US877124A - Board-edging machine. - Google Patents

Description

No. 877,124. PATENTED JAN. 1908.

LA FAYETTE G. ROBINSON & L. .T. HAN'HART.

BOARD nema MACHINE.

APPLICATION FILED JUNE 15, 1907.

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No. 877,124. PATENTED JAN. 21', 1908. LA FAYETTE e. ROBINSON & L. J. HANHART.

BOARD EDGING MACHINE;

APPLICATION FILED JUNE 15, 1907.

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No. 877,124. PATENTED JAN. 21,1908. LA PAYETTE'G. ROBINSON & L. J. HANHARTI BOARD EDGING MACHINE. APPLICATION TILED. JUNE 15, 1907.

[.Illlll lll |lll O O I VVI/TDQSSEYE No. 877,124. PATENTED JAN. 21, 1908. LA FAYETTE G. ROBINSON & L. J.-HANHART.

BOARD EDG'ING MACHINE,

APPLICATION FILED JUNE 15, 1907.

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- having parallel edges, each of the succeeding UNIT-ED STATES:

AT NT OFFICE.

LA FAYETTE G. ROBINSON OF NEWPORT, KENTUCKY, AND LOUIS J. HANHART, OF

CINCINNATI, OHIO, ASSIGNORS TO J. A. FAY & EGAN COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF WEST VIRGINIA.

BOARD-EDGING MACHINE,

Specification of Letters Patent. Application filed June 15, 1907. Serial No. 379.272.

' Patented J 1111.21, 1908'.

of the United States, residing, respectively,

at Newport, in the county of Campbell and State of Kentucky, and at Cincinnati, in the county of Hamilton and State of Ohio, have jointly invented certain new and useful Improvenients in Board-Edging Machines, of which the following is a specification.

It is the object of our invention to provide a new and improved board edging machine, capable of providing a board with a true straight edge irrespective of previous irregularities, curves,..or other unevennessor imperfections in the edge of the board when.

in the rough, so .as to permit the board to have a proper glue joint provided at its edge or to have this straight edge provided for One of the objects of pro other purposes. viding this straight edge is to give the board an edge which may-befed againsta side gage in manner so that subsequent sawing operations may be performed upon the board with the assurance that these subseas to cut the board into longitudinal strips edges on the board after the previous strips are cut off of the same forming the guiding edge for the succeeding out, the line of the original edge provided by our improved device however determining the line of each succeeding edge, it being understood that the board must-first be provided with a straight edge-.before it is capable of being properly guided against a side gage for performing a straight out lengthwise of the board. In our improved device we accomplish this by supporting the board, wlflile being so edged, preferably solely and longitudinally upon an endless bed or supporting chain, forming an endless supplemental supportingtable, guided in a straight line of travel, said supplemental table protruding from the upper surface of the normal table for raising the board relatively to the irorrnal table while the same is being edged. In our,

improved device we provide a flat-top norma table, whereon ordinary sawing operations may be performed, and whereon the board may be handled, and we embed the said endless bed or supplemental supporting table in this normal table, and we further provide means'whereby the relative height between the top surface of the normal table and the top surface of the endless supplemental sup orting table may be relat vely adjusted to Q eight, so as to cause the endless bed or supplemental supporting table to protrude from the upper surface of the normal table for raisin the board relatively to the normal table w e the edging. operation is ,being performed, and for also permitting the upper surface of the endless bed or supplemental supporting table to be on a evel with or slightly below the upper surface of thenonnal table when the machine is being used for ordinary sawing operations, for instance, scroll-sawing purposes.

- ,We also provide a pressure device above the endless supplemental supporting tablefor causing the board to be ressed upon the latter for causing the boar to follow truly the line of travel of the endless supplemental supporting table.

After the board has been provided with its straight edge, it may be readily guided. in

straight lines against an ordinary side ga e.

