Патент USA US2387285код для вставки
Patented Oct. 23,y 1945 ¿381,285 UNITED STATES `P.ß.T.l=:.-NT oFFlcs 2,387,285 CUTTER CHAIN Charles F. Osgood, Claremont, H., assignor to Sullivan Machinery Company, a corporationof Massachusetts Application November 1, 1940, Serial No. l363,924 18 Claims. This invention relates to kerf-cutting means, and more particularly to improvements in cutter (Cl. 26,2.-3‘3) ' showing another modified form 'of the invention. Fig. 9 is a sectional view, similar to Fig. 3, chains especially designed for use in the cutting showing still another modified form of the inof kerfs in coal and embodying improved sup vention. ` ¿ portingiand holding means for the cutter bits.` In the several' embodiments of the invention An object ofthe present invention is to provide disclosed herein, the improved cutter Abit holder is lan improved kerf-cutting means. Another ob associated with va standard Vcutter chain vof the ject is Jto provide an improved cutter chain espe type especially designed for use'in the cutting'l of cially designed for use in the cutting of kerfs in kerfs -in coal. The cutter chain' consists of a coal. A further object is to provide an improved 10 series of chain blocks i >pivotally- connected 'to supporting and holding means for the cutter bits gether -by strap links 2, and each chain block of a cutterrchain. Yet another object is to pro has a socketV 3 arranged at right angles to the vide Van improved cutter bit holder. A still fur path of travel ofjth'e- cutter chain. The block ther object is to provide an improved cutter -bit . socket is preferably generally rectangular in cross holder for a cutter bit of the double-ended, re section 'and at its inner end opens into a, trans versible type, commonly known as a “throw verse opening îd. .'The chain ‘block is threaded away” bit. Still another object is to provide an at" 5 for thev reception of a standard set screw 6.' improved cutter'bit holder adapted to use in a The improved V’bit holder, in the embodiment chain block of a standard cutter chain. >Yet an of the inventi‘on'shown in Figs. 1 to 6, inclusive, other object is to provide an improved detachable 20, ‘is generally designated ‘l and has a head 8 >and ' lbit holder having a pivoted bit holder part for an integral `shank 9, the latter being of rectan holding 'the cutterbit in cutting position in the gular cross4 section for reception ‘in the chain holder. Still another object is to provide an im proved detachable bit holder having a pivoted bit holder part engageable with an exterior surface block socket 3. Extending .obliquely through the holder headvis a socket l0, herein vpreferably of polygonal 'cross' section, adapted-to receive a cut' of a 'chain block wholly outside of the block sock-l 2,5 ter bit, generally designated! I, of a convention-l et 'for holding a cutter bit in cutting position in al design. 'l Secured within the holderfhe'ad and the holder. Still another object is to provide an traversing' the bit-re'ceiving'sooket is a hardened improved bit‘holder comprising a pair of cooper metal -cross ypin l2, and `pivotally mounted on ating Ahinged holder parts. A further object is 30 projecting ends yoi“ this pin are the side arms I3 to e provide an'improved cutter bit holder which ofy a front h'older'par't l4,'hereinin the form of is simple Vin design and rugged in construction. a bit clamp, Aand> thefsides of the holder. head are Other objects and advantages of the invention . preferably cut away at l5 to receive the side will, however, hereinafter more fully `appear in arms i3, in themanner shown. The ends of the the course of the ensuing description. cross pin are preferably'headed or peene'd. over In the accompanying drawing there are shown to retain‘th'e side arms of the hinged front hold for purposes of illustration several forms which er partin position thereon. l » the invention may assume in practice. The' cutter bit lh’shownmost clearly in Figs. 3 In this drawing: andY 4, may be of, the same general type as that Fig. 1 is a side elevational view of -a cutter .40 'shown .inthe'patent to Ross 2,020,215, although chain with which an illustrative embodiment of the bit shaDëL may assumevarious >conventional the invention is associated. Fig. 2 is across sectional view taken on line forms'without departing ‘from the spirit of the invention. A'Ifhecutter bit disclosed herein isof 2-2 of Fig. 1. triangularpsliape iniside elevation and of Vpolyg Fig. 3 is a view in central longitudinal section 45 ona'l' cross _section and'has plane cuttingfaces ltaken on line 3_3 ‘of Fig. 2. I6, t6' formed, _so tO speak, one at each'of the Fig. 4 is a detail sectional view taken substan equal sidesof the triangle; andthe cutting faces”, tially on line 4-4 of Fig. 1. at lthe,extremities of the `cutter bit, ~t'err'ninate Fig. 5 is a detail sectional view taken substan in cutting points l1, l1. ",I‘he> plane cutting faces tially on line 5-5 of Fig. 1. 