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Bulletin No. A-87-3
LANDIS
CHASER GRINDERS
AND CHASER GRINDING FIXTURES
12230^ MACHINERY CORF;
Uscfeouse
R Q BOX 1176, SYRACUSE, N. Y. 13201
: Former Kane & Roach Plant
:
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LANDIS IAACHINE C0D1PHIW,
uifivnESBORO,
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ptnnsvLV-flnm,
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Page 2
LANDIS Chaser Grinders
for grinding
LANDIS Chaser Grinders are designed to grind
LANDIS Tangential Chasers to the correct lead and
rake angles with a minimum waste of chaser life and
to do so with little loss of time. Although a LANDIS
Chaser Grinder is not absolutel}' essential to the proper
operation of a LANDIS Die Head, the accuracy with
which the chasers are ground will be reflected both in
the quality of the thread produced with the die head
and in chaser life.
LANDIS Chaser Grinders are built in three sizes:
The Model 0, No. 1, and No. V/o. The sizes and
price
ranges of the various machines are such as to
make available, to all users of LANDIS Threading
Equipment, a machine suitable for their individual re
quirements.
JAe (Klol&i Jlviantytment
Landis
angle of LANDIS Bolt Chasers when the chasers are
used in machines which do not employ a lead screw.
A rest, adjustable to any angle, is provided to facilitate
this operation. The straight wheel also may be used
for miscellaneous grinding.
rake angles of all pipe chasers and of bolt chasers
when the thread is to be cut with the use of a lead
screw.
OAe. Qdcvle'i Uo-tclinq, D.eu-iceb
ed on all LANDIS Chaser Grinders. The swivel head
is fully graduated so that any required degree of rake
and lead may be obtained.
Tangential
The straight wheel is used for grinding the rake
The cup wheel is used for grinding the lead and
A new type of swivel head for the chaser is employ
Chasers
The new LANDIS GRINDERS all have built-in
motors, the grinding wheels being mounted directly on
the armature shaft, thus eliminating gears or other
mechanical drives.
The motors which are used in these grinders are
of the ball-bearing, continuous duty type. A ball
bearing on the armature shaft assumes the thrust load
when chasers are ground on the cup wheel.
The speeds at which LANDIS Chaser Grinders
operate were selected with the view of obtaining
maximum efficiency and rapidity in the grinding
operation.
SMnditzty U/Aeetl
LANDIS Chaser Grinders are equipped with two
grinding wheels, one cup and one straight.
The
grade and grain, as well as the size of the
wheels used on these grinders, were selected because
of their longer life and efficiency in grinding. Wheels
that will not “
are absolutely necessary.
burn’' or damage the chaser in any way
Close-up of the Table and Swivel Head of No. 1 Yl
The chaser clamping screw contacts the chaser on
the dovetail surfaces in the same manner as the chaser
clamp of a die head. This provides a very rigid and
secure support for the chasers and insures
and lead angles are accurately ground and that these
angles will remain accurate when the chasers are placed
in
a
die head.
that the rake
Grinder
LANDIS Chaser Grinders
LANDIS MACHINE COMPANY
2
Page 3
OAe Yflo~del 0 5
The Model 0 Grinder is a small machine em
ploying a j/2 horse power motor. This machine is
designed primarily for grinding LANDIS Chasers for
the smaller sizes of LANDIS Heads which use chasers
z
\&\ to %" wide. It will efficiently grind chasers for
heads of all sizes up to z
MATIC and 1J4" LANDEX; and, if necessary, it may
be used for chasers \y wide. The motor is of the
ball-bearing, continuous duty type . Since the grinder
is small, it is an ideal machine for use in departments
where a number of LANDIS Heads are employed.
The use of the Model 0 Grinder, in a department,
eliminates the necessity of carrying the chasers to
the tool room for regrinding
The various motors which are supplied as standard
equipment for the Model 0 Grinder are listed under
the specifications of the machine on page 4.
AittdeA
/\' LANCO, 1 ]4" LAND-
filling the bushing with heavy grease when the swivel
head is withdrawn to the position where it would operate
with a
new grinding wheel on the machine. As the wheel
wears and the swivel head is advanced, the heavy
grease will gradually be forced out through all joints.
The action of the grease, coming out under pressure,
eliminates the possibility of having grit or dirt working
into the machine.
An additional feature of this fixture is an adjust
able stop for limiting the length of travel of the swivel
head, parallel to the wheel. Although the usual prac
tice is to grind the lip rake angle, of LANDIS Chasers by
hand on the straight wheel, it is now possible to grind
this angle on the cup wheel. By limiting the travel of
the fixture in which the chaser is gripped, with an ad
justable stop, it is a simple matter to control the grind
ing
of
the lip rake angle.
