baber/WOPTO huggingface dataset:
Patent GB-970324-A (GB)
Title: Improvements in or relating to urethane-oil coating compositions
IPC: C08G18/00
Filed: 1961-12-21
Abstract: Film-forming polyurethanes are prepared by a process which comprises reacting an organic polyisocyanate with an ester reactant which comprises one or more polyol esters with or without one or more free polyols, the polyol esters being predominantly partial esters of unsaturated fatty acids characteristic of glyceride drying oils, at least one of the free or esterified polyols being a polyether polyol having a molecular weight above 500 to which 2 to 40% of the total of the free and esterified hydroxyl groups in the reactant mixture are bonded, the ester reactant being one containing 0.5 to 5.0 free hydroxyl groups for each ester group present, and the relative proportions of organic polyisocyanate and ester reactant being such that the ratio of free isocyanate groups to free hydroxyl groups in the latter is above 0.8, the process being carried out using as viscosity control agent an organotin compound of the formula <FORM:0970324/C3/1> wherein X represents an alkyl radical containing from 1 to 18 carbon atoms; R1, R2 and R3 are the same or different and each represent a halogen atom, an alkyl radical containing from 1 to 18 carbon atoms or an acyloxy group, or R1 represents a halogen atom, an alkyl radical containing from 1 to 18 carbon atoms or an acyloxy group and R2 and R3 together represent an atom of oxygen, the organotin compound being in an amount of from 0.001 to 0.5% by weight of the total weight of the reactants. Many reactants and organotin compounds are specified.  The reaction may take place in solution in organic solvents and the reaction products may be converted into coating compositions by the addition of solvents, e.g. hexane, toluene, xylene, low boiling petroleum hydrocarbons, toluene-methylene chloride mixtures, di-isopropyl ether, ethyl acetate, methyl ethyl ketone, and cyclohexanone; stabilizers, e.g. methanol; and driers, e.g. cobalt, lead or manganese naphthenate in mineral spirits.  An example is given in which the process of the invention is compared with similar processes without the organotin compound in some of which ferric acetylacetonate and lead naphthenate are used as viscosity control agents. Specification 892,137 also is referred to.
Patent GB-1062678-A (GB)
Title: Improvements in or relating to seats
IPC: B60N2/22
Filed: 1965-10-29
Abstract: 1,062,678. Adjusable seats. F. KEIPER. Oct. 29, 1965 [Nov. 17, 1964], No. 45923/65. Heading A4J. [Also in Division E2] A hinge fitting at one side of a vehicle seat includes two parts 15, 40, which turn together about the hinge axis at 35, to provide a limited range of precise angular adjustment of the seat back, relatively to the fixed member 13 of the hinge, and are uncouplable, so that one, 40, remains stationary, while the other, 15, which forms part of the seat back frame, can be rotated freely about the hinge axis through a wide angular range to bring the seat back into forwardly or rearwardly lowered positions. The part 40 is moved, during precise adjustment, by means of a co-axial knob 26, through gear train 37 38 and 41, meshing with arcuate rack 42 fixed to member 13. The motion is transmitted to the seat back frame 15 by means of pawl 52, pivotally mounted on plate 40 at 56, and engaging watch 54 therein. Pawl 52 is rivetted to co-pivotal actuating lever 55, so that, on depression of the lever, the pawl is moved out of slot 54 and frame part 15 can be freely rotated. On returning the seat back to the position of adjustment, spring 60 reengages pawl 52 in notch 54, thus reestablishing the fixed angular relationship between the parts 15 and 40. A partial operation of lever 55, to allow the forward movement of the seat back, occurs when pawl 52 abuts rocker 69. Further movement of the lever against the spring action of the rocker, enables pawl 52 to clear the deeper side of notch 54 and allows the seat back to be lowered rearwardly Braking means for the precise adjustment mechanism include a coiled spring (29) coaxially mounted beneath knob 26 (Fig.3, not shown) and engaging a Mixed brake drum (27) to prevent forces acting on the seat back from altering the position of adjustment. A further braking device 46 has resiliently urged shoes for retarding the rim 45 of part 40.
