baber/WOPTO huggingface dataset:
Patent GB-672396-A (GB)
Title: Lock nut and method of making the same
Inventor: TRIPP CHESTER DUDLEY
IPC: F16B39/286
Filed: 1950-03-22
Abstract: 672,396. Making lock-nuts. GRIP NUT CO. March 22, 1950, No. 7192/50. Classes 83 (ii) and 83 (iv). [Also in Group XXV] in the manufacture of lock-nuts triangular depressions 23, 25, 27, Fig. 3, are pro. duced in the top faces of the nuts by a punch having plane faces 35, 36, 37, Fig. 5, ground to an angle of 77¢ degrees, Fig. 6, with the axis and intersecting in radial lines 38 spaced at 120 degrees. The angle shown as 77¢ may vary from sixty to eighty-two degrees. The nut may be grooved to provide a weakened section 17 that compresses under the punch pressure and throws the threads, in the top end of the nuts, out of lead. The punch may be ground with six faces spaced at sixty degrees apart. In a modification the punch may be ground with a central flat surface 67 perpendicular to the axis to produce depressions, in the nuts, having flat V-shaped bottoms. U.S.A. Specifications 2,336,023 and 2,352,668 are referred to.
Patent GB-112374-A (GB)
Title: Covered Writing or Drawing Slates.
Inventor: ROBERTSON ROBERT
IPC: B43L1/02
Filed: 1917-05-19
Abstract: 112,374. Robertson, R. May 19, 1917. Slates.-A drawing or tracing slate has the end A<1> of the frame made thinner than the end and sides A, two thin flush covers B being arranged to slide over and protect the slate. The inner faces of the covers are surfaced for use with chalk, crayons, &c., or useful matter may be printed on them.
Patent GB-564168-A (GB)
Title: Improvements in or relating to field and like gates
IPC: E06B11/02
Filed: 1943-05-07
Abstract: 564,168. Gates. STUBBS, E. A. May 7, 1943, No. 7257. [Class 45] A field or like gate has an end column 13 which is pivoted about a block 11 and a recessed foot stump 15, and is considerably higher than the height of the gate portion proper. The block 11 projects laterally from the top of a supporting post 10, and the bearing surfaces in tha recess 14 of the stump 15 may be coned. Two parallel tie-bars 16 extend downward from the top of the column 13 to the bottom of the outer stile 18, and are fixed to both these members and to each of the horizontal bars-17 of the gate. A latch 20, vertically slidable on a post 19, takes over a stud 22 on top of the stile 18. The inner ends of the bars 17 are preferably dovetailed and pegged to the column 13 or may be indirectly fixed thereto. The structure may be made of wood, metal, &c., and a concrete &c. block may be bedded in the ground with an upstanding portion to act as a gate-stop.
Patent GB-745349-A (GB)
Title: A surface coated with a paint comprising an undercoat of chlorinated rubber and an overcoat of polyvinyl acetate
Inventor: PIERARD CHARLES ATHOL
IPC: B05D7/26
Filed: 1952-03-20
Abstract: Surfaces are coated with a decorative or protective paint comprising a chlorinated rubber undercoat adherent to the surface and superimposed thereon a polyvinyl acetate film physically and chemically compatible with the undercoat.  The chlorinated rubber may be applied as a solution to which alkyd resins, drying oils such as linseed or tung, perilla, oiticica and the like or chlorinated paraffins, may be added; either layer may contain plasticizers, pigments, extenders and fillers.  The polyvinyl acetate may be applied as a solution or as an emulsion.  In examples, a medium composed of chlorinated natural rubber, "Paralac" (Registered Trade Mark), and xylol, is pasted with anatase type titanium dioxide and sharp-particle silica of particle size between 0.7 and 30 microns more medium then being incorporated; in another formulation the medium also contains dibutyl phthalate.  In a further formula, a mixture of chlorinated rubber, chlorinated paraffin and xylol is suitably pigmented and mixed with diatomite.  The polyvinyl acetate may be in the form of a clear film obtained by coating with, e.g. a solution of polyvinyl acetate, butyl acetate and dibutyl phthalate in xylol; or with a plasticized polyvinyl acetate emulsion.  The solutions of polyvinyl acetate may be pigmented by known methods; in pigmenting emulsions, the pigments are pasted with a solution of gum acacia in water, or with water and a suitable wetting agent, and the paste added with stirring to the polyvinyl acetate emulsion.  In exemplary formulae, a pigment which may be rutile titanium dioxide, is incorporated in a polyvinyl acetate emulsion, plasticized with dibutyl phthalate.  The coatings may be applied by brushing or spraying.