OAe flo-. 14 dMtideA
OAe Ylo-. 1 QALtid&l
The No. 1 Grinder is a heavy duty machine em
ploying a 1 horse power motor. This machine is
designed for the grinding of LANDIS Chasers from
y% to
wide. The No. 1 Grinder is an excellent
machine for use in tool rooms for the production grind
ing of LANDIS Chasers. The specifications for the
complete range of chaser widths arc shown on page 4.
The various motors which are supplied as stand
ard equipment for the No. 1 Grinder are listed under the
specifications of the machine on page 4.
Both the Model 0 and the No. 1 Grinders em
ploy a new method for infeeding the chaser and passing
it back and forth across the cup wheel. The swivel
!
head, in which the chaser is gripped for grinding, is
mounted on a cylindrical base. The cylindrical base
operates on a spindle and is fitted with a long handle
which is used to swing it in an
A feed screw, passing through the spindle, is provided
to infeed or withdraw the swivel head.
The infeed screw and the bearings, on which the
swivel head base operates, are fully protected from the
possibility of grit entering the sliding surfaces. A
bushing, which is fitted into the cylindrical base and
which extends into the bed of the machine, completely
covers the spindle and feed
arc parallel to the wheel.
screw. Provision is made for
The No. I]/? Grinder is an extra heavy duty ma
chine designed for the grinding of the LANDIS Chasers
under the most severe production conditions. This
grinder is equipped with a traversing table, at the
cup wheel end. Means are also provided, at the cup
wheel end, for the use of a coolant to reduce heat gen
eration and, consequently, to eliminate the burning of
the chaser.
Every precaution has been taken to prevent the
entry of grit or dirt to the sliding surfaces of the tra
versing table, etc. A guard, which
the table and which is cast integral with the travers
ing table, prevents the overflow of the grinding coolant.
The entire unit, consisting of the swivel head, travers
ing table, and table base, is mounted on guides with
a feed screw for infeeding or withdrawing the chaser.
The guides are protected by telescoping guards.
The table has gibs that are adjustable to compen
sate for wear.
A centrifugal pump, gear driven directly from the
armature shaft and located inside the bed of the ma
chine, provides a steady flow of coolant from a large
reservoir to the grinding wheel.
The various motors which are supplied as stan
dard equipment for the No. \ x/o
the specifications of the machine on page 4.
completely surrounds
Grinder are listed under
LANDIS Chaser Grinders
LANDIS MACHINE COMPANY
3
Page 4
I
LANDIS
Specifications
Chaser
of
Grinders
No. 1%
Net
Wgt.
(lbs.)
225
675
1395
40" x 38" x 48"
48" x 56" x 52"
65" x 50" x 53"
R.P.M.
No. 1
23" X 15%"
45% " high
29%6" x
48%," high
45**" x 35%"
4S%" high
Floor
Space
21%6"
Code Word YCBUH
Gross
Wgt.
(lbs.)
395
1020
1825
Model 0
Code Word YCBOS
Type
Model
0
No.
1
No.
iy
one straight.
wide chasers for L. H.
**Special parts will be furnished for Model “I” Grinder, upon request, to grind: (a) chasers
R. H.; (b) chasers
for L. H.; (b) receding chasers 1%" and 2" wide.
These machines are painted the standard machine tool gray.
Standard Range
(width of Chasers)
*%" to i%"
Right Hand
**Vs" to 2H"
Right Hand
to 4%"
2
Standard equipment consists of tool rest, chaser grinding attachment, and two grinding wheels: one cup and
* Special parts will be furnished, upon request, so that the Model “O” Grinder can be used to grind %" to lf
Right Hand
For the Model “1%” Grinder special parts will be furnished, as required, to grind: (a) chasers
M H.
Continuous Duty
110 Volt Single Phase
220
Volt 3 Ph
50 Cycle 3000 R.P.M.
CO Cvcle 3
1 H. P.
A. C. Single, two, or three phase
25 or 50 Cycle 1-125
GO Cycle 1725 R.P.M.
D. C.—1725 R.P.M.
2 H. P.
A. C. Single, two, or three phase
25 or 50 Cycle 1125 R.P.M.
GO Cycle 1725 R.P.M.
D. C—1725 R.P.M.
to 1 yk" for L. H.; (c) receding chasers 1%" and 2" wide.
Code Word YCJ3RY
Motor
H.P. and Speeds
P.
asc A.C.
GOO R P M.
