US 1484519 A
Description (OCR text may contain errors)
c. L. MEISTER SHAKER BAR w iw fiw m 1M QL m flr m Patented Feb. 19, 1924.
CON L. MEISTER, OF WILMINGTON, NORTH CAROLINA.
Application filed May 4,
To all whom it may concern:
Be it known that I, CONRAD L. MEISTER, a citizen of the United States of America, re siding at Wilmington, in the county of New Hanover and State of North Carolina, have invented certain new and useful Improvements in Shaker Bars, of which the following/ is a specification.
fy invention relates to new and useful improvements in shaker bars, that is, bars which are used for the agitation or rocking of grates, and more especially to a shaker bar which is used to operate the grate of a locomotive, although it is to be understood that the present bar may be equally well .used whenever a quickly detachable shaker bar or handle is to be used.
An object of the invention is to provide a shaker bar, and to so bend or twist the upper end of the arm over which thelower end of the shaker bar fits, that the bar may be quickly and easilyapplied, and quickly and easily removed, but will not slip when the pulling or pushing force is applied to the bar.
As is well known to those skilled in the art, the arms that are connected to the rods that lead to the grate, protrude above the cab floor of a locomotive from four to six inches, are tapered and are normally in a vertical position, while the shaker bar has its lower end formed with a correspond ingly tapered socket so that the bar may be slipped down over the projecting arm and the bar then operatedin a forward and rearward direction.
Oftentimes, when the shaker bar is pulled towards the operator, the angle of the shaker bar changing from its vertical position, slips OK the arm, causing the operator to fall or stumble backwardly and, in a like manner, when the bar is pushed forwardly, the shaker bar slips upwardly and the operator often falls against theboiler or the projecting instruments thereon, bruising his handsland arms, or causing other injury.
I am aware that certain forms of catches, links and cotter pins are, at times, provided to securely v fasten the shaker bar to the arm,
but the operators, or firemen will not take the time or bother to safely secure the shaker bar in position, with the result that the bars are simply used as those of the ordinary form are used, and the operators are injured as above described.
One of the principal objects, therefore,
1923. Serial No. 636,602.
of the present invention, is to provide a shaker bar, wherein simply the placing of the bar in position, practically locks the bar to the arm so it cannot slip, and in fact to remove it, it will have to be turned and simultaneously lifted.
With these and other objects in view, the invention consists in certain new and novel arrangements and combination of parts as will hereinafter be more fully described and pointed out in the claims.
Referring now to the drawings showing a preferred and modified form of the invention,
Fig. 1 is a fragmentary side elevation showing a portion of a fire box of a locomotive, together with the rocker arms which are used for shaking the grate, the upper portion of the arms being bent and the shaker bar applied to one of them.
Fig. 2 is a fragmentary front elevation of the rocker arms, also showing the shaker bar in position.
Fig. 3 is an enlarged fragmentary secigional view of the lower portion of the shaker Fig. 4 is a similar view, but showing the socket of the bar adapted to receive either a right or left hand bent arm.
Fig. 5 is an enlarged sectional view showing a modified form ofsocket at the lower end of a shaker bar, and
Fig. 6 is a top plan view showing the way in which the'rooking arms for shaking the grate mechanism are bent when the form of shaker bar is used as shown in Fig. 5.
Referring more in detail to the drawings, there is shown the front plate 1 to which a bracket 2 is secured, in which there is the shaft 3 on which is mounted the rocker arms 4 having their lower ends connected to the rods 5 leading to the grates. The upper endse': of these bars are bent either to the left or to the right, the direction of the bend depending upon the location of the re spective rocker bars. As is well known it is common practice to have these arms slight- 1y protrude above the cab floor in a vertical position for the reception of the socket of a shaker bar, while in the present instance, as will be noticed, they are bent at an angle to their sides, sothat the shaker bar will have to be moved laterally with respect to these arms when the same is placed in po sition, as will shortly be more fully de scribed.
The shaker bar 6 may be bent slightly for wardly or -rearward1y as at 7 depending upon the type of the engine and the mounting of the arms 4, but this bend formsno- 9 awhich extends relatively transversely of the shank of the bar and is inclinedto form the 'eurved passa-geway 10, which in this instance,-may be-said to extend in a left hand direction. It will also be understoodthat when the shaker bar is-to be used with grates-other than installed in a locomotive, it'maybe that a bar "witha socket inclined to the right might be preferable.
