baber/WOPTO huggingface dataset:
Patent GB-1074478-A (GB)
Title: Signal digitizing apparatus
IPC: H03M1/00
Filed: 1964-10-23
Abstract: 1,074,478. Analogue-to-digital converters. HEWLETT-PACKARD CO. Oct. 23, 1964 [Dec. 3, 1963], No. 43440/64. Heading G4H, In a digitizer, an input signal is integrated during a first period, during which feedback means responsive to a predetermined integrator output value decrements said output, the output being further decremented during a second period. A switch (20) is closed to apply the analogue input (18) to an integrator comprising a capacitor (11) and amplifier (9) for a predetermined period (equal to <SP>1</SP>/ 60  sec. to eliminate power line hum). During this period, whenever the capacitor voltage exceeds a predetermined value, a first detector (13) triggers a first pulse generator (15) and also feeds a pulse to the hundreds order of a counter (33). The generator (15) produces a standard pulse which reduces the charge on the capacitor (11). After the predetermined period has ended the switch (20) is opened and pulses from a source (37) are simultaneously fed to the units order of the counter (33), and to a second generator (27) which produces standard pulses (of area onehundredth those of the first generator) to reduce the charge on the capacitor (11). Feeding of pulses from the source (37) is terminated when a second detector (39) indicates that the capacitor voltage is zero. Modifications mentioned are: (a) reducing capacitor charge by momentary short-circuiting, (b) using D.C. feedback instead of pulses from the second generator (27), (c) one pulse generator and differing resistors replace the two generators (15, 27).
Patent GB-1278815-A (GB)
Title: A machine comprising a table, for binding and tying up packages or bundles
IPC: B65B13/26
Filed: 1969-09-02
Abstract: 1278815 Binding machine PETER BORN AG 2 Sept 1969 [10 Sept 1968] 43459/69 Heading B8C A binding machine of type having a reciprocating guide arm 2 provided with a hole 3 through which string S from a supply passes, a knotter K and a table 1 with an opening for the guide arm, includes two string gripping members 20a, 21a, the gripping member 21a having a knife edge 32. Movement of the gripping members 20a, 21a is controlled by cams 26 and 27 so that the free end (S o  Fig. 1) of the string is released by the gripping member 20a prior to the cutting of the string extending between the knot and the supply by the knife edge 32. Hooked edges of hook-shaped recesses (30, Fig. 3), 31 provided in the gripping members 20a 21a in conjunction with abutments 9a, 9b serve to clamp portions of the string when the gripping members 20a, 21a are pivoted outwardly against the action of springs 24, 25. The gripping members 20a, 21a and the abutments 9a, 9b are pivoted as a unit about a common axis by pins 16 so that they are displaceable towards but biased by a spring 17 away from the knotter K. Operation of the guide arm 2 and the knotter K is conventional.
Patent GB-1196014-A (GB)
Title: Process for the Production of a Controllable Semiconductor Element with a pnpn Structure with Short-Circuits in the Emitter Zone.
Inventor: EUGSTER EDOUARD
IPC: H01L21/3063
Filed: 1967-09-25
Abstract: 1,196,014. Etching. BROWN, BOVERI & CO. Ltd. 25 Sept., 1967 [27 Sept., 1966], No. 43544/67. Heading B6J. [Also in Division H1] The triggering characteristics of a PNPN device which is to have a shorted emitter are continuously tested while the emitter layer is subjected to a selective etching treatment in an electrically conductive etchant. As shown, a PNPN Si wafer 8 is submerged in a conductive etchant 11 comprising HNO 3 , CH 3 COOH and HF in vol. proportions of 4: 2: 1.5 while voltage pulses from a source 15 are supplied between the device anode 13 and a gold wire measuring electrode 5 which is compression bonded to the emitter layer of the wafer 8 beneath an insulating mask and which is uncovered so as to contact the etchant 11. The pulses from the source 15 have an amplitude smaller than the triggering voltage for the device, but the voltage-rise rate is sufficient to produce triggering as long as the emitter junction is not shorted. When the etching process is sufficiently advanced for shorting to occur the pulses fail to trigger the device, and a control means 16, 18, 19 operates a valve which directs a jet of water on to the wafer 8 to rinse away the etchant 11. A layer of Ni is then vapour deposited over the etched surface and sintered. In an alternative application a desired triggering current is achieved by a similar procedure. The zones of the wafer 8 may be formed entirely by diffusion, or the emitter layer may be produced by alloying an Au foil containing Sb to the wafer. In this case the Au foil comprises the etching mask, being itself etched with aqua regia. The measuring electrode 5 comprises a spring in contact with the foil.
