IMPROVEMENTS IN THE CONSTRUCTION OF BEARINGS CARRYING A SPINDLE
Year: 1876

page_text: LETTERS PATENT to Abraham Pengelly, of Queen Ann Battery, Coxside,
Plymouth, in the County of Devon, Ship Architect, for the Invention of
"IMPROVEMENTS IN THE CONSTRUCTION OF BEARINGS CARRYING A SPINDLE."
Sealed the 4th April 1876, and dated the 7th January 1876.
PROVISIONAL SPECIFICATION left by the said Abraham Pengelly at the
Office of the Commissioners of Patents on the 7th January 1876.
ABRAHAM PENGELLY, of Queen Ann Battery, Coxside, Plymouth, in the
County of Devon, Ship Architect. "IMPROVEMENTS IN THE CONSTRUCTION OF
BEARINGS CARRYING A SPINDLE."
My Invention relates to the construction of bearings for spindles, and is par-
ticularly applicable to bearings for a windlass spindle, where the spindle (which
passes through the windlass) works on the bearings, my object being to reduce the
friction.
Instead, as heretofore, of allowing the spindle to work directly on the bearing,
I insert between the bearing and spindle a series of rollers to surround the spindle,
and parallel to it in the centre of these rollers the spindle will revolve, so that when
the spindle is made to revolve its surface will come in direct contact with this
series of rollers, which latter will likewise revolve and reduce the friction consequent
on the motion of the spindle.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Abraham Pengelly in the Great Seal Patent Office on the 27th May
1876.
ABRAHAM PENGELLY, of Queen Ann Battery, Cox Side, Plymouth, Ship
"IMPROVEMENTS IN THE CONSTRUCTION OF BEARINGS CARRYING ▲
Architect.
SPINDLE."
My Invention relates to the construction of bearings for spindles, and is par-
ticularly applicable to bearings for a windlass spindle, when the spindle (which
[Price A1

page_text: passes through the windlass) works on the bearings, my object being to reduce the
friction.
Instead of, as heretofore, of allowing the spindle to work directly on the bearing,
I insert between the bearing and spindle a series of rollers to surround the spindle,
and parallel to it. In the centre of these rollers the spindle will revolve, so that
when the spindle is made to revolve its surface will come in contact with this series
of rollers, which latter will revolve and reduce the friction consequent on the
motion of the spindle.
Figure I. is a plan showing the position of the rollers and spindle when fixed in
the bearings.
Figure II. is a plan showing the position of bearing which is fastened on the
chock, also the position of spindle which revolves on the bearings.
Figure III. is a plan showing the bearings separated, being the representation of
a part of the windlass.
The letters correspond with the same parts in each Figure.
A is the spindle which passes through the windlass; B, the part of the bearings
which is fixed to the windlass bitts; B', the portable part of the bearings to allow
the shipping and unshipping of the windlass; c, are the rollers on which the spindle
travels. I separate the rollers by means of a ring at each end of the rollers, as
shown at D, a portion of each roller passing through the rings, as shown at d,
Figure II.
The bearings are so formed that when in place, as in Figure I., fastened by the
screw bolts E, the rings and rollers will be completely cased in and cannot possibly
get out of place. The rings will pass around the spindles with the rollers.
Having thus described all the various parts of my said. Invention, and the
imanner in which it is to be carried out, what I claim as my Invention is the
arrangement of the spindle and rollers fixed and placed in the bearing, substantially
in the manner and for the purposes herein-before described.
In witness whereof, I, the said Abraham Pengelly, have hereunto set my hand
and seal, this Twenty-fourth day of May, One thousand 'eight hundred and
seventy-six.
++
.
ABRAHAM PENGELLY. (L.S.)