IMPROVEMENTS IN APPARATUS FOR HOLDING OIL FOR LUBRICATING PURPOSES
Year: 1854

page_text: LETTERS PATENT to John Bonnall, of Spittlegate, Grantham, in the
County of Lincoln, Engineer, for the Invention of "IMPROVEMENTS IN
APPARATUS FOR HOLDING OIL FOR LUBRICATING PURPOSES."
Sealed the 13th April 1855, and dated the 16th October 1854.
PROVISIONAL SPECIFICATION left by the said John Bonnall at the
Office of the Commissioners of Patents, with his Petition, on the
16th October 1854.
I, JOHN BONNALL, of Spittlegate, Grantham, in the County of Lincoln,
Engineer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN APPARATUS FOR HOLDING OIL FOR LUBRICATING PURPOSES" to be as
follows:-
My improvements consist in forming oil vessels for lubricating purposes
wholly or in part of flexible or elastic material, with an elastic tendency to
keep to the form or figure desired, but capable of compression to force the oil
therefrom; and I prefer to form such vessel of vulcanized india-rubber, with
a tendency to keep to the form obtained, which may be spherical or otherwise;
and I apply thereto a suitable spout or nipple, to serve as the inlet and outlet
passage. I also apply a weight at one part of such vessel, especially when of
a spherical form, in order that the spout or nipple may be kept upright, or in
such other position desired. Other flexible material may, however, be employed

page_text: to form the vessel, and the elastic tendency to maintain an extended form may
be obtained by helical or other springs applied to it.
Supply may be obtained through the spout or nipple by collapsing the
vessel, thus forcing out the contained air, when, upon applying the aperture
of the spout or nipple to oil, and allowing the vessel to expand, the oil will
flow therein. In like manner supply from such vessel is obtained by
compressing to the extent desired.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
.
by the said John Bonnall in the Great Seal Patent Office on the
16th April 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BONNALL, of Spittlegate, Grantham, in the County of Lincoln, Engineer, send.
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Sixteenth day of October, in the year of our Lord
One thousand eight hundred and fifty-four, in the eighteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said John Bonnall, Her special licence that I, the said John Bonnáll, my
executors, administrators, and assigns, or such others as I, the said John
Bonnall, my 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 APPA-
RATUS FOR HOLDING OIL FOR LUBRICATING PURPOSES," upon the condition (amongst
others) that I, the said John Bonnall, 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 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 I, the said John Bonnall, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof (that is to say):-
My improvements consist in forming oil vessels for lubricating purposes
wholly or in part of flexible or elastic material, with an elastic tendency to

page_text: keep to the form or figure desired, but capable of compression to force the oil
therefrom; and I prefer to form such vessel of vulcanized india-rubber, with
a tendency to keep to the form obtained, which may be spherical or otherwise;
and I apply thereto a suitable spout or nipple to serve as the inlet and outlet
passage. I also apply a weight at one part of such vessel, especially when of
a spherical form, in order that the spout or nipple may be kept upright, or in
such other position desired.
But that the nature of the said Invention, and the means for carrying the
same into effect, may be fully understood, I will proceed to describe the
Drawing annexed.
DESCRIPTION OF THE DRAWING.
Figure 1-shows-one arrangement of vessel such as I prefer to use. a is the
oil chamber, formed of vulcanized or prepared india-rubber; 6 is the spout,
which is retained to the vessel a by being passed through the plate c and
screwed into the nut d. In putting the parts together, the nut & is first passed
through the hole for the inner end of the nipple, and when the vessel is of
india-rubber, this hole will open sufficiently for that purpose, and then close
again by its elasticity.
Figure 2 shows a slight modification of the above. In this case
there is a portion cut away at e, to admit the lead or other weight f, for
the purpose of keeping the vessel with the spout upright, as shown. This
weight is held in position by the screw g, passed through the plate h and
into the weight f, as shown, by which the parts will be held closely together to
prevent escape of oil.
Figure 3 shows a section of a slight modification of the preceeding, but to
prevent repetition, the parts are marked with similar letters of reference as
those previously employed. i is a foot, to sustain the spout in position, as may
be desired.
In some cases I line the interior of the vessel a with a coating of gutta
percha. Other flexible material than prepared india-rubber may, however, be
employed to form the vessel a, and the elastic tendency to maintain an extended
form may be obtained by helical or other springs applied to it.
Supply may be obtained through the spout or nipple by collapsing the
vessel, thus forcing out the contained air, when, upon applying the aperture
of the spout or nipple to oil, and allowing the vessel to expand, the oil will
flow therein. In like manner supply from such vessel is obtained by
compressing to the extent desired.
Having thus described the nature of my said Invention, I would have it
understood that I do not confine myself to the precise details herein shown and

page_text: described; but what I do claim is, the forming vessels to contain oil for lubri-
cating purposes of flexible or elastic material, capable of compression to force
out the oil contained therein, but with a tendency to expand again when the
pressure is removed, as explained.
In witness whereof, I, the said John Bonnall, have hereunto set my
hand and seal, this Thirteenth day of April, in the year of our Lord
One thousand eight hundred and fifty-five.
Witness,
THEOPHILUS EASTE.
JOHN BONNALL. (L.S.)