Patent GB-1242681-A (GB)
Title: Diffusion masking in semiconductor device fabrication
Inventor: BROWN DALE MARIUS
IPC: H01L27/092
Filed: 1968-09-27
Abstract: 1,242,681. Masked diffusion. GENERAL ELECTRIC CO. 27 Sept., 1968 [13 Oct., 1967], No. 46116/68. Heading H1K. A diffusion process uses as a mask an apertured metal film formed on a passivating film on the surface of a semi-conductor body. Diffusion may take place through the unbroken passivating film or this may also be apertured, in correspondence with the metal film. The metal film may be used as an etching mask for this passivating film. Typical semi-conductors are silicon, germanium, and A<SP>III</SP>B<SP>V</SP> compounds such as gallium arsenide. Dopants used are boron and phosphorus. Diffusion may be from the gaseous phase or from a doped silicon layer on the semi-conductor or on its passivating layer. The masking metal, which should not react with the passivation, may be molybdenum or tungsten. Passivants used are silicon oxide, silicon nitride, and silicon oxynitride. The specific embodiment is a lateral transistor with concentric aluminium disc and annulus collector and emitter electrodes-the metal mask is left in place under a phosphorus-doped silicon oxide film used as the diffusion source for forming the emitter and collector layers.
Patent GB-1192816-A (GB)
Title: Scanning Type Electron Microscope
IPC: H01J37/28
Filed: 1967-10-10
Abstract: 1,192,816. Electron microscopes. HITACHI Ltd. 10 Oct., 1967 [17 Oct., 1966], No. 46241/67. Heading H1D. [Also in Division G1] In a scanning electron microscope, the intensity of the electron beam 16 incident upon the specimen 6 is periodically varied-as shown, by a pulse generator 20-whereby an A.C. component may be filtered off from the output signal generated by the specimen, demodulated, and employed to produce a synchronously scanned image of the specimen on the oscilloscope 11. The use of an A.C. output reduces noise, and permits various measurements to be performed on semi-conducting specimens incorporating biased P-N junctions (see Division G1).
Patent GB-1156338-A (GB)
Title: Electromagnetic Reed Relays
Inventor: JESMAN LEON
IPC: H01H51/28
Filed: 1967-06-16
Abstract: 1,156,338. Moulding a reed relay. J. F. J. PRODUCTS Ltd. 13 June, 1968 [16 June, 1967; 11 Oct., 1967], Nos. 27938/67 and 46414/67. Heading B5A. [Also in Division H1] In the manufacture of an electromagnetic reed relay, a reed contact unit 21 or a tube in which the contact unit is to be mounted has end pieces 33 formed thereon by injection moulding before a coil is wound between the end pieces and the complete assembly is encapsulated in a thermoplastics material by injection moulding. The end pieces 33 are provided with recesses such as 37 to simplify the mounting of the assembly in a coil winding machine. Connectors 27, 29 are embedded in the end pieces 33 to provide connections to the contact reeds and coil ends. Such a relay may have a plurality of reed contact units (Fig. 6, not shown). The tube in which the contact unit is mounted may be made of phenolic resin having injection moulded end pieces 33 of nylon.
