baber/WOPTO huggingface dataset:
Patent GB-993597-A (GB)
Title: Improvements in or relating to silicone rubber stocks and silicone rubbers
IPC: C08L83/04
Filed: 1963-07-01
Abstract: A silicone rubber stock is made by (A) mixing and heating in a suitable solvent at a temperature and for a time sufficient to produce a heatcurable stock, (1) 100 pts. (by weight) of an essentially diorgano-siloxane polymer of at least 200 Si atoms per molecule and consisting of RnSiO 4-n/s units, in which each R is a methyl vinyl or phenyl radical and n has an average value in the polymer of 1.98 to 2.05, there being an average of at least 0.75 methyl radicals and not more than 0.15 vinyl radicals per Si atom, not more than 50 mol. per cent of the units being (C6H5)2SiO units, and said siloxane having an average of at least 2 Si-bonded -OH radicals per molecule, (2) 40 to 175 pts. of (a) a siloxane polymer of the formula (C6H5)xR1ySiO 4-x-y/2 , wherein each R1 is a monovalent hydrocarbon radical, x has a value of 0.65 to 1.3, y is less than 0.4 and x+y has a value of 0.95 to 1.3, the siloxane comprising at least 60 mol. per cent of C6H5SiO3/2 units and containing an average of at least 2 -OM radicals per molecule, wherein M is H, an alkali metal or a quarternary ammonium radical, or (b) at least one silanol of the formula (C6H5)aR1bSi(OH)4-a-b, wherein a is 0, 1 or 2, b is 0, 1 or 2 and a+b is at least 1, the average C6H5/Si ratio being from 0.65: 1 to 1.3: 1, the average value of b being less than 0.4 and that of a+b being from 1 to 1.3, and at least 60 mol. per cent of the silanol being of the formula C6H5Si(OH)3, and (3) a Si-bonded hydroxyl condensation catalyst, the concentration of the solids in the solvent being such that no appreciable gelation occurs during step (A), and (B) removing the solvent from the reaction product, there being sufficient agitation during this step to keep the product homogeneous.  The products of this process are block copolymers. In a preferred embodiment, in which an aromatic solvent and an alkali metal hydroxide catalyst are used, by-products produced during refluxing in step (A) are removed, and the catalyst is deactivated prior to removal of solvent in step (B).  Numerous examples are given of condensation catalysts including HCl, H2SO4; hydroxides of K, Na, Co and Rb; oxides of Ba, Ca and Sr; alkali metal silanolates and siloxanolates; phenoxide derivatives as described in Specification 973,385; quaternary ammonium hydroxides and organosilicon salts thereof; aliphatic aldehyde-primary amine condensates; aromatic sulphonic acids; alkali metal glycol monoborates; organic isocyanates free of active H, as described in Specification 836,954; certain amine salts as described in Specification 895,091; b -aminobutyric acids and lactams thereof as described in Specification 864,252; and certain metal carboxylates. The rubber stocks thus produced can be compounded with the usual fillers and additives, and heat-cured with organic peroxides; cyanoguanidine may be used in addition to the peroxides as curing catalyst as disclosed in Specification 959,525.  Examples are given.
Patent GB-820964-A (GB)
Title: A new or improved method and device for checking the positions of a succession of rod-like articles
IPC: B65B19/06
Filed: 1956-08-28
Abstract: 820,964. Photo-electric positioning apparatus. KÍRBER, K. Aug. 28, 1956 [Nov. 23, 1955], No. 26247/56. Class 40 (3). A method of checking the position of cigarettes or other rod-like articles wherein two points of each cigarette are examined photo-electrically and a difference signal produced which controls inverting,' reversing or ejecting mechanisms. Light from a source 1 is reflected from the brand marking 5 and another part 4 of a cigarette 6 on to photo-cells, selenium cells or phototransistors 10, 12. The currents produced are fed into a measuring bridge and the difference current used to control mechanisms which are inactive if there is a signal of one sense, reverse the cigarette if there is a signal of opposite sense or invert the cigarette about its axis if the signals are equal. A second device reverses an inverted cigarette if the marking is still at the wrong end.
Patent GB-857598-A (GB)
Title: Infra red gas analyser
Inventor: WALDUCK PHILIP WILLIAM
IPC: G01N21/37
Filed: 1956-08-28
Abstract: 857,598. Infra-red gas analysis. INFRA-RED DEVELOPMENT CO. Ltd. Nov. 27, 1957 [Aug. 28, 1956], No. 26289/56. Class 40(3). To eliminate errors due to vibration or shock, a diaphragm condenser for use in an infra-red gas analyser is provided with two diaphragms a, b arranged on opposite sides of an electrode c provided with a grid d, or between two interconnected electrodes. The extra diaphragm a has perforations in its frame to equalize the pressure on its two sides. Specifications 634,453, 727,600 and 780,734 are referred to.
