baber/WOPTO huggingface dataset:
Patent GB-492833-A (GB)
Title: Improvements in the manufacture of electric cables
IPC: H01B13/30
Filed: 1937-05-24
Abstract: 492,833. Impregnating compositions for electric insulation. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., OSBORNE, T. L., and VINCENT, R. S. May 24,1937, No. 14425. [Class 140] In making an impregnated paper-insulated cable, the paper is dried prior to the impregnating process by subjecting it to heat and vacuum in the presence of rosin as described in Specification 492,832 and subsequently impregnated with a cable impregnating compound containing rosin, which may take place after its application to the conductor.
Patent GB-1221755-A (GB)
Title: Stop pin retracting means for ten key calculating machine
Inventor: CLARY JOHN GERDS
IPC: G06C7/10
Filed: 1969-03-19
Abstract: 1,221,755. Ten key calculating machine. ADDMASTER CORP. 19 March, 1969 [24 April, 1968], No. 14452/69. Heading G4B. A ten key cyclically operated calculating machine having differential actuators 26 and a movable stop-pin carriage 13 has co-operating surfaces 61, 62, respectively, on the actuators and pins 14 which cam set-pins from their set positions so as to enable the carriage to move back to its original position before the actuators have been fully retracted. The machine is a modification of that disclosed in Specifications 971,662 and 975,856. Each actuator 26 has a chamfered edge 61 as have two adjacent gear teeth 35 at point 59 so that the edges engage with the chamfered edges 62 of the set stop pins 14 and the pins are cammed over the actuators. Where a pin is not cammed by an actuator it is cammed into its retracted position by a stationary cam member on the machine frame.
Patent GB-676978-A (GB)
Title: Improvements relating to iron alloys for casting
IPC: C22C38/36
Filed: 1949-05-30
Abstract: An iron alloy for casting consists of 9-13 per cent Cr, 0.5-3 per cent V, 0.5-6 per cent W, 0.5-3 per cent Co, 0.5-2 per cent Mo, 0.5-2.5 per cent C and 0.2-1 per cent Ti, the remainder being iron, wherein the Cr content is at least 25 per cent higher than the sum of the V, W, Co, Mo contents.  An example of 12 per cent Cr, 2.5 per cent V, 4 per cent W, 1 per cent Co, 0.2 per cent Ti, 2 per cent Mo, 1.6 per cent C, remainder iron is given. The Specification as open to inspection under Sect. 91, comprises also steel alloys containing at least two elements of the group Cr, W, Co, Mo and V, at least one of these elements being Cr in a proportion 6-15 per cent, which is greater than the sum of the contents of other elements of this group, and at least one element of the group Ti, Ta, Be, Si and Cu and a C content of 0.5-3 per cent.  Examples of such compositions are Cr 12 per cent, V 2.5 per cent, W 4 per cent, Co 1 per cent, Mo 2 per cent, Ta 1 per cent, C 1.6 per cent, Fe remainder; Cr 9 per cent, V 2.5 per cent, W 3 per cent, Co 2 per cent, Mo 1 per cent, Ti 1 per cent, C 2 per cent, Fe remainder.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1031885-A (GB)
Title: Hydraulic tappet
Inventor: GREEN DEREK BERNARD
IPC: F01L1/245
Filed: 1963-04-11
Abstract: 1,031,885. Hydraulic tappets. FORD MOTOR CO. Ltd. March 2, 1964 [April 11, 1963], No. 14496/63. Heading F2K. [Also in Division F1]  In an hydraulic tappet 1, for a valve operating linkage of an I.C. engine, a spring 35 urges a piston 34 against a flexible wall of a liquid-filled sealed chamber, divided by a plate 25 and an adjacent diaphragm 23 into a pressure compartment 31 and a reservoir 33, to urge liquid from the reservoir into the pressure compartment so as to take up clearances in the valve operating linkage. Cups 17, 19, defining the pressure compartment 31 and the reservoir 33, respectively, are clamped by their flanges 21 against opposite sides of the plate 25 between a shoulder 9 in the body 3 of the tappet and the inner end of an annular extension of the tappet head 5, the diaphragm 23 being clamped between the plate 25 and the cup 17. A second piston 39, against which bears a push-rod, bears against a flexible wall of the pressure compartment 31. An orifice 27 in the diaphragm 23 is out of alignment with bores 29 through the plate 25. Liquid may flow between the compartments 31, 33 in either direction, when the engine is stationary, to allow for expansion or contraction of the valveoperating linkage. In normal speed running of the engine the pressure in the pressure compartment 31 holds the diaphragm against the plate 25, preventing liquid flow so that the tappet is virtually solid. At low engine speeds, during valve lifting a short time elapses after the start of the stroke before the diaphragm closes, allowing slight lost-motion to give slightly delayed valve opening at low speeds. In Fig. 4, the second piston 39 is replaced by a ball. The piston 39 may include a shoulder which engages the tappet body in the event of a fluid leakage from the sealed chamber, to enable the valve operation to be maintained.
