US1541117A - Joseph cochkan - Google Patents

Description

J. COCHRAN SMOKE FILTER Fil ed Got. 27. 1624 June 9, 1925.

Patented June 9, 1925.

UNITED" STATES.

JOSEPH ooonaeu, or DULUTH, MIQNNESOTAF SMOKE FILTER.

Application filed October 27, 1924. Serial No. 745,948.

To all whom 2'25 may concern: .7

Be it known that I, J osnrrr COGI-IRAN, a citizen of the United States, residing at Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Smoke Filters, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to attachments for smoke fines, and has special reference to a combination draft regulating and soot collecting device for installation preferably intermediate of a domestic furnace and upright chimney or fine.

The principal object is to provide a novel form of soot collector and draft regulator whereby economy in fuel consumption is obtained, and a convenient means of precipitating' and scavenging the soot intermediate of the furnace and the upright flue.

Other objects and advantages of the invention will appear in the further description thereof.

Referring now to the accompanying drawing in which like reference characters indicate like parts; a

Figure 1 is a central vertical section of the device as applied to a furnace, the latter being shown in fragmental elevation;

Figure 2 is a top plan view of the draft regulator and collector; and

Figure 3 is a side elevation of same.

The draft and soot receptacle comprises a vertically elongated, preferably rectangularly shaped body portion 1, having fixed thereto, upon the back side thereof and adjacent the up Jer end, the smoke discharge thimble (gentrally of the opposite or front side, and somewhat above the lower end thereof, is attached the intake thimble 3, while spaced intermediate of the latter and the upper end of the receptacle is the inclined draft thimble 4. This latter is provided with a hingedly united damper or closure 5 which is controlled in any desired manner as for example by a suspending chain 6, so that the damper may be opened and closed as desired.

Into the thimble 3 is attached the pipe 7 leading from the furnace S and the receptacle is preferably placedas closely to the furnace 8 as is practical; a close juxtapositioning of same to the furnace giving the best possible results.

The depending lower portion 9 of the re-' ceptacle 1 provides a chamber for "the deposit of soot and other granular products of.

combustion thatmayfall therein, and, for

convenient access to the receptacle 1, there is provided the hinged door 10 upon one side thereof and above the chamber so that on opening this door the deposits in the chamber may be conveniently removed. 7

A vertically disposed baffle 11 is formed Within the receptacle 1 and is spaced from the opening through the draft thimble t said baffle extending upwardly either to the top of the receptacle or curved as at 12 towards the thimble 4 and above same, so as to deflect the cold air as it enters the thimble 4 downwardly and into the path of the products of combustion as they come from the furnace; the lower extremity of the battle occurring approximately at the center of the opening through the thimble 3.

In this manner when the damper 5 is opened the ingoing cold air will meet the warm or hot air from the furnace and chill same as they interiningle just below the end of the baffle 11 and the enlarged chamber 9, where, due to the cessation of draft and chilling of the products of combustion any granular substance therein will be precipitated within the receptacle and collect with in the chamber 1). Furthermore it is apparent thatthe air within the receptacle 1 will be warmer in the upper end thereof than in the lower end, so that in the event of any natural tendency for cold air to return to-the furnace through the lower portion of the flue 7 the same will take place automatically and thus improve the con ditions of initial combustion within the furnace, resulting obviously in a saving of fuel; this specific feature being well known and old in the art as discharging lines of furnaces are frequently equipped with cold air admitting appliances upon the under side thereof. However to applicants knowledge they have never been used in combination with a soot collecting receptacle which received the cold air in the upper end thereof, or above the incoming hot air orifice.

From the foregoing it is evident that I have produced a combinationdevice which results in a double functioning of the admission of cold air into a furnace flue, and having thus described my invention, what I claim and desire to secure by Letters Patent, is:

1. The combination with a furnace flue of the character described, of an upright hollow receptacle into which the flue discharges adjacent the lower end thereof, a discharge orifice adjacent the upper end of the receptacle, and controllable means'for admitting cold air into the receptacle.

2. The combination with a furnace flue of the character describe-d, of an, upright hollow receptacle into which the flue discharges adjacent the lower end thereof, a discharge orificeadjacent the upper end of the receptacle, a controllable cold'air inlet above the intake orifice from the furnace, and a bafiie for'directing the cold air as t enters the receptacle into the the furnace.

3. The combination with a smoke flue of the character described, of a readily accessible chamber installed therein, and a controllable cold air inlet within the chamber above the inlet of the fine from the furnace.

path of the hot air from In testimony whereof I hereunto a-iiix my signature.

JOSEPH COOI-IRAN.

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