baber/WOPTO huggingface dataset:
Patent GB-1295859-A (GB)
IPC: G05D1/00
Filed: 1969-09-03
Abstract: 1295859 Transmitting information photoelectrically ELLIOTT BROS (LONDON) Ltd 28 Aug 1970 [3 Sept 1969] 43587/69 Heading G1A [Also in Division G3] In a signal transmission system, an electric signal from each of a number of detectors sensing the same variable is applied to a corresponding device and, through unidirectional electromagnetic radiation transmission paths, to each of the other devices, the outputs of all the the devices being used to control a single device. As applied to the pitch channel of an aircraft automatic pilot, signals from a gyro, a filtered rate gyro and an altimeter are combined and applied at 35a Fig.2. Three further groups of instruments responsive to the same variables are provided and the combined signals from each group applied at 35b, 35c, 35d. Transmitters 39, e.g. of gallium arsenide, gallium arsenide phosphide or even electric lamps, responsive to the magnitude of each signal combination, produce electromagnetic radiation e.g. infra-red or visible light which is transmitted through glass or plastic fibres 41 to receivers 43, e.g. photo-transistors or diodes, which produce electrical signals for comparison at 37a-37d with those from the instruments in each channel. Units 37a-37d produce a signal, e.g. the next to the lowest or next to highest of the four signals, which is the same for each channel, and these signals control separate follow-up hydraulic actuators (not shown) the outputs of which are combined to control the elevators.
Patent GB-1296363-A (GB)
IPC: H04B10/50
Filed: 1969-12-11
Abstract: 1296363 Photo-electric switching circuits SHARP KK 11 Dec 1969 [11 Dec 1968 (2)] 60623/69 Heading G1A [Also in Divisions G4 and H3] A switching circuit uses a light-emitting negative resistance semi-conductor element 1 (such as a pnpn device) connected to an impedance 2-C and a D.C. source 3-C, and receives a control signal to hold the state of the element in one or the other of two conditions. The element may be set to a high current condition (light-emitting condition) by an input light signal to a photosensitive diode 14, or to a low current condition (no light output) by an input light signal to a photosensitive diode 15. The diode 14 may be in series with the impedance (7), Fig.6 (not shown). NAND and NOR circuits are made by arranging a plurality of photo-sensitive diodes in series and in parallel respectively across the element 1 Figs.14 and 15 (not shown). In bistable embodiments the impedance 2-C and the D.C. supply are selected to make the load line (D or C), Fig.13 (not shown) cross the v-i characteristic of the element at a low current and at a high current point. The element then remains in one or other state after the end of a trigger input which may be an electric pulse Fig.10 (not shown), positive to increase the current and  negative to reduce it. Two elements may be effectively cross-coupled by arranging a photosensitive diode across each (38, 39), Fig.16 (not shown) and exciting each diode with light from the opposite element (30 or 31); the trigger input may be a light or electric signal. A plurality of such cross-coupled bistables Fig.22 (not shown) have all their light outputs added in an analogue device (108). Another form of cross-coupled pair Fig.17 (not shown) merely has an impedance connected between the junction point of one element (30) to its load impedance (32) and the junction point of a second element and impedance (31, 33). In another bistable embodiment Fig.18 (not shown) a photo-diode (47) across the series load impedance of the element, similar to 14, Fig.9, receives the element's light output to effect a latching action; triggering is only possible however (by a positive electric pulse) when a further external light source "primes" the diode (47). A series of these bistables (181, 182, &c.), Fig.20 (not shown) forms a shift register, and uses a two phase clock source (56, 57). The fabrication of the pnpn element 1 is briefly described.
Patent GB-1302163-A (GB)
IPC: F04B1/053
Filed: 1970-10-24
Abstract: 1302163 Reciprocating pumps MACTAGGART SCOTT & CO Ltd R C RUSSELL and R BIRD 15 Oct 1971 [24 Oct 1970] 50628/70 Heading F1A In a radial cylinder pump comprising a plurality of stationary cylinders 13 mounted in a casing 12 and having spring-loaded pistons 14 engaging a rotatable eccentric 57 via bearing 58, a non-return delivery valve 20a in each piston is loaded by a spring 21 and controls flow from the cylinder to an outlet manifold 38 via passages 24, 23, cylinder groove 22 and passages 25, 36 and 37, a poppet-type suction valve 43 being mounted in each cylinder. The cylinders are secured in the casing by a bayonet coupling comprising cylinder projections 51 engaging casing recesses 52. Eccentrics of opposite eccentricity to eccentric 57 are mounted on either side of eccentric 57, Fig.1 (not shown). The suction valve body 40 is secured by a set screw 53.
