baber/WOPTO huggingface dataset:
Patent GB-1407887-A (GB)
Title: Flow control apparatus for a centrifugal compressor
IPC: F04D27/02
Filed: 1973-05-14
Abstract: 1407887 Centrifugal compressors BARODYNE Inc 14 May 1973 22832/73 Heading F1C The inlet 60 to a centrifugal compressor comprises a sonic nozzle 63 followed by a diffuser 64, whereby excessive flow is prevented by the onset of choking. When the flow begins to decrease below a predetermined level, as sensed by, e.g. a pitot tube located in the outlet 56 of the second or later stage 40, a control 70 begins to open a valve 55 to return some of the air via a line 54 to an annular chamber 59 and thence through passages 53 into the inlet 60 at an acute angle to the flow through the inlet whereby it throttles the flow. The resultant drop in pressure counteracts the normal tendency for the compressor outlet pressure to rise as the flow decreases. When the flow has dropped to a value at which surging may occur, the valve 55 is completely opened, and substantially the whole of the flow is then recirculated from the outlet 56 via the line 54 to the inlet 60. If the compressor is used to supply air to pneumatic tools via a reservoir, the reservoir ensures continuity of supply to the tools during the recirculation. A non-return valve may be provided between the outlet 56 and the reservoir.
Patent GB-598630-A (GB)
Title: Guide members for band saw blades
IPC: B27B13/10
Filed: 1945-09-06
Abstract: 598,630. Band saws. SMITH, R. Sept. 6, 1945, No. 22958. [Class 145 (ii)] In a guide member for a band saw blade of the type wherein the back edge of the blade C is supported by a rotatable disc K, Fig. 2, the disc K is connected to or formed integral with a dished housing L, holding the outer race M of ball bearings, the inner race H being attached to a stud or bolt F secured in a bore D in a fixed bracket A by a nut S. Adjustable cheeks B are provided to guide the sides of the blade and a passage P allows lubricant to pass to the bearings, a washer T between a locating sleeve J and the dished housing L preventing the lubricant from escaping and foreign matter from entering. In a modification, Fig. 4, the dished housing is formed by a part integral with the disc K and a plate V secured thereto. The stud F is screw-threaded in the bore D and clamped by the nut S, and wear in the bearings is compensated by rotating the stud 8 in the bore D.
Patent GB-230008-A (GB)
Abstract: 230,008. Lindsley, H., (Assignee of Dow, A. W.). Feb. 29, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Compositions containing bituminous and siliceous and like materials, particularly mixtures of bitumen and soil with or without sand, are obtained by selecting the filling materials and determining their proportions according to their capacity for adsorbing bitumen. The adsorption value may be determined by agitating 10 grams of the filler, which has been lightly ground and passed through a 200-mesh sieve, with 20 c.c.'s of a carbon disulphide solution containing 0.1 gram of bitumen, filtering off the solution, and colorimetrically estimating its loss of strength. The filler should contain not less than 35 per cent of material passing the 200-mesh screen; the adsorption value of this fine portion should be not less than 70 per cent, and that of the whole filter not less than 60 per cent. If the adsorption value exceeds the minimum the filler may be mixed with sand or a softer bituminous cement may be used.
Patent GB-1246204-A (GB)
Title: Battery container
IPC: H01M50/134
Filed: 1969-05-07
Abstract: 1,246,204. Battery containers. FORD MOTOR CO. Ltd. 7 May, 1969 [24 June, 1968], No. 23221/69. Heading C3P. A battery container is made from a composition comprising a copolymer of a conjugated diolefin and a styrene having a weight ratio of diene to styrene greater than 4 : 1, at least 100 parts by weight of filler per 100 parts of polymer, and a vulcanizing agent. The composition may contain oils and other processing aids. The composition is preferably granulated before moulding.
