A Print Devil can be any age


Was 9 year old kid who knew nothin’ about printing.
Walked down a dirt road, stopped at print shop,
sat on doorstep – ‘n watched.
‘Bout ‘hour went by — i asked this guy wearin’ a
‘sorta’ funny lookin’ thing on his head with no top,
had a green visor hangin’ over his eyes. “like those card
dealers in `Vegas wear.”


Need help sweepin’ floors or somthin’?
A
nswer comes back.
Maybe.
“ `mon in. Grab a sody water – ice cooler over there.
We’ll talk about it.”

Another worker saw me . . . walked over . . .
asked — “don’t ua’ work for Mayor Phil at milk barn?”
Yup. just got done sweepin’ alleys (area behind cows when milked).

Guy with “funny hat” asked sum questions.

Hows ur’ spelling?
We do 10 new words a day.

Get ‘em all correct?
 Nope.

Any hunderds?
Yup. One, maybe two.

Someone tole’ me ua’ wash them there glass bottles on
that steam spittin’ spinning brush?
Yup. ‘bout 20 cases (240 bottles) each day   [Quart - Pint - 1/2 Pint]

Why ua’ wanna’ work here?
Washin’ bottles, feedin’ cows and collecting eggs - 1 year - tired of that.
Had fun riding Peanuts [pony] rounding up cows - 5 p.m. milking.
dog Shep came with every day.
Cows saw us – started moving to barn.

Does Farmer Phil know ur’ tired of doin’ this?
Yup. He tole’ me to stop by here.

OK. ‘comon. I’ll show ua’ where the broom is –
OK. ‘comon. and don’t get near those printin’ machines.
OK. ‘comon. They sometimes get hungry when ‘ua walk by ‘em.
OK. ‘comon.
Sorta’ reach out n’ grab a shirt sleeve. They ain’t fussy.
OK. ‘comon. Like to chew fingers off!

•    •    •    • and life went on . . . at the print shop . . . ‘till we moved
                                              
down Menominee river, 60 miles, Marinette, Wi., where
                                               dad obtained new employ.

Pony I rode, Peanuts, herded cows to barn for milking time.
Below: Shetland Pony looks like Peanuts.
Shedding “winter coat.”


Printers don’t talk everyday words like normal 9 year olds speak

No S-I-R   R E E E E E E E E . . .
I talked farm
words like hay bales, corn cobs, oats, glass milk bottles, halters, reins, tugs, double tree, hitch pin, clevis, horse shoes, ice corks, milk pails, saddle, cinch ring, milk crates along with a spinning brush that spit [200°±] steam inside of bottle.

Printers used words like picas, points, didots, cicero, line rule, leads, coppers, brasses, mutt, nut & thin spaces, slugs, hell box, type notch,  reglets, quoins, leaders, galleys, gutters, turtles, quoin key, space bands, vice jaws, hot metal, matrices, distributor box, metal pot, 1st elevator, 2nd elevator, clutch leathers, quadders, distributor box, mixers and on and on.

I was telling mother about all these words and mentioned the word “hell box” which caused her, while pealing potatoes, to turn around and point a knife at me and exclaim “their ain’t no such thing as a hell box!” You better get back to milk bottles, oats and that pony.

 Next day my dad stopped at this print shop and did in fact find out there was a hell box.”

 [U never threw a broken part or bent matrix away. Those things went into the hell box. Never know when u’ might need a bent or broken part to get a print press or hot metal linecasting machine or press running again.]

For a kid who knew “gee” and “haa” to get horses to turn left or right and how horse apples got from stalls to the pile in the farm yard, this Print Devil thing was a whole new world!

. . . from Print Devil to ? ? ?

First exposure to graphics and printing was hand setting newspaper headlines for a
North Eastern Wisconsin Newspaper. It was different than sweepin’.
 
This time I got to assemble “type characters” onto a galley that became column heading in the newspaper. The next day I got to distribute those letters back into the wood box (california job case) so they could be used another time. I’m still called a "printer's devil", just doing different stuff.

 

What are Leads & Slugs?
All Foundry Type had a NICK on the front edge of each character.
After setting the first line and before inserting any lead (space between lines) the compositor would make a quick check to see that all characters in the line were set correctly. If one character showed up with no nick - it’s time to turn the character around so the nick shows before inserting a “lead” space  strip of lead material – thickness of 1, 2, 3 points thick which are precut in many different lengths.
Also used for spacing between lines of type are “slugs” – that are cast in long strips then precut to lengths desired for line spacing. Thickness = 6, 12, 18 & 24 pt. thick.