Patent GB-189064-A (GB)
Title: Improvements in and relating to insulator supports
IPC: H01B17/20
Filed: 1922-05-23
Abstract: 189,064. Schmitt, L. May 23, 1922. Brackets, securing.-For supporting insulators. a bracket is employed which is adapted for being fixed either in masonry or in wood. It is madewith a slitted screwed stem which can be screwed into wood, or opened by a chisel so as to form a barbed hook when it is to be embedded in masonry.
Patent GB-529064-A (GB)
Title: Improvements in or relating to band pass filters
IPC: H03H7/01
Filed: 1939-05-16
Abstract: 529,064. Impedance networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and BRAILSFORD, J. D. May 16, 1939, No. 14576. [Class 40 (iii)] In a band-pass filter comprising two (or more) tuned circuits L<SP>1</SP>, C<SP>1</SP>, L<SP>11</SP>, C<SP>11</SP>, Fig. 2, coupled by a shunt reactance X1, the width of the acceptance band is altered in a symmetrical fashion about the mid-frequency by varying simultaneously the coupling reactance X1 and a pair of equal reactances X2 in the series arms in such a way that X1+X2 remains constant. In Figs. 3, 4 the reactances take the form of capacities and inductances respectively, with a number of tapping points which are bridged selectively by switches S. In Fig. 5 the tapped capacity arrangement is combined with auxiliary inductances LX<SP>1</SP>, LX<SP>11</SP> mutually coupled in the negative sense, the degree of coupling being varied simultaneously with the capacity variation. The individual circuits are tuned by means of the condensers C<SP>1</SP>, C<SP>11</SP>. In Fig. 6, the variation is effected continuously instead of in steps by means of suitably shaped condensers X1, X2<SP>1</SP>, X2", together with additional fixed shunt condensers CX<SP>1</SP>, CX<SP>11</SP>. In this arrangement the variable condensers may be at a distance from the filter and connected thereto by a pair of screened leads.
Patent GB-625819-A (GB)
Title: An angler's landing net
IPC: A01K77/00
Filed: 1946-05-14
Abstract: 625,819. Fishing. CHARBONNIER, R. May 14, 1946, Nos. 14598 and 14599. Convention dates, May 31, 1945, and March 27, 1946. [Class 48] The net part 2 of a folding landing net is supported by two arms 1 guided by a stop 9 and hinged to a member 4 sliding on a tube 5 carrying the stop, the member being urged to the open position by a spring 7 and being held in the closed position by a catch 18 located at the end of the tube remote from the stop. The catch is mounted on a rod 6 telescopic within the tube. In the closed position the net is held against the tube by a ring on the net engaging with a catch 21. A spring 11 on the stop holds the member in the open position. In a modification a protective cover for the net is mounted on a wire frame hinged to the rod adjacent the catch 18. Specification 598,315 is referred to.