Patent GB-1308866-A (GB)
Title: Method of providing holes in a sheet of synthetic resinous material
IPC: B29D28/00
Filed: 1971-04-19
Abstract: 1308866 Perforating plastics sheet B S SANDERS 19 April 1971 [17 March 1970 30 Oct 1970] 23299/71 Heading B8A A method of providing holes H in a synthetic resinous sheet material, e.g. HD polyethylene, includes the steps of stretching an extruded sheet sufficiently to cause a permanent set in the are B, e.g. by rollers operating at different speeds, weakening the sheet at a plurality of positions in an area D, e.g. by roller cutters, and further stretching the sheet in an area F in the same direction as before to open the weakened portions. The sheet can be weakened by embossing. Stretching can take place in a direction transverse to the direction of extrusion. The sheet can be heated. A number of layers of the sheet can be slit at the same time. The sheet can be printed.
Patent GB-1432577-A (GB)
Title: Substituted indolin-2-ones
IPC: A61K31/40
Filed: 1973-05-16
Abstract: 1432577 Indolin-2-ones A H ROBINS CO Inc 16 May 1973 [17 May 1972] 23374/73 Heading C2C The invention comprises compounds of formula wherein the benzoyl group is in the 5- or 7-position of the indoline ring, and R, R<SP>1</SP> are each H or C 1 -C 6  alkyl, or R<SP>1</SP> is C 1 -C 6  alkoxy, halogen, NO 2  or CF 3 . The 5-substituted indolinones are prepared by reacting an indolin-2-one with R<SP>1</SP>C 6 H 4 COCl; the 7- substituted indolinones are prepared by cyclizing a 2-acetamido-3-benzoylphenylacetic acid or an ethyl ester thereof. Therapeutic compositions which are preferably administered orally comprise compounds of the above formula, which prevent the inflammatory response to pleural irritation.
Patent GB-1180917-A (GB)
Title: Aqueous Dispersions of Water- and Alkali-Insoluble Copolymer Particles having a Hydrophobic Core and a Hydrophilic Surface.
Inventor: CORRY ALFRED REGINALD
IPC: C08F212/04
Filed: 1966-05-25
Abstract: 1,180,917. Aqueous dispersions of heterogeneous copolymers. IMPERIAL CHEMICAL INDUSTRIES Ltd. 8 May, 1967 [25 May, 1966], No. 23406/66. Heading C3P. [Also in Division C5] Aqueous dispersions of water- and alkaliinsoluble copolymer particles comprise a copolymer derived from a major proportion by wt of (a) styrene or a substituted styrene with a minor proportion of (b) a neutral or acidic water-soluble monomer only or with a minor proportion of (c) a different neutral or acidic water-soluble monomer, wherein monomer (b) is concentrated on the surface of the particles. The dispersions may be made by conducting the polymerization so that all or a part of monomer (b) is withheld from the polymerization until part of monomers (a) and (c) has been polymerized and adding monomer (b) or the remainder thereof together with the remainder of monomers (a) and (c). Monomer (b) may be methacrylamide and monomer (c) may be hydroxypropyl acrylate or acrylic acid. In the examples the monomers were polymerized in an aq. mixture of sodium carbonate, turkey red oil or sulphonated methyl oleate and ammonium persulphate. The aqueous dispersion may be blended with an alkyl phenol/ethylene oxide condensate, sodium dodecylbenzene sulphonate and sodium xylene sulphonate to form an opaque liquid synthetic detergent.
Patent GB-1081989-A (GB)
Title: Channel length for scraper chain conveyor
Inventor: TEMME HELMUT
IPC: B65G19/28
Filed: 1966-05-26
Abstract: 1,081,989. Conveyers. GEWERKSCHAFT EISENHUTTE WESTFALIA. May 26, 1966, No. 23570/66. Heading B8A. A channel length for a scraper chain conveyer comprises a pair of two sigma-shaped side section members 10, 11 between which a channel bottom plate 12 is welded midway between the upper and lower flanges. The two lower flanges 13, 14 are connected by a cruciform member formed by a pair of diagonal struts 15, 16 secured by their ends, as by welding, at or close to the ends of the channel length. The cross-section 17 of the struts 15, 16 has a flat profile and the edges of the struts 15, 16 are bevelled on the top surface. At the junction 18 between the struts 15, 16 they may be connected together or be formed integrally as a single member.
