baber/WOPTO huggingface dataset:
Patent GB-638538-A (GB)
Title: Improvements in and relating to pivotal joints for table-legs and the like
Filed: 1948-02-17
Abstract: 638,538. Hinges. WELLS, E. G., and HOKANSON, A. E. Feb. 17, 1948, No. 4675. [Class 65 (ii)] Pivoting adjustments.-A pivotal joint for the folding leg 13 of a table comprises a U-shaped fitting secured to a rail 10 of the table and having a bolt-hole 29 in the base 16 of the U, a pivot pin 21 extending between the limbs of the U, a U-shaped leg-fitting having in its base 24 a bolt hole 30, the leg-fitting being adapted to turn on said pivot pin between the limbs of the rail fitting and to bring its bolt hole into and out of register with the bolt hole in the leg-fitting, a trigger plate 32 fixedly mounted in relation to the legfitting and carrying a spring-pressed bolt 31 extending through the bolt hole therein, and a lever 36 mounted on the trigger plate and connected to the bolt to effect its manipulation. As shown, an upstanding projection 39 on the trigger plate engages a hole in the lever and constitutes a guide for it, the lever being channel shaped and adapted to rock on the curved lower edges of its flanges. In a modification the lever, which is flat and slightly bent between its ends, is engaged under a tongue bent up from the trigger plate. In a further modification a flat lever is engaged under a pin carried between two ears upstanding from the trigger plate. Specification 407,558 is referred to.
Patent GB-1348176-A (GB)
Title: Shear hardening greases
IPC: C08G18/28
Filed: 1972-02-01
Abstract: 1348176 Greases CHEVRON RESEARCH CO 1 Feb 1972 [1 Feb 1971] 4693/72 Heading C5F [Also in Division C3] A shear hardened grease is made by extruding a gel comprising a lubricating fluid and a polyurea thickener through a homogenizing conduit having a cross-sectional area not greater than 0À10 inch<SP>2</SP> and a length not less than 0À05 inch under a pressure and at a feed rate sufficient to subject the gel to a mean shear rate (as defined in ASTM D1092-62) of at least 5 Î 10<SP>4</SP> sees.<SP>-1</SP>. The pressure may be 1000- 15,000 p.s.i.g. and the feed rate 1À7-2000 c.c./ sec. The lubricating fluid may be a mineral oil or a synthetic oil such as polyolefins, polypropylene oxides, carboxylic acid esters or silicone esters. The polyurea may have at least 4 urea groups terminated by hydrocarbon radicals and may be present in 2-25 wt. per cent concentration. The polyurea may be made in situ in the lubricant (see Division C3). The grease may contain antioxidant, rust inhibitors and dyes.
Patent GB-705389-A (GB)
Title: Improvements in or relating to screening frames
IPC: B07B1/46
Filed: 1951-02-27
Abstract: 705,389. Sifting-apparatus. MIAG VERTRIEBSGES. Feb. 27, 1951 [March 6, 1950], No. 4708/51. Class 117 A closed screening frame of rectilineal shape, e.g. for plansifters, is characterized in that the frame 1 consists of one or more members of light metal section having one or more of the edges, grooves 4 receiving sealing inserts and is provided with projections 3 mounting a wooden structure within the frame. The frame may be of one or more cast, extruded or pressed profile members.
Patent GB-433312-A (GB)
Title: Manufacture of alkyl sulphonic acids
Filed: 1934-02-13
Abstract: The conversion of alkyl inorganic esters having 10--18 carbon atoms into the corresponding sulphonates by means of aqueous solutions of sulphites is effected in a closed vessel at 120--150 DEG  C. in the presence of dianilidophosphoric acid or a substituted dianilidophosphoric acid or of a mixture of a phosphate and an aromatic base.  In examples, cetyl bromide, cetyl sodium sulphate, dodecylbromide and dodecyl sodium sulphate are treated with sodium sulphite in the presence of a mixture of aniline and sodium phosphate or of dianilidophosphoric acid.  Specification 360,539 is referred to.
Patent GB-577499-A (GB)
Title: Improvements in or relating to electrical condensers
IPC: H01G4/32
Filed: 1944-03-15
Abstract: 577,499. Condensers. HUNT, Ltd., A. H., and GROUSE, R. A. March 15, 1944, No. 4799. [Class 37] In a wound or other condenser such as that described in Specification 563,084 the metallised dielectric sheets 11, 19 of paper &c. divided longitudinally by unmetallised bands 13, 14 and 21 are further divided transversely by unmetallised bands 15, 22, to provide sets of condensers in parallel, each set consisting of a number in series, in order that the energy discharged in the event of a fault in the dielectric may not be so large as to damage the dielectric unduly. After winding together the strips, the exposed metallised edges 17, 18 are sprayed with molten copper &c 24 and terminals 25, 26 secured thereto. Specification 563,080 also is referred to.
