baber/WOPTO huggingface dataset:
Patent GB-1374006-A (GB)
Title: Separation of a liquid containing charged particles or and polarizable molecules
IPC: B03C5/02
Filed: 1972-05-19
Abstract: 1374006 Liquid treatment G C YEH 19 May 1972 [20 May 1971] 23686/72 Headings C5E E9B8A E9B8X E9B8Y E9BX E7B1A2 and E7B1Y A method of separating a liquid containing charged particles and/or molecules having polar and/or polarizable properties that can be attracted by an electrostatic charge and the resulting field, comprises bringing the liquid into contact with a finely divided solid conductor in a contact zone which is capable of containing an applied electrostatic charge, and in the absence of a flow of current within said zone and inducing the formation of a double layer of the charged particles and/or molecules having polar and/or polarizable properties at or near the surface of the conductor by the application of an electrostatic potential to the solid conductor, and then separating the depleted liquid from the conductor. The solid may be in the form of a finely divided particulate matter which may be suspended in the liquid by slow agitation thereof. Alternatively the solid may be fluidized by the liquid in a bed. The solid may also be packed in a deep bed, as shown in the accompanying figure, wherein finely divided graphite is packed into a column A and fed with liquid from tank C. An electrostatic charge of desired polarity is applied from power supply B. Treated solution leaves from outlet G, and the bed may be regenerated by burning off the electrostatic charge and draining the liquid from the bed. Regeneration may also be achieved by applying an electrostatic charge, preferably of the polarity opposite to that used in the separation. Examples illustrate the separation of (a) sodium chloride from an aqueous solution, and (b) nitrobenzene from toluene.
Patent GB-1472713-A (GB)
Title: Measurement of the standardised acoustic insulation in buildings
IPC: G01H3/12
Filed: 1975-05-30
Abstract: 1472713 Measuring sound insulation TELEDIFFUSION DE FRANCE 30 May 1975 [31 May 1974] 23707/75 Heading G1G The standardized acoustic insulation D n (dB) between two rooms in a building is determined by (a) operating a noise source in a first room so that the noise, as modified by reverberation, has at a selected region of the first room an amplitudefrequency spectrum corresponding to the International Standards A-weighting curve, (b) deter-  mining the crude insulation by using an acoustic comparator (e.g. of the type disclosed in Specification 1423756 to measure the difference in the noise levels, L 1 (dB) - L 2 (dB), in the first and second rooms, (c) using the comparator to measure the difference between the power level Nw of the source and the level LR of the reverberant noise in the second room, with the source operating in the second room, (d) determining a correction value by using a nomogram comprising a family of curves relating the correction value to the latter difference and to the length of the mean free path of the noise in the second room, and (e) adding the correction value to the crude insulation value. In practice, step a is effected by feeding a white-noise signal through a band-pass filter and a frequency-weighting circuit (details given) which together give the noise a spectrum differing from the A-weighting curve by an amount sufficient to compensate for the frequency-dependent reverberation effects of a nominal "average room". A correcting circuit is then adjusted to shape the noise spectrum further to compensate for the reverberation effects of the actual first room. This adjustment is done by using the comparator to check that the noise levels in two given frequencybands differ in the selected region by a number of dB equal to the number given by the A-weighting curve for those two bands. Steps c and d in effect provide an indirect determination of the reverberation time of the second room and an insulation value correction for the reverberation effects in the second room. The noise source described is omnidirectional and comprises four loudspeakers mounted one in each hexagonal face of a casing in the shape of a tetrahedron with its corners cut off.
Patent GB-237232-A (GB)
Abstract: 237,232. Lo Cascio, L., and Bruzzone, B. July 20, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Distilling metals; dry processes of extracting, recovering, and refining metals; alloys. - The gases evolved from an externally-heated furnace for extracting copper from its alloys are passed first through a steam generator in which the waste heat is utilized and then through a filter for the recovery of zinc oxide. As shown, the crucible 3, having a discharge spout 8 for the molten metal, is first charged with a layer 16 of large pieces of firebrick, covered by a similar layer 17 of smaller pieces, and heated by a liquid fuel burner 9 which projects into the lower end of a combustion chamber surrounding the crucible, the waste gases escaping to the stack 15. When the firebrick 16, 17 is sufficiently heated the alloy is fed on to the layer 17 through the opening 19 and air, supplied through a pipe 12 by the blower 10 which supplies the burner and heated in a jacket 4, 13 surrounding the combustion chamber and the lower part of the stack 15, is delivered through the valved pipe 5. The gases from the crucible are passed through a flue 20 to a steam generator, the outlet flue 31 from which is fitted with a valve 32, Fig. 4, and delivers to a filtering device 35 comprising canvas tubes 52 encased in wire frames and connecting upper and lower chambers 34, 36. The gases passing up the tubes 52 are drawn through the canvas, on which the zinc oxide dust is deposited, by a fan 41 connected to the chamber 35 by a valved pipe 40. The outlet of the fan delivers to a stack 43 having a branch 48 communicating with a four-way valve 49, the other branches 45, 46, 47 of which connect with the atmosphere and the chambers 34, 35 respectively. A pair of filters 35 is provided so that they may be used alternately, the one not in circuit being cleaned by so setting the valve 49 that a current of air is drawn through the pipe system 45 - - 48 to agitate the tubes 52 and so deposit the zinc oxide which is removed through a door 37.
