Foster Machine No. 2 Screw Machine, Plain Head Screw Machine

THE

No.

BAR CAPACITY It',."; TURNING MOVEMENT 7"; SWING 14/,"

2 Screw

Machine

Plain Head

WITH TOOLS AND ATTACHMENTS

F

oster

M

ELKHART, INDIANA, U. S. A.

achine

C

ompany

PRINTED IN U.

S.

A.

f'OSlEHL

THE FOSTER NO. 2 PLAIN HEAD
SCREW MACHINE

The Foster No. 2 Screw Machine is built
in the plain head type only, and is par
ticularly well adapted to a great variety of
bar and small chucking work. The sim
plicity and speed of operation of this ma
chine makes it especially well suited to meet
brass and similar metal working require
ments.

1 his machine is also built on the unit prin
ciple, offering the purchaser the machine

I

design and develop tools for special require
ments when so desired.

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The following pages are given to the
description of the design and construction
of the units individually which build up the
No. 2 Foster Screw Machine.

THE HEAD

The head and bed
sign and cast in a single unit. The spindle
is turned from a steel forging, and supported

are of extra heavy de

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#

NO. 2 PLAIN HEAD SCREW MACHINE WITH AUTOMATIC CHUCK, BAR FEED AND LEVER CUT-OFF

with power or hand feed—the latter, screw
or lever type—to the cross slide, power or
hand feed to the turret slide or with or with
out automatic chuck or bar feed. Any of the
attachments mentioned can be purchased
separately and added to the machines when

desired.

A very complete line of standard tools for
bar and chucking work is carried in stock.
Also we are splendidly equipped with both
engineering and manufacturing facilities, to

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Timken roller bearings which have a rated

in
load capacity far greater than ever required.
Each bearing is caged in a
proof steel sleeve aligned in the head stock
and arranged for the alemite system of

lubrication,
the spindle through
The spindle is driven through a three-step
cone, having extra large diameters and wide

faces, designed to use a three-inch belt,
viding a very powerful drive. With the

2

Full adjustment is effected to

one

one

adjusting collar.

piece dust

pro

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use

i

rOSlEUL,

of a triple friction countershaft, six speeds
forward and a reverse, are obtainable.
specifications of the Foster No. 2 Plain Head
Screw Machine are given on page 6.

THE BED

The bed is of the deep double girder

type cross tied internally with heavy “U”
shaped ribs. The legs are set in from the
ends of the bed to reduce the span between

them and increase the rigidity to the

bed.

cal ribbing.

scraped to master gages and form a very

rigid support to the tool carrying units.

THE AUTOMATIC CHUCK

collet type, employing a separate collet for
each size and shape of bar stock. Operating
mechanism can be supplied for either the
draw-in or push-out type collet.

transmitting power through a link and
wedge acting directly on the closing mechan
ism. The extreme closing movement is
effected through the principle of toggle ac
tion, giving an extraordinary gripping power
to the collet. Extremely short overhang of
the spindle provides maximum rigidity to
the collet in supporting the stock.

Additional strength is added by verti-

The ways are of extra large proportion,

The automatic chuck is of the spring

The operation is through a hand lever

Full

the bar than is usually found in machines of
this type.

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An exceptional rigid stock support is pro

vided in connection with the bar feed.

THE

LEVER CUT-OFF

The lever cut-off is furnished as a standard
unit with the plain head machine. It is of
the rack and pinion design, and equipped
with adjustable stops and two tool posts.
A taper gib is provided for adjustment to

the slide.

HAND SCREW CUT-OFF

This style of cut-off can be furnished
when desired with the No. 2 Plain Head Ma
chine. The cut-off slide is of ample length
to allow all necessary clearance between the
front and rear tools for the passage of the
turret tools and for an increased capacity

automatic chuck hood.
screw is equipped with a graduated dial of

large diameter on which observation stops
are mounted for the accurate duplication of
diameters. Positive stops on the side of the
slide are provided for the gauging of the

depth of cuts. Adjustment to the slide is

provided through a taper gib.

THE POWER FEED CUT-OFF

The power feed cut-off unit can be sup
plied when desirable with the No. 2 Machine.
Three feed changes—reversible—are obtain-

The cross feed

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THE BAR FEED

The bar feed is operated by the same lever

as the automatic chuck and utilizes the
continued movement of same for feeding
the bar forward. It is quick in action and
provides for a longer forward movement of

CROSS SLIDE APRON

3

EOSIEI^

able in the apron,
box at the head end of the machine doubles

this number, making six feeds available to
the cross slide. The power feed is engaged
by a cam lever on the front of the apron,
operating a cone friction clutch. Adjust
ment of the clutch can be easily made from
outside the apron. All gears are of steel
run in oil.

