AN IMPROVE MENT CONNECTED WITH SECURING THE SCREW CAPS OF LUBRICATORS
Year: 1884

page_text: I FREDERICK SMITH of 8 George Street, Brick Lane, Bethnal Green, Middlesex,
Engineer, do hereby declare the nature of my said invention for "AN IMPROVE
MENT CONNECTED WITH SECURING THE SCREW CAPS OF LUBRICATORS," to bo as
follows:-
The object of this invention is to arrange an appliance on the screw cap of a
lubricator that the cap can be securely fastened in position at any part of the plug
after adjustment for forcing the grease or other lubricant through the stem of the
plug to the shaft, axle, or other journal that requires lubricating.
Hitherto the screw caps of lubricators have the disadvantage of getting loose
during the running of the bearing or box, or pulley on which they are fitted as to
produce an unpleasant rattling noise and in many instances they have become
completely unscrewed and detached and have under centrifugal action flown clear
away.
Now to obviate these disadvantages I attach a lip piece to the barrel portion of
the cap and fit a set screw in the lip in such a position that its inner end when
screwed home shall bear upon or against ono or other of the sides of the nut
surfaces these forming part of the body of the plug as to hold the cap at the
position to which it has been adjusted.

page_text: I FREDERICK SMITH of 8 George Street, Brick Lane, Bethnal Green, Middlesex,
Engineer, do hereby declare the nature of my said invention for "AN IMPROVE-
MENT CONNECTED WITH SECURING THE SCREW CAPS OF LUBRICATORS," and in
what manner the same is to be performed to bo particularly described and
ascertained in and by the following statement:-
The object of this invention is to arrange an appliance on the screw cap of a
lubricator that the cap can be securely fastened in position at any part of the plug
after adjustment for forcing the grease or other like lubricant through the stem of
the plug to the shaft axle or other journal that requires lubricating.
Hitherto the screw caps of lubricators have the disadvantage of getting loose
during the running of the apparatus such as boxes or pullies on which they are
fitted as to produce an unpleasant rattling noise and in many instances they have
become completely unscrewed and detached and have under centrifugal action
flown clear away.
-
•
Now to obviate these disadvantages I attach as shown in the annexed drawings
Figures 1, 2, 3 and 4 a lip piece A to the barrel portion B of the cap C and fit a
Bet screw D in the lip A in such a position that the inner end E whon screwed
home shall bear upon or against one or other of the sides F of the nut G this
forming part of the body of the plug H as to hold the cap C'at the position 'to
which it has been adjusted.
•
Having now particularly described and ascertained the nature of my said.
invention and in what manner the samo is to be performed I declare that what
I claim is
"
1. The application or employment of a lip A on or from the adjustable cap C
when said cap is used to force grease or like lubricant through the body of the
plug H as and for the purpose described and substantially as shown in the annexed
drawings.
2. The application or employment of a set screw D in and through the lip A to
fix the cap C at any desired part of the stem H of a lubricator in which a solid or
semi-solid lubricant is used as described.

page_text: PROVISIONAL SPECIFICATION.
I FREDERICK SMITH of 8 George Street, Brick Lane, Bothnal Green, Middlesex,
Engineer, do hereby declare the nature of my said invention for "AN IMPROVE.
MENT CONNECTED WITH SECURING THE SCREW CAPS OF LUBRICATORS," to be as
follows:-
The object of this invention is to arrange an appliance on the screw cap of a
lubricator that the cap can be securely fastened in position at any part of the plug
after adjustment for forcing the grease or other lubricant through the stem of the
plug to the shaft, axle, or other journal that requires lubricating.
.
-
Hitherto the screw caps of lubricators have the disadvantage of getting loose
during the running of the bearing or box, or pulley on which they are fitted as to
produce an unpleasant rattling noise and in many instances they have become
completely unscrewed and detached and have under centrifugal action flown clear
away.
Now to obviate these disadvantages I attach a lip piece to the barrel portion of
the cap and fit a set screw in the lip in such a position that its inner end when
screwed home shall bear upon or against one or other of the sides of the nut
surfaces these forming part of the body of the plug as to hold the cap at the
position to which it has been adjusted.

page_text: I FREDERICK SMITH of 8 George Street, Brick Lane, Bethnal Green, Middlesex,
Engineer, do hereby declare the nature of my said invention for "AN IMPROVE-
MENT CONNECTED WITH SECURING THE SCREW CAPS OF LUBRICATORS," and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:-
The object of this invention is to arrange an applianco on the screw cap of a
Lubricator that the cap can be securely fastened in position at any part of the plug
after adjustment for forcing the grease or other like lubricant through the stem of
the plug to the shaft axle or other journal that requires lubricating.
Hitherto the screw caps of lubricators have the disadvantage of getting loose
during the running of the apparatus such as boxes or pullies on which they are
fitted as to produce an unpleasant rattling noise and in many instances they have
become completely unscrewed and detached and have under centrifugal action
flown clear away.
Now to obviate these disadvantages I attach as shown in the annexed drawings
Figures 1, 2, 3 and 4 a lip piece A to the barrel portion B of the cap C and fit a
set screw D in the lip A in such a position that the inner end E when screwed
home shall bear upon or against one or other of the sides F of the nut G this
forming part of the body of the plug H as to hold the cap C at the position to
which it has been adjusted.
I am aware that scrow caps have been applied to detachable lubricator plugs or
stems prior to the date of my application for Letters Patent but the upper part of
the plug or stem has been recessed so that liquid oil could be held therein, the cap
serving then as a cover only to prevent entrance of dirt or dust. The grease or
lubricant used with the appliance shown on the drawings is of a solid or semi-
solid character which requires pressure to force it through the aperture in the plug
to the part to be lubricated. This pressure is only applied at intervals by screwing
the cap down as the grease is used, and to enable this to be effected in a complete
and perfect manner I make the upper part of my plug without a recess or oil cup
but if a recess be formed the whole of the solid lubricant would not be forced
through because the recess would still be charged when the cap is screwed homa
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
1. The application or employment of a lip A on or from the adjustable cap C
when said cap is used to force grease or like lubricant through the body of the

page_text: plug Has and for the purpose described and substantially as shown in the annexed
drawings.
2. The application or employment of a set screw D in and through the lip A to
fix the cap C at any desired part of the stem H of a lubricator in which a solid or
semi-solid lubricant is used as described.