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Патент USA US2121134

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June 21, 1938..
2,121,134. '
Filed Nov. 15, 1957
5 Sheets-Sheet l
June 21, 1938.
‘2,121,134 ‘ I
Filed Nov. 15, 1937
5 Sheets-Sheet 2
June 21, 1938.
Q Tommi-R‘ I
Filed Nov. 15, _1937
5 Sheets-Sheet 3
In venior
622% Warner”
By’éwam ?zmlé"
Patented June 21, 1938
Carl Torner, Olympia, Wash.
Application November 15, 1937, Serial No. 174,703
1 Claim.
(Cl. 212-292)
My invention relates to block and tackle rigs
for logging operations and more particularly to
carriage ‘locking and releasing devices for the fall
block carriages of such rigs.
As explanatory, in hauling logs uphill it is the
practice to use a rig includinga carriage mounted
on an overhead cable line, called the sky line,
running from a ?xed point uphill to a vertical
spar, tree, or-the like, the carriage being pulled
10 : by a cable, called the main line, attached there
to and reeled up- on a winch, and the logs suspend
ed, or hooked, in a loop of the cable by means of
a pulley, called a fall block. As will ‘be under
stood the log is dropped, or let loose, at any de
16 1 sired point by slacking up on the ‘main line to
lower the fall block.
The object of ‘my invention is to equip a rig
of this character with ef?cient means for locking
the carriage to the sky line against retrograde
20 movement in any selected position along said
line so that logs may be dropped at any point
along the line as desired.
Another object is to provide means for the pur
pose above set forth adapted to unlock the car
25 riage from the sky line by pull exerted on the
main line.
To the accomplishment of the above, and sub
porated in a rig in which I designates the usual
vertical spar, pole, or tree, supporting the over
headline, or skyline, 2 to- incline upwardly there
to by means of the usual jack 3 secured to said
spar, as ‘at 4, the line 2 having its opposite ends
suitably ?xed adjacent to the ground in a manner
immaterial to a proper understanding of the in
vention and therefore not illustrated in the draw
ings. The carriage 5 comprises a pair of side
plates ‘6 straddling the sky line 2 and suspended
therefrom by means of a pair of sheaves l ro
tating between said plates 6 on arbors 8 having
their ends suitably mounted in said plates. Rods
El and spacing sleeves l0 secure the {plates 6 to
gether. The main line II is connected at one 15
end, as at ‘I2, to the carriage 5 below the sky line
2, as by stud l3, and trained over the bull block
M which is a?ixed to the spar I, adjacent the jack
3, by a ring 15 surrounding said spar and a swivel
IE on said block looping around the ring. The
other end of the main line II is attached to a
winch or hoist not shown. The fall block ll
runs in a slack, or loop, between carriage 5 and
the bull block l4 and carries a cable I8 for the
attachment of the logs thereto.
ordinate objects presently appearing, a preferred
dropped at any predetermined point by slacking
embodiment of my invention has been illustrated
30 in the accompanying drawings, set forth in detail
in the following description, and de?ned in the
up on the main line and thereby lowering the
claim appended hereto.
In said drawings:
Figure 1 is a fragmentary view in side eleva
35 tion illustrating a rig of the character indicated
equipped according to my invention,
Figure 2 is a similar view drawn to an enlarged
scale and with parts shown in section illustrating
In the operation of the described type of rig
the logs are hauled up towards the spar l to be
fall block I‘! and logs.
According to my invention, a bumper I9 is
slidably mounted on the sky line 2 between the
carriage 5 and spar I and comprising a cylindri
cal block 2| of hard wood having an axial bore 20
through which the sky line 2 extends and which 35
is or" a proper size to frictionally grip said line.
