US1620575A - Vibratory screen - Google Patents

Description

W. F. SCHADEL Mmfh 8. 1927.

VIBRATORY SCREEN 2 Sheets-Sheet 1 Fil'ed May 25, 192e INVENTOR y yz'lliawz'fcadel A'ITRNEYSv March 8,1927. l1,620,575

W. F. SCHADEL VIBRATORY SCREEN Filed May 25, 1926 2 Sheets-Sheet 2 WITNEssEs Patented Mar. 8, 1927.

naar En aras raast-s 2P WENT `lFIIiIJLlE E'SCHJADEL, OF-`CHARI1ESTOZN, WEST VIRG'NA, 'ASSIGNORTO KANA'WHA MANUFAGTURINGCOMTANY,OEE-CHARIESTON, OVEST VIRGINIA, A GORPRATON 0F WEST VILRGENIA.

Application nled Mar '25,

This invention-,relates to gvibratorfy screens and more iparticular-ly .to improved ,means yfor vibrating ia screen, ,anobjectsofthe ,invention being to provide meansiofytbis character which .are adapted for screening any material fwhich may be susceptible. of ,grading hy i screening', such ,as j l coal, gravel, concrete aggregates, sand,grain,setc.

A further object is to provide a mechanism of this character which has relatively few partsand I'in Vyvhichthe working parts are enclosed rendering them substantially dustproof.

A further object is to provide mechanism of the character stated which requires a minimum of sparc-e for installation, which is strong and durable in use, and which most efciently performs the functions for which it is intended.

vWith these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts, which will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings- Figure l is a perspective view, illustrating my improved apparatus;

Figure 2 is a view in transverse section through the apparatus, taken on the line 2- 2 of Figure 3;

Figure 3 is a view in longitudinal section of the apparatus;

Figure 4 is a fragmentary view in transverse section on the line 4--4 of Figure 3.

1 represents the supporting fame of my improved apparatus which supports an inclined chute 2, with a pair of side bars 3 above the chute and preferably of channel iron. Between these side bars 3 a screen 4 is located and is iXedly secured at its ends. To the side bars 3 inwardly projecting strips 5 are secured and overlie the screen so as to prevent the material from falling laterally off of the screen.

My invention has particularly to do with the means for vibrating the screen, and I provide a support for this means which includes a pair of transversely extending bars 6 which may be of angle iron, as shown, and which are secured to the upper edges of the side bars 8. Bearing brackets 7 are also secured to the side bars 3 between the bars 6 and provide rotary mounting for a sha-ft 'IIBRATORY .#SCREEN.

1926. semaine. 111,596;

7 extending ytransversely ,of ythe screen and at the Ddesireddistance above the same.

l8 represents ia housing which has integral webs 9 supportedvupon and secured to :tbc bars 6. rlhe upper portion of this :housing kand housing proper 4constitute an .l enclosure for a-cam 10 iwhich-is keyed -to the shaft 7, and which ,has on j itsY ,outer :ta-ce an annu Alar series .of cam faces, ,as clearly illus* trated. 1

The lower end of the housing 8 is rectanguiar7 as indicated at 11, and is located in alinement with a casing 12, said portion 11 and casing 12 having` annular flanges 15 and 14, respectively, which are secured together in any approved manner. i

The casing 12 has a. central guide sleeve 16 with a bushing 17 therein, and a rod 18 is mounted to slide and reciprocate. freely in said bushing. On the rod 18 within the casing 12 a head or enlargement 19 is provided with a bifurcated bracket 20 constituting a part thereof and supporting a roller 21 which engages the periphery of the cam 10. A coil spring 22 is located in the casing 12 around the sleeve 16 and exerts upward pressure on the head or enlargement 19 holding the roller in contact with the cam 10.

The portion 11 of the housing 8 is angular in cross section. and the bifurcated bearing bracket 20 is also angular in end elevation so as to prevent any tendency of turning movement of the rod 18. This rod 18 projects through the casing- 12, and is screwthreaded.

The screen 4 has secured to its under face a transverse bar 23, and this bar and the screen are perforated to receive the lower end of rod 18. A nut 24 is located on the threaded rod 18 and screwed downwardly against the screen, and anotherl nut 25 is located on the rod and screwed against the bar 23, so that by the adjustment of these nuts the screen is firmly secured to the vibrating mech anism.`

The casing 12 has a depending extension or apron 26 which extends part way around the same and prevents the particles from contact with the rod.

The operation is as follows:

It is of course to be understood that the shaft y7 may be driven from any suitable source of power, and when revolved the cam l() thereon Will impart rapid reciprocating or vibrating motion to the rod 18, which Will be imparted to the screen l so that the material moving over the screen Will be shaken through the mesh of the screen or Will roll down over the screen in accordance with the size of the particles.

Various slight changes and alterations might be made in the general form of the parts described Without departing from my invention and hence I do not limit myself to the precise details set forth but consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of the appended claims.

I claim:

1. An actuating mechanism for Vibratory screens, including a support adapted to be positioned above a screen, a housing lixed to said support, a cam in said housing, means for turning 'the cam, a casing secured to said housing, a rod movable through the casing and adapted to be fixed to the screen, a roller on the rod operated by the cam, a member adapted to be fixed to the lower face of the screen and through which member the said rod projects, and nuts on the rod engaging the member and the screen whereby the screen is firmly secured.

2. An actuating mechanism for vibratory screens, including a support, a housing, Webs on the housing fixed to the support, a shaft projecting through the housing, a cam on the shaft in the housing, a casing secured to the housing, a central bearing sleeve in the casing, a rod movable in said sleeve, a

'bracket on the rod, a roller in the bracket engaging the cam, a spring' in the casing around the sleeve and exerting pressure on the rod in a direction toward the cam, and means adapted to secure said rod to the screen.

WILLIAM F. scHADnL.

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