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Dec. 31, 1946.
|_. E. SIMMONS ETAL
4
2,413,585
CUTTER CHAIN
Filed Aug. 18, 1943
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725.
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lazvent’ors
lieonEJ-Qknmond’.
_. a HarryEVandayee.
3
'
A...‘ '4' 141mm
azt’y.
‘2,413,585
Patented Dec. 31, 1946
§uNi1rEi1o';sTAr;-Es PATENT ewe:
Leon.Ehs'immonztglifwf?zf?u
andHarryH
Vandcrzec, Michigan City, 11111,, assignors to
Joy Manufacturing Company, a‘ corporation of
vPennsylvania
application aligns ~18, ins-seams. 499.094
4Qlaim5 (01, 262433.)
,
".1
.
_
.
conventional design comprising chain blocks vI
This invention relates “to cutter chains and
more '.particularly -.to .an improved urnining ina
chine .cutter .chain wespeciallydesigned for vvuse in
the cutting of coalorthe like.
‘
- which are pivotally connectedat .2 to strap ,links
3. These strap links have usual .gibs 4 adapted
for reception ;in the vguideway of a .conventional
cutter ,bar. Each chain block has a lateral lug
.
An object .of the present {invention is to pro
.5 in which the improved socket generally _-desig..
nated .6, is formed. This socket extends ‘through
vide an ‘improved cutter vchain.v Another object
is to provide an improved socket arrangement ror
achain block of a cutter .chainwhereby cutter
theblockilug at right angles to the path-of travel
of the cutterchain and extending longitudinally
of the lug and opening into this socket are lusual
bits of different typesmay'be positioned andheld
in .the vblocksockets. .A vfurther object is {to pro~ 10
threaded bores '8 adapted selectively to receive
vide van improved chain .block designed inter.
a conventional set screw 8. Evidently, the im
changeably to receive a .detachable holder for ‘a
proved socket arrangement may be embodied ‘in
small plural pointed reversible cutter .bit or the
cutter chains of types other than that disclosed.
shank'of a standard single pointed shanked bit.
yet another ‘object is to provide an improved bit 15 The improvedchain block socket v6 is adapted
interchangeably to receiveia holder .9 for a small
wsocket arrangement adapted to receive portions
plural pointed reversible cutterbit H) or a shank
.ofcutterbits of different widths while providing
.IA .of .a standard single pointed shanked .bit 12.
.a'dequate support .for the same. A still ‘further
As clearly shown in Fig. 5, the block socket is
objectis to ‘provide an improved chain block
socket shaped .to receive interchangeably the in. 20 generally rectangular in shape in cross section
andhas parallel plane vfront and rear end walls
active cutting portion .of a small plural pointed
l3 ‘and 1.4 and is centrally laterally enlarged at
reversible cutter bit or the shank of .a standard
single pointed cutterbit, and having projections
which serve properly to position the standard bit
shank. .Still another object is to provide .an
improved chain block socket having relatively
large "flow passages for dirt andicuttings thereby
to reduce the possibility of clogging and sticking
of the parts received in the socket. T ‘Other objects
and advantages of the invention will, however,
hereinafter more fully appear.
In the accompanying drawing there ,is shown
for purposesof illustration one form which the
invention may assume in practice.
vIn this drawing: '
'
25
15. 'Ihesocket enlargement has curved side walls
[5,16 which terminate at projections H,.eXtend—
ing inwardly ,from the parallel vertical side walls
18, l?of the ‘socket. This arrangement provides
enlarged end‘ recesses J9 between the projections
llandend-so-cket wallsateach end of the socket.
Theiprojections .l]. have parallel plane .inner__sur»
‘faces 20. This socket may be formed in various
manners but is herein ‘preferably formed by .dlfill
ing and broaching operations of well-known
types. The threaded bores .‘I extend longitudi
nallythrough the parallel end .walls 13, ,Hlof the
socket so that the set screw received in .one .of
'
' Fig. 1 is a side .elevational view, with ;parts
the bores may be adjusted to enter at its inner
broken .away in section, of a fportionof .a cutter
chain constructed in accordance with an illustra
end the socket.
tive embodiment of the invention.