‘bout this time, 1948, let’s see . . . I delivered milk bottles from a horse drawn cart to customers door steps, raised “squab” for sale, sold fresh eggs from my two chickens, learned how to swim in Menominee River (Michigan/Wisconsin border), delivered 98 papers to homes - tossin’ ‘em from my bicycle, made ice cream at a dairy, worked as helper in a Mobil Gas- 2 bay - Station, learned a lot of mechanical stuff about cars, worked at Radio WMAM, Marinette, wi., helped with installation of WMBV -TV, ch. 11, Marinette, Wi. (now in Green Bay, next to Lambeau Field. FOX broadcasting owns station.) and all of a sudden it was 1955. Out the High School door in June and onto one of those iron boats that picked up iron ore in Duluth, Mn. and hauled it to Inland Steel, Indiana. Then back to Duluth for another load. July, Aug. & Sept. E’nuf of that. Back to the Mobil station. . . then into U. S. Navy – Nov. of ‘55. Some of my Navy days consisted of building another TV station on Adak, Alaska, operating a garbage barge for U.S. Navy, converting a Navy Picket boat into a sport fishing boat for Navy dependents in San Diego.

Winnecone Wi. newspaper/print shop, after U.S. Navy, was next stop . . .
other activities will be filled in — later. . . . much later.

‘Bout 1960 I got back to basics of printing at Milwaukee Vocational School.
Linotypes, Intertypes, Ludlows and more.

 

What’s a point?
What’s set width?
What’s % of ink color reduction?

 

United States uses a measurement system based on inches, feet, yards etc.
For typesetting, 72 points = 1 inch. 1 point = .01387 thousandths of 1 inch
rounded up to .014 thousandths of 1 inch.

Aril & Arial Narrow typeface used in examples below.

 6 pt. type = ..084 thousandths of an inch.

 

 

 

 

 

 

 

 

 

Sample left is 6 pt. type = .084 thousandths of an inch. It’s used in advertisements, usually at the bottom, items that advertisers are required by law to reveal/publish BUT don’t want you to read nor understand. Also used in legal forms requiring signatures and Credit Card Co. rules about the use/payments etc. that You agree to before using the service.
Technology for type composition using computers, 1973 era. allowed composition of text to “squeeze” the set width of characters - by selecting a “Narrow” typeface.

Around 2009, technology offered commands to auto-squeeze
any type face to desired width. Some states have a minimum point size for classified and legal documents type, however, no state has established a minimum set width that this author is aware of.

“squeeze” the set width of characters.
to make sure –
     /\    /\   /\   /\     /\    /\
you can’t read certain type – 100 % black ink – 60 % = 40 % for black.
If still readable – reduce it another 10% or 20%.


 

 

 

 

 

 

 

 

 

 

 

 

Below line = 7 pt. Arial typeface.
Example of how things work in publishing world - legal forms, magazines and newspapers.
Example of how things work in publishing world - legal forms, magazines and newspapers.

Example - ^ above = 7 pt. Arial Narrow typeface. Publishers (2001) also have another tool
@ their fingertips. The ability to “squeeze” spaces between words.
Most difficult to read where one word stops and the next starts. No - I don’t have that
feature on my internet page.

=================

8 pt. type = .112 thousandths of an inch.

10 pt. type = .140 thousandths of an inch.

12 pt. type = .168 thousandths of an inch.

14 pt. type = .196 thousandths of an inch.

 

Composing (composition) Stick

Above is Capital Letter “B” Foundry type — See “NICK” on character.

Composition “stick” was designed for persons – “right handers” - therefore held composing stick in left hand. Usually held in left hand allowing right hand to pick type characters from the type drawer (down page) one character at a time. I’ve seen a good typesetter pick two or three characters at a time. Note: in between the word “Art and” is a space, then after the word “and” a word space is being held with the left thumb. Possibly this line will get blank spaces inserted to fill out to upper edge (above thumb) top end of composing stick. Typesetter will then choose a “lead” or “slug” of desired thickness and length and inserts next to the type and spaces. The next line will start next to the adjustable measure guide. (under the Cap letter “A”

Adjustable line length clamp is adjustable to desired length of line required.
Lifting a lever allows movement to longer measure, then re clamping lever down again.
 

