US1309671A - Concrete mixing - Google Patents

Description

C. R. WEAVER.

CONCRETE MIXING AND DELIVERING APPARATUS.

APPLICATION FILED NOV. 27, 1912.

1,309,67 1 Patented July 15, 1919.

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CHARLES R. WEAVER, OF NEW YORK, Y., ASSIGNOR, TO PNEUMATIC CONCRETE MACHINERY COMPANY, OF NEW YORK, N. Y., A CORPORATION OF JERSEY.

CONCRETE MIXING AND DELIVERING APPARATUS.

To all whom it may concern:

Be it known that I, CHARLES R. WEAVER,

a citizen of the United States, and resident of New York, in the county of New York N and State of New York, have invented new and useful Improvements in Concrete Mixing and Delivering Apparatus, of which the following is a specification.

mentioned character 'a means whereby con crete, subsequent to its having been mixed in accordance with my invention, may be rap-- idly and effectively transferred to any de sired and remote location.

A further object of the invention is to provide in an apparatus of the above mentioned character a means whereby the concrete will be so mixed and deposited prior to the trans-- feral thereof'as to eliminate to the highest possible degree what is commonly known .as clogging of the concrete in its course of travel toward the desired location at which it is designed to be deposited.

Another object of the invention is to prointhe operation of the same will be so re lated to the next succeeding step 'as to ob tain a more nearly perfect mixing and delivering of concrete than has heretofore been A possible.

'A further object of the invention is to provide' an apparatus of the above mentioned character which is strong, durable, simple in construction, reliable in operation, and

' cheap to manufacture.

Other objects and advantages of the apparatus will be apparent during the course of the following description.

In the accompanying drawings. forming'a part of this specification and in-which like numerals are employed to designate like parts throughout the same,

Figure 1- is a side view of an apparatus embodying my invention, the same being shown partly in section and partly in elevation,

Fig. 2 is a detail view of a valve lock,

Fi 3 is a vertical sectional view taken on I the line 3-3 of Fig. 1, and,

' Fig. 4 is a longitudinalsectional view of a portion of a discharge plpe,

Application ma November 27, 1917. Serial No. 204,239.

In the drawings, wherein for. the purpose my invention the numeral 10' indicates a sultable support, carrying thereon a hopper 11, having a converging wall indicated by r the numeral 12. This hopper is provided at -the lower end thereof with an opening of illustration is shown a preferred form of adapted to be closed by a slide valve 13, pro-, VldBCl at one end thereof with a handle 14 and pivotally connected to the hopper 11' by means-of a bolt 15 .or the'like passed therethrough. and engaging a reinforcing portion 16, carried by the hopper. The end of the valve-13, opposite that which carries the handle 14, is provided with asubstantially U-shaped projection 17, the upper arm ofwhich is adapted to engage a cam member 18, carried by the hopper 11 as is clearly shown in Fig. 2. By employing this,par. tlcular cam-face lug I am enabled 'to obtam, as will be readily understood, a sim- -ple,- effective, and water tight closure for the hopper 11.: I wish-to emphasize here the fact that the walls '12 of the'hopper'll are disposed at an angle of approximately 47 to a plane. passed horizontally therethrough. From experience I "have found that when stone, cement and sand are deposited within the hopper 11- in the order named as will hereinafter be referred to more particularly these materials pile up within the hopper 11 in a cone shaped pile in such a manner as to bring the outer surface ofthe pile at right' angles to the wall 12. p I

A second hopper 19, identical with that indicated by the numeral 11 and hereinbefore described, is disposed directly beneath .the hopper 11. In this particular disclosure I have shown the hopper 19 as being suspended by means of chains 20, or the like,

having connection with ears 21 and 22 carried by thehoppers 19 and 11 respectively.

I desire to construct this hopper 19 identical with that indicated by. the numeral 11 for the reason above pointed out, namely, when the stone, cement and sand are released from the hopper 11 as will hereinafter be described and deposited within the hopper 19, that the materials will pile up within the hopper 19 in a cone shaped pile in such a manner a's to bring the sur ace of the pile' at'a right-angle to the wall of this hopper. It might be well for me to State here, due to' the fact that the material is piled up in such a manner as to bring the surface of the pile at right-angles to the walls of the hoppers and due to the fact that the walls of the hoppers are disposed at an angle of approximately 47to a plane passed horizontally through the hoppers, the material will be fed always from the top of the pile when it is being released from one hopper into the other. As a result of th s, the material at the top of the pile, within the hopper 11, will tend to place itself at the bottom of the pile when the same is deposited into the next succeeding hopper and likewise the material which was originally at the bottom of the pile within the hopper 11 will tend to place itself upon the top of the pile within the next succeeding hopper. Thus it is apparent that an agitating or churning effect is produced in the passing of the material from one hopper to the other. This peculiar agitating or churning effect is made possible because the walls of the hoppers are disposed at an angle of 47 with respect to a plane passed horizontally through the lower portion of the hopper. Should the walls of either hopper be disposed t an angle of greatly more than 47 with respect to a plane passed through the lower portion of a hopper the material would tend to feed always 'from p the bottom and the interior of the pile.

Should the walls of the hoppers be disposed at an angle of greatly less than 47 with respect to a plane passed horizontally through the hoppers the material would pass sluggishly from one hopper into the next succeeding hopper and the desired agitating or churning effect wouldnot be produced.

