baber/WOPTO huggingface dataset:
Patent GB-113388-A (GB)
Title: Improvements in and relating to Apparatus for Promoting Circulation of Water in Lancashire and other Multiple Flue Boilers.
IPC: F22D7/02
Filed: 1917-06-08
Abstract: 113,388. Perfecta Boiler Circulator, Ltd., Ayers, P. C., and Josling, H. W. E. June 8, 1917. Partitions and baffles in water space.-To an upwardly sloping plate 3 fitted above the flues or furnace chamber 2 to promote the water circulation are secured longitudinal depending side plates 4 and a number of comparatively deep intermediate plates or partitions 5, 5<a>. Aback plate 6 extends down from the lower transverse edge of the sloping plate to the centre line of the boiler. The side plates extend down between the flues and the boiler shell, and the intermediate plate 5<a> extends down between the flues. The sloping plate may be made up of a number of arch or V-shaped plates connected together at their longitudinal edges. The plates are supported on the flues by one or more frames 11, 12, 13 secured by cables 14 and adjusting screws 15.
Patent GB-541020-A (GB)
Title: Improvements relating to corrugated asbestos-cement and like sheets
IPC: E04C2/16
Filed: 1940-05-07
Abstract: 541,020. Coating compositions. HARRAP. E. R. May 7. 1940, No. 8225. [Class 95] [Also in Group VIII] A flexible sheet of woven knitted matted or felted fibre, e.g. hessian, hemp, flax, cotton, duck, artificial silk and coconut fibre matting is secured at one surface of a corrugated asbestoscement sheet, the degree of adhesion being such that upon impact just sufficient to break the asbestos cement sheet the fibre sheet becomes detached instead of breaking. The fibre sheet may be treated with rubber, balata, guttapercha, synthetic rubber such as neoprene, bitumen, artificial resins such as polyvinyl chloride or acetate, cellulose derivatives or in the case of cotton, cuprammonium. The sheet may be secured by an adhesive, e:g. rubber and vulcanized if desired. A suitable adhesive comprises rubber latex, solium silicate, sulphur, phenyl- #-naphthylamine, zinc, isopropyl, xanthate and water. The adhesion over the edges may be high and within this border low. A roll of tacky rubber-proofed fibre sheeting may be unrolled into contact with the corrugated sheets and pressed into the corrugations by hand or a fluted roller: Alternatively the sheets may be adhered in the flat and corrugated together.
Patent GB-1194782-A (GB)
Title: Improvements in Horizontal Boring-Milling Machines
Inventor: GALBARINI MASO
IPC: B23B39/02
Filed: 1968-02-20
Abstract: 1,194,782. Machine tool details. INNOCENTI SOC. GENERALE PER L'INDUSTRIA METALLURGIAC E. MECCANICA. 20 Feb., 1968 [24 March, 1967], No. 8230/68. Headings B3B and B3C. A horizontal boring machine comprises a column 1 movable along superposed guides 2, 2<SP>1</SP>, Figs. 1, 2, a spindle carriage 3 vertically movable on the column, a spindle carrier 4 horizontally movable on carriage 3, an auxiliary slide 3a vertically movable on the column, and a tool carrying plate 7 rotatably mounted in slide 3a. The slide is counterbalanced by a weight 5, or by fluid pressure means, is moved vertically by an electric motor 73, Fig. 14, which operates a worm drive 75, 76, and can be locked in a desired position by fluid pressure actuated levers and clamps 52, 50, 53, Fig. 12. Plate 7 is rotated directly by a pinion 15 carried by the machine spindle, Fig. 14, and driven by motor 73, or in a modification the pinion 15<SP>1</SP>, Fig. 15, operates through a reduction gear 16, 17. Plate 7 may have one of a number of tools, or sets of tools, secured thereon, so that, a boring, facing, tapping, or milling operation may be carried out on the workpiece. When carrying out a facing operation, Fig. 1, three sets of tools 18, Figs. 7, 8, are provided, each of which comprises a slide 21 movable radially by a lead screw 23 driven by a direct current electric motor 30, through a gear-box 26, the motor being fed by a commutator 32. In a deep boring operation, Figs. 2 and 9, an extension 33 is mounted on plate 7, and the screws 23 are rotated by gear-box 26 through a telescopic shaft 34, and a second gear-box 26<SP>1</SP>. Tools 18 can be replaced by a tool head 42, Fig. 3, when carrying out a drilling or milling operation, the head comprising a base 41 slidable on a support 40 by means of a screw (43), Figs. 12, 15 (not shown), which is driven from gear-box (29). The tool spindle of head 42 is driven by a motor 58, Fig. 3, and may carry a tool extension 70 adapted to carry a tool 69, or a tool holder (63), Fig. 17 (not shown), which comprises a tool slider (68) movable in a direction normal to the axis of the extension by a lead screw (66) driven by an electric motor 61, Fig. 3. The head 42 may have an angle head (71), Fig. 6 (not shown), which carries facing tools, drills, or spot facing tools (72). When using head 42, plate 7 is locked in a selected angular position on slide 3a by means of an element 54, Fig. 15, having legs 54a, 54b which straddle a projection 55 on plate 7, and are deformable by fluid pressure pistons 57.
