baber/WOPTO huggingface dataset:
Patent GB-1263300-A (GB)
Title: Alternating current electric machine
Inventor: BINNS KENNETH JOHN
IPC: H02K21/46
Filed: 1969-10-29
Abstract: 1,263,300. Permanent magnet rotors. K. J. BINNS, and J. E. HOLMES. 29 Oct., 1970 [19 Oct., 1969], No. 53018/69. Heading H2A. The permanent magnet rotor of an A.C. rotary electric machine e.g. synchronous motor and generator comprises an axially extending stack of one-piece laminations 10 having their planes normal to the axis of rotation, and extending inwards from their outer peripheries slots 12... 15 receiving ceramic or metallic permanent magnets 25 ... 28 which induce alternate polarity poles N, S in the resulting polepieces 16 ... 19, defined between adjacent slots. It may be embodied in a reluctance motor whose starting is effected by a squirrel cage comprising conductors 20 ... 22 of Cu or cast Al alloy. The tangentially magnetized magnets are retained by Al wedges 29 ... 32 and/or a slot filling cast with the cage, and the low reluctance path at the slot roots is reduced by notches 33. The shaft 11 is either magnetic or non-magnetic.
Patent GB-1309214-A (GB)
Title: Photochemical process for the preparation of dihalogenophosphines
IPC: B01J19/12
Filed: 1971-11-16
Abstract: 1309214 Dihalophosphines SOC NATIONALE DES PETROLES D'AQUITAINE 16 Nov 1971 [17 Nov 1970] 53214/71 Heading C2P In the preparation of hydrocarbyldihalophosphines by reaction of phosphorus halides with saturated hydrocarbons, the reaction is effected in the liquid phase under U.V. irradiation in the absence of oxygen and with agitation. The phosphorus halide may be a trihalide in an amount of 0À005 to 50 moles per mole of hydrocarbon. The hydrocarbon may be an alkane or cycloalkane, but in the case of alkanes, some isomerization may take place during the reaction resulting in a mixture of isomeric products. The U.V. radiation is preferably of wavelength 2100-3000 Š. The reaction temperature may be - 30‹ to + 80‹ C., and pressure may be applied when required to keep the reaction mixture liquid. The reaction may be effected in a nitrogen atmosphere. The product may be separated from the reaction mixture by fractional distillation.
Patent GB-1205749-A (GB)
Title: Pivotal joint
Inventor: BROWN JACK BERNARD SPENCER
IPC: F16C27/06
Filed: 1966-11-29
Abstract: 1,205,749. Bearings. SILENTBLOC Ltd. 28 Nov., 1967 [29 Nov., 1966], No. 53429/66. Heading F2A. A pivotal joint, e.g. for vehicle suspension or steering systems, comprises four coaxial parts, elastomeric part 1 being fixed with rigid part 5 which is relatively rotatable with plastics part 7 which is fixed with rigid part 12, lubricant chambers 11 being provided between the relatively rotatable parts 5, 7. In Fig. 1, rubber bush 1 is bonded to metal sleeve 5. Polyurethane sleeve 7 is bonded to or an interference fit with metal sleeve 12. Circumferential and axial ribs (9, 10) on the outer surface of sleeve 7 provide the lubricant chambers. Flanges 2, 6 are bonded together, and flanges 8, 13 joined by bonding and engaging projections and recesses. Flange 8 contains lubricant pockets. Sealing lips at the end of member 7, 8 are provided.
Patent GB-1271778-A (GB)
Title: Tool for assisting in connecting an electric cable conduit to a junction box
Inventor: KYRIACOU ROGIROS
IPC: B25B13/06
Filed: 1970-11-12
Abstract: 1,271,778. Spanners. R. KYRIACOU. 12 Nov., 1970, No. 53899/70. Heading B3N. A tool for assisting in connecting an electric cable conduit to a junction box includes a socket 3 adapted to receive the flanged nut end F of a connector bush B and a locating finger 11 projecting or adapted to project from the socket. The depth of the socket is sufficient to accommodate flange F only, the base of the socket 9 is formed by the face of a nut which is a force fit in an extension of the socket. Finger 11 screws into the nut. Socket 3 is at one end of a body portion which has a waisted portion 13 and a detachable handle portion 19. Flats 17 and 21 are provided so that the tool can be turned by a spanner and there are transverse holes 15 for the accommodation of a tommy bar. The end of the body portion remote from socket 3 terminates in a rounded pinnacle (not shown).
