US905022A - Logging apparatus. - Google Patents

Description

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LOGGING APPARATUS.

Specification of Letters Patent.

Patented Nov. 24, 1908.

Application led February 14, 1908. Serial N o. 415,821.

To all whom it may concern:

Be it known that I, THOMAS VVAsI-IINGTON TILEY, a citizen of the United States, and a resident of Bellingham, in the county of Whatcom and State of Washington, have invented a new and Improved Logging Apparatus, of which the following is a full, clear, and exact description.

This invention relates to logging apparatus such as used at logging camps for moving logs to shipping points.

The object of the invention is to provide an apparatus of this class which will, in operation, give complete control of the logs which are being moved, and which will obviate the necessity of using brakesfor holding the log cable when the log is descending a grade.

The invention consists in the construction and combination of parts to be more fully described hereinafter and particularly set forth in the claims.

Reference is to be had to the accompany'- ing drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan of a logging apparatus embodying my invention, a portion of the view being represented as broken away: and Fig. 2 is a plan view on an enlarged scale of the winch.

Referring more particularly to the parts, 1 represents the winch of my invention, which comprises a frame formed of two parallel joists 2. Near the middle of this frame between the j oists 2, there is mounted a main or winding drum 3, and adjacent to this drum there is arranged a dividing drum 4. The shafts of these drums are provided with bevel gears 5 and 6 respectively, disposed at the side of the frame, as indicated. Beyond the drum 4 I provide two friction drums 7 and 8. These two drums 7 and 8 and the drum 4 are provided with circumferential grooves 9 disposed near their ends for guiding the endless cable 10 as shown. The ends of the drums are provided with gear wheels 11 which mesh together in succession to form a train as indicated. Between the grooves of the dividing drum 4,

projecting collar 12 which separates the two runs of the cable, as will be readily understood.

At the side of the frame bearing brackets 13 are provided, in which there is mounted a sliding shaft 14. This shaft is provided near its forward end with a bevel gear wheel 15, which may mesh with the bevel gear G0 wheel 6 as shown; near its oposite end, a bevel gear wheel 16 is attached, and between the bevel gears 15 and 16 a sleeve 17 is rigidly attached to the sliding shaft. This sleeve 17 is formed at the left side with a 65 bevel gear wheel 18, and at the right with a bevel gear 19. The body of the sleeve is formed with a circumferential groove 20 which enables the shaft to be shifted longitudinally in its brackets by means of a suit 70 able lever 21, the said lever being attached to a shifting spindle 22 having a shifting arm 28 with a pin engaging the groove 20, as illustrated. It should be understood that the sleeve 17 is rigid on the shaft. 75 At a suitable point on the frame a donkey engine 24 is attached, which engine operates to drive a main shaft 25, and this shaft 25, through the gears 26, drives the drum 27 of the donkey engine. The shaft of this drum S0 is extended at the side of the frame, and provided with a bevel gear wheel 28 which is disposed between the bevel A'gears 16 and 18, as indicated. lVlien the lever 21 is in the position shown, the bevel gear 18 is in mesh 85 with the bevel gear 28, so that the rotation of the drum 27 will be transmitted to the .shaft 14 in a forward direction. At this time the bevel gear 15 is in mesh with the bevel gear 6. By throwing the lever 21 over 90 to its opposite position, that is, by moving it toward the right, the bevel gear 18 can be thrown out of mesh with the bevel gear 28, and the bevel gear wheel 16 thrown into mesh with the bevel gear 28 by the'resulting 95 movement of the sliding shaft 14. This movement is suflicient to bring the bevel gear 19 into mesh with the bevel gear 5. From this arrangement, with the same direction of rotation of the drum 27, the direction of rotation of the shaft 14 will be reversed.

