baber/WOPTO huggingface dataset:
Patent GB-1073455-A (GB)
Title: Polymerisation process
Inventor: LOOKER EDWARD GIBSON
IPC: F02B47/00
Filed: 1964-12-03
Abstract: One or more ethylenically unsaturated monomers is polymerized in an aqueous medium in the presence of a catalyst, a dispersion of one or more water- and monomer-insoluble solid additives in a water-immiscible mobile organic liquid being added to the aqueous medium before or during polymerization.  Many monomers are listed, those preferred being vinyl chloride alone or with up to 50% other monomers, or methyl methacrylate alone.  The additives, e.g. pigments such as TiO2, carbon black and MgO and stabilizers such as tribasic lead sulphate are milled together with the dispersing medium which may be a monomer, e.g. vinyl chloride or vinyl acetate, or ethylene dichloride, or a liquid paraffin such as heptane. Suitable dispersing agents are low molecular weight polymers and copolymers of acrylic and methacrylic acids and esters and the additives may be coated, e.g. with calcium stearate or stearic acid.  The polymerization is in suspension or emulsion, suitable catalysts including hydrogen peroxide, alkali metal and ammonium persulphates, percarbonates and peracetates, benzoyl and lauroyl peroxides, peroxydicarbonates, diazoaminobenzene,a ,a 1-azodiisobutyronitrile, a ,a 1-azodibutyric acid, esters, a ,a 1-azodi -g -dimethyl valeronitrile and a ,a 1-azodicyclohexane carbonitrile or mixtures thereof. Emulsifiers, e.g. sodium salts of sulphated and sulphonated hydrocarbons or fatty acids such as sodium dioctyl sulphosuccinate, sulphonated diesel oil, sodium lauryl sulphate, stearamidopropyl dimethyl-b -hydroxyethyl ammonium nitrate, cetyl pyridinium chloride, cetyl trimethyl ammonium bromide and polyalkylene oxides and granulating agents, e.g. gelatine, methyl cellulose and hydrolysed polyvinyl acetate may be used.  In Example 1 vinyl chloride is polymerized in an aqueous medium in the presence of a dispersion of tribasic lead sulphate in dioctyl and dinonyl phthalates, a dispersion of TiO2, vegetable black and ultramarine blue and violet in ethylen dichloride with a thioglycollic acid-terminated methyl methacrylate polymer as dispersing agent, polyvinyl alcohol and cetyl and stearyl alcohols, using a ,a 1-azodiisobutyronitrile as catalyst. The aqueous medium of Example 2 contains a dispersion of tribasic lead sulphate in ethylene dichloride containing the nitrobenzoic acid ester of a methyl methacrylate-glycidyl methacrylate copolymer as dispersing agent, partially hydrolysed polyvinyl acetate, lead stearate and a wax powder and di-isopropyl peroxydicarbonate as catalyst.
Patent GB-1162524-A (GB)
Title: Sliding Ring Seal.
Inventor: TESKE FRITZ
IPC: F16C33/78
Filed: 1966-11-04
Abstract: 1,162,524. Mechanical seals. F. TESKE and L. TESKE. 4 Nov., 1966 [6 Nov., 1965], No. 49439/66. Heading F2B. A mechanical seal comprises a flexible magnetic disc 11 in facial sealing contact with inner and outer radially-spaced steel discs 16 and 15 mounted in relatively rotatable securing rings 14 and 13. The surface of the disc facing the steel rings has a thin layer 8 of anti-friction material, e.g. P.T.F.E. In a modification, Fig. 2 (not shown), a flexible magnetic disc (11) is provided on each side of the steel rings (15, 16) which are mounted in securing rings (20, 21) of non-magnetizable material, preferably a plastics material.
