baber/WOPTO huggingface dataset:
Patent GB-1379283-A (GB)
Title: Separation of lactam from a medium containing concentrated  sulphuric acid or sulphuric acid and sulphur trioxide
IPC: C07D201/16
Filed: 1972-05-05
Abstract: 1379283 Separation of lactams STAMICARBON NV 5 May 1972 [7 May 1971] 21136/72 Heading C2C Lactam is separated from a strongly acid medium of sulphuric acid, or such a medium which additionally contains free sulphur trioxide, by partially neutralizing the strongly acid medium containing lactam with a recycled mother liquor containing ammonium sulphate whereby in the resulting solution the molar ratio (NH 4 ) 2 SO 4 /(NH 4 ) 2 SO 4 +H 2 SO 4  is between 0À4 : 1 and 0À6 : 1, extracting the lactam from the said resulting solution, decreasing the acidity of the remaining solution of ammonium sulphate and sulphuric acid with gaseous ammonia, and crystallizing from the resulting solution ammonium sulphate or tri-ammonium hydrogen sulphate and separating the crystals from the solution in an amount corresponding to the amount of sulphuric acid in the initial lactam/ sulphuric acid medium, and recycling the remaining mother liquor to dilute the strongly acid medium containing lactam. The lactam may be extracted, e.g. with chloroform at temperatures of 20-40‹ C. The process is illustrated by a flow diagram, and in examples solutions of caprolactam obtained by the Beckmann rearrangement are treated.
Patent GB-1479539-A (GB)
Title: Sintered products
IPC: C03C3/091
Filed: 1975-05-19
Abstract: 1479539 Glass-metal sinters CARL-ZEISSSTIFTUNG [trading as JENAER GLASWERK SCHOTT & GEN] 19 May 1975 [21 May 1974] 21148/75 Heading ClM [Also in Division C7] A sintered product including copper or a copper alloy in a glass matrix together with copper oxide and optionally, one or more oxides of metals of Groups IVa, Va and VIa of the Periodic Table, may be used for a variety of applications ranging from a conductive coating, a surface protection, a bonding agent between glass or ceramics and metal, as solid friction elements in braking mechanisms or as wearresistant sliding materials, each application being dependent on the glass/metal/oxide ratio. The preferred compositions contain 0À8-8% by weight CuO, with 0À8-10% of the added metallic oxide, and the glass : copper ratio is about 1 : 3 by weight. The glass, which may contain SiO 2  55À2%; B 2 O 3  2À5%; Al 2 O 3  26À7%; alkaline earth oxides 15À6%; may be mixed with the CuO and other oxides prior to fusing and grinding, or the additions may be ground up with fused glass or the glass, metal and oxides may be ground together, and after the addition of the binder, e.g. paraffin, may be pressed into a block which is sintered in a reducing atmosphere at up to 1000 C. after predrying. Graphite may be added to the mixture before sintering to improve the sliding and wear characteristics of the compound. The addition of the oxides of the Groups IVa, Va or VIa metals, i.e. TiO 2 , ZrO 2 , V 2 O 5 , Nb 2 O 5 , Ta 2 O 5 , MoO 2  or WO3 significantly improve the bending strength of the glass/metal/CuO sintered compact, even in the presence of graphite which normally would lower the bending strength.
Patent GB-610822-A (GB)
Title: Improvements in or relating to methods of and apparatus for coating an elongated body or wire
IPC: B29C48/06
Filed: 1945-08-20
Abstract: 610,822. Coating wires &c. OLIN INDUSTRIES, INC. August 20, 1945, No. 21193. Convention date, Dec. 12, 1942. [Class 140] [Also in Group V] A wire or other elongated body 1 is drawn downwardly through a column of plastic material 8 in a heated chamber 6, and passes through a central hole 20 in a guide member 19 having apertures 21 surrounding the hole 20. The plastic material sticks to and is carried along by the wire in the upper part of the chamber 6, but is stripped from the wire as the latter passes through the hole 20; the material then passes through the apertures 21 and is re-united to the wire below the guide member 19, the coated wire issuing from a die 12. The wire entering the chamber 6 may be cooler than the plastic material, which then solidifies around the wire and exerts a piston-like action. The plastic material, in granule, rod or strip form is forced through a heated zone by a worm feed. gear pump or piston and thence through an orifice 10 into the chamber. The wire is drawn from supply reel 2 and, after cleaning and straightening if necessary, passes over a grooved heated drum 3, through a heating tube or oven 4, and through chamber 6 and die 12. The coated wire then passes through a cooling tube 24 (water spray or cool air or water), around sheave 25, over capstan 26 which is rotated at constant speed, to take-up reel 27. The wire is centred by adjusting the sheave 25. The preheating of the wire may be omitted. An alternative form of wire guide 19, Figs. 7 and 8 (not shown), is described. When the plastic material contains solvent, the cooling means 24 may be preceded or replaced by means for removing solvent, e.g, a heated tube through which warm air or other fluid is circulated. Two or more wires may be coated simultaneously in a single sheath. A number of units may be placed side by side, and individuallysheathed wires may be united, as by twisting, on emergence from the dies.
