US907297A - Mixing-machine. - Google Patents

Description

P. A. SIGKLESTBEL.

MIXING MACHINE.

nruouxon mum Jun: 1,1908.

907,297. Patented Dec.22,1908.

B SHEETS-SHEET 1.

INVENTOR l ATTORNEY F. A. SICKLESTEEL.

MIXING MACHINE.

APPLICATION rum) mm: 1, was.

907,297. Patented Dec. 22, 1908.

WITNESSES: INVENTOR a 47 BY ATTORNEY FRANK A. SICKLESTEEL, OF NORTH BRANCH, MICHIGAN.

MIXING-MACHINE.

Specification of Letters Patent.

Patented Dec. 22, 1908.

Application filed June 1, 1908. Serial No. 436,082.

To all whom it may concern:

Be it known that I, FRANK A. SICKLE- STEEL, a citizen of the United States, residing at North Branch, in the county of Lapeer and State of Michigan, have invented cer tain new and useful Improvements in Mixing-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to mixing machines and more particularly to the class of machines designed for mixing concrete and similar substances, the concrete being composed of any suitable binding agent and aggregates commingled with or without water.

In the present instance, I have shown my invention as applied to a machine for mixing cement and sand or gravel to form concrete.

One object of my invention is to provide a mixer capable of imparting a better grinding and mixing action to the material and in addition thereto obviate the sharp corners of a cubical mixer which fill with cement and must be cleaned out from time to time.

Another-object is to provide a mixer of the same capacity as mixers of other designs, which will require less power to operate because the load is nearer the axis of the re volving mixing rece tacle because the diameter of the mixer is ess than those of similar mixers of this class.

Still another object is the provision of a rigid mixing receptacle possessing great strength thereby enabling me to manufacture mixers of the same size and capacity as those of other designs at less expense be cause the receptacles can be made of lighter material and yet afford the same strength.

A further object is the provision of a mixing receptacle of such shape that the material travels over long planes and in a staggering direction, that is from end to end of the receptacle, thereby thoroughly commingling the cement and a gregates.

To these and ot ier ends therefore, my invention consists in certain novel features and combinations such as will be more fully described hereinafter and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view of the mixing receptacle. Fig. 2 is a view in side elevation showing the cube-shaped drum rotatably mounted in a pivotally su I ported rectangular frame. Material is fe into one end of the rotatable drum, the rotation of which commingles the ingredients and after the material is thoroughly mixed, the drum and its frame are tilted to discharge the material. The corners of the cube-shaped mixers collect and retain the mixture which hardcns therein. As a result, the corners must be cleaned out from time to time. In order to avoid this disadvantage cuhiform or other rectangular drums have been devised wherein the corners have been cut off and plates substituted therefor. Others have attempted to avoid the corners by constructing a poly onal shell or middle portion with pyramida end portions. This latter form, however will permit the concrete to collect at the apices of the pyramids.

It is one object of my invention to provide a mixing receptacle of a different conformation from any of the above mentioned forms, wherein the concrete is prevented from collecting at the meeting edges of the sides of the receptacle.

A further advantage is the provision of a device of this character wherein the ingredients will be given a movement dilferent from that imparted by the former mixers, in which the material is merely turned over and over. In my invention the material is not only turned over and over but is also caused to slide back and forth from end to end of the mixing receptacle.

Referring to the drawings, the mixing re ce tacle consists of an irregularly shaped po ygonal drum. The adjacent sides (1), (1), (2), (2), of the drum are longitudinally inclined or itched at op osite angles to eac other, the p anes of whicli intersect, the sides being in shape similar to truncated trian les matched or arran ed oppositely to each ot er so that the base 0 one triangu ar side lies adjacent the truncated apex of the next triangular side. The ends of the drum are substantially pyramidal in sha e and consist of alternate wide and narrow aces (3) and (4) respectively. The wide faces (3) are formed by substantially triangular extensions of the bases of the triangular sides, of which extensions are connected by means of rectangular faces (4) constituting extensions of the truncated ends of the side faces. The apex of one pyramidal end. is cut away to form a mouth or opening to receive the ingredients to be mixed, the apex of the opposite end being similarly cut away to form a discharge for the mixed material. The receiving mouth is preferably larger than the discharge mouth.

Annular bearings (5) and (6) are located near the receiving and discharge mouths of the drum respectively, which bearings rest on anti-friction rolls (7), (7), carried by a rectangular frame (8) surrounding the drum. This frame is pivotally sup )orted interme diate its ends in the standards (9), (9) to permit the drum to be tilted when it is desired to discharge the contents thereof. A ring gear (10) encircles and is secured to the drum, such gear meshing with a spur (11) driven in any suitable manner. This gearing operates to rotate the drum on its longitudinal axis.

The ingredients are fed into the receiving end of the drum which is rotated by means of the gearing to bring the material into contact with the successive sides (1), (1), (23), (2), of the drum. Assumin the drum tobe stationary, the material wili lie in a pocket formed by the angle of a rectangular face 1) the two adjoining triangular faces (3), (3) of one pyramidal end and three of the truncated triangular sides (1), (2), (1) of the drum at the receiving end of the mixer. A partial rotation of the drum will spread the material on the adjoining side (1) of the drum and owing to the incline of such face, the material will be shunted to the opposite end of the drum where it is gathered in a pocket formed by the pyramidal faces and the sides similar to that above described. Another partial rotation will spread the material on one of the sides (2) and shunt it back to the receiving end of the mixer and so on, thoroughly commingling the ingredients. The cause of this alternate shunting of the material from end to end of the drum resides in the fact that the angles (12), (12) formed by the truncated ends of the triangular sides (1), (1), and the rectangular faces 1), (4), are lower than the angles (13) (13) formed by the adjacent sides (2), (2), and the triangular faces (3), (3), the angles (12), (12), being arranged alternately with the angles (13), (13) and at opposite ends of the drum.

