US1760710A - Multiple-control device - Google Patents

Description

May 27,1930. J. J. MITCHELLAk 1,760,710

l MULTIPLE CONTROL DEVI-CE INVENTOR ATTORNEY May 27, 1930. J. J. MITCHELL MULTIPLE CONTROL DEVICE Filed Janfzs. 1929 s sheets-sheet 2 'grae ATTOR NEY J. J. Mrrcl-IELI.-

MULTIPLE CONTROL DEVICE May 27, A1930.

3 Sheets-Sheet `C5 Filed Jan. 2 5, 1929 l' yl m gil l'/ l Y CRP-za lH m la* Null INVENTOR ATTORNEY Patented May 2?, 193@ y UNETE@ STATES PA'EENT @FFQE MULTPLE-CONTROL DEVICE Application led January 25, 1929. Serial No. 335,13?,

rllhis invention relates to multiple control devices, an object being to provide means whereby a. plurality of separate devices or elements may be controlled through the manipulation of a single operating lever, the invention being especially adapted for use in connection with excavating or dredging machines using a bucket of the clam shell type.

For this purpose, the invention provides a control device which isv adapted for many uses, and when used with a machine of the above character, provides means whereby through the operation of a single lever the l5 bucket may be manipulated to raise or lower the same in either a closed or open position.

With the above and other obj ects in view, the invention further includes the following novel features and details of construction, to

be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings Figure 1 is an elevation partly broken away with parts in section illustrating the invention in a neutral position.

Figure 2 is a like view with one of the individual control members moved to an active position.

Figure 3 is a similar view with both of the individual control members in active po` sition. l

Figure et is a like view showing the individual control members in a reverse position from that shown in Figure 1.

Figure 5 is an elevation with both of the individual control members in a position reverse to that shown in Figure 3.

Figures 6, 7 and 8 are sectional views taken respectively on the lines 6 6, 7-7 and 8-8 of Figure 5.

Referring to the drawings in detail wherein like characters of reference denote corresponding parts, the invention which is capable of many uses, will be described in connection with the operation of the bucket of an excavating or dredging machine, the bucket and its mounting however not being illustrated.

The invention comprises a suitable casing which includes spaced plates 10 between which are slidingly mounted individual control members in the form of bars 11 and 12. ylhese bars are guided between rollers 13 and 11i which are positioned between the 5,5

plates 10 and which act to connect the'plates in spaced relation.

The opposite ends of the bar 11 are adapted for connection with a cable or cables 15 whichhave suitable connection with means @0 to open and close la bucket. In other words, movement of the bar 10 in one direction will close the bucket while movement in an opposite direction will open the bucket.

he bar 12y is adapted to have its opposite Q5 ends connected with a cable or cables 16 which lead to suitable elements or devices for hoistingI or lowering the bucket, depending upon the direction of movement of the bar 12.

For the purpose of moving the bars'11 and 12 the invention provides a main control bar 17 which is vmounted for sliding movement between the plates 10 through the medium of rollers 18. These rollers like the rollers 13 7.5 and 14 also act as spacing and connecting means for the plates 10.

` rlhe bar 17 is movable transversely ofthe bars 11 and 12 and these bars 11 and 12 carry spaced rollers 19 which ride upon the 8.0 edges of the bar 17. The bar 17 is offset intermediate its ends so as to provide oppositelyinclined portions 20 and 21 which are connected by a straight portion 22 which is on a line parallel with the direction of movement of thebar 17. The bar 17 is also provided with a notch 23 in one edge adjacent the inclined portion 20.

ln Figure 1 the parts are shown in neutral position, that is, with the bucket open and 9() lowered.

By moving the main control bar 17 in the direction of the arrow shown in Figure 1 of the drawings, one of the rollers 19 of the individual control bar llwill be caused to c ride upward along the inclined portion 2O of the bar 17 to the position shownin Figure 2. 1n this position the bucket will be closed. Movement of the main control bar 17 may be effected by suitable means, such for eX- ico 2 i meomo 11 to enter the notch 23 oi" the bar 17 andY equalize the pull upon the cable or cables 15 so that the bucket Will remain closed. movement of the bar 17 will also cause one of the rollers 19 of the bar .12 to ride upthe inclined portion 2O of the bar 17 so that the bars 11 and 12 will occupy the position shown in Figure 3 lWith the bucket closed and in.

hoisting` position. To stop hoisting movement o1" thebncket the bar 17 is moved in a .reverse direction until the bar 12 returns to neutral position.v While to open the bucket to release its contents the bar 11 is returned to neutral position.

In order to hoist the bucket with the latter in open position thevbar 17 is moved to the position shown in Figure 1- of the drawings.

The rollers 18 are preferably circumferentially curved as shovvn at 27 in Figures 6 and 7 of the drawings. The bars k11 and 12 are formed of spaced members as shown in Figur 8 so as to provide for the passage of the bar 17 therebetween.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserve-d to make such changes as properly fall Within the scope of the appended claims.

Having described the invention `what i. claimed is:

1. In a multiple control device for excavating machines, spaced parallel slidingljy mounted individuall control bars, one of said bars being adapted to have its opposite ends connected With mea-ns toV open and close the bucket oan excavating inachine, and the other of said bars adapted to have its opposite ends connected with bucket raising and lowering means, a main control bar slidable transversely of and engaging the individual bars, an offset portion included in the main control bar to selectively operate the individual control bars, said oiset portion including an intermediate straight section and reversely inclined sections, and cooperating means between the main control bar and one of the individual control bars to provide an equalizing position 'for the latter.

2. ln a multiple control device for encalvat ing machines, spaced parallel slidingly mounted indivi-dual control bars. one of said bears being adapted to have its opposite ends connected with means to openand close the bucket oi an excavating machine, and the other of said bars adapted to have its opposite ends connected With bucket raising and This lowering means, a main control bar slidable transversebT 'of and engaging the individual bars, means included in the main control bar to selectively operate` the individual control bars, said main control bar having a notch in one edge, and means carried by one of the. individual control bars to engage Within the notch and provide an equalizing position 'for said individual control bar. Y

Intestimony whereof I alieni mv signature.

' Jnssn J. MITCHELL.

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