baber/WOPTO huggingface dataset:
Patent GB-1387087-A (GB)
Title: Process for the production of liquid epoxy-novolak resins
IPC: C08G59/08
Filed: 1973-09-05
Abstract: 1387087 Liquid epoxy-novolak resins SOC ITALIANA RESINE SIR SpA 5 Sept 1973 [20 Sept 1972] 41816/73 Heading C3B Liquid epoxy-novolak resins are prepared by a process characterized in that (a) a novolak phenolic resin having an average molecular weight of 220-300, a softening point of 25- 35 C. and 2À2-2À9 phenolic OH groups per molecule and 5-10 moles of an epihalohydrin are mixed and homogenized, preferably at 40-70 C. (b) the mixture is brought into contact with kieselguhr at 20-40 C., preferably for 1-60 minutes, and then the kieselguhr is separated, (c) an inorganic base is added over at least 1 hour at 80-115 C., the total quantity of base added being such that the ratio of the number of phenolic OH groups in the novolak to the number of equivalents of base is 0À68 : 1 to 0À75 : 1, and (d) the liquid epoxy novolak resin is then separated. In one embodiment 1000 p.b.w. of the mixture of novolak resin and epihalohydrin are mixed with 2-4 p.b.w. of kieselguhr in step (b). In a preferred embodiment the mixture of novolak resin and epihalohydrin is filtered through a filter containing a layer of kieselguhr. The novolak resins used are obtained by the condensation of phenol with formaldehyde preferably in a molar ratio of 1À6 : 1 to 1À9 : 1 at 80-110 C. in the presence of an acid catalyst. The inorganic base may be an alkali metal oralkaline earth metal hydroxide, oxide or carbonate and is preferably sodium hydroxide. The liquid epoxy-novolak resins produced typically have the following properties. Colour (Gardnernumber): 1-3; viscosity at 25 C.: 13,000-20,000 cps.; epoxy equivalent weight: 170-190; gelling time: 20-40 minutes.
Patent GB-1479161-A (GB)
Title: Vehicle brake anti-skid electronic control system
IPC: B60T8/72
Filed: 1974-09-26
Abstract: 1479161 Wheel anti-skid systems FIAT SpA 26 Sept 1974 41895/74 Heading G1N [Also in Division F2] An electronic anti-skid brake control system provides a threshold value of wheel deceleration for comparison with actual wheel deceleration this threshold value being higher for an initial brake release operation compared to that used for subsequent operation. A wheel velocity sensor 20 transmits to a frequency to voltage converter 100 whose signal is differentiated by a comparator 102 and amplified at 104 to a comparator 105. The standard threshold value Al is supplied to a scanner 106 and for an initial brake release operation has added to it a fixed increment S s , supplied through a capacitor C, diode D, and resistor R, from e.g. a switch 32 operated by depression of the brake pedal. This increment S S  will have decayed by the next release operation. The compared value is transmitted to a pressure actuator for wheel brake actuators. The threshold increase is required to avoid immediate initial brake release caused by initial high wheel deceleration during a heavy application.
Patent GB-1021825-A (GB)
Title: Method and apparatus for treatment of molten metal
Inventor: WAKAMATSU KOHEI
IPC: F27D99/00
Filed: 1962-11-06
Abstract: In a method of and apparatus for stirring molten metal in a transfer ladle the ladle is caused to orbit round a path offset from its central axis and the direction of movement is alternately reversed; the ladle may additionally be rotated about its own axis.  The method and apparatus may be used to stir in an alloying additive, desulphurizing-, dephosphorizing- or desiliconizing-agent, and in the production of spheroidal graphite cast iron.  Examples relate to the removal of phosphorus by oxidation by surface blowing and combination with CaO; desulphurization with calcium carbide; alloying with ferrosilicon; and production of spheroidal graphite cast iron by use of a spheroidizing agent consisting of a rare earth element and calcium of medium particle size, fluorspar flux, and calcium silicide seeding agent.
