baber/WOPTO huggingface dataset:
Patent GB-654266-A (GB)
Title: Improvements in mordants for photographic processes
IPC: G03C7/25
Filed: 1947-12-31
Abstract: 654,266. Photographic plates and films. KODAK, Ltd. Dec. 31, 1947, Nos. 35297 and 35298. Convention dates, Feb. 7, 1946, and Dec. 31, 1946. [Class 98 (ii)] A support is coated with a layer of a waterpermeable colloidal binder containing as mordant for a soluble acid dye a quaternary salt of a polyvinyl substituted azine, the word azine being defined as a six-membered heterocyclic organic compound containing a ring nitrogen atom, and which may have a further ring or rings condensed with the heterocyclic ring ; in a modification the mordant may be a quaternary salt of 2-methylvinylbenzthiazole polymer, and these vinyl substituted compounds may contain other substituents such as alkyl groups. 2-Vinylpyridine polymer metho-p-toluenesulphonate, 2-vinyl polymer etho-ethyl sulphate and 4-vinylpyridine polymer metho-p-toluene sulphonate, for preparation of which see Specifications 654,267 and 654,268, [both in Group IV (a)], are particularly useful in the invention, and vinylquinoline and vinylacridine derivatives may be used. In an imbibition process a soluble acid dyestuff may be transferred from a tanned gelatine relief to a blank incorporating the polymers of the invention. In an example of a multilayer element a gelatino layer containing 2-vinylpyridine polymer metho-p-toluenesulphonate and the dyestuff 4-(3-ethyl-2(3)- benzoxazolylidene) - ethylidene - 3 - methyl - 1- (p - sulphophenyl) - 5 - pyrozolone in the form of its sodium salt is placed as usual beneath a blue-sensitive and above green-sensitive and red-sensitive silver halide layers to constitute a filter layer which is bleachable in development.
Patent GB-953709-A (GB)
Title: Improvements in or relating to sanitary towels
Inventor: EICHMANN FRIEDRICH
IPC: D04H1/4218
Filed: 1960-10-14
Abstract: A sanitary towel has an absorbent member comprising hydrophilic absorbent fibres mixed with hydrophobic fibres which are capable of mechanically supporting the fibre body when the latter is subjected to the action of, and absorbs, liquid.  The absorbent fibres may be of cellulose and the hydrophobic fibres of glass wool, synthetic resin such as polyvinyl chloride, or water repellent cellulose.  The fibres may be bonded together by adhesives, or by bonding agents which may be activated by condensation, polymerization of drying, or may interlock in consequence of their curvature or relative length. Absorptive materials such as active carbon or gels may be included in the fibre mixture or incorporated in the hydrophobic fibres.ALSO:An absorbent member for a sanitary towel comprises hydrophilic absorbent fibres mixed with hydrophobic fibres which are capable of mechanically supporting the fibre body when the latter is subjected to the action of, and absorbs, liquid.  The absorbent fibres may be of cellulose and the hydrophobic fibres of glass wool, synthetic resin such as polyvinyl chloride, or water repellent cellulose.  The fibres may be bonded together by adhesives, or by bonding agents which may be activated by condensation, polymerization or drying, or may interlock in consequence of their curvature or relative length. Absorptive materials such as active carbon or gels may be included in the fibre mixture or incorporated in the hydrophobic fibres.
Patent GB-1474983-A (GB)
Title: Coating compositions
IPC: A01N43/80
Filed: 1974-08-12
Abstract: 1474983 Stabilizing mildewcides in paints ROHM & HAAS CO 12 Aug 1974 [20 Aug 1973] 35369/74 Heading C3P [Also in Division A5] A 3-isothiazolone mildew-controller is stabilized against chemical decomposition due to high pH in latex paints by the addition of formaldehyde or a suitable formaldehyde releasing substance such as a hexamethylene tetramine salt.
