baber/WOPTO huggingface dataset:
Patent GB-1213561-A (GB)
Title: Device for converting a direct voltage to an alternating voltage
Inventor: BACKMAN OWE
IPC: H02M7/48
Filed: 1968-04-17
Abstract: 1,213,561. Automatic voltage regulation. ALLM€NNA SVENSKA ELEKTRISKA A.B. April 17, 1968 [April 18, 1967], No.18072/68. Heading G3X. [Also in Division H2] Voltage output of a semi-conductor D.C./A.C. invertor I, Fig.1 is maintained constant, should the input voltage vary, by a regulator comprising a saturable transformer 2 having a capacitor 6 across its secondary winding 5 to form a ferro-resonance circuit at the nominal frequency, an unsaturable reactor 4 being provided to limit the primary current when the transformer 2 is saturated, thus limiting the primary current which must be commutated by the invertor and in addition improving the secondary output waveform. A reactor 7 is tuned to C6 for resonance at the third harmonic so that this frequency is filtered off. As shown Fig.2, the primary winding 3 and secondary 5 are wound on a core leg 15. Between the two windings are flux leakage paths formed by yoke parts 11, 12 with air gaps 13, 14 whereby the conditions on the secondary side, when resonance oscillation prevails, will only be affected to a negligible degree by the value of the primary voltage. A compensating winding 8 connected in phase opposition to the secondary, is wound around the primary and will have a substantially square waveform similar to the primary. The invertor output voltage waveform would thereby be distorted, so a parallel resonance circuit C9, L10 is connected thereacross and tuned to the nominal frequency, and provides a low reactance at the higher harmonics. The compensating winding will be loaded through the parallel circuit with higher harmonic currents for which the impedance drop of the reactor 4 is higher. The waveform of the primary input voltage will thus be improved. The reactor 7 further acts to limit the primary current toward the ends of each half-cycle when the current rises rapidly as the core is saturated. The primary voltage waveform is thereby rendered not entirely square (having rounded corners) and the secondary waveform is therefore improved.
Patent GB-821380-A (GB)
Title: Improvements in and relating to apparatus for cleaning grain or the like material
IPC: B07B4/02
Filed: 1957-06-07
Abstract: Grain and like material is cleaned in apparatus comprising an updraught air channel, means-narrower than the channel-for feeding grain to the channel, and means for creating an air current in the channel.  The air current may be produced by suction or blowing.
Patent GB-599450-A (GB)
Title: Improvements in or relating to mechanical actuator mechanism
IPC: B64C25/68
Filed: 1945-07-17
Abstract: 599,450. Operating clutches. STEVENS, A. H. (Lear, Inc.). July 17, 1945, No. 18259. [Class 80(ii)] [Also in Groups XXX and XXXIII] In a mechanical actuator, especially for operating the landing hook of a carrier based aircraft, excess torque responsive means are provided to substantially instantaneously arrest the motion when the moving member reaches either of the limiting points, and a drum and cable mechanism is provided for alternative actuation. An electromagnetic clutch 35, as described in Specification 549,552 has a driving disc 31 secured to the driving shaft of a motor 30, and an axially slidable driven disc 33 normally urged against a braking surface 38 by a spring 37. The disc 33 has a pinion 36 engaging with the gears 41 rotatable on the shafts 51 which are secured to a movable mounting plate 42. Rigid with the gears 41 are pinions 43 which engage with an annulus 44, supported in the bearing 46, and having a shaft extension 52 carrying a pinion 53 