 

Adjustable Composing Stick

This shows how adjustable guide is operated plus “hand stick” is held.
Note spaces between each word plus a “lead” between the bottom of top line and second
line (typesetter’s thumb). This process continues until “stick” is full. Type will be
transferred onto metal galley tray – typesetter will continue with more typesetting
from type case below. With completion of typesetting accomplished a proof of type
in galley will be created on proof press. (down page) Proof read for errors. Correction
performed right on galley and then type can be placed into square iron frame known
as a “chase” – type will be held in “chase” by block of wood “furniture” then “quoins”
inserted between the furniture and “chase” frame - “keys” will be expanded with
“quoin key” –  then chase placed onto platen press.

I’ve written and printed left handed since 193?. Been intimidated by – countless teachers who wanted to tie my left hand behind my back – and concentrate using my right hand – however when I started typesetting and there were no composing sticks [below] for left handed typesetting persons . . . it took but a mere two minutes to retrain my thinking about holding the “stick” in left hand and doin’ type pickin’ with right hand. Wasn’t gonna’ walk away from this learning experience. Nooo Si r r r Reee.
To this day I use either hand to complete tasks. Whichever is most handy.

Composition stick held in left hand required
right hand to pick characters from “job case”. [see white drawer below]

Each letter in the headline was an individual character molded from lead, more commonly known as foundry type. The process was called "hand stickin’ type." You set the characters of foundry type, side by side, upside down for the headline in a long metal tray referred to as a stick or type galley. (metal tray made of heavy steel with 1//4” sides on 3 sides – leaving the end of the tray open so type could be slid off of galley tray into a form. If the line of characters were too long for the space intended in the newspaper you would distribute those characters back into the type drawer and go to the next smaller size type face and reset the line again.

After a couple days of this, you got to know which type would fit into a given space.

The makeup person would determine the length of line and typeface that should fit. He would place a white chalk mark on the metal galley where the line should end.

The foundry type (above) came in many different sizes – from 5 pt. (like classifieds ads in newspapers) to 148 pt (like 2” high headlines in newspapers.)

The average size of text in news stories appearing in a newspaper is 8 pt type – 8 pt type.


               §     §    §      §     §     §    §      §     §     §

The next lesson to learn is were all these characters were stored in the below drawer. Capital letters were easy BUT lower case, ligatures, punctuation were a total mess.
(see California Job Case below:)

I never got a real explanation on why they were all mixed up.
I did find out that the “e”, being the most used vowel, required a larger space for storage.

California Job Case      Type drawer(below) has 89 separate spaces for storage of characters
                                           Some spaces for lower case letters were larger — used more often in
                                           composition.
                                           Larger type sizes were divided into two drawers — with larger spaces.


When selecting a drawer of type, you always pulled the drawer directly below your selected type drawer 1/2 way out. Then if you had to get to numbers in the top row of your type drawer and pulled the drawer out too far – it would fall to the next drawer – not all the way to the floor,  creating one “hell  of a mess” – which was called “pied type.” Those who pied a drawer got the [mandatory] opportunity to clean (redistribute) the characters to the correct square storage area within the drawer
On Their OWN Time! [after school hours]

Type (fonts) characters were stored in large drawers called California Job cases. These drawers were 32" wide x 17" deep x 1.5" high which were divided into many different size spaces. Larger spaces for vowels and spacing materials. Smaller spaces for consonants, numbers, ligatures, punctuation and special characters. Most drawers of type had 89 separate spaces. The larger type was divided between 2 drawers. Caps in one drawer and lower case, the other. You would stick all caps required for the headline, close that drawer and select all lower-case to complete the headline. As many as 60 drawers were in a type cabinet.

Above the 2 columns of type drawers are vertical stacks of 1 and 2 pt. leads use as space between lines of hand set type. Many different lengths - from 6 to 24 picas. Above them, the angle storage squares held different brass spaces used for spacing between characters within the words - to justify the lines of type in a composing stick when required



This print devil had to stand on a stack of three CoCa-Cola cases to reach the top 4 drawers.
(That's when a short bottle of Coke cost 5¢.

The cooler for the Coke was a large square tin box w/ folding covers.
¼ chunk of ice was delivered, via horse drawn wagon,
every other day for 10¢.
(Print Devil got elected to empty pail of water from cooler every 2 days)















“Hand set” type is composed up-side-down on a type galley. (picture right)

Place the galley onto a proof press, roll  ink on face of characters with brayer (roller), place sheet of paper on type then move (large roller) impression roller across paper.