Directly beneath the hopper 19 there is disposed a discharge receptacle, indicated as a whole by the numeral 23, which comprises a main body portion dividedinto a lower section 24 and an upper section 25. The lower section 24 comprises a metallic shell 26 the wall of which forms with a horizontal plane passed therethrough an angle of approximately 47. This shell is provided at its upper edge thereof with a vertical flange 27, adapted to receive therein a similar flange 28 carried by the upper section 25. This upper section comprises a metallic shell 27, of substantially a conical formation, and is provided at its upper end with a dome 28 having an opening arranged therein as shown at 29. Within the opening '29 there is arranged a collector 30, the lower end of which extends an appreciable distance intothe dome 28. This collector has its wall so constructed as to form with a plane passed horizontally therethrough an angle of approximately 47 and is provided at the lower edge thereof with a suitable gasket 31, adapted to c0-act with a swinging valve 32, pivoted within the dome 28, as

.substantially equal to its largest diameter shown at 33, to form an air tight jointure between the interior and exterior of the receptacle 23 when the same is moved to the full line position clearly shown in Fig. 3.

In practice I have found that by inserting the collector 30 into the receptacle 23 an appreciable distance and by so constructing the two sections 24 and 25 as to produce a discharge receptacle in height I am enabled to bring the lower end of the collector 30 closer to the bottom of the discharge receptacle and at the same time produce a receptacle having the largest possible capacityper unit of metal consumed. Another advantage in bringing the lower end of the collector 30 as close as possible to the lower end of the discharge receptacle lies in the fact that when the concrete is deposited into the receptacle it does not fall with sufficient forceto splash but on the other hand it is gently deposited within the receptacle 23 in such a manner as to pile up in a cone shaped pile, the surface of the cone being disposed at right angles to the wall 26 of the lower section 24. I find also that by suspending the hopper 19 so as to bring the lower end of the same as shown, as close as possible to the collector 30 that the concrete when discharged from the receptacle 19 into the collector 30 gently falls into the collector 30 and the collector 30 sufliciently impedes the momentum of the concrete to allow the same to be gently discharged from the collector 30 into the receptacle 23.

The lower section 24, of the receptacle 23, is provided with an opening 34 around which is arranged a nipple 35 provided with an annular flange 36, having connection with a similar flange 37, carried by a suitable discharge pipe 38, which discharge ipe is designed to convey concrete, or the ike, from the interior of the receptacle 23 to a desired and remote location as will hereinafter be described when considering the operation of the device as a whole.

A fluid pressure pipe 39, having communication with a'suitable pressure supply, preferably compressed air, not shown, is connected with the dome 28 by any suitable means as shown at 40 and is adapted to transmit fluid pressure from a source of supply to the interior of the receptacle 23, the flow of the fluid pressure being regulated by a suitable valve 41 carried by the pipe 39. To the pipe 39 and at a suitable point thereon there is connected a second pipe 42 which in turn is connected to a third pipe 43 entering the discharge pipe 38, as shown at 4-4. The pipes 42 and 4.3 are adept ed to inject fluid pressure from the pipe line 39 into the discharge pipe 38 in the direction of travel of concrete therethrough as will hereinafter be described. This discharge pipe 38 is provided at the end thereof with a discharge opening 44, in proximity to which is disposed a suitable abutment 45, having a beveled face 46 carried thereby and arranged adjacently to the opening 44 as shown. In order to retain the abutment or block 45 within the end of the discharge pipe 38 there is provided a screw thread cap v 47, havin screw thread engagement with the end 0 the discharge pipe 38, as shown at 48. y

In use the operation of the device is as follows:

Suitable quantities of stone, cement and sand are deposited within the hopper 11,

one upon the other in the order named. A suflicient amount of water is then deposited within the hopper. The valve 13 is then opened by means of the lever 14, whereupon the contents of the hopper 11 is spilled or allowed to flow therefrom into the hopper 19. During the transferal of the contents from thehopper 11 to the hopper 19 the same is-thoroughly agitated and mixed to form concrete. Upon the completion of the above described transferal the valve 13 carried by the hopper 19 is then opened whereupon the contents" of the hopper 19 is deposited into the collector and direct into the discharge receptacle 23. Fluid pressure is then admitted through the pipe line 39 into the dome 28, whereupon the i valve 32 ismoved from the dotted line position to the full lineposition, shown in Fig. 3, as a result of the impact thereupon of the fluid pressure escaping from the pipe line 39. As the fluid pressure builds up within the discharge receptacle 23 the contents therein begin to move outwardly through the opening 34 and into the discharge pipe 38. The valve carried by the pipe 42 is then opened, whereupon fluid pressure is injected through the pipes 42 and 43 into the discharge pipe 38 in the direction of travel of the concrete therethrough. This injection of fluid pressure into the discharge pipe 38 at this particular a point not onlyv serves to agitate the concrete at' this point of discharge from the receptacle23 but also serves to accelerate the same in its course of travel through the discharge pipe 38. It is obvious that the concrete upon reaching the point at which the same is desired to be deposited will be discharged from the discharge pipe 38 through the opening 44 provided therein,

a and that the beveled face 46 of the block or abutment will serve to deflect the concrete in its course of travel into and through the opening as described.

It is to be understood that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of my invention or the scope of the subjoined claim Having thus ,described my invention, what I claim as new and desire to'secure and protect by Letters Patent of the United States, is:

In a concrete mixing and delivering apparatus, a plurality of independent substane tially duplicate conical mixing and conveying receptacles spaced apart and axially alined one above the other, atop closure for the bottom one of said receptacles, and fluid pressure means for mixin material within the lower of said recepta ing the mixed material therefrom.

CHARLES R. WEAVER.

es and discharg-

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