50 I6, I‘B A.are 4of elongated diamond shapeand are Fig. 6 is a perspective view of the improved individually symmetrical as to, both major and bit holder. Fig. 7 is' a sectional view, similar to Fig. 3, showing a modified form of the invention. minor axial lines’. This cutter bit is. of the'gso called> ‘.‘throw-away” ¿type Jand, when yboth cut-> tingpcints‘ become dull, may be discarded due ' 'Fig'. 8 is a sectional view, similar to Fig. 3, 55 to its extremely inespensive design. l L @387,285 43 receivable in the bit notch to hom the cutter Th‘e cutter bit is insertible in the socket I0 óf bit against endwise displacement from the hold the holder head with its -inner, inactive cutting er. The rear curved surface of the cutter bit is face resting against the cross pin I2. The cross seated within a recess 44 at the forward side of pin therefore serves two purposes in that it acts both as an abutment for the cutter bit and a 5 the holder h‘ead. When the set screw is tight front holder part I4 has a surface I8 engageable with the inner portion of the active cutting face ened, the holder shank 42’ is forced inwardly within the chain block socket and the pivoted front holder part, due to its engagement with holder head socket, and is swingable inwardly out has a surface 52'engag`e`able w'ith'the inner por- . pivot for the front holder part I4. The pivoted of the cutterbitiand a surface I9 ,engageableîwith- ’ the exteriorv surface of theïchain block,v engages the exterior- surface 20 of the chain block outside' 1 the cutter bit-Withïits portion 43 received4 in the bit notch 39, so that the cutter bit is firmly held of the block socket. >in cutting position within its recess 44 in the When the holder shank 9 is inserted in th'e holder h'ead. In Fig. 9 a bit-receiving socket 45 chain block socket 3, the surface I9 of >the hinged extends obliquely completely through the holder front holder part I4 engages the exterior block . head. 46, so that the rear, inactive cutting end of surface 2D, so that upon further insertive move a cutter bit, generally designated 41, extends ment 0f the holder shank in the block socket, the . rearwardly through the socket into engagement surface I8 of the front holder part engages the with the> exterior surface of the chain block at inner portion of the active front cutting face of the rear side of the block socket. The cutter bit, the cutter bit to hold the latter in cutting posi in this'in'st'ance, is of trapezoidal shape in side tion in the holder head socket with its inner,_in elevation ,and has relatively inclined plane cut active cutting face ,resting firmly against 4the ting facesj48,`148, lying in the sides of a dihedral c?osslpi? I2. Thesetscrew 6 is'then adjusted angleV and terminating in cuttingpoints 49, 49 at . intoefr'lëagelne'nt'with' the holder shank for firmly theopposite extremities' of the _cutter bit. Thesecuring theY holder in position onA the chain cutter» bit' 'has its" active'jcutting point project block. It is accordingly evident that the hinged ing `fo‘rw'ar¢îlly'_V and i outwardly :from the holder front holder part I4 is swingable outwardly into head socket, 'and the pivoted'. front holder part A engagementwith the front 'cutting face of the â'iILÁwhich> is hinged" at "5I >on the' holder head, bit to' prevent exit ofthe _cutter'bit from the of engagement with the cutter bit to permit for 30 „tion of the active cutting `face`of the bit, Yto pre vent forward exit of the'bitffrom theY holder Ward‘endwise release’ ofthe bit from the holder socket." "The‘pivoted front clamp part has a sur face 53 'engageable With‘ the exterior surface ofî The several modified embodiments of the in head‘socket. " . " ' ` ` ' Y ' the chain' block at the forward side of the blockvention 'shown in Figs. '7; 8r and 9 are broadly similarto that described above; In these em '35,4 socket. 'The inner, inactive cutting facefof the V:cutter bit rests firmly against the exterior surface ` of thejchain block,> and ,when the ‘set screwis tightened _the holders-'bank 54 isïfo?cëd inwardly ' path'oftravel'of the cutter chain to enable the within the block socketv and,'due to the engage inner endof Vthe _set Vscrew to engage an'inclined surface 23.v on a, holder Vshank 24 so that when the 4Qqm`ent ofth‘e‘pivoted front holder part' with vthe setj’vjscrew .'is‘ tightened Vthe holder. sh'ank will Vbe ' “exterior Ysurfac'ebf thechain block,"'the surface 52' on'the h'older part'en'gages Vthe inner portion forcedl ìnwardly’within >the holder block socket. i bodiments, however, the 'set screw opening 2l in the chain block„22 vis' inclined with respect to the of the active cutting face of the bit to clamp the In Fig. 7 "a holderfhead 25 has a front'rècess‘ 26 foi-'receiving a' cutter bit, generally designated 21.