
Useful Hotmetal Linecasting Matrix Information – 1966 era.



How to Order
The Mergenthaler Linotype Company carries in
stock a full supply of matrices to meet the
exacting demands of printers throughout the
world. Matrices can be supplied for composition
in over 900 different languages and dialects.
With the huge number of characters available, it
is important that you give careful attention to
accuracy of detail in preparing orders. Orders should be typewritten, preferably, and the name
of face, triangle number, point size and quantity
of matrices clearly indicated. A copy of each
order should be retained for reference.
Matrix Order Forms. Always use Linotype order
forms, which are supplied in any quantity on
request. This way, you can be assured of the
best possible service.
Always use the correct order form. They are
supplied for Regular Characters, Special
Characters, Accents, Typographic Refinements
(including one and twoletter logotypes, pre
react italics, twoletter small caps), Fractions,
Border Matrices and Matrix Slides, and for all
foreign characters. Use one sheet for each face
and individual point size.
It will help us serve you better if you indicate the
specific model for which the matrices are
intended (and the bridge number, if required),
the keyboard layout and the particular style of
magazine to be used. This is essential
information, since matrices for various models differ.
Full Name of Face. The triangle ∆ number and full name of face.
8 ∆34 Corona No. 1 with Italic and Small Caps
8 ∆232 Corona No. 2 with Bold Face No. 2
8 ∆568 Corona with Bold Face No. 2
We frequently receive orders calling merely for "8 point Corona." As shown above, this face (as well as many others) is made in various combinations; in such cases, it is impossible to fill the order correctly
without requesting further information.












Triangle Numbers. The triangle mark on a matrix
is the identification of the Mergenthaler Linotype
Company, and the system of marking matrices is
shown on page 4. When uncertain of the correct
name of face, you may order matrices according
to the numerical marking on the side. The triangle
number should always be entered on the matrix
order form. Always copy the marking exactly, for
example 8∆34. Do not choose a matrix at random
or take one from a pi tray to obtain the triangle
marking. Select a lower case "n" from the font for
which matrices are wanted; if figures are ordered,
select a figure 5. The reason for this: reference
characters, quads, leaders, special characters
and fractions in some fonts bear markings
different from the alphabet character.
Accented Characters. The standard accents are
shown on page 17 and on our accent order
blanks. They are available in a large variety of
faces and are priced as indicated on the order
blank. Characters not shown can be made to
order, at a special price which will be quoted on
request. If small cap accents are desired, these
should be ordered on the standard accent order blank.
Always check the order blank in the space
specified to signify whether low, high or small
cap accents are being ordered.
There are two styles of cap accents, low cap and
high cap. Low cap are usually supplied to avoid
the use of a special mold. In the low cap accent,
the character is slightly reduced in height to
make room for the diacritical mark; thus, the
character with its' accent fits the same space
occupied by the normal unaccented cap character.
When low cap accents are not satisfactory, high
cap accents can be furnished. The extra space required in adding the accent to a full height cap
character makes it necessary to change the aligning point of the mold, so that the accent will cast Hush
on the smooth edge of the slug without trimming off. This necessitates casting a given size on a body
two points larger than standard up to 14 point, and approximately four points larger than standard on
display faces.
High cap accents cannot be cast in display faces larger than 30 point, as a full 36 point body is required
for ascending and descending characters. However, where caps only are usedor caps and figures
alonehigh cap accents may be cast in display faces up to 36 point.
In twoletter display faces, 18 and 24 point, only low cap accents are supplied.
In lining faces, only high cap accents are supplied for the largest 6 and 12 point faces. In all other sizes
of lining faces, there is room for the accent above the character without reducing the size of the
character.
Fractions. When ordering fractions, always state whether they are to run in the regular channels of the
magazine or pi. Unless otherwise specified, they will be furnished to run pi.









