baber/WOPTO huggingface dataset:
Patent GB-1233457-A (GB)
IPC: H04R1/40
Filed: 1968-07-11
Abstract: 1,233,457. Microphones. SONY CORP. 11 July, 1968 [13 July, 1967], No. 33120/68. Heading H4J. A microphone assembly comprises a wave type microphone 2 (Figs. 1, 3) incorporating an acoustic pipe 13 having a first microphone capsule 15 closing one end thereof and a gradient microphone 1 formed either of two microphone capsules 3, 4 (Fig. 1) or of the first microphone capsule 15 and a second independently mounted microphone capsule 3 (Fig. 3). The wave type and gradient microphones 2, 1 are so mounted that their directivity patterns coincide. A circuit includes filters arranged so that low frequency signals derived from the gradient microphone 1 are combined with medium and high frequency signals derived from the wave type microphone 2. Capacitor microphone capsules are preferably used although dynamic or ribbon type capsules may be employed. Microphone 1 1 comprises two similar capacitor microphone capsules 3, 4 (Fig. 1) each having a figure of 8 or unidirectional characteristic. Polarizing voltages are applied to capsules 3 and 4 from bias sources 6 and 7 through resistors 8 and 9 respectively. The D.C. biases on the capsules 3 and 4 are of opposite polarity to obtain a difference between the outputs of the capsules 3 and 4. The output of capsule 3 is connected through capacitors 10 and 11 to the gate of F.E.T. 12. The output of capsule 4 is applied to the gate of F.E.T. 12 through capacitor 11. Capacitors 10 and 11 block D.C. components. Wave type microphone 2 comprises pipe 13 closed at end 13a and having apertured members 14 filled with felt or other acoustic resistance material (16), Fig. 2 (not shown). Capacitor microphone capsule 15 is connected to polarizing source 6 through a resistor 20. The microphones are in a common housing 17. Capsule 15 is connected to the gate of F.E.T. 19. The drains of F.E.T.'s 12 and 19 are earthed through resistors 22 and 23 to provide source follower circuits. The output of microphone I is derived from the source of F.E.T. 12 and the output of microphone 2 is derived from the source of F.E.T. 19. The source of F.E.T. 12 is connected through a capacitor 24 to a low pass filter 25 and the source of F.E.T. 19 is connected to a high pass filter 26. The filters 25, 26 have approximately equal cut-off frequencies and their outputs are connected through a transformer 27 to terminals 28a, 28b. Sensitivity differences between microphones 1 and 2 are regulated by voltages applied to capsules 3, 4, 15 and to F.E.T.'s 12, 19. Alternatively (Fig. 3) capsule 15 serves as a portion of the gradient microphone 2 and as the wave type microphone 1. The output of capsule 15 is applied through high pass filter 26 and capacitor 18 to F.E.T. 19 and through a low pass filter 25<SP>1</SP> (identical with filter 25) to F.E.T. 12. The output of capsule 3 is applied to F.E.T. 12 through low pass filter 25 and capacitors 10, 11.
Patent GB-1233795-A (GB)
IPC: C10G9/14
Filed: 1968-10-04
Abstract: 1,233,795. Thermal cracking. BADISCHE ANILIN- & SODA-FABRIK A.G. 4 Oct., 1968 [7 Oct., 1967], No. 47183/68. Heading C5E. Olefins are produced by thermal cracking of crude oil or other oil containing non-vaporizable residues in admixture with steam in a cracking furnace having externally heated coiled tubes at temperatures of 750-950‹ C., the mixture of oil and steam being first preheated to 300- 500‹ C. in the convection zone of the furnace, passed through a separating zone in which non- vaporizable constituents are separated, optionally cooled by 10-100‹ C. thus liquefying a small part of the gas stream which may be separated, optionally further preheated to 550- 700‹ C., then cracked and finally the cracked gas cooled by direct cooling or by a combination of direct and indirect cooling. The ratio steam: oil is suitably 0À5-2: 1 by weight. Examples yield mainly ethylene and propylene together with a liquid product. A high-aromatic oil may be obtained by cooling the cracked gas to 170-200‹ C., this oil being suitable for quenching of the cracked gas leaving the furnace.
