Improvements in the Manufacture of "Matrices" for Type Casting.
Year: 1892

page_text: Date of Application, 30th Aug., 1892-Accepted, 15th Oct., 1892
COMPLETE SPECIFICATION.
Improvements in the Manufacture of "Matrices" for Type Casting.
I, ABRAHAM FELS, of Savoy House, Strand, in the County of Middlesex,
Merchant, 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 :—
The invention has for its object improvements in the manufacture of "matrices"
for type casting whereby the cost is considerably reduced.
My invention is represented in the accompanying drawing, in which
"
Figure 1 represents a face view of a "matrix manufactured according to my
invention.
Figure 2 is a side view, and Figure 3 is a cross section of the same.
Figure 4 represents a face view of two type, each in the centre of a square of
type metal cast around the same, and separated from each other by a thin piece
of metal.
Figure 5 represents a side view of one of the type shown at Figure 4, and
Figure 6 represents a face view and Figure 7 a cross section of a bar of
"matrices" formed by electro deposition upon a collection of original type.
66
In carrying my invention into effect I use blocks, such as represented at
Figures 4 and 5, made in the well known manner by casting around a type a, a
block of type metal, usually known as a fusible." I place a number of these
type blocks a bin a frame, and, intermediate thereof, I place a thin piece of
metal c. I clamp this collection of type blocks with their intermediate thin pieces
of metal closely together and, by the well known process of electro deposition, I
form a multiplex "matrix" from said type blocks in the form of a ribbon or bar,
such as that represented at Figure 6. I then trim the edges and back of this
multiple "matrix" bar by means of suitable cutters, so as to make the section
thereof of dovetail form, as represented at Figure 7. I then cross cut such ribbon
or bar at the lines d d and thereby form a number of separate "matrices"
e, each
of which I mount separately in a bar f, see Figures 1, 2 and 3. The bars are
cut off a bar of brass or other suitable metal of the required section to proper
length, a dovetail recess f¹ is then formed across such bar by means of a suitable
cutter, and the lower edges of the dovetail recesses are slightly bevelled. A
matrix block e is then pushed into the dovetail recess of the bar, and by a
few light blows of a hammer, the lower edges of the "matrix" block e are spread
over the bevelled edges of the recess f', so as to rivet the block e securely in
position in the recess f¹.
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The "matrix" block bars for "matrices," when finished, are suitable for use with
the moulds of type casting machines in the ordinary manner.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
1. A "matrix" of a type casting machine formed of a dovetail "matrix "block
fitted into a dovetail recess in a carrying bar, substantially as herein shown and
described.
2. In the manufacture of "matrices" for type casting machines, the production
of a ribbon of type matrices by electro deposition upon a collection of type
blocks separated or not from each other by a thin metal plate, the trimming of
the edges and back of such matrix ribbon to form it of a true dovetail section,
the division of such matrix ribbon into separate matrix blocks, and the mounting of

page_text: said matrix blocks in dovetail recesses of carrying bars, substantially as herein
shown and described.
Dated this 30th day of August 1892.
A. ELN,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.