Patent GB-301747-A (GB)
Title: Improvements in or relating to steam generators
IPC: F22B1/16
Filed: 1928-12-03
Abstract: 301,747. Chome, M. E. Dec. 3, 1927, [Convention date]. Heating by heated l i q u i d s ; feedwater, supplying. - Steam is generated at constant pressure in a boiler completely submerged in liquid in an outer container which also encloses a feed-water heater supplied from an external tank. Water is supplied through a valve 7<1> when the pressure within the tank 4 exceeds that of the atmosphere only by a certain amount which is governed by a spring 34; the valve stem carries a second valve 8<1> which opens the tank to the atmosphere when the valve 7<1> is raised. The tank communicates with the feed-water heater 3 through pipes with valves 11', 12' which are closed by a float 19 and its connections 20, 22, 26 when the level L, is reached, and opened when the level falls to L2 ; the valves are also closed by a cam 27 on a bellcrank lever 29 when a float 30 in the boiler 2 lifts a valve 14<1> to cut off the hot feed. Should the level in the feed-heater fall below L2, the valve 14<1> is closed by a weighted float 32 if the boiler is not full. Liquid with a comparatively high boiling point may be used in the outer container 1, which is open to the atmosphere, and a thermostatic control may be adopted. In a modification, a system of hand-operated valves may be used.
Patent GB-997919-A (GB)
Title: Method of conveying a glass sheet
IPC: C03B23/035
Filed: 1962-09-19
Abstract: <PICT:0997919/C1/1> <PICT:0997919/C1/2> <PICT:0997919/C1/3> To prevent deformation of a glass sheet being supported and conveyed upon spaced, rotatable conveying elements, the sheet is bowed convexly so that contact between the sheet and the conveying elements is maintained substantially along the edges only of the sheet, the bow being subsequently removed.  As shown, a glass sheet is supported on rollers 20 for passage through a furnace 12 and is then tempered by air jets at a station 16. The lehr 12 has several preheat sections 52 and a few intense heat sections 54, with the wire heating elements secured above and below in refractory elements 40, 42 and each separately controllable to give considerably higher temperatures above in the preheat sections 52, the temperature below then being raised in the sections 54 but with enough difference to maintain the glass sheet bowed. At station 16, air under pressure from blowers 62, 64 is passed to plenum chambers 58 and 60 above and below the glass sheet, each chamber being controlled by a valve 78 and the air flow from below being greater to remove the bow from the glass sheet.  To prevent lifting of the sheet from the rollers 20, lightweight wheels 82, supported by arms 84 pivoted at 86 to the chambers 58, rest on the upper surface of the sheet, the wheels being of temperature resistant material such as moulded fibre glass.  The air flow from chambers 58, 60 is through staggered parallel slots 80. Specification 997,920 is referred to.
Patent GB-406275-A (GB)
Title: Improvements relating to alternating current dynamo electric machines
IPC: H02K47/24
Filed: 1932-05-20
Abstract: 406,275. Rotary transformers ; supply systems for heating arcs. FEKETE, A. F., 43, Steglitzerstrasse, Berlin. May 20, 1932, No. 35640/33. Divided on 403,706. [Classes 35 and 38 (iv).] A condenser and transformer winding series connected thereto are connected across each pair of three phase terminals of a phase and frequency changer which converts three phase to single phase current or vice versa whilst the single phase side of the machine is connected in series with or across a winding on said single phase transformer. As shown, the transformer secondary winding sections 12, 13, 14 and the condenser sections 15, 16, 17 form a delta group across the terminals 4, 5, 6 of the frequency changer 3, the single phase terminals of which supply a welding load and are connected to the transformer primary winding 11. Specification 403,706 is referred to.
Patent GB-1007773-A (GB)
IPC: C02F1/76
Filed: 1961-10-03
Abstract: 1,007,773. Pressure gauges. H. LANG. Oct. 3, 1961 [Oct. 3, 1960; March 22, 1961], No. 35667/61. Heading G1L. [Also in Divisions B1, B5 and F1 In an apparatus in which an additive contained in a flexible bag 177 is supplied to liquid flowing on a conduit 161 by the pressure drop across a constriction 162,(see Divisions B1 and B5) the bag when empty blocks the outflow to pipe 167 causing a slight increase of pressure across indicator 171, depressing diaphragm 173 so that is is visible in window 180; the diaphragm may be coloured. A modified pressure indicator 171<SP>1</SP>, Fig. 12, has a transparent body 181 and a diaphragm 183 having a resultant portion in which is vested an indicating member 184; the diaphragm and indicating member have contrasting colours to give a visual signal and there are also electrical contacts 192,193.
