Merrow Class 60 Instruction Manual

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Instructions for Setting Up

and

Operating

THE

MERKOW

High

Speed

Trimming and Overseaming Machines

Class

60

The

1905. 1909. 1918, 1917, 1919, 1922. 1928. 1930, 1933, 1937, 1944

Merrow

28

Hartford,

The

Merrow

Machine

Laurel

Copyright

Street

Conn.,

by

Mnchine

Company

U.

S. A.

Compnny,

THE

MERKOW

T

^HIS

numerous

liave

machines

made.

been

comx)any

inventions

granted,

indicated

MACHINE

has

for

which

under

in

this

exclusive

Letters

some

of

book

COMPANY

control

Patent

which

have

been

of

the

These

and

All

this
the

infringe

patents

methods.

machines

company

features

the

also

other

containing

covered

latter,

and

include

than

any

by

any

each

many

those

one

or

of

said

individual

products

made

more
patents,

maker

by

of

or user is liajjle for the profit obtained by the

use

of

the

damages

patents.

All

these

and

constructed

high

speed,

always

used

production

patented

siistained

imu^hines

and

with

witli

and

I'epairs.

by

for

continuous

reasonable

great

inventions

the

are

especially

economy

as

owner

running

care

well

of

designed

they

in

cost

as

the

at

are

of

- " 'v. ]

.CLASS

60

INSTRUCTION

BOOK

In operating our

of

power

the
being

machine

sui>plied

transmitter or

by the

usually from a driving shaft near the

We are prepared to

from

driving

pulley for driving shaft.

All

sizeingeneral

largerwecan

Any

for

our

When a

of the driving shaft and the

supply

machines at the proper speed.

shaft and for the

our

split

use

rebore

power

machine.

power

a split

pulley

machines

underdriver

foot

of the operator, the power for driving the

furni.'^h

pulleys

and

are

whichwerecommend,

the

pulleytofit

transmitter

transmitter is

of the right bore to

See

"Howtoorder

Power

suitable

Transmitter

it is

necessaryordesirable

for

ball

bearing

usual

round

boredtofit

or if

for

ordered,

speed

at which it runs, in order that we may

supplies" on page

to use

conveniently

power

belt to the

!•£%"

shafting

butifthe

starting

floor,

under the

transmitters for

machine,

whichisthe

driving

smalleritcanbeproperly

driving

sewing

we

shouldbeadvised

fit

and of

machines

suitable

Jf.

some

and

round

including

shaftis

will

of the

size

to run our

stopping

machine

table.

standard

slightly

bushed.

answer

kind

belt

split

size

THE

MERROW

MACHINE

COMPAN.Y

The ball bearing transmitters permit of setting the machine at or very

near the front edge of the table and are desirable for continuous running at

very

high

speeds.

The front end of the forward leg of the ball bearing power transmitter

should

be

set

under

the

table

about

one

and

one-half

inches

back

from

the

front edge of the base of the machine set on top of the table.

A convenient guide for boring the belt holes at the proper angles may be

made from a

short

piece of board four inches wide and seven-eighths of an

inch thick with either end sawed to the proper angle, which can be taken from

a

.sketch

made to scale in the manner indicated on page 3.

HOW

TO

ORDER

SUPPLIES

A Price List of Parts for the Merrow Class 60 Machines, alphabetically

and

numerically arranged with illustrations of

model.«:

of parts and code words

therefor, is available upon request.

Refer to illustrated parts and order by model number there given, stating

both serial

and

style number of the macliine for which the parts are wanted.

When

ordering needle plate, specify width of finish desired, whether long

or short chaining finger and size of needle used.

Loopers

may be

ordered

by model number, which is stamped on the

shank

of each looper; or otherwise, by stating whether upper or lower loopers and

whether for the one, two or the three-thread stitch, together with the style

or serial number of the machine in which they will be used.

We have a complete record of all parts of each machine as it leaves

our

factory and as all parts are strictly interchangeable we can supply duplicates

if given the name of the part with serial and style number of the machine.

Postage, registry, special delivery and insurance cost will be charged.