`- „This cutter'bit is‘o'f trape'zoidal shape in side elevationfand' has cutting 'points 28, 28 at its op- i posite end'sf,',theseîpoints being formed 'atth'e'e'x tremitiesicfe. front plane, cutting' face 29,. >The pivot :pin 30 for'. a front holder part 3l, in this cutter bit firmly in Ycutting position. As in Figs'. *_'7 and' 8,_the 'cross pinjsecured within the holders. "'head’serves' only asa hinge pin. Also’i'n" these threemodiñed embodiments, the set screw when tightenedjefl’ects >automatic clamping 'of the cut terjbit‘ñrmly in‘rcutting position with.a`vise-like y instance,'_ does not' Vserve as a bit abutment, and 50 action',V since `insertive movement Vof 4the holderl shank 'within the block socket automaticallyI the' inner, ,inactive 'end'of‘the’ 'cutter bit 'engages ' effects' tightening Yof the front holder>> part; an abutment‘surface'32 on'the holder head. ' The'V Otherwise the embodiments' 'of the/invention " pivot -pin ~3Il‘is' secured within the holder h'ead. shown- in Figs. ’7, Sand 9 are similar to that and is’ spaced vrearwardly from` the Vfront bit- ’ abutment surface 32 in the' manner shown. The Y hinged‘front holder part 3l, _asin the form of the invention above described, serves as a bit clamp and has a surface 3.3 engageable-with the frontjbitface Y29 'and a 'surface v34 Vengageable with the’ exterior of ’theichain block. When the shown in Figs. Ito 6, incusive.V ' Í' As a result; of VVtlçiiginvention,_it will` be noted thatan improved ¿kerf-cutting..cutter` chain is provided> having improved cutter,~ bit supporting and holding’ means for firmly _ ,sii-moorting'> „and 60 holding aV cutter bit in cutting position` on a chain set screw’isitightened., theholder shank isÍforced block. jfItwill further benoted that by the pro`r-` inwardlywithin th'e _chain block socket and the pivoted front holder part, due to its engagement ing a hinged from;` holder part engageable with vision of the'improved‘cutter'bit holder embody against release from 'the holder‘head recess. In the exterior of the chain block wholly outside of therblocksocket, the >cutter bit is firmly `clamped in cutting position on the block.> It will further Fig. 8> thefcutter bit, generally. designated 35, is crescent shaped and h'as acurved rear surface 36 invention, .the cutter bit holderis of an extremely with the >exterior surfaceof‘the chain block, en gages the _cutter ibit to clamp‘theïcutter bit firmly and a plane 'front cutting face 31, the latter ter minating at _the opposite extremities of thebit in cutting points 38,V 3,8». „The forwardcutting face 31 of A,thebit is"- notched atV 39 midway lbetween thecutting points, and the pivoted front holder part 40,'which is pivoted. on a cross pin'4I se be noted that-„in the several'jembodiments ofthe simpleV and inexpensive design `4andÍn‘lay be used in astandard chain block__Other uses and' ad'-~ vantages of the invention 'will‘bercle‘arly appar-fv ent to those skilled in the art. . . _ WhileA there arein _this application specifically described'several f__orrnsY which the invention may ’ cured Within the'gholder head 42, hase. portion 75. assumeinpractice, ity/illnbeunderstood that ' assaggi; these >forms of the same are‘shown forfpurposes of :illustration >and that the invention. may :he chain -block :having ~ a, socket, of a- bitrholderl com embodied in f various» other: forms Withoutî depart erating Vto secure a cutter bit in cutting position on vsaid -block and means for pivotally-connect irigfrom its spirit or thefscope :of `the :appended prising pivotally connected holder parts coop ing said holder parts at the bit-*securing end of the holder, one of >said holder .parts having ‘a Letters Patent is: ' shank received in -said block socket and the other 1. A detachable cutter bit holder ladapted for holder part engageable at the end thereof remote mounting on a chain block of a-cutter chain, from ‘its pivot lwith'an exterior surface of said comprising a head and a shank, thev latter adapt 10 chain .block .Wholly outside of said block socket ed for reception in a chain block socketand said when the holder is 'in bit holding positon with head having afb-it-reoeiving socket, and a front respect to the block. > . ‘ holder 'parthingedly connected at one endfto Said y8. In a cutter chain, -thecombination .Withva claims. ' ' ' ' , - ' What -I .claim as 4new and desire to `secure 'by holder head at the outerend-of the Vholder and chain block having a socket, of'a bit holder com engageable at its o-ther end with a cutter vbit re 15 prising pi-votally connected holder-parts cooperat ceived in said head socket -for holding a cutter ing to hold'a cutter bit in> cutting position on the bit in cutting position within-said head socket. chain block, and means at .the outer end "of >the 2. A detachable cutter bit