US928009A - Pulper. - Google Patents

Description

" J. L. WALTON.

PULPER. APPLLQATION FILED JULYG, 1907. RENEWED MAY 25, 1909.

Patented July 13, "1909.

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.INVENTOR J- L..Wa lf'on' ti'omey S r JOSEPH LENARD WALTON,

or rmo n, CALIFORNIA.

'PULPER.

'- Specification of Letters Patent.

Iatented July 13, 1909.

Application filed July 5, 1907, Serial 30-382375. Renewed May 25, 1909. Serialiio. 498,373. v

. rovements in pulpers; and more particuarly to that class adapted to be used in preparing gun cotton and my object is to provide a device of this class whereby the cellulose used as the body of the guncotton will be thoroughly disintegrated during the process of nitration. I Y

A'further object is to provide means .for adjusting the arts ofthepulpingmechananlsm and a still further object is to provide means for removing the guncotton from the pulper when the 25 same has been thoroughly nitrated. l Other objects'andadvantages will behereinafter referred to, and more particularly;

pointed out in the claims.

In the accomplanyingidrawings which are made a part of t is cationpl igurel is a top plan view of my improved form of pulper complete. Fig.2 is a side elevationthereof. Fig. 3 is a sectional view as seen on line- 33, Fig. 2. Fig. 4 is asectional view as seen on line 44, Fig. 1 and Fig. 5 is a plan view of a plate employed in connection with the device i'or pu ping purposes. I It has been the custom heretofore in ing the acids with the guncotton to employ certain classes of jars or nitrating centrifu 'gals and it has been found in employing this I term of apparatus, that portions of the cot: ton Wlll not become thoroughly saturatedwith the acids, thereby forming what, is F known as low nitrates, Which will result in dc-.

composition and the powder so formed will not stand. the heat test and to this end I have provided my improved .i'orm ol' pulper, which consists of a tank 1; which is preferably oblong an d has curved end walls 2 andB. A vertical partition t extends through the central portion of the tank and is of less length than the tank, to form passages 5 and, 6 around the ends ol the partition. Extending laterally through. th'ecentral portion of arrow 19 in Fig. 4

the tank 1 is a shaft 7, on which is mounted a.

' drum 8 said-drum being. located between one side wall of the tank and the partition 4 and the periphery of the drum is" rovided with a plurality 'of blades '9, w ich are adapted to cooperate .with'a plurality of ribs 10, carried by aplate 11,sa1dplate.and'

ribs being fixed to a raised portion 1216f the bottom of the tank and theplate and ribs thereon. are curved to conform to the peripheral surface of the drum; 8. The shaft 7 is extended through slots 13in the side walls of the tank and the. partition 4 and the outer ends thereof are supported in bearings 14 whichare in turn supported on the 1; er ends of screws 15, said screws passlng through ears 16 carried by the sidewalls of the tank and by thiswonstruction it willbe seen that the drum 8 may be readily adjusted toward or from the ribs onthe plate 11., therebygiving a finer or coarser granula passing between the tion to the cellulose drum and the ribs.

' In operation, a pro-determined qi'xantity of i n introduced into the tank through any suit- Y a proper mixture of nitric and sulfuric acid is able form of feed pi e 17, after which the dis integrated materia is introduced ,into the tank. through an o ening 18 and by rotating thedrum in the ireetion indicated by the i of the drawing, said mate rial will be passed between thev blades on the periphery of the drumand :the ribs on the a plate 10, thereby thoroughly disintegrating the material while immerse in the acid. The drum 8 traveling in the-direction indicated, will agitate the acid and form a current from end to end oi the tank, as indicated by 'the arrow 20 in- Fig. 3 of the drawings.

