US272220A - Machine-table - Google Patents

Description

.(No Model:) 4Sheets-Sheet 1.

W. H. DUANE & G.W.- BUGBEE.

MACHINE TABLE.

Patented Feb; 13', 1883.

jz n enzfor (No Model.) '4 Sheets-Sheet 2. W; H. DOANE &- G. W. BUGBEE. MACHINE TABLE.

Patented Feb. 13, 1883.

(No Model.) 4 Sheets-Sheet 3.

W. H. DOANE & G. W. BUGBEE.

MACHINE TABLE. No. 272,220.

Patented Fb. 13, 1883.

N. PETERS Pmwumo n her, wmin mn. n.c.

(No Model.) -7 4 Sheets-Sheet 4;

W. H. DOANE & G. W. BUGBEE.

MACHINE TABLE.

N PErcR's Photo-Lithographer. Wnhingbn. DC.

UNITE, STATES ries.

MACHINE-TABLE.

SPECIFICATION forming part of Letters Patent N0.'272,220, dated February 13, 1883.

' Application filed June 28,1882. (No model.)

To all whom it may concern Be it known that we, WILLIAM H. DoANE and GEORGE W. BUGBEE, citizens ofthe United States, residing at Gincinnati,.in the county of Hamilton and State of Ohio',"have invented certain new and useful Improvements in Band Sawing-Machines; and we .do hereby declare the following to be a full, clear, and exact de scription of the invention, such as will enable others skilled in the art to'which it appertains to make and use the same.

This invention relates to bandsaws in general, but more especially to those which are convertible from hand-feed machines into powerfeed or resaw machines. Heretot'ore separate interchangeable tables were provided for these convertible machines, and it was necessary to remove one table and put the other one in its placein the conversion of the machines.

The principal object of this invention is to so construct these convertible machines that they may be converted without the removal and substitution of separate tables.

To this end it consists mainly in constructin g the work-supporting surface of two tables divided on a linejust in front of the saw-blade,

constructing the table in front of the sawblade with two faces, (one plain and the other having power-feed works erected upon it,) and so mounting this double-faced or duplex table that it may be reversed without dismounting it tobring either of its faces on a line with'the single table.

It further consists in so arranging the feed with respect to the gearing for imparting mounderstood, we have illustrated in the annexed drawings,'and willproceed to describe, the best roll mechanism. Fig. 3 is a rear elevation ofform thereof at present known to us.

Figure 1 is a lront elevation of a'band resawing-machine embodying our improvements. Fig. 2 is a side elevation of the tables and feedde'vices shown in Fig. 2. Fig. 4 is a longitudinal section in elevation ofthe reversible duplex table. Fig. 5 is a transverse section on line 0050 5 'of Fig. 4. Fig. 6 isa plan of the reversible duplex table. Fig. 7 is an elevation of feed-roll bearing-standard. Fig.8 is a sectional elevation of the feed-gearing driving-shaft. Fig. 9 is a transverse section on the line 3 3 Fig.8. Fig. 10 is a plan of feed-belt tightener. Fig. 11 is a plan of the driven frictional feed disk and gearing. Fig. 12 is a sectional plan of the driven frictional feed disk and gears. Fig. 13 is a sectional elevation of device for operating the reversible duplex table. Fig. 14 is a section on line 2 z of Fig. 13. Fig. 15 comprises sectional plan and elevation of means for securing the reversible duplex table in position.

We have illustrated our improvements embodied in a band-saw, the operative parts of which are mounted on a C-shaped frame, A, the upper saw-pulley, B, being mounted on the upper horn of the frame, and the lower sawpulley, 0, being keyed to the front end of the main shaft D, supported in suitable hearings on the base of the main fram'e, and carrying at its rear end a pulley, so that it may be driven by abelt from a counter-shaft. The single table E is mounted on the lower horn of the main frame, either immovably or in such manner that it may be tilted to the limited extent for sawing on a bevel. this'table so that it can be tilted, and to. that end any one of the known modes of connection providing for such tilting may be used. The front edge of this single table projects a little beyond the front face of saw pulley O and the saw-edge of the saw-blade F, which passes through a suitable slit out in such edge.

The duplex table consists of two rigidly-connected plates, G and H, and is secured upon the front end of the horizontal shaft I, by which it may be turned to bring either of its plates on alevel with the single table, E. The

. shaft I passes rearwardly through a long bearing on the lower horn of the main frame, underneath the single table, its rear end carrying a forked bearing, 1, on the rear side of the main frame. A worm-gear, I is feathered on shaft I between the legs of hanger I, by which it is 'held in posit-ion to properly mesh into and be It is preferred to mount driven by a worm, K, on a transverse shaft,

K, mountedin stirrup-bearings formed on bearing l, as clearly shown in Fig. 14. The wormshalt K is at. its outer end supported in a bracket, K fixed to table E, and may be turned by a winch or hand-wheel applied to it when the duplex table requires to be reversed. In order that the duplex table may be drawn close against the single table, and also separated therefroma sufficient distance to admit of the removal or application of the saw-blade, the shaft lis combined with means for moving itendwise. In this instance said shaft has a hollow tapped rear end, into which is screwed the screw-threaded end of a screw, 1 swivt-Ied to a fixed bracket, 1 so that it may be turned, but not moved endwise, by a winch or handwheel. By operating this screw 1 the shaftI may he slid endwise to move the duplex table up against or away from the single table, as may be required. In these operations the worm-gearing will prevent the turning of shaft 1. Thehollow end of shaft 1 is screw-threaded exterioily, and a nut, 1 is put on it to lock it after the duplex table has been drawn up against the single table. Studs 11 t' on bracket t" prevent endwise movement of hanger l and worm-gear l at times when nttt 1 is run back.

