baber/WOPTO huggingface dataset:
Patent GB-601422-A (GB)
Title: Improvements in concrete and reinforced concrete beams or like structural members
IPC: E04C3/29
Filed: 1945-10-02
Abstract: 601,422. Beams. RANSOM, G. F. Oct. 2, 1945, No. 25631. [Class 20(iv)] A concrete or reinforced concrete beam, lintel, &c., has one or more inserts therein of blown, &c., concrete, breeze or like nailable material extending along the beam and from the level of the neutral axis to the face on the tension side thereof, so that no diminution of strength of that part of the beam under compression, will be occasioned by the provision of the insert. An insert may extend over the whole length of the beam or only over part as shown at b, and a second insert may be provided in the opposite face thereof. In this way, if the tensile stress in the lower part of the beam is taken substantially wholly by a re-inforcement (not shown), the total strength of the beam will not be affected. The insert may also provide a surface that will take plaster &c., may increase thermal insulation, and reduce the weight of the beam. It may be cast in situ with the beam, or may be formed of a pre-cast block or blocks placed in position before the beam concrete is poured.
Patent GB-656126-A (GB)
Title: Improvements in or relating to radio navigation systems
IPC: G01S1/30
Filed: 1948-10-08
Abstract: 656,126. Valve generating circuits; radio navigation. DECCA RECORD CO., Ltd., O'BRIEN. W. J., BRIDGES, D. E., HENDLEY, D. A., EASY, M. H., and VICKERS, J. Oct. 8, 1948, No. 25733/49. Divided out of 656,108. [Classes 40 (vi) and 40 (vii)] In a radio navigation system comprising a master station arranged to radiate two siagnls of different harmonically-related frequencies having a lower beat frequency, and a slave station receiving the master signals and frequency-changing one of them by means including a divider, means are provided at the slave station to derive the beat frequency from the master signals and for synchronizing the frequency divider by the use of this beat signal. The invention is described with reference to the navigation system of Specification 656,108 and Fig. 4 shows the circuit arrangements of units 40 and 41 and part of unit 42 shown in Fig. 2 of the drawings of thart Specification. Valves 201 and 202 are arranged as a positive feed-back amplifier capable of self-oscillation at about the output frequency. This oscillator may be locked in phase by the application of a signal of the fundamental (output), frequency to the control grid. The presence of some harmonic of the fundamental frequency on the control grid will also lock the oscillator to the fundamental although with an ambiguity of phase dependent on the order of the harmonic applied. The output of the oscillator is derived both at transformer 214 (feeding discriminator 56 in the application mentioned), and through ringing transformer 203 to pipper valve 204. The control signal for the divider may be a continuous one of six times the output frequency applied to valve 206 which is normally conductive and passes on the signal through phase inverter valve 205 to the grid of valve 201. Valve 207 which has a common cathode resistor with valve 206 is fed intermittently with the beat frequency of the master signals, as received in. the above-mentioned system during lane identification periods. This beat frequency is passed by valve 207 and valve 206 is at the same time rendered non-conductive due to the action of potential dividers 210, 211 and 212, 213. The divider is thus synchronized by the application of the beat frequency and maintained in phase by the sixth harmonic signal applied during other times. Re-synchronization is only essential on starting or after a breakdown but provision is made in the system of Specification 656,108, for a beat signal to be applied once per minute to ensure that not more than one set of erroneously-phased signals for breakdown are radiated by the slave station, of which the divider is a part. Specifications 620,479, 630,698 and 656,125 also are referred to.
Patent GB-699213-A (GB)
Title: Improvements in and relating to sink assemblies
IPC: E03C1/33
Filed: 1951-11-02
Abstract: 699,213. Supporting sinks. BRIGGS MANUFACTURING CO. Nov. 2, 1951 [Dec. 8, 1950], No. 25738/51. Class 26 Means for mounting a sink in an opening in a supporting structure comprise a moulding 15 whose upper part covers the adjacent edges of sink 12 and support 11a, articulated upper, and lower clamp elements 19 and 20, the upper being engageable with the underside of the sink rim and with, the moulding at 18, and the lower having a portion 20b engaging the underside of the support, and an adjustable clamping screw 27. The element 19 has a portion 21 which hingedly engages in a slot in the element 20, and this lower element 20 is reversible to provide means for mounting on supports of different thicknesses.