Patent GB-1213835-A (GB)
Title: Colour former for pressure sensitive recording paper and process for producing same
Inventor: SUGAHARA YUJIRO
IPC: B41M5/155
Filed: 1968-11-14
Abstract: 1,213,835. Montmorillonite clay minerals. MIZUSAWA KAGAKU KOGYO K.K. 14 Nov., 1968, No. 54042/68. Heading C1A. [Also in Division D2] Acid-treated dioctahedral montmorillonite clay minerals and mixtures of said minerals with natural dioctahedral montmorillonite clay minerals, having a specific surface area of at least 180 m.<SP>2</SP>/g. and a secondary colour development property (defined) of at least 1-40, at least 75% by weight of the total particles having a diameter of 10 microns or less, and at most 45% by weight of the total particles having a diameter of 1 micron or less, are used as a colour former for pressure-sensitive recording paper. The primary colour development property (defined) of the colour former is preferably at least 2-60 and suitable specified dioctahedral montmorillonite clays are bentonite, subbentonite, Japanese acid clay, fuller's earth and Florida earth. The Specification refers to processes of grinding and classification to produce materials having the desired particle size; the acid treatment may be carried out with hydrochloric or sulphuric acid.
Patent GB-542100-A (GB)
Abstract: 542,100. Preventing unauthorized running. MONGER, A. L. Oct. 4, 1940, No. 14868. [Class 7 (ii)]  The condenser of the distributer and interrupter system, or a similar condenser in substitution therefor, is incorporated in a unit 1 adapted to be plugged or inserted in the ignition system and readily removable for temporarily immobilizing the engine. As shown, the plug 1 is inserted in a socket 3 having a number of holes 4, only two of which are connected in the ignition circuit. The closure 6 of the plug has corresponding holes, in two of which are screwed contact pins 7 connected to the condenser plates.
Patent GB-1147515-A (GB)
Title: Polyamide acid dispersion
IPC: C08G73/10
Filed: 1966-12-06
Abstract: 1,147,515. Laminates; polyamide acid films. E. I. DU PONT DE NEMOURS & CO. 6 Dec., 1966 [6 Dec., 1965 ; 10 March, 1966], No. 54477/66. Headings B5B and B5N. [Also in Division C3] Glass fibre laminates and self-supporting films may be prepared using a composition comprising 1-60% by weight of a polyamide acid in an organic liquid which is either (1) acetone or dimethyl phthalate, (2) a mixture of (i) a polar solvent or swelling agent and (ii) a miscible non- solvent which is more volatile than the solvent and contains a carbonyl or thiocarbonyl group, or (3) a mixture of (1) and (2). In Example 1 a polyamide acid from bis(aminophenyl) methane and benzophenone tetracarboxylic acid dispersed in acetone is applied in stripes to glass fabric which has been previously impregnated with a polyimide from benzophenone tetracarboxylic acid diester and m-phenylene diamine. When plies of this fabric are laminated the product may be pulled out to a honeycomb structure. In Example 2 the acetone is replaced by a mixture of N-methyl-pyrrolidone and methyl isobutyl ketone. In Example 3 the dispersion of Example 2 is cast on a smooth substrate, dried and heat cured to form a selfsupporting film. In Example 4 a polyamide acid from benzophenone tetracarboxylic anhydride and bis(aminophenyl) methane dissolved in dimethyl o-phthalate is cast on a copper substrate and dried to smooth uniform film.