The plate G of the duplex table forms a plain unobstructed surface in continuation of table E, in connection with which it is used for supporting work fed to the saw-blade by hand. The plate H, on the other hand, while its face, when turned up, is also on a level with the single table, has two sets of upright power feedrollers mounted on the face, as shown. The rollers L and M are jonrnaled in hearings on a standard, N and the rollers L and M are similarly journaled in bearings on a standard, N The bases of the bearing-standards rest upon the plate H of the duplex table, and are respectively secured to slide-bars N and N by vertical stud-pins 11", which can turn in the slide-bars. Consequently the bearing-standards may be turned horizontally on the slidebars to effect parallelism of the rollers. This horizontal turning of the bearing-standards is effected by the adjustment of center screws, n, screwed in lugs on the base of each standard, and bearing against opposite sides of the upturned ends of the slide-bars. When properly adjusted horizontally the bearing-standards may be secured by bolts 11 The slide-bars are fitted in slots in plate H to move in directions across the edge of the saw-blade, so that the rollers may be properly adjusted with respect thereto and the stufl' to be resawed. A screw, or, swiveled to a log on plate H, is applied to the nut in the upturned end of slide-bar N for adjusting it, and a screw, it, is applied to slide-bar N for the same purpose. it", is placed on screw it, between a collar the: eon and its supporting-lug, so that the bearingstandard N, u it it its rollers, may yield to some extent to accommodate inequalities in the thickness of the stufi' led to the saw. The lower journals of the feed-rollers are provided heneath plate H with spur-wheels l and m and l and m, respectively. The spur-wheels l and A spring,

in are driven by a spur-wheel, o, secured to a bevel-wheel, 0 which turns loosely on the stud n of slide-bar N. The spur-wheels l and m are driven by a spur-wheel, 19, secured to a bevel-wheeh fi, which turns loosely on the stud n of slide-bar N. Bevel-wheel o is driven by a bevel-wheel, 0", on horizontal feed-shaft Q, and bevel-wheel p is driven by bevel-wheel p on said feed-shaft 0, which turns in bearings on the duplex table. The bevel-wheels 0 and p are feathered to shaft 0," so that they may he slid thereon. A fixed artn, 0, projecting frotn frame N, engages a circular groove in the hub of bevel-wheel 0 ,and a similar fixed arm, 12', projecting from frame N, engages a circular groove in the hub of bevel-wheel 19 Thus the bevel-wheels o and 19" are compelled to slide with the fraineN and N, so that they will always properly mesh with the bevelwheels 0 and p That end of the feed-shaft O which is the right-hand end when the plate H of the duplex table is turned up on a level with the single table carries on its overhung end a spur-wheel, 0, adapted to be engaged and driven by a pinion, P journaled on a stud, P, on the end of one arm of an elbowlever, P, which is pivoted on a horizontal shaft, P. Pinion P forms part of or is secured to spur-wheel P, which meshes with and is driven by a pinion, P keyed to a frictiondisk, P, on shaft P. Shaft P is supported in a hanger, P suspended from the under side of thesingle table E, and has keyed to its inner end a friction-disk, P, adapted to be driven by a friction-driver, R, on a shaft, R, supported by hangers R and R from table E. The outer end of shaft P is clutched by the hooked end of the short arm ofa lever, Pf, tulcrumed on a bracket on elbow-lever P in such I manner that such lever P may be turned horizontal, in order to slide shaft P for the purpose of forcing its friction-disk P up against or moving it away from the friction-driver it, according as the teed-gearing is to be in motlon or at rest. Ascrew,p tnrningin a not on the lever B, and adapted to bear with its foot against elbow-lever P, may he used to hold the triction-disk P in driving frictional contact with friction-driver B. When elbow-lever P is turned to a position in which pinion P can properly mesh into spur-wheel 0 one of its arms hooks onto a clamping-screw, P, by

which it may be firmly clamped to the edge of I the single table E. On rel asing it from the clamping-screw P the elbow-lever, together with its wheels P P and lever P may be turned down so as to disengage the spurwheel 0, so that the way may be cleared for the reversal of theduplex table. Shaft R cairies a pulley, R in order that it may be driven by a belt, H from a pulley. It, on main shaft D. The slack side of belt R is combined with a weighted belt-tightener, R pivoted to a bracket-arm on the under side of table E. In order that the speed of the feed-gearing may be changed to suit circumstances. the shaft R is so arranged that it may he slid endwise to friction-disk P.