The subsequent sawin operations upon t '0 board, being so guide are caused to follow the true straight line of the original straight edgglprovide in our improved device.

e invention will be readily understoq'd from the following description and claims, and from the drawings, in which latter:

I Figure 1 represents a erspective view of our improved device. ig. 2 is a front elevation of the same, artly broken away. Fig. 3 is a plan view of t e-same. Fig; 4 is a rear elevation of the driving mechanism for the feeding means. Fig. 5 1s a detail of the feed ing means shown in side elevation, withthe lower wall of the table-groove shown in section on the line nu-w of Fig. 3. Fig. 6 is a cross-section of the table-support of the endless bed or supplemental supporting tablepn the line 'y-y of Fig. 5, showin a board beln edged and the pressure-roll a ove the boar for pressing the board upon the endless sup plemental supporting table for causing it to travel in a true line with the said endless sup-- plernental table; and, Fig. 7 is a plan view of a board having an uneven edge and having the parallel lines of the longitudinal saw-cuts provided in our improved device indicated thereon.

' A usual practice of edging boards hereto fore, has been to lay the board upon a so ,1 called edging-board, which is then manually! shoved upon guide-ways across the path of travel of the saw, the edging-board being then pushed back to original position for a succeedi g cut, and in operation it was necessary to push the edglng-board forward the full length of the board being edged and to then return the edging-board to original position for a succeeding out.

In our improveddevice, we dispense with edging boards, and perform the edging operation with an endless supplemental sup porting table of the character and in the relation mentioned, the said endless supplemental supporting table traveling cdntinuously in one direction. In our improved construction also, the upper or supporting stretch of the 'endless supplemental. supporting table may be comparatively short, compared with the necessary length of edging boards heretofore used or the length of the board being edged.

We have exemplified our invention as embodied in a band-sawing machine, in which 1 represents the base, which supports a lower saw-wheel shaft 2 carrying a lower band-saw wheel '3 and mounted in suitable bearings 4. A column 5 projects upwardly from the base. A bracket 6 is adjustable on'the column on ways 7 by means of an adjustin screw 8 journaled in bearing 9 on the co umn, and; threaded into an internally threaded lug 10 on the bracket. The bracket 6 supports an upper saw-wheel bearing 11 provided with suitable adjusting and straining devices. An upper saw-wheel shaft 12 is journaled in the bearing, an upper saw-.wheel'13 being secured to said shaft. Thesaw-wheel shafts or mandrels 2 and 12 are parallel'with each other. A band-saw blade 14 takes about the saw-wheels and is driven from the lower sawwheel in. a suitable manner, as by a pulley 15. The bracket 6, at its front end, is provided with a slideway 16 in which a ram 17 is ad justable and has movement. At its lower end the ram 17 has bearings 18 19 in which shafts 2O 21 are journaled, the shafts having feed-rolls 22 23 secured thereto. An arm. 24

. projects sidewardly from the forward end of a so the bracket and has a lever 25 pivoted thereto on a bolt 26. r

27 is a, .T'bolt Whose head and shank are slidable-in an undercut slot 28 in the ram,

a'link 29 being articulated to said T-bol-t and to the lever 25 as by a'bolt 30. u The T-bolt is adaptedtobe clamped to the ram at suitable points alonglsaid'slotfby anut31.

- The ram is provided with a rack 32 with the teeth of which a pawl 33 is adapted to engage, being however normally out of engagement. The pawl is pivoted bu a bolt 34 in a lug 35 of the arm 24. The lever 25 is arranged to take'under an adjustable pin 36selectively insertible into a series of a Jermovement.

tures 37 Qt'the outer end of the arm 24. his

construction is for the purpose of determinten are adjusted to a height above the normal table 38 corresponding to the thinnest lumber at the timebeing operated on, the said rolls yielding to inequalities in the lumber.

If it is desired to raise the rolls, the outer end of the lever 25 is depressed, which raises the ram, and the adjustablepin 36 is inserted into the proper aperture 37 for limiting the rise of the outer end of the lever, and thereby limiting the drop of the rolls, the rolls however being permitted to rise as the outer end of the leveris not limited in its downward If it is desired to raise the feedrolls to substantial extent, the outer end of the lever 25 is depressed, and the pawl 33 pushed into engagement with the rack 32, thereby supporting the ram. The nut 31 is then loosened, and the outer end of the lever raised for sliding the T-bolt 27 in the slot 28 to a new position lengthwise of said slot, when the T-bolt .is again clamped, the further depressing of the outer end, of the lever 25 then causing further rise of the ram and feed-rolls. A supplemental slide 42 is adjustable up and down on the ram on a slide-way 43 and is secured in place thereon by means of bolts 44. The supplemental slide carries an uppersaw-guide 45.