Patent GB-812431-A (GB)
Title: Tube coupling and seal
Inventor: HERMAN ALBERT DALE
IPC: F16L23/10
Filed: 1956-05-10
Abstract: 812,431. Pipe Joints. AEROQUIP CORPORATION. May 10, 1956, No. 14626/56. Class 99(1). A pipe joint comprises flanges 31 with cutting edges 33 which are forced into a sealing ring 13 of softer material than the edges 33 when the flanges are forced together by a surrounding tightening band 27. The flanges 31 are welded to the ends of the pipes 10, 10<SP>1</SP>, and may be either machined from solid metal or formed by rolling inwardly the end of a tubular blank. The edges 33 dig into the sides of the rib 36 of the ring 13 and the corners between the rib 36 and ring part 34 may be recessed to avoid jamming. In a modification, Fig. 9, the flanges 31 contact corners 46 formed by recesses 38b in the rib part 36b and, when forced together, pivot about the corners 46 to force the edges 33 to cut into the ring part 34b. Specification 746,789 is referred to.
Patent GB-272214-A (GB)
Title: Method of and means for working bright annealing furnaces
IPC: C21D1/767
Filed: 1927-05-31
Abstract: 272,214. Siemens Elektrowarme-Ges. June 3, 1926, [Convention date]. Cooling charges; gases, supplying. - In an annealing-furnace in which the charge 1 is heated in an atmosphere of inert gas the charge is cooled, on the termination of the heating process, by a thermo-syphon circulation of the inert gas through the furnace 2 and a cooler 6, valves 5, 5a in the gas outlet V inlet pipes 4, 8 being kept closed until the annealing temperature is reached. The cooler 6, which may take the form of a second cold furnace, is provided with a drip-pipe 7 for taking off condensed vapours.
Patent GB-801918-A (GB)
Title: An apparatus for applying a bayonet cover or a threaded cover to a container in the interior of which a vacuum shall be present when the cover has been applied thereto
IPC: B67B3/24
Filed: 1957-05-08
Abstract: 801,918. Applying closures to containers in vacuo. SONDERBYS FABRIKER AS. May 8, 1957 [Sept. 10, 1956], No. 14686/57. Class 125(2). In apparatus for applying bayonet or screw caps 32 to containers 33 in which a vacuum bell 2 mounted on a guide rod 1 encloses the container on its support 4, the lower end of the guide rod is provided with means to hold the cap, the container can be rotated relative to the cap, and clamping means for the container are actuated by the vacuum within the bell. As shown the clamping means comprise resilient pads 31 carried on the rods of pistons working in cylinders 27 the outer ends of which are open to atmosphere. When the bell is under vacuum, the pistons are drawn in so that the container is clamped. When the vacuum is broken, light springs retract the resilient pads. The upper part of the bell forms vacuum and vent chambers 10, 11 around the guide rod which is provided with passages 15, 34. The head forms part of a rotating table machine provided with a cam acting on a fork 6 to raise and lower the bell. Initially with the bell fully raised, outlet 36 of passage 34 communicate with vacuum chamber 10 so that a cap is retained by vacuum against a resilient ring 37 on the bottom of the guide rod. As the bell descends, the outlets 35 clear the chamber 10 and the cap is then held by a ring 17 mounted in a cup-shaped part 16 slidable on the lower end of the guide rod. Next, passage 15 communicates with vacuum chamber 10 and the bottom of the bell seals against the support 4 so that the bell is evacuated, thus actuating the clamping pads 31. A cam on the machine then rotates guide rod 1 by acting on an arm 41 so that the cap, gripped by ring 17, is screwed on. The stem 18 of support 4 then rides on to cam 40 so that the bell is lifted to put passages 15 in communication with vent chamber 11 so that the vacuum is broken. As the bell is raised once more to its highest position a flange 42 on the bell lifts the cup 16 slightly to open passage 43 thus ensuring that the passage 34 is vented. In a hand-operated modification, Fig. 1 (not shown), the guide rod is fixed and the support 4 and vacuum bell are rotated by a hand-lever which also raises the support slightly at the appropriate time to break the vacuum.
