baber/WOPTO huggingface dataset:
Patent GB-1205157-A (GB)
Title: The production of oxygen-containing heterocyclic compounds
Inventor: INGLIS HUGH STEWART
IPC: C07D319/06
Filed: 1968-08-29
Abstract: 1,205,157. Oxygen-containing heterocyclic compounds. IMPERIAL CHEMICAL INDUSTRIES Ltd. 17 July, 1969 [29 Aug., 1968], No. 41357/68. Heading C2C. Butadiene or a chloro or methyl derivative thereof is reacted with formaldehyde to form a major proportion of a 4-substituted metadioxane in the presence of a solvent and a catalyst comprising a salt of ametal from the second or third triad of Group VIII of the Periodic Table and a salt of copper of a metal from the first triad of Group VIII. The preferred catalysts are mixtures of PdCl 2  and CuCl 2  and of PdCl 2  and FeCl 3 . The process is preferably carried out in aqueous solution, but organic solvents, e.g. ethers, alcohols, aromatic hydrocarbons and amides may be used. Suitable starting materials are butadiene itself, chloroprene, isoprene and dimethyl butadiene. When butadiene is the starting material, the main product is 4-vinyl metadioxane with a small amount of 5,6-dihydro-2H-pyran.
Patent GB-1270882-A (GB)
Title: Disc brake assemblies, for example for rail vehicle wheels
IPC: F16D65/12
Filed: 1969-08-19
Abstract: 1,270,882. Disc brakes. KNORR-BREMSE G.m.b.H. 19 Aug., 1969 [20 Aug., 1968], No. 41429/69. Heading F2E. A disc brake assembly comprises a brake ring 11 for mounting coaxially alongside a wheel 1, the ring having axially extending lugs 9 positioned approximately centrally between the inner and outer radial limits of the ring and formed with radially extending bores 15 which lugs project towards the wheel when the assembly is in use, an intermediate ring 6 for mounting on the wheel so that respective radially-extending arms 8 provided on the ring project towards the lugs 9 in a gap between the brake ring and the wheel. The arms are so formed and arranged that, when the assembly is in use, each of the arms has a lateral surface which is in engagement with the brake ring from that one of the radial limits which is nearer to the ring 6 substantially up to the lugs in a plane that is perpendicular to the axis of the brake ring. Connecting pins 14 adapted to fit respectively in the bores 15 and project therefrom into the arms when the assembly is in use so that one side of the brake ring can be acted upon to effect braking of the wheel. As shown, two brake rings, which have cooling webs 18, are secured to the wheel by bolts 5, and auxiliary pins 16 secure the pins 14 against displacement. In modifications, (a) the ring 6 is shrunk on to the hub 2 of the wheel, and (b) the ring 6 is disposed adjacent the wheel rim 4.
Patent GB-983111-A (GB)
Title: Type action for hand-operated typewriters
IPC: B41J7/02
Filed: 1961-11-21
Abstract: 983,111. Typewriters. ING. C. OLIVETTI & C. S.p.A. Nov. 21, 1961 [Nov. 26, 19601, No. 41562/61. Heading B6F. In a hand - operated typewriter wherein the keys 4 are depressible in vertical planes perpendicular to the front of the machine and the type levers 9 move in radial planes about a common planar semi-circular pivot 10, an upwardly-directed pivoted arm 18 associated with each key lever 5 and lying in the same vertical plane is connected by a link 27 to a second arm 26 on a pivot 20 common to all the arms 26, the arm 26 being connected to its type lever by a link 22. The arms 26 which lie in the radial planes of the type-lever movements form parts of levers 19 and together with the arms 18 increase in length from the centre of the machine towards the ends, the ratio between the lengths remaining constant. The links 27 lie substantially in the lines of intersection 12, Fig. 1, between the radial planes and the corresponding key-lever planes and are all of the same length. The lines 12 lie on the surface of an imaginary cylinder 28, Fig. 2. The pivot 20 which is mounted in the type-lever basket 11 is coaxial with and in a plane parallel to the plane of the pivot 10; the plane of the pivot 20 bisects the angle of movement of the arms 26. The inner arms 21 of the levers 19 are all identical. As shown, the key-levers 5 are in three sets mounted respectively on three horizontal pivots 6, 7, 8, and the arrangement described provides for uniform depression of of the keys. Moreover, the various levers are acted upon by forces lying in the planes of the levers. In one modification, Fig. 3 (not shown), the pivot 20 lies in the same plane as the pivot 10 and in another arrangement, Fig. 4 (not shown), the planes of the pivots 10, 20 approach the horizontal as is usual in a portable typewriter. The basket 11 is movable parallel to itself for ease shift.