Patent GB-1147659-A (GB)
Title: Rocket motor
IPC: F02K9/70
Filed: 1966-11-04
Abstract: 1,147,659. Rocket motors. THIOKOL CHEMICAL CORP. 4 Nov., 1966 [15 Nov., 1965], No. 49648/66. Heading F3A. A plastic propellant rocket motor in which the thrust can be varied comprises relatively rotatable metal casing sections 111a, 111b each respectively containing a fixed, apertured plate 50, 54; a valve 144 arranged in a conduit 140 connecting a combustion chamber 117 to a forward chamber 122 containing a combustible charge 132 and igniters 136; a slidable piston 120; and a plastic propellant 138. On igniting the charge 132, the piston 120 is driven rearwardly by the pressure of the combustion products, and extrudes the plastic propellant through the holes 52, 56 into the combustion chamber where it is ignited by the hot combustion products of the charge 132 flowing through conduit 140. To reduce the thrust of the motor, the sections 111a, 111b may be rotated relative to each other to adjust the degree of alignment of the holes 52, 56 and/or the valve 144 may be opened to reduce the pressure differential between the chambers 122 and 117 and thereby reduce the rate of extrusion of the propellant. If the pressure in chamber 122 is reduced sufficiently the charge 132 is extinguished, but can be re-ignited with the igniters 136. In a similar rocket motor (Fig. 1, not shown) comprising a unitary casing and a single apertured plate, the apertures in the plate are closed by rupture diaphragms. A pivoted disc may also initially close the nozzle of the motor. The plastic propellant may be an uncured solid plastics propellant of the thermosetting type and can incorporate comminuted particles of solid propellants.
Patent GB-1529718-A (GB)
Title: Door pivoting device
IPC: E05D7/12
Filed: 1975-12-04
Abstract: 1529718 Pivots LA TELEMECANIQUE ELECTRIQUE 4 Dec 1975 [17 Dec 1974] 49810/75 Heading E2F A pivoting device for a door 2 includes a hinge pin 14 fixed to a door frame and a socket portion 5 which is first fitted to the pin 14 and then coupled to the door 2, the latter having an internal recess 3 linked to a surface of the door by a passage 4 that is perpendicular to the pivot axis. The socket portion 5 has a projecting part concentric to the axis of a bore 19 receiving the pin 14, the projecting part being placed in the recess 3 via the passage 4 and being coupled to the door by rotation of an operating means integral with the projecting part. The operating means comprises a flat lever 11 carrying a lug 17 for engagement with an indentation 18 in the outer surface 16 of the door, whilst the projecting part has cylindrical surfaces 8 to cooperate with the recess 3 and flats 9, 10 to allow insertion in the opening 4. The whole socket portion 5 is preferably made of material flexible enough to allow the lever 11 to bend during its rotation, and has a flat lower surface 12 to engage a bearing surface 13, 20 of the hinge pin portion. Preferably the door is hinged by two such pivoting devices, but only a single such device located at the bottom of the door may be necessary if the pivoting means at the top is reduced to a pin penetrating a recess.
Patent GB-1526747-A (GB)
Title: Heating/cooling plants
IPC: F25B49/02
Filed: 1975-12-04
Abstract: 1526747 Fluid-pressure servomotor systems STAL REFRIGERATION AB 4 Dec 1975 [13 Dec 1974 9 Oct 1975] 49843/75 Heading G3P [Also in Division F4] In a plant comprising a closed circuit for a refrigerant including a compressor 1 of variable capacity, a condenser 2, an expansion valve 3 and an evaporator 4, control means adjust the capacity of the compressor in response to pressure changes in the supply to the condenser. The compressor contains a chamber (31) Fig. 2 (not shown) isolated from two cylinder chambers (29, 30) by a valve (35) normally held closed by the pressure from a lubricating oil pump 9. When the pressure in a line 5 increases, a diaphragm 20 is depressed to move a valve 12 towards its closed position and reduce the pressure applied to the valve (35) which is opened by a spring (36) to reduce the capacity of the compressor. A second valve 13 controlled by a temperature sensor 23 in the evaporator 4 may also be provided to control the compressor. In a second embodiment, the condenser of a heat pump plant supplies the radiators (47) Fig. 4 (not shown) of a building heating system and the valve (13a) is electrically controlled by a unit (61) receiving temperature signals from the water in the heating system and from the outside air. A three-way valve (60) also controlled by the unit (61) permits a boiler (48) to supply the radiators when the outside temperature is below freezing.
