US372667A - Saw-hammering machine - Google Patents

Description

'(Nb Model.) 2 Sheets-Sheet 1. w. G-OWE'N.

SAW HAMMERING MACHINE.

No. 372667. Patented Nov. 8, 1887.

WITNESSES:

ATTORNEY (No Model.) 2 Sheets-Sheet 2. W. GOWBN.

SAW HAMMERING MACHINE.

N0. 372,667. Patented Nov. 8, 1887.

l limll l awu N PETERS, Phomuhu m her. Walhmglon. .c.

NITE STATES PATENT Fries.

\VILLIAM GOlVEN, OF VVAUSAU, \VISGONSIN.

SAW-HAMMERING MACHINE.

SPECIPICATICN forming part of Letters Patent No. 372,667, dated November 8, 1887,

Application filed January 6, 1887.

To all whom it may concern:

Be it known that I, WILLIAM GowEN, of Vausau, in the county of Marathon and State of \Visconsin, have invented a certain new and useful Saw Hammering Machine; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part ofthisspccification.

The object of my invention is to produce with facility and accuracy the proper tension in a'saw.

It consists, essentially, of an anvil, a hammer working therewith, mechanism for operating the hammer, a support for holding the saw in theproper position to be operated upon by said hammer, of mechanism for moving the saw-support and feeding the saw between the hammer and anvil, of mechanism for regulating the force of the blows struck by the hammer,and of other features hereinafter set forth.

In the accompanying drawings like letters designate the same parts in the several figures.

Figure 1 is a plan view of the machine; Fig. 2 is a side elevation of the same. Fig. 3 is an end elevation,on an enlarged scale,of the sliding frame supporting the hammer and its connections and of the ways in which it works. Fig. 4 is a side elevation of a portion of the same and of the screw by which said sliding frame is adjusted. Fig. 5.is a vertical medial section of the circular-saw:snpporting carriage and its connections. Fig. (5 is a crosssection taken on the line y y, Fig. 2, showing one of the machine-frame supports in detail; and Fig. 7 is a cross-section on a greatly enlarged scale, taken on the line a: a2, Figs. 1 and 2, showing the hammer-supporting frame and driving mechanism in side elevation.

The hand method of hammering saws, as heretofore practiced, is not only laborious, requiring skill and experience, but by it the work is at best imperfectly done, it being impossible to strike a series of blows by hand with the precision and uniform force which are necessary to produce the best results. To obviate the foregoing difficulties in hammering-saws by hand is my purpose in the following-described machine.

Serial No. 223,516. (No model.)

Referring to the drawings, N N represent the frame-work, which may be of any suitable form, material, and construction to support the operative parts of the machine. Upon this frame N are mounted the hammer-carriage M in transverse ways m m provided therefor, a cross picce, N, supporting the adjustable anvil B, the circular-saw-carriage O on longitudinal ways a it provided therefor, and the yoke P, adjustable lengthwise of said frame N in ways 1) 17, secured thereto. The hammer-carriage M is formed with planed tongues mm,engaging and working with similar grooves in the ways m m. A screw, R, with a hand-wheel, It, is swiveled next to said hand-wheel in afixed box, r, bolted to the ways in in, and works, as shown in Fig. 4, with a nut, m on the upper side of carriage M, which may be adjusted thereby transversely to the frame N of the machine.

In a standard, H, rising from one end of the carriage M is fixed and supported the shaft g, upon which is mounted the ratchet-wheels g and between said ratchet-wheels the hub of the vibrating hammer-arm A. About the hubs of the hammer-arm A and the ratchetwheels g" are placed spiral springs g g, which are attached at their inner ends to the opposite sides of said hammer-arm and at their outer ends to said ratchet-wheels. To the end of the hammer-shaft g opposite the standard H is keyed or otherwise axed the casting H. To suitable ears formed therefor on the standard H and casting H are pivoted dogs If h which engage with the ratchetwheels 9".

