baber/WOPTO huggingface dataset:
Patent GB-1133990-A (GB)
Title: Improved phenolic moulding compositions
IPC: C08L23/12
Filed: 1965-12-13
Abstract: 1,133,990. Phenolic composition. UNION CARBIDE CORP. 13 Dec., 1965 [14 Dec., 1964], No. 52863/65. Headings C3P and C3R. A phenolic moulding composition comprises in intimate admixture a curable phenolic resin and a non-acidic copolymer of ethylene and at least one copolymerizable monomer which contains the group The composition preferably contains 0À15 to 67 parts by weight of the copolymer per 100 parts of phenolic resin. Curable resole or novolak phenolic resins may be used, in the case of the curable novolak resins a curing agent must also be added. Novolak resins are preferred especially those prepared from formaldehyde and a mixture of phenol with up to 50% of an alkyl phenol which contains from 4 to 12 carbon atoms in the alkyl group. Suitable non-acidic monomers which may be copolymerized with ethylene are vinyl aryls, vinyl and vinylidene halides, vinyl esters, the alkyl esters, amides and nitriles of acrylic and alpha-alkyl acrylic acids, alkyl esters of maleic and fumaric acid, vinyl alkyl ethers and ketones, vinyl pyridine, N- vinyl carbazole, N-vinyl pyrrolidone, ethyl methylene malonate, propylene and isobutylene. Lubricants, cure accelerators, fillers, pigments and abrasives may also be added to the composition. The copolymer may be introduced to the composition by at least three means: (a) by addition to the raw mix prior to compounding, (b) directly into the still during the manufacture of the phenolic resin or (c) in the form of a master batch whereby it is compounded with the phenolic resin in an appropriate ratio and then added to the raw mix as required.
Patent GB-1280332-A (GB)
Title: Manufacture of laminated glass sheets
IPC: B32B17/06
Filed: 1969-11-03
Abstract: 1280332 Multiple-ply sheet glass CORNING GLASS WORKS 3 Nov 1969 [4 Nov 1968] 53727/69 Heading C1M Multiple-ply sheet glass is obtained from separate sources 14 and 16 of molten glass before contacting the atmosphere, a core glass being supplied from container 14 and skin glass from chamber 16, the core glass being supplied through delivery slot 30, into which slot 30 is also supplied skin glass through metering means 28 so as to form an outer ply on the core glass before the multiple-ply sheet emanates from the delivery passage. The apparatus may be formed of Pt or Pt/Rh alloy, and the separate chambers are electrically heated to maintain suitable fluidities. Any number of plies may be formed, one apparatus being for a seven-ply glass sheet. The composite glass sheet may be rolled for thinner glass.
Patent GB-1360757-A (GB)
Title: Teaching machine
IPC: G09B7/06
Filed: 1972-11-22
Abstract: 1360757 Educational appliances E D P Ltd 22 Nov 1972 53974/72 Heading G5G A teaching machine comprises an inclined platen 16 adapted to receive a question and answer sheet 22 and mounted on a base 12 which may also include a tape recorder 14. A ruler 24, mounted for sliding movement up and down over the platen, is provided with a cursor 26 which has a position indicator 28, an interrogation switch (30), Fig. 2 (not shown), a green bulb (32) to indicate a correct answer and a red bulb (34) to indicate a wrong answer. In use, the student moves the ruler 24 and cursor 26 to position the indicator 28 over what he considers to be the correct answer to a question on sheet 22. He then operates the switch (30), when the bulb (32) is energized if his selection is correct or the bulb (34) otherwise. Suitable electric circuits are described with reference to Figs. 8 and 9 (not shown) and these are arranged so that as the cursor is moved from side to side the connections are alternately reversed from column to column, i.e. if operation of switch (30) causes the bulb (32) to light up when the indicator 28 is positioned over an answer in one column, then bulb (34) will light up on operation of switch (30) if the cursor is moved to the next column. Similarly, the connections are reversed when the ruler is moved from line to line, thus enabling an "answer pattern" to be produced not readily discoverable by the student.
