US499799A - parkinson - Google Patents

Description

2 Sheets-Sheet 1. T. 82; G. M. PARKINSON. DUST COLLECTOR.

(No Model.)

Patented June 20, 1893.

(No Model.) 2 Shets-Sheet 2.

T. a? G. M. PARKINSON. DUST COLLECTOR.

N0.-499,'799. Patentad June 20, 1893.

UNITED STATES PATENT OFFICE.

TOM PARKINSON AND GEORGE MARSDEN PARKINSON, OF DONGASTER,

. ENGLAND.

DUST-COLLECTO R.

SPECIFICATION forming part of Letters Patent No. 499,799, dated June 20, 1893.

Application filed September 27, 1392. Serial No. 447,051. (No model.) Patented in England June 14, 1892, No. 11,187.

To all wh hm it may concern:

Be it known that we, ToM PARKINSON and GEORGE MARsDEN PARKINSON, subjects of the Queen of England, residing at Doncaster, England, have invented certain new and useful Improvements in Dnst-Collectors, (for which we have obtained Letters Patent of Great Britain, No. 11,187, dated June 14, 1892,) of which the following is a specification.

This invention is designed forthe purpose of removing from dust-laden air the impurities or solid matters which it may contain and is particularly applicable to apparatus used in the treatment of grain where an air blast or suction is employed for carrying ofi from the grain the dust and similar light impurities which may be mixed with it.

In the accompanying drawingsz-Figure 1, is a horizontal sectional view taken on the line -00 of Fig. 2. Fig. 2, is a vertical longitudinal sectional elevation taken on the line 3 y-y of Fig. 1. Fig. 8 isa vertical transverse section on the line zz, Figs. 1 and 2. Figs. 4, 5 and 7, are horizontal sectional views taken about centrally of the dust arresting chamber, indicating slight changes in the general arrangement. Fig. 6, is a central vertical section, taken transversely on the line z-z, Fig. 5, the inlet for the air not being shown.

A represents the casing containing and closing in the apparatus into which a current of the air to be treated enters by the passage B either under the influence of a blast or exhaust according to circumstances. If a blast be employed the top of the apparatus may be open as indicated in Fig. 2 but if the apparatus is to work by suction'the top should be sufficiently closed in and connected with an exhaust fan or blower as will be well understood.

The air entering by the channel B passes between the S-shaped-plates 0 preferably of metal which are arranged in vertical rows across the chamber L the course which the air has to travel being indicated by the arrows in Figs. 1 and2. In passing between the plates 0 the air parts with the dust and impurities previously carried with it and these falling .down the channels in the plates leave them I by their bottom edges and pass into thelower portion D of the chamber in the bottom of which is located the worm or otherconveyer E by which the dust is removed from the apparatus and delivered by the outlet F from which it may be taken and dealt with in any required manner. The lower chamber D has tapering sides so as to direct the impurities on to the conveyor and it may be divided up into sections by the boards or partitions G if desired.

The air liberated from almost, if notquite,

thewhole of its impurities in passing by the plates 0 escapes by the passages H to the upper or exit portion I of the apparatus where owing to the provision of the ample space it expandsand should it contain any further dust or impurities it will deposit them upon the platform K which forms the cover of the upper chamber L which contains the plates,

0. The platformK is provided with the walls M by which the materialis retained. In practice however it is found that the airis so thoroughly relieved of its impurities in passing the plates 0 that the platform K is of very little practical utility and that any dust that may fall upon it is of such small quantity that it is almost unnecessary to provide any special means for removing it as it can at intervals be easily brushed off when the apparatus is open. The construction shown,h0wever, is preferred.

The effect of the expansion of the air in the expansion space I may be increased by making the channels H small in proportion to the rest of the apparatus, and this effect may be increased by providing the wings O as shown in Fig. 2 which besides narrowing the channels H act as baffle plates for the air to strike against and still further tend to remove from the air any impurities it may contain. These wings however need not necessarily be employed but are preferred. The upper portions of the walls A as shown in Fig. 2 may with advantage be curved round so as to extend over the edgeof the platform K and thus direct the air well over that platform.