We

shall

take

but

cannot

every possible precaution to insure prompt

be responsible

for

delaysorlosses in transit.

and

safe

delivery

CLASS

60

INSTRUCTION

BOOK

Instructions

High

The

Merrow

are

made in

book

complete

The

general instructions immediately following apply to all varieties

for

Speed

Sewing

High

many

modifications

instructions

Setting

Up

and

Trimming

Machines,

Introductory

Operating

and

Overseaming

Class

60

The

Merrow

Speed Trimming and Overseaming Sewing Machines

and

it is

for

all

variations.

hardly

feasible to include in this

this class except when otherwise stated, and the specific instructions, as

therein explained, apply to

machines.

For

identificationofthe various

may be

of

this

had

to the illustrations with names of typical

book.

particular

stylesorvarietiesofthe same class of

parts

named in these instructions

partsinthe

reference

back pages

Many of the modified forms of the Class 60 Machines have become stand

ard

varieties, some of which are so designated by a letter or letters following

the

class

AD

ABB

number

indicates

indicates

as,

for

"Sweater"

Butted

instance,

machine

.Seaming.

GOAD,

with

GOB,

differential

GOD,

etc.

feed.

B indicates that the machine produces a deep finish.
BU

indicates machine for scalloping Marseilles quilts.

D indicates differential feed, as

for

instance

GOD,

GOUD,

etc.

D3B indicates extra wide butted seaming.

E

indicates

twoorthree

thread

machine

without

cutters.

F indicates machine without trimmers for "serging".

H indicates blind stitch hemming for bottom of shirts.

JDC

indicates

Rayon

Seaming.

K indicates the *'K" stitch for sewing on cuffs.

Q indicates

RD indicates retentive edging—for scalloping or straight

three-thread

shell stitch.

edging.

S indicates blind stitch hemming for the tops of stockings.

SS indicates selvage seaming.

U indicates scalloping edges on quilts, flannelette and the like.

UD indicates ends of ties, closing toes of stockings and mock seaming.

of

See

"How

to order supplies" on page 4-

5

THE

UERROW

MACHINE

COMPANY

W indicates that the machine produces the

thread

goods, making a close, tight seam

when the two pieces which have been overseamed together
single, leaving the overedge seam projecting inside the goods, thus finishing
or covering the raw edges and producing a tight seam in

stitch

with

the needle

Setting

thread

drawn

having

Up

the

the appearance of a lock stitch seam

"W"

down closely

Machine

stitch which is a three-

on

both sides of the

are

flattened out

one

operation.

1. Provide a smooth table with a'top at least two inches thick and about

twenty-eight inches high.

2. Immediately after removing the machine from its box observe the
threading carefully and compare it with the descriptions of threading in
sections 100to 106,and the figures therein referred to. The manner of thread

ing is not exactly the same in all style

3.

under the

the hand

machine

shaftof

table.

Do

Secure

parallel with the front

the

not

base

wheel

machine
screw

the

machine

of the

being

to the

machine

using the screws also sent with the machine,

at the right of the operator and the front or

edge

not

more

than

the

machinetothe

If the ball bearing power transmitter

the

machine

tableashas

60S

Machines.

maybeset

been

found

with

the

front of its

desirableinsome

machines.

table

with

the felt pad sent

with

the

base

of the table and the center of the main

five

inches

table

back

very

described

base

cases

and

from

tightly.

on

pages

at the

particularly

the

very

front

edgeofthe

3 and 4 is

front

edge

for

the

machine

of the

used,

of the

Style

4. A driving device known as a power transmitter or underdriver should

be used for running the machine. See page 3.

5. The shaft which drives the power transmitter should be

diameter

9 inches above the floor and sufficiently back from the front edge of the table

which

is the

standard

size,

and

should be located

under

the

1^

table

inches

about

to be at all times beyond the reach of the clothing of the operator. See page 3.

6.

Use

the

power

7.

8.

round

transmitter.

Avoid
The

top

leather

crossed

of

the

belts

hand

belt

when

wheel

inch

diameter

possible.

must

turn

to

from

drive

the

the

machine

operator.

from

Speed

9.

The

Styles 60, 60H, 'iOK, 60S and

special varieties which cannot be enumerated here, are

tinuously at very high speed, and we recommend three thousand to three

thousand five hundred stitches per minute according to conditions. While

the machines may run well with little care they will give better results with

suitable

attention

and

care.

See

"Howtoorder

6

60AV

Machines, as well as some

supplies" on page

adaptedtorun

Jf.

con

CLASS

60

INSTRUCTION

BOOK

Many Merrow Machines have been known to run a year

and

longer with

out a single part being replaced or even an adjustment.

