baber/WOPTO huggingface dataset:
Patent GB-1108888-A (GB)
Title: Twin-track magnetic head
IPC: G11B5/29
Filed: 1966-01-14
Abstract: 1,108,888. Magnetic head. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 14 Jan., 1966, [19 Jan., 1965]. No. 1861/66. Heading G5R. In a twin-track magnetic head, the heads 3, 4 are screened against cross-talk by two pairs . of laminations 5, 6 of highly permeable magmetic material spaced by a non-magnetic and non-conducting medium 7 which may be hard paper foil. The ends of the laminations are spaced from the screen 8 surrounding the head assembly.
Patent GB-969499-A (GB)
Title: Improvements in or relating to switching on circuit arrangements for television receivers
IPC: H04N5/50
Filed: 1961-01-17
Abstract: 969,499. Automatic gain control. PHILIPS ELECTRICAL INDUSTRIES Ltd. Jan. 17, 1961 [Jan. 20, 1960], No. 1892/61. Heading H3Q. Overload of a television receiver during the warming-up period is prevented. In a receiver for negatively-modulated signals, automatic gain control is derived from a valve 4 cathode-coupled to the video stage 7 and driven on its anode with pulses derived from the line timebase 18 via condenser 9. The negative gaincontrolling voltage developed at the anode of valve 4 is applied to the grids of I.F. stages over a smoothing network 3 and to an R.F. stage over further smoothing networks 2. In such an arrangement the line timebase is the last circuit to come into operation and until it does so the valve 4 is inoperative since no pulses are applied to its anode: the sound channel, which is operative can thus overload due to the absence of A.G.C. To prevent this a valve 1 is connected across the A.G.C. line to the R.F. stage, with its anode connected to the booster diode circuit via resistors 22, 23. The grid is connected to the anode circuit via resistor 28 and is supplied with mains A.C. via condenser 26. During the warm-up period, the grid and cathode of valve 1 act as a diode, rectifying the A.C. supplied to the grid and applying a negative D.C. bias to the A.G.C. line via resistors 28, 22; when the line timebase warms up, however, a positive voltage is applied to the anode of the valve 1 which counteracts the negative voltage. The valve 1 then applies a delay voltage to the A.G.C. line to the R.F. stage.
Patent GB-823562-A (GB)
Title: An improved ball valve and method of fabricating same
IPC: F16K27/10
Filed: 1957-01-18
Abstract: 823,562. Making ball valves. SHAFER VALVE CO. Jan. 18, 1957 [Jan. 24, 1956], No. 1912/57. Class 83 (2). [Also in Group XXIX] A rotary plug valve comprises an outer tube 10 supporting at right angles to it a sealing gland tube 11 having a valve stem 12 journalled therein, a spherical plug member 28 having a through opening 30 and keyed on the projecting end of the stem 12 such that the plug is capable of sliding axially of the outer tube when in the closed position, the through opening being aligned in the open position with inner tubes 32 secured to the opposite ends of the outer tube 10, and sealing rings 37 between the inner ends of the inner tubes 32 and the plug member, the sealing rings being maintained in position by thimble tubes 33 threadedly engaged with the inner surfaces of the inner tubes 32. The sealing gland 16 located in the groove 13 in the tube 11 may comprise channel-shaped rings of neoprene or similar resilient material with a fluid sealing compound injected under pressure between the rings. The annular space C around the plug member may be filled with lubricant by means of pipe connections 48. The sealing rings 37 may be of nylon or similar synthetic material or may be metal with an annular groove supplied with a soap-like lubricant through flexible ducts. Instead of the thimble tubes 33 the sealing rings may be mounted directly on the ends of the inner tubes 32. The valve is fabricated out of standard steel tubing and after assembly is welded at 47A and 47B, being finally welded into the pipe line at 49A and 49B. When the sealing rings are mounted on the ends of the inner tubes the valve is assembled by first clamping the inner tubes in position so that the sealing rings are in compression against the ball. The inner tubes are then tack welded to the outer tube. For finish welding a coolant is circulated between the sealing rings and the outer tube.
