US581069A - Thomas j - Google Patents

Description

QN" Moc'lel') T. J. GRIFFIN.

' G oTToN GIN.

i UNTTnn STATESl THOMAS eT IGRIFEIN, OF GALVESTON,

TEXAS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, OF FOUR-FIFTHS TO H. RIEDEL, ED. MCCARTHY,

AND N. VEEKS, OF SAME PLACE.

COTTON-GIN.

SPECIFICATION forming part of Letters Patent No. 581,069, dated April 20, 1897. Application iiled January 20, 1896. Serial No. 576,217. (No model.)

To all whom, it may concern:

Be it known that I, THOMAS J. GRIFFIN, aA citizen of the United States, residing at Galveston, inthe county of Galveston and State of Texas, have invented a new and useful Cotton-Gin, of which the following is a specification.

This invention relates to cotton-gins; and it has for its object to provide a new and use- Io ful saw-cleaning attachment for gins of that character employing a cylinder or gang of saws.

To this end the main and primary object of the invention is to dispense with the use of the ordinary cleaning-brush which is usually arranged at one side of the saws for the purpose of cleaning the lint or fiber therefrom. The employment of rapidly-revolving cleaning-brushes in connection with the saws of the gin is attended with many disadvantages, such, for instance, as the necessity of a constant read justment of the brush with relation to the saws and the great risk of fire caused by the intense friction resulting from the rapid rotation of thesaw-bristles in contact with the saws.

The present invention therefore provides simple and efficient means for positively relieving the saws from the fiber or lint clinging 3o thereto without any of the objectionable results incident to the employment of the cleaning-brush.

With these and other objects in View, which will readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination, and arrangement of parts hereinafter more fully described, illustrated, and claimed.

In the drawings, Figure 1 is a sectional view 4o of a cotton-gin equipped with the herein-described saw-cleaning attachment. Fig. 2 is a transverse sectional View on the line 2 2 of Fig. 1.

Referring to the accompanying drawings, l designates the casing of an ordinary saw cotton-gin having therein the usual cylinder or gang of gin-saws 2, arranged closely together and operating in connection wit-h the ordinary saw-ribs 3 to provide for tearing or separating the lint from the seed in the usual manner.

In the present invention the cleaning-brush, which is usually arranged at one side of the saws for the purpose of cleaning the lint or fiber therefrom, is dispensed with, and in place thereof a blast of air is employed to effect the necessary cleaning of the saws. This blast of air is supplied through a blast-supply pipe 4, which is preferably arranged on top of the gin-casing and maybe used in connection with a battery of gins, said blast-supply pipe 4 being conveniently connected with a suitably-arranged blast-fan which forces air under pressure through the pipe.

The blast-supply pipe 4 on top of the gin casing or stand has fitted to the under side thereof the upper ends of a series of depending blast-nozzles 5, being arranged in the same number as the saws 2 of the gin, so that a single blast-nozzle will operate in connection with each separate saw. The blast-nozzles 5 are forwardly inclined and are provided at their lower ends with the curved jet-tips G, which lie directly beyond and adjacent to the peripheries of the saws, so that the air blast or current will be forced directly on the teeth of the saws to provide for positively blowing the clinging lint or fiber off of the same and into the lint-discharge flue 8, built within the gin casing or stand and leading from a point directly at the rear side of the saws out to one side of the casing or stand.

The curved j et-tips 6 at the lower extremities of the blast-nozzles 5 are disposed in a position adjacent to the peripheries of the saws and directly at the upper side and inner end of the discharge-flue 8, so that the blast of air will be directed downward against the teeth of the saws and against the inclined deflecting-board 9, arranged transversely at the lower side and inner end of the discharge-flue The inclined deflecting-board 9 is disposed in very close proximity to the peripheries of the saws 2, in a plane in direct alinement with the disposition of the curved jettips 6, so that the blast of air from the jettips and the lint carried therewith will strike the upper side of the said board and will be deflected outward through the discharge-Hue 8, from whence the lintis carried to the condensers in the usual way.

At a point intermediate of its inner and outer ends the substantially horizontal disn charge-ii ue S is provided in its lower side with a bottom mote-escape opening l0, which allows sand and other motes loosened from the lint to iind its escape out through the discharge-Hue and into the bottom of the casing or stand of the gin.

In connection with the operation of the blast-nozzles 5 it is to be noted that it is very important that a blast of air is forced directly on the teeth of each saw, because it will be readily understood that since each saw pulls its own body of cotton through the ribs 3 it is necessary that a separate blast be directed on the teeth of each saw in order to provide for properlyv removing the clinging lint or iiber therefrom, which result could not be accomplished by an arrangement of the blastnozzles between the saws. Furthermore, the disposition ot the dellecting-board 9 not only provides for the proper outward deflection of the air and cotton, but also allows the blast of air from each jet-tip 6 to reach anumber of teeth on each saw and thereby obtain a lifting purchase behind the lint or ber clinging thereto, as will be readily understood by those skilled in the art.

Changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this inyention.

Having thus described the invention, what is claimed, and desired to be secured by Letters Patent, is-

In a cotton-gin, the combination with the casing 'and the gin-saws therein; of a discharge-flue arranged within the casing and provided at its lower side and extreme inner end with an inclined delecting-board having its upper edge disposed in close proximity to the peripheries of the saws, a suitablywarranged blast-supply pipe, and a series of blastnozzles depending from said pipe and having at their lower ends curved jet-tips disposed in close proximity and tangcntially to the toothed peripheries of the saws and in direct line with the upper side ot' said detlectingboard whereby the blast will skirt anumber of teeth on the saws before reaching said board, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

THOMAS J. GRIFFIN. lVitnesses:

JOHN Il. Sreenns, HAROLD Il. Smits.

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