Patent GB-1055988-A (GB)
Title: Process for improving the adhesion of shaped structures made from polyesters to rubber elastomers
IPC: C08J5/06
Filed: 1963-11-25
Abstract: An impregnating bath for improving the adhesion of shaped articles of polyesters to rubber elastomers comprises an aqueous dispersion of a latex of rubber elastomer and a finely divided organic compound having a plurality of isocyanate groups and enveloped by a film-forming compound which is inert to the isocyanate and stable to water at temperatures of up to 50 DEG  C. Suitable encapsulated isocyanates are described in Specification 1,053,500.  In exemplified compositions the rubber latex is a latex of a copolymer of butadiene, styrene and vinyl pyridine and the bath also contains a water-soluble resorcinol formaldehyde condensate, formaldehyde, ammonia, polyvinyl methyl ether and naphthalene-1,5-diisocyanate which has been encapsulated by polystyrene, substituted phenol/xylene/formaldehyde condensation product, polyvinyl decahydronaphthyl ether or chlorinated rubber.ALSO:The adhesion of polyester cords and fabrics to rubber is improved by impregnating the cords and fabrics with an aqueous dispersion of a rubber latex and a finely divided organic compound having a plurality of isocyanate groups and enveloped by a film-forming compound which is inert to the isocyanate and stable to water at temperatures of up to 50 DEG C.  Suitable film-forming compounds include polystyrene, phenol-xylene-formaldehyde resin, chlorinated rubber, and polyvinyl decahydronaphthyl ether.  The aqueous compositions may also contain a water-soluble resorcinal-formaldehyde condensate, formaldehyde, ammonia, and polyvinyl methyl ether.  The exemplified isocyanate is naphthalene- 1, 5- düsocyanate and the exemplified rubber is a terpolymer of butadiene, styrene, and vinyl pyridine.
Patent GB-1254000-A (GB)
Title: Chemical feed method and apparatus
IPC: C05C1/00
Filed: 1968-10-01
Abstract: 1,254,000. Treating foodstuff. BETZ LABORATORIES Inc. 1 Oct., 1968 [13 Oct., 1967], No. 46642/68. Headings A2D and A2E. [Also in Divisions A5, Bl, B2, C1 and D2] Spices, preservatives and dyes may be used in food processing by a method wherein a concentrated solution of the chemical to be dispersed is placed in a liquid-retaining recepticle at least part of the wall of which is of semi-permeable membrane material and the liquid to be treated flows past the other membrane surface (see Group B1-2).
Patent GB-1450723-A (GB)
Title: Electrical circuit breaker
IPC: H01H21/08
Filed: 1973-10-08
Abstract: 1450723 Automatic circuit breakers AIRPAX ELECTRONICS Inc 8 Oct 1973 46948/73 Heading H1N A two-part phenolic housing 12 for an electromagnetic or thermal type circuit breaker is formed with a forward facing boss 20 with an opening through which the circuit breaker operating handle 22 extends, the handle being dust sealed in relation to the housing by means of a silicone rubber gasket 42 sandwiched between rigid supports 40, 44 the edges of which are located in a groove within the boss 20. An aperture 56 in the upper facing of the housing 12 communicates with an arcing chamber 58 and is covered by a movable resilient plastics flap 50 having a turned-over end 54 which is engaged within a groove 62 in a resiliently hinged manner so that the flap 50 normally rests in a closed position over the aperture 56 to prevent the entry of contaminants but is movable in response to a rise in pressure within the circuit breaker housing to release such pressure and any exhaust gases, &c. to atmosphere. Specification 1,450,724 is for a similar circuit breaker suitable for use in a potentially explosive atmosphere.
Patent GB-1333070-A (GB)
Title: Process and apparatus for heat transfer between media at different pressure levels
IPC: G21C15/18
Filed: 1969-07-08
Abstract: 1333070 Nuclear power plant RHEINISCHE BRAUNKOHLENWERKE AG and W WENZEL 8 July 1969 [3 July 1969] 47054/70 Divided out of 1279864 Heading G6C In a high pressure, helium cooled nuclear reactor power plant, the helium flows through a heat exchanger where a reaction mixture is heated. The heat exchanger, which contains an intermediate heat transfer medium, e.g. liquid lead, is mounted below the reactor. A reduction in pressure in either the helium or reaction mixture ducts associated with the exchanger includes a column of lead to rise and seal that duct. Helium from the reactor 21 passes along the ducts 25, 26 to the section 22a of the exchanger 22. Liquid lead in the exchanger prevents contact between the helium and the reaction gases in the duets 27, 28 and section 22b while effecting a heat transfer between the two.