Patent GB-1184350-A (GB)
Title: Preparation pf a Promoted Silica Cracking Catalyst
IPC: C10G11/05
Filed: 1967-11-02
Abstract: 1,184,350. Hydrocarbon conversion catalysts. W. R. GRACE & CO. 2 Nov., 1967 [3 Nov., 1966], No. 49931/67. Heading B1E. [Also in Division C5] Promoted SiO 2  gel catalysts are made by (I) adding a naturally-occurring clay and a stabilised crystalline synthetic aluminosilicate to a solution of an alkali metal silicate containing 1-15% of SiO 2 , (2) adding sufficient of an acid gelling agent to neutralise 40-100% of the alkali metal oxide contained in the alkali metal silicate and to cause gelation of the solution to a SiO a  gel, (3) ageing the gel (4) separating the gel by filtration (5) washing the gel and (6) drying the gel. The preferred aluminosilicates are X-type zeolites and the SiO 2  gel matrix may have a surface area of 150 m<SP>2</SP>/gm. or less. The zeolite may contain H<SP>+</SP>, R.E. Mg<SP>++</SP>, Mn<SP>++</SP>, Zn<SP>++,</SP> Th<SP>4+</SP> or Al<SP>3+</SP> (R.E.=rare earth).
Patent GB-1131252-A (GB)
Title: Purification of carboxymethyl cellulose salts
IPC: C08B11/20
Filed: 1966-11-09
Abstract: 1,131,252. Purification of carboxymethyl cellulose salts. E. I. DU PONT DE NEMOURS & CO. 9 Nov., 1966 [10 Nov., 1965], No. 50204/66. Heading C3A. Alkali metal salts of carboxymethyl cellulose (CMC) which contain water and a volatile aromatic hydrocarbon impurity are purified by heating the CMC in a first stage by means of a recycled hot gas until the total volatile content is in the range 15-35%, preferably 20-25% by weight, followed by contacting it in a second stage with a hot gas containing substantially no aromatic hydrocarbon. By " volatile " is meant material removed from the CMC by heating at 105‹ C. Sodium CMC is specified. The hot gas may be nitrogen, argon, CO 2  and/or air, and suitably contains less than 12% oxygen. It may be heated to 60-130‹ C. The starting CMC may contain 18-35% water and 45-60% total volatiles, water forming at least 40% of these volatiles, and less than 3000 p.p.m. of aromatic hydrocarbon, e.g. benzene.
Patent GB-1094349-A (GB)
Title: Dispersions of polymeric organic compounds and a process for their manufacture
IPC: C08J3/09
Filed: 1966-11-09
Abstract: Stable fluid colloidal dispersions consisting of (1) from 1 to 70% by weight of disperse phase comprising a polymeric organic compound of high molecular weight which is insoluble in the continuous phase; and (2) from 99 to 30% of a liquid continuous phase consisting of (a) at most 0.5% by weight of said dispersion of water; (b) formamide either alone or in admixture with an alcohol, an ether or an amine, the alcohol, ether or amine having a boiling point at 760 mm. Hg. in the range of 150 DEG  to 350 DEG  C., the admixture having a formamide content of at least 20% by weight; and (c) 3-25% (based on the weight of the disposed polymeric organic compound) of a non-ionic or an anionic surface-active organic compound as dispersing agent, the surface-active organic compound being soluble in water and in the liquid organic continuous phase, are obtained by evaporating an aqueous dispersion of a polymeric organic compound having a solids content of from 1 to 70% by weight, formamide (if desired in admixture with an amine, alcohol or ether) and an anionic or non-ionic surface-active agent, under reduced pressure to reduce the water content to below 0.5% by weight. Polymeric organic compounds exemplified are polyethylene, polyvinyl chloride and polytetrafluoroethylene.