Patent GB-783473-A (GB)
Title: Dry spinning cellulose ester solutions
IPC: D01D5/04
Filed: 1955-08-16
Abstract: In dry spinning a solution of a cellulose ester of an aliphatic organic acid containing up to four carbon atoms in the molecule in methylene chloride or in a mixture of methylene chloride and an alcohol containing up to four carbon atoms in the molecule, before spinning begins the outer face of the spinning jet is wiped with a mineral oil which is miscible with acetone and has an S.U.V. at 100 DEG  F. between 32 and 2000 seconds, and preferably 100-150 seconds, or with a mixture of such a mineral oil with acetone. The cellulose ester may contain less than 0.4 and especially less than 0.2, free hydroxyl group for each anhydro-glucose unit in the cellulose molecule, and may have an acetyl value (expressed as acetic acid) above 58 and especially above 60 per cent.  When a mixture of oil and acetone is employed it preferably contains 30-70 and especially 40-60 per cent by weight of oil.  In an example, a 22 per cent solution of a cellulose acetate of acetyl value 60 per cent in a mixture of 90 parts methylene chloride and 10 parts of methanol is dry spun through a multi-orifice spinning jet which has first been wiped with a cloth wet with a highly refined mineral oil having an S.U.V. of 130 seconds at 100 DEG  F.
Patent GB-170440-A (GB)
Title: Improvements in and relating to variable speed gears
IPC: B62M25/00
Filed: 1920-08-12
Abstract: 170,440. Comery, W. Aug. 12, 1920. Variabde.-speed gearing.-Relates to gearing of the kind comprising parallel shafts a, e having engaging gear pairs b, c and h, i at their ends and a pair of intermediate continuously-meshing gears q, r, by the sliding movement of which the speed changes are effected. Splines or keys are used throughout to make the connections, alternate keys such as p, Fig. 2, being preferably cut back to facilitate engagement. The gears q, r may be turned end-for-end when worn. The clutch elements may be made separate from the gears so as to be easily renewed. In the arrangement shown in Fig. 2, power passes from the driving- shaft a through the gear b secured to it, through the gear c and splines n on a divided sleeve e, and then through gears r, q and splines o to the driven sleeve g loose on the shaft a. On sliding the gears q, r to the left, the two sections of the sleeve e are clutched together by the gear r, the drive then passing through the gears b, c, i, h, yielding the lowest speed. The highest speed is a direct drive obtained by connecting splines p, o on the shaft a and sleeve g directly by the gear q. In the arrangement shown in Fig. 3, the splines p are long and the ends of the divided sleeve e are connected by a spline-clutch ring r<1> within and turning relatively to the gear r. Two other forms are described. The gear is operated by a forked lever s passing between the gears q, r engaging a groove in the rim of each. A kick starter wmay act on one of the countershaft gears.
Patent GB-1273954-A (GB)
Title: Pipe insulation
IPC: F16L59/02
Filed: 1971-04-19
Abstract: 1,273,954. Coated sheet material. VITA CORTEX Ltd. 19 April, 1971 [12 March, 1970], No. 23615/71. Heading B2E. [Also in Division F2] An insulating wrap for pipes comprises a slab plastics foam material provided on its opposed longitudinal side faces with a contact adhesive masked by a release backing. A slab 1 may be sliced from a block 4 e.g. of polyurethane or polyethylene foam the side faces 5, 6 of which are provided with a double sided adhesive tape. One or both faces 2, 3  may be covered with an impermeable coating of a suitable polymer or plastics sheet. In use the backing is removed and the slab wrapped around the pipe and the longitudinal faces adhered together.