Patent GB-1451789-A (GB)
Title: Process for the printing of cellulos-containing textile material
IPC: D06P1/44
Filed: 1973-10-10
Abstract: 1451789 Printing cellulose HOECHST AG 10 Oct 1973 [10 Oct 1972 15 Sept 1973] 47315/73 Heading D1B Cellulose-containing textile are printed on, after impregnation with a diazo coupling component and sodium nitrite, with a paste comprising an aqueous dispersion of a diazotisable base having a grain size of #0.3mm., an acidifying agent and a thickening agent. Acidifiers, dispersing agents and dyes which may be included in the dispersion are listed, and examples are given. The textile printed may be cotton or rayon. The diazo coupling component may be an aromatic amide of a # hydroxy-α, # unsaturated acid or a #-keroacid, such as an aromatic amide of an unsubstituted or substituted #-hydroxynaphthoic acid or of substituted or unsubstituted acetoacetic acid.
Patent GB-1398725-A (GB)
Title: Disubstituted xanthone carboxylic acid compounds
IPC: A61K31/352
Filed: 1972-07-12
Abstract: 1398725 Disubstituted xanthone carboxylic acid compounds SYNTEX (USA) Inc 12 July 1972 [12 Jan 1972 5 June 1972] 47375/74 Divided out of 1398722 Heading C2C The invention comprises compounds of the formula  wherein either the X groups are identical and are -SO 2 R groups where R is OH, NH 2  or mono - or di-(C 1 -C 6 )alkylamino; or one X group is C 1 -C 5  alkyl or alkoxy or C 3 -C 5  cycloalkyl or cycloalkoxy and the other X group is -SO 2 R as above; and non-toxic esters, amides and salts thereof. They may be obtained by treating a compound of one of the formulµ wherein R<SP>20</SP> is (C 1 -C 5 ) alkyl or alkoxy, or (C 3 -C 5 ) cycloalkyl or cycloalkoxy; with an inorganic base other than NH 3  or with NH 3  or a mono- or di-alkylamine; optionally converting the products into their non-toxic esters, amides or salts. Examples are given for the production of the compounds. Pharmaceutical compositions comprise the compounds of Formula I above which may be administered orally, topically, parenterally or by inhalation in conventional forms, optionally together with other pharmaceutical agents. They are useful for inhibiting the effects of allergic reactions, also as smooth muscle relaxants and as vasodilators.
Patent GB-1343469-A (GB)
Title: Process for preparing unsaturated compounds
IPC: C07C5/27
Filed: 1971-10-12
Abstract: 1343469 Hydrogen transfer reactions; unsaturated alcohols SNAM PROGETTI SpA 12 Oct 1971 [13 Dot 1970] 47523/71 Heading C2C [Also in Division C5] Hydrogen transfer is effected between a first compound capable of accepting hydrogen and a second compound containing an olefinic centre of unsaturation capable of donating hydrogen by reaction in the presence of a complex of a Group VIII metal. Specifically mentioned is the conversion of 3-methyl-but-1-yn-3-ol and isopentene to give 3-methyl-but-1-en-3-ol and isoprene.