Patent GB-254648-A (GB)
Title: Improvement in drill sharpeners
IPC: B21K5/06
Filed: 1926-03-16
Abstract: 254,648. Ingersoll-Rand Co., (Assignees of Peters, A. E.). Dec. 17, 1925, [Convention date]. Forging and sharpening rock-drills.- In a machine for sharpening drills by forging, a cylinder integral with the anvil block ha.s a piston which is secured to the upper block by means of a pair of vertical columns, and transverse movement of the upper block is prevented by means of guide columns anchored to the anvil block. The cylinder C is formed integrally with the base B, which also supports the anvil block E provided with the cylinder G whose piston H carries an extension J working in the raising-cylinder J. A pair of columns K secured to the piston H are adapted to slide through sleeves L in the anvil block and are clamped to the upper block at their upper ends by means of nuts Q. The admission of pressure fluid to the cylinders C and G is controlled from a lever T. The adjacent faces U, V of the anvil block and upper block respectively are formed with recesses for the reception of forming dies Y, Z, which mav be adapted to form the bit end of the drill. Additional sockets c, d may be formed to receive knives e, f. For forming the cutting-bit, a cylinder g secured to the anvil block mav be provided with a hammer piston adapted to deliver blows on a forming-dolly h. The guide columns k are secured by pins q to recesses in the anvil block and are arranged to slide in bushed holes r in the upper block.
Patent GB-196772-A (GB)
Title: Improvements in or relating to convertible motor car bodies
IPC: B60P3/42
Filed: 1922-03-13
Abstract: 196,772. White, H. P., Watts, A. W., and Duple Bodies & Motors, Ltd. March 13, 1922. Vans; doors, van; tailboards; hoods and opening tops.-In a motor-car body of the kind provided with a driver's seat, one or more passenger seats at the rear of the driver's seat, and at least one side entrance f to the passenger seats, an opening is provided at the back of the body adapted to be closed by a door or tailboard g hinged at h, or by detachable cover, and the car is adapted to be fitted with a detachable body top j having one or more doors k at the back. When a detachable cover is used to close the rear opening in the car body, the doors k are extended downward to close the entire opening at the back of the covered vehicle. Eyelets m are provided to facilitate the lifting off of the top j by a rope and pulley. The passenger seats are removable so that the car fitted with the top j can be used as a van. The means for securing the top j to the car body and the fittings for a folding hood, with which the car is provided, are as described in Specification 166,353. By removing the passenger seats and also the top j, the car can be used as an open lorry.
