IMPROVEMENTS IN THE CONSTRUCTION OF SELF
Year: 1863

page_text: LETTERS PATENT to Henry Wren and John Hopkinson, of London Road
Iron Works, in the City of Manchester, Lancaster, Mechanical Engi-
neers, for the Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF SELF-
Sealed the 18th November 1868, and dated the 20th May 1863.
PROVISIONAL SPECIFICATION left by the said Henry Wren and John
Hopkinson at the Office of the Commissioners of Patents, with their
Petition, on the 20th May 1863.
We, HENRY WREN and JOHN HOPKINSON, of London Road Iron Works,
in the City of Manchester, Lancaster, Mechanical Engineers, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN THE COX-
STRUCTION OF SELF-LUBRICATING BEARINGS FOR SHAFTS AND AXLES," to be as
follows:-
These improvements relate to the kind of lubricator for which Letters
Patent were granted unto Adolphe Mohler, 2nd February 1854, No. 261, and
consist in a mode of insuring a more copious and regular distribution of oil
or lubricating material over the upper surface of the shaft or axle. For this
purposo we employ a plate or projection supported by the upper part of the

page_text: plummer block or bearing, which projection arrests the course of the oil
brought from the reservoir by the collar, and causes it to flow upon the working
surface of the neck.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Wren and John Hopkinson in the Great Seal Patent
Office on the 20th November 1863.
.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, HENRY
WREN and JOHN HOPKINSON, of London Road Iron Works, in the City of
Manchester, Lancaster, Mechanical Engineers, send greeting.
WHEREAS IIer most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of May, in the year of our Lord One
thousand eight hundred and sixty-three, in the twenty-sixth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said Henry Wren and John Hopkinson, Her special licence that we,
the said Henry Wren and John Hopkinson, our executors, adminis-
trators, and assigns, or such others as we, the said Henry Wren and
John Hopkinson, our executors, administrators, and assigns, should at any
time agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make, use,
exercise, and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
THE CONSTRUCTION OF SELF-LUBRICATING BEARINGS FOR SHAFTS AND AXLES," upon
the condition (amongst others) that we, the said Henry Wren and John
Hopkinson, our executors or administrators, by an instrument in writing
under our, or their, or one of their hands and seals, should particularly
describe and ascertain the nature of the said Invention, and in what manner
the same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately after the
date of the said Letters Patent.
NOW KNOW YE, that wo, the said Henry Wren and John Hopkinson,
do hereby declare the nature of our said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the Drawings hereunto
annexed, that is to say :-
Theso improvements relate to the kind of lubricator for which Letters

page_text: Patent were granted unto Adolphe Mohler, dated February 2nd, A.D. 1854,
No. 261, and consist in a mode of insuring a more copious and regular dis-
tribution of oil over the upper surface of the shaft or axle. For this purpose
we employ a plate or projection supported by the upper part of the plummer
block or bearing, and the said projection or plate arrests the course of the oil
brought up from the reservoir by the collar, and causes it to flow upon the
working surface of the neck.
In order that our Invention may be fully understood, we will proceed to
describe the Sheet of Drawings hereunto annexed, and forming part of this
Specification.
Fig. 1 represents the sectional elevation of a plummer block or bearing
constructed according to the Specification of Adolphe Mohler, filed in accord-
ance with the grant of the Letters Patent herein-before recited, and having our
Invention applied thereto; Fig. 2 represents a cross section of the same
through the line X, Y, in Fig. 1.
Fig. 3 represents a sectional elevation of another kind of plummer block
constructed according to Mobler's Patent for fan and other rapidly revolving
shafts or axles, and with our Invention applied thereto; Fig. 4 represents a
longitudinal section of the same through the line Y, Z, in Fig. 3.
Figs. 5 and 6 represent front and side elevations of the plate or projection
that we employ to arrest the rotatory course of the oil upon the collar. In
each of the above Figures the same letters of reference indicate like parts.
In Figs. 1 and 2 the plate or projection A, which we will in future term
stop plate, is supported by the upper part of the bearing, and the lower
extremity being forked, as shewn in Fig. 5, it embraces each side of the
collar C when in position. Supposing the shaft to be turning in the direction
indicated by the arrow, the oil taken up by the collar C is arrested by the
stop plate A at H, and thrown backwards upon the upper surface of the shaft
or axle D. The advantage of this stop plate will be readily seen, for sup-
posing it were removed, the oil, instead of being ejected upon the upper
surface of the shaft or axle would bo merely taken round by the collar, and a
very small portion would find its way to the bearing surface of the shaft. By
placing the stop plate A above the centre of the shaft, as shewn, the same
result is obtained whatever direction the shaft revolves.
In the kind of plummer block shewn in Figs. 3 and 4, the shape or con-
figuration of the stop plate, indicated by the letter B, is somewhat different,
but the effect is identical. In the ordinary plummer blocks the collar C is in
the middle, therefore the stop plate is forked, as in Fig. 5, in order to eject

page_text: the oil on each side; but in bearings of this description it is only necessary to
have a stop on one side of the collar C, as shewn in the Drawing.
In witness whereof, we, the said Henry Wren and John Hopkinson,
have hereunto set our hands and seals, this Nineteenth day of
November, in the year of our Lord One thousand eight hundred
and sixty-three.
Witness,
JOSH. WILLCOCK,
Patent Agent, &c.,
of London & Manchester.
(1.8.) HENRY WREN.
(L.B) JOHN HOPKINSON.