Patent GB-1088755-A (GB)
Title: Hydroxybenzophenone derivatives and their use as ultraviolet absorbers and rot-proofers
Inventor: HEAD FRANK SAMUEL HENRY
IPC: C07C49/84
Filed: 1963-10-24
Abstract: The invention comprises compounds of formulae <FORM:1088755/C2/1> <FORM:1088755/C2/2> where X is halogen, Y is H or a substituent which does not interfere with the rot-proofing property of the halophenol precursor, n is 1-5, R is optionally substituted polymethylene or -(CH2)s-O-(CH2)twhere s and t are integers, A and B are H or substituents* which do not interfere with the U.V.-absorption property of the benzophenone precursor, p is 1-3, m is 1-4, one Z is OH and the other is H, OH or a substituent*.  These compounds are prepared from the appropriate halophenol, hydroxybenzophenone and RX2, possibly via intermediates made from 2 of these components.ALSO:Cellulosic textiles, e.g. cotton, are rotproofed and simultaneously rendered resistant to u.v.-degration by impregnation in a solvent, such as pyridene or white spirit, with compounds of formul  <FORM:1088755/D1-D2/1> where X is halogen, Y is H or a substituent which does not interfere with the rot-proofing property of the halophenol precursor, n is 1-5, R is optionally substituted polymethylene or -(CH2)s-O-(CH2)twhere s and t are integers, A and B are H or substituents* which do not interfere with the u.v.-absorption property of the benzophenone precursor, p is 1-3, m is 1-4, one Z is OH and the other is H, OH or a substituent*.ALSO:Cellulosic textiles, e.g. cotton, are rendered resistant to fungal attack and u.v.-degradation simultaneously, by impregnation in a solvent such as pyridine or white spirit, with compounds of formul  <FORM:1088755/A5-A6/1> where X is halogen, Y is H or a substituent which does not interfere with the rot-proofing property of the halophenol precursor, n is 1-5, R is optionally substituted polymethylene or -(CH2)s-O-(CH2)twhere s and t are integers, A and B are H or substituents which do not interfere with the u.v.-absorption property of the benzophenone precursor, p is 1-3, m is 1-4, one Z is OH and the other is H, OH or a substituent.
Patent GB-1240627-A (GB)
Title: Process for increasing viscosity of uncured polyester resins
IPC: C08K3/22
Filed: 1969-08-22
Abstract: 1,240,627. Polyester resin compositions. GENERAL TIRE & RUBBER CO. 22 Aug., 1969 [23 Aug., 1968], No. 42097/69. Heading C3P. The viscosity of a polyester resin composition, which is a mixture comprising at least one polyester resin which is a reaction product of at least one dibasic carboxylic acid (or anhydride) and at least one glycol and having an acid number of from 10 to 100 and having at least onefourth of the ester end groups as carboxyls, at least one polymerizable vinyl monomer, a freeradical generating catalyst, and a polymerization inhibitor, is increased by (a) adding to the mixture a material selected from calcium oxide and calcium oxide/hydroxide mixtures, the material being in an amount of from ¢ to 10 moles of the material per carboxyl equivalent of the polyester resin; to form a homogenous composition; and (b) adding to the homogenous composition, water to give an amount of water of from “ to 5 moles of water per carboxyl equivalent of the polyester resin. In the examples the mixtures comprise polyesters derived from isophthalic acid, fumaric and propylene glycol, styrene, quinone, 2,5-dimethyl hexane-2,5-diperoctoate, water, calcium stearate, calcium carbonate, calcium oxide and calcium hydroxide and fiberglass mats are impregnated.