Patent GB-1156201-A (GB)
Title: Improvements in Electrochemical Machining
Inventor: DICKSON ERIC WINSTON
IPC: B23H9/02
Filed: 1965-06-17
Abstract: 1,156,201. Electrolytic deburring. ASSOCIATED ENG. Ltd. June 17, 1966 [June 17, 1965], No.25753/65. Heading C7B. Workpieces are deburred by electro-chemical machining, the deburring tool being so constructed that the only active part of the tool coming into close proximity with the workpiece consists of one or more edges or strips of conducting material having a contour generally following the line of the region of the workpiece to be deburred. Fig. 2 shows a tool for deburring the teeth of an internally toothed gear-wheel, comprising a metal sheet 7 sandwiched between shafts of insulating material 4, 5, the sheet of metal being flush with the edges of the insulating material at 7a and recessed at 7b so that deburring takes place only on the sides of the gear-wheel teeth and between them. The metal part of the tool, in the form of sheet, wire or rod may be enclosed by casting insulating material around it and the machining to expose metal at the desired active regions. The active exposed edges of the metal may be flush with the insulating material or recessed slightly and the depth of recessing may vary to provide different degrees of deburring at different parts of the tool.
Patent GB-897445-A (GB)
Title: Improvements in or relating to an assembly comprising a heat source and associated apparatus
Inventor: LONG EVERETT
IPC: G21C13/024
Filed: 1958-08-11
Abstract: 897,445. Nuclear power plant. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. July 24, 1959 [Aug., 11, 1958], No. 25799/58. Class 39(4). A nuclear reactor pressure vessel 1 is supported peripherally to allow radial expansion and contraction, and associated heat exchangers 11 are supported so that they can move freely as dictated by the expansion or contraction of the pressure vessel, of connecting pipes 12, and of themselves, all supports being in a common plane perpendicular to the fixed axis of the pressure vessel and containing the axes of pipes 12. Lugs 2 are supported by curved bearing plates 8, rollers 7 and corrugated resilient members 9 on pillars which form part of the shielding. All rollers are coplanar and are tangential to circles drawn about the axis 10 of the pressure vessel. Insteadof the members 9 wedges may be used, or a second set of rollers perpendicular to the first. Balls may be used instead of rollers. The pipes 12 are coaxial and gaseous coolant is circulated by circulators in the bases of the heat exchangers. Valves are provided in both inner and outer ducts of the pipes. Specifications 886,320, 897,443 and 897,444 are referred to.
Patent GB-631853-A (GB)
Title: Improvements in or relating to adjustable and replaceable heel treads for boots and shoes
IPC: A43B21/433
Filed: 1947-09-23
Abstract: 631,853. Revoluble heels. SHEPARD, T. Sept. 23, 1947, No. 25839. Convention date, Nov. 16, 1940. [Class 17 (iii)] A heel has a body portion 10 of rigid material having a recess 14 on the underside to receive a pad 11. The recess 14 is provided with depressions 18 and an annular undercut groove 21 which may be of spherical crosssection having a narrow opening. The body 10 is attached to the sole 16 by nails 17 at the forepart and by nails 19 located in the depressions 18. The pad 11 has an annular resilient ridge 22 of similar cross-section to the groove 21 and is fixed to the body 10 by forcing the ridge 22 linto the groove 21. A button 23 is provided on the pad 11 to engage a depression 18 and secure it in a desired position. The depressions 18 increase the resilience of the heel.
