Year: 1888

page_text: Date of Application, 22nd June, 1858
Complete Specification Left, 20th Apr., 1889
Complete Specification Accepted, 25th May, 1889
I, THOMAS SCOTT STEEN, of Orchard Street, Londonderry, Ireland, Soap Manu-
facturer, do hereby declare the nature of this invention to be as follows:--
My Invention relates to the manufacture of soap; and consists essentially in the
introduction therein of petroleum or other mineral oil in about the proportion of
from 1% to 20% whereby the detergent qualities of the soap produced are pro-
portionately increased.
In carrying out the invention in practice, the mineral oil is introduced and
saponified with the soap after being drawn off into frames, special precautions being
taken as to the quantity of mineral oil used and the temperature of the soap which
must neither be too high nor too low.
T. S. STEEN.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: COMPLETE SPECIFICATION.
An Improvement in the Manufacture of Soap.
I THOMAS SCOTT STEEN, of Orchard Street, Londonderry, Ireland, Soap Manu-
facturer, 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 :-
My invention relates to the manufacture of soap for household purposes; and it
consists essentially in the introduction into and combination with a soap specially
made-inasmuch as it contains 70% of resin-of pure mineral oil of the kind in
the proportions, and in the manner hereinafter described whereby the detergent
qualities of the soap are so much increased that friction in washing clothes therewith
is rendered unnecessary.
In carrying out my invention the soap is manufactured in the ordinary way except
that the proportion of resin is about twice that ordinarily employed and that after
being "fitted" it must contain or there must be added to it sufficient caustic lye to
saponify the quantity of mineral oil to be added as hereafter described.
Pure mineral oil of a specific gravity of 0.875 or thereabouts is introduced into the
soap after being "fitted" and drawn off into barrows for the purpose of being
framed, the quantity of oil added being from 6% to 10% or thereabout of the weight
of the soap. This addition is made whilst the soap is contained in the barrows and
whilst the soap is at a temperature not under 150° or over 200° F., and on the oil
being so added it must be well crutched into the soap until the oil is thoroughly
saponified by the lye left in or added to the soap. This operation requires about
ten to fifteen minutes at the end of which time the saponified oil will have become
thoroughly incorporated with the soap.
Special precautions must be taken as to the quality and quantity of the oil used and
the temperature of the soap.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is-
The herein described improvement in the manufacture of soap consisting in the
addition to, and saponification in, the mass of soap containing about the proportion of
resin herein specified of pure mineral oil of the quality and in the proportions and in
the manner herein specified.