Patent GB-1384021-A (GB)
Title: Cured plasticised elastomeric compositions
IPC: C08L71/02
Filed: 1972-09-11
Abstract: 1384021 Plasticized cured acrylate elastomer composition CHICAGO RAWHIDE MFG CO 11 Sept 1972 [13 Sept 1971] 42147/72 Heading C3P [Also in Division F2] A cured elastomeric acrylate rubber composition is formed from an acrylate polymer rubber and up to about 25 wt. per cent of the rubber material, of a polyether plasticizer having a plurality of alkane side groups . The plasticizer preferably has a molecular weight of at least 1000. The plasticizer may include at least 25 wt. per cent of a polymer having repeated units derived from ethylene oxide, and has terminal hydroxyl groups. It is preferably a block polymer derived from ethylene oxide and isopropylene oxide. The plasticizer is added to an acrylate rubber/soap/sulphur vulcanizing composition before curing. In the examples an ethyl acrylate terpolymer rubber is used containing carbon black, and sulphur mixed with sodium and potassium stearates as a curing system. The plasticizers used in the examples are ethylene oxide/isopropylene oxide block copolymers. 2-Chloroethyl vinyl ether and vinyl chloroacetate are mentioned as comonomers providing curable sites.
Patent GB-1358728-A (GB)
Title: Golf trolleys and seats therefor
IPC: B62B5/08
Filed: 1972-09-11
Abstract: 1358728 Golf trolleys W A J HARRIS 11 Sept 1972 [10 Sept 1971] 42236/71 Heading B7B A folding seat comprising X-shaped frame members is detachably secured to a golf trolley by a mounting, e.g. a metal or plastics spring clip 2 secured to a plate 6 fixed to the spine 5 of the trolley, the base 1 of the seat being held by the clip. In other embodiments, the mounting comprises a block 15, Fig. 13, provided with a bearing recess 15a closed by a pivoted catch 16, or a U-shaped member (25), Figs. 14 and 15 (not shown), carrying a screw (26) or pin (27) respectively to hold the base 1. The clip 2 may be carried by a tube 20, Fig. 4, which fits over a tubular support 19 of the trolley.
Patent GB-1124922-A (GB)
Title: Improvements in or relating to the knitting of tubular articles on circular knittingmachines
Inventor: PEBERDY ROLAND
IPC: D04B35/34
Filed: 1964-10-16
Abstract: Articles which are knitted in succession on a superposed cylinder machine are separated from each other by severing the yarn joining them during the period when one article is being cast off the needles and when the yarn is being taken and knitted to commence the succeeding article.  At the end of one article the needles are lowered without taking a yarn to cause them to cast off their loops. On the next rotary motion and prior to the last needles casting off their loops a leading group of needles is raised to an elevated position whereby the yarn is fed about their shanks.  As the needle cylinder continues to rotate the last group of needles cast off their loops and the sinkers engage and draw in the yarn about the elevated leading needles.  This latter action causes the yarn to break about the needle shanks but is held firm about them by the sinkers so that the subsequent needles take and knit the yarn in the normal way for the commencement of the next article.  Alternatively in the case of stretch yarns a bluff member which co-operates with a sinker extending between the needles of the elevated group may have a cutting edge which actually co-operates with the sinker to cut the yarn.
Patent GB-966241-A (GB)
Title: Improvements in and relating to ball and socket joints
Inventor: TOWNSEND ALBERT WILLIAM
IPC: F16C11/06
Filed: 1961-11-27
Abstract: 966,241. Ball joints. AUTOMOTIVE PRODUCTS CO. Ltd. Oct. 24, 1962 [Nov. 27, 1961] No. 42333/61. Heading E2F. In a ball joint of the type comprising a ball 11 disposed within a substantially cylindrical open ended socket 5, an upper annular bearing bush 12 interposed between the ball and the socket and bearing against an internal shoulder 9 at the end of the socket from which the ball pin extends, and a lower annular spring loaded bearing bush, the lower bush is divided into two or more arcuate portions by gaps 3 or grooves 4, at least one of the divisions being a gap, and the external diameter of the bush is such as to provide a nominal clearance between the bush and the socket so that the spring urges the bush into contact with the ball and thereby forces the portions outwardly into engagement with the socket. The surface of the lower bush in contact with the ball may be conical, as shown, or partspherical, and both bushes may be made of synthetic plastics material such as nylon or acetal resin, which may contain additives such as molybdenum disulphide, graphite, silicones or P.T.F.E.
