US417071A

US417071A - mumford

Info

Publication number: US417071A
Authority: US
Publication date: 1889-12-10
Anticipated expiration: 1906-12-10

Description

(No Model.) I 2 Sheets-Sheet 1. J. A. MUMFORD.

BARREL HEAD SAWING MACHINE. No. 417,071. Patented'Dec'. 10, 1889..

WLWOOQO (No Model.) 2 Sheets-Sheet 2.

J. A. MUMPORD.

BARREL HEAD SAWING MACHINE. No. 417,071. Patented Dec. 10, 1889.

:wwx vii/w wwmaoow Swudmtoz UNITED STATES PATENT OFFICE.

JOSEPH A. MUMFORD, OF ,I'lANTSPORfl, NOVA SCOTIA, CANADA.

BARREL-HEAD-SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 417,071, dated December 10, 1889. Application filed January 14, 1889. Serial No. 296,269- (No model.)

To ctZZ whom it may concern.

Be it known that I, JOSEPH A. MUMFORD, of l lantsport, Nova Scotia, Canada, have invented certain new and useful Improvements in Barrel-Head-Sawing Machines; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the letters of reference marked thereon.

This invention relates to an improvement in machines for sawing and beveling barrelheads, such as are commonly known as heading-turners, and has for its object to produce a simple, cheap, and effective machine adapted to saw barrelheads of varying sizes and be easily and readily operated by an ordinary workman or person not skilled in handling such machines.

To these ends the invention consists in a barrel-head turner having the saw and arbor mounted in a casting or table adjustably secured to its support or post in order to change the angle of the machine, and a frame or casting adj ustably secured to said first-mentioned table, and carrying a swinging frame, in which the barrel-head is clamped, with means for giving the head-elamping mechanism the necessary rotation for bringing every part of the periphery of the head into eo-operation with the saw, as will be presently explained.

The invention further consists in certain novel details of construction and arrangement and combination of parts, as will be hereinafter described, and pointed out in the claims at the end of this specification.

In the accompanying drawings, Figure l. is a perspective view of a lieadingturner constructed in accordance with my invention. Fig. 2 is a top plan view of the same; Fig. 3, a side elevation; and Fig. t a front elevation, showing the barrel-head clamped in position. Fig. 5 is a sectional view on the line 0c m, Fig. 2.

Similar letters of reference in the several figures indicate the same parts.

The main casting A, or table in which the bearings a a of the saw-arbor shaft B and driving-pulley C are located, is provided with means for auj ustablysecuring the same upon any suitable supportsuch as a post D or a bracket extending from the side walls of the building-such adjustable fastening means preferablybeingformedby thecurved bearing cl, held in position by the eyebolt d pivoted on a cross-belt (Win the bracket or post and capable of swinging in the slotd (shown in dotted lines, Fig. 3,) although other well-known forms of adjustable connections may be employed. The saw-arbor shaft Bispreferably located to one side of the support and extends way through both bearings a a, the saw being mounted on one end and a pulley a on the opposite end for driving the headclamp. The drive-pulley O, for the sake of economy and compactness, is mounted between the bearings a a. i

A casting or frame E is mounted on the table A at one side, and adjustably connected thereto by means of the bolt 6, working through slots e in said casting, suitable guides or ways 6 being provided to maintain the proper alignment of the castings, although, as is obvious, two or more bolts and slots may be employed to accomplish the same results.

Journals F F are formed in the rear portions of the table A and frame E, in which the shaft f takes its bearing, a pulleyf, driven by belt f from the small pulley a, being mounted on one end of the shaft, and a small gear or friction wheel F, near the opposite end, as shown in Fig. 2.

At the side of the frame or casting E, or at right angles to the journals F, are :formed journals G G, one at the front and the other at the rear of the frame, in which journals a shaft 11 takes its bearings, the gear or friction wheel h on its rear end en a in the small wheel F on the shaft f.

Below the shaft H, and preferably with said shaft as a center, is suspended a bifurcated frame I, between the two arms i z" of which are located the clamps K K for bold ing the barrel-head. Both clamps K K are mounted in bearings in the ends of the arms i i, so as to be capable of a rotary motion, the shaftcarrying the upper clamp having the bevel-gear L at the upper end, with which engages the small bevel-gear l on the end of shaft lI, whereby the said clamp is rotated by motion derived from the S2l-\\'-2Ll bor shaft through the instrumentalities mentioned.

In order now to bring the two clamps together, the lower one K is made adjustable vertically, and a small cam or leverk, having an operating-handle Z1, is located below the lower end of its supporting-shaft. Thus when said cam is turned the clamp K is elevated and the two clamps brought together. I preferably employ projections K on the lower clamp to assist in centering the head and to insure its rotation without danger of'being thrown out of position, and, if desired, similar projections may be employed on the upper clamp, particularly where the head is Very heavy.

