IMPROVEMENTS IN SHAFTS AND PLUMMER BLOCKS
Year: 1852

page_text: LETTERS PATENT to Richard Wright, of Greenwich, in the County
of Kent, for the Invention of "IMPROVEMENTS IN SHAFTS AND
PLUMMER BLOCKS."
Sealed the 21st January 1853, and dated the 5th November 1852.
PROVISIONAL SPECIFICATION left by the said Richard Wright:
at the Office of the Commissioners of Patents, with his Petition,.
on the 5th November 1852.
I, RICHARD WRIGHT, of Greenwich, in the County of Kent, do.
hereby declare the nature of the said Invention for "IMPROVEMENTS
IN SHAFTS AND PLUMMER BLOCKS" to be as follows:-
This Invention consists of employing rollers for the shafts to come in
contact with such rollers revolving in cisterns or vessels containing
lubricating materials. The shafts may be improved by enlarging them
at the points of bearing, and they revolve between such rollers or
against surfaces which only touch at intervals.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Richard Wright in the Great Seal Patent
Office on the 5th May 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
RICHARD WRIGHT, of Greenwich, send greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of November, in the
year of our Lord One thousand eight hundred and fifty-two, in the
sixteenth year of Her reign, did, for Herself, Her heirs and succes-
sors, give and grant unto me, the said Richard Wright, Her special
licence that I, the said Richard Wright, my executors, administrators,
and assigns, or such others as I, the said Richard Wright, my execu-
tors, 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 SHAFTS AND PLUMMER BLOCKS," upon the condition (amongst others)
that I, the said Richard Wright, by an instrument in writing under
my hand and seal, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be per-
formed, 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 I, the said Richard Wright, do hereby
leclare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement thereof (that is to say):
The Invention consists of employing rollers for the shafts to come in
contact with such rollers revolving in cisterns or vessels containing
lubricating materials. The shafts may be improved by enlarging them
at the points of bearing, and they revolve between such rollers or
against surfaces which only touch at intervals.
I claim the making of the journals, or axles, or bearings, of a greater
liameter than the contiguous part or parts of the shafts, in order that
the periphery shall dip into the lubricating cistern, likewise to retain
the plummer block axle box in its position on the shaft.
I also claim the placing of side plates to the plummer block or axle
box to form cisterns, also to support the larger rollers, and to retain the
small rollers or flat plates in their places.

page_text: I likewise claim the placing of journals on friction rollers in cisterns
to be lubricated, as they turn and lubricate the small rollers or plates
with which they come in contact. The small rollers or plates to be
used optionally for the same purpose.
Line of plan A. No. 1, journal at the end of shaft. No. 2, journal
of the usual construction (consequently not claimed). Nos. 3, and 4,
improved journals.
Line of plan B, a transverse section of the shaft and plummer block.
No. 1, a journal at the end of the shaft with a collar to retain the
plummer block axle box in its place by the side plate, as before stated;
the external side plate (made of one piece) contains the supply cup e, to
the lubricating cistern; the internal side plates are constructed of two
pieces. No. 2, a journal in general use; a, the cistern; b, the roller.
No. 8, an enlarged journal; a, the cistern. No. 4, an enlarged journal
at the end of shaft.
Line of plan C. No. 1, a side view of the plates removed to show_the
section; a, the cistern. No. 2, the journals resting on the rollers b, b,
in the cistern a; c, c, small rollers; e, supply cup; beneath is a trans-
verse section of the roller 6, and its axis a. No. 3, an enlarged journal
in contact with flat plates d, or small rollers; supply cup e.
No. 4,
enlarged journal at the end of shaft; a, cistern; d, flat plates.
Line of plan D, showing the ground plan of plummer block axles,
described above. No. 5, not appearing in the Provisional Specification,
is unclaimed.
In witness whereof, I, the said Richard Wright, have hereunto set
my hand and seal, this Eleventh day of April, in the year of
our Lord One thousand eight hundred and fifty-three.
Witness,
S. CARPMAEL.
RICHARD WRIGHT. (L.B.)