Patent GB-964172-A (GB)
Title: Copolymerisable unsaturated polyesters compositions
Inventor: HUNT THOMAS
IPC: C08G63/676
Filed: 1960-03-09
Abstract: In the manufacture of resin by copolymerizing an unsaturated polyester with an ethylenically unsaturated monomer, products free from surface-tackiness are obtained by using as the polyester one substantially free from the residues of alpha, beta-unsaturated carboxylic acids and which contain the residues of (a) carbic anhydride or a derivative thereof in which one or more of the hydrogen atoms in the pentane ring structure not containing the ethylenic unsaturation is replaced by a substituent (e.g. chloro or methyl) and (b) a polyhydric alcohol containing at least one beta, gamma-ethylenically unsaturated ether group. Specified polyhydric alcohols are the alkyl-, methallyl-, ethallyl- and chlorallyl ethers of glycerol, trimethylol ethane, trimethylol propane, pentaerythritol and sorbitol.  The polyester may also contain the residue of ethylene, propylene or diethylene glycols or of adipic, succinic or phthalic acids.  Polyesterification may be effected in the presence of hydroquinone or tertiary butyl pyrocatechol.  Specified monomers are styrene, vinyl toluene, divinyl benzene, acrylic or methacrylic acid esters or amides, esters of vinyl or allyl alcohols and vinyl ketones. Copolymerization is effected in the presence of a peroxide catalyst (e.g. methyl ethyl ketone peroxide, methyl isobutyl ketone peroxide or cyclo hexanone peroxide) and, possibly, a promoter (e.g. a cobalt or vanadium salt).
Patent GB-938069-A (GB)
Title: Process for the production of polypropylene
Inventor: MIRABILE FRANK A
IPC: C08F6/02
Filed: 1962-03-02
Abstract: Solid polypropylene is produced by polymerizing propylene in an inert hydrocarbon solvent at a temperature of 90 DEG  to 200 DEG C. in the presence of a catalyst comprising titanium dichloride or trichloride and an aluminium trialkyl, aluminium alkyl chloride or aluminium alkyl hydride to obtain a solution of polypropylene in the solvent, adding to the solution an adsorbant consisting of silica gel as the sole effective purification additive, separating the solution from the adsorbant, at least the major part of the catalyst residues being removed with the adsorbent; by filtration while retaining the polypropylene in solution, and recovering the polypropylene from the filtrate.  Preferably the mole ratio range of the titanium chloride to the alkyl aluminium compound is between 2:1 and 1:2 and the preferred titanium chloride is the trichloride and the preferred aluminium compound is aluminium triethyl.  Preferably the titanium chloride is ground in an inert atmosphere prior to use.  Generally 0,002 to 0,02 g. of catalyst are used for each gram of propylene to be polymerized. The catalyst components can be premixed and if desired heated to the polymerization temperature, and then added to the polymerization reactor, or they can be added simultaneously to the reactor in separate streams, the titanium component preferably being added as a slurry in the solvent to be used in the polymerization.  The premixing is generally carried out in the solvent that is to be used in the polymerization reaction.  The polymerization pressure is preferably in the range 0,07 to 70 atmospheres.  The effluent from the polymerization reactor, comprising a slurry consisting of the hydrocarbon solvent, dissolved propylene polymer, dissolved unreacted propylene and the catalyst residues, is preferably passed to a flash tank to flash off the unreacted propylene.  The silica gel can be added under pressure in the flash vessel simultaneously with the flashing operation, or after the flashing operation the slurry can be passed to a vessel to which the silica gel is added under pressure, e.g. under the pressure of an inert gas.  The slurry containing silica gel is filtered at a temperature sufficient to keep the polymer in solution and at a pressure sufficient to keep the solvent liquid, e.g. 90 DEG  to 180 DEG C. and 7 to 35 atmospheres and the dissolved polymer is recovered from the filtrate.
