Press for Forming Hollow Articles Page: 3 of 3
[1], 2 p. : ill. ; 23 cm.View a full description of this patent.
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927,622
located thereon. The shaft 17 is then ro-
tated and the plunger .14 is moved clown
toward the mold 7 and at the same time the
mold bottom 10 descends within the mold
5 and carries the ball of clay with it. During
this movement, which is greater in extent on
the part of the plunger head 13 than the
mold bottom 10, the said mold bottom 10 is
seated in the recess 6 and the plunger head
10 14 continued downwardly a short distance
until said plunger reaches the end of its
stroke. When this occurs the area between
the said plunger head 14 and the mold bot-
tom 10 and the sides of the mold 7 have
1: been reduced to such an extent as to press
the clay firmly against the inner sides of the
mold and around the pins 9 and into the re-
cesses 16 at the upper side portion of the
said plunger head, thus the hollow article is
-20 formed. Tlie shaft 17 is then rotated in the
opposite direction and the plunger head 14
and the mold bottom 10 are brought back to
the positions indicated by the dotted lines
in the figure of the drawing. When the
25 mold bottom 10 is in its uppermost position
the article which has previously been formed
is lifted therefrom and the said article will
be provided in its bottom with perforations
formed by the pins 9 and at its upper edge
so with lugs formed by the recesses 16 in the
plunger head 14. Thus it will be seen that a
press is provided upon which is mounted a
frame for reciprocatory movement and a
plunger which moves positively with the
35 said frame. A mold bottom is operatively
connected with the frame but does not move
positively with the same until the said frame
arrives at certain points in its movement
when the said mold bottom moves posi-
4 o tively therewith.When it is desired to form a hollow pot
without perforation in its bottom the plate
8 is dispensed with but the operation as
above described is the same.
Having thus described my invention, what 45
I claim as new and desire to secure by Let-
ters Patent is:
A press comprising a supporting frame
having guides, a stationary table carried
by the frame and provided with a surface 50
recess, a mold rigidly secured to the table
and surrotnding the recess therein, a re-
ciprocating frame mounted for vertical
movement in the guides of the supporting
frame, means for reciprocating the vertically 55
movable frame, t plimger carried by the re-
ciprocating frame, and provided with spaced
laterally extending ears, a rod depending .
from and detachably secured to said ears
and provided with a hollow plunger head 60
arranged to enter the mold, a mold bottom
normally seated in the recess in the table,
a plate secured to the upper surface of the
mold bottom and provided with a plurality
of spaced perforating pins projecting within 65
the mold, a sleeve depending from the mold
bottom and having its upper end bearing
against said plate, a stein carried by the re-
ciprocating frame and operating within said
sleeve, the plunger head being provided 70
with a flange arranged to bear against the
upper edge of the mold when said head is
moved to operative position within the mold.
In testimony that .I claim the foregoing
as my owin, I have hereto affixed my signa- 75
ture in the presence of two witnesses.
ROBERT LUCI US WILLIAMS.
Witnesses:
H11. W. FREEMAN,
J. W. STuir-r.
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Reference the current page of this Patent.
Williams, Robert Lucius. Press for Forming Hollow Articles, patent, July 13, 1909; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth508265/m1/3/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.