Glasgow weekly times. (Glasgow, Mo.) 1848-1861, 1857-02-12

TNHE undersigned has purchased the Right o. |
i the State of Missouri, of o. ). Woodcock'
Improved Mode of Hanging Reciprocating Saws,
Patented Sept. IL, 1855, No. 1854.
The nature Of the improvement consists IN at |
taching the lower end Of the saw directly to the
upper end of the pitman-the tug-pin OF the saw
forming joint, and the pitman working on SUIT
able fulcrum below the tug-pin. Arepresents 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 "a
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 cIogged,
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 sirrup coming down on the pitnan and
bolted securely. The lower ends of the stiles are
connected by journal Joint to the upper edge of
the rail Tin any of the usual ways of forming
working ioint.) 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 lower strrup
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.
When the saw is in motion it makes an eplcyclodlal
curve at eve,y revolution 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 Jog before the cut is quite spent, and immedi
= ately recedeS from the cut, leaving ample room
for the saw dust TO escape into the pit In fact
U the motion of the saw pitches every particle oi
the saw dust out Of the cut as soon as the teeth Of
the saw becomes detached from the log, precisely
d as grain leaves the top of an elevator, or, waite
from a chain pump. The log will remain NOR
firm on the carriage, when cutting small logs, ant
It consequently will bear more feed. Every sawye
has experienced the difficulty of holding small log
on the mill, Gas it is termed,) particularly if tn
: log is very long. In Woodcock's. Patent, tina
disagreeable bouncing motion of the log, is amos
" entirely done away with. In large logs it l
" scarcely necessary to dog the logs on the carrag
n at all. 1t is well known fact to sawyers, tha
" in using the reciproeating saw with rake, on tn
l. old plan that there is great difficulty in maxim
! the dogs hold fast, How often have they seen til
" saw lit the end of the log clear off the carriag
l. blocks, and by that mears break valuable saw
= some other part of the machinery? The adval
! tage in cutting with Woodcock's Patent, is thi
I'd il will cut half more in large timber, and oil
fourth more in ANAL timber, or it is as easy to ri
l. through the cetre OF log feet in diameter,
e. log feet, in saws hung the old plan. 1t has al
other advantage, viz: as all the saw dust passes il
to the pit by the cut of the saw, it leaves the flo
re of the mill clean, is also the top of the log Will
saving.
a. 1t works IN Mulley Saw Mill as well as
sash all that is required is to hayea a ifulcrum f
the pitman, equivalent TO the journal joints of t
stiles, or by placing the pitman cross head fe
of inches below the top of the ptman just far enou
- TO make the top of the pitman or bottom Of t
eu saw vibrate about one and half inch. The pro
a er distance for the fulcrum from the top of I
:. pitman will be fouud, by drafting the length
Vt, pitman with the length of crank, or half the
he bration of the lower end of the ptman.
The improvement is durable and economics
~ not liable to get out of order. Any Mulley
an sash saw mill can be changed at the cost of fC
dollars. The extra amount cut In two days. sa'
C. ing will pay all expenses of the change.
IN In Mulley saw mills the saw can be attached
the upper end of the pitman irons, regulated
III set screws, or by usngthe usual clamp orpendal
rv The above improvements are being made at
> the principal machine shops in St. Louis.
n Persons wishing to make the change can ha
>; irons manufactured TO suit the situation of t
. mill in which they are to be used
es %" For County or Individual Rights addre;
;, $50. NJ. ENGLISH,
u Dec. IS, 1856. Glasgow.