Patent GB-1250633-A (GB)
IPC: C07C5/11
Filed: 1968-08-19
Abstract: 1,250,633. Dihydronaphthalene compounds. NATIONAL DISTILLERS & CHEMICAL CORP. 19 Aug., 1968 [18 Aug., 1967; 31 Aug., 1967], No. 39632/68. Heading C5E. [Also in Division C3] Aromatic hydrocarbons having a naphthalene nucleus are hydrogenated to corresponding dihydro compounds using metallic sodium and an aliphatic alcohol as the source of hydrogen, the sodium being used in the form of particles of average size 0À5-50 microns and being dispersed in an inert diluent miscible in the reaction system. A solvent for the naphthalene compound is preferably present in a ratio of at least 4:1 by weight with respect to the naphthalene compound, and may be the same material as the diluent. Examples relate to the production of dihydronaphthalene, mainly the desired 1,4-isomer.
Patent GB-1258003-A (GB)
IPC: G03G21/00
Filed: 1969-02-27
Abstract: 1,258,003. Electro-photographic; apparatus. RANK XEROX Ltd. Feb.25, 1970 [Feb.27, 1969], No.10629/69. Heading G2H. A rigid metal cylinder 11 has a helical groove 13 for a rubber tube or tubes (21, 24) Figs. 4 and 5 (not shown) which can be inflated and deflated so that a photo-conductive sleeve 18 can be easily slid on and then firmly held. Inflatable pads may alternatively be used.
Patent GB-1265022-A (GB)
IPC: G08B13/08
Filed: 1969-03-26
Abstract: 1,265,022. Intruder alarm. SHORROK DEVELOPMENTS Ltd. 27 Jan., 1970 [26 March, 1969], No. 15829/69. Heading G4N. A burglar alarm system comprises two circuit loops 12-13 and 14-15, each carrying a number of series-connected normally-closed contacts, the four wires of the two loops passing through the same cable 11. The two loops may also be connected by normally open contacts 37. Thus relay 9 is deactivated if either, any of the series-connected contacts are opened, breaking the current supply, or any of the contacts 37 are closed shorting the relay out. The relay will also be deactivated if the cable 11 is cut or the wires in the cable bared and the wrong wires shorted. The normally closed contacts may be associated with windows and doors &c. and the normally open contacts with floor mats. A system for deactivating the alarm for a short period after the alarm is switched on, and also for delaying the alarm signal on detection of an intruder is provided. This comprises capacitor (CA1) and (CA2) and Fig. 3 (not shown), which discharges through resistors (VR12) and (VR15) and is connected to transistor switch (TR1-TR2) and (TR3-TR4) which in turn trigger relays (F1) and (E1 Indicator lights R and G indicate whether the circuit is operating correctly. The alarm itself may be a bell. U.K. Specification 1,091,304 is referred to.
Patent GB-1265144-A (GB)
IPC: C08G75/20
Filed: 1968-03-27
Abstract: 1,265,144. Polyarylsulphones. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 Feb., 1969 [27 March, 1968], No. 14765/68. Heading C3R. Novel polymers containing units of formula are obtained by polycondensation of 3-phenoxybenzenesulphonyl chloride, alone or with other aromatic sulphonyl chlorides or by polymerizing an alkali metal salt of a halo-phenol of formula (where X is halogen) by displacement of alkali metal halide, alone or with an alkali metal salt of 4 - (4 - halogenophenylsulphonyl) phenol or in a reaction mixture containing a double alkali metal salt of a dihydric phenol and a dihalobenzenoid compound having an inert electronwithdrawing group in at least one of the positions ortho or para to the halogen atoms. In examples polymers are obtained by heating the potassium salt of 3-(4-chlorophenylsulphonyl) phenol alone and mixed with the potassium salt of 4(4-fluorophenylsulphonyl) phenol.
Patent GB-1265216-A (GB)
IPC: E04F17/02
Filed: 1969-07-11
Abstract: 1,265,216. Flue sections. PARK SECTIONAL INSULATING CO. Ltd. 31 July, 1970 [11 July, 1969], No. 35047/69. Heading F4J.  A tubular flue section 10 comprises, a layer 11  of glass or mineral wool impregnated with a sodium silicate solution which is allowed to set and is then treated to form a layer of a mixture of coal tar pitch and epoxy resin. The sections which may be circular, oval, rectangular or square in section have spigot 13 and socket 14 ends enabling assembly of a number of sections. Alternatively, the ends may be chamfered for interengagement, using band clips if necessary. The coating may be a thermosetting synthetic resin or coal tar pitch alone.