which, through the countershaft gears 83,84, 85, 87, drives a shaft 88 having a sprocket 11 keyed thereto. A chain 14, Fig. 1, driven by sprocket 11 and supported by a sprocket 12 carries the landing hook 15. The movable plate 42, Fig. 3, has teeth 54 engaging with the teeth 56 on a sector 57 pivoted on a shaft 60 and having a roller 77 which contacts the push-buttons 78 or 80 when the sector moves to its extreme position at either side. Springs 68, 70 having adjusting means 71, 73 and 72, 74 locked by the nuts 75, 76, respectively, urge the sector to a central position. Operation of a push-button 16 in the aircraft cockpit energises the motor and clutch, which are in the same circuit, and causes rotation of the pinion 36 and hence the sprocket 11 to extend the hook 15. When the hook 15 reaches its limit of travel the increase in torque on the gears 41, 43 causes the plate 42 and sector 57 to move against the loading of the spring 68 or 70 whereupon the roller 77 contacts either push-button 78 or 80 to break the clutch and motor circuit. As soon as the circuit is broken, the clutch 35 frees to eliminate the armature inertia, and the spring 37 forces the disc 33 against a braking surface 38 to stop rotation of the gear trains and the sprocket 11. Operation of the button 17 energises the motor to rotate in the reverse direction to retract the hook. The push-buttons 16, 17 act through electrical relays having holding circuits to maintain operation of the motor until the circuit is broken by the respective bush-button 78 or 80, a warning light circuit is also included to show when the hook is extended. Manual operation of sprocket 11 is provided by a cable 26 wound on a drum 107 freely mounted on a shaft 100 supported in shaft 88 at one end and secured to bracket 97 at the other. A spring, fixed to a member 108, rigid with bracket 97, and to the drum 107 rewinds the cable during the return period; unidirectional drive, on pulling cable 26, being imparted to a ratchet 112 on the boss 111 of the sprocket 11 through a pawl 113 pivoted on the drum 107.
Patent GB-1272204-A (GB)
Title: A ringnet with a bottomnet
Inventor: THEODORSSON INGOLFUR
IPC: A01K73/12
Filed: 1970-04-16
Abstract: 1,272,204. Seine pursing. I. THEODORSSON. 16 April, 1970, No. 18262/70. Heading A1A. A seine purse comprises a main net 3 bordered by a floatrope 1 and a leadrope 4, and a bottom net 6 whose leading edge is bordered by a bottomrope 7 to which ring ropes 8 attach rings 9 through which passes a steelrope 10 such that the area encompassed by the leadrope can be partially closed  by drawing on the steelrope 8 before drawing in the main net 3. In the mid-section of the net the ratio of the depth of the main net 3 to that of the bottom net 6 is approximately 3:1 and increases towards the edges of the net. Since the additional bottom net is approximately horizontal it is stated that it does not greatly add to the frictional drag during the drawing in of the net while reducing catch losses out of the bottom of the net.
Patent GB-1496909-A (GB)
Title: Imide-modified polyester resin and wire enamel containing the imide-modified polyester resin
IPC: C08G73/10
Filed: 1975-05-01
Abstract: 1496909 Imide ring-containing dicarboxylic acids NITTO ELECTRIC INDUSTRIAL CO Ltd 1 May 1975 [1 May 1974] 18307/75 Heading C2C [Also in Division C3] Novel dicarboxylic acids of the formula wherein R 1  is a divalent organic group; R 2  is a trivalent organic group and n is at least one, are prepared by reacting one mole of an imide compound of the formula or an acid-amide precursor thereof, with 2 moles of a tricarboxylic acid anhydride of the formula The novel dicarboxylic acids may be used in the production of polyesters (see Division C3).