Patent GB-1109177-A (GB)
Title: Improvements in or relating to hairspring supporting collets
Inventor: BOULT CECIL LESLIE
IPC: G04B17/34
Filed: 1964-09-01
Abstract: 1,109,177. Clocks and watches. ANGLOCELTIC WATCH CO. Ltd. Aug. 20, 1965 [Sept. 1, 1964; Dec. 10, 1964J, Nos.35730/64 and 50277/64. Heading G3T. A hairspring collet comprises a plate-like member 21 drilled at 36 for assembly on a balance staff, and having at least three projecting portions 22, 23, 24 each formed with a wall at right angles to the plane of the collet and against which the hairspring 30 is positioned. The walls are disposed so that they lie substantially on one turn of a spiral centred on the axis 26 of the hole. The spring is secured to the walls by adhesive. The walls are concentric about an offset axis 26 and are made by recessing the collet. In other forms, a triangular collet is recessed edgewise at the apices the recesses are closed to grip the spring, Figs. and 2 (not shown). Or shoulders are formed or the periphery is shaped at three positions, Figs. 5 and 6 (not shown). Or concentric channels are made of which the outer ones house the spring and inner ones are filled with adhesive which adheres to the inner surface of the coil Figs. 7 and 8 (not shown). The collets may be of metal or injection moulded plastics.
Patent GB-468669-A (GB)
Title: Improvements in and relating to the production of cellulose from vegetable raw material
IPC: D21C3/02
Filed: 1936-12-30
Abstract: A method of preparing cellulose from vegetable raw material employs only a saturated lime solution containing no solid phase or only very small quantities thereof insufficient to cause deposition on the material being treated, the solution being circulated through the fibrous material and being maintained saturated by continuous addition of lime corresponding to its consumption.  A suitable content of lime in the circulating liquor p  is 2,8 grams/litre, 1,4 grams of which are in solution and 1,4 grams in suspension.  The upper limit for the lime content lies at about 4,2 grams/litre.  Lime necessary for replacement is preferably added by a vessel of known type incorporated in the liquor circuit.
Patent GB-1199431-A (GB)
Title: Improvements in Valve Operating Mechanism.
IPC: F16K31/04
Filed: 1967-08-04
Abstract: 1,199,431. Valves. E.B.V. SYSTEMS Inc. 4 Aug., 1967 [8 Aug., 1966], No. 35866/67. Heading F2V. A mechanism for operating a rotary valve (24, Fig. 1, not shown) having an operating stem 32, comprises a drum 42 which is rotatable by a constant torque spring 90 in one direction to effect closing of the valve, and is rotatable in the opposite direction by a motor-driven gear unit 36 to effect opening of the valve, the drum being releasably holdable in a position corresponding to the open state of the valve and being arranged to act on the valve stem through a lost-motion coupling. Upon the de-energization of a solenoid (142, Figs. 1 and 2, not shown), as by opening a switch or due to power failure, a latch arm 130, carrying at its free end a roll 132, is caused to move into the plane of the drawing, as seen in Fig. 5, thereby moving roll 132 out of engagement with an abutment 144 provided on a gate member 106 pivoted at 120. The gate member is therefore caused, by a spring 152, to rotate in the clockwise direction, to the dotted line position shown, so permitting a roll 102, provided on a latch lever 100 which is pivoted at 94 to the drum, to move out of a notch 104 formed on the gate member, this serving to release the drum which is then free to rotate in the clockwise direction. Such rotation causes one pair of opposed lugs 80, provided on the drum, to engage, after a predetermined angle of rotation, two lugs 76 depending downwardly from a member secured to the valve stem, the degree of rotation being limited by a fixed stopmember 62. To reset the valve, the solenoid is re-energized, and power is supplied to a motor unit (188, Fig. 1), which unit drives the gear 36 in a counterclockwise direction. A cam roll 184 on the gear, engages a cam surface 182 on the gate so bring- ing it back to its normal position, shown in full lines. Simultaneously the latch arm 130 is moved upwardly to engage and thereby retain the gate in this position. Further rotation of the gear serves to rotate the drum counterclockwise, this being effected by engagement of a lug 176 on to gear with a roll 170 on the latch lever, until the valve is opened, at which stage the roll 102, which has been moving along an arcuate surface 224 on the gate 106, drops into the notch 104 and so serves to hold the drum in its original position. Disposed on the uppermost end of the valve stem in a cam (192, Fig. 1), which carries a circumferential series of lobes adapted to successively actuate three microswitches 194, 196 and 198, and hence three corresponding warning lights, these lights giving indication as to whether the valve is fully open, not closed, or fully closed. In an alternative embodiment (Figs. 7 to 10, not shown), the mechanism is modified to permit resetting of the valve in two separate steps, first recocking of the drum and then returning the valve to open position.
