baber/WOPTO huggingface dataset:
Patent GB-1047981-A (GB)
Title: Improvements in or relating to multi-stage evaporators
Inventor: STARMER ROY
IPC: C02F1/06
Filed: 1961-11-08
Abstract: 1,047,981. Multi-stage flash comparator; distilling sea water. RICHARDSONS, WESTGARTH & CO. Ltd. Oct. 31, 1962 [Nov. 8, 1961], No. 40091/61. Heading B1B. In a flash evaporator, particularly for distilling sea water, comprising a series of stages, each comprising a flash chamber 14 and an associated heater-condenser 12 or 24, wherein the vapour is cpndensed, thus preheating the liquid to be evaporated, the vapour generated in one of the intermediate stages is withdrawn and compressed by a mechanical compressor 33, e.g. rotary compressor or piston compressor, and the compressed vapour, mixed with steam from an external source, is used to heat the brine in heater 20 to the required temperature before it enters the first flash chamber. Fresh cool brine, supplied to the evaporator via pump 28 and line 26,passes through the heatercondensers 24 and then via line 30 into the last flash chamber 14, where it mixes with the concentrated brine leaving the evaporator. Part of this brine mixture is discarded, andthe remainder is pumped to the first stage of the evaporator via line 10, heater-condensers 12,and heater 20. The vapour generated in flash chamber 14 passes into heater-condensers 12 or 24 via lines 13 or 25, and heats either the recirculated brine or the fresh brine. Vapour is withdrawn from heatercondenser 12a, or 24a or vapour receiver 40, via line 36, 38 or 42 respectively,by compressor 33, which is driven by steam turbine 32 receiving high pressure steam from boiler 31. The low pressure exhaust steam from turbine 32 is mixed with the compressed vapour from compressor 33, and the mixture is passed into heater 20 via line 22. The condensate from heater 20 may be removed for boiler feed water via line 21,or supplied to the condensate in receiver 12 of the first stage via line 23. The condensate formed in receivers 12 and 24 is finally removed by pump 16.
Patent GB-900856-A (GB)
Title: Improvements in or relating to sieve drum driers
IPC: F26B17/28
Filed: 1958-12-12
Abstract: 900,856. Drying apparatus. FLEISSNER G.m.b.H. Dec. 12, 1958 [Jan. 14, 1958; May 13, 1958], No. 40138/58. Class 34 (1). Whilst passing over the rotating drums 1 ... 4, Fig. 1, of a drum sieve drier a fibrous mass 5 is dried by air which is drawn into the drums by suction created therein in such manner that the lowest degree of suction is attained in drum 1 and the suction increases in each succeeding drum to a maximum degree in drum 4. The longitudinal edges 13a of baffles 13 are higher than the edges 13b. The transfer of the mass from drum to drum may be aided by curved guide plates contacting the mass between adjacent drums or rollers 8a, Fig. 4- which may be spring-loaded, adjustable, solid, hollow or perforated-asymmetrically placed between drums, may be used. In a drier having three spaced drums, the mass in passing from one drum to the next moves around the underside of a smaller diameter perforated drum in which the suction is considerably greater than in the main drums. The peripheral speed of the smaller drums may be higher than that of the main drums.
Patent GB-1274496-A (GB)
Title: Internal combustion engine block with hardening of cylinder walls
IPC: F02F1/00
Filed: 1969-08-12
Abstract: 1,274,496. I. C. engine cylinders. CATERPILLAR TRACTOR CO. Aug. 12, 1969 Sept. 3, 1968], No.40199/69. Heading F1B. The cylinder wall 11 has a hardened area 20 which terminates short of the ends of the wall. The area 20 may entered only slightly beyond the wall region occupied by the piston rings 13 at top dead centre or the area covered by the rings during reciprocation. The hardening may be effected by induction heating with the depth of hardening being of the order of 0À005 to 0À01 of an inch and extending downwardly from 0À5 inches below the top of the block 10 for approximately 1À5 inches.