Patent GB-1255533-A (GB)
Title: Automatic firearms
Inventor: HUPP GERHARD
IPC: F41A9/00
Filed: 1969-05-09
Abstract: 1,255,533. Automatic firearm. MAUSERWERKE A.G. 9 May, 1969 [10 May, 1968], No. 23813/69. Heading F3C. An automatic firearm having a reciprocating breech block has two selectable feed devices 14, 15 fitted to the same side of the firearm and supplying cartridges to the firearm in the same direction, selector members and driving members being provided between the feed devices 14, 15. In the construction shown, one of the selector members which comprises a pin 16b is slidably mounted in the end of an operating lever 16 so that it may be displaced towards the selected feed device 14 or 15 by an ammunition selector lever (22, Figs. 1, 3, not shown), the pin then engaging in a selector groove 14f (15f, Fig. 3, not shown), of the feed devices 14, 15 respectively. The feed devices each comprising a feed slide 14d, 15d having the groove 14f (16f), a  feed pawl 14c, 15c and guides 14e, 15e for the slide are driven by the operating lever 16 from a gear arrangement which itself is driven by a rotatable sleeve 19. The sleeve 19 is driven in rotation by a projection of a forwardly biased sleeve working in a cam slot of the sleeve, the projection also co-operating with the reciprocating breech-block (Fig. 1, not shown).
Patent GB-611726-A (GB)
Title: Improvements relating to diffusers, especially of centrifugal compressors, and control thereof
IPC: F04D27/02
Filed: 1945-09-14
Abstract: 611,726. Fluid-pressure servomotor-control systems. POWER JETS (RESEARCH & DEVELOPMENT), Ltd., and OGSTON; W. M. Sept. 14, 1945, No. 23830. [Class 135] [Also in Group XXVI] In a gas turbine plant with a centrifugal compressor having a plurality of tangential diffuser ducts, the entry area of each duct is adjustable in accordance with the mass flow. The variation may be effected by means of a flexible steel strip 2, Fig. 2, forming part of the diffuser wall which is distorted by a synthetic rubber pressure cell 3. Or, the tip 1A may be pivoted to the main wall and all the tips controlled by a rotary multiple cam. The control may include a diaphragm 5, Fig. 4, subjected on opposite sides to the pressures at the entry to the diffuser channel and at a selected point up-stream from that entry. A piston 8 follows the movement of the diaphragm and controls the supply of pressure fluid to all the cells 3. The movement is controlled by a lever 14, loaded by springs 13 and having a pivot 15, the position of which is determined by a barometric capsule 16. In a simpler form the parts 13-16 are omitted. To secure exact equality in the movement of the flexible wall strips 2, the piston 8 controls the supply of pressure fluid acting upon a piston 20, Fig. 5, by which individual capsules 22, each connected by a pipe 23 to one cell, are varyingly compressed between a cross-head 21 and a base-plate and the cells 3 are correspondingly dilated. The rotary cam operating the pivoted wall tips may be operated solely by a barometric capsule acting through a servomotor..
Patent GB-267989-A (GB)
Title: Improvements in and relating to apparatus for intermittently introducing plates or other articles into solutions and withdrawing them therefrom
IPC: G03D3/10
Filed: 1925-09-24
Abstract: 267,989. Mills, K. S. Sept. 24, 1925. Microscopes. - Apparatus for passing plates or other articles, (e.g. microscopic slides or photographic plates) through successive baths comprises a rotated screw rod d, Fig. 3 (a plan view), along which the carriers r for the article travel, and a parallel stationary bar j, which is fitted with a series of lift plates or ramps l positioned so as to engage the carriers and lift the articles over the walls of successive tanks p. Articles such as microscopic slides q, Fig. 7, may be held on the carrier r by a rubber band s. The curved ends of the carrier engage the threads of the screw rod d. The rod d has a stationary collecting end h on which the screwed rod d is journaled. A particular series of baths for staining microscopic slides is specified.