Patent GB-1379470-A (GB)
Title: Viscometers
IPC: G01N11/06
Filed: 1972-08-01
Abstract: 1379470 Viscosimeters A C I OPERATIONS PTY Ltd 1 Aug 1972 35975/72 Headings G1A, G1N and G1S Electrically conductive liquid is drawn from a tank through a valve 1 and filter 2 by vacuum pipe 4 into vessel 3. When the rising liquid contacts electrical sensor 5 the vacuum is shutoff, the vessel is vented to atmosphere through pipe 4 and the liquid is allowed to flow out through orifice 8 and valve 7 so that when the  level of sensor 9 is reached a timer is activated. The timer operates until the level of sensor 10 is reached. After a set period of time air-pressure is introduced at 4 and valve 1 is closed so that the vessel 3 is emptied and the orifice 8 cleared. After a further interval, valve 1 is opened and air blows the filter 2 and valve 1 free of all liquid in preparation for another cycle. In a modification the sensors may be thermal and react to the  temperature of the liquid, and in Fig. 2 the capacitance of rings 5, 5'; 9, 9'; 10, 10' changes as the liquid level falls. In Fig. 3 a magnet 11  rests on a float 12 and induces voltage in coils 5, 9 and 10, and in Fig. 4 (not shown) radiation beam means 5', 9' and 10' are interrupted by the float 12 causing variation in signal from receivers 5, 9 and 10.
Patent GB-1106457-A (GB)
Title: Guarding of machine tools
Inventor: GUY ANTHONY ROBIN
IPC: F16P3/14
Filed: 1964-09-03
Abstract: 1,106,457. Transistor switching circuits. WILMOT BREEDEN Ltd. 28 Oct., 1965 [3 Sept., 1964], No. 36071/64. Heading H3T. [Also in Divisions F2 and G1] The circuit controls power-actuated guards for the danger zone of a power press in accordance with the positions of switches 59, 53, 49 respectively controlled by, a device such as a capacity loop or a light curtain which detects an obstruction in the danger zone, a cam indicating the position of the guards, and a cam indicating the position of the press ram. An " AND " circuit including PNP transistors 65, 70, 74 controls the potential at 76 in response to switches 53, 59, the effect of switch 59 being over-ruled when the switch 53 contacts 53c. Initially, with the guards open, switch 53 contacts 53b and switch 59 is closed. Insertion of a hand with a workpiece into the danger zone causes switch 59 to open, and withdrawal of the hand re-closes the switch. The successive opening and closing of switch 59 acts via a differentiating circuit including a capacitor 86 and a diode 85 to produce a pulse which switches the bi-stable circuit comprising transistors 77, 78 to a state in which transistor 77 is non- conductive and transistor 78 is conductive, to provide an output to an amplifier including transistors 89, 93, 97 causing energization of a solenoid 61. This initiates closure of the guards, which when fully closed initiate press operation. Also when the guards are closed, switch 53 contacts 53c. At the end of the press ram working stroke the switch 49 is momentarily closed to reset the bi-stable circuit to its initial state, de-energizing solenoid 61. At the end of the press-ram return stroke, the guards are released, and open, allowing switch 53 to return to 53b. A capacitor 66 in the " AND " circuit causes a time delay between the return of switch 53 to contact 53b and the change of transistor 65 to its conductive state, which allows switch 59 to become effective to initiate a new cycle.
