US298405A - Derrick - Google Patents

Description

(No Model.)

A. REITZ.

DERRICK.

No. 298,405. Patented May 13, 1884.

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ADAM REITZ, OF ST. LOUIS, MISSOURI.

DERRICK.

SPECIFICATION forming part of Letters Patent No. 298,405, dated May 13, 188%.

Application filed April 7, 1884. (No model.)

To all whom, it may concern:

Be it known that I, ADAM BEITZ, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented a new and useful Portable Derrick, of which the following is a specification.

The object of my invention is to overcome the present difficulties existing in loading and unloading large and heavy stones on and off wagons in stone-yards, which is usually accomplished by means of rollers and bars, which method is cumbersome, slow, and expensive, as well as difficult and unsafe.

My invention consists in anew and improved derrick which can easily be moved from place to place, as desired.

To better describe the construction of my improved derrick, and to better enable others to understand the same, reference is had to the accompanying drawings, in which- Figure 1 is a cross-section of my derrick as in use. Figs. 2 and 3 combined are a side elevation. Fig. 4: is aperspective view of a piece of the lowerarch. Fig. 5 isa perspective view of a piece of the upper arch.

Similar letters refer to similar parts throughout the several views.

A are legs or standards, made of plate iron or steel, and A is an arch connecting these legs, also being of plate iron or steel. The legs and arch are made in two or more seetions, the purpose of which will be hereinafter fully described, or they can both be of one piece. The span of the arch or space between both legs will be made sufticiently large to span or bridge over any ordinary wagon, and the height in clear of the arch will be made sufficient to allow the stone to be moved to fully clear the wheels of the wagon.

B is a sub-arch which spans over the lower arch, A, and has legs or standards B, and is similarly constructed of plate metal, in sections-two or 1noreor in one piece, but has a larger radius, and serves as a brace or strengthener for the lower arch, A.

a are braces between the two arches, to keep them both firm.

a are straps bolted around both arch and the legs of both arches to keep them together.

0 To the side of one le is secured a crab or 5 a winding mechanism, 0, of the ordinary crank, drum, and gearing. From the drum a rope or wire cable, 0, passes over a pulley, 0,011 the upper part of the leg, and thence in the groove 0 formed in the plate-iron of the inner arch, and over rollers c on the top of the arch A, to the middle of same, down and around pulley-blocks c c, to which the chain and hooks for holding the stone are attached. From the blocks the cable passes over a roller on the other half of the arch, and around the latter, down to and through the foot-plate O of the other leg, and fastened to same.

To enable stones of unusual size to be raised by my derrick, I make the arches in two or more sections. These sections are indicated as 1 2 3 4., &c.

dare ribs riveted on the one side of the plates, and their ends project over from one section. to the other, so that when said sections are apart the space between is bridged over by said ribs.

Between the ribs of the lower arch and its legs I make a groove, 0, to allow the rope or cable to run in.

0 are bars forming rollers for the cable, and these rollersturn in grooves formed crosswise in the plate of the inner arch. (Clearly shown in Fig. 4.)

d are casters, rollers, or wheels under each foot plate, which permit the derrick to be moved from one place to another in the yard; or, if desired, wheels may be used to run on a tramway. 1

e are braces for steadying the legs' on the foot-plates.

e are braces which extend from the plate 6 top of the arch, to the ground, and serve to keep the derrick plumb.

c is a cross-brace to keep the legs from spreading.

This derrick may be made of any size and to suit the purpose of turning and lifting stones for blocking up while they are being dressed. Its use may be adapted for other purposes, such as raising heavy timber in lumber-yards, 85c.

Having thus fully described the construction of myimproved derrick, what I claim is' 1. A portable derrick constructed to form anarch, as herein shown and described, the rope or cable passing from a crab on one .leg, up and over the arch to its middle,thence down and through pulley-blocks, and finally up and over the other half of the arch, down, and fastbeing constructed of plate metal, having ribs 10 ening to the foot-plate of the other leg. d, and the groove 0 in the inner arch and legs,

2. In a portable derrick, the legsA and B, and the braces a and straps a, all constructed and double archAandB, formed insections or as herein shown and described, and for the of one piece, the foot-plates G, casters or purpose set forth. wheels d, crab G, and the rope or cable 0, all I combined and constructed as herein shown Witnesses: and described, as and for the purpose set forth.

3. In a portable derrick, the legs and arches,

ADAM REITZ.

CHAS. F. MEIsNisR, CHAS. E. METZ.

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