US1108416A - Logging-bunk. - Google Patents

Description

H. L. WILLIAMS.

LOGGING BUNK.

APPLICATION IILED MAY 18,1914.

Patented Aug.25,1914.

2 SHBETS-SHEBT 1.

171116 R tor Attorney.

THE AORRIS TERS CO, PJ'IDTOJJTHO, WASHING mm. D. I:

H. L. WILLIAMS.

LOGGING BUNK.

APPLICATION FILED MAY 18, 1914.

1,108,416. Patented Aug. 25, 1914.

2 SHEETS-M11331 z.

Attor- THE .IURRIS PETERS ca. PHunwL/Tno, WASHINGTON D. C.

a0 a a provide a strong ande'llicient type of stake HERBERT L. WILLIAMS, or nvnnnrr, WASHINGTON,

ASSIGNOR OF ONE-HALF TO PERCY n. aivrnssor nvnanrr, WASHINGTON.

LOGGING-BUNK.

ToaZZ whom it may concern:

Be it known that I, I'IERBERT L. WVILLIA S, a citizen of the United States, residing at Everett, in the county of Snohomish, State of WVashington, have invented a new and useful Improvement in Logging-Bunks, of which the following is a specification.

My invention relates to an improvement in logging bunksand stakestherefor, and

comprises the novel features which will be hereinafter defined by the claims.

One object ofmyinvention is to provide a bunk of a shape and material such that it will be g for the amount of material therein, will securely hold the logs th position'in which. they are placed thereon and one. which will not collect or hold dirt, and one in which the movable parts are pro- .Itected against clogging or interferenceiby dirt or rubbish. 1

Another object of myinvention is to pro- *vide an improved typeof logging bunk and therewith a chock which may be used in niany cases without other means for hold ing the logs in place on the bunk, and also means for holding this chock against release, and whereby the same may be quickly and safely released from i the opposite side of tlie car.

A further object of my invention is to for use in connection with said bunk, which may be released for the discharge ofthe load by the act of tripping the chock. 1

therewith.

,Other. objects of the invention will b brought out in the specification and claims. In the accompanying drawings I have shown my invention in the form which is new preferred by me.

F'gure 1 is a longitudinal sectional elevation of the bunk andchocks, the central portion being cut away toshorten the figure. Fig. 2 is a transverse sectional elevation, taken through the central partof the bunk. Fig. 3 is an end elevation of the bunk with the chock removed. Fig. 4 is a sectional longitudinal elevation of one end of a bunk, taken just at one side of the check. Fig 5 is a side elevation of a bunk, showing the checks in raised position, and stakes in use Fig. 6 is an end elevation of a bunk with a stake thereon.

Thc bunk 1 asherein shown, is supposed to be made ofmetal, preferably a steel cast- Specificationof Letters Patent. Patented Aug, 25 1914 l Application filed ua ia, 1914. Serial No. 839,223.

ing, and in the major part of its length has an inverted V-shaped cross section, as is clearly shown in Fi 2. Flangesll at the ends of each arm of they, serve as a base. The sides or arms 10 are preferably slightly curved,'the convex side beingoutward, and their point of junction the curve of the sides becomes a straight line, forming a sharp apex 12, This sharp upper edge will tend to cut slightly into the logs and thus hold them securely against sliding transversely of the bunk and longitudinally of the logs. At each end of the bunk its upper line is separated at the top forming vertical flat sidesor flanges 13.

Between the side walls of the bunk, at each end at about the point where the tria angular section merges into the fiat vertical walls 13, is pivoted a chock 2. The pivot upon which the logs rest. j

cut; down or lowered slightly, and the sides.

pin 20 of this chockis supported in short 1 slots 21 in the side walls of the bunk, Whereby the chock may have a slight bodily movement lengthwise the bunk, while this part of the chock is held against vertical movements. The chock in the preferred form shown, has side walls 22, an upper and inner face wall 28, which connects said side walls, and an outwardly curved face wall 2-1, which 1s made as an arc of a cn'cle with the pivot outer wall of the chock, rests and is supported when in raised position upon a surface 17 at the upper edge of an upwardly pro]ecting portion 16 at the outer end of the bunk. This portion 16 is supported by webs orplates 18 which are spaced inward from the side walls 13 so as to leave slots 141 between the two, of such width aswill re ceive the side walls 22of the chock. The parts 16 and 18 taken together, constitute what might be called an upwardly projecting horn. Its function is to act as a support for the chock when the chock is in its innermost and raised position, as shown at the left in Fig. 1 and in Fig. 4.. If the.

chock be moved outwardly a sufficient dis; tance to carry the outer curved wall 21 be yond the outer end of horn 16, the chock will no longer be thereby supported in elevated position, but will drop to the position shown at the rlght in Fig. 1, in which position the side walls .22 have droppedinto the slots 14:,

85 pin as a center. The lower edge 25, of this the outer lower corner of the check.

and the uppermost part ofthe' chock has. dropped below the upper edge of the bu-nln In this position the logs which may have been supported on the bunk are no longer restrained by the chock, and may freely roll off the bunk.