10.

The

Style

GOB

Machines

are

recommended to

run

at

twenty-five

hundred to three thousand stitches per minute according to conditions.

11.

For

the recommended speed of styles not enumerated above,

refer

description of the individual style in our catalogue.

Thread

Stand

12. Screw the thread stand to the table top back of machine with the left

end of the base far enough to the right to be clear of the goods which pass

back beyond the machine.

13. The thread, yarn or silk should be wound on cones or conical bobbins

which

should stand vertically, the tlyead

stand and

thence

diagonally

downward to the

leading

up to the top of the thread

machine.

14. Never run the thread, yarn or silk from cylinders or from two headed

spools—cones

are

best.

15. Use no needles or other parts not made expressly for the machine.

16. Keep the machine clean.

17.

Before re-assembling a machine,

that

parts, be sure

from

all

grit

18. Oil frequently, at least
These

19.

every surface of every

and

lint and

machines

that

each frictional

four

are

necessarily fitted very closely in

after

part

is thoroughly clean and free

surface

times a day.

having removed any of its

is oiled.

order

to attain

their very high speed and great durability, and therefore they need frequent

oiling, especially when new. Use best quality of lubricating oil. We do not

recommend

20.

21.

so-called

After

Parts

stainless

continued

cannot be changed in

oil

idleness

for

first

the

purpose.

use

kerosene

form

without liability to

oil.

injury.

to

The

Needle

22. Self-setting needles marked

Class 60
OD,
4D,

curved

Machines,

No.

ID,

No. '2D. No.

No. oD

23.

and

blades, the No.

Use

areofthe

No.

8D, all

GGOD

No. 3D needle

2DF,

following sizes,

No.

have

being the finest.

for

"D",

2SD,

No.

straight

general work

used in all varieties of recent

viz:

No.

3D,

shanks,

and

GOOD,
No.
flattened at

always when practicable.

3SD,

No.

No.

one

GOD,

3SDF,

side,

24. Adjust the "D" needles with the end of the shank in contact with the

stop pin in the needle carrier.

25. Tighten the nut at the left of the upper part of the needle carrier

just

firmly

26.

needle plate.

but not unduly to hold the needle in place.

The

blade of

If

the

needle

must

not be too large

a needle too large is once forced through the needle slot,

for

the

slot in the

the latter is likely to be much injured.

See

"How

to order supplies" on page 4-

t

V

No.

No.

and

' 27.

THE

The

M E R R O W

The

MACHINE

Needle

COMPANY

Carrier

needle carrier must be perfectly free to swing upon its stud but

must have no lateral movement. This adjustment is accomplished by first

loosening

the machine, directly back of the center of the needle

sible from the rear of the machine, outside.

the

needle-carrier-stud set-screw which is located in the

carrier

If

the loosening of this screw is

frame

stud, and acces

of

neglected in a single instance the machine will be injured. See cut on next page.

28. Screw the needle carrier stud in or out very delicately until the

proper adjustment is attained and then tighten the needle-carrier-stud set-

screw and lest the needle carrier again. When replacing this stud, after remov

ing it,

clean

it thoroughly, oil it, and be careful to enter it properly so as never

to cross the threads and thus injure the

The

29.

The

needle slot

of the needle to pass

30.

A needle plate for the wide finishorseam cannot be used in machine

made

for

the

narrow

31. A needle plate

junction

with

a presser foot provided

must

through

finish

with

always be large enough to

freely .without contact

or

seam.

very

Needle

short

hole,

as the threads are very

Plate

with

finger

must

with

a long finger.

fine.

permit

the needle plate.

usually be used in con

the blade

32. A needle plate with long finger is for use in conjunction with a

presser foot without finger, but in exceptional cases is used with a presser foot

provided

with

a finger.

See sections 47 to 51, concerning presser feet.

The

33.

The

lower looper is best set

placed

in the

machine

with sections 22 to 26,

removed.

34.

To

set the lower

Lower

and after the

the

needle plate being, preferably,

looper:

First

Looper

and

adjusted before the upper looper is

needle

has

been

properly set in accordance

but

not necessarily,

loosen the lower looper screw which is

accessible through a hole in the front of the frame cap. As this screw is justto

the left of the upper looper screw, be sure to loosen the proper screw.

the hand wheel
moved to its extreme right

the

left

with

(it

should pass in easily),atthe
until the needle is at
the eye

of

(the

top

from

the

operator)

hand

position

the

needle rising.