Patent GB-1530469-A (GB)
Title: Separating gas from a gassy liquid
IPC: G01N1/14
Filed: 1975-10-24
Abstract: 1530469 Degassing liquid; sampling device W DOCKHORN 24 Oct 1975 [26 Oct 1974] 43712/75 Headings B1D and B1M [Also in Division B8] An apparatus for separating gas from a gassy liquid comprises a cylinder I with a reciprocating piston 7 formed with one or more transfer passages 47, 48 which are closable by valves 19, 50, the apparatus being used to withdraw liquid, e.g. from a pressurized pipeline, through an inlet 34 by retraction of the piston. The inlet has a spring-biased 21 closed valve 6 which is opened during the initial part of the piston retraction by engagement between the piston and a spring 20. When the piston separates from the spring 20 the valve 6 closes and a liquid sample is trapped in the lower chamber of the cylinder. The further stroke of the piston causes the gas in the liquid to separate out and flow through the passageways 47, 48 in the piston during the downward stroke of the piston which returns the liquid to the pipeline. The valves 19, 50 of the piston are prevented from sticking by pins 22 slidable in passages 48. The gas or liquid removed from the liquid sample is removed from the upper chamber of the cylinder by argon gas. Filter disc 4 has by-pass apertures 36.
Patent GB-1140648-A (GB)
Title: Collision avoidance apparatus
IPC: G01S13/933
Filed: 1967-09-26
Abstract: 1,140,648. Radio navigation. T. M. RUNGE. 26 Sept., 1967, No. 43858/67. Heading H4D. The specification describes a collision avoidance system for a plurality of aircraft and comprises, on each aircraft, an omni-directional pulse transmitter and a plurality of direction receiving aerials 24a ... 24h, each covering a respective quadrant of space and passing any pulse signals received from other aircraft in said quadrants to respective receivers 34a ... 34h, comprising an RF amplifier 36, disabled during the transmission of the aircrafts own pulse, and a detector 38. The detected signals are fed to logic means 40, which selects that input which has the largest amplitude and converts it to a pulse signal having a repetition frequency proportional to said amplitude and to the inverse of the corresponding "nearest" aircrafts range, said signal is then fed to a respective one of eight outputs 41a ... 41h. An indicator 42, Fig. 4, comprises a transparent sphere divided up into eight sections, each corresponding to a particular one of the quadrants of space covered by the aerials 24a . . . 24h, and provided with a lamp 43 ... 50 connected to a respective one of said outputs 41a . . . 41h. Thus the presence of a near aircraft will cause the lamp in the corresponding section, to flash with a frequency indicating its range. Only four, forward facing receiving aerials may be provided, whence the indicator becomes a hemisphere.
Patent GB-882629-A (GB)
Title: Improvements in pawl and ratchet mechanisms, particularly for pneumatic percussion tools
IPC: E21B6/06
Filed: 1959-12-28
Abstract: 882,629. Percussive tools. ATLAS COPCO A.B. Dec. 28, 1959 [Dec. 30, 1958], No. 44030/59. Class 124. A ratchet and pawl mechanism for a percussive drill comprises a first rotatable member, a second stationary member, a plurality of outwardly opening detents on the first member, one or more pawls mounted on the second member for movement into and out of engagement with the detents, and tubular, rubber-like, biasing members in recesses in the second member with the axles parallel to the axis of rotation of the first member to urge the pawls into engagement with the detents. As shown, a piston extension 11 of a percussive drill has grooves which engage ridges 18 on a collar 17 provided with detents 19 which may be engaged by pawls 20 mounted on a stationary member 8. The pawls are urged towards the detents by resilient, tubular members 21 which have their axes parallel to the axis of rotation of the collar 17. The compression and expansion of the tubular members 21 produce a movement of air which assists in cooling the parts of the tool.