Patent GB-700493-A (GB)
Title: Improvements in or relating to piezo electric elements
Inventor: LOVELOCK LEONARD ROBERT
IPC: H03H3/02
Filed: 1952-02-25
Abstract: 700,493. Piezo-electric crystals. STANDARD TELEPHONES & CABLES, Ltd. Feb. 25, 1952, No. 4840/52. Class 40 (8) In making a piezo-electric unit, a disc or plate 2 fixed to a connecting lead 1 is fixed to the surface of the crystal 5 by means of a mixture of a thermo-setting resin, set at a temperature of not more than 130‹ C., and a synthetic organic elastomer, an electrode 6 being then applied over the surface of the crystal and the disc 2. The thermo-setting resin is a polyaryl ethylene oxide, and the elastomer is a co-polymer of butadiene and acrylonitrile, or a co-polymer of butadiene and styrene. The resin and the elastomer are mixed in solution and the disc is stuck to the crystal by this solution and the curing of the resin then carried out. Specifications 538,541 and 700,266 are referred to.
Patent GB-1121453-A (GB)
Title: Aromatic ethers
Inventor: LONG FRANK
Filed: 1966-02-03
Abstract: The invention relates to a process for the production of an aromatic ether in which an aromatic compound having a replaceable halogen atom preferably chlorine or bromine atom as a nuclear substituent is reacted in the presence of oxygen with an alkali metal alcoholate containing 4 or more carbon atoms so that the halogen atom is replaced by an aliphaticoxy group preferably containing from 4 to 12 carbon atoms inclusive, the quantity of the alkali metal alcoholate employed being at least 1.5 gram mole per gram atom of replaceable halogen in the aromatic compound. The aromatic compound preferably contains not more than one group which enhances the mobility of the halogen atom, e.g. nitro, cyano, carbonyl and sulphonyl groups and a halogen substituted benzene having a nitro group in an ortho- or para-position to a halogen atom is preferred.  In an example, a solution of sodium n-heptoxide is added to a solution of 4-chloronitrobenzene in n-heptanol and air bubbled through and after fractionating 4-n-heptyl oxynitrobenzene is obtained.
Patent GB-582711-A (GB)
Title: Improvements relating to the control of gun-fire
IPC: F41A19/58
Filed: 1943-03-25
Abstract: 582,711. Ordnance ; fuze-setting apparatus. MIDGLEY, A. H., MIDGLEY, A. M., and MIDGLEY, F. March 25, 1943, No. 4879. [Classes 9 (i) and 92, (ii)] Relates to means for controlling gun fire such as that described in Specification 582,705, in which the setting of the fuze is completed after the round has been loaded into the gun chamber and at the instant of firing. According to the present invention, the fire of a number of guns is thus controlled by placing a selector switch f in the fuze-setting control circuit and another selector switch p in the firing circuit, each switch having a plurality of positions corresponding to the number of guns to be controlled, and said switches being operated in synchronism. The diagram shows the lay-out, using fuze-setting and firing circuits as described in Specification 582,705. The fuze-setting. circuits include microphones a, b, c, d, amplifier e and contacts a<1>, b<1>c<1>, d<1> for the selector switch f, whilst the firing circuits include a firing switch h firing coils l, m, n, o, fire-controller g and contacts l<1>, o<1>, n', m<1> for the selector switch p. The switches f, p are operated in synchronism. The selector switches may be interconnected with the fire-controller g so that, each time the controller is operated, the next gun will be automatically selected for fire.
Patent GB-1461165-A (GB)
Title: Technique for the determination of softening temperature for  films
IPC: G01K11/06
Filed: 1974-02-02
Abstract: 1461165 Measuring film softening temperature DECCA Ltd 29 April 1975 [2 Feb 1974] 04915/74 Headings G1D and G1N To determine the softening temperature of a film 18, deposited on a conductive substrate 17, an indentor in the form of an arm 24 bearing a stylus 30, is placed on the film which is heated and the capacitance between the stylus and the substrate is measured. A sudden marked increase of capacitance indicates the softening temperature has been reached, which temperature may be measured by a mercury-in-glass thermometer or by a thermocouple.