Patent GB-1467691-A (GB)
Title: Heat-resistant polyurethane compositions
IPC: C08K5/13
Filed: 1974-09-16
Abstract: 1467691 Polyurethanes RHONE-POULENC SA 16 Sept 1974 [17 Sept 1973 5 July 1974] 40305/74 Heading C3R A polyurethane composition, which is heat and oxidation resistant, comprises as stabilizer, a hydroxylic spiro-bis-indane compound of the formula where R 1  represents a methyl or ethyl radical, and Z 1 -Z 6  each represent a hydrogen atom, a hydroxyl group, an alkyl radical, an alkoxy radical or a halogen atom, the amount of stabilizer preferably being from 0À1 to 10% wt. relative to the weight of the dry polymer. The stabilizer may be introduced prior to or after the polyurethane has been formed and may be incorporated as a solution in a ketone or polar solvent, e.g. dimethylformamide (DMF). Preferred stabilizers are 5,5<SP>1</SP>6,6<SP>1</SP>-tetrahydroxy- 3,3,31,31 - tetramethyl - 1,1<SP>1</SP> - spiro - bis - indane and 5,5<SP>1</SP>,6,6<SP>1</SP>-tetrahydroxy-3,3,3<SP>1</SP>,3<SP>1</SP>-tetramethyl - 4,4<SP>1</SP>,7,7<SP>1</SP> - tetrabromo (or tetrachloro)- 1,1-spiro-bis-indane. In the examples various stabilizers of the above formula are added to polyurethane solutions comprising either (1) butane 1,4-diol, dimethylformamide, dibutyltin dilaurate and either (A) 4,4<SP>1</SP>-diisocyanatodiphenylmethane and an OH-terminated polyester of adipic acid, hexane 1,6-diol and ethylene glycol (M.Wt. 200), or (B) a prepolymer of (A) in methylethylketone; or (2) ethylene glycol, DMF, dibutyltin dilaurate and a prepolymer of 4,41 - diisocyanato - diphenylmethane, polypropylene glycol (M.Wt. 1800) and trimethylol propane in MEK. Thin films are prepared from the solutions which are then heated at 120 C.
Patent GB-914710-A (GB)
Title: Improvements in or relating to stereophonic signal transmitting and reproducing systems
Inventor: BROWNE GEOFFREY D ARCY
IPC: H04H20/88
Filed: 1960-11-23
Abstract: 914,710. Multiplex pulse-signalling. MULLARD Ltd. July 20, 1961 [Nov. 23, 1960], No. 40356/60. Addition to 872,018. Class 40 (5). [Also in Group XXXIX] The stereophonic transmitting-receiving system claimed in Claim 2 of the parent Specification is modified to transmit a third audio signal (e.g. of the " storecast " type), by modulating the undisplaced alternate minima of the complex waveform with respect to the said substantially uniform level. Fig. II shows the waveform transmitted. A, B are the modulation envelopes of the stereophonic audio signals and S the displaced level of alternate minima required for synchronization at the receiver. The third audio signal C is modulated on the alternate minima which previously carried no information (see Fig. III of the parent Specification). The transmitter, Fig. 3 (not shown), includes a further coding sampler for the audio signal C similar to those shown in the parent Specification for coding the A, B audio signals, the sampling 32.5 kc. wave being in the case of audio signal C phase advanced by 90 degrees. The complex coded signal is transmitted by frequency modulation and at the receiver the audio signal C is derived by applying the discriminator output (Fig. II), to a decoder Fig. IV, with a phase such that the minima appear as positive peaks. The pentode EF is biased so as to be cut-off below a certain level of voltage at the control grid, so that the negative peaks corresponding to the stereo signals A, B are not passed. The valve output is de-emphasized in a network C4, R5, the time constant of which is such as to pass the audio C but not the sampling wave frequency.