Patent GB-1461588-A (GB)
Title: Adjustable 'urniture support
IPC: A47B91/00
Filed: 1973-09-20
Abstract: 1461588 Adjustable leg supports for chairs and beds P LANGHAM 28 Nov 1974 [20 Sept 1973] 44094/73 Headings A4H A4J and A4U An adjustable furniture support comprises two adjustably inter-connected arms 1, 1' or 2, 2' contained in a generally horizontal plane, each arm having a generally vertical hollow support member 9 for receiving a plurality of removable blocks 10 and the lower end of a leg of a piece of furniture, wherein in use the height of said leg may be adjusted by the insertion of one or more blocks 10 in the support member 9. As shown, a support for a chair comprises two pairs of slotted arms 1, 1' and 2, 2' pivotally and slidably inter-connected by respective bolts 4, the two pairs of arms being slidably mounted on a slotted connecting member 7 by said bolts 4. In a modification, a support for one side of a bed comprises only one pair of said arms Figs. 3, 4 (not shown).
Patent GB-895799-A (GB)
Title: Internally-threaded glass helix
Inventor: EDEN SIDNEY JOSEPH
IPC: C03B23/06
Filed: 1960-12-23
Abstract: 895,799. Glass helix manufacture. MULLARD Ltd. Dec. 23, 1960, No. 44275/60. Class 56. [Also in Group XL (a)] An internally threaded glass helix for a travelling wave tube is formed by winding a threaddetermining metal wire helix on to a cylindrical mandrel, winding a helix of hot soft glass on to the mandrel over the wire helix so that the wire becomes partly embedded in the glass helix, cooling the assembly to harden the glass and separating the glass helix from the mandrel and the wire helix. Before removal from the mandrel, the cooled glass helix may be precision ground to define a cylindrical outer surface. As shown in Fig. 2, a helix 2 of metal wire is wound on a mandrel 1 with further wire helices 3, 4 between so that the surface of the mandrel is substantially covered. The wire helices 3, 4 may be replaced by a tape of metal. The mandrel 1 is then placed in a glass lathe and hot soft glass is wound on to the mandrel to give a helix 5 in which the wire 2 is partly embedded, the wires 3, 4 or the tape preventing the hot glass coming into contact with the mandrel 1. After cooling and grinding, if desired, the mandrel 1 is removed and the wires 2, 3, 4 and/or the tape are dissolved out by a suitable acid to give threads 6 on the inner surface of the glass helix 5. As shown in Fig. 4, a cylindrical mandrel 8 is provided with helical groove 9 in which the helical wire is positioned, the mandrel and wire being dissolved out together after formation of the glass helix 5. A plurality of thread-producing wires 2 may be used to give a multi-start thread. The wires 2, 3, 4 and tape are preferably made of tungsten or molybdenum or an alloy with substantial proportion of either or both metals. The mandrel 8 is preferably of a nickel-chromium alloy having a coefficient of thermal expansion substantially the same as that of the glass used in the helix. The helix may be used in a travelling wave tube to support a helical longitudinally-extending slow-wave structure.
