Патент USA US2121044код для вставки
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 'I \" n / /” " r 577 V 27 '5 Z0 " - 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 _ " - 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. . c .36 a‘ ~ In Fig.these 1- is drawings,—:— a side elevational ; ‘view ' of, ' one~ illus- the'bolth‘“ > - 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 " Tj' ' a‘ 7.; g 5 is a perspective viewfof “the: bit clamp element. ‘ " .7 , f ‘ " “ 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 ' ' 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.‘ " ‘ ' I '1' 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. ' . . .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. ' " What I claim aslnew'land‘des'ire to secure by Letters Patent is:' 9 ' ' ' > 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. _, _ , r v‘ 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. . - ‘ .7 ~ ». . J. ' ' 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 ' 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. ‘ ‘ H - ' ' , 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.