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Патент USA US2121044

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Julie 21, 1938.
W. NOBLE
CUTTER CHAiN
Filed Nov. 27, 1934'
, 2,121,044
2 Sheets-‘Sheet 1
June 21, 1938.
-W,NOBLEQ
;
2,121,044 1
CUTTER CHAIN
Filed Nov. 27, 1934'
2 Sheets-Sheet 2
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2,121,044‘
Patented June 21. 1938 '_
, < "UNITED'STA'I‘QES‘ ‘PATENT
OFFICE
“12,121,044
CUTTER CHAIN
WarrenNoble, Michigan City, ‘Indgassignor to
' Sullivan Machinery Company, a corporation of‘
Massachusetts.
7
_
Application November>27 , ‘1934, Serial No. 755,013
a
22 "Claims.
(or. ‘2262-933X
_
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Figs.“ 14 and 15 are side and end elevational
1 'I'hisinvention relates to cutter'chains, ‘and.
viewsrespectively, of the bit clamping element.
more particularly‘ to improvements in a cutter
_fIn the illustrative embodiment of the inven
chain especially designed. to use with ‘a cutter
tiondisclosed in Figs. 1 to 7, inclusivesthere is
shown a bit block La series of which are adapted
improved’ mining machine ‘cutter ‘chain. -An .to be pivotally connected together in end to end
other. object is to- provide an’ improved cutter relation by suitable strap links or‘otherwise to
chain having improved cutter bit positioning and form ‘an endless cutter chain ma wellkno-wn
holding means. Yet another object‘ is to ‘provide manner. Formed integralwiththe bit block I
an improved cutter bit‘ Wherebmdue to its par- ‘ is a projecting boss or'lug 2 having a longitudinal 10
ticular design, relatively long life is-insured, the. a bore 3- formed with its: interior periphery _ser»‘
bit being of such shapev as to possess-betterheat r‘atedatA‘.L Mounted in this bore 3 is the cylin
- bar of a coal mining‘ machine. ‘
"
An objecto-f thisinventio-n isqto provide an
distribution: qualities. ‘A still‘ further object is . drical shank S‘of a bit positioning and sup
.to provide an improved mounting means for'a' ’ porting element 6, the exterior periphery of the
shank Efbeing formed with longitudinal‘ teeth 15
engageable ‘with the serrations formed in the
wallsoi'thebore 3 for-locking the shankagainst
angular displacement within‘the lug bore. As
illustrated, the shank 5 isaxially bored at 1 to
'receivefthebolt-like body portion» 8 of a bit
1Y5 cuttenbit of the abovercharacter’ whereby the
bit may be supported in different‘"angularly~re-v
.lated positions withrespect to the bit block‘. Yet
another object is to provide
improvedreversi
blebit block structure with'w'hich‘the improved
bit holding and adjusting. means? is associated,
' whereby, by turning the holding and " adjusting
clamping element 9;‘ The rear end‘ of this bolt
‘ 3. improved cutter chainwill, however, hereinafter
‘25 more fully appear as the descriptionproceedsnfl
grooved ‘at l.2-?to receive a snap ring l3 for pre
venting inadvertent‘ release ‘of the nut ‘H ‘from
meansend for end Withrespect‘to ‘the'bit block, portion is threadedfat ID to» receive a tightening
the cutter chain‘ may operate in, either direction. ' nut ll- engageable ‘with the rear-surface of the.
‘These and other'objectsliand advantages of the lug 2. vThe bolt portion 8 is preferably'annularly
In the accompanying drawings there are shown
for purposes‘ of illustration two forms which the
invention may assume in practice.
.
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.36
a‘ ~
In
Fig.these
1- is drawings,—:—
a side elevational
; ‘view
'
of,
' one~ illus-
the'bolth‘“
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v
5
.
v
The improved‘ cutterbit I4, as shown‘ in Figs. ‘
3 and -7,‘ is of the so-called detachable type and
preferably‘in the form of a stamping pressed to
> ‘the desired shape‘ and hardened ,to attain‘ rela
. tively great wearing qualities, and is,-ln‘ this in- ‘
trative form'of the improved cutterchainstr'uc
stanca'preferably of V'-shaped cross section ha'v-'
ingjits end cutting faces l5 lying in the plane
‘ Fig. 2 is an end elevational viewof thecutter
‘ sides of a'right-angledi dihedral angleto- provide ‘
.cuttingportions‘at the opposite bit ends. The‘35
chain
Fig. structure
3 is av view
shown
in. longitudinalisection
in Fig. 1. 1 _
l . taken
end portions [6 of the bit are vinwardly bentyas
substantially
. Fig. 4 is a on
cross'sectionalview
line‘ 3-3 of “Fig.2..
taken on line
14,-4 of Fig. 1.
in
"
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7.;
g
5 is a perspective viewfof “the: bit clamp
element.