In the modified construction illustrated in Figs. 4, 5 and 6 the same method of operating is followed, but the arrangement of the parts is slightly altered. The dust-laden air enters the chamber L at B where it m eets a baffle plate Figs. 4 and 5 indicates the limit of the cover.

In Fig. 5 the plates 0 instead of being arranged across the path of the dust-laden air are placed parallel thereto and the course of the air is diverted so as to pass between the plates as before. Otherwise the construction is similar to that of Fig. 4, the partitions P and baffle plates N being employed in a similar manner.

In the cross section Fig. 6 the boards or plates Q may be employed if desired to separate the dust deposited by the air before it has passed the plate 0 and after it has so passed and if desired a complete separation of the particles may be carried out by employing two conveyers E one at the bottom as shown and the other at the junction of the plates Q.

The baffle plates N may if necessary be placed near to the entrance P so as to constrict the passage N between the partition P and the baffle plate thus compressing the air and intensifying the eifect of its liberation into the relatively large chamber L. In Fig.

7 this is carried out, the arrangement of the' partitions and baflie plates being the same as in the previous figures, but the plates 0 are omitted and it is therefore desirable to place the baffie plates Very near to the openings in the partitions.

In this specification the plates 0 have been described as being S-shaped and vertical and we prefer to place them vertically, but it will be appreciated that a similar result could be obtained with these plates or plates of other shape such as C-shape somewhat slanted or inclined so long as the falling of the dust was insured.

If it be found that from the nature of the dust it has a tendency to adhere to the plates it can be removed by periodical shaking or knocking or by .brushes if desired.

We claim- 1. In a dust collecting machine the combination of the upper chamber containing vertically arranged plates of substantially an S form in cross section, and an air inlet, air channels at each end of the chamber, and an expansion space above the chamber communicating with said channels, substantially as described.

2. In a dust collecting machine, the combination of two sets or series of vertically arranged curved separated plates with a space between them for the entrance of air, an outer case affording passages for the exit of the air after passing around or through the plates and means for withdrawing the dust or impurities precipitated from the air, substantially as described.

3. In apparatus such as described the combination with a chamber such as L containing one or more sets of curved vertical plates such as O of a lower chamber such as D communi eating with the firstchamberanddivided by partitions corresponding with the rows of plates above and a worm or other conveyer substantially as described.

4. In a dust collecting machineethe combi- I nation of an outer case having inlet for the dust laden air, and a suitable outlet, an upper and lower chamber within said case, rows of curved plates arranged from top to bottom of said upper chamber, and means for conveying off the dust deposited in the lower chamber, substantially as described.

5. In a dust collecting machine the combination of an outer case having inlet for the dust laden air and a suitable-outlet, an upper chamber having from top to bottom thereof a series of curved separated plates forming continuous circuitous channels between them, a lower chamber tapering at the sides, and a conveyer contained within said lower chamber, substantially as described.

6. In a dust collecting machine, the combination of an outer case having air inlet and having its sides contracted or turned partly over at the top to form an outlet for the air, an upper and a lower chamber, a series of curved separated plates in the upper chamber and a conveyer in the said lower chamber, substantially as described.

.7. In a dust collecting machine the combination of an outer casing having an inlet, and a suitable outlet at the top, an upper chamber closed to the said casing in the top and provided at said top with suitable transverse wings, a lower chamber communicating with the upper chamber, curved separated plates arranged in said upper chamber and a conveyer located in said lower chamber, substantially as described.

8. In a dust collecting machine, the combination of an outer case having air inletand provided at its top with suitable outlet, an upper chamber contained within said case, closed at the top and provided with side wings O, escape passages for the air into which said wings project, a lower chamber, curved separate plates arranged in the upper chamber and a conveyer in the lower chamber, sub stantially as described.

9. In a dust collecting machine, the combination of an outer case having suitable inlet and outlet for the air, an upper chamber thereof with rows of curved separated plates,

hands in the presence of the two subscribing partitions having spaces, and battle plates witnesses. arranged before said spaces, which partitions and baffle plates alternate in position Willlljlhe curved plates, a l0wer cha1nber for receiving the dust, and a conveyer in said lower chamber, substantially as described.

In testimony whereof we have hereto set our TOM PARKINSON. GEORGE MARSDEN PARKINSON.

WVitnesses:

W. H. SIMPSON, I. T. ELY.

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