baber/WOPTO huggingface dataset:
Patent GB-852018-A (GB)
Title: Improvements in or relating to measuring devices
IPC: G01B3/44
Filed: 1958-06-20
Abstract: 852,018. Gauging departure from standard form. VYZKUMNY USTAV PRO VALIVA LOZISKA V BRNE. June 20, 1958 [July 18, 1957], No. 19913/58. Class 106 (2). A dimension-measuring device is provided with adjustable screw contacts 6, 7, 11, 12, and two or more levers 1, 9, one lever 1 being actuated by a feeler 2 and operating a signal when the dimension tolerance of a workpiece 13 has been exceeded and acting on the other lever or levers 9 by means of a friction clutch 8, the other lever or levers 9 operating a signal when the permitted tolerance of the shape deviation (D - d) has been exceeded. As shown, the feeler 2 acts on a spring-loaded lever 1 moving between adjustable contacts 6, 7, electric currents being set up if the maximum and minimum diameters D, d of the rotating workpiece 13 are too high or too low respectively. A second lever 9 pivoted on the same axis as the lever 1 is connected thereto by a friction clutch 8. Thus as the feeler 2 rises, the lever 9 pivots clockwise on to an adjustable limit screw 11. Once the greatest diameter of the workpiece has passed under the feeler 2, it begins to drop and the lever 9 moves anti-clockwise, making an electric circuit through an adjustable contact 12 if the difference between the diameters (D - d) exceeds the permitted tolerance.
Patent GB-147889-A (GB)
Title: Improvements in self-acting chucks
IPC: B23B31/12
Filed: 1920-07-09
Abstract: 147,889. Kupke, F. W. June 18, 1919, [Convention date]. Chucks.-A bevel-closing drill chuck comprises jaws D engaging notches in a jaw holder C and sliding in grooves in a screwed guide-member E, which is locked on to a sleeve G by a screw F. When the sleeve is rotated by hand, the guide member is screwed into the chuck body to close the jaws, the grip being automatically tightened by contact of the drill with the work.
Patent GB-910010-A (GB)
Title: Improvements in rotors for rotorcraft
IPC: B64C27/54
Filed: 1960-06-07
Abstract: 910,010. Helicopter rotors. BOLKOW, L. [trading as BOLKOW ENTWICKLUNGEN KOMM.-GES.]. June 7, 1960 [June 12, 1959], No. 19959/60. Class 4. In a rotorcraft having a single blade rotor, a ball-and-socket joint connects rotor blade 1 to the rotor shaft 2, and a linkage, serving to adjust the blade pitch angle, transmits the torque of shaft 2 to blade 1. Cup-shaped shells, mounted at the root end 24 of the blade, enclose a ball 5 bolted to the end 6 of the hollow shaft 2 to which is fixed a bearing fork 7. A stirrup 10, pivoted to fork 7 by pin 11 and to a link 14, which is connected by a ball-and-socket joint 13 to a horn 15 of the blade, may be adjusted by means of a control rod 18 acting through pins 19 to control the pitch of the blade. A weight 23 is mounted on an arm 22 fixed to an extension 21 of the blade root 24. The mass of weight 23 is so chosen that together with the unbalance produced by the control linkage, it results in a force passing through the axis of rotation of the rotor and having the same magnitude as but oppositely directed to the resultant drag of the rotor blade at any time.
Patent GB-432147-A (GB)
Title: Improvements relating to inverted incandescent gas burners for lighting purposes
IPC: F23D14/66
Filed: 1934-07-07
Abstract: 432,147. Incandescent gas burners. DAVIDSON, T. E., 37, Forster Street, and SMITH, F., 121, Herrington Street, both in Sunderland. July 7, 1934, No. 20017. [Class 75 (i)] The superheating chamber a of an inverted burner is provided with a hollow internal baffle j of domed or conical shape supported by feet n with its apex adjacent the outlet of the mixing-tube. The baffle may be formed with a central upstanding projection k or k<1>, or a dimple m, and with radial or circular corrugations or ribs. The cover e of the chamber a is preferably slightly domed and the floor slightly convex and both may be corrugated. The cover e and the baffle may be made of copper and the body of the chamber of delta metal, the side wall being flanged over, and soldered to, the rim of the cover. The chamber may be provided with a false floor or lining of metal, fixed immediately above the floor f, and may be coated with anti-corrosive paint. In the case of a multi-nozzle burner, the baffle is cut away at the periphery in the way of the nozzles to form feet between the cut-away portions.
