US1314135A - falker - Google Patents

Description

H. W. FALKER.

GYRATORY SCREENING DEVICE.

APPLICATION men Mn. IE. ma.

1,314,135. I PatentedAug. 26,1919.

3 SHEETS-SHEET l.

R. W. FALKER.

GYRATUHY SCREENING DEVICE.

HFLICATION FILED IIAR. 16. 1918.

1,3144 35. v Patented Aug. 26,1919.

3 SHiETS-SHEET 2.

2 LL mf H. w. FALKER.

GYRATORY SCREEMNG DEVICE.

APPLICATlON FILED Inn-1s. IQIH.

1 ,3 14, 1 35 Patented Aug. 26, 1919.

3 SHFETS-SHEET 3.

avweutoz HENRY WILLIAM FALKER, 0F ASHLAND, PENNSYLVANIA.

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Specification of Letters Patent.

Patented Aug. 26, 1919.

Application filed March 16, 1918. Serial No. 222,818.

To all whom it may concem Be it known that I, HENRY W. FALKER, a citizen of the United States, residing at Ashland, in the count of Schuylkill and State of Pennsylvania, ave invented certain new and useful Improvements in G ratpry Screening Devices, of which the fo lowing is a specification.

One object of my invention is to prov de a gyratoryscreenin device which will quiolzly screen and there y grade coal or the like into various sizes and to so construct my invention that it will be durable and easily operated.

Another object is to so construct my invention that a number of superimposed screens can be provided in a single machine and operated from a single vertical shaft.

These objects, and other advantageous ends which will be described hereinafter, I attain in the following manner, reference bein had to the accompanying drawings in Wlll51- Figurel is a central sectional elevation of my invention,

Fig. 2 is a front elevation of Fig. 1 showin the screen frames in section,

ig. 3 is a sectional plan view taken on the line 3-3 of Fig. 2, and

Figs: 4 and 5 are fragmentary elevations showing a modification in certain of the connecting means forming a part of my invention.

Referring to Figs. 1 to 3, inclusive, of the drawin 1 represents a supportin structure w ich includes two front uprights 2 and 3* and two rear uprights 3 and 4. These uprights are preferabl made of heavy timber and are connecte at points above the ground by longitudinal beams 5 and 6 and transverse beams 7 and 8. The longitudinal beams 5 and 6 sup ort an intermediate transversely extending earn 9. The intermediate transversely extending beam 9 forms a support for two pairs 10 and 11 of poles which are preferably made of wood which is tough and springy. These poles 10 and 11 are preferably secured, at their tops, to the beam 9 by bolts 12 and at their bottoms the pairs of poles are respectivel secured to the rear ends of two screening ames 13 and 14, the frame 14 bein mounted below the frame 13 and preferablg of greater width, as illustrated in Figs. 2 and 3. These frames 13 and 14 slant downwardly from their rear ends to their front ends and are suspended at their forward ends by two pairs 15 and 16 of flat wide boards which are also preferably made of tough springy wood. The top ends of these boards are secured to the transverse beam 7.

The frame 13 includes side pieces 17 and 18 which are spaced apart, the side pieces 17 being positioned above the side pieces 18. In like manner the frame 14 includes side pieces 19 and 20 which are spaced apart, the side pieces 19 being positioned above the side pieces 20.

Screens 21, 22, 23, and 24 extend across the frames and are respectively'secured adjacent the bottoms of the side pieces 17, 18, 19, and 20. In this manner the frame 13 suports the two screens 21 and 22 and the ame 14 supports the screens 23 and 24. The mesh of these screens varies in size, the openings of the screen 21 being larger than the openings in the screen 22, the openings in the screen 22 being larger than the openings in the screen 23, and the openings in the latter mentioned screen being larger than the openings in the screen 24. The purpose of this arrangement of screens will be described hereinafter.

A short vertical shaft 25 is mounted in bearings 26, said bearings bein secured to a supportinfilstructure, as clear y shown in Figure 1. is shaft 25 forms the operatin shaft and, as illustrated, includes a pulley 2 which may be driven from any source of power.

Two eccentrics 28 and 29 are secured to the shaft 25 and operate in eccentric straps 30 and 31 which form a part of arms 32 and 33, respectively. The arm 32 is secured to the rear end of the frame 13 substantially midwa between its sides and the arm 33 is secure in a similar manner to the rear end of the frame 14. Reinforcing members 34 extend forwardly from the eccentric straps to the frames in a divergent manner and serve as braces for the screens.

With the above construction the rotation of the shaft 25 will, through the medium of the eccentrics 28 and 29 and arms 32 and 33, impart a gyratory movement to both the frames 13 and 14, the poles 10 and 11 and the boards 15 and 16 being sufiiciently flexible to permit this gyrating movement. It will thus be understood that if coal, which is to be screened and gpaded, is placed upon the top screen 21, t e movement of the screens will cause the coal to be screened,

that portion of the coal which is small enough to pass through the meshes or openings of the top screen will drop onto the screen 22 and in similar manner the coal which is small enough to pass through the openings of this screen will drop upon the screen 23 and so on to the screen 24.

Furthermore, since the screens and frames are inclined, as illustrated, the screened material can *he easily ta'ken 01f from the front end. Also, by having tihe side pieces of the frames Spaced apart the material within the frames can be readily observed. ,Also, by having the screens of various widths, as Illustrated, all of the material passing from the top frame screens will fall upon the screen 23.

In order to support the various screens at different points'throughodt their length, I provide transverse bottom bars 35 which are secured at their ends to the side pieces of the frames.

By providing the wide boards 15 and 16 I secure a durable suspending structure and if desired instead of having these boards secured directly to the transverse beam 7 they can be provided with a ball-and-socket cdnnection 36, such as shown in Fig. 4, said ball-an'd-soc'ket connection including a bracket 37 which can be secured to the transverse beam 7. In this manner all of the boards 15 and '16 can be connected if desired and in which caise they will have a free rockimgor springing movement due to the action of the eccentrics.

In similar manner the. oles 10 and 11 can 'be secured by a hall-an socket connection 38, as shown in Fig. 5, said connection including a bracket 39 designed for attachment to the intermediate trans-verse beam 9.

While I have described my invention as taking a particular form, it will be understood that the various. arts of my invention may be changed Wit out departing from the spirit thereof, and hence I do not limit myself to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as Tait-1y come within the orthe appended claims.

Having thus described my invention, What I claim asnew and desire to secure by Letters Patent is:

1. A screening device including a screen; comparativel Wide means for suspendin one end of t e screen and yieldable raritically entirely in thedireetion of the ngth of the screen; means for Sue ending the opposite end of the screen, said atte'r means being readily flexible in all horizontal directions; and mea'ns for gymcing said hatter mentioned end portion *o'f the screen, substantially as described.

2. A screening device including a screen; comparatively Wide means for suspending one end of the screen and yieldahle actically entirely in the direction ofthe i ength otf thescreen; means for EH1 ending the opposite end of the screen, said latter means being readily flexible in all horizontal 'directions'; a vertical 'actuatin' shine; and an eccentric secured to said shaift and operatively connected to said latter mentioned end of the screen whereby the latter is gyrated, sirhstantially as described.

In testimony whereof I have signed my name to this specification lihe presence of two subscribing witnesses.

HENRY WILLIAM FALKER.

Witnesses:

J on: Moaansnr, Tues. Frames.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner M manta, Washin ton, 0. 0."

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