Patent GB-1303720-A (GB)
IPC: G10L19/02
Filed: 1970-11-19
Abstract: 1303720 Automatic gain control STANDARD TELEPHONES & CABLES Ltd 19 Nov 1970 54989/70 Heading H4R In an automatic gain control circuit, e.g. for use in a vocoder-type helium speed processor, the gain of an amplifier 2 is controlled by the largest of a number of signals fed to a gating logic 6. The gain controlling signal is fed to the amplifier 2 via a gate circuit which is disabled when the signal is below a predetermined threshold, and the signal from the gate is fed to the control element of the amplifier via a tank circuit 7 providing delay of the response of the control element to changes in the level of the control signal. In addition switching of the gate is effected via a delay circuit on a threshold detector output so that the gate operation is delayed relative the signal level changes. As described the amplifier gain is controlled by a fet, T1, Fig. 2, in the negative feedback circuit of the amplifier. A second fet T2 is used as the gate to interrupt the control signal path when the control signal is below a predetermined level. Circuit 7 provides smoothing of rapid variations of the control signal and restoration of the control signal slowly to a predetermined value when the gate circuit is inhibited. The maximum signal at the outputs of the lower channels of the vocoder analyser is selected by a diode matrix forming the gating logic 6, Fig. 3 (not shown). It is suggested that the gain controlling element may be a photo resistor whose value is controlled by a light source whose intensity depends on the control signal.
Patent GB-1307367-A (GB)
Title: Stator blades
IPC: F01D9/04
Filed: 1969-06-26
Abstract: 1307367 Stator blades; axial flow compressors DEFENCE SECRETARY OF STATE FOR 16 June 1970 [26 June 1969] 32369/69 Headings F1C and FIT A stator blade, e.g. for an axial flow compressor or nozzle of a gas turbine engine, having radially inner and outer shroud portions 30, 32 has a working portion curved to a shape similar to the shape which would be assumed by a straight but otherwise substantially identical blade in the predominant vibratory mode during use. In Figs.3, 4 the working portions 28, 28a are curved to the shapes of the first and second vibratory modes respectively, whilst in Fig. 5 (not shown) the shape is that of the third vibratory mode. The amplitude of the curve is greater than that assumed by the straight vibrating blade. The construction reduces blade vibration.
Patent GB-1309738-A (GB)
Title: Method of and apparatus for use in the sorting of translucent material  containers
IPC: B07C5/12
Filed: 1969-07-12
Abstract: 1309738 Sorting bottles DAWSON & BARFOS Ltd 10 July 1970 [12 July 1969] 35221/69 Heading G1A In an arrangement for sorting a series of glass bottles in which a light beam is directed through the material forming the base of the bottle and in a direction parallel to the base of the bottle onto photo-sensitive means, whereby different signals from the photo-sensitive means due to different colours can be used for sorting the bottles.  In an embodiment glass bottles of two differing colours 10 and 12, Fig.2, are fed into an infeed startwheel 16. The bottles then pass on to a main startwheel 20 where the bottles are sensed for sorting purposes so that each bottle can be directed to a conveyor 22 or a further conveyor 24 depending on its colour. The sensing arrangement comprises a light source 40 and a photo-  electric detector 42, Fig.2, with the startwheel 20 carrying a suitably placed inclined mirror 44, for each bottle, as shown, which directs the light beam via an aperture 46 into the base of the bottle being sensed. The output of the photo-electric detector 42 is used to sort the bottles and to direct the bottles to a suitable conveyor.