move the frictiondriver B across the face of To this end the hanger R of the shaft is fitted in ways on t-he'under side of table E, so that such hanger may he slid horizontally to move the shaft endwise. The other hanger, R is fixed, and supports the shouldered hub of pulley R to which the shaft is feathered, so that it may slide in it. The shaft is provided with a collar on each side of hanger It, so that it must move with the latter. The hanger R is connected to a lever, B", fulcrumed at 1 on table E. Theouter end of lever B is connected to a rod, R which should reach to the front ,of the machine, in order that it may be convenientlyoperated by the sawyer. We do not herein claim this particular combination of parts for shifting the movable shaft endwise, but reserve the right to claim it llBIktlflEIlll a separate patent.

The single table E is provided with a horizontally-turning latch, S, in its edge, to engage a slit in one end or the other of the duplex table and lock the two tables together after they have been brought to the same level.

Since the single table E turns upon a center different from the axis of the shaft I of the duplex table, it is necessa ry to provide some means to compensate the difference in the planes assumed by the respective tables when turned on their centers for bevel-sawing. This is provided for in this instance by mounting the duplex table upon the eccentric portion 2" of shaft- 1 by turning the duplex table on which such difierences may be compensated. When properly adjusted on such eccentric the duplex table is secured to it by a set-screw, 1 which is provided with a suitable handle for convenience of operation.

Primarily the invention is notlimited to the particular means of supporting and reversing the duplex table. These means may be greatly varied without changing the essential character of this part of the invention. The mechanism or train for imparting motion to the feed-shaft and train for operating the feedroller, as well sas the feed mechanism proper, may also be greatly varied without departing from this general feature of the improved resaw-namely, that the power-feed of the duplex table is thrown out of gear by turning said table to bring its plain plate on a level with the single table, and is thrown into position to be driven on turning the duplex table to bring its plate carrying the feed-rollers on a level with the single table. The movement of the duplex table toward and away from the single table may be eff cted by sliding the duplex table on its supporting-shaft, either by hand or by mechanism, suitable changes be ing made in the construction. Parts of the invention may be used without other partsthereof, and some of the novel features may be incorporated in machines other than bandsaws.

Having thus described our invention, what we claim is-- 1. The combination, substantially as before set forth, with a woodworking-machine frame,

of the single table supported thereon and the versible duplex table carrying a feed mechanism on one of its faces, and the shaft for supporting and adapted to reverse said duplex table.

3. The combination,substantially as before set forth, with a woodworking-machine frame, of the single table supported thereon, and the duplex table, which is both reversible and movable toward and away from the single table, and also carries afeed mechanism on one of its faces.

4. The combination, substantially as before set forth, with a woodworking-machine frame, of the single table supported thereon, the reversible duplex table carrying a feed mechanism on one of its faces, the shaft for supporting and reversing said duplex table, and the screw for sliding the shaft.

5. The combination, substantially as before set forth, of the reversible duplex table, the feed-rollers mounted on the face of one of the two plates of said table,and the feed-shaft and train for driving said feed-rollers, arranged between the plates of the table. I

6. The combination, substantially as before set forth, of the reversible duplex table and a power-feed mechanism mounted thereon, the

driven pinion 0 of which is located, as described, so that it is thrown out of gear and into positionv to be driven, according as one face or the other of said duplex table is turned 7. The combination, substantially as before set forth, of the reversible duplex table, a pow er-feed mechanism mounted thereon, a gearing or train for imparting motion to the feedshaft thereof, and a lever or hinged arm for supporting part of said train, and pivoted at a point distant from the feed-shaft, so that by moving said lever or arm the train may be disengaged from or engaged with said feed-shaft.

8. The combination, substantially as before set forth, of the reversible duplex table carrying a feed mechanism on one of its'faces, the shaft supporting it, and the worm-gearing for turning said shaft.

9. The combination, substantially as before set forth, with a woodworking-machine frame and the single table supported thereon, of the reversible duplex table carrying a feed meohauism on one of its faces, the endwise movable shaft 1, the forked hanger thereon for supporting one end of the worm-shaft, and the worm-gear feathered to shaft 1 between the forks of said hanger.

10. The combination,substantially as before set forth, with a woodworking-machine frame and the single table supported thereon, of the reversible duplex table carrying a feed mechanism on one ofits faces, the shaft 1, the forked hanger thereon for supporting one end of the turned, and carryiuga feed mechanism on one worm-shaft and confining the worm-gear, the of its faces.

screw for moving shaft 1 endwise, and the In testimony whereofwe afiixour signatures fixed bracket supporting the screw and bearin presence of two witnesses.

5 lug against one side of the hanger. T

11. The combination, substantially as before FE set forth, with a woodworking-machine frame J and the single table supported thereon, ot' the Witnesses:

reversible duplex table mounted and adjusta- SIMEON HARRIS, 10 Die on an eccentric of the shaft, by which it is l A. O. BLAKEMORE.

Images