Patent GB-1463970-A (GB)
Title: Web cutting machine
IPC: G07B5/02
Filed: 1975-05-02
Abstract: 1463970 Cutting apparatus INTERNATIONAL BUSINESS MACHINES CORP 2 May 1975 [1 July 1974] 18348/75 Heading B4B A machine for cutting sheets from a web 40 comprises feed rollers 24 to advance the web around part of a cylinder 23 rotatable in a direction counter to the direction of advance of the web, two complementary sheet cutting members 46, 48, and means 70-78 to effect relative movement between the carrier and the cutting member 46 to cause the latter to perform a cutting operation on the web with the cutting member 48. The cutting member 46 is in the form of a double-ended anvil member rotatably mounted in the cylinder and connected to lever 74 provided with a pair of cam followers 76, 78. The cam followers co-operate with a stationary cam track 70, 71, 72 such that upon one revolution of the cylinder, the anvil is rotated half a revolution to bring an operative end into engagement with a blade 48 to sever the web. If desired, the anvil may be maintained, during rotation of the cylinder, in a position in which it does not co-operate with the blade; this is effected by means of solenoid-operated pins 82, 84 being selectively inserted into the lead-in portion of the cam grooves 71 or 72 thereby maintaining the cam follower in the concentric portion 70 of the cam groove. The web is drawn from a supply reel 11 by the feed rollers 24, a sensing device 18, 20 being provided for maintaining a web loop between the reel and the feed rollers. The blade 48 is held in a frame member 38 by a clamp 68 and may be radially adjusted by a bar 66.
Patent GB-929940-A (GB)
Title: A rotary internal combustion engine
IPC: F02B53/00
Filed: 1959-05-29
Abstract: 929,940. Rotary I.C. engines. F. J. HOGGUER. May 29, 1959 [June 4, 1958], No. 18421/59. Class 110 (2). A rotary I.C. engine comprises a piston 9 having a radial main blade 25 in the form of a tube having a straight radial portion cut therefrom, a series of radial follower blades (see Fig. 5 (not shown), and a series of radial slits 44 allowing uniform thermal expansion. The piston co-operates with a series of equally-spaced compression chambers 4, each of which has a sliding sleeve 7 carrying an abutment 28. Combustion is effected by sparking plugs or atomizers disposed in the holes 45 of the members 4. The engine is provided with inlet and outlet ports 27, 37 respectively, cooling ribs (see Fig. 3, not shown), and guides 43 for directing the flow of combustion products against the vanes. The casing 1 may be stationary or rotate in the opposite direction to that of the piston. A series of such units may be mounted on the output shaft 6.
Patent GB-1092390-A (GB)
Title: Process for producing crystalline olefin polymers and catalyst compositions therefor
IPC: C08F4/68
Filed: 1966-04-27
Abstract: Olefins e.g. ethylene, propylene, butene-1 or styrene are polymerized or copolymerized in the presence of a three component catalyst comprising (1) an organo aluminium compound of formula AlR2X, where R is hydrocarbyl and X is halogen (2) a halide of Ti, Zr, V, Cr, Mo or W and (3) a monocarboxylic ester having a side chain on a carbon atom in a -position to the carboxy carbon atom.  Polymerization may be effected with or without a solvent at temperature between room and 110 DEG  C.  Examples describe the preparation of polypropylene, and copolymers of ethylene or butene-1 with propylene.ALSO:Polymerisation catalysts comprise (1) an organoaluminium compound having the formula AIR2X where R is alkyl, aryl, aralkyl, alkaryl or cycloalkyl group and X represents a halogen atom, (2) a halide of Ti, Zr, V, Cr, Mo or W and (3) a monocarboxylic ester having a side chain on a carbon atom in a -position to the carboxy carbon atom.  Specified (1) are Al Et2Cl, AlPr2Cl and Al(isoBu)2Cl, (2) TiCl4, TiBr4, TiCl3, ZrCl4, VCl3, CrCl3 and MoCl3 and (3) methyl, ethyl propyl or butyl methacrylate, methyl, isobutylate, ethyl methyl vinyl acetate, methyl (methylethyl) acetate and butyl (methyl ethyl) actate.
Patent GB-476550-A (GB)
Title: Improvements relating to the stretching or tentering of fabrics
IPC: D06C3/00
Filed: 1937-07-02
Abstract: 476,550. Stretching- fabrics. MEISSNER, R July 2, 1937, No. 18461 Convention date, July 2 1936. [Class 42 (i)] Tentering.-A jet of air is used for impaling a fabric a on to the pins e<1> of a chain tenter.
