US1353503A

US1353503A - Log-skidding grapple

Info

Publication number: US1353503A
Application number: US302789A
Authority: US
Inventors: Andersen Hans
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-06-09
Filing date: 1919-06-09
Publication date: 1920-09-21
Anticipated expiration: 1937-09-21

Description

H. ANDERSEN.

LOG SKIDDING GRAPPLEP APPLICATION FILED JUNE 9.1919.

rn w m. M2 Z Mm WW 5 M mam fl W P H. ANDERSEN. LOG SKIDDING GRAPPLE. APPLICATION FILED JUNE 9.1919.

1,353,503. PatentedSept. 21,1920.

3 SHEETS-SHEET 2- [74/76. ill/en oy ensen fig hisfliionrzeys H. ANDERSEN.

LOG SKIDDING GRAPPLEV APPLICATION FILED JUNE 9. 1919.

1,353,503. PatentedSept. 21\, 1920.

3 SHEETS-SHEET 3.

iiil' 3 'I W flans Andefsen UNITED sira'rs ans ANDERSEN, or NYMORE, MINNESOTA.

LOG-SKiDDING GRAPPLE Q v Specification of Letters Patent. 21, 19 20.

Application filed June 9, 191a Serial no. 302,789;

T 0 all whom it may concern Be it known that I, Hans. 'ANDERSEN, a citizen of the United States, residing at Nymore, in the county of Beltrami and State of Minnesota, have invented certain new and useful Improvements in Log-Skidding Grapples; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will on able others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide a log skidding grapple; and, to this end, it consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views. 4

Referring to the drawings c Figure 1 is a plan view of the improved grapple in position to engage alog, some parts being broken away and. sectioned;

Fig. 2' is a view partly in side elevation and partly in section of the parts shown in F i .1'

Fig. 3 is a fragmentary detail view, partly in plan and partly in section, taken on the line 33 of Fig. 2; a a

Fig. 4 is a fragmentary View, partly in elevation and partly in section, taken on the line 4-4: of Fig. 1; v 7 Fig. 5 is a perspective view of the grapple headand a portion of the pulling link; and Fig. 6 is a detail view, partly in elevation and partly in section, taken on the line'6 6 ofFig. 1. V

The numeral 7 indicates ahead that is bifurcated to afford a pair of upper and lower prongs 8, which, in turn, are bifurcated to afford pairs of hinge lugs 9. The head 7 is also provided with a square shank 10, which projects in an opposite direction from the prongs 8, and extending throughits inner end portion, is a horizontal slot 11. 'A pair of crossed and reversely curved grapple levers 12 extends between the prongs 8 and is pivotally connected thereto by a bolt 13. On the free ends or" the long, arms of the levers 12, are inwardly projecting barbs 1 1, and secured in the free ends of the short arms of said levers are links 15. These links 15 have interlockingengagement with a pulling link 16 having formed shown, will be attached to cured over the'ground.

pressed therein, there :end portion and has ratchet teetlr21 on the bottom of the channel. The latch bar 20 is pivoted'to ple levers 12 'to'close. The not therewith a sleeve 17 mounted on the shank 10. .Thesleeve 17 is square in crosssection and closely fits the shank -l0on which it is free to slide endwise, but isheld against is understood that a cable or chain, not the link 16 for dr'aggingthe logto which the grapple is se- To look the long arms of the grapple levers 12 against opening movement, when closed onto a log Y, with their barbs 14 is provided a latch comprising a segmental channel member 19 and a cooperating segmental bar member 20.

The latch. member 19 is rigidly secured to the intermediate portion of the short arm of one '01? the grapple levers 12 with its free extending through the slot 11 the short arm of the other grapple lever 12, loosely lies in the channel of the latch member 19, and-- is provided with ratchet teeth 22' adapted to interlock with the ratchet is moved toward the head 7. Of course, it

teeth 21. The ratchet teeth'2 l and 22 are arranged to hold the short arms of theg'rapagainst spreading movement, and he11o'e',a like movement of the long arms of said levers, but will freely slide over each other to permit the long arms of said levers ches 18in the sleeve 17 atford clearance for the latch members 19 and 20, as shown in Fig. 1. A spring '23, .se-

ratchet teeth 21, there is provideda lock in theform 01' two short rods 24 and 25 con nected' by a turn-buckle 26. The outer end of the rod 2 1 is pivotally connected to the cured to the same grapple lever 12 to which i the latch member 20 is intermediate portion of the latch bar 20and the other end of therod 25 is bent to form a hook 27, which is interlocked with a slot 28 in a lug 29 on the short arm ofthe same grapple lever 12 with said latch bar. When the lock r'ods 24 and 25 are extended by the turn-buckle 26, to prevent separation or" the ally connected v ranged to permit opening and closing moveratchet teeth 21 and 22, the hook 27 on the rod 25 bears against the outer end of the slot 28 as a base of resistance. a

A pair of skid bars 30 have on one of their ends hinge lugs 31, which extend between the hinge lugs 9 on the head 7, and are pivotthereto by hinge bolts 32 arments of said skid bars, at right angles to like movements of the grapple levers 1 2. These skid bars are of substantially the same length and curve as the long arms of the grapple levers 12 and extend therebetween. ()n the inner faces of the other or free ends of the skid bars 30 are holding lugs or bosses 33 arranged to engage a log Y, at diametri- V cally opposite points, and thereby hold said skid bars against circumferential movement thereon. vA multiplicity of longitudinally extended ribs 34 are formed on the outer faces of the skid bars 30 and hold saidskid bars from slipping edgewise, when in en- 7 gagement with the ground Z.