Patent GB-562630-A (GB)
Title: Improvements in or relating to perambulators or baby carriages
IPC: B62B9/12
Filed: 1943-02-05
Abstract: 562,630. Perambulators. WILSON & SONS, Ltd., W., and WILSON, L. N. Feb. 5, 1943, No. 1915. [Class 108 (i)] The handle 1 of a perambulator &c. cap able of being folded down entirely within the body 2 is pivoted to the body by pins 4 and wing nuts 8 and is supported in the position of use by abut. ments 5 forming parts of brackets 3 secured to the body. A slidable ring 9 locks the handle to the abutment 5 as shown.
Patent GB-579752-A (GB)
Title: Improvements in or relating to the moulding of reinforced plastics
IPC: B29C45/14
Filed: 1944-02-02
Abstract: 579,752. Making spectacle frames &c. by injection-moulding. POLLITT, S. D. Feb. 2, 1944, No. 1922. [Class 87 (ii)] A reinforcing wire 16 is held in its correct position in a hinged, two-part mould 12, 13, during the injection-moulding of an article such as a side-piece for a spectacle frame, by a perforated piston 19 which snugly embraces the wire. The wire is fixed at the inlet end of the mould by a spring bolt 18 and is free at its other end. As thermoplastic material is forced down the nozzle 17 and into the mould cavity, the piston 19 is forced along the mould keeping the wire taut and in the correct position, until the piston is forced clear of the free end of the wire, which end is embedded in the finished article. The ends of the article may be trimmed as required after moulding. Reference has been directed by the Comptroller to Specification 388,662.
Patent GB-210439-A (GB)
Title: Improvements in floating or semi-floating panel for drag nets or like fishing nets
IPC: A01K73/045
Filed: 1924-01-24
Abstract: 210,439. Marty, A. E. Jan. 26, 1923, [Convention date]. Trawling-gear.-An otter-board com. prises a wooden frame 1 with crossbraces 2 and planks 3 on each side forming chambers in which are placed floats 5 such as hollow glass balls. The floats may be of various shapes. The planks are preferably pierced to allow water to enter the inner chambers to relieve pressure on the planks. Specification 216,418 is referred to.
Patent GB-1103618-A (GB)
Title: Production of enamelled steel articles
IPC: C21C7/10
Filed: 1967-01-13
Abstract: An article which is to be provided with a single layer of enamel after being cold-formed as by bending, folding or flanging, is made of a steel whose C content has been lowered under reduced pressure, with the steel in the molten state, to at most 0.01% C, the steel also containing <TABS:1103618/C6-C7/1> The C content is preferably not more than 0.006%.
Patent GB-751599-A (GB)
Title: A mobile machine with an elevatable and travelling carrier
IPC: B66F11/04
Filed: 1954-01-22
Abstract: 751,599. Vehicle couplings. ADSHEAD & SON, Ltd., T. (Trump, Ltd.). Jan. 22, 1954, No. 2037/54. Class 103 (5). [Also in Groups X and XXX] A load-handling device (see Group XXX) is attached to a pair of rearwardly-extending arms 36 at the rear of a tractor or other vehicle by a coupling comprising a draw-bar 34 pivoted to arms 36 at 37, a coupling-bar 33 secured to the device, a pair of ring members 32 secured to structure 31 and a pin 38 passing through the bars 33, 34.
Patent GB-331245-A (GB)
Title: Improved feed-water regulator for steam generators and the like
IPC: F22D5/14
Filed: 1929-01-21
Abstract: 331,245. Copes Regulators, Ltd., and Armstrong, C. H. Jan. 21, 1929. Feedwater, controlling.-In a feed regulator of the kind in which the feed-valve x is operated by the expansion and contraction of tubes placed in free communication with the boiler and across the water level therein, oppositely-inclined tubes a, a' are secured at one end in an adjustable block b formed with a passage placing the tubes in communication with one another, and sockets c, c<1> connecting the other end of the tubes with the steam and water pipes d, d<1> are formed with lugs to which are attached bell-crank levers p, p<1> pivoted on pins s, s' and carrying links t, t<1> pivoted to a floating lever v, which is connected to the feed-valve lever by a link w. The tubes are maintained under tension by a weight y, and the tension may be relieved by rotating a cam l on the bolt f securing the block b in the frame.