In addition to the above means for sup checks inraised position until it is shifted outwardly. The surfaces which hold up the outer ends of the checks should preferably be somewhat inclined, so that the Chocks will promptly slide on" as soon as their holding rods 3 are released.

A rod 3. is connected by one end with the pivot pin 20 of the chock. This rod extends within the chamber inclosed between the side walls of the bunk to its opposite end. Here it is provided with a lateral offset or tooth 30, upon its lower side, which ofiset is in such horizontal position that when the chock is its innermost or raised position, this offset will enter andengage the vertical face 31 of a recess 32, which isformed in the end of'th bunk. This recess is of such vertical depth that there will always be sufficient space between the end of the rod 3 and the horizontal bottomv 33, intowhich to insert I a bar, and thereby pry up this end of the rod 3. Preferably the extreme end of the rod 3 should project somewhat beyond the outer end of whereby a hammer or stone may he used to pound up this end of the rod, if it be necessary or more convenient to release it inthis manner. The projection of this end of the rod should, however, be short enough that the chock 2 at this end may pass over the outer end thereof, or into the position shown at the right in Fig. 1.

The rod 8 may be locked in its holding position, orthat shown at the right in Fig. y -ans of a dog 4: which plvots upon a pm 10 which is cast lntegral with the horn 16. The do l 1s a solit do havlns its )arts b l t: ol secured to ether after hem out in )lace.

b b 1 This may be engaged to throw it up prior to releasin the rod 3 and will dro into locking position by gravity. By throwing th1s dog into upper or horizontal position, as is shown at the left in Fig. 1, the chock holoin arm 3 ma have its end raised enough to clear its offset or tooth 30 from the holding face 31 of the bunk, thereby re leasing the check which is connected there with.

In connection with thls type of chock and the bottom 38 of said recess,

bunk, I provide a stakewhich is shown in Figs. 5 and 6. This stake is so constructed that atits lower end it has two separated bars spaced so as to fit over theends of the bunk. It is also provided with lugs, ears, or an equivalent transverse extension,

at 51, so placed that when the lower end of the stake is in its proper position onthe bunk, these lugs 51 will be in engagement with the upperportion of the inner upper face 23 of the chock. The lower ends of the stakes are held in place by means which form av part of the bunk, and which form a pivotal connection, whereby the stake may be swung outwardly and downwardly. In

the form of construction shown at the right hand in Fig. 0 this constitutes a pivot pin and the stake is fixedly secured thereby to the bunk. In the form of construction shown at the left in Fig. 5 twolugs, 6 and 60, are provided at the side of the bunk, between which the ends of the stake are placed, thereby preventing movement of this end in a direction lengthwise the bunk. The shape of these lugs and their size is such that the outwardly and downwardly swinging movement of the stake will not be interfered with. Preferably the inner lower corner of the arms 50 of the stake should bei'ounded, as shown at 53, to further facili-- tate the swinging action of the stake, when the construction shown'at the left in Fig. is used. \Vhen this type of constructionis used, I prefer that the stake be connected with the bunk soas to prevent separation,

swinging too far inwardly, it may be pro vided with a stirrup 5% which embraces the outer surface of the chock. When the stake is fixedly pivoted on the bunk it may be securedin lowered position when desired by means of a link or hook, asshown at 56,

whereby the stake is secured to amember of the car frame.

The downwardly projecting portion 34 at the ends of the bunk, form an abutment or ear which engages the outer surface of a beam 35 which forms a portion ofthe framing of the car. Thisholds the bunk securely in place on the car frame. 1

It will be seen that the log retaining members, the checks and stakes, are supported by two bearings which are separated lengthwise the bunk,- these consisting of the pivots 20 and the bearings at 2517 the inner of these, or the pivot 20, being held against vertical movements, either up or down, 1

while the other, 25l7, is held against downward movement until thechock is moved outward enough. to bring-these surfaces out of engagement, inwhich case only,

only to resist sliding of the chock outward upon the bunk, which is a. much lighter strain. The design of these parts is such that they may be made amply strong to resist any strain to which it is reasonable to expect they will be subjected. The sharp upper edge 01 the bunk causes it to bite into the logs and hold them securely against lengthwise movement. The hollow shape accommodates the chock releasing and holding mechanism and protects it from dirt. Being open at the bottom, any dirt which may enter will be at once discharged. The triangular section of the bunk is also one which is very strong for a given weight.