Large roller in Proof Press picture (below)
Type will read correctly – (upper half of picture - right) > > >




Proof press (left) was invented around 1810

Type shops in the country  used them until photo composition
arrived in the 1960’s

Present day hot metal type shops still use them

(believe it or not– hot metal typesetting is alive and well)

The trade is taught at


Linotype University
located in Denmark, Ia.


 
               §     §    §      §     §     §    §      §     §     §

What the hell is a “HELL BOX” ?

The Hell Box keeps track of lost type and broken parts.

Never know what you’ll find in there!



             §     §    §      §     §     §    §      §     §     §


Cold Beer Here!
Another print devil daily duties was take two empty pails to the corner pub,
(Ye' Olde’ Oak Tavern on square – Marinette, WI.) and have them filled with beer.
A ritual performed each day when the newspaper was "put to bed." (Placed onto the press)


All comp room personnel would locate their mug, gather around this huge flat stone table (below)
where pages were "made up" (imposed/assembled) and partake in “swilling” of beer.

The barkeep traded 2 pails of beer for 2 FREE newspapers —
compliments of the newspaper publisher.



Printers, Typesetters, Proof Readers etc. that were waitin’ for the
Print Devil to return from Ye’ Olde’ Oak Tavern.
The “makeup” flat stone tables are in foreground











1875 Hand Cranked Flat Bed Press









Tramp Printer — Ever hear of them?
How about Drifters?

Read on to learn more

Tramp Printers would traverse the country  from East to West Coast and North to South, depending on where the best weather was. One could show up at any newspaper or commercial type shop and request work. It was difficult to find good people who could hand stick type and be a good speller. They were never turned away. Always showed up with no money. Most of the shops had a Chapel Chairman. Like a Union steward today. The worker would converse with the Chair who in turn went to the owner or publisher and cut a deal for the Drifter to work. If the pub/owner refused, then another permanent worker would take a day off and have this worker take his place. The problem with a permanent worker taking a day off, he would visit the other shops in the area and possibly take employ at a different location. Then when the Tramp left town – his former employer would be short of GOOD help. People who could hand stick type were always in demand. Owners would hire a housewife before a male. Women had smaller fingers and could hand stick type faster than most males. However in those days the rules were different for women. If they had children, they stayed at home tending to them.
The tramp drifter wouldn’t stay for long. Maybe a week or so.
The local saloon always had food for them and a place to sleep. The tramp drifters never left town without settling their tabs at the local saloon.
They might be back in 6 months. And be graciously welcomed by the Saloon keepers with
all sleepin’, eatin’, drinkin’ on the house!





Long before Gutenberg's invention entered the scene, Germany was already a center of European book culture.   Books were hand-made by monks in monasteries, who toiled for weeks over a single manuscript and were primarily responsible for copying religious documents.   Illuminated with gold and beautifully illustrated with colorful drawings and designs, these books remain some of the most important medieval cultural artifacts in Germany.


Guttenberg







and one of his assistants



















page still under construction

Forward to 1955 —

This print devil joined the U.S. Navy. Started as a Seaman Apprentice (same as printers devil — do the crappy work) and was whisked away to Adak, Alaska to operate a TV station for the entertainment of troops. (the devil worked at WLUK-TV 11 Marinette, WI. while in high school) Air Force, Marines and Navy plus some dependents were stationed there.. Television, small 12" screens that produce black/white pictures on a glass tube along with speakers that blurt out sound and have more snow on the screen than picture.

Adak is so far out of touch with the real world that map makers created a westward jog in the International Date Line so the last island on the Aleutian Chain, Attu, would be included within the continent of North America. Adak Island is 5 or 6 from the end of the chain.

Wow...
October 2010. Still workin’ with items to place on this page.

Haven’t forgot.

e-mail
batmanpete@gmail.com




 

Linotype Company Hot Metal Thermex Mold Disk –
water cooled — 15 lines per minute


Now THERMEX gives you all of these advantages:

 
        • Continuous high-speed slug casting on one mold
           • Faster wide-measure casting of display sizes
           • Cooler operation for solid slugs ... less matrix damage
           • New back knife for perfect type-high
           • Higher mouthpiece temperature aids type face quality




The Thermex is a newly designed water  cooled Linotype mold disk which greatly enhances efficiency and quality in high speed linecasting.