Patent GB-387526-A (GB)
Title: Apparatus for manufacturing seamless hollow bodies from solid billets
IPC: B21J9/04
Filed: 1932-03-19
Abstract: 387,526. Forging-machines. GRœNTHAL, M., 8, Lindemannstrasse, Dusseldorf, Germany. March 19, 1932, No. 8258. Convention date, Feb. 8. [Class 83 (iv).] Billet - piercing.- Apparatus for producing a seamless cylindrical hollow body from a prismatic billet in a single cycle of operations comprises a matrix in two halves d1, d2 one of which is carried by a transverse slide operated by toggles f2, slide f1, and crank a2 from the shaft a and a punch c carried by a slide b which moves forward to pierce the billet after the latter has been centred and gripped in the matrix. The blank may be severed from a bar h by means of shear blades i1, i2.. The punch c is stripped from the hollow body on the return stroke by a slidable ring g which is moved forward positively at the end of the forging operation to shape the rear end of the hollow body. The piercing operation may be performed progressively in a number of stages, Fig. 5 showing the matrix parts for one such stage ; the shear blades i1, i2 leave a connection h2 at this stage between the blank h1 and the bar h.
Patent GB-723245-A (GB)
Title: Improvements in the manufacture of sodium tripolyphosphates
Inventor: BACON CYRIL GODFRAY
IPC: C01B25/41
Filed: 1953-03-18
Abstract: <PICT:0723245/III/1> <PICT:0723245/III/2> <PICT:0723245/III/3> Polymeric sodium tripolyphosphate is obtained by neutralizing phosphoric acid with soda ash to form monosodium phosphate, filtering to remove impurities, dividing the filtrate into two parts substantially in the ratio of 2:1, neutralizing the larger part with either soda ash or caustic soda to form disodium phosphate, mixing the disodium phosphate with the remaining monosodium phosphate solution, spray drying the mixture, heating the product, coating and if desired, grinding.  In the preferred embodiment illustrated by the flow sheet (Fig. 1), phosphoric acid containing about 30 per cent P2O5 by weight is continuously treated with a slight excess of soda ash in vessel 2 heated e.g. by steam coil 3 so as to have a final temperature of about 85 DEG C. and a pH of 4.3-4.5.  Carbon dioxide is removed by pump 8.  The sodium monophosphate solution is filtered, the residue is mixed with water in vessel 13 and disposed of, and the filtrate divided into two parts in the ratio 1:2 by a mechanical device such as a V-notch weir or a suitably arranged pump.  The larger portion is neutralized with soda ash (or if a purer product is required, with caustic soda) in the vessel 20.  Both neutralization stages are preferably controlled by electrometric pH determination. The portions are mixed in vessel 22 and pumped to a spray dryer 26 where the mixture meets gases at about 450 DEG C. from the kiln 32. Entrained particles are collected in cyclone 29 and bag filter 30 and join the main product in line 41, which leads into kiln 32 where the particles are maintained at a temperature of about 350-450 DEG C. for a time which may be as little as 15 mins.  Finally the product passes to a rotary water cooler 38 and band conveyer 39, or is alternatively cooled and conveyed pneumatically in one operation.  The preferred construction of kiln 32 is shown in Fig. 2 in which gas-firing is employed, the hot gases being at 800-850 DEG C. initially.  The spray-dried material is passed via hopper 50 into the first of a series of covered troughs 34 in which it is propelled from one end to the other at the desired rate by means of adjustably inclined blades 37 (see also Fig. 4) mounted on rods 36.  The last blade 37a is not inclined and pushes the powder into the adjacent troughs before discharge.  The water driven off is vented into the hot gases, particles entrained therein being recovered during the spray drying.
