US939733A - Method of bleaching rosin. - Google Patents

Method of bleaching rosin. Download PDF

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Publication number
US939733A
US939733A US49553709A US1909495537A US939733A US 939733 A US939733 A US 939733A US 49553709 A US49553709 A US 49553709A US 1909495537 A US1909495537 A US 1909495537A US 939733 A US939733 A US 939733A
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rosin
bleaching
vessel
rays
action
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US49553709A
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Lawrence C Minor
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S204/00—Chemistry: electrical and wave energy
    • Y10S204/901—Effecting a color change by wave energy

Definitions

  • the drawing is a vertical section through an apparatus in which my process may be employed.
  • FIG. A represents a vessel adapted to contain the melted rosin, a suitable gas oven B being provided for heating the vessel A to keep the rosin therein in a melted condition, suitable inlet C and outlet C are provided for admitting and drawing off the rosin, and a suitable hinged cover D is provided for vessel A.
  • the interior of vessel A is preferably lined with a white or reflecting surface a adapted to reflect and disseminate light through the interior of the vessel.
  • openings a are provided in the walls of vessel A and the bulbs or bulls eyes 6 of the lamps E are inserted therein, the bulbs being tightly fitted in the openings so as to prevent leakage of the melted rosin.
  • the lamps E are of the ordinary mercury vapor or uviol type actuated b an electric current supplied through wires l and so constructed as to emit short ultra-violet light rays as will be readily understood by those skilled in the art.
  • the rosin is first melted and introduced into vessel A,.and there heated to maintain it in melted condition. Then the lamps E are turned on, projecting short ultra-violet rays into vessel A where they are thoroughly disseminated by being reflected from the white interior walls of chamber A. I have discovered that the action of the ultra-violet rays is to bleach or lighten the color of rosin, and that the bleaching eifect may be varied by a longer or shorter exposure to the action of the rays,
  • rosin When the rosin is sufliciently bleached it may be drawn off through outlet faucet C and used in the ordinary manner.

Description

Patented N0v. 9,1909.
L. 0. MINOR. I METHOD OF BLEAGHING ROSIN. APPLICATION FILED MAY 12, 1909.
if? M? a 2 m I M F w E Zawreizae @Wz'rwr m5 2 a I] K h 1% w i i 7 m M133: 1 t
m Q l B B5 UNITED STATES PATENT OFFICE.
LAWRENGE C. IMINOR, OF CINCINNATI, OHIO.
METHOD OF BLEACHING ROSIN.
a simple and economical method of bleaching or making the color of rosin lighter, and my invention consists in the method hereinafter described and claimed.
The drawing is a vertical section through an apparatus in which my process may be employed.
In the drawing A represents a vessel adapted to contain the melted rosin, a suitable gas oven B being provided for heating the vessel A to keep the rosin therein in a melted condition, suitable inlet C and outlet C are provided for admitting and drawing off the rosin, and a suitable hinged cover D is provided for vessel A. The interior of vessel A is preferably lined with a white or reflecting surface a adapted to reflect and disseminate light through the interior of the vessel. At intervals openings a are provided in the walls of vessel A and the bulbs or bulls eyes 6 of the lamps E are inserted therein, the bulbs being tightly fitted in the openings so as to prevent leakage of the melted rosin. The lamps E are of the ordinary mercury vapor or uviol type actuated b an electric current supplied through wires l and so constructed as to emit short ultra-violet light rays as will be readily understood by those skilled in the art.
In operation, the rosin is first melted and introduced into vessel A,.and there heated to maintain it in melted condition. Then the lamps E are turned on, projecting short ultra-violet rays into vessel A where they are thoroughly disseminated by being reflected from the white interior walls of chamber A. I have discovered that the action of the ultra-violet rays is to bleach or lighten the color of rosin, and that the bleaching eifect may be varied by a longer or shorter exposure to the action of the rays,
Specification of Letters Patent.
Patented NOV. 9, 1909.
Application filed May 12, 1909. Serial N... 495,537.
at the will of the operator. When the rosin is sufliciently bleached it may be drawn off through outlet faucet C and used in the ordinary manner.
While I have illustrated and described the preferred apparatus and steps for carrying my invention into effect, these may be varied without departing from the spirit of the invention. I therefore do not wish to be limited to exact apparatus and steps set forth but What I claim as new and desire to secure by Letters Patent is:
'l. The method of bleaching rosin which consists in the artificial production of ultra-' violet light rays and subjecting rosin to the action of said rays, substantially as specified.
2. The method of bleaching rosin which consists in the artificial production of ultraviolet light rays and subjecting melted rosin tothe action of said rays, substantially as specified.
3. The method of bleaching rosin which consists in the artificial production of short ultra-violet light rays and subjecting rosin to the action of said rays, substantially as specified.
4. The method of bleaching rosin which consists in the artificial production of short ultra-violet light rays and subjecting the melted rosin to the action of said rays, substantially as specified.
5. The method of bleaching rosin 'which consists in the projection of artificial ultraviolet light rays into a vessel having light reflecting walls and subjecting rosin to the action of said rays, in said vessel, substantially as specified.
6. The method of bleaching rosin which consists in the projection of artificial ultraviolet light rays into a vessel having light reflecting walls and subjecting melted rosin to the action of said rays in said vessel, substantially as specified.
LAWRENCE C. MINOR.
Witnesses:
LEWIS E. Or'rn, BRAYTON G. RICHARDS.
US49553709A 1909-05-12 1909-05-12 Method of bleaching rosin. Expired - Lifetime US939733A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463569A (en) * 1943-11-17 1949-03-08 Raytheon Mfg Co Apparatus for treating gaseous media
US2647868A (en) * 1949-12-30 1953-08-04 Ici Ltd Color removal from esters
US2785118A (en) * 1954-08-30 1957-03-12 Gen Aniline & Film Corp Decolorizing solutions of polymeric nu-vinyl lactams
US2861952A (en) * 1957-01-25 1958-11-25 Sun Oil Co Decolorization of lubricating oils

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2463569A (en) * 1943-11-17 1949-03-08 Raytheon Mfg Co Apparatus for treating gaseous media
US2647868A (en) * 1949-12-30 1953-08-04 Ici Ltd Color removal from esters
US2785118A (en) * 1954-08-30 1957-03-12 Gen Aniline & Film Corp Decolorizing solutions of polymeric nu-vinyl lactams
US2861952A (en) * 1957-01-25 1958-11-25 Sun Oil Co Decolorization of lubricating oils

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