Improvements in Moulders' Flasks.
Year: 1891

page_text: Date of Application, 23rd July, 1891-Accepted, 29th Aug., 1891
COMPLETE SPECIFICATION.
[Communicated from abroad by MILLARD F. RICHARDSON, of Liberty, Indiana,
United States of America, and HORACE GREELY SWOPE, and EDWARD C.
BOYER, both of Dayton, Ohio, United States of America.j
Improvements in Moulders' Flasks.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent
Agents 45 Southampton Buildings, in the County of Middlesex 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:
My invention relates to flasks. The object of the invention, primarily, is to
provide a drag and cope which can be adjusted in size to suit varying sizes of
patterns, so that instead of having a series of different size flasks, one flask may
be adapted to be used with the varying sizes of patterns for casting. Another
object of my invention is to so construct the adjustable sections of the cope and
drag that the dowel pin may be tightened by the adjustment so as to hold the
cope rigidly in position, take up the wear of the dowel pin and slot. All of which
will be fully set forth in the description of the accompanying drawings making a
part of this Specification, in which-
Fig. 1 is a perspective view of my invention.
Fig. 2 is a detail view of the
thrown open.
Fig. 3 is a section on line x, x, Fig. 1.
cope
b.
A represents the drag, and B the cope; each of these sections is a counterpart
of the other and made in a similar manner. Each side and end of the cope or
drag are made of two sections a, b; each section having a slot e, and connected
together by tie-bolts, these bolts having a head d upon the inner side and a thumb
screw nut g, tapping on to the threaded end of the bolt to draw the two sections
together and clamp them in any desired position of adjustment. Each side and
end of the cope and drag being made of two adjustable sections, it follows that
the same may be extended or contracted by sliding the section a upon the section >>,
whenever the thumb nuts are slackened, thereby increasing or decreasing the
dimension of the cope. C represents a hinge uniting one corner of the cope or
drag together, so that it may open into the form shown in Fig. 2. D represents a
catch for locking the opposite corners together. E represents a dowel pin which is
preferably attached to the sliding plate F through which pass the tie bolts, so that
said dowel pin may be adjusted in the center when the drag is extended or con-
tracted; the plate F slides to the right or left as the case may be, to bring it into
a central position.
H represents a similar plate attached to the cope with a socket or opening
pierced through the same, adapted to receive the dowel pin E. I have shown
this dowel as three cornered and the orifice of a similar shape, which is the preferred
form. An advantage arises in this construction of flask in that the adjustment of
the cope upon the drag tightens the dowel pin, the sections of the cope are drawn
together sufficient to take up all lost motion of the dowel pin before the thumb
nuts are tightened, thus taking up lost motion to accommodate itself to the wear of
the dowel pin and make a firm union of the cope and drag, so that the two may be
held in exact registering positions for casting the forms molded therein.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent. I declare that what I claim is :—
l—In a flask, a drag having its sides and ends each composed of longitudinally

page_text: slotted, superimposed sections, and tie bolts passing through the slots of the sections
and clamping the latter together while enabling such sections to be adjusted
longitudinally with relation to each other, substantially as described.
2-The combination in a flask, of the drag and cope having their sides and ends
each composed of longitudinally slotted, superimposed sections, tie bolts passing
through the slotted portions of the sections, and means for tightening the tie bolts
to clamp the sections together, substantially as described.
F
3-The combination of the drag A having its sides adjustable in length, the
longitudinally adjustable plate I carrying the dowel E, and the cope B adjustable
similar to the drag and provided with the adjusting socket plate H, substantially
as specified.
Dated this 23rd day of July 1891.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.