Patent GB-808776-A (GB)
Title: Improvements in or relating to self-centering chucks adaptable for holding objects of non-circular section
Inventor: LAWRENCE ERNEST GEORGE
IPC: B23B31/12
Filed: 1956-05-11
Abstract: 808,776. Chucks. RANK CINTEL Ltd. May 10, 1957 [May 11, 1956], No. 14703/56. Class 83 (3). In a chuck comprising a body 1, having arms 2-4 carrying jaws 2<SP>1</SP>-4<SP>1</SP> and pivoted to the body at 7, the arms are rocked in a transverse plane by rotation of a plate 13 carrying pins 29-31 engaging slots 33-34 in the arms. The plate 13 is rotated about the body 1 by a worm engaging peripheral teeth thereon, the worm being rotatable by hand at 18. Each pin 29 &c., Fig. 4, is an eccentric projection on a stud 23 rotatably adjustable in plate 13 and locked by a screwed bush 26 so that the jaw positions may be varied to accommodate non-circular work.
Patent GB-826065-A (GB)
Title: Process for waterproofing leather
IPC: C14C9/00
Filed: 1957-05-10
Abstract: A leather impregnant comprises an organic solvent solution of a condensation product of an alcoholate of a polyvalent metal and an acid organic derivative of a phosphorus acid containing at least six carbon atoms.  The polyvalent metal may be aluminium, titanium, zirconium or magnesium, and the alcoholate may be the ethylate, isopropylate, butylate, octylate, or dodecylate, or one the alkyl constituent of which contains other substituents such as halogen or one which still contains basic groups.  Mixed alcoholates may also be used.  Acid phosphorus acid derivatives which may be used include phosphoric acid mono-octyl ester, monooleyl ester, monotetradecyl ester, monoalkyl phenol esters (alkyl residue C13-C18), mononaphthenyl ester, monoabietyl ester, and mixtures of such esters with the corresponding diesters or with esters in which the alcohol residues are interrupted by hetero atoms or hetero atom groups or are substituted by hetero atom groups.  Instead of acid phosphoric acid esters, acid phosphoric acid alkylamides, or corresponding derivatives of alkylphosphonic acids or alkyl phosphinic acids may be used.  The reaction is generally effected in the presence of an organic solvent, if necessary with heating to 30-50 DEG  C.  The preferred molar ratio of phosphorus acid ester to alcoholate is 0.5-1.5 : 1.  The solvents used may be isopropanol, trichlorethylene, toluene, petrol, benzene or ligroin.  Small amounts of complex-stabilizers such as esters of hydroxycarboxylic acids, products with reactive methylene groups, hydroxy-oxo-compounds, acetylacetone, acetoacetic ester and oximes may be added to the solutions whereby the condensation products are stabilized against moisture.  In examples: (1) solutions in trichlormethylene, petrol, or toluene of 1 mol. of aluminium isopropylate and 0.7 mol. of a monoalkyl phosphoric acid ester containing alkyl residues C12-C18 are mixed and warmed; 6.1% of acetoacetic ester or acetylacetone may be added.  (2) The ester in (1) is replaced by monostearyl phosphate, the solvent being petrol.  (3) Solutions in trichlorethylene of 1 mol. of aluminium isopropylate and 1.5 mol. of monododecyl phosphate are mixed and stirred with heating; 0.1% of acetoacetic ester may be added.  (4) The phosphate in (3) is replaced by 0.7 mol. of mono-octylphenol phosphate, or (5), by 0.6 mol. of dicetyl phosphate, 1% of acetoacetic ester being added.  (6) Solutions in benzene of 1 mol. of titanium tetraethylate and 0.7 mol. of monoalkyl phosphate containing alkyl residues C12-C18 are stirred together and a small percentage of acetylacetone added.  (7) Solutions in trichlorethylene as in (1) are mixed and heated; about 30% of ethyl acetoacetate are added and the mixture heated for one hour to 65-70 DEG  C.  (8) Solutions in toluene of 1 mol. of aluminium propylate and 0.9 mol. of monotetradecyl phosphate are mixed and heated, 1 mol. of acetyl acetone is added and the whole heated for one hour to 60-90 DEG  C.
