Glasgow weekly times. (Glasgow, Mo.) 1848-1861, 1857-01-22

rINHE undersigned has purchased the Right of
l. the State of Missouri, Of o. S. Woodcock's
Improved Mode of Hanging Reciprocating Saws,
Patented Sept. IL, 1855, No. 1904
The nature of the improvement consists IN at
taching the lower end of the saw directly to the
upper end of the ptman-the tug-pin Of the saw
forming joint, and the pitman working on a suit
able fulcrum below the tug-pln. A represents the
saw sash in about the middle of the downward
motion or cut of the saw. 1t will be perceived the
lower end of the saw is thrown little forward
to the cut Of the log. represents the saw in the
act Of ascending, about the centre Of the upward
stroke. 1t will be seen that the lower end Of the
saw stands slightly back from the cut. BY that
means the saw dust has ample room for escape
during the upward movement of the saw, and the
saw is prevented from being checked or clogged,
and will run lighter, and will bear more feed and
consequently cut more rapidly than saws hung in
| the usual way. The above cuts are traverse
section Of sash mill, giving full view of the pit
man and hiding the lower end of the stiles. The
ptman is fastened permanently to the lower rail
! by the stirrup coming down on the pitman and
bolted securely. The lower ends of the stiles are
connected by a journal Joint to the upper edge of
| the rail Gin any of the usual ways of forming a
working joint.) The tug-pin will be few inch
es above the joints at the stiles. The upper stir
rup will be in the usual form. The low er stirrup
should have set screws to keep the saw in line
! The bottom of the saw should vibrate about one
and half inch so as TO clear the cut without CIV
ing the saw any rake. (The saw being plumb,
when the crank is on the upper or lower centre J
When the saw is in motion il makes an epicycodial
curve at evel yreYolrlton of the crank. Any prac-
teal sawyer will readily see the advantages of it.
1t commences cutting as soon as the crank passes
the upper centre and increases its cut until il
reaches the quarter centre, or half the cut of the
saw, from that point the cut becomes lessened as
the crank approaches the lower centre, and leaves
the log before the cut is quite spent, and immedi-
ately recedes from the cut, leaving ample room
for the saw dust 20 escape into the pit. In fact
the motion of the saw pitches every particle of
the saw dust out OF the cut the teeth of
the saw becomes detached from the log, precisely
as grain leaves the top of an elevator, or, water
from a chain pump The log will remain more
firm on the carriage, when cutting small logs, and
consequently will bear more feed. Every sawyer
has experienced the difficulty Of holding small logs
on the mill, Gas it is termed,) particularlyif the
log is very long. In Woodcock's Patent, that
disagreeable bouncing motion of the log, is almost
entirely done away with. In large logs it Ii
scarcely necessary TO dog the logs on the carriage
at all. 1t is well known fact to sawyers, tha
in using the reciproeating saw with rake, on the
old plan, that there is great difficulty in making
the dogs hold fast, How often have they seen tn,
saw lit the end of the log clear off the carriag,
blocks, aad by that mears break valuable saw o
some other part of the machinery? The advan
tage in cutting with Woodcock's Patent, is this
it will cut one half more in large timber, and on
through the cetre Of a log feet in diameter, as
log , feet, in saws hung the old plan. 1t has an
other advantage, viz: as all the saw dust passesin
TO the pit by the of the saw, it leaves the foo
of the mill clean, as is also the top of the log Wills
saving
1t works IN Mulley Saw Mill as well as
sash; all that is required is TO have fulcrum fo
the pitman, equivalent 10 the journal joints of tn
stiles, or by placing the pitman cross head fe,
inches below the top OF the ptman, just far enoug
TO make the top OF the pitman or bottom Of tn
q. saw yibrate about one and half inch. The prop
er distance for the fulcrum from the top of tn
pitman will be fouud, by drafting the length c
pitman with the length Of crank, or half the vi
! bration of the lower end of the pitman.
The improvement is durable and economical
not liable TO get out Of order. Any Mulley O
9 sash saw mill can be changed al the cost of fey
dollars. The extra amount cut N two days saw
} ing will pay all expenses of the change.
In Muiley saw mills the saw can be attached t
the upper end of the pitman irons, regulated b
: set screws, or by usnghe usual clamp or penddn
The above improvements are being made at a
the principal machine shops in ST. Louis.
Persons wishing 10 make the change can hay
irons manufactured TO suit the situation of Iii
: mill in which they are 10 be used.
G55- For County or Individual Rights address
NJ. ENGLISH,
: Dec. IS, 1886. Glasgow.