US1241871A - Self-feed sawing-machine. - Google Patents

Description

J. I. MEYERS.

SELF FEED SAWING MACHINE.

APPLICATION FILED MAR. I8, |9I4.

Patented Oct. 2,1917.

6 SHEETS-SHEET I.

1. J. MEYERS. SELF FEED SAWING MACHINE. APPLICATION msu MAR. I8, |914.

Patented Oct. 2, 1917.

6 SHEETS-SHEET 2 J. J. MEYEHS.

SELF FEED SAWING MACHINE.

APPL |CAT|ON FILED MAH. I8. |914.

Patented Oct1 2,1917.

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Patented Oct. 2,1917.

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l. J. MEYERS.

SELF FEED SAWING MACHINE APPL'lcATIoN FILED MAR.18.

Patented Oct. 2, 1917.

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SELF FEED SAWING MACHINE.

APPLICATION FILED MAH. I8. 19H.v

Patented Oct. 2, 1917',

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`JOHN J. MEYERS, or CINCINNATI, OHIQASSIGNOR To J. A. TAY a EGAN COMPANY, or

CINCINNATI, oHIo, A CORPORATION `I WEST VIRGINIA SELF-FEED sawINe-MACHINE.

To all 'whom it may concern.'

Be it known that I, JOHN J. Mareas, a'citizen of the United States, residing at Cincinnati,l in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Self-Feed Sawing-Machines, of which the following is a specification. y 4

My invention is applicable to :s0-called edging and rip-sawing machines wherein a board is fed lengthwise and its edge cut for lproviding the edge of the board with a so-called straight edge which is employed inthe subsequent lengthwise cutting of the board as a guiding edge whereby the board is guided against the side-gage.

It is the object of my invention to pro- 4 `vide a traveling endless table at each side of the saw-blade in'a machine of the character stated whereby the board or material is fed lengthwise past the saw-blade; further to provide means in such relations of parts whereby equal traveling movements of the traveling endless tables in the same direction are maintained; further to provide novel means in a machine of the character stated whereby pressure is exerted upon the board and whereby the pressure means are quickly and readily elevated for exposure of the endless tables and sawblade; further to provide novel means for adjusting the material-supporting stretches of the traveling endless tables to elevation; and further to provide novel means 'for laccess to and removal of the saw-blade in a machine of the character stated.

It is a further object of myiinventionvto provide a sawing machine employing a ch'- cular saw and a traveling endless table `at each side of said circular saw, saidendless tables formed as loops, and a saw-dust hopper located in said loops about said sawblade; further to provide such related mechanism with pressure-rollers above the sawblade, whereby said pressure-rollers are peri'nitted to yieldingly more in close adjacency toeach other and to the periphery ot the saw-blade; and, further, to provide a machine of the character described comprising a circular saw-blade, and a traveling endless table forthe board at each side of the saw-blade, arranged in su eh manner that the Vteeth of the saw-bladewill cut the board with a pressure exerted towardthe support- Ving endless tables for causingitraveling con- Speccation of Letters Patent.

Application filed March 18, 1914. i Serial N o. 825,555.

tact between said board and endless tables with pressure rollers above the board acting in close adjacency to each other and to the saw-blade. i

The invention will be further readily understood from the following description and claims, and from the drawings, in which latter:

Figure 1 is a side elevation of my improved device.

Fig. 2 is a plan View of the same.

Fig. 3 is a front end elevation of the same. A

Fig. 4 is a plan section taken on the irregular line LL-ll. of Fig. 1. 4

Fig. is al vertical cross-section taken on the irregular line 5-5 of Fig. 1. f

Fig. 6 is an enlarged section taken on the same line, showing the manner of mounting the saw-blade and take-out plate.

Fig 7 is a vertical longitudinal sectie taken on the line 7-7 of Fig. 3. f

Fig. 8 is a detail in cross-section on the line `8-8 of Fig. 7, showing the manner inwhich the endless supporting tables and the slide therefor are mounted and also showing the adjusting means for the slide, the saw-dust hopper being broken away and the saw-blade omitted.