Patent GB-1109692-A (GB)
Title: Improvements in platform weighing machines
Inventor: FLUESTER JAMES FREDERICK
IPC: G01G19/46
Filed: 1964-05-22
Abstract: 1,109,692. Weighing apparatus. HOLLANDS & BLAIR Ltd. May 24, 1965 [May 22, 1964], No. 21213/64. Heading G1W. In a platform weighing machine in which a platform is supported by levers 23, 24 from a base 15 of a casing and arranged on being loaded to move the levers against the force of a calibrated spring 5 and to actuate an indicating mechanism comprising a rack and pinion device 3, 10 so that an indication is obtainable of the weight of the load, the indicating mechanism is mounted on a rigid beam 1 of inverted channel-shaped crosssection, formed integrally with the base and extending from one end of the base to the other. The beam 1 may be secured to a further rigid beam 18 to form a T-like beam assembly, the beam 18 being secured to walls 15a of the casing and providing supports for the levers 23. The rack 3 which is biased by a spring 8 is pivoted to a bell-crank lever 2 which is pivoted on the beam 1 and which bears on a plate 13 attached to the spring 5, the plate 13 acting as a support for the levers 23. A spring 16 may be mounted on the beam 1 which may be bowed between its ends and arranged to prevent excess movement of the rack 3 when a load is removed from the platform. The pinion is attached to a weight indicating dial 9 which is viewed through a window in the platform.
Patent GB-839323-A (GB)
Title: Joint between metal members
IPC: E04B1/58
Filed: 1956-07-09
Abstract: 839,323. Structural joints. KLEIN, B. July 9, 1956 [July 9, 1955], No. 21223/56. Class 20(2) [Also in Groups XXII and XXVIII] In a joint between beams 29, 30 of different width, in which one end of the beam 29 enters a metal socket 16 joined, e.g. welded to both members, the socket has an outwardly flared inner surface 19 with which the first member as it bends under increasing transverse load progressively comes into contact. In Fig. 5, to beams 20, 29 joined by a socket 21, is welded a fishplate 22 having sockets 23-25, in which beams 26-28 are welded.
Patent GB-838190-A (GB)
Title: Improvements in or relating to struts for mine arches
IPC: E21D11/28
Filed: 1958-07-03
Abstract: 838,190. Mine roof supports. PAURAT, F. W. July 3, 1958 [Nov. 30, 1957], No. 21285/58. Class 20(2) Struts 1 are connected to each other and to mine arches 2 by a loop of steel rope 3 which passes over projections 5 on the struts or over one projection 5 and a clamp on the other side of the arch (Fig. 1, not shown) refers.
Patent GB-1109835-A (GB)
Title: Improvements in or relating to dial-reading instruments
Inventor: HOWARD REGINALD CHRISTOPHER
IPC: G01D11/30
Filed: 1964-05-22
Abstract: 1,109,835. Dial gauges mountings. G. H. ZEAL Ltd. May 20, 1965 [May 22, 1964], No.21294/64. Headings G1D and G1J. A dial-reading instrument has a head 10 carrying a dial 11 and an indicator 12, a condition e.g. temperature responsive element 14, and a connector 15 between the element and the head, wherein the head is mounted on a universal joint permitting it to be rotated about two perpendicular axes, a stop 25 Fig. 2 (not shown) limiting rotation of the head about the axis normal to the plane of the dial to not more than 360‹ in either direction, and the universal joint is spaced from the back of the head by a distance sufficiently great to permit the connector to be twisted through up to 360‹ without damage thereto. In the embodiment illustrated the needle 12 is actuated by a flexible pipe 15 from a temperature responsive bulb 14, the pipe and bulb being enclosed in a rigid cover 16. The cover 16 is secured to a tubular support 17 with a pronged fork end 18 to which is pivoted another fork end 20. The support 17 is adapted to be secured in a bracket in which it is rotatable. The two fork ends provide a pivotal movement about a horizontal axis. Rotation about a vertical axis is provided by a spigot 22 rotatable within the stem 21 with a pin 24 on the stem engaging a groove in the spigot, the movement being restricted by a stop 25.
