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US 4,375,872 AGranted
Draft control for stoves and furnaces
OwnerAndrew J. Schrockinventor
Life of this patent
Estimating the term…
Abstract
A draft control unit for stoves and furnaces comprising housings of variable design, wherein may be incorporated a bi-metal element or means for remote control. An eccentric control rod supplies adjustment means for said bi-metal and a draft door with means of self adjustment to stove.
Claims2
A draft control comprising p1 (a) an outer housing having a face wall and side walls, in said face wall formed a projection and adjacent an aperture accommodating
- (b) a control rod comprising a pivot shaft, slightly off-centered within a notched disc affixed 90 degree to its axle, said notched disc communicating with said projection, restricting rotational movement of said pivot shaft to 180 degree and further relative with an eccentric formed under said notched disc of said control rod for adjusting the location of
- (c) a Vee shaped bimetallic element, pivoted at its bottom, one end of said bimetallic element accommodating and in communication with said eccentric of said control rod;
- (d) a retainer and shaft forming pivoting means for said Vee shaped bimetallic element, said retainer affixed to said one side wall;
- (e) two parallel slightly spaced rods affixed to and between the lower edge of two of the said walls and further adjacent said bimetallic element, forming pivoting and self-adjustment means of
- (f) a draft door with stiftening bends and one end bend and formed, pivoting between said parallel slightly spaced rods and further means for preferably chain connection from said draft door to other end of said vee shaped bimetallic element.
2 more elements
A draft control comprising
- (a) an outer housing having a face wall and preferably 2 side walls, in said face wall formed a projection and adjacent an aperture accommodating
- (b) a control rod comprising a pivot shaft, slightly off-centered within a notched disc, affixed 90 degree to its axle, said notched disc communicating with said projection restricting rotational movement of said pivot shaft to 180 degree and further relative with an eccentric formed under said notched disc of said control rod for adjusting the location of
- (c) a Vee shaped bimetallic element, pivoted at its bottom, one end of said bimetallic element accommodating and in communication with said eccentric of said control rod;
- (d) a retainer forming pivoting means for said Vee shaped bimetallic element affixed between said two side walls;
- (e) a draft door pivoting and relative responsive with other end of said Vee shaped bimetallic element.
2 more elements
Dependencies are inferred from the claim text.