Patent GB-1236258-A (GB)
Title: Apparatus for measuring rotational speed
IPC: G01P3/48
Filed: 1968-09-05
Abstract: 1,236,258. Analogue dividers. JUNGNER INSTRUMENT A.B. 5 Sept., 1968 [20 Sept., 1967], No. 42350/68. Heading G4G. [Also in Division H3] The frequency f of a signal is determined by feeding the signal and a reference signal of frequency f 0  to a gating circuit to produce an output signal Cf/f 0  where C is a constant. In one embodiment, Fig. 3, a tacho-generator 7 rotating at a speed f rot  consists of a resolver fed with a reference signal f 0 /2 from reference source 1 and divider 13 to produce an output signal f1 = f 0 /2 + nf rot . This signal is then fed via limiter 8 and divide-by-two stage 9 to produce waveform F 12 , Fig. 4, at the input of unit 10. A reference squarewave signal at frequency f 0 , F 13 , Fig. 4, is fed to a second input of unit 10, and the resulting output signal F 14  contains f 1 /2 pulses/second, the leading edge of which are synchronized with positive-going zero passages of signal F 13  and are of a duration corresponding to an integral number of cycles of F 13 . The signal F 14  is delayed by a period 1/f 0  in unit 11, to give signal F 15 , and the two signals F 14 , F 15  are fed via EXCLUSIVE-OR circuit 12 and switch circuit 5 to produce signal F 17  which is integrated to provide the required D.C. output.
Patent GB-1207700-A (GB)
Title: Coupling device
IPC: E04G7/30
Filed: 1968-09-06
Abstract: 1,207,700. Scaffolding clamps. KOTTGEN & CIE G.m.b.H. 6 Sept., 1968 [6 Sept., 1967], No. 42387/68. Heading B2B. [Also in Division F2] A coupling device for tubes or rods, e.g. scaffolding tubes, comprises a collar 3 which is welded to a sleeve 3b and includes a flange 3a, a spigot 2 which includes a flange 2a seating against a shoulder formed within the collar and a portion beyond the flange which enters the sleeve 3b, a transverse pin 5 which is passed through aligned apertures in the collar and spigot to couple them together, and a catch 8 in the form of a spring which is adapted to co-operate with recesses 6, 7 in the pin such that the pin may be moved between its fully coupled and uncoupled positions easily, as by a tap from a hammer, but is prevented both from moving out of either position owing to vibration and from being withdrawn completely in either direction. The spigot 2 may be either a separate member adapted to fit within a scaffolding tube or may be integral with a rod or tube of the scaffolding, the sleeve 3b being adapted to engage a further rod or tube.
Patent GB-1478472-A (GB)
Title: Semiconductors
IPC: H01L21/00
Filed: 1974-09-30
Abstract: 1478472 Semiconductor devices GENERAL ELECTRIC CO 30 Sept 1974 [11 Oct 1973] 42447/74 Heading H1K A semiconductor controlled rectifier contains  a predetermined distribution of a recombination impurity such as Au or Pt and has a glass passivation layer 37 at its periphery covering the junctions. A process to achieve these two ends comprises providing, e.g. by diffusion, a 4- layer pnpn structure; oxidising opposed major surfaces 22, 23 to form overall oxide coatings 31, 32; opening windows 34 in the oxide coating 32 at a plurality of locations each corresponding to the site of one of a plurality of s.c.r. pellets to be divided from a common wafer; diffusing Au into the pellets through the windows 34 from a layer vapour-deposited thereon; masking the windows 34 and etching an orthogonal gridshaped window in the oxide layer 32, each window 34 being surrounded by and spaced from limbs of the grid; etching a corresponding grid in the other oxide layer 31; etching opposed grids of grooves in the wafer, the grooves intersecting the junctions as shown; removing the mask from windows 34; applying to the grooves particulate glass in alcohol and heating firstly to evaporate the alcohol and then to fuse to glass to form layers 37; applying contacts; and dividing the wafer into pellets along the grooves, e.g. by laser scribing. The succession of the various heating steps in general from higher temperatures to lower temperatures ensures that no heating step disturbs the effect of earlier steps (in particular the glass fusion step does not significantly alter the previously diffused Audistribution).