Then

same

or

near

the

extreme

the

lower looper should exactly register with

See

"How

to order supplies"

until the lower looper

and

push

the

time slowly
upward

8

carrier

has begun to move towards

lower

position.

on-

page 4.

looper

turning

into

its

the

hand

When

properly

the

hole in the lower

carrier

Turn

has

wheel

set

STUO,

SCREW

CARRIER

SET

STUD

NEEDLE

CARRIER

A0JUSTIN6

NEEDLE

eCFORE

SCREW

SET

SCREW.

SET

THIS

TOTISHTEN

LOOSEN

SURE

BE

©

STUD.

CARRIER

NEEDLE

OF

ADJUSTMENT

AFTER

/

CO

THE

MERROW

MACHINE

COMPANY

looper thread tube

(just

under and supporting the needle plate), which can be

determined by using a small wire (the threading wire sent with the machine

will do) which should pass through the hole in the lower looper thread tube

and directly through the eye of the lower looper when the latter is in its extreme

outward

(left

hand)

position

and

the needle up.

Tighten

the lower looper

screw firmly but not unduly, then turn the hand wheel and see that the point

of the lower looper comes into gentle but certain contact with the needle as

the looper moves Inward.

The

point of the looper should cause the needle to

deflect or dodge slightly in passing.

When

position below

the left, beyond the needle at least one thirty-second of an inch.

If

looper shank and the lower looper carrier.

the lower looper, without a thread eye, is at its extreme left hand

the

needle plate, the point of the lower looper should

the lower looper screw is tightened unduly it may spring the lower

The

Lower

Looper

Carrier

extend

to

35. The lower looper carrier is beveled at its top and bottom edges form

ing a "dovetail"

which

is guided and runs between the upper and lower gibs

and a reversible plate, all located on the inside face of the frame cap, the lower

gib

being

located permanently, and the upper gib being adjustable by

of the upper gib

reversible

When

plateisclampedinpositive

worn,

this

key

held to the frame cap by a screw in a slotted

position

plate

maybereversedtopresentanew

by the upper and lower

bearing

means

hole.

surface.

The

gibs.

36. The lower looper carrier should be perfectly free to travel its full

stroke horizontally in either direction but should have no undue lost motion

up

and

down.

37. Adjustment of the sliding fit of the lower looper carrier can be made

by means of the upper gib key above the upper gib. After readjustment,

tighten both screws which hold the upper gib and the screw that holds the
upper gib key and lastly test the sliding fit of the lower looper carrier as it

must not bind the least at any point in its travel.

The

Upper

Looper

38. Upper loopers are made in two general forms, one style for two-

thread stitch and the other for three-thread stitch, the former kind being

made with a throat to carry the lower looper thread to the needle above,

and the other kind being made with an eye to carry the third thread through

a loop of the lower looper thread and over to the needle above the fabric.

The

adjustments

39.

The

upper

looper previously in adjustment. See sections 32 to 26 concerning the needle,

and

sections 33

rN.

of two kinds of upper loopers

and

looper

3-1

See

should

concerning the lower looper.

"Hozv to

always

order

supplies" on page 4-

10

be set,

with

are

similar.

the

needle

and

lower

40.

CLASS

The

upper looper is secured to the upper looper

60

INSTRUCTION

BOOK

carrier

by a screw

accessible through the right hand end of the opening through the front of

the frame cap. This screw (which is located just to the right of the screw for
the lower looper) must be loosened before introducing the upper looper and

care

should be

taken

not

to loosen the

wrong

screw.

41. In setting the upper looper, turn the hand wheel until the needle is

at or near its highest position when the upper looper screw will be accessible
and the upper looper can be introduced into its carrier after its screw is suffi

ciently loosened.

42. The upper looper should be pushed into its carrier

(it

should pass in

easily) until by turning the hand wheel forward and backward it is found that

the looper when moved from right to left above does not hit the point of the

needle. Then

the upper looper is about to pass down back
be examined to see that its point does not conflict with the back side of the

turn

the hand wheel

(top

from the operator) until the point of

of

the lower looper when it should

lower looper. When properly adjusted finally, the point of the upper looper

should pass by the slabbed or flattened portion of the lower looper, in very
gentle contact therewith,
of the lower looper, the front side of the upper looper at the right of the thread
passage being clear of the bulge around the eye of the lower looper.

just

to ihe left of the boss or bulge around the eye

When

so

adjusted the upper looper screw should be finally tightened, firmly but not

unduly, as the parts might be sprung with too much force. Finally

turn

the

hand wheel (top from the operator) a number of turns and see that the loopers

and needle are properly adjusted to each other.