Patent GB-1457068-A (GB)
Title: Burst error correction code
IPC: H04L1/00
Filed: 1974-12-19
Abstract: 1457068 Correcting burst errors in bit streams MOTOROLA Inc 19 Dec 1974 [30 Jan 1974] 54919/74 Heading G4A [Also in Division H4] In an error correcting system for correcting burst errors of arbitrary length up to a maximum of B bits long in a bit stream of information bits I j , information bits I B  ....,I O  are sequentially read into a B + 1 stage shift register 10 of an encoder shown in Fig. 1, the contents I B , I O  of the respective first and last stages 14, 16 of shift register 10 being fed to a modulo-2 adder 18 which generates therefrom a parity bit P 3B , this process being repeated after each shift of shift register 10 so that in general the parity bits P are given by P 3B+j =I B+j #I j  (modulo-2 addition). The parity bits P are fed sequentially to the first stage 22 of a 2B + 1 stage shift register 20 (the extra B stages of register 20 delaying the passage of the parity bits therethrough so that I B  and P B  appear in stage 14 and in the last stage 24 of shift register 20 simultaneously), a switch 26 connected to stages 14 and 24 and clocked by a clock 28 at twice the rate of registers 10, 20 transferring an information bit I j  and the corresponding parity bit P j  to an output 30 after each synchronous shift of the registers 10, 20. The information and parity bits from output 30 may be fed via a transmission channel, e.g. a telephone line or a radio link, to an input 35 of a decoder shown in Fig. 2. The input 35 of the decoder is connected to a switch 32 clocked in synchronism with the incoming information bits via a clock recovery circuit 54 and a clock 56, the information and parity bits being separated and the information bits I j ' being fed sequentially to the first stage 36 of a 3B stage shift register 34, whereas the parity bits P j ' are fed sequentially to an input of a modulo-2 adder 38 (the primes indicate the received values of the transmitted bits). Adder 38 also has inputs connected to the last stage 42 and an intermediate stage 40 (offset by B bits from the last stage 42) of shift register 34, and generates therefrom a syndrome bit S given in general by S j =P' 3B+j #I' B+j #I' j . The syndrome bits S j  are fed sequentially to the first stage 46 of a B + 1 stage shift register 44. It is shown that, if '1' bits are present in the first stage 46 and in the last stage 48 of shift register  44, an error has occurred in the transmission of the information bit stored in stage 42 of shift register 34. A '1' bit is then produced from the contents of stages 46, 48 by an AND gate 50 and applied to one input of a modulo-2 adder 52 which inverts the erroneous information bit in stage 42. The '1' bit from AND gate 50 is also fed back to the first stage 46 of shift register 44 to correct the erroneous syndrome bit stored therein subsequent to its use in error correction of the next information bit.
Patent GB-1268917-A (GB)
Title: A method of providing a wear-resistant surface on parts or blanks
Inventor: MAXIMOVICH BOLESLAV IVANOVICH
IPC: C22C29/08
Filed: 1969-11-12
Abstract: 1,268,917. Casting composite articles. INSTITUT ELEKTROSVARKI IMENI E.O. PATONA. 12 Nov., 1969, No. 55375/69. Heading B3F. [Also in Division C7] A method of hard facing components such as blast furnace parts and honing equipment in which an abrasive powder 3, e.g. WC and an infiltrant metal 4, e.g. 60% Cu-20%, Mn-20% Ni are placed in a cavity formed between the mould 2 and the surface to be coated. The assembly is heated to 800-1200‹ C. in an oxygen free atmosphere to melt the infiltrant which impregnates and bonds the powder particles. The coated body may then be aged at 400-450‹ C. for 20-40 hours. Argon may be pumped into the mould cavity to prevent oxidation and a Ti getter pipe 5 and a fused borax flux may also be used.
Patent GB-1375399-A (GB)
IPC: A01F25/20
Filed: 1971-11-29
Abstract: 1375399 Apparatus for cutting leaf and stalk crops E WEICHEL 29 Nov 1971 [30 Nov 1970] 55380/71 Heading A4C Apparatus for cutting leaf and stalk crops comprises a rotating cutting tool 1, driven by a shaft (3) Figs. 1, 3 (not shown) through bevel gearing (2). A blade (9) of the tool moves in the direction shown and cuts through the material 4 on a rotatable storage platform 12, the cut material 6 sliding through the concave surface of the cutting tool and eventually leaving the platform to be transported away on a conveyer (not shown). The cutting tool is guided horizontally from the periphery of the platform by an extension arm 13 pivoted about a shaft 11 and driven by a motor 14, a device 17 being used to vary the height of the arm. A guide bar 15, parallel to the arm 13, ensures a constant angle of engagement of the cutting tool on the edge of the rotating pile of material 4, the speed of movement of the arm being adjustable by a device on the motor 14. An alternative arrangement of the apparatus uses a scanning cylinder 18, including a wheel 19, rolling at a selected distance from the cutting tool thus enabling the depth of penetration of the tool to be selected. A further embodiment Fig. 3 (not shown) comprises a plurality of successively aligned cutting tools (1)-(1 3 ) driven by a motor (21). The blades of the tools may be positioned individually around driving shafts (3) to set the required cutting angle and are vertically and horizontally movable about a vertical shaft which carries the motor (21) and extension arm 13. The cutting apparatus may be mounted on a mobile device so that material may be cut from the top or side of the piled material, cut from silos or compressed bales. Furthermore, using a set of aligned cutting tools also allows the cutting of material fed to the apparatus along a rectilinear path.