; The raised portion 12 0i the bottom of the tank at-the right of the drum 8, is elevated to a point co-incident to the depth of the acid in the tank and, the disintegrated material after passing between the drum and plate is thrown over the elevated end 21 of the raised portion 12 onto a grate 22, which is hingedly secured at one end immediately below the end 21, while'the opposite end thereofis provided with an angu ar guard 23, so that the said. materialwill be gathered on the grate and held until such time as it is desired to remove the completed product. The free end of the grate 22 is also provided with an arm 24 to the free end'of which is secured a rod 25', by which means the grate is raised or lowered and by lowering the free end of the loo grate while the pulping process is being per- 1 a point formed, the disintegrated particles (ii nit material will still remain immersed in theacid'when deposited upon the grate 22 and after the pulping process is completed, the grate 22 is elevated to a-horizontal o'sition and in alinement with the lower e go of a port 26 in one wall of the tank, said port being normally closed by means of a door 27, a spout 28'being secured to the outer wallof t e tank, so that the product may be more readily removed through the port. The cellulose'is introduced mto the tank at between one of the walls of the tank and the partition 4 and adjacent the drum '8, so that the cellulose will pass directly into engagement with the drum and as the grate retains the disintegrated particles, that por- 4 I tion of the fluid at the opposite side of the,

partition from that occupied by the drum 8 will be substantially free-from the cellulose.

: It will be seen that by causing the acid to with more or less force. The amount of acid travel from end to end of the tank, the material on the grate will be thoroughly saturated with the acid as the acid in passing overthe end 21 will'engage the material on the grate I 1 -em loyed depends upon the quantity of material placed in the tank and the stated proportion issubstantially 75 'ounds of the acid to 1 pound of said material, and at the removal of. each batch of the prepared guncotton from the acid mixture, a certain amount oi the acid is removed therewith, thereby requiring the constant replenishing of the acid mixture, which may be regulated by means of a glass gage 29, which is preferabl secured to one side wall of the tank an hasthereon, whereby the amount of graduations the tank maybe readily ascerthe acid in tained. I

The up er surface of the tank 1 is provided with suitable ventilators 30, throu h which fumes of the acid escape, while tie opening 18 is provided with a-lid 31 to prevent fumes irom esca ing through the'opening. The cover of t e tank 1 is also provided with a plurality of transparent sections'32 of lass, mica, or similar substance, so that a view of the interior of the tank may be readily had. By this manner of mixing the material with the acid, it will be seen that disintegrated material will be thoroughly saturated with the acid, thereby obviating any possibility of decomposition of the guncotton drum, a grate The blades 9 and the ribs 1 0 are preferably constructed of metal, so that they-will not become easily broken and will thoroughly separate the particles of cellulose passed between the drum and plate, and the ribs 10 are inclined from the central portion of the plate 11 to the outer edge thereof, thereby formin said ribs substantially V-shaped. at I claim is:

' '1'. A pulping engine of the character described, comprising -a tank having a midfeather, a suitably driven drum equipped with perimetric radial blades, a plurality of ribs arranged below said drum, a concaved upraised member arranged under said drum and equipped with said ribs, and a grate hinged orivotedat one, end to said upraised mem er at its delivery end, the opposite end ofsaid grate being suspended from, andhaving connected thereto an adjusting screw-threaded member working in a fixed screw-threaded sleeve.

2. In a device as described, a tank having a longitudinal central partition therein wit its ends arranged short distances from the ends of said tank, a suitably driven drum having radial perimetric ribs thereon and ac'oncaved up-raised portion in the bottom of said tank "equipped with a series of ribs adapted for coaction'with the ribs on said having one end pivoted at the delivery end of said up-raised portion, and an adjusting means for controlling the disposition of said grates 3. In a device as described, a tank having arranged therein 'a longitudinal central partition with its ends stopping at short intervals from the ends of said tank, a suitably driven drum equipped with a series of radial ribs, a concaved up-raised portion arranged in said tank, below said drum andprovided with a series of ribs'adapted for cooperation with said drum,'a grate hinged at the delivering end of said raised portion and provided with anupstandi'ng guard, and an adjusting screw pivotally connected to the outer end of said rate.

In testimony w ereof I have signed my name to this specification in the presence of two subscribing witnesses.

I JOSEPH LENARD WALTON. Witnesses l J. P. BARRETT, J\ W. Townns.

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