Patent GB-1127132-A (GB)
Title: 1,2,3,4,5,6-hexahydro-2,6-methano-3-benzazocines and 1,2,3,4,5,6-hexahydro-2,6-methano-3-naphtha [2,1-f] azocines, and the preparations thereof
IPC: C07D221/22
Filed: 1965-10-19
Abstract: 1,127,132. Hexahydro - 2,6 - methano - 3- benzazocines and - 3 - naphth[2,1 - f]azocines. STERLING DRUG Inc. 19 Oct., 1965 [20 Oct., 1964], No. 44321/65. Headings C2A and C2C. 1,2,3,4,5,6 - Hexahydro - 3 - (Y) - 6 - (R<SP>1</SP>) - 11- (R<SP>2</SP>) - 2,6 - methane - 3 - benzazocines and - 3- Y - 6 - (R<SP>1</SP>) - 13 - (R<SP>2</SP>) - 2,6 - methano - 3 - naphth- [2,1-f]-azocines, wherein R<SP>1</SP> is 1-4C-alkyl, R<SP>2</SP> is H or 1-4C-alkyl and Y is cycloalkyl lower alkylene (lower = 1-4C), 2-carboxyethyl, tetrahydro - 2 - furylmethyl, 2 - (3 - indolyl) - ethyl, 3 - aminopropyl, 3 - (1 - azacycloheptyl)propyl, n-butyl carbamyl, nicotinoyl, 1-methylimidazol- 5-yl methyl, 2,2-dimethoxy ethyl, 3,3-dimethyl allyl or phenethyl, phenethyl being limited to the 3-naphth[2,1-f]azocine moiety, are prepared by reacting the corresponding 3-unsubstitutedbenzazocine or -naphth[2,1-f]azocine with an N- acylating agent providing the substituent Y when Y is nicotinoyl or n-butylearbamyl; with the halide or anhydride of an acid Y<SP>1</SP>-COOH (where Y<SP>1</SP> has one less C atom than Y) and treating the resulting amide product with a reducing agent to reduce the carbonyl group of the amide to CH 2 , or with an alkylating agent Y-An wherein Y is 1-methylimidazol-5-yl-methyl, 2,2-dimethoxyethyl or 3,3-dimethylallyl and An is the anion of a strong organic or inorganic acid. The bases form salts with organic and inorganic acids including ascorbic acid and penicillin. 1,2,3,4,5,6 - Hexahydro - 6(R<SP>1</SP>) - 13 - (R<SP>2</SP>) - 2,6- methano-3-naphth[2,1-f]azocines are prepared from 3-(R<SP>2</SP>)-4-(R<SP>1</SP>)-pyridine methiodide by reaction with 1-naphthylmethylmagnesium chloride to give N-methyl-2-( 1 -naphthylmethyl)-3- (R<SP>2</SP>)-4-(R<SP>1</SP>)-1,2-dihydro pyridine which is reduced to the tetra hydro pyridine and cyclized to the racemic cis and trans forms of 1,2,3,4,5,6- hexa - hydro - 3 - methyl - 6 - (R<SP>1</SP>) - 13 - (R<SP>2</SP>) - 2,6- methano-3-naphth[2,1-f]azocine; this is demethylated by reaction with cyanogen bromide to give the 3-cyano compound which is heated with HCl. The cis and trans forms may be separated and the racemic form resolved.
Patent GB-880936-A (GB)
Title: Elastic diaper
IPC: D03D15/56
Filed: 1959-12-31
Abstract: 880,936. Babies' napkins. KENDALL CO. Dec. 31, 1959 [Jan. 7, 1959], No. 44454/59. Drawings to Specification. Class 141 [Also in Group IX] A cotton fabric for babies' napkins is woven from soft yarns in one direction (preferably the warp) and crepe yarns in the other direction, the soft yarns being floated in a random pattern over two or three crepe yarns on one side of the fabric to hide the crepe yarns on that side. The fabric may have two plies joined together at the selvedges, with weftwise single-ply stripes at intervals, along which it may be cut by pinking to make napkins which do not need hemming.
Patent GB-1442888-A (GB)
Title: Apparatus for conveying flat articles
IPC: B65H7/12
Filed: 1974-10-15
Abstract: 1442888 Feeding sheets NCR CORP 15 Oct 1974 [26 Oct 1973] 44564/74 Heading B8R Letters are separated from a pile and fed on edge by a horizontal belt 26 and a vertical belt 27 to an operating station, passing between a reversely rotating cylindrical brush 37 and upper and lower fingers 51, and passing a stop pin 58, the members 37, 51, 58 being movable towards and away from the feed path under the control of solenoids, and the letters also passing foul photo-electric detectors 65, 69; 66, 72; 67, 73; 68, 74. Each letter is engaged by the brush and fingers and temporarily stopped by the pin 58. If two letters have been fed together, the brush will move the second one backwards. The solenoids are controlled by the detectors and by signals from an operator.
