US293244A - Log-loader - Google Patents

Description

2l SheetsSheet 22 (No Modell) J. P. HANSON.

LOG LOADER.

No. 293,244. Patented Feb. 12, 18.84.

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UNITED STATES l @Armar Fries.

JAMES I?. HANSON, OF OSHKOSH, WISCONSIN.

noe-LOADER.'

SPECIFICATION forming part of Letters PatentNo. 293,244, dated February 12, 188i-,

Application filed December 8, 1883.

(No model.)

.To all whom it may concern: A

Be it known that I, JAMEs P. HANsoN, a citii zen of the United States, residing at Oshkosh,

in the county of Vinnebago and State of Visconsin, have invented certain new and useful Improvements in Log Stops for Saw Mills; 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, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon,which form a part of this specification.

The object of my invention 'is to provide a device for stopping logs as they are rolled down an inclined logway or deck from the bull-chain to the log-carriage preparatory to being sawed, the stops of which device are adapted, as they are passed over by one log, to be simultaneously thrown up by the gravity of such log in front y of the next succeeding log, such succeeding log being thus retained until required.

The construction of my invention is further explained by reference to the accompanying drawings, in which Figures l and 2 represent side elevations, showing, respectively, the positions of the stops when holding the log and when being'passed over by it. Fig. 3 is a plan view,land Fig. 4 a detail.

Like parts are represented by the same reference-letters throughout the several views.

A A A are inclined logways, upon which the logs B are rolled from the bull-chain C to the log-carriage D.

E E are the series of stops, which are centrally pivoted upon independent trunnions F,

which are respectively provided with journalboxes G. The pivotal support of the stops E are located sufficiently low relatively to the ways A to permit the log to roll over the center of such stops upon said ways unobstructed. Each stop E in the series is connected with a single shaft, H, by links I and arms J, whereby all of the stops in the series are simultaneously operated as said shaft H is turned. Motion is communicated to shaft H in one direction `by the operator from the log deck K through the rope L. The rope L is suspended, in a convenient position to be reached by the operator, upon pulley-sheaves M M, and from ity of said weight I), which, as it descends,

turns said pulley O toward the right, as indicated by the arrows in Fig. 1, whereby the shaft H, which is rigidly attached to said pulley O, is turned nearly or quite a quarter of a revolution, and motion is communicated from said shaft H to the several stops through the arms J and links I. Thus the stops'are thrown upward by the gravity of the weight P acting through the rope L, and are drawn down by the operator as he draws down upon said rope.

Q is a stop, which is attached to and held in place by the timbers R R. The office of the stops Q is to check the movement of the several arms at the desired point, said stop being arranged slightly at the right of the central4 line between the center of the shaft H and the pins S, whereby the joint T, when brought to bear against said stop, will be thrown slightly past said central line, whereby the weight of the log bearing againstsaid log-stop E will be resisted by said stops Q, and the liability of the log-stops being accidentally throwndown is thereby obviated. It is obvious that when the front or large end of the log-stop E is thrown down by the operator its tail or smaller end is thrown up, as shown in Fig. 2, and that as the log rolls on it is brought in contact with said tail end, whereby the front end of the stop will be crowded up infront of and against the next succeeding log by a force equal to the gravity of the first log. Thus, when two logs are in close proximity to each other, as indicated in Fig. 2, the stop will be forced up between the iirst and second logs by the gravity of thetirst 'plus the gravity of the weight'I), the weight I) alone serving, however, to throw up said log-stops when unobstructed by logs.

If desirable, a friction-pulley may be substituted for or attached alongside of the pulley O up on the shaft H, and motion communicated thereto by a movable friction-pulley, in the or- ICO dinary manner, and said stops operated by the motive-power of the mill.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In devices for stopping and holding logs preparatory to being sawed, the combination of a series of two or more log-stops, E, pivoted centrally below the upper surface of the logways, shaft H, extending beneath said several log-stops, and provided with arms J, rigidly attached thereto, links I, communicating between said arms and said stops, and means for communicating motion to said shaft7 whereby said stops are thrown up as said shaft is turned in one direction, and drawn down as it is turned in the opposite direction, substantially as set forth.

J. I. H ANSON.

' Vitnesses: A

A. XVILsoN, Gno. XV. BURNELL.

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