baber/WOPTO huggingface dataset:
Patent GB-779316-A (GB)
Title: Process and apparatus for moistening compacted masses of laminated tobacco
Inventor: PIETRUSKA FRIEDRICH
IPC: A24B3/02
Filed: 1955-09-27
Abstract: 779,316. Moistening tobacco. SCHIFF & STERN GES. Sept. 27, 1955, No. 27541/55. Class 130 Warm moist air is passed through a bale or barrel-shaped mass 4 of laminated tobacco placed as a partition between two sub-divisions of a treatment chamber 1 with the laminations edge-on to each. Flaps or inflatable bags 8 and, if necessary, a top partition 8 with resilient edges 8b co-act with the mass 4 to sub-divide a chamber 1 into spaces alternately supplied with air from a fan 9 and conditioner 10 via a valve 11, each space when unsupplied being connected by its supply duct 11a or 11b to an exhaust duct 13. The mass 4 stands, preferably resting on the base 7 of a barrel, on a step 5 centrally recessed,. the chamber end 2 forming a door having an observation window. Vertical rods 15 support the mass 4 and bags 8. In a modification, the mass 4 is disposed horizontally in an upper space along an open-centred gutter leading to a lower space; this arrangement may also be used turned through a right angle so that the mass 4 is upright, vertical supporting rods being used on its free side.
Patent GB-886938-A (GB)
Title: Intruder detecting system
IPC: G08B13/16
Filed: 1959-08-12
Abstract: 886,938. Intruder alarm systems. SPECIALTIES DEVELOPMENT CORPORATION. Aug. 12, 1959 [Sept. 5, 1958], No. 27556/59. Class 118.  An intruder alarm system designed to detect footsteps within a perimeter whilst not responding to footsteps or traffic outside the perimeter comprises transducer means capable of receiving energy conducted through the ground and transmitting an electrical output which is applied to electro-responsive means tuned to detect energy only at predetermined frequencies. Transducers 14 (Fig. 3) of the barium titanate piezo-electric crystal type are buried in or placed on the ground at equidistant intervals of say 10-15 feet, the transducer nearest the perimeter being some 20 feet therefrom, and the output from these transducers is fed in parallel to a conventional three-stage tuned-transformer coupled transistor amplifier 15. One of three range settings is chosen by connecting predetermined capacitance across each of the three coupling transformers, the frequency range being in the upper sonic band. Rectified output is used to maintain a relay operated and so keep the alarm 17 inoperative. The higher frequencies of the band generated by a footstep within the perimeter are received with sufficient strength to bias off a final transistor stage of the amplifier 15, releasing the relay and operating the alarm 17. The higher frequencies emanating from activity outside the perimeter are sufficiently attenuated, by the greater distance travelled through the ground, not to release the relay. Fig. 5 shows a circuit designed to avoid false operation from distant disturbances due e.g. to explosions. Such disturbances will be received on each of two transducer networks 14 sufficiently strongly to release both relays RL2 and RL3, thus keeping relay RL4 de-energized and the alarm 17 inoperative. The two transducer groups are spaced apart sufficiently for the footstep of an intruder to be received on the transducer(s) of one group only; thus only one of the relays RL2, RL3 releases, relay RL4 is energized and the alarm 17 operates. The arrangement of Fig. 6 is said to prevent false operation by a bird, mole or worm. Three amplifiers 15A, 15B and 15C are employed, each maintaining energized a corresponding relay RL5, RL6 or RL7. The amplifiers 15A and 15B each have transducers 14 so disposed that the sound of an intruder will be picked up by at least one transducer in each group, thus releasing relays RL5, RL6 and so energizing relay RL4 which operates the alarm 17. Disturbance caused by a mole, worm or bird will affect one transducer only and so fail to operate relay RL4. Amplifier 15C is connected to a single transducer so placed that it will not pick up a local disturbance which affects a transducer in each of the groups connected with amplifiers 15A and 15B, but when a distant disturbance of high intensity affects all three transducer groups then the alarm circuit is broken by the operation of relay RL7.