There is a slot 47 in the normal table... An endless bed 48'for the board, shown at (t, is

adapted to travel in this slot. This endless bed forms an endless supplemental supporting table and is composed of links 49 having a supporting face 50. The endless supple mental supporting table is "adapted to form a loo travels adj acenti to the upperface 53 of the -normal table, and the lower stretch 54 of which forms a loop under the table. The

endless] supplemental supporting table is "'adapted. to travel over sprocket-wheels 55 56 respectively mounted on shafts 57 58. The shaft 57 is journaled in bearings 59 on brackets 59 secured to the normal table. The shaft 58 is journaled in bearings 60 51, the upper stretch 52 of which ring the normal height of the rolls, which latsecured to the bottom of the normal table.

The endless supplemental sup or-ting table is extended in width, and, as be noted in Fig. 6, when the machineis edging boards, the endless supplemental supporting table extends higher than the upper face 53 of the normal table so that the board, shown at a, may be supported upon said endless supple mental supporting table, thus raising the board above the upper surface of the normaltable for relieving contact therewith, as con tact between the board and normal table or with supporting parts otherthan said endless supplemental supporting table will have the tendency to cause the board to swerve from its true line of travel, which is parallel with the path ef'travjel of saidendless supplemental su o f nrqtable. We'prefer also to pro.-

wide an adjustment for the. endless table so that'it may be lowered to bring its upper surface on a level with the upper surface of the normal table, or if desired so as to bring the upper surface of the endless table slightly below the level of they upper surface of the normal table, for putting the endless table out of commission as a guiding agency, in which case. the endless table remains station 9.1- so that the normal table or the combined ta les may be used for ordinary purposes of a stationary table, in other usual sawing operations. In this manner the machine is adapted not only for edging purposes but also for other sawing purposes. For readily permitting this adjustment I prefer to have the slot &7 take the form of a groove, the said groove being provided with an inclined. bottom 61, the incline extending lengthwise of the groove. A wedge 62, having an inclined under-facet? for mating the incline of the bottom of said groove, is inserted in said groove. 'The wedgeis also provided with slide-ribs 64 adapted to engage the slidegrooves 65 of the links of the endlesstable,

the saidslide-ribs and slide-grooves being preferably V-shaped for definitely positionmg the endless table laterally-irrespective of wear'between the parts.

For raising or lowering the upper stretch of the endless supplemental table, the wedge is adjusted long1tudinally of the groove and for accomplishing this, we provide a screwrod 66 threaded into the wed e at 67 and extending through an elongate aperture 68 in the lower wall of the groove or channel 47 of the normal table and having a handwheel 70, by means of which the wedge may be forced longitudinally and clamped to the normal table in desired position.

The endless supplemental table, which has an extended ap roximately fiat. upper supporting surface or the board, which ma if desired be suitably roughened or knur ed, operates within the normal table and travels closely adjacent to the hand-saw blade substantially parallel to the longitudinal axes of the band-saw wheels, the rolls thereabove having broad faces for forcing the board upon the endless supporting table .over a large area of the latter for supporting the board and thereby compelling the board, irrespective of length, to travel coincident with the travel of the endless supporting table and thereby cutting the edge of the board in a true line parallel with the lon itudinsi axes of the band-saw wheel mandre s.

Our im roved construction compels the board to wi' out ofthe path of travel of the traveling ta le, ,thereby supporting and guiding the l bbard p'ast the saw-blade in a true line vertlcally and horizontally and also longitudiwith a straight edge.

