baber/WOPTO huggingface dataset:
Patent GB-1165148-A (GB)
Title: An Apparatus for Controlling Supply of Protective Gas to an Electrode of a High-Frequency Surgical Coagulating Instrument
IPC: A61B18/00
Filed: 1966-12-23
Abstract: 1,165,148. Cutting electrodes. O. H. DRAGER [trading as DRAGERWERK, HEINR. & BERNH. DRAGER]. 23 Dec., 1966 [23 Dec., 1965]. No. 57803]66. Heading A5R. A control arrangement for the supply of gas to a high frequency cutting electrode 11 includes an electrical or pneumatic switch 6, 12 responsive to pressure in a gas supply duct to prevent energisation of the high frequency circuit unless the gas reaching the electrode is above a predetermined pressure. Gas, eJg. nitrogen, is .supplied to the electrode via a pressure .regulator 2, a large volume vessel 3, an electromagnetic valve 4, a connecting duct 14 .switches 6, 12 and 7, 13 and a duct 9 and a throttle 10 provided in the electrode, a detachable connection 8 connecting the ducts 14 and 9. Pneumatic devices 6, 7 hold the switch contacts 12, 13 closed unless the pressure in the connecting duct 14 is below' a predetermined minium or above a predetermined maximum, respectively. Actuation of a foot or manual switch 5, (15) opens the electromagnetic valve 4, for supplying gas to the electrode and connects the high frequency generator HF to the electric supply. The switch contacts 12 remain open until the pressure in the connecting duct 14 has reached the desired operating pressure, when it closes to energise the high frequency generator. If the gas supply fails or the electrode is disconnected at the connection 8, the switch contacts 12 are opened to disconnect the generator. If the throttle 10 or the gas outlet of the electrode becomes blocked, the switch contacts 13 are opened to disconnect the generator. The large volume vessel 3 supplies gas to quickly build up the required pressure in the duct 14 in the event that use of the electrode is interrupted for a short time and thus reduces the delay between the operation of the gas supply and the generator when the switch 5 is closed again. In an alternative arrangement (Figure 2), the switch contacts 12, 13 are arranged in a circuit including a time delay switch (BS) and relays which control the energisation of the generator circuit.
Patent GB-1314700-A (GB)
Title: Method of preparing amine derivatives
Filed: 1970-12-04
Abstract: 1314700 Forminino esters; thioforminino esters; amidines CHEVRON RESEARCH CO 4 Dec 1970 [12 Dec 1969] 57832/70 Headings C2C and C2U [Also in Divisions C3 and C5] Compounds of the formula R<SP>1</SP>(N=CH.XR) n , where X is 0 or 5, R is a hydrocarbon group of 1-300 carbon atoms, n is 1-50, R<SP>1</SP> is a mono- or polyvalent hydrocarbon radical having saturated aliphatic carbon atoms attached to the nitrogen atom(s), and contains 2-300 carbon atoms when n is 1, and 5-7150 carbon atoms when n is 2-50, are prepared by reacting a non-conjugated hydrocarbon olefin of molecular weight 28 to 500,000, and having 1-50 sites of olefinic unsaturation, and which is either a mono-olefin of 2-300 carbon atoms or a polyolefin of 5-7150 carbon atoms, with HF, HCN and RXH, R being bonded to X, when oxygen, by means of an aromatic carbon atom or by an aliphatic carbon atom which is itself bonded to at least one hydrogen atom and not to an aryl group; the molar ratio of HCN to olefin being 0À5-20 : 1, the molar ratio of RXH to olefin being 0À9-10 : 1, and the molar ratio of HF to HCN being 1-10 : 1. Inert solvents may be used. Specified olefins are ethylene, propylene, butene-1, butene-2, isobutylene, octene-1, 1,5-hexadiene, 1,7-octadiene, decene-1, decene-2, octadecene-1, tripropylene, tetrapropylene, diisobutylene, triisobutylene, tetraisobutylene, polyisobutylene of from about 420 to 5000 molecular weight, polypropylene of for example from about 300 to 5000 molecular weight, allylbenzene, allylnaphthalene, 4- methylpentene-1, eicosene, triacontene, tetracontene, cyclohexene, menthene, octahydronaphthalene, cyclooctene, vinyleyclohexane, methylenecyclopentane, vinylcyclohexane, copolymer of isoprene and stryrene, and 3- cholestene. Specified compounds RXH are methanol, ethanol, propanol, isopropanol, hexanol, fusel oil alcohols, octanol, dodecanol, eicosanol, cholesterol, cyclohexanol, cyclopentanol, cyclooctanol, phenol, tert.-butylphenol, cresol, xylenol, naphthol, phenylethanol, methyl thiol, ethyl thiol, thiophenol, thionaphthol, cyclohexane thiol and benzyl thiol. The products form amidines when reacted with amines; specified amines are methylamine, diethylamine, stearylamine, abietylamine, aniline, benzylamine, ethylene diamine, triethylene tetramine, tetraethylene pentamine, piperazine, morpholine, N,N<SP>1</SP>-diethyl ethylene diamine, N-octadecyl propylene diamine, N-oleyl ethylene diamine and cholesterylamine. The amidines may be used as lubricant additives.