If

the upper looper is set too

far outward (to the left) its point may catch the needle thread below and

cause skipping or imperfect stitching.

A small percentage of Class 60 Machines employ lower loopers without

a thread eye, and in such cases the point of the upper looper, when below

the needle plate, should pass to the left

beyond

and just clear of the extreme

left hand end of the lower looper.

See section 44 to 46 concerning looper carrier guide, etc. See sections

100 to 106 concerning threading.

The

Upper

43.

The

upper looper carrier must be perfectly free to travel its full stroke

in either direction but must have no lost motion laterally. This adjustment

Looper

Carrier

can be tested by taking hold of the upper looper, when it is in its extreme

outward position above the presser foot and needle plate, and alternately

pressingittoward
besides a needed freedom, then the looper

which see the following section.

rolls probably need renewing.

and from the operator.

If

there is undue looseness vertically the cam

See

"Howtoorder

supplies"onpage

11

If

there is

carrier

any

lateral looseness

guide needs adjusting,

Jf.

for

THE

44.

The

two screws,

These screws should always be light and should not be loosened unless to

remove the upper looper carrier,

machine.

45. The left end of the looper carrier guide is designed to rest against

the forward end of the adjusting slide which is located in a channel at the

left

endofthe

M E R R O AV M A CIIT N E

The

looper

near

machine

Looper

the

carrier

right

frame,

Carrier

guide is attached at one end. to the

hand

Guide

edge of the

after

between

COMPANY

and

Adjusting

frame

the frame cap is taken from the

the

latter

and

Slide

frame

cap, accessible outside.

the

headofthe

machine

cap by

and is held in adjustment by a screw accessible at the rear of the machine.

The adjusting slide
the looper carrier

upper

looper

towards or away from the operator. This can best be

ing its
forward

retaining

and

should

guide,

be adjusted to press

which is made to spring within limits, to hold the

carrier so that it

screw

and

withahammer

testing,

afterward

will

have no lost

tightening

always

against the left end of

motionorlooseness

done

gently

the

tapping

retaining

by partially

the

adjusting

screw.

laterally

loosen

slide

46. When the looper carrier guide is too tight to allow perfect freedom of

movement

may be adjusted backward by first fully

rear end of the adjusting

partially

the adjusting

adjusting

must

of the upper

tightening

slide

be

afterwards

slide

being

looper

slide,

the

retaining

forward as

partly-

loosened

tightened.

carrier, the left end of the looper carrier guide

moving

screw

before

loosening

the latter

and

withalight

explained.

when

adjusting

the retaining screw at the

slightly

hammer

TJie

the

screw

looper

backward,

gently

which

holds

carrier

then

tapping

guide.,

the

The

Presser

Foot

47. For ordinary seaming, where seams or thick and thin places must be

crossed, a hinged presser foot with a finger around which the stitches are

formed,

finger

shouldbeusedinconjunction

and an

48.

u])per

looper, for producing the two-thread stitch.

For

i)lain seaming with the two-thread stitch when seams

withaneedle

plate

with

a very

are

to be crossed, a plain presser foot with finger instead of a hinged presser foot

is

recommended.

49. For ordinary three-thread

or a presser foot made to use without presser foot

a

needle

presser foot with a

to

plate

50.

For

advantage.

withalong

edge finishing only with two threads, in exceptional cases a

finger

finger

and a

and an

needle

work,

use a presser foot with a stub

finger,

upper

looper

plate witha long

withaneye.

finger

finger

in conjunction with

are used together

51. Ordinarily use as little pressure for the presser foot as is practicable,

the degree of pressure being adjustable by the presser foot adjusting screw

See

"How

to order supplies" on page 4.

IS

H

short

.not

CLASS

60

INSTRUCTION

BOOK

at the upper part of the head, of the machine, which screw may be held in

adjustment by the small set screw at the right side of the

head.

upper

partofthe

See next following section about presser foot fingers.

Presser

Foot

Fingers

52. The presser foot finger should be so adjusted upon the presser foot

that its left edge just covers the right edge of the slot in the needle plate, so
that if the point of the needle should be slightly deflected to the right it would

not hit the

for its purpose use a wider one.