Fig. 9 is a sectional detail of the manner of mounting the saw-frame, taken on the line 9 9 of Fig. 4l.

Fig. `1() isa perspective viewot1 the slide 'and itssteel guideways for the endless tables.

Fig. y11 is a perspective view of the separating guide-bar for the endless tables; and,

Fig.` 12 is a detail in vertical section on the line 12-12 of Fig. 2. showing the supporting means t'or the take-out plate.

15 represents the main frame ot the machine, on which there is a stationary table, shown as comprising table-sections 1G, 17, which have adjacent shelves 18, 1f), extending toward each other for forming achannel 20 extending lengthwise of the table between the stationary material-supporting :faces of said stationary table.

A saw-mandrel 21 is journalcd in bearings 22 of a yoke 23 adjustably supported on an adjustable saw-frame 24, the sides 25 ol' which are connected by a cross-piece 26, the said adjustable frame having bearings 27 about journal-sleeves 2S of bearings 29 supported by the main frame, (see Figs. 1, 2

and 9), in which 'a drive-shaftV 30 is journaled. rIhe saw-frame islocated within the main frame, immediately at the side of the traveling endless tables hereinafter described, with the saw-bearingv end of the saw-mandrel extending between the stretches of said endless tables. (See Fig. 5). The drive-shaft may alsoV be journaled in a bearing 3l shown in this instance as: on a floorstand 32. Suitable driving means are provided', as a drive-belt 33 received about the driving pulley 34. A driving. pulley 36 for the saw-blade is fast on the drive-shaft, a belt 37 being re;- ceived about said pulley and a pulley 88 on the saw-mandrel. A tightener pulleyy 89 for the last-named belt is journaled iny a tightener-frame 40 pivoted on bolts 41 to the saw fra-ine. r Y

The saw-frame 24 is provided with a. forward extension 45, having side guiding 49 in said side-'guides and threaded into the main frame for clamping said side-guides. in adjusted positions to the main frame: (See Figs.. 1,8 and 4.)

The saw-mandrel is arranged to be raised and lowered' by means of a screw-rod 51, threaded in: a pivot-'nut 52 pivoted on trunnien-screws 53 in said forward extensionr45. The screw-rod is journaled in a trunni'onbearing 54 in which it is preventedr from movingaxially by means of ahand-wheel 55' fast on the screw-rod and a collar 56 rigidly secured to the screw-rod by a bolty 57. The trunnion-bearing 54 is pivoted on trunnionscrews 58 threaded in lugs `59 ofthe main frame.

The adjustment of the mandrel-yoke 23 for alining the saw-mandrel and causing the saw-blade 127 to rotatev in a path parallel to thefline of feed of the material, (see Figs. l, 4, 5 and 6), is accomplished by means of setscrews 64 threaded in lugs 65 of theI sawframe 24;, clamp-bolts 67 being rreceived through slots G8 in said saw-framey and threaded into the yoke 23for clamping the yoke in adjusted positions.

When feeding material, for instance boards, lengthwise` through the machine, it is arranged to be supported upon traveling endless tables which have wide supporting surfaces for the boards,'the endless tables extending lengthwiseof the boards at the respective sides of the saw-blade 127, and arranged for presenting a substantial' wide supporting surface under the board at either side of the saw-blade, so that preferably'each of said endless tables is arranged to. independentlyv support ra board and feed the same lengthwise past the saw-blade.