Patent GB-710235-A (GB)
Title: Printed electric circuits and electric circuit components
IPC: H05K3/20
Filed: 1952-08-08
Abstract: 710,235. Spark discharge apparatus. EISLER, P., and HAUSER, E. July 16, 1953 [Aug. 8, 1952], No. 20054/52. Class 39(1). [Also in Groups XXII and XXXVI] A printed circuit or circuit component is made by removing unwanted parts of the material from which the circuit or component is to be formed by an electric spark erosion process which comprises bringing an electrode (cathode) into close proximity to the substance to be eroded (anode) while both are immersed in a dielectric liquid, and passing a rapid succession of D.C. pulses between the cathode and anode to produce a spark discharge which dislodges minute portions of the anode which are carried away by the liquid. The anode 10 may comprise a conductive block 11 carrying a metal foil layer 12. The lower surface of the cathode 13 carries a relief negative image 15 of the circuit, and both cathode and anode are immersed in a dielectric liquid 20. The cathode is advanced towards the anode until sparking occurs between the projecting portions 15 and the adjacent areas of the anode, causing the foil in those areas to be eroded and thus leaving a conductive pattern forming the circuit on the anode. Alternatively a plain cathode may be used, a patterned layer of insulating material, which alters the breakdown value of the gap in the areas which are to be removed from that in the areas which are to remain, being interposed between the cathode and the anode. The cathode may be in the form of a roller which may revolve about a stationary axis while the anode is moved, or which may move over the stationary anode. The method may be adapted to the erosion of metal foils to reduce or to correct inequalities in their thickness. The cathode in this case is a roller immersed in dielectric liquid and the anode a strip of metal foil moving through the liquid. The resistance of the foil between two fixed points is continuously measured by an ohm meter, any variations in thickness causing a variation in the resistance reading. The ohm meter may be connected to servo mechanisms so that such variation is compensated by varying the size of the spark gap.
Patent GB-586791-A (GB)
Title: Improvement in structural metalwork load-bearing members
IPC: E04C3/04
Filed: 1943-12-03
Abstract: 586,791. Structural metalwork. FISCHER, H. C., and HIGGINS, A. H. W. Dec. 3, 1943, No. 20246. Convention date, Dec. 3, 1942. Addition to 578,411. [Class 20 (ii)] The invention claimed in the parent Specification is modified by forming in the webs of both flanged elements hollow ribs and alternating grooves, the ribs on the two web portions abutting so that the complementary grooves together form the passages into which nails &c. may be driven. The grooves in each web may thus be made shallower, so that the attenuation of the strip is lessened. Fig. 4 shows the use of two single-flanged and grooved strips in combination with a heavy channel-iron member 40, to which the flange 66 of one strip 60 is welded.
