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Патент USA US3018748

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Jan. 30, 1962
3,018,738
E. O. NAUD
SKYLINE CARRIAGE LOCKING MEANS AND RELEASE THEREFOR
Filed June 20, 1960
2 Sheets-Sheet l
INVENTOR
ERNEST O. NAUD
5V
Jan. 30, 1962
3,018,738
E. O. NAUD
SKYLINE CARRIAGE LOCKING MEANS AND RELEASE THEREFOR
Filed June 20, 1960
2 Sheets-Sheet 2
INVENTOR
ERNEST
O- NAUD
57 “Mac/“6%,?
Uted States
atent
ice
3,613,738
Patented Jan. 30, 1962
1
2
3,018,738
several carriage parts above referred to de?ne a tapered
longitudinal groove 34 through which the cable 10 extends
and journalled between the plate 26 and ?ange 32 so as to
SKYLINE CARRIAGE LOCKING MEANS AND
RELEASE THEREFOR
Ernest 0. Naud, Bowen Island, British Columbia, Canada
Filed June 20, 1960, Ser. No. 37,117
7 Claims. (Cl. 105—151)
v ride upon said cable are a pair of tandem sheaves 35.
Beneath the web 28 a pair of sheaves 38 are journalled
between the carriage side plates and trained over one of
said sheaves is a main line 40 which extends to a suitable
winding engine. The line 40 is ?tted with ‘a fall block 41
which is adapted to be lowered to the ground to pick up
My invention relates to improvements in skyline oar
riage locking means and release therefor.
An object of the invention is to provide means whereby 10 the log load. In its raised position the fall block is locked
a load supporting carriage, particularly of the type used
within the carriage by means of latching arms 42 and
in the lo ging industry, may be securely locked to the
obviously when the main line is wound in with the fall
cable track upon which it runs so that it cannot become
block raised, the carriage will be moved along the skyline
accidentally dislodged therefrom.
10 towards the winding drum. A haul back line 43 is se
Further objects are to provide means which will auto
matically release the locking mechanism as the carriage
15 cured to either the carriage 12 or the fall block 41 so that
the carriage may be moved along the skyline away from
the winding drum. The mechanism for raising and latch
moves past a hanger supporting the skyline ‘and to ensure
that said mechanism is released and reset quickly and
ing the fall block does not form an essential part of the
easily without the necessity of decreasing the normal
present invention and detailed description of this portion
travelling speed of the carriage.
Referring to the drawings:
FIGURE 1 is a front elevation showing the sky-line sup
ported by a hanger with the carriage on the skyline.
20 of the carriage structure is not deemed to be necessary.
Secured to the vertical ?ange 32 adjacent each end
of the carriage is a guide 47 which is ?tted with vertical
ly spaced rollers 48. Mounted in the guide is a plunger
FIGURE 2 is a side elevation of the hanger.
49 the lower end of which is normally disposed substan
FIGURE 3 is ‘a section taken on the line 3—3 of FIG 25 tially in the same honzontal place as the upper edge 51 of
URE 2.
the carriage side plate 7.7. The outer face of the plunger
49 is ?tted with forwardly projecting arms 53 which are
FIGURE 4 is a fragmentary perspective view of the
hanger saddle and showing an end portion of the cam
provided, at their outer ends, with aligned bearings 54 and
track.
journalled in said bearings are the trunnions 55 of a hear
FIGURE 5 is an enlarged section taken on the line 5——5 30 ing block 56. An opening 58 is formed in the bearing
of FIGURE 1.
block to extend through from the blocks vertical inner face
FIGURE 6 is an exploded perspective view showing the
59 to its arcuate outer face 60 and on the top of said
block a lug 61 is formed. A cam wheel 63 having a dished
plunger and the guide therefor.
centre portion 64, is journalled in the block '56 with its
FIGURE 7 is a sectional plan taken on the line 7—7 of
FIGURE 5.
