IMPROVEMENTS IN SLIDES FOR HORIZONTAL SAW FRAMES
Year: 1884

page_text: TOY DIORAL
DIECIFICATION.
I THOMAS NIELD ROBINSON of the Firm of Thomas Robinson and Son, Limited,
of the Railway Works, Rochdale, in the County of Lancaster Machine Maker do
hereby declare the nature of said Invention for IMPROVEMENTS IN SLIDES FOR
HORIZONTAL SAW FRAMES, to be as follows:-
My invention relates to horizontal frame saws that have slides which swivel to
admit of a rocking motion being imparted to the saws, my object being to so
construct the bearing slide and the butting slide that they may be moved longi-
tudinally without having any rocking or oscillating motion imparted to them.
In performing my invention I form the bearing slide of one piece and I attach to
it the butting slide. I pass the cross rail through circular bearings in the bearing
slide and connect it rigidly to the end of the stretcher bar that passes through the
jaws of the bearing slide: I also pass the cross rail through a circular bearing in
the butting slide. The bearing slide is or may be connected to the crank shaft in
the usual manner.
By this improved method of fitting the cross rail in the bearing slide and
butting slide it is free to turn in the bearings formed in them, no rocking or
oscillating motion is communicated to the slides and I am enabled to form the
bearing slide of one piece and the butting slide with a flat bearing surface instead
of a rounded surface as was heretofore customary I thus obtain efficient and
durable bearings: and I also relieve the pin that connects the bearing slide to the
crank from all irregular strain.

page_text: I THOMAS NIELD ROBINSON, of the firm of Thomas Robinson and Son, Limited,
of the Railway Works, Rochdale, in the County of Lancaster, Machine Maker,
do hereby declare the nature of said Invention for IMPROVEMENTS IN SLIDES FOR
HORIZONTAL SAW FRAMES, 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 horizontal frame saws that have slides which swivel to
admit of a rocking motion being imparted to the saws, my object being to so
construct the bearing slide and the butting slide that they may be moved longi-
tudinally without having any rocking or oscillating motion imparted to them.
'
T
In performing my Invention I form the bearing slide of one piece and I attach
to it the butting slide. I pass the cross rail through circular bearings in the
bearing slide and connect it. rigidly to the end of the stretcher bar that passes
through the jaws of the bearing slide. I also pass the cross rail through a
circular bearing in the butting slide. The bearing slide is or may be connected
to the crank shaft in the usual manner.
f
K
By this improved method of fitting the cross rail in the bearing slide and
butting slide it is free to turn in the bearings formed in them, no rocking or
oscillating motion is communicated to the slides and I am enabled to form the
bearing slide of one piece and the butting slide with a flat bearing surface instead
of a rounded surface as was heretofore customary. I thus obtain efficient and
durable bearings and I also relieve the pin that connects the bearing slide to the
crank from all irregular strain.
And in order that my Invention may be fully understood and readily carried
into effect I will proceed to describe the accompanying Sheet of Drawings,
reference being had to the figures and letters marked thereon.
;
"Figure 1 is a side elevation. Fig 2 a plan and Fig. 3 a section, through the
line A A Fig. 1., of part of a horizontal saw frame to which my improvements are
applied. Fig. 4 is a side view, on an enlarged scale, of the cross rail and its sliding
surfaces, the frame being removed. and Fig. 5 is a transverse section of tlie cross
rail and slides.
J
::
Similar letters refer to similar parts throughout the several views.
a a are the uprights and 6 the main crosshead of the machine and, ca baulk of
timber to be sawn; d is the saw and e a stay the ends of which are connected to
the cross rails ff; the cross rails ff¹ pass through circular bearings formed in the
bearing slides g g¹ respectively; and also through holes formed in the stretcher
bar h one end of which passes through the jaws of each of the bearing slides g
and g the cross rails ff1 are connected to the stretcher bar h by the pins h¹; the
cross rails ff' also pass through circular bearings in the butting slides i i¹ which
are secured to the bearing slides g g' respectively; the bearing slide is connected
by the pin and rod k to the crank shaft in the usual manner; the slides g g¹
and are free to move on and are guided by the stationary slides and m m'
respectively, of which the bearing slide and the butting slide m are formed in
and are parallel to the crosshead b, and the bearing slide and butting slide m¹ are

page_text: in the same horizontal planes as the slides and m respectively but are secured at
a slight angle to the crosshead b, as shown in Fig. 2, and may be adjusted if desired
so as to vary the angle..
When the slides are moved longitudinally by the rod k, the stationary slides ¹
and m¹ being set at an angle to the crosshead b, guide the slides g¹ and ¹ slightly
out of line with the slides g and i and the cross rails ff' being connected rigidly
by the pins h¹ to the ends of the stretcher bar h, are thereby caused to turn in
their circular bearings in the slides without imparting any rocking or vibrating
movement to the slides g g¹ and i i¹ or throwing any extra or irregular strain upon
the pin j.
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. The improved method of fitting the cross rails in the bearing and butting
slides, whereby the cross rails are free to turn in their bearings without imparting
any rocking or vibrating motion to the said slides as they are moved longitudinally,
substantially in the manner and for the purposes herein set forth.
2. The combination with a bearing slide made in one piece of a butting.slide
constructed with a flat bearing surface, substantially as herein shown and described
for the purposes specified.