Patent GB-945860-A (GB)
Title: Improvements in or relating to resilient mountings
Inventor: HILBURN LUDWIG
IPC: F16F1/387
Filed: 1961-05-19
Abstract: 945,860. Resilient mountings. METALASTIK Ltd. April 2, 1962 [May 19, 1961], No. 18482/61. Heading F2S. A resilient mounting of the kind comprising a bush 10 of rubber or like elastomeric material which is adapted to be inserted into a rigid housing and comprising a rigid inner metal part 11 which is bonded to the rubber bush and which is adapted for attachment to a member which is to be resiliently supported from the housing by the bush is characterized in that the bush is cored, slotted, or otherwise provided with recessed portions to provide a plane of reduced thickness for the mounting and in that the rigid inner metal part is flattened in planes parallel with that plane. As shown, the rigid inner part comprises metal plates 12, 13 which have semi-circular channel portions forming a bore 15 for receiving an attachment pin, e.g. for a leaf-spring, and the ends of which penetrate mid-way into slots 14 in the bush and are provided with out-turned flanges which form buffering faces 16 to engage respectively the adjacent walls of the slots 14 and limit the lowstiffness range of deflection in the mid-horizontal plane. When the buffering faces 16 engage the portions 18 of the bush further deflection is resisted by the portions acting in compression. The stiffness of the mounting in a vertical direction is relatively high, the rubber acting mainly in compression. A sleeve 24, split at 20, is bonded to the bush 10, the split 20 extending through the bush and into the slots 14 so that when it is inserted in a smaller housing the rubber bush is pre-compressed in a direction between its long sides and the split 20 is preferably closed. The outer sleeve may be omitted, the bushing 10 being inserted directly into the housing. In a modification the plates 12, 13 may be replaced by a rectangular cross-sectioned bar having a central bore and side faces which form the buffering-faces 16 and the outer sleeve 24, formed in one piece and shrunk into and preferably bonded to the bush so that the latter is in compression, is dimensioned to be a pushfit in the housing, e.g. an eye of a spring. In a further modification the side buffering-faces of the bar are rounded and the outer sleeve 24 is of cylindrical shape and holds the bush radial in precompression. In both modifications the outer sleeve and the bush may be split as shown in Figs. 1, 2. Instead of the slots 14 the bush may have recessed portions in order to form slots between the outer sleeve 24 and the bush the inner metal part 11 being totally imbedded in the bush. The outer sleeve may be omitted; and the inner metal part may be completely embedded in the central part of the bush 40 so that buffering takes place between the interfacing walls of the slots 14.
Patent GB-1147932-A (GB)
Title: Sealed switch construction and method of manufacture
IPC: H01H51/28
Filed: 1966-04-27
Abstract: 1,147,932. Reed armature relays. C. P. CLARE & CO. 27 April, 1966 [3 May, 1965], No. 18482/66. Heading H1N. A change-over sealed contact set has a part such as its armature contact 20 provided with a gauging portion 26 which during manufacture is inserted between fixed contacts 14b, 16b whilst the main stems 14, 16 are sealed in the housing end. The armature 20 is then withdrawn to a centre stable position (shown) or one side stable position (shown in dot-dash lines) before the other end of the housing 12 is sealed. Stem 16 is non- magnetic. The method of manufacture may be applied to a switch with a single fixed contact.
