Process Of Manufacturing Gums For Varnishes, & c.

              UNITED STATES PATE~rr OFFICEG
EDWARD MARTIN DECK, OF AKRON, OHIO.
PROCESS OF MANUFACTURING GUMS FOR VARNISHES, &0.
SPECIFICATION forming part of Letters Patent No. 627,452, dated June 20, 1899.
Application filed July 19, 1897. RenewedNovember 19, i898. Serial No. 696,864. (Nospecimens.)
To [bll Wh0711 it may concern: grown principally in China and the adjacent
De it known that I, EDWARD MARTIN BECK, islands.: This oil is preferably used in the
a citizen of the United States, residing at raw state and the addition thereof reduces 55
Akron, in the county of Summit and State of the temperature of the combined ingredients
5 Ohio, have invented certain new and useful in the receptacle to about 4250 Fahrenheit" at
Improvements in Processes of Manufacturing which time about eight pounds additional of
Gums for Varnishes, &c.; and I do hereby de- air-slaked lime or other suitable ingredient
clare the following to be a full; clear, and ex- or ingredients, which will promote the har- 60
act description of the invention, such as will deningand drying qualities and prevent gran-
[0 enable others skilled in the art to which it ap- ulatiou, may be added to the mixture and
pertains to make and use the same. the whole mass kept ata temperature of about
This invention relates to the process of 4250 Fahrenheit for about one and one-half
manufacturing- the artificial varnish - gum hours longer. The stirring is continued all 65
such as is disclosed in my copending applica- the time or at very frequent intervals until
[5 tion, Serial No. 645,142, filed July 19, 1897. the process is completed, when the kettle or
The primary object of the invention is to other receptacle is removed or the heat shut
provide a simple and efficient process of man- off, so as to permit the mass to cool and har­ufacturing
an artificial varnish-gum from den, and the gum may then be removed in 70
rosin and wood-oil, either with or without an- any suitable manner for use or for other pur-
20 other ingredient or ingredients, which will poses. The gum thus produced by mixing
promote hardening and drying qualities and rosin with the oil of Aleuriie« cordata can be
prevent granulation, such gum being adapt- sold for considerably less than the average
ed to be employed as a substitute for the more natural varnish-gums heretofore used, and 75
expensive natural varnish- gums heretofore may be employed as a substitute for the natu-
25 used in the manufacture of varnishes and for ral gums in the manufacture of varnish and
other purposes, whereby the artificialgnm other purposes in the arts with greater econ­may
be readily and economically made in 01'- amy and less expense and at the same time
del' to reduce the cost of manufacture of var- the beneficial qualities and ad vantages of the 80
nishes, natural gums are realized.
30 The invention will be hereinafter mdre par- I thus provide a simple and efficient proe-ticularly
described and then pointed out in ess whereby a gum or compound may be read­the
claims at the end of the description. ily and cheaply made, which is adapted to be
In carrying out my process I place in a kot- sold as an article of manufacture and to be 85
tle or other receptacle, heated by any suitable employed as a substitute for natural gums in
35 means, about five hundred pounds of rosin the manufacture of varnishes or for other
and heat the same to a temperature of about purposes.
4000 Fahrenheit. I then add to the melted The use of a suitable ingredient or ingredi-rosin
about thirty-seven pounds of air-slaked ents to promote the hardening and drying 90
lime, suitably stirring the mass to thoroughly qualities of the compound, as hereinbefore
40 incorporate the ingredients, after which the I stated, is preferable, and such ingredients are
temperature may be raised to about 5250 Fah- usually employed, because of the more bene­renheit,
at which temperature the mixture fieial results obtained ; but they maybe omit­'
may be maintained for about three hours, the ted without departing from the spirit of my 95
stirring being continued. About teu pounds invention, which iu its broader aspects com-
45 of a suitable drier, as sugar of lead, may now prises, essentially,a process of manufacturing
be added to the mixture, which while being a compound for varnishes, &c., from rosin
stirred is boiled at the last-mentioned tem- and wood-oil treated in the mannerhereinbe­perature
for about one-half hour longer, after fore described, either with or without such 100
which may be added about one hundred and ingredients.
50 eighty-eight pounds of wood-ail-i. e., oil ob- In this application I do not claim the gum
tained from the nuts or seeds of the tree known or product which may be made by the herein­botanically
as Aleuriles cordata, which is described process, as such forms the subject-