US1286297A - Strainer. - Google Patents

Description

narrar oriana-ji;

nier-inno irnianrni., or riaiiiiirtiiv', araseacnusn'r'rs, assreivon or FonTY-Nriir.

orin--riuii'nnnnrrns ro r. n. irriteren a son, rue., or nosroiv, MASSACHUSETTS, a

STRiltINER/i Speccation of Letters Patent. i

` application filed February 16, 191e. Serial No. 921%',936.

To all cowmz't may concern."

it ,known that L HANS Bierman Hana rrr.. aeuhject of the Emperor of Germany, anda` resident of Franklin, in the county of llltirlfoll: and State of Massachusetts, have i invented certain new and useful linproveineiits in Strainer-s, of which the JfollowingI is 1 any decrease in the tensile strength and llti elasticity of the material.

ill .further ologect et the invention is 'the provision of means whereloy lumps in the material may loe broken up or removed and in this manner cause the material to he uni-` forni,

The invei'ition consists of a head which may he attached to or termed upon any existing 4torni of straining' or tubing machine, and 'which provided with a cone-shaped strainer olf line mesh superimposed upon a cond-shaped support removable from and adjustalile .in the delivery opening of said head.,

,i 'lhe invention further consists of serrating the Wall of the delivery opening there- V'hv hrealring up the lumps passing through rl opening, and, retardinp; the outer por f tion ollhe material as it passes between said serrated wall and the cone screen.

The invention jliurther consists in providingr means whereby the unstrained portion olE thc inaterlal may he collected and 'forced tion one preferred torni tliereot' is lillustrated he purpose et illustrating; the invenin the drawings, this form having been found to give satisfactory and reliable results, although 1t is to hev understood that `the various instrumentalit-ies of Which-the invention consists can be variously arranged and organized and the invention is not limited to the precise arrangement and organiza@` tion of these-instrumentalities as herein shown and described, except as required by the scope ot the appended claims. 0f the drawings: c

Figure 1 represents a section ,of a strainer head embodying lie pl'inciplesot' the present` invention, and y y Fig. represents an end elevation of the saine With the cone shaped strainer audits support removed from the discharge open-` ing.

Similar characters designate `like y parts throughout the several yfigures ol the drawings. i y

ln. the drawings is a cylinder for'rn'ing a part `oit a strainingfmachine adapted to strainplastic material such, for instance, as rubber.

Vlithin the cylinder l0 is a revoluble shaft 11 having 'formed thereon or secured thereto a screw 12 adapted to force the` plastic material 'vaithin said cylinderlO tovvard the discharge end of said cylinder.

This discharge end of the Vcylinder is provided with an annular chamber 13 to Which a temperature regula-ting medium may be admitted through the'lpipe 14.A

The inner Wall 15 of the discharge opening is inclined invvardly7 and toward the'outer end of the cylinder 10 thereby'lliorming a contracted mouth 16 from which the Wall Flares outwardly as shovvn in Fig. 1Q i This outwardly flaring' portion of the wall 15 is provided with a plurality ofannular grooves 17 having shoulders facing the ,contracted mouth 16.

rl`hreaded tothe outer end of the cylinder l() is a closure 18 with a` shoulder 19thereon hearing against the end tace offsaidv cylinder. y

lnto the closure 18is threaded a tubular inernber 20 the inner end Q1 otyvvhich is cone-shaped and provided with a plurality of large perlorations. l

leinovahly mounted 'upon fsaid conesliaped end 2l is a cone-shaped screen 23 hot tine mesh which may be' removed when dc- Patented -Dec. 3.; luth..

sired in order to clean the same or in order to replace it 4with another screen of a different mesh, it being obvious that for different materials different screens are desirable, and even for the same material under different conditions.

The outer wallfof the cone-shaped `end 21 is preferably substantially vparallel with the serrated or grooved wall portion of the dis-- der 10.

The plastic material may'be delivered to the interior of the cylinder 111 any well known manner and by means of the rev- -olublescrew 12 this stock is forced through the contracted mouth 16 into the annular passage 24 between the water cooled chamber 13 and the fine meshed screen 23 on the cone-shaped support 21.

The size of the annular passage 24 may be varied by-rotating the tubular member 20 by means of the head 31 thereby moving the cone-shaped end 21 inwardly or outwardly as desired. As the material passes through the passage 24 the outer portionsy thereof will'be retarded by the shoulders of the grooves 17 while that portionA of the stock ynext to the screen will be moved faster.

This results in the cooling medium in the chamber 13 strengthening the outer portion of the material while the inner portion thereof next the screen 23 will retain its puttyflike consistency.

AsaI consequence of this unequal forward movcn'lent of the material due to one portion thereof being retarded in its movement whilel the inner portion moves lunch faster than theI retarded portion, any lumps that there may be in the stock are torn apart ami-broken up while at the same time all impurities on the screen 23 are pushed forward and ott' said screen thus automatically cleaning said screen.

All impurities and lumps will pass the entire length of the annular passage 24 into `the frroove or chanibcr 25 from whichthev may be conveyed through the pipes 27. 2%) and 30 into the interior of the cylinder 10. The valves 28 are adapted to regulate the passage of thomaterial returning tothe cylinder.

By raising the temperature of the medium 'in the chamber 13, the lumps will not be broken up, but will be forced out from the passage 2l with the impurities and can be collected for separate treatment.