Patent GB-1267944-A (GB)
Title: t-ALKYL PERESTERS OF t-HYDROPEROXIDES
Inventor: LEWIS ROGER N
IPC: C07C67/00
Filed: 1969-04-10
Abstract: 1,267,944. Peresters. ARGUS CHEMICAL CORP. 10 April, 1969 [1 May, 1968], No. 18542/69. Heading C2C. [Also in Division C3] Novel peresters of the formula in which R<SP>1</SP> and R<SP>2</SP>, which may be the same or different, are alkyl or phenyl, or together form a cycloalkyl group where shown in broken lines, R<SP>3</SP>, R<SP>4</SP> and R<SP>5</SP> each are alkyl provided at least one of R<SP>3</SP>, R<SP>4</SP> and R<SP>5</SP> is a group containing at least 2 carbon atoms, and R is alkyl, alkynyl, phenyl or cyolohexyl, such that when any two of the groups R<SP>1</SP>, R<SP>2</SP> and R are methyl, the third group is not neopentyl and when R<SP>1</SP>, R<SP>2</SP> and R are each methyl not more than one of R<SP>3</SP>, R<SP>4</SP> and R<SP>5</SP> is methyl, or R is a group of the general formula in which l, m, n, o and p are 0 to 5 provided the sum of l, m, n, o and p is at least 1 and when l+m+n+o is 0, R<SP>1</SP> and/or R<SP>2</SP> is phenyl, and R<SP>4</SP> to R<SP>15</SP> are in each case identical to R<SP>1</SP> to R<SP>5</SP> respectively, defined above, are prepared by esterifying the appropriate acids with the corresponding tertiary hydroperoxides.
Patent GB-997217-A (GB)
Title: Improvements in the moulding of sawdust
IPC: B27N5/02
Filed: 1961-05-23
Abstract: 997,217. Moulding sawdust. L. LACOSTE. May 21, 1962 [May 23, 1961; July 21, 1961], Nos. 18562/61 and 26526/61. Heading B5A. [Also in Divisions B1 and B8] Sawdust, moulding powder and water are fed, via mixer 76 (see Division B1), conveyer 90 and hopper 91, to the space between a transfer tube 5 and a stepped vertically reciprocable heated male former 6 of one of a plurality of moulding units peripherally disposed around a continuously rotating table 1, Heated female mould member 26 is pivoted into engagement over tube 5 by means of circumferentially disposed guide rails 5 and locked in position by hydraulically-actuated member 51 as the former 6 is simultaneously raised by piston 14 to compress and mould a flower pot 100 within member 26. Upon retraction of former 6 the member 26 is pivoted to open and permit ejection of flower pot 100, by sprung tappet 32, on to rotating platform 101 for transfer to a destructive testing and stacking device (see Division B8). The hopper 91 includes a reciprocating trailing scraper blade 95 with attached bars 96 which simultaneously spread and pack the moulding composition. The pistons 45 and 15 are operated from high and low pressure and " return " hydraulic connections with the piston retraction connections 48 and 20 constantly connected to low pressure and the actuation connections 49 and 21 connected in turn through a stationary sequencing disc to low pressure, high pressure and " return " connections. Boxes and trays may also be moulded.
Patent GB-1434752-A (GB)
Title: Device for detecting a moving object
IPC: G01J1/02
Filed: 1973-04-17
Abstract: 1434752 Feeding sheets CANON KK 17 April 1973 [28 April 1972] 18581/73 Heading B8R [Also in Divisions G1 and G2] An apparatus for detecting a moving object, e.g. a sheet 2, e.g. to photograph it at 8, comprises a pair of opposed reflectors 4 1 , 4 2 , a light source 11 near one end of the reflectors and an element 12 responsive to light near the other end. The sheet 2 is fed by rolls 1 1 , 1 2 , 5 1 , 5 2 , between the reflectors and intercepts light which is reflected therebetween on its passage to the element 12, which actuates a shutter 9 on a camera, which photographs the sheet through a slit 7 1  and glass sheets 3 1 , 3 2 . Direct passage of light between 11, 12 is prevented by a shield 13, which may be reflective, see Figs. 5, 7, 9 (not shown). The reflectors 4 1 , 4 2  may be planar, and the element 12 may lie between the reflectors, or outwardly thereof, and the shield (121), Fig. 11 (not shown) may be secured to one of the reflectors, or pivotally mounted between them. In another embodiment, Fig. 13 (not shown) the reflectors (214 1 , 214 2 ) are curved to define an arcuate path between them.