Patent GB-790070-A (GB)
Title: Improvements in or relating to the emulsion polymerisation of olefinically unsaturated compounds
Inventor: MAXWELL JAMES
IPC: C08F220/14
Filed: 1955-07-13
Abstract: A monomer mixture containing from 50 to 72 per cent of methyl methacrylate and correspondingly 50 to 28 per cent of butadiene-1,3 is polymerized in the presence of a continuous aqueous phase containing initially at least 0.05 per cent of an ionic emulsifying agent based on the total weight of monomers, and a non-ionic emulsifying agent is added when at least 30 per cent of the monomer mixture has been converted to copolymer, the total amounts of the emulsifying agents used being not less than 2.5 per cent and not more than 8 per cent by weight based on the weight of the monomer mixture, the ratio of the total weight of the non-ionic to the ionic emulsifier being at least 0.5 to 1.  Ionic emulsifiers specified are sodium oleate, palmitate and stearate, sodium lauryl, oleyl and cetyl sulphates, the sodium salt of sulphated higher secondary alcohols, sodium dodecyl benzene sulphonate, sodium sulphonated castor oil, and the sodium salt of sulphated or sulphonated methyl oleate; non-ionic emulsifiers specified are the condensation products of ethylene oxide with dodecyl alcohol, octyl cresol and fatty acids.  Polymerization is preferably carried out in the presence of a catalyst, e.g. hydrogen peroxide, potassium persulphate or a redox system consisting of an organic peroxide or hydroperoxide together with an activator such as a ferrous sulphate/potassium pyrophosphate complex with, if desired, a sugar.  Polymerization may be carried out in the presence of a modifier such as C6-C18 mercaptans, e.g. normal and tertiary dodecyl mercaptans, dialkyl xanthogen disulphides, di(benzoic acid ester) tetrasulphides, tolyldisulphide and tolyltrisulphide.  The aqueous phase may contain an alkali metal salt or alkali to reduce the viscosity of the final latex, e.g. potassium and sodium chlorides and potassium hydroxide, the pH of the reaction mixture preferably lying between 6 and 10.  The latices are used as paints in admixture with pigments such as titanium dioxide, lithopone, ochre, iron oxide, zinc oxide, sienna, phthalocyanine pigments, china clay, barytes, blanc fixe and Paris white, sequestering agents such as sodium pyrophosphate or hexametaphosphate, and ammoniated casein solution. Specifications 745,927 and 749,719 are referred to.
Patent GB-1466229-A (GB)
Title: Rotary die cutter
IPC: B21B27/02
Filed: 1975-05-14
Abstract: 1466229 Cutting-out apparatus LAMSON INDUSTRIES Ltd 14 May 1975 [16 July 1974] 20355/75 Heading B4B A rotary die cutting apparatus for cutting web material comprises rotatably mounted die and anvil cylinders 19, 22 having mating bearer plates 16a<SP>1</SP>, 16b<SP>1</SP> and 17a<SP>1</SP>, 17b<SP>1</SP> for maintaining the cylinders a fixed distance 23 apart during rotation, an anvil plate 21 removably secured to the periphery of the anvil cylinder such that by selecting plates of suitable thickness, die cutting means 18 on the die cylinder may either partly or, completely cut through the material. The die cutting means are provided on a plate 18 attached to the die cylinder. The cylinders 19, 22 are made of magnetized material and the plates 18, 21 of a ferromagnetic material so that they can be secured magnetically to the respective cylinders.
Patent GB-597073-A (GB)
Title: Improvements in or relating to locking means for cycles and similar vehicles
IPC: E05B37/02
Filed: 1945-08-09
Abstract: 597,073. Cycle locks. GRUNWALD, R. Aug. 9, 1945, No. 20417. [Class 79 (iii)] [Also in Group XXV] A cycle lock comprises a housing A for a permutation lock having a pin F with a longitudinal slot G and a head C, the pin F engaging between the wheel spokes when in locking position, the upper surface A' of the lock housing being recessed to receive the fork or stay of the cycle, to which the lock is secured by a saddle D fastened by two screws E whose heads are covered by the wheels B after assembly; each wheel B has a notched flange engaged by a spring to prevent accidental rotation. The springs; preferably, consist of fingers integral with a plate K. Fig. 3, which is held in position by the two screws E. Complete withdrawal of the pin F is prevented by providing a spring clip H or other stop thereon.
