IMPROVEMENTS IN WOOD SAWING MACHINERY
Year: 1884

page_text: We, THOMAS HALL WHARTON of Bradford in the County of York Commission
Wool Comber and RICHARD SMITH of Bradford aforesaid Mechanical Engineer
do hereby declare the nature of our Invention for IMPROVEMENTS IN WOOD
SAWING MACHINERY to be as follows:
This Invention relates to that class of sawing machinery, where the saws have
a reciprocatory motion, either vertical, horizontal or at an angle.
Hitherto such saws have received their to and fro motion by means of a crank
direct from a shaft or by an arm connected to a rotary face plate.
Our improvements consist firstly in imparting reciprocatory motion to such
saws by means of eccentrics, and secondly in the means of lubricating such
eccentrics whereby we are enabled to operate the saws much quicker than can
possibly be done by cranks.
To carry out our Invention we place (by preference) two eccentrics upon a shaft
or stud a flanged driving pulley being placed between such eccentrics for giving
them rotary motion-The rings or straps passing around the eccentrics are connected
to the frame or block carrying the saws, so that when the eccentrics are set in
motion the saws are caused to reciprocate thereby.
As it is necessary for the eccentric rings and straps to be thoroughly, and
continuously lubricated we supply the oil thereto self-actingly by forming an
annular groove in the side of the eccentrics, which by means of a straight hole is
in communication with the periphery of the eccentric, which is lubricated by the
centrifugal motion of the parts.
Another method of lubricating the eccentrics, by centrifugal action consists in
the employment of a hollow stud or shaft supplied with oil by means of a pipe.
The hollow stud is perforated with small holes so that the oil will escape therefrom
to the eccentric and to the eccentric ring, freely supplying oil to the parts
requiring it, consequently friction is brought to a minimum and wear and tear
avoided.

page_text: We, THOMAS HALL WHARTON of Bradford in the County of York, Commission
Wool Comber and RICHARD SMITH of Bradford aforesaid Mechanical Engineer, do
hereby declare the nature of our Invention for "IMPROVEMENTS IN WOOD
SAWING MACHINERY and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
"
This Invention relates to that class of sawing machinery, where the saws have
a reciprocatory motion, either vertical, horizontal, or at an angle.
Hitherto such saws have received their to and fro motion by means of a crank
direct from a shaft, or by an arm connected to a rotary face plate.
Our improvements consist,
Firstly, in imparting reciprocatory motion to such saws by means of eccentrics,
and
Secondly, in the means of lubricating such eccentrics, whereby we are enabled
to operate the saws much quicker than can possibly be done by cranks.
To carry out our Invention, we place (by preference) two eccentrics upon a
shaft or stud, a flanged driving pulley. being placed between such eccentrics for
giving them rotary motion. The rings or straps passing around the eccentrics are
connected to the frame or block carrying the saws, so that when the eccentrics are
set in motion the saws are caused to reciprocate thereby. As it is necessary for
the eccentric rings and straps to be thoroughly and continuously lubricated, we
supply the oil thereto self-actingly by forming an annular groove in the side of
the eccentrics, which by means of a straight hole is in communication with the
periphery of the eccentric which is lubricated by the centrifugal motion of the
parts.
Another method of lubricating the eccentrics by centrifugal action consists in
the employment of a hollow stud or shaft supplied with oil by means of a pipe.
The hollow stud is perforated with small holes so that the oil will escape therefrom
to the eccentric, and to the eccentric ring, freely supplying oil to the parts
requiring it, consequently friction is brought to a minimum and wear and tear
avoided.
In order that this Invention may be better understood, we herein give reference
to the accompanying Sheet of Drawings wherein Fig. 1 is front elevation, and
Fig. 2 section of vertical wood sawing machine showing the application of our
improvements.
A are the ordinary vertical saws connected at top and bottom to the frame or
cross rail B, such rails being connected at each side to plates or blocks C capable
of sliding backward and forward in the dovetailed or grooved slides D. A stud
or stationary shaft E extending across the framework F is employed and upon
this shaft is a flanged driving pulley G receiving rotary motion from a strap from
any convenient source. On each side or face of this pulley is an eccentric H
around which passes eccentric rings or straps I connected by arm J and stud or
pin K to the sliding plates or blocks C.
It will therefore be seen that the rotary motion of the flanged pulley G will
impart a reciprocatory motion to the saws.
In order to convey a continuous supply of oil to the periphery of the eccentrics,
so as to lubricate the rings or straps I, in addition to the stud or axle E (see
Figures 3 and 4) an annular ring or groove a is formed near the hole through
which the shaft passes, and in connection with this annular groove is a straight

page_text: hole b consequently when the groove a is filled with oil, it will be forced up the
hole b by the centrifugal action of the eccentric, thereby lubricating the periphery
of the eccentric and the rings I.
Another method of lubricating the eccentrics, and in this case also the stud or
stationary shaft at that part where the pulley revolves is shown in section Fig. 5
and 6, where the stud E is made hollow and perforated as indicated by black dots,
the said hollow stud being supplied with oil from cup L. A straight hole c is
formed in the eccentric so as to make a free communication between the hole for
the shaft and the periphery of the eccentric whereby oil can easily pass from the
hollow shaft to the eccentric.
It will therefore be seen that so long as there is any oil within the hollow stud
that the pulley and eccentric rings will be well and thoroughly lubricated by the
centrifugal force of the rotary pulley, wear and tear by friction is avoided, and
much quicker movement of the saws can be obtained in consequence.
Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, we declare that what
we claim is,
Firstly The movement of reciprocatory saws by means of eccentries in manner
substantially as herein shown and described.
Secondly. The means or methods substantially as herein shown and described
for lubricating the pulley and eccentrics by the centrifugal action of the driving
pulley.