Patent GB-1311781-A (GB)
Title: Method of producing polymer containing compositions
IPC: B01F13/08
Filed: 1970-03-13
Abstract: 1311781 Electro-magnetic mixing NAUCHNO-ISSLEDOVATELSKY I KONSTRUKTORSKOTECHNOLOGICHESKY INSTITUT NIIEMALKHIMMASH 13 March 1970 12069/ 70 Heading B1C [Also in Divisions C1 C3 and H1] A polymer-containing composition is prepared by subjecting to the influence of a rotating electromagnetic field, a mixture of a polymer with a particulate material at least part of which is ferromagnetic. The magnetic field rotating for example at 3000 r.p.m. and having a preferred intensity of at least 0.1 teala, causes rotation of the ferromagnetic particles with superficial disintegration of the particulate material to sizes down to colloidal. The polymer may be used in liquid or solid powder form. The particulate material may be wholly ferromagnetic e.g. iron, cobalt, nickel or alloys thereof or comprise also non-ferromagnetic material e.g. aluminium, copper, lead, molybdenum disulphide, graphite or a metal oxide e.g. titania. The ferromagnetic material may be in cylindrical form 6-7mms long; preferably it is coated with a protective film of a polymer whereby polymer compositions containing non-magnetic particulates and free from ferro-magnetic material may be obtained. Colloidal dispersions of ferromagnetic metal particles in polymer can be obtained for example by flowing the polymer continuously through the system, the larger metal particles being retained by the magnetic field. In typical Examples: (1) a mixture of poly-tetrafluoroethylene and steel particles in ethanol is treated yielding polymer containing 0.05% colloidal steel and nickel may replace the steel; (2) a mixture of an epoxy resin, aluminium powder and steel particles is treated, the mixture is then settled and resin containing 0.02% aluminium recovered and polymerised with a polyethylene polyamine prepolymer; (3) a mixture of epoxy resin and cast iron chips is treated yielding a resin sol of colloidal iron; (4) a mixture of liquid synthetic resin, epoxy resin, triethanol amine and steel particles is treated yielding a product containing 0.02% colloidal steel which is compression moulded; (7) a mixture of poly-tetrafluoroethylene and 10% powdered aluminium or nickel is intermixed using ferromagnetic particles coated with polytetrafluoroethylene; (9) a mixture of aluminium powder and 10% phenol-formaldehyde resin is intermixed using steel particles. Other intermixtures mentioned are of polycarbonate with titania or aluminium powder; polyamide and nickel powder; and polytetrafluoroethylene with nickel powder and graphite or molybdenum disulphide.
Patent GB-1315997-A (GB)
Title: Method of preparing 4,4-dimethyl-1,3-dioxane
IPC: C07D319/06
Filed: 1970-09-04
Abstract: 1315997 4,4-Dimethyl-1,3-dioxane VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY INSTITUT NEFTEKHIMICHESKIKH PROTSESSOV 10 Aug 1971 [4 Sept 1970] 42446/70 Heading C2C 4,4 - Dimethyl - 1,3 - dioxane is prepared by reacting isobutylene with formaldehyde in an aqueous solution of sulphuric acid, removing an aqueous phase from the reaction zone, dissolving gaseous formaldehyde in this phase and recycling it to the reaction zone. The isobutylene may be used in the form of a C 4  hydrocarbon fraction containing isobutylene or as a fraction obtained by pyrolysis of gasoline.
Patent GB-1316276-A (GB)
Title: Separation of chlorophenols
IPC: C07C37/72
Filed: 1969-12-12
Abstract: 1316276 Separation of chlorophenols COALITE & CHEMICAL PRODUCTS Ltd 3 Dec 1970 [12 Dec 1969] 60806/69 Heading C2C A method for separating a mixture of polychlorophenols comprises contacting the mixture with an alkaline solution to give an extract in which the proportion of one of the polychlorophenols to another polychlorophenol is greater than in the said mixture. Examples 1 and 2 describe the separation of 2,5-dichlorophenol from a mixture containing 2,4-dichlorophenol, 2,6 - dichlorophenol and 2,5 - dichlorophenol. In Examples 3 and 4, the 2,6-dichlorophenol is separated from 2,3-dichlorophenol.