Patent GB-1328283-A (GB)
Title: Electrically and optically accessible memory array
IPC: G06F3/13
Filed: 1970-10-08
Abstract: 1328283 Transistor bistable circuits RCA CORPORATION 8 Oct 1970 [15 Oct 1969] 48022/70 Headings H3B and H3T [Also in Division G4] The subject matter of this Specification is similar to that of Specification 1,328,282 which is referred to but the claims relate to an electrically and optically accessible memory array comprising an integrated circuit array of memory units each comprising a semi-conductor bi-stable and a light valve responsive to the output of the bi-stable. The matrix consists of a conventional array of MOSFET flip-flop connected to word W and bit D 0 , D 1  lines, the light valves LV which may be light-scattering, light-absorbing, or light-polarization-rotating liquid crystal devices being connected to their associated flip-flop as shown. A photosensor such as a PN-diode one of the electrodes of which is extended to form one electrode of the light valve may also be included. In operation the flip-flop is reset, i.e. T 2  on and T 1  off before an input light signal can be applied. In the reset state a voltage - V appears at output 10 of T 1  so that the photodiode is charged to - V volts. The diode is then isolated using switch 6 to interrupt the -V bias and - V volts is applied to bit line d 1  to permit T 2  to respond to a change in voltage at its gate. Thus transistor T 6  is effectively substituted for T 4  as a load for T 2 . If no light signal impinges on diode D the charge on the diode D is only slightly reduced (by leakage) so that when the - V bias is restored the flip-flop remains reset. If however light does impinge on the diode, which is thereby rendered conductive, the charge on the diode decays and the reduction in voltage is communicated to the gate of T 2  to reverse the state of the flip-flop. The flip-flop is then set and remains so when the bias is restored.  When the flip-flop is set, no voltage appears across the light valve since point 10 is at OV. The valve thus remains transparent and light is transmitted as a binary "1" optical signal. Conversely with the flip-flop reset point 10 is at - V volts and the light valve disperses or attenuates, &c. (depending on the particular valve used), the light, and a binary "0" optical signal is produced. The Specification also describes some modifications to the optical arrangements of the memory of Specification 1,328,282. In one embodiment Fig. 7 (not shown) a pair of collimating lenses are disposed one at each side of the light valve array and an additional lens is provided between the array and the recording medium. In a further embodiment, Figs. 8 and 9 (not shown), the light valves are arranged for use in a reflective mode rather than a transmissive mode. The Specification also describes in some detail the construction of the light valve array as an integrated circuit which may be of the bulk silicon or silicon on saphire type. Specification 1,328,284 is also referred to.
Patent GB-1534705-A (GB)
Title: Contact bridging members for electric switches
IPC: H01H23/12
Filed: 1975-11-21
Abstract: 1534705 Mechanical switches D A SWANN 21 Nov 1975 [3 Dec 1974] 48026/75 Heading H1N A pivotable contact 1 for an electrical switch comprises a portion 2, 3 outwardly struck from one of its sides to define an abutment engageable by a switch actuator 19 which is operable to slide the contact 1 over and to pivot it about a fixed contact 13, 17 so as to cause one of its ends to engage or disengage another fixed contact. The pivotable contact 1 may be provided with a pair of abutments 2, 3 and can be arcuate in elevation, Fig. 4, arcuate in plan, and elevation (Figs. 5 and 6, not shown) or flat (Fig. 1, not shown). Two movable contacts 1, 1a are each co-operable with a set of fixed contacts 12-14, 16-18 and are mounted via spring biased pins 28, 29 on a reciprocable actuator 19. When the actuator 19 is pushed or pulled against the bias of a spring 21, the movable contacts 1, 1a slide over and pivot about the intermediate fixed contacts 13, 17 moving out of engagement with the contacts 12, 16 and into engagement with the contacts 14, 18. The actuator 19 is held in this position by the end 60 of a Z-shaped member 55, which is carried by the actuator 19, engaging the wall of a channel 65 in the switch casing (position b, Fig. 9 not shown) along which the member 55 moves upon movement of the actuator 19. The switch casing is defined by two parts 10, 11 snap-fitted together. The movable contact 1 may be used in the switches disclosed in Specification 1,534,704.