Patent GB-532079-A (GB)
Title: Improvements in or relating to refrigerating apparatus
IPC: F25B49/02
Filed: 1939-08-16
Abstract: 532,079. Refrigerators. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Aug. 16, 1939, No. 23629. Convention date, Sept. 2, 1938. [Class 29] In a thermal control system a part 45 of the conduit 43 connecting a thermal capsule 44 in the refrigerating chamber with the bellows 37 of a thermostatic switch controlling the compressor motor 27 is influenced by the temperature of a part 35 of the inlet conduit to the evaporator 19, and also by the temperature of the atmosphere outside the chamber, the control operating in such a manner that the capsule 44 initiates an active period of the machine and the part 45 terminates the active period. The evaporator inlet portion 35 is on the low pressure side of a capillary expansion device and is located in part within the insulation of the removable wall panel 23 of the cabinet, which is influenced by outside temperature, and the thermal conduit 45 may be connected to the portion 35 by a metal clip 46 adjusted at the factory to a desired heat transfer condition. In inactive periods the parts 35, 45 warm up more quickly than the evaporator and the capsule 44 assumes control, whereas in an active period the part 35 cools more quickly than the rest and the part 45 takes control.
Patent GB-282866-A (GB)
Title: An improved frame for holding sheets of paper or the like
IPC: G09F1/12
Filed: 1926-09-25
Abstract: 282,866. Hodsoll, F. W. Sept. 25, 1926. Boards for notices and the like. - A display frame for paper or other sheets bearing advertising matter, notices, &c., is provided with means for positively locating the sheet on the display surface before it is secured in the frame. The frame consists of a baseboard A having a display surface B, which is surrounded by ridge-portions or escarpments I bearing locating-pins J adapted to pierce the sheet to be displayed. To the baseboard is hinged an upper frame-member D containing a recess to accommodate the escarpments I and pins J. The frame-members D may be held closed by means of a pin F, engaging with a spring member G, or by means of a bolt and nut, or a lock and key. Alternatively, the member D mav fit within a border on the baseboard, and bo secured thereto by spring plungers engaging in cavities. The escarpments I may be replaced by knob-like projections. The display surface B may be upstanding, or its centre portion may be cut away.
Patent GB-998904-A (GB)
Title: Improvements in or relating to liquid level detectors
IPC: G01F23/66
Filed: 1963-06-14
Abstract: 998, 904. Liquid level Indication. J. FAIRHURST. June 2, 1964 [June 14, 1963], No. 23746/63. Heading G1H. In a liquid level detector in which a weight 14 at the end of a line or tape 13 is magnetically coupled to an annular float 22 vertically movable outside a non-ferrous tube 16 sealed to the body of vessel 10 containing liquid, there is provided a second tube 15 which surrounds the tube 16 so as to leave an annular space 17 which is normally sealed from the vessel 10 and is connected to a detector device such as a pressure gauge 19 to indicate any change in the annular space 17 due to infiltration of any liquid or gas from the vessel 10. A further vertically movable magnet may be provided in the space 17. A spring biased pinion actuated by a knob 26 is provided to lower the weight 14 into operative region with the magnetic float 22.
