Improvements in the Matrices of Linotype Machines:
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in the Matrices of Linotype Machines:
We, THE LINOTYPE COMPANY, LIMITED, of No. 188, Fleet Street, in the City
of London, Sole Proprietors of, and Sole Manufacturers, Vendors and Licensors
under, the "Linotype" Patents, MARK BARR and WARWICK JAMES LEWIS, both
of the "Linotype Works," Broadheath, in the County of Chester, Engineers,, do
hereby declare the nature of this invention to be as follows:-
The present invention relates to improvements in the matrices of linotype
machines.
The Specification of Letters Patent 9732 of 1895 describes in detail the combi-
nation with a matrix of a side wall of steel or equivalent hard metal extending
across it to prevent the formation of fins on the linotype by reason of the side
walls when of the comparatively soft metal of the rest of the matrix having
been broken down.
The present invention substitutes iron or steel as a material for the softer
metals mentioned in the said specification, and retains the steel side walls. It
also includes an improved method of holding the said side walls to the matrix
body.
The metals, iron and steel; mentioned in the preceding paragraph have, as far
as they themselves are concerned, no affinity for hot type metal; that is, they
will not allow it to adhere to them, or, as it is termed by linotype operators, solder
on to them, when it is injected against them during, the operation of casting the
linotype. Other metals possessing a like property, are to be understood, for
the purpose of this specification, as the equivalents of either of the two, provided
that they are as hard as the material for a matrix ought to be. Aluminium and
platinum both possess the like property above mentioned, but the softness of
the former and the cost of the latter disqualify them.
Our improvement in means for holding the side walls to the matrix body
relates to the rivetting of thein thereto. It consists in countersinking the
matrix body at each end of the rivet hole therein and keeping the rivet hole in
the side wall of the same size as that in the body, whereby the spreading of the
rivet end swages an annulus of the side wall down into the countersunk hole,
above which the spread takes place and finishes flush with the adjacent surface
of side wall or with the surface common to both side wall and matrix side. The
rivets may be either solid or tubular. If they are the latter, they are held on
pins which guide them to the rivet holes in the matrix body. A rotating or
other suitable type of spreading tool is then brought up to each rivet end so as
to spread the latter to the extent described above.
Dated the 7th day of February 1898.
PHILLIPS & LEIGH,
Agents for the. Applicants.

page_text: 66
Improvements in the Matrices of Linotype Machines,
We, THE LINOTYPE COMPANY, LIMITED, of No. 188, Fleet Street, in the City
of London, Sole Owners of and Sole Licensors and Manufacturers under the
Linotype" Patents, and MARK BARR and WARWICK JAMES LEWIS, both of
The Linotype Works, Broadheath, in the County of Chester, Engineers, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
-
The present invention relates to improvements in matrices of linotype machines,
more especially in the matrices described in the Specification of Letters Patent
9732 of 1895.
It consists in improved means for holding the steel side walls to the matrix
body.
Referring to the accompanying sheet of drawings:-
Figure 1 is a vertical section taken along the line 1-1 of Figure 4, shewing
the parts assembled and ready for being rivetted together.
Figure 2 is a similar vertical section illustrating a modification in the side
walls.
Figure 3 is a similar vertical section indicating the means by which the
rivetting together is effected.
}
Figure 4 is a side elevation of a matrix made according to the present invention
y is the matrix body. y and y are the well-known notch and formative
cavity, respectively. 90, y, are the two steel side walls, one on each side of the
matrix body. Instead of extending across the matrix body as in the specification
above mentioned, they are only wide enough and long enough to admit of being
rivetted to that body by the special means described further on, and stand
vertically each in a vertical groove y71 in the side of the body y3, which groove
is so positioned that the rear edge of the wall y coincides with the bottom of
the notch y.
A groove 371 is as deep as the combined thickness of a side wall y
and the spread of the end of a rivet, require it to be for there to be no projection
of rivet and beyond the side of the finished matrix.
Each pair of side walls y⁹0 is rivetted to the body y as follows. Holes are
made through the said body y" and walls yo, yo, for as many rivets 72 as there
are to be. The use of two rivets y2 to a pair of side walls 90 is illustrated, but
that number may be increased. The holes in both matrix body y" and side walls
yo, yo, are just large enough to take the rivets. The holes in the matrix body y³ are
countersunk at both ends, while the holes in the side walls yo, y, are of the same
diameter as the central portions of the holes in the matrix body y"; so that the
spreading of the end of a rivet y, swages an annulus of the respective side
wall down into the adjacent countersink in the matrix body y, and finishes
off flush with the adjacent outer surface. of the said side wall, or with the surface
common to both side wall yo and matrix body y³¹.
The modification illustrated in Figure 2 consists in the rivet holes in the side
walls being countersunk from the outside, to make the margin of the hole
elastic. Such countersink is preferably of the same size as the adjacent counter-
sink in the matrix body y³¹.
The rivets y may be either solid or tubular. If they are tubular, they may be
held on pins to guide them to the rivet holes. A rotating or other suitable
type of spreading tool y73 is then brought up to each rivet end so as to spread
the latter to the extent described above, as indicated in Figure 3, which shews

page_text: the two ends of a pair of rivets y duly spread and the two spreading tools y™³
withdrawn for the shifting or removal of the matrix.
Neither the pins nor the spreading tools above mentioned form any part of
the present invention, and for that reason, they are not specified in greater detail.
The dotted lines on the right hand side of Figure 4, illustrate the application
of the present invention to a matrix body which has a formative cavity y' in
each of its edges. Matrices having two formative cavities in the same edge,
one above the other, are known and used-see the Specification of Letters Patent
18886 of 1895. The present invention is applied to them by increasing the
length of each side wall y so as to extend as much beyond both such formative
cavities as the accompanying figures show it to extend beyond the single one.
The number of rivets y72 is also increased, if need be.
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. The herein before described combination of matrix body having rivet holes
countersunk at each end; a steel side wall for each side of the formative cavity
or cavities, having rivet holes of the same diameter as the central portions of
those in the matrix body; and rivets holding the said side walls to the matrix
body by having their ends spread flush with the respective side walls and swaging
down annuli of the side walls into the respective countersinks in the matrix body.
2. The herein before described combination of matrix body having rivet holes
countersunk at each end; a steel side wall for each side of the formative cavity
having rivet holes of the same diameter as the central portions of those in the
matrix body and countersunk from the outside; and rivets -holding the said side
walls to the matrix body by having their ends spread flush with the respective
side walls and swaging down the countersunk annuli of the side walls into the
respective countersinks in the matrix body.
.
Dated this 7th day of November 1898.
CHAS. S. WOODROFFE,
188, Fleet Street, E.C., Agent for the Applicants.