holder comprising .a holder for pivotally connecting said parts, one of head and a shank, said head having abit-receiv said parts having Ia shank receivable in said block ing socket, a front holder part »hinged tosaid socket and the other part disposed wholly outside holder head and having a surface engageable with of said'blockfsocket vand engageable at the end a cutter bit received in said socket for holdin-ga thereof remote from its pivot with an exterior cutter bit in cutting position within‘said socket, surface on the chain block when the holder vis and a cross p-in fixed within said holder head and in bit holding position with> respect toftherblock. traversing said socket, said pin serving as an 25 9. In a cutter chain, the .combination with a abutment for the inner end of `a cutter bitre chain'block having a socket, of a bit holder for ceived in said socket and also as a pivot for said holding a lcutter bit in cutting position .on the hinged front holder part. ' chainv block comprising cooperating lbit holder 3. A detachable bit holder adapted lfor mount parts hinged together, and means at the outer i ing on a chain block of a cutter chain, .comprising 30" end of theholder for hingedly connecting `said a head and an integral shank, the latteradapted parts, one -of said .parts having a >portion `re for reception in a socket of a chain‘blockand said ceivable in said block Asocket and the other 'of head having a socket adapted to receive a cutter said parts being disposed wholly outside of the bit, and a, front holder part hingedly connected block socket and engageable at the end thereof t0 said holder head at the outer end of'therholder, yremote from its hinge withan exterior surface the hinge located near the rear side of said holder on the chain block when theholder is in bit hold shank, said hinged front >holder `part swingable ing position with respect to the block. about its hinge into engagement with ,a cutter 10. In a cutter chain, the combination with a bit in said head socket and engageable Iwith a _chain block havinga socket, of „a bit -holder for chain block for holding a cutter bit against re 40 'securing a cutter bit in cutting position on said lease from said head socket. chain block comprising cooperating bit holder 4. A cutter-bit-holding `means »comprising .a parts hinged together, and meansat the outer member having a socket adapted to-‘receiveiia cut_ end4 of the holder for hingedly connecting said ter bit, a cross pin secured to said member and parts, one part having a socket adapted to re traversing said socket and against which a cutter ceive a cutter bit-and a portion receivable in said bit received in said socket is adapted to rest, and block socket and the other part having at the a bit-holding member pivotally mounted on said end .thereof remote from its hinge spaced sur pin and engage'able with a cutter bit in said socket Lfaces one engageable with a cutter bit in said bit for holding the bit against release from said socket. - receiving socket and the other surface engage 50 able with an exterior surface on said chain block, 5. A cutter bit supporting and holding means said latter part being disposed wholly outside comprising a holder member having al socket of said block socket when the holder is in bit adapted to receive a cutter bit, a holder part holding position with respect to the block. hinged to said holder member and adapted to» 11. In a cutter chain, the combination with a engage a cutter bit received in said socket for 55 chain block having a socket, oi a bit holder re preventing release of the bit from said socket, ceivable in the block socket for holding a cutter and an element secured to said holder member bit in cutting position on the chain block compris and traversing said socket and providing an abut ing a pair of cooperating holder parts hinged to ment against which a cutter bit received in said gether, and means at the outer end of the holder socket is adapted to rest, said abutment-provid for hingedly connecting said parts, one part hav ing-element also providing a pivotal mounting for ing a bit-_receiving opening extending there said hinged holder part. through, and a cutter bit received in said open 6. In a cutter chain, the combination with a ing with its rear end resting on an exterior sur chain block having a socket, of a detachable 'oit face of said chain block, and said other part en holder having a shank receivable in said block 65 gaging an exterior surfacer on the chain. block socket and an integral head disposed outside of Wholly outside of the block socket when the hold said socket, said head having a recess for receiv er is in bit holding position, said latter part en ing a cutter bit, and a holder part hinged at one gaging said cutter bit for holding the latter end to said holder head at the outer» end of the