Coffee Brewing Device

This invention relates to coffee brewers.

In the past there have been numerous types of coffee brewing apparatus; however, the introduction of sugar into the coffee once brewed and while it is still at an elevated temperature level is desired. It is for this purpose that this invention provides a means in the form of an annular brewed coffee distribution ring with perforated holes which is arranged on the floor of the upper container and through which brewed coffee is constrained to pass to mix and blend with the sugar while at an elevated temperature to provide a particularly brewed and highly tasteful cup of coffee.

In accordance with these objects, and, the general object of providing an improved coffee brewing apparatus which is economical to manufacture and which is adapted to make a particularly brewed and tasteful cup of coffee as is described more fully hereinafter, the instant invention will now be described with reference to the accompanying drawings, in which:

FIG. 1 is a view, partly in cross section of the coffee brewing apparatus,

FIG. 2 is a view taken on the plane indicated by the line 2--2 of FIG. 1 and looking in the direction of the arrows,

FIG. 3 is a view of the upper central zone of the invention shown in FIG. 1 and showing a slightly modified embodiment thereof.

Referring to the drawings wherein like reference characters designate like or corresponding parts throughout the several views, there is shown, in FIG. 1, a coffee brewer generally designated by the numeral 12 which comprises a lower container 14 in screw-threaded engagement as at 16 with an upper container 18 having a pouring spout 20 and a handle 22. Additionally, it may include a lid 24 with a knob 26 which is hingedly connected as at 28 to the upper container. Between the upper and lower containers there is suspended by an annular flange 30 a) a coffee holder 32 comprising an annular skirt spanned by a perforated floor 36 and b) an upper annular seal 38 which rests on the flange 30 and which mates with the lower shoulder of the upper container, the shoulder being annular and being designated by the numeral 40. The coffee holder has a perforated lid or plate 42 with an outturned flange 44 which captivates the seal 38 which is of rubbery material and is in the shape of a washer. The coffee holder includes a downwardly extending portion 50 which merges to a stem 52 which terminates at a lower end 54 adjacent the bottom 56 of the lower container. The bottom of the upper container is provided with a centrally raised floor portion, so that the outer zones such as 60 of the floor of the upper container bow outwardly downwardly forming a dome-shaped portion which through the mouth zone 62 leads to an upwardly extending stem 64 at the top of which there is connected, as at 66, an elbow piece 68 which is connected by the radially outwardly extending coupling 70 to a downturned elbow 72 and there is a downwardly extending generally vertical tube 74 which leads to a lower end 76 adjacent the floor where through an elbow, as at 82, it is connected to an annular cylindrical distribution ring 84 which has a pattern of holes such as 86 in the lower surface 88 thereof and which is capped at the end as at 90.

In use, coffee is positioned in the holder and the top container is in screw-threaded engagement with the lower container after the lower container has been filled with water. It is then heated whereupon the water rises through the stem 52 entering the mouth 54 through the coffee holder and charge of coffee and upwardly through the mouth 62 and down through the downwardly extending stem 74 to exit through the perforations of the annular ring at the floor of the upper container. In the upper container there may be a charge of sugar on the floor through which the heated coffee will be constrained to pass as it enters the upper chamber. There is a safety valve 98 provided in the lower container and, additionally, at the elbow 72 there is provided a vacuum break 99 in the form of a hole. Thereafter, when the coffee cools somewhat it will not be drawn back through to the bottom container but will remain in the upper container, since the pressures will be equalized by the presence of the hole 99.

With respect to FIG. 3, the upwardly extending stem 101 terminates at a threaded end 102 to which there is connected a threaded collar 104 which is captivated by a shoulder 106 on an elbow 108 which terminates at an open end which is connected to a downwardly turned elbow 110 through a connector pipe of short length 112 and wherein the downwardly extending portion 114 is press-fitted to the downturned portion 116 of the elbow 110. In this manner, the same may be separated conveniently. Also, it will be noted that the vacuum relief hole 118 is provided.