US1301409A - Drier for nitrocellulose. - Google Patents

Drier for nitrocellulose. Download PDF

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Publication number
US1301409A
US1301409A US18122717A US18122717A US1301409A US 1301409 A US1301409 A US 1301409A US 18122717 A US18122717 A US 18122717A US 18122717 A US18122717 A US 18122717A US 1301409 A US1301409 A US 1301409A
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United States
Prior art keywords
cylinder
nitrocellulose
drier
chamber
drying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US18122717A
Inventor
Francis I Du Pont
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Priority to US18122717A priority Critical patent/US1301409A/en
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Publication of US1301409A publication Critical patent/US1301409A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/06—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam for articles of indefinite length
    • B29C35/065—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam for articles of indefinite length in long tubular vessels

Definitions

  • lhe object of my invention is to provide a drier which, although capable of other uses, is adapted more especially to the drying of nitrocellulose, prior to treatment with ether and alcohol, in the manufacture of smokeless powder. .i
  • Fig. 2 is an enlarged cross-section through the drying cylinder and heating chamber.
  • lig. 3 is' a longitudinal section of a portion of the drying cylinder.
  • a rotary power-driven shaft b having spokes c to which is secured a worm or spiral d extending close to the inner wall of the cylinder.
  • the cylinder is supported on a frame-work e, which is shaped to form a chamber f through or into which the cylinder extends.
  • Heating pipes g extend through the chamber.
  • aihopper h having its bottom closed by an endless carrier z', which, with the roller y', transfers the nitrocellulose in a slow, measured and substantiallyl continuous stream fromthe hopper to the cylinder.
  • Ait the discharge end of the cylinder is a pipe le through which' air may be forced with just sufficient pressure to cause it to circulate through the cylinder within the spiral in the direction opposite to that of the travel of the nitrocellulose.
  • the upper part ofthe cylinder is made of juring the other parts of the drier.
  • the discharge end of the cylinder has a discharge chute n provided with rotary feed blades o for delivering the nitrocellulose without permitting escape of the warm air used for drying.
  • the discharge chute leads to the apparatus within which the nitrocellulose undergoes further treatment.
  • l. ln a drier for nitrocellulose, the combination with a heating chamber, of an imperforate cylinder extending within the chamber, the upper part of the cylinder being formed of rigid material and held in rigid and permanent relationship to the.f

Description

F. I. DU PONT.
DRIER FOR NITROCELLULOSE.
APPLICATION FILED JULY I8, I9I7 glmgwg, .m1/med Apr. 22,1919.
2 SHEETS-SHEET 1.
mul" mis.'
F. l. DU PONT.
DRIER FOR NITRUCELLULOSE.
APPLICATION FILED IIILY I5. |917.
L S IL D4Qo Patented Apr. 22, N19.
2 SHEETS-SHEET 2.
- 'SVM WM A unrrnn ernrns rnrnnr ernten.
nieren. ron. nrrnoenrnnneen.
Specification of Letters Patient. Patented Alpi". 22, 'ltllDu Application fled July ld, 191'?. Serial No. imam?.
To all whom t may concern.'
Be it lrnown that li, Francis DU PONT, a citizenef the United States, residing at Wilmington, county 'of New Castle and State of Delaware, have invented a new and useful llniprovement in Driers for Nitrocellulose, of vwhich the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, vwhich form a part of this specification. i
lhe object of my invention is to provide a drier which, although capable of other uses, is adapted more especially to the drying of nitrocellulose, prior to treatment with ether and alcohol, in the manufacture of smokeless powder. .i
A preferred embodiment of the invention is shown'in the accompanying drawings, in which- Figure l is an elevation, partly in section, of an apparatus embodying my invention.
Fig. 2 is an enlarged cross-section through the drying cylinder and heating chamber.
lig. 3 is' a longitudinal section of a portion of the drying cylinder. y
Through a long stationary casing or cylf inder a extends a rotary power-driven shaft b having spokes c to which is secured a worm or spiral d extending close to the inner wall of the cylinder. The cylinder is supported on a frame-work e, which is shaped to form a chamber f through or into which the cylinder extends. Heating pipes g extend through the chamber.
At the admission end of the cylinder is located aihopper h having its bottom closed by an endless carrier z', which, with the roller y', transfers the nitrocellulose in a slow, measured and substantiallyl continuous stream fromthe hopper to the cylinder. 7
Ait the discharge end of the cylinder is a pipe le through which' air may be forced with just sufficient pressure to cause it to circulate through the cylinder within the spiral in the direction opposite to that of the travel of the nitrocellulose.
The upper part ofthe cylinder is made of juring the other parts of the drier. rfhe supports m carried by, or forming part of, the frame-work e, extending over the top of the cylinderare made relatively heavy so that they will remain intact in case the upper part of the cylinder is blown out by the firing of the nitrocellulose as it is passing through the drier. l v
The discharge end of the cylinder has a discharge chute n provided with rotary feed blades o for delivering the nitrocellulose without permitting escape of the warm air used for drying. The discharge chute leads to the apparatus within which the nitrocellulose undergoes further treatment.
`Having now fully described my invention, what l desire to claim and protect by Letters Patent is:
l. ln a drier for nitrocellulose, the combination with a heating chamber, of an imperforate cylinder extending within the chamber, the upper part of the cylinder being formed of rigid material and held in rigid and permanent relationship to the.f
lower part lof the cylinder 'and which is thin relatively thereto and which is thereby adapted, in the event of accidental :tiring of the nitrocellulose during drying, to olfer inferior resistance to the explosive force, whereby danger to the operatives and destruction of the main part of the drier are avoided. I
2. lin-a drier for nitrocellulose, the combinationwith a heating chamber, a cylinder extending within the chamber, the upper part of the cylinder being formed of relatively light material so that Ait will readily rupture in the event of explosion, and a relatively heavy support extending over the cylinder.
ln testimony of which invention, ll have hereunto set my hand, at Vfilmington, Delaware, 'on this 12th day of d une, 1917 runners i. DU Pour.
US18122717A 1917-07-18 1917-07-18 Drier for nitrocellulose. Expired - Lifetime US1301409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US18122717A US1301409A (en) 1917-07-18 1917-07-18 Drier for nitrocellulose.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18122717A US1301409A (en) 1917-07-18 1917-07-18 Drier for nitrocellulose.

Publications (1)

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US1301409A true US1301409A (en) 1919-04-22

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US18122717A Expired - Lifetime US1301409A (en) 1917-07-18 1917-07-18 Drier for nitrocellulose.

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452249A (en) * 1946-03-04 1948-10-26 Roy R Leiske Drier for granular plastic
US3016626A (en) * 1958-09-10 1962-01-16 Emery L Kompus Grain dryer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452249A (en) * 1946-03-04 1948-10-26 Roy R Leiske Drier for granular plastic
US3016626A (en) * 1958-09-10 1962-01-16 Emery L Kompus Grain dryer

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