US912823A - Cap for vent-pipes. - Google Patents

Description

G. I. DEHN.

CAP FOR. VENT PIPES.

APPLIOATION FILED Nov. 22, 1907.

GEO'R-GE J.. DEHN,'OF CHICAGO, ILLINOIS.

CAP non vnN'r-rIPE s.

Specification of Letters Patent.

Patented Feb. 16, 1909'.

Application filed November 22, 1907. SerialNo. 403.387.

To all whom 'it may concern:

Be'r it known that I, GEORGE J. DHN, of ,hicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Caps for Vent-Pipes; and I do hereby declare the' following to lbe a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in caps for vent pipes, the object being to provide simple and effective means for detachably securing the cap to the free open end of the pipe, thus covering and protecting the pipe, and at the same time providing for the free passage of air to and from the same.

W'ith this end in view my invention con sists inthe parts and combinations of parts and in the details of construction, as will be more fully explained and pointed out in the claims.

In' the accompanying drawings, Figure l is a view in vertical section through the upper end of apipe and showing my improvement inposition thereon. Fig. 2 is a view of the under or concave face of the cap and Fig. 3 is a view in perspective of the locking saddle.Y

l represents av pipe, which may be a vent from a sewer or closet, and which must .be protected against the entrance of obstructions from the top andat the same time permit o f the free entrance and exit of air.

is the cap preferably concavo-convex in shape, and of a size to overlap the up er openiend of the pipe. This cap is provided on its concave or lower face with a plurality of integral lugs 3,'forming seats which rest on the upper edge of the pipe and sup ort the cap ina position over, but removed rom the pipe, so as to provide free s ace for the entrance and exit of air. These ugs 3, referably four in number, are located equa distances apart, and two, or all of them are provided with downwardlyprojecting Alegs 4, which enter the open upper end of the pipe and operate to hold the ca centrally over the pipe, the ca as shown, eing of greater diameterthan t e pipe, and the lugs or seats 3 being so located with relation to the edge of the cap, as to bring said lower edge in a lane below the upper end of the pipe, thus ully protecting t e upper end of the pipe, and at the same time providing for free ventilation, Two of the legs 4 are arranged diametrically opposite, and ea'ch is provided with laterally projecting shoulders-5 againstwhich the bifurcated ends 6 of the yielding saddle 7 bear, the bifurcated ends straddl-ing the legs carrying shoulders 5. The lower faces of the shoulders 5 against which the ends of the saddle 7 bear, are in a planebelow the top of the pipe l, so that when the saddle is straightened out and thus elongated as will be explained, th'e ends thereof will engage the inner surface of the pipe and lock the cap 2 thereto. This saddle which is made of metal, is curved or bow shaped. longitudinally, and is thicker at its center than at its ends, the latter being sufficiently thin and flexible to give or yield when the central portion thereof is forced upwardly by the screw 8. The head of the screw 8 is mounted in a countersunk hole in the center of the cap, and passes downwardly through a threaded opening in the center of the saddle, pins being provided for locking the screw to the cap and the saddle to the screw.

rThe ends of the saddle 7 are bifurcated so as to straddle the legs 4 and bear against the shoulder 5 on opposite sidesof the legs 4, hence it will be seen, that, by turning the screw 8 in they proper direction, the central portion of the saddle will be drawn upwardly, while upward movement of theends thereof will be prevented by the shoulders 5, thus causing the saddle to straighten out and elongate and forcing the free ends thereof into contact with the inner surface of the pipe 1. This Contact between the endsl screw by the securing pin, it cannot be lost by dropping into pipe l nor can it be disengaged from the legs 4f.

These caps and saddles may be of various sizes to fit the different sizes of pipe used, and the parts may be ofdifferent constructions and shapes from those described hence I would have it understood that I do not confine myself to the exact details'shown but consider myself at liberty to make such' changes and alterations as fairly come within the spirit and scope of my invention.

Having fully described my invention what l claim as new and desire to secure by Letters-Fatent, is

il, As a new articlev of manufacture, a cover for vent pipes comprising a cap provided with seats adapted to rest on the open upper end of a pipe and with legs projecting into the pipe, the said legs having shoulders, mscrew carried by the cap and locked thereto against longitudinal movement, a exible saddle mounted on the screw and havingA a sliding connection with the legs, the ends of said saddle bearing against theshoulders on the legs, and means for limiting the downward movement of the saddle on the screw, whereby the saddle is prevented roin disengagement with'tlie legs.

2. As a new article of manufacture, a cover for vent pipes Comprising a cap pro- Y erases vided with seats adapted to rest on the open shoulders, a screw carried bythe cap an locked thereto against longitudinal movement, a flexible saddle carried by the screw and having asliding connection with the legs, the ends or said saddle bearing against thenslioulders on the legs, and means for limlting the downward movement of tiie Saddle on tile screw, whereby the saddle 1s prevented from disengagement with the legs.

ln testimony whereof, l have signed this specification in the presence of two subscribing witnesses. v GERGE J'. DEHN.

Witnesses:

` Gno. P. MCCLEULAND,

FRANK WARCH.

Images