496740 Gathering and clipping bag necks W R GRACE & CO 24 June 1976 [30 June 1975] 27562/75 Heading B8C A head for gathering and clipping a bag neck in an evacuation chamber comprising opposed gathering members 32, 34 rotatable about a common hub 32a and provided with arcuate gathering surfaces 38, 71 which are convex towards the hub and overlap when the members 32, 34 are closed, means for guiding a supply of clips C to the centre of the hub, and a punch 36 for driving individual clips radially outwardly from the hub to be deformed around a gathered bag neck. The gathering members are rotated by struts 31 pivoted to link plates 27 which are pivoted in turn by cam rollers 25 on a yoke 23 moving in slots 26 in the plates. The pivot pins 29 mounting the link plates 27 are eccentrically disposed to permit adjustment of the gathering members relative to the punch. The punch 36 is also driven by the yoke and engages a clip after the gathering members have closed, the final movement of the yoke causing the rollers 25 to move along a there vertical disposed portion of the slots 26. The gathering member 34 comprises a plate on each side of the member 32 and a spacer block (52) bolted to the plates. The block (52) and the member 32 form a guide for the clips when the members are closed. A replaceable clipping die is mounted on the member 32 and has two side-by-side arcuate grooves to deform the two legs of the clip. A cutter, with a cutting edge 82, is rotated about the hub 32a, as the cam rollers 25 return down the vertically disposed portion of the slot 26, to cut off the bag end. When the gathering members start their retraction they cause the cutter to retract also. The retracted position of the gathering members and cutter is beneath the level of a bag feeding conveyer (4). A rotary, clip magazine has a plurality of chambers (166, Figs. 13 and 14, not shown) arranged parallel to the axis of the magazine. A piston (160) pushes the clips in each chamber in turn into the path of the clip punch 36 and against a reaction piston (163). The absence of pressure against the reaction piston causes it to move to instigate the withdrawal of the piston (160) out of the magazine. The final movement of the piston (160) pivots a bellcrank (170) which carries a pawl to rotate the magazine for the next chamber to be located. The reaction piston may be replaced by a pivoted arm (190, Fig. 16, not shown). A spring detent holds the magazine in successive positions. A linear magazine may replace the rotary one.
Patent GB-1433572-A (GB)
Title: Pigment pastes
IPC: C08G18/10
Filed: 1974-06-21
Abstract: 1433572 Pigment pastes BAYER AG 21 June 1974 [22 June 1973 1 Feb 1974] 27669/74 Heading C4A [Also in Division C3] A pigment paste contains 3-20% wt. of a polyester-polyurethane, as binder obtained by the reaction of a polyester-polyol of M.Wt. 500-3000 derived from either hexanediol and adipic acid and optionally neopentyl glycol, or from 1,4-butanediol and adipic acid, with isophoronediisocyanate or dicyclohexylmethane- 4,4<SP>1</SP>-diisocyanate subsequently chain lengthened with isophoronediamine, 3-70% wt. of a pigment, and 20-90% wt. of ethylene glycol monoalkyl ether and optionally up to 40% wt. of another solvent such as aromatic hydrocarbons, aliphatic alcohols, ketones and/or esters. The pigments may be inorganic or organic and preferably have a particle size of less than 2 microns. Thickeners and fillers such as Aerosils (Registered Trade Mark), bentonite or kaolin may be added. The pigment paste may be used to colour one component polyester-polyurethane textile coating compositions. In Examples 1-4 pigment pastes are prepared from a polyurethane prepared from a polyester derived from either hexanediol, neopentylglycol and adipic acid, or butanediol and adipic acid, isophoronediamine and isophoronediisocyanate, any one of the following pigments: titanium dioxide, surface oxidized carbon black, micronized iron oxide or copper phthalocyanine, and as solvent either an isobutanol / toluene / ethyleneglycol monoethylether mixture or an isopropanol/ toluene/ethyleneglycol monomethylether mixture. In Example 5 a textile coating composition is prepared from the above TiO 2  containing pigment paste, a polyurethane elastomer, dimethyl formamide and methylethylketone.
