Year: 1888

page_text: JAMES MURRAY CROOM c/o Wilson, 7 India Street, Edinburgh, Mechanical
Engineer, do hereby declare the nature of this invention to be as follows
-
Namely the method of automatic lubrication of shafting, and the moving parts of all kinds
of machinery including those of land and marine engines &c, by means of oil cups, sight
feed, and other lubricators, having valves actuated by electro-magnets, the electric
currents being supplied from battries or dynamos as may be most suitable, and the
current alternately made and broken as required by motion derived from some suitable
part of the machine itself or by independent clock work, arranged so as to supply the
fubricant at such intervals of time, and in such quantity as may be required.

page_text: JAMFS MURRAY CROOM 24 Bern ird Street Leith, Consulting Engineer, do hereby
declare the nature of this invention and in what mannei the same
performed, to be particularly described and ascertained in and by the following
statement
18 to be
The method of automatic lubrication of shafting and the moving parts of all kinds
of machinery including those of land and marine engine &c, by means of oil cups or
boxes, sight feed or other lubricators having valves actuated directly or indirectly by
electro-magnets, the electric current being derived from dynamos or battries as may
be most suitable, and the current alternately made and broken as required by motion
taken from some suitable part of the machine itself, or by independent clock-work or
other suitable arrangement so as to supply the lubricant at such intervals of time, and
in such quantity as may be required
Fig 1 shows the method described above adapted to an ordinary oil box, for the
main bearing of an engine, A is the electro-magnet, B is a keeper of soft iron
attached to lever C, which working on the fulcrum K, actuates the valve D as shown,
the wires E are connected as usual by terminals to the coil of the electro-magnet, they
being insulated by a piece of vulcanite at F, on the electric current passing through
the coils of the magnet, the soft iron keeper is pulled down and the valves D raised,
and drop of oil admitted to the bearing from each of the valves The lift of the
valves and consequently the amount of oil passed can be regulated by the screw H, and
in the event of the electric current failing from any cause, the screw I can be screwed
down, and the valves D kept open, and the oil box then acts as an ordinary syphon
lubricator by means of the worsteds at W
Fig 2 shows the same principle applied to a sight feed lubricator M being the
electro-magnet, N the keeper, actuating the valve V, through the lever as shown By
means of the wheel and screw at R the amount of the valve opening and oil passed,
may be regulated, or it may be worked as an ordinary sight feed lubricator, in the
event of the current failing from any cause
Fig 3 shows an arrangement for making and breaking the electric current, and
thereby controlling the supply of the oil, it can be worked by the pulley P, with a
band driven from the crank shatt, or by a connecting rod off any reciprocating part
of the machine Acting through the screw and pinion at K, the portion of the drum
marked A, makes one revolution to 14 of the engine, and acting through the 2 sets of
pinions and wheels C, and D, the portion of the drum marked B, makes one revolution
to 224 of the engine
By means of the knobs as shown at E, E, as they revolve depressing the levers S, S,
the heads of the terminals R, R, are brought in contact with the brass plate Q, which
being connected with the dynamo or battery through the terminal T, the circuit is
completed and the electro magnets, act on their respective valves, and admit oil to the
bearings The numbers opposite W, above the drum give the number of knobs on each

page_text: part of the circumference, and the numbers above them opposite X, are the number of
revolutions of engine per contact, or per drop of oil, giving a range from 1 drop of oil
at each revolution of engine, to 1 drop in 224 revolutions
The terminals R, R, are insulated by the piece of vulcanite V, and the brass plate Q
18 insulated by being mounted on the vulcanite lever L
There are only 2 levers S S shown but 3 and 4 may be fitted according to the
number of independent connections required
Fig 4 is a diagram showing the connections to the above machine, D is the
dynamo or battery, F the sight feed lubricator, and M, M, M, the main bearing oil
boxes, as here shown the main bearings are getting 1 drop of oil to 2 revols-of the
engine, and the sight feed lubricator I drop in every 112 revols of the engine
In the above method of lubrication any of the existing forms of electro-magnets
may be used besides the horse shoe form here shown, and they may as claimed be made
to act direct, instead of through levers Also the machine for making and breaking
contact may be modified to any extent this being only one of many ways of attaining
the end
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1st The application of electro-magnets actuating valves to the various oil boxes of
all kinds of machinery and
2nd The controlling of the action of the electro-magnets on the valves by alternately
making and breaking the electric current, by means of motion derived from some
suitable part of the machine itself, or by clock work or any other suitable device
Dated this 10th day of Jonnery 1889