APPLICABLE TO MACHINERY FOR CUTTING THE ENDS OF LAPPING BOARDS' AND OTHER ANALAGOUS PURPOSES, SINGLY OR IN COMBINATION WITH MACHINERY FOR DOWELLING IN THE CONSTRUCTION OF PACKING CASES."
Year: 1877

page_text: PROVISIONAL SPECIFICATION left by James Smith at the Office of the
Commissioners of Patents on the 13th August 1877.
IMPROVEMENTS IN OR
JAMES SMITH, of Sale, in the County of Chester.
APPLICABLE TO MACHINERY FOR CUTTING THE ENDS OF LAPPING BOARDS' AND
OTHER ANALAGOUS PURPOSES, SINGLY OR IN COMBINATION WITH MACHINERY FOR
DOWELLING IN THE CONSTRUCTION OF PACKING CASES."
My improvements relate to the construction of a combined machine for cutting
or bevelling the ends of lapping boards used for the purpose of winding laces,
fringes, wools, and other narrow fabrics, and for dowelling the edges of boards
together in the construction of packing cases, and consist in mounting a pair of
knives with their cutting edges at an angle of about 45° with the direction of
motion, and at the required angle to each other, in a suitable carrier, which is caused
to reciprocate by means of a crank and connecting rod in such a manner that when
the board requiring to be ended or bevelled is placed upon an adjustable bracket
and pushed in contact with the knives, such knives, owing to their cutting edges
being set at or about the angle herein-before indicated, are capable of producing a
more perfect cut, and with a considerably less expense of power thas has hitherto
been practicable. The upper surface of this machine is arranged as a table for
dowelling operation herein-before mentioned, and is provided with a slide or block,
caused to advance and recede by means of an endless screw or other equivalent
mechanism.
The dowelling operation is performed as follows:-I employ a number of planed
iron bars, herein-after called "dowel bars, perforated with a series of holes at the
desired distance apart, and in each of these holes I place a dowel, with one extremity
projecting. One of these dowel bars is then put against the sliding block herein-
before described, the board to be dowelled having previously been placed against a
stationary block upon the same table. The forward movement of the sliding block
will then carry forward the dowel bar and force the dowels into the edge of the
board, and will then retire, leaving the dowels projecting outside the edge of such
board. The return movement of the sliding block will now be ready to force a

page_text: second board, which has been mean while placed upon the table, against the dowelled
edge of the first-mentioned board, when the projecting extremities of the dowels
herein-before mentioned will enter its edge, and thus the two boards become dowelled
together.
If more than two boards are required to be dowelled together it will be readily
understood that both edges of the intermediate boards may be undergoing the
dowelling operation simultaneously.
Although I have only described the application of my improvements to the knives
of lapping board ending machines, and this in combination with the dowelling
apparatus herein-before described, I wish it to be understood that such improve-
ments are applicable to the knives of other wood-cutting machines used for similar
or analogous purposes, and that either part of the apparatus herein-before described
may be constructed and used as a separate machine.
'