Patent GB-859994-A (GB)
Title: Noise suppressor for jet propulsion engines
Inventor: GROTZ CHARLES ANDREW
IPC: F02K1/46
Filed: 1958-06-20
Abstract: 859,994. Jet-propulsion nozzles. BOEING AIRPLANE CO. June 20, 1958, No. 26364/60. Divided out of 859,993. Class 110 (3). A jet-propulsion engine having a propulsion nozzle is provided with noise suppression means comprising a plurality of stream divider elements 246 of generally plate-like form mounted on the nozzle so as to extend inwardly from the periphery of the exit thereof at spaced-apart locations therearound and disposed generally perpendicularly to the direction of gas discharge, the elements having openings 246c therein which allow a limited flow of discharge gases therethrough.for admixture with ambient air which is drawn inwardly across the downstream faces of the elements by the gas flow therebetween. The propulsion nozzle shown comprises a cylindrical duct 36 at the downstream end of which are pivoted overlapping flaps 36<SP>1</SP>a, 36<SP>1</SP>b, which may be swung inwardly or outwardly to vary the area of the nozzle outlet. The stream divider elements 246, which are of trapezoidal form with rearwardly-projecting flanges 246a, 246b, are pivotally mounted at the downstream edges of the pivoted flaps 36<SP>1</SP>a, the flaps 246 being shown in their projected positions and the flaps 36<SP>1</SP>a, 36<SP>1</SP>b in their maximum outlet area positions. The divider elements 246 are formed with arms 54 which are connected by means of links 56 and 28 to an actuating-device 58, operation of which moves the links 28 and 56 rearwardly from the position shown, so causing the divider element 246 to swing forwardly and outwardly into a retracted position lying against the inner face of the pivoted flap 36<SP>1</SP>a. Continued rearward movement of the link 56 causes the cam 561 thereon to engage the projection 60 on the outside surface of the flap 36<SP>1</SP>a which is thereby caused to swing inwardly about its pivotal connection with the duct 36. The flaps 36<SP>1</SP>b are caused to move simultaneously with the flaps 36<SP>1</SP>a by means of retainer elements 35. The discharge opening of the nozzle is arranged to be approximately the same area whether the divider elements 246 are extended or retracted.
Patent GB-464864-A (GB)
Title: Improvements in and relating to the production of road and other surfaces, building materials, blocks, slabs or other articles
IPC: C09K17/48
Filed: 1935-09-24
Abstract: Road surfaces and articles such as tiles and slabs for building purposes are made by mixing together a drying or semi-drying oil, a drier and a hard, mineral or rock-like, water-insoluble filler of a granular form substantially free from powdery or absorbent materials, and heating the mixture within the range 150 to 220 DEG  C. The mixture may contain also phthalic anhydride-glycerol, phenol-formaldehyde and cresol-aldehyde synthetic resins singly or all three together, diluents such as turpentine, white spirit, methylated spirit, acetone and coal-tar hydrocarbons, non-drying oils, colouring matter and, for pedestrian crossings and the like, a luminous material, e.g. phosphorescent zinc sulphide.  The granular material is readily separable into individual particles and retained on a 150-mesh sieve.  The filler may be volcanic stones, rocks, sandstone, quartz, carborundum, glass, glass frit or sand.  The oil may be linseed or tung (as boiled, blown, or stand oils) or sunflower, soya or foots, and may be present as oil varnishes and oil lacquers.  Specifications 229,400, [Class 20 (iv)], 256,565, 307,448, [both in Class 22], and 437,808, [Group X], are referred to.ALSO:Road surfaces and articles such as tiles and slabs for building purposes are made by mixing together a drying or semi-drying oil, a drier and a hard, mineral or rock-like water-insoluble filler of a granular form substantially free from powdery or absorbent materials, and heating the mixture within the range 150 to 220 DEG  C. The granular material is readily separable into individual particles and retained on a 150-mesh sieve.  The filler may be volcanic stones, rocks, sand-stone, quartz, carborundum, glass, glass frit or sand.  The oil may be linseed or tung (as boiled blown or stand oils) or sunflower, soya or foots, and may be present as oil varnishes and oil lacquers. The mixture may contain also non-drying oils in small quantities, phthalic anhydride-glycerol, phenol-formaldehyde and cresolaldehyde synthetic resins, diluents such as turpentine, white spirit, methylated spirit, acetone and coal-tar hydrocarbons, colouring matter and, for pedestrian crossings and the like, a luminous material, e.g. phosphorescent zinc sulphide.  Specifications 229,400, [Class 20 (iv)], 256,565, 307,448, [both in Class 22], and 437,808 are referred to.