‘
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.7
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f
‘
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f
“
45 _i Fig. 8 ‘is a view similar to Fig. l'showing a
modi?ed form of constructioni ..
1
one'cutting- point becomes dull, the bit maybe
therebyito present afresh cutting point to‘ the
'ing
Fig.
and7 supporting
is a perspectiveviewof
element. . '
the]_improved
4
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cutterbit,
strength at‘ the cutting‘ point. It will. thus be ;
seen that the cutter bit is reversible so that when
turned end for? end relative to its holding means,
Fig. 6 is a perspective viewof the-bit position
'
shown in‘ Fig.‘ '3, to’vv lobtain ‘relatively great
'
Fig. 9 is an end‘elevational ‘View puns cutter
‘ chain
Fig. structure'shown
170 isja view ‘in "longitudinal
in Fig.
section'taken
Hf
Work. The bit is of ‘a relatively inexpensive de
fsi'gnr,.and when 'both- cutting points become ‘dull,
it may be discarded ‘and replaced by a new'bit.
45
The bit positioning and supporting element 6
is provided with"a“po=rtion l1 'projecting'ior
wardly'a‘nd‘ outwardly from its shank 5 andjof
tapering shape to provide ample support for the
rearward portion of the bit‘ body, and formed 50
in. its ‘front face with an inclined ortapering
*socket l 8 of V-sh'ape, within which the outer con
||-|'| of Fig. 8.‘
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Figs._ 12 and 13 are side and end'elevational tour of the bitbody is'adapted to ?tj Formed
a ‘substantially
on>linefl0—-‘l0 of-Fig. v9. ,_
f ' it
>
Fig. 11 is a detail sectional ‘View taken o'n‘jnne
views respectively, of the bit.‘ positioning and
supporting
element.
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.
.
.1
on the clamping-elementt is a forward ‘and out
‘~ Ward‘projection-i191“ of V-shaped [cross section 55
2
2,121,044
shaped to ?t the inner contour of the bit, the l to the bit block. The toothed shank of the ele
ment 26 is then again inserted within the ser
of the forward surface of the bit body and co
rated bore 24, the bit placed in position between
operating with the portion I‘! of the supporting the assembled elements 26 and 32, as shown in
projection l9 engaging the intermediate portion
element to form an inter?tting clamp in which
the bit is ?rmly held. The elements I‘! and I9
of the bit holding and supporting means are of
such shape as to provide ample clearance for the
cutting portion of the bit.
These elements, in
10 certain instances, may be composed of cop-per or
metals having similar heat conducting character—
istics for preventing concentration of heat at the
cutting point of the bit, resulting in longer bit
Fig. 10, and the nut 23 thereafter rotated to bring
the cylindrical projection 30 thereof Within the
rear lug bore 23 and to clamp the parts ?rmly to
gether. It will thus be seen that the cutter bit
may be ?rmly held in position on the bit block
and may be‘ adjusted, as in the form of the in 10
vention above described, intodi?erent angularly
related positions with respect to the bit block to
vobtain “lacing” of the bits.
life. By the provision of the serrations within
It will be noted that in both forms of the in
the longitudinal bore 3 and the teeth out on the vention the bit positioning and holding struc 15
shank of the element 6, it is possible to adjust "ture may ‘be turned end for end with respect to
the bit supporting structure into different angu
the bit block, thereby to attain ready reversal of
larly related positions with'respect to the-bit block, ‘the-cutter bits in the chain, the bit blocks be
lug, as shown in Fig. 2, thereby to obtain “lac } ing symmetrical in form so that the bit holding
ing” of the bits of the chain without the use of structure may be supported in either position. 20
a large number of- bit] blocks of diiferent shape, Also ine'either» ‘form of v:the‘invention the cutter
it being noted that in thisimproved construc
bit may have its walls longitudinally corrugated
tion'but a single bit block pattern is needed to ‘ to obtain great rigidity in a bit of relatively ‘thin
provide for all necessary bit positions. ,It will
25 be evident, moreover, that the cutter, bit may
be ?rmly held in position on the bit block,
vIn the modi?ed'form of constructionshown in
Figs. 8 to 15, inclusive, there‘is shown a bit block
23~having longitudinally spaced lugs Hand 22
30 having alined bores '23 and 24 respectively, these
bores having their inner peripheries serrated at
25. Arranged in the space between these two
projecting lugs is ‘a bit'supporting and position!
