Improvements in Means for Regulating the Feeding Apparatus of Frame Sawing Machinery.
Year: 1889

page_text: Date of Application, 7th Aug., 1889-Accepted, 14th Sept., 1889
COMPLETE SPECIFICATION.
Improvements in Means for Regulating the Feeding Apparatus of
Frame Sawing Machinery.
1. JULIUS WURSTER, trading as Wurster and Seiler of Derendingen, Tübingen in
the Kingdom of Wurtemburg, Empire of 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 and
accompanying drawings :-
My said Invention relates to means for regulating the feeding apparatus of frame
sawing machinery. In such machinery the feeding rollers which carry the log
forwards are intermittently rotated from a friction or other wheel which is moved at
each upward stroke of the frame and this friction or other wheel is generally moved
from an excentric or crank on the driving shaft. To enable me to give a greater or
less amount of feed to the log or logs arrange means whereby the stroke of the
excentric or crank can be easily altered and if need be while the saws are at work.
The accompanying three sheets of drawings illustrate the improvements. Fig. 1
(sheet 1) is an end view of the chief parts of a frame sawing machine to which my
improvements are applied. Fig. 2 is a side view of the same. Figs. 3 to 15 on
sheets 2 and 3 are enlarged detail views of my improvements and of modifications
thereof.
Referring to the Figs. on sheet 1 U is the driving shaft of the machine and the
excentric marked B is the portion to which my improvements are particularly applied.
Figs. 3. 4. 5 and 6 on sheet 2 show the excentric in detail. Fig. 3 is a section of
Fig. 6 at the line I, I. Fig. 4 is a section of Fig. 3 at the line II, II.
Fig. 5 is
a section of Fig. 4 at the line III. III. Fig. 6 is a section of Fig. 3 at the
line IV. IV. I provide a hoss A which is fixed on the shaft U. On the boss A the
excentric B is carried in slides u, u see Fig. 4. The excentric has teeth which
gear with a toothed sector C which is carried in the boss A the said toothed sector
also gearing with a sliding rack which slides in the boss A and is fixed to a
clutch collar D, the result being that when the clutch 1) is moved say in the direction of
the arrow Fig. 6 the rack z¹ moves the sector and the sector C moves the excentric B
and alters its position relatively to the shaft U in such a manner that the stroke is
increased or diminished at will. Referring now to sheet. 1 of the drawings, it will
be seen that the excentric B is connected by the usual link to a slipper block G
which moves the friction wheel G in the usual manner. Chain pinions r. on the
shaft P drive the wheels R. R and R¹ R¹ by means of the chains k. k and thus
move the feed rollers T. T which are fixed on the same spindles as the wheels R. R.
R¹ R¹. The chain K is kept in gear with the wheels R by means of guide
rollers . . The log which is represented by the lines is thus moved through the
sawing machine. When it is desired to alter the feed, I operate the hand wheel D³
and thus rotate the spindle D the screwed end of which engages with a nut in the
lever D' which thus moves the spindle D and consequently the forked lever D¹
which engages with the clutch D, and so moves the rack so as to alter the throw
of the excentric as already described.
In these
I will now refer to the illustrated modifications of my invention.
Figs. 7 and 8
show the improvements in connection with a crank instead of an excentric.
views the parts are the same as in the foregoing Figs. except that the excentric B
is replaced by a crank E which is carried in slides u. u on the face of the boss A.
By moving the clutch D the rack Z rotates the sector which engages with the
teeth Z on the back of the crank and thus shifts the position of the crank and crank
pin in precisely the same manner as in the case of the excentric. In Fig. 9 [
dispense with the rack and sector and use toggle levers W W which are both

page_text: connected to a link on the clutch D. The lever W is jointed to the sliding
excentric B, and the lever is connected at V to the boss A. On moving the
clutch I the centre at V remains fixed and the lever W acting on the excentric B
alters its position relatively to the shaft U. Figs. 10. 11 and 12 show another
modification in which the movement of the sliding excentric B on the boss A is gained
by means of inclines C. C which are slid on the shaft U by means of the clutch D.
The section at Fig. 11 is taken at the line V Fig. 10 and the section at Fig. 12 is
taken at the line VI Fig. 11. Another modification is shown at Figs. 13. 14 and 15
of the drawings. Fig 18 is a section of Fig. 14 at the line VII and Fig. 14 is a
section of Fig. 13 at the line VIII. In this case a worin S is mounted in the boss A
the said worm S gearing with teeth formed on the back of the excentric B. Beneath
the worm and fast on the same spindle is a toothed pinion R which gears with a sliding
rack carried on the clutch D and capable of being moved thereby to and fro. The
worm S is thus revolved and correspondingly moves the excentric B with the results
already set forth. It will be seen that in all of the modifications the alteration
of the excentric or crank is effected from the movement of the clutch this
movement of the clutch being obtained in the manner set forth with reference to
Figs. 1 and 2.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed declare that what I
claim is :-
(1) The general arrangement and combination of apparatus for regulating the feed
of frame sawing machinery substantially as herein before described and shown.
(2) Regulating the feed of frame sawing machinery by altering the throw of the
excentric or crank from which the feeding motion is effected by the means and
substantially as described and shown.
(3) In apparatus for regulating the feed of frame sawing machinery arranging the
excentric or crank in slides on a boss or carrier on the shaft, and moving the excentric
in the said slides by means of a toothed sector and rack or by toggle lever's or by
inclines or by a worm actuated by a link, rack or other attachment connected to or
projecting from a sliding clutch or collar all substantially as described and
illustrated in the respective Figs. of the annexed sheets of drawings.
Dated this 6th day of August 1889
as
DUTTON & FULTON,
1, St. James Square, Manchester, Agents.