Patent GB-247843-A (GB)
Title: Electro-telephonic sound box
IPC: H04R11/00
Filed: 1925-08-14
Abstract: 247,843. Robeck, H., and Fein-Maschinenbau-Ges. Aug. 14, 1925. Telephones.-In an electrotelephonic sound box of the kind in which the stylus bar is connected to an armature operated by electromagnets in a telephone circuit, each of the magnet systems for the two stationary poles for operating the armature is so mounted as to ensure its correct position in relation to the armature. The stylus bar 3 is connected to a bridge-piece 4 which is spring-held to pivot about contact points on the casing 1 and carries the armature 7. Laminated horse-shoe magnets 12 and laminated pole-pieces 9, 10 carrying the coils 20 are mounted on carriers, Fig. 7, which have horse-shoe-shaped webs 11 and angular lugs 13 which are screwed to corresponding faces 14 on the casing 1. The lugs 13 and faces 14 are ground off to ensure correct positioning of the pole-pieces 9, 10 in relation to the armature 7 and the two carriers are held in correctly spaced relation by spacing strips. The armature 7 may, in known manner, be angularly adjusted by a rod 21 and eccentric 23, 24.
Patent GB-1507547-A (GB)
Title: Electro-explosive igniters
IPC: F42B3/14
Filed: 1975-05-14
Abstract: 1507547 Electro-explosive igniters DEFENCE SECRETARY OF STATE FOR 29 April 1976 [14 May 1975] 20469/75 Heading F3A An electric igniter comprises two initiating electrodes 1, 3 separated by a layer 2 of pyrotechnic mixture consisting of metal particles intimately and uniformly intermixed with particles of a dielectric material and the mixture including particles of an agent capable of oxidizing the metal particles; the layer has an electrical resistance characteristic such that the density of current flow through the layer resulting from an application of a potential difference across the electrodes 1, 3 is sufficient to initiate an exothermic reaction between the particles of the metal and of the oxidizing agent only when the potential difference is sufficient to cause dielectric breakdown of the layer. The dielectric material itself may be the oxidizing agent, and may be a metal oxide, e.g. cupric oxide, the metal being aluminium. A specific weight ratio is quoted. End 8 may be thinner than wall 1 so that it ruptures preferentially. Grist sizes and mixture preparation are described in detail. The device is immune to stray radio-frequency signals of quoted power. An attachable further capsule contains a detonating charge, Fig. 2 (not shown).
Patent GB-279793-A (GB)
Title: Improvements in rotary engines and pumps
IPC: F04C2/10
Filed: 1927-08-03
Abstract: 279,793. Tuthill, J. B., (Assignee of Wilsey, I. H.). Oct. 30, 1926, [Convention date]. Movable-abutment type; packing abutments: regulating motors and pumps: reversing.-A rotary engine or pump of the internally meshing gear type is provided with a pair of reciprocably mounted packing members 14, 15 bearing on the cuter gear 28 so as to separate inlet and discharge chambers 16, 17 in the casing which contains the gears. The packing members 14, 15 have vents 48 to admit the pressure of the fluid to their rear surfaces and move against the action of springs 43 to permit the passage of the liquid film on the gear 28 or of solid particles if the vents 48 are open to the discharge chamber and the packing members therefore approximately in balance, or to relieve excessive pressure if the vents are open to the inlet chamber. The direction or the volume of flow may be varied by adjusting the position of the inner gear 34 which for this purpose is mounted, together with the crescent shaped filling block 36, on a plate which is angularly adjustable in the casing.
Patent GB-462586-A (GB)
Title: Improvements in means for affixing flags on smooth surfaces such as parts of motor vehicles
IPC: B60R13/00
Filed: 1936-10-17
Abstract: 462,586. Flag posts. FOLDS, O., and FOLDS, J. C., (trading as ARMSTRONG & CO., G.). Oct. 17, 1936, No. 20495. [Class 20 (i)] [Also in Groups XV and XXV] Means for attaching a flag to a smooth surface such as part of a vehicle comprises a stem, rod, or stiff wire B carrying the flag A and having a knob b at one end and a screw-thread bl at the other end engaging in a vertical hole in a boss c on a rubber suction cup C which adheres to the smooth surface.
