IMPROVEMENTS IN MACHINERY FOR SAWING WOOD
Year: 1882

page_text: "
LETTERS PATENT to William Robert Lake, of the firm of Haseltine, Lake,
* and Co, Patent Agents, Southampton Buildings, London for an Invention of
IMPROVEMENTS IN MACHINERY FOR SAWING WOOD " A communication to
him from abroad by Ralph Stebbins Greenlee of the United States of
America
PROVISIONAL SPECIFICATION left by the said William Robert Lake at the
Office of the Commissioners of Patents on the 12th December 1882.
WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, and Co., Patent Agents,
Southampton Buildings, London, "IMPROVEMENTS IN MACHINERY FOR SAWING
WOOD [A communication to him from abroad by Ralph Stebbins Greenlee of the
United States of America.]
"
This Invention relates to wood sawing machinery and has for its chief object to
furnish new and improved means for feeding various thicknesses of wood to circular
and other saws. It is designed to provide machinery which will be simple, durable,
and effective in its operation; and comprises the following novel features that is
to say: A toothed feed-wheel which is hung to an adjustable frame so as to
travel on the wood on the line to be followed by the saw, to remove wholly the
indentations made by the wheel, the device being combined and provided with
suitable mechanism for driving the feed wheel and novel devices hereinafter
described for adjusting it both vertically and laterally; also forming the teeth of
the wheel tapering so that their sides will carry the wood forward where the latter
is so narrow that the ends of the teeth have not surface enough to travel on;
also a collar and sleeve placed on the feed-wheel shaft to prevent the wheel from
dropping too low.
In carrying the said Invention into practice I provide a substantial iron frame
which is convenient to support the mechanism. A frame is jointed to a standard
which is bolted fast to the main frame of the machine. This jointed frame supports
boxes in which the feed wheel shaft rotates; and it supports boxes in which
rotates another shaft. The feed wheel is attached to the inner end of its shaft and
near to the other end of this shaft is attached a gear wheel which meshes into
another gear wheel on the other shaft. On a pivot shaft which joints the frame

page_text: to the standard are placed intermediate pulleys and there is a belt which drives the
gearing. One pulley is driven by a belt running over another pulley and the
latter is driven by a belt running from either of three other pulleys on a shaft and
over one of three opposite pulleys. The latter pulleys are fastened to a single
shaft which has bearings in the frame. I provide also the ordinary feed-rollers,
the saw casing, and the usual means for elevating the table and I provide means
for adjusting the guide. A nut and set screw are an attachment to the jointed
frame whereby the said frame is adjusted so as to bring the feed wheel properly to
different thicknesses of wood to be sawn. A slotted standard is attached to the
main frame and it is curved on the segment of a circle of which the axis of the
shaft to which the jointed frame. is attached is the centre; so that a set screw
tapped into this frame and adjustable longitudinally in the slot may be turned so
as to move the free end of the frame far enough to make a nice adjustment of the
feed wheel on the line to be followed by the saw. The feed wheel may rotate in
a plane parallel with the guide, but in practice I prefer to set it on an angle so as
to draw the wood to the guide. This can be done by giving to the feed wheel
shaft a suitable pitch. By means of this construction of feed wheel, and the
method of operating it in front of the saw or saws, whatever marring or roughing
of the surface of the wood be done by the wheel, is cut away by the saw.
This is
a material improvement over feed rollers which cover and mar more surface than
the saw will cut away. With my, feed arrangement the surface of the wood
remains in the same condition as before it was put through' the machine.
To enable wood to be fed by the sides of the teeth they are bevelled on one side
to make them the thinner at the points. A collar and sleeve are placed to rotate
on the feed wheel shaft between the feed wheel and bearing to prevent the feed
wheel from dropping too low in case the wood be too narrow for the feed wheel to
travel on its surface.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Robert Lake in the Great Seal Patent Office on the
9th June 1883.
1
WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, and Co, Patent Agents,
Southampton Buildings, London, "IMPROVEMENTS IN MACHINERY FOR SAWING
WOOD A communication to me from abroad, by Ralph Stebbins Greenlee, of the
United States of America.
"
This invention relates to wood sawing machinery, and has for its object to furnish
improved means for feeding various thicknesses of lumber or timber to circular
and other saws, which means shall be, simple and durable, and effective in
operation.
备
The said invention comprises the following novel features that is to say; a
toothed feed-wheel which is arranged on an adjustable frame so as to travel on the
timber on the line to be followed by the saw in order to remove wholly the
indentations made by the said feed-wheel, the device being combined, and provided
with suitable mechanism for driving the feed wheel; and novel devices hereinafter
described for adjusting it both vertically and laterally; in the formation of the
teeth of the wheel in a tapering manner so that their sides will carry the lumber or
timber forward where the latter is so narrow that the ends of the teeth have not
surface enough to travel on; and a collar and sleeve placed on the feed wheel shaft
to prevent the wheel from dropping too low; all as hereinafter described.
In the accompanying drawings
Figure 1 is a side elevation of a sawing machine constructed according to this
invention.
Figure 2, is a top or plan view thereof
Figure 3. is a front view of the feed wheel and a section on the line n showing
the bevel of the teeth
A indicates a substantial iron frame which is convenient to support the
mechanism shown. A frame V of the form shown, or other desired form, is jointed
to a standard T which is securely bolted to the main frame of the machine. The
frame V supports boxes F, M, in which the feed wheel shaft Z rotates; and
boxes I', L, in which rotates a shaft K. The feed wheel e is attached to the inner
end of the shaft Z, and near to the other end of this shaft is attached a gear
wheel F which engages with a gear wheel G on the shaft K. On the pivot
shaft 4, which joints the frame V to the standard T are placed intermediate
pulleys C and I, and on the pulleys I and J. is placed a belt H which drives the
gearing G F. The pulley C is driven by a belt C running over a pulley 8 and
the latter is driven by a belt running from either of the pulleys Q, R or 7 on the
shaft B over an opposite pulley O, P or 6. The latter pulleys are fastened to a
single shaft 9 which has bearings in the frame A¹.
C. C. indicate the ordinary feed rollers, N the saw guard or cover and D¹, J', the
usual means for elevating the table a. A nut E¹ and set screw W are attached to
the franie V at X whereby the said frame is moved so as to properly adjust the
feed wheel e to the different thicknesses of stuff to be sawn. A curved slotted
standard G¹ is attached to the frame A' the curve of which is the arc of a circle of
which the axis of the shaft 4 is the centre; so that a set screw f tapped into the
frame V and adjustable longitudinally in the slot may be turned so as to move the
free end of the frame V far enough to accurately adjust the free wheel e on the line
to be followed by the saw a'. As shown in the drawings the feed wheel e rotates in
a plane parallel with the guide b, but I prefer to set it at an angle indicated by the
0

