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Jan. 7, 71947.
c. THQORSEN
‘ 2,413,895
OAHLOCK _
‘Filed Oct. 2.4, 1945
L
w
INVENTOR.
Gal-afar: Thom-ea
Afromvsy
Patented Jan. 7, 1947
‘2,413,895
' UNITED STATES PATENT‘ OFFICE
2,413,895
OARLOCK
Carsten Thor-sen, Seattle, Wash.
Application October 24, 1945, Serial No. 624,253
3 Claims.
(01. 9-26)
1
This invention relates to oar-locks, and par
ticularly to oar-locks for noiseless operation by
inexperienced users.
In the use of ordinary oar-locks particularly
by inexperienced operators, the oar-locks fre
quently become separated from the oars ‘and
boats and are lost either overboard, or mislaid
elsewhere. Beginners also frequently lose con
trol of the oars when used with ordinary care
With these and other objects to be hereinafter
stated I1 have illustratively exempli?ed my in
vention by the accompanying drawing of which:
Figure 1 represents a side elevation of the
oar-lock in position on the gunwale of a boat,
‘ and an oar in place.
Figure 2 is an enlarged top plan of the oar
lock assembly and a fragment of an oar shaft in
full lines, and dotted lines showing lateral move
looks, as the car handles become twisted in the 10. ment for the car.
’
hands and if the blades of the cars are beneath
Figure 3 is an enlarged side elevation of the
the surface of the water when the handles are
assembly and a fragment of an oar shaft in full
twisted or turned partially around, the blades
lines, and dotted lines showing vertical move
are then dif?cult to raise from the water in the
ment for the oar.
usual manner for taking a forward stroke‘. Such 15
Figure 4 is an enlarged fragmentary View of
di?iculty with the oars leads to conditions known
parts in section, taken on line 4-4 on Figure 3.
as being “swamped,” or “catching a crab,” and
may be dangerous in rough water, or prevent the
regular movement of the swamped car, which
sent like parts.
whereby the ordinary difficulties above stated and
others, will be eliminated.
ing and for sustaining the block securely
against the shaft, and the inner face of the
Like characters on the different ?gures repre
‘
The letter A represents‘ the loom or shaft of
sometimes causes loss of a race in competitive 20 any oar, with the usual blade B, on the extended
use of a boat. Again in the use of ordinary
outer portion thereof. The letter C represents
swivel pins for oar-locks, in different sized
the side wall or shell of any row boat, with a re
sockets found on different boats, the pins must be
inforcing inner strip which with the side wall
small enough for use in small sockets, and may
forms the usual gunwale D.
then be too loose in larger sockets, or if made .25
Numeral 5 indicates a reinforcng block, with
large enough for a good ?t in the larger sockets ‘ ' the outer side concaved as at 5’ to conform with
will either bind in a smaller socket or cannot
the convex surface of the oar shaft, while the
be entered therein; and when the pins ?t too
inner side of the block is flattened perpendicu
loosely in the sockets, vibration and noises result.
larly for a bearing face 5", for a corresponding
Even in case of proper ?ts of the pins in sockets 39 ?at bearing face ‘I on cheek plate 6. A bolt 8
when. ?rst assembled, the ordinary friction soon
is loosely disposed‘ through holes through the
causes wear and reduces the sizes of the pins or
block and plate, and the outer portion of the
increases the sizes of the sockets, and the noises
bolt is attached through the oar shaft at right
and vibrations follow.
‘
angles to the blade, with a head 8’ binding
It is therefore an object of this invention to 35 against the shaft, for rigidity therethrough, and
provide an oar-lock and assembly therefor,
a nut 9 on the inner end of the bolt for adjust
Particular objects of the invention, are to pro
vide a swivel pin, with the lower end thereof ta
block and bearing face of the cheek plate in ro—
40 tatable and operative relation against each other,
to facilitate the lowering and raising of the
pered, to ?t snugly in sockets of various sizes
blade in and out of the water in positive vertical
without vibration, the upper portion to be
straight for a pintle on which is rotatably mount
positions at all times, and to thus prevent the
blade from becoming accidentally “swamped” or
ed a cheek plate with a bearing face perpen
dicularly disposed, together with a block pro 45 retained beneath the surface of the water, and
vided with a perpendicular bearing face for co
particularly beneath high waves. A jamb nut
operation against the cheek plate, and the op
ii’ is preferably positioned over the nut 9 to pre
vent any change in the adjusted positions of the
posite side of the block concaved longitudinally
for ?tting against and reinforcing the shaft of an
plate and block, whereby excessive looseness
oar, together with a connecting bolt horizontally 50 would cause vibration and noise. The block 5
?xed through the shaft and’ rotatably disposed
and plate 6 freely rock against each other on the
through both the plate and block, whereby the
bolt 8 for a pivot, when the shaft and the blade
blade of the car is sustained vertically and may
of the car are to be lowered and raised in the
be easily and positively raised and lowered, and
usual manner for rowing.
