Machine for dressing and jointing staves
US 1687 A
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Description (OCR text may contain errors)
UNITE STATES H. LAW, OF WILMINGTON, NORTH CAROLINA.
MACHINE FOR DRESSING AND J' OINTIN Gr STAVES.
Specification of Letters Patent No. 1,687, dated July 15, 1840.
To all whom, t may concern:
Be it known that I, H. LAW, of VVilmington, in the county of New Hanover and State of North Carolina, have invented a new and useful Machine for Dressing Staves for Barrels and other Vessels of Coopers Ware, Using Therefor Rived Timber, Slabs from Sawmills, and other Stuff of Similar Character, by means of which machine the stuff, after being cut to the proper length, is dressed on both sides and jointed on its edges at one operation; and I do hereby declare that the following is Va full and eXact description thereof.
In the accompanying drawing, Figures l, and 2, represent the machine in perspective, and are to be considered as united together at A, A', so as to constitute but one figure; Fig. 3, is a portion of Fig. 2, removed for the purpose of showing the parts more clearly. Fig. 4- is a vertical section through Fig. l, in the line a, b.
B, B, are two cheeks, forming the side pieces of a groove, or channel, within which the lengths of stuff to be dressed, are to be dropped, or fed, and within which also they are to be forced forward against the cutting parts of the machine; the forcing forward being effected by means of a follower C, C, made to traverse back and forth within the groove, by steam, water, or other power, the traversing motion being produced by a crank, or other ordinary device for giving such reciprocating motion. The pieces to be dressed are to be fed into the channel at the part D, D. These pieces may be dropped into said channel singly, or they may be placed upon each other either edgewise, or flatwise, according to the position in which the machine is placed. uWhen they are to be placed edgewise upon each other, the cheeks B, B, must be widened out at the part D, D, so as to form a kind of narrow hopper; and in this case the lower piece will be propelled by the follower, and another will fall down on its withdrawal. If fed in iatwise, the part of the cheek marked B', which is represented as hinged, may be re? moved, and a trough, or hopper, be, in like manner placed above it.
E, E', are two plane stocks,each having a series of irons, which irons may be aiXed in place in the ordinary mode of wedging, or by means of screws, or otherwise. The stock E, has the irons rounding, to dress the inside ofthe stave hollow, and in this I have four irons; a good and sufhcient number,
they being soset as to act in succession uponV the stuff. The stock E, has but three irons, which are hollowed on their cutting edges, so as to form the outside of the stave. The
number of irons may, of course, be varied,
determine the width of the staves; these strips may be changed, and the distance varied, by means of the set screws e, e, c, and the screws f, 7, by which the plane stocks are bolted down to the bed G, Gr, of the machine.
The curved part is in like manner confined and adjusted by means of the screws p 79",
and (l, e
As the rived stuff, or slabs, will frequently be too thick, or too wide, to enter into the space H, between the faces of the two plane stocks, and the two strips F, F, I arm the end of the plane stock E, with a frow, or cutting edge, as seen at I, which is flush, on its inner side, with the face of the plane; this serves to cut off any superfluous stuff, and to reduce it in thickness to the required degree. Tol reduce the width of such pieces as may require it, I also place a cutting knife, or Vfrow, on the fore end of the strip F, as shown at J, which frow is flush with the lower side of said strip.
Fig. 6, is a represe-ntation of the plane stock E, removed from its place; as in this stock the irons g, h, z', 7', are to cut the stuff in succession, and are set out, or project forward in the order of the letters, and as it is necessary that they should be set rank, so as to cut to a considerable depth, the face of the rounding part of the plane is reduced from the back of each cutting edge, to the front of the cutting edge next behind it, for, it is manifest, that the staves would otherwise become wedged, or jammed, in passing from one to the other; the back ends of the faces of the planes must necessarily be as much nearer to each other than the frontends as is equal to the whole thickness to be taken off from the stud; what is said, therefore, of reducing the faces, will apply equally to the face of each plane; a longitudinal section through the middle of the face of each plane would consequently present a line resembling that marked 7c, Z. I nd it useful to place a spring m, on the face Vof the plane E, to press against the staves are thus prepared for beingV jointed on their edges, Which is so effected by the curved.'
part of the machine, Figs. 2, and 8, as to diminish them inividtli from'the middle to- VWard eac'hendin such degree `as to give the j 1 the curved box, thus allowing the space O,
proper bulge to the bari-el when finished.
- K, K, is a curved box into Which the staves pass 4immediately, after theyleave the planes E, E', and at the bottom and top of this box Vthere is a series of'jointing irons placed near t0 each other, by ivhichthe two edges of the staves are to be jointed. These irons being Y placed near to eachV other; it is not necessary in the" operationof jointing, to reduce the faces of the stocks in Which they are set, as is done with the dressing planes.
As the staves VWhen they leave the dressing planes are straight, longitudinally, it is manifest that in passing along the curved box, their `ends' Willbe in contact With the concave side of the interior thereof, and
their niiddles against, or approaching toV Ward, its convex side, and thatV in conseT quence of this the ends will be jointed by those portions of the plane irons which are against the concave, and their middles by the portion toward" the convex side, and so of the intermediate parts. The bottom of this box, with its series of plane irons, is lsfeell .at
L, L; the upper plane stock, Vforining the top of this box is shown separately at M M,
. Fig. 3. The faces of the plane stocks form- ,ing the bottom and'top of .thisbox are not parallel to each other, either longitudinally or transversely, being of necessity nearer to each at the delveryend of the jointed stave,
than at the part Where it enters. Transversely, the faces of these planes are much nearer to each other toward the concave than they are toward the convex side of the iii- L, being the lower, and M, the upper plane stock, and N, the space between them in the curved box; the dotted lines m', m', represent the insertions ofthe plane irons; n, the concaveand 0, the convex side of the box.
Y The bed G, G, of the machine is cut away in the middle along the extent ofthe planes of in accordance With the lessened diameter` of the barrel'which they are to'form..v
i Having thus, fiilly described thema-nner in which 'I construct my machine `for the dressing and jointing of staves froinyrived timber, slabs, Snc., A.and having also explained the roperation thereof, what l claim as constituti-ng my invention therein, and which I desire :to secure by 1 Letters Patent, is-
1 Theinanner ,ofconstructingand coinbining the part fordressing the faces of the staves, aS set forth, with the curved box, constructed as set forth, and 'furnishedWi-th a series .of jointing irons contained in stocks forming the upper and lower `portions of said box; the faces ofk said plane stocks approaching'each other on the concave ,side of the nteriorof said box, `for the purpose, `and operating substantially in the manner, herein set forth.
2. I Valso claim `the said curved box,` for jointing staves, inwiits 4individual capacity, the respective partsV thereof being` constructed, and connected', Aas herein described.
VMfW. Efiiiiis, j J CHN C.: SAVAGE.,