Patent GB-933393-A (GB)
Title: Calcium-silicon-iron alloys having a high calcium content, and the manufacture thereof
IPC: C22C33/00
Filed: 1960-04-28
Abstract: An alloy for use in refining iron and steel and containing .Ca.32-50% .Si.50-68% .Fe.0-10% .Al.0- 5% is produced by smelting in an electric are furnace a charge consisting of .SiO2.30-55% .CaO.20-45% .Carbonaceous. .reducing agent.15-45% The reducing agent is at least 50% bituminous material; metallic aluminum and/or iron may be added to the tapping ladle if insufficient results from impurities in the charge.  Before tapping, 0.001 to 10% of flux, based on the silica in the charge, is added, the flux consisting of one or more of fluorspar, granite or the oxides or halides of magnesium, alkali or alkaline earth metal halides.  Calcium carbide may also be added.
Patent GB-776100-A (GB)
Title: Shuttle propelling mechanism for looms
IPC: D03D49/42
Filed: 1955-05-24
Abstract: 776,100. Picking motions for looms. AMERICAN VISCOSE CORPORATION. May 24, 1955 [July 2, 1954], No. 14914/55. Drawings to Specification. Class 142 (2). The shuttle is propelled by the piston rod of an internal combustion engine cylinder. Specification 759,562 is referred to.
Patent GB-635344-A (GB)
Title: Process of coating and article for use therein
IPC: D06P5/24
Filed: 1946-05-17
Abstract: 635,344. Coated fabrics. SYLVANIA INDUSTRIAL CORPORATION. May 17, 1946, No. 14934. Convention date, May 18, 1945. [Class 140] [Also in Group XVI] A transfer, which is especially applicable for transferring thermoplastic films to coat entirely or in part surfaces such as fabrics or leather, is formed of a backing sheet of fibrous or non-fibrous sheet materials coated with a non-thermoplastic material such as a resin, a cellulose derivative, artificial or natural rubber. A coating material is chosen which has a thermal softening point between 100‹ and 300‹ C., e.g. 160‹ C. and the associated transfer film is chosen which has a thermal tacking point below the softening point of the coating material. The backing sheets may be paper, fabrics, felts or hydrophilic organic plastic films such as regenerated cellulose, gelatine, casein zein, cellulose ethers or hydrophobic organic films such as thermoplastic cellulose derivatives, or thermoplastic resins or synthetic rubber. The coating material may be a thermosetting resin, or a mixture of thermoplastic and thermosetting resins and may be applied to the backing material in a molten state, or by application in a solution in a solvent which does not affect the backing sheet, or by pressure. The coating materials employed are such as are described in Specification 635,345, to form the backing sheets of similar transfers composed of two layers only, and are described more fully in Group VIII of that Specification. The transfer films which are applied temporarily to the coating of the backing sheet, are formed of materials such as are used for the coating, but are chosen so as to become tacky at temperatures lower than the softening points of the coating material. The transfer of the film to a fabric &c. takes place under heat and pressure, and preferably the backing sheet is stripped when cooling has taken place. The backing sheet may be re-used. In some cases a thermosetting film may be cured after transfer. Example : A sheet of regenerated cellulose plasticized with glycerine is coated with a solution comprisng 10 parts of maleicmodified phthalic-glyceride resin and 0.1 part of a curing catalyst dissolved in 90 parts of toluene and the solvent evaporated. After curing in a moist atmosphere at 100‹ C. a transfer film of ethyl cellulose is applied as a solution in ethyl alcohol and acetone. The film can be transferred to textile fabrics at a temperature of 130‹ C. and pressure of 300 lb. per square inch.
Patent GB-990189-A (GB)
Title: Method of producing bituminous slurries
IPC: C08L95/00
Filed: 1962-04-17
Abstract: A bituminous slurry, which hardens quickly, for surfacing roads is produced by mixing fine grained mineral material, e.g. sand, and water to a pasty consistency, and then successively adding road tar as a warm liquid, cold water, and chloride of lime. 0.5-2.0% of chloride of lime may be used.  The chloride of lime may be mixed into the slurry for 30 seconds.