Patent GB-650916-A (GB)
Title: Improvements in or relating to the production of cast or otherwise moulded enlarged or reduced facsimiles of objects
Inventor: PATTERSON ROBERT
IPC: B29C33/38
Filed: 1948-10-05
Abstract: Enlarged or reduced facsimiles of objects are produced by (a) forming from a highly-plasticized polyvinyl resin a mould of the object to be copied, (b) removing the object from the mould, (c) steeping the mould in an organic solvent which swells or shrinks the mould, and (d) casting or otherwise moulding a facsimile in the swollen or shrunk mould.  The resin may be that containing 15-25 per cent of polyvinyl chloride and 85-75 per cent of plasticizer, sold under the Registered Trade Mark "Vinamold". Organic solvents that swell the resin are ketones, such as acetone and methyl cyclohexanone, certain chlorinated hydrocarbons, e.g. ethylene dichloride and trichloroethylene, and esters, such as amyl acetate.  Organic solvents that shrink the resin are toluene, benzene, ethyl alcohol, kerosene, petrol, paraffin, white spirit and certain chlorinated hydrocarbons, e.g. carbon tetrachloride. By mixing the solvents, various degrees of swelling or shrinking can be obtained.  The swelling action of methyl cyclohexanone is rather rapid, and it is preferred to dilute this solvent with an equal volume of white spirit.  The period for steeping the mould in the solvent is in general at least 3 hours.  The maximum enlargement of the mould is to about 1 1/3 its original size and the maximum shrinkage is to about 3/4 its original size. If the steeped moulds, whether swollen or shrunk, are allowed to stand in the open air they shrink, perhaps unevenly, to about 1/2 of the original size, and for this reason they are stored in the solvent.  To produce very large or very small moulds for making very large or very small facsimiles, a first mould is prepared as described above, then an intermediate facsimile is cast in the first mould and removed therefrom, then a second mould is prepared from the intermediate facsimile, and this second mould is swollen or shrunk, the process being repeated until a sufficiently large or small mould has been obtained.  A mould is made by pouring the molten resin over the object, e.g. a coin, medal, cameo, button or entomological or botanical specimen, and allowing it to cool; if the object is porous it is first coated with a solution of vinyl acetate in toluene or with a thermosetting phenol-formaldehyde lacquer.  The material used for making the facsimiles may be plaster, wax, gelatine or those synthetic plastics which can be melted at temperatures below the softening point of the resin.  When plaster is used it may be mixed with a 5 per cent solution of a wetting agent, to prevent blow-holes; this retards setting but produces a harder plaster.  A plaster facsimile thus made may be coated with paraffin wax and used to make a larger mould and a larger facsimile.  Two examples are given.
Patent GB-616215-A (GB)
Title: Improvements relating to the manufacture of sulphurised oils and factice
Filed: 1946-08-30
Abstract: Factice and sulphurized oils are prepared by reacting sulphur with shark oil, or with a blend of shark oil with another vulcanisable oil, having an unsaponifiable content of 30 to 60 per cent and correspondingly high iodine values of 160 to 200.  The factices so prepared are characterised by high sulphur content such as 25 to 28 per cent total sulphur, giving high tensile strength to rubber mixes containing them, or by high sulphur content with low free sulphur such as 21 per cent sulphur with 0.3 per cent free sulphur suitable for the preparation of sulphurless rubber mixes to be vulcanised by thiuram disulphide.  Viscous oils suitable as extreme pressure additives for lubricants can also be prepared by the use of lower proportions of sulphur.  The reaction of the oils with sulphur may be carried out in the presence of activating substances such as iodine (see Specification 615,395) or secondary amines (see Specification 588,353).  In one example 500 grams of shark oil of iodine value 174.5 and unsaponifiable content of 38 per cent was heated with 200 grams of sulphur and 12 1/2 grams of dicyclohexylamine at 150 to 165 DEG  C. for one hour.  A tough dark yellow factice containing 27.7 per cent total sulphur and 5.9 per cent free sulphur was obtained which gave a rubber mix of 45 per cent higher tensile strength and 5 per cent higher retention of elongation than that of the same mix with rape oil factice.  In another example 200 grams of shark oil was heated with 35 grams of sulphur and 4 grams of dicyclohexylamine at p 160-170 DEG  C. for 6 hours to give a deep red viscous oil containing 13.5 per cent total sulphur and 0.19 per cent free sulphur suitable as an extreme pressure addition for lubricants.  Other examples describe the sulphurisation of mixtures of shark oil and rape oil.ALSO:Rubber mixes containing factice prepared from shark oils (see Group III) are stated to have 45 per cent higher tensile strength and 5 per cent higher retention of elongation on aging than those from the same mixes with rape oil factice.  By using lower percentages of sulphur in the preparation of the factice compounds are obtained of relatively high total sulphur content such as 21 per cent with very low free sulphur content such as 0.3 per cent suitable for the preparation of sulphurless rubber mixes to be vulcanized by thiuram disulphide.