Patent GB-927602-A (GB)
Title: Improvements in or relating to circuit arrangements for synchronizing a relaxation oscillator
IPC: H04N5/12
Filed: 1960-03-02
Abstract: 927,602. Frequency control systems. PHILIPS ELECTRICAL INDUSTRIES Ltd. March 2, 1960 [March 5, 1959], No. 7399/60. Class 40 (5). A circuit for synchronizing the vertical deflection relaxation oscillator 6 of a television receiver includes a phase detector 4 supplied with square sync. pulses 3 and a comparison signal 9 derived from oscillator 6, and the oscillator 6 is controlled by means of a direct voltage from smoothing circuit 18 and triangular pulses from integrating circuit 16. Smoothing circuit 18 may be supplied directly with the output pulses 5 of detector 4, integrator 16 being fed with the sync. pulses 3, or the arrangement shown may be used. Triangular pulses 15 are in each case used to avoid the disadvantage of systems employing direct synchronization by square pulses that, since fly-back occurs on the leading edge of a synchronizing pulse, oscillator 6 becomes phase-locked to these pulses, and, independently of the initial frequency difference between the sync. pulses 3 and oscillator 6, detector 4 invariably produces the same output, thereby precluding readjustment. Signal 9 is obtained by inverting and limiting the output of oscillator 6, detector 4 producing output pulses 5 whose duration is dependent on the degree of coincidence of sync. pulses 3 with the flat portion of signals 9. An attenuator 17 is preferably included in the circuit and is controlled as follows. The sawtooth wave 7 is differentiated at 23 and applied to a phase detector 21 whose output pulses decrease in width as synchronism is approached, the output of smoothing circuit 24 controlling the attenuation of pulses 15 so that synchronizing pulses of large amplitude are applied to oscillator 6 when synchronism is lost, the amplitude of pulses 15 being reduced as synchronism is approached. The loop 23, 21, 24 reduces the probability of undesired fly-back being induced by interference when the system is synchronized.
Patent GB-896174-A (GB)
Title: Improvements in or relating to corrosion resistant refractory products
IPC: C04B35/00
Filed: 1960-03-02
Abstract: A refractory composition is produced by adding to a refractory material such as fireclay, silicon carbide or carbon a ferrous alloy slag with a particle size less than 0,2 mm. and containing at least one compound of vanadium, molybdenum, tungsten or uranium.  The melting point of the slag may be adjusted by fritting the slag with silica, or the oxides of the alkali or alkali earth metals and 0,5% to 10% by weight of slag with a Seger cone value of 15 to 40 is added to the refractory which is then fired.  Alternatively a suspension or slurry of the slag may be sprayed on to the refractory which is then fired.
Patent GB-1365841-A (GB)
Title: Casehardening of workpieces
IPC: C23C8/04
Filed: 1973-02-15
Abstract: 1365841 Protective shield during case hardening DAIMLER BENZ A G 15 Feb 1973 7495/73 Heading C7U A region of a workpiece is protected against sucessively deep case hardening during carburizing processes, which may be of the continuous gas carburization type, by a masking element of a glass ceramic material which can be worked with a tool. The ceramic material may have a specific gravity of about 2À54 g/cm<SP>3</SP>, a tensile strength of about 600 Kg/cm<SP>2</SP> at a temperature of 25‹C, a shear strength of about 240 Kg/cm<SP>2</SP>, a coefficient of linear expansion of about 63. 10<SP>-7</SP> /‹C for a temperature rise from 25‹C to 400‹C, a thermal conductivity of about 3À1K cals/ sec cm ‹C at 25‹C and may be resistant to heat up to 1200‹C. The ceramic element may be in the form of a ring comprising a cylindrical portion and a portion of the shape of an annular disc and may be used to prevent excessive carburization of gear change teeth on a gear change wheel, the ceramic ring having teeth which engage with the gear-wheel teeth to be masked.
Patent GB-907797-A (GB)
Title: Adhesive tapes
IPC: C09J7/50
Filed: 1961-03-01
Abstract: 907,797. Pressure-sensitive adhesive tape. NORTON CO. March 1, 1961 [March 31, 1960], No. 7503/61. Class 140. A pressure-sensitive adhesive tape comprises a non-fibrous film, a primer coat, and a rubber-based pressure-sensitive adhesive overlying the primer coat, the primer coat including (i) at least 20% total solids content by weight of a lower alkyl half-ester of a copolymer of styrene and maleic anhydride, and (ii) at least 15% total solids content of an elastomer which contains, in combined form, from 5 to 20% by weight of 2-vinyl pyridine, 4-vinyl pyridine, or lower alkyl derivatives thereof. Ingredient (ii) of the primer may be a terpolymer of vinyl pyridine, a 1-3 diene, e.g. 1-3 butadiene or isoprene, and another ethylene derivative, e.g. styrene, acrylonitrile or acrylates. The primer coat may also contain natural or synthetic rubber, e.g. an elastomeric terpolymer of butadiene, styrene and acrylonitrile, rosin, rosin derivatives, e.g. hydrogenated rosin, watersoluble urea and melamine resins, polyhydroxy compounds, formaldehyde, and polyamines. The backing may be transparent cellulosic film, e.g. regenerated cellulose, cellulose acetate, or a transparent hydrophobic film, e.g. polyvinyl or polyvinylidene chloride. Specifications 427,700, 427,702, 431,560, 514,402 and 790,155 are referred to.