Patent GB-982678-A (GB)
Title: Magnetic memory cell
IPC: H03K/
Filed: 1961-11-10
Abstract: 982,678. Magnetic storage devices. SPERRY RAND CORPORATION. Nov. 10, 1961 [Feb. 13, 1961], No. 40404/61. Heading H1T. A memory unit for non-destructive read-out comprises a thin film magnetic memory element 10 separated by a non-magnetic conducting shield 30 from a thin film magnetic read-out element 12 which has its axis of easy magnetization 20 at an angle to the easy axis 18 of element 10, the shield 30 introducing a delay in the appearance in film 10 of the field produced by an interrogating pulse in conductor 26 so that film 10 is virtually unaffected if the pulse in 26 is short. The direction of remanent magnetism in film 12 is biased away from the easy axis 20 to 34 by the field produced by film 10 the direction of biasing, and hence the polarity of the output produced in conductor 28 by switching film 12, depending on the direction of remanent magnetism written into film 10. The shield 30, which may be of copper, also prevents short write-in pulses in conductors 22, 24 from affecting the remanent magnetism of film 12. To give film 10 a stronger magnetic effect it may be made thicker than film 12 or of 90% cobalt, 10% iron. Specification 854,153 is referred to.
Patent GB-1023093-A (GB)
Title: Aircraft control surface trimming apparatus
IPC: G05D1/08
Filed: 1962-10-26
Abstract: 1,023,093. Automatic control of aircraft. SPERRY RAND CORPORATION. Oct. 26, 1962 [Nov. 1, 1961], No. 40564/62. Heading G3R. A servomotor operating the main control surface of an aircraft is energized in series with the armature or field winding of a servomotor operating a trimming tab on the control surface, the remaining winding of the trimming tab servomotor being energized later after a delay period. In Fig. 1, signals from an automatic flight control system 10 energize the safety series connection of armature and field windings of a servomotor 16 operating elevator 28, and field winding 14 of a servomotor 18 operating trim tab 32. When, during operation of the elevator, the control signal exceeds a predetermined value with one polarity, a Zener diode 36 is rendered conductive to operate a relay 46 so that the armature 26 of servomotor 18 is energized from a separate source 20 and trim tab 32 adjusted in the appropriate direction. When the control signal is of the opposite polarity a polarized relay 40 is operated to change over contacts 42, 44 so that a reversely connected Zener diode 38 is substituted in the energization circuit of relay 46. In one modification the armature and field windings of the trim tab servomotor are interchanged and in another the signal from the automatic flight control system is also supplied to the other winding of the trim tab servomotor to avoid using a separate source. In a further modification in which the gain of the automatic flight control system is dependent on airspeed the Zener diodes are biased in dependence on airspeed so that the value of the signal at which relay 46 operates is dependent on airspeed. In this arrangement an indicator lamp is operated if the signal persists above the predetermined value longer than a period determined by a time delay unit which is, however, shorted out when the flaps are lowered prior to landing.
Patent GB-1113620-A (GB)
Title: Garment of knitted material
IPC: A41B17/00
Filed: 1965-09-23
Abstract: 1,113,620. Knitted undergarments. SCHIESSER G.m.b.H. 23 Sept., 1965 [4 Oct., 1964], No. 40565/65. Heading A3V. [Also in Division D1] The commencement of knitting of each yarn fed to the needles of a circular multifeed machine occurs substantially at the same place so that the slight stepped effect which occurs in a tubular fabric when commencing knitting on a multifeed machine is confined to one small portion of its circumference, Fig. 2 (not shown). Subsequent tailoring to produce undergarments such as knickers enables the stepped portion 10 to be hidden by being included in a seam between a gusset strip 15 and edges formed by cuts 13 or cut out from the fabric completely by cuts 22 to accommodate the gusset strip. The gusset strip is knitted with ends substantially like the welt 1 of the knickers, Fig. 4 (not shown). In a garment such as a slip the stepped portion on the bottom edge is covered by a tab or label.