Patent GB-1224020-A (GB)
Title: Improvements in and relating to fuel injection pumps for internal combustion engines
Inventor: BECK WERNER
IPC: F02M59/28
Filed: 1968-10-10
Abstract: 1,224,020. Reciprocating pumps. BARKASWERKE VEB. Oct. 10, 1968, No. 48070/68. Heading F1A. In a fuel injection pump the delivery volume is controlled by rotating the pump plunger 4 relative to the barrel 3 by means of a toothed regulating sleeve 9 engaging in toothing 17 of a regulating member 18 mounted on an axially movable rod. The regulating member 18, which may be T-shaped, Fig. 2, or L-shaped, Fig. 3 (not shown), has a bore 20 through which the rod 19 passes, and is secured to the rod by a clamping screw 21; the toothing 17 of the member 18 is formed on a limb 25 (25<SP>1</SP>), the inner surface of which is tangential to, or at a distance a from the rod, and the member is secured against turning relative to the rod by a chamfered pin 22 in a bore 23 in the rod which engages a groove 24 in the bore 20. In assembling the member is first axially displaced from the bore 23 so that the pin abuts the inner surface of limb 25 (25<SP>1</SP>), and then moved so that the pin engages the groove 24, the clamping screw being lightened after final adjustment; the distance a is shorter than the chamfer 26 of the pin 22 for ease of assembly. The regulating sleeve 9, which is secured against axial movement by a spring 12 and guide sleeve 2, has extensions 14 which act on a driver piece 15 carried by the plunger. In a multi-plunger unit an equal number of regulating members and plungers are present.
Patent GB-1497611-A (GB)
Title: Clutch brake unit
IPC: F16B1/04
Filed: 1975-11-24
Abstract: 1497611 Clutch-brake combinations; friction clutches WARNER ELECTRIC BRAKE & CLUTCH CO 24 Nov 1975 [16 Dec 1974] 48216/75 Headings F2L and F2C In a clutch-brake combination a helical spring 11 normally interconnects an input hub 13 and an output hub 14, the output end 17 of the spring being connected to the output hub and the input end 37 being engagable by a braking disc 30 which is mounted on a sleeve 23 secured to the output hub and has projections 40 engaging in helical slots 39 of the sleeve so that axial movement of the disc 30 by a brake shoe 35 engaging it causes rotation of the disc to unwind the spring so that the clutch disengages, even when the input and output hubs are stationary. The spring 11 unwinds to frictionally engage the inner surface 24 of the sleeve 23. The end 37 of spring 11 is a tang which extends into a helical slot 39 of the sleeve, the end of the spring being axially expanded such that the tang 37 is resiliently moved along the slot by a projection 40. The sleeve 23 is secured to the output hub by screws 25 which pass through arcuate slots 55 so that the position of the sleeve is adjustable to adjust the position of slots 39 relative to the output end 17 of the spring 11 (in a notch 54) and compensate for manufacturing tolerances. In an alternative embodiment (Figs. 5, 6 and 7, not shown) the slots 39<SP>1</SP>) in the sleeve (23<SP>1</SP>) have each an axially extending section adjacent the end of the sleeve so that the slots do not move the brake disc axially in response to speed variations of the driving motor. In this embodiment the output end (17<SP>1</SP>) of the spring extends radially inwardly through an elongate slot in the output hub to engage in an inner adjustably mounted cylindrical spring clip. The output hub 14, as shown, supports a pulley and the clutch-brake combination is for use in a lawn and garden tractor.
Patent GB-1068107-A (GB)
Title: Cross-linking of polymeric products
IPC: C08F265/04
Filed: 1965-11-16
Abstract: Cross-linked polymers of N-vinyl lactams, vinyl esters or acrylate esters are obtained by heating one mole of a polymeric N-vinyl lactam, polymeric vinyl ester or polymeric acrylate ester with between 0.02 and 0.3 mole of an alpha, omega-diolefin having a molecular weight of from 68 to 280 in solution of an organic solvent common to the polymer and the alpha, omego-diolefin, in the presence of 0.05 to 1.0 mole of a tertiary alkyl peroxide or hydroperoxide per mole of said diolefin at a temperature between 100 DEG  C. and 200 DEG  C.  The polymer may be prepared in situ and simultaneously cross-linked.  Examples relate to the cross-linking of poly N-vinyl-2-pyrrolidine homopolymer and copolymer with vinyl acetate, polyethyl acrylate and poly (N-vinyl-2-piperdine/2-ethyl hexyl acrylate) copolymer.