Key to Matrix Terms
1. Teeth.
Projections on the inside of the
triangular opening at the top of the matrix. There
are seven of these teeth on either side. The teeth
which are left in are called the tooth combination.
As the matrix travels along the distributor bar, it is
supported by corresponding teeth on the bar. At a
predetermined point, the teeth on the bar are cut
away. The matrix, being no longer supported,
drops through the channel entrance and to its
proper place in the magazine. A matrix with all
the teeth in is called a "pi" matrix, and passes all
the combinations on the distributor bar, falling
down the pi chute to the pi stacker.
2. Bar Point Slot.
This is a slot projecting
downward toward the bottom of the matrix. The
object is to make all matrices of the same
thickness at this one point. The slot registers with
the projecting blade on the distributor box bar to
prevent the lifting of two matrices at one time into
the distributing screw.
3. Regular Position.
This denotes the character
in the regular or normal position of a twoletter
matrix. Matrices from 4 to 24 point can be
supplied with two characters. Above 24 point only
one character can be used.
4. Auxiliary Position.
This denotes the character
in the auxiliary or raised position. Characters on
oneletter display matrices, 16 to 60 point, are
also in the auxiliary position.
5. Lugs.
These are sometimes called "ears."
They are made to a certain thickness according
to the magazine channel in which the matrix is to
run. The lugs are the guiding points of the matrix
throughout its travel. The lower lug (on the
character side) determines the horizontal alignment of the character in the matrix, for this lug banks against the aligning
groove in the mold body.
6. Font Slot.
This is a small slot in the bottom of the matrix for use on single distributor machines. In conjunction with the
automatic font distinguisher, it prevents wrong fonts from entering the magazine.
7. Bridge Notch.
A slightly larger opening than the font slot. It is used in conjunction with the matrix bridge on multiple
distributor Linotypes to permit the matrix to distribute to its proper magazine.
8. Bevel Notch.
A notch cut in matrices for Models such as 9, 16 and 17, and used to prevent two matrices from being
lifted at one time into the distributor screws.
9. Clearance Cut.
This is a feature of Linotype matrices. It protects the side walls of matrices as they are assembled.
10. Triangle Number.
The triangle is the trademark of the Mergenthaler Linotype Company. The number before the
triangle indicates the point size of the matrix. The number after the triangle indicates the name of the matrix face. The
entire marking should always be given when ordering matrices.
11. Reference Marking.
These are characters punched in the reference side of the matrix to enable the operator to read
the line of matrices as they are assembled.
12. Face Lines.
These are lines cut in the bottom of twoletter matrices (and on the reference side of display matrices)
to identify the font. When matrices of a twoletter font are stacked in a sorts tray, the various lines match up and tell at a
glance whether a wrong font matrix is present, With display faces, wrong font matmatrices can be detected in the sorts
tray or the assembling elevator, since the face lines are on the reference side of the matrix.
13. Bevel Cut.
An angle cut used on larger matrices to permit proper distribution.


Alignment of Linotype Characters


Linonotype matrix
characters are punched on three different alignments
as shown in the illustration. These are called regular
alignment, auxiliary alignment and high alignment.
The matrices shown in the illustration are from left to right, 4 to 14 point twoletter, 18 to 36 point oneletter, 48 to 60 point oneletter, 18 point twoletter and 24 point twoletter. When casting from the type characters of
these matrices, using the appropriate mold, the operator moves the correct alignment flap of the first elevator
slide filling piece on the vise cap into position this correctly locates the character with respect to the opening
in the mold when the slug is cast.
Note that when casting from the regular position characters, the first elevator slide filling piece (flap) is not
used (no flap). When casting from the auxiliary position of 4 to 14 point twoletter matrices and 18 to 36 point
oneletter matrices, one flap is used to correctly align the characters with the mold opening. The auxiliary
position characters of 4 to 14 point matrices can also be assembled on the duplex rail in the assembling
elevator instead of using "one flap", to obtain the correct alignment. When characters in high alignment
position are cast (48 to 60 point and auxiliary position characters of 18 and 24 point twoletter matrices), two
flaps are used to correctly align the characters.