In Fig. at whichie a modified form there is also shown on an enlarged scale, the lower portion of the shaker bar 6, and in this instance, thesocket is somewhat similar in shape to an arrowhead, having the central passagewayll into which mergesthe right hand inclined curved passageway 12," and the left hand inclined passageway 13, so that it maybe equally as well applied to a bar which isbent in a left hand direction or to a bar which is bent at its-upper por tion' in a right hand direction; in other gvords, doing away with the necessity of two ars.
It willbe clearly seen that to applythis bar to arocker arm, that is,-a bar having either a left hand passageway, or a right hand passageway or a bar'having the combined passageways it willbe necessary to move the bar laterally with respect to the rocker arm and also slide the samedownwardlyyand itwill also be seen that after the shaker bar is once in position,- a forward and rearward shaking movement cannot dislodge the shaker bar from its position;
thus assuring safety to the operator. To remove the shaker bar, it will be necessary to slide the bar upwardly and at the same time to move it eitherin a right or left hand direction.
Referring now to the modified forms as shown in Figs; 5 and 6; 111 time instance, the rocker arm 14 at 1ts upper end will be-tw1st-- ed from-its upper edge-and opposite sides downwardly a distance of four or five 1nches, so that two substantially spiral pas-- sageways 15 and 16 are formed (Fig. 6). In
Figure 5 there is shown-a socket 19 which ward'movement of the shaker bar cannot possibly dislodge the same. 7
A relatively great force is necessary to 0perate the shaker bar and the operator always has to grip the handle of the bar tightly which will thus prevent the bar from twisting in his hands. To remove the bar from its position it'willbe necessary to lift up on the bar and at the same time strongly twist the same.
Thus,- it will be seen that. my invention contemplates either bending the upper portion of the rocker bar either. tothe left or to the right, or one arm to the left a1idone arm to the right, and using a shaker bar having a single or divergingcurved passageway so. that the bar has to be applied atan angle to normal in forward and rearward directions of motion of theshaker bar. In the modified form, the socket of the shaker armis spirally twisted to formtwo separate passageways, and the rocker arm. is likewise twisted at its upper end so that a twisting movement of the bars is necessary to apply the-same. In both instances, therefore, a movement other than a forward and rearward one is necessary both to apply and remove the shaker bar.
There is anadvantage in'both formsas may bereadily understood and in some instances one. formhwill be better than the other, depending nsomewhaton the clearances between the rocker :armsand other factors that may be incident to the rocker arms and the style of: locomotive with which the bar is to be used.
Having thus; described my invention, what I claim as new and desire to secure by'Let-a ters Patent. is V V 1. In combinationwith a rocker arm having a curved locking surface, ashaker bar provided with a head having a passageway adapted to receive the curved surface of the arm and provided with a curved locking surface adapted to coact with the first mentioned locking. surface to hold the bar in position upon the arm, the bar. being .sepa' rable fronr the arm bysimultaneous lifting and turning movements only.
2. In combination witha rocker arm having a curved locking surface, a shaker bar provided with a curved passageway adapted to receivesaid curved locking surface the bar being separable fronr the arm by simultaneous lifting and turning :movements only.
3. In combination with a rocker arm having a curved locking surface, ashaker. bar
to receive said curvedlocki-ng surface; the passageway being inclinediacross the axis. of the banthe bar beingsseparable from the arm by simultaneous lifting and turning movements only.
4:. A shaker bar having an enlarged lower provided with a curved passageway adapted end provided with 'two passageways inclined from the vertical and extending transversely to the longitudinal axis of the shaker bar.
5. In combination with an arm having a part of its upper portion angularly disposed with relation to its sides, a shaker bar having an enlarged lower end, the said end being provided with a passageway inclined from the vertical and angularly disposed with relation to the sides of the shaker bar to thereby fit over the upper end of said arm so that a lateral movement of the bar is necessary to apply or remove the bar from the said arm.
6. In combination with an arm having a part of its upper portion angularly disposed with relation to its sides, a shaker bar, the end of which is provided with two diverging passageways inclined from the vertical and also angularly disposed with relation to its sides, and either of said passageways adapted to receive the upper end of said arm so that when said shaker bar is in position, a forward and rearward movement of said bar cannot force the bar from its arm.
7. In combination with an arm having a part of its upper portion angularly disposed with relation to its sides, a shaker bar, the end of which is provided with two diverging passageways inclined from the vertical and angularly disposed with relation to the sides of the shaker bar and either of said passageways adapted to enclose the upper end of said arm so that a lateral movement of the baris necessary to place the same on said arm.
8. A shaker bar having an enlarged head at its lower end, said head being provided with a central passageway leading in from the end thereof and also provided with passageways opening at the opposite sides of said head and merging with said central passageway.
In testimony whereof I afiix my signature.
CONRAD L. MEISTER.