Patent GB-348713-A (GB)
Title: Improvements in processes of direction finding and guiding
IPC: G01S1/02
Filed: 1930-01-21
Abstract: 348,713. Directive wireless signalling. SOC. ANON. DES ONDES DIRIGEES, 46, Rue de la Tour, Paris. Jan. 21, 1930, No. 2107. Convention date, Jan. 21, 1929. [Class 40 (v).] A direction finding system comprises a fixed transmitting station O, Fig. 1, emitting a beam having a nodal line of interference oscillating periodically between two fixed directions OX1, OX2 and modulated momentarily by a particular frequency when its nodal line passes through a predetermined datum direction OXm. The moving receiving station situated at M, for example, in the zone X1OX2 is provided with a disc A, Fig. 2, rotating synchronouslv with the oscillating beam, and furnished with conducting segments r, w, g connected to slip rings r<1>, w<1>, g<1> engaged by brushes r<11>, w<11>, g<11> respectively. A brush B engaging segments r, w, g in succession is connected through relay contact h to a source of current the circuit being completed through one of the lamps R, W, G connected to brushes r<11>, w<11>, g<11> respectively. The operation is as follows.-The disc is driven through a clutch which automatically disengages once per revolution and is engaged again by a relay connected in a filter circuit tuned to the modulation frequency sent out along the datum line OXm once per cycle. The nodal line upon reaching the receiver is arranged to operate a relay connected in an aperiodic circuit to close the contact h and thus light one of the lamps R, W, G indicating the zone in which the receiver lies. The phase of the disc is so adjusted that the white lamp is illuminated when the receiving station is on the datum line OXm. In this position the passage of the nodal line corresponds with the special modulation which is therefore not received and the disc remains stationary.
Patent GB-509896-A (GB)
Title: Apparatus for the medical treatment of the intestines
IPC: A61M3/02
Filed: 1938-01-21
Abstract: 509,896. Multiple-way valves. MEDIZINISCHE DARMBAD-APPARATE GES. Jan. 21, 1938, No. 2113. Convention date, April 28, 1937. [Class 135] [Also in Group VI] A rotary cylindrical valve for controlling the operation of an industrial irrigator comprises stationary spigot F<1>, to the bore F<2> of which irrigating liquid is supplied, and ports f', f<2> therein. The spigot is surrounded by a rotatable sleeve F<3> having a port f<3> and an external channel f<4>, f<5>, whilst the body of the valve has passages F<1>, F<5>, F<6> communicating with various parts of the irrigating apparatus and a passage f<6> communicating with the open air. With the sleeve in the position shown in Fig. 2, liquid is supplied from the box F<2> through ports f<2>, f<3> to the. passage F<4>. In a second position, port f<3> registers with port f<1> and liquid is supplied to passage F<5>. In a third position the liquid supply is cut off, and the channel f<5>, f' connects the passages F<4>, F'. In a final position the liquid supply remains cut off and air is admitted from passage f<6> by channel f<4> to pasage F'
Patent GB-251324-A (GB)
Title: Improvements in machinery for treating, compressing and moulding plastic substances
IPC: B30B11/22
Filed: 1925-01-24
Abstract: 251,324. Dryden, W. Jan. 24, 1925. Extrusion machines.-In a machine in which oil seed meal and the like is moulded into cakes for cattle food by compressing and extruding it through perforations in a rotating disc or ring, and cutting off the extruded cores into suitable lengths, the meal is forced into the mould openings by a series of contacting rollers so arranged that each successive roller is nearer than the preceeding one to the surface of the disc or ring. As shown in Fig. 1, the meal fed to a hopper G is compressed and extruded through a perforated rotating disc A by conical rollers B, C, D journaled in a bracket E. The rollers are in contact, the roller B being in contact with the disc A while the distances of the rollers C, D from the disc are progressively increased. The extruded material is cut off by a fixed knife K. The pressure of the rollers B, C, D on the disc A is taken up by a bearing roller F carried by the bracket E. When the material is extruded through perforations a<1> in a rotating ring A<1>, the rollers B<1>, C<1>, D<1> are arranged as shown in Fig. 4. They are journaled in a fixed part J of the machine and in a bracket E<1>, the upper portion of which is shaped to take a feed hopper G<1>. Fixed adjustable closure plates P, P<1> for the openings in the disc and ring respectively as described in Specification 245,286 may be fitted. The Provisional Specification describes also an apparatus in which the material is completely moulded to size in the openings without having to be cut off. The moulds may be through-openings which are closed at the period of compression by a plate, the moulded pieces being ejected by a toothed wheel or by percussive devices. The openings may also be fitted with cam or like operated pistons to form the bottoms of the moulds and act as ejectors.