Patent GB-1356570-A (GB)
Title: Slide potentiometer
IPC: H01C10/42
Filed: 1970-10-23
Abstract: 1356570 Variable resistors A B ELECTRONIC COMPONENTS Ltd 18 Oct 1971 [23 Oct 1970] 50487/70 Heading HIS A slide potentiometer comprises two body halves which fit together to define a slot through which the slider 26 protrudes and a groove in which the slider slides and along which a stationary dust shield 27 extends. The dust shield 27 is secured by bending around protrusions 21 and passes through an aperture in the slider which slides over the shield 27. In each body half a collector track 39 is snap-fitted between ribs 11 and 12 and a resistive track 37 is mounted on pins 16. Slider 26 carries a pair of bridging contacts 34, 35 on each side and has a recess 28 through which a screen 43 passes, the screen 43 being secured in slots 22 in the body halves and is provided to separate the potentiometers in each half. A collector terminal 40 extends from the collector track beneath the resistive track, being insulated from it by an insulating strip 41. The terminal 40 may be located at various positions along the collector track. Holes 47 in the collector track or notches 25 provide positively locatable positions for the slider. The outer surfaces of the body halves have holes and pins for mounting two or more potentiometer devices together.
Patent GB-1281943-A (GB)
Title: Carrying out reactions in the presence of metal catalysts
IPC: B01J23/90
Filed: 1969-10-14
Abstract: 1281943 Metal catalysed reactions EI DU PONT DE NEMOURS & CO 14 Oct 1969 [21 Oct 1968] 50545/69 Heading B1E Metal-catalysed reactions are effected in the presence of a catalyst comprising a continuous phase of a catalytic metal in which is dispersed 10-90% by volume of a refractory non-metal. Preferred metals are Pt or Ni and they may be used to disperse ThO 2 , ZrO 2 , SiO 2  or carbides, nitrides borides or silicides. Examples describe the preparation of catalysts and their use in hydrogenating acetylene to ethylene, oxidising ammonia to nitric acid, carbon monoxide to dioxide, or methanol to formaldehyde.
Patent GB-1209150-A (GB)
Title: Improvements in or relating to tuning arrangements
IPC: H03J5/24
Filed: 1967-11-07
Abstract: 1,209,150. Tuning resonant circuits. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 7 Nov., 1967 [7 Nov., 1966], No. 50562/67. Heading H3Q. A tuned circuit operable in a plurality of frequency bands comprises a combination of reactances and capacitance diodes, the frequency band being altered by forward biasing some of the diodes and thereby short-circuiting the associated reactances. In Fig. 1, with the switch 14 as shown diode D2 is forward biased by the voltage UB thereby short-circuiting inductance 2; the resonant circuit then comprises the inductance 1 with the capacitance of the reverse-biased diode D1 and the optional trimmer capacity 3. With the switch 14 in its other position the diode D1 conducts to connect the inductances 1 and 2 in parallel, and the capacitance is provided by the reversebiased diode D2 and the optional trimmer capacity 4. In a modification, Fig. 2 (not shown), the two diodes are separated by a blocking capacitor (11) and bias is supplied to D1 through a choke (Dr). The circuit may be extended to cover four wavebands by including two more diodes and inductances (Fig. 4, not shown). Two circuits as in Fig. 1 may be coupled to form a filter by winding the two inductances 1 on a common core and the two inductances 2 on a further common core, Fig. 5 (not shown). Alternatively the two inductances 1 may be coupled by an inductive coupling (25, Fig. 6, not shown) so that the pass band is the same in both frequency bands. The circuit constants may be such that the L/C ratio is the same in all bands. The input to a filter circuit may be through a high-pass filter (28, Fig. 7, not shown) and a field effect transistor (27) or an amplifier having a constant slope for all frequency bands.