Upon the hubs h h, formed on the outer faces of the standard H and casting 11, about the hammer-shaft g, are journaled the lovers G G, to which are pivoted the pawls g 5 engaging the ratchet-whcels g g. In a sleeve or car formed on the free end of the arm A is secured, by means of a nut, a, the threaded shank of the hammer a, which is preferably made of steel, with a rounded face. The anvil B, also prefer-ab] y made of steel, wit-h a rounded working-face, is supported upon the crosspiece r and moved thereon with the adjustment of the carriage M and hammer a, and retained in the proper position to receive centrally the blows of said hammer by means of the arm B, which is secured at one end to said carriage M and at the other to an ear or flange, b, formed onsaid anvil, as shown in Figs. 1, 2, and 5.

In boxes h h, formed one upon the standard H and the other upon the casting H, is journaled the driving shaft E, upon which is mounted the hammer-actuating cam e, driving-pulley E, and friction-wheel E The shaft E is held in place endwise in its bearings by means of collars mounted thereon and bearing against the inner ends of the boxes h h, and is thereby caused to move with the hammer-shaft in the adjustment of the carriage M.

Upon one end of the shaft F, bearing in boxes ff, secured to the frame N of the machine, is mounted the friction-wheel F, which has a beveled face working with the similarlygrooved face of the friction-wheel E The shaft E, provided with a feather or spline to prevent them from turning thereon, moves endwise freely through the eyes of the pulley E and friction-wheel E which are connected or formed together and prevented from partaking of the cndwise movement of said shaft by the grooved face of said frictiouwheel E engaging the friction-wheel F.

G G are pulleys or drums arranged at opposite ends of the machine, to receive and support a band-saw in the proper position to be operated upon by the hammer. The shaft 0 of the drum, 0, nearest to the driving mechanism is journaled in boxes 01, swiveled to and depending from slides d cl, which are adjustable lengthwise of frame N in grooved ways provided therefor and secured to said frame. Upon the end of shaft 0, in position to engage the friction-wheel F on shalt F, is secured the larger friction-wheel D. The slide d adjacent to the friction-wheel D is connected with the upright limb of the bell-crank lever D, fulcrumed to frame N, as seen in Fig. 2, and a weight, D upon the horizontal limb of said lever retains the friction-wheel D in engagement with said friction-wheel F.

By reference to Figs. 2 and ,7 it will be seen that the Jir-iving-shaft E is placed above the shaftFand the shaftF in a position above the :shaft 0, and that the boxf, in which the shaft F bears adjacent to the friction-wheel F, is hinged to the frame N, as shown in Fig. 1. When the friction-wheel D is forced by lever D against said friction-wheel F, the latter is elevated, lifting the friction-wheel F into engagement with the friction-wheel E" on the drivingshaft E, from which motion is communicated through said friction-wheels to the pulley or drum 0, and the saw S thereby fed between the hammer and anvil parallel with the frame N. The slide (2 on the side of the machine opposite the lever D is longitudinally slotted and adjustably secured in place to frame N by means of the bolt cl, passing through the slot in the said slide, as shown in Fi l.

. The shaft 0' of the pulley or drum 0 bears 'in boxcs secured to and depending from the ends of the yoke P, overhanging the frame N,

as shown in Figs. 1 and2; By means of a screw, p pivoted at the end in an ear, 10, formed on the yoke P and engaging with a nut formed on a cross-bar, P, secured to the frame N of the machine, said yoke may be moved in its ways and the saw thereby sufliciently strained to be fed by the rotation of drum 0 between the hammer and anvil. To facilitate placing the saw on the drums O O, the hammershaft g and the driving-shaft E are supported at one end only upon the earriage M by means of the standard I-I, thereby leaving at their opposite ends a space or opening, through which the upper seetionof the saw may be inserted; and the supports N N, upon which the frame N rests, are formed at one side of the machine with hinged sections an, as shown in Figs. 2 and 6, so as to be opened to receive the lower section of the saw.

To support a circular saw in the proper position to be operated upon by the hammer a, I provide the carriage O with an upright journal, 0, upon which is mounted the bevelgear 0, as shown in Fig. 5. Upon the upper face of the hub of the gearo the saw Uis supported and secured by means of the collar 0 and a retaining-nut engaging a threaded pin, 9, projecting from the center of' said hub. Upon the shaft I, supported in suitable bearings provided therefor lengthwise of the frame N, is loosely mounted the bevel-gear i, which works through an opening in carriage O with the bevelgear o, and is prevented from turning upon said shaft by means of a spline or feather, while it is moved by projections 0 0 upon the carriage O lengthwise of said shaft and retained in engagement with the saw'supporting gear 0. Upon the opposite end of the shaft I, adjacent to the shaft F, is fixed a bevel-gcargf, working with a similar gear, f upon said shaft F, by means of which the shaft I and the gears i and 0 are driven.