Patent GB-627846-A (GB)
Title: Improvements in air separators
IPC: G01F15/08
Filed: 1946-07-16
Abstract: <PICT:0627846/III/1> Apparatus for separating air from liquids comprises a container having an inlet 3 and an outlet 4, a plurality of vertically - spaced superimposed diaphragms 11 between said inlet and outlet, each diaphragm having one or more air vents 12 each of which, except that in the uppermost diaphragm, registers with an air vent in the diaphragm above it, and an air vent valve above the nest of diaphragms actuated by the liquid level in the container, the arrangement being such that separated air is discharged successively upwards through the air vents and ultimately passes through the air vent valve.  In operation, liquid enters through the inlet 3, then through a pair of ducts 6, thence through strainer 7, a perforate plate 18, along the diaphragms and finally leaves through an outlet duct 10 and the opening 4.  The air vent valve mechanism is enclosed in a dome 22 and comprises a hollow ferrule 24 screwed into the top of the dome, a valve seat 26, a <PICT:0627846/III/2> tube 27 slidable upon a shank 25 of the ferrule 24 and a valve seat washer 29 held in position by a plug 28 which is screwed into the tube 27.  The tube 27 has a number of ports 27A therein.  A cross-bar 30 forms part of a float and is attached to the slotted bottom end of the plug 28.  Lugs 32 serve as guides for the float. Air separated from the liquid passes up through the air vents 12 and collects above the nest of diaphragms, and this depresses the float and so opens the valve whence the air passes through the ports 27A and thence through the hollow ferrule 24.  When the air is discharged, the float rises and closes the valve mechanism.  In a modification (Fig. 6, not shown), the container is cylindrical and the liquid flows radially from the centre of the container or separator outwardly.
Patent GB-647154-A (GB)
Title: Improvements relating to bottle caps
IPC: B65D41/14
Filed: 1947-08-06
Abstract: 647,154. Bottle caps. MID - WEST BOTTLE CAP CO. Aug. 6, 1947, No. 21470. Convention date, March 4, 1946. [Class 125(iii)] A cap for dairy bottles comprises in combination a hood of metal foil 10 capable of ready distortion with the bare fingers of the user for removal from the bottle, the hood 10 being shaped to span the mouth of the bottle and having peripheral portions adapted to be crimped or folded against the outer side of the bottle, an absorbent liner 16 substantially coextensive with and attached to the inner side of the hood, and a layer of micro-crystalline wax 30 interposed between the foil and the liner, the wax being displaceable under capping pressure into the crevices coursed by the folding &c. of the peripheral portions so as to close up the openings in the folds &c. The liner which is preferably of about 0.001-0.0025 inches thick, as is the foil, may be partly impregnated with ceresive wax so that it is capable of absorbing liquid and expanding to a limited degree. A separate disc of cardboard &c. 7 may be inserted to form a closure interiorly of the neck of the bottle.
Patent GB-442265-A (GB)
Title: Improvements in woven material
IPC: D03D1/00
Filed: 1935-07-29
Abstract: 442,265. Woven bead chain fabrics &c. BEAD CHAIN MANUFACTURING CO., Bridgeport, Connecticut, U.S.A. July 29, 1935, No. 21501. Convention date, Aug. 11, 1934. [Class 142 (iv)] An ornamental fabric for ladies' belts, handbags, &c. comprises fibrous wefts 4 interwoven with warp strands 2 of cotton, linen, rayon or silk and with bead, ball or shot chain warps each comprising a flexible chain 1 of metallic beads or balls 1<a> and metallic connecting links 1<b>. There may be two or other number of strands 2 between adjacent chains and beads of different metals or colours, and warp and weft strands of different colours or materials may be used. At each side chain 1, the weft thread only engages alternate links.