I claim as my invention 1. A logging bunkcomposed oi? two di verging webs joined along one edge and forming a sharp apex, the base of said angle belng open.

2. A logging bunk composed of two di verging plates or webs joined along one edge and forming a sharp apex, said webs being slightly convexed outwardly.

A logging bunk composed of two diverging webs joined along one edge, the separated edges of said webs being disconnccted and having outwardly extending bearing flanges.

4. A logging bunk composed of two diverging webs connected along one edge, said webs being convexed outwardly and terminating at the apex in flat planes.

5. A logging bunk having a cross section of an inverted V-shape terminating in a sharp upper edge.

6. A logging bunk having a cross section of an inverted V-shape terminating in a sharp upper edge and having chock receiving recesses in its ends.

7. A logging bunk having a cross section of an inverted V-shape, checks mounted on its ends to drop down, means for holding the checks in elevated position and controlling members therefor extending. within the space between the sides of the V to the opposite ends of the bunk.

8. The combination with a logging hunk of a check block having its inner end pivoted upon the bunk and capable of a limited movement lengthwise the bunk, the outer end of the check and the bunk having surfaces engaging to support the chock when the latter is in its innermost position and disengaging when in its outermost position,

and means for controlling the longitudinal position oftho chock upon the bunk.

9. Tilt .(JOlllljllltllllOIl with a logging bunk of a cl1ock:bloek having its inner end 1pivoted upon the bunk and capable of a limited movement lengthwise the bunk, the outer end of the chock and the bunk having sur- :laces engaging to support the chock when the latter in its innermost position and disengaging when the check in its outerfinest position, a rod connected at one end with thechoclr and extending to the opposite cndof the bank, and means for locking said rod controlled from the OpPOSllJQ, end of the bunk.

10. The combination with a lo 'ing hunk of a check block having its inner end pivoted upon the bunk and capable of a limited movement lengthwise the bunk, the-outer end of the chock and the bunk having surfaces engaging to support the chocli' when the latter is in its innermost position and disengaging when the check is in its outerof the bunk.

11. The combination with a logging hunk of a chock block having its inner end pivoted upon the bnnl: and capable of a limited movement lengthwise the bunk, the outer end of the check and the bunk having suriaces engaging to support the check when the latter is in its innermost position and disengaging when the chocl: is in its outermost position, a rod connected with the chock pivot and extending to the opposite end of the bunk, said opposite end of the rod having a side tooth or oilset and the bunk having a shoulder for engagement therewith. when the check is in its innermost position, and manually releasable means for holding down this end of said rod.

12. The combination with a logging hunk of a check block having its inner end. pivoted upon the bunk and capable of a limited movement lengthwise the bunk, the outer end of the chocl: and the bunk having surfaces engaging to support the check when the latter is in. its innermost position and disengaging when the chock is in its outermost pos tion, a rod connected with the chock pivot and extending to the opg iosite end of the bunk, said opposite end oi? the rod having a side tooth. or ocllset and the bunk having a shoulder for engagement therewith when the chock is in its innermost position, and a rotative bar having a lateral projection adapted. to engage and hold down said opposite end. oi the rod.

.13. The combination with a logging bunk oi a chock block having its inner end pivotally supported from the bunk and capable of a limited movement lengthwise the bunk,

ISO

the bunk and chock having surfaces engaging to support the chock in elevated position when the chock is in its innermost position, said surfaces being inclined to induce an outward sliding tendency in the chock, and manually releasable means for holding the check in its innermost position.

let. The combination with a logging bunk having a horn-like projection of a chock block pivoted by its inner end upon the bunk and capable of limited movement length wise of the bunk, the chock having a recess adapted to receive said horn when the chock is in its outermost position and the chock when in its innermost position being supported by the horn.

15. The combination with a logging bunk having a chock supporting horn separated at its sides from other parts of the bunk to form free spaces, of a chock block having its inner ends connected to the bunk by a pivot capable of a limited movement lengthwise the bunk, said chock having side walls separated to correspond to the location of the, free spaces at the sides of the horn and hav- Ting a member connecting said side walls and adapted to rest on and be supported by the outermost portion of the supper surface of the horn, whereby when in its outermost position the chock may drop over the supporting horn.

- 16. The combination with a logging bunk, chock blocks pivoted at the ends of the bunk to drop outward and down, means for holding and for releasing said chocks, stakes having a pivotal engagement with the bunk outwardly of the pivots for the ehocks and having a part adapted to engage the inner face of the chock in its upper part.

17. The combination with a logging hunk of checks and means for holding the chocks in raised position, of stakes having a pivotal engagement at their lower ends with the luink and a supporting engagement with the O. T. WEBB.

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

Washington, D. 0. i

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