Improvements in Sweep- or Shaping Sawing and Drilling Machines.
Year: 1897

page_text: Date of Application, 17th Feb., 1897-Accepted, 27th Mar.,
1897
COMPLETE SPECIFICATION.
Improvements in Sweep- or Shaping Sawing and Drilling Machines.
I, CHARLES VOLTZ, of Pionirgasse No. 4, Strasbourg, Alsatia, Germany,
Manufacturer, 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 :-
This invention relates to an improved construction of sweep- or shaping-saw
machine with rotatable saw-blade, which I will describe with reference to the
accompanying drawings.
The saw is shewn in general front and side elevation at Figs. 9 and 10,
while Figs. 1 to 8 shew details thereof to an enlarged scale.
To an arc-shaped yoke y Figs. 6, 7 and 9, are attached two spiral springs y¹
tending to draw the saw upwards, the hook-shaped ends of which springs are
connected by links y" to the head s of the spindle j.
The tube r, held in a clamping bearing t, is attached to the yoke y by a
bracket and embraces the spindle j, and can be vertically adjusted in position
to suit the thickness of the wood to be worked, by loosening the wing nuts t¹ of
the clamping bearing t.
The spindle is guided in the tube r at top in the bush and at bottom in the
bearing Fig. 3, and it is connected by a screw-thread and nut n' with a clamp n
for holding the saw blade.
A caoutchouc ring fitted over n¹ serves to lessen the force of any impact of the
lower end of the spindle against the bearing 1.
The key p in the bearing 1 corresponds with a vertical groove in the spindle i.
The bearing has a circular groove o into which take setting screws of on the
tube r.
The spindle consists of two separate parts, that are connected together by
means of a ball and socket joint s.
In consequence of this, the saw blade can be turned in all directions by means of
a socket-like handle m, because the bottom pivot of the lower spindle g to which
the lower end of the saw blade is attached, and which slides in bearings h h' in the
tubular guide i, is also moveable in a universal joint f..
The spindle g is provided with a clamp, like the spindle j, and has a caoutchouc
ring for weakening any impact with the guide.
The universal joint fis attached to the connecting rod e¹ of the crank shaft e
which is driven by a cord pulley.
The drilling device employed in combination with the saw is arranged as
follows.
The clamps and ¹ on the tuber serve to hold a drill rod u with handle u¹ and
pin v secured by a setting screw z, Figs. 6, 7, 8 and 10.
In place of the clamp n the drill head q with nut q' Fig. 5 is screwed on to the
spindle j, and a rotary motion is imparted to the latter by means of a cord leading
from the before mentioned cord pulley round a whirl on the handle m, and the
downward motion of the drill and spindle is controlled by hand pressure upon the
handle u of rod u.
For throwing the drilling device out of gear, the setting screw 2 is loosened,
pin v is drawn out of the hole in spindle ; and is then fixed again by the screw .
The above described machine possesses the essential advantage that long pieces
j