Patent GB-1401432-A (GB)
Title: Machines for producing sausages
IPC: A22C11/06
Filed: 1971-09-07
Abstract: 1401432 Sausage filling machines T GLEDHILL 31 Aug 1972 [7 Sept 1971] 41577/71 Heading A2B A sausage filling machine comprises a ram 14 in a cylinder 10, having an inlet for sausage meat (for instance the upper end of the cylinder covered by the sealing plate 36) and a nozzle outlet 52, 54 on one side of the ram and a water conduit 28 connected to the cylinder at the other side of the ram, so that water can act directly on the ram, which in turn acts directly on the sausage meat, to force the sausage meat out of the cylinder. The conduit 28 may be connected to the mains water supply, either direct or via one or more electric or other pumps. In operation, the ram is lowered by operating drain valve 34, sausage meat is introduced by removing plate 36, a tubular casing is placed over nozzle 54, and interconnected valves 32, 56 are simultaneously opened to allow the water pressure to force the meat through the nozzle. The ram 14 may consist of a wooden block 16 having leather seals 18 attached thereto.
Patent GB-1496516-A (GB)
Title: Fire resistant partition sections and method for forming such partition sections
IPC: E04B2/74
Filed: 1975-09-05
Abstract: 1496516 Partition panels RONEO VIC KERS PARTITIONS Ltd 5 Sept 1975 [25 Sept 1974] 41791/74 Headings E1B and E1W Double leaf partitioning units are formed of spaced panels each secured at its vertical margins to separate metal uprights with adjacent uprights connected together by thermoplastics bolts or rivets to provide a thermal break between the unit faces. Typically plaster boards 12 having metal facing sheets 11 are attached via the sheet ends 16 by clamps 15 to uprights 14 the limbs 14' of which are joined with interposed thermoplastics spacers 21 by means of nylon bolts 19 or nylon rivets 20 (Fig. 3 not shown). Each unit is preferably filled with mineral - wool and the spacers between adjacent units are similarly filled and are closed by metal cover strips 18 sprung between the limbs 14<SP>2</SP> of the uprights. Endwise movement of adjacent units is prevented by clips 23 engaging in each of the channels formed by the limb 14<SP>2</SP> with the body 14 of the uprights.
Patent GB-850251-A (GB)
Title: A method for the preparation of a soluble phosphorus chloronitride rubber polymer
IPC: C01B21/098
Filed: 1958-12-29
Abstract: (PNCl2)n rubber polymers are prepared by dissolving oily PNCl2 polymers having a degree of polymerization p  between 6 and 20 in a dry organic solvent, adding 0.1-6% water, and heating the mixture on a water bath.  H2O may be added absorbed on a solid carrier, e.g. charcoal, diatomaceous earth, silica gel, silicates, or aluminium oxide, or dissolved in a liquid, e.g. dioxan, miscible with the solvent, e.g. benzene.  The rubber is soluble in organic solvents and has a degree of polymerization 50-200.