Patent GB-1219900-A (GB)
Title: Electrolytic production of magnesium metal
Inventor: LOVE FRANK EDGAR
IPC: C25C3/04
Filed: 1967-12-21
Abstract: 1,219,900. Electrolytic production of magnesium. NATIONAL LEAD CO. Dec.21, 1967, No.58120/67. Heading C7B. Magnesium metal and chlorine are produced by electrolysing at a temperature above the melting point of magnesium a molten salt bath comprising by weight 5 to 25% magnesium chloride and 5 to 55% lithium chloride, the balance consisting of at least one other chloride of an alkali or alkaline earth metal except for small amounts of other salts thereof and impurities, the density of the molten bath being greater than that of magnesium at temperatures in the range of 750 to 900‹C. The molten bath may include calcium, potassium and sodium chlorides and preferably its density exceed that of molten magnesium by 0.034 g/cc at an operating temperature of 750 to 900‹ C. e.g. ca 800‹ C. The molten salt bath used may alternatively consist initially of molten impure magnesium chloride salt containing minor amounts of alkali and alkaline earth metal chlorides including lithium chloride and other salts of alkali and alkaline earth metals such as sulphates, electrolyses being effected to generate chlorine and molten magnesium and periodic additions of impure magnesium chloride are made to replace the magnesium chloride consumed until the lithium chloride content is within the range of 5 to 55% by weight, whereafter upon subsequent additions of impure magnesium chloride a sufficient portion of the bath is removed to maintain the lithium chloride content within this range and the density of the bath above that of molten magnesium. A typical impure magnesium chloride used contains by weight of 81% MgCl 2 , 7% CaCl 2 , 3% each of NaCl and KC1, and 1% LiCl. The electrolysis cell employed is identical with that of Specification 1,144,866.
Patent GB-1436397-A (GB)
Title: Beverage infusion device
IPC: B65D81/00
Filed: 1973-12-14
Abstract: 1436397 Beverage infusion device R RODRIGUES-ELY 14 Dec 1973 [22 Dec 1972] 58157/73 Heading A4E [Also in  Division B8] A beverage infusion device has a float 1 proportioned to cover a major portion of water surface in a drinking vessel when floating therein, and a foraminous bag 2 containing beverage material and secured peripherally to the lower side of the float. The float may be in the form of a circular flat disc of a non-porous and heat insulating material, e.g. foamed polystyrene; a circular member Fig. 2 (not shown) comprising an annular floatable portion (4) having inwardly and downwardly sloping sides surrounding a circular transparent disc (5) provided with small holes (5b) where the disc can be concave upwards; an annular outwardly and downwardly sloping portion (21) surmounted by a circular disc such that the annular portion floats on the surface of the water; or it may have a circular disc-like top (7) Fig. 3 (not shown) with an annular flange (8) extending from the lower side of the disc, the bag containing the beverage material being hermetically sealed inside a compartment (14) formed by the disc and the flange by means of a paper, aluminium, or plastics sealing sheet (12) which could be removed immediately prior to the use of the device. The bag may be of paper, a textile, or perforated aluminium foil. The float carries a tab or other holding means along with advertising material or directions for use on its top surface. In another embodiment, the device can comprise a closed bag secured to the float at a single point or over a line, the float being provided with a transverse fold line so that the former can be folded along the line to squeeze beverage from the bag. The float may be square, hexagonal or oval, and a float in the form of a square envelope sealed along its edges, and a reusable bag with a rim capable of being push fitted on to or into a circular flange on the underside of a float are disclosed.
Patent GB-1196719-A (GB)
Title: Improvements in or relating to Rotary Rheostats.
