US98735A - Improvement in machine for jointing barrel-staves - Google Patents

Description

1 aient lim* JOHNY B. BELL, 0F PITTSBURG, PENNSYLVANIA.

Letters Patent No. 98,735, (lated January 11, 1870.

IMPROVEMENT IN MACHINE FOR JOINTING- BARREL-STAVES.

n The Schedule referred to in these Letters Patent and making part of the same To all 'whom it 'may concern.-

Be it known that I, JOHN B. BELL, of Pittsburg, in the county of Allegheny, and State of Pennsylvania,

have invented a new and useful Improvement in Machinefor J ointing Staves for Barrels, Gasks, 85e.; and I do hereby declare that the following is a full, clear, and exact description thereof', reference being had to the accompanying drawing, and to the letters and iigures of reference marked thereon.

The nature of my invention consists in the feedingframe, constructed, arranged, and operating-in combination with a vertical cylinder, provided with cutting-bits, as hereinafter described.

To enable others skilled in the art to make and use my invention, I will proceed to describe its constructioujand operation.

In the accompanying drawings, which form part of my specitication.-

Figure l is a side elevation of my improvement in machine for jointing staves.

4 Figure 2 represents a top view or pla-n of the same, with the upper portion ofthe frame removed.

In the accompanying drawings- A B C represent the several parts of theframe, in which the cylinder D rotates.

e represents the cutting-kuives or bits, which are arranged in the face of the cylinder D, obliquely to its longitudinal plane, and at an angle to its face corresponding to the back inclination ofthe bit ofthe ordinary hand-plane.v

By thus arranging the knives or4 cutting-bits, their cutting-action will be from the centre of the edge of the stave and toward each end of it, Ithe cutting being on au oblique line, and with the grain ofthe wood.

The uner ends of the knives should project past each other, as shown in fig.- 1, and the desired cnt-tingset given'by means of a suitable gauge.

'lhe cylinder D is gradually contracted toward the centre, as indicated by the dotted lines 5. This contraction of the cylinder must correspond to the bilge of the stave.

The frame or bench f, for supporting and holding the stave while being jointed, is pivoted in the` ends A and B of the frame in Vwhich the cylinder rotates,- and is provided with a clamping-lever, g', points 3, and

a notch, 2. l

The distance from the point of pivot 6 to the face 8, of the frame or bench, should be equal to half the diameter'of the keg, barrel, or cask, for which the stave is'intended. By thu's arranging the frame or bench,

the cutting-action of the knives or bits will be on a line at right angles to a line radiating from the centre of the cylinder, as indicated by dotted lines 4 in Iig. 2. The operation of my imprmfed staye-jointing machine is as follows:

Thelstave s is placed on the frame or bench j, the lower end of the stave. is placed in notch- 2, and, by

pressing'on lever g, the stave will be held rmly in notch 2, and forced against the face 8 of the frame or bench, and the points 3 will prevent any side movemeut. Now, by turning the frame or bench f to 'the right, and then to the left, against the cylinder as indicated by the dotted lines :v1 and ce, the edge of the stave will be perfectly and uniformly dressed-and jointed. t

The cylinder D should be rapidly rotated, and may be placed in a vertical or horizontal posit-ion, and be provided with one or more frames or benches f, so that one or more persons, at the saine time, may joint staves.

The frame or bench finay be so constructed as `to adapt it to stavcs of different lengths, and so pivoted that in jointing the stave, the outside portion of the seam, between the staves, may be open' or otherwise.

Having thus described my improvement,

The pivoted frame f, constructed, arranged, and op. erating as herein described, in combination with the cylinder D, as and for the purpose set forth.

Y JOHN B. BELL.

Witnesses:

JAMES THOMPSON, JAMES J. JOHNSTON.

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