Patent GB-390418-A (GB)
Title: Improvements in or relating to photographic enlarging apparatus
IPC: G03B27/52
Filed: 1932-09-21
Abstract: 390,418. Photographic enlarging- apparatus; lens mounts. LEITZ GES., E., Optical Works, Wetzlar, Germany. Sept. 21, 1932, No. 26213. Convention date, Jan. 15. [Classes 97 (i) and 98 (i).] An objective e, Fig. 1, normally employed on a camera, is fitted to an enlarger in a focussing mount comprising a tube d having an internal annular wall d<1> to which the objective is secured as by a screwthread engagement, and having also an external screw-thread which screws for focusing into an internally-threaded barrel b fixed on the front of the enlarger. The objective may carry an intermediate ring h, Fig. 3, threaded to engage the internal annular wall on the tube d. The enlarger comprises a spherical lamp housing provided with a negative holder c.
Patent GB-188488-A (GB)
Title: Improvements in and connected with tunnel furnaces or kilns
IPC: F27B9/30
Filed: 1921-10-05
Abstract: 188,488. Seedorff, T., Barfred, A. F., and George, L. E. Oct. 5, 1921. Tunnel furnaces.-In a tunnel furnace having a high temperature zone k of greater width than the preliminary heating and cooling zones i, l, burner ports band dampered outlet flues are provided on both sides of the tunnel within the high temperature zone. Additional outlets h are also provided at the entrance to the preheating zone i. The ports b and outlet flues g are preferably so controlled that the heating-gases flow diagonally across the high temperature zone, the direction of flow being changed at intervals from one diagonal to the other. In the construction shown gas is supplied to the ports b from a producer c through flues controlled by dampers m<2>. The air for combustion is heated in flues d, d<1> in the walls and roof of the cooling-zone and passes thence through downtakes e<1> and flues e<2> to recuperators f, through which the waste gases leaving the kiln through the flues g are passed on their way to the chimney flue. The air leaves the recuperators through the flues e<3>, e<4> and is admitted to the ports b under control of the dampers m<4>. The pairs of dampers m<1> in the waste gas flues g, m<2> in the supply flues, and m<4> in the air supply flues are suspended on pivoted beams m<5> or from pulleys, so that when one damper of a pair is closed the other is open.
Patent GB-445542-A (GB)
Title: Rubber and its preparation for manufacture
IPC: C08J3/03
Filed: 1934-09-14
Abstract: A dispersion is made by masticating in the presence of water, rubber or the like which has been coagulated from latex containing dispersing agents, such as soaps, sulphonated oils, proteins, starch, saponin, dextrin, caramel, gums.  To ensure that these agents are retained in the coagulum, coagulation is effected by spray or film-drying or the like.  According to an example, 6 parts of oleic acid, 2 parts of caustic potash, and 4 parts of glue per 100 parts of rubber, are added to latex which is spray or film dried.  The coagulum is plasticized on rolls and worked in an internal mixer with ammonia water until inversion takes place.  An excess of dispersing agent over that required for dispersion may be added to the latex, and the coagulum used as a mother stock in the dispersion of additional untreated rubber.
Patent GB-790745-A (GB)
Title: Nitro diarylamine methine dyes
IPC: C09B23/14
Filed: 1956-08-29
Abstract: Ethyl and methyl a -cyano-3-nitro-4-chlor-cinnamates are prepared by condensation of 4-chloro-3-nitrobenzaldehyde with ethyl or methyl cyanoacetate in propanol in presence of piperidine.  4 - Methyl - 3 - nitro - benzene sulphomorpholide is made by condensation of morpholine with the corresponding sulphochloride. It is converted by reduction to the amino body.ALSO:The invention comprises dyes of the formula: <FORM:0790745/IV (b)/1> wherein X and Y are hydrogen, nitro, alkyl, alkoxy, halogen, or <FORM:0790745/IV (b)/2> (wherein R1 and R2 are hydrogen, alkyl, hydroxyalkyl, acyl and R1 and R2 may form a heterocyclic ring with the nitrogen), and R is alkyl, haloalkyl, hydroxyalkyl, and cyanoalkyl.  They are made by condensing a monocyclic primary aromatic amine with an ester of a  - cyano - 3 - nitro - 4 - chlorocinnamic acid of the formula: <FORM:0790745/IV (b)/3> The products dye cellulose acetate and polyester fibres. Solvents specified for the condensation include alcohols, ketones, and hydrocarbons, and acid binders include the basic salts and oxides of alkali or alkaline earth metals, tertiary amines, and an excess of the primary amine.  In examples, ethyl a -cyano-3-nitro-4-chloro-cinnamate is condensed with: (1) aniline, (2) p-anisidine, (3) p-phenetidine, (4) p-toluidine, (5) o-toluidine, (6) p-nitroaniline, (7) sulphanilamide, (8) N-benzoylsulphanilamide. Also in Example (9) methyl a -cyano-3-nitro-4-chloro cinnamate is condensed with 2 - methyl - 4 - sulphonmorpholino - aniline.  Dyeing examples using cellulose acetate and polyester fibres are given.
