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Volume 46, No. 20
Issued Every Thursday
McGraw-Hill Publishing Co., Inc.
NEW YORK, MAY 17, 1917
Price, Ci Cents
Contents,; First Page
Advertising Index, 'last Page

Why they increase your bolt production
Acme Threaders cut more bolts, Acme Dies are more readily changed, Acme
Die Heads wear longer, Acme Machines
stand up to the work.
Out your threads on the Acme Bolt Cutters and get the maximum in
production and the "Acme" in finish and
Acme Single Bolt Cutters cut and thread bolts and tap nuts from 8 in. to 6 in.
in size.
Acme Double Cutters are intended for bolts and nuts from 4 in. to 3 in. in
size—machining two at a time.
Our Catalog contains some unusually interesting facts about bolt
cutting.        Send for a copy.
The Acme Machinery Company, Cleveland, Ohio

Cincinnati Dividing Heads
(see picture above)
FIG. 1

Built in this belief: That a modern,
powerful, universal miller is severely handicapped unless it is
equipped with a Dividing Head that is strong enough to do work
commensurate with the machine's capacity.
All parts of Cincinnati Dividing Heads are unusually large, but every used mechanism will show wear
in time, no matter how large it is for the work it has to do. The important thing is to prevent this
OILCHAMBER        wear from doing too much harm.
FIG. 2
WORM WHEEL        

When the worm and wheel on Cincinnati Dividing Heads begin to wear they can be readjusted by the
screws shown in Fig. 2. It is not. necessary to take the head apart. The adjustment is made in exactly
the same way as when the head is first assembled in our shop, and the adjustment of the worm is
straight into the worm wheel. Their nice alignment is not spoiled by repeated adjustments. Their
original accuracy is thus preserved.
The spindle is locked by the clamp, Fig. 5, which locks it endwise, and preserves the alignment so
necessary for accurate indexing.
The spindle carrier swings on large trunnions (8z-in. diameter on the 12-in, head) and is held at any

May 17, 1917        Buying—AMERICAN MACHINIST—Section        7

_        WI

horizontal, and 50 deg. beyond the perpendicular by clamping members which grip the entire
circumference of the trunnions. This insures rigidity, and also protects the bearings from injury, thus
preserving the alignment of these parts.
These are some of the essential factors that contribute to continued accuracy.
Summing Up-
When you buy Cincinnati Universal Millers, you get Dividing Heads like this:
First of all, each size is big enough to stand up to the service required from the machine. We don't
limit a ten-horsepower Universal Machine by putting on it a five-horsepower Dividing Head.
By making them big, they have a chance to retain their original ;ac- curacy.
And, we do make them -accurate: You'll, find all of this more fully-described in pages 67 to 70 in our
catalog. Shall we send you a copy?
The Cincinnati Milling
Machine Co.
Cincinnati        -        -        Ohio    FIG. 4   FIG. 5
The spindle clamp consists of a split ring, C, that is spread by the wedge B by tightening the screw A,
thus clamping the spindle endwise, securely, . without crowding it out of alignment.
Cone-Driven Universal Miller
The history of the drilling machine.                     
           May 17, 1917
24 to 42-in.
Heavy PULA        Y ° ` Upright Drilling Machine.
In modern language the name of our machines means efficiency.
Cincinnati Upright Drilling Machines are pioneers in the introduction of many valuable
Automatic Trip disengages the feed at
any predetermined depth and guards
against the spindle being advanced beyond its intended range of movement.
The Head is adjusted by a steel rack
and pinion, is provided with convenient        f
means for compensating for wear on the  spindle sleeve, is counterbalanced by
a weight inside the column and is readily         `
Camped wherever it is placed.
4,5 and 6-ft. Regular Plain
- .1 -' Drilling Machine        k "'"
The language spoken in        i&        i!I modern shops is understood by Cincinnati Radial Drilling
Machines when the cry is for_ speed and efficiency. The
machines respond.
The back gear and friction        t        ~' a--^-"" J reversing clutch levers are
both, at bottom of., head        \
where it is conenient for the
operator to lower the speed
of the spindle when making back gear speed changes, relieving the gearing of clash and
damage. The advantageous position of these' levers is much appreciated when arm is used in
a high position.
The automatic trip for spindle is quickly set for drilling to any desired depth. Its graduations
read from zero and is very substantial and positive.
The Cincinnati Bickford Tool Co.
Oakley, Cincinnati        -        -        -        -        Ohio, U. S. A.

pg 10.
Fig. 23.
posed to be worshiping a dual deity represent. ing the upper and lower Nile, combined under a
single Pharaoh, and are always represented in the pose of work people. Ropes are in the
hands of each, and their feet are set to brace themselves in pulling the ropes.
The instrument between these figures appears to be a drill and is spoken of by Egyptologists
as the "Sam" or "S's'm," and at times is
referred to as the altar.

Fig. 24
The "Sam" is conventionalized, especially on
furniture, and is most common on the sides
of chairs. Its conventionalism is carried at times to an extreme point.
Fig. 23, from the base of an ottoman, represents this instrument in its most conventional form.