Patent GB-1469063-A (GB)
Title: 2,3-dihalo-alkanoyl-thio-urethanes process for their preparation and their use as fungicides
IPC: C07C239/00
Filed: 1975-11-06
Abstract: 1469063 Dihalo - alkanoyl - [thio] - urethanes BAYER AG 6 Nov 1975 [6 Dec 1974 5 Aug 1975 16 Aug 1975] 42464/75 Heading C2C Dihalo-alkanoyl-[thio]-urethane of the formula in which R and R<SP>1</SP>, which may be the same or different, are hydrogen or alkyl, R<SP>11</SP> is substituted or unsubstituted aryl, benzyl or alkyl, Hal is chlorine or bromine, and X is oxygen or sulphur, are prepared by reacting 2,3-dihalo alkanoyl isocyanate of the general formula with a compound of the formula H-X-R<SP>11</SP>. The compounds of the invention have fungigicidal properties. Many examples are given with the preparation of the starting isocyanate compounds of Formula II.
Patent GB-1486474-A (GB)
Title: Method and reagent for the enzyme kinetic determination of the concentration of a substrate
IPC: C12Q1/32
Filed: 1974-10-03
Abstract: 1486474 Enzyme - kinetic determination EPPENDORF GER€TEBAU NETHELER & HINZ GmbH AND BOEHRINGER MANNHEIM GmbH 3 Oct 1974 [4 Oct 1973 21 Aug 1974] 42918/74 Heading G1B A method for the enzyme kinetic determination of the concentration of a substrate wherein at least one enzyme of high specificity is added and the rate of enzymatic reaction is measured, the method comprising adding at least one competitive inhibitor specific for the rate determining step of the enzyme substrate reaction, bringing the ratio of the substrate concentration range C S  to the apparent Michaxelis constant KM to 0À2:1 or less, thereby approximating the conditions of a pseudofirst order reaction, homogenising the mixture, determining the change in a reaction parameter specific for the reaction at specified intervals of time and calculating therefrom the concentration of the substrate to be detected suitably, the competitive inhibitor reversibly binds the enzyme and/ or the substrate without undergoing chemical reaction. The sensitivity of the method may be increased by increasing the enzyme concentration and/or by increasing the reaction temperature. The method is suitable for determining the concentration of substrates dissolved or suspended in blood serum or blood plasma. The determination of uric acid and glucose, using as competitive inhibitor potassuim thiocyanate, is exemplified.
