US68716A - John dimelow - Google Patents

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JOHN DIMELOW, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR 'IO HIM.- SELI T. P. STUARD, AND J. STUARD, OF THE SAME PLAGE.

Leiters Paten-t No. 68,716,1datecl iS'epfembei-VIO, 1867.

lIIVIIItOVFD KILN FOR BURNING CLAY PIPES.

TO ALL'WHOM IT MAY CONCERN:

Be it known that I, JOHN DIMELOW, of Philadelphia, Pennsylvania, have invented an ImprovedKiln for l Burning Clay Pipes; and I do hereby declare the following to be a full, clear, and exact description'oi the same. My invention consists of a kiln constructed substantially as described hereafter, sof that the products of combustion may passboth through and around the clay pipes placed in the kiln, the said.fpi ,x' es4 being thereby slakcd or' burned more speedily and thoroughly than in ordinary kilns. p

4In order to enable others skilled in the art to make and use my invention, I will now proceed todescribe its construction and operation, reference being had to the accompanying drawing, which `forrnsa part of this speciiication, and in which- Figure l is a sectional elevation of luy-improved kiln` for burning clay pipes.

Figure 2 is a. plan View, and

Figure 3 is a sectional plan on the line 1-2, fig. 1.

iliis the vertical wall of' the kiln, which is circular in shape, and in which,`at equal distances from cach other, arearranged the radial fire-places a a communicating with the interior of the kiln. In the domeshaped top B of the kiln are openings c, to which are fitted covers d; and through the centre of the kiln, and through the top of the same, extends a chimney, C, at the lower end of which are openings c. The base of the chimney is surrounded by an annular bridge, f, the outer side of which is but a short distance-from the inside of the vertical wall A; and between the chimney and the bridge extends a series of radial perforated ribs, z, on which rest concentric rings z'z' z', arranged at about equal distances apart between the bridgef and-the chimney`` 4 The pipes m to be burned are introduced through an opening', fn, into the kiln, and lthere placed upon the rings z' z', as shown in iig. 1, each pipe resting upon two adjacent rings, and all the pipes being placed near but not in absolute contact with each other. After this the openingn is closed, and the fuel on thegrates ofthe {ireplaces ignited. The heated gases and products of combustion pass from the fire-places into the kiln, and are directed upwards by the bridgef, and then'pass-downwards through and round the pipes to the openings e, and through the latter to the chimney, the heated gases being thus `brought into intimate contact with the entire inner and outer surfaces of the pipes, which nre rapidly and thoroughly baked. I

When it is desired to glaze the pipes, common salt is thrown into the {ire-places, whence it is carried, in a volatilized state, by the currents, to the pipes, the surfaces of which are thereby vitrified.

When the fires are first kindled the caps are removed from the openings c, in order that the gases may'pass freely upwards, and carry thesinokc with them. p

If desired, the rings z'z'may be dispensed with, and the number of radial ribs i may be increased, so as to afford rests for the pipes; or other suitable supports for the latter may be used.

I claim as my invention, and desire to secure by Letters ,Patent- 1. A kilnhaving fire-places a, a chimney, C, and rings z', or their `quivalents, the whole beingmo arranged that the products of combustion, in their passage from the fireplaces to the chimney, mustpass both through and around the pipes m, resting on the said rings, for the purpose specified.

2. The ribs h h, rings z' z', and bridge f, arranged within a kiln in respect tuo-the {irc-places and chimney, substantially as and for the purpose set forth.

In testiniony whereof I have signed my naine to this specification inthe presence of two subscribing witnesses.

JOHN DIMELOW.

Witnesses:

JOHN WHITE, W. J. R. Dumm'.

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