As before intimated, the frame I is pivotally hung below the frame E, with. the shaft ll as a center of oscillation, and the bearing on which the frame turns may, if desired, be formed by said shaft, as shown in the draw ings, the shaft being simply passed through a sleeve M on the upper portion of the frame; or, if desired, the bearings may be formed by projections from the journals G G, similar in all respects to the ordinary well known cone bearing.

The saw N is preferably of the concave form universally employed in this class of machines.

The operation will now be readily understood. The board from which the head is to be formed or the partially completed head is placed on the lower clamp and properly positioned and centered. Said clamp, it will be particularly observed, is stationary and of sufficient area to give the proper support to the head. The cam lever is then swung around, and the clamp, with the head, is raised bodily and the head brought into contact with the upper revolving clamp, which first operates to press the head against the points on the lower clamp, and finally imparts thereto its rotary motion. The entire frame is swung toward the saw, as indicated in dotted lines, Fig. 4, and as the head is presented at an angle to the plane of the saw the proper bevel to lit the chine of the barrel is cut, and the head being revolved constantly in relation to the saw gives the necessary circular circumferential shape. If de sired, the handle 7t" may be grasped by the operator to swing the frame up to the saw; but it is obvious that any of the well-known foot-lever arrangements may be employed to accomplish the same result, or, for that matter, a foot-lever maybe employed to force the lower clamp up, as well as to swing the frame toward the saw, as will be readily understood by those skilled in the art.

As it may be desirable in some instances to incline the clamps, as well as the saw and frame, it may be easily accomplished by loosening the bolts connecting the tableA to the standard, shiftin g the table on its curved bearing, and setting the bolts up tight to hold the parts in adjusted position.

The saw-:n-bor shaft may be provided with a fast and loose pulley, as shown in Fig. 1, to which the drive-belt is applied, whereby the operator may easily start or stop the saw by shifting the belt.

It is obvious that the machine is susceptible of considerable alteration and modification without departing from the spirit of my invention, and I do not wish to be understood as limiting myself to the exact construction shown, and while in the machine shown I rely entirely upon the weight of the swinging frame and head-clamps to carry them away from the saw it is obvious that additional weight or springs may be employed to supplement such action, although these are, as a rule, foundunnecessary. If desired, also, the le ver for raising and lowering the lower clamp may be so constructed as to release the clamp when not held by the operator. Thus not only will the frame be returned to normal position, but the clamp will be released by gravity.

Having thus described my inventiomwhat I claim as new is Y 1. In a heading-turner, the combination,

with the saw, of the substantially horizontal clamps for the head, movable to and from the saw, consisting of the upper constantly-rotating clamp and the free lower clamp on which the head is placed, whereby the head may be properly positioned and centered before being caused to rotate, substantially as described.

2. In a heading-turner, the combination, with the saw, of the substantially horizontal clamp for the head, comprising the upperconstantly-rotating clamp and the lower free clamp, a frame swinging below a fixed center toward and from the saw, and hearings in said frame for the clamps, whereby the head may be positioned on the lower clamp before being rotated and presented to the saw, substantially as described.

The combination, with the saw-arbor shaft and the table in whichit takes its bearings rigidly mounted on the supporting-post, of the frame adj ustably connected to said table and carrying the head-clamps, whereby said clamps may be adjusted with relation to the saw for the accommodation of heads of different sizes, substantially as described.

4. The combination, with the saw-arbor shaft, the table in which it takes its bearings rigidly mounted on the supporting-post, and I the frame adj ustably connected to said table, of the gravitating head-clamps pivotally mounted on said frame and adapted to swing to and from the saw, whereby the clamps may be adjusted with relation to the saw for the accommodation of heads of different size, substantially as described.

5. The combination, with the saw-arbor shaft, the table on which it is mounted, and the pivoted head-clamps supported by said table and adapted to swing to and from the saw, of the supporting base or post and an adjustable connection between said table and base or standard, whereby the inclination of the table, saw, and clamps may be varied, substantially as described.

6. The combination, with. the saw and oscillating frame moving in a substantially vertical plane and having the rotating upper clamp mounted in'fixed bearings in the frame, of thelower clamp mounted in bearings in said frame and adjustable to and from the rotating clamp, substantially as described.

7. The combination, with the table having the saw and drive-pulley mounted thereon, the swinging frame connected thereto, the rotary clamps mounted in said frame, and the gear-wheel on the upper clamp, of the shaft on which the frame pivots, having the gearwheel engaging the wheel on the clamp and connected to the driving mechanism, substantially as described.

8. The combination, with the table and frame adjustably connected thereto, the sawarbor shaft mounted on said table, and the swinging frame mounted on said adjustable frame and carrying the" head-clamps, of the shaft having bearings on both said table and frame, with the pulley and belt driven from the saw-arbor shaft, and the shaft forming the pivot for the swinging frame, having the gear-Wheel engaging the gear on the headclamp and gearing connected to said lastmentioned shaft and the shaft driven from the saw-arbor shaft, substantially as described.

JOSEPH A. MUMFORD.

Witnesses:

JOSEPH FISH, W. M. CHRISTIE.