rlhe endless tables are;v exemplified at 72, 7.3, comprising material-supporting links. 74

pivoted together. Driving means are shown for these endless tables, consisting of a feed-shaft 75, to which a sprocket-wheel 76 is secured, there being preferably one drive sprocket-wheel for the two endless tables shown. (See Figs. l, 2, 4 and 7). 77, 78,

are idler sprocket-wheels, journaled on atables to move in their guideways in` stretched and. straight condition, and thereby maintain equal feedingy movement of 'both' of the wide surfaced material-supporting feeding stretchesy of the endless tables, for maintaining a single board supported; ou and fed by both: the lfeeding stretches past the saw-blade in 'its true line of feed, for forming both the edges of the board cut-b3Y the saw-bladeas a glue-joint, and preventing` side swerving of theboard during. the

feeding.l movement.4 Buckling of the feeding stretch of each' endless table is also avoided?, as said feeding stretches aire both maintained in independently stretched condition, due to the fact that the driving sprocket wheel 7 6 acts to pull both feeding stretches with an equal yfeeding movement at one end of the loops of said endless tables, the other ends of said-'loops passing about independently rotatable idler'A sprocketf wheels 77, 78, loose on their shaft,.and the weight of the lower stretches of the endless tables maintain the feeding stretches of said endless tables independently taut.v The boardv is held firmly against both the feeding stretchesof the companion endless tables by the pressure exerted by the companion rollers thereabove.

The material-supporting links 74 are provided with lugs 86, 87 at their respective ends, pivot-pins 88 being received through said lugs for pivoting the supporting links together. Thelinks are also provided with cross-grooves 89y withv which drive-teeth 90 on the sprocket-wheels, having rounded ends conforming to said grooves, coact. The sprocket-wheels areI also provided with supporting teeth 91 having end-supporting faces 92, 93, arranged to coact with the respective proximate ends of each pair of supporting -links at the pivots betweenthe same, there being cross-grooves 94 in said sprocketwheels between the teeth and 91, acting as clearance spaces for receiving any dirt or dust that may work in between the sprocketwheels andvend-less beds.

The upper orv feedingstretches of the-endless tables are arranged to be supported on an adjustable support 101, which is arranged to be raised` and lowered for raising and lowering the` supporting or feeding stretches of the endless tables simultaneously, with relation to the plane of the material-supporting surfaceof the stationary table. See Figs. 5, 6 and 7). The adjustable support is provided with inclined supporting faces 102 supported on inclined guides 103` on the shelves 18, 19, and arranged `to be moved endwise, whereby all parts of the support or slide are caused to be simultaneously raised or lowered. The inclined guides slant upwardly toward the feeding-in end of the supportingA stretches, so that, when said stretches are raised, the slide willmove forwardly and extend a greater distance in advance of the saw-blade, for lessening the gap 100 between the forward end of said slide and the in-feeding sprocket-wheels,

which is an important feature, `especially when feeding warped or crooked material.

A stretcher 99 may bridge the channel 20,v in advance of the endless tables, the ends thereof being supported in the rabbetsl143 hereinafter mentioned, and secured in place by bolts 98. l

The endwise `movement of the slide, in the present exemplification, (see Figs. 1, 3, 4, 7 and 8), is accomplished by means of a lever-arm- 106 secured to a rock-shaft 107 journaled in a bearing 108 of a hanger 109 secured to the frame and in a bearing 105 secured to the frame. An arm 110 is fixed to said shaft and is connected with a lug 112 .on the slide by means of a link 113 articulated to said arm 110 and z lug 112 by articulations 114, 115. Theleverarm is arranged to be clamped in adjusted positions by means Vof a clamp 117 having a threaded shank 118 receivedv through a slot 119 in the hanger `109 and threaded into a threaded bearing 121 in the lever-arm.

The slide is provided with slot 126 through which the saw-blade 127 is received, the side walls of the slot flaringdownwardly for accommodating the flanges 128, 129, between Which the saw-blade is clamped. (See also Figs. 5 and 6.) Means are provided for separating the endless tables, whereby a saw-space 130 is provided between` said endless tables, in

. which the saw-blade` is arranged to rotate. e (See also Figsl 10 and 11). For properly tracking the endless tables, a yseparating guide, shown as a bar 131 is provided inthe line of the saw-blade and is provided with a saw-slot 132. This bar is on the slide 1 01, and is shown rigidly secured thereto, being preferably a steel bar for forming a steel separating guide between the materialsupporting stretches of said endless tables. A- tongue and groove connection is shown provided between `the slide and bar, the

groove 133 being in the slide and the tongue 134 at the bottom of the bar, the bar being secured to the slide by means of bolts 140.

