US2310699A - Flue door shield - Google Patents

Description

Feb. 9, 1943. F. w. HvosLEF FLUE DOOR SHIELD Filed June` 14, 1941 Patented Feb. 9, 1943 FLUE DOOR SHIELD Fredrik W. Ivoslef, Kohler, Wis.

Application June 14, 1941, Serial No. 398,086

(Cl. 11d-173) l Claim.

My invention relates to improvements in ue door shields for boilers, and it is the object of my invention to provide means whereby a single door may be utilized to cover both the rebox opening and the flue clean-out opening of the boiler.

With the foregoing and related objects in view, the improvement resides in the construction illustrated and described in the accompanying drav ing, in which Figure 1 is a front View of a boiler constructed in accordance with my invention, the door being shown closed; Figure 2, a sectional view through the door, taken on the line 2 2 of Figure 3; Figure 3, a front View similar to Figure 1 but with the door removed; and Figure 4, a perspective view of the flue door shield.

In the drawing the numeral l indicates a boiler of conventional design provided with an opening 2 to the re box and flue openings 3 at the iront of the boiler to aord access to the flues for cleaning purposes.

It has been conventional construction to provide a door for access to the rebox and a separate door for access to the ue opening. My improvement comprehends the use of a single door to cover both the opening to the rebox and the flue openings, thus materially reducing the cost of manufacture as Well as making a more satisfactory construction.

To this end I provide a single door i covering both the rebox opening 2 and the flue opening 3. The door 4 may be provided with the conventional liner 5 at the portion adjacent the rebox opening 2.

In order to prevent the escape of gases from the flue opening 3 when the door 4 is opened, I provide a ue door shield, indicated generally by the numeral adapted to seal the flue openings 3 against the escape of gas.

It will be understood that, in the conventional boiler construction, there are two ue openings 3, separated by a water passageway 1.

The flue door shield 6 is, in the form illustrated, composed of a pair of baille plates 3 joined by a saddle 9 adapted to overlie the Water passageway 1. As is illustrated, particularly in Figure 3, the baffle plates 8 are of a height somewhat greater than the height of the ilue openings so as to overlie the top edges of the inner surface of said flue openings when inserted therein. The saddle 53, by its abutment against the Water passageway 1, together with the overlying portion of the baffles, serves as means for holding the baffle plates in position to close the iiue openings. The assembly may readily be removed by raising the saddle 9, tilting the bafe plates 8, and Withdrawing them from the flue openings, and may be replaced by reversing this process.

When it is desired to clean the flues the flue door shield will, of course, be removed, permitting access to the ues for cleaning.

The specic details herein disclosed are for the purpose of illustration only, and I do not desire to limit myself to such details, as it is obvious that various modiiications may be made therein without departing from the essential features of the invention, as defined in the appended claim.

I claim:

In combination, a boiler, the front of said boiler being formed to provide a rebox opening and a pair of flue cleanout openings, a water passageway separating said flue cleanout openings, a door adapted, when closed, to close both said rebox opening and said flue cleanout openings, a pair of baille plates of a height greater than said flue cleanout openings adapted to abut the inner surface of said boiler adjacent said flue cleanout openings and a saddle attached to said baille plates and adapted to overlie said water passageway whereby to hold said baille plates in position to close said ue cleanout openings.

FREDRIK W, HVOSLEF.

Images