US296199A - Machine for crozing staves - Google Patents

Description

(No Model.) 4 Sheets-Sheet 1.

s. P. MAXWELL. MACHINE FOR GROZING STAVES..

No. 296,199.. Patented Apr. 1, 1884.

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s. F. MAXWELL.

MACHINE FOR GROZING STAVES. I 7 No. 296,199, Patented Apr. 1, 1884.

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UNITED, STATES SAMUEL F. MAX'WELL, OF CLIFTON, IVE-ST VIRGINIA.

MACHINE FOR CROZING STAVES.

SPECIFICATION forming part of Letters Patent No. 296,199, dated April 1, 1884:.

Application filed May 17, 1883. (N0 model.)

To all whom it may concern.-

Be it known that I, SAMUEL F. MAXWELL,

a citizen of the United States, residing at Glifton, in the county of Mason and State of (Vest 5 Virginia, have invented new and useful Improvements in Machines for Grozing Staves, of which the following is a specification.

My invention relates to machinesfor chainfering and crozing barrels; and the novelty consists in the construction, arrangement, and adaptation of parts as will be more fully hereinafter set forth, and specifically pointed out in the claims.

This invention has for its objects to provide novel and efiicient means for crozing and chamfering staves of different lengths; to provide means whereby short staves having been crozed and chamferedat one end can be again passed through the machine and crozed and chamfered at the opposite end; to provide means for supporting the stave-carriers and holding the staves well up to the cutters; to provide means whereby the distance between the carriers and the cutters can be varied; to provide for the adjustment of one carrier laterally toward or from the other carrier to accommodate short and long staves, and to provide a presser of novel construction for holding the staves on the carriers while they are being crozed and chamfered. These objects I accomplish in the manner and by the means hereinafter described and claimed, and as illustrated in the accompanying drawings, in which 5 Figure 1 is a longitudinal section of the machine. Fig. 2 is a side elevation. Fig. 3 is a top plan view, showing the springdeflector or means for arranging the blanks in a line upon the carrier. Fig. 4 is a transverse section taken through the line of Fig. 1.. Fig. 5 is a detail perspective of the presser-foot and its actuating-spring. 6 are detail perspective views of the severalcutters detached; and Fig. 7 is a detail perspective view of a single 5 carrier-link and its two adjacent open links,

which engage the projections on the sprocketwheel.

To enable others skilled in the art to which the invention relates to make and use the same, I will now describe the particular construction and mode of operation of the same,

reference beinghad to the accompanying draw- A designates the main shaft, having rigid pulley-connection a, with a suitable power, and a removable threaded sleeve, a, which 1s belted to a pulley, B, on the same, shaft Z),

with which is a pinion, Z1, which meshes with a gear-wheel, O, on the same shaft 0, with which is a pinion, c, which meshes with a gear-wheel, D, on the shaft d, which carries a sprocket-wheel, D. This, it will be observed, comprises a decreasing train of gear from the main shaft which carries the cutters, and must of necessity revolve rapidly, to the shaft (Z which carries the sprocket-wheel which impels the carriers, and which must have a slow uniform movement in order to properly feed the blanks to the cutters. In order that the movements of these cutters and carriers shall be uniform, I provide a belt-tightening device which will maintain the proper tension of the belt which operates over the pulleys ct B, which consists, essentially of the elbow-lever E, pivoted to the main frame X at e, to the end of which lever, at c, is loosely connected the link 6 which is in turn loosely connected to the elbow-lever c, pivoted to the main frame at e, and carrying a roller, e, which impinges upon the belt as the handle of the lever E is depressed.

It is sufficient for this description to say that the main frameX is stout, mounted upon rollers, and of such dimensions and form as to accommodate the several working devices shown.

It will be understood that the main shaft A carries two sets of removable cutters and drivers, two sprocket-wheels, D, which impel the carriers, that the said carriers comprise two endless chains passing along each side of the machine and over idle-pulleys (P, which are hung upon the shaft (P. The cutters are of similar dimensions and form, except as to their central bearing-apertures, which differ in respect to size, one being hung directly upon the shaft A and the other upon the sleeve K, which as yet is to be explained.