ing element 26‘ having a forwardly projecting
35 shank 21 extending within the bore "24 inthe
lug 22' and‘ having external teeth 28 engageable
with the bore serrations for locking» the shank
21 against angular movement within thefbit
block’ lug.’ Engageable with the forward'surface
of the rear lug 2| is an adjusting nut-29 having
a circular projection 30 projecting within the
lugged'bore 23 and having a smooth exterior sur
face of a, diameter just permitting it to pass into
‘the serrated bore. Threadedly engaging :_-the nut
29 is a bolt portion 3| of a bit clamping element
32. 7 ‘As shown in Fig. 11, the »member 26 has-lat
eral projections 33, 33 engaging ledges 734,,- 34
formed on- the member 32 for preventing angu
lar outward tilting movement of the member 32
50 with respect to the member 26 and bitblocklug.
Clamped between the members 26~ and 32 is a
cutter bit ,35 of the same general design-as that
shown in Fig. '7, although in'this particular in
stance of somewhat greater length.» 'Thenmeme
ber 32 has a bit supportingportion 3'! tapering
structure, and furtherthe gripping walls ofthe
cooperating vclamping elements may be rough ,25
ened or‘serrated' to provide a better grip onthe
bitp-In-certain instances the V-slot of the bit
mayv be ‘?lled with copper to further, improve the
heat distribution ,of the bit; ‘ These. and other
uses and advantages of the improved cutter chain v30
will be clearly'apparent to‘ those ‘skilled in the'art.
While there are in this application speci?cally
described two forms‘ which the'inventionmay as
surne in practice, it will be understood that these
forms of the'same are shown for. purposes (of :illus .35
tration and that the'hinventi'on may be'further
modi?ed andembodired “in various other forms
without -';departing"1from its spirit or the'j’scop'e
of the Vappende'd‘claims.
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What I claim aslnew'land‘des'ire to secure by
Letters Patent is:'
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> 1. .A cutter bit having a ‘straight body of 'V
' shaped cross section and having at ‘its opposite
ends inwardly bent‘butting portions.
.2. A ‘cutter ibit having, a straight body and 45
having itsopposite ends inwardly bent to "form
oppositely ‘inclined end cutting faces providing’
cutting ‘points at the same side of the bit body.
3. A cutter bit having‘ a straight body of WV!
shaped cross section, and‘op'positely inclined end .59
cuttingfaces providinglcutting points at the same '
side-of the bit body, the bit body at the bit points
being inwardly bent.
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4; In a cutter chain, , a series of _ articulated
forwardly and outwardly and having a V-shaped ' bitblocks each bit block having a longitudinal
recess 38 in its forward face shaped to ?t the
bore, the inner'periphery of said bore. being ser
outer contour of the bit block, while the rearward
inclined portion of the member 26is-of y-shape
rated, a bit positioning and‘supporting element
having a toothed shank insertibl'e. in said bore,
?tting clamp within which the bit bod'yis‘?rmly
gripped. As in the form of the invention above
to ?t the inner contour of the bit body, and- these 1 and a bit, holding element cooperating with said
positioning‘and supporting element and engaging
elements 26 and 32 cooperate to'form an inter
described, the projecting. elements of jthe ' bit
thebit for securing the ,bit in cuttingposition on
said positioning and ‘supporting element, the
toothed shanks being insertible in di?erent posi
holding and clamping elements may be composed
tions in different bit'block bores to obtain lacing
of. copper '‘ or similar metal to attain better heat
ofthe bits.
distribution
qualities.