Patent GB-1164148-A (GB)
Title: Improvements in or relating to Grinding and Milling of Lenses and the like
IPC: B24B9/14
Filed: 1966-12-02
Abstract: 1,164,148. Grinding; milling. GIUSEPPE RATTI INDUSTRIA OTTICA, S.p.A. 2 Dec., 1966 [31 Dec., 1965], No. 53978/66. Headings B3D and B3K. A machine for grinding or milling a lens or piece of material 22 in conformity with a predetermined shape 24 comprises one or more grinding wheels or cutters mounted on the revolving spindle of a motor-driven wheel or cutter holder, and a swingable arm 2 provided with one or more revolving shafts 8, 9 on which the lens or piece is mounted, means being provided for permitting centring and angular positioning of the lens to be accomplished directly on the machine during the operation of mounting and fastening of the lens on the machine. The arm 2 is pivotably mounted on a bedplate 1 and has extensions 7 rotatably supporting the shafts 8, 9 which are driven by chain drives 12, 12<SP>1</SP> from a shaft 3 rotatable by a handle 25 or automatic means. Shaft 9 is axially fixed and has a rubber support 20 for receiving the lens or piece 22, and shaft 8 is keyed to sprocket 11 and is axially movable by displacement of a sleeve 15 having a rod 16 extending through a helical slot 14 in a part 13 of arm 2. The upper end of shaft 8 carries a cylinder 23 having pins for locating the cam 24, and the lower end has a block 21 for engaging the lens and those slidable pins 17, 18, 19 which co-operate with markings on the lens or piece to permit it to be accurately positioned before being gripped between the support 20 and block 21. During lowering of the shaft 8 by handle 16, the lens is positioned so that pin 17 engages the optical centre of the lens and, in the case of an astigmatic lens, pins 18, 19 engage marks indicating the cylinder noses. On further lowering of shaft 8, the block 21 presses the lens against the support while the shafts and lens are rotated and the lens is ground to the shape determined by cam 24 which engages a fixed part.
Patent GB-1344116-A (GB)
Title: Electromechanical vibration pick-ups
IPC: H04R23/00
Filed: 1971-11-22
Abstract: 1344116 Pickups SESCOSEM SOC EUROPEENNE DE SEMICONDUCTEURS ET DE MICROELECTRONIQUES 22 Nov 1971 [24 Nov 1970] 54109/71 Heading H4S [Also in Division H1] A pick-up comprises a flexible semiconductor substrate having formed in it a FET. Bending of the substrate produces variation in the resistivity of the substrate. A stereophonic pickup has two semiconductor substrates 13, 15 (Fig. 4) at right angles and joined to one another by a rigid ring 14. A rigid nose 12, e.g. of aluminium, carries a stylus 2. A rigid sleeve 16 is secured to a damping block 17. The substrates 13, 15 have low rigidity perpendicular to their major surfaces. Metallized output terminals 31, 32, 51, 52 of the substrates 13, 15 are connected by wires to metallized areas 35, 36, 55 (56, not shown) on the sleeve 16. The substrates 13, 15 have M.O.S. FETs formed in them; in each the gate is connected to the source and the drain-source currents flow parallel to their major faces and parallel to the pickup axis. In an alternative construction (Fig. 5) members 12, 14, 16 are machined to provide lands 18, 19, 20 and 21. These lands are gold coated, as are the ends of the substrates, which are of silicon. The substrates 13, 15 are joined to the members 12, 14, 16, a eutectic gold-silicon alloy being formed. In another embodiment (Fig. 6, not shown) the members (12, 14, 16) are recessed to receive the ends of the substrates (13, 15). The substrates 13, 15 may also have integrally formed amplifiers.
Patent GB-1439546-A (GB)
Title: Mining shield supporter
IPC: E21D19/04
Filed: 1973-11-23
Abstract: 1439546 Mining shields TAIHEIYO COAL MINING CO Ltd 23 Nov 1973 [18 Dec 1972] 54568/73 Heading E1F A mining shield, support 1 comprises a central arcuate member 2, lateral arcuate members 3, 3' pivotally connected to opposite ends of the central member, a sliding block 5, 5' slidably mounted within each lateral member, jacks 11, 11' pivotally connected between the central member and the blocks, and extensible props 7, 7' pivotally mounted on the lower ends of the sliding blocks. The support is collapsed for transportation (Fig. 2 not shown), by contracting the jacks and extensible props. Leaf springs 39, 39' act between the sliding blocks and props 7, 7' to bias the props laterally outwardly. A wheeled carrier 40 for the support forms the subject matter of Specification 1439545.
