Improvements in Bearings for Vertical Shafts Employed in Moulding, Planing and other Wood Working Machinery.
Year: 1897

page_text: Date of Application, 26th Nov., 1897
Complete Specification Left, 7th May, 1898-Accepted, 11th June, 1898
Improvements in Bearings for Vertical Shafts Employed in Moulding,
Planing and other Wood Working Machinery.
I, THOMAS NIELD ROBINSON, of Thomas Robinson and Son Limited, of Railway
Works. Rochdale, in the County of Lancaster, Machine Makers, do hereby declare
the nature of this invention to be as follows:-
My invention relates to improvements in bearings for vertical shafts employed
in wood working machinery such as moulding, planing and other similar machines
and the object of my improvements is to lubricate the shaft and cause the oil or
other lubricant to circulate freely from a reservoir at the foot of the bearing up
to a chamber at the top of the hearing and back again by a separate passage or
passages to the bottom oil reservoir.
In constructing my improved bearing for a vertical shaft I form in the foot-
step a reservoir for oil surrounding the lower portion of the shaft which portion
has a screw thread cut upon it and from this thread a rifled groove (or grooves)
is cut along the shaft the full length of the bolster bearing terminating above the
bearing in a chamber covered by a cap to keep out dirt and from this chamber a
side passage (or passages) communicates with the oil reservoir.
When sufficient oil is placed in the upper reservoir it flows down the side
passages and fills the lower reservoir so that when the shaft is set in motion the
oil is caused by the screw thread on the shaft to flow upwards into the rifled groove
along which it travels to the top of the bearing and effectually lubricates it the
oil raised from the reservoir into the upper chamber flowing back through the side
passages to the reservoir in the footstep.
Dated this 25th day of November 1897.
H. B. BARLOW & GILLETT,
Agents for Applicant.
Improvements in Bearings for Vertical Shafts Employed in Moulding,
Planing and other Wood Working Machinery.
I, THOMAS NIELD ROBINSON, of Thomas Robinson and Son Limited, of Railway
Works, Rochdale, in the County of Lancaster, Machine Makers, 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 improvements in bearings for vertical shafts employed
in wood working machinery such as moulding, planing and other similar machines

page_text: and the object of my improvements is to lubricate the shaft and cause the oil or
other lubricant to circulate freely from a reservoir at the foot of the bearing up
to a chamber at the top of the bearing and back again by a separate passage or
passages to the hotton oil reservoir.
In constructing my improved hearing for a vertical shaft I form in the foot-
step a reservoir for oil surrounding the lower portion of the shaft which portion
has a screw thread cut upon it and from this thread a rifled groove (or grooves)
is cut along the shaft the full length of the bolster bearing terminating above the
bearing in a chamber covered by a cap to keep out dirt and from this chamber a
side passage (or passages) communicates with the oil reservoir.
In the accompanying sheet of drawings-
Fig. 1 is a sectional elevation of my improved bearing applied to a vertical
shaft and Fig. 2 is a sectional plan of the same.
In these views,-The numeral 1 denotes the bracket, 2 a sleeve fitted in a hole
in the bracket, 3 a pinching screw which prevents the sleeve 2 from turning, and
4 an adjusting screw which passes through a threaded hole in a bridge piece 5
rivetted to the underside of the bracket 1 and is locked in position by a nut 6..
Inside the sleeve 2 between it and the vertical shaft 7 is fitted a lining bush 8;
the shaft 7 is rifled with a groove 9 (or grooves) extending from the oil reservoir 10
at the bottom of the bearing to the chamber 11 at the top of the bearing. In the
outside of the bush 8 are formed vertical oil passages 12 extending from the
chamber 11 to the reservoir 10 which is provided with a draw off pipe and cock 13.
The chamber 11 is closed by a cap 14 to keep out dirt and dust and to permit oil
to be introduced.
When sufficient oil is placed in the chamber 11 it flows down the passages 12
and fills the reservoir 10 so that when the shaft 7 is set in motion the oil is caused
by the screw thread or rifled groove 9 on the shaft to travel upwards to the top of
the bearing which it effectually lubricates and flows back from the chamber 11
through the side passages 12 to the reservoir 10 in the footstep.
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. In wood working machinery, in combination a vertical rotatory shaft having
a rifled groove, or grooves, to raise the oil from a reservoir in the footstep to an
oil chamber at the top of the hearing and side passages for the downward flow
of the oil from the chamber to the reservoir all substantially as herein set forth.
2. The general combination and arrangement of parts embodying my improve-
ments in bearings for vertical shafts employed in wood working machinery sub-
stantially as herein shown and described.
Dated this 6th day of May 1898.
H. B. BARLOW & GILLETT,
Agents for Applicant, 17, St. Ann's Square, Manchester.