US1630789A - Plaster mixer - Google Patents

Description

Patented May 31, 1927.

N STATES FAT NEWMAN ESSICK, on LOS ANGELES, CALIFORNIA.

PLASTER MIXER. V

Application fi led September This invention relates to a mixer for cenientitious material and the like. A pop1ilar typeof mixer is a portableunit comprising a frame supported upon ground wheels and carrying an engine, a mixer, and gearing connecting the engine and mixer. The present invention is in no way limited to such a unit but is especially useful in such an ag roupment and will be described as embodied therein. V

In mixers of the character described, frequent dumping of the fbatches 'is'required. \Vhereplaster is mixed, frequent washing of the mixing vessel is also necessary. The present invention contemplates-a mixer-having as a mixing receptacle an' 'open drum,

in which a novel rotary impeller or shovel is disposed. The mixer is dumped by turning the drum about the impeller shaft axis. To provide stability during, the mixing op eration, the drum is arranged'to beturne'd only in one direction, the turning movement in the other direction being limited; The

resultis that the drum must be turned "to dumping position for discharge of the wash ing liquid' lVashing in this manner requires that the mixer be moved away from the batch receiving receptacle or that the latterbe moved, in order that the'washing liquid may not be discharged therein. The primary objectjofp the presentinventien is; to providea' mixer having ajfdrum WlliQll. may be turned tozone side for" duinpin-gthe' batch, tu'rnedto the opposite side for dis I tained by means of the embodiment of my inventionillustrated in the accompanying drawing, in which:

Fig. 1 is'a side elevation of a portable mixer unit; Fig. 2 is a side elevation on an enlarged scale as seen looking in the direction of the arrow of Fig. 1, the'position' of the drum in mixing position being shown.

in full lines and the position in batch dumping. position being indicated by the dotted s, 1924. 'seriaiiio. 736,466.} 1

NT; orm

l nes, Fig. 3 side elevation of the fdru n 1 a and its mountingon an enlarged scalefa 1 portion of-the" drum being shown broken out 'Fig. 3 is a plan view of'afragmentof the. impeller shown n Fig;3 Fig-. ,t

fragmentary view in Ysection'fonanienlarged' scale as seen on the'line of Fig, 3;;and 'F1g.,5 is a, v1ew asjseen ontheline 5%5 of eferring C "I i i more particularly" to Fig.1, a trailer adapted to be attached to a motor I car or truck is indicated generally by A. A"

housing indicated by "Bencloses thegmotor and associated means for operating the mixer impeller. The inrxerpproper 'is marked C and is shown more in' detail in the other gfigures of the'drawing. v

The frame of the trailerhas mounted thereon bearing standardsfi and 7. Sup

which stir andtrowel the batch. In the present embodiment 'two shovels are shown. Each shovel comprises a pair of arms 9 se-f cured to the shaft andangularly spaced.

Connecting apair of' arms are blades 10 arrangedso that if extended they would wind 1 about the shaft in a spiral. One shovel winds in theopposite direction to the other- The advancing .endsof" the shovels are so arranged withfres'pect to the direction of their revolution in mixing that the'plastic' mass contact with the bladeswill slide longitudinally along the sameand inwardly" ofthe drum. The blades areturned at their inner endsto form scoops-asindicatedfby 11. Secured totheouter ends of the blades", are radial scraper blades 12. These bladesare arranged 'to scrape the heads of the drum, The shaft 8 is-secured tothe engine contained Within the housing B so as to be operated thereby.

Pivotally suspended upon thestandards by means of bushings 13 which are journaled therein, is a drum having a cylindrical shell 14 open at the top. Heads 15 and16 complete the drum.- Secured to the drum is a handle 17 for convenience in turning the drum for dumping. This is the" only device provided for turning the drum. Secured to the heads 15 and 16 areangles 18 and 19.

The legs of the angles are mounted sofas to clear the standards and permit the drum to y be turned. Pivotally -mounted upon the standards 6 and 7 are lock'bars 20 an'd'21.

These bars are arranged so that h thgir v 7 ported by the standards is an impeller shaft 8. Mounted upon the shaft are impeller shovels long arms are, turned to'wardthe'heads iof the drum, the bars will rest against the heads, the lower inner corners of the bars being rounded to permit jith'e.=1latter"t0 be. turned into locking position. When the long arms are turned in an uprightposition,

the angle bars 18 andj19 will clear the standards and the lock bars.

. Suppose, the-lock bars are in locking position as ;shown in "the figures or the drawing, and "theimpeller -is rotating in the di'- reotion of the-arrow shown in Fig. 32. The

drum G-avill" be held against rotation and {the b'at' ch 'within the drum will bethoroughly ;-stirre.tl andeniixedg A i'te'r mixing has been peri'ormed, snafu is desired to dump the batch, handle '17 is 'giaspecl, tl1e druin being turned as indicated in dotted lines in and held against the dragging action batch li'romthe Idrjum, the scooped ends of, .Ithe blades [holding the 'plastio mass against of the impeller. The impellerfforces the slipping inwardly from the "blades and the radial blades scraping the mass "from the heads of the drum. If it is desired to Wash (the -mixergthe ash liquid is applieldkw'hile the drumfis in the mixing Lposition.v To

g dnmp the Wash Water, lock bars 20' and 21 .are. turned to upright position, thereby ,pe'rimitting the drum to be" swung in the oppositedireetionand' to dump 'the liquid upon lt-he; opposite side. fromthe position in Which the, batohesz are dumped. 'v During the wash ing and ,diseharging of the ,Washin g liquid, the impeller may be revolved thereby churnx .ing;;and. agitating the liquid; and thoroughly Wh at I Claim :is: a v

1. A mixer eomprising a 'frame having spac ed g sltandards, a; horizontally disposed rjournall-ed"between. said s'tandards and ;l1av1ng mixing, blades. thereon a :driun susgagement with the drum head to permit the drum to be Iotaltd i'n either direction.

said drum, and locking members onsaid.

standards:"arrangetlto be disposed at vWill in trontof said abutment members ,Where- Thy to hold saidjdrumagains't rotation in -one tlH'GClZIOD,

'Z 'A niXer comprising a frame having "spaced standards, a horizontally disposedlsha'ft ournalled between "said standards and" fhaving'inixingblades thereon, a drum susfl'pendedso as togibe't'urned aboutsaid shaft "and having afnopening forthe introduction "anddischarge of a-chargeo f material said frame being. arranged to perniitflfreelateral ilisohfa'i'ge er said drum on bothsides abutment angles 'egrtending from the heads of said drum, "lock means pivotally mounted on :said standards so as to be swung into registration with said bars to'hold said drum against 'rotationin one direction With its opening uppermost for mixing.

3. A n'nxer oomprisinga frame, a "drum -rotat'ably suspended in said frame an'd'having an opening for the introduction and discharge of ach'arge of material, said'frame being clear of'obstruotions at the side Where bysaid drum maybe turned to 'disehargeat eithersidethereof, means upon said tra ner andengagingthe end of said drum *t'o'pen nnt rotation of the drum in only one; direction, 's'a'id mean's being movable out of en- I In Witness that-I olai'm the for'egoirigiI ha'tehereunto subscribed my nameithis 18th da of Au-gust, 1924.

I LESSIOK,

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