Patent GB-652537-A (GB)
Title: Lathe
IPC: B23B17/00
Filed: 1948-08-03
Abstract: 652,537. Lathes. FISCHER AKT.-GES., G. Aug. 3, 1948, No. 20509. Convention date, March 24. [Class 83 (iii)] A lathe having a hollow bed and superimposed slideways to take a saddle and a tailstock, has.the headstock rigidly secured to the bed at the level of the spindle axis, but, has limited movement for expansion relative to the bed at the other points where it is secured thereto. The hollow bed 2 has an upper slideway along which the tailstock 3, Fig. 1, is axially adjustable and a guideway 8 along which the saddle 5 is moved by rack-andpinion gearing through a feed-shaft driven from the headstock 1. A tool-slide 6 is mounted obliquely on the saddle and is fed by fluid means under control of copying mechanism including a model or template 10. The headstock 1, Fig. 3, is rigidly secured by dowel pins 48 at the level of the machine spindle 47, but, is secured to the bed 2 by bolts 49, 50, at other points so that the headstock may have limited movement relative to the bed under expansion. An airspace 51 is provided between the vertical securing faces and a further air space 52 or insulating material is provided between the lower face of the headstock and the base 14. The feed gearing for traversing the saddle is driven from a fluted tubular feed-shaft.
Patent GB-1460623-A (GB)
Title: Apparatus for detecting suspended particles in liquids
IPC: G01N21/53
Filed: 1974-05-09
Abstract: 1460623 Detecting suspended particles in a liquid BRITISH PETROLEUM CO Ltd 9 April 1975 [9 May 1974] 20512/74 Heading G1A In a device for examining aircraft fuel for water or solid impurities such as disclosed in 1037096 an improved disperser (with no moving parts) is used. The disperser, Fig. 2, comprises an input pipe 30 supplying a small diameter tube 33 as shown, the outlet of the tube 33 being positioned near the centre of a circular plate 36. Thus liquid forced through tube 30 is dispersed and it passes out through holes 37 spaced around a disc 34 connected as shown to an outlet pipe 31. Liquid passing down a fuel line 7, Fig. 1 passes via a sample line 2 to the disperser 3 and thence to an air/vapour separator 4. The dispersed liquid is then separated into two lines 5 & 6, one line passing through a heater 7 to dissolve the suspended liquid and to create a reference. Each line is connected to an enclosure 9 or 12 which are illuminated by a common light source 18. Photo-electric devices 17, 19 measure the light absorption of each stream, the photo-electric devices outputs being compared to provide a measurement of the suspended liquid particles present. A further photocell 15 is positioned as shown to detect the scattered radiation and provide a measurement of the solid particles present.
Patent GB-1255455-A (GB)
Title: Improvements in controlled oxidation heat source
IPC: F24V30/00
Filed: 1970-04-29
Abstract: 1,255,455. Heat generating apparatus; heating by circulation of fluids; heating by chemical change. GENERAL ELECTRIC CO. 29 April, 1970 [1 May, 1969], No. 20525/70. Headings F4B, F4U and F4X. Heat generating apparatus involving the controlled oxidation of an oxidizable metal or boron or silicon comprises a reactor 12 lined with insulation 14 and containing the charge 18 of metal powder, wool, or sponge, a pressurized source 22 of fluid containing oxygen, a controller 24 for this fluid and an igniter 30. The controller is operated by the temperature of water issuing through pipe 26b from a heat exchanger 26. The igniter incorporates an electrode 32 sparking a mass 46 of readily oxidizable initiator material in a tube 44 surrounded by refractory 28. The igniting circuit includes a battery 40 connected in parallel with a capacitor 34 and switches 38, 42, said capacitor being also connected to the initiator material and the electrode 32. A relief valve 48 prevents build-up of explosive pressures in the reactor. The oxidizable metal is preferably Fe or Zr but may include Al, Mg, Th, Be, Ti, Mn and Cr. The invention may be applied to the heating of a space suit, a diver's suit or an enclosure such as a car, tent or small cabin.