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5. In a cutter c'hain,'a series of articulated bit
6.0
9.5
The cutter bit may be supported in different
‘angularly relatedpositions with respect to thebit
blocksimply'by rotating the nut 29 to move it
blocks each bit block having alongitudinal bore,
the inner periphery ofsaid bore being serrated,
a. bitpositioning andsupporting- element having
back (‘to the right in Fig. 110) along the bolt por
tion 3 i removing the element 32 and bit from
the bit block, withdrawing the toothed shank
from engagement with the serrated bore 24 of
the vfront lug and turning .the element 26 into-a
a toothed ‘shan'kjinsertible insaid bore, and a .
said bit positioning and supporting ‘element in
said bore and engaging ‘the bit for clamping the
bit,,in cutting position on said positioning and
di?erentangularly related position with respect,
supporting element, the toothed shanks being
cooperating bit clamping ‘element ‘for securing
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10
3 ,
2,121,044
ing element having a bolt-like body portionex
insertible in different positions in different bit
“block bores to obtain lacing of the bits.
6. In a cutter chain, a bit block having a
longitudinal bore, the inner periphery of said bore
“being serrated, a bit positioning and supporting
element having a toothed shank insertible in.
'said bore, and a cooperating bit clamping ele
‘ment for securing said. bit positioning and sup
porting element in said bore, said toothed shank
' i 13. In a cutter chain, a bit block having a bore,
' av cutter bit . holder‘ for holding a cutter-bit in
having an axial bore and said clamping element
having a bolt-like portion projecting through said
tending through said tubular shank,'and an‘inte
jaxial bore.
‘
~ '7. In a cutter chain, a bit block having a longi
' tudinal bore, the inner periphery of said bore
being serrated, a bit positioning and supporting
element having a toothed shank insertible in said
bore, ‘and a cooperating bit clamping element
for securing said bit positioning and supporting
element in said bore, said toothed shank having
20 an axial bore and said clamping element having
a bolt-like portion projecting through said axial
bore, said bolt-like portion being threaded to re
ceive a tightening nut.
'
8. In a cutter chain, a bit block having longi
25 tudinally spaced lugs, said lugs having alined
bores, the internal peripheries of said bores being
serrated, a bit positioning and supporting element
having a toothed shank insertible within the bore
in the front lug, a bit clamping element, and an
30 adjusting element cooperating with said'clamping
element and having a portion projecting within
the bore in the rear lug.
9. In a cutter chain, a bit block having longi
tudinally spaced lugs,v said lugs having alined
35 bores, a double-ended reversible cutter bit, and a
bit holding and positioning means supported
within the lug bores and providing an obliquely
inclined socket for receiving the cutter bit for
supporting the bit in an inclined position with
40 its active cutting end projecting outwardly and
forwardly from the bit block a substantial dis
tance in advance of its inactive cutting end, said
bit holding and positioning means adjustable
relative to the bit block to move said cutter bit
45 into different angularly related cuttingpositions,
an element of said bit holding and positioning
' means ‘having a locating portion engageable with
locating portions formed within the inner pe
tending through said tubular shank, and anvinte
gral forwardly projecting portion shaped to en
gage a-‘cutte'r bit in said socket.‘
position on said‘block including asup'port element
having a bitreceiving socket and a tubular shank
insertible in said bit block bore, and a'bit clamp
ing element‘ having a bolt-like body portion ex-V
gral forwardly projecting portion shaped toen
gage a cutter bit in‘said socket, said bolt-like por- '
tion having a threaded end'projecting through
said tubular shank and a clamping nut threaded 15
thereon.
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l4. In'a cutter bit and holder, a cutter bit hav
ing a body of V'-shaped‘cross section,"a bit posi
tioning and holding element having a V-shaped
socket for receiving the bit body, and an integral 20
tubular shank, a. bit clamping element for clamp,
ing the bit within said socket having a bolt-like
portion projecting through said tubular shank,
and an integral V-shaped projection adapted to
fit within the bit body, said bolt-like‘ portion hav 25
ing a threaded end projecting through said tubu
lar shank and a clamping nut threaded thereon.
15. In a cutter chain, a bit block having ‘a
lateral lug formed with a longitudinal bore, a bit
holder having a tubular shank received in said 30
lugvbore, and a ‘bit clamp having a body portion
projecting through said tubular shank.
