US1254545A - Logging apparatus. - Google Patents

Description

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LOGGING APPARATUS.

APPLICATION FILED APII. 24. 1911.

Lmm. PaIenIed Jan. 22, 1918.

3 SHEETS-SHEET 2- INVENTOR ATToRN EY Y. SMITH.

LOGGING APPARATUS.

APPLIcATloN man MLM. 1911.

Patented Jan. 22, 1918.

3 SHEETS-SHEET 3.

lie" a Q WITNESSES ATTORNEY .mamaria i. sinrrn, or nnnnrn'enarr, wnsnrrmrorr.

LOGG-ING F l't Specification of Letters Patent.

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l Application flied April 2t, 191'?. aerial. No. 164,213.

To all whom t may concern.'

Be it known that l, InASMr'rnr, a citizen of the United States, residing at Bellingham, in the county of Whatcom and State of Washingtom have invented new and useful 'Improvements in Logging Apparatus, of

which the following is a specificatlon.,v A This invention relatesto logging apparatus Vof that class in which cable ways are employed for the transportation of logs from `place to place. j.

' Une object of the present invention is to simplify and improvethe construction and operation of the carriage which is employed for conveying the loa I A further object of the invention isto simplify and improve the construction of the block operating .in connection with the carriage as well as the means for supporting the load from the block.

A still further object of the invention is to simplify and improve the arrangement' of the lines or cables whereby moved and controlled.

With these and other ends in view which will readily appearas the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, Aalterations and modifica` tions within the scope of the claims may be'v resorted to when desired.

lin the drawings: Figure 1 is a perspective view illustrating one form of the invention.

Fig. 2 is a perspective view illustrating a modified arrangement of the parts constituting the invention.

Fig. 3 is a side elevation of the carriage and block, portions of one-side wall having been broken away. y

Fig. A is` a transverse sectional view taken on the line 4-1 in Fig. 3.

Fig. 5 is a sectional detail view of the block taken on the line 5-5 in Fig. 3.

Fig. 6 is a perspective view illustrating the construction and the conjoint operation ofthe block and the choker.

'-,Wheels 17, 17 at the carriage \acters of reference.

The carriage C is composed of side walls 15 whlchare suitably connected together and spaced apart by bolts 16, some of which form axles for the sheaves or supporting the upper corners of the carriage and for an additional sheave 18 adjacent to the lower edge and relatively near what is regarded as lthe front end of the carriage. lEach side wall is provided at the lower edge and about midway between its front and rear ends with a recess 19 ad- ]acent to which is pivoted a locking member 20 havlng a bill 21'which isA adapted to` extend across the opening formed by therecesses 19 for engagement with the bail 22 of the block 23. The locking member is also formed with a head portion 24: the tendency of which is to tilt the locking memberv gravitationally, thereby withdrawing the bill 21 from the opening 19 and placing itself across said opening in the path of the bail 22 so that by the entrance of said bail into the opening 19, the head portion 24 will be engaged, thereby tilting the locking members to its normal closed position wlth the bill 21 lying across-the opening 19 and retaining the block in engagement with the carriage. In this position the locking member will be secured by means of a dog 25 pivoted at 26 and having a notch 27 adapted for engagement with a tooth 28 formed at the apex of the head 24. The dog 25 has a nose 29 that extends rearwardly in the path of a beveled lug 30 formed on an unlocking .has at its front end a hook- 32 that extends beyond the front end of the carriage. The rearward end of the unlocking bar also extends rearwardly of the carriage fc-r a purpose to be hereinafter described. The unlocking bar, furthermore, has, about midway between its ends, a pin 33 that extends through a slot 34 in one of the side walls of t-hecarriage, said pin being connected with a retracting spring 35' the tension of which isv exerted to move the unlocking bar in a rearward direction to an extent limited bythe length of the slot 311 when the beveled lug 30 will be held out of engagement with the nose of the dog 25. Movement of the unlocking b ar in a. forward direction against one of the side Walls are keepers 36, 37

in which are journaled sheaves or pulleys 38, 39, said pulleys ,being located relatively f near the lower, rear and front corners of the v carriage, respectively. Pivoted externally on the same side wall 15 is a trip member 40 having a flange 41 provided with a notch 42, said'trip `member being also provided with arms 43 and 44 receiving between them the Vpin 33'of .the unlocking bar 31. The arm 43 Lisv utilized as a tripping arm as will hereinvafter appear; the arm 44 is in the nature of va stop member for limiting the swinging vmovement of the trip member 40 m one d1- rection.

The carriage is supported by the wheels 1.7

' i on the sky line which in the several figures 1s v. 215

designated by S and which, according to the nature of the work to be performed as, well as the locality where the work is to be di ne,

` may be arranged either horizontally or in an vao inclined position.