35 axle 65 being received in the opening 58. A spring 66
is interposed between the lower end of the plunger 49 and
FIGURE 8 is a perspective view of the bearing block
for supporting the cam wheel.
the wheel, see particularly FIGURE 5. The plunger 49
has a horizontal opening 67 which normally registers with
FIGURE 9 is a plan View, on an enlarged scale, oi’ look
ing pin.
a recess 68 formed in the vertical ?ange 32. A locking
FIGURES 10 and 11 are elevational views, part in sec 40 pin 70 is slidably mounted in the opening 67 and the pin
has a stop collar 71 which bears against the plunger when
tion, showing the sequence of movements as the carriage
the inner end of the said pin is lodged within the recess
moves across the skyline hanger.
68. The pin 70 has a forked outer end 73 which is pro
In the drawings like characters of reference indicate
vided with a hinge 74 and a pivot pin 75 serves to connect
corresponding parts in each ?gure.
The numeral 10 indicates an overhead cable or skyline 45 the end 73 to the lug 61 on the bearing block 56. A
spring 77 is secured as at 78 to the ?ange 32, see FIG
which is strung between two widely spaced anchorages so
URE l, and the ends 79 of the spring are connected to
as to provide a path of travel for a carriage 12. At suita
the plungers 49 as at 80 so as to hold the peripheries
bly spaced intervals of its length the cable 10 is supported
of the wheels 63 in resilient contact with the upper edge
by hangers 14, which are secured to the tops of spar trees
51 of the plate 27.
or other towers, not shown.
As the carriage 12 is moved along the cable 10 by either
Each hang-er 14 consists of a reversely curved arm 15
the main or haul back lines said cable is ?rmly locked
which is ?tted at its lower end with a horizontally extend
within the groove 34 by the plungers 49 which are held
ing shaft 16. An elongated saddle 18 is rockingly
against vertical movement by the locking pins 70. How
mounted on the shaft 16 and is provided on its upper edge
with a longitudinal groove 19 in which the cable 10 is 55 ever in order to clear the shaft 16 of the hangers 12 it
is necessary to unlock and raise the plungers and this is
seated. The saddle 18 is fitted with \a cam track 20 which
done in the following manner. As each wheel in turn
is preferably formed by a band of resilient metal having a
comes into contact with the leading end 22 of the cam
centre portion 21 disposed in close proximity to the top
track 20 it rides up on to said track and in so doing de
of the shaft 16. On each side of the shaft 16, the cam
track 20 falls towards the downwardly curved end 22 of 60 presses the free end of the resilient metal band. The
initial shock of the wheel engaging the track is absorbed by
the metal band. Adjacent each end 22 of the cam track is
the band and the wheel rolls therealong to engage the oif
provided with an oiiset portion 23 which, as shown in
set portion 23. The offset portion rocks the Wheel about
FIGURES 4 and 10, slopes downwardly from the free
the trunnions 55 to the inclined position shown in FIG
edge of the bland towards the saddle 18.
URE 10 whereupon the locking pin 70 is withdrawn from
The cable 10 supported by the hangers 14 provides a 65 the
recess 68. While still in the inclined position the wheel
track along which the skyline carriage 12 is adapted to
rolls up on to the centre portion 21 of the cam track
travel. The carriage is provided with spaced side plates
and in so doing exerts a lifting force on the plunger which
26 and 27 which are connected intermediate their height
raises it to the position shown in FIGURE 11. In the
_ by a web 28 and above said web the plate 26 is offset as at 70 raised position the plunger and the wheel carried there
29. A top plate 31 is carried by the side plate 26 and de
pending from the top plate is a vertical ?ange 32. The
by are disposed above the shaft 16 of the hanger and said
shaft is free to traverse the groove 34 without obstruc
3,018,738
A
3
proximity to the upper edge 51 of the carriage side plate
4. Structure as claimed in claim 3 wherein said cam
track has an offset portion adapted to rock the cam mem
27 so that even with the wheel in raised position the car
ber about the pivot pin.
riage cannot become dislodged from the skyline or the
hanger saddle. As the Wheel rolls from the portion 21
to the trailing end of the cam track the spring 77 coacts
with said track to return the plunger to its original posi
5. In a carriage adapted to travel along a skyline sup
ported by a hanger, said carriage having a side mem
ber provided with a groove through which the skyline
tion.