Patent GB-1321832-A (GB)
Title: Production of foodstuffs
IPC: A23P30/10
Filed: 1969-06-26
Abstract: 1321832 Moulding foodstuffs &C UNILEVER Ltd 22 June 1970 [26 June 1969] 32299/69 Heading B5A Articles, for example crinkled chips, of foodstuff material, for example mashed potato or minced meat, are moulded in an apertured slider movable in a closely fitting longitudinally ribbed or grooved channel from a feed station to a discharge station. In the embodiment of Fig. 1, material is fed through a filling station 5 provided with a spring loaded pressure fluctuation damping piston 7 into either of two mould cavities 2, 2<SP>11</SP> located in a plate reciprocable within a channel in the housing 4. The side walls of the cavity are corrugated as are the walls of the channel so as to give an article crinkled on four surfaces. In operation, the reciprocation of the plate brings one cavity under the filling station whilst the previously filled other cavity is moved to the appropriate of a pair of air ejection stations 6 located on either side of the feed station. In the embodiment of Fig. 4, a cavitied plate is reciprocated under a central air ejection station 16 and a pair of piston dampened feed stations 15, the material from the cavities being ejected into a container 20. Different materials may be fed to the stations 15 to form a layered product, for example, minced meat may be fed to one and mashed potato to the other to form a multilayered shepherds pie. The cavities and channel of the housing are again provided with corrugated walls to provide crinkled layers, the upper layer of the pie thus presenting a crinkled surface. In the embodiment of Fig. 5, the reciprocating plate is replaced by a cavitied table which is either oscillated to bring cavities into and out of alignment with feed and discharge stations 25 and 26 respectively or which is continuously rotated to do so. Sanitation station 27, at which the mould cavities are cleaned, is provided. In the embodiment of Fig. 9, a cylindrical member apertured at 32 is rotatable between the outer wall and inner fixed core of a housing 34 between a feed station 35 and an air ejection station 36. The member may be oscillated to bring the apertures alternately into register with the stations or may be continuously rotated to the same effect.
Patent GB-1324076-A (GB)
Title: Conveyors
IPC: B65G15/60
Filed: 1970-07-13
Abstract: 1324076 Endless conveyers DUNLOP HOLDINGS Ltd 13 July 1970 [8 Oct 1969] 49340/69 Heading B8A Carved portions 12, 14, 17, 18 in the forward and return paths of an endless conveyer are supported along each edge by a guide means 19, 20. The guide means may comprise an appropriately curved plate (30), Fig. 2 (not shown), with a porous surface (32) adjacent the conveyer and a supply of pressurized air to create a gas cushion between the plate and the conveyer. The porous plate may be replaced by a hollow body with valve controlled operatives facing the conveyer. Alternatively the plate and the conveyer may have an anti-friction coating e.g. p.t.f.e. or may have magnetic surfaces of opposite polarity to produce a gap therebetween by magnetic repulsion. In a further embodiment, Fig. 4 (not shown), the guide means comprises an auxiliary endless belt (35) passing around end rollers (36) and having a plurality of rollers (37) to curve that surface thereof in contact with the conveyer (10). The rollers (37) may be replaced by a fixed guide plate (40), Fig. 6 (not shown), with an anti-friction coating, an air cushion or magnetic repulsion similar to the plate (30). In a still further embodiment, Fig. 8 (not shown) the guide means is in the form of an endless roller chain (45) with a fixed guide (47) bearing on the rollers to create the desired curvature. The links of the chain 45 may have brackets (49), Fig. 9 (not shown), to increase the area of contact between the chain and the conveyer or may carry slats (50).
Patent GB-1332294-A (GB)
Title: Nuclear reactors
IPC: G21C5/08
Filed: 1969-10-20
Abstract: 1332294 Moderator structures NUCLEAR POWER GROUP Ltd 6 Oct 1970 [20 Oct 1969] 51304/69 Heading G6C A reactor core comprises an assembly of graphite blocks arranged vertically in spaced columns with the individual blocks of a column maintained in vertical alignment, and a layer of spacer blocks on top of the core each axially located over a column and having a plurality of wedges loosely retained on the outer face of the spacer blocks and adapted to be laterally displaced to engage the spacer blocks of adjacent columns, the wedges being disposed in at least one ring around each spacer block. As shown in Fig. 5, a spacer block 10 has a single ring of wedges 11 which contact at their lower ends a wedge-shaped surface 12 of the uppermost block 13 of the corresponding moderator column. The spacer block 10 has a flange 10a the underside wedge surface of which is adapted to co-act with the wedges 11. Pins 14 serve to locate the wedges relative to the spacer block 10. A shouldered bolt 15 ties the spacer block 10 to the uppermost block 13 of the column. On the l.h.s. the spacer block 10 is shown in its operating position in the core with the wedges 11 displaced laterally under the weight of the block 10. On the r.h.s. the spacer block 10 is shown in a lifted position with the wedges 11 retracted. The spacer blocks are raised or lowered by means of a grab (not shown). In the operating position the block 10 is supported on a metal ring 16 interposed between it and the uppermost block 13 of the column. The dimensions and material of the ring are such that the thermal expansion or contraction of the ring in the direction of the axis of the column is substantially the same as that of the wedges 11 in the same direction. By this means the wedges are not forced outwards by general thermal growth of the assembly. The spacer blocks may form the upper layer of the core, be made of steel and act as a radiation shield for the reactor core. In an alternative embodiment (Figs. 1 and 2, not shown), the wedges are located in a plurality of vertically spaced rings, each pair of adjacent rings being separated by a ring-shaped collar having wedge surfaces which engage the wedges, the collars being capable of limited movement in a vertical direction. The wedges are actuated by a weight supported by the wedge and collar assembly. The wedges engage laterally displaceable members which contact the corresponding members or the side faces of adjacent spacer blocks. The term "wedge" may include elements such as balls and rollers.