Patent GB-169333-A (GB)
Title: Improvements in sash-window fasteners
IPC: E05F11/00
Filed: 1920-07-19
Abstract: 169,333. Clinkard, W. H. July 19, 1920. Rattling of windows, preventing.-In a fastener for holding sashes in the closed or open positions in which a shoe D fitted on the inner end of a screw A mounted in a bracket B on one sash is adapted to press against the upright bar E on the other sash, means are provided for instantaneously adjusting and releasing the locking screw. The spring-pressed block G, mounted in the bracket B, has a threaded upper surface to engage the screw A, which can be released by depressing the block G by means of the pin R' and automatically retracted by the spring M. In a modification, Fig. 4, the teeth of a worm-wheel O, pivoted in the bracket B, engage the screw A, the wheel being preferably acted upon by a coiled spring O<1> and adapted to be locked by a detent P. The bar E is recessed at the bottom to admit the slide D with the sashes in the closed position, and a metal plate F may be provided for the shoe to bear upon.
Patent GB-682635-A (GB)
Title: Phase-contrast microscope
IPC: G02B21/14
Filed: 1950-09-01
Abstract: 682,635. Microscopes. ZEISS-OPTON OPTISCHE WERKE OBERKOCHEN GES. Sept. 1, 1950 [Sept. 2, 1949], No. 21684/50. Class 97 (i). In a phase-contrast microscope the condenser diaphragm has apertures in the shape of sectors of a circle arranged with a common centre as in a circle and the phase plate is similarly shaped so that they may both be used with objectives of differing magnification. The condenser diaphragm may have a fixed odd number of apertures, e.g. three, or may, as shown, comprise discs 2, 3 having sector-shaped apertures and rotatable in opposite directions by gears 5 to vary the width of the apertures to suit the particular object to be illuminated. The discs may also rotate together about the axis AA to adjust the position of the image of the sectors relative to the phase plate. Alternatively the sector apertures of the diaphragm may be fixed, the illumination being varied by an iris diaphragm adjacent thereto.
Patent GB-650526-A (GB)
Title: Improvements in rotary wing systems for aircraft
IPC: B64C11/00
Filed: 1947-08-15
Abstract: 650,526. Propellers. OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AERONAUTIQUES (O.N.E.R.A.). Aug. 15, 1947, No. 21751/49. Convention date, May 15, 1944. Divided out of 650,460. [Classes 4 and 114] A propeller producing a force perpendicular to its axis, in addition to axial thrust, cornprises one or more pairs of aligned blades 1, 1a which are arranged to reciprocate in a casing 3 as the propeller revolves. As shown, reciprocation of the blades 1 is effected by a crank 14 integral with the driving shaft 15, the crank engaging an eccentric 13 freely rotatable in an annular member 12 to which the propeller blades are attached.
Patent GB-301965-A (GB)
Title: Improvements in and relating to automatic brakes for railway goods vans
IPC: B61H11/02
Filed: 1928-05-17
Abstract: 301,965. Smyth, C. J. May 17, 1928. Actuated by backward pressure of tractor or relaxation of pull or push.-Brake mechanism for railway vehicles of the kind in which the brakes are applied upon relaxation of the pull on the draw-bar comprises brake beams 3 urged by springs 4 to force brake blocks 2 against the wheels and are withdrawn by cables 6, 7 connected to the beams and the draw-bar. The cables 7 run over pullies 8. To render the mechanism inoperative bars 10 each mounted on a spindle 11 extending into the vehicle are adapted to be turned to engage each pair of brake beams 3 and hold them apart against the action of the springs with the brake blocks out of contact with the wheels. A second set of cables may be provided for permitting similar operation of the brakes in the reverse direction of running. Specifications 2298/84, 2003/85, 24442/97, 12838/05, and 110,767 are referred to.
Patent GB-738709-A (GB)
Title: Improvements relating to the regulating of fuel-injection-type internal combustion engines operated with exhaust-gas turbo-super-charging
IPC: F02D1/00
Filed: 1953-08-07
Abstract: 738,709. Governor transmitting mechanism. DAIMLER-BENZ AKT.-GES. Aug. 7, 1953 [Aug. 7, 1952], No. 21891/53. Class 57. [Also in Group XXVII]  The control member 24 of the fuel-injection pump of an internal-combustion engine is actuated by a centrifugal governor 14 through a lever 17 pivoted on a rod 25 connected to a manual control lever 26 and connected by links 18, 19 to a cam 21 contacting a cam-follower 22 on the control member 24. The cam 21 is so contoured that at any given position of the lever 26 the quantity of fuel injected and the engine torque have a maximum value in an intermediate speed range and are decreased gradually with increasing engine speed up to maximum engine speed.