Patent GB-1265852-A (GB)
IPC: H04N9/07
Filed: 1969-11-05
Abstract: 1,265,852. Colour television. FERNSEH G.m.b.H. 5 Nov., 1969 [6 Nov., 1968; 27 Sept., 1969], No. 54189/69. Heading H4F. In a colour television camera red R and blue B signals of small resolution and a high resolution luminance signal W, Fig. 1, are derived, the luminance signal having a spectral distribution lying between that of the primary colour green and that of the sensitivity curve of the human eye. The low frequency component W T  of the signal W is passed by a frequency switch 4 to a matrix 5 together with the signals R and B which are preferably limited to smaller and equal band widths by low-pass filters 2 and 3, low frequency signal W T  exhibiting the same band width as band width limited signals R T  and B T . In matrix 5 (by subtraction and addition) signals G T  and Y T  of the same bandwidth are produced, and a complete luminance signal Y having the full bandwidth is formed by adding to signal Y T  the high frequency component W H  of the signal W coming from frequency switch 4 if necessary after passing through a vertical and horizontal aperture corrector 7. With this arrangement colour fringes, which occur in the reproduced picture due to misregistration of the different colour images upon the camera tubes when there are sudden changes in brightness or colour tone, are reduced since smaller components of the red and blue signals are required for forming the low frequency component of the luminance signal and the green signal in matrix 5. A possible disadvantage of the above arrangement is that the luminance signal only exhibits the precise spectral distribution in the lower frequency region. To avoid this disadvantage, Fig. 2, the red signal is arranged to have the same resolution as the luminance signal W. Matrix 12 thus forms a luminance signal Y of higher resolution to which (after gamma correction 13) may be added 17, a contour signal derived by double sided aperture correction 18 of signal W. In this arrangement the signal W is not bandwidth limited. The blue signal may have a smaller resolution because for forming the signals Y and G only very small components of the blue signal are required. The matrix circuit 12 which includes impedance transformers is described with reference to Fig. 3 (not shown).  In Fig. 2 to obtain the same high resolution for signal R as the signal W, the light splitting for the camera tubes is effected by a prism having dichroic layers so that both images are equivalent in respect of sharpness and magnitude. A small image is preferably projected on the blue signal camera tube by an intermediate objective so that with a corresponding smaller component of the light flux the same illumination intensity and thereby the same signal to noise ratio is obtained.
Patent GB-1288217-A (GB)
IPC: B65D55/16
Filed: 1968-12-20
Abstract: 1288217 Pipe stopper JOSEPH LUCAS (INDUSTRIES) Ltd 8 Dec 1969 [20 Dec 1968] 60805/68 Heading F2P A plastics pipe stopper includes two parts 10, 11 engaging each other by means of snap engaging formations 14, 15 and having a surface 17 for gripping a pipe 9 by means of an interference fit with its bore. The snap fit is made possible in the embodiment shown by the formation 15 comprising a number of circumferentially spaced segments 14. Such a pipe stopper may be used on a vehicle steering column and might then incorporate a transparent cover 20 over a decorative disc 19. Alternatively the part 10 might include a horn push mechanism. Parts 10, 11 may be moulded or alternatively part 11 may be extruded in strip form and bent into a ring.
Patent GB-1295976-A (GB)
IPC: B25B27/28
Filed: 1970-08-26
Abstract: 1295976 Assembling bushings; air lubricator GENERAL TIRE & RUBBER CO 26 Aug 1970 [28 Aug 1969] 41144/70 Headings F2A and F2S During the assembly of an annular elastomeric bushing, a film of gas, preferably air, lubricates the surfaces of the elastomeric insert 2 and one or both rigid sleeves 4, 6. The sleeves 4 and 6 are placed in a nest 18 of a lower assembly (12) and the elastomeric insert 2 is held frictionally on a spindle 30 of an upper assembly (8) which is initially spaced from the lower assembly. In operation the spindle 30 on its piston-rod 32 moves down relative to the rest of the upper assembly until the insert is positioned just above the nest. Then the rest of the upper assembly (ram 34, guide seal 36, and collector 60) moves down until the guide seal 36 contacts the nest 18. The ram 34 is then actuated to force the insert into and on to the sleeves, and simultaneously high-pressure air is introduced (a) through the passageway 50 in the piston-rod 32, and through the spindle to the interior of the insert and (b) through inlets 38 in the guide seal, and through annular chamber 66 to the exterior of the insert. The spindle 30 may be splined (Fig. 7, not shown). The splines may be curved (152, Fig. 9, not shown) so that the air is swirled helically between the inner sleeve 6 and the insert. The air inlets (138, Fig. 9) may be tangential to the outer sleeve. The air is introduced at a pressure of between 250 p.s.i. and 3000 p.s.i. and at a flow rate of between 1 and 10 cubic feet per second. The gas may be nitrogen alone.