The slide is also preferably provided with strips 136, preferably steel strips, therebeing preferably a pair of each of these strips for each of the endless tables, arranged in separated relation for coacting with the side portions of the supporting links of said endless tables. They are shown received in recesses 137 extending longitudinally of said slide and secured in place by bolts 138, the strips for each of the endless tables having a space 139 between them so that at least a substantial portion of the width of said supporting links is free from wear on account of the travel of said endless tables over their supports.

Coacting with the separating bar 131 there are side gibs 142 located in rabbets 143 in the upper edges of the side walls of the recess 20 in the table. Backing screws 144, locked in adjusted positions by lock-nuts 145, are arranged to force the gibs toward the traveling tables for providing definite guideways in which the supporting stretches of the endless tables move. kPins 148 extending from the side gibs into holes 152 in the side walls of the rabbets 143 prevent rising of the side gibs. |The construction further provides guideways having wear-resisting walls, exemplified as steel walls, for said supporting stretches of said endless tables. In order that the saw-space 139 between the endless tablesat the supporting surfaces of said supporting links may be reduced as much as possible consistent with proper clearance for the saw-blade, the adjacent faces of the supporting links of said endless tables are provided with rabbets 146, in which the separating bar is received, thereby forming overhanging proximate edges 147 for said supporting links.

Separating plates 149, (see Figs. 2, 4 and are received between the sprocket-wheels 7 78, `the peripheries of the separating plates being received in the rabbets 146 at the inner edges of the supporting links, for maintaining the supporting links of the endless tables in equi-distant relation in advance of the saw-blade. 1 l

The intermediate portions lof the inner faces of the suporting links which travel opposite the clearance-spaces 139, eoact with the end-supporting faces 92, 93, ofthe supporting' teeth 91 of the sprocket-wheels. (See Figs. 4, 5, Gand 8). These faces determine the radial distance of the end supporting links from the axes of rotation of the sprocket-wheels, and the distance between the supporting links at the respective ends of the endlesstables. .f

The engagement between said sprocketwheelsand supporting links takes place between faces not subjectee to sliding Contact,

` which the saw-blade and insuring the maintenance of' sizes of said parts, and the maintenance of said distances, and insuring coincident lengthwise travel of both ofthe endless tables, so that the supporting stretches of said endless tables at the respective sides of the saw-blade vwill travel"y equal distances for maintaining the board supported by said supporting stretchesv in al plane parallel'to the plane of travel of said supporting stretches and preventing a swervmg of said board at any point of its length out of its true path of travel.V Thel constructions stated insure such accuracy inthe travelof the endless tables as to permit glue jointing tov be accomplished withY employment of a circular saw. A shield 150' is provided above the return stretches of the endless tables. A saw-dust hopper 155 is is suitably secured in Itl is provided with `a spout 157' is` suitably connected with the piping of a shaving exhaust system. rlhe hopper is positioned about thesaw-blade betweenv the supporting stretches ofthe endless tables and the lower or (SeeFig's. 1, 8, 4, 5, 6 and 7). I provide novel means for mounting the saw-blade in order to permit its ready mounting and removal. (See Figs. 4, 5 and 6. rlhe inner flange 128 is received 4vover the reduced end 162 of the mandrel, against a shoulder 168 of said mandrel, the outer end of said reduced end extending only slightly outwardly beyond the contact-face 164 of said flange, for permit# ting the saw-blade to be moved across said contact-face close to saidcontact-face, whereby the saw-blade `may be moved into and out of the saw-slots in directions atV substantial right anglesto the saw-mandrel. The outer flange 129 is centered about a bolt 167 received through the Abore of the sawblader and` threaded into the threaded bore 168 of the sawmandrel, for clamping the outer flan-ge 129 against the saw-blade and the saw-blade against the inner ange, whichis clamped lagainst the shoulder163.