’
Fig. 2115 ‘a cross sectional view taken substan.
tially on line 2—2 of Fig. 1, looking toward the
frontof the chain block.
Fig. 3 is a ‘view in longitudinal vertical section
taken substantially on line 3—3 of Fig. 42. -' '
' '
The cutter bit has .a-body generally T-shaped
incross section and provided with relatively ‘1n
olined cutting portions having front cut-ting
faces 2|, 2| lying in the sides of an obtuse angle
and terminating in cutting points 22 at the op
posite extremities of the bit. The bit holder 9
has a shank .23 generally rectangular in shape
45 incross section and is vertically slotted at 24 at
Fig. 4 is a horizontal sectional view taken sub
its yforward sideto receive the rear flange 25 of
the T-‘shaped bit body. The forward surfaces ,26
of the bit holder at the opposite sides of the ver
ing the improved block socket;
tical slot 724 engage the rear surfaces of the
Fig. 6 :is a perspective View of a small ‘plural
50 lateral ?anges 2] provided by the head of the
pointed reversible cutter bit.
‘
stantially on line 4.—4 of Fig. 3.
I
‘
Fig-51s an enlarged cross sectional view, show:
T. As shown in Fig. 3, the "bottom wall 28 of the
holder slot is shaped to conform to the curved
rearsurface 29 of the ?ange 25 of the bit body.
Fig. .8 is atop plan view of the ;bit holder.
When the holder shank is inserted in bit holding
Fig. 9 .isa view in longitudinal vertical section,
similar to Fig. 3, showing a standard. single 65 position in thelblOCk socket as shown in Fig. 3,
the rear surface of the holder shank engages
pointed shanked cutter bit in the block socket.
the ‘rear socket wall l4 and the head 30 of the
Fig. 10 is a horizontal sectional view taken sub
holder rests at 31 against the outer surface .of
stantially on line _|ll—l0 of Fig. 9.
the chain lblock lug. When the cutter ,bit is posi
In this illustrative embodiment of the inven
tioned as shown in Fig. 3, its active cutting por~
tion there is shown a cutter chain generally of
Fig. 7 is a side elevational .view of the cutter
bit holder.
’
'
'
2,418,585
4
3
tion projects forwardly and outwardly with re
form of the same is shown for purposes of 11
lustration, and that the invention may be modi
?ed and embodied in various‘ other forms with
out departing from its spirit or the scope of the
spect to the chain block and its inactive cutting
portion lies'. inwardly within the block socket.
Since the lateral ?anges 21 of the cutter bit.
project outwardly to provide a front cutting face
appended claims.
of a width substantially wider than the Width of
the shank I I of a standard single pointed bit, the
end socket enlargement I9 is provided, and the
Letters Patent is:
side ?anges of the inactive cutting portion of the
provided with a relatively wide portion and a com
What we claim as new and desire to secure by
1. In a cutter chain, a support having a socket
bit are received in this enlarged recess in the 10 municating relatively narrow portion having in
manner shown in Fig. 4. When the parts are so
ner lateral surfaces spaced longitudinally of said
positioned, the set screw 8 is adjusted into a
support with respect to said wide portion, a cut
position wherein its inner end engages the front
ter bit having a relatively wide cutting portion
face of the inactive cutting portion of the bit to
clamp the bit ?anges 21 tightly against the front
received in said wide portion of said socket, and a
detachable holder engaging said bit for holding
the latter in cutting position on said support with
surace of the holder. Thus the bit and holder
are held ?rmly in position on the block.
said relatively wide portion in said socket, and
' Upon removal of the cutter bit and. holder,
shown in Fig. 3, from the block socket, the shank
II of a standard single pointed reversible bit I2 20
may be inserted in the socket in the manner
shown in Fig. 9. The rear surface of the bit
shank I I abuts the rear end wall I4 of the socket
and the set screw 8, when tightened, engages
the front surface of the bit shank to secure 25
?rmly the cutter bit in cutting position on the
block. Since the shank of the standard single
pointed bit is of less width than the width of
the cutting face of a small plural pointed re
versible cutter bit, the projections I‘! are pro 30
vided to engage the sides of the bit shank II in
the manner shown in Fig. 10 so that any sub
stantial looseness of the shank in the socket is
prevented.