Patent GB-743514-A (GB)
Title: Production of copolymers
IPC: C08G18/81
Filed: 1953-10-07
Abstract: A saturated linear polyester of molecular weight at least 500 is linked by means of isocyanate groups with unsaturated compounds, other than dicarboxylic acids, and the addition product obtained is copolymerized with a vinyl compound, e.g. styrene. The addition product may be produced by reaction of the polyester with excess diisocyanate, calculated on the end groups of the polyester, followed by reaction with an unsaturated compound containing at least two hydrogen atoms in functional groups such as OH or NH, e.g. compounds such as bisdiol esters of maleic acid (from 1 mol. of dimethyl maleate and 2 mols. of hexane-diol or ethylene or diethylene glycol) and acryldiethanolamide. Alternatively the saturated polyester may be reacted with unsaturated organic isocyanates containing at least two isocyanate groups, e.g. reaction products of 2 mols. of toluylenedisocyanate with 1 mol. of butenediol or with the above said bis-glycol maleates.  The polyesters specified are derived from ethylene and diethylene glycols and adipic and phthalic acids and may be modified with components containing tertiary nitrogen. Isocyanates listed are hexamethylene, toluylene, diphenyl methane and 1.5-naphthylene diisocyanates. Polymerization may be carried out in the presence of a catalyst such as a cobalt salt or benzoyl or di-t-butyl peroxide.  In examples the polyesters are dehydrated before reaction with the isocyanate compounds and the reaction mixtures comprise hydroquinone as inhibitor.  The products may be rubber-like, leather-like or rigid vitreous compounds.
Patent GB-1049328-A (GB)
Title: Porous structures of polytetrafluoroethylene resins
IPC: H01M50/494
Filed: 1963-07-11
Abstract: A lamellar porous pellicule of polytetrafluoroethylene is made by forming a hydrostatic pressure-coalescible composition comprising a removable particulate filler and porous aggregates of P.T.F.E. colloidal particles and a liquid lubricant capable of wetting the latter, the volume of the P.T.F.E. being from 5 to 95% of the total solids volume, sequentially working the composition in a hydrostatic condition by the concurrent application of a compressive stress and a shear stress perpendicular to the compressive stress, the shear stress in successive steps being distributed substantially biaxially about the compressive stress and continuing the working until the resultant pellicule has molecular orientation as determined by an A X-ray ratio of 1 to 0.4 and a B X-ray ratio of 0.7 to 0.1 and thereafter removing the removable filler.  The terms "A" and "B" are defined in the Specification.  The removable filler may be sodium chloride, iron or aluminium powder, ammonium chloride, carbonate or bicarbonate, polymethyl methacrylate, sodium sulphate, an acetal resin, calcium carbonate or borax.  The composition may be sintered before or after removal of the removable filler.  The lubricant may be kerosene or a dielectric transformer oil and there may also be present a nonremovable filler such as alumina, silica, P.T.F.E. or polyamide fibres, potassium titanate or an abrasive such as jeweller's rouge.  The porous products may be employed for such uses as filtering media, battery separators, separators for fuel cells, supports for catalysts, ion exchange resins or electrode materials, bandages, insulating and cushioning material, or for the production of fire- and weather-resistant documents.
Patent GB-203557-A (GB)
Title: Improvements in and relating to machines for trimming strawberry beds and the like
IPC: A01B3/10
Filed: 1922-10-12
Abstract: 203,557. Paul, W. Oct. 12, 1922. Disc-tool and multiple-furrow implements.-A central bar-frame 1 is provided at its front end, behind an adjustable travelling wheel 3, with a central cutting-disc 9 in front of a central digging- tine 11. The central frame also carries laterallyprojectings arms 12 on which are adjustably secured hanging brackets 13, carrying cutting- discs 14 provided with side flanges 17. Other brackets secured to the arms 12 carry curved blades 15 adjustably arranged closely behind the discs 14. The blades 15 turn over the soil and other material cut by the discs 14. Reference has been directed by the Comptroller to Specification 206,964.
Patent GB-946000-A (GB)
Title: Improvements in or relating to carrier-frequency-shift telegraph systems
Inventor: FOOT JOHN BARTRAM LOVELL
IPC: H04L27/12
Filed: 1961-07-31
Abstract: 946,000. Telegraphy; frequency shift radio signalling. GENERAL ELECTRIC CO. Ltd. July 27, 1962 [July 31, 1961], No. 27703/61. Headings H4L and H4P. In a control circuit for a frequency shift telegraph system, a switch arrangement for passing a signal produced by one or other of two different frequency oscillators is controlled by means responsive to the difference frequency of the two signals so as to allow the switching from one signal to the other, in response to a keying signal, to take place only when the two signals are in phase. In the circuit shown, signals of 5000 kc./s. and 5002 kc./s. respectively from oscillators 2, 3 are fed to the switch arrangement 5 and to a mixer 6 which produced a difference frequency of kc./s. The difference frequency amplified at 7 passes through a phase shifter 8 to a pulse generator 9 which produces one pulse per cycle. The pulses, two thousand a second, are fed to a shift register 1 to pass keying signals one per pulse to the telegraph switching amplifier 5. The setting of the phase shifter 8 is such that the two signals from the oscillators 2, 3 are in phase each time a keying signal is passed. The circuit may also include a mixer 10 and a zero beat indicator 12 which operate to compare the difference frequency with a standard produced by a reference oscillator and operate a control circuit for the oscillator 3 to adjust the frequency of the latter oscillator until the difference frequency equals the reference frequency.
