US1252583A - Log-dog. - Google Patents

Description

A. D. KELLUM.

LOG DOG. APPLlCATlON HLED JAN.18,19\7.

Patented Jan. s, 1918.

Unis:

,AI N D M, or nnwsnnn, non'rrr CAROLINA.

LOG-DOG.

Specification of Letters Patent.

Patented Jan. 8,".191 8.

Applieationfiled January 18, 1917. Serial No. 143,143.

To, all whom e f-may concern Be it known-that LALoNzoD. KELLUM, a citizen of the United States, residing at Newbern, in the county of Craven and State of NorthvCarolina, have invented certainnew and-usefulImprovements in Log Dogs of whichthefollowing is a specification.

This invention, relates to improvements in devices known as 5 log dogs employed for supporting one end of a leg :while .being moved into position for sawing in saw mills, and has for one ofits objects to improve the construction and increase the efficiency and; utility of! devices. of this character.

Another object of the invention is to -provide a device of this character which may be coupled to the ordinary draft chains employed for hauling logs in saw mills and like localities.

With these and other objects in view, the invention consists in certain novel features of construction, as hereinafter shown and described and then specifically pointed out in the claims; and in the drawings illustrative of the preferred embodiment of the invention- Figure 1 is a plan view of the improved device.

Fig. 2 is a side elevation.

Fig. 3 is an end elevation.-

Fig. 4 is a section on the line 44 of Fig. 3.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The improved device comprises a frame or body having a plurality of longitudinally alined spurs at the outer edges, and a plurality of knife edged ribs intermediate the outer spurs with the upper edges of the ribs below the line of the outer spurs, and with means for attaching a draft appliance, such as a log chain, to the body. The body ineludes side members 1011 disposed in spaced relation and in parallel relation to each other, each side member being provided at the upper edge with log engaging spurs 13-14, the spurs at each side of the body being arranged in longitudinal alinement therewith. Located intermediate the side members 10-11 are vertical members 15--16 disposed in-parallel relation and extending below the'lower lines of the members 10+11 as shown. The members l51,6 are connected at their upper ends, as shown at-'17. At each end the portion 17 is provided with a log engaging knife edged rib 18, the upper edges of the latter being slightly convex .and below the line of the main spurs 1314.

The transverse ribs 18 are adapted to engage the body portion of the log-intermediate the outer spurs the log beingindicated by a dotted line in Fig. 3. Thetransverse ribs 18 thus serve as supports for thelog: in coaction with the outer spurs. The spurs and ribs thus engage the logat different points and effectually prevent it from slipping or being displaced from the device.

The members 10 and 15 are coupled by transverse webs 1920, while the members 1116 are coupled by similar webs 2122. The members 1011-1516 are provided with bearings arranged in alinement transversely of the body and adapted to receive a relatively heavy rod or shaft 23. Mounted upon the shaft 23 between the members 10-15 is a bearing roller 24, while a similar bearing roller 25 is mounted upon the shaft 23 between the members 1116. The rollers 24-25 are sufficiently large to project below the lines of the members 1011, and likewise project above the upper lines of the members 1920 and 2122. The portion of the shaft 23 which extends between the members 1516 is designed to receive the pulling chain, a portion of which is indicated at 26. The members 2425 thus support the structure, and are designed to travel upon suitable guideways or tracks, portions of which are represented at 27.

The tracks 27 are disposed in spaced relation as shown in Fig. 3, and the bed or support 28 for the tracks is formed with a depression or channel 29 between the tracks. The depending portions of the members 1516 extend into this channel and against the contiguous edges ofthe tracks, and thus serve as guides to prevent lateral displacement of the device.

The improved device is designed for use more particularly upon the log chutes in saw mills up which the logs are drawn from the log basin to the saw platform, and may be employed in coaction with any of the various constructions of chutes or logways, and it is not designed therefore to limit the use of the improved device to any particular locality or in coaction with any particular form of logway or basin.

The vertical frame members including the log engaging spurs and ribs andthe connecting webs will be constructed from a single casting, preferably of steel or malleable iron, of sufficient strength to withstand the strains to which they will be subjected.

In applying the improved device the log is simply rolled over upon the device, or the device inserted beneath the log, and the coupling between the log and the device ac complished entirely by the gravity of the log, and requires no other fastening devices or grips. The log is prevented from rolling or lateral movement by the coaction of the side spurs 13 and the central supporting ribs 18. The upper edges of the members 18 are knife edged, as shown, while the spurs 13-14 are pointed, and will thus enter the material ofthe log and retain the latter in position.

Having thus described the invention, what is claimed as new is- 1. A log chain dog comprising side and intermediate log-engaging members, the intermediate member being constructed to span a log chain and having side portions depending below the side log engaging members to form track-engaging guides, a draft rod inserted through the lower portions of the log-engaging members to engage a log chain between the sides of the intermediate member, and rolling supports mounted on said rod between the intermediate log-engaging member and the side log-engaging members. a

2. A log chain dog comprising side and intermediate log-engaging members, the intermediate member being constructed to span a log chain, webs connecting the intermediate member with the respective side members, a draft rod inserted through said members below the webs, and rolling supports mounted on said rod. 7

In testimony whereof I affix my signature. ALONZO D. KELLUM. [1 s.]

Copies 01' this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C.

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