US1083460A - Nozzle and cloth belonging to and used in filter-presses. - Google Patents

Description

J. NEWTON. NOZZLE AND CLOTH BELONGING TO AND USED IN FILTER PRESSES.

n APPLICATION FILED JUNE 30, 1913. 1,083,46 Patented Jan.6,1914.

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COLUMBIA PLANOGRAPH (20., WASHINHTON. D. c,

J. NEWTON.

APPLICATION FILED JUNE 30, 1913.

Patented Jan. 6, 1914:.

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NOZZLE AND CLOTH BELONGING TO AND USED IN FILTER PRESSBS.

JOHN NEWTON, or LONGPOR'I', STOKE UPON-TRENT, ENGLAND.

NOZZLE AND CLOTH BELONGING TO AND USED IN FILTER-PRESSES.

Specification of Letters Patent.

Patented Jan. 6,1914.

Application filed June 30, 1913. Serial No. 776,542.

To all whom it may concern Be it known that I, JoI-IN Unw'ioiv, subject of the King of Great Britain and Ireland, and resident of Longport, Stoke-upon- Trent, in the county of Stafford, England. engineer, have invented certain new and useful Improvements in Nozzles and Cloths Belonging to and Used in Fllter-Fresses, of which the following is a specification.

My invention relates to improvements in or iii connection with nozzles and cloths employed in filter pressesand particularly to such as are employed for filtering potters slip, the object being to provide an 1m proved nozzle for each tap having a rigid tubular extension of reduced diameter below the usual coupling joint of the tap; the combination with such nozzle of a filter bag provided internally with a flexible tube with or without a conical entrance nipple and an improved filter tap having a rigid tubular extension of reduced diameter secured to the tap body or a tubular extension of a reduced diameter secured to the tap body by a spherical end or by an end with a flexible disk so as to permit of universal movement about the joint connection.

My invention will be fully described with reference to the accompanying drawings in which Figure 1 is an elevation, partly in section, of a nozzle and tap, Fig. 2 sectional elevation of a flexible tube connected to the filter cloth, Fig. 3 elevation of nozzle only, Fig. 4 elevation of a tap having a tubular projection secured to the tap, Figs. 5 and 6 side elevations partly in section, showing a spherical bearing for the tubular projection and flexible connection respectively, Fig. 7 detached view showing a curved tubular projection and Fig. 8 elevation, partly in section, showing a flexible tube, tubular projection and ferrule.

In accordance with my invention and referring particularly to Figs. 1 to 3 a represents the ordinary plug tap body fitted with the usual union coupling I) having projections 0 engaged by inclined lugs (Z formed on the usual nozzle 6. My invention consists in forming the latter with a tubular extension f'of reduced diameter at its lower end permanently attached thereto, such extension being adapted to pass tightly through a flexible tube 9 secured to the upper end of the filter cloth or bag 72., such flexible tube also forming a feature of my tension and the tap.

lnvention, A liquid-tight joint is made between the parts referred to by the internal pressure exerted by the slip within the bag. The usual patch 2' is secured to the bag it near the flexible tube 9 to strengthen it.

So far as the provision of the tubular extension and flexible tube are concerned the arrangement described was quite satisfactory, but disadvantages exist in connection with the coupling of the nozzle 0 with the tap a, as hitherto, that is to say, that when the press is full the tap has to be uncoupled from the nozzle by unscrewing a lock nut which at each operation causes a loss of slip as the slip held in the body of the tap and below the plug but above the top of the nozzle escapes on to the top of the press and is to a great extent wasted. Besides this, the time required to couple and uncouple the tap from the nozzle at each operation is considerable. A further feature of my inventlon, therefore, consists in securing the reduced tubular extension f permanently to the lower end of the tap body a near to its plug portion or I detachably secure it thereto as in Fig. 4 by providing its upper end with a hexagonal head j, flange or the like having a screwed extension 7.; fitting in or upon a corresponding screwed portion at the lower end of the tap, a, the head or the flange enabling a tight joint to be made with the tap, with or without the use of a packing medium. Such a form of connection is rigid but as the stand pipe to which the taps are connected is usually hinged to the mainslip supply pipe atone end I may provide a flexible, though liquid-tight joint between the upper end of the reduced tubular ex- Thus the end of the pipe may be spherical as at m, Fig. 5, and fit within a correspondingly-shaped nipple or union a screwed to the lower end of the tap, such end being also shaped to conform to the spherical end of the tube. Or, again, the upper end of the tube may be suitably connected to a flexible disk 0, as in Fig. 6 secured by a union coupling 7) to the end of the tap. Other modifications having the same object in view may be devised, in all cases with the object of allowing the tubular extension to move fl'exibly as shown by broken lines in Figs. 5 and 6 when it is being passed into the flexible tube 9 of the filter cloth or bag it. To assist further in this direction I may employ in connection with the cloth or bag a nipple as in Fig.

8 located at the upper end of the flexible tube 9, within the bag, such nipple being secured to the cloth and provided with an outer flange r forming an easy entrance for the tubular extension f. The flexible tube 9 surrounds the smaller end of the nipple g. The tubular extension f may be straight or may be curved as in Fig. 7 so as to enter the nipple or flexible tube 9 more easily.

With the arrangements described the loss of slip is almost entirely prevented, and the time in attaching and detaching the tap from the nozzle saved.

The foregoing arrangements may be employed in connection with filter cloths or bags h provided with loops 2 passing over fixed pegs 3 on the filter frames to hold them in position while the tubular extensions are being passed into the bag.

What I claim as my invention and desire to secure by Letters Patent is 1. In a clay-press attachment, the combination, with a discharge pipe provided with an outlet valve, of a filter bag, and a tube of flexible material secured to the top of the bag and depending within it, said discharge pipe being slidable in the said tube and fitting closely in it.

2. In a clay-press attachment, the combination, with a discharge pipe provided with an outlet valve, of a filter bag a tube of flexible material secured to the top of the bag and depending within it, said discharge pipe being slidable in the said tube and fitting closely in it, and a flaring entrancepiece for the discharge pipe, said entrancepiece being secured in the top of the filter bag and in the upper endportion of the flexible tube.

In testimony whereof I have hereunto set my hand in the presence of two witnesses.

JOSEPH BENTON, PATTIE PLANT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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