US977663A - Draft-regulator for furnaces. - Google Patents

Description

A. F. LEWIS:-

DRAFT REGULATOR FOR rmimozs.

APPLICATION FILED JUNE 13, 1910.

' sufliciently-"the' expansionregulator-will be s 3 a uto naticallythrown into operation. s 1 i My'- invention"will be'described in detail *1 hereinafter,-and; illustrated in the a'ccom- To all whom'it my content; a iBe-it' known that I, ALBERT Lnwis,' a citiz'enof the-United States, residing 'at .Urbanmin the county of Gharnp'aign and State 'of Ohio,' have'mvented certain new.

and useful Improvements in Draft-Regulators for Furnaces, of which the following is a specification.

My invention relates to devices fhr auto matically regulating the drafts of furnaces by the emplo ment of an ex ansible rod in the furnace t at is operative y connected to the drafts, and has for one of its objects the -p vision of means by which the. regulating rod 'may'l be', lengthened and shortened inaccordance. 'with the'weather'condit-ions;

An'oth g object "ofm invention is the rovisionbfmeans by w 'ch the drafts may heldgiopenwhilea fresh fire is being 'started, andwhentheirshas burned up pan, fng drawingsin which- I rel -is-aslde view of a conventional I furnacepartly broken'away and showing my odtaftregulaton applied thereto, Fig. 2-, a

. ing joist of the lo" :view-v of: the dial and pointer, and Eigi'3, a detail'viewfof the link to which the draftchains are attached.

In the "drawmgs similar reference characters indicate corresponding parts in all iof-the'views'. 35

{A indicates a furnace of conventional ty havi the draft opening B adjacent to "its base c osed by hintged door C, and D a ceilurnace room having the dependingbrackets E, F secured thereto;

1 indicates the draft regulating bell crank lever piveta-lly secured to the lower end of bracket E, 2 a dial plate also secured to the bracket, 3 theexpansihle rod'Qf copper or other suitable metal-having one and mounted in thelower end oflbracket F and its other endinserted through the depending end 1 1 two ends .of rod 3 b i threaded as showfiw 6'0 "at hand 4'.

of hell crank leverl and dial plate"), the

5 indicates a thumb nut having an tegral pointer 6, mounted on threaded end 4; of the rod 3, and 7 a bloic'k looselyfmounted on the rod- 3 and-having a transverse angu-' lar groove 7 thereon'that engages angular 'projec'tion 8 on the end of lever 1.

9 indicates a thumb nut on threaded end warm t that but a slight adjustment'of "the -arniwhen the summon croissants, cine.-

' nnAr'r-nneumron lion mansions P =911leat1onnuetteis me i atented-Dec.fl6419i0i Application filedJu'ae 1a, 19l0. Serial 1161586506. v.

4- for adjusting-the length of the rod with installing the apparatus, to suitthe indiv idual furnace.,

10 indicates ahorizontal arm rigid-lsecured to bracket E, 11:41 sleeve sli ably mounted on arm '10, 1'2 a-;rod pivotall secured tosl'eeve llfand 13 a thread rod swivelly secured't'o the end of rod lit-hat engages a threaded bore 14 in verticalarm' 15 secured to regulating levercl. 16 indicates a plate having two slots'li' and 18 therein, and a hook lll to-which the chain 20 is secured- 'that supports the draft door 0. The. end-oilever 1 engages 'slot 18 so that'as therodhiexpands on contracts under the influence of the heat ,doorlC is 'liftedor closed as desired tokeefi'th elfire v i burninghproperly to create suflicient'heattow 0 building. The dial plate 2 asshown in. Fififl-lias the degrees of temperature indicat was;

- face and iiiuse it is intended that the pointer:

be set at the point to indicatethetempera 4 1 ture outside of the house and-this-will regu late the o erative length of the 3 so 4 to "keep t e temperature lathe-house atfa comfortable degree. It-{has been found that I I i a change of ten degrees in the temperatura g; utside'of the house inakesa change of one degree within so that it will be apparent 4 the operative length of the-rod '3 isnecessary to keep the temperature within the-house the same at all times .As in startin'g'a furnace-fire it is desirable t6 let-the'fire burn briskly for: time to thoroughly warm the house before starting. the automatic re ulation of the furnace 4. and p mg the late .on the end of-armfby'insertin' t e am! through slot 11. This will hold t 'edraft dooropem til'fthehmt of the furnace has so'expaxi efdxthe-rod il that: the movement lever ff and f vertical aria 15 "is-sufiicient to move. the sleeve llto 'th the draft door: will be started 1 21 indicates a weight susfiended ver 1 and normally tending .to 'niove it, wardly. Having thus described my venfionwhat-ai i Iclaim 1s'- ""-'1 10 '1. In combinationwithai. a pivoted draftdoog i hraokfefifijfiitgfi drafts I, accomplish this b lifting the law". 16 with chain 20 and drafzdoor p cured adjacent to the furnace, a lever fulornmed on one of the brackets, a horizontal rm secured to the same bracket, an expanle rod ecured to the lever and the other- 5 bracket and extending through the furnaceafor d, a plate connected to the draft door mul'hav1ng two slots therein, one of said slots being-adapted to engage the lever aforoaaid'and the other slot to exwage the l arnr af resai. 1, and means operated by the lever to remove the plate from the arm.

2. 1n combination irith a furnace having a pivoted draft door; brackets suitably c red adjacentto the furnace, a lever ful- 1 er m d on one of the brackets, a horizontal farm secured-to the same bracket, an expansible' rod secured to the lever and the other. bracket and extending through the furnace aforesaid, a plate connected to the 2!) draft door and having a slot therein to engage the arm, a sleeve slidablv mounted on the hormontalarm, a vertical arm secured t0 e lever, and operative means connecting.t-l1e. vertical aria and sleeve aforesaid.

3., In combination with a furnace-having a PlVOtGCl draft door, brackets euttahly secured adjacent to the furnace, a lever fulcrnmed on one of the brackets, a horizontal arm secured to the same bracket, an expansible rod secured to the lever-and the other bracketand extending through the furnace'aforesaid, a plate connected to the draft door and having two slots therein, one

of said slo'ts being adapted to engage the I t imony whereof. I hereto affix my."

signature in the presenceof two witnesses. I ALBERT F. LElViS, \Yitncssesz' J. R. IIUGHES,

K, Brown.

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