US1041523A - Sand-drier. - Google Patents

Description

T. SMITH.

SAND DRIER. APPLICATION FILED JUNBa, 1912.

Patented Oct. 15, 1912.

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4and a heat deiector; and

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TEEZQMAS SMEITL'L 0i? EQRTSMOUTH, YRGINIA.

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. Other objects, as well as the nature, char acteristic features, and'scope of the invention will more readily be understood from the ollowingdescription taken in connection with theI accompanying drawing, forma part hereof, wherein,

lFigure 1, is a central vertical section of a sand drier embodying'my invention. Figs.

2v and 3, are sectional details, the one showing the cleaning doors, and the other showing the angle irons or distance pieces which sustain'the outer wall of the sand basket.

Referring to the drawing, a, represents a suitable heater; b, represents a superstructure linvolving a wet sand basket or holder c, 'represents a stack. The heater 4or furnace a, is equipped with a suitable grate 1, an ash pit 2, and with fuel and ash doors 3, and li. That part of the furnace casing forming the hot air chamber' is somewhat ilaring and has mounted upon 'it aring or annulus 5, that supports in turn the heat deiiector, sand/basket or holder, and outer shell or casing di Said shell or casing 6, is an imperforate member and is equipped near Aitsba'se with \verti cally sliding doors 7; which aiiord ready access for'cleaning purposes, and. at its top witha door 8, through which the'wety sand is introduced. A cable 9. made fastto' door 8, and running over pulleys 10, aiiords a convenient means of raising andflowgering said door. l rllhe basket or holder i'or the wet sand is constituted of two screens 11, and 12, whereof the outer screen 12, is supported by l bridges 13, on the ring 5,`and by angle irons let, which constitute distance pieces for holding 'the screen and shell apart, and u.torni a passage 15, intermediate the two for hot air, which eventually finds its way into` the stack through orifices 18. This is mani- Specification of Letters Patent.

.applicati-cn 126.' June S, B952; Serial No. 701,345.

sand driers ofl Patented Oct. 15,1912.

iestly advantageous, in that the wet sand is kept out of contact with the shell, thus prolonging the life of the latter, and, also, in

that a quicker drying is e'ected through the greatly increased drying area. The inner or bottom screen 11, extends from the ring or' annulus 5, to a sleeve 17, which telescopes the stack. The stack is provided with a bolt or pin 18, and the sleeve 17, has a slot 18', so that in the event of repairs the sleeve may-be elevated and maintained in raised position by causing the bolt 18, to engage the slot 18. .The stack is sustained by a guide 19, and its downward movement is limited by a collar 20.

The described arrangement of the inner wall or screen of the basket provides an damper 26, that can be operated from the outside by a damper rod 27. Below the de-'ff' lector and the flues or passages 25, is a sand catcher'or receptacle 28, supported as at 29, and provided with a discharge chute 80, leading out of the furnace.

It will be obvious to those skilled` in the artto which the invention relates that nrodications may be made in details without .axial flue or passage 21, that connects the I departing Jfrom the spirit and scope df the invention. Hence the same is not limited other than required by the prior state of the' art.

Having described the nature andl'objects of the invention, what I claim and desire to secure by Letters Patent is 1. rlhe combination of a heater, its stack,

a sand basket, having an axial space or passage connecting the heater and stack,

, and a shell or casing inclosing the basket and forming a surrounding hot air passage. 2. The combination of a heater, its stack, a perforate sand baskethaving .an Aaxial space or passage that connects the heater and stack, and an imperforate shell or casing inclosing the basket and forming therewith a 'surrounding hot air passage: 3. The combination of a heater, its stack, a perforate sand basket having an axial'

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