Patent GB-1139864-A (GB)
Title: Fluid pressure servomotor
IPC: B60T13/565
Filed: 1967-02-22
Abstract: 1,139,864. Fluid-pressure brakes. BENDIX CORP. 22 Feb., 1967 [7 March, 1966], No. 8510/67. Heading F2F. In a fluid-pressure brake servomotor of the kind comprising a moving wall against which bears a diaphragm 38 which is clamped at its outer periphery between housing shells 32, 34 and has a bead at its inner periphery which is engaged in an annular groove 52 in hub 40 of the moving wall, the moving wall is so formed as to provide a radial portion 46, a peripheral axial portion 54, and intermediate these portions an inclined portion 48 which is joined to the radial portion 46 by a further axial portion 50. This formation is said to prevent creep of the diaphragm under the effect of the pressure differential which might otherwise cause the inner peripheral beading to be withdrawn from the groove 52. By disposing the anchorage for the outer periphery of the diaphragm well forward of the periphery of the moving wall an inward bulging of the diaphragm is permitted for the purpose of providing a reduction in the effective area of the diaphragm which becomes progressively less effective during the working stroke, thus compensating the return spring 94 to cause the output force to remain constant throughout the stroke. The moving wall and its integral hub 40, boss 42 and extension sleeve 44 is preferably moulded from plastic material. In the disclosed embodiment the diaphragm is vacuum-suspended, a self-lapping valve structure 62, 64 and resilient reaction disc 70 to provide " feel " being mounted in communicating bores in the hub and boss respectively to enable control via a pedal-operated rod 72 of the communication of power chamber 88 with either atmospheric pressure within the hub extension, to actuate the servomotor, or vacuum chamber 92, via passage 82 in the hub 40, to release the brake, vacuum being communicated to the chamber 92 by a manifold connection 90. The output from the servomotor operates a tandem master cylinder B by way of output rod 68 having a head 66 engaging the reaction disc 70.
Patent GB-526477-A (GB)
Title: A process for the extraction and dewaxing of mineral oils
IPC: C10G73/06
Filed: 1939-03-17
Abstract: 526,477. Purifying and dewaxing oils. EDELEANU GES. March 17, 1939, No. 8537. Convention date, March 22, 1938. [Class 91] Mineral oils e.g. lubricating distillates are extracted with liquid sulphur dioxide, mixed or not with an auxiliary solvent such as benzene, to remove unsaturateds, and are then freed from a desired proportion of residual sulphur dioxide by passage through an evaporator maintained at predetermined temperature and pressure so that only a relatively small and constant addition of the auxiliary solvent is necessary prior to dewaxing by cooling. Preferably the evaporator is heated by vapours of the auxiliarv solvent from the solventrecovery apparatus, and is operated at a constant pressure slightly greater than the highest pressure in the condenser for the dioxide. The initial extraction may be at 40-70‹C.; the oil may be raised to 60-80‹C. in the evaporator.
Patent GB-668461-A (GB)
Title: An improved timing or patterning chain
IPC: D04B11/20
Filed: 1946-03-20
Abstract: 668,461. Pattern chains. MELLOR, BROMLEY & CO., Ltd., and SHORTLAND, A. March 3, 1947 [March 20, 1946], No. 8592/46. Class 142(i) [Also in Groups VIII and XXV] A timing or patterning chain of the type comprising a number of transverse parallel bars hingedly connected at each edge of the chain and studs or cams detachably mounted on the bars, has spring clips releasably engaging the bars for preventing removal of the studs or cams. The chain shown in Figs. 1, 2 and 3 comprises transverse parallel bars 1 of circular crosssection hingedly connected at their ends by links 13 and having at spaced intervals narrow peripheral grooves or keyways 2 for the reception of studs 3 and disposed in parallel lines across the width of the chain Each bar 1 may be a solid unit or may consist of a spindle having a surrounding sleeve formed with the grooves 2. The studs 3 are cleft longitudinally at 4, Fig. 4, for the reception of spring clips 5, Fig. 5, or 7, Fig. 7, secured by a pin 11 in the stud, which fit in the grooves 2. The studs 3 with the cleft 4 can be formed by slitting a solid block of metal, by folding a piece of metal to U-shape or by riveting or welding two or more pieces of metal together. The studs 3 may have their corners chamfered at 3' or a stud may have a protruding end 3a to to overlap the chamfered end 3<SP>1</SP> on the next stud, Fig. 2. Each stud may be pierced with at least one hole through which a bar 1 extends or the bars 1 may be reduced as at 1a, Figs. 1 and 3, to permit the passage of interlocking parts on the studs, Figs. 5 and 6. Instead of the studs 3 being anchored by spring clips 5 located in clefts 4, two spring clips 5 may be located one at each side of a stud.