53.

suitable

54.

needle

For

width.

For

plate. If then the presser foot

finger

is not wide

stitching with two threads, use a long presser foot finger of

stitching with three threads, use presser foot stub finger, if any,

enough

instead of the long finger.

See sections 47 to

55.

With

few exceptions the Class 60 Machines are provided with cutters

51.

concerning presser foot.

The

Trimmer

for trimming off the surplus material at the edge of tlie fabric, simultaneously

with,

but

a little in advance of the overseamingoroveredging.

The

56.

The

lower

Lower

cutter

is held in place in the lower

Cutter

cutter

holder by

the

lower cutter clamp with slotted clamp nut accessible at tlie left of the lower

cutter holder, with the cutting edge at the top end and to the right and about

one thirty-second of an inch

above

the top of the

needle

plate. It

should

never be set so high as to come in contact with the bottom or edge of the

presser foot.

When

the cutter is properly located vertically, tighten its clamp

nut firmly but not unduly.

57.

To

upward.

58.

frontofthe

remove

The

lower

the

lower

cutter

loosen its

clamp

nut

and

push

the

cutter

lower cutter holder is held in adjustment by a clamp screw in

cutter

holder

support

and is laterally

adjustable

by means

of a collar screw (usually with slotted head) in the lower cutter holder support,

at the left and just below the lower cutter holder. It is best to loosen the clamp
screw before adjustment and tighten it when adjustment is completed.

59.

As the lower

is

best

to first

set

the

cutter

lower

is used in conjunction

cutterinits

proper

with

vertical

the

position

upper

and

cutter

then

set

it laterally to the right distance from the line of penetration of the needle,
afterwards setting the upper cutter in accordance with sections 62 to 65, and

it

See

"Howtoorder

supplies" on page

IS

Jf.

THE

MERROW

MACHINE

COMPANY

finally

with

possible

very carefully adjust the lower cutter into easy but certain contact

the

upper

cutter.

60.

The

lower cutter should press against the upper cutter as gently as

and

yet do its work. When both cutters are very sharp the pressure

together may be very light, and after running that way until they begin to

show signs of imperfect cutting, the pressure may be slightly increased. In
this way the cutters will last a long time under good conditions without

sharpening.

61. The adjustments should be made delicately as the cutters (excepting

for

special

being positive.

well and the machine may

cutter
narily it should be so set
a little below the top

accordance

^

an

hexagonal headed binding screw at the top

(using a small wrench sent with the machine) and thus the upper cutter can

be set laterally to

of the needle. When adjusted to the proper position laterally, tighten the

purposes)

See sections 73 to 79 for instructions about sharpening cutters.

62.

The

upper

holder clamp

with

63.

To

remove

64.

The

are

not held in contact by a spring, all of

If

the cutters

cutter

andisadjustable

that

of

sections

the

upper cutter holder is adjustable laterally by first loosening

trim

the

are

forced together tightly they will not last

thus

be made to

The

Upper

is secured to the

therein diagonally upordown.

its

cutting

the lower cutter, the lower

56to61.

upper

cutter,

proper

widthordepth

run

.hard.

Cutter

upper

edge when in its lowest position will be

first

remove

of

from the line of penetration

cutter

cutter

the

the

upper

the

holder by the

being

cutter

upper

cutter

movements

upper

Ordi

set

first in

clamp.

carrier

binding screw, just firmly but not unduly, and then adjust the lower cutter as

explained

upper

the upper cutter must be so set that its downwardly projecting guard will be
at all times in contact with the right hand face of the lower cutter.

in sections 56 to 61.

65.

If

the fabric is very thick or if heavy seams are to be cut across, the

cutter

should be set somewhat higher than

for

thin fabric.

In

any

The

case

lower

cutter should be in the machine when adjusting the upper cutter.

See sections 56 to

cutter

must

co-operate.

61

concerning the lower cutter with which the upper

See sections 72 to 79 for instructions for sharpening the cutters.

The

Cutter

Grinder

66. Each customer should have a special cutter grinder particularly

adapted

for

grinding

the cutters for the Class 60 Machines.

67. Those not provided with a cutter grinder can have dull cutters ground

by sending them to our office in Hartford, or to our distributing points in

See

"How

to order supplies"

U

op.

page 4-