US839533A - Beater. - Google Patents

Description

PATBNTBD DEC. 25, 1906.

F. J. WOLFF.

BEATBR.

APPLIUATION FILED uns rn: NoRRls Permis co.. wAsmNaraN. n. c.

FREDRICK J. WOLFF, OF KANSAS CITY, MISSOURI.

BEATER.

Specication of Letters Patent.

Patented Dec. 25, 1906.

application filed May 3, 1906. Serial No. 315,066.

To all whont t 71u03/ concern.'

Be it known that l, FRIEDRICH J. W'OLFF,

a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Beaters, of which the following is a specification.

This invention relates to rotary beaters for sack-cleaning' machines; and my object is to produce a device of this character of simple, strong, durable, and cheap construction and which will thoroughly and efficiently clean flour-sacks and other fabric sacks without injuring them.

To this end the invention consists in certain novel and peculiar features of construction, as hereinafter described and claimed; and in order that it may be fully understood reference is to be had to the accompanying drawings, in which- Figure l is a plan view of a rotary beater embodying my invention. Fig. 2 is a crosssection of the same. Fig. 3 is a cross-section of a slightly-modified construction of the same. Fig. 4 is a sectional perspective view of a second modification.

ln the said drawings the shaft of the beater comprises a body portion l, which is preferably of rectangular form in cross-section, and

cylindrical ends 2, adapted to be iournaled in any suitable bearings. (Not shown) At suitable intervals the body portion l 1s provided with threaded passages 3 to receive screw-bolts 4, which extend through rubber or equivalent flexible strips 5 and clamp the same rigidly to opposite sides of the shaft. ln my preferred construction the rubber strips 5 are formed integral, with oppositely-projecting portions 6, by preference slightly narrower than strips 5, and said portions 6 are riveted, as at 7, to strips 5 near the outer edges of the latter.

ln Fig. 2 the strips 5 extend horizontally and the portions 6 converge outwardly with respect to said strips, whereas in Fig. 3 the strips and the engaging portions 6 both incline outwardly, the latter construction being less flexible than the former, because its strip 5 and portion 6 at the point where they are fastened together tend to move in planes which intersect each other at greater angles than the corresponding point of said strip and portion in Fig. 2, as will be seen by reference to the intersecting dotted arrows in j b being struck from and flexible said figures, the arrow l l l l l the axis of movement of strip 5 and the arrow c from the axis of portion 6 in each figure. In practice both types of construction operate efficiently and reliably.

In the construction shown by Fig. 4 the strips 5 are braced against excessive flexibility by wood blocks 8 instead of by the rubber or equivalent braces 6 of the constructions above described, such wood blocks being of sufficient thickness when fitted against said strips and the opposite sides of the shaft to project beyond opposite edges of the latter, so as to provide shoulders 9, against which the inner ends of the strips fit, it being unnecessary to fasten the blocks 8 to the shaft cxcept through the instrumentality of the strips, because the resistance of the sack being cleaned is suflicient to cause said blocks to press inwardly at their inner edges against the sides of the shaft. Material movement in the opposite direction is prevented because the strips are of heavy material and bend but slightly contiguous to the shaft.

10 indicates sheet-metal cap-plates covering the heads of the securing-bolts 4, and secured at their edges, as at ll, to the strips 5, said securing devices ll being also utilized, if desired, as the means for securing the strips and braces S together. These caps perform an additional function-namely, to prevent any ravelings of the sacks from catching onto the screw-bolts, which might result in injury to the sacks. If desired, these caps may also be used in the constructions illustrated in Figs. 2 and 3.

From the above description it will be apparent that l have produced a rotary beater for use in sack-cleaning machines which possesses the features of advantage enumerated as desirable in the statement of the object of the invention, which obviously may be modified in other particulars without departing from the principle of construction involved.

Having thus described the invention, what I claim as new, and desire to secure by Letters Patent, isr

l. A rotary beater, comprising a shaft, a iiexible strip secured to said shaft and projecting beyond one side of the same, and a brace secured to said flexible strip and engaging said shaft.

2. -A rotary beater, comprising a shaft, fiexible strips secured to said shaft and pro- 'ecting beyond opposite sides of the same, braces converging outwardwith IOO IIO

respect to the strips and secured to the latter i outer edge of the latter, and means for clampand engaging the shaft. ing said strip and brace rigidly to the shaft. Io 3. A rotary beater, comprising a'shaft, a In testimony whereof I aiiX my signature flexible strip engaging the same and projectin thepresence of tWo Witnesses.

ing beyond one side thereof, a brace engaging FREDRICK J. VVOLFF` the shaft at its opposite side from said strip I WitnessszR I H. ODGERS,

G. Y.- THORPE.

and projecting beyond the same side of the Shaft and secured to said strip inward of the

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