Power feed aprons cannot be attached to
hand screw feed cut-off units and must be
ordered with machine.

THE HAND LONGITUDINAL FEED

The Hand Longitudinal Feed for the cross
slide carriage is located centrally between
the ways of the bed. This eliminates entire
ly the tendency of cramping action occuring
when the longitudinal
cated on the front side of the bed. The hand
wheel, mounted on the bed carries a large
diameter graduated dial equipped with ob
servation stops.

A shift gear in the gear

feed screw is lo

mechanism, at the extreme rearward move
ment of the slide when rotating the turret.

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The saddle rests on a taper base which
provides height adjustment to the turret and
a taper gib on each side of the slide provides
the cross adjustment for taking up wear.

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THE TURRET SLIDE AND SADDLE

The turret slide is liberally proportioned
throughout with all bearing surfaces chilled.
Six independent stops timed with the work
ing positions of the turret automatically
knock out the power feeds at any predeter

mined point. A positive stop is provided
for absorbing the shock, from the indexing

TURRET SLIDE AND SADDLE

THE TURRET

The turret is of the solid hexagon type,
automatically indexed by the backward
movement of the slide. The turret revolves
on chilled surfaces, and is held centrally by
a hardened and ground steel center stud with
a portion of its length tapered and around
which fits a hardened and ground steel

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sleeve pressed into the turret. Provision is
made for adjusting these tapers very closely.

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Alignment of the indexed position of the

turret faces is rigidly held in place by a lock

4

FOS/EfE

bolt which also forms a taper fit in a hard
ened bushing pressed in the turret.

The turret is clamped through the action
of a hand binder and washer. The washer
is of large diameter and clamps over a large
suiface, effecting very rigid support to the
turret.

Six independent adjustable screw stops,
mounted in a spool carried in the rear of the
turret slide, index automatically with the
turret. They are timed so that the slide

may be stopped at pre-determined points for
each working face of the turret. Provision
is made for using flanged or shank tools with
the turret.

THE

SADDLE APRON AND POWER

FEED TO TURRET SLIDE

1 he power feed to the turret slide has

six feed changes in geometrical progression.

die. These are doubled by a sliding gear in

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the gear box on the head end of machine.

THE OIL PUMP AND PIPING

The pump is located closely to the supply
of cutting lubricant, keeping the lift as low
as possible. The lubricant is carried from the
well in the pan to the tool carrying units
through pipe lines and a flexible tube. The
swing joints are taper self-seating type, and
cannot be sprung apart causing leakage dur
ing manipulation.

THE COUNTERSHAFT

The Countershaft regularly supplied with

the No. 2 Plain Head Machine is of the

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SADDLE APRON

Three of these changes are obtained in the
apron mounted on the front side of the sad-

COUNTERSHAFT

double friction type equipped with heavy
duty multiple disc clutches and ball bearing
pulleys. When desirable a triple friction

countershaft can be furnished at a small ad
ditional cost. Foster Countershafts are prac
tically trouble proof and are built to last in
definitely.

5

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FOUNDATION PLAN, NO. 2 PLAIN HEAD SCREW MACHINE

3*- 95 n

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Specifications

NO. 2 PLAIN HEAD SCREW MACHINE

Swing

Automatic

Chuck
Capacity

Head

Countershaft Speed for iron and steel

Bed

Lever
Cut-off
Turret

Over bed .........................

Over carriage guides

Over cut-off slide ......

Round bar ..

Square bar .

Hexagon bar

Hole through spindle
Thread on spindle nose 2T3" diam. 8 pitch
Diameters of 3-step cone 5/z"

Width of belt

Spindle speeds

Timken Bearings on spindle.

For pulley sizes see

Width across ways .....................

Length of ways ............................

Total cross travel ...............

Total longitudinal travel ..........

Diameter of turret across flats
Size of tapped holes in faces of turret.
Dist. between centers of tapped
holes.
No. of tapped holes in faces of turrets — 4

Size of tool holes in turret ........................

Center of turret hole to top of turret

slide ...............................................................

Effective turning movement of turret

slide ..............................................................

184. 300. 500 R. P. M.

drawing

above.

14 \/i"

13"

6>/8"
. 1

h"

3

4"

7

/e"

1A"

. 7)

//'

, 9 J/7

250 R. P. M.

7Va"

36"

5/2"

7 3/4"

...i'c"

3/b" x 2"

1/4

2/2

Maximum distance between end of
spindle and face of turret
Power feeds to turret

"

3"

6"

"

1"

6

Space Floor space without wire feed.

Floor

Weights

Regular
Equipment

Code words Plain Head Screw Machine

approximately ...........................

Floor space with wire feed,

approximately ...........................

Net weight machine .............

Weight crated for shipment about

Weight boxed for export about ..........