Patent GB-422005-A (GB)
Title: Improved wood paving block
IPC: E01C5/14
Filed: 1933-10-09
Abstract: 422,005. Wood paving - blocks. GRIDLEY, J., 11, St. John's Road, Hampton Wick, Middlesex. Oct. 9, 1933, No. 27736. [Class 87 (i)] A wood paving-block is provided on one side with integral transverse ribs of undulating form, the ends D and centre portion B of each rib merging into the surface of the block. The centre portion of the block between the ribs may be hollowed out, as at A <1>, to receive grouting material, and the ends and/or the sides may be grooved as at C.
Patent GB-709908-A (GB)
Title: Roller apparatus for automatically aligning moving objects with respect to a predetermined path of travel normal to the rollers as the objects pass thereover
IPC: B21D43/02
Filed: 1950-11-14
Abstract: 709,908. Feeding webs. UNITED STATES STEEL CORPORATION. Nov. 14, 1950 [Jan. 13, 1950], No. 27770;50. Class 100 (1). [Also in Groups XXII and XXX] In apparatus comprising a plurality of spaced apart parallel rollers for supporting a moving strip of material and for automatically aligning it with respect to a pre-determined path of travel normal to the rollers as it passes over the rollers, at least some of the rollers have their periphery built up of a plurality of flexible portions arranged on both sides of a transverse central plane, said portions being inclined towards the axis of the roller away from the said plane. In the embodiment shown in Fig. 1, the roller comprises a sleeve 10 of resilient material such as rubber in which projections are formed by circumferential slots 12, the sleeve being secured on a shaft 8 supported in bearings 16. If it is desired to have a smooth peripheral surface the slots may be filled with material such as sponge rubber having a much greater elasticity than the projections. The roller may be driven by providing the shaft 8 with an extension 20 connected to a suitable driving means. Fig. 4 shows a modification in which the roller is built-up of a plurality of resilient discs 30 secured on a shaft 32 between a central member 34 and end members 36 secured by nuts 38. In another modification, Figs. 5, 6 (not shown) the projections are spaced longitudinally and circumferentially of the roller. In Fig. 9, strip is conveyed between a pair of rollers each comprising a resilientmember 50 formed with an air pocket 52 and having flexible portions 4, 6.
Patent GB-1285518-A (GB)
Title: Spraying device, more paticularly for abrasive liquid compositions
IPC: B24C5/02
Filed: 1971-06-14
Abstract: 1285518 Spray producers VAGNONE & BOERI di AG BOERI & C 14 June 1971 [25 June 1970] 27777/71 Heading B2F In a sprayer supplied with compressed air for atomising viscous abrasive spray material, the rate of flow of spray material, through an optionally replaceable tube 64, is varied by adjusting the extent to which a cut-off diaphragm 50 can be retracted from the mouth of the tube 64, on admitting air to cylinder 36. Plunger 24 is retracted to abut a longitudinally adjustable bolt 31, having a locking ring. When the pressure in cylinder 36 falls, spring 35 returns plunger 24 to close the mouth of tube 64 and interrupt the supply of spray material.
Patent GB-1148511-A (GB)
Title: Improved propulsion machinery for a submarine
IPC: H01M8/00
Filed: 1966-06-22
Abstract: 1,148,511. Motor power plant. ALLMANNA SVENSKA ELEKTRISKA A.B. June 22, 1966 [June 23, 1965], No.27831/66. Heading F1Q . Propulsion machinery for a submarine includes a low speed unit comprising a fuel cell plant driven by hydrogen and oxygen and a high speed unit comprising a thermal power plant utilizing water vapour as the working medium, which water vapour is formed at least partly by combination of oxygen and hydrogen. The numeral 1 designates a fuel cell battery, driven by hydrogen and oxygen and generating electrical energy which via cables 2 is fed to a D.C. motor 3 which directly drives a propeller shaft 4 of a submarine. The propulsion machinery also comprises a turbine 5 which is connected to the propeller shaft 4 through a gear 6 and a clutch 7. When the clutch 7 is engaged the turbine 5 and electric motor 3 simultaneously drive the propeller shaft 4. The fuel cell plant and the turbine have common tanks 8 and 9 one of which contains liquid hydrogen and the other liquid oxygen for controlling the combustion temperature in the combustion chamber 25 water is fed through a conduit 34 from the reaction water tank 32.
