AN IMPROVED SELF- LUBRICATING PISTON
Year: 1885

page_text: I, JOSEPH MAYER of 71 Great Portland Street London W. Surgical Instrument
Maker, do hereby declare the nature of my invention for AN IMPROVED SELF-
LUBRICATING PISTON to be as follows:-
The object of my invention is to produce a piston that does not deteriorate by
laying by, is always in order and ready for use and which is especially applicable to
surgical Syringes Pumps and the like. The piston consists of two phlanges (which
I will for this purpose call, respectively) the top phlange and the bottom phlange,
the top being that nearest the knob or ring of the Syringe and the bottom one being
that nearest the nozzle of the Syringe. Each phlange is so constructed as to hold
firmly the edge of the body of the piston, which body consists of a circular,
seamless band of leather or other convenient material.
The piston rod is made hollow and the top phlange is fixed at the end of the
Baid rod. The knob or ring of the Syringe turns upon a screw, which said screw
passes down the hollow piston rod; through the top phlange and body of the
piston, terminating and being fixed in the bottom phlange.
In the bottom phlange is drilled a hole, fitted with a screw. Through this böle
the body of the piston is charged with vasaline or other lubricating substance:
To lubricate the Syringe it is only necessary to slightly turn the knob or ring of
the Syringe, which action brings the phlanges into closer contact causing the
vasaline or other lubricating substance with which the piston is charged, to press.
through the leather body of the piston, thus lubricating the cylinder of the
Syringe and at the same time regulating the leather body of the piston to the
cylinder.

page_text: I, JOSEPH MAYER of 71 Great Portland Street London, W. Surgical Instrument
Maker, 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 object of my invention is to produce a piston that does not deteriorate by
laying by, is always in order and ready for use, and which is especially applicable
to Surgical Syringes, pumps and the like.
The Piston consists of two phlanges, which I will for this purpose call
respectively, the top phlange and the bottom phlange, the top phlange being that
nearest the knob or ring of the syringe and the bottom phlange being that nearest
the nozzle of the syringe. Each phlange is so constructed as to hold firmly the
edge of the body of piston, which body consists of a circular, seamless band of
leather or other convenient material. The piston rod is made hollow and the top
phlange is fixed at the end of the said rod.
The knob or ring of syringe is fixed at end of a screw rod which said screw rod
passes down the hollow piston rod through the top phlange and body of the
piston, terminating and being held by the bottom phlange.
On the said screw rod and immediately under the knob or ring of syringe is a
a screw nut which said screw nut turns upon the said screw rod, the screw nut
resting upon the shoulder of the hollow piston rod.
In the bottom phlange is drilled a hole, which hole is fitted with a screw plug
throug the hole the body of piston is charged with vasaline or other convenient
lubricating substance. I use vasaline for the reason that it keeps the metal of
syringe from corroding and at the same preserves leather and keeps the body of
piston in working order for any length of time.
To lubricate the syringe it is only necessary to slightly turn the nut on screw
rod, which action raises or draws up the screw rod, bringing the phlanges into
closer contact, causing the vasaline or other lubricating substance, with which the
piston is charged to press through the leather body of piston, thus lubricating the
cylinder of the Syringe and at the same time, regulating the the leather body of
the piston to the cylinder.

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
1. In combination with and fixed at end of a hollow piston rod a phlange as
Bet forth.
2. In combination with a screw rod passing through hollow piston rod, a phlange,
as set forth.
3. A screw nut turning upon screw rod and resting upon shoulder of hollow
piston rod, as set forth.
4. In combination with two phlanges a circular, seamless band of leather forming.
body of piston, as set forth.