Patent GB-977476-A (GB)
Title: Synthetic ester lubricating oil composition
Filed: 1961-12-15
Abstract: A synthetic lubricant comprises 40 to 70 volume per cent of a tri ester <FORM:0977476/C4-C5/1> R being C1-8 alkyl and R1 C3-11 alkyl, and 60-30 volume per cent of a complex ester R1-OOCR2-COO-(R3-OOCR4COO)n-R5te R1, R5 being alkyl radicles of a C6-13 neoalcohol; R2, R4 C4-10 hydrocarbon radicles; and R3 a 1-3 alkenyl radicle with no p hydrogen and containing at least 5 carbon atoms, and n is an integer from 1 to 6.  Up to 40% by weight, relative to the complex ester, of a diester R1OOCH2COOR5 (R1, R2, R5 being as in the complex ester) may be present.  0.001 to 10 weight per cent each of calcium petroleum sulphonate; polymethacrylates; diphenylamines; phenothiazines; sorbitan monooleate; tri cresyl phosphate; sebacic acid; and polymers (exemplified) from either maleic anhydride or 2-N-vinyl pyrrolidone with unsaturated esters.
Patent GB-970964-A (GB)
Title: Polyester resins having good electrical insulation properties
IPC: C08G63/553
Filed: 1962-11-29
Abstract: Polyester resins having good electrical insulating properties are prepared by reacting at least one vegetable oil with a polyhydric alcohol, mixing the product obtained with at least one a ,b -unsaturated polycarboxylic acid and/or saturated polycarboxylic acid and subjecting the mixture to a polycondensation reaction to form an unsaturated alkyd resin, adding dicyclopentadiene prior to, during, or subsequently to the formation of the unsaturated alkyd resin, heating the mixture to form a cyclopentadiene unsaturated alkyd resin, mixing the latter with a compound containing a CH2=C< radical, adding a silicone resin and if desired a hardening catalyst and a hardening accelerator.  Examples of vegetable oils, mixture of which may be used, are drying oils and semi-drying oils e.g. safflower, soyabean, tung, perilla, linseed, sesame, cotton seed and rape seed oils. The usual accelerators, catalysts and inhibitors may be added. An electrical conductor may be insulated by coating the conductor with the polyester of the invention. In the examples: (1) safflower oil and glycerine are heated together, in the presence of calcium acetate and then maleic anhydride, phthalic anhydride, ethylene glycol, dicyclopentadiene and hydroquinone are added and the mixture is allowed to react in a CO2 atmosphere for one hour at 160 DEG C., three hours at 180 DEG C. and then the temperature is raised to 200 DEG C.  The liquid resin is then polymerized with styrene in the presence of a silicone resin. In other examples the unsaturated polyester is prepared from (a) safflower oil, glycerine, maleic anhydride, isophthalic acid, ethylene glycol and dicyclopentadiene; (b) soyabean oil, linseed oil, glycerine, dicyclopentadiene, maleic anhydride and phthalic anhydride; (c) cotton seed oil, soyabean oil, trimethylolpropane, propylene glycol, maleic anhydride, phthalic anhydride and dicyclopentadiene and (d) cotton seed oil, pentaerythritol, ethylene glycol, fumaric acid, phthalic anhydride and dicyclopentadiene.
Patent GB-1093413-A (GB)
Title: Separation of hydrocarbons
Inventor: KING RALPH WILLIAM
IPC: C07C7/00
Filed: 1964-11-06
Abstract: Isoprene is recovered from a C5 mixture containing cyclopentadiene by a fractional distillation in which liquid is removed from an intermediate point where the cyclopentadiene content is higher than the feed, subjecting it to conditions which dimerize the cyclopentadiene and returning it to an intermediate point of the distillation and recovering isoprene overhead. The feed may first be subjected to a predimerization treatment and distillation.  The withdrawn liquid is treated at 100-160 DEG  C. and 10-30 atmospheres for 10 minutes to 6 hours. The distillation column may contain 60-200 theoretical plates.