The cable 10 is wrapped in coils on the surface of the drum 3, and thence passes under and over, alternately, around the drums 4, 7 and 8. The arrangement is suchY that 105 the runs of the cable pass on opposite sides l of the same drum; that is, if the incoming this drum is provided with an outwardly run of the cable passes under the drum 8, the outgoing run will pass over the drum 8. The grooves 9 are all in alinement with each 110 other so as to facilitate the guiding of the cable, as will be readily understood. A sufficient number of turns of the cable will be made around the drum 3 to give suflicient friction for advancing the cable and holding the cable against sliding, on account of the weight of the logs, when the engine is stopped.

Special attention is called to the arrangement of winding the cable past the drums 4, 7 and 8, which also increases the friction. The outer end of the cable is passed through a sheave block 29, which is mounted in an adjusting block 30, and this block 30 is secured to a fixture such as a tree or log 31, by means of a chain 32. v The adjustment at this point is for taking up the slack of the cable when desired. The logs, such as the log 33, are attached to the incoming run or side of the cable by means of a cable grip 43, the details of which are immaterial.

lVhen the apparatus described is being used for logging it should be understood that the cable is friction-tight on the drum of the winch, and the rotation of the drums 3 and 4 is transmitted through the righthand pair of gears 11 to the drums T and 8. If the log 33 should strike an obstruction in being brought in, it can be released by reversing the direction of the cable by means of the lever 21 in the manner described. 1When the lever 21 is in mid-position, neither of the gear wheels 16 and 18 is in mesh with the gear wheel 2S, and the winch is therefore disconnected from the engine 24. The drum 7 of the engine can then be used for windino` up the cable for any purpose desired.

peeial attention is called to the fact that only one lever is used for controlling the winch. This simplifies the construction and control of the winch very materially.

I-Iaving thus described my invention, I claim as new and desire to secure by Letters Patent:

1. In logging apparatus, in combination, a frame, a pair of drums mounted upon said frame, gear wheels carried respectively by said drums and meshing together, said drums having gears attached thereto for driving the same, a shaft, a pair of gears rotating with said shaft and meshinfy with either of said first gears, and means for shifting said second-named gears to throw them in or out of mesh.

2. In logging apparatus, in combination, a frame, a plurality of drums mounted therein, gear wheels carried respectively thereby and meshing together, bevel gears connected with two of said drums for rotating the same, a shaft disposed transversely to said drums,

bevel gears rotating with said shaft and meshing respectively with said tirstbevel gears to drive said drums in opposite directions, and means for shifting said last-named bevel gears in and out of mesh.

3. In logging apparatus, in combination, a frame, a plurality of drums mounted therein, gear wheels carried respectively by said drums and meshing together, a pair of bevel gears rigid with an adjacent pair of said drums, a sliding shaft, bevel gears rigidly attached to said shaft and adapted to mesh with either of said first bevel gears, means for sliding said shaft to engage or to disengage said gears, and means for rotating said shaft in different directions.

1l. In logging apparatus, in combination, a frame, a winding drum mounted in said frame and adapted to have coils of a cable wrapped thereabout, a dividing drum adjacent to said winding drinn, and having a dividing collar projecting outwardly therefrom and adapted to separate the incoming and outgoing runs of the cable, other drums beyond said first-drums, gear wheels carried. by all of said drums and meshing together, said winding drum and said dividing drum having bevel gears rigid therewith respectively, a shaft, bevel gears carried by said shaft and meshing respectively with said first-named bevel gears, means for shifting said second-named bevel gears in or out of mesh with said first-named bevel gears, and means for driving said shaft in either direction.

5. In logging apparatus, in combination, a frame, a plurality of drums mounted therein, gear wheels rigid with said drums and meshing together, bevel gear wheels rigid with a pair of said drums, lying adjacent to each other, a sliding shaft mounted at the side of said frame, bevel gears carried by said shaft and adapted to mesh with either of said first-named bevel gears, means for shifting said shaft longitudinally, a second pair of bevel gear wheels carried by said shaft, and a driving bevel gear wheel disposed between said last-named bevel gear wheels and adapted to drive said shaft in either direction.

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

THOMAS WASHINGTON 'lIliE\'.

lVitnesses z CLARA ATKINSON, DAVID E. LAIN.

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