US996162A - Overhead crane. - Google Patents

Description

0. L. TAYLOR. OVERHEAD CRANE.

APPLIOATION r1121) 001.111.1910.

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APPLICATION FILED comm-1910.

I 996,162, Ptented June 27, 1911.

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CLARENCE L. TAYLOR, OF ALLIANCE, OHIO, ASSIGNOR TO THE MORGAN ENGINEERING COMPANY, OF ALLIANCE, OHIO.

OVERHEAD CRANE.

Specification of Letters Patent.

Patented June 27, 1911.

To all whom it may concern:

Be it known that I, CLARENCE L'. TAYLOR, of Alliance, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Overhead Cranes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in overhead cranes and particularly to that type known as ladle. cranes, the object being to provide a structure wherein the hoist chains pass downwardly to the outer side of the main girders and the load carrying supports are located in vertical planes intermediate the outer girders, whereby the overturning of the trolley will be prevented in the event the hoist chains at one side of the main trolley should break.

With these and other objects in view my invention consists in the parts and combination of parts as will be more fully described and pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in section of a crane bridge showing the trolley in end elevation. Fig. 2 is a View in side elevation of the trolley, and Fig. 3 is a view in plan of the links 13.

1, 1, are the sectional main girders and 2, 2, are auxiliary girders which may be of 7 plate or box type as preferred. The main trolley 3 is mounted on rails supported on the main girders and travels thereon, while the auxiliary trolley not shown, travels on rails 1 supported on the auxiliary girders, the construction being such that there is no interference to the free travel of the auxiliary trolley from one end of the bridge to the other irrespective of the position of the main trolley.

The two ends of the trolley frame are provided at a point approximately in a vertical plane between the section 1 of the main girders, with the integral bearings '5 in which are mounted the hanger pins '6 carrying the hangers 7. These hangers, two to a side, are centrally mounted on the pins 6, and each carries two rods 8, which latter depends between the main girder section 1, and the four rods 8 at each side, carry and support the sheave carrying frame 9. Each frame 9 carries two sheaves 10, arranged as shown in Fig. 2, and secured to the outer side of each frame 9, are the links 11 which extend horizontally outward and are connected at their outer ends to the vertical links 12, which latter are in turn connected at their upper ends to the links 13, the inner ends of which are secured on a pin 1 1 passing through the bifurcated upper end of the hanger pin 6.

Journaled in bearings 14 on'the frame formed by the links l112 and 13, are the parallel sheaves 15 located at the upper outer corner of said frame and the parallel sheaves 16 located at the lower outer corner of the frame. The main hoist cables 17 are secured to the double drums 18, one at each side of the trolley 3. There is one cable at each side and each cable 17 is secured at one end to its drum 18 and passes in nearly a horizontal direction outwardly over one sheave 15, down and around one sheave 16, over one sheave 19, secured to bearings 20 at the juncture of links 11 and frame 9, down and under a sheave 23 journaled on the ladle carrying beam, up and over sheave 10 on frame 9, down and under sheave 2 1 on the ladle carrying beam, up and over the second sheave 10 on frame 9 down and under second sheave 23 on ladle carrying bar, and thence up over second sheaves 19-16 and 15 and back to the drum where it is secured. I would have it understood however that the particular manner of reeving the cables and connecting the latter to the ladle carrying the bar is not essential, as my invention relates to the manner of supporting the hoist cables at points outside the main girders.

By the arrangement above described it will be seen that the links 13, 12 and 11 which guide the cables, are simply in compression in each instance, and they can be 1 so proportioned that braces to support the weight of the frame formed by the links can be employed as shownat 21, which will have no strains to sustain except the weight of the links. This frame formed by these links can, as shown in the drawings, embrace the outer sections of the main girder and may also embrace foot walks 22 which are provided on the bridge for the ready and free inspection and repair of the trolleys and the drive motor and gearing for the bridge.

The rods 8 depending between the two sections of the main girders support all the load, while the frame composed of links 13, 12 and 11 simply serve as guides for the cables. These frames can be conveniently made of channel bars and as shown in Fig. 3 are triangular in shape, the side links converging outwardly, thus bringing the vertical links just sufliciently far apart to accommodate the sheaves 15 and 16.

It is evident that many slight changes might be resorted to in the relative arrangement of parts shown and described without departing from the spirit and scope of my invention. Hence I would have it understood that I do not wish to confine myself to the exact construction and arrangement of parts shown and described, but,

Having fully described my invention what i I claim as new and desire to secure by Let-- ters-Patent, is

1. In a ladle crane, the combination with sectional main girders, and auxiliary girders intermediate the main girders, of a main trolley, drums thereon, rods depending from said trolley between the sections of the main girders, sheaves supported by said rods, frames secured to the trolley and having connection with said depending rods, and extending outwardly and around the outer sections of the main girders, sheaves on said frames, and ladle carrying cables secured to the drums and passing around the sheaves on the frames and the sheaves supported by the depending rods orlinks.

2. In a ladle crane, the combination with main girders, and auxiliary girders intermediate the main girders, of a main trolley, rods depending from same in planes inter mediate the outer edges of the main girders, outwardly projecting links connected to said trolley, outwardly projecting links having connection with the depending rods in a plane below the main girder and projecting outwardly beyond the latter, vertical links located to the outer sides of the main girders and connecting said horizontal links, sheaves supported by said links and by said depending rods, drums on the trolley, and ladle carrying cables passing from the drum around the sheaves carried by the links and then inwardly over the sheaves in the depending rod's.

3. In a traveling crane, the combination With main girders and auxiliary girders intermediate the main girders, of a main trolley, rods depending from the latter in planes intermediate the outer side edges of the main girders, sheaves supported by said rods, horizontal and vertical links arranged substantially as described, sheaves carried by said links, drums on the main trolley, and cables carried by the drums and passing around the sheaves on the links and over the sheaves supported by the depending rods.

4. In a traveling crane, the combination with main girders. and auxiliary girders intermediate the main girders, of a main trolley mounted to travel on the main girders, rods depending from said trolley, sheaves supported by said rods, frames composed of links, each frame connected at its upper end to the main trolley and having connection at its lower end with the depending rods, braces carried by the main trolley for sustaining said links in operative position, drums on the trolley, and cables carried by the drums and passing around the sheaves on the links, and also the, sheaves supported by the rod.

5. In a traveling crane, the combination with main girders, and auxiliary girders intermediate the main girders, of a main trolley mounted to travel on the main girders, a series of rods depending from said main trolley, sheave carrying frames supported on the lower ends of said rods, sheaves carried by each of said carrying frames, frames composed of links. each frame connected at its upper end to the trolley and atits lower end to its sheave carrying frame, braces carried by the trolley for sustaining said link frames in operative position, drums on the trolley and cables carried by the drums and passing around sheaves on the links and also the sheaves on the sheave carrying frames.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

CLARENCE L. TAYLOR.

Witnesses HARRY W. KING, N. C. FETTERS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G.

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