Patent GB-1004662-A (GB)
Title: Improved rubber compositions
IPC: C08K5/30
Filed: 1961-12-18
Abstract: A natural or synthetic rubber or rubber latex contains as an antioxidant an osazone of the formula <FORM:1004662/C3/1> wherein R1 and R2 are the same or different and are hydrogen or an alkyl, aryl, alkaryl, or aralkyl radical which may be unsubstituted or substituted by one or more hydroxyl, carboxyl, or amino radicals, any hydroxyl radical being in the free state or esterified or etherified, any carboxyl radical being in the free state or esterified, and any amino radical being in the free state or substituted by one or more alkyl groups; in which R3 and R5 are the same or different and are hydrogen or lower alkyl groups; and in which R4 and R6 are the same or different and are aryl or alkaryl groups. Other antioxidants and fillers may be present.
Patent GB-1486784-A (GB)
Title: Photosensitive silver halide elements
IPC: G03C1/825
Filed: 1974-10-21
Abstract: 1486784 Photographic light absorbing layers POLAROID CORP 21 Oct 1974 [23 Oct 1973] 45461/74 Heading G2C A photo-sensitive element comprises at least one silver halide emulsion layer and a layer containing carbon black and a water-soluble salt of a heavy metal capable of forming a sulphide that is insoluble in water, e.g. a water-soluble salt of silver, copper, platinum, palladium, zinc, cadmium, lead, iron or bismuth, such as a nitrate, fluoride, sulphate, perrhenate, bromide, chloride or acetate. The carbon black layer, which may be an opaque antihalation layer, may be coated directly on the silver halide emulsion layer or on the opposite side of the support, or may comprise an opaque backing layer for a receiving layer of a photo-sensitive film unit for the silver salt diffusion process and may be a removable backing layer of a film unit as described in Specification 1425659.
Patent GB-1531233-A (GB)
Title: Laying of pipes or cables in a bed of material
IPC: E02F5/10
Filed: 1975-10-21
Abstract: 1531233 Laying submarine cables WHARTON ENGS (ELSTREE) Ltd 21 Oct 1975 [21 Oct 1974] 45502/74 Heading H2C [Also in Division F2] In laying a pipe or cable in a bed of material a tube 1 having cutting tines 5 provided on its outer surface removes by shaving material from a bed of material to form a trench when the tube is moved along the bed of material and the pipe or cable 10 is fed through the tube into the trench adjustable, skids 12 being provided to control the depth of the trench cut and the tines 5 are so disposed that in use the leading end portion of the tube is disposed above the surface of the bed of material and a portion of the other end of the tube is disposed below the surface of the bed of material. The tube is preferably of rectangular cross-section, cutter means being provided on at least two faces of the tube. The tube 1 may be pulled along a seabed by a cable 4 attached to a lay barge and a foil or foils 14 can be provided beneath the tube 1 to ensure that the skids 12 engage the surface of the sea bed. Back fill dozer blades 24 may be provided to fill the trench over the pipe or cable, and a skeleton plough may be provided ahead of the cutter means to remove boulders from the path of the cutter means. A wide front skid may be provided with an upturned front portion to stabilise the apparatus.
Patent GB-1506530-A (GB)
Title: Transmitting video signals
IPC: H04N19/50
Filed: 1975-11-03
Abstract: 1506530 Video signal encoding; digital transmission ROBERT BOSCH GmbH 3 Nov 1975 [15 Nov 1974] 45665/75 Headings H4F and H4P Delta-encoded video signals are fed to a quantizer which is changed for a predetermined time from a first quantization characteristic to a second when the video signal exceeds a preset threshold level. The signal exceeds this level when it represents a substantial change in contrast, e.g. the edge of an object in the scanned field. In order to reduce the noise that would otherwise appear in the picture as a consequence of jitter from one characteristic to the other when noise accompanying the video signal causes the signal to jitter about the threshold level, the characteristics have a common switching level, equal to the threshold level, at which the quantizer output changes from a first value to a second value, the first values and the second values respectively being the same for both characteristics. The output is therefore the same for a signal level closely above, or alternatively closely below, the threshold level irrespective of which characteristic is operative.