US 2099984 A
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Description (OCR text may contain errors)
G. LUNDQUIST PIPE CONNECTER Nev. 23, 1937.
Filed Feb. 9, 1937 CusmfLunaguz'sf. BY
ATTORNEY Patented Nov. 23, 1937 2,099,984
UNITED STATES PATENT OFFICE.
2,099,984 PIPE CONNECTER Gustaf Lundquist, Hawthorne, Wis.
Application February 9, 1937, Serial No. 124,801
3 Claims. (01. 285-185) This invention relates to pipe connecters, and Figure '3 is a perspective view of the connecter more particularly to connecters for joining shown in Figure 1. lengths of stove pipe and for holding such pipe Figure 4 is a fragmentary view, partly in seewhere it enters the chimney. It has for its obtion, of the connecter Figure 1. t 5 jects the production of a connecter of simple con- Figure 5 is a longitudinal sectional view of a 5 struction, cheap to manufacture and one that stovepipe connecter embodying features disclosed will prevent the escape of gas, smoke and dust. in preceding figures.
Other objects and advantages will be apparent A form of connecter suitable for use when confrom the following specification. necting stove pipe to a chimney will first be Where the ordinary stove pipe enters a chimdescribed. 10 my wall, it has been customary to insert it into Referring to Figure 1, the numeral [0 denotes a tile or other pipe of non-combustible matean outer tubular member having an outwardly rial, or merely to put it into a hole cut through extending flange II. This member may be of any the chimney wall and opening into the flue suitable material such as metal, earthenware, therein. The pipe is then provided with a colporcelain, moulded asbestos material or the like, lar usually of tin or sheet iron, fitting the pipe and is of the proper dimensions to fit tightly more or less snugly and lying fiat against the within the chimney opening and it may be conouter wall to form an air-seal between the wall nected therein so that no leak can occur around and the pipe. the exterior thereof.
The objections to the foregoing method are If the tube I0 is of non-metallic material, the 20 many and so well known as to be common knowlinner metallic tubular member I 2 therein exedge. The collar seldom fits the pipe, nor does it tends rearwardly as shown in Figure 1 and has lie flat against the wall; the pipe is not held in its end l3 turned over the inner end of tube 10, position in the chimney wall; often the pipe whereby it is held firmly in place and forms a extends too far into the flue and is choked. Gas, lining for the tube. 5
smoke and soot escape around the collar and. If the tube It is of metal then the tube 12 soil the wall. This arrangement if properly carneed not extend rearwardly as shown, but can ried out requires the pipe to be secured within be shortened, and riveted or welded to I0 as the flue opening and the collar secured to the shown at It, Figure 5.
wall. This requires tools and skill not ordinarily The outer end of tube I2 is provided with a 30 available. plurality of longitudinal slots l5 which extend A further difliculty is met with when joining inwardly a short distance and provide a plulengths of stove pipe together. The standard rality of resilienttongues l6 having their outer practice is to crimp one end of each length of ends turned over to form the gripping claws ll pipe and shove it into the large end of another the points of which are directed outwardly as 35 length thereof. This does not securely lock the shown in the figures. joints or lengths together as they are only held The points of the claws I! normally rest upon by friction. Often a nail is driven through the the inner wall of the tube in but the shape of joined sections to secure them together which of the lateral ends of these claws is such that when course causes a hole through which gas, smoke the end of the stove pipe E8 is thrust inwardly 40 and dust find their way into the room. against them, they y e a Spring i y.
The foregoing objections and difficulties are permitting the pipe If! to be thrust into the tube eliminated by the present invention, some of the li! until the inner end of the p p extends beyond additional advantages of which will be apparent inner ends 0f the Slots t0 the point from the following description of a preferred eme inner end 98a of the p p is is therefore 45 bodiment thereof. It will be understood, howin close enga e ent with the inner wall oftube ever, that the construction is by no means limit- [0 and the outer We of tube 92 and is effectued to the precise form herein described but may y sealede C aws ll grip the inner surface be varied in various ways without departing from of the p p l8 d Securely hold. same in posithe appended claims. tion. Because of the rake or angle given these 50 Figure 1 is a longitudinal sectional view on claws e po of S bite into the p p the line l-l of Figure 2 of a form of connecter d any te y O the pipe to turn or slip is suitable for use when connecting a stovepipe eliminated. to a chimney wall. If necessary, the pipe [8 may be (and usually Figure 2 is a view on the line 2-2 of Figure 1. is as commonly made) P vid With a head, 55
over which the claws ride which further serves to hold the pipe in position.
By the foregoing invention just described, the pipe I8 is securely held in position and the escape of gas, smoke and dust from around the pipe 18 where it enters the tube [0, or from around the tube II] where it enters the wall is prevented.
It will be understood that, by turning the pipe I8 in the tube In and pulling quickly on E8 with a jerking motion, the pipe can be removed from the claws. However, this operation must be deliberately performed as ordinarily the pipe l8 will withstand the usual handling and shocks to which such pipes are ordinarily subjected, without parting from the tube II].
To use this invention to join lengths of ordinary stove pipe, one end of each length of pipe is provided with the tubular member l9, Figure 5, welded or otherwise secured within the tube as shown at I4. The pipe I8 is held in place by this member, in the same manner as the pipe I8 is held as previously described.
What is claimed is:
1. A pipe coupling comprising a non-metallic tubular member, an inner metallic tubular member extending throughout the length of said outer member secured therein and having a flanged inner end engaging the inner peripheral edge thereof, said inner member having a plurality of longitudinal outwardly extending resilient tongues lying within said outer member and adapted to interiorly engage a pipe thrust between said inner and outer members.
2. A pipe coupling comprising a tubular nonmetallic tube of vitreous material having a metallic lining therein, said lining being longitudinally slotted for a portion of its length inwards from one end of the tube to form resilient fingers to permit the end of a pipe to be pushed between said tube and lining and held therein by said resilient fingers.
3. A pipe coupling comprising an outer tubular member, an inner tubular member secured within said first member, said inner member having a portion forming a continuous imperforate wall overlying the inner wall of said first member, and said inner member having a plurality of longitudinally outwardly extending resilient tongues lying within said outer member and adapted to interiorly engage a pipe thrust between said inner and outer members.