Patent GB-567501-A (GB)
Title: Treatment of textile materials to reduce their tendency to felt
IPC: D06M13/342
Filed: 1943-05-12
Abstract: Textile materials composed wholly or partly of wool or other animal fibre, in the form of loose fibres, yarns, fabrics, or garments, are treated with anhydro-carboxyglycine in order to reduce their tendency to felt when washed in aqueous liquor.  The materials are treated with a solution of anhydrocarboxyglycine in an organic solvent, such as ethyl acetate or acetone, by dipping, spreading or spraying, and the solvent is removed by washing, or by drying in air at room or elevated temperatures.  The treated materials may be subjected to a baking operation at, for example, 90 to 100 DEG  C., or, alternatively, the materials may be treated in a heated solution of anhydro-carboxyglycine.  Examples are given.
Patent GB-928616-A (GB)
Title: Primary stage for a two-stage hydraulic relay valve
IPC: F15B13/043
Filed: 1961-03-01
Abstract: 928,616. Fluid-pressure servomotor control systems; valves. RECHERCHES ETUDES PRODUCTION R.E.P. March 1, 1961 [March 2, 1960; Feb. 16, 1961], No. 7560/61. Class 135. The first stage of a two-stage hydraulic relay valve comprises a magnetic plate actuated by a torque motor and mounted on a torsion tube and connected by a shaft disposed in said tube to a flapper plate which co-operates with at least one pair of nozzles connected respectively to chambers of the second stage value and to fluid under pressure. In the first example, Figs. 1 and 2, the magnetic plate 1 is actuated by a torque motor comprising two parts 4, 5 which define air gaps 2 and 3 in which the plate 1 is located, the parts 4, 5 being polarized by a permanent magnet 6 and the plate 1 being embraced by two signal-receiving coils 7 and 8. The plate 1 is fixed by a screw 13 to a tube 11 and a shaft 10 which are also fixed by a screw 14 to a flapper plate 9. The tube 11 is integral with a fixed support member 12 and the flapper 9 co-operates with two pairs of nozzles 15, 16 and 17, 18 connected as shown in Fig. 1 to the chambers 21, 22 of the second stage valve 23 and receiving fluid under pressure via orifices 24, 25. The provision of two pairs of nozzles provides inherent damping of parasitic vibrations. The parts are assembled as shown in Fig. 3. In another example, Fig. 8, only one pair of nozzles 16, 17 is used and the flapper plate 9 is connected to a fixed support 32 by a thin plate 31 which damps parasitic vibrations.