To a projection, 0, on carriage O is adj ustably attached a rack-bar, T, supported at the opposite end in a suitable guidebearing formed upon or attached to the frame of the machine. Upon the adjacent end of shaft F is fixed the disk F having a single tooth,f, on its periphery, which engages at each revolution with a tooth on the rack-bar T, thereby moving the said carriage an interval lengthwise of the shaft I to each revolution made by the gear 0 and the saw U supported thereon.

My machine operates as follows:

First, when a band-saw is to be hammered, the collar 0 and center pin, 0", with thenut thereon, are removed, as seen in Fig. 2, or the entire saw-supporting gear 0, with its connections, may be lifted from its journal 0. The rack-bur T may be removed or disconnected from the disk F The sawS is then placed upon the drums or pulleys GO in the manner previously described, and the drum 0 adjusted by means of-the screw 19 to take up any slack in said saw and to cause the drum 0 to drive the same at the desired speed over the anvil B. In hammering a band-saw I prefer to hammer once around the longitudinal center thereof, and then to hammer in parallel lines equidistant from the center, alternating from one side thereofto the other. For this purpose a chalk-mark may be made upon the saw to indicate the starting-point, and the hammer a and anvil B, first set at the center of the saw, moved to either side by means of the screw R each time the starting-point indicated by the chalk-mark returns to said anvil. The ma chine being set in motion by means of suitable power applied thereto through the drivingpnlley E, the cam e, rotated as indicated by arrows, Figs. 1 and 2, and working with an extension of the hammer-arm A, alternately lifts and releases the hammer a. The springs g g,compressed or strained each time the hammer is lifted by the cam c, act through the hammer-arm A, and by their expansion cause the hammer, when it is released by said cam, to deal uniform blows of the desired force upon the saw over the center of anvil B. The force of the blows struck by the hammer may be regulated as desired by means of the levers G G and pawls 9 which work with the ratchet-wheels g" and operate to strain the springs g g. If the tension of the springs and the impetus imparted thereby to the hammer be too great, the dogs if if may be thrown out of engagement with the ratchet-wheels g and the latter turned backby the aid of said levers G G. Through the friction-wheels E F F and D, rotated as indicated by the arrows in Figs. land 2. the d rum C,and thereby the saw S, is driven from the shaft E. The operation is repeated, if necessary, as described until the saw has been opened up sufficiently at the center and the desired tension produced in the edges. By swinging the lever D outward or away from the shaft E the friction-wheel F is disengaged from the frictionwheel E, and the shafts c and F thereby disconnected from the driving-shaft 13.

Second. For hammering a circular saw, the saw U is secured to the hub of the gear 0, as shown in Fig. 5.and the hammer and anvil are set in their middle position in the longitudinal center of the machine. The carriage O is placed with reference to the anvil B so as to cause the hammer to strike the saw at the desired distance from the eye, and the machine then set in motion. The saw is slowly rotated by the gearsz' o and shaft I while the hammer strikes a circular series of uniform equidistant blows thereon. At the completion of each revolution the tooth f on disk F, engaging with a tooth of the rack T, moves the carriage O a certain interval away from the arvil, and the hammer deals in the manner described another series of blows concentric with those previously made. The operation is thus continued toward the rim of the saw until the desired tension is produced therein. 1f the .desired effect is not produced by the hammer in traversing the saw once,the attachment of the carriage O to the rack T may be changod,so as to cause the hammer to strike between the circular lines of blows previously made, and the operation repeated as before till the desired tension is attained in the rim of the saw. To straighten a saw that has been bent, the carriage maybe disconnected from the feeding mechanism and the saw supported thereon moved as desired by hand.

Devices different from those shown may be employed for supporting either a band or circular saw, and arranged to be moved by the operator without the automatic mechanism described. In short, various modifications may be made in the construction and arrangement of the several parts of my machine withoutdeparture from the principle of its operation or the spirit of my invention.

I do not claim, broadly, herein the combination, with the hammer and anvil, of a circularsaw support arranged to be moved toward and from said anvil, but make that the subjectmatter of an application filed January 18, 1887, and numbered 224,701.

