Year: 1894

page_text: Date of Application, 4th July, 1894
Complete Specification Left. 4th Apr., 1895-Accepted, 4th May,
1895
woou ганц шабніше.
We THOMAS LEES, RALPH LEES, and WILLIAM LEES Junior, all of Park
Foundry, Hollinwood, near Oldham, in the County of Lancaster, Engineers, do
hereby declare the nature of this invention to be as follows:-
Our said invention relates to improvements in wood planing machines in which
the material to be planed is fed past one or more cutters by means of rotating
feed rolls.
In machines of this type as hitherto constructed' the feed rolls have been driven
by tooth spur gearing. Such a method of driving is however subject to the
disadvantage that the tooth wheels are only perfectly in gear for a single thickness
of timber. Any variation in the thickness causes the centres of the wheels to
vary in their distance apart and in the case of very thick material the teeth some-
times come entirely out of gear and the feed stops. Another disadvantage is that
the teeth are liable to become blocked with dust and shavings.
According to our said invention we fix chain wheels on the ends of the shafts of
the feed rolls and connect and drive the latter by means of a chain operated by
suitable wheels from the main driving shaft and being provided with tension rollers
or other means for taking up the slack of the chain.
In a machine having a rising and falling table with driven feed rolls above and
below the material the bearings of the lower feed rolls are formed or mounted in a
side frame attached to and rising and falling with the table. The shafts of the
upper feed rolls are mounted in a pressure frame provided with springs or weights
for ensuring the necessary downward pressure on the material.
In a machine having a fixed table the lower feed rolls are mounted in fixed
bearings while the upper feed rolls are mounted in a frame attached to and moving
with the pressure frame.
Dated 3rd day of Iul 1901
E. T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agent for the Applicants.
Improvements in Wood Planing Machines..
We THOMAS LEES, RALPH LEES, and WILLIAM LEES Junior, all of Park
Foundry, Hollinwood, near Oldham, in the County of Lancaster, Engineers, do
hereby declare the nature of this invention and in what manner the same is to
be performed to be particularly described and ascertained in and by the following
'statement:-
.
'
Our said invention relates to improvements in wood planing machines in which
the material to be planed is fed past one or more cutters by means of rotating
feed rolls.
In such machines as hitherto constructed the feed rolls have been driven
by tooth spur gearing. Such a method of driving is however subject to the

page_text: disadvantage that the tooth wheels are only perfectly in gear for a single thickness
of timber. Any variation in the thickness causes the centres of the wheels to vary
in their distance apart and in the case of very thick material the teeth sometimes
come entirely out of gear with each other and the feed stops. Another disadvantage
is that the teeth are liable to become blocked with dust and shavings.
The object of our invention is to provide means for so driving the feed rolls as
to obviate the aforesaid disadvantages; this we accomplish by the use of chain
driving instead of tooth gearing wheels as hereinafter described with reference to
the accompanying drawings.
.
In Sheet 1. Fig. I is a side elevation, Fig. 2 is a front elevation and Fig. 3 is
a plan of a machine having a rising and falling table with driven feed rolls above
and below the material.
In Sheet 2. Fig. 34 is a side elevation, Fig. 4 is a partial side elevation and
Fig. 5 is a plan of a machine having driven feed rolls over the material.
According to our invention we fix chain wheels on the ends of the shafts of the
feed rolls and drive the latter by means of a chain operated by suitable wheels
from the main driving shaft using in some cases tension devices for taking up the
slack of the chain.
Referring to Figs. 1, 2. and 3-a a are the upper feed rolls bb are the lower
feed rolls which may be mounted in a side frame c attached to and rising and
falling with the table or they may be mounted in bearings in the table itself. The
shafts of the upper feed rolls a a are mounted in bearings in a pressure frame
provided with springs or weights for ensuring the necessary downward pressure as
is well understood.
A pinion e on the main driving shaft drives the wheel el mounted on the shaft &³.
At one end of the shaft e is a chain wheel a³ which engages with and drives the
chain a which passing over chain wheels on the ends of the upper feed rolls a a
imparts rotary motion thereto. In some cases we use a swinging feed roll & mounted
in brackets di which is also driven by the chain a'.
At the other end of the shaft is a pinion gearing into another pinion e
which drives the chain wheel in the contrary direction to the chain wheel a².
The chain wheel & engages with and drives the chain & passing round the chain
wheels on the ends of the lower feed rolls b b. and imparting rotary motion thereto.
Figs. 3, 4 and 5 show a machine having driven feed rolls g g over the material
only is the chain which is driven by a chain wheel mounted on the shaft g
deriving motion through a gear wheel g' and pinion 9 from the main driving
shaft gas will be well understood from the drawing without further description.
In some cases we use tension or guide rollers controlled by springs or weights
such as a³ ³ (Figs. 1 and 2) or h Figs. 34 and 4 for taking up the slack part of
the chain. In other cases such tension devices may be dispensed with and the
Black part of the chain may be allowed to hang and the pull of the driving chain
wheel be relied upon to maintain the chain taut in the direction of the drive.
The particular arrangement of the chains and chain wheels may be varied to suit
the particular construction of wood planing machine to which they are to be
applied.
☐ Having now particularly described and ascertained the nature of our said inven-
tion and in what mauner the same is to be performed we declare that what we
claim is :-
:―
1. In a wood planing machine the combination with the feed rolls of chain
wheels on the ends thereof a chain connecting them and a driving chain. wheel
engaging with and driving the said chain substantially as set forth.
2. In a wood planing machine having upper and lower driven feed rolls the

page_text: combination of feed rolls chain wheels chains and gearing for driving the said feed
rolls substantially as set forth and shown with reference to Figs. 1, 2 and 3 of the
accompanying drawings.
Dated this 3rd day of April 1895.
E. T. WHITELOW, A.M. Inst. C.E.,
70, Deansgate, Manchester, Agent for the Applicants.