Patent GB-439862-A (GB)
Title: Installation for the distant operation of one or more preselective variable speed mechanisms
IPC: F16H61/02
Filed: 1934-03-09
Abstract: 439,862. Controlling change - speed gearing. WERKSPOOR NAAMLOOZE VENNOOTSCHAP, 62, Oostenburgermiddenstraat, Amsterdam. March 9, 1934, No. 7562. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 14, 1934]. [Class 80 (ii)] Comprises change-speed gear control mechanism in which, for each speed change, a separate cam slide such as 12, Fig. 2, is moved by the effort of compressed air under the action of a selective electric keyboard. To' change from first speed, which corresponds to the depression of a key 51, Fig. 1, to second speed, a key 52 is depressed. This energizes a solenoid 42 thereby raising an armature 35, Fig. 2. This lifts a valve 27 and causes compressed air entering at 37 to pass along a duct 38 and press upon a piston 25, raising it. This lifts the selected cam slide 12. A tail 22 of the slide 12 strikes a pin 15 thereby tilting a shaft 17 and disengaging the first speed. As the slide 12 rises, it passes over a bowl 6 which is thus moved rightwardly of Fig. 2 into a branch slot 82 thereby tilting a shaft 9 and preparing the second speed for engagement by suitable means, in the change-speed gearing, not shown. At the end of the upward stroke, a lug 45 on the tail 22 strikes and opens a switch 62 so breaking the electric circuit. The valve 27 is returned downwards by its spring and the slide 12 follows, depressing the pin 15 which completes the speed change again by suitable means (not shown). On the completion of the downward stroke, a second lug 49 carried by the slide 12 resets the switch 62 ready for another change. Changes into third and fourth speeds are similar, there being five cam slides 10, 11, 12, 13, 14. On depressing a key 50, the slide 10 is raised and the pin 15 disconnects the speed previously in use without preparing another to come in, so that this key brings in neutral or no drive.
Patent GB-350479-A (GB)
Title: Improvements in the electrolytic manufacture of chlorine
IPC: C25B9/19
Filed: 1930-03-07
Abstract: 350,479. Electrolysis. LOW, F. S., 415, Lexington Avenue, New York, U.S.A. March 7, 1930, No. 7563. [Class 41.] Chlorine and hydrogen, obtaining.- A concentrated aqueous solution of hydrochloric acid is electrolvzed in a cell having a submerged pervious screen 4 separating the anode 7 and cathode 11 ; gaseous hydrochloric acid is introduced by a pipe 12 on the cathode side of the screen. In the apparatus shown, the anode is annular and the cathode is drum-shaped and is provided near the top with passages 13. The cathode may be of graphite, silver, lead or a lead-silver alloy, and the anode of graphite. The top 10 of the drum 11 may be replaced by a spider structure. The cover 8 and cap 2 may be of stoneware or moulded glass or of concrete protected with bituminous cement or paint. Water is supplied by a pipe 15 and serves to scrub the hydrogen leaving by pipe 14. A similar arrangement may be provided for the chlorine leaving by the pipe 5, but is not necessary in view of the provision of external purifying means. The cell is provided with an overflow 16. The electrolyte may contain 20 per cent HCl, and is preferably maintained at about 10 C. below the boiling point by the current.
Patent GB-197130-A (GB)
Title: Improvements in supply taps for soda fountains and the like
IPC: F16K11/16
Filed: 1922-03-16
Abstract: 197,130. Pompa, V. March 16, 1922. Dispensing liquids.-In a pair of interconnected valves controlling the supply of two liquids to the common discharge nozzle of a soda fountain or the like, the delivery pipe for one liquid is disposed within the delivery pipe for the other liquid. A plug cock 1 controlling the supply of soda water is provided with a spindle 2 having an arm 21 formed with a cam surface 22. A disc valve 13 controls the supply of syrup and its spindle 19 is automatically depressed by rotation of the cam member 22 and spindle 2. The two valves are mounted in supply conduits 6, 8, having a common outlet nozzle 5, and the delivery pipe 11 of the disc valve extends through the greater part of the nozzle 5. Tha first move. ment of the handle 3 opens the valve 13 gradual. ly, and when fully open the valva 1 commences to open. A movement of the handle in the opposite direction opens the valve 1 only.
Patent GB-978997-A (GB)
Title: Improved thermoplastic recording structure
IPC: G03G5/022
Filed: 1963-02-26
Abstract: 978,997. Electrostatic recording. AMPEX CORPORATION. Feb. 26, 1963 [March 23, 1962], No. 7731/63. Heading G5R. To prevent deflection of an incident bombarding or interrogating beam of electrons by previously set-down surface charges, a thinner metallic layer 20 is applied to the outer surface of a thermoplastic recording layer 12, in turn carried by a base layer 22. The layer 20 follows the undulating record contours developed by known means in the layer 12 and reduces surface charges to a level low enough to permit substantially undeviated access by the electrom beam. The layer is thin enough to allow ready penetration by the electron beam or by an optical playback beam which may be used as described in Specification 943,870.