page_text: line 10 Figure 2, so as to draw the wood to the guide b. This can be done by
giving to the shaft Z a pitch shown by the line 12. 12. By means of this
construction of feed wheel and the method of operating it in front of the saw or
saws, whatever marring or roughing of the surface of the wood is caused by
the feed wheel, is cut away by the saw. This is a material improvement over
feed rollers which cover and mar more surface than the saw will cut away; with
the improved feed the surface of the wood remains in the same condition as before
it was put through the machine.
"
In Figure 3, one of the teeth of the feed wheel e is shown in section being
bevelled on one side to make them thinner at the points to enable wood to be fed
by the sides of the teeth.
E indicates a collar and sleeve placed to rotate on the shaft Z between the feed-
wheel e and the bearing F, to prevent the said wheel from'dropping too low in case
the wood be too narrow for the feed wheel to travel on its surface.
As the frame V is pivotted to the main frame of the machine it may be thrown
back, so as to be out of the way when not required.
Having thus fully described the said invention as communicated to me by my.
foreign Correspondent, and the manner of performing the same, I wish it
understood that I claim
First. The feed wheel e constructed substantially as specified and carried by an
adjustable frame V in such a manner as to travel upon the wood being sawn
directly in line with the saw, as, and for the purpose, specified.
Second. The combination of the feed wheel e, the frame V, the gear wheels F¹, G,.
and band wheels or pulleys I, C", J, O, Q, 8 and. A, substantially as, and for the
purpose, specified.
Third. The curved slotted standard G₁ and the set-screw for adjusting the feed
wheel e in line with the saw a', substantially as specified.
Fourth. The feed wheel c having its teeth bevelled on one side, as, and for the
purpose, specified.,
i
Fifth. A feed wheel constructed and arranged to operate with a saw in such a
manner that the saw will cut away the indentations or marks made by the said
wheel in feeding the wood to the saw, substantially as specified.
Sixth. The collar and sleeve E, in combination with the shaft Z for preventing
the feed-wheel e from falling too low, as specified.
Seventh. The frame V carrying the mechanism described, and pivotted to the
frame A' so that it can be swung back to the end of the table, substantially as, and
for the purpose, specified.
In witness whereof I the said William. Robert Lake have hereunto set my
hand and seal this Ninth day of June in the year of our Lord One
- thousand eight hundred and eighty three