Relation of Matrices to Molds – Hot Metal Linecasting Machines







The character shown in Diagram No. 3 may be either a
regular advertising figure or a character from the
regular position of a twoletter display face.
Attention is called to the fact that the distance from the
lower lug of the matrix to the constant edge of mold
("A", Diagram 1) represents the regular alignment
position. All characters line up at the top of the slug,
which is represented in the diagram by the constant
edge of the mold ("A").
Diagrams 2, 4 and 5 show the auxiliary position
character as it contacts the mold. These may be
characters in the auxiliary position of 4 to 14 point two
letter matrices, oneletter display matrices, or special
advertising figures. The correct molds, of course, must
be used. Note that the auxiliary position character of 
display matrices cannot be cast on this type of mold.
The distance between the regular aligning rail ("D",
Diagram 1) and the auxiliary aligning rail ("B", Diagram 1
) is .21875, and this is the thickness of the regular first
elevator slide filling piece when one flap is used. When
this flap is in position, the lugs of the matrices are
pulled up against the auxiliary aligning rail "B" and the
character is correctly positioned on the slug.




Referring to Diagram No. 6, notice that the body section
of the mold marked "C" is not as wide as the same
section on all other molds and is the same as the 45
point mold. Since the auxiliary character of twoletter
display faces is located closer to the lug of the matrix to
provide room for a full size 24 point character without
distortion, it will not cast on any mold except the two
letter mold. Although the auxiliary character of a two
letter display face is in the same relative position on
the matrix as a 48, 54 or 60 point character, it cannot be
cast on a 45 point mold, as metal would flow into both
regular and auxiliary characters.
It should be noted that while the regular and auxiliary
position characters of 4 to 14 point twoletter matrices
can be mixed in the same line, the regular and auxiliary
(high alignment) position characters of 18 and 24 point
twoletter display matrices cannot be mixed in the same
line and each face must be cast separately.
As the high alignment position of the auxiliary character
of the twoletter display matrix is the same as that of 48,
54 and 60 point faces, the same first elevator slide filling
piece (two flaps) is used for both conditions. When the
auxiliary position of 414 point twoletter and 1842 point
oneletter faces is to be cast, one flap is used. When
casting from the auxiliary (high alignment) position of 18
and 24 point twoletter and 4860 point oneletter faces,
two flaps are used.






Prior to about 1886, each type founder was a law unto himself in the matter of type standards. Brevier,
for example, made by one foundry would not justify with
Brevier from another foundry.
The pica "em" in use up to that
time had been obtained by dividing an inch into six parts,
equaling, decimally, .166". When
the present point system of the American Type Founders'
Association was decided upon in 1886, the fraction was eliminated
and standard "pica" em adopted,
measuring .166. This standard of measurement is used by the
Mergenthaler Linotype Company, and onetwelfth of the pica, .166,
equals one point, .01383. One
quarter of a point is the unit used
in the manufacture of our matrices on the pointset system.
Didot System. The Didot point measures .01483 of an inch.
The Didot unit is the Cicero, which equals 12 corps, or .178 of _ an inch. The American (Linotype) unit is the
pica em, measuring 12 point, or .166 of an inch. The Didot system of measurement is used in France and in most
of the countries of continental Europe, and is commonly known as the French system.
Mediaan System. The Mediaan point measures .01374 of an inch, and the Mediaan em or Cicero .1649 of an inch
. This point system is used in Belgium. Mediaan height to paper is .934.