Patent GB-1118139-A (GB)
Title: Improvements in or relating to the ion-exchange treatment of glass surfaces
IPC: C03C21/00
Filed: 1965-12-23
Abstract: <PICT:1118139/C1/1> In ion-exchange strengthening treatment of a surface of a glass article, the article, such as a sheet 5 is inserted in a molten salt bath 3 so that, with solidified salt 8 formed by cooling the salt, the molten salt is divided into two portions which are maintained at different electric potentials.  A stainless steel container 2 for the salt bath 3 has a contact 9 so that the container acts as one electrode, the other being provided by a perforated nickel plate 7 and connecting rod 7a placed on the glass sheet 5 to contact it with edges only.  The sheet 5 is supported on a ring support 4 and the solidified salt 8 is produced by a ring 6 rising above the top of salt bath 3 and being of high heat capacity material such as stainless steel or brass. In an alternative construction, two suspended glass sheets are pressed either side of a U-tube which is cooled by the passage of air, and the plate 7 is replaced by a suspended plate between the two glass sheets.  The molten salt is preferably potassium nitrate, for use with soda-lime glass, maintained at about 400 DEG  C.in a furnace I and the glass sheet 5 is preheated to about 380 DEG  C. The ring 6 is cooled to about -20 DEG  C. to give a coating of the salt 8.  The current is passed for about 100 seconds, causing K ions to replace Na ions, the K ions entering on the anode side and the Na ions leaving on the cathode side.  To obtain a layer of compressive stress on both sides of the glass sheet 5, the current may be passed one way for 90 seconds and the other way for 10 seconds.
Patent GB-1493576-A (GB)
Title: Interferometric shaft angle or shaft torque encoder
IPC: G01B9/02
Filed: 1973-11-27
Abstract: 1493576 Measuring angular displacement photo-electrically HAWKER SIDDELEY DYNAMICS Ltd 18 Nov 1974 [27 Nov 1973 4 March 1974 7 March 1974] 54872/73 9615/74 and 10205/74 Heading G1A Angular displacement measuring apparatus comprises optical means for converting an angular displacement into a difference between two path lengths, and interferrometric means for measuring the difference and including a beam splitter providing two differently-directed coplanar beams to pass through the optical means along separate paths, the angular deflection of the optical means being in the common plane of the two beams. A beam from a mono-chromatic source 1 Fig. 2, is split by a half-mirror 2 into divergent beams 3, 4 which pass through a glass slab 5 rotatable about an axis inclined to the plane of the beams 3, 4, and are retroreflected by respective mirrors 6, 7 and recombined at 2 into a beam 9. Rotation of the slab 5 varies the difference between the path lengths 3 and 4 whereby a pattern of interference fringes sweeps across a photo-cell 8 in the path of the beam 9. As illustrated, the slab 9 is mounted at an angle α to the end of a shaft 11 so that its normal axis at the point of attachment nutates about the shaft axis as the shaft rotates. A zero reference angle may be established by light from a polychromatic source 14 blended with that from the source 1. Such light will excite a maximum response in the detector 8 when the paths 3 and 4 are symmetrical, but will not produce well-defined ambiguous variations in intensity at other angular positions. Either or both of sources 1 and 14 may be modulated to enable the detector 8 to distinguish between them. A plurality of detectors may be arranged Fig. 3 (not shown) to provide signals having phase separation representing the sense of the displacement. If the detectors (17, 18) cannot be separated by sufficiently small spacing, further beam-splitting means (16) may be used. In another embodiment, Fig. 5, a beam splitter 2 comprising rhomboidal prisms 21, 22 causes the beams 3, 4 to converge on an aperture 28 of an annular mirror 27 which, with an opposing mirror 29, constitutes a rotatable assembly mountable at an angle to the axis XX of a shaft (not shown). The rhomboidal prisms 21, 22 may also replace the half-mirror beam-splitter 2 of the first embodiment, so as to cause the beams 3, 4 to converge on a common region of the glass slab (5), Fig. 4 (not shown). The apparatus may be used to measure torque, the displacement-converting element and the remainder of the apparatus being mounted on respective zones spaced apart along a shaft undergoing torsion.
