Year: 1886

page_text: I JAMES LIONEL GRANDISON of 269 Moss Lane East Manchester in the County
of Lancaster Mechanical Engineer do hereby declare the nature of this invention
to be as follows:-
This Invention relates to "Sight feed" Lubricators and has for its object to
increase the efficiency and durability of such Lubricators.
I cast the Condenser with a comparatively large opening or orifice at one end
so as to permit it to be turned inside as well as outside. By this means I am ables
to produce a Condenser with uniform thin walls, and to insert therein a coil of.
copper tube through which the steam must pass before it can enter the Condenser.
The opening may be protected by a lid or cover which is by preference screwed
into the opening but which may be secured by other suitable means. This arrange-
ment facilitates the condensation of the steam.
Between the lower part of the sight tube and the body of the lubricator I insert
a check or retaining valve having a small axial perforation forming a nozzle through
which the oil passes into the sight tube. This valve prevents any sudden rush of
steam into the sight tube and the consequent sudden heating and fracture of that
tube. The liability of this tube to breakage from the sudden or unequal application
of heat or from the unequal expansion or contraction of the glass and metal
respectively is further obviated by the employment of rings having a special form
instead of the rings ordinarily employed for packing the joints at the ends of the
sight tube. The form of ring which 1 employ for the purposes of this invention
resembles that of those employed in packing hydraulic joints and which are
commonly known as "Cup leathers" or U rings but instead of making them of
leather I construct them of an indiarubber compound well known in the india-
rubber trade which is made especially to resist the action of oils or of the degree
of heat to which they may be subjected. Any other suitable material or compound
may however be used for the rings in place of the indiarubber compound.
The glass tube is held by the pressure of the water exerted upon the inner
surfaces of the rings and the tendency of the glass to expand is resisted therefore
by the fluid pressure only.
The condensed water inlet, the oil outlet, and the air outlet to the Condenser
are governed by a single taper plug cock so arranged and constructed that the steam

page_text: pressure is exerted upon the larger end of the plug thereby obviating the provi-
sion of means for tightening or adjusting the plug. The condensed water is led
from the cock to near the bottom of the lubricator by means of a dip tube the
lower end of which may be protected by a check valve. A run off cock or valve
is inserted near the bottom of the lubricator to enable it to be completely or nearly
emptied.
Dated this 14th day of Ion 1000
Improvements in and relating to Sight Feed Lubricators.
I, JAMES LIONEL GRANDISON of 269 Moss Lane East, Manchester in the County
of Lancaster, Mechanical Engineer, 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 :-
The glass tubes of Sight-feed Lubricators have hitherto been liable to breakage
from the effect of sudden or unequal heating or from the effect of unequal
expansion or contraction of the glass and the contiguous metal respectively.
The object of this Invention is to prevent or diminish the liability to breakage
of the glass tube and to increase the efficiency of the joint between the tube and
its seatings or holders.
These Improvements consist in forming the joints by means of cupped rings or
washers which take the place of the rings or packing ordinarily used.
And in order that this my Invention may be more readily understood and
carried into practical effect I have here unto appended a sheet of Drawings and
will now proceed to describe the same.
The figure represents a vertical section through one end of the glass tube and
the joint at that end. A is the glass tube, B is the cap, C is the nozzle D the box,
and E the cupped ring. These rings are by preference constructed of vulcanized
India Rubber compound but they may be made of leather or any other suitable
material or compound. If the rings are constructed of India Rubber compound
they should be moulded to the required form before vulcanization and such a
mixture should be used as will enable the rings to with stand heat and other
influences to which they may be subjected. When these rings are used the cap B
may be screwed up tight without risk of jamming the glass which is held by
the pressure of the water exerted upon the inner surfaces of the rings and the
tendency of the glass to expand under the action of heat is resisted therefore by
fluid pressure only.

page_text: 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
In a Sight-feed Lubricator, the cupped rings E, substantially as and for the
purpose herein before described and illustrated on the accompanying sheet of
drawings.
WILLIAM E. HEYS,
Agent for the Applicant.