Upon the main shaft A is formed a collar, to, which serves as a bearing, against which one set of the cutters are clamped. This set of cutters is composed of the crozing-knife F, the crozing kerf-saw G, the chamfering-knifeH, and the end-saw J, which are arranged inthe order na1ned,-and are clamped against the said collar a by the threaded pulley a through the means of a disk, J, which has an extended bearing sleeve, j,againstwhichthe said thread- I in the ways 1), and the body of the block is ed pulley ct engages. The set of cutters and saws upon the opposite side are similar and have similar designating-letters; but it will be observed that they are clamped against a collar, k, upon a sleeve, K. This sleeve has an internal groove, 70, in which is arranged a spline, is, formed on the shaft A, which con nection forces the said sleeve K to revolve with the axle A, but allows it to have longitudinal adjustment thereon, a set-screw, 70 serving to hold the sleeve and shaft firmly together at any desired point of adjustment. The crozing-knife F, croze-saw G, chamfering-knife H, and end-saw J, having been placed in the order named upon the sleeve K, the disk J,

' sleeve 9', (a separate piece in this case,) and the fly-wheel L are placed upon the sleeve,

and the nut L screwed up to hold all the parts firmly together and against the collar k. My invention is designed to form a croze which shall have an abrupt kerf side, and a bottom at right angles with each other, and an incline extending outward from the bottom.

' afford to the corresponding part of the head an enlarged bearing,which would not chip off, would afford a suitable nailing-surface, and form an especially tight and firm joint. The

' particular form and adaptation of this croze constitutes the subject-matter of a separate application, and it is mentioned here only to the better understanding of the crozing-knife shown. The crozing-knife F has a stout shank; f, an outer surface corresponding to the circumference of its motion, a cuttingedge, f, which is inclined at an angle corresponding to that required in the croze, and a cutting-edge, f arranged parallel with the axis of motion and adapted to form the bot- .tom or cylindrical portion of the croze. These 1 knives by their shanks f are secured firmly in recesses f formed in the collar-frame F by bolts f. These recesses are formed out of line with each other in order to diffuse the strain,which is considerable, and would otherwise tend to break the collar F. I attach importance to this arrangement in its relation to the kerf-saw G. The chips formed by the cutto correspond with the circumference of the sprockets and idle-wheels, over which they pass. Each block \is provided with a metal plate, 1?, secured upon its upper surface, which plate has a projection, 10, against which the blank has a bearing, and each block P is provided at its sides with guideways 1). These guides B have horizontal flanges 1', which work In the completed barrel this bottom would form a cylindrical portion,which would adapted to pass between theguides. The face of the plate P has a contour approximating that of the knives and saws described, so that while the said plate firmly supports the blank at either end the cutting devices act upon the blank down closely to the face of the plate, yet not near enough to touch.

The guides Rare trough-shaped, and arranged at opposite sides of the machine, directly under the cutters, and are each preferably made of two sections, connected by transverse bolts r. Each guide is provided on its under side with hooks 1", which engage under the transverse bars S, and through the hooks pass set-screws 1' which are adapted to bind against the said bars, and thus hold the troughs in proper relative position. By loosening the set-screws at the left of the machine the guide R can be adjusted toward or from the guide at the right of the machine. The object of this is to permit the adjustment of the guide to correspond with the longitudinal adjustment of the cutters carried by the sleeve K, so that the guide will always lie directly under these cutters. Of course, when the guide is adjusted on the bars S, one of the idlepulleys d and one of the sprocket-wheels D will be correspondingly adjusted to bring the endless carrier at the left of the machine into,

proper alignment with its guide. The guide R, at the right of the machine, is capable of adjustment in the same manner as the opposite guide, but simply for the purpose of bringing it into proper position relative to the cutters above it. The bars S are'capable of being adjusted vertically, and for this purpose I provide the ends of the bars with depending arms 8*, having screw-threaded sockets, in

which are arranged screws 8 having heads 8 resting below projections s of the frame of the machine. By turning these screws in one direction the bars S will be elevated, and by turning the screws in the opposite direction said bars will be lowered, and in this way the distance between the cutters and the guides and carriers may be changed to provide for blanks of varying thicknesses and to regulate the depth of out.