Boxed
Measure
ments
y{§
to 3u/ig" for
to 2%"
LANDIS Chaser Grinders
LANDIS MACHINE COMPANY
4
Page 5
Specifications
of Grinding
Wheels
Grinder
Model 0
Model 1
60
cy.
Model 1
for 25 &
50 cy. Motor
Model 11/2
60 cy. Motor
Model li/2
for 25 &
50
cy. Motor
Motor
Shape
of
Wheel
Sir.
Clip
Sir.
Cup
Cuj)
Cup
Sir.
Cup
for
Dimensions of Wheel
7" dia.. ]/>" face, %'r
6" dia., 2" face,
5" co-bore, 1 deep
12" dia., 1"
12" dia., 2j/£" face, 7" bore
9" co-bore, 1 deep
14" dia., 1" face, 1" bore
14" dia., 2J4" face, 7" bore
11" co-bore, 1 Ys deep
12" dia., XYi' face, 1" bore
12" dia., 2
9" co-bore, 1 deep
14" dia., 1 y>' face, 1" bore
14" dia., 2J/£" face, 7" bore
11" co-bore, 1 Vs" deep
face, 1" bore
}4" face, 7" bore
bore
bore
LANDIS Chaser
Carborundum
Grain
DGAGO
DO AGO
DO AGO
DGA4G
DGAGO
DGA4G
DGAGO
DGA4G
DGAGO
DGA4G
Grade
L5
Ko
L 5
Ko
L5
Ko
L5
K5
L5 V20
K5
Bond
Grain
V20
V20
Y20
V20
V20
V20 i 32A4G
V20
V20 ;
V20
32A60
32 A 5-1
32AG0
32 A 46
32 A GO XG
32AG0
32A4G
32
AGO
32A4G
Grinders
Norton
Grade
NO
L5
XG
L5
1.5
XG
L5
XG
L5
Bond
VBE
VBE
VBE
VBE
VBESir.
VBE
VBESir.
VBE
VBE
VBE
Grinding
Attachments
for
S.eiAt Ko-tte-fi G.utte'i.
Sending, AttacPime.n.t
The Roller Cutter Disc Grinding Attachment may
be applied to the Xo. 1 and Xo. 1/2 LAXDIS Chaser
Grinders. The attachment is used in connection with
the straight wheel after the steady rest has been re
moved.
The cutter disc grinding attachment efficiently
handles discs of all diameters. The cutter disc is mount
ed on the end of a shaft which is adjustable, in a hori
zontal plane, for obtaining any desired bevel on the cut
ting edge. A hand wheel, with a polished heavy rim,
is mounted on the opposite end of the cutter shaft and
permits revolving the disc or retarding it if the peripheral
speed becomes too great.
Infeed is provided by means of a hand wheel at the
LANDIS Chaser
front
of
the attachment and cross traverse is provided
by a hand wheel at the left hand side. The cross tra
verse permits withdrawal of the slide for mounting or
removal of the cutter disc and aids in preserving an even
contour on the face of the grinding wheel.
Grinders
LANDIS Chaser Grinders
LANDIS MACHINE COMPANY
5
Page 6
The
No.
15 and
No. 20
for
Grinding
Fixtures
LANDIS Tangential
Chasers
i
These Fixtures provide an extremely inexpensive
and satisfactory method of grinding Landis Chasers.
The Fixtures have a universal adjustment which per
mits accurate grinding of the rake and lead angles on
the cutting edge of the Chaser. These angles are very
important in the production of accurate, well-formed
threads. The Fixtures also provide a means of regrind
ing the throat angle of the chasers, if absolutely neces
sary.
Supported by the base casting is a cross arm, which
is arranged so that the chaser platen can be adjusted
vertically. This feature makes possible the grinding of
any desired rake angle. The platen can be rotated
throughout a 360 degree circle horizontally, thus pro
viding an accurate means of producing the desired lead
angle. Knurled knobs, which have pin holes for added
leverage, securely hold the Fixture in position in which
it is set.
LEAD ANGLE GRADUATIONS
GRADUA
!
3
4
SPECIAL
WIDTH TONGUCS WILL
BE SUPPLIED ON REQUEST.
The No. 15 Fixture
It can be readily adapted for use on any Grinding
Machine which has a traversing table, regardless of the
type grinding wheel it uses. The base of the Fixture is
made so that it can be clamped to a T-slotted table, or
on a magnetic chuck.
The No. 15 Fixture can be used on all Landis
Chasers from 34" to \l/\" wide. The No. 20 Fixture
RAKE
ANGLE
TIONS.
covers chaser widths from 134" to 4%". This Fixture
can also be used for chaser widths from
by the addition of a grinding block which will be fur
nished on request. Either can be used to grind Chasers
for right hand or for left hand threading.