Patent GB-1296634-A (GB)
IPC: A45B19/04
Filed: 1971-07-09
Abstract: 1296634 Shortenable umbrellas BREMSHEY A G 9 July 1971 [22 July 1970 24 July 1970 15 June 1971] 32397/71 Heading A4P A shortenable umbrella, preferably having a substantially rectangular cross-section transverse to telescopic stick 1, Fig. 1, axis when closed, has a handle 2 with a recess 46 receiving a sleeve 41<SP>1</SP> of a main slider 41 when the umbrella is closed, a pin 47 projecting from the bottom of the handle to guide the up and down sliding movement of a stick support plate 45 in recess 46, and a catch retaining the plate 45 in its upper limiting position. The pin 47 slides in the lower hollow end of a lower, inner, stick part 1<SP>1</SP> secured to a bush 48 integral with plate 45 and having a slot 52 in which a hook 50 of a catch on sleeve 41<SP>1</SP> may engage. The plate 45 is retained in its upper and lower positions by a resilient ring 54 cooperating with handle projections 55, 58. The plate-retaining catch may alternatively comprise a spring-loaded ball (61) in the pin 47, Fig.3 (not shown). In an alternative handle, Figs. 5-8 (not shown), the pin 47 is surrounded by a metal tube (74) and bevelled peripheral edges of the plate (45) co-operate with integral inward projections (55), (58) from the wide or narrow side walls of the generally rectangular recess 46 to retain the plate 45 in its upper or lower position, the handle walls being resilient. Projections (77) at the upper corners of recess 46 limit the upward movement of the plate. The umbrella further comprises telescopic ribs having U-shaped inner and middle parts 6, (7), Fig. 9 and Fig. 4 (not shown) and outer wire parts (8), the inner parts 6 being pivoted to a crown 3 having a cap (37), Fig.10 (not shown) retaining the cover B. Main struts 12 are pivoted to the main slider 41 and auxiliary struts 11 are pivoted to an auxiliary slider 14 at their inner ends and to rib braces (10), Fig. 4 (not shown), at their outer ends, the outer ends of braces (10) being pivoted to the ribs and tension links (13) extending between the main struts 12 and braces (10). Each rib-part 6 is pivoted to the crown by means of an axle wire in a groove (30), Fig.12 (not shown) in the crown, there being for each rib-part 6 a respective pair of parallel slots in the crown to receive the side webs of the U-section of the part 6 and a crossslot connecting said pair of slots to receive the middle web of the U-section. The struts 11 and 12 are similarly of U-section, at least near the sliders, and are similarly pivoted to the sliders 14 and 41 respectively. The auxiliary slider 14 has a sleeve 42 extending through the main slider 41 and having a slot 43 in which a catch 44 on the stick engages when the umbrella is open.
Patent GB-1297041-A (GB)
IPC: B01D53/22
Filed: 1970-08-03
Abstract: 1297041 Separating gaseous mixtures BERTIN & CIE and ENTREPRISE DE RECHERCHES ET D'ACTIVITES PETROLIERES-ELF 3 Aug 1970 [11 Aug 1969] 37381/70 Heading B1L Gas mixtures containing components having different atomic or molecular weights are separated by passage under pressure through orifice 3 at supersonic velocity into chamber 4. Pilot circuits 9, 10 which also open into chamber 4 act as a fluidic flip-flop, causing the effluent stream from orifice 3 to oscillate uniformly and continuously across inlet orifices 5 of tubes 8 from one extreme position to the other (see also Fig. 4, not shown). As the stream sweeps across the orifice 5 of any one tube a wave pulse of the mixture passes into the tube in which a partial mass separation occurs, in consequence of which a fraction enriched in the heavier components is removed by tube 18, while the fraction enriched in lighter components is collected at the outlet 8c of tubes 8. Stage enrichment of a few tenths % were obtained in separating air into O 2  and N 2 , and in separating <SP>36</SP>A and <SP>40</SP>A. The separation units may be employed in cascades.
Patent GB-1301412-A (GB)
IPC: B23K35/32
Filed: 1971-04-30
Abstract: 1301412 Tungsten base alloy; powder metallurgy P R MALLORY & CO Inc 30 April 1971 [11 May 1970] 12422/71 Headings C7A and C7D A welding alloy comprises 40-80% W, 10-40% Ni and 1-25% Fe and up to 5% of one or more of Co, Cu, Cr, Ti, Re, Ta, Mo and V. The powder mixture may be pressed or extruded, presintered at 400-1200C. and sintered at 1430-1470C. It may then be swaged.