Patent GB-1102328-A (GB)
Title: Frit dispensing device
IPC: H01J5/24
Filed: 1965-12-28
Abstract: <PICT:1102328/C1/1> In the manufacture of cathode-ray tubes having separable funnel and face panel portions, a device for applying a bead 17 to the sealing edge 19 of the funnel 21 comprises a support 27 for the funnel 21 mounted for rotation on a turntable 35 rotated by belt 37 from electric motor 32, a frit dispensing means 15 mounted to hold the orifice 33 in predetermined relation to the sealing edge 19, a cam follower 47 fixed to the dispensing means and arranged to contact the funnel adjacent to the sealing edge, either inside as shown or outside, so as to guide the dispensing means 15 along the sealing edge 19 and means 91 for controlling the speed of the motor 32 so as to provide a substantially uniform rate of movement of the edge 19 relative to the orifice 33 of the frit dispensing means 15. The frit dispensing means 15, cam follower 47 and speed control means 91 are mounted on a support table 71 which can be raised or lowered by the piston-rod 70 of an air cylinder 41 to bring the orifice 33 out of or into the operative level relative to the sealing edge 19. The frit dispenser 15 and cam follower 47 are also mounted for horizontal reciprocating movement through an intermediate support 38 sliding on guide rods 53, fixed to table 71, by means of members 55. A weight 45 holds the support 38 so that in operative position the cam follower 47 is positively held against the surface of the funnel 21.  An air cylinder 43 presses with its piston 44 against a stop plate 65 on the support 38 to move the support 38 so that the orifice 33 is directly over the sealing edge 19, the table 71 then being lowered so that the orifice 33 is in the dot-dash position shown and the cam follower 47 engages the inner edge of the funnel. When the funnel is of non-circular shape, the follower 47, pulled by weight 45, moves in and out therewith, thus moving the support 38. This movement is transmitted to the speed control means 91, such as a rheostat, and thence to the motor 32, by a friction tyre 97 on a wheel 95 on the shaft of the rheostat which engages a friction plate 101 on the support 38.  The support 27 for the funnel 21 has a removable cap 73, which has a seating portion 25 to fit the particular shape of the yoke area 23 of the funnel, held by cap screws 79 in support legs 81, spacers 83 being inserted as necessary to bring the edge 19 to the required spacing from the orifice 33 in its operative position. Clamps 85, 87 hold the neck 24 of the funnel and are adjusted by knobs 88 to align the funnel 21 correctly.
Patent GB-1183420-A (GB)
Title: Circulator for Electromagnetic Energy
IPC: H01P1/387
Filed: 1968-11-20
Abstract: 1,183,420. Circulators. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 20 Nov., 1968 [23 Nov., 1967], No. 55101/68. Heading H1W. In order to prevent operation in spurious modes the ports of a circulator are subdivided into pairs of sub-ports which are fed in appropriate phase. The invention is applied to a conventional 3-port strip-line circulator having a central conductive disc 3 sandwiched between ferrite discs and outer conductors (not shown). The circulator shown is intended for operation in a mode of oscillation having periodicity n = 1, i.e. the ferrite elements support a standing wave consisting of a single sinusoid such that if the decoupled port, e.g. port 6, is situated at a node or voltage minimum, the input and output ports 4, 5 are situated near antinodes or voltage maxima. In order to suppress modes for which n = 2, 3 &c., the ports 4, 5, 6 are divided into two sub-ports, e.g. 4a, 4b, which are fed in such relative phase that the standing waves generated by the sub-ports cancel each other. Thus, if the sub-ports are fed in phase (as shown) an angular spacing of α = 90 degrees ensures cancellation of the mode of periodicity n = 2. If the sub-ports are fed in anti-phase, a spacing of α = 180 degrees produces the same result. In general, to obtain suppression of n-fold periodicity, the spacing α of the subports must be such that nα is an odd multiple of # when the sub-ports are fed in phase and an even multiple of # when they are fed in antiphase. The circulator may be constructed to operate in one of the higher-order modes with suppression of the fundamental.
Patent GB-1409743-A (GB)
Title: Aircraft instrumentation systems
IPC: G02B27/00
Filed: 1972-11-30
Abstract: 1409743 Head-up display DEFENCE SECRETARY OF STATE FOR 28 Nov 1973 [30 Nov 1972] 55274/72 Heading G2J A C.R.T. is visible to the pilot through a headup combiner 5 or directly. To this end mirror 7 may be movable out of the way or alternatively be movable into a position in which it is transmissive. By using a frequency discriminating filter at 7 two simultaneous displays, each of a different colour may be printed, one direct and one through the combiner 5.
Patent GB-1482482-A (GB)
Title: Seat track shield
IPC: B60N2/07
Filed: 1974-12-21
Abstract: 1482482 Sliding seats FORD MOTOR CO Ltd 21 Dec 1974 55335/74 Heading A4J A lower slide 13 of a vehicle seat is bolted to the vehicle floor and has fastened thereto at the rear end one end of a flexible strip 15 the other end of which is secured either (a) to the rear end of the upper slide, 12 Fig. I (not shown), or (b) to the seat adjacent the rear end of the upper slide. In the fully forward position, as shown in Fig. 3, the strip 15 obscures the end of the lower slide, but "rolls" away as the seat moves to the rear. The strip 15 may have transverse ribs to allow said rolling without transverse distortion. A spring reinforcement may help to control the rolling action. It is stated that the heat generated by catalytic exhaust converters may cause the lower seat slides to become hot by conduction through bolts 14, and the strip 15 is therefore preferably heatresistant and heat insulating. It may be of plastics.