Patent GB-414043-A (GB)
Title: Method for producing containers from vegetable and other pasty substances
IPC: D21J3/00
Filed: 1933-01-23
Abstract: 414,043. Presses for separating liquids from solids. HULLEN, J. VAN, 82, Hohenzollernstrasse, Krefeld, Germany. Jan. 23, 1933, No. 2173. [Class 46.] In moulding containers from vegetable and other pasty substances in a press with a perforated hollow ram connected to suction, air is admitted to the chamber of the ram while water is being drawn therefrom, but is excluded therefrom while the moisture remaining in the formed container is evaporated under the effect of heat and suotion. The mould a and ram b are formed with heating channels c, d, the ram being hollow, perforated with channels g, covered by a sieve i and provided with an air valve and a pipe k connected to a suction pump. As the ram descends expressed water passes through the channels g and is withdrawn through the pipe k, the valve l being kept open. When the ram has reached its lowest position, determined by a shoulder m, moisture remaining in the formed container is removed by evaporation due to heat, suction being continued through the pipe k.and the valve l being closed.
Patent GB-1346791-A (GB)
Title: Process and intermediates for preparing benzamide compounds
IPC: C07D209/48
Filed: 1971-01-18
Abstract: 1346791 Phthalimides DELMAR CHEMICALS Ltd 18 Jan 1971 [21 Jan 1970] 2240/71 Heading C2C The invention comprises novel phthalimides of the Formula II wherein X is Cl or Br, and R 1  and R 2  each are H or alkyl and the conversion of the above compounds in which R 1  and R 2  are alkyl into benzamides of the Formula I wherein R is alkyl and Z is tertiary aminoalkyl, by reacting the said compounds under substantially anhydrous conditions with diamines of the formula ZNH 2 . The compounds of Formula II above are prepared by reacting the appropriate amines with phthalic anhydride, followed by or preceded by, esterification, alkylation and/or bromination or chlorination. Methyl 2-methoxy-4-phthalimidobenzoate is obtained by methylating methyl 4-phthalimidosalicylate, resulting from the reaction of phthalic anhydride on methyl 4-aminosalicylate, obtained by esterifying 4-aminosalicyclic acid. The first named compound may also be obtained by reacting dimethyl sulphate with 4-phthalimidosalicylic acid resulting from the reaction between phthalic anhydride and 4-aminosalicylic acid. Ethyl and isopropyl 4-aminosalicylate, ethyl and isopropyl 4-phthalimidosalicylate, and ethyl and isopropyl 2-methoxy-4-phthalimidobenzoate are obtained by similar processes. N - (2 - Diethylaminoethyl)phthalimide is obtained as a by-product in the reaction between N,N-diethylethylenediamine and methyl 5- chloro-2-methoxy-4-phthalimidobenzoate. Reference has been directed by the Comptroller to Specification 994,023.
Patent GB-764903-A (GB)
Title: Improvements in or relating to the production of coal briquettes
IPC: C10L5/16
Filed: 1955-01-25
Abstract: 764,903. Agglomerating fuel. ELOD, E., and GOLLMER, W. Jan. 25, 1955 [Jan. 28, 1954; Feb. 5, 1954], No. 2247/55. Addition to 683,578. Class 50. Briquettes are produced from coal fires with an emulsified binding agent, the emulsion being first converted into fine particles, e.g. by spraying, the particles then being solidified by quenching in which form they are added to the coal fires. A melt of pitch and tar oil, e.g. in the ratio of 100: 3 to 15 by weight is emulsified by adding, e.g. 10-40 parts water to 100 parts melt. A small quantity, e.g. 0.1-0.4 per cent, of emulsifiers such as naphthenic or resinic acids, alkylnaphthalene sulphonic acids or their alkali metal salts, size, &c., may be added, particularly if over 10 per cent of water is incorporated. The emulsion may be atomized and the particles caused to solidify by quenching in water; after centrifuging to remove water they are distributed uniformly in the fuel. Fine threads with non-caking properties may be formed by injecting the atomized emulsion into a cold air current. The solid emulsion particles may be pulverized and the powder added to the fuel. Small amounts of fine powder, preferably coal dust, may be incorporated in the emulsion, as by adding the powder to the pitch-oil mix or to the water; or the solidified emulsion particles may be coated with the fine powder. In one embodiment the emulsion is sprayed in an atmosphere containing fine coal dust and the particles are quenched by cooled air charged with the dust.