Patent GB-550380-A (GB)
Title: Improvements relating to air heating apparatus
IPC: B22C9/12
Filed: 1941-11-24
Abstract: 550,380. Heating gases by direct contact with the heating medium. NEUSTADTER, D. Nov. 24, 1941, No. 15110. [Class 64 (i)] Air for use in the drying of foundry sand moulds is heated by direct contact with combustion products in a chamber h, into which projects an air-supply nozzle b around which are directed the hot products from a combustible mixture supplied tangentially to the chamber by a pipe k. The heated air is discharged into a hood o with a number of flexible delivery pipes p.
Patent GB-664454-A (GB)
Title: Improvements in or relating to wave-guide structure
IPC: H01Q19/13
Filed: 1944-05-05
Abstract: 664,454. Impedance transformers for waveguides. SPERRY CORPORATION. May 5, 1944 [Oct. 17, 1942], No. 15173/49. Divided out of 664,391. Class 40 (viii). A guide 5 filled with solid dielectric is connected to a guide 2 of different characteristic impedance by an impedance transforming section of length V containing differing dielectrics whose proportion is adjusted to cause the transforming section to match the guides. In the arrangement shown a projection 8 from the dielectric core of guide 5 projects into the section V, the remainder of the section being air-filled. By adjusting the thickness of projection 8 the guides may be matched. The projection may be made in stepped form which renders the matching effective over a wider frequency band. The tapered joining section 4 between the guides may be omitted. Specification 644,391 is referred to.
Patent GB-520475-A (GB)
Title: Improvements in lens systems
IPC: G02B9/12
Filed: 1938-07-23
Abstract: 520,475. Lenses. KODAK, Ltd. July 23, 1938, No. 15263. Convention date, April 16, 1938. [A Specification was laid open to inspection under Sect. 91, of the Acts, Nov. 23, 1938] [Class 97 (i)] In an objective comprising a dispersive component 2 spaced between a collective component 1 and a compound collective component 3, 4 the powers of the components 1 and 3, 4 being, respectively, about twice and at least one third greater than that of the whole objective, the surfaces Rl and R4 being convex to the incident light and having radii about equal to one fourth the focal length F of the objective, and the surfaces R2 and R3 having radii greater than F/2, the space S2 is less than twice the space S1, the cemented surface R6 is concave to the incident light, the radius of the surface R7 is greater than <SP>F</SP>/ 2 , and the surface R5 is convex to the incident light and has a radius lying between 60 per cent. and twice F; the refractive index of the element 3 may be less than 1.65, the radius of the surface R5 being less than F. Each of the components 1, 2 may be simple or compound, the component 1 may be meniscoid, and the element 3 may have a thickness greater than 4.5 per cent. of F. Complete data for two examples, and variations thereof within the scope of the invention are set out in the Specification. The refractive index of the element 3 may be greater than 1.8.
Patent GB-799004-A (GB)
Title: Single-phase transformer, more particularly for electric traction motors
IPC: H01F29/02
Filed: 1956-05-16
Abstract: 799,004. Transformers. MASCHINENFABRIK OERLIKON. May 16, 1956 [June 1, 1955], No. 15312/56. Class 38 (2). In a single-phase transformer which provides an output voltage variable in steps, one leg 11 of a three-legged core carries a regulating autotransformer winding 14 fed from the supply voltage, the output of this winding being tapped off by a switch 15 and fed to a primary power transformer winding 18, 18<SP>1</SP> disposed about the other two legs 12, 13. The secondary power transformer winding 19, 19<SP>1</SP> is also divided about the legs 12, 13 and supplies the load which may be traction motors 20. The arrangement provides an improvement on a prior art arrangement (Fig. 1, not shown) where the power transformer windings are disposed on one leg only leaving the third leg without windings, this improvement allowing the core leg crosssections to be altered and the total core weight reduced.