US71276A - Francis - Google Patents

Description

@nite-h 11mm @anni @ffice FRNIS O. GIM-IRK, OF BENTONS PORT, IOWA, ASSIGNOR TO HIMSELF ANI) JOHN E. REININGHUS, OF THE SAME. PLACE.

Letters Patent No. 71,276, dated November 26,1867.

IMPROVEMENT IN STAVE-MAGIIINES.

TO ALL WI-IOM IT MAY CONCERN: l v

Be it `known that I, FRANCIS O. CLARK, of Bcntons Port, in the county of Van Buren, and State of Iowa, have invented a new and improved Machine for Sewing and Jointing Staves and I do hereby declare that the following is a full7 clear, and exact description tl1ereoi',refcrence being had to the accompanying drawings, making a part of this specification, in which- FigureI 1 is a top view.' ot" the improved machine.

Figure 2 is a longitudinal section, taken through fig. 1, in the vertical plane indicated by red line :e z.

Figure Slis'a transverse section through figs. 1 and 2, taken in the vertical plane indicated by red line y y.

Figure 4 is a top view, showing the two inclined jointingsaws and their ladjustable frames.

Similar letters of reference indicate corresponding parts inthe several iigures,

This invention is designed for sawing barrel-staves from bloclrsof the proper curved form, and then jointing such stavcs so that they will t neatly together when hooped in the form of a barrel.

The nature of the first part'of my invention consists in combining a circular saw, of proper shape, with a circularly movable bed, in such manner that staves can he conveniently, and with great facility, sawed fromv blocks of wood conned upon said bed, as will'be hereinafter explained. v 'A The nature ofthe second part 0E my invention consists in the employment of two inclined circular saws upon adjustable frames, in combination with a rectilinear reciprocating carriage, which is provided with means which the curved staves can be firmly held in about the position they would assume when hooped in'- barrelw form, and while thus held presented to the inclined saws and their edges properly jointed, as will be hereinafter described. i Y

" To enable others skilled in the art to understand-my invention, I will describe its construction and operation.

In the accompanying drawings, A represents the table or frame upon which the improved devices for cutting. staves from blocks and jointing them are applied. Transversely across the top B of the table, a curved groove or channelLa, is made, the edges of which are undercut, so as' to form a doveetail groove for receiving the cir cularly movable slide or carriage C, and keeping this slide down in place. To the ends of the slide C, headpieces lfb are secured, between which the blocks from which staves are cut are coniined-by means of spurs and clamping-scrcws or other suitable means. The stares are sawedrfrom the blocks confined upon said slide by means of a circular saw, D, which is applied to an arbor., c, that has its bearings in 'journal-boxes applied on top ofthe frame A, beneath the bed B, as shown in tig. 2. Upon the arbor c a pulley, c, is keyed, over which a belt passes, that transmits motion to the saw-arbor from a pulley or drum upon the main driving-shaft E. It willbe seen, by reference to the drawings, figs. 1 and 2, that thc circular saw' D is (lished, so that its concave face is presented next the work, Jthereby causing it to conform tov the curvature of the staves 'and block from which .the staves are sawed. The curve which is given to the staves sawed from the blocks by saw I) is considel erably less than the curve or bulge which tbtsegstaves are made to take when hooped in barrels. The staves which have been sawed fromthe blocks vhare removed to the transversely' sliding carriage F, and jointed byv means of thc two inclined saws G G. The carriage F is slotted longitudinally, so, as to receive through it the two saws, and to allow of their being adjusted in diicrent planes, and set to run at diierent distances apart.- Ncar the front end of theA carriage F is a standarmd, to which a right-angular clamping-lever, cl, is pivoted, the object of lwhich is to bend and hold down one end of a'stavc while it is being jointed bythe saws G G.' The other end of thestave is held down by means of the clamp c, which is acted upon by the set-screw c. The washer on this screw is made adjustable so as to admit and confine the ends of stavs which vary in thickness; and this clamp entire is inside adjustable on the table so as yto accommodate staves of different lengths. At anv intermediate point between the two elampsabo've mentioned, a block, f, is applied, and held in place by means of studs entering holes made through the carriage F, as shown. in fig. 3. This block is made removable as well as adjustable ;-removabie, in order to substitute .higher blocks for loirgstaves; adjustable, so as to bring it 's centrally between the clamps for short" staves. By means of said clamps and bulge 'blocks the stave-s can be secured, one at a time, upon the carriage F, and held in the bent form they are required to takewhen" hooped together in barrels. The staves are thus held while the carriage is moved forward, and the saws Gr dress their edges, or, what is technically termed, joint them. The saws Gr G are required to'be held in planes radiating from a centre, which would coincide with the centre ofthe barrel which it is desired to make. These saws are fast upon the ends of arbors gg, which have their bearings in rectangular frames h h, th'at incline in opposite directions, as shown in'igs. 2I and al. The saw-frames are supported in guide-frames jj, so` that the former can be adjusted in a direction with the length of the sawshafts by means of lever'c; and these guidei frames are supported upon the table-frame A. by means of trnnnions zz', so that the saw and guide-frames can be-raised or depressed at Vtheir outer ends, and the saws adjusted and set to work at any given angle with respect to the table-top. The lever le, by means of which the saws and their frames L L are adjusted nearer together or set further apart, according to the width of stave tobe jointed, is connected to the saw'frames by means of jointed links /c 7c', acting like toggle-levers. These links are of a bell-crank form, or nearly so, in order thattheir angle or corner may be nearly as high as the pivot by which they are connected to the straight moving inclined bearings or frames 7L lr, and thus produce a thrust upon said frames nearlyin a line with the direction in which the bearings or frames move. `The outer ends ofthe guide-frames jj are raised or depressed by means of levers Z, which pass through slotted hangers m, at the front of the table A, and are held fast by means of' pins passed through said hangers. Lever 1c is similarly secured when the saws are adjustedat the proper distance apart. The arbors gg are rotated by means of belts passing over pulleys, which are on these arbors, and on the main driving-shaft E. i