The long arms of the grapple levers 12 are intermediately connected by a toggle In case the pull on the link 16 should becomeslack; for instance, when going down grade, the base. of resistance for the locks 24, 25 and 26 might yield, by a slight spreading movement of the grapple levers 12, and thereby permit the latch bar 20 to move sufficiently to allow its ratchet teeth 22 to separate from the ratchet teeth 21, werelit not for the spring 23.

When the improved log-skidding grapple is applied to a log, the grapple levers 12 extend substantially in a horizontal plane and the skid bars 30 extend in substantially a vertical plane, with the front end of the log resting on the lower skid bar, as shown in Fig. 2 This lower skid bar 30 acts as a curved runner for the front end of a logand prevents the same from digging into the ground, ice or snow. The long arms of the grapple levers 12 and the skid bars 30 also act as a guard to guide the log past obstructions.

WVhat I claim is 1. A log skidding device comprising a rigid head, a pair of cooperating grapple levers intermediately pivoted to said head, and a relatively wide'skid bar pivoted at the grapple levers and skid its forward end to the head for vertical swinging movement in respect to the grapple levers.

2. A. log skidding device comprising a rigid head, a pair of cooperating grapple levers intermediately pivoted to said'head, and a pair of relatively wide skid bars pivoted at their forward ends to the head for verticalswinging movement in respect to the grapple levers.

3. A log skidding device comprising a ri id head, a pair of cooperating grapple levers intermediately pivoted to said head, a relatively wide skid bar pivoted at its forward end to the head for swinging movement transversely of the movement of said levers, a toggle lever connecting the grapple levers, and a connection between the skid bar and joint of the toggle lever, whereby the grapple levers and skid bar are simultaneously openedand closed. I

4, A log skidding device comprising a pair of cooperating grapple levers, a pair of skid bars pivoted for movement transversely of the movement of the grapple levers, and two toggle levers, the one connecting the grapple levers and the other theskid bars, said two toggle levers being connected at their intermediate joints, whereby the grapple levers, and skid, bars are simultaneously opened and closed.

5. A log skidding device comprising a head, a pair of cooperating grapple levers intermediately pivoted to said; head, a pair of skid bars pivoted to the head for movement transversely of the movement of the grapple levers, a pulling link having a sleeve slidably mounted on the head, and coupling iints between the grapple levers and pulling in V 6. A log skidding device comprising a head, a pair of cooperating grapple levers intermediately pivoted to said'head, a pair of skid bars pivoted to the head for movement transversely of the movement of the grapple1evers,a pulling link having a'sleeve slidably mounted on the head, coupling links between the grapple levers and pulling link, and connections for simultaneously opening and closing the grapple lever and skid bars.

7. A log skidding device comprising a bi- V furcated head,a pair of cooperatingv grapple levers intermediately pivoted to and between the prongs of said head, a pair of skid bars pivote to the prongs of said head for movement transversely of the movement of the grapple levers, pulling connections between the grapple levers, and connections for simultaneously openlng and closing the grapple levers and skid bars.

8. A log skidding device comprising a head, a pair of cooperating grapple leversintermediately pivoted to said'head, pulling connections between said levers, and a latch comprising two ratchet tooth-equipped members which, when interlocked, hold the long arms of the grapple levers against opening movement, one of said members being rigidly secured to one of the grapple levers and the other thereof being pivoted to the other of said grapple levers.

9. A log skidding device comprising a head, a pair of cooperating grapple levers lntermediately pivoted to said head, pullingconnections between said levers, a latch comprising two ratchet tooth-equipped members which, when interlocked, hold the long arms of the grapple levers against opening movement, one of said members being rigidly secured to one of the grapple levers and the other thereof being pivoted to the other of said grapple levers, and a spring under strain to hold the movable latch member interlocked with the fixed member thereof.

10. A log skidding device comprising a bifurcated head, a pair of cooperating grapmember, said channel latch member havin on its bottom ratchet teeth with which of; teeth of the ratchet bar interlock to hold the grapple levers against opening movement.

in presence of two witnesses,

. HANS ANDERSEN.

lVitnesses:

CLARA DEMAREST, HARRY D. KILGORE.

In testimony whereof I affix my signature said head, a