US946699A - Drying and mixing device. - Google Patents

Description

H- M. KINGSLEY.

DRYING AND MIXING DEVICE. v APPLIGATIQN FILED JUNE 29,1908.

Patented Jan. 18,1910.

2 SHEETS-SHEET 1.

I awake H. M; KINGSLEY.

DRYING AND MIXING DEVICE.

APPLICATION FILED mm". 29,1908.

Patented Jan. 18, 1910.

2 SHEETS-SHEET (J m m M 1., v 5 M 3 I. fziy has new "his as FFiQ HENRY M. KINGSLEY, OF WASHINGTON, DISTRICT OF COLUMBIA.

DRYING AND MIXING- :onvros.

Application filed June 29 1908. v Serial ltlo eflfim.

To all wi om it may concern:

Be it known thatI, HENRY h/L KINGSLEY, citizen of the "United States, residing at Washington, in the Dist-rictof Columbia,

have inventedcertain new and useful'lmprovements in Drying andMixing Devices, of which the following is a specification.

The presentlnvention relates .to a novel -mechanismj fort-he manufacture. of plastic 1; compounds of'that type in-Which it is de sired to thoroughly, dry the aggregate before adding the binder-or cement and in which thebinder must be softened-and made plastic qwhile mim'ng loythe: application Oiheat;

" The object of the'invention is the provision of a' device of this character which will" enable the various ingredients to be discharged into the-mixing drum in the required proportions and which will operate 111 an efiective mannerfto produce'a rapid I and uniform mix ng ofthe said ngredients.

' For a full understand n 'foi the invention and the merits thereof andalso to acquire a knowledge ofthe details of construction and the means tor efiecting the result, reference isito' be had'to the following deseription and accompanying drawings, in which:

Figure '1 is a side elVatiohpf the pre ferred embodiment of the; mixing machine, portions being shown insection. Fig. 2-is' a' vertical transverse sectional :view. throughthe same. Fig.3 is anend view. -Fig. 4

is an enlarged transverse sectional view" through iaportion' of one of. the'inixing drums. Fig. 5 is a planview-showing -a form of atruck 1 so as to be readily trans-5' ported from place touplace although itis entirely obvious that should it be found desirable the plantcould be mounted upon a' stationary base. I v y As shown in Fig. 1 a mixing drum 21s mounted upon each end of the truck, the.

,upon the truck below the frame 12 is mixingdrums having a substantially cylindrical formation and resting upon the roll ers3 so as'to be turned about their longitudinal axes with a comparatively small amount of friction. These rollers 3 are carried by the shafts 4 i'vhichare iournaled Within suitable bearings projecting upwardly from the truck. For the purpose of' preventing longitudinal displacement of the mixing drums they are provided upon their exterior with "the annular rails .5 which engage the.

rollers The tvvo mixing drums receive motion from a shatt 6 which is journaled. .Withinbearings 7 projecting. downwardlyfrpni the 'truck, the shaft being provided with 'a drive Wheei 8 designed to receive power from any suitable -source, and 'also with the pulleys 9 engaging the bands 10 which passaround the mixing drums and are received within the grooved ribs. 11 thereon. Mounted upon the truck 1 between the two mixing drums is a frame. 12 which supports the hopper 13 from which the mat'erials tojhe mixed are discharged into the drums. This hopperdischar es-into the intenor ct the respective diums through. spouts 15 and these spouts'lead to openingsin the ends of the drums and are provided With valves 216 which enabie therequired Specification of Letters Eatent. Patented Jail. 18, 191i);

amount of material to be measured in the hoppers and-subsequently discharged into the ru ns by opening the valves .v Arran eda illinacc 17 which may he cit any suitable type and may employ any desired fuel, either.

liquid or solid. In the present instance the furnace is provided with a crude oil burner- 18 and the heated airenters the mixing drumsthrou'gh passages 19 leading to the openings in the endsot the 'drum' and'.di$- posedunder-the; spouts 15 of the hoppers.

It will thus be obvious that as the material is discharged into. the drum from the "hop- .pers it will be droppedthrough a current of heated air.