The described block 2| is enclosed by a substan
tially cylindrical sheath co-extensive in length
the operation of the invention,
with the block 2| and comprising a pair of com
Figure 3 is a fragmentary view in horizontal
section taken on the line 3-3 of Figure 4 looking
plemental semi-cylindrical sections 23 and 24 40
hinged together as at 25 along the bottom of the
block 2! and having opposed ?anges 26 extending
along the top of the block 2| bolted together as
Figure 4 is a view in vertical transverse section
taken through the carriage on the line 1l—ll of
45 Figure 2 looking in the direction indicated by the
Figure 5 is a view in transverse section taken
on the line 5--5 of Figure 2 and illustrating de
tails of the bumper,
Figure 6 is a view in perspective of a guide
block forming part of the bumper, and
Figure 7 is a view in perspective of a locking
Referring to the drawings by numerals, my
55 invention has been illustrated therein as incor
at 21 whereby the sections 23 and 24 are clamped ‘
around said block 2|. The ?anges 26 are pro
vided with ears 2'! apertured, as at 28, for the
passage of a cable 29 therethrough by means of
which the bumper is secured to the spar l against
movement away from the latter. The ends of the
sections 23 and 24, at the carriage end of the 50
bumper, are out-turned laterally to provide a
?ange 3|] ‘extending around the sheath l9. Piv
otally mounted intermediate its ends between the
plate 6, as at 3|‘, is a locking dog 32 vertically
swingable on its pivot 3| to engage a hooked end
33 thereon with the ?ange 30 and having a cam
edge 34 for cooperation with said ?ange to cam
said hooked end downwardly. The hooked end
33 is normally urged upwardly towards the ?ange
in the proper direction to effect downward move
weight 35 straddling the lower edges of the car
riage plates 6 and swingably mounted on the
aforementioned stud I3. The weight 35 is oper
ment of the hooked end 33 of the dog 32 away
from the ?ange 30 and thereby unlock the car
riage 5 from the bumper l9 as will be clear.
My invention will, it is believed, be clearly
understood from the foregoing without further
atively connected to the end of the dog 32, op
30 by means of a bifurcated counter-balance
10 posite the hooked end 33, and by means of a link
33 pivoted to said weight, as at 31, and to said
end of the dog 32 as at 38. One of the before
mentioned spacing sleeves l0 limits upward move
ment of the hooked end 33 of the dog 32.
to take up all slack therein said main line may
be engaged with said weight to rock the latter
Referring to the operation of the invention, the
bumper I9 is located along the sky line 2 in any
position in which it is desired to drop the log,
or logs, and secured in location against move
ment away from the spar by means of the cable
20 29. As the carriage 5 reaches the approximate
desired position the hooked, end 33 of the look
ing dog 32 is cammed downwardly by the cam
edge 34 engaging with the ?ange 30 and against
the action of the counter-balance weight 35 to
25 snap under and behind said ?ange under the
in?uence of said weight upon further movement
of the carriage towards said position. As the
carriage 5 proceeds further it engages the bump
er l9 and is retarded thereby so that the operator
3.0. is thus advised that the proper position to unload
has been reached. The main line ll may now
be slackened to lower the fall block I‘! and log.
As will be obvious retrograde movement of the
carriage 5 is prevented past the selected position
by the described locking coaction of the locking
dog 32 and ?ange 30. The Weight 35 is so ar
ranged that by pulling up on the main line H
Manifestly the invention as described is sus
ceptible of modi?cation without departing from
the inventive concept and right is herein re
served to all such modi?cations falling within
the scope of the subjoined claim.
What I claim is:
In a rig of the class described, the combination
with an overhead inclined cable, an upright sup
porting the cable at the high end thereof, and a
carriage traveling on the cable, of means for look
ing the carriage to the upright against retro 20
grade movement including a bumper member on
the cable at the high end thereof and anchored
to the upright, a pivoted locking dog on said car
riage vertically movable into and from interlock
ing relation with said bumper, a weight pivoted 25
on the carriage and operatively connected to the
dog for gravitational movement to overbalance
said dog toward interlocking relation, said weight
being swingable against the in?uence of gravity
to move the dog from interlocking relation, and 30
a pull line connected to the carriage to propel the
same toward the high end of the cable and en
gageable with the weight under the pull exerted
thereagainst to swing the latter against the in?u
ence of gravity.
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