Bridge Notching
Linotype Mixer Machines with Fixed Bridge
On these
machines, the upper distributor box is fitted with a fixed bridge
which can be changed when necessary. The matrix is lifted into
the distributor screws and rides on the distributor box rails to
the bridge. If the matrix is notched to correspond to the bridge
projections, it will drop over the bridge projections so that the
matrix teeth will not engage the distributor bar teeth. Then,
after crossing the bridge, it falls through a chute to the lower
distributor box which feeds the upper magazine.
If the matrix is supported by any bridge
projections, it will maintain its alignment with the teeth of the
upper distributor bar and be carried to the lower magazine. Thus
any font whose bridge notches do not match the bridge
projections, also any unnotched matrices, will run in the lower
magazine.
On Linotype mixer Models 29, 30, 35 and 36 using the fixed type of bridge, the standard
bridge cutting of matrices consists of one notch between notches 2 to 7 inclusive.
However, notches of double width, such as 34 or 45, etc., will be supplied if
specifically ordered. For Models 25 and 26, matrices usually carry three notches to
match bridges. However, matrices for Models 25 and 26 can also be supplied with one
or two notches to match a bridge having one or two projections.
When matrices are bridge notched for Linotype mixer machines having a fixed bridge,
only the matrices running in the upper main magazine of Models 25 and 26 (with two
distributor boxes), and the first and third main magazines of Models 29, 30, 35 and 36
need be notched. Matrices for the lower magazine of a pair do not require bridge
notches.
Author Note: From experience with ACE Elektron Mixers it is best NOT to use the #1
mixer notch. You want to keep as much “brass” next to the reference side tow of the
matrix. If mat is damaged, you need that material to bend or swedge the toe back into
position.
Matrices for the upper auxiliary magazine of Model 26 (with two distributor boxes), and No. 1 and No. 3 auxiliary
magazines of Models 30 and 36 are cut with notches 2 to 7 inclusive to drop on any bridge which might be used.
Matrices for lower auxiliary magazines of a pair do not require bridge notches.
Models Having a Movable Bridge
The separation of matrices in such Models is controlled by a single bridge projection which is positioned by an
indicator dial. Since only two adjacent magazines can be in operating position at one time, it is merely
necessary to position the single bridge projection to correspond to a notch in the matrices in the upper
position, which does not appear in the matrices in the lower position. The matrices from the upper magazine
will then drop on the bridge and pass to the upper magazine while the matrices from the lower magazine will
ride across the bridge and pass to the lower .magazine.
The location and size of the bridge notches for matrices to run in these models, is the same as for those used
on Models having the fixed bridge. Only one notch is used for separation.
Matrix Bridges
When ordering the fixed type of matrix bridge, specify the model and serial number of the Linotype mixer
machine and give the number of the projection required; i.e., matrix bridge for Model 25 No.  with bridge
projections 245, or matrix bridge for Model 35 No.  with bridge notch projection 3.
Matrices used on a Model 9 mixer Linotype must have a bevel notch in addition to bridge notches for
separating ,fonts for the various magazines. The bridge notches are in a different location than those in
matrices for Models 25,26,29,30,35 and 36 .. When ordering bridges for the Model 9, be sure to mention the
model in addition to specifying the bridge projections desired.
Bridge Notch and Font Slot Locations The facsimile diagrams shown may be used as gauges to identify the bridge notch or font slot in matrices which
are to run in the Models 25, 26, 29, 30, 35 and 36. Please note that bridge notches 1 and 8 are only to take care
of outstanding matrices with such notches. The standard bridge notching for Models 25,26, .29, .30, 35 and '36
comprise notches between 2 and 7 inclusive.



The font slot numbers for various point sizes are as follows:
Font Slot Number
Point Sizes
1 .. 5, 11, 22, 34
2 .. 6 1/2, 10, 13, 20, 26, 30, 38, 60
3 .. 4, 7 1/2, 7 3/4, 8, 8 1/2, 16, 27, 32
4 .. 4 3/4, 6 3/4, 7, 11 1/2, 14, 21, 28, 42
5 .. 6, 10 1/2, 12, 24, 48
6 .. 5 1/2, 9, 18, 36, 54