' More specifically describing'the fm'ixing drums it"will heobservedrfrom an inspection of Fig. 5' that theyfare specially constructed .so as to retain theheat producedby he furnaceand comprise an outei'shell 2 o1', metal which is separated from theinr i.ei-.--'shellx2 of metal by a layer. 2fof' fasbestos or similar non-heat conducting material. The interior of each of the drums is also provided with a number of inwardly projecting blades which are arranged at an angle to the longitudinal axisjof the drum. in groups, the blades 20 of one set of groups being inclined in onedirection while the blades 20 of the opposite set of groups are inclined in an opposite direction. These va-' rious groups are arranged alternately with respect to each other and as the drum is revolved tend to cause the ingredients to move toward opposite ends of the drum. It will thus be obvious'that during the mixing op eration the blades 20' and 20 projecting within the drum serve the double function of elevating the ingredients within the drum and dropping them through the heated current of air produced by the furnace and also of moving the ingredients toward opposite ends of the drum as they are acted upon by the successive groups of blades. It may also be mentioned that the end portions of the blades are extended outwardly at 20 to the openings in the opposite ends of the drum, the material being received through one of the openings and discharged through the opposite opening.

For the purpose of discharging the ingredients after they have been thoroughly mixed a chute 21 is provided and this chute is suspended at an intermediate point in its length b means of hangers 22 which are connecte arm 24 projecting laterally from the upper end of a post 25 which is mounted to revolve about a vertical axis. YVhen it is desired to discharge the ingredients from the drum one end of the chute 21 is inserted through'the opening in the drum so that as the latter is revolved theblades will elevate the material and drop it upon the chute, the chute being held in an inclined position so that the material deposited thereon may be discharged into a wagon or other suitable receptacle provided for that purpose. After the contents of the drum have been removed the chute 2,1 is withdrawn therefrom and the post 25 and cross bar 23 are turned so that the chute will hang in an out-of-the-' way position.

In the operation of the device the material is placed in the hopper 13' and after bein measured therein is permitted to enter the drums. As thedrums are revolved the'aggregate, is successively elevated and dropped'through the current of heated air produced by the furnace until thoroughly dried. The binder which may be of a bituheat and thoroughly mixed with the aggre-' gate. It. will thus be obvious that with the present construction the heat is utilized both These blades are disposed Y to a cross bar 23 carried by an;

- spouts.

for drying the aggregate and for softening the binder so as to retain the same in a soft and plastic condition during the mixing op eration.

A slight modification of the invention is tion of the interior of the drums,

nor the manner of discharging tl'iercixing drums, for the reason that this suh ect ter has been divided out of the pi and constitutes the basis for a co-penaing visional application.

Having thus described the invention, what is claimed as new is:

1. In a device of the character described, the combination of a support, a pair of mix ing drums mounted upon the support to retate about a horizontal axis, the said mixing drums being formed with end openings, a frame project-ing upwardly from the support between the mixing drums, ahopper mounted upon the frame and formed with spouts adapted to discharge into either of the ,mixing drums through the end openings thereof, a furnace mounted under the frame apd adapted to cause heated air to enter the niixing drums through the end openings thereof, and means for rotating the mixing drums.

2. In a mixing apparatus, the combination with a wheeled support, of a pair of drums mounted upon the opposite ends of the support in spaced relation to each other, said drums both having a feed opening through their inner ends and outiet openmutually rotating said drums, a hopper dis- .posed between 4 said drums and having spouts entering the feed openings of both drums, and a furnace located beneath the hopper and heating the same and having opposed fiues leading tothe feed openings of both drums and located beneath said.

3. A mixing apparatus comprising a wheeled frame, opposed drums rotatabiy mounted upon the wheeled frame, the inner ends of" the drums being toward the middle of the frame, each drum having an inner feed opening and an outer discharge opening, a longitudinal power shaft on the wheeled frame, gearings whereby the drums may be rotated from the power shaft, a hopmaterial contained in the hop er into either per mounted between the drums anal having one or both of the spouts; as gesireti. 10

oppbsed spouts extending into. the feed In testimony whereof 1 afix my signature openings of the opposed drums, a, furnace in presence of two witnesses;

5 located beneath the hopper to heat thesame HENRY M. KINGSLEY. [L. 8:]

and between the drums endLhav'ing ducts Witnesses: leadingto the feed openings of the drums JAMS SYKEs',

beneath. seid spouts, and means for directing THOS- B. Gkrenmes.

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