Fig. 25.
each couple consisting of an Asiatic and a Negro." Such decoration is shown by Fig. 24,
showing bound slaves on the base of an ottoman of Rameses III.
In Fig. 25 we again find the negro and the Asiatic"tied back to back; but in this figure the stake
takes form and becomes the "Sam," as it is called, in the upright column with the. disk at the
top. The ropes tying the slaves pass gracefully over their heads and hang down in front, one
having an end of the lotus and the other of the Popyrus. The brace of this tool starts out from
the center of the drill, near the elbows of the slaves, and enters the ground, one side being
seen between the feet of the African. The figure is accompanied by a memorandum that it is
taken from the tomb of Schampthe (Thebes), under Amemophis III, about the sixteenth century,
B. C. Here, also, we see the peculiar figure at the base of the shaft, which almost invariably
accompanies representations of this figure of the "Sam."

(Remember this was WWl, Before  the Roaring 1920's even Old timers tell me  these were not
bad words at that time.     At that time,,,,, what a change, a good change the USA has had since
then .    Webmaster )

Chapter 19
The Meaning of the "Sam"
or "S's'm" in Egyptology
Represented on the base of the seated colossal        Referring to decorations, Prof. G. Waspero
statues of Egypt, one of which is known as        says: "Elsewhere we find these emblematic
the Vocal Memnon, are representations of the        plants which symbolize the union of upper
so-called Nile gods. These Nile gods assume a        lower Egypt under the rule of a single
certain peculiarity of pose. They are sup-        or kneeling figures tied to a stake in couples,
May 17, 1917—AMERICAN MACHINIST Page 6 and 7.
May 17, 1917—AMERICAN MACHINIST Page 6 and 7.
May 17, 1917—AMERICAN MACHINIST Page 10 and 11.
pg 19
May 17, 1917        'Buying—AMERICAN MACHINIST—
Section         pg 19
Built-to-Order vs. Manufactured
Machine Tools

Newton new engineering dep't before installation        
Newton pattern shop before relocation of
of new furniture        equipment
Mr. Owner,.Buyer, Purchasing Agent, Equipment
Engineer:        Can you vision the extra
forces necessarily maintained by Builders of Special
Equipment, on account of the built-
to-order tools only?
Do you ever stop to consider that built-to-order tools,
as a rule will fit into no other
manufacturer's plan than your own?        That as built-
to-order tools are usually installed
to better and refine existing methods through
combining a multiplicity of operations in
one, and while the benefits from installation are
cumulative, the builder profits but once?
When comparing proposals are your decisions
influenced by price per pound, with
the cost of manufactured standard tools as the basis,
or do you first deduct the cost of
engineering service, which in an efficient organization,
includes experienced and practical
men, who at your request will go to your shop to learn
first hand, the obstacles to be over-
come "known only to yourself and organization"—these
to be reported without loss of
time to a Consulting Board, who formulate plans to be
drawn up for your consideration,
and if an award should be made, the preparation of
tedious detail drawings, the making
of exclusive patterns and the responsibility of the
equipment meeting requirements still
emain before acceptance?
Not the least consideration is that Special Builders of Machine Tools are required to
employ all skilled mechanics—to insure precision and despatch in executing commissions;
hardly any two of which are alike.
Such .work requires thorough experience—NEWTON has that-37 years as Builders
of Special Machine Tools insures to patrons of NEWTON minimum development costs,
as frequently new requirements are easily covered by re-arrangement or new combination
of existing parts.
NEWTON solicits the opportunity to compete for acceptance of designs or proposals
without expense or obligation on your part.
rd. and Vine Streets,        Philadelphia,U.S.A. I
20        Buying—A M E R I C A N M A C H I N I S T—Section        Vol. 46, No. 20

Found !       at the Splitdorf plant four fine P and J jobs.

This is Number. One
The Splitdorf Company has outgrown one plant after another meeting the demand of motorists for Splitdorf Spark Plugs and
Ignition Systems. Their new factory at Newark—and especially the Potter & Johnston section, of some two dozen machines,
offers many interesting production problems.
In this and the following three issues of American Machinist we will describe four examples picked at random but each of
different character which conclusively show the advantage of "doing it automatically."
This one, the generator body of a Splitdorf
two unit system, is of cast iron. There are four operations to perform, rough and finish bore, the window strap on the outside to
be cut and facing of one end. Limits of plus or minus .001 in. are maintained with a production of 75 bodies per day—one man
to three machines. This is not theoretical but actual net production for ten hours' work.
Possibly you have a job similar to •this that could be handled to better advantage on Potter & Johnston Automatics. Send us
blueprints and we'll gladly give you guaranteed time studies.