With the Thermex, slugs can be cast continuously on one mold at the fastest matrix assembly rates-even on a tape operated Elektron. The Thermex offers full 4 magazine versatility with a 4 mold disk. No more mold alternation for cooling.


Even with display sizes the potential speed of tape operated composition can now be realized.


The cooler operation of the Thermex helps protect matrices from possible type metal accumulations which could produce damage under vice jaw pressures. The precise adjustment of mold temperature to the requirements of each type of work ensures high typeface quality.


Elektron Introduced in 1964

The Thermex mold disk was developed later – 1966

Production claimed by Mergenthaler for output was  continuous casting on same mold  at 14 lines per minute.

Nobody believe it then,

but it accomplished the feat!

Not for just 5 minutes.

We had many runs for 1 hour or more.


Wisconsin Cuneo Press, Milwaukee, Wi. owned two ACE –  Automatically Controlled Elektrons.

Quite a challenge. Never a dull moment. Mold cooling hoses intertwined with hydraulic hoses which wound thru wires that kept communication going between 100 or more micro switches, leaf contacts, relays, servo motors, electric clutches, pumps and one matrix detector light beam. Mold turning and knife block servos received instructions for settings from a bank of relays located inside a cabinet about the size of a 1940 refrigerator. (55” high x 24” wide x 24” deep) All commands came from TTS punched paper tape via leaf switches located under the Teletypesetter Operating Unit.


— j merrill - head machinist


A SIGNIFICANT ADVANCE IN SLUG CASTING TECHNOLOGY

The widespread use of tape operated Linotypes and the popularity of the new  Auto Controlled Elektron have created a need for increased mold disk heat dissipation, to permit full utilization of the higher matrix assembly rates, In response to the new requirements, Mergenthaler Linotype Company has developed the Thermex mold disk.

But the importance of the Thermex goes beyond its application to tape-operated equipment. Both the efficiency and operational convenience of practically all Linotypes now in use can be greatly improved with the Thermex.

Large display type can be cast continuously on one mold, even at the speed of the new Auto-Controlled Elektron. The slug is always solidified completely before the mold is moved away from the pot mouthpiece; this insures slug homogeneity and maintains the correct shrinkage patterns for which the matrices have been designed. Cooler operation also prevents adhesion of type metal to matrices and spacebands, thereby reducing damage to matrix edges from type metal accumulations. Improved mold temperature uniformity maintains typeface quality.


PERFECT TYPE HIGH UNIFORMITY







In addition to its unmatched slug casting efficiency, the Thermex offers another great composing room bonus -significant reduction of type makeready time.

The allnew "floating" back knife trims the slug flush with the back of the mold, maintaining uniform type-high.

Although maintenance of type-high is not related to heat dissipation, other engineering problems encountered in the development of the Thermex disk led to a study of the mechanical factors responsible for type-high variation.

These factors have now been overcome in the Thermex through a complete redesign of the back knife mounting arrangement.


NEW SPRING LOADED BACK KNIFE

With the Thermex disk, type-high variation is reduced to the vanishing point by trimming the slug flush with the face of the mold. This has been accomplished by springloading the back knife fixture. Solid contact is maintained between the blade and the mold face, with ample pressure to insure precise flush trimming, without danger of abrasion and wear on the mold face.

As the disk revolves from casting to ejection positions, a system of mechanical linkages to a cam on the main drive shaft raises and lowers the knife assembly. The blade is therefore protected from damage, since it is brought into contact with the mold face only when the mold is in the trimming position.

The new spring-loaded back knife eliminates meticulous manual adjustment of knife-blade clearance. In addition, type-high variations requiring correction through time-consuming insertion and manipulation of equalizing shims, are significantly reduced.

CONTROLLED COOLING

Sensitive water-flow control is provided through a precise regulatory system. This system consists of a water flow adjustment screw and gauge, and an automatic valve which prevents excessive cooling by stopping water flow during the ejection cycle. A switch is provided to permit continuous water flow when needed for display point sizes.

Guided by actual equipment performance under the particular environmental conditions prevailing in his plant, the Linotype operator determines the best water flow rate for each kind of work and marks the corresponding float level on the glass tube indicator of the flow gauge. Thus after a brief period of use experience, mold temperature can be accurately set for all types of work.