Patent GB-1309070-A (GB)
Title: Hydrodynamic vehicle brakes
IPC: F16D57/04
Filed: 1971-04-19
Abstract: 1309070 Hydrodynamic brakes; cooling DAIMLER-BENZ AG 19 April 1971 [8 April 1970] 26458/71 Heading F2E A hydrodynamic vehicle brake 10 has a stationary bladed element 12 formed by a fixed housing 11 and a bladed wheel 14 driven by a driving shaft 13-to be braked and the brake 10 is connected in a circuit leading from its outlet 18 through a radiator 19, a non-return valve 20 and an automatic cut-off valve 21 to an inlet 22, a charging cylinder 23 which can be pressurized by a brake valve 25 actuated by a pedal 24 also being connected to the circuit. A shaft seal 15 and a seal 16 in the form of a piston ring have a space 17 therebetween which space 17 is connected via a bore 28, pipes 27 or a duct in the housing 1, and a duct 26 in the element 12 with a central space in the brake 10, This central space is pressure-free or under vacuum during operation of the brake 10 and if the seal 16 allows oil under pressure to pass, this oil will be returned to the central space to relieve pressure on the seal 15. The pedal 24 has associated therewith a piston-cylinder 29, 30 whose space 31 is also connected to the central space via a pipe 32 and pipes 27. If the pedal 24 is actuated while the vehicle is stationary the cylinder 23 will apply pressure to the brake 10 which pressure will also be propagated through the duct 26 to the pipes 27 and thence to the space 31 via the pipe 32; this will resist or prevent further movement of the pedal 24 to afford protection against the forcing out of the seal 15.
Patent GB-482520-A (GB)
Title: Improvements in door operating mechanism
IPC: E05F15/04
Filed: 1936-09-30
Abstract: 482,520. Door-operating appliances. NATIONAL PNEUMATIC CO. Sept. 30, 1936, No. 26587. Convention date, Nov. 30, 1935. [Class 65 (i)] A passenger vehicle door is pivotally mounted on a pair of arms extending from a vertical shaft which is rotated by suitable operating means, the door being connected to a point spaced from the shaft by means causing rotation of the door relatively to the arms when the shaft is rotated to open or close the door ; a resilient device is preferably included in the connection to enable the door to be manually opened, or obstructed during closing, without affecting the operating means. In the form shown in Figs. 8 and 10, a pair of doors 2 have fixed to them pivots 22 which are rotatably mounted in hollow arms 20 fixed to vertical shafts 6. The shafts 6 are rotated in opposite directions by a fluid pressure engine 11 through mechanism comprising a link 13, an arm 19, a link 14, and gears 16; the pivots 22 are rotated in the arms 20 in opposite directions to the shafts carrying them by gears 24, 25 and links 27 pivoted to the door frame at 28 so that the doors swing open outwardly as the arms 20 carry them inwards. -The links 27 are made telescopic and provided with a compression spring which allows the doors to be rotated in the opening direction relatively to the arms 20 by hand or by any obstruction encountered in closing without affecting the position or motion of the arms. In a modification of the connecting mechanism, the gears 24, 25 are replaced by a rack forming part of the link 27. In a further modification, not permitting manual operation, the intermediate pinion 24 is omitted and the pivot 28 is placed on the opposite side of the shaft 6, the link 27 being adjustable but not telescopic ; this form may be adapted for manual operation by carrying the pivot 28 on an arm freely rotatable on the shaft 6 but constrained by a spring to be normally stationary relative to the door frame. In another arrangement, Fig. 21, the mechanism is carried on the frame, and is operated by a link 80 from the engine rotating a shaft 76 by means of an arm 78 ; the shaft 76 is connected by gears with the shaft 6 to rotate the latter, and carries an arm 75 slidably engaging a member 73 pivotally connected at 72 to the door, the opening movement of the door on its pivot 22 being effected by contact between the parts 73, 75 and the closing movement by tension springs 83 connecting these two parts. In a modification of this arrangement, the arm 75 is pivoted to a block sliding on guide rods fixed to the member 73 and the springs 83 are arranged in compression on these guide rods.