Patent GB-1476437-A (GB)
Title: Hole saw assembly
IPC: B23B51/04
Filed: 1974-12-24
Abstract: 1476437 Hole saws FRED SEGAL 24 Dec 1974 [13 March 1974] 55708/74 Heading B5L [Also in Division B3] A hole saw assembly 10, Fig. 1, comprises an arbor 20, the body 22 of which has a forward planar face 22a, Fig. 4, with two or more outwardly projecting spring-loaded studs 30, 31, the enlarged heads 30a, 31a of which fit into co-operating slots 45, 46 in the planar base 41 of a cylindrical cutter 40 having teeth 43. Pilot drill 23 is secured on the arbor by screw 24 and the tool is assembled by fixing drill 23 to the arbor, introducing the drill into aperture 44 of the base and the heads 30a, 31a into enlarged portions 45a of the slots, then rotating the cutter 40 relative to the arbor in either direction depending on which way it is to rotate in use. The edges of the slots may have ramps 50-53 so as to compress the springs 26, Figs. 4 and 5. In a second embodiment Figs. 6, 8 and 9, the studs 130, 131 are fixed to the arbor surface 122a and spring- loaded detent drills 150, 151 in the arbor engage in apertures 147, 148 in the cutter base 141. The slots 145, 146 are not ramped. Chip-relieving apertures 42, 42a may be provided in the cutter, see Fig. 1.
Patent GB-1408458-A (GB)
Title: Method and apparatus for treating grain
IPC: B02B3/04
Filed: 1972-12-07
Abstract: 1408458 Breaking the surface of grain PAULS & SANDARS Ltd 7 March 1974 [7 Dec 1972] 56461/72 Heading A2Q A method of penetrating the pericarp/testa of grain, particularly barley, comprises causing each grain in a stream of grains to impinge once only on an abrasive surface. In one embodiment a falling curtain of grain is allowed to fall from chute 1 on to revolving cylinder 7. The release of the grain is controlled by sliding gate 3 or, in an alternative embodiment (Fig. 4), by a ribbed roller. The abrasive surface of the cylinder may comprise a blend of silica grits of differing fineness bonded with a heat-cured epoxy-resin.
Patent GB-1146136-A (GB)
Title: A niobium-uranium alloy with predetermined total void volume and void size
IPC: C22C1/02
Filed: 1967-12-14
Abstract: 1,146,136. Making Nb-U alloys. UNITED STATES ATOMIC ENERGY COMMISSION. Dec.14, 1967 [Feb.24, 1966], No.56970/67. Heading C7D. In a method of producing a niobium-uranium alloy by vacuum sintering a mixture of niobium oxide, uranium oxide and carbon, a predetermined total void volume and void size is obtained in the alloy by employing a mixture containing a greater than or lower than stoichiometric carbon to oxygen ratio. Specifically referred to is the production of Nb-20%U using a number of carbon: oxygen ratios to obtain a range of porosities. Porosity is also affected by (a) carbon particle size - fewer voids result from the use of finer graphite particle; and (b) nature of the crucible used for sintering - Nb and Ta crucibles produce denser alloys than crucibles made from ZrO 2 , Y 2 O 3 , TaC or graphite.
Patent GB-1267501-A (GB)
Title: Improvements relating to a method and apparatus for forming an underground passage in stabilised soil
Inventor: COAD ALAN RAWLE
IPC: E02F5/10
Filed: 1967-12-15
Abstract: 1,267,501. Forming land drains. A. R. COAD. 14 March, 1969 [15 Dec., 1967], No. 57126/67. Heading A1B. [Also in Division El]  The surface of a duct formed in soil by a mole plough is stabilised by applying to the soil surface immediately behind the mole of the plough, as the plough forms a duct, a solution or emulsion of synthetic resin. The solution or emulsion can be sprayed onto the soil surface from a nozzle 40 and can be squeezed into or mixed with the soil by a vaned expander 16. A gas burner is housed in the foot 32 of the mole-mounting coulter 14 of the plough for heating the soil prior to the application of the solution or emulsion thereto.
Patent GB-1379033-A (GB)
Title: Catamenial appliances
IPC: A61F13/56
Filed: 1971-12-14
Abstract: 1379033 Catamenial appliances SOUTHALLS (BIRMINGHAM) Ltd 2 Feb 1972 [14 Dec 1971] 57990/71 Heading A5R A sanitary towel comprises, a flexible waterproof backing sheet 10 formed from a synthetic resin material on absorbent core 11 and a cover 12 which is shorter than the backing sheet, extending over one side and around the edges of the core and is releasably secured on the other side of the core to the backing sheet by adhesive, the core being shorter than the backing sheet and the cover which are joined by adhesive at overlapping end portions. The core and backing sheet are -joined by adhesive across the full width of the towel at its ends. Double-sided pressure-sensitive adhesive tape 13 may be fitted to the backing sheet to fix the towel to the wearer's undergarment. After use the core and cover are removed from the backing sheet and disposed of. The backing sheet may be of low density polythene, pvc, acrylic, polyamide or polyester film and the core composed of pulverised wood cellulose. The cover is a soft non-woven or other moisture pervious fabric.