Patent GB-1203188-A (GB)
Title: Mounting arrangement for starter switches
Inventor: BARNES JOHN SIDNEY
IPC: H01R33/00
Filed: 1969-05-09
Abstract: 1,203,188. Two-part couplings. THORN LIGHTING Ltd. 9 May, 1969, No. 23797/69. Heading H2E. A moulded panel-mounting housing 10 has an aperture (not shown) for receiving a fluorescent lamp starter switch 13 of complementary shape and size to the opening, a flange 17 which abuts the panel (not shown), and one or more inwardly resilient legs 20 integral with the housing body 11, attached thereto at one end only, adjacent but spaced from the flange 17 at the other end and having an outermost surface 22 which diverges from the body in the direction of the flange. Rotation of the housing in the panel is prevented by a square projection 26 on the flange which co-operates with the panel aperture. The legs 20 are wedge-shaped and are attached to the body 11 at the apex and are flush with the innermost surface of the aperture. The body is closed at one end by a portion 30 which has slots 33 receiving U- shaped contacts 31 which are retained by tabs 34. Wire leads are attached to the contacts by pushing their bared ends into slots 35. The contacts are accessible to the contacts 32 of a switch 13 through arcuate slots in the interior face of the portion 30 (Fig. 3, not shown). The arcuate slots have a large entry aperture (41) and a narrower portion (38) dimensioned such that after insertion and rotation, shoulders (42) retain the switch 13.
Patent GB-1337061-A (GB)
Title: System for driving a pulse motor
IPC: H02P8/12
Filed: 1971-04-19
Abstract: 1337061 Transistor oscillators FUJITSU Ltd 19 April 1971 [23 March 1970] 23854/71 Heading H3T [Also in Division H2] A system for driving a stepping motor, Fig. 9, comprises a switching circuit 21 for applying a voltage EV 1  to an exciting winding when there is an "on" control signal from the output SP of a pulse generator 20, and an exciting current detecting circuit 22 which reverses the control signal at SP to an "off" condition to block the exciting current. When no excitation current is required in the winding 15 a positive potential is fed to input 23 of the pulse generator, which ensures that a transistor Q 4  is turned on to connect the output SP of the signal generator to ground potential. When an excitation current is required in the winding the potential at input 23 is dropped to zero, the transistor Q 4  turns "off" and the potential at the output SP rises to turn "on" transistors Q 5  and Q 6  to connect the voltage supply EV 1  across the winding 15. The resulting current charges the capacitor C 3  and raises the potential at a point DET. When this potential reaches a predetermined value transistor Q 7  of the signal generator is turned "on" and hence turns "on" transistor Q 9  to connect the output SP to ground potential. Transistors Q 5  and Q 6  are thereby turned "off" and the current supply to the coil 15 is stopped. Capacitor C 3  discharges through a resistor R 15  so that the potential at the point DET drops, transistors Q 5  to Q 9  change over and the current supply cycle is repeated, providing there is zero input potential at input 23. In the embodiment shown in Fig. 11 a pulsed input signal applied at input 24 excites a primary winding of a transformer T 1  via a transistor Q 10 . An induced secondary current is rectified by a diode D 5  and turns "on" a gate-turn-off thyristor GT#o1 to apply a voltage E 2  across a winding 25. The excitation current charges a capacitor C 5  and raises the potential at a point (d) such that it becomes greater than that at a point (c) and the thyristor GT#o1 turns "off". The capacitor C 5  discharges through a resistor R 20  so that the potential at point (d) falls, and the current supply cycle is repeated. In the embodiment shown in Fig. 12 a negative exciting signal at input 25 causes transistor Q 12  to be turned "on" via transistor Q 11  and a gate-turn-off thyristor GTo2, to apply a voltage E 3  across a coil 26. The potential at point DET increases as a result of the excitation current, and at a predetermined value reverses the state of transistor Q 11  to turn "off" the transistor Q 12  and thereby block the winding current. The potential at point DET then drops and the current supply cycle is repeated.