Patent GB-1303251-A (GB)
IPC: F02B75/02
Filed: 1969-03-07
Abstract: 1303251 Two-stroke engines B HOOPER and J E FAVILL 27 Feb 1970 [7 March 1969] 12077/69 Heading F1B In an engine having at least one pair of steppedcylinders 15, 16 and 17, 18 which are crossconnected by respective pairs of transfer passages 75, 76 and 61, 62, the transfer passages open to the working parts 15, 16 of the cylinders through respective inlet ports 47, 48 and 50, 51, Fig. 4, which are arranged symmetrically with respect to the respective exhaust port 49 or 52. First transfer passages 75 and 61 between the cylinder pair cross each other as do second transfer passages 76 and 62 and parts of the first and second transfer passages 61 and 62 or 75 and 76 which feed a working part 15 or 17 are disposed on opposite sides of the respective cylinder. The transfer passage portions 66, 71 and 80, 86, Fig. 4, immediately upstream of the inlet ports 47, 48 and 50, 51 are so disposed that the flow paths of the charge of air or mixture entering the working part 15 or 17 have an upward component of velocity and meet adjacent the wall thereof opposite the exhaust port 49 or 52 so that the charge is directed upwardly towards the cylinder head. In the embodiment shown portions of the transfer passages are defined in a plate 24 interposed between the crank-case 10 and the cylinder block 12 and recesses 62, 64, 78, 84 in the crank-case and recesses 27, 28, 38, 39 in the cylinder block are closed by the plate to define parts of the transfer passages. The charge is drawn into the pumping parts 16 and 18 through reed valves 59, Fig.3. The first and second passages (172, 173), Fig.7 (not shown), feeding a working part (171) may be connected by a smaller passage (177) which equalises the pressure therein. An auxiliary transfer passage (187), Fig.8 (not shown), may lead from one of the transfer passages (181) feeding a working part (180) to an inlet port (186) in the working part which is located opposite the exhaust port (188). An auxiliary transfer passage (187a) may lead to the auxiliary inlet port (186) from the other transfer passage (182). The plane (197), Fig.9 (not shown), containing the axis of a cylinder and passing symmetrically through the exhaust port (196) may be inclined to the plane passing through the cylinder axes. In a further embodiment, Fig. 5 (not shown), the crank-case is formed in two parts (90, 91) each containing the pumping part (94 or 98) of one cylinder and portions of the four transfer passages (102, 110, 116, 123). In another embodiment, Fig.6 (not shown), parts of the transfer passages (150, 153, 158, 162) to and from passages in the cylinder block (130) communicating with the pumping and working parts of the cylinders are connected by passages defined at least in part by pairs of members (146, 148 and 147, 149) mounted on opposite sides of the cylinder block. The pairs of cylinders may be opposed or in V-formation.
Patent GB-1309145-A (GB)
Title: Dual circulation steam boiler
IPC: F22B29/02
Filed: 1970-04-24
Abstract: 1309145 Dual-circulation boiler FOSTER WHEELER JOHN BROWN BOILERS Ltd 24 April 1970 19877/70 Heading F4A A dual-circulation vapour generator comprises a primary path with natural circulation, a secondary path with forced circulation, and a steam drum having a "blow-down" orifice between the primary and secondary paths. In an embodiment, a steam boiler has a steam drum which comprises two separate portions 104, 106 for the primary and secondary paths interconnected by a "blow down" orifice 132. The secondary steam and water mixture enters via pipes 64 to separator 108, the water recirculating via downcomer 72, the steam passing through passages 114, where its vaporized silica is removed by the feedwater from inlet 116. The primary steam and water mixture enters via pipes 78, 84 to separator 118, the steam mixing with the steam from the secondary and passing through drier 124 to outlet 126, the water passing either to the primary downcomer 86 or to the secondary downcomer 72 via the "blow down" orifice. The secondary path may be provided with a "blow-off" means.
Patent GB-1310555-A (GB)
Title: Constructional element
IPC: A47B96/14
Filed: 1970-07-13
Abstract: 1310555 Angle bars J A MACKENZIE 13 July 1970 33937/70 Heading E1K Elements of L-section cross-section comprise two metal flanges 4, 11 joined at right angles each flange having at least one longitudinally extending row of apertures. Each row of apertures comprises two types of apertures each type in alternation with the other; the first type of aperture 6 providing at least three points of contact with the shaft of a bolt passing therethrough to prevent movement in the plane of the flange and the second type of aperture 7 being generally quatrefoil or cruciform in outline allowing significant play longitudinally and laterally of the element. The holes 6 may be round or square and adjacent rows of alternating apertures on the same or different flanges are completely out of phase. Where more than one row is provided in a flange the outer row may not have the holes 7. The maximum width of the hole 7 may be equal to the diameter of the hole 6 plus twice the thickness of the flange.