Patent GB-1315421-A (GB)
Title: Sheet handling apparatus
IPC: B65H5/08
Filed: 1971-04-19
Abstract: 1315421 Cutting INTERNATIONAL BUSINESS MACHINES CORP 19 April 1971 [20 March 1970] 24006/71 Heading B4B [Also in Division B8] Apparatus for treating tabulating cards 10 &c., comprises a conveyer 12 having uniformly spaced grippers 11 for retaining a card edge, transport means 20 carrying uniformly spaced card receiving pockets 46, means for registering successive cards 10 carried by the conveyer 12 in successive pockets 46, a work station, Fig. 1, at which the grippers 11 and pockets 46 move at equal velocities and means 23 for performing an operation on successive cards 10 moving through the work station, e.g. to cut bevelled corners. Cards 10 enter the work station on the conveyer 12, trained around wheels 13, 14, each card 10 being engaged by the pocket 46 of a respective tool unit 23 as the unit 23 advances around a lower transport means supporting pulley 22. As each card 10 rises, a tail 11b of the respective gripper 11 engages a cam surface 16, releasing the leading edge of the card 10. Each tool unit 23 compromises blade members 33 pinned to supporting members 38, Fig. 8, and as the unit 23 rises with the card 10, rollers 36 of the members 38 engage a cam surface 41a to draw a cutting edge 33a of each member 33 across a spring-urged counter blade 31. Corners of the card 10, which project through bladeforming apertures 34 of the members 33, are thus sheared off. Beyond the cam surface 41a the members 38 are reset by a reset cam 54, the cards 10 being re-engaged for removal by the grippers 11 as the tails 11b advance beyond the cam surface 16.
Patent GB-462296-A (GB)
Title: Improvements in the manufacture and production of imino-polymethine dyestuffs
IPC: C09B23/10
Filed: 1935-08-28
Abstract: Iminopolymethine dyes are prepared by reacting N-acyl compounds of heterocyclic compounds containing only nitrogen as the hetero atom which are wholly or partially hydrogenated in the ring containing nitrogen and contain therein a secondary nitrogen atom in about equimolar proportions with indolines which have a reactive methylene group in a -position to the nitrogen atom in the presence of a condensing agent containing halogen comprising phosphorus halides or phosgene.  Reaction is preferably carried out in a solvent in the cold.  Suitable starting materials are formyl, acetyl, propionyl or benzoyl derivatives of 1.2.3.4-tetrahydroquinoline, 2.3-dihydro-a -methylindole, dihydro-a -phenylindole, 2.2.3.3-tetramethylindoline and 1.2.3.4.10.11-hexhydrocarbazole; these may be prepared by heating the bases with the appropriate acids, acid anhydrides or acid chlorides.  The products dye tannin - mordanted cotton or acetate artificial silk.  In examples: (1) N-formyl-a -methylindoline is condensed in benzene with 1.3.3-trimethyl-2-methyleneindoline in presence of phosphorus oxychloride, and with 5-methoxy-1.3.3-trimethyl-2-methyleneindoline in presence of phosgene or phosphorus oxychloride; (2) N-formyl-1.2.3.4-tetrahydroquinoline is condensed in benzene with 1.3.3 - trimethyl - 2 - methyleneindoline in presence of phosphorus oxychloride; 5 - methoxy - 1.3.3 - trimethyl - 2-methyleneindoline may similarly be condensed with this quinoline derivative; (3) N-formyl-1.2.3.4.10.11-hexahydrocarbazole is condensed in benzene with 1.3.3-trimethyl-2-methyleneindoline in presence of phosphorus oxychloride; (4) N-acetyl-dihydro-2-methylindole is condensed with 1.3.3 - trimethyl - 2 - methyleneindoline in presence of zinc chloride and phosphorus oxychloride; (5) N-acetyl-1.2.3.4-tetrahydroquinoline is condensed with 1.3.3-trimethyl-2-methyleneindoline in presence of zinc chloride and phosphorus oxychloride; (6) N - propionyl - dihydro - 2 - methylindole is condensed with 1.3.3-trimethyl-2-methyleneindoline in presence of zinc chloride and phosphorus oxychloride.
