IMPROVEMENTS IN AND APPLICABLE TO CLOG BLOCKS, AND IN APPARATUS FOR EFFECTING THE SAME.
Year: 1876

page_text: LETTERS PATENT to Robert John Jones, of Liverpool, in the County of Lan-
caster, for the Invention of "IMPROVEMENTS IN AND APPLICABLE TO CLOG
BLOCKS, AND IN APPARATUS FOR EFFECTING THE SAME.'
Sealed the 9th September 1876, and dated the 10th July 1876.
PROVISIONAL SPECIFICATION left by the said Robert John Jones at the
Office of the Commissioners of Patents on the 10th July 1876.
" IMPROVE-
ROBERT JOHN JONES, of Liverpool, in the County of Lancaster.
MENTS IN AND APPLICABLE TO CLOG BLOCKS, AND IN APPARATUS FOR EFFECTING
THE SAME."
My Invention relates to a method of champhering the upper edges of clog blocks
and thereby producing a new article of manufacture direct from the machine.
Heretofore in the manufacture of clog blocks it has been the practice to champher
the upper edge of the sole by hand by means of a pivotted lever knife, or other
similar hand tool. This system requires skilled labour, inasmuch as it is absolutely
necessary that the champhered edge should be of equal guage all round the sole,
and it is necessary for the operator in champhering to move both the block and the
knife.
Now my Invention consists in making the champher by means of a rotating
cutter, driven by suitable machinery, and provided with a rest and an adjustable
guage which is made of shape to suit the clog block and serve as a guide for the
operator.
In operation, the clog block having been cut to the required shape with sharp
edges, the sole is held with its upper edge against the rotating guaged cutter,
which cuts a uniform champher round the edge of the clog block, thus producing
direct from the machine a new article of manufacture ready for hand, or machine
grooving, or finishing.
By use of the rotating cutter the operator is enabled to champher the clog block
without splitting or tearing the wood.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Robert John Jones in the Great Seal Patent Office on the 9th January
1877.
ROBERT JOHN JONES, of Liverpool, in the County of Lancaster. " IMPROVE-
MENTS IN AND APPLICABLE TO CLOG BLOCKS, AND IN APPARATUS FOR EFFECTING
THE SAME."
"
My Invention relates to a method of champhering the upper edges of clog blocks
and thereby producing a new article of manufacture direct from the machine.
Heretofore in the manufacture of clog blocks it has been the practice to champher
the upper edge of the sole by hand by means of a pivoted lever knife, or other
similar hand tool. This system requires skilled labour, inasmuch as it is absolutely
necessary that the champhered edge should be of equal guage all round the sole,
and it is necessary for the operator in champhering to move both the block and
the knife.
Now my Invention consists in making this champher by means of a rotating
cutter driven by suitable machinery, and provided with a rest and an adjustable
guage, which is made of shape to suit the clog block and serve as a guide for the
operator.
In the accompanying Sheet of Drawings Figure 1 is a side elevation of a clog
block with sharp edges.
Figure 2 is a side elevation of a clog block with champhered edges. Figure 3
is a section through A, B, Figure 1. Figure 4 is a section through C, D, Figure 2.
Figure 5 is a cross section of a clog block showing the grooving which is cut in
the champhered edge.
Figure 6 is a side elevation illustrating a rotating cutter guide and adjustable
guage, such as may be used to carry out my Invention. Figure 7 is a front view
of Figure 6.
Upon reference to the Drawings it will be seen that my Invention consists in
treating the edge of a clog block as shown at Figure 1, and producing thereon a
champher, such as a, Figure 2, by means of a rotating cutter b, such as shown at
Figures 6 and 7, such cutter being arranged with a rest, such as c, and an adjustable
guage, such as d, made of shape to suit the clog block and serve as a guide for the
operator. After champhering the clog block is ready for grooving in manner such
as shown at Figure 5.
In operation, the clog block having been cut to the required shape with sharp
edges the sole is held with its upper edge against the rotating guaged cutter, which
cuts a uniform champher round the edge of the clog block, thus producing direct
from the machine a new article of manufacture ready for hand or machine grooving,
or finishing.
In cases where requisite the champher may be varied in depth or size by having
a moveable guage or guages, such guages being suitably arranged for having any
motion required imparted to them.
By the use of the rotating cutter the operator is enabled to champher the clog
block without splitting or tearing the wood.
Having thus described and ascertained the nature of my said Invention, and the
manner in which the same is to be performed, I would have it understood that I
am aware that clog blocks have been champhered by hand skilled labour, and I do
not therefore claim the champhering the edges of clog blocks, but what I claim as
my Invention is-
Firstly. The method of champhering the edges of clog blocks by the use of
rotating cutters, in manner such as set forth in the before going Specification and
Drawings.
Secondly. The production of a new article of manufacture, being a machine
champhered clog block ready for grooving and finishing, as set forth, and to which

page_text: D
for the purpose of clearly distinguishing it from any other like article of manufacture
I give the distinctive namo of an edged in block or edged in clog block.
In witness whereof, I, the said Robert John Jones, have hereunto set my
hand and seal, this Fifth day of January, in the year of our Lord One
thousand eight hundred and seventy-seven.
ROBERT JOHN (L.s.) JONES.