US1103724A - Damper. - Google Patents

Description

G. WOLF.

DAMPER.

APPLICATION FILED MAR. 25, 1914.

Patented July 14, 1914.

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GUSTAV WOLF, OF NEW YORK, N. Y.

DAMPER.

Specification of Letters Patent.

Patented July 14:, 1914.

Application filed March 25, 1914. Serial No. 827,140.

nace attachment or combustion generator.

described and claimed in my prior Patent- 781,483, dated January 81, 1900.

The object of the invention is to provide regulation combustion chamber of a heater or stove, so as to insure a proper combustion by a m ngl ng of the oxygen of the atmospheric air with before the latter es- 1 cape through the smoke pipe and flue, and 5 at the same time permitting the escape of non-combustible gases and preventing the for a very minute adjustment or of the draft in the furnace, steam boiler,

the combustible gases same from being discharged into the rooms or building being heated and thereby avoid:

ing the casualties and disagreeable odors shown as provided with an opening 12 at which otherwise result.

Another object of the invention is to pro- 1 which is provided with an attachment or auxiliary damper covide an improved damper operating with openings therein so that when the main closed in a position to other escape passage, the auxiliary damper can be set to further regulate the degree of draft and prevent the entrance of cool air over the fire bed in a combustion chamber, thereby permitting a maximum quantity of heat derivation consistent with a minimum,

rable and efficient in operation and not likely to get out of working order.

Reference is to be had to the acoompanying drawings forming a part of this speoidamper or damper plate is close a smoke pipe or iication, in which similar characters of reference indicate corresponding parts in all the views, and in which Figure 1 is a side elevation of a heating furnace havingv its smoke pipe equipped with the improved damper, Fig.2 is an enlarged sectional view taken longitudinally of the smoke pipe and vertically through the damper; Fig. 3 is a sectional view taken at right angles to Fig. 2 and showing the damper in elevation.

' While the present invention is especially adapted for use with my prior device as above mentioned by reason of the novel and desirable arrangement for supplying air in a heated condition directly over the products of combustion, whereby there is a complete mingling of the airwith the gases to insure the burning of the combustible gases, the device is adapted for other uses in a smoke or draft pipe.

In illustrating the application of the invention a conventional form of heating furnace 10 is shown, from the combustion chamber of which a smoke pipe 11 extends for communication with the uptake or flue in order to discharge the smoke and noncombustible gases. This smoke pipe is one side adjacent to the furnace over which a laterally extending casing 13 is secured, said casing having a closure plate 14 which closes by gravity and is commonly used as a check to regulate the draft.

WVhether or not the furnace or smoke pipe is provided with the draft regulator described in my patent, it is found that the carbon monoxid or carbonic oxid and other light gases of a combustible nature which are formed when carbon is burnt with a limited supply of oxygen or where carbon dioxid meets with an excessive carbon at a red heat, such gases escape into the furnace room and also pass into the rooms or building with the heatedair and the result is the disagreeable odors from some of the gases, while carbon monoxid'gas although colorless and possessing neither taste nor smell, causes death if inhaled in comparatively small quantities. The present invention is designed to overcome these objections, and as illustrated the damper comprises a main damper plate 15 corresponding to the interior cross section of the smoke pipe and provided with apertured extensions 16 on one side with rectangular apertures receiving an operating rod 17 having a handle 18 located exteriorly of the smoke pipe for turning the damper plate to the required angle in regulating the draft. A concavely arcuate notch 19 is also provided in the pe-- ripheral edge of the damper plate at the top of the latter for the purpose of permitting or maintaining a slight draft when the damper is moved to an upright position'to close the smoke pipe and atthe same time to permit the lighter and non-combustible dangerous gases to escape at the top of the smoke pipe while a whirling motion is cre- V patent.