IPC: H01C10/32
Filed: 1968-12-06
Abstract: 1,196,719. Variable resistors. W. PREH, [trading as PREH ELEKTROFEINMECHANISCHEWERKE JAKOB PREH NACHFOLGER]. 6 Dec., 1968 [8 Dec., 1967], No. 58208/68. Heading H1S. A rotary rheostat comprises a resistance element 10 inside a rotor 16 carrying a wiper 17 which moves over the resistance element as the rotor is turned, via reduction gears 19, 20, by a spindle 5. The resistance element 6 may be a printed resistive layer 10. A collector arrangement is provided by an annular track 14. The rotor 16 is mounted on a spindle 3 and carries a spring wiper 17 which has a carbon contact 18. The toothed rim portion 19, extends over about 300 degrees around the inside periphery of the rotor. The device may be mounted by means of tapped studs 23 and the external cylindrical surface of the rotor or an additional ring 26 may act as the cord pulley for a cord operated scale pointer.
Patent GB-1377989-A (GB)
Title: Hydrocarbon resins
IPC: C08F290/00
Filed: 1971-12-17
Abstract: 1377989 Production of hydrocarbon resins NIPPON OIL CO Ltd 17 Dec 1971 [23 Dec 1970] 58868/71 Heading C3P A process for producing a hydrocarbon resin comprises thermally polymerizing cyclopentadiene, methylcyclopentadiene or a Diels Alder oligomer thereof with one or more unsaturated aromatic hydrocarbons at 200‹ to 350‹ C. in the presence of a controlled amount of an inert hydrocarbon solvent which dissolves the monomer charge. The aromatic hydrocarbon is preferably styrene, a methyl styrene and/or vinyl toluene although indene, and cracked oil fractions containing a major proportion of such aromatic compounds, may be used. The cyclopentadiene (or its derivatives specified) may also be in the form of, for example, a dimerized C 5  fraction, which has been obtained by the cracking of naphtha. The preferred monomer concentration is 10-95% by wt. Solvents specified are benzene, toluene, xylene, hexane, iso-octane, mineral spirit, solvent naphtha and kerosene. The solvent enables polymers of varying softening points to be obtained, the softening point depending upon the amount of solvent used-the more solvent the lower the softening point. In the examples, the following specified monomers were polymerized in the following specified solvents: (1) DCPD/styrene, in xylene; (2) DCPD/o-, m-, p-vinyl toluene mixture, in toluene; (3) DCPD/cracked oil C 9  fraction (includes the solvent); (4) a dimerized C 5  fraction obtained from cracked naphtha/ styrene, in xylene; (5) methyl-cyclopentadiene/ styrene, in solvent naphtha, and (6) cyclopentadiene/styrene, in iso-octane. (DCPD is dicyclopentadiene.)
Patent GB-1357830-A (GB)
Title: Gyratory crusher
IPC: B02C2/04
Filed: 1972-12-20
Abstract: 1357830 Gyratory crushers B A R B E RGREENE CO 20 Dec 1972 [27 Dec 1971] 58973/72 Heading B2A A gyratory crusher includes means to rotate the head 30 in a direction opposite to that of the eccentrics 12 and hold the head rotationally stationary relative to the concave 9. As described a hydraulic motor is fixed in a counterbore 13 of the eccentric by a mounting plate 45 and a drive shaft 41 of the motor enters a square hole in a drive plate 43 which is bolted to the head. Driving liquid is supplied via inlet ports 42 from a pressurizer chamber 15, and leaves the motor to lubricate bearings 33, 31 for the head and bearings 49 for the drive-shaft before returning to the reservoir FR at the bottom of the crusher. The eccentric shaft 8 has bearings 10, 10a lubricated via pipes 16, 17. A float switch 50 senses oil level in the reservoir FR.
Patent GB-1382194-A (GB)
Title: Adjustable device for sucking out fumes
IPC: F24F7/06
Filed: 1972-12-21
Abstract: 1382194 Removing products in industrial processes B P P NEDERMAN 21 Dec 1972 [4 Jan 1972] 59030/72 Heading F4X An adjustable assembly for removing fumes from the place where they are formed such as a welding operation, comprises a suction hood 2 connected to the casing of a suction fan 1 by flexible tubing 3 to convey away the fumes &c., and by a linkage arrangement 9, 12 disposed within said tubing and arranged so as to enable the hood to be located at any position within the scope permitted by the linkage. Fig. 2 shows, for example, alternative positions A, B and C of the hood 2.  Preferably also an elbow 7 is interposed in the suction line, and is pivotable horizontally on a suction pipe 6 of the fan casing, so enabling the assembly to pivot horizontally as indicated in plan view in Fig. 3.