Patent GB-1244210-A (GB)
Title: Method of making a tread plate
Inventor: KUHNS ROBERT CHARLES
IPC: B23K9/04
Filed: 1968-11-22
Abstract: 1,244,210. Gangways. KELLEY CO. Inc. 22 Nov., 1968 [31 Jan., 1968], No. 55615/68. Heading B7J. [Also in Divisions B3 and E1] An anti-slip surface of a treadplate for a ramp, walk-way, bridge surface, catwalk, or ship decking or stair treads comprises a series of rough irregular weld beads 5 which contain numerous pits, craters, protruberances, bubbles, oxide inclusions and weld spatter. The weld beads (Division B3) may be continuous or interrupted and may be disposed haphazardly or in cross-hatched, diagonal or longitudinally parallel patterns. Additional pits, inclusions &c. are exposed as wear proceeds. As shown, in a dock-board ramp which is raisable from a storage recess into an operative position, the weld beads are spaced 1 to 2 inches apart so that more than one bead is contacted by a vehicle (e.g. fork lift truck) tyre.
Patent GB-1141499-A (GB)
Title: Piano
IPC: G10C3/04
Filed: 1966-12-15
Abstract: 1,141,499. Pianofortes. NIPPON GAKKI SEIZO K.K. 15 Dec., 1966 [21 Dec., 1965; 27 Dec., 1965; 29 Dec., 1965; 15 Feb., 1966; 11 Oct., 1966], No. 56150/66. Heading G5J. In a sounding board assembly 11 which consists of longitudinal board elements preferably of spruce or maple 11b glued together, at least one bridge 14 and ribs 13, the rigidity of the peripheral portion is reduced. The reduction may be effected by decreasing the thickness of the board and ribs at 11a and 13a or there may be a peripheral groove (15) (Fig. 7, not shown) in the sounding board. The bridge is located so that it is substantially equidistant from the areas of reduced rigidity on either side of it-at least in the low and intermediate tone regions of the sounding board. The wood of the board elements of the central portion of the sounding board may be denser than that of the other board elements made of the same wood. Alternatively, different and denser wood may be used in the central portion. The sounding board is supported at its periphery by a frame (22) (Fig. 13, not shown) which may have a strut (20) to provide additional support. The frame may be drilled with holes (23) (Figs. 13, 14, 15, 16, not shown) where the ribs are supported to reduce its rigidity.
Patent GB-1277864-A (GB)
Title: Production of glycerol acetates
Inventor: VOGT WILHELM
IPC: C07C/
Filed: 1970-11-26
Abstract: 1277864 Glycerol acetates KNAPSACK AG 26 Nov 1970 [1 Dec 1969] 56228/70 Heading C2C Glycerol di- and triacetates are prepared by reacting allyl acetate, acetic acid and molecular oxygen at elevated temperature (80-250 C.) in the liquid phase under a pressure from 1 to 200 atmospheres in the absence of catalysts. The reaction may be intermittent in an autoclave or continuous with recycling followed by distillation to separate the di- and tri-esters.
Patent GB-1365086-A (GB)
Title: Composite heavy duty machine element and method of making the sa me
IPC: B22F7/06
Filed: 1971-12-06
Abstract: 1365086 Sintered composite annular metallic bodies FEDERAL-MOGUL CORP 6 Dec 1971 [4 Dec 1970] 56587/71 Heading C7D [Also in Division F2] A composite machine element has an annular working member consisting of a metal or alloy of high mechanical strength supported by an annular mounting member consisting of a metal or alloy of relatively lower strength, the two members having been produced and joined together by compacting and sintering the different powdered materials. The high strength material may be an iron-base, manganese-molybdenum alloy or iron-base, manganese-molybdenumnickel alloy and the lower strength material may be iron or low-carbon steel. A bevel ring gear may be formed by pressing and sintering together superimposed layers 84 of powder of high strength material and 82 of low strength material, Fig.4, and then shaping the annulus in a forming die, Fig.6, using a tubular punch 92 having the required ring tooth formation 94. In the production of a spur-gear inner and outer annular layers of low-strength and high-strength material powders are formed in a press with a tubular divider between them, the divider being removed prior to pressing and sintering Figs.9-15 (not shown). The inner and outer races of a ball bearing assembly may be similarly formed Figs.16-18 (not shown).