Patent GB-935152-A (GB)
Title: Improvements in the application of letters, numerals, symbols and the like characters to ferro-magnetic articles
Inventor: TETLEY FREDERICK WILLIAM
IPC: B05C17/06
Filed: 1960-11-29
Abstract: 935,152. Stencils. SWIFT LEVICK & SONS Ltd. Nov. 2, 1961 [Nov. 29, 1960], No. 40959/60. Class 100 (2). [Also in Groups XVIII and XXXV] A stencil element comprises a sheet of plastic material, e.g. polyethylene or polyvinyl chloride, in which is compounded powdered permanent magnet material such as barium ferrite. The elements, which may comprise letters, symbols, &c., or combinations of such or sheets from which are cut portions shaped as letters, symbols, &c., or combinations of such, are magnetized for attachment to articles possessing magnetic permeability in such a manner that at least one face of the element bears a plurality of alternate north and south poles. The stencil shown in Fig. 3 comprises a frame 9 of a suitable plastic and magnetic mixture having cut-outs 10 and a serrated window 11 in which may be mounted any desired combination of stencil elements 8 bearing serrations 12 engageable with those of the window.
Patent GB-1067460-A (GB)
Title: Stabilization of stereospecific spatially oriented polymers prepared from olefinic hydrocarbons
IPC: C08K5/17
Filed: 1963-10-17
Abstract: A stereospecific olefinic hydrocarbon polymer is stabilized by having incorporated therein (1) from 0.05 to 5.0 parts by weight per 100 parts by weight of polymer of a phenolic antioxidant and (2) from 0.05 to 5.0 parts by weight per 100 parts by weight of the polymer of a non-aromatic basic nitrogenous material, i.e. a nitrogen containing basic material in which the nitrogen atom is neither part of an aromatic ring, or directly attached to an aromatic ring and (3) from 0.5 to 5.0 parts by weight per 100 parts by weight of polymer of a phenolic antioxidant. The stabilizer is preferably incorporated in the polymer immediately after polymerization in the presence of a catalyst formed by the reaction of an organometallic compound and a transition metal compound, but before the polymer is recovered.  The Specification contains long lists of stabilizers (1) and (2). Stabilizers (1) may be selected from ammonia, and mono- and poly-amines and heterocyclic amines. The polymer may be cis-1,4 polyisoprene, or cis-1,4 polybutadiene.
Patent GB-1101994-A (GB)
Title: Improvements in or relating to the manufacture of chlorinated hydrocarbons
Inventor: CHUFFART ROBERT CHARLES
IPC: C07C17/361
Filed: 1964-10-08
Abstract: Carbon tetrachloride and perchloroethylene are made by (a) submitting a chlorinated hydrocarbon feed comprising tetrachlorobutadiene and/or pentachlorobutadiene to liquid phase chlorination and (b) vaporizing the product from the first stage and submitting the vapour to chlorination using an amount of chlorine in excess of that required to perchlorinate the vapour feed.  The prechlorination stage is preferably effected at 20-100 DEG  C., optionally in the presence of a catalyst, e.g. FeCl3, and the vapour phase chlorination at 450-700 DEG  C., in an empty reactor or in the presence of a fixed or fluidized catalyst bed consisting of, e.g. carbon impregnated with sodium sulphate or sand.  The hydrocarbon feed may also contain C2 and/or C4 chlorinated hydrocarbons.  In the prechlorination stage the tetrachlorobutadiene and pentachlorobutadiene are converted to hexachlorobutene and heptachlorobutene respectively. The hydrogen chloride and chlorine from the vapour phase reactor may be recycled to the prechlorination stage.