In Fig. 1 of the drawings where the invention has been shown applied for the purpose of yarding logs, the skyline has been shown arranged in a horizontal position, said sky line being connected with supports known asthe front and back spar trees 45 and 46, said spar trees being reinforced by guy lines 47 in the customary manner. A donkey engine 48 having three drums a, b and 0, has been diagrammatically indicated. A haul-out line 49 connected with the rear end of the carriage is guided over pulleys 50 and 51 at the head and foot of theback spar tree and thence along the ground to the drum a of the engine. A haul-in line or snubbing line 52, likewise connected with the carriage near the rear end thereof is guided beneath the pulley 53 in the block 23 and over the sheave 18 in the carriage to the drum b of the engine. Connected with the snubbing line at 54 is one end of a slack pulling line 55, said line being guided over the external sheaves 38, 39 of the carriage and through the notch 42 of the trip member 40, the other end of the slack pulling line being connected with the drum c provided with a plurality'of stops 56 placed closely together for engagement with the trip member. It may be stated that a single stop member 56 will usually answer the purpose, but a plurality are preferably used as a precaution in case one of them should miss effective engagement with the trip member. I

It will be seen that by the arrangement here shown, the movement of the carriage along the sky line may be eectively controllcd by the lines 49 and 52. While the carriage is being held stationary in any po sition, the drums and c ,may be operated to respectively unwind the haul-in line 52 and to wind the slack pulling line 55. When the stop members 56 pass in engagement with the trip 40, the latter will be operated to effect the disengagement of the locking member 20 from the block 23 which will thus be permitted to drop by gravity for the pur pose of discharging or picking up a load, as the case may be. By reversing the rotation of the drums I) and c, the block will again be hoisted into engagement with the carriage, with or without a load, and the carriage may now be moved in the desired direction on the sky line by proper operation of the drums a and b.

In Fig. 2 of the drawings the sky line has been shown in an inclined position for the purpose of transporting the load gravitationally. In this arrangement thesheaves 38 and 39 of the carriage are not utilized and only a single snubbing line, here designated by 57 is used, the same being connected with the carriage at 58 and carried beneath the pulley 53 of the block and over the sheave 18 of the carriage to a drum 59 of the engine. On the sky line, near the high end thereof, is secured a clamp 60 on which is swingingly mounted a catch member 61 having a bail or keeper 62 for engagement with the hook 32 of the unlocking bar 31 of the carriage. The catch member 61 is gravitationally held in position for engagement with the unlocking bar by means of a weight 63 and a trip line 64 is connected with said catch member. In this arrangement the apparatus is intended to be utilized for roading the logs from `the yarding place. The empty carriage is drawn up the sky line from the low to the high end of the latter by proper rotation. of the drum 59 until the hook 32 of the unlocking bar engages the keeper 62 of the catch member. By releasing the tension of the snubbing line, the carriage will be permitted to travel gravitationally down the sky line with the effect of pulling the unlocking bar, which still remains in engagement with the catch member, in a forward direction, thus unlocking the block and permitting the latter to descend by unwinding the snubbing line from the drum 59. When the load has been applied to the block, the latter is hoist led into engagement with the carriage, after which, by means of the trip line 54, the catch member 61 is tilted to disengage the keeper 62 from the hook of the unlocking bar, after which the carriage with the load is permitted to travel gravitationally down the sky line until the unloading place is reached. At this point, a stop member 65 is clamped on the sky line for engagement with the pro jecting rearward end of the unlocking bar which is thus forced in a forward direction,

lnetgear thereby releasing the block from the carriage for the purpose of discharging the load.

To facilitate the discharge of the load` when desired, the block is provided at its lower end with a pivotally supported hook 66 the bill of which may be engaged by a pivoted keeper 67 having a laterally 'extending finger 68. Swingingly connected with the carriage is a yoke 69 the bridge portion of which is bent so as to resent a curved ange 70. rllhe choker line l is provided at one end thereof with a loop or eye 72 for engagement with the supporting `hook 66 which latter may be locked in engagement with the keeper 67 so as to support the hook in load-engaging position. The other end of the choker line carries a hook 73 which may be placed in engagement with the body of the choker line after the load has been encompassed thereby. lt is obvious that when the choker line is tensioned by the lifting of the block, the load will be held securely. The choker line is connected with the block by a retaining line 74. As a load is being lifted, the linger 68. of the latch or keeper 67 will engage the curved liange 70 of the yoke 69 which latter will thus swing aside without affecting the position of the latch. -When, on the other hand, the block is lowered from the carriage, the finger 68 will engage the bridge piece of the yoke and the catch or keeper 67 will thus be lifted out of engagement with the hook 66 which latter will swing downward, releasing the loop or eye 72 of the choker line,y edecting disengagement of the latter with respect to the hook 73 and permitting the load to drop accidentally, the choker line being retained in connection with the block 23 by the retaining line 74. rlFhe load will thus'be released quickly and effectivelyat the desired point without danger to the workmen and the choker line will remain connected with the block for further use.

