US2708467A - Log turner - Google Patents

Description

May 17, 1955 Filed Nov. 7, 1952 LOG TURNER v. E. KEENEY ETAL 5 Shets-Sheet 1 1N VENTORS iVaJZeronEKe 11. 63

Earl/@312 aie'rens Y ATTORNEYS May 17, 1955 V. KEENEY EI'AL LOG TURNER I5 Sheets-Sheet 2 i r 3 V ATTORN E Y5 y 7, 1955 v. E. KEENEY EIAL 2,708,467

LOG TURNER Filed Nov. 7, 1952 3 Sheets-Sheet 3 INVENTORS 34 lademnfizrene 'h rlreri aSZe wens BY m ATTORNE\5 United States Patent LOG TURNER Vaderon E. Keeney and Herbert D. Stevens, Marcola, Oreg.

Application November 7, 1952, Serial No. 319,398

1 Claim. (Cl. 143-103) This invention relates to a log turner.

An object of this invention is to provide a means for turning logs which are being sawed by a saw, a portion of the device being mounted on the log carriage and another portion at one side of the line of travel of the carriage, whereby the log may be turned after each cut.

Another object of this invention is to provide a log turning means which is simple in construction and capable of handling logs of various diameters.

A further object of this invention is to provide a log turning means wherein the prime mover is fluid and may be either air or liquid.

A further object of this invention is to provide a log turning means which is so constructed and arranged that it is impossible for harm to be caused to the carriage, saw or log deck by improper use of the log turner.

With the above and other objects in view, our invention consists in the arrangement, combination and details of construction disclosed in the drawings and specification, and then more particularly pointed out in the appended claim.

In the drawings:

Figure 1 is a detailed end elevation partly in section, of a log turning device constructed according to an embodiment of this invention,

Figure 2 is a fragmentary front elevation of the device,

Figure 3 is a fragmentary sectional view taken on the line 3-3 of Figure 2,

Figure 4 is a fragmentary sectional view taken on the line 44 of Figure 2,

Figure 5 is a fragmentary sectional view taken on the line 55 of Figure 4,

Figure 6 is a fragmentary sectional view taken on the line 66 of Figure 4,

Figure 7 (Sheet 1) is a fragmentary sectional view taken on the line 77 of Figure 1.

Referring to the drawings, the numeral 10 designates generally a movable carriage embodying a frame 11 having wheels 12 and 13 which are movable over rails 14 and 15. The rail 14 is of inverted V-shape, and wheels 12 are grooved wheels whereby the carriage 10 will be held against lateral movement.

The frame 10 has mounted on the upper side thereof a transversely extending bed 16 on which is mounted a right angularly shaped abutment member generally indicated at 17. The abutment member 17 includes a lower horizontal side 18 which is adjustably secured relative to the bed 16 by means 19, and the abutment member 17 also includes a vertical side 20.

A guide member generally indicated at 21 mounted on a shaft 22 which is carried by the upper end of the vertical side of abutment 17. The guide 21 is formed of a pair of parallel guide bars 23 connected together by a connecting web 24. The bars or sides 23 are each provided with a pair of elongated openings 25, the purpose for which will be hereinafter described.

A cylinder 26 is disposed in the guide 21 and has a piston rod 27 extending from the upper end thereof is swingably "ice which is fixedly secured to a crosshead 28 (Fig. 4) ex- The cylinder 26 is adapted to be connected adjacent the,

upper and lower ends thereof, as indicated at 31 and 32 respectively, to a source of fluid may be air or liquid.

The lower end of the cylinder 26 has secured thereto a log turning hook 33 which includes a rearwardly projecting web or arm 34. The guide 21 is adapted to be rocked about the shaft 22 by means of a pressure operated cylinder 35, having a piston rod 36 extending from the forward lower end thereof, and rod 36 is pivotally connected as at 37 to the web or ear 34. Cylinder 35 is adapted to also be connected to a source of fluid pressure supply which may be either air or liquid.

A skid member generally indicated at 38 is rockably mounted as at 39 laterally of the line of travel of the carriage 10, and skid 38 has connected with the inner portion thereof a pair of pressure operated members 40 whereby the inner portion of the skid 38 may be vertically moved during the turning operation and during the initial placement of a log on the bed 16 of carriage 10.

A skid or log support 41 extends laterally from the adjustable skid 38, and a pair of push levers 42 are rockably mounted on a pivot member 43. The arms or levers 42 are pivotally connected to a piston rod 45 associated with a pressure cylinder 46. The pressure cylinder 46 is adapted to be connected to a source of fluid pressure supply, such as air or liquid. Forward swinging of guide 21 is limited by a stop 47 (Figs. 2 and 3) which is fixed to bed 16 so that hook or dog 30 will not contact the saw or the lift skids.

The log L which is to be sawed may initially move to the left (in Fig. 1) over the skid 41 and at this time the levers or arms 42 will be swung downwardly so as to be out of the way of the log. The log L will roll down the skid 41 onto skid 38 whereupon push arms or levers 42 may be raised upwardly so as to push the log forwardly over skid 38 onto the bed 16. The abutment 17 is initially adjusted relative to the right edge of carriage 10, as viewed in Figure 1, so that the desired portion of the log will be disposed in a position to be cut by the saw as the carriage moves past the saw. After one cut has been made, the carriage is returned and log turning hook 33 is then moved inwardly by actuating cylinder 35 and cylinder 26 may then be elevated so that hook 33 will contact with the log. As cylinder 26, with hook 33 fixed thereto is raised, the log L will be rotated on bed 16 and in the event the log L should roll at least partially ofi of bed 16, the log will contact with adjustable skid 38 and levers or arms 42 may be rocked upwardly so as to push the log L to the left and back onto the carriage bed 16. The turning operation of the log may, after some experience by the operators, be effected while the carriage 10 is in motion so that the turning operation of the log may be effected quickly and without any lost time or lost motion.

With a manually operated 4-way valve connected to cylinders 26 and 35, the operator can turn the log L a quarter turn or half turn with considerable ease. Cylinder 35 can also be actuated to kick the back stand or piece of log remaining after the last cut off the log carriage. This is much faster and therefore superior to the present method ordinarily used, of running abutment member 17 forward toward log L to the edge of log carriage 10 until back stand falls 04f.

We do not mean to confine ourselves to the exact details of construction herein disclosed, but claim all variations falling within the purview of the appended claim.

What we claim is:

pressure supply which A log turner comprising a movable carriage, a bed on said carriage, a right angled log abutment on said bed having one side thereof horizontal and the other side thereof vertical, a substantially vertical guide, a pivot connecting said guide with the upper extremity of the vertical side of said abutment, a log turning hook, pressure operated slide means fixed to said hook and slidable in said guide for raising said hook, said pressure operated slide means comprising a substantially vertical cylinder, rollers carried by said cylinder engaging said guide, a piston in said cylinder, a piston rod extending from the upper end of said cylinder, and means securing the upper end of said rod to the upper portion of said guide, and pressure operated means connected between said hook and said horizontal side of said abutment for swinging said guide and hook about the horizontal axis of said pivot.

References Cited in the file of this patent UNITED STATES PATENTS McLarty Aug. 14, 1923

Images