Patent GB-1332458-A (GB)
Title: Mixing apparatus
IPC: B01F29/83
Filed: 1969-12-12
Abstract: 1332458 Rotary container mixers CASCO MIXING MACHINES Ltd 6 Oct 1970 [12 Dec 1969] 60791/69 Heading B1C A mixer has a tiltable and detachable rotatable drum 3 with a stirrer 38 depending thereinto which is pivotable about a rod 36 and slidable on a horizontal guide 37, and is shaped as at 49, 50 to deflect part of the material between the stirrer and the container well; in operation it may be self-adjusting. There may be a shield 39 for the mechanism and a deflector (51, not shown) fixed to the top of the stirrer to prevent material rising in the drum. In a modification (Fig. 4, not shown) the stirrer may have downwardly deflecting plates (52) and apertured baffles (53). The whole weight of the drum is carried in the shaft 18.
Patent GB-1350575-A (GB)
Title: Firearm cartridge device
IPC: F41A33/02
Filed: 1970-04-08
Abstract: 1350575 Teaching warfare; practice cartridges P S CROWELL 19 April 1971 [8 April 1970] 16565/70 Headings F3C and F3A A cartridge device, for a firearm, comprises a casing 1, Fig. 1, which fits into the breech of the firearm (not shown) and which has batteries 2 housed therein, a metal stud 3 which is supported in an insulating block 10 and which is located at one end of the device so as to be struck by the firing pin of the firearm, a light bulb 5 which is located at the other end of the device, and an optical means for directing a beam of light down the barrel of the firearm. One of the batteries 2 abuts a spring 9 which is mounted on the stud 3, a nut 11 being mounted on the stud to prevent ejection of the screw by said spring. The block 10 is recessed at 16 so as to permit limited axial movement of the stud 3. The other battery connects, by means of a wire 7 to the light bulb 5. The wire 7 is passed through an insulating covering 8 which is mounted in a metallic plug 4 screwed into the casing 1. The optical means comprises a member 12, Fig. 4, having a focusing lens 14 mounted therein by means of pins 15 and having portions 13, Fig. 5, formed so as to effect gripping when the member 12 is positioned on the plug 4. The electrical circuit is closed when the firing pin of the firearm engages the screw 3, the plug 4 serving as a connection between the batteries and the firearm.
Patent GB-1352656-A (GB)
Title: Semiconductor device
Filed: 1972-08-10
Abstract: 1352656 Gunn diode circuits STANDARD TELEPHONES & CABLES Ltd 10 Aug 1972 37284/72 Heading H3T [Also in Division H1] A mounting for a Gunn diode or semi-conductor laser 1 gives two sided cooling for the element. The mounting shown is clamped into a massive, optionally-finned, split copper cooling block (Fig. 2, not shown). The mounting has a casing 5 within which the element is secured, either directly on the base 2 or, as shown, on a pedestal 3 which may be of right cylindrical form or frustoconical. The other electrode of the element 1 is contacted by a gold-plated copper rod, which is initially a sliding fit within a twopart collar consisting of a gold-plated copper sleeve 8 press-fitted into a thin aluminium sleeve 7 which is then anodized on its outer surface 9. The collar is itself shrunk into the casing. In assembly the element is placed between solder preforms (not shown), a solder ring is placed in groove 11, a weight is placed on rod 10 and the assembly is furnace soldered in a hydrogen atmosphere. The anodized collar acts as an inductor. A coaxial connection (13) attached to the copper cooling block (not shown) allows supply of an input bias and output, if optical, is taken directly via aperture 4 or, if microwave, is taken via a coaxial connector having a rod (14) extending through a PTFE collar (15) to meet pedestal 3. Other connection systems, such as triplate microstrip or waveguide, may be used. When the device is operated in the LSA relaxation mode the mounting provides the necessary lumped circuit combination of parallel inductance and parallel resistance to operate in the 3-6GHz range.