Patent GB-1045573-A (GB)
Title: Improvements relating to the excitation and control of dynamo-electric generators
IPC: H02P9/32
Filed: 1961-11-22
Abstract: 1,045,573. Automatic voltage control. SELECTRA Ltd. and E. W. KREBS. Feb. 15, 1963 [Nov. 22, 1961], No. 41854/61. Heading G3R. The excitation circuit of an alternator is associated with a known current and voltage compounding arrangement which is modified by the provision of a transductor connected as a variable impedance acting as a by-pass circuit for the excitation current. As shown, current and voltage components of compounding are derived from a current transformer 15 and a linear reactor 17 respectively and are applied over a rectifier 12 to the field winding 11 of an alternator 10, giving a "coarse" regulation to constant output voltage. A self saturating transductor 20 with two operating windings 21 and oppositely poled rectifiers 23 connected as a bridge circuit has the A.C. corners 24, 25 of the bridge connected to the A.C. input of rectifier 12 and the D.C. corners 27, 28 of the bridge connected to a resistor 26 to which is applied a control voltage which is dependent upon the output voltage of the alternator and which is derived over a transformer 29, a variable resistor 31, and a rectifier 32. The arrangement is such that the impedance of the transductor 20 is controlled in dependence upon output voltage variations, whereby the excitation current by-passed through the transductor is varied in a corrective manner to give a "fine" voltage regulation. Three-phase embodiments are described with reference to Figs. 2, 3 and 4 (not shown). The resistor 26 may be replaced by a transistor or by silicon controlled rectifiers (Fig. 4, not shown) and the circuit for deriving a control voltage may include a voltage sensitive bridge circuit having a reference Zener diode in one of its arms (Fig. 3, not shown). The exciter arrangements may be of the brushless type.
Patent GB-1520003-A (GB)
Title: Device for filtering a moving fluid
IPC: B01D35/02
Filed: 1975-10-14
Abstract: 1520003 Filter device UNITED TECHNOLOGIES CORP 14 Oct 1975 [25 Oct 1974] 41998/75 Heading BID A device for filtering a portion of a flow of fluid in a conduit, e.g. a portion of a fuel flow to a gas turbine, comprises a conduit 10 with an inlet and outlet and containing a hollow plug 28 mounted axially in the conduit, the plug having an impervious nose portion, a fluid-pervious filtering body portion 34, e.g. of a stainless steel mesh, and an impervious end portion 32 providing a separate outlet 20a for fluid filtered through the plug body portion. In use the fluid flow is accelerated around the plug and sweeps the filter inlet clean. A courser mesh screen 12 of frusto-conical form may be placed upstream of the plug to filter the whole fluid flow.
Patent GB-1483816-A (GB)
Title: X-ray opaque filler composition useful in dental and medical restorative compositions
IPC: A61K6/884
Filed: 1974-09-27
Abstract: 1483816 Filler composition; dental cements LEE PHARMACEUTICALS 27 Sept 1974 [28 Sept 1973] 42176/74 Heading C3P An X-ray opaque filler composition for synthetic resin compositions comprises 5-35% by weight of the filler of X-ray opaque particulate barium glass having a refractive index of 1À7- 2-0 and 95-65% by weight of the filler of an X-ray transparent particulate filler material having a refractive index within the range known for synthetic resins. The filler material may be silica, quartz, glass, e,g. borosilicate glass, or micro fibrous refractory salts. The particle size of the filler composition may be 0À5-50 microns with the average particle size being 2-15 microns. A suitable refractive index for the filler material is 1À4 to 1À6. The filler composition may constitute 90-40% by weight of a composition useful as a dental restorative composition comprising in addition a polymerizable monomer. The polymerizable monomer may be a mixture of the diglycidyl ether of bisphenol-A dimethacrylate and triethyleneglycol dimethacrylate, which is polymerized with the aid of a catalyst comprising benzoyl peroxide and N,N-bis-(2-hydroxyethyl)toluidine and specific filler compositions in the examples comprise barium glass and one of borosilicate glass, amorphous silica and quartz.