Patent GB-1314371-A (GB)
Title: Process for the manufacture of a carpet with pile that is vertically lined up in rows and with ribbon-shaped interlayers which run through part of the height of the pile and are attached to thet rows of pile
IPC: D04H11/00
Filed: 1970-05-19
Abstract: 1314371 Pile fabrics R REINHARD 19 May 1970 [21 May 1969] 24189/70 Heading D1K A pile fabric is made (Figure 2) by attaching pile material 1 to the side of a ribbon 3 and then attaching adjacent ribboned pile to each other (Figure 1). In a continuous process (Figures 3, 7) fibres 1 from a beam are laid transversely across a conveyor 2 onto which are laid a number of ribbons 3 spaced apart across the width of the conveyor. Take-up rolls 4 feed the batt and ribbons to a table where it is severed into lengths by a transverse knife 6. A transportation device 7 then moves each length past a segmented roller 8 which coats with adhesive those portions of the fibres 1 which are adjacent to and on the opposite side of the ribbons 3. The device 7 then stacks the batts in a press 9 which consolidates them and produces a block of carpeting (Fig. 7) which is then severed into separate carpets along lines 11 in the centres of the ribbons 3 and 11a in the fibres between the ribbons. In Figure 5 (not shown) a ribbon is coiled to produce a circular carpet and in 6 (not shown) ribbons are coiled side-by-side on a rotating drum to produce carpeting which is subsequently cut into separate lengths. The tuft material may be of various kinds, examples of which are given.
Patent GB-654280-A (GB)
Title: Improvements in and relating to the manufacture of carburetted water gas
Inventor: WILLIAMS NORMAN HENRY
IPC: C10J1/213
Filed: 1948-05-16
Abstract: 654,280. Carburetted water gas. HUMPHREYS & GLASGOW, Ltd. Sept. 16, 1948, No. 24351. [Class 55(i)] In the manufacture of carburetted water gas using heavy oil, the fuel, before it reaches the level in the generator at which the oil is sprayed on to it, is preheated during a period including at least one complete uprun oil spraying phase by passage through it of hot uprun make gases and of hot blow gas and during the blow phase or phases of that period by combustion of blow gas with secondary air in contact with or in close proximity to the fuel being preheated, either before or after passing through it. The figure shows the upperpart of a generator to which the invention. is applied. A circular grate 10 rests on: blocks 12 projecting from the generator lining and supports the central portion of a mass of temporarily stored fuel, the marginal portion of the mass resting on the main bulk of fuel in the generator proper. Oil is sprayed in the space under the grate through a pipe 14. During the uprun, hot process gas passes through and preheats the stored fuel, whilst during the blow, the hot blow gases pass through the fuel, fur-- ther preheating being obtained by admitting secondary air through ports 16 to cause combustion in contact with the fuel on the: grate.
Patent GB-952188-A (GB)
Title: Improvements in or relating to safety belt assemblies
IPC: B60R22/347
Filed: 1960-07-14
Abstract: 952,188. Safety belts. J. Y. A. SELLMAN. July 14, 1960 [Aug. 6, 1959], No. 24530/60. Heading A3V. [Also in Division B8] A vehicle safety belt 8 is attached to a drum 3 on to which it is wound by the action of a spring 5, the drum being lockable by the engagement of flats 31 (Fig. 2) thereon with the narrow end 72 of keyhole slots 71 in a locking member 7, which member is urged towards its locking position by springs 18. Locking member 7 is U-shaped with the keyhole slot in the arms of the U and the base of the U providing means which when depressed against the casing 1 of the drum mechanism unlocks the drum for rotation. The casing is secured to an anchorage in the vehicle, either permanently or detachably, by use of the attachment member 10, and the buckle 9 at the belt end is used to secure the latter either directly or by way of a chain 14 (Fig. 6, not shown) to another anchorage on the vehicle.
Patent GB-759271-A (GB)
Title: Improvements in or relating to pre-fabricated building structures
IPC: E04B1/24
Filed: 1953-09-05
Abstract: 759,271. Buildings. WANE, M. Oct. 7, 1954 [Sept. 5, 1953], No. 24615/53. Class 20(1). A prefabricated building has corner &c. posts 26 having a recess 27, Fig. 6, for one corrugated iron wall panel 21 and another recess at right angles to receive another (door) panel 24. The posts 26 also support the roof as in Fig. 4 by acute angled members 39, Fig. 9. The panels 21 &c. have edge channel irons 32 which fit into the recesses in the posts. In Fig. 7 the edge channels 32 of door panels 24 have lugs 34 forming part of their hinges. Adjacent edge channels 33 of the panels are overlapped by another channel 35 through which projects a lug 36 for a padlock.