Patent GB-1012663-A (GB)
Title: Method for the preparation of epoxy resins from anthracene
IPC: C08G59/24
Filed: 1962-05-29
Abstract: Dried alkali metal salts of anthracene-endo-succinic acid are reacted, e.g. by refluxing with epichlorohydrin and the resulting epoxide is hardened with a hardening agent, e.g. maleic or other acid anhydride.  Water absorption agents, e.g. synthetic zeolites may be added to the reaction mixture.  The potassium salt may be dehydrated by heating for 24 hours at 200 DEG  C. or for a shorter time at 250 DEG  C. in vacuo. Thiodiglycol is also mentioned in Example 1 as a hardening agent.ALSO:Di-glycidyl ester of anthracene-endo-succinic acid is prepared by reacting dried alkali metal salts of anthracene-endo-succinic acid with epichlorohydrin, if desired in presence of a water absorption agent, e.g. a synthetic zeolite. The potassium salt is preferred, is dried by heating, e.g. for 24 hours at 200 DEG  C., and may be refluxed with excess epichlorhydrin.
Patent GB-1479796-A (GB)
Title: Process for the production of hard vinyl chloride resin foams
IPC: C08J3/22
Filed: 1975-05-15
Abstract: 1479796 Foamed mixtures of vinyl chloride resins CENTRAL GLASS CO Ltd 15 May 1975 [23 May 1974 31 May 1974] 20633/75 Heading C3C A hard vinyl chloride resin foam is made by mixing (A) 100 parts by wt. of a composition comprising 100 parts by wt. of a first vinyl chloride resin, not more than 5 parts by wt. of a decomposable organic foaming agent and 0À1-10 parts by wt. of a stabilizer with (B) 1-30 parts by wt. of at least one uniformly blended mixture of 100 parts by wt. of a second vinyl chloride resin (which may be the same as of different from the first) and 1-100 parts by wt. of a decomposable organic foaming agent whose concentration in (B) is greater than that in (A), and then foaming the mixture. In the example (1) mixtures of (A) vinyl chloride resin, vinyl chloride/propylene copolymer, di- and tri-basic lead stearate, lead and calcium stearate, azodicarbonamide, 4,41 - oxybisbenzene sulphonyl hydrazide, acrylonitrile/styrene/butadiene copolymer and dioctyl phthalate were mixed with (B) another vinyl chloride resin, the above lead stearates, calcium stearate, dibutyltin maleate, dioctyl phthalate, chlorinated polyethylene, acrylic acid resin, methyl methacrylate or acrylonitrile/butadiene/styrene copolymers, azodicarbonamide and 4,4<SP>1</SP>-oxybisbenzenesulphonyl hydrazide and the blends were extruded to form foamed rods. Copolymers of vinyl chloride with vinyl acetate and/or ethylene, or with propylene may be used to form the foams.
Patent GB-277944-A (GB)
Title: An improved device for administering medicine to sheep and cattle
IPC: A61D7/00
Filed: 1927-08-05
Abstract: 277,944. Fulton, F. J. A. Sept. 23, 19'd8, [Convention date]. Spoons. - A spoon like device for administering medicine in the form of pellets or tablets to cattle and sheep comprises a discshaped head A recessed at C to receive the pellets and provided integrally with a long handle B. The device may be made of non-corrosive metal, celluloid or the like and has a flat base.
Patent GB-695078-A (GB)
Title: Improvements in fuel supply systems
IPC: F02M37/18
Filed: 1951-09-03
Abstract: 695,078. Machinery breaking pieces. GENERAL MOTORS CORPORATION. Sept. 3, 1951 [Sept. 25, 1950], No. 20694/51. Class 80 (iv). [Also in Group XXVI] Two gear pumps 20, 28 are driven by a common shaft 29, each through connections which shear if the relevant pump jams, the second pump continuing operation. A hollow shaft 65, for a driving gear 64, has internal splines which engage external splines on a shaft 73, one end of which is driven into a counterbore 74 in the shaft 29. A pin 76 couples the shafts. The pump 28 has a splined connection 82, 83 coupling its gear 77, integral with its shaft, to the shaft 29. These splines shear if the pump 28 jams, and the reduced portion of shaft 73 shears if the pump 20 jams.