Our improved construction dispenses with use, an permits the ed ing to be done b kerf and thereby, economizes in lumber. After the board has been ed ed, it may be sawed into lengths of desire le widths by again or repeatedly feeding the same through the machine with its'edge against a gage 71 adjustable across the table and clamped in adjusted osition in suitable manner, the original e ging of the board by the machine insurin that all of said strips will be sawed in 1Epara lel lines.

or operating the feed-rolls we show a cross shaft 72 "ournaled in a bearing 73 of the column an' provided with a conerpulley 74, ,over which and a cone-pulley 75 on belt is adapted to travel for driving the shaft is rovided with a worm 76 'with 78 journaled on the column connecting with the feed-roll shaft 20 b means-of an extensible shaft 79 through nuckle-joints 80 81. The shaft 20 is provided with a sprocketwheel 82' and the shaft 21 with a sprocketwheel 83, over which sprocket wheels a sprocket-chain 84 travels.-

We prefer also to provide a ower drive for the endless sup lemental tab e, although the said endless ta le maybe permitted to run idle and still erform its guiding functions, or the trave ing table may be driven and the ressure-rolls above run idle. For driving tie endless supplemental table we provide the drive-shaft'78 with a sprocketin 87 of a bracket 88 secured to the normal ta le and carries a pinion 89 which meshes with a ear 90 on a shaft 91 journaled in a bearing 92 of the bracket 88, and in a hearing 93 of a bracket 94 secured to the normal table. The shaft 86 is provided with a sprocket-wheel95, a sprocket-chain 96 taking over said sprocket-wheel and the/s )rocketwheel 85. A clutch 97 is provided etwccn a clutch-shifter 9S, sliding in bearings 99 of the bracket'94 being adapted to engage or disengage the clutch. The said adjacent ends of the shafts gl and 57 are separated, the said clutch being a so preferably separable for forming a space 100 between said respective clutch-faces and the adjacent ends of said shafts for permitting the band-saw blade to pass the same: The l table is also provided with a slit 101 for accominoda'ting the baml-saw blade when the latter is placed upon ortaken off the wheels,

means of a band-saw bla e which hasa sm l cross-shaft at different speeds. The cross-.

the adjacent ends of the shafts 91andk57,

nally of the board for providing the board long ed ing tables as heretofore in common thelower band-saw wheel shaft a suitablea worm-w eel 77 mounted on a drive-shaft wheel 85. A shaft 86"isijournaled in a bearpreferably {the said slit being substantially coincident close relation.

groove at one side of said slit 103 at the other side of'said slit extending slit for by Letters Patent is:

lengthwise of said slit for strengthening the normal table'at said slit. Alink 104 spans the-outer end. of said slit and is connected to said imrmal table at both sides of said steadying the normal table, as by means of bolts 1.05 106. -The normal table may also be provided with idlerrolls 107. The rear feed-roll bearing may be on an arm 108 having a separable connection 109 with the ram for aiding in ready removal-of the "band-saw blade.

Having thus fully described our invention what we claim as new and desire to secure 1. A board edging machine 'comprisin the combination of a saw-blade, a norma board-en table over the surface of which the work may be adjusted transversely of the plane of said saw-blade, said table having a slot parallel to the plane of said saw-blade, an endless supplemental table in said slot, and means for permitting relative up and down adjustment between said supplemental table and said normal table adjacentto the cutting 1 range of said saw-blade.

A board edging machine comprising the combination of anormal table having a slot substantially parallel to the sides of; the saw-blade in' said machine, an end-' less supplemental supporting table insaid slot having a board -supportingsurface higher than the upper surface of semi normal table for supporting the board longitudinally of said board supporting surface and in raised relation to said normal table, a gage for the work ad'ustable across the surface of said normal table laterally of thesides of said saw-blade, and means for permitting relative positioning up and downadjacent the cutting range of saidsaw-blade between said board-supportin surface and the upper surface of said norma table, and constructed and arranged for permitting employmentfof said machine for edgin and for regular'sawing purposes, substantially as described.

3. A board edging machine comprising the combination of a normal table having a slct substantially parallel to the sides of the saw-blade in said machine, an endless supplemental supporting table in said slot having a board-supporting surface higher than the upper surface of said normal table for supporting the board longitudinally .of said p orting surface and in 'I'HISEEl rela-i tion to said normal table, a gage for -the work adjustable across the surface .of said normal table laterally of the sides of said saw-blade,

means for permitting relative positioning up normal table,

supplemental supporting table for-pressing the stock upon said endless supplemental supporting table,substantially as described.

