Improvements relating to Dies for Use in the Manufacture of Tesseroe for Mosaics.
Year: 1899

page_text: Date of Application, 16th May, 1899-Accepted, 8th July, 1899
COMPLETE SPECIFICATION.
Improvements relating to Dies for Use in the Manufacture of
Tesseroe for Mosaics.
We, ANTONIO TRAVAGLINI, of 718, Percy Street, and JonN BISHOP HALL, Of
1223, Arch Street, both in Philadelphia, Pennsylvania, United States of America,
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:-
This invention relates to dies for making mosaics, and consists of an improved
construction thereof, whereby we are enabled to make the cut at the face of the
mosaic sharp and well defined and in addition to fracture the blank from which
the mosaics are cut on substantially a right line or transversely, so that it is
unnecessary to finish or true the mosaics after cutting.
:
It further consists of novel details of construction, all as will be hereinafter
fully set forth and particularly pointed out in the claims.
Referring to the accompanying drawings
Figures 1 and 2 represent perspective views of male and female dies, embody-
ing our invention, the same being shown in detached position.
Figure 3 represents a plan view of a support for the female die.
Figure 4 represents a perspective view of a stop employed, the same being
shown in detached position.
Figure 5 represents a perspective view of the blank from which the mosaics
are cut and the support therefor.
Figure 6 represents a vertical sectional view of the dies and their adjuncts
showing the parts in assembled operative position.
Figure 6 represents a plan view of the female die shown in Figures 2 and 6.
Figure 7 represents a plan view of a four-sided female die.
Figure 8 represents a plan view of a finished mosaic.
Figure 9 represents a perspective view of another embodiment of the principle
of our invention.
Figure 10 represents a longitudinal sectional view of Figure 9 showing the
parts in assembled position.
Figure 11 represents a transverse section on line - Figure 10.
Figure 12 represents a plan view of a portion of the interior of the outer
socket, seen in Figure 11.
:
Similar letters of reference indicate corresponding parts in the figures.
A designates a male die, the same being of polygonal shape in cross section and
being reciprocated in any suitable manner, and as the actuating device forms
no part per se of the present invention, a detailed description thereof is deemed
to be unnecessary.
B designates the female die, the same having the neck C projecting therefrom
and being adapted to rest in the seat D of the bed or support E, the latter having
the tongue F, which is adapted to enter the recess G of said neck, whereby the

page_text: female die is held in fixed position, although it will be apparent that other
devices may be employed for holding said female die in fixed position relative to
its support, without departing from the spirit of our invention.
The female die B has a polygonal opening H therein, the number of the sides
of which corresponds with the number of sides of the male die A, the upper
portion of said female die being provided with the bevelled or chamfered faces J,
whereby the cutting edges K are produced. Adjacent and exterior to the cutting
edge K is located the auxiliary or shear knife L, which latter has an important
function, to which especial attention is called, since it serves to fracture or sever
the block M, so as to make a clean transverse cut N, as will be apparent from
Figure 6, said shear knife in the embodiment shown being located adjacent the
junction of a pair of cutting edges. As best shown in Figures 2 and 6 this
auxiliary or shear knife L consists of a knife or cutting edge situated
exterior to and independent of the cutting edge of the die. It is
also situated on the feed side of the die and at a right angle to the line of feed
so as to engage and sever the blank transversely just outside of the part thereof
that is formed into the mosaic. The polygonal internal walls P of the female
die diverge as indicated in Figure 6, until they meet the passage Q, whereby
sufficient clearance is provided for the block or mosaic R, a side elevation of
which is seen in Figure 6, special attention being called to the fact that the under
face R of said mosaic is provided with sharp and clear cut edges which are
attained by reason of the employment of the shear knife L when used in connec-
tion with the male and female die as explained, it being seen that by reason of the
location of said shear knife, the block from which the mosaic is formed is
instantly fractured or separated from the body of the blank in a right line sub-
stantially simultaneously with the impact of the male die therewith, so that
a minimum amount of material has to be removed from the mosaic to form the
outer contour thereof prior to its passage through the female die, as indicated in
Figure 6.
S designates a suitable stop which is held in position in the bed E by any
suitable means.
Turning now to Figures 8 to 10 inclusive, we employ two hollow dies T and T,
each of which are provided with a polygonal opening U, the cutting edges of
which are formed by beveling or chamfering the outer portion of the dies as
indicated at V.
M designates the blank of marble or other material, as before which is sustained
upon the support M* and is adapted to be moved against the stop or abutment S
shown in dotted lines, which it will be understood is of substantially the same
construction as that shown in Figures 4 and 6.
The inner walls of the openings U diverge as indicated at W, until they meet
the passage X in each die. The left-hand die T is seated in the sleeve Z and
said die and sleeve have only a reciprocating motion in their head Y, while the
other die T has in addition to its reciprocating motion, a slight rotary move-
ment, when near the end of its stroke, which is caused by the tongue Y of the
sleeve engaging the walls of the groove A¹ formed on the interior of the left
hand head Y, said die TX and sleeve being secured to each other in any suit-
able manner, so that they move in unison and said groove A¹ being slightly
curved near its terminal B¹ so that simultaneously with the advance of the die T
a slight movement is imparted thereto near the end of its stroke, when the said
die is in substantially the position shown in Figure 10, whereby a slight turn
is also given to the mosaic C₁ and the same is fractured at the point D', each
having a clear cut and well defined face R
It will of course be understood that we omitted the mechanism for moving the
dies T and T towards and away from each other, since the same. form per se no
part of the present invention and any detailed explanation thereof is believed
to be unnecessary.
It will of course be understood that squares may be produced by employing

page_text: the dies B seen in Figure 7 and that other shapes or contours of mosaics can
he produced without departing from. the spirit of our invention.
In the construction shown in Figure 7, in which a square opening is shown
in the female die, the employment of a shear knife corresponding with the
knife L is unnecessary, but for cutting circular or other polygonal mosaics, I find
the best results are attained by using the shear knife L, adjacent the cutting
edges of the die, as shown in Figure 2..
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is:-
1. A die consisting of a body portion provided with a cutting edge and with an
auxiliary cutting edge or shear knife exterior thereto.
2. A female die consisting of a body portion provided with a cutting edge
and with an auxiliary cutting edge or shear knife exterior thereto.
3. The combination of a pair of dies, one of said dies consisting of a body
portion provided with a cutting edge and with an auxiliary cutting edge or
shear knife situated exterior thereto, and on the feed side of said die and adjacent
to the main cutting edge thereof, whereby the blank from which the mosaics are
cut will be severed or fractured on substantially a transverse line.
4. The combination of opposing co-acting longitudinally movable dies having
polygonal openings provided with cutting edges, one of said dies being capable
of rotary movement at or near the end of its stroke, and means for imparting
rotary movement thereto.
5. The combination of longitudinally movable dies having polygonal openings
provided with cutting edges, one of said dies being mounted in a longitudinal
guide, a longitudinal groove in one part of said guide having a deflected end
portion, and a tongue on the other part of said guide sliding in said groove.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicants.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicants.