Year: 1888

page_text: Date of Application, 5th Dec., 1888
Complete Specification Left, 7th Feb., 1889
Complete Specification Accepted, 6th Apr., 18539
We, JOHN VON DER POPPENBURG of 32, Waldemar Strasse and CARL RUDOLPH of
16, Nettelbeck Strasse, Berlin, Germany, manufacturers, do hereby declare the nature
of this invention to be as follows:
Our invention relates to improvements in the manufacture of cocks for all purposes
and has for its purpose keeping the plug tight in the shell, without the necessity of the
usual stuffing box.
Our invention consists in placing a liner of fiberous elastic material between the plug
and shell, the liner being held fast to the shell, so that the plug turns round in the
liner instead of in the shell as is generally the case; the liner is provided with a hole
opposite the outlet in the shell, by this arrangement the plug does not require to be
ground in the shell, which is a troublesome and costly operation, and if the cock should
leak all that is required to do, is, to fit a new liner in place.
In order to make our invention more clear, we refer to the accompanying
sheet of drawings, in which similar letters denote similar parts throughout the
different figures.
Fig. 1 shows a vertical section of our improved cock.
Fig. 2 is a section of the same through line a ẞ fig. 1.
The improved cock consists of the shell A with inlet and outlet branches of any
required form, the shell A is bored out conical to a taper of about 1 in 5 or any other
suitable taper.
A hollow fiberous elastic cone C is placed in this shell A, the insido of the shell
being left rough so that the packing may have a hold on the same.
The packing
cone C is turned over at the bottom so that the bottom of the plug B when
in place may rest upon it and keep the packing from coming out. This packing
ring C may be made from leather, vulcanite or any other suitable elastic material.
The plug B is turned smooth (but it is not required to be ground) to the same taper
as the inside of the packing C and fitted in place; the plug is held in place by the
nut D which is provided with the holes for the purpose of screwing the nut D
down.

page_text: The shank G of the plug is carried up through a hole in the nut D and fitted with
a handle E.
The handle E forms at the same time a protecting cover for the nut D, the handle
being held on the shank G by the nut F.
In order to shut the cock all that is necessary to do is to turn the handle E so far
that the outlet hole in the plug is completely covered by the elastic packing C, in this
position the plug B is held completely gas or fluid tight in the shell, by means of the
elastic packing C. This packing C takes the place of a stuffing box for the shank,
as none is required. It is scarcely possible for this cock to leack but if it should, all
that is necessary to do to tighten the same, is, to screw the nut D further down or put
in a new packing liner which is much simpler and cheaper than grinding the plug
in the shell or the making of a new plug as must be the case in cocks of the usual
construction.
"The cock may be made of any desired design such as straight-through, three-way or
as a simple open-bottom.cock as shown in the drawing.
Dated Berlin. this 3rd day of December 1888.
A. KUHNT & R. DEISSLER,
38, Alexander Strasse, Berlin C., Germany,
Agents for Applicants.

page_text: WO JOHN VON DER POPPENBURG of 32 Waldemar Strasse and CARL RUDOLPH
of 16 Nettelbeck Strasse Berlin Germany, manufacturers do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
Our invention relates to improvements in the manufacture of cocks for all purposes
and has for its purpose keeping the plug tight in the shell without the necessity of the
usual stuffing box.
Our invention consists in placing a liner of elastic material between the plug and
shell, the liner being held fast to the shell, so that the plug turns round in the liner
instead of in the shell as is generally the case; the liner is provided with a hole
opposite the outlet in the shell, by this arrangement the plug does not require to be
ground in the shell which is a troublesome and costly operation, and if the cock should
leak, all that is required to do, is to fit a new liner in place.
In order to make our invention more clear, we refer to the sheet of drawings which
accompanied our Provisional Specification in which similar letters denote similar parts
throughout the different figures.
Fig. 1 shows a vertical section of our improved cock.
Fig. 2 is a section of the same through line a ẞ fig. 1.
The improved cock consists of the shell A, with inlet and outlet branches of any
required form; the shell A is bored out conical to a taper of about one in five or any
other suitable taper.
A hollow clastic cone C is placed in this shell A the inside of the shell being left
rough so that the packing may have a hold on the same. The packing cone C is
turned over at the bottom, so that the bottom of the plug B when in place
may rest upon it and keep the packing from coming out. This packing ring C may be
made from leather vulcanite or any other suitable elastic material.
The plug B is turned smooth (but it is not required to be ground) to the same
taper as the inside of the packing () and fitted in place, the plug is held in place
by the nut D which is provided with the holes for the purpose of screwing the
nut D down.
The shank G of the plug is carried up through a hole in the nut D and fitted with
a handle E.
The handle E forms at the same time a protecting cover for the nut D, the handle
being held on the shank G by the nut F.
In order to shut the cock all that is necessary to do is to turn the handle E so far
that the outlet hole in the plug is completely covered by the elastic packing C; in
this position the plug B is held completely gas or fluid tight in the shell by means of
the elastic packing C. This packing C takes the place of a stuffing box for the shank
as none is required. It is scarcely possible for this cock to leak, but if it should, all
that is necessary to do, to tighten the same, is to, screw the nut D' further down, or put

page_text: in a new packing liner, which is much simpler and cheaper than grinding the plug in
the shell, or the making of a new plug, as must be the case in cocks of the usual
construction.
The cock may be made of any desired design, such as straight through, three-way
or as a simple open bottom cock as shown in the drawing.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is,
1) The combination of a hollow cone C made of any suitable elastic material, fitting
firmly against the rough inside surface of the shell A with a smooth conical plug B
having a handle E and with a nut D for the purpose described.