It will be seen from the above description that I first saw the staves from blocks or bolts, of a form approaching that which they are required to take when hooped 'together'. I then bend and clamp the staves'or stave-blanks upon a sliding carriage, and run them between two properly inclined saws, which give therequired bevel or joint to the edges of the stares, so that when put together they will tit snugly and tightly. The two operationsl are conducted upon the same table, and by means of' saws which are rotpted by a single driving shaft, with belts for transmitting the motion, as above described.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The curved carriage C fitted into a channel'of the table B in the relation to a dish-saw, and flush with the top ofthe table, the said carriage and table constituting parts oi' a stave-sawing machine, and the carriage being provided with head-blocks, a clamping device, and the table with gauges, all substantially in the manner and for the purpose herein described.

2. The table B of a stave-sawing machine, with a channel of curved form horizontally, and of" a dove-tail form vertically, out down into it so as to form a depressed bed for the carriage C, and also guides therefor, substantially as and for the purpose set forth. l

3. .Tointing-saws, mounted on inclined arbors, which are supported upon straight moving-endwise adjust able bearings 7i li, which are operated by the devices `shown, or the equivalents thereof, substantially as described. i

4. The jointing-saws, mounted upon inclined arbors, which are supported upon straight moving-endwise adjustable bearings it It, which are operated by the devices shown, or their equivalents, in combination with the vertically vibrating frames j y', operated by the devices shown, or their equivalents, substantially as described. l 5. The combination of' the straight moving-endwisc adjustable bearings or frames t t, carrying inclined arbors with jointing-saws upon them, the toggle-joint, formed of bent links k 7c and the lever 7c, for the purposof of adjusting the saws at any desired distance apart, without changing their angle of' inclination, substantially `as described.

6. Providing for both adjusting the saws farther apart without changing their angle of inclination, and for changing the angle of inclination, when desired, in the one machine, by the means substantiallyas described.

7. rlhe adjustable clamp e e', for accommodating one of the ends oi' different thicknesses of staves, in combination with the lever-clamp d, substantially as described. f`"`"- 8. Making the bilge-block both removable and adjustable bet'hzeen the clamps d e. for the purpose of bilging diiierent lengths of staves, substantially as' described.

' FRANCIS O. CLARK.,

Witnesses:

Erw. Scnsnnn, Een. F.' BROWN.

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