Improvements in Clamps for Molders' Flasks.
Year: 1892

page_text: COMPLETE SPECIFICATION.
Improvements in Clamps for Molders' Flasks.
I, WILLIAM WHALLON ARCHIRALD, of La Fayette Street, Newport News,
Warwick County, Virginia, United States of America, Clerk, 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 clamps for molders' flasks; and it consists essentially of
two symmetrical and reversible pieces with interpenetrating locking arms, the said
arms on one piece being adapted to engage in corresponding recesses on the
opposite piece.
By having a number of the said recesses, and the said interpenetrating arms
obversely and symmetrically disposed so that the arm of one piece is adapted to
engage in any one of the recesses of the opposite piece, the clamp may be set
at the approximate position desired and then lined up with strips or wedges.
In order that the locking arms may slide readily into the grooves and hold firmly
therein, the said arms are preferably made slightly tapering and wedge-shaped,
while the grooves are dovetailed and taper somewhat, registering with said locking
arms.
This preferable form of construction is shown in the accompanying drawings,
wherein the same parts are indicated by the same letters.
Fig. 1 represents a perspective view of an ordinary form of molders' flask, the
parts being clamped together according to my invention.
Fig. 2 represents a side view of two of the clamp pieces and illustrates the
method of interlocking the same, and
Fig. 3 represents an end view of one of the two interlocking pieces which
together constitute the clamp.
A and A' represent the two sections of the flask, which may be of any desired
shape.
B and B represent the two clamp-pieces, which are usually cast in the same
mold and are exactly similar in every respect. They are preferably made of cast
iron on account of its cheapness, although many other metals would do equally
well.
into a number of
notches, whose sides are slightly dovetailed, and at the same time the sides b₁
taper somewhat, so that the protruding arms B³, whose sides also taper upward
and outward, may readily be slipped into any of the said notches and be wedged
therein snugly. The holding-arms B are adapted to go over and under the sides
of the flask, and the wedges C press the two sections A and A' of the flask firmly
together. It will be obvious that the two clamp-pieces may be readily applied or
removed, that they need no special clamping apparatus, such as clamp-screws, bands,
&c., and that they constitute an exceedingly cheap, convenient, and simple means of
securing the two sections of the flask together.
One edge of each clamp-piece is divided by lugs

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. The clamp for molders' flasks as herein described with reference to the
drawings hereunto annexed.
2. A clamp for molders flasks consisting essentially of two symmetrical
reversible pieces having interpenetrating locking arms, with recesses between the
arms on each piece to receive the arms on the opposite piece, substantially as
herein described:
.
3. A clamp for molders' flasks, consisting of two symmetrical and reversible
rectangular pieces having holding-arms at their outer ends, dovetailed grooves on
the side opposite said holding-arms, and wedge-shaped locking-arms adapted to
slide into said dovetailed grooves, substantially as described.
4. A clamp for molders' flasks, consisting of two symmetrical and reversible
rectangular pieces B, having holding-arms B³, adapted to engage the sides of the
flask, lugs having inclined sides 61 and 62, forming wedge-shaped dovetail grooves,
and wedge-shaped arms B', adapted to engage in any of said grooves, substantially
as and for the purposes described.
Dated this the 27th day of May 1892.
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.