In order that all the blanks shall be presented to the cutters in a direct line I provide a guide, T, upon the right-hand side of the machine, looking in the direction of travel of the carriers. Secured to the opposite side of the machine is a spring-guide, T, the province of which is to engage the ends of the blanks and force them over against the guide upon the right-hand side, the spring force being sufficient to insure the .proper movement of each and all of the blanks, yet accommodating readily the different lengths thereof. The cutters upon the left-hand side, it will be remembered, are readily adjusted so as to treat any desired length of staves within the capacity of the machine. It being desired then to produce a series of staves of a length of, say, thirty inches, all the blanks which are fully that length or I more will be finished complete at a single opmechanism for adjusting the sleeve along the shorter length will result.

eration. It frequently occurs, however, that blanks considerably shorter will be fed to the machine, in which case they will be properly crozed up on the end corresponding to the righthand side of the machine. According to my fnvention it is only necessary to readjust the left-h and cutters to the shorter blanks, remove the right-hand cutters, and pass the unfinished staves again through the machine without regard to either particular end being in one particular direction, when a finished stave of a This automatic guide 'I" is secured to the main frame in any proper manner which will allow its adjustment to give greater or less spring force.

It will be obvious that after the blanks have been properly adjusted in a line, and while they are being operated upon by the cutters, they must be firmly held against movement, and for this purpose Iprovide a spring-presser foot, U, upon either side, which foot is properly secured to the main frame and acts upon the blanks at a point directly over the carrier chains. Each presser-foot is provided with a vertical threadedarm, a, which is adapted to operate loosely through an aperture, at, above,

and a nut, a, to limit its downward stroke. Each foot has also upon its upper surface a locking guide-arm, n, which operates as a guide, and a look through a slot, '0, in a stout curved spring, V. This spring is adapted to act with a constant force to hold the presserfoot firmly upon the blanks, and its spring force is adjusted by belts o upon either end and nuts.

Having thus described my invention, What I claim is- 1. In a machine for crozing and chamfering barrelstaves, the combination of a revolving shaft having rigidly-attached cutters at one end and longitudinally-movable cutters at the other end, with traveling carriers for moving the staves past the cutters, mechanism for adjusting the movable cutters along the shaft, and devices for adjusting one of the carriers toward and from. the other carrier independently of the adjustment of the longitudinally.- movable cutters, substantially as described.

2. In a machine for crozing and chamfering staves, the combination of a'revolving shaft having rigidly-attached cutters at one end and longitudinally-rnovable cutters at the other end, horizontal bars supported below the cutter-shaft, trouglrshaped guides arranged on the bars, carriers traveling in the guides to move the staves past the cutters, mechanism for adjusting the movable cutters along the shaft, and devices for adjusting one of the guides and its carrier along the bar independently of the longitudinal adjustment of the movable cutters, substantially as described.

3. In a machine for crozing and chamfering staves, the combination of a revolving shaft having cutters rigidly attached thereto at one end, a sliding sleeve arranged on the other end of the shaft, and carrying attached cutters,

shaft, horizontal bars arranged beneath the shaft, trough-shaped guides supported on the bars, carriers traveling in the guides, and devices for adjusting one trough and its carrier alongthe bar independently of the longitudinal adjustment of the same on the revolving shaft, substantially as described.

4. In a machine for crozing and chamfering staves, the combination of a revolving shaft having at one end rigidly-attached cutters and at the opposite end longitudinally-movable cutters, with trough-shaped guides, carriers travelin gin the guides, and independent mechanism for adjusting the movable cutters and one of the guides and its carrier in dependently of the adjustmeiit of each other, whereby the guide can be first adjusted and the movable cutters subsequently adjusted to coincide with the adjustment of the trough and its carrier, substantially asidescribed.

5. In amaehine for crozing and chamfering staves, the combination of the revolving shaft having,rigidly-attached cutters at one end and longitudinally-movable cutters at the other end, with mechanism for adjusting the movable cuttcrs along the shaft, the horizontal bars beneath the shaft, the trough. shaped guides having hooks on their under sides which engage the bars, the carriers traveling in the guides, and devices for clamping the hooks to the bars and permitting the guides and carriers to be adjusted independently of the longitudinal adjustment of the movable cutters on the shaft, substantially as described.

6. The combination, with the revolving shaft having croze-cutters at each end, and those at one end capable of longitudinal adjustment, of stave-carriers, carrier-guides, and means such substantially as described for adjusting both guides vertically and one guide toward or from the other guide to correspond to the lateral adjustment of the cutters at one end of the shaft, substantially as described.

7. The combination of the revolving shaft having crozing-outters at each end, those at one end being capable of longitudinal adjust ment, the carriers, the carrier-guides having hooks on their under sides, the transverse bars with which said hooks engage, and setscrews clamping the hooks 011 the bars and permit ting the guides to be adjusted thereon inde- IIO pendently of the longitudinal adjustment of I20

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