Patent GB-695760-A (GB)
Title: Diazotisable polyazo dyestuffs and process for their manufacture
IPC: C09B43/44
Filed: 1951-08-07
Abstract: The invention comprises dyestuffs of the formula <FORM:0695760/IV (c)/1> where A is a benzene or naphthalene residue which may be substituted by halogen, alkyl, alkoxy, carboxylic arylamide, or arylazo, in which there is at least one sulphonic acid group and there may be a salicylic acid grouping, X is hydrogen, alkyl or alkoxy, Y is hydrogen, halogen, alkyl or alkoxy, and R is amino. These are made from corresponding dyestuffs where R is nitro or acylamino by reduction or hydrolysis respectively.  The starting materials are made by (1) coupling diazotized ANH2 with an amine of the formula <FORM:0695760/IV (c)/2> where Z is an aliphatic acyl group such as formyl, acetyl, oxalyl or urethane, condensing the product with phosgene, hydrolysing NHZ to NH2, and finally condensing with a benzoyl chloride substituted by Y and R; or (2) coupling diazotized ANH2 with a monobenzoyl - m - phenylene diamine appropriately substituted by X, Y and R, and condensing the product with phosgene.  The final reduction of R to nitro is effected by alkaline reducing agents, e.g. sodium mono- or poly-sulphide.  The products dye cotton and regenerated cellulose; they may be diazotized on the fibre and coupled with b -naphthol or phenylmethylpyrazolone to give dischargeable yellow, red or brown shades.  In the examples, (1) the urea of 2 : 4 - dimethyl - 41 - amino - 21 - (p-nitrobenzoylamino) - azobenzene - 6 - sulphonic acid is reduced to the diamino dyestuff; this can be diazotized on the fibre and coupled with phenylmethylpyrazolone; (2) the urea of 4 - amino - 2 - (p - nitrobenzoylamino) - azobenzene - 41 - carboxylic - (411 - hydroxy - 311 - carboxy - 511 - sulphoanilide) is reduced; the product can be diazotized on the fibre and coupled with phenylmethylpyrazolone or b -naphthol; (3) the urea of 4-amino-2-(p-nitrobenzoylamino) - benzene - azo - 21 - naphthalene-41 : 81-disulphonic acid is reduced; the product can be diazotized on the fibre and coupled with phenylmethylpyrazolone; (4) the urea of 4-amino-2-(p-nitro-m-methylbenzoylamino) - 41- (p - sulphobenzeneazo) - azobenzene - 21 - sulphonic acid is reduced; the product may be diazotized on the fibre and coupled with b -naphthol; (5) the urea of 4-amino - 2 - (p - nitrobenzoylamino) - 41 - (611 : 811 - disulphonaphthalene - 211 - azo) - 31-methylazobenzene is reduced; the product may be diazotized on the fibre and coupled with b -naphthol; (6) the urea of 4-amino-2-(m-nitrobenzoylamino) - 5 - methyl - 41 - (511 : 711 - disulphonaphthalene - 211 - azo) - 21 : 51 - dimethylazobenzene is reduced; the product can be diazotized on the fibre and coupled with b -naphthol; (7) the urea of 4 - amino - 2 - (p - methoxy - m - nitrobenzoylamino) - 5 - methoxybenzene - azo - 2 - naphthalene - 6 : 8 - disulphonic acid is reduced; the product can be diazotized on the fibre and coupled with b -naphthol.  Other suitable components are listed.
Patent GB-1410583-A (GB)
Title: Process for preparing benzoyl chloride
IPC: C07C51/58
Filed: 1974-04-29
Abstract: 1410583 Preparation of benzoyl chloride STAMICARBON BV 29 April 1974 [4 May 1973] 18620/74 Heading C2C Benzoyl chloride is prepared by chlorinating benzaldehyde under the influence of U.V. light which may be of a wave length of from 300 to 360 mÁ.