US1762705A - Outrigger for cranes or the like - Google Patents

Description

June 10, 1930. G. A. VAUGHN 1,762,705

OUTRIGGER FOR CRANES OR THE LIKE Filed July 5. 1927 2. Sheets-Sheet l W LII-X y i 24 f6 :mia l .D .yy/11, l,

War/765.5,

June 10, 1930. G. A, VAUGHN I 1,762,705

OUTRIGGER FOR CRANES OR THE LI KE Filed July 5, 1927 2 Sl'leeis--Sheeil 2 Patented June 10, 1930 UNITED STATES PATENT OFFHQE GEORGE A. VAUGHN, OF NEWTON, IOWA, ASSIGNOR TO THE PARSONS COMPANY, OF

' NEWTON, IOWA OUTBIGGER FOR CRANES OR THE LIKE Application filed July 5,

My invention has to do with an Outrigger construction forming part of a crane or similar machine for handling heavy loads.

More particularly, it is my object to provide an Outrigger structure having parts so constructed and arranged as to be conveniently anchored to the rails of a track on which the crane travels for anchoring the crane against tilting, overturning or racking.

' Another purpose is to provide such an equipment by which the supporting derrick or A frame or the like over which the hoisting line is drawn may be directly supported on the rail without imposing the load carried by the A frame iirst on the main frame ofthe crane and then on the rail.

It is my object also to provide in such a device a number of novel features in the construction of mounting of the Outrigger clamps.

With these and other objects in view, my invention consists in the construct-ion, arrangement and combination of the various parts of my Outrigger whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which:

Figure 1 is a side elevation of a crane of the boom hoist type equipped with an out rigger construction embodying my invention. Figure 2 shows a vertical, transverse, sectional view taken on the line 2-2 of Figure l.

Figure 3 is a perspective view of the parts of the Outrigger clamp dissasembled.

Figure 4 is an enlarged view in side elevation of one oi the Outrigger clamps and parts of the crane taken from the opposite side of that shown in Figure l; and

Figure 5 is a detail, sectional view taken on the line 5-5 of Figure 4.

I have found in the designing of cranes for use on railroad tracks that a relatively light weight crane can be used for doing comparatively heavy work if proper means are provided for anchoring the crane on the rails against tilting and for supporting all or part of the loa-d on the rails by the anchoring means employed.

1927. Serial No. 203,311.

In the drawings herewith, I have used the reference character 10 to indicate generally the rails of a trac-k resting on the ties 12.

I have indicated the frame B of a crane, which frame is supported on wheels 14 on the rails 10.

I may say that in the drawings herewith, I have shown the crane structure generally in somewhat diagrammatic form, because it is my intention to show only enough of the crane to illustrate my present invention.

At one end oi the crane, there is supported an A frame A, having the upwardly and forwardly inclined side members 1G supported on the main frame B and connected together by a cross member 18 at their upper ends.

A boom 20 is pivoted on the frame B adj acent to the lower end of the A frame A. The boom 20 is supported in any suitable way for vert-ical, pivotal movement and also for horizontal, swinging movement.

The structure for this mounting is old and in itself forms no part of my present invention.

A cable rigging 22 is provided for connecting the outer end of the boom with the upper end oiI the A frame for supporting the outer end of the boom at different heights.

By this structure, it is obvious, of course, that a part of the load imposed on the boom is imposed on the A frame, which is rigidly braced by the braces 24.

I have in mind particularly that condition oi the crane when the boom is swung to extend laterally as shown for instance in Figures 1 and 2.

For instance, as shown in Figure 2, a substantial part of the load will be imposed upon that member 16 of the A frame on the side ladjacent to the boom 20, whereas the other lmember 16 will tend to be pulled upwardly.

For rigidly anchoring the crane and especially the A frame to carry part of this load on the A frame and also to hold the crane against tilting, I have provided the Outrigger structure, which I shall now more fully de` scribe.

The main frame B has the longitudinal, side members 26, which are ordinarily in the form of channel bars opening inwardly toward each other.

The A frame members 16 are supported on the respective channel bars 26.k

On each side of the machine, a .bracket is employedr comprising the plate 28 having lat the journal 36 received between the journals 82 and pivotally connected therewith by nieansof a pin 38 detachably received inthe journals 32 and 36.

At the lower end of the arm 34am down- Y wardly projecting` spaced arm members 40,

having register-ing holes 42, preferably substantially rectangular in outline to receive the wedge 44. f Extending downwardly fromthe arm portions 40 are varm portions 40a inthe form of spaced side plates connected together` as at 46 at their lower ends and at one side fof the l the rail, it will be noted that fthe crane will vertical aXis of thearm 34, as-clearly shown in Figure 3. Y

f In the arm members 40at are yregistering elongated holes 48.

