Improvements in Band-sawing, Machines.
Year: 1891

page_text: Date of Application, 29th Aug., 1891
Complete Specification Left, 30th May, 1892-Accepted, 27th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Band-sawing, Machines.
I. JOHN WILD of Falcon Iron Works Oldham in the County of Lancaster
Engineer do hereby declare the nature of this invention to be as follows:-
:-
My invention consists of improved saw-guides and mechanism for adjusting them
and has for its object the more rapid adjustment of the saw-guides so as to suit the
various widths of saws and thicknesses of timber and also for guiding the saw so that
it may be held more rigid whilst at work.
To accomplish this I make the brackets which carry the thrust roller with slot
holes so as to allow sufficient movement for the pin on which the thrust roller is
carried so as to permit their being moved backwards or forwards sufficiently as may
be required for the different widths of saws:
For the guides I employ adjustable pieces of hardened steel of a suitable size
and' section with their ends bearing against the saw in such a way as to prevent
the saw from twisting whilst at work.
To obtain the more rapid adjustment of the top saw-guide I fasten a rack to the
alide or bracket to which the saw-guide is secured and into the rack I gear a small
pinion which is actuated by a hand wheel lever or other suitable mechanism for
raising or lowering Bame.
Dated this Twenty-eighth day of August One thonsand. eight hundred and
COMPLETE SPECIFICATION.
Improvements in Band-sawing Machines.
I JOHN WILD of Falcon Iron Works, Oldham in the County of Lancaster
Engineer do hereby declare the nature of this invention and in what manner the
Bame is to be performed, to be particularly described and ascertained in and by
the following statement :-
My invention consists of improved saw guides and adjustments and has for its
object the holding of the saw more rigidly whilst at work and the more rapid
adjustment of the guides to suit the various widths of saws and thicknesses of
timber.
And for
To accomplish this I make the bracket which carries the thrust roller with Blot
holes so as to allow sufficient movement for the pin on which the thrust roller is
carried so as to allow the pin together with the roller being moved backward or
forward sufficiently as may be required by the different widths of saws.
the guides I employ adjustable pieces of hardened steel carried by the same bracket.
that carries the thrust roller and of a suitable, size and section with their ends
bearing against the sides of the saw in such a way as to prevent its twisting whilst
at work. To attain the more rapid adjustment of the saw guides to suit the
different thicknesses of timber which may have to be sawn I fasten a toothed rack.
to the slide or pillar to which the bracket that carries the adjustable steel guides
thrust roller and pin is secured and into the toothed rack I gear a small spur pinion
which is actuated by means of a hand wheel lever or other suitable mechanism for
raising and lowering same.
In the accompanying drawings Fig. 1 is a front elevation, Fig. 2 is a side elevation,
Fig. 3 is a section through the thrust roller and Fig. 4 is a plan of my improved

page_text: guides and adjustments. In each of the 4 views similar letters of reference are used
to denote similar parts.
A is the slide or pillar and is adjustable vertically being carried by casting J
which forms part of the main frame of the machine and is moved by means of the
rack B (which is secured to A) actuated by a pinion C and hand wheel D. The
casting J is shewn split on one side in Fig. 4 with a bolt L passing through the
cars K and K' with a hand wheel I forming, the nut on the end of the bolt L 80
that when the adjustment of the pillar or bracket A has been made the bolt L can
be tightened by means of the hand wheel I so as to make the casting J grip the
pillar or bracket A. E is the thrust roller the pin F on which it is carried being
free to be moved backward or forward in the slot M and secured in the desired.
position by winged nut N. G and G are the adjustable steel guide blocks.
Hand Hare thumb screws for secureing the blocks in position when adjusted.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is-
-
1st. The general arrangement and construction of saw guides and adjustments
for band sawing machines substantially as described aud illustrated by the
accompanying drawings.
2nd. The adjustable thrust roller and pin substantially as described and
illustrated by the accompanying drawings.
3rd. The adjustable hardened steel blocks for guiding the saw substantially as
described and illustrated by the accompanying drawings.
4th. The rack and the pinion for the purpose as described and illustrated by the
accompanying drawings.