Patent GB-672636-A (GB)
Title: The production of sulphur trioxide by the contact process
IPC: C01B17/80
Filed: 1950-03-28
Abstract: <PICT:0672636/III/1> In the production of sulphur trioxide by the catalytic oxidation of sulphur dioxide wherein the gases are passed through a plurality of catalyst layers disposed in a cylindrical converter and wherein stepwise indirect cooling of the product gas is effected by air or sulphur dioxide product gas from the first and second catalyst layers is withdrawn and cooled in external tubular non-contiguous heat exchangers before being passed to the next succeeding layer and product gas from the subsequent catalyst layer or layers is cooled in annular heat exchangers encircling the converter shell before being passed to the succeeding catalyst layer. As shown, SO2 containing gas enters the converter at the top and then passes through the first catalyst layer 2.  The gaseous product is withdrawn at 11, passed through an external tubular heat exchanger (not shown), in countercurrent to fresh SO2 and returned at 12.  The gases are then passed through catalyst layers 3a, 3b and again withdrawn at 13, passed through a similar external heat exchanger and returned at 14.  The gases then pass through another catalyst layer 4, then through the jacket of an air-cooled tubular cooler 7 surrounding the converter and finally through the catalyst layers 5a, 5b being withdrawn at 15.
Patent GB-214410-A (GB)
Title: A safety motty
IPC: G09F3/03
Filed: 1923-03-19
Abstract: 214,410. Hobson, S. March 19, 1923. Securing holders. - An ordinary miners' motty C is attached by a band D to a second motty B in the form of a ring provided with a gap to enable it to be engaged with an eye A bolted to the inside of the coal corf E, the gap being so narrow as. only to pass a thin web H in the eye. In use, the band D passes through an aperture K in the side E of the corf so that the motty C hangs on the outside thereof.
Patent GB-579479-A (GB)
Title: Improvements in or relating to ferrous alloys
IPC: C22C19/05
Filed: 1944-04-26
Abstract: 579,479. Hard facing alloys. ARNOLD, J. C. (Coast Metals, Inc.). April 26, 1944, No. 7795. [Class 82 (i)] Alloys which are suitable for hard facing purposes and can be used in the form of weld rods, contain 1-4.6 per cent of carbon, 20-30 per cent of chromium, 7-30 per cent of molybdenum, 13-17 per cent of nickel, 10-30 per cent of cobalt, the remainder being iron :and normal impurities. A particularly! useful alloy contains 2.5 per cent of carbon, 25 per cent of chromium, 8 per cent of molybdenum, 15 per cent of nickel, 25 per cent of cobalt, the remainder being iron.
Patent GB-1494082-A (GB)
Title: Viewing devices
IPC: G02B7/24
Filed: 1974-02-20
Abstract: 1494082 Optical viewing SOCIAL SERVICES SECRETARY OF STATE FOR 19 Feb 1975 [20 Feb 1974] 7815/74 Heading G2J A viewing device for attachment to an optical instrument (e.g. a periscope, endoscope or conventional cytoscope 10) comprises tubes 18A, B; 26A, B and 36A, B connected by swivels 24A, B and 34, each having a coaxial rotary joint 20, 32, 38 and a remote eye-piece 44 attached to the tubes by a further joint 40 so that, in use, the eye-piece 44 may lie in any direction relative to the incoming beam of light from the instrument.  A beam-splitter may be provided in a housing 12 having a window 14 affording a direct view through the instrument 10 in addition to the view at the eye-piece 44.  An optical system for the viewing device, comprising 12 lens components and 7 prisms is fully defined in a table of optical data.