Patent GB-626957-A (GB)
Title: Improvements in or relating to apparatus for collecting and loading refuse
IPC: B65F3/08
Filed: 1946-07-23
Abstract: 626,957. Refuse vehicles. ALLCHURCH, S. July 23, 1946, No. 21935. [Classes 78 (ii), 78 (iii) and 78 (iv)] Refuse is loaded into the main chamber 15 of a refuse collecting vehicle by a cradle 30 adapted to carry a bin 31 and traversable on inclined guides 28 on the body of the vehicle, the cradle 30 and bin 31 being tipped on reaching the upper ends of the guides so as to push open a flap 19, hinged at 20 to the body, against a spring 21, a gate 25 in the flap then opening by gravity to permit the contents of the bin to fall into the chamber 15. The cradle 30 runs on the guides 28 by means of rollers 29 and is provided at its upper ends with claws 66 which, when the cradle is hoisted, engage trunnions 67 on the lower end of the shutter 19 so that the wire ropes 43 for hoisting the cradle tip it about the trunnions 67 which are so shaped that they will not disengage the claws 66 while the cradle is tipped. The cradle 30 is further guided during tipping by lateral arms 49 to which the ropes 43 are secured and which engage in slots 70 in the hooded loading compartment 16, while the mouth of the bin engages a suitable lip on the shutter 19. Hooks 68 on the cradle engage handles 69 on the bin to hold it in position. The opening in the shutter 19 through which discharge takes place may be shaped to permit passage of the hinge on a bin having a lid. The wire ropes 43 are fastened to pulleys 41 turned by an endless chain 34 reciprocated by a hydraulic ram, electrically or otherwise, and two sets of guides, cradle &c. independently operable by separate rams each controlled by a lever at the corresponding side of the vehicle may be disposed side by side on a rear door 12 of a vehicle, the door being hinged at 14 to permit discharge of the chamber 15. A load spreading member 65 is operated by endless ropes 51 simultaneously with each cradle.
Patent GB-299555-A (GB)
Title: Improvements in electric lighting and like systems having a constant voltage load and a variable voltage source of supply current
IPC: H02J7/18
Filed: 1927-08-20
Abstract: 299,555. Ferguson, T., Johnstone, J. R., and Metropolitan-Vickers Electrical Co., Ltd. Aug. 20, 1927. Regulation, automatic. - A train lighting system, Fig. 1, includes a relay 18, which operates to change the setting of a voltage regulator 22 when the dynamo current is excessive. In operation, as the voltage of the dynamo 1 increases, coil 7 of a cut-in switch causes contacts 10, 12 to be bridged, a further rise of voltage causes the armature 30 to rise still further, against the action of a spring 17, and under the influence of the winding 7 and a series winding 8, to move a switch member 14 away from contact 15 and towards a contact 16 and so to insert a resistance 4 in the lamp circuit 3 and to connect the voltage regulator 22 in series with a resistance 23 across the lamp circuit. The regulator 22 now maintains contant voltage across the lamp circuit. Should the battery be badly discharged &c., an excessive current flows through the relay 18, causing its armature 24 to close its contact 25 and short-circuit a portion of the resistance 23, thereby causing the regulator 22 to lower the voltage of the dynamo. The relay 18 will vibrate and maintain constant current. The relay 18 may be placed in the battery circuit instead of in the generator circuit. Also the end of the resistance 23 may be connected to the contact 10, and a switch 13, working in conjunction with the lamp switch 5, be connected to the contact 16. Fig. 2 shows an arrangement of cut-in relay, which also has mounted on it the armature 24 and contact 25. The armature 24 is operated by leakage flux and so this one relay combines both functions. The bottom of the armature 30 engages a conical cup 44 which acts as a centring device. Specification 229,827 is referred to.
Patent GB-247851-A (GB)
Title: Improvements in or relating to swings
IPC: A63G9/12
Filed: 1925-09-03
Abstract: 247,851. Wicksteed, C. Sept. 3, 1925. Swings.-The travel of a swing is limited by means of a frictional braking device or devices operating between the swinging portion of the structure and the fixed portion. As shown in Fig. 3, cams 14, 15 connected to the axle 10 engage curved surfaces on a weight 16 slidably mounted on rods 18 on a bracket 17. In a modification, the weight 16 may be spring-urged so as to exert a greater braking effort. The invention is described in connection with plank swings, and in Fig. 2 it is shown applied to a swing in which a plank 30 is suspended bv rods 31 from two axles 28. Pairs of weights 16 at each end of the axles may be connected by rods 19.