The wedgef44 may of the arm members 40' bymeans of a chain 50 to prevent loss.

I provide a second clamp vmember indicated generally at D in Figure8,.comprising an upper arm-member 52 having anelongated hole 54 therein, land lia-ving formed on its lower end the clamp face 56 extending in both directions from the arm 52.

rllie clamp D is provided with two spaced, Y

reinforcing flanges 58 on opposite sides of the lower part 52a ofthe Aarm 52. rlllie clamp'face 56 extends-across the flanges 58 and the arm portion 52a only at the lower par-t thereof.

The flanges 58 project above the clamp face 56 and vare formed at their upper portions4 with journals 60 registering with each other and with the hole 62 in the upper part of the .arm portion 52e as illustrated in Figure '3.

' In assembling the clamp members C and D, the upper part ofthe Varm portions 52 is slipped between the arm members 40 with the arm members 40EL received between-the journals 6() and the arm member 52u.

A pin 64 shown yin 'Figure 5 is extended through 'the journals 60 and the hole v62 and the elongated holes 48.

Whenthis has been done, it will be seen thatthe clamp member D yhas some play on the clamp member C.

be connected withI 'onel away lfrom the downwardly projecting clamp shoulder or face 46 connecting the arm members 40a, so as to receive between the face 46 and the clamp face 56 the ball 66' of the rail 10.

0n account of the play allowed by reason lofthe fact that the holes -48 are elongated, it will be seen that that portion of thek clamp member D, which engages the rail may be vertically adjusted and also laterally -adjusted to some degree'on account of the play of the ,pin 64 in the holes 48.

Vhent-he clamp members have been placed over the rail, :the-wedge 44 is slipped through the holes 42 and 54kv for .drawing the clamp members D and C tightly into'engagement Y with the rail.

It will Vbe noticed that the clamp face 56 has an inturnedgportion 56a at its lower edge for engaging under the ball of the rail.

The Outrigger on the other side of the crane is clamped to the 'rail in the same way.

lWhen tlieoutrigger isv'thus clamped to l be anchored against tilting movement and also that there is a rigid steady connection ybetween theA vfra-.me andthe frameB-and the rail. ,v f

f-"lhus, when,r as illustrated in Figure2, a heavy load 70 iscarried by tliekboom 20, the down thruston `the A frame member 16 adjacent to the boom will be transmitted direct- .ly to the rail toa considerableextent,V instead of being transmitted through the frame B. Similarly7 the uppullfon the -other member 16 will ybe Vtiansiiiitte'd to the opposite rail directly instead of through the frame B.'

lt' will thus be seen Vthat I have provided an Y Outrigger structure, which makes it possible to build a very steady A frame for carrying extremely heavy loads without putting the weight in the frame B that would otherwise be necessary, and it is therefore possible to build the entire crane withv less material and at substantially less expense for handling heavy loads than would otherwise be possible."y K

Changes can be made 'in the details ofthe structure and arrangement of the parts of my improved outriggerstructure, and it is my intention to lcover by my claims any modified forms of structure yor use of vmechanical equivalents, which maybe rea ,sonably included vwithin their scope.

- I claim as my invention:

'1. Ink alstructur'e of the classdescribedpthe combination of a main frame mounted ori* wheels adapted to travel on rails, an upright member supported on said main frame, and an Outrigger comprising a. bracket rigidly connected With said upright member, a clamp member pivoted to said bracket, a second clamp member having a loose pivotal connection With the iirst clamp member, and means for rigidly connecting the clamp members.

2. In an Outrigger structure, a bracket, a clamp member pivoted to said bracket, a second clamp member having a loose pivotal connection with said irst clamp member, and

means for rigidly connecting said clamp members together.

3. ln an Outrigger structure, a bracket, a clamp member pivoted thereon, a second clamp member loosely pivoted to said first clamp member for vertical and horizontal adjustment With relation thereto, and means for rigidly fastening the clamp members together.

4. In an Outrigger structure, a clamp member, means for pivotally supporting said clamp member,k a second clamp member havin a loose pivotal mounting on the first Clamp member, and means for rigidly connecting said clamp members together.

5. In an Outrigger structure, a clamp member, means for pivotally supporting said clamp member, a second clamp member, one of said clamp members having spaced elongated holes and the other having a ournal member, a pin extended through said holes and journal member for looselyT pivoting the clamp members together, said clamp members being provided with elongated holes, and a Wedge adapted to be extended through said last-described holes for rigidly securing the clamp members together.

' 6. In a structure of the class described, a iframe mounted on Wheels adapted to travel on rails, an outrigger device on seid frame comprising a clamp having relatively adjustable jaw members, and means for rigidly connecting the jaw members together for gripping a rail and affording a rigid connection between said frame and the rail.

Des Moines, Iowa, J une 2S, 1927.

GEORGE A. VAUGHN.

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