May 17, 1917        Buying—AMERICAN MACHINIST—Section        pg 21
I' It do''i of
four fine Potter & Johnston job

The list of manufacturers that use Potter &
Johnston Automatics in batteries of over a dozen is inspiring. We'll be glad to put you in touc
with someone in your own neighborhood who has
      such a battery—and can tell you the value of
 "doing it automatically."
  Potter & Johnston            Pawtucket        R. I  , U. S. A.
pg 24        Buying—AMERICAN MACHINIST—Section        Vol. 46, No. 20
SALES OFFICES: 870 Woodward Ave., Detroit-812 Engineers Bldg., Cleveland-1120 Otis Bldg., Chicago

May 17, 1917        Buying—AMERICAN MACHINIST—Section         pg 25
SINGLE-HEAD AUTOMATICS are designed for machining castings, forgings, and second-operation screw machine work.
The universal work-holding, turret is adaptable for holding work in chucks, draw-back collets and arbors. The arrangement
of the tool-carrying spindles opposite the work-holding devices allows all operations to be performed simultaneously. All
operations are automatic, except insertion and removal of work, and the provision of an extra or idle chuck permits even
that to be done while tools are working. All machining operations take place in the intervals marked by the automatic
progression of the turret indexing mechanism, the time necessary to complete a piece being measured by the period
required for the longest single operation on it.
DOUBLE-HEAD AUTOMATICS differ from the Single-Head in having two sets of tool-carrying spindles oppositely facing a
common work-holding turret. This arrangement provides for machining both ends of the work at. one time, the result being
accomplished in one- half the time which would be required if each end were finished separately in a Single-Head
Machine.. In the case of the, Single-Head Machine the turret advances and feeds the work against the revolving tools,
while:, in the Double-Head type the revolving tools advance from both sides and perform their operations on each end, of
the work.
OPERATIONS-End A: Rough and finish turn body and flange, rough and finish bore, face end and flange recess back of
thread, and thread at rate of 45 per hour. End B: Rough and finish bore and thread, at rate of 90 per hour, in Size 23 Single-
Head Machine.

OPERATIONS—Drill, Ream and Tap
Ordinary methods of handling this piece would require two settings and six consecutive operations.
The New Britain" way requires but one setting, all six operations being completed simultaneously.
FOREIGN AGENTS: Coats Machine Tool Co., Ltd., Caxton House, London, Glasgow and Newcastle-on-Tyne
pg  24 New Britain  Automatic Screw Machines FOUR-SPINDLE  AUTOMATICS
T—Section        pg 27
Home the Facts
EXPLICITNESS coupledwith honesty and pounding home the facts—that is what we aim to do ° in our adver-
tising. You cannot afford to ignore us when you contemplate purchasing automatics. If you
do not know us it will pay you to get acquainted. Our range of styles and sizes of machines, suit-able for most any kind of
are well worth looking into and we can name hundreds of things said in praise of our ma- chines in this country that are
most highly prized by us.Our machines are silent messen-gers; they create the bonds of friendship.
Cleveland Automatic Machine Company Cleveland, Ohio
Eastern Representative: J. B. Anderson, 211 Gowan Avenue, Mt. Airy, Philadelphia, Pa. Western Representative: Herbert
E. Nunn, 576 West Washington Street, Chicago, Ill.
pg 26        Buying—AMERICAN MACHINIST—
Section        Vol. 46, No. 20

-in. Turret Full Automatic Machine—
Model G.
14-in. Three Hole Turret Full Automatic M
chine—Model C.

pg 28        Buying—AMERICAN 3IACHINIST—
Section        Vol. 46, No. 20
You buy a lathe for what it
will do—consider the Fox
_...v_~.-.-        In designing and building the
Fox Monitor
Turret Lathe, as with all our other machines,
1 we endeavor to put out a lathe that would
bemost adaptable to the work to be
performed. The Fox is especially intended for
rapid production on general brasswork.
Because of the general satisfaction the Fox
has given wherever used, we •        are
convinced that we have produced the highest
type lathe for this class
-*        of work.        I,
!        The Fox incorporates the friction head,
which is very valuable for the        :.\\
i        class of work handled.
This machine is equipped for a wide range of
production. The chaser
1 attachment may he put aside entirely if
necessary. Taper threads may be chased.
The Turret is regularly equipped with a taper
attachment, so that all possible taper work
may be done with the turret tools.
- -        -        i        The Fox will do all you
require and more. Ask for circular No.
105 with the full description.
The Springfield Machine Tool Co.
Springfield, Ohio
May 17, 1917         surface finish
measurment  Buffing—AMlERICAN
Microphoto of Ball Surface''        Magnified
15 Times
Making a microphoto of a ball for a Hess-
Bright Ball Bearing.

Maintaining Uniform
Surface Finish of the Balls
By the method shown above several from
each lot of balls for Hess-Bright Bearings are
carefully studied. Under the microscope that
surface, which to the naked eye appeared
flawless, will occasionally show up to be
comparatively rough, due to deep grinding
marks or pits.
Such balls would be immediately detected in
the final ball inspection by the Hess-Bright
methods and the entire number of similar
balls rejected.
This microscopic study of the ball surfaces
insures to each Hess-Bright Bearing balls of
the highest polish—balls with that flawless
surface which is absolutely necessary for
smooth running, with almost total absence of
Hess-Bright's Conrad Patents are thoroughly
LInsuring uniform Quality of Every Hess-
Bright ll Bearing  Philadelphia
Note the flip forward threading attachment
PAGE 24 Cleveland Automatic Screw Machine