Patent GB-874259-A (GB)
Title: Improvements in propellent powders
Inventor: WOOD HERBERT LESLIE
IPC: C06B25/26
Filed: 1958-12-31
Abstract: 874,259. Propellant powders. IMPERIAL CHEMICAL INDUSTRIES Ltd. June 5, 1959 [Dec. 31, 1958], No. 42269/58. Addition to 861,810. Class 9(2). The method of preparing surface moderated double-base propellant powders claimed in the parent Specification is modified in that the granules which are treated contain about 3% of a non-volatile liquid non-explosive plasticizer for nitrocellulose miscible with nitroglycerine, e.g. dibutyl phthalate. The liquid explosive nitric ester is nitroglycerine, the resinous substance is a glyceryl ester of wood rosin, a pentaerythrityl ester of polymerized wood rosin, or lead naphthenate and is applied in an amount not exceeding 3% by weight of the granules together with a solid non-volatile non-explosive nitrocellulose gelatinizer soluble in nitroglycerine, e.g. sym.- diethyl diphenyl urea, and the tumbling is carried out with an excess of graphite at a temperature of 35‹-80‹C. The graphite completely covers the granules and is the chief surface moderating agent. The granules treated may also contain a small amount of the sym-diethyl diphenyl urea which acts as a stabilizer for the nitrocellulose as well as a gelatinizer. In examples granules containing nitrocellulose, nitroglycerine, dibutyl phthalate, sym-diethyl diphenyl urea, and potassium sulphate are treated with a glyceryl ester of wood rosin, sym.-diethyl diphenyl urea, and a wetting agent dispersed in water at a temperature rising from 25‹ to 40‹C., dried at 45‹C. and tumbled with excess powdered graphite at a temperature rising to 50‹C.
Patent GB-1473681-A (GB)
Title: Non-refillable bottle closure devices
IPC: B65D49/04
Filed: 1974-09-30
Abstract: 1473681 Seaming SAS ANGELO GUALA DI PIERGIACOMO E ROBERTO GUALA & CO 30 Sept 1974 [17 Oct 1973] 42396/74 Heading B5K [Also in Division B8] A plastics sleeve 26 and cap 31 of a non- refillable bottle closure (see Division B8) are joined on assembly by clamping them between plates 39 and 40 to press pointed projections 30 on axially-extending sleeve lugs 29 against the cap and ultrasonically-welding the sleeve and cap together. The weld lugs form a frangible cap/sleeve connection forming a guarantee or tamper-proof seal.
Patent GB-1278445-A (GB)
Title: Estrogenic agents and preparation of same
Inventor: CONROW RANSOM BROWN
IPC: C07J17/00
Filed: 1969-08-26
Abstract: 1278445 Estrogenic steroid glycosides AMERICAN CYANAMID CO 26 Aug 1969 [31 Jan 1969] 42521/69 Heading C2U The invention comprises #<SP>1,3,5,(10)</SP>,#<SP>1,3,5,(10),7</SP> and #<SP>1,3,5,(10),6,8</SP> steroids of formula wherein R 2  is H or OCH 3 , and C 17 -C 16  is and their preparation by saponification with a sodium base of compounds of formula wherein R is (C 1-4  alkoxy) carbonyl, R 1  is C 2-5  alkanoyl or benzoyl, R 2  is H or OCH 3  and C 17 -C 16  is -CO-CH 2 -, -CH(OCHO)-CH 2 - or -CH(OCHO)-CH(OCHO)-; the latter compounds being prepared by reacting an appropriate 3-hydroxysteroid with an appropriate alkyl 2,3,4-tri-O-acyl-l-halo-l-deoxy-(α or #)-D-glucopyranuronate in a hydrocarbon solvent and in the presence of CdCO 3 , Cd(OH) 2 , Cd(OCOOH 3 ) 2  or Cd(CN) 2 . Estradiol 17-formate and estriol 16,17-diformate are prepared from the parent alcohols by reaction with formic acid. Compounds of Formula I are said to be estrogenic, and may be made up with carriers into pharmaceutical compositions for oral administration.