Patent GB-592946-A (GB)
Abstract: 592,946. Counting-apparatus. UNION TOTALISATOR CO., Ltd., and HANDLEY, J. Nov. 1, 1944, No. 21399. [Class 106 (i)] [Also in Group XXXVIII] In an aggregator in which the denomination spindles 18, 19, Fig.1A, are urged to rotate through slipping clutches 25 or equivalent mechanism and transfer to a higher denomination is carried out by an escapement on the higher denomination which is actuated by a lower denomination, two escapement levers or pawls 53, 54 are provided for each escapement wheel 31, 32 one lever or pawl being held in readiness to check the escapement wheel when released by the other lever or pawl. The levers or pawls 53 ... 56, Fig. 4, are spring- urged into engagement with cams 49, 50 associated with the next lower denomination shaft. By this arrangement eight transfers take place during each revolution of the cam shaft, and a maximum length of time is allowed for each pawl to fall down the step in its associated cam. The ratchet wheels 31, 32, Fig. 3, may be coupled to a differential gear 58 by coiled springs 57 which speed up the movement of the ratchets during transfer.
Patent GB-1338894-A (GB)
Title: Cables and tracks for endless track vehicles incorporating  such cables
IPC: B62D55/28
Filed: 1970-12-22
Abstract: 1338894 Endless-tracks NORFIN Inc 22 Dec 1970 [5 Jan 1970 16 Nov 1970] 60851/70 Heading B7H [Also in Divisions D1-D2] The Specification discloses a cable construction (see Division D1) that has been designed for tying together the track sections of endless track vehicles. The cable is made from a plurality of fibrous rovings with at least the outer filaments of each roving coated with a cured elastomer and bonded to the elastomeric sheath surrounding adjacent rovings, the initial layer of rovings being spirally twisted together under constant tension and further layers of rovings being helically twisted about said initial layer at the same helical angle, direction and tension as the initial layer. One example of the endless track construction is illustrated in Fig. 9. A plurality of the aforesaid cables 11 are embedded in two endless elastomeric sheaths 12. The sheaths 12 are clamped between shoe plates 15 and their associated lug units 14, the lug units 14 having recesses 17, 18 to accommodate the sheaths 12. The sheaths 12 have integral projections 13 between which the lug units 14 are positioned. The projections 13 thus serve to hold the lug units 14 in their correct spaced apart settings. Each lug unit has two upstanding rails 22, Fig. 7, these rails being parallel and extending beyond the opposite faces of the lug unit. The forward end of each rail 22 is laterally offset from the opposite end of the rail so that the rails on adjacent lug units 14 can be interlocked, Fig. 3, to resist lateral forces tending to laterally displace a track section from its adjacent sections. The width of the interlocking rails 22 is dimensioned to fit in the recesses of the track rollers, idler rollers and carrier wheel of a conventional endless track vehicle, Fig. 1 (not shown). The rails on each of the lug units 14 may be provided with a stud 24, Fig. 3, and recess 23 to interlink adjacent lug units. The lug units 14 have central integral sprocket pieces 21 adapted to fit in the valleys between the sprockets of the drive sprocket of the track vehicle. In a modified construction, Fig. 3, the sprocket pieces 21 are hollow and are welded to the shoe plates 15. The lug units 14 have semicircular studs 20 that extend into the sprocket pieces 21.  Each shoe plate 15, Fig. 5, includes an integral grouser on the underside thereof extending transversely of the direction of travel of the track assembly and offset from a mid-line extending the length dimension of the shoe plate. The recesses 17, 18 have convex surfaces, Fig. 5, facing the shoe plate 15, this convex surface having a radius of curvature of an arc segment of a vehicle drive sprocket about which the endless track is to be trained thereby avoiding flexing damage to the embedded cables as they travel around the drive sprocket.
Patent GB-1302879-A (GB)
IPC: A61B3/113
Filed: 1969-12-16
Abstract: 1302879 Eye-examining apparatus A G ORSZAG 16 Dec 1969 [19 Dec 1968] 61330/69 Heading G2J To determine the optical axis of the eye, light from a source is reflected from a surface attached to the front-face of the eye, or from the front-face itself (the cornea) or from the retina. The axis is determined by observing the position of the reflected image, for example by a television camera. The surface attacked to the eye may be a contact lens having a plane reflection facet. To relate the position of the optical axis to the head of the observer, the optical system is attached to a helmet worn by the observer, the position of which may be determined optically or by mechanical pick-ups. In the case where the incident light is reflected from the retina, the eye lens forms an image at the infinity of the source radiation which is re-imaged at the detector. Non- visible radiation is employed to prevent dazzling the observer. The image is formed of blood vessel groups at the retina and the image position is determined by correlation with a photograph. Additionally, the excitation of the fluorescent areas of the retina may be used to form an external image.