I claim- 1. In a saw-hammering machine, the combination, with a hammer and anvil, ofa vibrating ham mer-arm, a shaft supporting said hammcrarl'n, a spring connecting said hammer with a ratchetwhcel, and a lever and pawl arranged to turn said ratchet-wheel and strain said spring, substantially as and for the purposes set forth.

2. In a saw-hammering machine, the coin bination, with a hammer and anvil, of mechanism arranged to operate said hammer, an adjustable spring arranged to impart an impetus to and to regulate the force of the blows of said hammer, a saw-supporting device arranged to hold the saw in position to be 0peratcd upon by said hammer, mechanism for moving the saw between said hammer and anvil, and mechanism arranged to change the relative positions of the saw and anvil, whereby the hammer is caused to deal a succession of :10

blows upon said saw in parallel lines, substantially as and for the purposes set forth.

3. The combination, in a saw-hammering machine, of the hammer and anvil, the driving-shaft provided with a pulley, E, and a wheel, E", working below its center with a wheel, F, on the shaft F, shaft F, bearing adjacent thereto in a movable box and carrying another wheel, F which works below its center with the wheel on the drum-shaft a, bearing adjacent thereto in a movable box, and a lever arranged to move said wheels into and out of engagement, substantially as and for the purposes set forth.

4:. The combination, in a saw-hammering machine, of a hammer and anvil adjustable transversely to the saw, mechanism for operating the hammer, and drn ms arranged to support the band-saw between said hammer and anvil, substantially as and for the purposes set forth.

5. The combination, in a saw-hammering machine, with supporting-drums, of a slide adjustable transversely to the saw, a hammer IIS and anvil carried by said slide, and mechanism arranged to feed the saw between said hammer and anvil, substantially as and for the purposes set forth.

6. The combination, in a saw-hammering machine, ofa laterally-adjustablc hammer and anvil, mechanism arranged to operate said hammer, drums arranged to support a bandsaw between said hammer and anvil, and a screw arranged to move said hammer and anvil together transversely to the saw, substantially as and for the purposes set forth.

7. The combination, in a saw-hammering machine, with a-hammcr and anvil, ofa frame, drums mounted thereon and arranged to support a band-saw in position to be operated upon by said hammer, and supports for said frame having a hinged or removable section to facilitate placing said saw upon said drums,substantially as and for purposes set forth.

8. The combination, in asaw-hammering machine, of a supporting-frame, a carriage movable transversely upon said frame, a hammer mounted upon said carriage, an anvil connected and movable therewith, mechanism for operating the hammer, and drums arranged to support a band saw in proper position to be' operated upon by said hammer, Substantially as and for the purposes set forth.

9. The combination in a saw-hammering machine, of band-saw-supporting drums, a carriage movable transversely to the saw, a hammer and its actuating-cam mounted upon said carriage, an anvil connected and movable therewith, and suitable gearing connecting the camshaft. with one of said drums, substantially as and for the purposes set forth.

10. The combination, in a saw-hammering machine, of the hammer and anvil, a circularsaw-supporting gearjournaled upon a carriage movable toward orfrom the anvil, a feathered shaft placed parallel with the ways upon which said carriage travels and connected by suitable gearing with the driving mechanism,and a gear mounted upon said feathered shaft and arranged to be moved with said carriage in engagement with the saw-supporting gear mounted thereon, substantially as and for the purposes set forth.

11. The combination, in a saw-hammering machine, of the hammer and anvil, a circularsaw-supporting carriage movable toward and from said anvil, a rack adjustably connected with said carriage, and a spur working with said rack and arranged to impart an intermitting movement to said carriage, substantially as and for the purposes set forth.

12. The combination, in a saw-hammering machine, of the hammer and anvil, a circularsaw-snpporting carriage and mandrel movable toward and from said anvil, a rack attaohed to said carriage, and a rotary shaft provided with a spur working with said rack and arranged to impart an intermitting movement to said carriage, substantially as and for the purposes set forth.

In testimony that I claim the foregoing as my own I aflix my signature in presence of two witnesses.

\VILLIAM GOYVEN.

Witnesses:

GHAs'L. Goss, E. G. AsMUs.

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