Patent GB-1348215-A (GB)
Title: Process for determining hydrocarbon maturity using electron spin resonance
IPC: G01V3/00
Filed: 1972-08-02
Abstract: 1348215 ESR well logging CONTINENTAL OIL CO 2 Aug 1972 [25 Aug 1971] 36138/72 Heading G1N The nature of hydrocarbons likely to be present in subterrarean strata is investigated by determining the thermal history of the strata using electron spin resonance techniques. It is known that the thermal history provides an indication of the nature of hydrocarbons, e.g. natural gas or petroleum, likely to be present; the invention provides a method of measuring the thermal history. Electron spin resonance (ESR) measurements are initially made in strata having a known thermal history so as to calibrate the ESR measurements. It is stated that once the calibration has been established it is universal, i.e. may be used on samples taken from other sites, provided the samples are chemically treated to removed carbonates and silicates. Three ESR parameters may be used to determine thermal histories. The "g" value, which depends on spectral line position, the W value which depends on the line width, and the Ng value which is the spin concentration per gram of organic carbon. The "g" value is related to the conventional line position parameter g by the equation "g" = (g - 2) x 10<SP>4</SP>. A calibration curve of "g" against known maximum temperatures determined by electric log measurements is shown in Fig.1; Figs.2-6 (not shown) give similar curves for other sites and for W and Ng values. Once such a curve is established it is used to determine the maximum temperature of samples taken from various depths at the site to be investigated. The resulting data is plotted to give the vertical temperature gradient at the site so that the hydrocarbons likely to be present at any depth can be found by extrapolation. Sample preparations: an initial sample of some 4-8 grams is required, to produce at least 1% kerogenous material in the final sample. The sample is pulverized and then carbonates are removed with mineral acid, e.g. HCL. The acid is then decanted and the sample is washed with water, after which silicates are removed with 52 weight per cent HF solution, thus concentration avoiding undue heating. The solid particles left are separated by centrifuging, and are water washed. Further HF reaction is then carried out until no more gas evolution occurs; the sample is again centrifuged, and is water and acetone washed. Finally it is reground to 60 mesh size and the ESR measurements are made.
Patent GB-1190126-A (GB)
Title: Connectors
IPC: B65D63/10
Filed: 1968-07-30
Abstract: 1,190,126. Clips; strap fastenings. DENNISON MFG. CO. Ltd. 30 July, 1968 [18 April, 1968], No. 36329/68. Headings E2A and E2B. A connector comprises a resilient filament 1, and socket 2 with finger 6, and head 3 on one end of the filament to snap engage in the socket and a protuberance 5 on the other end of the filament which is expansible to anchor the connector in an opening in an article. The end of the protuberance which may be cupped is swayed over the edge of the opening. The filament may be made of thermoplastics material.
Patent GB-928596-A (GB)
Title: Improved electrical connectors
Inventor: GARIMALDI UBALDO IGNACIO
IPC: H01R13/59
Filed: 1959-10-27
Abstract: 928,596. Two-part couplings. U. I. GARIMALDI, and E. L. DUPIN. Oct. 25, 1960 [Oct. 27, 1959], No. 36446/59. Class 38 (1). A connector such as a plug 1 comprises an insulating body 2 carrying contacts 4 ending in contact plates 5 located in a chamber 9 and facing a screw-threaded opening 7 through which pass insulated leads 16, 16<SP>1</SP>, the stripped ends 17, 17<SP>1</SP> of which are maintained in contact with the plates 5 by a tubular clamping screw 11 engaging the opening 7. The insulated parts of the leads are also clamped against a conical separator 10. A shoulder 13 on the clamping screw may have small downwardly-directed projections adapted to enter corresponding recesses on the upper surface of the body 2 (Fig. 3, not shown) to prevent loosening of the screw by vibration. The thread on the clamping screw may be replaced by bayonet pins engaging L-shaped slots in opening 7. Also the screw may be of metal with at least the inner end sheathed in insulating material. The Provisional Specification describes several examples of plugs, sockets and a lampholder in which the cable leads are guided into the tubular ends of contacts, the cable insulation then being gripped by a clamping screw similar to the screw 11 described above. A further construction shows a cable lead engaging the pointed end of a solid portion of a socket contact housed in an insulating body. The lampholder, Fig. 7, is of the Edison-screw type and comprises an insulating body 402, a side contact 426 and a centre contact 427. The bare cable end portions fit into tubular ends 405, 405<SP>1</SP> of the contacts 404, 404<SP>1</SP>, and the cable insulation is gripped by a clamping screw 412.