Patent GB-641152-A (GB)
Abstract: 641,152. Distribution boards; mounting terminals. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Aug. 24, 1948, No. 22314. [Class 38 (i)] A tagboard, Fig. 5, for mounting radio and like components comprises a metal frame F provided with spaces for accommodating said components and having a large number of holes H in which partly metallized ceramic insulators I are fitted, e.g. by soldering, each insulator having a connector tag T soldered or otherwise secured therein, to which the components are secured. In the embodiment shown, the frame is built up from angle-section strips F1, F2 eyeletted or otherwise fixed together, but it may be stamped out in one piece (Fig. 6, not shown). Each insulator I, Fig. 4, is of tubular form and is metallized at IM where portions of different external diameter join, for soldering to the frame. The connector tag T is soldered at S.
Patent GB-680991-A (GB)
Abstract: 680,991. Discharge lamps. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 16, 1951 [July 19, 1950], No. 16800/51.' Class 39(i) A glow discharge tube in which the length of the discharge indicates the current strength has its cathode and anode in the form of parallel wires 2, 3. Opposite the free end of cathode 2 is an auxiliary wire starting anode 5 carrying a loop 7. By the symmetrical construction shown, each wire may act as either cathode or anode. The wires may be of molybdenum, of which the tube walls are also coated with a visible layer.
Patent GB-697460-A (GB)
Abstract: 697,460. Automatic humidity control systems. WATFORD ELECTRIC & MANUFACTURING CO., Ltd. May 1, 1951 [June 16, 1950], No. 15137/50. Class 38 (iv). [Also in Group XL (c)] In an automatic humidity control system, an A.C. signal (derived from a bridge having as one arm a resistor which varies with humidity) is applied to unbalance a push-pull thermionic relay circuit controlling a reversible servomotor operating a steam admission valve. The A.C. signal is applied at 30, 31 to the grid/ cathode circuits of a double triode 18 which controls the potentials across resistors 13, 14 and 19, 20 respectively. Since these potentials are obtained from the phase opposed windings 10, 11, the normally equal and opposite and hence in the absence of a signal from the bridge circuit there is no potential across the winding 24 of a contact galvanometer which controls the reversible motor 32. Upon unbalance, the motor actuates the steam admission valve 33 to control the humidity, and also actuates the slider 34 of the potentiometer which constitutes resistors 14, 20 so as to rebalance the system.
Patent GB-2000237-A (GB)
Title: Improvements in servo booster assemblies
IPC: B60T13/14
Filed: 1978-06-12
Abstract: Servo boosters for vehicle hydraulic braking systems are described which incorporate a novel arrangement for providing an increasing reaction force on the input member in response to an increasing output force. In the novel arrangement a first thrust assembly 20 is interposed between the input member 22 and the output member 23, and a second thrust assembly 21 is interposed between the movable wall 4 of the booster, which may be a diaphragm or a piston, and the output member 23. The thrust assemblies 20, 21 each generally consist of two rotatable parallel plates 26, 27, 35 having inclined ramp surfaces on opposed faces co-operating with balls 28 or rollers located between the plates. In the constructions disclosed a single plate 27 is common to both thrust assemblies. Corresponding plates of the two thrust assemblies are either keyed together or integral. Axial forces between the members generate torques in the thrust assemblies and since the torques must balance each other as a result of the connections between the plates a fixed relationship is maintained between the input and output forces and the force exerted by the movable wall. The rotatable assembly may actuate a boost control valve. <IMAGE>
Patent GB-2001187-A (GB)
Title: Electronic watch with mechanical display
IPC: G04C9/00
Filed: 1978-06-13
Abstract: An electronic watch with mechanical display is more easily altered or corrected by sharing the display driving tests among a plurality of duel rotation sense motors. Such an arrangement enables practicable obtaining of a perpetual calendar in such a watch. A first stepping motor drives the seconds and minutes displays Figure 1, and the second stepping motor drives the hours and calendar display. Drive signals for the motors are derived by respective frequency dividers from a crystal controlled oscillator. When setting, a selector 8 is operated to select the unit to be corrected and in response to operation of a switch 9 or 10 the appropriate motor is driven forward or backward at a slow or fast rate. Memory circuits enable automatic adjustment for the number of days in the current month. <IMAGE>
Patent GB-2005452-A (GB)
Title: Manually operated central member for record changer
IPC: G11B19/22
Filed: 1978-07-04
Abstract: An automatic record changer mechanism, the combination includes, a rotatable turntable, a control member which is manually movable between an off position, a reject position and an on position and which is also movable to a repeat play position which is different from the reject and said on and off positions, and means operative when the said member is in the repeat play position for repeatedly playing a record on the turntable.