Patent GB-1488289-A (GB)
Title: Electrical connectors for flat conductor cable
IPC: H01R12/68
Filed: 1975-10-20
Abstract: 1488289 Electrical connectors AMP Inc 20 Oct 1975 [29 Oct 1974] 42957/75 Heading H2E An electrical connector for crimp connection to a flat conductor 2 of a flat cable 3, comprises a channel shaped portion 4 defined by a web 7 connecting opposed side walls 6, wherein the web 7 has struck therefrom at least one lance 9 that extends into the channel and towards one side wall 6 with its free edge 10 proximate to and parallel with said one side wall. In the crimped condition this side wall overlies said free edge. As described, the side walls are tapered to a point 8 for piercing the cable insulation and back side wall has adjacent thereto a pair of lances 9 which are inclined at approximately 60 degrees to the web towards the adjacent wall 6 and over an aperture 11 in the web 7. Stiffening ribs 12 are provided between opposed pairs of lances 9. Two portions 4 may be provided, one at each end of a shank 5. The portions 4 may be orientated in the same direction for making butt connections, Fig. 1, or one may be orientated at 90 degrees to the other, Fig. 6, not shown, for making tap connections between flat conductors at right angles. Alternatively, Fig. 7, not shown, one end of the shank 5 may be provided with a tab 42 which extends normally to the shank 5 to make a connection with a socket outlet 90 (Figs. 8, 9). After the side walls have pierced the cable insulation the free ends are bent over to lie in a common plane parallel to the web 7, Fig. 5, the lances 9 being resiliently forced downwards by the cable conductor 3 which is in contact therewith. Three connectors with tabs 42 after crimping to the cable 3 may be mounted on an insulating sheet 76 of a floor plate 78. Apertures 88 in base-plate 84 accommodate the side walls 6, which may be covered with insulating tape, further apertures 89 allowing the tabs 42 to project therethrough to mate with terminals within insulating housings 104. Screw 110 secures socket outlet 90 to base-plate 84 and further screws in apertures 91, 82<SP>1</SP>, 82 secures the cable to the outlet 90.
Patent GB-997618-A (GB)
Title: Process and apparatus for the quantitative distillative analysis of a component of aliquid mixture
Inventor: EBNER HEINRICH
IPC: G01N25/14
Filed: 1963-10-31
Abstract: 997,618. Analysing liquids by distillation. HEINRICH FRINGS G.m.b.H. Oct. 31, 1963, No. 43105/63. Headings B1B and B1X. The amount of a liquid component in a liquid mixture may be determined by measuring the difference in boiling points between the liquid mixture with and without the selected component. In one embodiment of the apparatus of the invention (Fig. 1), the liquid mixture is supplied to boiling vessels 1 and 2 from container 23 through conduits 24 and 21. Each boiling vessel has a heater 7 and an inner vessel 11 and 12 which surround thermocouples 13, 15, 14 and 16 which are connected in series in that order to an amplifier 17 and indicating instrument 20. The function of vessels 11 and 12 is to prevent overheating. Boiling vessel 1 has a condenser 3 above it which is provided with two condensing surfaces, one for that liquid boiling within the inner vessel 11 and the other for the liquid boiling in vessel 1. The vessel 2 has a fractionating column 4 above it together with a condenser 6 and fraction divider 5 whilst the water flow to both condensers 3 and 6 is regulated by valve 33 through conduit 32. A reading is taken on instrument 20 once the boiling temperature in vessel 12 is constant. An embodiment of the apparatus for continuous analysis, Fig. 2 (not shown), has a pumping device which supplies the liquid mixture at a controlled rate, separately to vessel 1 and also to the fractionating column 4 at such a position that the liquid component under analysis is distilled off and none reaches the vessel 2. Both vessels 1 and 2 are equipped with overflow devices, whilst the indicator 20 is replaced by an automatic line recorder. In another embodiment, Fig. 3 (not shown), continuous analysis is effected as above, but the liquid mixture flows at a controlled rate serially through vessel 1 and then on to the fractionating column 4. Continuous analysis may also be carried out in another embodiment, Fig. 4 (not shown), which is similar to apparatus immediately above, but has a heated liquid mixture supply and the provision of 4-point thermocouples situated in the vapour zone above each boiling liquid. The temperature difference in this case is recorded on a device for measuring small voltages, i.e. a compensograph, while the reflux divider is constituted by a small open-topped vessel which has ports both to the inside of the condenser and the distillate discharge. A fully automatic apparatus may also be used. Examples of the invention refer to the determination of (a) ethanol in fermenting beer ; (b) acetone in water ; (c) ethanol in vinegar, and (d) ethyl acetate in acetic acid. Other mixtures which can be determined may contain methanol, propanol, methylpropyl ketone, acetone, acetic acid, benzene, toluene, xylene, chloroform, ethyl acetate and water. The analysis of a liquid mixture having more than two components is also mentioned.