Patent GB-985229-A (GB)
Title: Rocket
Inventor: WEBSTER ROLAND CARL
IPC: F42B10/56
Filed: 1962-10-31
Abstract: 985,229. Jet propulsion nozzles. ATLANTIC RESEARCH CORPORATION. Oct. 31, 1962, No. 41113/62. Heading F1J. [Also in Divisions B7 and F3] A nozzle for a rocket motor 11 housing a solid propellant is formed by tapering the rear end of the steel casing 14, thickening at 21 and insulating line 15 and inserting a graphite throat 20.
Patent GB-1528696-A (GB)
Title: Locking thread construction
IPC: F16B33/02
Filed: 1976-10-06
Abstract: 1528696 Self-locking nuts and bolts HORACE DEAL HOLMES 6 Oct 1976 [25 Nov 1975 8 Oct 1975] 41577/76 Heading F2H A locking screw thread which is intended to be free-running relative to the thread of a co-operating member until a predetermined axial load is applied thereto comprises a sloping ramp section 16, 17, or 126 at the thread root, which ramp is inclined to the thread longitudinal axis by an angle such that the ramp takes up approximately half the maximum standard manufacturing tolerance between the thread and the co-operating member's thread in a distance equal to the length of the ramp (0À020 inch) in the axial direction. In Figs. 3-5, a buttress thread on a bolt 11 and a matching buttress thread in a nut 15 both have ramps 17, 16 at their roots. In the unloaded, Fig. 3, condition, the threads are free-running. As the nut is tightened, contact of the thread crests 23, 19 with the adjacent ramps 16, 17 takes up the radial play between the nut and bolt, which prevents loosening of the nut until a positive unscrewing torque is applied. The ramp may be provided on the nut thread or the bolt thread only. The ramp may be incorporated in other thread forms, e.g. Fig. 9, such as ISO threads.
Patent GB-1045789-A (GB)
Title: Improvements in or relating to the production of catalytic materials
IPC: C07C51/25
Filed: 1965-09-30
Abstract: Aminoxidation of olefins to nitriles or direct oxidation to aldehydes in the vapour phase is effected in the presence of catalysts comprising antimony oxide in granular form and suitable for use in fluidized bed systems which has been made by introducing the antimony oxide as a fine powder in a tubular enclosure provided with a separator preventing the loss of powdered particles, so that granules are formed by maintaining the powdered catalyst in a turbulent state under the effect of a fluidizing gas stream having a linear velocity between 40 and 130 cms./sec. measured under the working conditions of temperature and pressure.  Reference is made to the conversion of propylene to acrylonitrile on acrolein.ALSO:Oxidation catalysts containing antimony oxide in granular form suitable for use in fluidized bed systems are made by introducing a fine powder containing antimony oxide into a tubular reactor provided with a separator preventing the loss of powdered particles, and thereafter converting the powder to granules by maintaining a turbulent state under the effect of a fluidizing gas stream having a linear velocity of between 15 cms/sec. and 55 cms/sec. at N.T.P.  Distinction is drawn between "granular form" and "fine powder" in that the former phrase applies to particles of the order of tenths to hundreths of a millimetre and the latter to particles about a thousandth of a millimetre.  Additionally the catalysts may contain at least one of Su, Fe, Cu, U and Bi as oxide.  Prior to its entry in the tubular reactor the fine powder may be activated at 850 DEG C. e.g. with steam.
