Improvements in the Manufacture of Pump-valves.
Year: 1895

page_text: Date of Application, 20th June, 1895
Complete Specification Left, 27th Sept., 1895-Accepted, 2nd Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Pump-valves.
We, JAMES CLAY MOCKABEE, of Mazatlan, in the State of Sinaloa, Republic
of Mexico, Engineer, and CHARLES WOOLRICH, of Mazatlan aforesaid, Vice-
Consul in Her Britannic Majesty's Service, do hereby declare the nature of this
invention to be as follows:-
Our invention relates to what are called disc valves, such as usually rest on a
perforated seat and are guided by means of a central stem, the same being commonly
employed in water pumps; a number of valves being in some instances arranged to
work in unison to afford the requisite area of inlet and discharge.
The object of our invention is the production of disc valves of wood having all
the required qualifications for use, impervious to liquids, flexible to the degree
required, and possessing greater endurance than valves of the same class made of
vulcanized rubber, or other material, such as hitherto commonly used.
6
In the manufacture of valves of the kind above referred to according to our
improved method, we employ Tecomate wood treated by heat, and permented with
drying oil and plumbago in the manner hereinafter described.
Tecomate wood (Indian name,
"
cuastecomate ; botanical name, " crescentia
alata," of the family "Regononiceas"), whereof our improved valves are composed
is indigenous in Mexico and perhaps in other countries of similar climate. It is a
tough, fibrous, hard wood, capable of enduring heavy pressure parallel to its fibre,
and not liable to split, warp or twist under the effects of heat, or from any other
cause incidental to the use of pump valves. It also resists in a remarkable manner
the effect of blows and concussion delivered end wise of the fibre.
In the preparation of our improved disc valves, we take Tecomate wood that has
been cut for some months, and is partially seasoned. The wood is cut transversely
to the grain into discs or pieces, which are bored and turned to the required
diameter. The discs are then immersed for a period of from thirty to fifty minutes,
according to the size and thickness of the discs, in boiling linseed or other drying
oil mixed with plumbago. They are then removed, and piled or packed in such a
manner as to prevent warping until they become cool and dry, whereupon they are
ready for use; the native sap having been expelled by the heat and the interstices
or pores filled with the drying oil and plumbago.
The functions and operation of our improved valves being the same as those of
the same class made of india-rubber, metal or other material, various means of
mounting the same will be within the knowledge by those familiar with the use
of such articles.

page_text: Improvements in the Manufacture of Pump-valves.
We, JAMES CLAY MOCKABEE, of Mazatlan, in the State of Sinaloa, Republic
of Mexico, Engineer, and CHARLES WOOLRICH, of Mazatlan aforesaid, Vice-
Consul in Her Britannic Majesty's Service, 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 :--
Our invention relates to what are called disc-valves, such as usually rest on a
perforated seat and are guided by means of a central stem, the same being commonly
employed in water pumps; a number of valves being in some instances arranged
to work in unison to control the areas respectively required for inlet and discharge.
The object of our invention is the production of disc-valves of wood having all
the required qualifications for use including imperviousness to liquids and flexibility
to the degree required; the same possessing, moreover, greater endurance than
valves of the same class made of vulcanized rubber or such materials as hitherto
commonly used.
In the manufacture of valves according to our improved method, we employ
Tecomate wood treated by heat, and permeated with drying oil and plumbago in the
inanner hereinafter described.
"
Tecomate wood, (Indian name cuastecomate," botanical name, " crescentia
alata," of the family "Regononiceas,") whereof our improved valves are composed,
is indigenous in Mexico and perhaps in other countries of similar climate. It is a
tough, fibrous, hard wood, capable of enduring heavy pressure in the direction of
its fibre, and not liable to split, warp or twist under the effects of heat, or from any
other cause incidental to the use of pump-valves. It also resists in a remarkable
manner the effect of blows and concussion delivered end wise of the fibre.
In the preparation of our improved disc-valves, we take Tecomate wood that has
been cut for some months and is partially seasoned. The wood is cut transversely
to the grain into discs or pieces, which are bored and turned to the required
diameter. The discs are then immersed for a period of from thirty to fifty
minutes, according to the size and thickness of the discs, in boiling linseed or other
drying oil mixed with plumbago, graphite or the like. On removal from the bath,
they are piled or packed in such a manner as to prevent warping until they become
cool and dry, whereupon they are ready for use. The effect of the heat is to expel
the sap from the interstices or pores which thereupon become occupied by the
drying oil and plumbago.
The functions and operation of our improved valves being the same as those of
the same class made of india-rubber, metal or other material, various means of
mounting the same will be within the knowledge by those familiar with the use
of such articles.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we claim
1. The manufacture of pump-valves from Tecomate wood permeated with linseed
or other suitable oil and plumbago or the like, substantially as herein described.
2. In the manufacture of pump-valves from Tecomate wood, treating the valve-
discs with boiling linseed or other suitable oil mixed with plumbago or the like,
substantially as and for the purposes set forth.
Dated this 26th day of September 1895.