US1128056A - Pump for wool-washing machines. - Google Patents

Description

P. e. SARGENT. UMP FOR WOOL WASHING MACHINES.

APPLICATION FILED APR. 15, 1914. A L, Patented Feb.9, 1915.

Y fr

FREDERICK G. SARGENT, OF WESTFORD, MASSACHUSETTS, ASSIGNOR TO C. G.

SARGENTS SONS CORPORATION7 OF GRANITEVILLE, MASSACHUSETTS, A COR-PO- RATION OF MASSACHUSETIS.v

PUMP ron WOOL-WASHING MACHINES.

i ,respira Specification of Letters Patent.

Patented Feb. if, 1915..

T0 all /iem/m it may conc-ern le it known that I, Fnnnnmek G. SAnGnNT, a citizen of the United States, residing at vVestford, in the county of Middlesex and State of Massachusetts, have invented 'a new and useful Pump for /Vool-Washing Machines, of which the following is a speeification.

This invention relates to the discharge of the liquor from the catch basin under the press rolls of a wool washing machine into the settling tank thereof.

The principal objects of the invention are to provide for accon'lplishing this operation in such a, way as to avoid the churning and foaming of the liquor; to avoid stirring up the sediment in the bottom of the catch basin from which the liquor is drawn; to deliver the liquor into the settling tank in a smooth and easy manner; and at the same time to provide an apparatus for this purpose which shall have no valves to clog up and no small parts that can catch the libers and thus have their efliciency reduced.

The invention also involves improvements in details of construction and combinations of parts as will appear hereinafte'r.

Reference is to be had to the accompanying drawings in which-- Figure 1 is a perspective view of a portion of a wool washing machine with a preferred embodiment of thisinvention applied thereto; Fig. 2 is a sectional view of the same on a vertical plane parallel to the side of the tank through the central axis of the pump; and Fig. 3 is aside elevation of one of the sections of the pump.

The pumping of the liquor from the catch basin of a wool washing machine to the settling tank is an operation that presents considerable diflieulty. This liquor has soap and alkali dissolved in it and also contains woolibers and a great deal of sediment. The ordinary lift pump is not suitable for this purpose because its valves 'clog up with mud and sediment in a short time and further on accounty of the plunging action which churns up the liquor and causes it to froth the foam. The fibers also get into the valves and act similarly to the sediment. This :foaming action is a condition to which this liquor is especially subject on account of the materials put in to wash the wool. The eh'ain bucket pump is somewhat better but it also produces the churning action and 'v way much valuable scouringy soap is wasted.

To prevent this loss it is customary to cover or seal the tops of the settling tanks. I have discovered that by the use of a helical screw pump constructed in a certain Way all this excessive. foaming is avoided; the liquor is left in a better condition in the settling tank to allow the impurities to settle; the sediment in the catch basin is not stirred up; the cover over the settling tank is dispensed with; and a greater settling of dirt in the settling tank is secured. Of course this is thelprime, and in'fact the only object of this tan Referring now to the accompanying drawings, it will be seen that the invention is applied to a wool washing tank a of ordinary construction having a set of press rolls l; provided with a catch basin c under the same for catching the liquor therefrom. The settling tank b is provided along the vside of the main tank. The problem is to get the liquor from the catch basin, or at least that part of it which does not settle at the bottom in the form of a sediment, into the settling tank in such condition that it will not stir up the liquor already in there so that the settling operation may take place with the greatest etiiciency and speed. The settling tank of course delivers back into the bowl in the usual way. For the purpose of accomplishing these results the catch basin is provided with an outlet l() near the top connected through a pipe 11, preferably horizontal, into the inlet 12 of a stationary cylindrical casing 13. This casing is located at the side of the settling tank and its inlet is located above its bottom for a purpose which will appear. At the bottom of this easing is a step 14 having a conical top 15. (.)n this step is a seat 16 preferably of phosphor bronze or the like having a conical recess in the bottom fitting the cone 15' and securely fixed to the bottom of a shaft 17.

fixed to the shaft and a section of the blade 20 cast integraljtherewith. Each of these sections preferably' g`oes entirely around the shaft. These sections canbe strung on the central shaft and fastened thereto by set screws so as to make a, complete helix. The bottom end of each sectionof the helix fits the top end of the next oneV secured below. This forms a convenient construction for 'manufacture and permits ready repairs. The 'seat and step alsocan be removed and replaced readily in case of/wear.

It will be noted that the bottom of the helix, including the entire lower convolution, goes down below the bottom of the inlet 12 so that there is a natural head of waterv above the firstcomplete convolution of the helix. It willalso be noted ,that the edge of the blade constituting this convolution of the helix, -that is, the lower section, is sharpened. Now when the shaft rotates 'the helix, ,which ts the inside of the cylinder, is rotated and the liquor lifted gently and uniformly without causing any pulsating vaction either at the inlet or the outlet. In this way a steady stream of liquor is drawn off from the catch basin and passes away from it in the same manner as would be the case if it were allowed to flow out by gravity. The same condition prevails at the outlet 23 from which the liquor is delivei'jed by the same easy motion into the top of the settling tank. It will'be noted that this outlet is in the form of acap 24 fixed on the top of the casing 1,3 and extending over the top ofthe settling tank. This casing is provided with a bracket 25 for supporting the upper end of the shaft 17 and another bracket '26 for supporting the idler `pulleys 27. In other words it carries the immediate driving mechanism for the shaft 17. The

compression grease cup28 on the outside of the casing and the lower end of the casing is provided with a hand hole 29 which can be opened for cleaning purposes and reairs. In this way the liquorisdischarged rom the catch basin and delivered into the settlingv tank with an easy, steady, and lini Vform ow incapable of causing agitation, g

churning, and foaming and by a mechanism which does not involve any valves or other small parts likely to get clogged up by sediycan be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore I do not wish to be limited in these respects but What I do claim is 1. The combination with a tank, a catch basin, and a settling tank for delivering liquor into the tank, of a pipe leading from said catch basin, a stationary vertical cylinder located adjacent to said settling tank and having an in-take above the bottom thereof into which said pipe extends, a vertical shaft supported on the bottom of said cylinder and extending up through the to thereof, and a helical blade about said sha t and adapted to rotate therewith, said blade extending down below the outlet of the catch basin whereby the water from the catch basin willenter the bottom of said casing and stand therein normally and be lifted without foaming or churning when the shaft is rotated, said casing having an outlet delivering into thetop of the settling tank.

` 2. In a device of the character described, the' combination of la cylindricalcasing, a rotatable screw in said casing made up of a plurality of sections each havin a blade constituting one convolution of a helix, and means for rotating saidscrew.

3. In a deviceofl the character described, the combination of a stationary vertical cylindrical casing having an inlet .above the bottom thereof, a verticalrotatable screw insaid casing extending below the bottom of said inlet, made up of a plurality of sections each having a blade-constitutin one convolution of a helix, the edge ofthe lade of the lowest section being sharpened, means for rotating said screw, and anoutlet from said casing at thetop of said screw.

In testimony whereof I have hereunto set my hand, in the presence of two subscribing wltnesses.

FREDERICK G. SARGENT. Witnesses:

CHAs. G. SARGENT, OsoRN H. CIILLEY.

Images