IMPROVEMENTS IN THE MANUFACTURE OF CASK STAVES AND IN APPARATUS THEREFOR."
Year: 1879

page_text: LETTERS PATENT to Herbert John Haddan, of the Firm of Herbert and
Company, Solicitors of Patents, of 67, Strand, in the City of Westminster,
Civil Engineer, for the Invention of "IMPROVEMENTS IN THE MANUFACTURE
OF CASK STAVES AND IN APPARATUS THEREFOR." A communication from
abroad by Alexis Lainé, of Harcourt, in the Republic of France.”
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at the
Office of the Commissioners of Patents on the 29th April 1879.
"
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer. IMPROVE-
MENTS IN THE MANUFACTURE OF CASK STAVES AND IN APPARATUS THEREFOR.”
A communication from abroad by Alexis Lainé, of Harcourt, in the Republic of
France.
The Invention has for its object the manufacture of staves for casks by machinery
with the least possible waste of timber; it is divided into three different parts which
may correspond to as many different machines. The first process or part of the
Invention consists in sawing the stave from the block of timber (preferably by a
horizontally reciprocating saw) in such a manner that the table upon which the
block is fixed obtains a rotary or oscillating motion in a plane intersecting the line
in which the saw moves so as to produce curved staves directly by sawing, the
thickness of the stave being determined by adjustable guides or stops, and the
motion of the table, variable according to the radius of the cask, may be derived
from the mainshaft by means of connecting rod, ratchet wheel, and tooth wheels, or
in any other suitable way. The second process consists in planing or shaping the
sides of the stave by fixing the latter by means of a parallelogram or otherwise
upon a table in front of a revolving disc provided with knives at its concave face
so as to bulge the stave in the centre. The third part of the Invention consists of
an apparatus which simultaneously cuts off both ends of the stave, produces the
notches and the chamfer. This is effected by means of two revolving circular discs
fixed upon a shaft near the two ends of it, each disc provided with a circular saw and
cutting tools for producing the notch and the chamfer, the stave being placed
parallel to the shaft upon a movable table or frame and pressed by the latter against
the circumference of the discs.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Herbert John Haddan in the Great Seal Patent Office on the 29th
October 1879.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer.
"
" IMPROVE-
MENTS IN THE MANUFACTURE OF CASK STAVES AND IN APPARATUS THEREFOR.'
A communication from abroad by Alexis Lainé, of Harcourt, in the Republic of
France."
The Invention has for its object the manufacture of staves for casks by machinery
with the least possible waste of timber; it is divided into three different parts which
may correspond to as many different machines.
The first process or part of the Invention consists in sawing the stave from the
block of timber (preferably by a horizontal reciprocating saw) in such a manner
that the table upon which the block is fixed obtains a rotary or oscillating motion
in a plane intersecting the line in which the saw moves so as to produce curved
staves directly by sawing, the thickness of the stave being determined by adjustable
guides or stops, and the motion of the table, variable according to the radius of the
cask, may be derived from the mainshaft by means of connecting rod, ratchet wheol,
and tooth wheels, or in any other suitable way.
The second process consists in planing or shaping the sides of the stave by fixing
the latter by means of a parallelogram or otherwise upon a table in front of a
revolving disc provided with knives at its concave face so as to bulge the stave
in the centre.
The third part of the Invention consists of an apparatus which simultaneously
cuts off both ends of the stave, produces the notches and the chamfer.
This is
effected by means of two revolving circular discs fixed upon a shaft near the two
ends of it, each disc provided with a circular saw and cutting tools for producing
the notch and the chamfer, the stave being placed parallel to the shaft upon a
movable table or frame and pressed by the latter against the circumference of the
discs.
The construction of the machinery will be better understood by reference to the
accompanying Drawings, Figs. 1, 2, 3, which represent the three different stages of
the process, and in which
a is a fly wheel; b, main crank; 61, the fly wheel shaft; c, c, driving pulleys;
d, driving belt; f, bearing provided with bushes; f', cover of bearing; h, wrought
iron main connecting rod; i, table for the raw material; l, connecting rod; m,
machine frame; n, stop ratchet; o, ratchet wheel; P, pinion; q, rack; r, hand
lever; 8, link for the rack; t, horizontal saw; u, fixed pin connecting h with u;
v, rod for elevating the table; x, bracket provided with bushes; c', top of bearing
for the axle of the toothed wheel; y, movable guide for regulating the thickness of
the stave; 3, adjusting screws for the guides; 2, pin on which the table turns.
In Fig. 2 is, A, a wooden wheel flat on one side and hollowed out on the other;
B, axle of the wheel A; C, C', shaping knife; D, parallelogram or guide for holding
the stave during the operation; H, H¹, pivots of the parallelogram; I, gauges
serving to determine the width of the stave and for giving it the required
inclination; J, machine frame; K, K¹, driving pulleys; M, M', toolholders; O,
stop pieces of the parallelogram; P, support for the stave; U, bearing; L, driving
belt.
In Fig. 3, L is the driving belt; Q, disc provided with tools R, R¹, S, S¹, and
T, T, for producing the notches, chamfering, and cutting the staves to the required
length; U, bearings; V, machine frame; X. X, guide turning on a pivot and
holding the stave during the operation; Z, Z1, driving pulleys.
In using the apparatus the inventor proceeds as follows:-
The raw material is placed in the table i and the rack q put in gear with the

page_text: pinion p by means of the rod 8 and lever r, the pinion being set in motion by the
ratchet wheel o moved by the rod l. The horizontal saw t driven by the connecting
rod h and the main crank b cuts the wood to the exact thickness required for the
stave, this thickness being regulated by the movable guides y by means of the
screws 3. The rack serves to obtain at the same time the camber by lifting the
rod v, which being fixed with one end under the table i causes the latter to describe
a circular arc depending on the greater or smaller distance from the pivots 2' of
the table.
Subsequently the stave is taken to the second machine or instrument where it is
placed between the disc A and the parallelogram D, being held by the brackets I.
The knife disc A having a concave face produces the curvature of the staves direct
by means of the shaping knives C, C¹, without it being necessary to bend the staves
as usual.
The operation is then continued by placing the stave between the pivoted guide
X and the wheel Q which is provided at the same time with instruments for
forming the notches as well as for chamfering and cutting off the two ends of the
staves.
The size of the various parts depends upon the size of the casks to be made, and
the means of transmitting the motive power to the various tools may be altered
without departing from the principle of the Invention.
CLAIM.
The method of manufacturing cask staves, and the construction and shape of the
working parts of the apparatus therefor, substantially as described and illustrated:
In witness whereof, I, the said Herbert John Haddan, have hereunto set my
hand and seal, this Twenty eighth day of October, A.D. 1879.
H J HADDAN
(LS)