Patent GB-1056756-A (GB)
Title: Improvements in or relating to a mechanical device for the selection of measurement ranges and for the automatic display of selected ranges
IPC: G01D13/04
Filed: 1963-10-22
Abstract: 1,056,756. Change-speed control. CROUZET. Oct. 22, 1963 [Oct. 24, 1962], No. 41611/63. Heading F2D. [Also in Division G1] The transmission ratio in variable speed gearing in an indicating-instrument is changed simultaneously with the graduated scale by operating a single knob 18 so that a pinion 17 turns a disc 16 to indicate the scale range and ratio selected (see Division G1). A lug 21 on the pinion 17 locks the knob 18 against rotation by engaging a notch in the periphery of a hole in plate 37, but when the knob 18 is pressed down on a pin 25 and turned, the lug 21 engages under the plate 37. A cone 36 cams a cage 34 carrying a sliding gear 31 about axis c-d to disengage the drive from a mechanism R (Fig. 2, not shown), and rotation of the pin 25 through pin-and-slot connection 69 turns worm 26 in nut 29 to move gear 31 into alignment with a selected pair of gearwheels of mechanism R (Fig. 3, not shown). The lug 21 is then opposite its notch and pinion 17 is moved by spring 68 to lock pinion 17, upward movement of the pinion causing cone 36 to rise, whereby gear 31 engages the selected gear-wheels. Alternative scale arrangements and selecting mechanism are described with reference to Figs. 6 to 14 (not shown).
Patent GB-1405675-A (GB)
Title: Read head for an optical characterrecognition system
IPC: G06V10/10
Filed: 1972-09-07
Abstract: 1405675 Picture analysis COMPAGNIE HONEYWELL BULL 7 Sept 1972 [17 Sept 1971] 41643/72 Heading H4F [Also in Division G4] A read head for an optical character recognition system comprises a column of photo-cells which scans a relatively transversely moving document. The cells are divided into n groups and the cells of the groups are connected to the head output under the control of n respective inter-connected shift registers. The registers, photo-cells, and associated gates are formed as an integrated circuit. In one embodiment, Fig. 3, there are 65 photocells which are connected to the output in the repeating order 1, 3, 5, ... 63, 65; 2, 4, 6 ... 64, the odd-numbered cells forming one of the groups and the even-numbered cells the other group. The connection of the cells (not shown) to the output is controlled by shift registers 2a, 2b. The registers receive input signals E1, E2 via AND gates 5, 6 and NOR gates 7, 8 as shown. In operation a single 1-bit is stepped through each register in turn. Should a spurious 1-bit be present in either register in addition to the required 1-bit, it will be eliminated at the end of one complete scan cycle, so preventing continued incorrect gating of the photo-cells in successive cycles. By connecting the registers and gates in other ways other orders of scan are obtained, e.g. cells m, and m + 1 may be connected simultaneously to the output, m being incremented at each clock pulse, Fig. 4 (not shown). In another arrangement, Fig. 5 (not shown), the cells are connected in the repeating order 1, 2, 3, ... 64, 65.
Patent GB-1283316-A (GB)
Title: Toaster
Inventor: SATO HOSEI
IPC: A47J37/08
Filed: 1970-09-01
Abstract: 1283316 Toaster MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 1 Sept 1970 [2 Sept 1969] 41865/70 Heading A4D A toaster comprises a frame 1 defining a bread toasting compartment 5 containing electrical switchable heaters 14, a vertically movable plate 47 urged upwards by a spring 57 and movable  between an upper position and a lower position, a bread carriage 51 connected to plate 47, lever 65 for lowering plate 47 against spring 57, a latch 74 for holding plate 47 in its lower position, a weight 50 normally held in the upper portion of the toasting compartment, bread toasting controlling means, and means for releasing the weight when the toasting is complete, the latch being released by the dropped weight to allow the plate 47 to move to its upper position. The plate 47, provided with bread carriage 51, is lowered by depressing lever 65 and is held in the lower position by hook (59) of hook lever 58 engaging latch 74. The switch members 55 depress contact plates (40) to close the switch (36). Thus, heaters 14 are energized. As the temperature rises, bi-metals (27) and (28) are deflected, pushing rod 35 and so rotating plate 84 about pivot pin 85. The lower end of plate 84 abuts rim 89 causing weight receiving lever 86 to rotate. When the bread is toasted, lever 86 releases weight 50 on to the arm 60 of hook lever 58. The hook lever rotates against the spring 63 releasing the latch 74 allowing spring 57 to elevate plate 47 and the bread carriage 51.