Patent GB-765011-A (GB)
Title: Improvements in or relating to internal-combustion engine change air filters
IPC: F02M35/024
Filed: 1955-02-18
Abstract: 765,011. Preventing back-ignition; purifying charge. KNECHT, A. Feb. 18, 1955 [Feb. 19, 1954], No. 4945/55. Class 7 (2). The non-metallic annular filter insert 15 of a charge air cleaner is protected from backfiring engine gases by a flame-proof sieve which may be a hemispherical cage supported on the rim of the induction pipe entry 23, a convex plate depending from the cleaner casing 18 or, as shown, a cylinder 20 which may have a winding 21 of wire fabric and co-operate with a deflector 25 around the entry 23. Wire fabric 22 may be additionally employed. Filter inserts of paper pulp, or containing coconut or synthetic fibres, are referred to.
Patent GB-490812-A (GB)
Title: Improvements in or relating to time switches
IPC: G04C23/24
Filed: 1937-02-18
Abstract: 490,812. Time switches. BRITISH SANGAMO CO., Ltd., BUTHERUS, F. R., GILLIVER, G., and TAGG, G. F. Feb. 18, 1937, Nos. 4946 and 28354. [Class 38 (v)] A time switch for heavy currents has a fixed contact 17 comprising a mercury pot of the kind described in Specification 415,128, and the moving contact plunger 26 is connected to a lever 29, which is pivoted at 30, and has a lug 32 for engagement by pins 34 on a rotatable disc 35 fixed on a spindle 36. Thus rotation of the spindle 36 in six steps, moves lever 29 alternately " on and " off." The rotation of the spindle is effected by an oscillating alternating current motor 46, the armature 42 of which carries pawl 47 engaging a ratchet wheel 48 on the spindle 36. The motor is energized by a time switch (not shown) of the kind described in Specification 473,186, and the motor runs until spindle 36 has been rotated one step. At this time a projection SO on disc 35 moves a lever 51 to open the motor circuit. At the same time a second projection 50 on a second disc 35 has been removed from a second lever 52 to prepare an alternative circuit which is closed by change over contacts in the time switch, when the next operation takes place. As an alternative, the shaft 36 may be driven by a continuously running motor through an electromagnetic clutch the operating coil of which is connected in circuit in the same manner as the motor 46. As a further modification, the shaft 36 may be stepped round by ratchet and pawl mechanism driven by a solenoid periodically energized for short intervals by the time switch. In this case the time switch mechanism is as shown in Fig. 8. The tappet of a time switch engages the part 62 to move lever 60 clockwise and then release it. It returns and a pawl 63 engages a tooth of ratchet 64 to move cam 65 to allow contacts 68 to close. Arm 60a is carried down with arm 60 but only returns after an interval due to pawl 71 engaging a retarding gear train 72. When arm 60a returns pawl 63a engages ratchet 64a and moves cam 65a further step to open contacts 68. Thus contacts 68 are only closed for a short time, sufficient to operate the solenoid. An indicator arm 19, Fig. 6, projecting through a scale plate 20 is driven by a snail cam 37 on spindle 36 and indicates which of the switching positions the shaft is in. The switch can also be operated manually by means of a lever 21 having a pawl 77 engaging a ratchet 76 on shaft 36. The shaft 36 may operate any number of contacts. Specifications 415,128 and 473,186 are referred to.
Patent GB-198036-A (GB)
Title: Improvements in fasteners for windows, doors and the like, or for other purposes
IPC: E05C3/04
Filed: 1922-02-21
Abstract: 198,036. Jones, G., and Davis, G. F. Feb. 21, 1922. Sash fasteners pivoted-arm type.-A fastener, of the kind in which a pivoted arm 1 has a spring catch 7 engaging a notch in the usual cam-plate 13 to retain the arm in locked position, has the catch 7 pivoted between the sides of a radial slot 6 in the operating knob 5, the lower edge 10 of the catch being shaped to abut against the arm to limit the outward movement of the) catch.