Patent GB-242964-A (GB)
Title: Improvements in or relating to liquid feeding and measuring apparatus
IPC: G01F3/36
Filed: 1925-10-22
Abstract: 242,964. Soc. Hardoll. Nov. 14, 1924, [Convention date]. Liquid-meters.-In a liquid meter having two measuring chambers 5, 6 and a distributing slide valve 7, the valve is operated from a piston 10 by means of levers 11, 13 connected by springs 12. and by additional means which come into operation should the springs be unable to move the valve, this means consisting of a lever 15 mounted on a fixed pivot 16, connected to the lever 11, and provided with pins 17, 18 adapted to engage the lever 13.
Patent GB-1490176-A (GB)
Title: Device including a low-pressure sodium vapour discharge lamp
IPC: H05B41/00
Filed: 1976-06-25
Abstract: The light yield, which is relatively low in the case of known arrangements, is to be increased without leading to a significant reduction in the r.m.s. current through the lamp (8). The output terminals of a rectifier bridge (3, 4, 5, 6) are connected to one another, on the one hand, by a series circuit composed of a resistor (7) and a low-pressure sodium-vapour discharge lamp (8) and, on the other hand, by a capacitor (9). The lamp (8) has a U-shaped discharge tube (10) surrounded by an outer bulb (11). The discharge tube (10) contains sodium and 5.5 torrs of neon with an admixture of 1% argon. The inside of the outer bulb (11) is provided with a layer, composed of indium oxide, which reflects infrared radiation. The maximum instantaneous current density through the discharge tube (10) is below the value of S = 165 + 1.3 . (T-245)<2> mA/cm<2>. The r.m.s. current density in the discharge tube (10) is above the value of 0.8 SmA/cm<2>. <IMAGE>
Patent GB-1302809-A (GB)
IPC: F02G1/043
Filed: 1971-04-19
Abstract: 1302809 Rotary-piston machines DAIMLER BENZ AG 19 April 1971 [10 April 1970] 26631/71 Heading F1F A trochoidal-type hot-gas machine e.g. an engine , operates theoretically on the Stirling cycle and has pistons 4 coupled so that the upper one drives the lower one 90 degrees in advance thereof. Pipes 14a, 14b and 15a, 15b inter-  connect corresponding inlets 9a, 9b and outlets 10a, 10b and pass through heat exchangers 11a, 11b, 12a, 12b, 13a, 13b serving as heaters, recuperators and coolers, respectively, the heatexchangers 12a, 12b being of cross-flow type and the others of contra-flow type. In each of two separate circuits thus provided the gas is repeatedly compressed by the lower piston, heated as it flows upwardly, expanded while driving the upper piston and cooled as it flows downwardly. In a second embodiment, Fig.2 (not shown), the pipes are disposed so as to effect contra-flow through all of the heat-exchangers.
Patent GB-1157751-A (GB)
Title: Method of Reducing Periodic Noises from a Very Small Signal
IPC: H04B15/00
Filed: 1967-06-09
Abstract: 1,157,751. Correcting inductive disturbances. HITACHI Ltd. 9 June, 1967 [29 June, 19661, No. 26698/67. Heading H4R. In a signal receiver forming part of an electroencephalograph or electrocardiograph in which the information signals are subject to interference from mains or mains harmonics noise currents, the latter are substantially eliminated by removing from the transmission channel a sample at and around the frequency of the noise, subjecting the sample to a synchronous detection process and then injecting the result (modified if necessary) of the detection into the channel as a counter disturbance which eliminates the noise. The sample is obtained from the output of a main amplifier 2, passed through a filter 6 which has a pass-band centred around 50 c.p.s. and then divided into two components which are respectively in and 90 degrees out of phase with a reference mains current. The latter components are applied to diode bridge type (Fig. 4, half-wave and Fig. 8, full-wave, both not shown) synchronous detectors 7a, 7b from which, via CR filters 8a 8b, extremely narrow band signals centred on 50 c.p.s. are obtained. The latter are applied to diode (Fig. 6, not shown), transistor, Fig. 8 (not shown), or electromechanical (using bipolar motors, Fig. 9, not shown) modulators 10a, 10b whose square wave outputs are combined in a wave shaper 11 that provides an output sinusoidal signal having the same frequency and phase as and having an amplitude proportional to that of the sample. The latter output is injected into the input of the amplifier as a counter disturbance. The CR filters have a long time constant which may be reduced, as for example at each transfer from one electrode to the next in an encephalograph reading, by temporarily closing switches S in synchronism with the stepping of the electrode transfer switch in order that the different noise levels associated with the different electrodes are more rapidly compensated for. (There is a degradation of the information signals, whenever a change in the amplitude of noise occurs, due to the long time constant of the filters and it is better, from an overall point of view, to degrade the signals much more for a relatively very short period of time by shortening the time constant temporarily.) In an alternative (Fig. 10, not shown) the phase of the sample is adjusted, before and after the synchronous detector stage, so as to coincide with that of the reference mains signal whereby it becomes unnecessary to employ two such detectors which are responsive respectively to the quadrature components of the sample.