Another point of View of the illustrated construction embodying one form of my invention is that of a polygonal drum, the sides of which are each composed of a body portion having a truncated triangular shape, such side being provided at its truncated end with a rectangular extension and at its 0pposite end (the base line of the truncated triangular body portion) with a substanthe side edge 3 tially triangular extension, the body portion and the rectangular and triangular extensions all being arranged at different angles relative to each other and to the longitudinal axis of the drum, the angle of the meeting edges of the triangular extension and body portion being greater than the angle of the meeting edges of the rectangular extension and the truncated end of the body portion, such sides being arranged oppositely or matched relative to each other, as well as being oppositely inclined relative to the longitudinal axis of the drum.

The sharper angles or pockets of the rcceptacle are located at opposite ends of the successive sides alternately so that as the drum rotates, the material is shunted back and forth longitudinally of the drum being alternately spread on the body portion of the sides and shunted to the lower ends or pockets thereof where it is gathered and subsequently spread on the adjacent side as the drum rotates.

The drum may be made as strong as the mixers now in use and yet lighter because of the brace or reinforcement afforded at the juncture of the sides with each other. The sides are riveted together which increases the strength of the drum and reduces the cost of material because a lighter sheet metal can 2'? be employed.

The pockets formed at the truncated ends of the sides owing to the angle of inclination of the sides relative to the rectangular extensions are comparatively shallow and broad and the load is maintained nearer the axis of rotation of the drum. Hence less power is required to rotate the drum.

Having thus fully disclosed my invention what I claim as new is 1. The combination in a mixing machine, of a polygonal receptacle having substantially fiat sides formed of truncated triangular plates arranged so that the narrow end of one plate lies between the wider ends of the two adjacent plates and is inclined oppositely to the inclination of such two adjacent plates, and converging ends, the respective ends having receiving and discharge openings therein.

2. A mixing machine comprising a mixing receptacle supported to rotate upon a tiltin axis, the receptacle consisting of a polygona drum, the body portion of which is composed of a series of truncated triangular sides, the base of the one side lying adjacent to and in substantially the same vertical plane with the truncated a ex of the next adjacent side, the sides eing arranged around the longitudinal axis of the drum and oppositely inclined from end to end relative to each other, the ends secured to the end edges of the body portion and bein substantially pyramidal in shape so that s allow pockets are formed at the alternate ends of ill the successive sides, the yramidal ends'provided with receiving and discharge openlngs respectively.

3. A mixing machine comprising a mixing receptacle supported to rotate upon a tilting axis, the receptacle consisting of a polygonal drum composed of a series of truncated triangular sides, the base of one side lying adjacent the truncated apex of the adjacent side, the adjacent sides being oppositely inclined relative to the longitudinal axis 01 the drum, rectangular extensions projecting from the truncated ends of the sldes, triangular extensions projecting from the opposite ends of the sides, the side edges oi the rectangular extensions being connected to the side edges of the adjacent triangular extensions to form substantially pyramidal ends for thedrum such ends terminating in the receiving and discharge openings respectively, the angle of inclination of the sides relative to the trianular extensions being greater than the angle of inclination of the sides relative to the rectangular extensions to form pockets at the truncated ends of the sides.

4. The combination in a mixing machine, oi a polygonal receptacle having converging ends, the ends each provided with an opening, the portion between the ends comprising a plurality of substantially plane faces extending between the ends and arranged about the axis of the receptacle, the adjacent plane laces being oppositely inclined relative to each other to leave an unobstructed interior. 5. The combination in a mixing machine, of a receptacle having outwardly converging ends, the ends each provided with an opening, the body portion between the ends comprising a plurality of substantially fiat sections extending between and connected to the ends, the sections arranged about the axis of the receptacle and belng alternatel oppositely inclined with respect to each other, the meeting edges of the sections being substantially flush to form unobstructed shallow pockets at angles greater than a right angle.

6. The combination in a mixing machine, of a rece tacle having converging ends, the ends eac 1 provided with an opening, and a body portion comprising a plurality of substantially fiat sections, arranged at angles greater than right angles relative to each other around the axis of the rece tacle to form an unobstructed interior and being al ternately oppositely inclined from end to end, the sections each being in shape like a truncated triangle and arranged in reverse order.

7. The combination in a mixing machine, of a rece tacle having truncated pyramidal ends, eac 1 provided with an opening, and a body portion comprising a plurality of substantially flat sections oppositely inclined relative to each other from end to end and arranged about the axis of the receptacle, the side edges of the sections meeting each other and secured together at oblique an les to form an unobstructed interior, the en edges of the sections merging into the yramidal ends at obli ue angles to form sha low unobstructed poc ets.

8. The combination in a mixin machine, of a receptacle consisting of a p urality of: substantially flat sections constituting the body portion, the sections arranged around the axis of the receptacle in reverse order and being oppositely inclined relative to each other, the op osite ends of the sections being extended an bent at angles less than right angles to form polygonal converging ends having openings therein, the ends composed of alternate wide and narrow sides, the angles at the junctures of the sections with the end forming extensions constitutin shallow pockets arranged in staggered re ation to eacji other around the interior of the receptac e.

In testimony whereof, I have affixed my signature in presence of two witnesses.

FRANK A. SIOKLESTEEL.

Witnesses:

WM. Manon, MARY E. LANGDON.

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