moved forward and backward for the usual 55
A boss or hub H1 is preferably formed integral
strokes thereof for rowing.
on the inner face of the plate 6 which is provided
2,413,895
4
with a perpendicular hole II for rotatable dis
position over a straight perpendicular swivel pin
or pintle 12 for lateral rotation, and a shoulder
M at the base of the pintle supports the plate
6 thereon. The base is extended downward with
tapered shape l5 of suitable size for ?tting into
the sockets IQ of any ordinary or special socket
strap H, which may be attached to the gunwale
by screws through holes 11', as usual. Eyes I3,
tened perpendicularly for a bearing face, a block
having one side thereof ?attened perpendic
ularly for a face for operating against the face
of the plate, and the opposite side of the block
being concaved longitudinally to conform with
the rounded shaft of an oar, said block being
relatively long for reinforcing the car and for
distributing stress applied thereto when row
ing, a bolt horizontally mounted through the car
and I6 through the top of the pintle and through 10 shaft at right angles to the blade and extended
through the block and plate for a pivot pin to
the bottom of the base respectively are provided
maintain the face of the block against the cheek
plate in rocking disposition to facilitate vertical
the plate 6 may be prevented from accidental
displacement from the pintle, and the tapered
movements of the oar blade into and from the
base from accidental displacement from the 15 water, for rowing.
2. A device for oar-locks including a swivel
socket, respectively. By removal of the upper
pin having the lower portion tapered for ?tting
snap the oar may be removed and the pintle left
for hooks or snaps 20, on a chain 2|, whereby‘
into sockets of various sizes of various boats,
in fixed position on the boat, or the lower snap
the upper portion of the pin being extended
may be released and the pintle removed with
the car from the boatfor safe keeping.
20 perpendicularly with straight bearing sides for
a pintle, a cheek plate rotatably mounted on. the
Itwill be understood that the tapered base
pintle and having one side thereof ?attened
for the pintle or swivel pin, may be used in con
perpendicularly for a bearing face against a
nection with the usual sockets of various sizes
block, a block attached along one of its sides to
on various boats, as the lower end of the taper
is preferably small enough to enter any ordinary 25 the shai't of an car and having the other side
thereof ?attened perpendicularly for a bearing
socket sufficiently to remain in the pintle and as
face against the plate, an axle extended from the
sembly in suitable position. The tapered base
block horizontally and pivotally through the
so becomes ?xed in relation to the socket, and
cheek plate for connecting the ear to the pin
no wear follows the use of the car thereover as
the plate rotates freely on the pintle for lateral 30 in operative relation to facilitate both lateral
and vertical movements of the oar.
movement of the oar, While the bolt from the
3. In a device for oar-locks, including. a swivel
oar through the plate and block provide free
pin, having the upper portion thereof straight
pivotal vertical movement of the car without
perpendicularly, a shoulder ‘selow such straight
vibration or noise. The block is relatively long
for reinforcement ‘and for distributing the stress 35 portion for sustaining a face plate, the lower
portion of the pin being tapered inward and
against the shaft of the car when it is positioned
downward from the shoulder for adjustable dir
in front of the pintle as a fulcrum, thus tending
position in boat sockets of various sizes, a cheek
to prevent the car from breaking opposite the
plate rotatably mounted on the pin over the
pin, as frequently occurs against ordinary row
shoulder to facilitate lateral movements of the
locks and thole pins.
car, and having its outer face flattened perpen
Having described my invention, I claim as
dicularly, a block having one side concaved for
conforming with the convex shaft of an oar,
1. A device for oar-locks for row boats, com~
and the other side ?attened perpendicularly for
prising; a rod having the lower portions thereof
new:
'
'
‘
~
~
tapered for binding tightly into swivel sockets of '45 cooperative adjustment against the flattened face
of the plate, a pivot horizontally extended from
various sizes, a shoulder on the rod above the
the car shaft. and through the block and plate,
tapered portion for supporting a cheek plate and
for sustaining the perpendicular faces against
the portion above the shoulder extended perpen
dicularly with a straight
for the cheek plate, a
mounted upon the pin to
ments of an oar one side
each other rotatably to facilitate the vertical
shank for a swivel pin
cheek plate rotatably 5o movements of the car.
CARSTEN THOR/SEN.
facilitate lateral move—
of the plate being ?at
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