Ribs or other Forms of Wood Mouldings.
Year: 1887

page_text: Date of Application, 25th Feb., 1887
Complete Left, 24th Nov., 1887
Complete Accepted, 27th Jan., 1888
Ribs or other Forms of Wood Mouldings.
1, JOHN KERSHAW of Brow Mills Clayton, near Bradford in the West Riding of
the County of York, Reed and Heald Manufacturer do hereby declare the nature of
this invention to be as follows :-
I employ a special arrangement of revolving cutter or cutters of such form as is
suitable for the work or form of Moulding they are intended to cut, and so con-
structed that the sharpening, or whetting does not alter the form of the cutting edge,
and consequently will always cut the Moulding of the exact size and form intended
I also introduce a series of circular saws so arranged that any number of Mouldings
may be cut at the same time and all surplus wood cut away. I also employ an
automatic feed and delivery motion which consists of an arrangement of Rollers and
Levers, so constructed that a large number of pieces of wood which are intended to
be cut into Mouldings can be placed in a trough, or on a feed board, and will be
carried into the Machine, cut into the desired form and delivered from the Machine
by purely mechanical means.
In the feed motion I arrange that a short interval shall occur between the passing
of one piece of wood, and the next immediately following into the Machine, and
I utilise this interval for the purpose of cooling the revolving cutters hereinbefore
mentioned.
By these means I claim that I obtain great economy of labour, and increased
production.

page_text: improvешение
Ribs or other Forms of Wood Mouldings.
I JOHN KERSHAW of Brow Mills, Clayton, near Bradford in the West Riding of
the County of York, Reed and Heald Manufacturer, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
I employ a special arrangement of revolving cutter or cutters of such form as is
suitable for the work or form of Moulding they are intended to cut, and so con-
structed that the sharpening or whetting does not alter the form of the cutting edge
and consequently will always cut the Moulding of the exact size and form intended.
I also introduce a series of circular saws so arranged that any number of Mouldings
may be cut at the same time and all surplus wood cut away. I also employ an
automatic feed and delivery motion which consists of an arrangement of rollers and
levers so constructed that a large number of pieces of wood which are intended to be
cut into Mouldings can be placed in a trough, or on a feed board or rest, and will be
carried into the Machine, cut into the desired form and delivered from the Machine
by purely mechanical means. In the feed motion I arrange that a short interval
shall occur between the passing of one piece of wood and the next immediately
following into the Machine. I utilize this interval for the purpose of cooling the
revolving cutters hereinbefore mentioned.
And in order that my invention may be better understood I proceed to describe the
accompanying diagrams of my Machine as follows:
-
Fig. 1 (Sheet 1) is an elevation, Fig. 2 (Sheet 2) is a plan of my said Machino
Fig. 3. (Sheet 3) is an elevation and Fig. 4 (Sheet 3) is a plan of the feed motion as
in operation when the Moulding is being actually cut. Fig. 5 (Sheet 3) is an
elevation and Fig. 6 (Sheet 3) is a plan of the feed motion showing how the timber is
taken into the Machine and passed forward to the cutters. Fig. 7 (Sheet 4) is an
elevation Fig. 8 (Sheet 4) a plan and Fig. 9 (Sheet 4) a section of the Moulding
cutter, and the lettering upon each drawing corresponds to that upon the others.
A. A. are two upright supports and a. a. are two rollers attached to or placed
between them. The laths or boards to be Moulded or cut are placed one upon
another, to any number the space will allow, between the upright supports A. A. and
resting upon the rollers a. a. B. B' are rollers for automatically seizing the lowest
lath or board in the series placed on the feed rest, and passing it forward to the feed
rollers E. E. E. E. In placing the laths or boards in the feed rests their ends must
project over the rollers B. B¹. These rollers are driven at a rate of speed in con-
formity with the speed of the feed rollers E. E. E. E. by means of spur, or toothed-
wheel, gearing The roller B. and its toothed wheel are placed upon a fixed spindle,
and B is attached to one end of a lever C. At the other end of which is a roller D.
The laths or boards being placed on the feed rest the lowermost of the series is
allowed to drop between the rollers B. B₁ which carry it forward to the feed
rollers E. E E. E. The moment the board has passed between the first pair of these
feed-rollers it comes in contact with the roller D and presses it back as shown in
Fig. 3, thus relieving the pressure of B' upon the board, and leaving a space
between B. and B' to allow the next board to fall between them.
The lever connecting the rollers B and D may be of the form shown here, or any
other suitable form. The lath or board is thus carried forward to the cutters to be

page_text: Moulded, and having passed the roller D, B' is brought back to its original position
as shown in Fig. 4. (Sheet 3) and B. B' seize the next board bringing it forward in the
same manner as before. This operation is repeated continuously as long as any
boards or laths remain upon the feed rest. Passing through the feed roller the board
or lath is first brought in contact with the circular saws F. which reduce it to a
proper width, or cut it into a series of strips, as may be required, ready for the
Moulding cutters. It is then carried forward to the Moulding cutters G. where it is
reduced to the required form, and taken up by the delivery rollers I. I. and passed
away from the Machine.
H. is a table or plate for holding the work firmly in position for the cutters, and is
adjustable to suit the thickness of the lath or board being cut. This table or rest may
be placed above or below, or two sets may be used, according to the character of the
work to be done. I may also employ a series of cutters of the same or different sizes
and shape, either side by side or consecutively according to the character of the
Moulding required. I also employ levers and springs placed in suitable positions for
keeping the work firmly in position against the fable H and which may also be varied
to meet the requirements.
Power is communicated to the several parts of the Machine as follows:-The
shaft K. is the driving shaft for the feed motion and communicates motion to the
rollers E. E. E. E. by means of the bevelled wheels L. L'. These in turn com-
municating with the rollers B. B¹ by means of the intermediate wheels L L².
Motion is given to the delivery .rollers I. by means of the shaft N and bevelled
wheels O. O and P. P. The rate of speed of the feed and delivery rollers being
identical. The saws or cutters F are driven by means of the shaft and pulley M. and
the Moulding cutters G by the shaft and pulley R. Each by belts or cords from the
or different, shafts and at such rates of speed as the character of the
some common,
work requires.
I employ a special form of cutter as shown on Sheet 4. Fig. 7 is an elevation,
Fig. 8a plan and Fig. 9 a section of a cutter for a simple Moulding, but they will be
formed to suit the character of Moulding required. The peculiarity of this cutter is
that instead of being ground on the side which comes next in contact with the wood
it is ground on the opposite side, thus always presenting the sharp cutting edge to the
work, and by this means the wood is cut in a cleaner manner than by the ordinary
method, and the cutting tool being made to the required shape no amount of grinding
will alter it.
After the wood has left the rollers B. B a short interval occurs between its passing
the roller D and the strip being brought forward by B. B' and therefore a corre-
sponding interval occurs between one piece passing the cutters and the next coming
up to them. This interval employ for cooling the cutters by allowing them to
revolve in cool air or other medium which will reduce their temperature.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1st. The arrangement of the feed-motion as herein described.
2nd. The arrangement of the cutters and the particular mode of forming them so as
to preserve their form and present the best cutting edge to the work and
3rd. The general arrangement of the Machine as herein described, and by these
means I obtain greater economy in working, rapidity of production and the cutters
will keep sharp longer, and 1 obtain cleaner and better work than heretofore.
Dated this 23rd day of November 1887.