against endwise release from said opening. holder and at its other end engaging the exterior 70 12. In combination, a cutter-bit-holding means surface of said chain block outside the block comprising cooperating holder parts hinged to socket and at said latter end engageable with a gether at the outer end of the holding means, bit in said head recess for preventing release of one part having la recess for receiving a cutter the bit from said recess. bit, and a cutter bit received in said recess and 7. In a cutter chain, the combination with a 75 having a notch, said other holder part having 4 .25387,285‘: the extremity of .the cutting point, and a member hingedly connected to said holder member at the outer end of the ,holder in. adjacency to the bit . 13.v In arcutter chain, a `chain .block havingal seat,. the'hinge axis located on the holder in ad socket, andrholder means. for securing a cutter bit in cutting position on said block comprising'ì 5;, Vance of .the rearmost point of contact of the :bit with the bit seat and said hinged member swing cooperating, relatively swinlgable holder partsv able upwardly about its hinge upon insertion of hinged together at the outer end of the holder the holder shank into a block socket to engage means, one part having a portion disposed in said a portion of said front bit face to block exit of the block socket and the other part swingable at one end about its hinge and disposed Wholly outside lçïbit from its seat. 17. A detachable bit holder adapted for mount of said block socket when the holder means is inl ing on a chain block of a cutter chain, compris-' bit holding position. 1 Y ing a head and a shank, the latter being adapted' ~ 14., In ,a cutterchainga chain block having a. for reception in the socket of Áa chain block and socket,> and, holder means for securing aV cutter bit in _cutting position on said block comprising 15. î adapted for engagement by securing means en_ the block, said head having a bit-receivingrecess, cooperating holderiparts hinged together at the' a double-pointed reversible cutter bit seated in outerend of the holder means, one part having said head recess'with a cutting point projecting a zportion.disposed in said‘block socket and the outwardly therefrom in position to cut, and a other part swingable about -its hinge and clis posed wholly outside of said block socket and en 2Q;¿member hingedly connected to said head at the outer end of the holder in adjacency to said head gageable at ,the end thereof remote from its-hinge recess, the hinge located on the holder at a point with anexterior surface on the chain block when outside of the point. of engagement of the se the holder means in in bit holding position. " - I » ~ curing means with said shank, said hinged mem l5. A detachable bit holder adapted ì‘or mount ing on a chain block of a cutter chain, comprising y25-;¿ber engaging said bit upon insertive Ymovement of the holder shank in a socket of a chain block. a head and a shank, the latter adapted for recep a portion received in said bit notch for prevent ing release of said bit from said recess. , ' 18. A bit holder adapted for mounting on a' chain block of a cutter chain, comprising a head having abit-receiving recess, a double-pointed and a shank, the latter being adapted for re reversible cutter bit seated said head recess with a cutting point projecting outwardly there 30.;'.ception in the socket of va chain block and said head ,having a l bit-receiving socket, a double from in position to cut, and a member hingedly pointed reversible cutter bit having one portion connected at one end to said head at the outer disposed in said head socket and the other por end of the holder in adjacency to said bit-receiv tion projecting therefrom, and a bit-securing ele-` ing recess, said hinged member operable to en gage at its other end a portion of the project 3.5..':ment hingedat one end to said head at the outer end of the holder. and having spaced abutmentk ing cutting'point for preventingl displacement of surfaces at its other end, one vvoi said abutment the bit fromk its recess. Y Y , surfaces adapted for engagement with an ex 16. A detachable bit holder adapted `ior mount terior surface of a chain block and the other ing on a chain block of a cutter chain, comprising abutment surface engageable with the projecting a holder member having a bit seat, a double portion of said cutter bit, said hinged element poínted reversible cutter bit seated'in said holder swingable on its hinge into and out of bit-se member with a cutting point projecting forward curing engagement with said projecting bit por ly and upwardly in cutting position with said pro tion in a socket of a chainblo'ck and said head jecting point presenting a flat front face in clining slightly downwardly and rearwardly from ëätion. CHARLES F. OSGOOD.