The cam track at this time is disposed in close
tion extending across the groove. The wheel on leaving
the trailing end of the track is swung by the action of the
spring 66 back to a vertical position and this movement
enters the locking pin 70 into the recess 68 so that the
plunger is again locked against movement vertically of
longitudinally extends, a guide carried by the carriage
side member, a plunger slidably mounted in the guide
and normally extending across the groove, said plunger
having an opening, a locking pin slidably mounted in the
opening, said carriage side member having a recess in
which the inner end of the locking pin is normally re
the ?ange 32. It will be noticed that the lifting force
ceived, a cam member, means pivotally connecting the
cam member to the plunger, means operatively connect
applied by the cam track to the wheel is exerted substan
tially in the same vertical plane as the plunger so that 15 ing the locking pin to the cam member and a cam track
there is no likelihood of the plunger binding in its guides.
carried by the hanger adapted to coact with the cam mem
ber as the carriage passes the hanger whereby to with
What I claim as my invention is:
1. In a carriage adapted to travel along a skyline sup
draw the locking pin from the recess and actuate the
ported by a hanger, said carriage having a side member
plunger.
provided with a groove through which the skyline longi 20
6. Structure as claimed in claim 5 and spring means
urging the locking pin into engagement with the recess.
tudinally extends, a guide carried by the carriage side
7. In a carriage adapted to travel along a skyline sup
member, a plunger slidably mounted in the guide and
normally extending across the groove, means for locking
ported by a hanger, said carriage having a side member
provided with a groove through which the skyline longi
the plunger against movement relative to the guide, a
cam member, means pivotably connecting the cam mem
ber to the plunger, means operatively connecting the cam
25 tudinally extends, a guide carried by the carriage side
member, a plunger slidably mounted in the guide and nor
mally extending across the groove, said plunger having an
member to the plunger locking means and a cam track
carried by the hanger adapted to coact with the cam mem
opening, a locking pin slidablyv mounted in the opening,
ber to release the locking means and actuate the plunger.
said carriage side member having a, recess in which the
2. Structure as claimed in claim 1 and resilient means 30 inner end of the locking pin is normally received, said
urging the plunger to normally extended position.
3. In a carriage adapted to travel along a skyline sup
plunger having transversely spaced arms, a pivot pin sup
ported by the arms, a bearing block rockingly mounted
ported by a hanger, said carriage having a side member
on the pivot pin, a cam member journalled in the bear
provided with a groove through which the skyline longi
ing block, means operatively connecting the locking pin
tudinally extends, a guide carried by the carriage side 35 to the bearing block, a spring urging the locking pin into
member, a plunger slidably mounted in the guide and nor
engagement with the recess and a cam track carried by
mally extending across the groove, means for locking the
the hanger adapted to be engaged by the cam member
plunger against movement relative to‘ the guide, an arm
as the carriage passes the hanger.
extending from the outer face of the plunger, a pivot pin
References Cited in the ?le of this patent
supported by the arm and extending parallel to the longi
UNITED STATES PATENTS
tudinal axis of the carriage, a cam member mounted on
the pivot pin, means operatively connecting the cam
1,075,600
Nelson ______________ __ Oct. 14, 1913
member to the plunger locking means and a cam track
carried by the hanger adapted to be engaged by the cam
member as the carriage passes the hanger.
1,161,695
1,237,067v
1,497,681
La Forest ____________ __ Nov. 23, 1915
Lawless ______________ __ Aug. 14, 1917
Gutenkunst __________ __ June 17, 1924
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