Patent GB-477640-A (GB)
Title: Improvements in or relating to web renewing mechanism
IPC: B65H19/18
Filed: 1936-10-12
Abstract: 477,640. Feeding webs. HOE & CO., Ltd., R. Oct. 12, 1936, No. 27707. Convention date, Oct. 11, 1935. [Class 100 (i)] In a web-renewing operation in which renewal is effected by deflecting the running web to bring it into contact with the periphery of a replacement roll, the running web and the periphery of the replacement roll are located at a predetermined distance from one another by positioning the replacement roll in a renewing position which is fixed independently of its diameter, and then varying the position of the running web in dependence on the diameter of the replacement roll. The Figure shows the position of the rolls when web renewal is about to be effected. The means for driving the reserve roll 18 comprises an endless belt 21 guided about pulleys 22, 23, 24, and tensioned by a spring 25 acting upon the belt through a lever 26 and the pulley 24. A fixed bracket 32 has pivotally mounted thereon a pair of arms 36 carrying a web deflecting brush 35, and a pair of arms 31 carrying a severing knife 33 located in a sheath 34 the nose of which forms a guide member for the running web 17 of the old roll 16. The arms 31, 36 are releasably held together by a catch member 37 which is automatically released to permit the arms 36 to move independently by an electrically operated catch 38. Projections 46 on the arms 31 engage wedge-shaped blocks 45 adapted to be moved vertically by means of a rack and pinion device operated by a feeler-roller 59 resting either directly on the periphery of the reserve roll 18 or on the endless belt 21 resting thereon. The spider support 11 for the rolls has one fixed position for each web-renewing operation, determined by a fixed switch 39 and lugs 42 on the spider, regardless of the diameter of the reserve roll 18, and consequently the roller 59 determines the positions of the arms 36, 31 and hence the position of the running web 17 relatively to the roll 18. In modifications, members rigid with the arms 31, and projecting above the pivot points of the latter, are engaged by linkwork-operated members controlled from the feeler-roller 59 to vary the position of the arms 31.
Patent GB-193098-A (GB)
Title: Service table for restaurants and the like
IPC: A47B31/02
Filed: 1921-10-19
Abstract: 193,098. Wiskemann, B. Oct. 19, 1921. Stoves combined with service tables.-A service table for restaurants &c. comprises a support on castors or wheels, a table top 5 with apertures for articles such as decanters 7, and heaters or cookers 9 and a receptacle below the table top for storing plates, culinary utensils &c. The top 5 is provided with a carving slab 6 and with a press 8.
Patent GB-1080169-A (GB)
Title: Improvements relating to linear accelerators
Inventor: CROWLEY-MILLING MICHAEL CROWLE
IPC: H05H9/02
Filed: 1963-07-12
Abstract: 1,080,169. Linear particle accelerators. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 23, 1964 [July 12, 1963], No. 27762/63. Heading H1D. In a linear accelerator of the travelling-wave type comprising a corrugated waveguide including an attenuating section at the output end, the attenuating section includes spaced irises which are either of a metal having good heat conductivity and a high permeability or are constituted by discs provided over a part only of their surfaces with coatings, one component, i.e. the disc or the coating, having a good heat conductivity while the other component is a metal of high permeability. The discs may comprise iron or low carbon steel and may be coated with copper. To secure uniform absorption of the r.f. power the radial width of the copper coatings may progressively decrease or the discs may be fitted at the centres with copper inserts progressively decreasing in radial width. The discs may be of copper or copper alloy and coated by electroplating, welding, brazing or spraying with iron, low carbon steel, nickel, chromium or stainless steel. Annular grooves may be provided on one or both sides of the disc to receive the coatings. The grooves are previously roughened by shot-blasting. The width and number of the grooves may be varied to equalize the power absorption. The disc spacing may also be varied. The discs may be clamped between copper rings, water cooling pipes being fixed to the outside of the copper rings.