Patent GB-580348-A (GB)
Abstract: 580,348. Valves. COCKBURNS, Ltd., RODGER, J., and GRANT, T. July 5, 1944, No. 12800. [Class 135] A valve seat ring 12 is secured in position by studs and nuts 13, 15, or set-screws, the nuts or heads 15 of which are accommodated in pockets or recesses 17 in a safety ring 16 which is secured to the casing by set-screws 18 projecting therethrough. Alternatively, the ring 16 may be provided with distance pieces or stays which abut against the cover-plate of the valve chest.
Patent GB-1363320-A (GB)
Title: Strip handling apparatus
IPC: G11B15/54
Filed: 1972-12-15
Abstract: 1363320 Cinematography K VOCKENHUBER and R HAUSER 15 Dec 1972 [15 Dec 1971] 58148/72 Heading G2E In apparatus where a strip is transferred from an idling full reel to a driven empty reel there is a comparator responsive to the rotational speeds of the reels which controls a torque adjuster or brake to reduce the torque or speed respectively of the full reel when there is a predetermined relative speed occurring between the reels. In the embodiment of Fig. 1 the idling full reel 1 and driven empty reel 2 are contacted by lever 6 pivoting on pin 7. Friction pads 8, 9 bear on the reels and cause the lever to pivot. At the predetermined relative speed of the reels 1, 2 the lever 6 releases a brake 10. In the embodiment of Fig. 2 the reel supporting spindles 23, 24 are coaxial. The pulley 25 is driven and carries pivot shaft 26. Springs 27, 28 have sliders 29, 30 and 36, 37 respectively. Spring 27 carries a pawl 32 selectively engageable with toothed rings 33, 34 connected to spindles 23, 24 respectively. Similarly spring 28 can move pawls 41, 42 into contact with toothed rings 39, 38 of disc 40. Thus when a supply reel is on spindle 23, pulley 25 moves in direction R. Pawl 32 engages ring 34. Spindle 23 freewheels and gears 49, which lever 46 can move to link gears 51, 52, transmit its motion  via friction disc 54 to disc 40. When the relative speeds of the reels on spindles 23, 24 reaches the predetermined level, this being sensed by sliders 36, 37, the spring 28 flexes sufficiently for the pawl 41 to engage ring 39 so causing a braking of the reel on spindle 24. When the supply reel is on spindle 24, pawl 32 engages ring 33 and the lever 46 moves gears 50 to link gears 52, 53. Thus the rotation of freewheeling spindle 24 is checked by flexing of spring 28 moving pawl 42 into engagement with the ring 38. In another embodiment, Fig. 4 (not shown) the discs 40, 54 and gears 49, 50 are replaced by a commutator disc associated with each spindle. The rotations of the spindles produces pulses generated by the commutators. The rates of the pulses may be compared electronically to provide a control function acting on the drive motor.
Patent GB-1212789-A (GB)
Title: Trigger or alarm apparatus sensitive to the appearance of a flame
IPC: G08B17/12
Filed: 1968-12-06
Abstract: 1,212,789. Fire alarms. CHARBONNAGES DE FRANCE. 6 Dec., 1968 [8 Dec., 1967], No. 58192/68. Heading G4N. [Also in Division G1] An arrangement for detecting ultra-violet radiation comprises a first detector tube having a voltage permanently across it and arranged to conduct for a preset time in response to ultraviolet radiation and means to apply a voltage to a second ultra-violet detector tube for a short period when the first tube ceases to conduct. The arrangement, which may be used to detect flames or sparks in mines, suppresses false alarms arising from spurious striking of the first detector as the second detector does not strike unless ultra-violet radiation is still present at the end of the preset time. When the first detector V 1  strikes, the pulse of duration determined by R 2 C 1  appearing at B is differentiated by C 3  and R 8  and the positive trailing edge pulse switches on transistor T 1  and hence a thyristor Th 1  to apply voltage to the second detector V 2 . If V 2  receives ultra-violet radiation during the trailing edge pulse, it strikes and, via transistors T 2 , T 3 , triggers a thyristor in the circuit of an audible or visible alarm A. The apparatus may cut off the electric power supply to an area or release water or inert dust to fight the fire.