US1785385A - Flue damper and latching mechanism - Google Patents

Description

Dec 16, 1930. GE, LAUER 1,785,385

FLUE' DAMPER AND LATCHING MECHANISM Filed Nov. 1, 1928 INVENTOR.

George 5 L (yer M5 ATTORNEY.

Patented Dec. 16, 1930 f;1 enonenn. LAUER,or voaxmlvnkennn oniira v with a latching mechanism whichlope'rates, automatically to both latch and, unlatch' the damper into and from itsc l'osed position apartial rotation offthedampen .10.

tion is the constructionin aifiue havinga pivoted damper, of a shoulder in said ,damper, s a pendulum supported 'by said flue and provided with a horizontally, eiitending' portion,

1 and means for guidingsai'd h'orizontallyex tending portion in'a 'Closedpath around said shoulder.

The invention-pbsssee other objects andfeatures of advantage, some of which, with i the foregoing, will besetforth-in the'following description of the fpreferred form of my invention which is illustrated in thegdrawings accompanying the present "specification. It is to be understood thatI do not limit my- 5 self to the showing made by the said drawings and description as I may adopt variations of the preferred form within thescope of my invention as set forth inthe claims.

Referring to said drawings: Figure 1, is'a vertical sectionof a flue and or unlatched. e e Figure 4 is atop plane view of the mechanism shown in the above figures. V f

My invention contemplates the use of a conventional cylindrical flue 1, adapted to be 7 closed by a damper 2, pivotallyl carried on a shown in the drawings both'the flue and its damper are of circular form but objects of my invention may be embodied therein irrespective of such form; 1

Formed on the periphery of the damper 2 More specifically'the object of this inve1i-' g'eth'er definejwhat'maybe termed horizontal to a verticalposition in Figure lkthej'pendulum 12should be piv damper in which the objects of my invention,

rod 3 secured along one of its chords. As"

nit outwardly by their incl nedsurfaces; On

m -mmn A I Ne M GHAN M i2 L}, Q31: "i

1. 2M ;Application th amma, 19 2 8. j serial lio aiegb.

and preferably alongthe; perpendicular 'biseqt reo i pivo a a is adownwefdly 6 tending pocket t, provided on its 'outer wall 7 with a shelf'5 secured to the damper 2 on eithers'ideofthe pocket land disposed above 55,

and vertical 'shoulders. It is to "benotedthat' the portion 8 is coplanerwith the 'damperQ and thatthelowei-{end of the portionei) lies justabove theipla'ne of theshelf Th i r I P d f i trips 6' and 7fextend somewhat beyond the vertical rear wall "of tlif pocket" 4 andliein aninclined'plane whichin tersects'the open inouth of the pocket. Due

to the additional weight of the'pocket l the center of-gravity of the damper '2, lies at a point between the pocket and the rod,3. The

damper is therefore always u r'ged by gravity Extending'inwardly intothe flue 1 and secured "thereto at a point somewhat abovetlie horizontal'plane determined 'by the rod '3, is a bracket. 11: To theouter end of this bracket I is pivoted apendulurn"12}provided at its low er'e'n'd witha cross-arm 13. As best shown :30 oted on an aXis'which lies considerably inwardlyfof the'pocket formed bv'the' right an gularly disposed'portions 8 and ear the guide strips Gand- H v p The automatic -operation of the latching mechanism abovedescribed may'befeifected by merely pulling on a cord l5 attached to the damper 2 on the side opposite the pocket 4 and is as follows Normally, the'damper,' due 1 toithe action of gravity, remains in vertical position. "By pulling on the cord 1 5the damper is gradually made-to assume a horizontal position and so doing the guide members band 7 'engage the' cross-arm 13 of the pen-j duluin "12, (as shown in Figure 1) ,and force reachingthe right-angularly"disposed portions 8' and athe penduluniis swung to "the left until 'itscross-arrn'i's engaged beneath angularly disposed portions 8 and 9, as shown in Figure 2. To release or unlatch the device the cord is .givena further pull until the cross-arm of the pendulum has cleared the lower edgesof the vertical portions 9, at which time the damper is free to fall and the pendulum free to move to the left. It i is to be noted"-that the shelf 5' prevents the cross-arm from completing a closed path about the strips 6 and 7 without first engag ing the shoulders formed by theiri-ght-uangu-i larly disposed portions 8 and 9.

Although as shown in -the d-rawing's"the damper has been provided with a downwardof material having, the; same cross-sectional contour. as that; I of 4 the pocket lshown. will serve to guide the cross a-rm ofithe'pcndfll m in the desired manner; "INQIHneed the cross-7 arm, :13 be} Provided with two legs as .shown,

- one legbeingasufiicient to, answer Ithepurpose;

Fromthe above description,it belnoted that I have; provided a latching 'mechanism for flue damp erls' Operating automatically to mere partial rotation otthedamper, V,

Iclaiinzfl v a 1; flue, provided with a vpivoted damper,

a catch ,member provided onpsaid. damper, a

pendulum supportedby, said? flue and "pro both, latch and;unl'tch saidfdamper. by a 'videdlwitha horizontallyfextending portion for guidingsaid; horizontally extending. por

tion in a closedpath around andintoand out (if lz usching engagementrwith; said catch member upon successive movement of the damper in; one direction r a 2. Ailue provided cwithia pivotedrdamper,

a catch member provided in saidjjdamper, a, pendulumg-supported by said flue" and provided-with horizontally, extending portion adapted to be; latehedwith. said catch mem b.er,.in.yone position ofQ-saidlpendulum,and

it tendingPPrtiQIilying 11e, side of said l means; :for' progressively guiding, said horizontally extending portion into' engagement with said patch member upon movement of the damper into a;vpredeterminedgposition, V said catch member. releasing the pendulum upon further movement of said damper.

3Q A flue provided with a pivoted damper; f

acatch'member carried' by said damper; a

pendulum: supported bysaid flue, and provided with a horizontally-extendingportion, the neutral position 1 of saidlhorizontally exfor progressively guiding said horizontally extending portion into latching engagement wan; said catch memberg when moving the damper-toamlosed position, said catch memben lea n t eip l mt rwi p in 0f 7 1 the dam er, H

supported by said flue and provided with a horizontally extending portion, the neutral position of said horizontally extending portion lying to one side of said catch member;

said member being formed for guiding said horizontally extending portion into engage- I ment with said catchmember on a relative movement ybetween said-L pendulum and said 7 i i I hold the da mper in a predetermined position, ly depressed pocket 4, it is evident that a strip means on saidda-mper co-operating with said latch; 1 a: rela r ovem tw Said latch and damper for effecting engagement of the latch, with said catch, and means 'for partially {rotating Said", damper. i

6. A flue provided with apivoted damper havin a catchimember thereon a bracket seb V .J I

cured to saidqflue 'a latch pivotally suspended! from said bracket, said catchmemb'er in.- cl'uding a guide member co-operating with said catch. member: to guide 7 said latch be- 'ne'athla portion ofithefcatch on "a' relative movement between said flue and latch.

5 7. A fluejprovidedv-with aj pivoted damper arranged; to normally hang in open position, gravity operated latcli'means. carried by said flue, and Qmeans including a catch member arrangedfwhereby, on a partial rotation of said damper, the latch will be guided into and .out {of latching engagement Wlt l1' the catch membergg,"

1 In testimony;

my. hand: atOakland, California, 'this b ri ws. I v V GE GE. UE

A ue pr v dd -vit aipiret da ir r member lca ir i fby Said damper and whereof, hereunto set

Images