US1403535A - Chock block - Google Patents

Description

F. ARN.

CHOCK BLOCK.

ABPLICATION FILED APH. 13, |920.

1,403,585. Patented Jan. 17,1922. i

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UNITED STATES PATENT oFFlcs.-

FBEDAIRN, 0F CHATTANOOGA, TENNESSEE, `ASSIGNOIRL TO J'. M. CARD LUMBER CO.,` 0F CHATTANOOGA, TENNESSEE, A. CORPORATION OF TENNESSEE.

CHUCK BLOCK.'

'Specication of Letters Patent. i Patented 33111.17, 1922.

Application led 'April 13, 1920, Serial No. 373,517`

To all whom t may concern:

Be it known that I, FRED ARN, a citizen of the United States, and resident of C-hattanooga, county of Hamilton, State of Tennessee, have invented certain new and useful Improvements in' Ohock Blocks, of which the following is a specification.

My invention relates to -chock blocks used in transporting automobiles for holding them on the car ioor.

One object of my invention is to provide a block which is capable of being made at a highrate of production, will provide means whereby the nails which are employed for aflixing the blo'ck to the floor, may be readily positioned to be driven substantially perpendicular to the ioor and which will permit the hammer blows to be applied without requiring unusual care or skill on the part of the workman, and will present a large surface area on its bottom 'ace for Contact with the iloor and will have an extending rear heel portion providing a bearing part well in the rear of the upper portion of the block.

The invention is shown in the accompany-- ing` drawings in which igure l' is a side elevation of the block and Fig. 2 a perspective view.

These blocks are made from wooden timbers, they are of solid formation and are of such form that the can be expeditiously produced. Each b ock comprises vertical sides l, a base 2 and a curved front face 3, which is grooved lengthwise so as to conform substantially to the curve of the tire of the wheel which is to be checked by the block. The block has a vertical rear face 5 and an extension 6 at the lower portion of this vertical rear face, said extension projecting rearwardly therefrom. The upper 'face of this extension is substantially horimer blows y or driving the nail through the block and through the floor of the car on which the automobile is to beltransported. This rear extension also 'provides an addition to the lower or base face of the block so that the lower face which comes in contact withthe door of the car will be of considerable area and -will thus have a better holding effect or contact with the car floor. This rear heel extension'will also provide a bearing well towards the rear of the vertical face and the top of the block so that it will be impossible for the block to tip up towards the rear under the pressure from the wheel of .the automobile. Ordinarily the pull on an automobile chock block is such that there is a tendency to draw out the nails if these are driven in diagonally or in other words inclined downwardly and towards the front of the block. It has been vfound in tests that the perdendicular nail has the greatest strength and holding power, andthe extension heel on the present block enables the nail to be driven in a position perpendicularpto the floor.

One advantage of the present construction is that although the block is provided with a rear extension for receiving the nails l in substantially perpendicular position the block is light in weight, because of the material which is cut out in forming the vertical face and the extension heel. It will be obvious that if the extension were made by inclining the rear face from the upper e ge of the block to the rearmost point, for instance, along the dotted line m, in Figure 1, the material left in the space y would add to the weight of the block and when it is considered that these blocks are made in enormous quantities and shipped in car load lots, the comparatively smallsaving in Weight in each individual block constitutes a great saving in weight and in material when it is considered that thesel blocks are made and shipped in the large quantities mentioned.

I claim as my invention:

A chock block for automobiles consisting of a solid piece of wood having a horizontal lower face and a curved front face, a rear face and a heel extension at the lower portion of the rear face projecting rearwardly therefrom beyond the rearmost vertical plane touching said rear face and in line sion, the said upper face of the heel eXtension terminating at a point above the plane of the lower face of the block substantially 1 0 as described.

In testimony whereof, I aiix my signature.

FRED ARN.

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