Patent GB-1442873-A (GB)
Title: Manufacture of laminated panels
IPC: B29C39/10
Filed: 1974-11-22
Abstract: 1442873 Laminates FRUEHAUF CORP 22 Nov 1974 [15 March 1974] 50673/74 Heading B5N A laminated panel is produced by synchronously moving forwardly and securing together a pair of spaced parallel sheets of panelling material 13, 17 and an interposed core sheet 10 having a transversely ribbed or corrugated cross-section which defines longitudinal channels, the forward movement being parallel to the longitudinal channels, severing, e.g. using saw 33, the combined sheets transversely to form individual panels, closing the forward ends of the channels moving each panel laterally to a position wherein each channel is aligned with a foam-filling lance 50 and then in a reverse longitudinal direction 38 into over-fitting relationship E with respect to the lances, moving the panel and lances together to a position of alignment F with a delivery station 70 and then injecting a foamed material or the constituents of a foamed material through the lances into the longitudinal channels while the panel is moving longitudinally in the forward direction of the lances to the delivery station. Plastics core material 10, which may be of the thermosetting type, fed from roll 12 may be heated in preheating chamber 14 and oven enclosure 34, corrugated by means of rolls 15 which may also form the core material into a lap-joint contour along the edges, and cured in unit 16. Reinforcing cords 23 may be fed into the core near one or both edges. Cover laminae 13, 17 may each comprise a double layer of fabric taken from rolls 20, 21 and 24, 25 repsectively and impregnated with resin in tanks 22 and 26. Curing and folding of the edges of the fabric over the edge flanges of the core may be effected in unit 28. Delivery station 70 may comprise belts 71, 72 fed over guides 73, 74 containing electrical resistances or gas burners to heat the panel and cure the foam.
Patent GB-1203179-A (GB)
Title: An improved method and apparatus for winding a predetermined length of film into a film cartridge
Inventor: HOOVER JAMES EUGENE
IPC: G03B21/43
Filed: 1968-10-25
Abstract: 1,203,179. Cine-film loading apparatus. GAF CORP. Oct.25, 1968 [Oct.30, 1967], No.50695/68. Headings G2A and G2E. Cine-film is inserted into a cassette having a planar film supporting plate and two centrally located raised portions by winding a predetermined length of film w about a rotatable spindle member 16, staking the trailing edge of the film to a takeup core 40, superimposing the cartridge body film supporting plate on the spindle member while concurrently lowering the latter whereby the spindle member is replaced by one of the raised portions for supporting the scroll of film, conveying the cartridge body and film to an adjustable guide plate assembly 70, and mounting the take-up core and staked film end on the other of the raised portions. The plate assembly 70 is moved downwardly and the cartridge and film assembly finally encompassed with a cartridge cover, whilst the loaded film cartridge is being removed a further length of film may be wound around the spindle. The apparatus 10 includes a flat table-top or work reference surface 12 and may be part of and mounted upon a common work plane with a film supply device, film footage counter and film punch and cutter (not shown). The spindle is driven via a belt drive by an electric motor 20 mounted beneath surface 12, the belt passing over a pulley (58) Fig. 3 (not shown) which is keyed into an elongated slot (64) of the spindle to permit the downward movement of the spindle. The take-up core 40 is mounted in a staking assembly 30 which includes a guide rail 28 and an arcuate fixture plate 32, a clutch 42 and manually operable lever 44 imposing a damping force upon the take-up core. The film may be glued, cemented, taped or  crimped to the take-up core. A lever 46, 48 is  provided for lowering the spindle, and a constant surface pressure is maintained on the winding film by a roller 84 mounted on a pivotable arm 80.