%
_L_
*
-
k
,
©•
'p\
33
I
1
tY/07~//
The No. 20 Fixture
r<7/V'<?C4T /%
to lj4"
LANDIS Chaser Grinders
LANDIS MACHINE COMPANY
6
Page 7
Rake QAindinq. OxoduAe froA
£attdti Qo-ttapAikte Oxvfx SfiaAeU,
The LANDIS Tap Chaser Rake Angle Grinding
Fixture provides the proper means for grinding the
chasers employed in all LANDIS Collapsible Taps. Its
use will insure the best performance and longer life for
the chasers. This fixture can also be used for grinding
Victor Tap Chasers.
The swivel bracket carries the vise for holding the
chaser. These parts are also graduated to obtain any
desired amount of rake angle as required for the ma
terial being threaded. Chasers are clamped individual
ly in the vise and locked with an adjustable spring lock.
O,PiAo-at dAuiduiq OxatuAeA fyoA
£atidiA QoMapAiMe dap dhaAeAA,
!
Tap Chaser Rake Grinding Fixture
The LANDIS Tap Chaser Rake Angle Grinding
Fixture is adapted for use on any standard make of
tool and cutter grinding machine having a traversing
table. The base is provided with T bolt slots for at
taching the fixture to the table of the machine. Grind
ing
is
done by moving the table back and forth, pass
ing the chaser against the face of a straight wheel.
Tap Chaser Rake Grinding Fixture
Attached to the base of the fixture is a swivel
bracket, which can be rotated in the horizontal plane
to obtain the desired degree of azimuth,
angle at which the chaser is set from the parallel for
grinding the chaser with a gun tap grind. Graduations
are provided on the base and on the swivel bracket, rang
ing from 0 to 30 degrees positive and negative.
Dimensions of
This is the
LANDIS collapsible tap chasers seldom require re
grinding of the throat angle. Usually, a regrinding of
the rake angle will suffice. When it is necessary to re
grind the throat angle it is important that this be done
properly. The LANDIS Tap Chaser Throat Grinding
Fixture will assure having all the chasers in a set ground
accurately and uniformly.
Fixture is adapted for use on any standard make of tool
and cutter grinder having a traversing table. The base
is provided with T bolt slots for attaching it to the table
of the machine. Grinding is done by moving the table
back and forth, passing the chaser against the face of a
cup shaped 'wheel.
ries the spindle and vise for holding the chaser. The
throat, on all LANDIS tap chasers, is ground with a
radial clearance based on the diameter of the thread
being cut. The vise is adjustable for setting the chasers
on a radius corresponding to that of the thread which
they are to cut. Graduations from 1" to 13" are pro
vided to determine the proper setting.
A micrometer adjustment is provided for obtaining
the desired amount of radial clearance as required for
the grade of material being tapped.
never by ground by tree hand
Tap Chaser Throat Grinding Fixture
The Landis Tap Chaser Throat Angle Grinding
Attached to the base, is a swivel base which car
The throat angle on LAXDIS tap chasers should
.
LANDIS Chaser Grinders
LANDIS MACHINE COMPANY
7
Page 8
j
I
!
The
BRET
THREAD CUTTING MACHINES
Landmaco Threading Machines
Bolt Factory Threaders
sax
LANDIS
Automatic Forming and Threading Machines
4 Spindle Semi-Automatic Threading Machines
Pipe and Nipple Threading Machines
Automatic Nipple Threading Machines
THREAD CUTTING DIE HEADS
Landmatic (for Turret Lathes and Screw Machines)
Landex (for Automatic Screw Machines)"'
Lanco (for Automatic, Semi-Automatic and Hand-
Operated Threading Machines)
Lanco Pipe and Nipple Threading Heads
Stationary Pipe-Die Heads
Reverse TaperJBJeyHeads
Standard Rotary Die Heads
Line
.
CENTERLESS THREAD GRINDERS
PIPE THREADING AND CUTTING MACHINES
1
j
ROLLER PIPE CUTTERS
CHASER GRINDERS
COLLAPSIBLE AND ADJUSTABLE TAPS
'y
LANDIS MACHINE COMPANY
Waynesboro, Penna., U. S. A.
Detroit, Mich.
Chicago, 111.
Welland, Ont., Can.
.COWDEN MACHINERY CORP.
Warehouse! Former Kane & Roach Plant
R 0. BOX 1176, SYRACUSE, N. Y.
HBPCO.-3500-152
,
Cleveland, Ohio
13201
PRINTED IN U. S. A.
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