Patent GB-986351-A (GB)
Title: Method of preparing parchment paper
IPC: D21H17/65
Filed: 1961-07-07
Abstract: Paper is parchmentised by treatment with sulphuric acid, which may be more dilute than that customarily used, first at a temperature between 10 DEG  and -50 DEG C. and then at a temperature above 12 DEG C.  The paper may be passed through cold sulphuric acid at, e.g.-20 DEG C. and subsequently through another acid bath at higher temperature, e.g. 20 to 25 DEG C.
Patent GB-893814-A (GB)
Title: Improvements in or relating to writing instruments and parts thereof
Inventor: HANS REINHARD FEHLING ERIC CHA
IPC: B43K1/08
Filed: 1957-08-06
Abstract: 893,814. Reservoir pens. D.C.B. Ltd. Aug. 6, 1958 [Aug. 6, 1957], No. 24751/57. Class 146(3) A ball-point pen nib 1 is moulded or die-cas<SP>t</SP> so that the base seating for the writing ball is constituted by a circular series of spaced mounds or projections 2, the spaces 3 between adjacent mounds &c. forming ink channels to permit flow of ink around the rear of the ball. The mounds &c. 2 may be of conical or frusto-conical form, and may either be pre-shaped to form seating surfaces, or may be deformed by the ball to form seatings during the peening &c. process of the nib tip. The nib carcass may be composed of tin-alloy, nylon, or other deformable material which can be moulded or die-cast. As shown in Fig. 5, apparatus for forming the nib 1 comprises a mould member 7 and two co-axial opposed core pins 9, 10, the pin 9 having five conical depressions 11 spaced in a circular series around the pin to form the mounds &c. 2. The depressions 11 may be formed in the pin 9 by a spark erosion process, a lapping or grinding process, or by an ultrasonic percussion process (Figs. 6-8, not shown), using mountings for the pin which can be accurately indexed. The base and lateral sealings for the writing ball may be formed separately.
Patent GB-843807-A (GB)
Title: Improvements in or relating to the production of covering layers on plane surfaces of buildings
IPC: E04D15/06
Filed: 1958-07-31
Abstract: 843,807. Coating surfaces with sheets. MEYNADIER & CIE A. G. July 31, 1958 [July 31, 1957], No. 24762/58. Class 93. A flat roof or other plane surface of a building is covered by a sheet of flexible material, which is coated on at least one side with a thermoplastic sealing composition, by unrolling a strip of the flexible material, heating it and the surface upon which it is to be laid and pressing into position with the aid of rollers. As shown a strip of roofing felt is wound on to a roller 17 which is mounted on the frame 1 which is supported at the front by wheels 13, preferably pneumatically tyred, and a roller 23 at the rear. The surface (e.g. a flat roof) to be covered and the covering material (e.g. roofing felt) are heated by the burner tube 33 supplied with fuel from the tank 50 through pipes 51 and 37, and the roll of material is tensioned by the rollers 28 mounted on sprung arms 26. The angle of the burner jets 34 to the horizontal may be varied by means of the lever 32 operated through an eccentric 39 and handle 52 and the lever 32 is also coupled to the arm 26 so that adjustment, is automatically made as the diameter of the roll of material on roller 17 decreases. A shield 45 is brought in front of the burners once every revolution of the wheel 13 by. means of the arm 44, roller 47 and cam 46 thereby leaving strips of the sealing material unsoftened leaving transverse strips of the material not secured. Shields 36 disposed in front of the burners cause longitudinal strips not to be secured and the resultant criss-cross of unsealed portions serves for ventilation. The roller 23 at the rear of the machine presses the strip into position and is divided into sections with bevelled ends 24.
Patent GB-897189-A (GB)
Title: Improvements in or relating to fuel elements for nuclear reactors
Inventor: KNIGHTS HERBERT CHILVERS
IPC: H01R24/38
Filed: 1958-08-01
Abstract: 897,189. Two-part couplings. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. July 24, 1959 [Aug. 1, 1958], No. 24802/58. Class 38 (1) [Also in Group XL (a)] A nuclear fuel element carries on one end contact rings 16 and on the other end corresponding contact members. The ring shown has two contact surfaces 17a, 17b of Ni- or Ptplated stainless steel separated by ceramic ring 18 and mounted in ceramic spacers 19; leads to the ring are insulated by ceramic beads and a filling of MgO powder. The contact members are similarly mounted and consist of spring arms 32 with Be- or Rh-plated contacts 33. Fig. 4 shows a shield plug with contact rings 43 arranged to make contact with pairs of sprung contacts 44. These arrangements allow thermocouples on the fuel to be connected to instruments outside a nuclear reactor.