The stationary table-section 17 is provided withan opening 171, (see Figs.2, 5, 6 and 12), through which ready access is obtained to the bolt 167 for' removal of the same and of the saw-blade, the short pro- ]ecting end of the' mandrel permitting the saw-bladev toI be moved laterally slightly be# yond said end and then to be raised between thev supporting stretches ofthe endless tables and thereby removed, the pressure-rollers having'been raised. The saw-space betweenV the pressure-rollers permits removal of the saw-blade lengthwise of the pressure-heus ing hereinafter described. v

The said openingv is normally' closed by a plate 172 which rests on ledges178, 174'.

The plate is also provided with a set-screw place.

' main frame.

located about' return stretches thereof.-

plane of they 1275 arranged to be adjusted for contact with theI side-gib 142 for giving lateral outward support to said side-strip.v v '1 lSuitable means are providedfor driving thevfeed-shaft at dierent speeds. The feedshaft is journaled in bearings 177 on the A gear 178 is onk the feedshaft, and is meshed with a pinion 17 9 on a shaft 180 journaled in bearings 181 on the main frame. (See Figs. 1, 2, 8, 4`l and 5.) A step-pulley 182 is on said shaft and ay step-pulley 183 is on belt 184 is receivedy about selective ones of said steps of said pulleys, this belt being` normally loose and arranged to be tightened when feedingmovement' isdesi'red, by means of a suitable tightener, which is exemplified as comprising a pulley 185 on a lever 186( pivotedv at 187 to the frame, an operating lever 188 pivoted' at 180 to the frame cone necting with said lever 186 by means of a y link 190 articulated with the lever 186 at 191 and with the operating lever at 192. lVhen nov feeding movement is desired, the handle'v end of the operating lever is dey pressed forwardly for causing the lower end of said lever to engage a stop193.

Pressure means for the board are pros vided', shown comprising l 194 on a roller-housing 195 movable up and down on guide-rods 196 about which bearings 197 on the roller-housing are received, the bearings about each of the rods being separated'vertically on a bracket 198. (See Figs. 1, 2, 8, 5 and 7'.) A standard `200 ex-V tends upwardly from the main frame and has a bracket 201 whichprojects over, the material'suliporting surface of the stationary table, and is provided in which said guide-rods 196'are received, the bearings for eachrod being shown separated vertically, With one ofthe bearings 197 received between the' same. ln the present exemplification, the rod is shown secured in the bearings of the bracket on the standard, the bearings of the roller-housingibeing ginded thereby. L For raising and lowering the roller-housing I provide a lever 205, which lcomprises a bearing 206, an operating arm 207 'and' an arm 208, the latter connecting with the roller-housing by means of a' link 204 articulated with the roller-housing at 209 and with theiarm 208 at 210, shown as al slot and pin connection to permityield of the roller-housing in case of excessive raising'actionby the material.

'Ihe said lever is positioned in adjustedpositions by means of an arc-piece 211"l piv-y oted to the standard at 212 and received pressurerollers Y with bearings 202 through a friction-bearing' 218on said oper arc-piece 211 is received, The loclring le 13@ 2o v threaded ends.

Vthrough said plate 227 and sa1d spring and vided for the roller-housing, exemplified as a spring 220.` 221 is an arm fast on the shaft 222 about which the bearing 206 is pivoted, this shaft being rockable in bearings 223. A'fstrap 224 has its loop-end received about a pin 225 on the arm 221, the

ends of said strap being threaded, as shown at 226, and received through a plate 227 aga-inst which one end of the spring 220 is received. Nuts 228 arethreaded about said A rod 229 is received a plate 230, against which the other end of y said `spring exerts its expansive pressure, 25

said rod at saidlatter plate being threaded, as shown at 231, a nut 232 being received i about said threaded end. The end of said rod adjacent to the plate 227 is connected with the frame, as by means of hooks 233, 234.`