Patent GB-1279590-A (GB)
Title: Improvements in or relating to moulds
IPC: B29C44/58
Filed: 1971-04-19
Abstract: 1279590 Injection moulds SEMPERIT AG 19 April 1971 [21 April 1970] 26712/71 Heading B5A In a mould for the injection moulding of foamable material, the injection passage 2 is split longitudinally over at least a part of its length, the two parts being separable for the withdrawal of sprue therefrom, and a blind passage 3 opens into the injection passage so that injected material fills the blind passage 3 first, foams and then closes off the injection passage. The blind passage is preferably arranged at an angle α, is at least partially thermally insulated and, for thermosetting materials, has heater windings 5. The injection passage 2 is preferably angled as shown. Two, three or more blind passages may be provided, and two blind passages may be arranged opposite one another.
Patent GB-429726-A (GB)
Title: Improvements in or relating to photo-electric cells and circuit arrangements incorporating the same
IPC: H01J43/16
Filed: 1934-09-18
Abstract: 429,726. Photo-electric cells. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London. - (Assignees of Salzberg, B. ; 659, East 165th Street, New York, U.S.A.) Sept. 18, 1934, No. 26830. Convention date, Sept. 27, 1933. [Class 39 (i)] A photo-electric cell has a plate like cathode receiving light from a direction normal to its central portion, an electrode acting as a secondary cathode so arranged in the path of light as to offer minimum obstruction, and an anode accelerating electrons from the cathode so as to impinge on the secondary cathode. As shown, the cathode 13 is of semi-cylindrical shape sensitized on the concave surface, and the secondary cathode consists of a rectangular plate 15 lying in a diametral plane and surrounded by an anode in the form of a grid 19 wound around rods. A light sensitive surface may be provided on the secondary cathode 15, which is maintained at a positive potential lower than that of the anode. In a modification the secondary cathode consists of a rod surrounded by a helical anode. The Specification as open to inspection under Sect. 91, comprises also a cell in which the photo-electric cathode consists of a curved mesh, the anode is a curved grid, and the secondary electrode a curved plate, the light being incident to the convex surface of the photo-electric cathode. This subject-matter does not appear in the Specification as accepted.
Patent GB-271397-A (GB)
Title: Improvements in ships' side scuttles
IPC: B63B19/00
Filed: 1926-10-27
Abstract: 271,397. Atlas-Werke Akt.-Ges., and Schriever, L. May 19, 1926, [Convention date]. Cabin lights.-In a side scuttle provided with ventilating means, the glass holder is provided with an annular duct D which at the top is in communication with the interior of the cabin through an aperture M which is controlled by a sliding shutter N. At the bottom of the duct D, apertures E lead to a second duct which in turn is put into communication with the outside by way of apertures H. Ball valves F close the apertures E against an inrush of water. In a modification the glass holder provided with the ventilating arrangement is secured in the hinged member by a screwed ring.
