William L. Roorbach Bottle Stopper
William L. Roorbach’s patent application was filed February 18, 1884 and specified:
I, William L. Roorbach…of
Figure 1 is a vertical section of a bottle and stopper embodying my invention. Fig. 2 is a side elevation of the seat of the stopper…
My invention relates to the class of bottle-stoppers in which a bottle with an internally-grooved neck is used in connection with packing and a globular stopper, the present invention being an improvement in the…Patent…granted to me on the 20th day of February, 1883…
C represents a rubber bushing or packing which is fitted to the groove B and constructed in Fig. 2 of two truncated cones, c c, united at their narrow ends, so as to conform exteriorly to the shape of the groove B, the inner face being inclined inwardly from the top and bottom, the packing, however, being of greater diameter than said groove, so that it requires to be compressed in order to be fitted in position, and when it is located it hugs the ridge of the neck and spreads into the upper and lower faces a’ a’, of the groove, leaving a ridge, b, on the packing.
D represents a spherical or globular stopper, the diameter whereof is less than the space within the ridge of the packing, the stopper being inserted into the bottle prior to location of the packing…
In my former patent the packing is of cylindrical form, and when compressed it assumes the double conical or inclined form of the groove, but this is only true to a limited extent, for the upper and lower portions of the packing are liable to remain loose and to slip from position, thus imperfectly holding the stopper.
In the present case the exterior of the packing is primarily of the shape of the groove, and when the packing is compressed and located it expands and fully occupies said groove and tightly rests therein, so that its upper and lower edges abut against the upper and lower walls of the groove without being uncovered or liable to uncover, and the packing is reliably restrained by the upper wall of the groove and prevented from slipping off when the packing is forced upwardly by the stopper, due to the pressure within the bottle. The construction of the packing also forms a tight joint at all points between the packing and walls of the groove, whereby leakage thereat is prevented.
This is the third of three inter-related patents filed
by William L. Roorbach, with one-half interest assigned to S. Twitchell
& Brother of