Patent GB-538681-A (GB)
Title: Composite slabs of high density and low porosity in combination with low density and high porosity materials
IPC: E04C2/04
Filed: 1940-04-06
Abstract: 538,681. Building-blocks. KEEN, H. M., and DOUGLAS, W: M. April 6, 1940, No. 2276. Drawings to Specification. [Class 87 (i)] Relates to composite building blocks having one or more surfaces antagonistic to condensation. A core or base is made of cement concrete comprising hard aggregate such as crushed ballast or the like, preferably mixed with the minimum quantity of water to give a slump test of approximately three quarters of an inch, densely compacted in moulds or forms.. One or more covering layers comprise softer aggregates and one less densely compacted, so that on final setting these covering layers are of lower density, higher porosity and less heat conductivity than the core or base. The covering layers may be made up with a mixture of lime putty, calcium carbonate, with sulphite of lime, with sufficient water to give on test a slump of not less than one inch.
Patent GB-1381931-A (GB)
Title: Preparation of anhydrous dicalcium phosphate with controlled abrasive  properties
Inventor: POST L B
IPC: C01B25/32
Filed: 1972-01-18
Abstract: 1381931 Anhydrous CaHPO 4  STAUFFER CHEMICAL CO 18 Jan 1972 [17 Feb 1971] 2284/72 Heading C1A [Also in Division A5] Anhydrous dicalcium phosphate, CaHPO 4 , having an antimony abrasion loss value of 5-30 mg, a particle size of less than 325 mesh (U.S.) and a loss of weight on ignition at 800‹ C. of 6À6-9%; is prepared by heating agitated solid granules of dicalcium phosphate dihydrate, CaHPO 4 .2H 2 O, having a particle size of less than 325 mesh and containing not more than 20% by weight of free water; at a temperature of not more than 380‹ C. and with a rate of dehydration of 0À001-0À3 lbs of H 2 O per min. per 1b of dihydrate. The dihydrate may contain 0À1-3% by weight of a stabilizer comprising trimagnesium orthophosphate, tetrasodium pyrophosphate, sodium acid pyrophosphate, pyrophosphoric acid and/or calcium sodium pyrophosphate. The dihydrate is preferably heated indirectly in a rotary furnace of directly in a fluid bed. Dehydration may also be effected in an  atmosphere of steam at a temperature of 100‹ C.
Patent GB-1369154-A (GB)
Title: Charging apparatus for use in xerography
IPC: G03G15/02
Filed: 1972-01-18
Abstract: 1369154 Corona charging apparatus RANK XEROX Ltd 18 Jan 1972 [20 Jan 1971] 2286/71 Heading H1X [Also in Division G2] A corona discharge apparatus, which in use is employed to charge a photoconductive member 1, comprises at least one corona wire 5, a conductive shield 6 or 20 and an insulating member 9 or 24, with means whereby the distance from the wire 5 to the insulating member can be varied. For example, the insulating member 24 can be brought in to surround the wire 5, and cut off the corona discharge without disconnection of the high-voltage supply feeding it. Alternatively an array of wires 5 and shields 6 may be mounted to revolve about an axis 7 within an apertured insulating casing 9, so that as each wire 5 approaches the lip of the casing its discharge is quenched, and the photoconductive member 1 receives an even exposure from the corona wires without any need to cut off the current to them while they are on that part of their path which is remote from the member 1.
Patent GB-1079131-A (GB)
Title: Method of making ion-exchange resins
IPC: B29B13/10
Filed: 1965-01-19
Abstract: Anion exchange resins are produced by grinding a strongly basic (i.e. containing quaternary ammonium groups), hydroxide form, divinylbenzene-styrene copolymer, anion exchange resin in a hammer mill to a particle size of 60-400 mesh (U.S. Standard), the resin before grinding having a free water content of 1.9-7.6% and a size of 20-50 mesh.