US1006253A - Filtering apparatus. - Google Patents

Description

A. MCDONALD & A. BROWN-DUMB. PILTERING APPARATUS. APPLICATION FILED JAN. 21, 1910.

1,006,253, Patented Oct. 17, 1911.

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ARCHIBALD MCDONALD, 0F HENLEY, NEAR DUNEDIN, AND ALEXANDER BROWN- DURIE, OF DUNEDIN, NEW ZEALAND.

FILTERING APPARATUS.

Application filed January 21, 1910.

Specification of Letters Patent.

Patented Oct. 17, 1911.

Serial No. 539,376.

To all whom it may concern:

Be it known that we, ARornBALD Mo- DONALD, farmer, and .ALEXANDER BnowN- DURIE, solicitor, both subjects of His Majesty the King of Great Britain, and reading, respectively, at Henley, near Dunedin, and at Princes street, Dunedin, in the British Dominion of New Zealand, have invented certain new and useful Improvements in Filtering Apparatus; and we declare the following to be a full specification of the same.

The object of the invention is to make an eflicient filtering apparatus, which, though primarily intended for milk, is obviously adapted for other liquids for separating sediment from them.

Hitherto the strainers generally strain downward, or so that any sediment remains on the straining surface, not only choking it, but on adding liquid, the sediment often is broken up and much gradually passesthrough. l/Ve make a receptacle of convenient shape, preferably as shown, but in any case, one in which an upright filtering diaphragm is so placed that two compartments are formed, into one of which, liquid is poured and through which it percolates to the other compartment, from which it is drawn ofi.

The liquid is poured on a baffle plate arranged to prevent the disturbance of any sediment after it has settled. Just behind this diaphragm, in the receiving compartment, a sediment well is formed under the bottom, with a long narrow entrance from the bottom to it. This well is preferably of circular section as being easier to clean which is done by the removal of screw plugs.

Referring to the accompanying drawingz-Figure 1 is a longitudinal section of the apparatus with the tap in elevation and Fig. 2 is a plan of same with the battle protecting plate removed. Fig. 3 is an elevation of the filtering partition or diaphragm, removable for easy cleaning.

A is the receiving compartment and A the storage compartment for the filtered liquid.

A is the floor of both compartments.

B is the guide frame of V section secured to, or part of, the sides and floor, dividing the receptacle into the two compartments above specified.

C is the sediment well, located beneath and open to the floor A at the slot C and further provided with screw plugs C 0 D D is a protecting or baflie plate a little way from, but covering the filtering surface and the floor of the receiving compartment and closer to these at the outer ends than at the angle of juncture, the portionD connecting the lower portion D with the top D The top portion D of plate D may be extended over compartment A to prevent liquid inadvertently being poured there but it should be sufliciently high for ventilation. The plates D and D fit closely at their sides to the sides of compartment A, but leave a space at the outer end D around which the liquid flows freely.

D is a convenient handle for removing the baffle bodily from the receptacle.

E is the removable skelton-frame carrying the filtering diaphragm and provided with longitudinally grooved sides and bottom to slide into outer frame B. The top rail and strengthening bars E E of said frame E are plain. This is covered with metallic gauze, flannel, blotting paper or other known substance for filtering and may have hooks E E to clip the edges to prevent bulging.

F F are feet keeping the well C off the ground and allowing for ventilation under the bottom.

G is a tap for drawing 01f the liquid, from end A. When tap G is closed and liquid poured into compartment A, it falls on plate D and runs around end D and over the floor A allowing any sediment to get into the well C through slot G As the liquid rises it filters into compartment A until its level in both compartments is the same. When any liquid is drawn off by tap G the filtering begins afresh. WVhen fresh liquid is added, it washes any sediment from the filtering diaphragm and same falls into the well C, so that the said diaphragm is always clean while the sediment remains undisturbed in well C. We believe the filtering diaphragm should be as upright as possible.

In this invention any suitable sizes, materials or shapes of compartments may be adopted.

l/Ve claim as our invention 1. In a filtering apparatus, the combination of a receptacle; a vertical filtering diaphragm arranged in said receptacle and extending transversely thereacross, to divide the same into juxtaposed receiving and storage compartments; a sediment well arranged beneath the floor of said receiving compartment, said floor being formed with a transverse slot located at the foot of said diaphragm and constituting the entrance to said well and a bafiile comprising an inclined lower portion disposed within the receiving compartment, an upper portion extending across the top of the storage compartment, and an intermediate vertical portion con necting said upper and lower portions and arranged within said receiving compartment in front of said diaphragm.

2. In a filtering apparatus, the combination of a receptacle; a vertical filtering diaphragm arranged in said receptacle and extending transversely thereacross, to divide the same into juxtaposed receiving and storage compartments; and a battle comprising an inclined lower portion disposed within the receiving compartment, an upper portion extending across the top ofthe storage compartment, and an intermediate vertical portion connecting said upper and lower portions, and arranged within said receiving compartment in front of said diaphragm.

In testimony whereof, we hereby afiix our signatures, in presence of two witnesses.

ARGHIBALD MoDONALD. ALEXANDER BROWN-DURIE.

itnesses KEN'roN MAULAY-DABLY, THos. FRASER.

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

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