Patent GB-1450098-A (GB)
Title: Method and appratus for printing
IPC: B41F15/10
Filed: 1973-09-10
Abstract: 1450098 Stencilling machines P ZIMMER 10 Sept 1973 [8 Sept 1972] 42526/73 Heading B6C A method of registration in a web-fed multistencil printing machine having at each of a plurality of printing stations a rotary stencil which is capable of being lifted from the web between its successive stencilling steps comprises sensing any mis-registration between the web and a first of said stencils and, whenever said first stencil and the web are out of register, imparting to each of said stencils whilst the latter is lifted from the web sufficient forward or reverse rotation additional to the rotation imparted to said stencils during a stencilling step for each stencil to be moved respectively into register with the web. The stencils may be raised by cam plates, pneumatic or hydraulic cylinders or magnets. The main drive to each stencil is from a respective pattern gear consisting essentially of a differential gear means. Adjustment of each stencil is effected through feelers, a pulse circuit and a servomotor. Synchronizing differential gear means are provided between adjacent stencils. When the stencils operate in pairs, i.e. each one of a pair prints one half of the pattern in a particular colour, further means are used to synchronize the second with respect to the first, the fourth with respect to the third and so on. The adjustment of individual stencils may be controlled by digital signals fed to either a magnetic recording disc or a plurality of such discs the necessary equipment comprising circuitry including reading heads. Instead of discs other known storage devices such as magnetic tapes or perforated paper strips may be employed.
Patent GB-932160-A (GB)
Title: Improvements in and relating to signal amplifiers
IPC: H01J43/30
Filed: 1961-11-29
Abstract: 932,160. Electric analogue computers. PHILCO CORPORATION. Nov. 29, 1961 [Nov. 29, 1960], No. 42651/61. Class 37. [Also in Group XL (c)] Variations in electron transit time, and hence in phase shift, in an electron multiplier to which automatic gain control is applied by means of an un-by-passed resistor connected in series with an intermediate electrode of the electron multiplier, and occasioned by variations in the potential of said intermediate electrode as the signal level changes, are reduced or eliminated by a suitable choice of the bias applied to said intermediate electrode for a mean value of current flowing through the unby-passed resistor or by inserting a resistor in series with the anode of the electronic multiplier to produce a compensating change in potential there with changes in signal amplitude. In a first embodiment, Fig. 1, resistors 17 and 18 are so chosen that when current flowing in A.G.C. resistor 22 corresponds to an average value of signal level, the potential of electrode 5 is midway between the potentials of electrodes 4 and 6. In a second embodiment, Fig. 3, resistor 18a is made much smaller than resistor 17a so that due to the voltage drop across A.G.C. resistor 22a the voltage difference between electrodes 5 and 6 is very small and secondary electrons travel directly from electrode 5 to anode 12a. Compensation for variations in transit time between electrodes 4 and 5 with signal level is then effected by means of a resistor 23 inserted in the anode circuit of the electron multiplier; this causes the anode voltage and 12a to vary with signal level in such a manner that the overall transit time between electrodes 4 and 12a does not change.
Patent GB-1365613-A (GB)
Title: Friction clutch
IPC: F16D13/75
Filed: 1972-09-14
Abstract: 1365613 Friction clutches FICHTEL & SACHS AG 14 Sept 1972 [7 Oct 1971] 42729/72 Heading F2C In a friction clutch wherein two driven discs 17, 18 are normally clamped between a flywheel 6, intermediate plate 2 and a presser plate 11 by a diaphragm spring 13 and the intermediate plate 2 is moved away from the flywheel 6 by tangential leaf springs 14 during clutch disengagement, axial separation of the intermediate plate 2 and flywheel 7 during clutch disengagement is automatically adjusted to take up wear by cylindrical stops 3 connected by spring clamps 5 to the intermediate plate 2 and cooperating with abutment surfaces on the flywheel 6 and a clutch cover 12. The spring clamps 5 have sharply pointed spring arms 4, 41 which grip the cylindrical stops 3 and prevent leftward movement of the stops relative to the intermediate plate 3 during clutch disengagement whilst permitting rightward axial movement of the stops to take up wear when the stops engage the abutment surface on the flywheel 6 during clutch engagement. The presser plate 15 is connected to the clutch cover 12 by radial spring straps 15.