The start/stop water valve located above controlled the cold water flow thru the top and bottom cooling bars (see below) clamped onto the molds. When the ACE Elektron received a stop code (a micro switch didn’t get activated at proper time) due to a machine malfunction, the timer and memory system would issue a stop command to the main drive clutch brake, the water flow valve, and issue hold to the stop magnets on the TTS (Teletypesetter Operating Unit) which would stop selecting anymore matrices or mats for assembly,
 jer

RECIRCULATING WATER COOLING UNIT




Where water supply is limited, the Thermex disk may be operated with a re-circulating water cooling unit.

Moreover, this arrangement is advantageous in all installations, since it offers thermostatically controlled water temperature. It also allows the use of distilled or de-mineralized water to insure trouble-free water circulation.


THERMEX MOLDS

Special molds are required for use with the Thermex Mold Disk.

On a Thermex disk, the upper mold clamp is in the form of a straight, square metal bar instead of the curved shape found in conventional disks. This makes it possible to pass the tubing directly through the clamp, while allowing a tubing configuration inside the disk that will tolerate the necessary radial movement of the clamp. Redesigned molds, with accessory filler bars to reduce tube flexure in clamping molds of varying point sizes are therefore required. The Thermex molds are also specially designed to produce standard .918" type-high slugs in conjunction with the flush trimming back knife. The mold complement for the Thermex disk has been worked out to meet all significant current slug configuration and point size demand as efficiently as possible.
 


The

The Flush Trimming Back Knife!
A ninth wonder of the world!


It actually moved up (by cam/roller lever) to the back of the mold (actually rubbed on the steel mold) as the slug and mold were rotated by the mold disk back to the eject position. At the proper moment when the other end of the mold reached the back knife the cam/roller allowed the back knife to move back, with help from a back knife return spring) to normal resting position on the mold adjusting screw. Adjustment between resting knife edge and back of mold was .010``. The sharp edge had a special angle ground on it. (Sylben Engeering, Braidwood, Illinois) created this feature for Henry Cieko, Area Mgr. for Mergenthaler, 531 Plymouth Ct., Chicago for many years.


There was one flaw. Nobody (including Mergenthaler Linotype) ever tested the system casting 14 lpm for more than 20 minutes. On extended runs the back knife became very warm and a nodule (knobs) and sprew (trim from bottom of slug) would adhere itself to the knife and weld itself to the knife edge. The next time the knife was crammed against the mold this obstruction prevented the knife edge from riding the mold by a thousandth or so inch resulting in type high to vary anywhere from .918” to .920” or whatever.

It required close attention from the machinist to “mike” the slugs every 20 minutes or so and fill in a log sheet showing reading and time. Every 2 hrs. we removed the back knife, (held in place with 1/2” pivot pin) cleaned cutting edge of knife with a brass rule then applied something called “preventive metal adhesion”, @ $15.00 a gallon sold by Mergenthaler. It looked like black liquid graphite.

We also had 2 sets (34 TTS extra thick spacebands each) for both ACE machines, which were swapped out every 2 hours. The bands would become very hot and get metal buildup on the casting edge of the sleeve which then crushed side-walls of matrices.

We would sharpen a piece of brass rule and proceed to remove the metal buildup from the sleeves. Then the contents in the jar of “black gold” would get painted onto the casting edge of the sleeve. And NO. We didn’t get artist pay. (Whatever that was?)

—jer

 


Water Cooler

This unit incorporates a 1/3 horsepower Hermetic Compressor, blower cooled condenser, cast aluminum cooling tank, seven gallon water storage tank and a valve regulated pump which permits adjustment of water discharge pressure to the exact requirements of the slugs being cast.

A thermostatic temperature control maintains optimum water temperature in the storage tank. A single re-circulating water cooling unit can maintain sufficiently low water temperature for good casting quality with a thermal load for four molds in continuous operation. A full complement of safety devices is provided, including a "Klixon" thermal overload protector for the compressor and fan motors, a relief valve to prevent excessive back pressure at the pump when the Linotype flow control valve is shut off and a circuit breaker which cuts off all power if the pump motor is overloaded. An armored hose is supplied with the Thermex disk for tap water installations; inlet and outlet hose-connecting "T" adapters (supplied) will permit the use of standard Mergenthaler hydraulic hose and provide for branch connections to several disks. Dimensions (approx.): 36” wide x 26” high x 12” deep.