US1636537A - Damper regulator for furnaces - Google Patents

Description

July 19, 1927.

1,636,537 B. J. TRYN ER DAMPER REGULATOR FOR FURNACES Filed Jan. 15, 1927 2 Sheets-Sheet 1 B671 James Tamer 19 I927. July I B. J. TRYNER DAMPER REGULATOR FOR FURNACES 2 Sheets-Sheet 2 Filed Jan. 15, 1927 iiicies 7Zyzzer Patented July 19, 1927.

UNITED. STATES.

PATENT OFFICE.

BEN JAMES TRYNER, OF CHICAGO, ILLINOIS, ASSIGNOR TO ENTERPRISE BOILER &

TANK WORKS, A CORPORATION OF ILLINOIS.

DAMPER REGULATOR FOR FURNACES.

Application filed J 'anuary 15, 1927. Serial No. 161,250.

This invention relates to an improved damper control for furnaces, boilers and gases or smoke into the basement or boiler room. This is particularly necessary when introducing fresh fuel as the contact of the fuel with the hot fire generates a large. iniital volume of gas and smoke. It has heretofore been proposed that the damper incohanism be linked up with the door so that the damper is operated automatically, but such an arrangement has the draw-back that it interferes with the use of a thermostatic control as the damper is also needed to control the draft. It is therefore an object of this invention to provide an improved automatic and hand control for the damper connected up with the firing door, but so constructed that the damper may be operated entirely independently of the operating mechanism of this invention. In what follows, I have confined my description tothe linkage between the door and damper, no auxiliary or thermostatic control being shown.

Other and further objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

This invention (in a preferred form) is illustrated in the accompanying drawings and hereinafter more fully described.

On the drawings:

Figure 1 is a front elevation of a hot air furnace chosen to illustrate the device of this invention.

Figure 2 is a side elevation of the fnrr ace.

Figure 3 is a top view thereof as shown by the line IIIIII of Figure 1.

Figure at is a fragmentary section on the line IVIV of Figure 2.

Figure 5 is a fragmentary front elevation of a modified form of this device as applied to the fire door. 5

Figure 6 is a bottom view on the line V.IVI of Figure 5.

As shown on the drawings:

A. hot air furnace is shown without its usual enveloping sheet iron jacket, the parts of interest to the present invention being the front plate 10 having a fire door 11 hinged thereto at 12 and the smoke box 13, with smoke pipe 14 leading therefrom and having a damper 15 therein, controlled by the damper lever 16. A rod 17 leads from the lever 16 to a crank 18 on a vertical shaft 19 journaled at 20 and 21 to the fire door casing or fire box, thelower end of the shaft 19 forming another crank 22. The structure up to this point is common to both modifications.

In Figures 1 to 1, a spring 23 connects achain 24 to the crank 22, the chain passing through an aperture 25 in the front plate 10 below the door, then over one portion of the double pulley 28, and thence to an attachment 26 on the door 11, so that when the door is opened, the pull on the chain turns the vertical shaft 19 to open the damper 15. WVith the door closed, the chain permit-s unhampered operative movement of the damper by any other operating mechanism.

A second chain 27 is also attached to the spring 23 and is thus secured to the crank 22 It passes over another portion of the double pulley 28 and then through the aperture 25, the free end of this chain having a ring 29 which may be engaged over a hook 30 on the front plate 10 to hold the damper open when the door is closed.

The modification of Figures 5 and 6 eliminates the second chain 27 by placing the ring 29 in the end of the chain 24. which in this case passes through anapcrtured lug 31 on the door 11, the ring being ongaged by the lug to operate the damper as before, while the ring can also be pulled away from the door and engaged on the hook 30 to hold the damper open.

It will thus be seen that I have produced a simple and compact combined damp-er control operable either automatically by the opening of the fire door or independently thereof manually.

I am aware that many changes may be 'made, and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted hereon, otherwise than necessitated by theprior art.

I claim as my invention:

1. In a device of the class described. the combination of a damper, and a fire door, of a damper operating mechanism comprising linkage controlling the damper movement, a flexible connection theretoleading to the fire door and adapted to open saiddamper upon opening said door.

2. In a device of the class described in combination with a stack damper and a fire door, a damper operating mechanism comprising a shaft, linkage connecting said damper and Said shaft whereby rotation of the shaft operates the damper, a crank on said shaft, a flexible memberyieldingly connected to said crank and adapted to be engagetl by, said fire door to rotate. sa d sliai't, and means whereby said damper may be opened independentlyof the Qpeningof said fire door.

3. In a device otthe class described the combination of a damper, and a fire door of a, damper operatingmechanism comprising. linkag c n-trell nttt mp r mer nient, a flexible connection thereto leading to the fire, door and adapted to open said damper upon opening saiddoor, and means associated with said flexible'connection adapted to permit control of the damper operating mechanism independently of the fire door.

t, An operating connection between the damper and fire doorof a heating plant,

comprising rotatable: vertical shafit; having, cranks at both ends, a connection between one crank and the dampen ayieldingconr nection between the other crank am door, and means adapted; to permit operation of said, yielding connection. independently of the operation of the fire door. I

In testimony whereo'fi I; have hereunto snbt scribed my name.-

BENJAll-QES revere- 2 the fire

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