ated at the center of the damper, causing the return of the heavier and combustible gases to the combustion chamber to be burned. In this operation of the device it is essential that some auxiliary inlet for air to the combustion chamber be provided and thus the special adaptation of the damper to a furnace equipped with an attachment or combustion generator set forth in my prior In addition to the notch 19 the damper plate 15 is provided with apluralvice which provides means for obtaining ity, preferably a pair, of apertures 20-, preferably'located above and below the vertical center of the damper plate through which the damper rod 17 extends so as to lie above and below this rod and to dispose the apertures in spaced relation a distance at least equal to the diameter of each. Onthe face of the damper plate disposed toward the check deaccess to the interior of the smoke pipe, is

an auxiliary damper which consists of a flat plate 21 having a pair of apertures 22 corresponding in diameter to the diameters of the apertures 20 and spaced apart the same distance. This plate 21 is provided witha slot 23 adjacent one corner and near its lower end, whereby the plate is slidably held "on the main damper by engagement of a headed member 2 1 therethroughJ This fastening member consists of a rivet or screw secured to the main damper and passing through the slot with its head contacting with the face of the plate 21 so as to permit vertical adjustment of saidplate on the plate 15. The plate 21 is further provided with a verticalslot 25 near its upper end through which a screw 26 carried by the plate 15 extends, while a nut 27, preferably in the form of a wing nut, is engaged on the screw and is designed to be brought into frictional engagement with the plate 21 to hold the latter in an adjusted position with relation to theplate 15 and regulate I the relative positions of the openings of the two plates to control the draft of the furnace. The upper end of the plate 21 of the auxiliary damper is convexly arcuate, as shown at 28, so as to conform to the interior face Of-the smoke pipe and operate to regulate the size of the opening provided by the notch 19 between the edge wall of said notch and the inner face of the smoke pipe. Thus it will be seen that access may be had to the interior of the smoke pipe by raising the cover or closure 14 or adjusting the auxiliary damper on the main damper by operation of the wing nut 27 and this can be done without danger of burning the hands by regulating the draft on the furnace. Also, when the damper is vertically disposed, as shownin Fig. 2 of the drawings, with the openings or apertures of the auxiliary damper in alinement. with the main damper the carbon monoxid and like gases will escape through the openingprov'ided H by the notch-19, these gases naturally as- 3 cending and hugging the top wall of the smoke pipe after being given ofi from the products of combustion in the combustion chambenwhile air is supplied through the apertures to commingle with the heavier and combustible gases in such a manner as to create a whirling motion tending to 1'9, turn such combustible gases with the, airin a highly heated condition to the combustion chamber to be consumed. lVh'en the pipe is vertical and the damper horizontally disposedor shifted from the position shown in Fig. 2, the light gases through a whirling motion escape through the apertures, while fresh air is supplied around the main damper, thus permitting the escape of the nonper having a notch in its edgeportion and a plurality of openings therethrough; of a plate slidable on the damper and held from rotation and having a corresponding number of openings to aline at times with the first mentioned openings, one end of the plate being rounded to cooperate with the edge notch for varying the size thereof or close the same, adjustment of the plate serv ing to simultaneously coveror uncover the openings andnotch, and means for holding the plate in an adjusted position on the damper. 1

2. The combination with a smoke pipe leading'from the combustion chamber of a furnace or the like and means for obtaining access thereto; of a damper pivoted in the pipe and adapted to be turned from the exterior thereof, said damper having openings therethrough near its center and a notch in its upper edge substantially in alinement therewith, an auxiliary damper slidably connected to the first mentioned damper in contact with one face of the same and having openings of corresponding numher and size cooperating with the first mentioned openings and a convexly arcuate upper edge cooperating with the notch, and an adjusting member for frictionally holding the auxiliary damper at various positions of adjustment on the first mentioned damper to regulate the sizes of the openings and notch or close the same, said damper when vertically disposed in a horizontal pipe with the openings and notch uncovered permitting the lighter gases to escape through the notch while air is supplied through the openings, whereas when the damper is horizontal in a vertical pipe the light gases will escape through the openings while the fresh air is supplied through the notch in each case to combine with the heavier and combustible gases to be consumed.

3. The combination with a smoke pipe leading from the combustion chamber of a heater and av damper mounted in the pipe and having a notch in its upper edge, said damper being adapted to be set at different angular positions in'the smoke pipe and having openings therethrough near its central portion; of a plate having openings corresponding with the openings in the damper and having vertical slots therein. means carried by the damper and engaged through the slots for slidably retaining the plate thereagainst, the upper edge of the plate cooperating with the notch, and a binding nut for holding the plate in an adjusted position whereby when the damper is closed and the plate adjusted the light and non-combustible gases will escape therethrough while the heavier and combustible gases will return to the combustion chamber whereas when the damper is set at an angle the lighter gases will escape around the same while atmospheric air will, through a whirling motion with the heavier and combustible gases, cause the latter to return to the combustion chamber.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GUSTAV WOLF.

Witnesses:

JOHN E. BURCH, GEORGE H. EMSLIE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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