Patent GB-638628-A (GB)
Title: Improvements relating to ships' gears for the loading and unloading of cargo
IPC: B66C23/60
Filed: 1946-09-09
Abstract: 638,628. Ship's derricks. SLATER, A. Sept. 9, 1946, No. 27035. Convention date, Sept. 11, 1945. [Class 78 (iv)] A derrick, Fig. 1, for loading and unloading a ship's cargo includes a mast 9a; a pair of coactive derricks 4, 7 pivotally associated with the mast ; a cargo hoisting gear 79 associated with each derrick ; power-actuated topping gear connected to each derrick to adjust the inclination thereof and comprising a cable 11 anchored to the outer end 12 of the derrick and extending through a bight span 15 to an anchorage point 16 on the mast ; a pair of flexible extensions connected to the bight span pulley 15 one of which extensions comprises a cable 18 leading to a winch 22, and mechanical locking means 28 engageable with the other flexible extension to maintain the derrick in the adjusted working inclination. Topping gear. Cable 11 is attached to the end of the derrick (e.g. 4), passes round pulley 13 on the mast 9a, passes down and round pulley 15 and is secured at 16 on the mast. The derrick is luffed from winch 22 by cable 18 attached to the pulley 15 and is secured in position by chain 27 which is attached to the same pulley and is held by pin 31, Fig. 6. Pin 31 is operated from wheel 107 through pinion 40 and rack 37 and has a longitudinal groove at its end so as to engage and hold the lower link the better. Alternatively the pin and rack may be disposed parallel but out of alignment and connected so that they move together as one. The loose end of the chain falls into a compartment below deck. Slewing gear. The end of each derrick (e.g. 4) is connected to pulley 51 and this is connected by cable 50 to pulley 52, pulley 54 and winch 58. Pulley 52 is secured by cable 60 to a point at the side of the derrick so that winch 58 slews the derrick round. Derrick-connecting gear. Additional means of varying the position of derrick 4 is obtained by means of cable 61 which is attached to the end of derrick 4 passes round pulley 62 on derrick 7 and round pulley 63 and is fixed at 64 on the derrick 7. Winch 66 pulls cable 65 which is secured to pulley 63 and luffs or slews derrick 4. Lifting tackle. Derrick 4 has a lifting hook on the end of cable 79 which is operated by winch 81. It also has lifting hook 77 at the end of cable 70 which passes round pulleys 71 and 72 and is operated by winch 75. Hook 77 is controlled in position by cable 76. Operation. Derrick 4 is secured in position over the hold 49. Derrick 7 is secured in position over the wharf. Hook 77 is lowered into the hold to lift up the cargo which, under the pull of cable 76, is transferred to the two lifting hooks of derricks 4 and 7. The two hooks, under the pull of their respective cables 79 together transfer the cargo towards the wharf, where the hook of derrick 4 is slipped off and the cargo is lowered on the hook of derrick 7.
Patent GB-1325648-A (GB)
Title: Control device for hydraulic brake system
IPC: B60T8/26
Filed: 1972-06-09
Abstract: 1325648 Fluid pressure brakes BENDIX CORP 9 June 1972 [11 June 1971] 27035/72 Heading F2F A braking pressure control device having a valve within a bore 14 connecting an inlet 16 and an outlet 22 and dividing the bore into inlet and outlet chambers 26, 28, the valve allowing rapid increase of inlet pressure to a predetermined level, then more rapid increase of outlet pressure until the pressures are equal has load responsive means in the form of a bar 62 secured to the vehicle body and pivotable about a member 64 to engage a piston 60 to vary the first predetermined level at which the valve operates.
Patent GB-454988-A (GB)
Title: Twisting machine for producing steel wire strands and cables
IPC: D07B7/02
Filed: 1935-10-01
Abstract: 454,988. Machines for making strands or cables. RATH, J., 28, Poststrasse, Lippstadt, Germany. Oct. 1, 1935, No. 27041. [Class 109] Means are provided for straightening the individual wires or strands during their passage from the supply spools 6 to the closing die 9. Each straightening - device d comprises sets of rolls ql, t<1> disposed at right angles to one another and carried by a spider 7 rotating with the flyer 4. The rolls ql are mounted upon a base plate s which is adjustable angularly with respect to the spider 7, in two planes at right angles, and are themselves adjustable with respect to the plate s at right angles to the line of travel of the wire or strand. The rolls t<1> are mounted upon an angle plate secured to the plate a. The wire or strand is guided to and from the rolls by eyes r<1>. The closing die may comprise two elements, the upper of which is held in position by a weighted lever.
Patent GB-602551-A (GB)
Title: Process for quickly drying fatty paints and other products containing siccative oils
IPC: B05D3/02
Filed: 1945-10-17
Abstract: 602,551. Drying paints. GENERAL COLOR SOC. ANON. Oct. 17, 1945, No. 27140. Convention date, April 13. [Class 34(ii)] Fatty paints containing siccative oils are dried by subjecting painted articles to infra red radiation in an atmosphere containing additional oxygen, supplied from bottles or generated in a nascent state by chemical means, or ozone.