Regardless of whether the small plural pointed
35
reversible cutter bit or the shank of the standard
single pointed bit is positioned in the block socket,
the parts may be reversed on the block so that
the chain may operate as a reversible chain.
Upon such reversal of the parts, the set screw
8 is removed from its threaded bore in the block
lug and is inserted in the other threaded bore.
The reversal of the parts shown in Fig. 3 is ef
fected simply by loosening the set screw, removing
the bit and holder from the block socket, turning
the bit and holder completely around, and rein
serting them into the block socket. The reversed
set screw is then tightened to clamp the bit and
holder firmly in position. The standard single
pointed shanked bit shown in Fig. 9 may be re- r
versed simply by loosening the set screw, with
drawing the bit shank from the socket, turning
the bit completely around, and reinserting the bit
shank into the socket.
The reversed set screw
is then tightened to clamp the bit shank ?rmly
in position.
'
'
As a result of this invention, simply by the re
. shaping of the chain block socket it is possible
to position different types of cutter bits on the
chain block. By the provision of the novel socket
shape having an end enlargement and side pro
jections, it is possible interchangeably to posi
tion the holder of a small plural pointed re
versible cutter bit or the shank of a standard
single pointed cutter bit in the chain block socket.
The ‘socket arrangement is relatively simple so
that the socket of a standard chain'block may
be easily modi?ed to receive either the detach
able cutter bit holder or the standard shanked
bit. Other advantages of the invention will be
clearly apparent to those skilled in the art.
While there is in this application speci?cally
described one form which the invention may
assume in practice, it will be understood that this
having a relatively narrow portion received in
said narrow portion of said socket with the inner
lateral surfaces of the latter engaging the outer
most lateral surfaces of said narrow holder por
tion.
2. In a cutter chain, a support having a socket
provided with a relatively wide front portion and
a relatively narrow portion located rearwardly of
said front portion and having inner lateral sur
faces, a cutter bit provided with a relatively wide
front cutting portion and a relatively narrow
rearward portion, said wide bit portion received
in said wide portion of said socket and said nar
row rearward bit portion projecting into said nar
row socket portion, and a detachable holder for
holding said bit in cutting position on said sup
port and having a socket for receiving said narrow
rearward portion of said bit, and having a shank
?tting said narrow portion of said support socket
with the inner lateral surfaces of the latter en
gaging with the outermost lateral surfaces of
said holder shank.
3. In a cutter chain, a support having a socket
provided with a relatively wide portion and a
communicating relatively narrow portion having
lateral surfaces spaced inwardly from the sides
of said wide portion, said narrow portion being
spaced longitudinally of said support with re
spect to said wide portion, a cutter bit having a
relatively wide cutting portion received in said
wide socket portion, and a detachable holder en
gaging said bit for holding the latter in cutting
position on said support, said holder engaging
said bit rearwardly of said Wide cutting portion
and having a relatively narrow portion received
in said narrow socket portion with the inner lat
eral surfaces of the latter engaging the outer
most lateral surfaces of said narrow holder por
tion.
‘I. In a cutter chain, a support having a socket
provided with a relatively wide front portion and
a relatively narrow portion located rearwardly of
said‘ front portion and having lateral surfaces
‘spaced inwardly from the sides of said front por
tion, a cutter bit having a front cutting portion
received in said wide socket portion, said bit pro
jecting rearwardlylinto said narrow socket por
tion, and a. detachable holder for holding said
bit in cutting position on said support and en
gaging and positioning said rearwardly project-v
ing portion of said bit, and having a shank re
ceived in said narrow socket portion with the
inner lateral surfaces of the latter engaging the
outermost lateral surfaces of said holder shank.
LEON E. SIMMONS.
HARRY H.,VANDERZEE'.
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