Having thus described the invention, what is claimed as new is:

1. A carriage having side walls provided with recesses in their lower edges, a pivoted locking member having a bill adapted to extend across the opening thus formed, said locking member having a head provided with a tooth, a dog having a notch engaging said tooth, and a projecting nose, andv a longitudinally slidable unlocking bar having a beveled lug for engagement with the dog.

2. A carriage having side walls provided with recesses in their lower edges, a pivoted locking member having a bill adapted to extend across the opening thus formed, saidlocking member having a head provided with a tooth, a dog having a notch engaging said tooth, and a projecting nose, and a longitudinally slidable unlocking bar having a beveled lug for engagement with the dog,

will;

said unlocking bar being spring actuatedin a non-engaging direction with respect to the dog.

3. A carriage having side walls provided with recesses in their lower edges, a pivoted 7c. locking member having a bill adapted to extend across the opening thusv formed, said locking member having a head provided with a tooth, a dog having a notch engaging said tooth, and a projecting nose, and a longitudinally slidable unlocking bar having a beveled lug for engagement with the dog, said 'unlocking bar being spring actuated in a non-engaging direction with respect to the dog, and said vunlocking bar being extended forwardly and rearwardly of the carriage and provided with a hook at its front en A. A carriage having side Walls provided with recesses in their lower edges, a pivoted locking member having a bill adapted to extend across the opening thus formed, said locking member having a head provided with a tooth, a dog having a' notch engaging said tooth, and a projecting nose, and a longitudinally slidable unlocking bar having a beveled lug for engagement with the dog, said unlocking bar being spring actuated in a. non-engaging direction with respect to the dog, said unlocking bar being provided with a pin extending laterally through one side wall of the carriage, said side wall being provided with/a slot for the passage of said pin, and said side wall of the carriage being provided with a pivoted trip member having a notched Harige and upwardly extending arms receiving between them the laterally extending pin of the unlocking bar.

5. A carriage ofthe class described having side walls provided with recesses at their m5 lower edges, a pivoted locking member having a bill adapted to extend across the recess thus formed, and a weighted head adapted to gravitationally retract the bill and to occupy an obstructing position across the ma opening, said head having a tooth at its upper end, a pivoted dog having a notch engaging said tooth and a projecting nose, a slidably supported spring retracted unlocking bar having a beveled lug adapted to en- 115 gage the nose of the dog, and means for actuating the unlocking barin combination with a block having a bail adapted for engagement with the bill of thev locking member, and means for hoisting said block in 12o engagement with the carriage.

6. A carriage of the class described having side walls provided with recesses at their lower ed es, a gravitationally operable locking mem er having a bill adapted to extend 126 across the opening thus formed, means for securing and for unlocking the locking member, including a. dog directly engaging the locking member and the slidable spring actuated unlocking bar, and means for triptu ping the unlocking bar, said means including a. trip member pivoted externally on the carriage and having a notched flange and upwardly extending arms, a pin extending laterally from the unlocking bar through a side Wall of the carriage, said side Wall being provided with a slot for the passage of the pin and said pin being received between the arms of the trip member, pulleys supported externally on the carriage, and a slack pulling line guided over said pulleys and having stop members forengagement with the trip, said line being guided through the notch in the flange of said trip.

7. A. carriage having a block supporting locking member, means for unlocking said locking member including a trip pivoted externally on the carriage and having a notch, a sky line on which the carriage 1s supported, sheaves supported for rotation externally Within the carriage, a block h aving a bail for engagement with the locking member, a haul-in line connected with the carriage and guided through the block and over the sheave Within the carriage to a Winding drum, a haul-out line connected with nase-,eea

the carriage and guided over guiding means to -a Winding drum, and a slack pulling line connected with the hauling line and guided over the external sheaves of the carriage and through the notch in the pivoted trip meniber to a Winding drum, said slack pulling line being provided with trip engaging stops.

8. A carriage having side walls provided with recesses combining to form an opening, a locking member having a bill adapted to be disposed across said opening, a yoke swingingly connected with the carriage and having a curved flange at its lower portion, and a block having a swinging supporting hook and a keeper for said hook, said keeper being provided With a laterally extending finger, in combination with a choker line having a loop engaging the supporting hook, a retaining line connecting the choker line with the block, and means for hoisting the block in engagement with the locking member of the carriage.

Tn testimony whereof I aiix my signature.

IRA SMITH.

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