US1533752A - Fireplace damper - Google Patents

Description

April 14, 1925.

G. A. MORRELL FIREPLACE DAMPER Filed March 8, 1924 I INVENTOR 6/e/2/7 '14. Marre// M ATTORNEY Patented Apr. 14, 1925.

\ UNITED.

GLENN MORRELL, or SEATTLE, WASHINGTON, ASSIGNOR ro Arias-Bar. ROBINSON;

OF SEATTLE, WASHINGTON.

FIREPLACE DAMPER.

Application filed March 8, 1924. Serial No. 697,735.

To (all whom it may concern:

Be it known that I, GLENN A. Moment, a, citizen of the United States, residing at Seattle, in the county of King and State of l Va-shington, have invented certain new and, useful Improvements in Fireplace Dampers, of which the following is a specification.

This invention relates to fireplace dampers and more particularly to the controlling means therefor.

The object of my invention is the PI'OVi-r sion of improved devices permitting move ment of the damper plate yet acting to normally retain the samein selected intermediate positions.

\Vith these and other ends in view, the invention consists in the novel construction, adaptation and combination of parts hereinafter described and claimed.

In the accompanying drawings- Figure 1 is an end view of a fireplace damper embodying my invention; Fig. 2 is a plan view of the same, partly broken away; Fig. 3 is a transverse section on line 3-3 of Fig. 2, but with damper plate shown in a difi'erent position; Fig. 4 is a vertical longitudinal section on line 4-4 of Fig. 3.

In said drawing, the reference numeral 5 represents, generally, the damper-frame member which is adapted to fit in the throat of a fireplace. Said frame is provided with a throat passage 6 enclosed between front and back walls 7 and 8, and between end walls such 9. As illustrated, the front wall 7 extends as at 10 below the plane of the other walls to support a lintel element 11.

Said frame walls are desirably arranged to converge upwardly as shown, and the end walls 9 are inclined horizontally to provide a throat passage-of less width at the rear than at the front thereof. 1

The damper plate, represented by 12, is provided adjacent its front edge 13 and near each of its ends with a depending arm such as 14 having a laterally disposed trunnion element 15 which serves as a pivotal support for the damper plate in apertures such as 16 provided in the respective end walls of the frame.

17 represents a handle-arm shown as socured to a trunnion element 15 of the dammoved into selected positions.

The bolster surface 19 seryes as a bearing or a s ud or protu e a ce 20 of the damper plate,'said stud beinglocatedat or adjacent to the rear edge 21 of the damper plate;

In practice, the stud 20 and bolster 18 coact with the trunnions and the bearings therefor in the respective end walls of the frame to support the damper plate in different adjusted positions. Furthermore, the frictional engagement of the stud with the bolster surface serves to retain the damperplate againstaccidental displacement but permit the damper plate being moved through the medium of the handle arm 17.

What I claim, is,-

1. In a damper, a damper frame having a bolster element rigid therewith, a damper plate pivotally connected to said frame, and a stud protruding from an end of the damper plate to bear upon said bolster element for sustaining the damper plate at one edge thereof andserving to frictionally resist movement of the damper plate.

2. In a damper, a damper frame, a damper plate pivotally connected adjacent one edge thereof to the damper frame, a stud extendinglaterally from said damper plate and adjacent to its other edge, and means rigid with said frame and engaged by the stud to support a portion of the weight of said damper plate in its different positions and serving to frictionally resist movement of the damper plate.

3. In a damper, the combination with a damper frame, of a bolster element extending upwardly from an end of the frame, a damper plate movably connected to said frame and means carried by the damper plate and engaging the upper surface of said bolster element for retaining the damper plate in selective adjusted positions with respect to the frame. a

4. In a damper, a damper'i'rame, a bolster at one end thereof, a damper plate movably mounted in said-frame, means carried by the damper plate andengagmg with the upper surface of the bolster for supportinga portion of the weight of the damper plate, and

operating means for overcoming the frictional resistance of the first named means with respect to the bolster to effect setting movements of the damper plate.

5. In a damper, a damper frame, a bolster at one end thereof, a damper plate pivotally mounted in said frame, means carried by the damper plate and engaging the upper surface of the bolster for supporting a portion of the weight ofthe damper plate, and operating'means connected to the pivot of the damper plate for overcomingthe frictional resistance of thefirst named means with respect to the bolster to effect setting movements of the damper plate. i

6. In a damper, the combination with a damper frame, and a damper plate having pivotal connection to said, frame, of a bolster element in fixed relation with respect to the frame, said bolster having a curved upper surface disposed in approximately concentric relations with respect to said pivotal connection, and means carried by the damper plate and arranged to bear upon the curved surface of said bolster whereby the latter serves to retain the damper plate in adj usted positions.

7. A damper comprising a frame, a bolster element protruding upwardly from one end thereof, said bolster having an arcuate upper surface, a damper plate pivotally connected to an end of said frame below the bolster and approximately axially of the arc of the upper surface, thereof, and means carried by the damper plate and adapted to bear upon the said surface to cooperate with the pivotal connection of the damper plate for supporting the entire weight of the latter in different positions of the same.

Signed at Seattle, \vashington, this 23rd day of February 1924.

GLENN A. MORRELL. \Vitness:

PIERRE BARNES.

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