Heretofore the plastic material has been forced through the screen in a direction perpendicular to said screen and the screen cone-shaped support 21 to be' finally discharged through the tubular member 20 while the impurities and lumps will be car ried down the surface of the cone into the overflow pipes as heretofore described.

rl`his makes a most edective strainer the screen of which will be automatically cleaned by the material as it is forced out-vr wardly through the annular passage .24.

The screens may be quickly changed thereby preventing the loss of time which has formerly been incurred in other styles of strainers.

Byv giving the line mesh screen a rigid perforated backing the breaking of or injury to the screens is etfectually overcome.

Where the material is forced directly toward a. screen disposed transversely of the path ofmovement of the material, said material is liable to be Ichurned and overheated thereby causing an enormous decrease of tensile strength and elasticity in the rubber. These objections are wholly obviated when the device herein shown and described is used.

By providing a means for breaking up or removing of all lumps from the material, the material is more uniform and the tensile strength and elasticity thereof is greatly increased.` It is believed that the operation of the invention and its many advantages will be thoroughly yunderstood without further description.

Having thus described my invention, Il

claim: l

1. In a device of the class described, a discharge tube having a contracted passage terminating in a flaring conical mouth, the wall of which is provided with a plurality of annulai` seri-ations; means for forcing plastic material into said tube; and a cone-shaped screen positioned in the mouth of said tube.

2. In a device of the class described, a discharge tube having a contracted passage terminatingin a flarmg conical mouth the wall of which is provided With a plurality of annular material-retarding shoulders; means for forcing plastic material into said tube; and a Cone-shaped screen positioned in the mouth of said tube.

3. 1n a device of the class described, a disnaamw charge tube. having an outwardly flaring cone-shaped mouth; mans for vt'orcing plastiel material into said tube; a hollow cone-shaped support in said mouth removed and disconnected from said forcing means' and provided with plurality otl perforations through its wall7 the outer tace of which is substantial] f parallel with, but Separated trom the wall ot' said cone-shaped mouth; and a removableA cone o n said support o'pen only at one end and having a plurality ot' perfor-ations therein smaller than those in said support. 1

L ln a device ot' the-elass described; a discharge tube having an outwardly flaring cone-shapial mouth surrounded by a chamber adapted'to contain a ten'iperature regu*v lating medium; means for forcing plastic material into said tube; a hollow cone-shaped support in said mouth having a clear passage from its peak to its open outer end and provided with a )lurality of pert'oi'ations through its wall, tlie outer t'ace ot' which is substantially parallel with but separated from the wall ol said cone-shaped mouth; and a removable cone on said support haw ing a plurality ot' pertorations therein smaller than those in said support adapted to be removed endwise from said support.

5. ln a device ot' the class described, a discharge tube having an outwardly Haring cone-shaped mouth; means tor4 t'oreing plastic material into said mouth; a coneshaped screen in and separated from the wall ot' said mouth by an annular passage; and means outhe wall ot' said mouth t'or retarding that portion ot the material adjacent thereto.

(i. In a device of the, class described, a discharge tube having an outwardly flaring cone-shaped mouth; means't'or forcing plastie material into said. mouth; a 'cone-shaped screen in and separated from the wall ot' said mouthby an annular passage; means on the wall of said mouth for retarding that portion of the material adaeent thereto; and

titll means .for collecting that portionvof the material passing entirely through said annular passage and returning it to the source ot supply.- i 1 l 7. Ina device of the cla-ss described, a discharge tube; a euri-shaped member threaded thereto and provided with an annular chamber; a. cylindrical member threaded to said cup-shaped member and provided with a,

perforated cone-shaped end extending into i forcing said material into said tube.l

I tube.

S. In a device of the class described, a discharge tube, a @up-shaped member threaded thereto and provided with an annular chamber; a Cylindrical member threaded to said eupshaped member and provided with, al

lperforated cone-shaped end extending into said tube and forming therewith an annular passage communicating with said chamber;` a system ot' piping eonnnunicating with said ehamber and leading to the source of supply; means for regulating the discharge through said system of piping; and means for forcing material into said tube. t

9. In a device ot' the class described, a discharge tube; a cup-shaped member threaded thereto and provided with an annular chamber; a cylindrical member threaded to said cup-shaped member and provided with i perforated coneshaped end extending `into said tub and forming therewith an annular passage communicating with said chamber; an annular pipe surrounding said cupshaped-member; radial pipes leadingl from said chamber to said annular pipe; apipe leading from said annular pipe. to the source ot' supply ot' said material; and means for lll@ 1U. ln a device ot' the class described, a discharge tube; a cup-shaped member threaded thereto andy provided with an annular chamber; a eyliudrical member thread ed to said cup-shaped member and provided with a perforated cone-shaped end extentiing into said tube and forming therewith au` annular passage communicating with said chamber; an annular pipe surrounding Said cup-shaped member; radial pipes leadingv from said chamber to' said annular ipe; a valve in each radial pipe; a pipe ending tfrom said annular'pipe to the source of supply oftsaid material; and means for forcing said material into said tube. A

Signed by me at t Post @Hice Sq., Boston Mass. this 6th day of February, 1918.

.HANS RO/HARD HAERT 2L.

Witnesses f WALTER E. LOMBARD, I

NATHAN C. LoMAnp.

Images