Patent GB-638633-A (GB)
Title: Improvements in or relating to electric motor control systems
IPC: H02P5/68
Filed: 1947-04-01
Abstract: 638,633. Control of D.C. motors. MOZZANINI, G. G., and LEBERTRE, M. April 1, 1947, No. 8768. Convention date, April 6, 1946. [Class 38 (iii)] An electric motor control system comprises a group of motors with variable field excitation and adapted to be electrically connected in different manners, each motor being provided with two series field control windings, namely a first field control winding adapted to be connected in series with the armature of said motor to aid the main field excitation, and a second field control winding divided into a number of elements equal to that of the motors in the group minus one, said elements being respectively connected in series with the armature of the other motors in the group, said second field winding being adapted to be connected during the starting period of the motors in such a manner as to aid the main field excitation and thereafter in a manner such as to oppose the main field excitation. Motors A1, B1 are started in series, a rheostat 10 being positioned to provide full excitation for separately-excited field windings 3A1, 3B1. Switches 18<SP>1</SP> and 19<SP>1</SP> are closed, the motor armatures being connected in series with field windings 6a<SP>1</SP>1, 6b<SP>1</SP>1 and starting resistors 11a, 11b, 12a and 12b. The field windings 6a<SP>1</SP>1, 6b<SP>1</SP>1 are so energized during the starting period that they aid the excitation of the windings 3A1, 3B1. Switches 13a, 13b are then closed to short-circuit the field windings 6a<SP>1</SP>1, 6b<SP>1</SP>1, switches 14a, 14b afterwards being closed to reverse the current in the windings 6a<SP>1</SP>1, 6b<SP>1</SP>1, which are now subtractive with regard to the main field windings 3A1, 3B1. Further increase of speed may be provided by increasing the resistance 10. To obtain a parallel connection of the motors, the rheostat 10 is short-circuited and resistors 11a, 11b, 12a, 12b are re-inserted so that the windings 6a<SP>1</SP>1, 6b<SP>1</SP>1 are again additive with regard to the main exitation. A switch 17<SP>1</SP> is closed to afford a bridge transition connection through resistors 15a, 15b. The windings 6al, 6b1 are now connected in circuit to aid the main excitation of the motors. The switch 19<SP>1</SP> is opened to obtain the full parallel connection, resistors 15a, 15b are removed, and the windings 6a<SP>1</SP>1, 6b<SP>1</SP>1 are reversed. When it is desired to operate directly at a speed corresponding to the parallel connection, the field windings 6a<SP>1</SP>1, 6b<SP>1</SP>1 are reversed only after the connection has been changed. The various switches may be sequentially operated under the automatic control of push-buttons (see Fig. 2, not shown). A similar arrangement employing a drum controller is illustrated in Fig. 3 (not shown).
Patent GB-558202-A (GB)
Title: Improvements relating to the uniting of metal to, and sealing metal into vitreous and ceramic materials by heat
IPC: C04B37/02
Filed: 1942-06-26
Abstract: 558,202. Modifying metallic surfaces. ANGLO IRANIAN OIL CO., Ltd., FAWCETT, E. W. M., and RICHES, T. W. J. No. 8845. [Class 82 (ii)] [Also in Group XXXVI] A metal surface is provided with an oxide coating which is converted to a borate coating by treatment with a non-ferrous metallic borate for fusion with a complementary glass or ceramic surface. A thin sleeve a of non-ferrous metal or alloy is heated in air to a temperature between 300‹C. and 600‹C. to form a non-adherent oxide coating which is then removed and the sleeve is then heated to between 50‹C. and 500‹C. to form an adherent oxide coating. A saturated solution of borax is applied and the sleeve heated to melt the borax. Nine such coatings are applied and a refractory glass tube f such as soda glass, lead glass and borosilicate is then inserted and fused into the sleeve, a shaping tool being used to exert radial pressure on the glass. The sleeve and tube may be conical and axial pressure employed to complete the joint. The sleeve may be formed of 80-20 brass and have plain ends d, e, and central corrugations b, c.
Patent GB-1121904-A (GB)
Title: Apparatus for testing tubes or rods by ultrasonics
Inventor: CHATTAWAY MAURICE DAVID
IPC: G01N29/26
Filed: 1964-09-14
Abstract: 1,121,904. Ultrasonic inspection devices. S.T.D. SERVICES Ltd. 13 Sept., 1965 [14 Sept., 1964], No. 8845/66. Divided out of 1,121,903. Heading H4D. The disclosure is substantially the same as that of the parent Specification, but the claims relate to the magnetic coupling between the transducers and the signal generating or detecting apparatus.