4. A board edging machine comprising the combination with a normal table having a slot substantially parallel to the sides of the saw-blade in said machine, of an endless supplemental supporting table in said slot having a board-supporting surface higher than the upper surface of said normal table for supporting the board longitudinally of said board-supporting surface and in raised relation to said normal table, a gage for the work adjustable across the surface of said normal table laterally of the sides of said saw blade, means for permittin relative positioning up and down adjacent t e cutting range of said saw-blade betweenlsaid boardsupporting surface and the upper surface of. said normal table, and pressure means above said endless supplemental table constitutin feeding means for said board, substantially as described. c a

' 5. Aboard edging machine comprising the combination with a normal table having a slot substantially parallel to the sides of the saw-blade in said machine, of an endless supplemental supporting table in said slot havmg a boardsupporting surface higher than the upper'surface of said normal table for supporting the board longitudinally of said board-supporting surface and in raised relation to said normal table, a gage for the worktadjustable across the surface of said normal table laterally of the sides of said saw-blade, means for permitting relative positionin up and down adjacent the cutting range 0 said saw-blade between said boardsupporting surface and the upper surface of said normal'table, a roll above said endless supplemental table, and driving means for actuating said endlesssupplemental table and roll while feeding a board therebetween,

substantially as described.

' 6. A? board edging machine comprising the combination,-with the saw-blade, of a:

said table having a slotSubstantially parallel tothe-sides of the sawblade in said machine, an endless su said slot, aawedge for posltioning saidsup plementaltable upand down in said slot, adjacent the cutting ran e of said saw-blade, a gage forthe work ad justable across the surface of said. normal table laterally of the sides of said saw-blade,

the upper face of said v c P e ,mental travellng board-supporting tab e in wedge and the inner face of said supplemen- 'tal table having guide-ways between them I for guiding said sup lemental table longi tudinally, substantial yas described. I

7. A vertical band-saw edging machine comprising the combination with upper and lower band-saw wheels and ma'ndrels therefor, of a normal table having an upper stock surface and a slot therein, an endless su plemental board-sup orting table in said slot with an upper fee mg surface extending substantially arallel W1th theaxial planes of said saw-W eel mandrels, said normal table having a slit therein adjacent to and extending substantially parallel with said endless sup lemental table, driving means for. saidend ess supplemental table, and a separable clutch in said driving means located adjacent to saidslit, constructed and arranged for permitting the band-saw blade to be inserted past said clutch and into said slit for the purpose, substantially as described.

8. A board edging machine comprising the combination of a normal table having a slot, an endless supplemental. table in said slot having a board supporting surface higher than the upper surface of said normal ta is for supporting the board longitudinally of said board supporting surface and in raised relation to said normal table, means forpermitting relative ositioning up and down between said boar -su portin surface and the upper surface of sai norma table, a roll above said endless supplemental table, drivingmeans for actuating said endless'sup- Elemental table and roll hile feeding a card therebetween, and means for raising said roll, and constructed and arranged for permitting employment of said machine for edging and for regular sawing purposes, substantially as described.

9. A board edging machine comprising the combination of a normal extended flat-top I table arranged for ordinary board sawing par oses, said normal table having a slot, an 40 end ess supplemental supporting table in said slot having "an upper oard-supporting surface, means for permittingrelative positioning up and down between said boardsu'p orting surface and-the upper surface of said normal table,- a roll above said endless supplemental' table, and driving means for actuating said endless supplemental table and roll While feeding a board therebetween,

and constructed and arranged for permittin employment of said machine for edging an for regular boardsawing.purposes, substantially as described.

10. A board ed ing machine comprising the combination 0 a normal extended flat- 2 top table arranged for ordinary board sawing pur oses, said normal table having a slot, an end css supplemental su porting table in said slot having an upper oard-supportin surface hi her than the upper surface-of sai normal ta is, a roll above said'endless supi lemental supportingtable, driving means or actuating said endless supplemental supporting table and rollwhile feeding a board therebetween, and adjusting means for said 5 rol-l and constructed and arranged for per mitting employment of said machine for edging and or regular sawing purposes, substantially as described. In testimony whereof We have subscribed our names hereto in the presence of two subscribing witnesses.

LA FAYETTE e. ROBINSON. LOUIS J. HANHART.

Witnesses:

J. 0. Games THEODORE June,

Images