The adjustment of the nuts 228 and 232 ad- -just ytheftension ofthe spring, and the tension ofthe spring is also adjusted by adjustment ofthe threaded shank of the hook 234 in the bearing 235 by means of the n'ut236."'v 'l AThe pressure-rollers 194 are fixed, preferably in pairs, on shafts 237, journaled in bearings 238, "of depending swinging arms 239, pivoted on'l shafts p 240l journaled in bearings 241 ofthe roller-housing.v Springs 245` are located' betweenl the arms and the housing for normally exerting pressure downwardly upon the material being fed through the'` machine. These springs are shown received about rods 246 pivoted to the depending arms at 247 and 'received through holes'248 of said housing, nuts 249 adjusting. the range of movement of said depending arms and `limiting the downward movement of the rollers in any adjusted position of the roller-housing.

' of the' parts.

When it is desired to edge the board, that is, provide it with a straight edge, the board is fed through the machine upon the traveling tables, the rollers exerting' pressure upon the board for causing lengthwise movement of the board in the plane of movement of the endless tables, whereby one edge of the board lis sawed straight. This sawing takes place closely adjacent to one edge of the board.

This straight edge isthen guided against a suitable side gage 255 arrangedV to be selectively placed at suitable position above the stationary table-section 17 for -determining the proper width of board t0 be eut, the board at each `feedii'ng movement being maintained in a path parallel to the pathof travel of the endless tables for insuring the straight cutting of the board at each cutting thereof. The construction of my improved device provides a ywide'space at each side `of the traveling tables for support of the board when desired. The supporting stretchesof the endless tables may, if desired, be lowered to be in the plane or below theplane of the material-supporting surface of the: stationary table, and the roller housing be raised so that the rollers are out-of the way, ifit is desired to use the machine as`an ordinary sawing machine. g

Having thus fully 'described my in vention, what I claim as new and desire to secure by Letters Patent is:

. 1.' A circular sawing 'machine comprising a circular saw-blade, endless feeding tables at the respective sides of Isaid saw-blade traveling in` parallel paths in thesame direction, Athe proximate edges of said endless feeding tables separated a distance substantially equal to the width of the kerf of said saw-blade, and means above said endless feeding tables maintaining the boa-rd on said endless feeding tables by pressure as `'said board is laid on said endless feeding tables throughout the feeding movement of said board lengthwise past 'said saw-blade.

2. A circular sawing machine comprising a circular saw-blade, an endless feeding table at each side of said saw-blade, saidendless feeding tables traveling in parallel paths in the same direction, and a guide between the proximate edges ofthe stretches of said endless feeding tables at the saw-blade position, said guide having a saw-sloty therein, and said proximate edges extending over the top of said guide toward each other and toward said saw-slot, `whereby said proximate edges are brought into close proximityv to said saw-blade.

3. In a machine of the eharacterdescribed, the combination of a stationary table, a pair lioo of independent endless feeding tables comtatable circular saw-blade having itsv axisof ,rotation below said material-.supporting stretches and'extending between and above said material-supporting stretches, a slide through which said circular saw-blade projects from below, said slide simultaneously coacting with both said material-supporting stretchesand means for adjusting said slide lengthwise for equallyadjusting both said material-supporting stretchesto height `with relationlto said stationary table.

' 4. lnamachine of the character described,

\ the `combination `of endless feeding ,tables having 4upper' material-suppoi'ting stretches traveling in closely adjacent 'paths inthe v supporting stretches .and said inaterial-cen- Y taotingperipheries provided with saw-blade slotsI of approximately the width of theikerf of saidcircular saw-blade.

i 5. A circular sawing machine comprising a circular saw-blade, endless feeding tables yat ythe respective sides of said saw-blade traveling in parallel paths in the same direction, lzit-driving sprooketewheel whose driving relation to bothk endless feeding tables is fixed, relatively loose independent .driven sprocket-wheels for said endless feeding tables, lthe proximate edges of said endless nfeed-ing tables separated a distance substangtiallylequal tothe width of the kerf of said saw-blade, and means above said endless feeding, `tables maintaining the board on said endless feeding tables by pressure 4as said rboard. is ylaid .on said (endless feeding table throughout `the feeding movement of said boardlengthwise past said saw-blade.

