US1939537A - Fireplace damper - Google Patents

Description

Dec. 12, 1933- s. BRYNJOLFSSON FIREPLACE DAMPER Filed Aug. 11, 1932 Patented Dec. 12, 1933 FIREPLACE DAMPER Sigfus Brynjolfsson, San Franciscm'Calif.

Application August 11, 1932. Serial No. 628,426

2 Claims.

The invention relates to dampers for fire-places and has for its particular object the provision of a damper that is adapted to be installed in old fire-places not provided with a damper, being .5 provided with means whereby the damper may be readily inserted in position and removed therefrom, and also provided with means for operating the damper and to hold the damper in adjusted position, said means being mounted on and secured to the top of the fire-back wall.

A further object of the invention is the provision of an improved means for installing and removing a fire-place damper consisting in the provision of an axially expansible rod pivotally l engaging the damper.

A further object of the invention is the provision in combination with a tilting damper of a stop means secured thereto to limit the movement of the damper to closed and also to open position.

A further object of the invention is the provision of improved means for actuating a fire-place damper and to hold it in adjusted positions.

The invention will be described in detail hereinafter and will be found illustrated in the accompanying drawing, in which Figure 1 is a fragmentary sectional view of a fire-place showing the improved damper installed therein,

Figure 2 is a transverse sectional view on a plane indicated by the'line 2-2 of Figure 1,

Figure 3 is a sectional detail on a plane indicated by the line 3-3 of Figure 1, and

Figure 4 is a sectional view on a plane indicated by the line 44 of Figure 1.

In the drawing similar reference characters are used to designate corresponding parts in all the views.

In Figure 1 is shown a section of a conventional fire-place having a face wall 10, that may be of brick or other material, a top wall 11, and a back wall 12 supporting a flue 13 that may be of any size or shape and that may be of terra-cotta pipe or any other material. A fire-back wall 14 of conventional type is also provided and forms a back draft chamber 15 that is in vertical alinement with the flue 13 so as to catch" any droppings from the flue and prevent them from entering the fire-place 16. 17 indicates an inclined fire wall connecting the front wall 10 and the top wall 11. V

The improved damper is shown applied to the fire-place illustrated, and comprises a damper plate 18 that is diametrically pivoted as shown at 19 to the flue 13. In order that the damper plate may be installed in fines that are already in use and may be removed for repair and replaced, the damper plate 18 is provided with perforate cars 20 to receive rods 21 and 22 that are axially arranged, the rod 21 having an enlarged and threaded socket 23 to receive a threaded end 24 on the rod 22 so that by inserting the damper plate 18 in position with the rod 22 screwed into the threaded socket 23, the ends of the rods may be clamped in engagement with the flue 13 by turning the socket 23 on the'rod 22 to unscrew the socket therefrom, the exterior of the socket being provided with a plurality of facets to receive a wrench or other suitable tool for this purpose. 25 indicates a rod secured perpendicularly to the plate 18 by means'of nuts 26 and 27, and having an out-turned end 28. The rod 25 and the out-turned end 28 operate as a stop to limit the extreme movements of the damper 18 either into a closed position as shown in full lines in Figure 1 or into open position asshown in broken lines in said figure.

The means for operating the damper plate 18 comprises a rod 29 that is pivotally secured to an ear 30 on said plate, said rod 29 being preferably formed of cast steel or other metal and given a quarter turn as shown at 31 and having its free end provided with a plurality of openings 32 and its extremity with avhandle 33 for operating the rod. Mounted on the fire-back wall 14 is a plate 34.- having angular flanges 35 and 36 that engage the opposite sides of saidwall 14, and apointed projection 37 that engages one or the other of the openings 32 to hold the rod 29 with the damper in adjusted position.

38 indicates a forked member straddling the rod 29 and providing a guide therefor, and having a stem 39 with a threaded extremity 40 that engages in a threaded socket 41 in a clamping rod 42. The plate 34 is provided with recesses 43 to receive the-ends of the forked member 38, the threaded end of the clamping rod 42 being adapted to engage in the fire-wall 17 when the socket member 41 is turned relatively to the forked member 38, and serves to clamp the plate 34 in position on the fire-back wall as shown in Figure 1. r

The operation of the device will be apparent from the description, and it will also be apparent that the damper is adapted to be applied to old flues that have not heretofore been provided with a damper and its construction whereby it may be removed and replaced adapts it for ready removal for repair and adjustment. I10

flue, a rod secured to one side of said plate and having a plurality of openings therein, a flanged plate adapted for mounting on the fire-back wall, a projection on said flanged plate to selectively engage in the openings in the rod and hold the damper in adjusted positions, a fork member straddling said rod and providing a guide therefor, the flanged plate having recesses to receive the prongs of said fork member, and a clamping member threadedly engaging said fork member and holding it engaged in said recesses.

- SIGFUS BRYNJOLFSSON.

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