Tooth Combination Chart for 90 Channel Magazine —
Fortunately both Linotype and Intertype agreed upon this scheme!
Intertype Corporation was started about 15
years after the Linotype was up and running. All
Intertype resources were expended in creating
a better linecasting machine and therefore
chose to use the same magazine channels for
their magazines that held the matrixes. By that
time Linotype Company had a large library of cut matrixes
The font identification was on the side of the
matrix.
see above  item #10 Key to Matrix Terms
The Linotype Company used a triangle between the font size and number that denoted
the different fonts.
The Intertype Company used 3 dots between
the font size and font number. The three dots
were displayed in a format of a triangle. Just
didn’t have the triangle lines because
Mergenthaler Linotype had a patent on the triangle.
The most popular page in the book when
Cuneo Press got ACE Elektron Mixing Machines.
Note smudges of thumb and finger print marks
on the page at left.
We got the camera department to create a 12” x
16” picture of this page which we framed and
hung on the wall by the combination cutting,
ear and toe trimming machine.
We cut special combinations on new matrices
that were ordered as “pi” characters. (All 7 teeth on the matrix)
Linotype Midwest Supply depot, 531 Plymouth Court, Chicago, Illinois  Earl Porter was in charge of the matrix
dept. When we got the ACE Mixer Elektron machines he suggested that we look into the purchase of the below
described machine. It made the process of getting the right matrices to run into the right channels a smooth
transition. The Linotype Company had never seen special magazine layouts as complex as what we designed at
Wisconsin Cuneo. They felt their company created a monster that might haunt them for the rest of their
existence.
Cuneo comment: “we were using capabilities of the machine designed and sold to Cuneo.
Mergenthaler’s Chicago Office wasn’t equipped to cut the amount of matrices that Wis. Cuneo Press ordered.
We took Earl’s advise in the purchase of a matrix cutting machine. We test cut one “mat”. Ears, toes,
combination. If it fell in correct channel – voila. http://www.gochipmunk.com/html/linoiv.html link to matrix cutting machine.
We eliminated possibility of combinations, ear and toe alignment cutting errors. We actually align (place) the ear
and toe to a specific position on edge or center of matrices. Some larger mats were very close together when
resting in their respective magazine channels. At this time, 196768 era. a pi character would cost Wis. Cuneo
anywhere from $.50 cents to $1.35. The pi magazine contained 6 matrices in each channel.. A magazine with pi
characters cost between $400.00 to $500.00  not including the cost of the magazine. At the time, Helvetica, was
most popular typeface.
Note: Did anyone
in the business have a machine that
cut ears, toes and teeth
combinations? I believe it was made
in Switzerland and sold for about
$375.00 in the U.S. The base, about 1
foot square, contained it’s own drive
motor. Any pictures or info? Let me
know. It was like a key cutting
machine. Clamp a matrix (that had a
cut combination) in one side and
matrix to be cut to run in a channel
(pi combination present) in the other
clamp.
Don’t remember the name of Company. It was painted blue. jer. jermerrill@sbcglobal.net
Second Note . . . . . . . . September
26, 2006 — Attended the Linotype
University IV, Denmark, Ia. Found one
in the Working VanderCook Museum
on campus. Click link: Linotype University  Denmark, Ia.


Pock Marks on NEW Helvetica Matrices  1966 — Ever hear of it? — Read on.
Wisconsin
Cuneo Press purchased many
combinations of Helvetica type and
magazines that year. About the third
day using some of these new type
faces the machinist department was
hearing
rumbles from the other end of the building. (3 blocks long  from the repro dept.)
“You guys over there are
sending us cold (pitted) type faces.
Something wrong with the heat on
those machines?”(That was usually the
cause of a “cold type face.”)
Three of us machinists started
tracking this down. ( When I was
hired in 1964 we instituted using
galley slugs that denoted what Model
29  TTS machine # the type was from
and what manual machine # corrected
galleys)
Didn’t seem to have
any problems with telephone directory
type that came from the TTS machines.
We’d run that stuff 3 hours every
afternoon from 5  8 p.m. for daily
phone directory addenda updates
throughout the state of Wisconsin.
(Green Bay, Appleton, Milwaukee and
Madison) Bell Gothic which was a
sansseriff face. No problem with the
face on those slugs.
A day later we’re now zeroing in on Helvetica type faces.
The pock marks didn’t show up
on galley proofs for the proof room
reading. However when the type got to
the repro press dept. it showed up.
Herb Ramstack, 2nd shift
foreman, got the idea of taking a
linen tester, (reticle used for
checking screen dots) and started
looking down into the punched
character face of the mat. Guess what
he found?
After the mat was
factory punched it was sent to the
milling dept. to complete the cutting
of teeth, ears, toes and any
notching. It was discovered back in
Brooklyn N.Y. that some of the little
shavings or chips of brass, while
still hot, had fallen into the
punched character and sorta welded
themselves into the face of the
character.
Mergenthaler
claimed it was caused by a plugged
vacuum hose on one of their milling
machines. They replaced all 14 fonts
Wis. Cuneo had purchased. And also
paid 3 of us machinists to come in on
Saturday and Sunday to contrast the
new matrices before they were put
inservice.
You could take a
sewing pin needle and flick them off,
however, it still left a little mark
on the face of the character.
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