Patent GB-1042327-A (GB)
Title: An improved lime signalling apparatus
IPC: G04C21/00
Filed: 1963-06-14
Abstract: The time signalling apparatus, Figs. 1 to 6 (not shown) is for indicating when each of a series of operations is to be carried out. It is applied in the winding of yarn packages on a multi-position winder in the melt spinning of synthetic yarns to ensure equal amounts.  A number of signal lamps s1 to s8, one at each winding position, are lit at intervals t corresponding to a constant exchanging time, and an interval T between the starting times of successive series corresponds to the doffing times of the spools.  A known rotary selector switch 14c has contacts 1 to 8 in circuit with the lamps.  When it is on one of these contacts, a known repeat cycle timer 15, Fig. 3, is energized and after the time t closes a contact 15c to energize a relay 14s which advances the selector to the next contact.  Once contact 8 is passed, ensuring surplus contacts such as 9, 10, 11 are passed through quickly.  When each of these contacts is made, a relay 12s is energized to close a contact 12c which through a normally closed contact 16b energizes a relay 16s which closes a contact 16a in the circuit of the relay 14s and opens the normally closed contact 16b.  This repeatedly advances the selector until contact o is reached.  At this point a relay 13s is energized and opens a switch 13c in the circuit of the repeat cycle timer 15, so that the actuation of contact 15c ceases.  All three of the contacts 15c, 16a, and 18c then remain open until the time T for a fresh cycle has elapsed.  The time T is determined through a clock 19 which once each minute closes a switch 19c to energize a relay 20s.  This closes a contact 20a in the circuit of the minutes counter 21 to advance this counter, and also closes a contact 20b in the circuit of a relay 18s.  At the end of the time T, the minutes counter closes contact 21b so that, contact 20b also being closed at this time, a relay 18s is energized which closes contact 18c and energizes the relay 14s to advance the selector to contact 1 and the cycle is resumed.  Fig. 5 shows a driving arrangement of the selector 14c and Fig. 6 the positions of the contacts of various relays in the circuit while in the unexcited state.
Patent GB-482886-A (GB)
Title: Improvements in or relating to local anesthetic bases and process of preparing same
Filed: 1936-09-01
Abstract: Monoalkylaminoethyl - p - aminobenzoates are prepared by reacting a monoalkylaminoethanol with p-nitrobenzoyl chloride and reducing the product.  The products possess therapeutic properties.  According to the example, mono-n-butylaminoethyl-p-aminobenzoate is obtained by treating mono-n-butylaminoethanol with p-nitrobenzoyl chloride in aqueous caustic alkali at 30-40 DEG  C., and the reducing the p-nitro compound to the p-amino compound with tin and hydrochloric acid at about 70 DEG  C.  The p-nitrobenzoyl chloride is preferably added in small quantities up to the equimolecular amount and the temperature carefully controlled, in order to avoid formation of bye-products. The mono-ethyl, -n-propyl, -isopropyl, -isobutyl, -n-amyl and -isoamyl products are similarly obtained.  Aqueous p  solutions of the products for anaesthetic purposes do not necessarily require the addition of a vaso-constrictor such as epinephrin and then in smaller amounts than in the case of procaine.  Specified solutions are made up from (1) monoamylaminoethyl-p-aminobenzoate hydrochloride, sodium chloride, sodium bisulphite and a trace of epinephrin; the first compound may be replaced by the corresponding mono-isobutyl, -butyl or -isoamyl compound; (2) monoamylaminoethyl-p-aminobenzoate hydrochloride and sodium-chloride; the mono-amyl compound may be replaced by the mono-isoamyl compound.  Monoalkylaminoethanols are prepared by (1) reacting ethanolamine with an alkyl bromide in equimolecular proportions, or (2) treating a monoalkylaniline with ethylene oxide, diazotizing the alkyloxyethylaniline and boiling with caustic alkali.  Examples are given.ALSO:Aqueous solutions for anaesthetic purposes comprise salts of monoalkylaminoethyl-p-aminobenzoates, together if desired with addition of a vaso-constrictor such as epinephrin.  Specified solutions are made up from (1) monoamylaminoethyl - p - aminobenzoate hydrochloride, sodium chloride, sodium bisulphite and a trace of epinephrin; the first compound may be replaced by the corresponding monoisobutyl, -butyl or -isoamyl compound; (2) monoamylaminoethyl-p-aminobenzoate hydrochloride and sodium chloride; the mono-amyl compound may be replaced by the monoisoamyl compound.