.6. A board vedging machine comprising ,the `combination of a pair` of endless feeding .tables each comprising jointed links having wide board-supporting surfaces and having a` .saw-.blade path between them, ,means for guiding said yendless feeding tables in paths'forming board-supporting stretches at :the respective sides of said sawblade path, the proximate sideedges offsaid board-supporting stretches located in substantial juxtaposition with said saw-,blade ipath between them, pressure-rollers above ysaid board-supporting stretches respectively at the front and at/the rear of said saw- `blade path, coacting with said `respective endless feeding tables respectively at the .front and at the rear of said .saw-.blade v feeding tables past said saw-blade path ,and

under said pressure-rollers, :and vmeans for` independent reverse stretching .of ,saldre-` stretches, a sprocket-wheel atone .end of said loops pulling said feeding stretches with equal speed past said saw-blade, means supporting said respective endless feeding tables at the other ends of said loops for independent and relative y endvvise movement of said othery ends, and pressure-rollers at Athe respective sides of said saw-.blade vboth to .front and torear of said :saw-blade coacting with said endless feeding tables, said,I

endless feeding Atables andsaid pressure roll'- ers respectively having `l a V:saw-blade, :space between them of substantially the width of y the kerf of said saw-blade.- n f y 8. A board edging machine Ico,inpr-ising the ycombin'ation `of a savv-bladega fixed table, a ,pair of ,endless feeding'tables having board-'supporting feeding stretches fin said kfixed ,table for feeding vthe -boards lengthwise, .means for igugidingsaid feeding stretches at the respective .sides of said saw"- blade in directions parallel with the plane ofsaid saw-blade, "independently yieldable pressure vrollers at the front and rear `lef said saw-blade, said pressure rollers .coacting with ,each .of said .pair .of vfeeding stretches of said endless feeding ,tables atboth frontand rear lof :said saw-blade.means ,for coinbinedly feeding said .endless feeding tables with said board-supporting feeding stretches moving past said saw-blade, and `means* :for independentlyy stretching said feeding stretches in `,reverse direction.

.9. -A ,board edging machine comprising the combination of a saw-blade, a ifi- Xed table, a pair of endless feeding ytables ghav.-

ing board-supporting feeding stretches in said yfixed table for feeding the ,boards lengthwise, ,means for lguiding said feeding stretchesat the respective .sidesof said .sawv blade Iin `ohrections parallel .with the plane f of said {saw-blade, pressure-rollers at vthe front andrear o f said savvfb'lade, said pressure-rollers .coacting with each of said-.pair of feeding stretches of said `endless lfeeding ablSSyat both front and rear of l.said lsawblade, means for combinedly feeding said endless feeding tables .with said board-supporting `feeding stretches ,moving past said saw-blade, means for independentlystretching ysaid feeding 2'stretches in ,reverse .direction, and vlineales for .relative 11p ,dawn

adjustment Abetween said feeding StITQChQ and ySaid .xed table.

l0. ln a sawing machine of the character described, the combination of a saw-blade,v

a pair of endless feeding tables each comprising jointed links having Wide boardsupporting surfaces, means for guidingsaid endless feeding tables in paths forming a pair of board-supporting stretches at the respective sides of said saWblade for feeding a board laid on both said board-supporting stretches lengthwise in a path parallel to the path of said saw-blade, each of said pair of board-supporting stretches arranged for independently supporting a board and feeding the same past said saw- .-`blade, the proximate side edges of said board-supporting stretches located in substantial juxtaposition and having a saW- blade space between them of substantially means for independent reverse stretching of said respective board-supporting s stretches. In testimony whereof. I have hereunto signed my name in the presence of two subscribing Witnesses.

AJOHN J. MEYERS. Witnesses:

CHARLES E. WEBER, THERESA M. SILBER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C.

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