Patent GB-713435-A (GB)
Title: Mechanism for transmitting intermittent rotary motion to a table, platform or the like
IPC: A47F5/025
Filed: 1951-03-02
Abstract: 713,435. Ratchet gearing; locking rotary members. POWELL. H. V. March 3, 1952 [March 2, 1951]. No. 5057/51. -Class 80 (3) A horizontal rectangular table 8 for advertising, exhibiting or other purposes is intermittently rotated in 90 degrees steps about a vertical spindle 6 by the engagement with one of four abutments 17 thereon of a gravity-acting pawl 15 pivoted on a spring-biased lever 9 which is oscillated in a horizontal plane by a cam 4 geared to an electric motor 1. The cam 4 engages a roller on the lever 9 to swing it about the spindle 6 until at the peak of the cam the pawl 15 trips into engagement with one of the abutments 17, whereupon, in the dwell of the cam, a spring 10 quickly returns the lever 9, thereby rotating the table through 90 degrees. In order to prevent. overrunning a stop lever 19 pivoted on a horizontal axis to a fixed pillar 18 coacts with an abutment 17 and is controlled by an arm 14a of the lever 9. A spring-biased arm 22 pivoted on a vertical axis to the pillar 18 carries a rubber-tyred roller which successively engages the corners of a restangular track 8a on the table 8 as the latter is rotated and thus ensures 90 degrees positionings. It is stated that the table may be other than rectangular and that the positionings may be other than 90 degrees. The sides of the apparatus may comprise illuminated panels.. According to the Provisional Specification a stop lever co-operates with buffers between the abutments 17.
Patent GB-1165871-A (GB)
Title: A Method of Producing a Coating having a Low Coefficient of Friction, and Friction Members provided with such Coating
IPC: F16C33/12
Filed: 1968-01-31
Abstract: 1,165,871. Bearings. PNEUMATIQUES, CAOUTCHOUC MANUFACTURE ET PLASTIQUES KLEBER-COLOMBES. 31 Jan., 1968 [6 Feb., 1967], No. 5063/68. Heading F2A. [Also in Division C7] A coating with a low coefficient of friction deposited on a metal surface, e.g. steel, to form a bearing, joint or shaft is produced by flame spraying Mo on to the surface, impregnating the Mo with a liquid hydrocarbon and heating to carbonize the hydrocarbon. The liquid hydrocarbon may be a de-gummed linseed oil containing in suspension 10-20% of graphite, carbon black or semi-graphite.
Patent GB-841044-A (GB)
Title: Improvements relating to hasp fittings for luggage and like boxes
IPC: E05B65/50
Filed: 1956-02-18
Abstract: 841,044. Hasp fastenings. CHENEY & SON Ltd., C. W., and CHENEY, C. W. Feb. 13,1957 [Feb. 18, 1956], No. 5089/56. Class 44. A hasp fitting for expansible luggage and like boxes of variable capacity comprises an attachment plate 5 provided with longitudinally directed guides, a slide 1 engaging said guides, a hasp 8 hinged to said slide so that the hasp can swing under the action of a spring 14 away from the attachment plate into a pre-determined angular position and can be moved against its spring in proximity to the attachment plate, the former position permitting the slide to move freely in either direction in the said guides, whereas the latter position brings into use a one way ratchet mechanism between the slide and the attachment plate whereby movement of the slide in one direction is arrested, the slide projecting above the outer face of the attachment plate and having side walls 2 which fit within corresponding side walls of the hasp which is hollow whereby the side walls of the slide serve as abutments to the hasp and operate to prevent lateral displacement of the hasp whatever its angular position. The hasp is hinged to the slide by means of a pin 7 on which the spring 14 is mounted and the pin also serves as a mounting for a spring loaded pawl 18 which is engageable with a central line of ratchet teeth 19 on the attachment plate 5, the pawl and the teeth forming the ratchet mechanism. A tail 20 of the pawl is accommodated in a groove 21 in the end of the hasp 8 and raising the hasp lifts the pawl away from the ratchet teeth so that the slide can be moved in either direction. The end of the hasp engages aligned grooves in the slide to limit its outward movement.
Patent GB-957092-A (GB)
Title: Improved duct assembly for conducting a flow of fluid, particularly coolant fluid for a dynamoelectric machine
IPC: H02K5/24
Filed: 1961-02-10
Abstract: 957,092. Dynamo-electric machine casings. GENERAL ELECTRIC CO. Feb. 10, 1961 [Feb. 11, 1960], No. 5120/61. Heading H2A. In a gas-cooled, turbo-generator with a stator casing closed at its end by an air shield having a hole through which the rotor passes, vibrations of this shield in resonance with the forcing frequencies of the machine parts is largely eliminated by increasing the natural frequency of the shield. This is achieved by using outer -and inner shields 5, 6 screwed to radial walls 3a, 3b of the stator casing 3 and mutually braced by two sets of narrow tubes 15, 16 secured near to the outer and inner peripheries of the shields at 18, 21 and 17, 20 and welded at 24 where they cross. The inner point of attachment should preferably be on a nodal circle of the shield (assuming free vibration) to give maximum effect. The outer shield 5 is made of three concentric sections 12, 13, 14, whose thicknesses are in the ratio 3 : 5 1 to further increase its natural frequency. Various modes of vibration of a disc supported at its periphery are illustrated in Figs. 3-5 (not shown).
