US173959A - Improvement in closing gas-retorts - Google Patents

Description

N. JAM'IN.: cnos'nrcms` ILE-Toms.

'raum-a Feb.v zz, 187e.

.PETERS. FHOTO-LITHOGRAFHER, WASHINGTON. DAC,

NITED STATES PATENT NiooLAUs JAMIE, or NEW YORK, N. `Y.

IMPROVEMENT IN cLoslNGGAs-RETORTS.

Specification forming part of Letters Patent No. 173,959, dated'rFebruary 22, 1876; application filed July 16, 1874.

To all whom it may concern:

Be it known that I, NrconAUs JAMIN, of the city, county, and State of New York, have invented certain Improvements in Lids for Gas-ltetorts, of which the following is a specication: t

The object of this invention is to provide for the sure closing of the mouths of coal-gas retorts without the usual luting with loam, andby means capable of easy and convenient manipulation.

The invention consists in the combination of a hinged lid, provided at its circumferential portion with alternate grooves and ribs, with a retort having its mouth provided with coincident grooves and ribs in such manner that when the lid is closed to its place the ribs of the one will iit into the grooves of the other, and when coated with Vthe tar naturally deposited therein during the normal use of the retort will eectually close the same against the escape of gas, provided the lid be properly held home to its place.

Figure 1 is a transverse vertical section of a retort-lid made according to my invention, and applied to the suitable constructed mouth of a retort. Fig. 2 isa front view of the same as made according to one modification of my invention, and Fig. 3 is alike view, showing another modification of the same.

A is the mouth of the retort, made of metal l in the usual manner, but cast or` formed -at its front or face with alternate grooves a and ribs b, the same extending circumferentially in an endless series having a configuration corresponding to the circumferential form of the mouth of the retort. The lid B is hinged at one side of the mouth A by ears c, which fit between similar ears f provided on the mouth A aforesaid, a vertical pin, g, connecting the Whole and forming the pivot of the hinged lid B aforesaid. The circumferential portion of the inner surface of the lid B is formed withl a series of alternate grooves and ribs, a' b', so arranged that when the lid is shut to its place the grooves and ribs of the one will coincide with the ribs and grooves of the other, so as to form, as it were, an interlocking joint between them, the larger innermost rib c on the lid especially shut- .mouth A, so that any deposit of tar which may occur at the mouth of the retort'in the normal use thereof will be more "or less upon this rib c and the immediately adjoining inner rib of the mouth A, and will thereby close the joint between the two, the viscid consistency' of the tar sealing the joint against the egress ot' the gas through the joint, which egress or leakage of gas during the distilling process is ordinarily a source of material loss. 'lo secure this result from the lid and mouth, constructed and combined as described, the lid must be' forced snugly hom-e to its place and firmly retained there. To provide for this the cotter-bar (l is loosely pivoted at one end to the pin p, and its opposite end is lfitted and arranged to pass into or behind a staticnary lug or latch, m, provided at the outerv lateral edge of the mouth A. At its center this hinged Cotter-bar carries the screw 1^, provided at its outer extremity with a suitable cross-handle, r', the nut of the screw r being provided in the center of the cotterbar aforesaid. When the Cotter-bar is fitted behind or into the xed latch m it simply holds the lid snugly to its place, as is desir- -able preliminary to the final tightening to a gas-tight closeness, as hereinbefore set forth.

To secure this tightness the screw r' is turned in the requisite direction, and the cotter-bar being held at one end by the latch m, and at the other by the pin p, affords' hold or resistance to the screw r, to enable the latter to bring the lid to its place upon the mouth with 'any degree of force or resultant tightness.

As a modication of the devices just hereinbefore particularly described, arrangement shown in Fig. 2 may bel used. In this the cotter-bar C is pivoted at its center to the lid B by the screw r in y such wise that when the lid is swung inward to its place and the cotter-bar is turned to a horizontal position one end thereof will swing downward into or behind a fixed latch, u, on one side of the mouth A, and the other upward under a similar but inverted latch, n', at the opposite side, whereupon the screw, being turned Vin the requisite direction, tightens the lid to its place in substantially the same manner as hereinbefore previously set forth.

When desired,the fixed la-tch and the hinge face of the lid, so as to condense and collect 472 maybe interchzm ged to reverse the direction the tar, thereby sealing the joint Without the in which the lid may be swung, and to meet necessity of using luting or packing, substaneny particular emergency. l tially es set forth.

What I claim as my invention if- The method herein deeeribed fer eleeiug NICOLAUS JAMIN gas retorts, consisting in forming in the Witnesses: month-piece a series of concentric grooves JAMES A. WHITNEY,

and ridges, and a corresponding series in the WM. B. PHAIR.

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