Patent GB-1058003-A (GB)
Title: Apparatus for making boxes from blanks
Inventor: AGAR ROBERT LESLIE
IPC: B31B3/46
Filed: 1964-10-21
Abstract: 1,058,003. Making boxes. MARDON, SON & HALL Ltd. Dec. 15, 1965 [Oct. 21, 1964], No. 42842/64. Heading B5D. Apparatus for manufacturing a tray-like box comprises a gluing device 16, Fig. 2 (not shown), for gluing the corner tabs of the blank, Fig. 1 (not shown), the operation of the device being controlled by the passage of a blank, a plunger and die mechanism 17 controlled by the presence of a glued blank, and means for directing blanks past the gluing device and to the plunger and die mechanism. Blanks are fed vertically from a hopper 14, engaging first a stop bar 25 which, when cam-operated switch 43 and limit switch 50 actuated by the plunger 38 are appropriately set, is moved aside after a predetermined delay period by the solenoid 29. The blank is then fed by rollers 18, 19 to the gluing device 16 where it engages a feeler 33 which causes glue' to be applied when the cam-operated switch 44 is actuated. The blank then falls to a second feeler arm 36 which actuates a switch 37, causing the plunger 38 to advance and force the blank into the die to an extent determined by a limit switch 52. The tabs may be in the form of corner gussets.
Patent GB-1119100-A (GB)
Title: Improvements in or relating to printing machine sheet transfer mechanism
Inventor: WEISBACH GUNTER
IPC: B41F21/10
Filed: 1966-09-27
Abstract: 1,119,100. Printing apparatus. DRUCKMASCHINENWERK PLANETA VEB. 27 Sept., 1966, No. 43011/66. Heading B6C. A gripper device for use in a sheet transfer cylinder in a printing machine comprises a series of spring loaded gripper fingers 3 on a gripper shaft 2 carrying at one end lever, roller and cam means by which the shaft is operatively rotated. The device also comprises a gripper block 4 associated with each gripper. The fingers, blocks, shaft and lever, roller and cam means are all mounted as a self-contained unit on a carrier 1 which comprises a length of angle iron suitably adapted for adjustable mounting within a longitudinal gap in the cylinder. The gripper blocks 4 may be adjustably mounted on the carrier.
Patent GB-1472368-A (GB)
Title: Process for the preparation of 4-hydroxy-3-methoxy-phenylace tonitrile
IPC: C07C253/00
Filed: 1975-10-21
Abstract: 1472368 4 - Hydroxy - 3 - methoxy - phenylacetonitrile BAYER AG 21 Oct 1975 [3 Dec 1974] 43104/75 Heading C2C 4 - Hydroxy - 3 - methoxy - phenylacetonitrile is prepared by reacting an N-alkylvanillylamine of the formula in which R is an alkyl group, with hydrogen cyanide at 100 to 190 C. in water or an inert organic solvent. The hydrogen cyanide may be produced in situ by the action of an acid on an alkali metal or alkaline earth metal cyanide.
Patent GB-1132816-A (GB)
Title: Valve bags
IPC: B65D30/24
Filed: 1967-09-22
Abstract: 1,132,816. Valve bags. G. YAMAGUCHI. 22 Sept., 1967 [22 Sept., 1966], No. 43197/67. Heading B8K. A valve tube 5 of thermoplastic sheet returns to the folded configuration illustrated whenever it is not distended by the filling pressure. The valve tube is stiffened by welds 8, 9, and its folds are formed by heating the thermoplastic material, and quenching it while folded. Holes 21 permit exhaust of air. The valve may be incorporated anywhere in the seam 29 of the bag, or may be welded to an aperture cut in the folded edge 1 of the bag or at an obliquely cut corner. Nitrocellulose dyestuff diluted with alcohol may be used to prevent the walls of the valve tube being welded together during manufacture of the bag.