Patent GB-935652-A (GB)
Title: A winding member for an electrical rotating machine of the flat annular air-gap type
IPC: H02K23/54
Filed: 1960-02-12
Abstract: 935,652. Dynamo-electric machines having printed windings and planar air-gaps. SOC.D'ELECTRONIQUE ET D'AUTOMATISME. Feb. 12, 1960 [Feb. 12, 1959], No. 5141/60. Class 35. In a winding member for an electrical rotating machine of the flat annular air-gap type and comprising a discoidal insulating member 31 having its two flat surfaces coated with patterns of conductors 33 which have circular inner and outer boundaries 34, 35, interconnections between each conductor on one surface and appropriate conductors on the other surface comprise conductive coatings 36 . . . 38 bounding apertures through the member 31 and disposed in circular rows 39 . . . 41 near the boundaries at least two rows 40, 41 being near one boundary. As shown, the two rows are at the inner boundary 34 to which alternate conductors 33 extend and are interconnected by the innermost row 41, whilst intervening conductors stop short of the boundary and are interconnected by the other inner row 40. The winding member may be the armature of a D.C. motor or generator or the field of an A.C. motor, and the conductors are printed, plated or etched. As shown in Fig. 3a, the insulating member 31 is a thin polyester sheet supported by a circular insulating member 31a cemented to one face of the conductors, but alternatively the member may be thick enough to be rigid and self-supporting, or it may comprise a central conductive core to provide eddy-current damping, covered by insulating material. A D.C. motor embodying the armature 30 comprises a stator having six alternately poled permanent magnets 15, 18 &c. to which are attached six polepieces 15a, 18a &c. and a ferromagnetic ring 21a. Specifications 874,394, 898,337 and 902,295 are referred to.
Patent GB-547637-A (GB)
Title: Process of making smooth surface fibrous article
IPC: D21J1/08
Filed: 1941-04-23
Abstract: 547,637. Moulding bonded fibre sheets &c. BURKART MANUFACTURING CO., F., April 23, 1941, No. 5237. Convention date, April 25, 1940. [Class 87 (ii)] [Also in Group VIII] A mat of long fibres such as sisal has applied to its surface a thermo-setting or thermoplastic bonding material in such quantity that the dry weight of the bonding material is less than the weight of the fibre and is then consolidated into a shatterproof sheet &c. by heat and pressure. The loose fibre matting A<SP>1</SP> is fed by rolls 6 and belt 5 between apertured plates 3, 4 where it is needled by barbed needles 2 causing some of the fibres to be pushed through the mat in the form of loops 8 resulting in a stiffer mat A<SP>2</SP> of reduced thickness. Bonding material is then applied to the mat in limited quantity, by the liquid resin glue spreader, Fig. 6, comprising corrugated rubber-covered rolls 10, idler rolls 11 and pipes 12 for supplying liquid resin 9 to the troughs formed by the spreader and idler rolls, suitable resinous materials being urea-formaldehyde, phenol-formaldehyde laminating varnishes, vinyl resin solutions, natural gums, latex emulsions, recovered rubber dispersions, casein or casein-blood albumen solutions. A suitable blank of the material is cut and consolidated by heat and pressure into a sheet &c. A<SP>3</SP>, Fig. 8. The bonding material may contain fillers such as wood flour, wheat flour, silica, china clay, calcium carbonate. Two or three of the needled mats may be coated on the outer surfaces with the bonding material and compressed into laminated sheets.
Patent GB-562747-A (GB)
Title: Improvements in or relating to handles for buckets, cans, garbage containers and thelike
IPC: B65D25/28
Filed: 1943-04-01
Abstract: 562,747. Buckets, cans, &c. SINCOCK, R. J. E. April 1, 1943, No. 5257. [Class 66] Handles 1 of the form shown are provided with depending limbs 2, 3, slidable through guides 6 on or attached to the wall of a can, bucket, garbage container or the like. Stops to limit the movement are provided by crankings or offsets 4 and 5, or the last-mentioned offsets may be replaced for instance by nuts attached to the threaded lower ends of the limbs. Specification 558,388, [Group I], is referred to.