Patent GB-1167746-A (GB)
Title: Improvements relating to Control Apparatus
Inventor: DINES CHARLES EDWARD
IPC: F22B35/00
Filed: 1966-11-12
Abstract: 1,167,746. Fluid-pressure servomotor systems. ELLIOTT BROS. (LONDON) Ltd. Nov. 8, 1967 [Nov. 12, 1966], No. 50807/66. Heading G3P. A boiler plant fired with pulverized fuel has the combustion air-flow controlled in response to the ratio of air and fuel flow-rates during startup and low-load operation. During normal onload operation, however, the air-flow is controlled in response to the ratio of air and steam flowrates. As shown, during start-up, the secondary air-flow is controlled via damper 26 by a ratio regulator 23 which senses windbox pressure at 28 (which is a function of the air-flow) by means of diaphragm 29, and fuel flow-rate by means of signal 22. Signal 22 derives from relay 13 via fuel quality bias unit 21 and is in parallel with a fuel demand signal 16 fed to relay 8 to control damper 18 controlling air-flow to mill 9. Relay 8 acts to balance signal 16 with a fuel flow signal sensed at 19. Relay 13 receives a feedback signal 14, via a summator 15, which represents the sum of as many signals 16 as are fed to the summator by switches 17 associated with the switchgear of each mill. The input to relay 13 derives from controller 1 which senses steam pressure in line 3 and compares it with a set point fed from manual station 5 or programmer 6. When damper 26 is fully open and more air is required, regulator 23 produces a signal 32 which is fed to servomotor 31 to progressively open the inlet guide vanes 30 of fan 27. At a predetermined opening, limit switch 37 is actuated to unlatch relay 36 to cause solenoid 35 to bring regulator 34 into operation. This regulator now functions to add or subtract to signal 32 a quantity proportional to the ratio of the air supply as measured at 47 and the steam flow as measured at 41. The steam flow signal is modified by an excess air bias unit 44. Control action returns to regulator 23 only when boiler load falls and limit switch 38 is held closed for an interval, set by time delay relay 39, long enough to energize relay 36 to operate solenoid 35 to render regulator 34 inoperative. In the modified embodiment of Fig. 2 (not shown), the start-up and low-load control mode involves controlling the secondary air-flow by simply varying the inlet guide vanes of the fan. The on-load mode involves controlling the secondary air-flow by means of dampers (123) in each windbox. The steam-air flow ratio regulator (121) is cut in manually or in response to steam pressure. Maximum and minimum signal limiters are employed, and the action of the fuel-air flow ratio regulator (138) is modified by re-set action initiated from limit switches on the windbox dampers (123) and transmitted by a pulse generator which can be cut off during low-load control.
Patent GB-1329022-A (GB)
Title: Basic quinophthalone dyes free from sulphonic acid groups  their production and use
IPC: D06P3/76
Filed: 1970-10-27
Abstract: 1329022 Quinophthalone dyes SANDOZ Ltd 27 Oct 1970 [19 Nov 1969] 50892/70 Addition to 1324389 Heading C4P Quinophthalone dyes have the formula wherein X is S, SO 2 , O or -NR-, R is a hydrogen atom or a hydrocarbon radical which may be substituted, Y is a direct linkage or a divalent hydrocarbon radical which may be substituted and may be interrupted by hetero atoms, Z is an alkylene radical which may be substituted, A(-) is an anoin and K(+) is a group of formula wherein R 1 , R 7  and R 2  are alkyl or cycloalkyl, R 3  and R 4  are H, alkyl, cycloalkyl or acyl, R 5 , R 6 , R 8 and R 10  are hydrocarbon radicals and R 9  is amino or hydrocarbon, the alkyl, cycloalkyl, amino and hydrocarbon radicals being substituted or the radicals R 1  and R 2 , R 1  and R 3 , R 2  and R 4 , R 5  and R 6  or R 5 , R 6  and R; may together with the nitrogen atoms to which they are attached amino and hydrocarbon radicals being optionally substituted or the radicals R 1  and R 2 , R 1 and R 3 , R 2  and R 4 , R 5  and R 6  or R 5 , R 6  and R 7  may together with the nitrogen atoms to which they are attached complete heterocyclic nuclei e.g. a pyridine nucleus and the group Z, together with the nitrogen atom to which it is attached completes a heterocyclic nucleus. The dyes are prepared by quaternizing compounds of the formulae with an appropriate quaternizing agent. The dyes may also be prepared by methods analogous to those described in Specification 1,324,389. 4 - (2 - Chloroethylmercapto)- 3 - hydroxy - quinophthalone is prepared by reacting 4 - bromo - 3 - hydroxyquinophthalone with 2-mercapaoethanol and treating the product with thionylchloride.