'
16. In a cutter chain, a bit‘ block having a
lateral lug formed with a longitudinal bore, a bit
holder having a tubular shank received in said lug 35
bore, a bit clamp having a body portion project
ing through said tubular shank, and means co-'
operating with said clamp body portion and said
lug for clamping said bit holder in the lug bore.
17. In a cutter chain, a series of articulated bit 40
blocks each bit block having a longitudinal bore,’
the inner periphery of said bore formed with look
ing surfaces, and means for positioning and sup
porting the cutter bits in di?erent positions on
different blocks including bit clamps for sup 45
porting the bits independently of bit engagement
with the blocks, said clamps each having a 'posi
tioning and supporting element providedwith a
said angularly related cutting positions.
shank insertible in a block bore and having lock-‘
ing, surfaces engaging the block bore locking sur 50
faces for locking the shanks against rotation in
the bore, the shanks of said elements insertible in,
10. In a cutter chain, a chain block having
a bit lug, said lug having a bore, a cutter bit
obtain lacing of the bits on the chain.
' riphery of the bore of the .front lug, said bit re
50 versible end for end with respect to said hold
ing and positioning means in any of afore
55 holder including a support element having ‘a bit
receiving socket and a tubular‘ shank, said shank
receivable in said lug bore, ‘and a bit clamping
~ element having a bolt-like body portion extend
ing through said tubular shank and an integral
60 forwardly projecting portion shaped to fit the
forward surface of a cutter bit.
_
11. In a cutter bit and bit holder, a cutter bit
having a body of V-shaped cross section, a bit
positioning and holding element having a V
65 shaped socket for receiving the bit body and a
tubular shank, and a bit clamping element for
clamping the bit within said socket having a bolt
like portion projecting through said tubular
shank and an integral V-shaped projection adapt
different positions in different bit block bores‘to '
I
I
18. In a cutter chain, a series of articulated 55
bit blocks each ‘bit block having a longitudinal
bore, the inner periphery of said bore formed with
looking surfaces, and means for positioning and
supporting the cutter bits in different positions
on different blocks including bit clamps for sup
porting the bits independently of bit engagement
with the blocks, said clamps each having a posi
tioning and supporting element provided with a.
shank insertible in a block bore and having look
ing surfaces engaging the block bore locking sur 65
faces for locking the shanks against rotation in
the bore, the shanks of' said elements insertible
in different positions in different bit block bores
to obtain lacing of the bits on the chain, said
clamps also including a bit clamping element co 70
,
70 ed to ?t within the bit body. .
12. In a cutter chain, a bit block having a bore, operating with said' positioning and supporting
element for securing said positioning and sup-,
a cutter bit holder for holding a cutter bit in posi
'
‘ p
tion on said block including a support element porting element in a block bore.
19. A bit clamp comprising a clamping element
having a bit receiving socket and a tubular shank
having a bolt-like body portion and an integral 75
75 insertible in said bit block bore, and a bit clamp- I
'
2,121,044
lforwa-rdly projecting portion V-‘shaped to fit the
ing a bolt-like body portion extending through
forward surface of a?cutter of V-shaped cross
section, and a cooperating clamp element having
a tubular shank for receiving said bolt-like body
portion and having a V-shaped slot for receiving
the rearward surface of the cutter bit.
20. In a cutter bit holder, a support element
having a bit receiving socket of V-shape for re
ceiving the V-shaped body of a cutter bit, and
10 a tubular shank, and a bit clamping element hav
said tubular shank and an integral forwardly pro
jecting portion 'V-shaped to engage the cutter-bit
ing 'a bolt-like body portion extending through
said tubular shank and an integral forwardly pro
in said socket, said bolt-like body portion having
a threaded end projecting through said tubular 5
shank and a clamping nut threaded thereon.
22.'In a cutter chain, a chain block having
a bit lug, said lug having a socket, a bit ‘posi
tioning and holding element having a tubular
shank receivable in said lug socket, and a bit
clamp having a portion receivable and movable
axially in said tubular shank, and means for move
jecting V-shaped portion shaped to engage the
ing said clamp portion axially relative to ‘said
cutter bit in said socket.
21. In a cutter bit holder, a support element
having a bit receiving socket of V-shape for re
ceiving the V-shaped body of a cutter bit, and a
tubular shank to clamp a cutter bit in cutting
position on said bit positioning and holding ele 15
tubular shank, and a bit clamping element hav
ment.
1
WARREN NOBLE.
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