Year: 1888

page_text: I GEORG STEPHAN of Bahnhof, Riegel, in the Grand Duchy of Baden in the
German Empire, Timber Merchant, do hereby declare the nature of this invention to
be as follows
My invention has for its object the construction of a moveable machine applicable
more especially for sawing planks and boards out of heavy timbers, that lie fixed,
while the machine travels forward as the saw cuts.
The machine consists of a semi-circular main body, each end of which rests on a carriage,
the wheels of which are intended as a rule to run on rails. Part of the breadth of the
rails as well as part of the breadth of the wheel tyres are toothed so as to make sure
that both carriages move along equally.
A band saw is fastened to the above mentioned semi-circular main body, and is
worked by a small engine or by turning a bandle conveniently fixed and connected
with the band saw.
In working the machine the piece of timber is placed on fixed tressels or other
supports between the two rails. The machine is pushed against the end of the log of
wood or timber to be sawn through, and the band saw is set in motion, which also,
by means of special gearing causes the two carriages to move forward at the same
rate of speed as that with which the. saw cuts the wood. The tressels on which the
log rests are constructed so that the log can be raised or lowered in order that
the saw may cut the wood in the required place and make the one cut parallel with
the other..
C. R. BONNE & Co.,
Applicant's Agents.

page_text: Improvements in Moveable Timber Sawing Machines.
I, GEORG STEPHAN, Bahnhof Riegel, in the Grand Duchy of Baden, in the Empire
of Germany, Timber Merchant, 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 :-
My invention relates to a moveable machine more especially for sawing planks and
boards out of heavy timbers, that lie fixed, while the machine travels forward as, the
saw cuts.
The manner in which I prefer to carry my invention into effect is shewn in the
accompanying drawings, Fig. 1 being an end view, Fig. 2 a side view and Fig. 3 a
ground plan of the same.
The machine consists of a semi-circular main body the buck A, which carries the
two rollers R¹ & R² over which passes an endless band saw, which is steadied by
means of the two guide rollers & r². The said buck A rests on the two carriages M¹
& M² which can be moved forward over the rails D by means of the four wheels l¹,
The said rails as well as the wheels are toothed in half their width so as to ensure
uniform forward movement of the two carriages.
او
The rollers R & R carrying the band saw are actuated from the pulley c³, which
may be driven by hand or by power in which later case a suitable motor is placed on
the carriage M². The transinission of power from the pulley.c³ takes place by a chain
gear S over the pulley c¹ fixed on the same shaft as the roller R¹.
The carriage wheels or rollers 1, etc. are slowly turned by means of the endless
screws won the shafts n' & n' which shafts are turned by means of a chain h which is
laid over the rollers ƒ', ƒ³, ƒ³, ƒª‚ƒ³ & f, the step pulley's P' & P2 serving to regulate
the speed in the usual way.
ر,
The piece of timber F to be sawn rests on the cross pieces H'H' H³ etc., which
can be raised and lowered together and uniformly by means of the male screws ¹³ ³
etc., which are made to act simultaneously by means of a chain wheel being on each
screw such wheels being connected with each other by means of a chain in the usual way
so that when one of them is turned the others are likewise turned, and consequently the
timber may be raised after each cut in such a manner that the various cuts are parallel
with each other.
To prevent the saw blade from becoming jammed underneath the partly sawn
board, and to enable it to move freely I provide a wedge shaped metal band z which
I stretch between the two lengthened pistons of the rollers f & f6, the position of
which are such that the band z can travel in the cut made by the saw.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I claim is: :-
1. A moveable timber sawing machine consisting essentially of a buck A on
which the sawing gear proper is mounted and which rests on two carriages M & M

page_text: provided with toothed or partly toothed rails substantially in the manner as and for
the purpose described and as shewn in the drawings.
2. The arrangement for moving such machines forward consisting essentially of worm
screws w the spindles n of which are rotated from the main pulley shaft and the
speed of which can be regulated by means of step-pulley transmission, substantially
as described and as shewn in the drawings.