Dimensions of box. .6' 9" x 2' I I" x A/i
Cubic measurement boxed, approximately
(Cubic Feet)

The regular equipment furnished with the
standard machine is the lever cut-off. hand
longitudinal feed to carriage, hand turn-
style feed to turret, oil pump, piping, pan
and double friction countershaft.
The automatic chuck and bar feed are not
included with the standard equipment.

P. H. Screw Machine with automatic

chuck

P. H. Screw Machine with automatic
chuck and bar feed
These code words do not include power
feeds.

Cut-off power feed .............

Power feed to turret -

010, 0155. 024. 038

1 7"

0041. 0064.

2' 6" x 5' 6"

2' 6" x 9' 6"

1750

2050

3000

90'

Duarm

Duarmic

Duarmical

. . .. Duwag

Duwag gish

'

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TOSIEXC

SPECIFICATIONS—

STANDARD TOOL EQUIPMENT

Not included in regular equipment

Code word ..............................................................................

Two Single Cutter Turners No. 162.
One Multiple Cutter Turner No. 163.
One Pointing Tool No. 164.
Two Plain Tool Holders No. 165, each with

Bushing No. 166-B 24

otherwise

specified.

” bushing will be furnished unless

*

furnished

as

.

extras.

Tri equip

one

HK

= 1*

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Continued

One Floating Tool Holder No. 167, with one Split Bush

ing No. 166-B. The 24
unless otherwise specified.

One Adjustable Drill Holder No. 173.

One Plain Drop-OfT Tap

with one Split Bushing No. I68-A. The 24
ing will be furnished unless otherwise specified.

One Die Adapter No. 172.

Split

!

—

±

One Plain Stock Stop No. 178-A.
One Front Forming Tool Holder No. 176.
One Rear Forming Tool Holder No. 177.

0

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” bushing will be furnished

and Spring

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Die Holder No. 168,

T
£

f

” bush

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'T HOLCS — ^U-S.S TAPPCP-

TURRET SPECIFICATIONS

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SPINDLE NOSE SPECIFICATIONS

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STANDARD ATTACHMENTS

Foster-Barker

Two-Jaw Chuck

Wrenchless

183—Recessing and Boring Tool

Increased Capacity Push-Out Master Collet

Maximum Capacity

Foster-Barker

Three-Jaw Chuck

Wrenchless

Increased Capacity Draw-Back Master Collet

Maximum Capacity—Round with Bushings

----

Round with Bushings

STANDARD TOOLS

|

I

2?

p;

I

M-348—Multiple Turning Head

a.

348-B—Cutter Holder

348-A—Cutter Holder

M-358-A—Pilot Bushing

M-358—Boring Bar

□

M-348-C—Pilot Bar

8

STANDARD TOOLS

(

continued

)

Plain Drop-Off Tap and Spring Die Holder

Single Cutter Turner

Pointing Tool

ip

w-

No. 169

Center Drilling Tool

Multiple Cutter Turner

No. 170

Knurling Tool

No. 168 A

Split Bushing

Adjustable Stock Stop

No. 178

a

No.

174

Front Tool

Holder

Die Adapter

No. 171

Adjustable Drop-Off Tap Holder

t

No.

Rear

Tool Holder

Plain Stock Stop

175

5?=

No.

166

Plain Tool Holder

No. 166 B

Split Bushing

Adjustable Drill Holder

B

No. 166 A

Flat Cutter Bushing

No. 167

Floating Tool Holder

No.

176

Front Forming Tool Holder

Rear Forming Tool Holder

Mr

No. 165

Flanged Tool Holder

9

No. 165 A

Adapter for

Forged

Cotters

V

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:

UNIVERSAL TURRET LATHES AND SCREW MACHINES

PLAIN HEAD SCREW MACHINES

Four Sizes

No. 0 .....

No. I .....

No.
No. 3 ..

n

2

.....

■Plk

.... ft x 3

.... *2 x 3

IA x 7

-I ft X 8/2

firmer ?

©SS5

rosiEHi

FRICTION HEAD UNIVERSAL

TURRET LATHE

No. 5

1 13 x I 1

r

i
I

FRICTION HEAD SCREW MACHINES

Three Sizes

No. 3 .....

No. 5 .....

No. 7 .....

GEARED HEAD SCREW MACHINES

Three Sizes

No. 3
No. 5
No. 7

....Irk x 8/2

....M3 x I 1

-2*

x I 1

Irk X 8J/

M3 x 11

2ft x 11

GEARED

2

10

No. 5

UNIVERSAL TURRET LATHES

I-B

2-B
3-B

HEAD UNIVERSAL

TURRET LATHE

Three Sizes

M3 x II

2 x 30
3«4 x 44

4/2 x 55