Patent GB-1319485-A (GB)
Title: Latching device
IPC: E05B65/08
Filed: 1970-06-09
Abstract: 1319485 Latches CEGEBAT GP 9 June 1970 [9 June 1969] 27851/70 Heading E2A A latching device comprising a bolt, an unlatching ramp integral with the bolt and a means for biassing the bolt and ramp together to a latching position is, in use, housed in a cavity in the outermost leaf of a plurality of leaves, (e.g. window leaves) displaceable in a fixed frame, and is engageable in a socket formed in the fixed frame to fasten the outer leaf to the fixed frame; unlatching may be performed by engagement of the adjacent inner leaf with the unlatching ramp. Figs. 1 and 2 are a vertical and a horizontal section respectively. As the outer leaf is slid along the rail 11, Fig. 1, in a direction away from the observer (equivalent to upwards in Fig. 2), the bevel of a latch bolt 51 makes contact with the adjacent edge of groove 21 formed in the upright 2 near the end of the path of travel. The bolt is thus urged to the right against the force of spring 53 and finally snaps into place as shown (full lines) in Fig. 2. If now the inner leaf 4, Fig. 2, is slid in the same direction, the inner leaf, at a position near the end of its travel, makes contact with the unlatching ramp 52 integral with bolt 51, forcing it to the right to the unlatched (dotted line) position at the limit of travel of the leaf 4. Thereafter, a device, not shown or described, for securing leaves 3 and 4 together, may be actuated, whereupon the leaf 3 is entrained by leaf 4 on retraction of leaf 4.
Patent GB-341438-A (GB)
Title: Improvements in fluid and like containers
IPC: B65D3/06
Filed: 1929-09-13
Abstract: 341,438. Paper &c. bottles or containers. WARE, H. M., 44, Normanton Road, South Croydon. Sept. 13, 1929, No. 27915. [Class 66.] A paper &c. bottle or container adapted to be waxed &c. is made from a single blank, one part S<1> forming a definite base portion, and the other part S<11> being an extension piece integral with the base and adapted to be wrapped round in a spiral manner to form the body. The overlapping edges are fixed or cemented together. The bottle when formed may have a square, elliptical or polygonal base and is in the form of a truncated pyramid. According to the Provisional Specification the body portion may be formed by a number of flounces or extension pieces integral with the base.
Patent GB-228617-A (GB)
Title: Improvements in rolling mills
IPC: B21B39/12
Filed: 1923-11-06
Abstract: 228,617. White, A. E., (Morgan Construction Co.). Nov. 6, 1923. Rolling.-In a continuous or semicontinuous mill the stock passes from a furnace 1 to a pair of adjacent stands of roughing rolls 2 driven by an adjustable speed electric motor 6 through reduction gearing 7. A runout 3 receives the stock from the rolls 2 and from thence it passes to the first pair 4, of adjacent two-high roll stands 4, 5. The rolls 4, are driven by the motor 6 and the rolls 5, by an adjustable speed electric motor 8. A Y-transfer conveying mechanism 9 of known form including skew conveyer rolls 10 receives the stock from the rolls 5 and presents the rear end of each piece to a stand of rolls 11 driven in the opposite direction to the preceding rolls by the motor 8. A similar conveying mechanism 12 receives the stock from the rolls 11 and delivers it to stands of rolls 14, 15, 16 of which the firstmentioned is driven by the motor 8 and the others by independent motors 19, 20. The distance between the rolls 14 - - 16 is such that the formation of loops 21, 22 is permitted.
Patent GB-533186-A (GB)
Title: Improvements in electromagnetic switches of the type used in telephone systems
IPC: H01H67/16
Filed: 1939-10-16
Abstract: 533,186. Electric selectors. GENERAL ELECTRIC CO. Ltd., and ROSE, W. R. Oct. 16, 1939, No. 27945. [Class 40 (iv)] In a switch of the vertical and rotary type normally released by forward rotary stepping, vertical release is effected by a separate magnet which withdraws the vertical pawl and detent, and also restores a portion of the vertical offnormal springs. When the switch moves off-normal, cam plate 8 engages cam 9 on pivoted member 34 carrying an operating arm 35 for one portion 7 of the vertical offnormal springs and cam plate 28 operates arm 27 of another portion 6 in a manner not shown. The armature 15 of the vertical release magnet 14 is spring mounted at 16 and engages a rocker arm 21 which is adjustable by means of an eccentric at 22 and has bent portions 24, 25 operating on the pawl 10 of the vertical magnet (not shown) and the detent 11. The armature 15 also operates a bell-crank 17 engaging an arm 26 carried by the operating arm 27 of the off-normal springs 6.
Patent GB-695891-A (GB)
Title: Improvements in or relating to gas-turbine engines
Inventor: STARK FRANK HENRY
IPC: F02C7/08
Filed: 1950-11-15
Abstract: 695,891. Gas-turbine plant ROLLS-ROYCE, Ltd. Oct. 5, 1951 [Nov. 15, 1950], No. 27996/50. Class 110(iii) A gas turbine plant in which exhaust gases from a turbine pass through a heat exchanger 14 to heat working medium such as air delivered by a compressor 12 prior to heating of the air in the combustion apparatus 22 comprises a plurality of co-axially arranged axial-flow turbines 13, 16, 10 in series. Air is tapped off from the compressor discharge 12a and passes to an air jacket 25 surrounding the turbine casing 27 which is thereby cooled. The air jacket extends axially from the inlet of the high pressure turbine 13 at least to the outlet of another of the turbines. The tappedoff air is fed back through the duct 28 to a point between the air outlet side 14b of the heat exchanger and the turbine. In the plant shown the turbine 10 drives a first-stage air compressor, the turbine 13 drives a second-stage air compressor 12 and the turbine 16 supplies external power through the shaft 17. The air jacket 25 may extend upstream to enclose the inlet ducting of the turbine or the combustion chamber or both, and may extend downstream to enclose the turbine exhaust ducting. A reheat combustion system may be provided between the turbines 16 and 10. Specification 638,067 is referred to.
Patent GB-1293061-A (GB)
Title: Process for the manufacture of heat reflecting glass sheets
IPC: C03C17/25
Filed: 1970-06-10
Abstract: 1293061 Metal oxide coated glass NIPPON SHEET GLASS CO Ltd 10 June 1970 [13 June 1969] 28234/70 Heading C1A Metal oxide coated glass sheets having higher heat reflectance are prepared by coating the glass with a 5-15% w/w solution of a mixture of 1-25% w/w, as metal oxide, of at least one compound which is thermally decomposable to tin oxide or titanium oxide, and 99-75% w/w of at least one compound which is thermally decomposable to cobalt, iron, chromium, nickel, or manganese oxides, and forming the oxides on the surface of the glass by thermal decomposition. In a preferred embodiment the solution is sprayed on to a freshly made moving glass ribbon (at 500-750‹ C.) and either before or during the annealing stage.. The coating may be 0À04-0À07 micron thick. Suitable compounds include acetylacetonate complexes or cyclopentadienyl compounds of the metals, dibutyl tin diacetate, dimethyl tin dipropionate and titanic acid esters, and a preferred solvent is benzene.
Patent GB-223753-A (GB)
Title: Improved means of automatically aligning thrust bearings
IPC: F16C17/04
Filed: 1923-11-09
Abstract: 223,753. Railing, A. H., and Cranston, W. M. Nov. 9, 1923. Thrust bearings.-An even distribution of pressure in a thrust bearing is obtained by means of a washer 6 having diametral ridges 6<a>, 6<b> formed on its opposite faces at right-angles to each other, so as to provide a self-aligning action. The application to a ball thrust bearing 5 of an electric veiling fan is shown in Fig. 1.
Patent GB-1092902-A (GB)
Title: Improvements in or relating to cleaning devices
Inventor: MACKEWN ALLEN RAYMOND
IPC: A47L13/16
Filed: 1963-07-17
Abstract: 1,092,902. Laminates. NEW HYGIENE Ltd. July 15, 1964 [July 17, 1963], No. 28351/63. Heading B5N. A cleaning device comprises a sheet of washleather bonded to a sheet of foamed polyurethane by a waterproof flexible adhesive, the thickness of the polyurethane being about 5 to 10 times that of the wash-leather. The exposed surface of the polyurethane 11 is preferably profiled.